#include "opt_inet.h"
#include "opt_inet6.h"
#include "opt_ipsec.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/fnv_hash.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/malloc.h>
#include <sys/rmlock.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/errno.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/refcount.h>
#include <sys/stdarg.h>
#include <sys/syslog.h>
#include <vm/uma.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/vnet.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_var.h>
#include <netinet/udp.h>
#ifdef INET6
#include <netinet/ip6.h>
#include <netinet6/in6_var.h>
#include <netinet6/ip6_var.h>
#endif
#include <net/pfkeyv2.h>
#include <netipsec/keydb.h>
#include <netipsec/key.h>
#include <netipsec/keysock.h>
#include <netipsec/key_debug.h>
#include <netipsec/ipsec_offload.h>
#include <netipsec/ipsec.h>
#ifdef INET6
#include <netipsec/ipsec6.h>
#endif
#include <netipsec/xform.h>
#include <netipsec/ipsec_offload.h>
#include <machine/in_cksum.h>
#include <sys/random.h>
#ifdef IPSEC_OFFLOAD
void (*ipsec_accel_sa_newkey_p)(struct secasvar *sav);
void (*ipsec_accel_forget_sav_p)(struct secasvar *sav);
void (*ipsec_accel_spdadd_p)(struct secpolicy *sp, struct inpcb *inp);
void (*ipsec_accel_spddel_p)(struct secpolicy *sp);
int (*ipsec_accel_sa_lifetime_op_p)(struct secasvar *sav,
struct seclifetime *lft_c, if_t ifp, enum IF_SA_CNT_WHICH op,
struct rm_priotracker *sahtree_trackerp);
void (*ipsec_accel_sync_p)(void);
bool (*ipsec_accel_is_accel_sav_p)(struct secasvar *sav);
struct mbuf *(*ipsec_accel_key_setaccelif_p)(struct secasvar *sav);
void (*ipsec_accel_on_ifdown_p)(struct ifnet *ifp);
void (*ipsec_accel_drv_sa_lifetime_update_p)(struct secasvar *sav, if_t ifp,
u_int drv_spi, uint64_t octets, uint64_t allocs);
int (*ipsec_accel_drv_sa_lifetime_fetch_p)(struct secasvar *sav, if_t ifp,
u_int drv_spi, uint64_t *octets, uint64_t *allocs);
bool (*ipsec_accel_fill_xh_p)(if_t ifp, uint32_t drv_spi,
struct xform_history *xh);
#endif
#define FULLMASK 0xff
#define _BITS(bytes) ((bytes) << 3)
#define UINT32_80PCT 0xcccccccc
VNET_DEFINE(u_int32_t, key_debug_level) = 0;
VNET_DEFINE_STATIC(u_int, key_spi_trycnt) = 1000;
VNET_DEFINE_STATIC(u_int32_t, key_spi_minval) = 0x100;
VNET_DEFINE_STATIC(u_int32_t, key_spi_maxval) = 0x0fffffff;
VNET_DEFINE_STATIC(u_int32_t, policy_id) = 0;
VNET_DEFINE_STATIC(u_int, key_int_random) = 60;
VNET_DEFINE_STATIC(u_int, key_larval_lifetime) = 30;
VNET_DEFINE_STATIC(int, key_blockacq_count) = 10;
VNET_DEFINE_STATIC(int, key_blockacq_lifetime) = 20;
VNET_DEFINE_STATIC(int, key_preferred_oldsa) = 1;
#define V_key_spi_trycnt VNET(key_spi_trycnt)
#define V_key_spi_minval VNET(key_spi_minval)
#define V_key_spi_maxval VNET(key_spi_maxval)
#define V_policy_id VNET(policy_id)
#define V_key_int_random VNET(key_int_random)
#define V_key_larval_lifetime VNET(key_larval_lifetime)
#define V_key_blockacq_count VNET(key_blockacq_count)
#define V_key_blockacq_lifetime VNET(key_blockacq_lifetime)
#define V_key_preferred_oldsa VNET(key_preferred_oldsa)
VNET_DEFINE_STATIC(u_int32_t, acq_seq) = 0;
#define V_acq_seq VNET(acq_seq)
VNET_DEFINE_STATIC(uint32_t, sp_genid) = 0;
#define V_sp_genid VNET(sp_genid)
TAILQ_HEAD(secpolicy_queue, secpolicy);
LIST_HEAD(secpolicy_list, secpolicy);
VNET_DEFINE_STATIC(struct secpolicy_queue, sptree[IPSEC_DIR_MAX]);
VNET_DEFINE_STATIC(struct secpolicy_queue, sptree_ifnet[IPSEC_DIR_MAX]);
static struct rmlock sptree_lock;
#define V_sptree VNET(sptree)
#define V_sptree_ifnet VNET(sptree_ifnet)
#define SPTREE_LOCK_INIT() rm_init(&sptree_lock, "sptree")
#define SPTREE_LOCK_DESTROY() rm_destroy(&sptree_lock)
#define SPTREE_RLOCK_TRACKER struct rm_priotracker sptree_tracker
#define SPTREE_RLOCK() rm_rlock(&sptree_lock, &sptree_tracker)
#define SPTREE_RUNLOCK() rm_runlock(&sptree_lock, &sptree_tracker)
#define SPTREE_RLOCK_ASSERT() rm_assert(&sptree_lock, RA_RLOCKED)
#define SPTREE_WLOCK() rm_wlock(&sptree_lock)
#define SPTREE_WUNLOCK() rm_wunlock(&sptree_lock)
#define SPTREE_WLOCK_ASSERT() rm_assert(&sptree_lock, RA_WLOCKED)
#define SPTREE_UNLOCK_ASSERT() rm_assert(&sptree_lock, RA_UNLOCKED)
VNET_DEFINE_STATIC(struct secpolicy_list *, sphashtbl);
VNET_DEFINE_STATIC(u_long, sphash_mask);
#define V_sphashtbl VNET(sphashtbl)
#define V_sphash_mask VNET(sphash_mask)
#define SPHASH_NHASH_LOG2 7
#define SPHASH_NHASH (1 << SPHASH_NHASH_LOG2)
#define SPHASH_HASHVAL(id) (key_u32hash(id) & V_sphash_mask)
#define SPHASH_HASH(id) &V_sphashtbl[SPHASH_HASHVAL(id)]
struct spdcache_entry {
struct secpolicyindex spidx;
struct secpolicy *sp;
LIST_ENTRY(spdcache_entry) chain;
};
LIST_HEAD(spdcache_entry_list, spdcache_entry);
#define SPDCACHE_MAX_ENTRIES_PER_HASH 8
VNET_DEFINE_STATIC(u_int, key_spdcache_maxentries) = 0;
#define V_key_spdcache_maxentries VNET(key_spdcache_maxentries)
VNET_DEFINE_STATIC(u_int, key_spdcache_threshold) = 32;
#define V_key_spdcache_threshold VNET(key_spdcache_threshold)
VNET_DEFINE_STATIC(unsigned long, spd_size) = 0;
#define V_spd_size VNET(spd_size)
#define SPDCACHE_ENABLED() (V_key_spdcache_maxentries != 0)
#define SPDCACHE_ACTIVE() \
(SPDCACHE_ENABLED() && V_spd_size >= V_key_spdcache_threshold)
VNET_DEFINE_STATIC(struct spdcache_entry_list *, spdcachehashtbl);
VNET_DEFINE_STATIC(u_long, spdcachehash_mask);
#define V_spdcachehashtbl VNET(spdcachehashtbl)
#define V_spdcachehash_mask VNET(spdcachehash_mask)
#define SPDCACHE_HASHVAL(idx) \
(key_addrprotohash(&(idx)->src, &(idx)->dst, &(idx)->ul_proto) & \
V_spdcachehash_mask)
VNET_DEFINE_STATIC(struct mtx *, spdcache_lock);
#define V_spdcache_lock VNET(spdcache_lock)
#define SPDCACHE_LOCK_INIT(a) \
mtx_init(&V_spdcache_lock[a], "spdcache", \
"fast ipsec SPD cache", MTX_DEF|MTX_DUPOK)
#define SPDCACHE_LOCK_DESTROY(a) mtx_destroy(&V_spdcache_lock[a])
#define SPDCACHE_LOCK(a) mtx_lock(&V_spdcache_lock[a]);
#define SPDCACHE_UNLOCK(a) mtx_unlock(&V_spdcache_lock[a]);
static struct sx spi_alloc_lock;
#define SPI_ALLOC_LOCK_INIT() sx_init(&spi_alloc_lock, "spialloc")
#define SPI_ALLOC_LOCK_DESTROY() sx_destroy(&spi_alloc_lock)
#define SPI_ALLOC_LOCK() sx_xlock(&spi_alloc_lock)
#define SPI_ALLOC_UNLOCK() sx_unlock(&spi_alloc_lock)
#define SPI_ALLOC_LOCK_ASSERT() sx_assert(&spi_alloc_lock, SA_XLOCKED)
TAILQ_HEAD(secashead_queue, secashead);
LIST_HEAD(secashead_list, secashead);
VNET_DEFINE_STATIC(struct secashead_queue, sahtree);
static struct rmlock sahtree_lock;
#define V_sahtree VNET(sahtree)
#define SAHTREE_LOCK_INIT() rm_init(&sahtree_lock, "sahtree")
#define SAHTREE_LOCK_DESTROY() rm_destroy(&sahtree_lock)
#define SAHTREE_RLOCK_TRACKER struct rm_priotracker sahtree_tracker
#define SAHTREE_RLOCK() rm_rlock(&sahtree_lock, &sahtree_tracker)
#define SAHTREE_RUNLOCK() rm_runlock(&sahtree_lock, &sahtree_tracker)
#define SAHTREE_RLOCK_ASSERT() rm_assert(&sahtree_lock, RA_RLOCKED)
#define SAHTREE_WLOCK() rm_wlock(&sahtree_lock)
#define SAHTREE_WUNLOCK() rm_wunlock(&sahtree_lock)
#define SAHTREE_WLOCK_ASSERT() rm_assert(&sahtree_lock, RA_WLOCKED)
#define SAHTREE_UNLOCK_ASSERT() rm_assert(&sahtree_lock, RA_UNLOCKED)
VNET_DEFINE_STATIC(struct secashead_list *, sahaddrhashtbl);
VNET_DEFINE_STATIC(u_long, sahaddrhash_mask);
#define V_sahaddrhashtbl VNET(sahaddrhashtbl)
#define V_sahaddrhash_mask VNET(sahaddrhash_mask)
#define SAHHASH_NHASH_LOG2 7
#define SAHHASH_NHASH (1 << SAHHASH_NHASH_LOG2)
#define SAHADDRHASH_HASHVAL(idx) \
(key_addrprotohash(&(idx)->src, &(idx)->dst, &(idx)->proto) & \
V_sahaddrhash_mask)
#define SAHADDRHASH_HASH(saidx) \
&V_sahaddrhashtbl[SAHADDRHASH_HASHVAL(saidx)]
LIST_HEAD(secasvar_list, secasvar);
VNET_DEFINE_STATIC(struct secasvar_list *, savhashtbl);
VNET_DEFINE_STATIC(u_long, savhash_mask);
#define V_savhashtbl VNET(savhashtbl)
#define V_savhash_mask VNET(savhash_mask)
#define SAVHASH_NHASH_LOG2 7
#define SAVHASH_NHASH (1 << SAVHASH_NHASH_LOG2)
#define SAVHASH_HASHVAL(spi) (key_u32hash(spi) & V_savhash_mask)
#define SAVHASH_HASH(spi) &V_savhashtbl[SAVHASH_HASHVAL(spi)]
static uint32_t
key_addrprotohash(const union sockaddr_union *src,
const union sockaddr_union *dst, const uint8_t *proto)
{
uint32_t hval;
hval = fnv_32_buf(proto, sizeof(*proto),
FNV1_32_INIT);
switch (dst->sa.sa_family) {
#ifdef INET
case AF_INET:
hval = fnv_32_buf(&src->sin.sin_addr,
sizeof(in_addr_t), hval);
hval = fnv_32_buf(&dst->sin.sin_addr,
sizeof(in_addr_t), hval);
break;
#endif
#ifdef INET6
case AF_INET6:
hval = fnv_32_buf(&src->sin6.sin6_addr,
sizeof(struct in6_addr), hval);
hval = fnv_32_buf(&dst->sin6.sin6_addr,
sizeof(struct in6_addr), hval);
break;
#endif
default:
hval = 0;
ipseclog((LOG_DEBUG, "%s: unknown address family %d\n",
__func__, dst->sa.sa_family));
}
return (hval);
}
static uint32_t
key_u32hash(uint32_t val)
{
return (fnv_32_buf(&val, sizeof(val), FNV1_32_INIT));
}
VNET_DEFINE_STATIC(LIST_HEAD(_regtree, secreg), regtree[SADB_SATYPE_MAX + 1]);
#define V_regtree VNET(regtree)
static struct mtx regtree_lock;
#define REGTREE_LOCK_INIT() \
mtx_init(®tree_lock, "regtree", "fast ipsec regtree", MTX_DEF)
#define REGTREE_LOCK_DESTROY() mtx_destroy(®tree_lock)
#define REGTREE_LOCK() mtx_lock(®tree_lock)
#define REGTREE_UNLOCK() mtx_unlock(®tree_lock)
#define REGTREE_LOCK_ASSERT() mtx_assert(®tree_lock, MA_OWNED)
LIST_HEAD(secacq_list, secacq);
VNET_DEFINE_STATIC(struct secacq_list, acqtree);
#define V_acqtree VNET(acqtree)
static struct mtx acq_lock;
#define ACQ_LOCK_INIT() \
mtx_init(&acq_lock, "acqtree", "ipsec SA acquiring list", MTX_DEF)
#define ACQ_LOCK_DESTROY() mtx_destroy(&acq_lock)
#define ACQ_LOCK() mtx_lock(&acq_lock)
#define ACQ_UNLOCK() mtx_unlock(&acq_lock)
#define ACQ_LOCK_ASSERT() mtx_assert(&acq_lock, MA_OWNED)
VNET_DEFINE_STATIC(struct secacq_list *, acqaddrhashtbl);
VNET_DEFINE_STATIC(u_long, acqaddrhash_mask);
#define V_acqaddrhashtbl VNET(acqaddrhashtbl)
#define V_acqaddrhash_mask VNET(acqaddrhash_mask)
VNET_DEFINE_STATIC(struct secacq_list *, acqseqhashtbl);
VNET_DEFINE_STATIC(u_long, acqseqhash_mask);
#define V_acqseqhashtbl VNET(acqseqhashtbl)
#define V_acqseqhash_mask VNET(acqseqhash_mask)
#define ACQHASH_NHASH_LOG2 7
#define ACQHASH_NHASH (1 << ACQHASH_NHASH_LOG2)
#define ACQADDRHASH_HASHVAL(idx) \
(key_addrprotohash(&(idx)->src, &(idx)->dst, &(idx)->proto) & \
V_acqaddrhash_mask)
#define ACQSEQHASH_HASHVAL(seq) \
(key_u32hash(seq) & V_acqseqhash_mask)
#define ACQADDRHASH_HASH(saidx) \
&V_acqaddrhashtbl[ACQADDRHASH_HASHVAL(saidx)]
#define ACQSEQHASH_HASH(seq) \
&V_acqseqhashtbl[ACQSEQHASH_HASHVAL(seq)]
VNET_DEFINE_STATIC(LIST_HEAD(_spacqtree, secspacq), spacqtree);
#define V_spacqtree VNET(spacqtree)
static struct mtx spacq_lock;
#define SPACQ_LOCK_INIT() \
mtx_init(&spacq_lock, "spacqtree", \
"fast ipsec security policy acquire list", MTX_DEF)
#define SPACQ_LOCK_DESTROY() mtx_destroy(&spacq_lock)
#define SPACQ_LOCK() mtx_lock(&spacq_lock)
#define SPACQ_UNLOCK() mtx_unlock(&spacq_lock)
#define SPACQ_LOCK_ASSERT() mtx_assert(&spacq_lock, MA_OWNED)
static const int minsize[] = {
[SADB_EXT_RESERVED] = sizeof(struct sadb_msg),
[SADB_EXT_SA] = sizeof(struct sadb_sa),
[SADB_EXT_LIFETIME_CURRENT] = sizeof(struct sadb_lifetime),
[SADB_EXT_LIFETIME_HARD] = sizeof(struct sadb_lifetime),
[SADB_EXT_LIFETIME_SOFT] = sizeof(struct sadb_lifetime),
[SADB_EXT_ADDRESS_SRC] = sizeof(struct sadb_address),
[SADB_EXT_ADDRESS_DST] = sizeof(struct sadb_address),
[SADB_EXT_ADDRESS_PROXY] = sizeof(struct sadb_address),
[SADB_EXT_KEY_AUTH] = sizeof(struct sadb_key),
[SADB_EXT_KEY_ENCRYPT] = sizeof(struct sadb_key),
[SADB_EXT_IDENTITY_SRC] = sizeof(struct sadb_ident),
[SADB_EXT_IDENTITY_DST] = sizeof(struct sadb_ident),
[SADB_EXT_SENSITIVITY] = sizeof(struct sadb_sens),
[SADB_EXT_PROPOSAL] = sizeof(struct sadb_prop),
[SADB_EXT_SUPPORTED_AUTH] = sizeof(struct sadb_supported),
[SADB_EXT_SUPPORTED_ENCRYPT] = sizeof(struct sadb_supported),
[SADB_EXT_SPIRANGE] = sizeof(struct sadb_spirange),
[SADB_X_EXT_KMPRIVATE] = 0,
[SADB_X_EXT_POLICY] = sizeof(struct sadb_x_policy),
[SADB_X_EXT_SA2] = sizeof(struct sadb_x_sa2),
[SADB_X_EXT_NAT_T_TYPE] = sizeof(struct sadb_x_nat_t_type),
[SADB_X_EXT_NAT_T_SPORT] = sizeof(struct sadb_x_nat_t_port),
[SADB_X_EXT_NAT_T_DPORT] = sizeof(struct sadb_x_nat_t_port),
[SADB_X_EXT_NAT_T_OAI] = sizeof(struct sadb_address),
[SADB_X_EXT_NAT_T_OAR] = sizeof(struct sadb_address),
[SADB_X_EXT_NAT_T_FRAG] = sizeof(struct sadb_x_nat_t_frag),
[SADB_X_EXT_SA_REPLAY] = sizeof(struct sadb_x_sa_replay),
[SADB_X_EXT_NEW_ADDRESS_SRC] = sizeof(struct sadb_address),
[SADB_X_EXT_NEW_ADDRESS_DST] = sizeof(struct sadb_address),
[SADB_X_EXT_LFT_CUR_SW_OFFL] = sizeof(struct sadb_lifetime),
[SADB_X_EXT_LFT_CUR_HW_OFFL] = sizeof(struct sadb_lifetime),
[SADB_X_EXT_IF_HW_OFFL] = sizeof(struct sadb_x_if_hw_offl),
};
_Static_assert(nitems(minsize) == SADB_EXT_MAX + 1, "minsize size mismatch");
static const int maxsize[] = {
[SADB_EXT_RESERVED] = sizeof(struct sadb_msg),
[SADB_EXT_SA] = sizeof(struct sadb_sa),
[SADB_EXT_LIFETIME_CURRENT] = sizeof(struct sadb_lifetime),
[SADB_EXT_LIFETIME_HARD] = sizeof(struct sadb_lifetime),
[SADB_EXT_LIFETIME_SOFT] = sizeof(struct sadb_lifetime),
[SADB_EXT_ADDRESS_SRC] = 0,
[SADB_EXT_ADDRESS_DST] = 0,
[SADB_EXT_ADDRESS_PROXY] = 0,
[SADB_EXT_KEY_AUTH] = 0,
[SADB_EXT_KEY_ENCRYPT] = 0,
[SADB_EXT_IDENTITY_SRC] = 0,
[SADB_EXT_IDENTITY_DST] = 0,
[SADB_EXT_SENSITIVITY] = 0,
[SADB_EXT_PROPOSAL] = 0,
[SADB_EXT_SUPPORTED_AUTH] = 0,
[SADB_EXT_SUPPORTED_ENCRYPT] = 0,
[SADB_EXT_SPIRANGE] = sizeof(struct sadb_spirange),
[SADB_X_EXT_KMPRIVATE] = 0,
[SADB_X_EXT_POLICY] = 0,
[SADB_X_EXT_SA2] = sizeof(struct sadb_x_sa2),
[SADB_X_EXT_NAT_T_TYPE] = sizeof(struct sadb_x_nat_t_type),
[SADB_X_EXT_NAT_T_SPORT] = sizeof(struct sadb_x_nat_t_port),
[SADB_X_EXT_NAT_T_DPORT] = sizeof(struct sadb_x_nat_t_port),
[SADB_X_EXT_NAT_T_OAI] = 0,
[SADB_X_EXT_NAT_T_OAR] = 0,
[SADB_X_EXT_NAT_T_FRAG] = sizeof(struct sadb_x_nat_t_frag),
[SADB_X_EXT_SA_REPLAY] = sizeof(struct sadb_x_sa_replay),
[SADB_X_EXT_NEW_ADDRESS_SRC] = 0,
[SADB_X_EXT_NEW_ADDRESS_DST] = 0,
[SADB_X_EXT_LFT_CUR_SW_OFFL] = sizeof(struct sadb_lifetime),
[SADB_X_EXT_LFT_CUR_HW_OFFL] = sizeof(struct sadb_lifetime),
[SADB_X_EXT_IF_HW_OFFL] = sizeof(struct sadb_x_if_hw_offl),
};
_Static_assert(nitems(maxsize) == SADB_EXT_MAX + 1, "maxsize size mismatch");
#define SADB_X_EXT_F_CLONED 0x80000000
#define SADB_CHECKLEN(_mhp, _ext) \
((_mhp)->extlen[(_ext)] < minsize[(_ext)] || (maxsize[(_ext)] != 0 && \
((_mhp)->extlen[(_ext)] > maxsize[(_ext)])))
#define SADB_CHECKHDR(_mhp, _ext) ((_mhp)->ext[(_ext)] == NULL)
VNET_DEFINE_STATIC(int, ipsec_esp_keymin) = 256;
VNET_DEFINE_STATIC(int, ipsec_esp_auth) = 0;
VNET_DEFINE_STATIC(int, ipsec_ah_keymin) = 128;
#define V_ipsec_esp_keymin VNET(ipsec_esp_keymin)
#define V_ipsec_esp_auth VNET(ipsec_esp_auth)
#define V_ipsec_ah_keymin VNET(ipsec_ah_keymin)
#ifdef IPSEC_DEBUG
VNET_DEFINE(int, ipsec_debug) = 1;
#else
VNET_DEFINE(int, ipsec_debug) = 0;
#endif
#ifdef INET
SYSCTL_DECL(_net_inet_ipsec);
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_DEBUG, debug,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipsec_debug), 0,
"Enable IPsec debugging output when set.");
#endif
#ifdef INET6
SYSCTL_DECL(_net_inet6_ipsec6);
SYSCTL_INT(_net_inet6_ipsec6, IPSECCTL_DEBUG, debug,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipsec_debug), 0,
"Enable IPsec debugging output when set.");
#endif
SYSCTL_INT(_net_key, KEYCTL_DEBUG_LEVEL, debug,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_debug_level), 0, "");
SYSCTL_INT(_net_key, KEYCTL_SPI_TRY, spi_trycnt,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_spi_trycnt), 0, "");
SYSCTL_INT(_net_key, KEYCTL_SPI_MIN_VALUE, spi_minval,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_spi_minval), 0, "");
SYSCTL_INT(_net_key, KEYCTL_SPI_MAX_VALUE, spi_maxval,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_spi_maxval), 0, "");
SYSCTL_INT(_net_key, KEYCTL_RANDOM_INT, int_random,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_int_random), 0, "");
SYSCTL_INT(_net_key, KEYCTL_LARVAL_LIFETIME, larval_lifetime,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_larval_lifetime), 0, "");
SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_COUNT, blockacq_count,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_blockacq_count), 0, "");
SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_LIFETIME, blockacq_lifetime,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_blockacq_lifetime), 0, "");
SYSCTL_INT(_net_key, KEYCTL_ESP_AUTH, esp_auth,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipsec_esp_auth), 0, "");
SYSCTL_INT(_net_key, KEYCTL_ESP_KEYMIN, esp_keymin,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipsec_esp_keymin), 0, "");
SYSCTL_INT(_net_key, KEYCTL_AH_KEYMIN, ah_keymin,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipsec_ah_keymin), 0, "");
SYSCTL_INT(_net_key, KEYCTL_PREFERED_OLDSA, preferred_oldsa,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(key_preferred_oldsa), 0, "");
SYSCTL_NODE(_net_key, OID_AUTO, spdcache, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"SPD cache");
SYSCTL_UINT(_net_key_spdcache, OID_AUTO, maxentries,
CTLFLAG_VNET | CTLFLAG_RDTUN, &VNET_NAME(key_spdcache_maxentries), 0,
"Maximum number of entries in the SPD cache"
" (power of 2, 0 to disable)");
SYSCTL_UINT(_net_key_spdcache, OID_AUTO, threshold,
CTLFLAG_VNET | CTLFLAG_RDTUN, &VNET_NAME(key_spdcache_threshold), 0,
"Number of SPs that make the SPD cache active");
#define __LIST_CHAINED(elm) \
(!((elm)->chain.le_next == NULL && (elm)->chain.le_prev == NULL))
MALLOC_DEFINE(M_IPSEC_SA, "secasvar", "ipsec security association");
MALLOC_DEFINE(M_IPSEC_SAH, "sahead", "ipsec sa head");
MALLOC_DEFINE(M_IPSEC_SP, "ipsecpolicy", "ipsec security policy");
MALLOC_DEFINE(M_IPSEC_SR, "ipsecrequest", "ipsec security request");
MALLOC_DEFINE(M_IPSEC_MISC, "ipsec-misc", "ipsec miscellaneous");
MALLOC_DEFINE(M_IPSEC_SAQ, "ipsec-saq", "ipsec sa acquire");
MALLOC_DEFINE(M_IPSEC_SAR, "ipsec-reg", "ipsec sa acquire");
MALLOC_DEFINE(M_IPSEC_SPDCACHE, "ipsec-spdcache", "ipsec SPD cache");
static uma_zone_t __read_mostly ipsec_key_lft_zone;
#define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, idx) \
do { \
bzero((idx), sizeof(struct secpolicyindex)); \
(idx)->dir = (_dir); \
(idx)->prefs = (ps); \
(idx)->prefd = (pd); \
(idx)->ul_proto = (ulp); \
bcopy((s), &(idx)->src, ((const struct sockaddr *)(s))->sa_len); \
bcopy((d), &(idx)->dst, ((const struct sockaddr *)(d))->sa_len); \
} while (0)
#define KEY_SETSECASIDX(p, m, r, s, d, idx) \
do { \
bzero((idx), sizeof(struct secasindex)); \
(idx)->proto = (p); \
(idx)->mode = (m); \
(idx)->reqid = (r); \
bcopy((s), &(idx)->src, ((const struct sockaddr *)(s))->sa_len); \
bcopy((d), &(idx)->dst, ((const struct sockaddr *)(d))->sa_len); \
key_porttosaddr(&(idx)->src.sa, 0); \
key_porttosaddr(&(idx)->dst.sa, 0); \
} while (0)
struct _keystat {
u_long getspi_count;
} keystat;
struct sadb_msghdr {
struct sadb_msg *msg;
struct sadb_ext *ext[SADB_EXT_MAX + 1];
int extoff[SADB_EXT_MAX + 1];
int extlen[SADB_EXT_MAX + 1];
};
static const struct supported_ealgs {
int sadb_alg;
const struct enc_xform *xform;
} supported_ealgs[] = {
{ SADB_X_EALG_AES, &enc_xform_aes_cbc },
{ SADB_EALG_NULL, &enc_xform_null },
{ SADB_X_EALG_AESCTR, &enc_xform_aes_icm },
{ SADB_X_EALG_AESGCM16, &enc_xform_aes_nist_gcm },
{ SADB_X_EALG_AESGMAC, &enc_xform_aes_nist_gmac },
{ SADB_X_EALG_CHACHA20POLY1305, &enc_xform_chacha20_poly1305 },
};
static const struct supported_aalgs {
int sadb_alg;
const struct auth_hash *xform;
} supported_aalgs[] = {
{ SADB_X_AALG_NULL, &auth_hash_null },
{ SADB_AALG_SHA1HMAC, &auth_hash_hmac_sha1 },
{ SADB_X_AALG_SHA2_256, &auth_hash_hmac_sha2_256 },
{ SADB_X_AALG_SHA2_384, &auth_hash_hmac_sha2_384 },
{ SADB_X_AALG_SHA2_512, &auth_hash_hmac_sha2_512 },
{ SADB_X_AALG_AES128GMAC, &auth_hash_nist_gmac_aes_128 },
{ SADB_X_AALG_AES192GMAC, &auth_hash_nist_gmac_aes_192 },
{ SADB_X_AALG_AES256GMAC, &auth_hash_nist_gmac_aes_256 },
{ SADB_X_AALG_CHACHA20POLY1305, &auth_hash_poly1305 },
};
static const struct supported_calgs {
int sadb_alg;
const struct comp_algo *xform;
} supported_calgs[] = {
{ SADB_X_CALG_DEFLATE, &comp_algo_deflate },
};
#ifndef IPSEC_DEBUG2
static struct callout key_timer;
#endif
static void key_unlink(struct secpolicy *);
static void key_detach(struct secpolicy *);
static struct secpolicy *key_getsp(struct secpolicyindex *);
static struct secpolicy *key_getspbyid(u_int32_t);
static struct mbuf *key_gather_mbuf(struct mbuf *,
const struct sadb_msghdr *, int, int, ...);
static int key_spdadd(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static uint32_t key_getnewspid(void);
static int key_spddelete(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_spddelete2(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_spdget(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_spdflush(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_spddump(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static struct mbuf *key_setdumpsp(struct secpolicy *,
u_int8_t, u_int32_t, u_int32_t);
static struct mbuf *key_sp2mbuf(struct secpolicy *);
static size_t key_getspreqmsglen(struct secpolicy *);
static int key_spdexpire(struct secpolicy *);
static struct secashead *key_newsah(struct secasindex *);
static void key_freesah(struct secashead **);
static void key_delsah(struct secashead *);
static struct secasvar *key_newsav(const struct sadb_msghdr *,
struct secasindex *, uint32_t, int *);
static void key_delsav(struct secasvar *);
static void key_unlinksav(struct secasvar *);
static struct secashead *key_getsah(struct secasindex *);
static int key_checkspidup(uint32_t);
static struct secasvar *key_getsavbyspi(uint32_t);
static int key_setnatt(struct secasvar *, const struct sadb_msghdr *);
static int key_setsaval(struct secasvar *, const struct sadb_msghdr *);
static int key_updatelifetimes(struct secasvar *, const struct sadb_msghdr *);
static int key_updateaddresses(struct socket *, struct mbuf *,
const struct sadb_msghdr *, struct secasvar *, struct secasindex *);
static struct mbuf *key_setdumpsa(struct secasvar *, u_int8_t,
u_int8_t, u_int32_t, u_int32_t, struct rm_priotracker *);
static struct mbuf *key_setsadbmsg(u_int8_t, u_int16_t, u_int8_t,
u_int32_t, pid_t, u_int16_t);
static struct mbuf *key_setsadbsa(struct secasvar *);
static struct mbuf *key_setsadbaddr(u_int16_t,
const struct sockaddr *, u_int8_t, u_int16_t);
static struct mbuf *key_setsadbxport(u_int16_t, u_int16_t);
static struct mbuf *key_setsadbxtype(u_int16_t);
static struct mbuf *key_setsadbxsa2(u_int8_t, u_int32_t, u_int32_t);
static struct mbuf *key_setsadbxsareplay(u_int32_t);
static struct mbuf *key_setsadbxpolicy(u_int16_t, u_int8_t,
u_int32_t, u_int32_t);
static struct seckey *key_dup_keymsg(const struct sadb_key *,
struct malloc_type *);
static struct seclifetime *key_dup_lifemsg(const struct sadb_lifetime *src,
struct malloc_type *);
#define CMP_HEAD 1
#define CMP_MODE_REQID 2
#define CMP_REQID 3
#define CMP_EXACTLY 4
static int key_cmpsaidx(const struct secasindex *,
const struct secasindex *, int);
static int key_cmpspidx_exactly(struct secpolicyindex *,
struct secpolicyindex *);
static int key_cmpspidx_withmask(struct secpolicyindex *,
struct secpolicyindex *);
static int key_bbcmp(const void *, const void *, u_int);
static uint8_t key_satype2proto(uint8_t);
static uint8_t key_proto2satype(uint8_t);
static int key_getspi(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static uint32_t key_do_getnewspi(struct sadb_spirange *, struct secasindex *);
static int key_update(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_add(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_setident(struct secashead *, const struct sadb_msghdr *);
static struct mbuf *key_getmsgbuf_x1(struct mbuf *,
const struct sadb_msghdr *);
static int key_delete(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_delete_all(struct socket *, struct mbuf *,
const struct sadb_msghdr *, struct secasindex *);
static int key_get(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static void key_getcomb_setlifetime(struct sadb_comb *);
static struct mbuf *key_getcomb_ealg(void);
static struct mbuf *key_getcomb_ah(void);
static struct mbuf *key_getcomb_ipcomp(void);
static struct mbuf *key_getprop(const struct secasindex *);
static int key_acquire(const struct secasindex *, struct secpolicy *);
static uint32_t key_newacq(const struct secasindex *, int *);
static uint32_t key_getacq(const struct secasindex *, int *);
static int key_acqdone(const struct secasindex *, uint32_t);
static int key_acqreset(uint32_t);
static struct secspacq *key_newspacq(struct secpolicyindex *);
static struct secspacq *key_getspacq(struct secpolicyindex *);
static int key_acquire2(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_register(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_expire(struct secasvar *, int);
static int key_flush(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_dump(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_promisc(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_senderror(struct socket *, struct mbuf *, int);
static int key_validate_ext(const struct sadb_ext *, int);
static int key_align(struct mbuf *, struct sadb_msghdr *);
static struct mbuf *key_setlifetime(struct seclifetime *, uint16_t);
static struct mbuf *key_setkey(struct seckey *, uint16_t);
static void spdcache_init(void);
static void spdcache_clear(void);
static struct spdcache_entry *spdcache_entry_alloc(
const struct secpolicyindex *spidx,
struct secpolicy *policy);
static void spdcache_entry_free(struct spdcache_entry *entry);
#ifdef VIMAGE
static void spdcache_destroy(void);
#endif
#define DBG_IPSEC_INITREF(t, p) do { \
refcount_init(&(p)->refcnt, 1); \
KEYDBG(KEY_STAMP, \
printf("%s: Initialize refcnt %s(%p) = %u\n", \
__func__, #t, (p), (p)->refcnt)); \
} while (0)
#define DBG_IPSEC_ADDREF(t, p) do { \
refcount_acquire(&(p)->refcnt); \
KEYDBG(KEY_STAMP, \
printf("%s: Acquire refcnt %s(%p) -> %u\n", \
__func__, #t, (p), (p)->refcnt)); \
} while (0)
#define DBG_IPSEC_DELREF(t, p) do { \
KEYDBG(KEY_STAMP, \
printf("%s: Release refcnt %s(%p) -> %u\n", \
__func__, #t, (p), (p)->refcnt - 1)); \
refcount_release(&(p)->refcnt); \
} while (0)
#define IPSEC_INITREF(t, p) refcount_init(&(p)->refcnt, 1)
#define IPSEC_ADDREF(t, p) refcount_acquire(&(p)->refcnt)
#define IPSEC_DELREF(t, p) refcount_release(&(p)->refcnt)
#define SP_INITREF(p) IPSEC_INITREF(SP, p)
#define SP_ADDREF(p) IPSEC_ADDREF(SP, p)
#define SP_DELREF(p) IPSEC_DELREF(SP, p)
#define SAH_INITREF(p) IPSEC_INITREF(SAH, p)
#define SAH_ADDREF(p) IPSEC_ADDREF(SAH, p)
#define SAH_DELREF(p) IPSEC_DELREF(SAH, p)
#define SAV_INITREF(p) IPSEC_INITREF(SAV, p)
#define SAV_ADDREF(p) IPSEC_ADDREF(SAV, p)
#define SAV_DELREF(p) IPSEC_DELREF(SAV, p)
void
key_addref(struct secpolicy *sp)
{
SP_ADDREF(sp);
}
int
key_havesp(u_int dir)
{
IPSEC_ASSERT(dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND,
("invalid direction %u", dir));
return (TAILQ_FIRST(&V_sptree[dir]) != NULL);
}
int
key_havesp_any(void)
{
return (V_spd_size != 0);
}
static struct mbuf *
key_mget(u_int len)
{
struct mbuf *m;
KASSERT(len <= MCLBYTES,
("%s: invalid buffer length %u", __func__, len));
m = m_get2(len, M_NOWAIT, MT_DATA, M_PKTHDR);
if (m == NULL)
return (NULL);
memset(mtod(m, void *), 0, len);
return (m);
}
uint32_t
key_getspgen(void)
{
return (V_sp_genid);
}
void
key_bumpspgen(void)
{
V_sp_genid++;
}
static int
key_checksockaddrs(struct sockaddr *src, struct sockaddr *dst)
{
if (src->sa_family != dst->sa_family)
return (EINVAL);
if (src->sa_len != dst->sa_len)
return (EINVAL);
switch (src->sa_family) {
#ifdef INET
case AF_INET:
if (src->sa_len != sizeof(struct sockaddr_in))
return (EINVAL);
break;
#endif
#ifdef INET6
case AF_INET6:
if (src->sa_len != sizeof(struct sockaddr_in6))
return (EINVAL);
break;
#endif
default:
return (EAFNOSUPPORT);
}
return (0);
}
struct secpolicy *
key_do_allocsp(struct secpolicyindex *spidx, u_int dir)
{
SPTREE_RLOCK_TRACKER;
struct secpolicy *sp;
IPSEC_ASSERT(spidx != NULL, ("null spidx"));
IPSEC_ASSERT(dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND,
("invalid direction %u", dir));
SPTREE_RLOCK();
TAILQ_FOREACH(sp, &V_sptree[dir], chain) {
if (key_cmpspidx_withmask(&sp->spidx, spidx)) {
SP_ADDREF(sp);
break;
}
}
SPTREE_RUNLOCK();
return (sp);
}
struct secpolicy *
key_allocsp(struct secpolicyindex *spidx, u_int dir)
{
struct spdcache_entry *entry, *lastentry, *tmpentry;
struct secpolicy *sp;
uint32_t hashv;
time_t ts;
int nb_entries;
if (!SPDCACHE_ACTIVE()) {
sp = key_do_allocsp(spidx, dir);
goto out;
}
hashv = SPDCACHE_HASHVAL(spidx);
SPDCACHE_LOCK(hashv);
nb_entries = 0;
LIST_FOREACH_SAFE(entry, &V_spdcachehashtbl[hashv], chain, tmpentry) {
if (entry->sp != NULL &&
entry->sp->state == IPSEC_SPSTATE_DEAD) {
LIST_REMOVE(entry, chain);
spdcache_entry_free(entry);
continue;
}
nb_entries++;
if (!key_cmpspidx_exactly(&entry->spidx, spidx)) {
lastentry = entry;
continue;
}
sp = entry->sp;
if (entry->sp != NULL)
SP_ADDREF(sp);
SPDCACHE_UNLOCK(hashv);
goto out;
}
sp = key_do_allocsp(spidx, dir);
entry = spdcache_entry_alloc(spidx, sp);
if (entry != NULL) {
if (nb_entries >= SPDCACHE_MAX_ENTRIES_PER_HASH) {
LIST_REMOVE(lastentry, chain);
spdcache_entry_free(lastentry);
}
LIST_INSERT_HEAD(&V_spdcachehashtbl[hashv], entry, chain);
}
SPDCACHE_UNLOCK(hashv);
out:
if (sp != NULL) {
ts = time_second;
if (__predict_false(sp->lastused != ts))
sp->lastused = ts;
KEYDBG(IPSEC_STAMP,
printf("%s: return SP(%p)\n", __func__, sp));
KEYDBG(IPSEC_DATA, kdebug_secpolicy(sp));
} else {
KEYDBG(IPSEC_DATA,
printf("%s: lookup failed for ", __func__);
kdebug_secpolicyindex(spidx, NULL));
}
return (sp);
}
struct secasvar *
key_allocsa_tcpmd5(struct secasindex *saidx)
{
SAHTREE_RLOCK_TRACKER;
struct secashead *sah;
struct secasvar *sav;
IPSEC_ASSERT(saidx->proto == IPPROTO_TCP,
("unexpected security protocol %u", saidx->proto));
IPSEC_ASSERT(saidx->mode == IPSEC_MODE_TCPMD5,
("unexpected mode %u", saidx->mode));
SAHTREE_RLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(saidx), addrhash) {
KEYDBG(IPSEC_DUMP,
printf("%s: checking SAH\n", __func__);
kdebug_secash(sah, " "));
if (sah->saidx.proto != IPPROTO_TCP)
continue;
if (!key_sockaddrcmp(&saidx->dst.sa, &sah->saidx.dst.sa, 0) &&
!key_sockaddrcmp(&saidx->src.sa, &sah->saidx.src.sa, 0))
break;
}
if (sah != NULL) {
if (V_key_preferred_oldsa)
sav = TAILQ_LAST(&sah->savtree_alive, secasvar_queue);
else
sav = TAILQ_FIRST(&sah->savtree_alive);
if (sav != NULL)
SAV_ADDREF(sav);
} else
sav = NULL;
SAHTREE_RUNLOCK();
if (sav != NULL) {
KEYDBG(IPSEC_STAMP,
printf("%s: return SA(%p)\n", __func__, sav));
KEYDBG(IPSEC_DATA, kdebug_secasv(sav));
} else {
KEYDBG(IPSEC_STAMP,
printf("%s: SA not found\n", __func__));
KEYDBG(IPSEC_DATA, kdebug_secasindex(saidx, NULL));
}
return (sav);
}
struct secasvar *
key_allocsa_policy(struct secpolicy *sp, const struct secasindex *saidx,
int *error)
{
SAHTREE_RLOCK_TRACKER;
struct secashead *sah;
struct secasvar *sav;
IPSEC_ASSERT(saidx != NULL, ("null saidx"));
IPSEC_ASSERT(saidx->mode == IPSEC_MODE_TRANSPORT ||
saidx->mode == IPSEC_MODE_TUNNEL,
("unexpected policy %u", saidx->mode));
SAHTREE_RLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(saidx), addrhash) {
KEYDBG(IPSEC_DUMP,
printf("%s: checking SAH\n", __func__);
kdebug_secash(sah, " "));
if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID))
break;
}
if (sah != NULL) {
if (V_key_preferred_oldsa)
sav = TAILQ_LAST(&sah->savtree_alive, secasvar_queue);
else
sav = TAILQ_FIRST(&sah->savtree_alive);
if (sav != NULL)
SAV_ADDREF(sav);
} else
sav = NULL;
SAHTREE_RUNLOCK();
if (sav != NULL) {
*error = 0;
KEYDBG(IPSEC_STAMP,
printf("%s: chosen SA(%p) for SP(%p)\n", __func__,
sav, sp));
KEYDBG(IPSEC_DATA, kdebug_secasv(sav));
return (sav);
}
*error = key_acquire(saidx, sp);
if ((*error) != 0)
ipseclog((LOG_DEBUG,
"%s: error %d returned from key_acquire()\n",
__func__, *error));
KEYDBG(IPSEC_STAMP,
printf("%s: acquire SA for SP(%p), error %d\n",
__func__, sp, *error));
KEYDBG(IPSEC_DATA, kdebug_secasindex(saidx, NULL));
return (NULL);
}
struct secasvar *
key_allocsa(union sockaddr_union *dst, uint8_t proto, uint32_t spi)
{
SAHTREE_RLOCK_TRACKER;
struct secasvar *sav;
IPSEC_ASSERT(proto == IPPROTO_ESP || proto == IPPROTO_AH ||
proto == IPPROTO_IPCOMP, ("unexpected security protocol %u",
proto));
SAHTREE_RLOCK();
LIST_FOREACH(sav, SAVHASH_HASH(spi), spihash) {
if (sav->spi == spi)
break;
}
if (sav != NULL) {
if (sav->state != SADB_SASTATE_LARVAL &&
sav->sah->saidx.proto == proto &&
key_sockaddrcmp(&dst->sa,
&sav->sah->saidx.dst.sa, 0) == 0)
SAV_ADDREF(sav);
else
sav = NULL;
}
SAHTREE_RUNLOCK();
if (sav == NULL) {
KEYDBG(IPSEC_STAMP,
char buf[IPSEC_ADDRSTRLEN];
printf("%s: SA not found for spi %u proto %u dst %s\n",
__func__, ntohl(spi), proto, ipsec_address(dst, buf,
sizeof(buf))));
} else {
KEYDBG(IPSEC_STAMP,
printf("%s: return SA(%p)\n", __func__, sav));
KEYDBG(IPSEC_DATA, kdebug_secasv(sav));
}
return (sav);
}
struct secasvar *
key_allocsa_tunnel(union sockaddr_union *src, union sockaddr_union *dst,
uint8_t proto)
{
SAHTREE_RLOCK_TRACKER;
struct secasindex saidx;
struct secashead *sah;
struct secasvar *sav;
IPSEC_ASSERT(src != NULL, ("null src address"));
IPSEC_ASSERT(dst != NULL, ("null dst address"));
KEY_SETSECASIDX(proto, IPSEC_MODE_TUNNEL, 0, &src->sa,
&dst->sa, &saidx);
sav = NULL;
SAHTREE_RLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(&saidx), addrhash) {
if (IPSEC_MODE_TUNNEL != sah->saidx.mode)
continue;
if (proto != sah->saidx.proto)
continue;
if (key_sockaddrcmp(&src->sa, &sah->saidx.src.sa, 0) != 0)
continue;
if (key_sockaddrcmp(&dst->sa, &sah->saidx.dst.sa, 0) != 0)
continue;
if (V_key_preferred_oldsa)
sav = TAILQ_LAST(&sah->savtree_alive, secasvar_queue);
else
sav = TAILQ_FIRST(&sah->savtree_alive);
if (sav != NULL) {
SAV_ADDREF(sav);
break;
}
}
SAHTREE_RUNLOCK();
KEYDBG(IPSEC_STAMP,
printf("%s: return SA(%p)\n", __func__, sav));
if (sav != NULL)
KEYDBG(IPSEC_DATA, kdebug_secasv(sav));
return (sav);
}
void
key_freesp(struct secpolicy **spp)
{
struct secpolicy *sp = *spp;
IPSEC_ASSERT(sp != NULL, ("null sp"));
if (SP_DELREF(sp) == 0)
return;
KEYDBG(IPSEC_STAMP,
printf("%s: last reference to SP(%p)\n", __func__, sp));
KEYDBG(IPSEC_DATA, kdebug_secpolicy(sp));
*spp = NULL;
#ifdef IPSEC_OFFLOAD
KASSERT(CK_LIST_EMPTY(&sp->accel_ifps),
("key_freesp: sp %p still offloaded", sp));
free(__DECONST(char *, sp->accel_ifname), M_IPSEC_MISC);
#endif
while (sp->tcount > 0)
ipsec_delisr(sp->req[--sp->tcount]);
free(sp, M_IPSEC_SP);
}
static void
key_unlink(struct secpolicy *sp)
{
SPTREE_WLOCK();
key_detach(sp);
SPTREE_WUNLOCK();
if (SPDCACHE_ENABLED())
spdcache_clear();
ipsec_accel_sync();
key_freesp(&sp);
}
static void
key_detach(struct secpolicy *sp)
{
IPSEC_ASSERT(sp->spidx.dir == IPSEC_DIR_INBOUND ||
sp->spidx.dir == IPSEC_DIR_OUTBOUND,
("invalid direction %u", sp->spidx.dir));
SPTREE_WLOCK_ASSERT();
KEYDBG(KEY_STAMP,
printf("%s: SP(%p)\n", __func__, sp));
if (sp->state != IPSEC_SPSTATE_ALIVE) {
return;
}
sp->state = IPSEC_SPSTATE_DEAD;
ipsec_accel_spddel(sp);
TAILQ_REMOVE(&V_sptree[sp->spidx.dir], sp, chain);
V_spd_size--;
LIST_REMOVE(sp, idhash);
V_sp_genid++;
}
static void
key_insertsp(struct secpolicy *newsp)
{
struct secpolicy *sp;
SPTREE_WLOCK_ASSERT();
TAILQ_FOREACH(sp, &V_sptree[newsp->spidx.dir], chain) {
if (newsp->priority < sp->priority) {
TAILQ_INSERT_BEFORE(sp, newsp, chain);
goto done;
}
}
TAILQ_INSERT_TAIL(&V_sptree[newsp->spidx.dir], newsp, chain);
done:
LIST_INSERT_HEAD(SPHASH_HASH(newsp->id), newsp, idhash);
newsp->state = IPSEC_SPSTATE_ALIVE;
V_spd_size++;
V_sp_genid++;
ipsec_accel_spdadd(newsp, NULL);
}
int
key_register_ifnet(struct secpolicy **spp, u_int count)
{
struct mbuf *m;
u_int i;
SPTREE_WLOCK();
for (i = 0; i < count; i++) {
IPSEC_ASSERT(spp[i]->spidx.dir == IPSEC_DIR_INBOUND ||
spp[i]->spidx.dir == IPSEC_DIR_OUTBOUND,
("invalid direction %u", spp[i]->spidx.dir));
if ((spp[i]->id = key_getnewspid()) == 0) {
SPTREE_WUNLOCK();
return (EAGAIN);
}
}
for (i = 0; i < count; i++) {
TAILQ_INSERT_TAIL(&V_sptree_ifnet[spp[i]->spidx.dir],
spp[i], chain);
LIST_INSERT_HEAD(SPHASH_HASH(spp[i]->id), spp[i], idhash);
spp[i]->state = IPSEC_SPSTATE_IFNET;
ipsec_accel_spdadd(spp[i], NULL);
}
SPTREE_WUNLOCK();
for (i = 0; i < count; i++) {
m = key_setdumpsp(spp[i], SADB_X_SPDADD, 0, 0);
if (m != NULL)
key_sendup_mbuf(NULL, m, KEY_SENDUP_ALL);
}
return (0);
}
void
key_unregister_ifnet(struct secpolicy **spp, u_int count)
{
struct mbuf *m;
u_int i;
SPTREE_WLOCK();
for (i = 0; i < count; i++) {
IPSEC_ASSERT(spp[i]->spidx.dir == IPSEC_DIR_INBOUND ||
spp[i]->spidx.dir == IPSEC_DIR_OUTBOUND,
("invalid direction %u", spp[i]->spidx.dir));
if (spp[i]->state != IPSEC_SPSTATE_IFNET)
continue;
spp[i]->state = IPSEC_SPSTATE_DEAD;
ipsec_accel_spddel(spp[i]);
TAILQ_REMOVE(&V_sptree_ifnet[spp[i]->spidx.dir],
spp[i], chain);
V_spd_size--;
LIST_REMOVE(spp[i], idhash);
}
SPTREE_WUNLOCK();
if (SPDCACHE_ENABLED())
spdcache_clear();
ipsec_accel_sync();
for (i = 0; i < count; i++) {
m = key_setdumpsp(spp[i], SADB_X_SPDDELETE, 0, 0);
if (m != NULL)
key_sendup_mbuf(NULL, m, KEY_SENDUP_ALL);
}
}
void
key_freesav(struct secasvar **psav)
{
struct secasvar *sav = *psav;
IPSEC_ASSERT(sav != NULL, ("null sav"));
CURVNET_ASSERT_SET();
if (SAV_DELREF(sav) == 0)
return;
KEYDBG(IPSEC_STAMP,
printf("%s: last reference to SA(%p)\n", __func__, sav));
*psav = NULL;
key_delsav(sav);
}
static void
key_unlinksav(struct secasvar *sav)
{
struct secashead *sah;
KEYDBG(KEY_STAMP,
printf("%s: SA(%p)\n", __func__, sav));
CURVNET_ASSERT_SET();
SAHTREE_UNLOCK_ASSERT();
SAHTREE_WLOCK();
if (sav->state == SADB_SASTATE_DEAD) {
SAHTREE_WUNLOCK();
return;
}
if (sav->state == SADB_SASTATE_LARVAL)
TAILQ_REMOVE(&sav->sah->savtree_larval, sav, chain);
else
TAILQ_REMOVE(&sav->sah->savtree_alive, sav, chain);
LIST_REMOVE(sav, spihash);
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
sah = sav->sah;
SAHTREE_WUNLOCK();
key_freesav(&sav);
key_freesah(&sah);
}
static struct secpolicy *
key_getsp(struct secpolicyindex *spidx)
{
SPTREE_RLOCK_TRACKER;
struct secpolicy *sp;
IPSEC_ASSERT(spidx != NULL, ("null spidx"));
SPTREE_RLOCK();
TAILQ_FOREACH(sp, &V_sptree[spidx->dir], chain) {
if (key_cmpspidx_exactly(spidx, &sp->spidx)) {
SP_ADDREF(sp);
break;
}
}
SPTREE_RUNLOCK();
return sp;
}
static struct secpolicy *
key_getspbyid(uint32_t id)
{
SPTREE_RLOCK_TRACKER;
struct secpolicy *sp;
SPTREE_RLOCK();
LIST_FOREACH(sp, SPHASH_HASH(id), idhash) {
if (sp->id == id) {
SP_ADDREF(sp);
break;
}
}
SPTREE_RUNLOCK();
return (sp);
}
struct secpolicy *
key_newsp(void)
{
struct secpolicy *sp;
sp = malloc(sizeof(*sp), M_IPSEC_SP, M_NOWAIT | M_ZERO);
if (sp != NULL)
SP_INITREF(sp);
return (sp);
}
struct ipsecrequest *
ipsec_newisr(void)
{
return (malloc(sizeof(struct ipsecrequest), M_IPSEC_SR,
M_NOWAIT | M_ZERO));
}
void
ipsec_delisr(struct ipsecrequest *p)
{
free(p, M_IPSEC_SR);
}
struct secpolicy *
key_msg2sp(struct sadb_x_policy *xpl0, size_t len, int *error)
{
struct secpolicy *newsp;
IPSEC_ASSERT(xpl0 != NULL, ("null xpl0"));
IPSEC_ASSERT(len >= sizeof(*xpl0), ("policy too short: %zu", len));
if (len != PFKEY_EXTLEN(xpl0)) {
ipseclog((LOG_DEBUG, "%s: Invalid msg length.\n", __func__));
*error = EINVAL;
return NULL;
}
if ((newsp = key_newsp()) == NULL) {
*error = ENOBUFS;
return NULL;
}
newsp->spidx.dir = xpl0->sadb_x_policy_dir;
newsp->policy = xpl0->sadb_x_policy_type;
newsp->priority = xpl0->sadb_x_policy_priority;
newsp->tcount = 0;
switch (xpl0->sadb_x_policy_type) {
case IPSEC_POLICY_DISCARD:
case IPSEC_POLICY_NONE:
case IPSEC_POLICY_ENTRUST:
case IPSEC_POLICY_BYPASS:
break;
case IPSEC_POLICY_IPSEC:
{
struct sadb_x_ipsecrequest *xisr;
struct ipsecrequest *isr;
int tlen;
if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) {
ipseclog((LOG_DEBUG, "%s: Invalid msg length.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
tlen = PFKEY_EXTLEN(xpl0) - sizeof(*xpl0);
xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1);
while (tlen > 0) {
if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr) ||
xisr->sadb_x_ipsecrequest_len > tlen) {
ipseclog((LOG_DEBUG, "%s: invalid ipsecrequest "
"length.\n", __func__));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
if (newsp->tcount >= IPSEC_MAXREQ) {
ipseclog((LOG_DEBUG,
"%s: too many ipsecrequests.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return (NULL);
}
isr = ipsec_newisr();
if (isr == NULL) {
ipseclog((LOG_DEBUG,
"%s: No more memory.\n", __func__));
key_freesp(&newsp);
*error = ENOBUFS;
return NULL;
}
newsp->req[newsp->tcount++] = isr;
switch (xisr->sadb_x_ipsecrequest_proto) {
case IPPROTO_ESP:
case IPPROTO_AH:
case IPPROTO_IPCOMP:
break;
default:
ipseclog((LOG_DEBUG,
"%s: invalid proto type=%u\n", __func__,
xisr->sadb_x_ipsecrequest_proto));
key_freesp(&newsp);
*error = EPROTONOSUPPORT;
return NULL;
}
isr->saidx.proto =
(uint8_t)xisr->sadb_x_ipsecrequest_proto;
switch (xisr->sadb_x_ipsecrequest_mode) {
case IPSEC_MODE_TRANSPORT:
case IPSEC_MODE_TUNNEL:
break;
case IPSEC_MODE_ANY:
default:
ipseclog((LOG_DEBUG,
"%s: invalid mode=%u\n", __func__,
xisr->sadb_x_ipsecrequest_mode));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
isr->saidx.mode = xisr->sadb_x_ipsecrequest_mode;
switch (xisr->sadb_x_ipsecrequest_level) {
case IPSEC_LEVEL_DEFAULT:
case IPSEC_LEVEL_USE:
case IPSEC_LEVEL_REQUIRE:
break;
case IPSEC_LEVEL_UNIQUE:
if (xisr->sadb_x_ipsecrequest_reqid
> IPSEC_MANUAL_REQID_MAX) {
ipseclog((LOG_DEBUG,
"%s: reqid=%d range "
"violation, updated by kernel.\n",
__func__,
xisr->sadb_x_ipsecrequest_reqid));
xisr->sadb_x_ipsecrequest_reqid = 0;
}
if (xisr->sadb_x_ipsecrequest_reqid == 0) {
u_int32_t reqid;
if ((reqid = key_newreqid()) == 0) {
key_freesp(&newsp);
*error = ENOBUFS;
return NULL;
}
isr->saidx.reqid = reqid;
xisr->sadb_x_ipsecrequest_reqid = reqid;
} else {
isr->saidx.reqid =
xisr->sadb_x_ipsecrequest_reqid;
}
break;
default:
ipseclog((LOG_DEBUG, "%s: invalid level=%u\n",
__func__,
xisr->sadb_x_ipsecrequest_level));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
isr->level = xisr->sadb_x_ipsecrequest_level;
if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
struct sockaddr *paddr;
len = tlen - sizeof(*xisr);
paddr = (struct sockaddr *)(xisr + 1);
if (len < sizeof(struct sockaddr) ||
len < 2 * paddr->sa_len ||
paddr->sa_len > sizeof(isr->saidx.src)) {
ipseclog((LOG_DEBUG, "%s: invalid "
"request address length.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
if (xisr->sadb_x_ipsecrequest_len <
sizeof(*xisr) + 2 * paddr->sa_len) {
ipseclog((LOG_DEBUG, "%s: invalid "
"ipsecrequest length.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return (NULL);
}
bcopy(paddr, &isr->saidx.src, paddr->sa_len);
paddr = (struct sockaddr *)((caddr_t)paddr +
paddr->sa_len);
if (paddr->sa_len !=
isr->saidx.src.sa.sa_len) {
ipseclog((LOG_DEBUG, "%s: invalid "
"request address length.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
if (paddr->sa_family !=
isr->saidx.src.sa.sa_family) {
ipseclog((LOG_DEBUG, "%s: address "
"family doesn't match.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return (NULL);
}
bcopy(paddr, &isr->saidx.dst, paddr->sa_len);
} else {
if (isr->saidx.mode == IPSEC_MODE_TUNNEL) {
ipseclog((LOG_DEBUG, "%s: missing "
"request addresses.\n", __func__));
key_freesp(&newsp);
*error = EINVAL;
return (NULL);
}
}
tlen -= xisr->sadb_x_ipsecrequest_len;
if (tlen < 0) {
ipseclog((LOG_DEBUG, "%s: becoming tlen < 0.\n",
__func__));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
+ xisr->sadb_x_ipsecrequest_len);
}
if (newsp->tcount < 1) {
ipseclog((LOG_DEBUG, "%s: valid IPSEC transforms "
"not found.\n", __func__));
key_freesp(&newsp);
*error = EINVAL;
return (NULL);
}
}
break;
default:
ipseclog((LOG_DEBUG, "%s: invalid policy type.\n", __func__));
key_freesp(&newsp);
*error = EINVAL;
return NULL;
}
*error = 0;
return (newsp);
}
uint32_t
key_newreqid(void)
{
static uint32_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
if (auto_reqid == ~0)
auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
else
auto_reqid++;
return (auto_reqid);
}
static struct mbuf *
key_sp2mbuf(struct secpolicy *sp)
{
struct mbuf *m;
size_t tlen;
tlen = key_getspreqmsglen(sp);
m = m_get2(tlen, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, tlen);
m->m_len = tlen;
if (key_sp2msg(sp, m->m_data, &tlen) != 0) {
m_freem(m);
return (NULL);
}
return (m);
}
int
key_sp2msg(struct secpolicy *sp, void *request, size_t *len)
{
struct sadb_x_ipsecrequest *xisr;
struct sadb_x_policy *xpl;
struct ipsecrequest *isr;
size_t xlen, ilen;
caddr_t p;
int error, i;
#ifdef IPSEC_OFFLOAD
struct sadb_x_if_hw_offl *xif;
#endif
IPSEC_ASSERT(sp != NULL, ("null policy"));
xlen = sizeof(*xpl);
if (*len < xlen)
return (EINVAL);
error = 0;
bzero(request, *len);
xpl = (struct sadb_x_policy *)request;
xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
xpl->sadb_x_policy_type = sp->policy;
xpl->sadb_x_policy_dir = sp->spidx.dir;
xpl->sadb_x_policy_id = sp->id;
xpl->sadb_x_policy_priority = sp->priority;
switch (sp->state) {
case IPSEC_SPSTATE_IFNET:
xpl->sadb_x_policy_scope = IPSEC_POLICYSCOPE_IFNET;
break;
case IPSEC_SPSTATE_PCB:
xpl->sadb_x_policy_scope = IPSEC_POLICYSCOPE_PCB;
break;
default:
xpl->sadb_x_policy_scope = IPSEC_POLICYSCOPE_GLOBAL;
}
if (sp->policy == IPSEC_POLICY_IPSEC) {
p = (caddr_t)xpl + sizeof(*xpl);
for (i = 0; i < sp->tcount; i++) {
isr = sp->req[i];
ilen = PFKEY_ALIGN8(sizeof(*xisr) +
isr->saidx.src.sa.sa_len +
isr->saidx.dst.sa.sa_len);
xlen += ilen;
if (xlen > *len) {
error = ENOBUFS;
continue;
}
xisr = (struct sadb_x_ipsecrequest *)p;
xisr->sadb_x_ipsecrequest_len = ilen;
xisr->sadb_x_ipsecrequest_proto = isr->saidx.proto;
xisr->sadb_x_ipsecrequest_mode = isr->saidx.mode;
xisr->sadb_x_ipsecrequest_level = isr->level;
xisr->sadb_x_ipsecrequest_reqid = isr->saidx.reqid;
p += sizeof(*xisr);
bcopy(&isr->saidx.src, p, isr->saidx.src.sa.sa_len);
p += isr->saidx.src.sa.sa_len;
bcopy(&isr->saidx.dst, p, isr->saidx.dst.sa.sa_len);
p += isr->saidx.dst.sa.sa_len;
}
}
xpl->sadb_x_policy_len = PFKEY_UNIT64(xlen);
#ifdef IPSEC_OFFLOAD
if (error == 0 && sp->accel_ifname != NULL) {
xif = (struct sadb_x_if_hw_offl *)(xpl + 1);
bzero(xif, sizeof(*xif));
xif->sadb_x_if_hw_offl_len = PFKEY_UNIT64(sizeof(*xif));
xif->sadb_x_if_hw_offl_exttype = SADB_X_EXT_IF_HW_OFFL;
xif->sadb_x_if_hw_offl_flags = 0;
strncpy(xif->sadb_x_if_hw_offl_if, sp->accel_ifname,
sizeof(xif->sadb_x_if_hw_offl_if));
xlen += sizeof(*xif);
}
#endif
if (error == 0)
*len = xlen;
else
*len = sizeof(*xpl);
return (error);
}
static struct mbuf *
key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp,
int ndeep, int nitem, ...)
{
va_list ap;
int idx;
int i;
struct mbuf *result = NULL, *n;
int len;
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
va_start(ap, nitem);
for (i = 0; i < nitem; i++) {
idx = va_arg(ap, int);
if (idx < 0 || idx > SADB_EXT_MAX)
goto fail;
if (idx == SADB_EXT_RESERVED && mhp->msg == NULL)
continue;
if (idx != SADB_EXT_RESERVED &&
(mhp->ext[idx] == NULL || mhp->extlen[idx] == 0))
continue;
if (idx == SADB_EXT_RESERVED) {
len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
IPSEC_ASSERT(len <= MHLEN, ("header too big %u", len));
MGETHDR(n, M_NOWAIT, MT_DATA);
if (!n)
goto fail;
n->m_len = len;
n->m_next = NULL;
m_copydata(m, 0, sizeof(struct sadb_msg),
mtod(n, caddr_t));
} else if (i < ndeep) {
len = mhp->extlen[idx];
n = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (n == NULL)
goto fail;
m_align(n, len);
n->m_len = len;
m_copydata(m, mhp->extoff[idx], mhp->extlen[idx],
mtod(n, caddr_t));
} else {
n = m_copym(m, mhp->extoff[idx], mhp->extlen[idx],
M_NOWAIT);
}
if (n == NULL)
goto fail;
if (result)
m_cat(result, n);
else
result = n;
}
va_end(ap);
if ((result->m_flags & M_PKTHDR) != 0) {
result->m_pkthdr.len = 0;
for (n = result; n; n = n->m_next)
result->m_pkthdr.len += n->m_len;
}
return result;
fail:
m_freem(result);
va_end(ap);
return NULL;
}
static int
key_spdadd(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secpolicyindex spidx;
struct sadb_address *src0, *dst0;
struct sadb_x_policy *xpl0, *xpl;
struct sadb_lifetime *lft = NULL;
struct secpolicy *newsp, *oldsp;
int error;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKHDR(mhp, SADB_X_EXT_POLICY)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKLEN(mhp, SADB_X_EXT_POLICY)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD)) {
if (SADB_CHECKLEN(mhp, SADB_EXT_LIFETIME_HARD)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
lft = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
}
src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
switch (xpl0->sadb_x_policy_dir) {
case IPSEC_DIR_INBOUND:
case IPSEC_DIR_OUTBOUND:
break;
default:
ipseclog((LOG_DEBUG, "%s: invalid SP direction.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (xpl0->sadb_x_policy_type != IPSEC_POLICY_DISCARD &&
xpl0->sadb_x_policy_type != IPSEC_POLICY_NONE &&
xpl0->sadb_x_policy_type != IPSEC_POLICY_IPSEC) {
ipseclog((LOG_DEBUG, "%s: invalid policy type.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (xpl0->sadb_x_policy_type == IPSEC_POLICY_IPSEC &&
mhp->extlen[SADB_X_EXT_POLICY] <= sizeof(*xpl0)) {
ipseclog((LOG_DEBUG,
"%s: policy requests required.\n", __func__));
return key_senderror(so, m, EINVAL);
}
error = key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1));
if (error != 0 ||
src0->sadb_address_proto != dst0->sadb_address_proto) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return key_senderror(so, m, error);
}
KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
src0 + 1,
dst0 + 1,
src0->sadb_address_prefixlen,
dst0->sadb_address_prefixlen,
src0->sadb_address_proto,
&spidx);
oldsp = key_getsp(&spidx);
if (oldsp != NULL) {
if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
KEYDBG(KEY_STAMP,
printf("%s: unlink SP(%p) for SPDUPDATE\n",
__func__, oldsp));
KEYDBG(KEY_DATA, kdebug_secpolicy(oldsp));
} else {
key_freesp(&oldsp);
ipseclog((LOG_DEBUG,
"%s: a SP entry exists already.\n", __func__));
return (key_senderror(so, m, EEXIST));
}
}
if ((newsp = key_msg2sp(xpl0, PFKEY_EXTLEN(xpl0), &error)) == NULL) {
if (oldsp != NULL) {
key_unlink(oldsp);
key_freesp(&oldsp);
}
return key_senderror(so, m, error);
}
newsp->lastused = newsp->created = time_second;
newsp->lifetime = lft ? lft->sadb_lifetime_addtime : 0;
newsp->validtime = lft ? lft->sadb_lifetime_usetime : 0;
bcopy(&spidx, &newsp->spidx, sizeof(spidx));
#ifdef IPSEC_OFFLOAD
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_IF_HW_OFFL) &&
!SADB_CHECKLEN(mhp, SADB_X_EXT_IF_HW_OFFL)) {
struct sadb_x_if_hw_offl *xof;
xof = (struct sadb_x_if_hw_offl *)mhp->ext[
SADB_X_EXT_IF_HW_OFFL];
newsp->accel_ifname = malloc(sizeof(xof->sadb_x_if_hw_offl_if),
M_IPSEC_MISC, M_NOWAIT);
if (newsp->accel_ifname == NULL) {
ipseclog((LOG_DEBUG, "%s: cannot alloc accel_ifname.\n",
__func__));
key_freesp(&newsp);
return (key_senderror(so, m, error));
}
strncpy(__DECONST(char *, newsp->accel_ifname),
xof->sadb_x_if_hw_offl_if,
sizeof(xof->sadb_x_if_hw_offl_if));
}
#endif
SPTREE_WLOCK();
if ((newsp->id = key_getnewspid()) == 0) {
if (oldsp != NULL)
key_detach(oldsp);
SPTREE_WUNLOCK();
if (oldsp != NULL) {
ipsec_accel_sync();
key_freesp(&oldsp);
IPSEC_ASSERT(oldsp != NULL, ("null oldsp: refcount bug"));
key_freesp(&oldsp);
if (SPDCACHE_ENABLED())
spdcache_clear();
}
key_freesp(&newsp);
return key_senderror(so, m, ENOBUFS);
}
if (oldsp != NULL)
key_detach(oldsp);
key_insertsp(newsp);
SPTREE_WUNLOCK();
if (oldsp != NULL) {
ipsec_accel_sync();
key_freesp(&oldsp);
IPSEC_ASSERT(oldsp != NULL, ("null oldsp: refcount bug"));
key_freesp(&oldsp);
}
if (SPDCACHE_ENABLED())
spdcache_clear();
KEYDBG(KEY_STAMP,
printf("%s: SP(%p)\n", __func__, newsp));
KEYDBG(KEY_DATA, kdebug_secpolicy(newsp));
{
struct mbuf *n, *mpolicy;
struct sadb_msg *newmsg;
int off;
if (lft) {
n = key_gather_mbuf(m, mhp, 2, 5, SADB_EXT_RESERVED,
SADB_X_EXT_POLICY, SADB_EXT_LIFETIME_HARD,
SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
} else {
n = key_gather_mbuf(m, mhp, 2, 4, SADB_EXT_RESERVED,
SADB_X_EXT_POLICY,
SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
}
if (!n)
return key_senderror(so, m, ENOBUFS);
if (n->m_len < sizeof(*newmsg)) {
n = m_pullup(n, sizeof(*newmsg));
if (!n)
return key_senderror(so, m, ENOBUFS);
}
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
off = 0;
mpolicy = m_pulldown(n, PFKEY_ALIGN8(sizeof(struct sadb_msg)),
sizeof(*xpl), &off);
if (mpolicy == NULL) {
return key_senderror(so, m, ENOBUFS);
}
xpl = (struct sadb_x_policy *)(mtod(mpolicy, caddr_t) + off);
if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
m_freem(n);
return key_senderror(so, m, EINVAL);
}
xpl->sadb_x_policy_id = newsp->id;
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
static uint32_t
key_getnewspid(void)
{
struct secpolicy *sp;
uint32_t newid = 0;
int tries, limit;
SPTREE_WLOCK_ASSERT();
limit = atomic_load_int(&V_key_spi_trycnt);
for (tries = 0; tries < limit; tries++) {
if (V_policy_id == ~0)
newid = V_policy_id = 1;
else
newid = ++V_policy_id;
LIST_FOREACH(sp, SPHASH_HASH(newid), idhash) {
if (sp->id == newid)
break;
}
if (sp == NULL)
break;
}
if (tries == limit || newid == 0) {
ipseclog((LOG_DEBUG, "%s: failed to allocate policy id.\n",
__func__));
return (0);
}
return (newid);
}
static int
key_spddelete(struct socket *so, struct mbuf *m,
const struct sadb_msghdr *mhp)
{
struct secpolicyindex spidx;
struct sadb_address *src0, *dst0;
struct sadb_x_policy *xpl0;
struct secpolicy *sp;
IPSEC_ASSERT(so != NULL, ("null so"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKHDR(mhp, SADB_X_EXT_POLICY)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKLEN(mhp, SADB_X_EXT_POLICY)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return key_senderror(so, m, EINVAL);
}
src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
switch (xpl0->sadb_x_policy_dir) {
case IPSEC_DIR_INBOUND:
case IPSEC_DIR_OUTBOUND:
break;
default:
ipseclog((LOG_DEBUG, "%s: invalid SP direction.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (xpl0->sadb_x_policy_type != IPSEC_POLICY_DISCARD &&
xpl0->sadb_x_policy_type != IPSEC_POLICY_NONE &&
xpl0->sadb_x_policy_type != IPSEC_POLICY_IPSEC) {
ipseclog((LOG_DEBUG, "%s: invalid policy type.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1)) != 0 ||
src0->sadb_address_proto != dst0->sadb_address_proto) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return key_senderror(so, m, EINVAL);
}
KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
src0 + 1,
dst0 + 1,
src0->sadb_address_prefixlen,
dst0->sadb_address_prefixlen,
src0->sadb_address_proto,
&spidx);
if ((sp = key_getsp(&spidx)) == NULL) {
ipseclog((LOG_DEBUG, "%s: no SP found.\n", __func__));
return key_senderror(so, m, EINVAL);
}
xpl0->sadb_x_policy_id = sp->id;
KEYDBG(KEY_STAMP,
printf("%s: SP(%p)\n", __func__, sp));
KEYDBG(KEY_DATA, kdebug_secpolicy(sp));
ipsec_accel_spddel(sp);
key_unlink(sp);
key_freesp(&sp);
{
struct mbuf *n;
struct sadb_msg *newmsg;
n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
SADB_X_EXT_POLICY, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
if (!n)
return key_senderror(so, m, ENOBUFS);
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
static int
key_spddelete2(struct socket *so, struct mbuf *m,
const struct sadb_msghdr *mhp)
{
struct secpolicy *sp;
uint32_t id;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (SADB_CHECKHDR(mhp, SADB_X_EXT_POLICY) ||
SADB_CHECKLEN(mhp, SADB_X_EXT_POLICY)) {
ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
id = ((struct sadb_x_policy *)
mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
if ((sp = key_getspbyid(id)) == NULL) {
ipseclog((LOG_DEBUG, "%s: no SP found for id %u.\n",
__func__, id));
return key_senderror(so, m, EINVAL);
}
KEYDBG(KEY_STAMP,
printf("%s: SP(%p)\n", __func__, sp));
KEYDBG(KEY_DATA, kdebug_secpolicy(sp));
key_unlink(sp);
if (sp->state != IPSEC_SPSTATE_DEAD) {
ipseclog((LOG_DEBUG, "%s: failed to delete SP with id %u.\n",
__func__, id));
key_freesp(&sp);
return (key_senderror(so, m, EACCES));
}
key_freesp(&sp);
{
struct mbuf *n, *nn;
struct sadb_msg *newmsg;
int off, len;
len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
n = key_mget(len);
if (n == NULL)
return key_senderror(so, m, ENOBUFS);
n->m_len = len;
n->m_next = NULL;
off = 0;
m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
IPSEC_ASSERT(off == len, ("length inconsistency (off %u len %u)",
off, len));
n->m_next = m_copym(m, mhp->extoff[SADB_X_EXT_POLICY],
mhp->extlen[SADB_X_EXT_POLICY], M_NOWAIT);
if (!n->m_next) {
m_freem(n);
return key_senderror(so, m, ENOBUFS);
}
n->m_pkthdr.len = 0;
for (nn = n; nn; nn = nn->m_next)
n->m_pkthdr.len += nn->m_len;
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
static int
key_spdget(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secpolicy *sp;
struct mbuf *n;
uint32_t id;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (SADB_CHECKHDR(mhp, SADB_X_EXT_POLICY) ||
SADB_CHECKLEN(mhp, SADB_X_EXT_POLICY)) {
ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
id = ((struct sadb_x_policy *)
mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
if ((sp = key_getspbyid(id)) == NULL) {
ipseclog((LOG_DEBUG, "%s: no SP found for id %u.\n",
__func__, id));
return key_senderror(so, m, ENOENT);
}
n = key_setdumpsp(sp, SADB_X_SPDGET, mhp->msg->sadb_msg_seq,
mhp->msg->sadb_msg_pid);
key_freesp(&sp);
if (n != NULL) {
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
} else
return key_senderror(so, m, ENOBUFS);
}
int
key_spdacquire(struct secpolicy *sp)
{
struct mbuf *result = NULL, *m;
struct secspacq *newspacq;
IPSEC_ASSERT(sp != NULL, ("null secpolicy"));
IPSEC_ASSERT(sp->req == NULL, ("policy exists"));
IPSEC_ASSERT(sp->policy == IPSEC_POLICY_IPSEC,
("policy not IPSEC %u", sp->policy));
newspacq = key_getspacq(&sp->spidx);
if (newspacq != NULL) {
if (V_key_blockacq_count < newspacq->count) {
newspacq->count = 0;
} else {
newspacq->count++;
SPACQ_UNLOCK();
return (0);
}
SPACQ_UNLOCK();
} else {
newspacq = key_newspacq(&sp->spidx);
if (newspacq == NULL)
return ENOBUFS;
}
m = key_setsadbmsg(SADB_X_SPDACQUIRE, 0, 0, 0, 0, 0);
if (!m)
return ENOBUFS;
result = m;
result->m_pkthdr.len = 0;
for (m = result; m; m = m->m_next)
result->m_pkthdr.len += m->m_len;
mtod(result, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(result->m_pkthdr.len);
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
}
static int
key_spdflush(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secpolicy_queue drainq;
struct sadb_msg *newmsg;
struct secpolicy *sp, *nextsp;
u_int dir;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg)))
return key_senderror(so, m, EINVAL);
TAILQ_INIT(&drainq);
SPTREE_WLOCK();
for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
TAILQ_CONCAT(&drainq, &V_sptree[dir], chain);
}
TAILQ_FOREACH(sp, &drainq, chain) {
sp->state = IPSEC_SPSTATE_DEAD;
ipsec_accel_spddel(sp);
LIST_REMOVE(sp, idhash);
}
V_sp_genid++;
V_spd_size = 0;
SPTREE_WUNLOCK();
if (SPDCACHE_ENABLED())
spdcache_clear();
sp = TAILQ_FIRST(&drainq);
while (sp != NULL) {
nextsp = TAILQ_NEXT(sp, chain);
key_freesp(&sp);
sp = nextsp;
}
if (sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return key_senderror(so, m, ENOBUFS);
}
if (m->m_next)
m_freem(m->m_next);
m->m_next = NULL;
m->m_pkthdr.len = m->m_len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
newmsg = mtod(m, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
}
static uint8_t
key_satype2scopemask(uint8_t satype)
{
if (satype == IPSEC_POLICYSCOPE_ANY)
return (0xff);
return (satype);
}
static int
key_spddump(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
SPTREE_RLOCK_TRACKER;
struct secpolicy *sp;
struct mbuf *n;
int cnt;
u_int dir, scope;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
cnt = 0;
scope = key_satype2scopemask(mhp->msg->sadb_msg_satype);
SPTREE_RLOCK();
for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
if (scope & IPSEC_POLICYSCOPE_GLOBAL) {
TAILQ_FOREACH(sp, &V_sptree[dir], chain)
cnt++;
}
if (scope & IPSEC_POLICYSCOPE_IFNET) {
TAILQ_FOREACH(sp, &V_sptree_ifnet[dir], chain)
cnt++;
}
}
if (cnt == 0) {
SPTREE_RUNLOCK();
return key_senderror(so, m, ENOENT);
}
for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
if (scope & IPSEC_POLICYSCOPE_GLOBAL) {
TAILQ_FOREACH(sp, &V_sptree[dir], chain) {
--cnt;
n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt,
mhp->msg->sadb_msg_pid);
if (n != NULL)
key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
}
if (scope & IPSEC_POLICYSCOPE_IFNET) {
TAILQ_FOREACH(sp, &V_sptree_ifnet[dir], chain) {
--cnt;
n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt,
mhp->msg->sadb_msg_pid);
if (n != NULL)
key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
}
}
SPTREE_RUNLOCK();
m_freem(m);
return (0);
}
static struct mbuf *
key_setdumpsp(struct secpolicy *sp, u_int8_t type, u_int32_t seq,
u_int32_t pid)
{
struct mbuf *result = NULL, *m;
struct seclifetime lt;
m = key_setsadbmsg(type, 0, SADB_SATYPE_UNSPEC, seq, pid, sp->refcnt);
if (!m)
goto fail;
result = m;
m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
&sp->spidx.src.sa, sp->spidx.prefs,
sp->spidx.ul_proto);
if (!m)
goto fail;
m_cat(result, m);
m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
&sp->spidx.dst.sa, sp->spidx.prefd,
sp->spidx.ul_proto);
if (!m)
goto fail;
m_cat(result, m);
m = key_sp2mbuf(sp);
if (!m)
goto fail;
m_cat(result, m);
if(sp->lifetime){
lt.addtime=sp->created;
lt.usetime= sp->lastused;
m = key_setlifetime(<, SADB_EXT_LIFETIME_CURRENT);
if (!m)
goto fail;
m_cat(result, m);
lt.addtime=sp->lifetime;
lt.usetime= sp->validtime;
m = key_setlifetime(<, SADB_EXT_LIFETIME_HARD);
if (!m)
goto fail;
m_cat(result, m);
}
if ((result->m_flags & M_PKTHDR) == 0)
goto fail;
if (result->m_len < sizeof(struct sadb_msg)) {
result = m_pullup(result, sizeof(struct sadb_msg));
if (result == NULL)
goto fail;
}
result->m_pkthdr.len = 0;
for (m = result; m; m = m->m_next)
result->m_pkthdr.len += m->m_len;
mtod(result, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(result->m_pkthdr.len);
return result;
fail:
m_freem(result);
return NULL;
}
static size_t
key_getspreqmsglen(struct secpolicy *sp)
{
size_t tlen, len;
int i;
tlen = sizeof(struct sadb_x_policy);
if (sp->policy != IPSEC_POLICY_IPSEC)
return (tlen);
for (i = 0; i < sp->tcount; i++) {
len = sizeof(struct sadb_x_ipsecrequest)
+ sp->req[i]->saidx.src.sa.sa_len
+ sp->req[i]->saidx.dst.sa.sa_len;
tlen += PFKEY_ALIGN8(len);
}
#ifdef IPSEC_OFFLOAD
if (sp->accel_ifname != NULL)
tlen += sizeof(struct sadb_x_if_hw_offl);
#endif
return (tlen);
}
static int
key_spdexpire(struct secpolicy *sp)
{
struct sadb_lifetime *lt;
struct mbuf *result = NULL, *m;
int len, error = -1;
IPSEC_ASSERT(sp != NULL, ("null secpolicy"));
KEYDBG(KEY_STAMP,
printf("%s: SP(%p)\n", __func__, sp));
KEYDBG(KEY_DATA, kdebug_secpolicy(sp));
m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0);
if (!m) {
error = ENOBUFS;
goto fail;
}
result = m;
len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL) {
error = ENOBUFS;
goto fail;
}
m_align(m, len);
m->m_len = len;
bzero(mtod(m, caddr_t), len);
lt = mtod(m, struct sadb_lifetime *);
lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
lt->sadb_lifetime_allocations = 0;
lt->sadb_lifetime_bytes = 0;
lt->sadb_lifetime_addtime = sp->created;
lt->sadb_lifetime_usetime = sp->lastused;
lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
lt->sadb_lifetime_allocations = 0;
lt->sadb_lifetime_bytes = 0;
lt->sadb_lifetime_addtime = sp->lifetime;
lt->sadb_lifetime_usetime = sp->validtime;
m_cat(result, m);
m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
&sp->spidx.src.sa,
sp->spidx.prefs, sp->spidx.ul_proto);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
&sp->spidx.dst.sa,
sp->spidx.prefd, sp->spidx.ul_proto);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
m = key_sp2mbuf(sp);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
if ((result->m_flags & M_PKTHDR) == 0) {
error = EINVAL;
goto fail;
}
if (result->m_len < sizeof(struct sadb_msg)) {
result = m_pullup(result, sizeof(struct sadb_msg));
if (result == NULL) {
error = ENOBUFS;
goto fail;
}
}
result->m_pkthdr.len = 0;
for (m = result; m; m = m->m_next)
result->m_pkthdr.len += m->m_len;
mtod(result, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(result->m_pkthdr.len);
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
fail:
if (result)
m_freem(result);
return error;
}
static struct secashead *
key_newsah(struct secasindex *saidx)
{
struct secashead *sah;
sah = malloc(sizeof(struct secashead), M_IPSEC_SAH,
M_NOWAIT | M_ZERO);
if (sah == NULL) {
PFKEYSTAT_INC(in_nomem);
return (NULL);
}
TAILQ_INIT(&sah->savtree_larval);
TAILQ_INIT(&sah->savtree_alive);
sah->saidx = *saidx;
sah->state = SADB_SASTATE_DEAD;
SAH_INITREF(sah);
KEYDBG(KEY_STAMP,
printf("%s: SAH(%p)\n", __func__, sah));
KEYDBG(KEY_DATA, kdebug_secash(sah, NULL));
return (sah);
}
static void
key_freesah(struct secashead **psah)
{
struct secashead *sah = *psah;
CURVNET_ASSERT_SET();
if (SAH_DELREF(sah) == 0)
return;
KEYDBG(KEY_STAMP,
printf("%s: last reference to SAH(%p)\n", __func__, sah));
KEYDBG(KEY_DATA, kdebug_secash(sah, NULL));
*psah = NULL;
key_delsah(sah);
}
static void
key_delsah(struct secashead *sah)
{
IPSEC_ASSERT(sah != NULL, ("NULL sah"));
IPSEC_ASSERT(sah->state == SADB_SASTATE_DEAD,
("Attempt to free non DEAD SAH %p", sah));
IPSEC_ASSERT(TAILQ_EMPTY(&sah->savtree_larval),
("Attempt to free SAH %p with LARVAL SA", sah));
IPSEC_ASSERT(TAILQ_EMPTY(&sah->savtree_alive),
("Attempt to free SAH %p with ALIVE SA", sah));
free(sah, M_IPSEC_SAH);
}
static struct secasvar *
key_newsav(const struct sadb_msghdr *mhp, struct secasindex *saidx,
uint32_t spi, int *errp)
{
struct secashead *sah;
struct secasvar *sav;
int isnew;
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
IPSEC_ASSERT(mhp->msg->sadb_msg_type == SADB_GETSPI ||
mhp->msg->sadb_msg_type == SADB_ADD, ("wrong message type"));
sav = NULL;
sah = NULL;
switch (saidx->proto) {
case IPPROTO_ESP:
case IPPROTO_AH:
if (ntohl(spi) <= 255) {
ipseclog((LOG_DEBUG, "%s: illegal range of SPI %u.\n",
__func__, ntohl(spi)));
*errp = EINVAL;
goto done;
}
break;
}
sav = malloc(sizeof(struct secasvar), M_IPSEC_SA, M_NOWAIT | M_ZERO);
if (sav == NULL) {
*errp = ENOBUFS;
goto done;
}
sav->lock = malloc_aligned(max(sizeof(struct rmlock),
CACHE_LINE_SIZE), CACHE_LINE_SIZE, M_IPSEC_MISC,
M_NOWAIT | M_ZERO);
if (sav->lock == NULL) {
*errp = ENOBUFS;
goto done;
}
rm_init(sav->lock, "ipsec association");
sav->lft_c = uma_zalloc_pcpu(ipsec_key_lft_zone, M_NOWAIT | M_ZERO);
if (sav->lft_c == NULL) {
*errp = ENOBUFS;
goto done;
}
sav->spi = spi;
sav->seq = mhp->msg->sadb_msg_seq;
sav->state = SADB_SASTATE_LARVAL;
sav->pid = (pid_t)mhp->msg->sadb_msg_pid;
SAV_INITREF(sav);
#ifdef IPSEC_OFFLOAD
CK_LIST_INIT(&sav->accel_ifps);
sav->accel_forget_tq = 0;
sav->accel_lft_sw = uma_zalloc_pcpu(ipsec_key_lft_zone,
M_NOWAIT | M_ZERO);
if (sav->accel_lft_sw == NULL) {
*errp = ENOBUFS;
goto done;
}
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_IF_HW_OFFL) &&
!SADB_CHECKLEN(mhp, SADB_X_EXT_IF_HW_OFFL)) {
struct sadb_x_if_hw_offl *xof;
xof = (struct sadb_x_if_hw_offl *)mhp->ext[
SADB_X_EXT_IF_HW_OFFL];
sav->accel_ifname = malloc(sizeof(xof->sadb_x_if_hw_offl_if),
M_IPSEC_MISC, M_NOWAIT);
if (sav->accel_ifname == NULL) {
*errp = ENOBUFS;
goto done;
}
strncpy(__DECONST(char *, sav->accel_ifname),
xof->sadb_x_if_hw_offl_if,
sizeof(xof->sadb_x_if_hw_offl_if));
}
#endif
again:
sah = key_getsah(saidx);
if (sah == NULL) {
sah = key_newsah(saidx);
if (sah == NULL) {
ipseclog((LOG_DEBUG,
"%s: No more memory.\n", __func__));
*errp = ENOBUFS;
goto done;
}
isnew = 1;
} else
isnew = 0;
sav->sah = sah;
if (mhp->msg->sadb_msg_type == SADB_GETSPI) {
sav->created = time_second;
} else if (sav->state == SADB_SASTATE_LARVAL) {
*errp = key_setsaval(sav, mhp);
if (*errp != 0)
goto done;
sav->state = SADB_SASTATE_MATURE;
}
SAHTREE_WLOCK();
if (isnew == 0 && sah->state == SADB_SASTATE_DEAD) {
SAHTREE_WUNLOCK();
key_freesah(&sah);
goto again;
}
if (isnew != 0) {
TAILQ_INSERT_HEAD(&V_sahtree, sah, chain);
LIST_INSERT_HEAD(SAHADDRHASH_HASH(saidx), sah, addrhash);
sah->state = SADB_SASTATE_MATURE;
SAH_ADDREF(sah);
}
if (sav->state == SADB_SASTATE_MATURE) {
TAILQ_INSERT_HEAD(&sah->savtree_alive, sav, chain);
ipsec_accel_sa_newkey(sav);
} else
TAILQ_INSERT_HEAD(&sah->savtree_larval, sav, chain);
LIST_INSERT_HEAD(SAVHASH_HASH(sav->spi), sav, spihash);
SAHTREE_WUNLOCK();
*errp = 0;
done:
if (*errp != 0) {
if (sav != NULL) {
if (sav->lock != NULL) {
rm_destroy(sav->lock);
free(sav->lock, M_IPSEC_MISC);
}
if (sav->lft_c != NULL)
uma_zfree_pcpu(ipsec_key_lft_zone, sav->lft_c);
#ifdef IPSEC_OFFLOAD
if (sav->accel_lft_sw != NULL)
uma_zfree_pcpu(ipsec_key_lft_zone,
sav->accel_lft_sw);
free(__DECONST(char *, sav->accel_ifname),
M_IPSEC_MISC);
#endif
free(sav, M_IPSEC_SA), sav = NULL;
}
if (sah != NULL)
key_freesah(&sah);
if (*errp == ENOBUFS) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
PFKEYSTAT_INC(in_nomem);
}
}
return (sav);
}
static void
key_cleansav(struct secasvar *sav)
{
if (sav->natt != NULL) {
free(sav->natt, M_IPSEC_MISC);
sav->natt = NULL;
}
if (sav->flags & SADB_X_EXT_F_CLONED)
return;
if (sav->tdb_xform != NULL) {
sav->tdb_xform->xf_cleanup(sav);
sav->tdb_xform = NULL;
}
if (sav->key_auth != NULL) {
zfree(sav->key_auth->key_data, M_IPSEC_MISC);
free(sav->key_auth, M_IPSEC_MISC);
sav->key_auth = NULL;
}
if (sav->key_enc != NULL) {
zfree(sav->key_enc->key_data, M_IPSEC_MISC);
free(sav->key_enc, M_IPSEC_MISC);
sav->key_enc = NULL;
}
if (sav->replay != NULL) {
mtx_destroy(&sav->replay->lock);
if (sav->replay->bitmap != NULL)
free(sav->replay->bitmap, M_IPSEC_MISC);
free(sav->replay, M_IPSEC_MISC);
sav->replay = NULL;
}
if (sav->lft_h != NULL) {
free(sav->lft_h, M_IPSEC_MISC);
sav->lft_h = NULL;
}
if (sav->lft_s != NULL) {
free(sav->lft_s, M_IPSEC_MISC);
sav->lft_s = NULL;
}
}
static void
key_delsav(struct secasvar *sav)
{
IPSEC_ASSERT(sav != NULL, ("null sav"));
IPSEC_ASSERT(sav->state == SADB_SASTATE_DEAD,
("attempt to free non DEAD SA %p", sav));
IPSEC_ASSERT(sav->refcnt == 0, ("reference count %u > 0",
sav->refcnt));
#ifdef IPSEC_OFFLOAD
KASSERT(CK_LIST_EMPTY(&sav->accel_ifps),
("key_unlinksav: sav %p still offloaded", sav));
#endif
key_cleansav(sav);
if ((sav->flags & SADB_X_EXT_F_CLONED) == 0) {
rm_destroy(sav->lock);
free(sav->lock, M_IPSEC_MISC);
uma_zfree_pcpu(ipsec_key_lft_zone, sav->lft_c);
}
#ifdef IPSEC_OFFLOAD
uma_zfree_pcpu(ipsec_key_lft_zone, sav->accel_lft_sw);
free(__DECONST(char *, sav->accel_ifname), M_IPSEC_MISC);
#endif
free(sav, M_IPSEC_SA);
}
static struct secashead *
key_getsah(struct secasindex *saidx)
{
SAHTREE_RLOCK_TRACKER;
struct secashead *sah;
SAHTREE_RLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(saidx), addrhash) {
if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID) != 0) {
SAH_ADDREF(sah);
break;
}
}
SAHTREE_RUNLOCK();
return (sah);
}
static int
key_checkspidup(uint32_t spi)
{
SAHTREE_RLOCK_TRACKER;
struct secasvar *sav;
SAHTREE_RLOCK();
LIST_FOREACH(sav, SAVHASH_HASH(spi), spihash) {
if (sav->spi == spi)
break;
}
SAHTREE_RUNLOCK();
return (sav != NULL);
}
static struct secasvar *
key_getsavbyspi(uint32_t spi)
{
SAHTREE_RLOCK_TRACKER;
struct secasvar *sav;
SAHTREE_RLOCK();
LIST_FOREACH(sav, SAVHASH_HASH(spi), spihash) {
if (sav->spi != spi)
continue;
SAV_ADDREF(sav);
break;
}
SAHTREE_RUNLOCK();
return (sav);
}
static int
key_updatelifetimes(struct secasvar *sav, const struct sadb_msghdr *mhp)
{
struct seclifetime *lft_h, *lft_s, *tmp;
if (SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD) &&
SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT)) {
if (sav->state == SADB_SASTATE_MATURE) {
lft_h = lft_s = NULL;
goto reset;
}
return (0);
}
if ((SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD) &&
!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT)) ||
(SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT) &&
!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD))) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return (EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_LIFETIME_HARD) ||
SADB_CHECKLEN(mhp, SADB_EXT_LIFETIME_SOFT)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return (EINVAL);
}
lft_h = key_dup_lifemsg((const struct sadb_lifetime *)
mhp->ext[SADB_EXT_LIFETIME_HARD], M_IPSEC_MISC);
if (lft_h == NULL) {
PFKEYSTAT_INC(in_nomem);
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return (ENOBUFS);
}
lft_s = key_dup_lifemsg((const struct sadb_lifetime *)
mhp->ext[SADB_EXT_LIFETIME_SOFT], M_IPSEC_MISC);
if (lft_s == NULL) {
PFKEYSTAT_INC(in_nomem);
free(lft_h, M_IPSEC_MISC);
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return (ENOBUFS);
}
reset:
if (sav->state != SADB_SASTATE_LARVAL) {
SECASVAR_WLOCK(sav);
tmp = sav->lft_h;
sav->lft_h = lft_h;
lft_h = tmp;
tmp = sav->lft_s;
sav->lft_s = lft_s;
lft_s = tmp;
SECASVAR_WUNLOCK(sav);
if (lft_h != NULL)
free(lft_h, M_IPSEC_MISC);
if (lft_s != NULL)
free(lft_s, M_IPSEC_MISC);
return (0);
}
IPSEC_ASSERT(sav->lft_h == NULL, ("lft_h is already initialized\n"));
IPSEC_ASSERT(sav->lft_s == NULL, ("lft_s is already initialized\n"));
sav->lft_h = lft_h;
sav->lft_s = lft_s;
return (0);
}
static int
key_setsaval(struct secasvar *sav, const struct sadb_msghdr *mhp)
{
const struct sadb_sa *sa0;
const struct sadb_key *key0;
uint32_t replay;
size_t len;
int error;
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
IPSEC_ASSERT(sav->state == SADB_SASTATE_LARVAL,
("Attempt to update non LARVAL SA"));
error = key_setident(sav->sah, mhp);
if (error != 0)
goto fail;
if (!SADB_CHECKHDR(mhp, SADB_EXT_SA)) {
if (SADB_CHECKLEN(mhp, SADB_EXT_SA)) {
error = EINVAL;
goto fail;
}
sa0 = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
sav->alg_auth = sa0->sadb_sa_auth;
sav->alg_enc = sa0->sadb_sa_encrypt;
sav->flags = sa0->sadb_sa_flags;
if ((sav->flags & SADB_KEY_FLAGS_MAX) != sav->flags) {
ipseclog((LOG_DEBUG,
"%s: invalid sa_flags 0x%08x.\n", __func__,
sav->flags));
error = EINVAL;
goto fail;
}
replay = 0;
if ((sa0->sadb_sa_flags & SADB_X_EXT_OLD) == 0)
replay = sa0->sadb_sa_replay;
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_SA_REPLAY)) {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_SA_REPLAY)) {
error = EINVAL;
goto fail;
}
replay = ((const struct sadb_x_sa_replay *)
mhp->ext[SADB_X_EXT_SA_REPLAY])->sadb_x_sa_replay_replay;
if (replay > UINT32_MAX - 32) {
ipseclog((LOG_DEBUG,
"%s: replay window too big.\n", __func__));
error = EINVAL;
goto fail;
}
replay = (replay + 7) >> 3;
}
sav->replay = malloc(sizeof(struct secreplay), M_IPSEC_MISC,
M_NOWAIT | M_ZERO);
if (sav->replay == NULL) {
PFKEYSTAT_INC(in_nomem);
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
error = ENOBUFS;
goto fail;
}
mtx_init(&sav->replay->lock, "ipsec replay", NULL, MTX_DEF);
if (replay != 0) {
uint32_t bitmap_size;
bitmap_size = 1;
while (replay + 4 > bitmap_size)
bitmap_size <<= 1;
bitmap_size = bitmap_size / 4;
sav->replay->bitmap = malloc(
bitmap_size * sizeof(uint32_t), M_IPSEC_MISC,
M_NOWAIT | M_ZERO);
if (sav->replay->bitmap == NULL) {
PFKEYSTAT_INC(in_nomem);
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
error = ENOBUFS;
goto fail;
}
sav->replay->bitmap_size = bitmap_size;
sav->replay->wsize = replay;
}
}
if (!SADB_CHECKHDR(mhp, SADB_EXT_KEY_AUTH)) {
if (SADB_CHECKLEN(mhp, SADB_EXT_KEY_AUTH)) {
error = EINVAL;
goto fail;
}
error = 0;
key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_AUTH];
len = mhp->extlen[SADB_EXT_KEY_AUTH];
switch (mhp->msg->sadb_msg_satype) {
case SADB_SATYPE_AH:
case SADB_SATYPE_ESP:
case SADB_X_SATYPE_TCPSIGNATURE:
if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
sav->alg_auth != SADB_X_AALG_NULL)
error = EINVAL;
if (key0->sadb_key_bits == 0 || (sizeof(struct sadb_key) +
(key0->sadb_key_bits >> 3)) > len)
error = EINVAL;
break;
case SADB_X_SATYPE_IPCOMP:
default:
error = EINVAL;
break;
}
if (error) {
ipseclog((LOG_DEBUG, "%s: invalid key_auth values.\n",
__func__));
goto fail;
}
sav->key_auth = key_dup_keymsg(key0, M_IPSEC_MISC);
if (sav->key_auth == NULL ) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
PFKEYSTAT_INC(in_nomem);
error = ENOBUFS;
goto fail;
}
}
if (!SADB_CHECKHDR(mhp, SADB_EXT_KEY_ENCRYPT)) {
if (SADB_CHECKLEN(mhp, SADB_EXT_KEY_ENCRYPT)) {
error = EINVAL;
goto fail;
}
error = 0;
key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_ENCRYPT];
len = mhp->extlen[SADB_EXT_KEY_ENCRYPT];
switch (mhp->msg->sadb_msg_satype) {
case SADB_SATYPE_ESP:
if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
sav->alg_enc != SADB_EALG_NULL) {
error = EINVAL;
break;
}
if (key0->sadb_key_bits == 0 || (sizeof(struct sadb_key) +
(key0->sadb_key_bits >> 3)) > len) {
error = EINVAL;
break;
}
sav->key_enc = key_dup_keymsg(key0, M_IPSEC_MISC);
if (sav->key_enc == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
PFKEYSTAT_INC(in_nomem);
error = ENOBUFS;
goto fail;
}
break;
case SADB_X_SATYPE_IPCOMP:
if (len != PFKEY_ALIGN8(sizeof(struct sadb_key)))
error = EINVAL;
sav->key_enc = NULL;
break;
case SADB_SATYPE_AH:
case SADB_X_SATYPE_TCPSIGNATURE:
default:
error = EINVAL;
break;
}
if (error) {
ipseclog((LOG_DEBUG, "%s: invalid key_enc value.\n",
__func__));
goto fail;
}
}
sav->ivlen = 0;
switch (mhp->msg->sadb_msg_satype) {
case SADB_SATYPE_AH:
if (sav->flags & SADB_X_EXT_DERIV) {
ipseclog((LOG_DEBUG, "%s: invalid flag (derived) "
"given to AH SA.\n", __func__));
error = EINVAL;
goto fail;
}
if (sav->alg_enc != SADB_EALG_NONE) {
ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
"mismated.\n", __func__));
error = EINVAL;
goto fail;
}
error = xform_init(sav, XF_AH);
break;
case SADB_SATYPE_ESP:
if ((sav->flags & (SADB_X_EXT_OLD | SADB_X_EXT_DERIV)) ==
(SADB_X_EXT_OLD | SADB_X_EXT_DERIV)) {
ipseclog((LOG_DEBUG, "%s: invalid flag (derived) "
"given to old-esp.\n", __func__));
error = EINVAL;
goto fail;
}
error = xform_init(sav, XF_ESP);
break;
case SADB_X_SATYPE_IPCOMP:
if (sav->alg_auth != SADB_AALG_NONE) {
ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
"mismated.\n", __func__));
error = EINVAL;
goto fail;
}
if ((sav->flags & SADB_X_EXT_RAWCPI) == 0 &&
ntohl(sav->spi) >= 0x10000) {
ipseclog((LOG_DEBUG, "%s: invalid cpi for IPComp.\n",
__func__));
error = EINVAL;
goto fail;
}
error = xform_init(sav, XF_IPCOMP);
break;
case SADB_X_SATYPE_TCPSIGNATURE:
if (sav->alg_enc != SADB_EALG_NONE) {
ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
"mismated.\n", __func__));
error = EINVAL;
goto fail;
}
error = xform_init(sav, XF_TCPSIGNATURE);
break;
default:
ipseclog((LOG_DEBUG, "%s: Invalid satype.\n", __func__));
error = EPROTONOSUPPORT;
goto fail;
}
if (error) {
ipseclog((LOG_DEBUG, "%s: unable to initialize SA type %u.\n",
__func__, mhp->msg->sadb_msg_satype));
goto fail;
}
error = key_setnatt(sav, mhp);
if (error != 0)
goto fail;
sav->firstused = 0;
sav->created = time_second;
error = key_updatelifetimes(sav, mhp);
if (error == 0)
return (0);
fail:
key_cleansav(sav);
return (error);
}
static struct mbuf *
key_setdumpsa(struct secasvar *sav, uint8_t type, uint8_t satype,
uint32_t seq, uint32_t pid, struct rm_priotracker *sahtree_trackerp)
{
struct seclifetime lft_c;
struct mbuf *result = NULL, *tres = NULL, *m;
int i, dumporder[] = {
SADB_EXT_SA, SADB_X_EXT_SA2, SADB_X_EXT_SA_REPLAY,
SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
SADB_EXT_LIFETIME_CURRENT, SADB_EXT_ADDRESS_SRC,
SADB_EXT_ADDRESS_DST, SADB_EXT_ADDRESS_PROXY,
SADB_EXT_KEY_AUTH, SADB_EXT_KEY_ENCRYPT,
SADB_EXT_IDENTITY_SRC, SADB_EXT_IDENTITY_DST,
SADB_EXT_SENSITIVITY,
SADB_X_EXT_NAT_T_TYPE,
SADB_X_EXT_NAT_T_SPORT, SADB_X_EXT_NAT_T_DPORT,
SADB_X_EXT_NAT_T_OAI, SADB_X_EXT_NAT_T_OAR,
SADB_X_EXT_NAT_T_FRAG,
#ifdef IPSEC_OFFLOAD
SADB_X_EXT_LFT_CUR_SW_OFFL, SADB_X_EXT_LFT_CUR_HW_OFFL,
SADB_X_EXT_IF_HW_OFFL,
#endif
};
uint32_t replay_count;
#ifdef IPSEC_OFFLOAD
int error;
#endif
SECASVAR_RLOCK_TRACKER;
m = key_setsadbmsg(type, 0, satype, seq, pid, sav->refcnt);
if (m == NULL)
goto fail;
result = m;
for (i = nitems(dumporder) - 1; i >= 0; i--) {
m = NULL;
switch (dumporder[i]) {
case SADB_EXT_SA:
m = key_setsadbsa(sav);
if (!m)
goto fail;
break;
case SADB_X_EXT_SA2: {
SECASVAR_RLOCK(sav);
replay_count = sav->replay ? sav->replay->count : 0;
SECASVAR_RUNLOCK(sav);
m = key_setsadbxsa2(sav->sah->saidx.mode, replay_count,
sav->sah->saidx.reqid);
if (!m)
goto fail;
break;
}
case SADB_X_EXT_SA_REPLAY:
if (sav->replay == NULL ||
sav->replay->wsize <= UINT8_MAX)
continue;
m = key_setsadbxsareplay(sav->replay->wsize);
if (!m)
goto fail;
break;
case SADB_EXT_ADDRESS_SRC:
m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
&sav->sah->saidx.src.sa,
FULLMASK, IPSEC_ULPROTO_ANY);
if (!m)
goto fail;
break;
case SADB_EXT_ADDRESS_DST:
m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
&sav->sah->saidx.dst.sa,
FULLMASK, IPSEC_ULPROTO_ANY);
if (!m)
goto fail;
break;
case SADB_EXT_KEY_AUTH:
if (!sav->key_auth)
continue;
m = key_setkey(sav->key_auth, SADB_EXT_KEY_AUTH);
if (!m)
goto fail;
break;
case SADB_EXT_KEY_ENCRYPT:
if (!sav->key_enc)
continue;
m = key_setkey(sav->key_enc, SADB_EXT_KEY_ENCRYPT);
if (!m)
goto fail;
break;
case SADB_EXT_LIFETIME_CURRENT:
lft_c.addtime = sav->created;
lft_c.allocations = (uint32_t)counter_u64_fetch(
sav->lft_c_allocations);
lft_c.bytes = counter_u64_fetch(sav->lft_c_bytes);
lft_c.usetime = sav->firstused;
m = key_setlifetime(&lft_c, SADB_EXT_LIFETIME_CURRENT);
if (!m)
goto fail;
break;
case SADB_EXT_LIFETIME_HARD:
if (!sav->lft_h)
continue;
m = key_setlifetime(sav->lft_h,
SADB_EXT_LIFETIME_HARD);
if (!m)
goto fail;
break;
case SADB_EXT_LIFETIME_SOFT:
if (!sav->lft_s)
continue;
m = key_setlifetime(sav->lft_s,
SADB_EXT_LIFETIME_SOFT);
if (!m)
goto fail;
break;
case SADB_X_EXT_NAT_T_TYPE:
if (sav->natt == NULL)
continue;
m = key_setsadbxtype(UDP_ENCAP_ESPINUDP);
if (!m)
goto fail;
break;
case SADB_X_EXT_NAT_T_DPORT:
if (sav->natt == NULL)
continue;
m = key_setsadbxport(sav->natt->dport,
SADB_X_EXT_NAT_T_DPORT);
if (!m)
goto fail;
break;
case SADB_X_EXT_NAT_T_SPORT:
if (sav->natt == NULL)
continue;
m = key_setsadbxport(sav->natt->sport,
SADB_X_EXT_NAT_T_SPORT);
if (!m)
goto fail;
break;
case SADB_X_EXT_NAT_T_OAI:
if (sav->natt == NULL ||
(sav->natt->flags & IPSEC_NATT_F_OAI) == 0)
continue;
m = key_setsadbaddr(SADB_X_EXT_NAT_T_OAI,
&sav->natt->oai.sa, FULLMASK, IPSEC_ULPROTO_ANY);
if (!m)
goto fail;
break;
case SADB_X_EXT_NAT_T_OAR:
if (sav->natt == NULL ||
(sav->natt->flags & IPSEC_NATT_F_OAR) == 0)
continue;
m = key_setsadbaddr(SADB_X_EXT_NAT_T_OAR,
&sav->natt->oar.sa, FULLMASK, IPSEC_ULPROTO_ANY);
if (!m)
goto fail;
break;
case SADB_X_EXT_NAT_T_FRAG:
continue;
#ifdef IPSEC_OFFLOAD
case SADB_X_EXT_LFT_CUR_SW_OFFL:
if (!ipsec_accel_is_accel_sav(sav))
continue;
SAV_ADDREF(sav);
error = ipsec_accel_sa_lifetime_op(sav, &lft_c,
NULL, IF_SA_CNT_TOTAL_SW_VAL, sahtree_trackerp);
if (error != 0) {
m = NULL;
goto fail;
}
m = key_setlifetime(&lft_c, dumporder[i]);
if (m == NULL)
goto fail;
key_freesav(&sav);
if (sav == NULL) {
m_freem(m);
goto fail;
}
break;
case SADB_X_EXT_LFT_CUR_HW_OFFL:
if (!ipsec_accel_is_accel_sav(sav))
continue;
memset(&lft_c, 0, sizeof(lft_c));
lft_c.bytes = sav->accel_hw_octets;
lft_c.allocations = sav->accel_hw_allocs;
m = key_setlifetime(&lft_c, dumporder[i]);
if (m == NULL)
goto fail;
break;
case SADB_X_EXT_IF_HW_OFFL:
if (!ipsec_accel_is_accel_sav(sav))
continue;
m = ipsec_accel_key_setaccelif(sav);
if (m == NULL)
continue;
break;
#endif
case SADB_EXT_ADDRESS_PROXY:
case SADB_EXT_IDENTITY_SRC:
case SADB_EXT_IDENTITY_DST:
case SADB_EXT_SENSITIVITY:
default:
continue;
}
if (!m)
goto fail;
if (tres)
m_cat(m, tres);
tres = m;
}
m_cat(result, tres);
tres = NULL;
if (result->m_len < sizeof(struct sadb_msg)) {
result = m_pullup(result, sizeof(struct sadb_msg));
if (result == NULL)
goto fail;
}
result->m_pkthdr.len = 0;
for (m = result; m; m = m->m_next)
result->m_pkthdr.len += m->m_len;
mtod(result, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(result->m_pkthdr.len);
return result;
fail:
m_freem(result);
m_freem(tres);
return NULL;
}
static struct mbuf *
key_setsadbmsg(u_int8_t type, u_int16_t tlen, u_int8_t satype, u_int32_t seq,
pid_t pid, u_int16_t reserved)
{
struct mbuf *m;
struct sadb_msg *p;
int len;
len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
if (len > MCLBYTES)
return NULL;
m = key_mget(len);
if (m == NULL)
return NULL;
m->m_pkthdr.len = m->m_len = len;
m->m_next = NULL;
p = mtod(m, struct sadb_msg *);
bzero(p, len);
p->sadb_msg_version = PF_KEY_V2;
p->sadb_msg_type = type;
p->sadb_msg_errno = 0;
p->sadb_msg_satype = satype;
p->sadb_msg_len = PFKEY_UNIT64(tlen);
p->sadb_msg_reserved = reserved;
p->sadb_msg_seq = seq;
p->sadb_msg_pid = (u_int32_t)pid;
return m;
}
static struct mbuf *
key_setsadbsa(struct secasvar *sav)
{
struct mbuf *m;
struct sadb_sa *p;
int len;
len = PFKEY_ALIGN8(sizeof(struct sadb_sa));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_sa *);
bzero(p, len);
p->sadb_sa_len = PFKEY_UNIT64(len);
p->sadb_sa_exttype = SADB_EXT_SA;
p->sadb_sa_spi = sav->spi;
p->sadb_sa_replay = sav->replay ?
(sav->replay->wsize > UINT8_MAX ? UINT8_MAX :
sav->replay->wsize): 0;
p->sadb_sa_state = sav->state;
p->sadb_sa_auth = sav->alg_auth;
p->sadb_sa_encrypt = sav->alg_enc;
p->sadb_sa_flags = sav->flags & SADB_KEY_FLAGS_MAX;
return (m);
}
static struct mbuf *
key_setsadbaddr(u_int16_t exttype, const struct sockaddr *saddr,
u_int8_t prefixlen, u_int16_t ul_proto)
{
struct mbuf *m;
struct sadb_address *p;
size_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_address)) +
PFKEY_ALIGN8(saddr->sa_len);
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_address *);
bzero(p, len);
p->sadb_address_len = PFKEY_UNIT64(len);
p->sadb_address_exttype = exttype;
p->sadb_address_proto = ul_proto;
if (prefixlen == FULLMASK) {
switch (saddr->sa_family) {
case AF_INET:
prefixlen = sizeof(struct in_addr) << 3;
break;
case AF_INET6:
prefixlen = sizeof(struct in6_addr) << 3;
break;
default:
;
}
}
p->sadb_address_prefixlen = prefixlen;
p->sadb_address_reserved = 0;
bcopy(saddr,
mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_address)),
saddr->sa_len);
return m;
}
static struct mbuf *
key_setsadbxsa2(u_int8_t mode, u_int32_t seq, u_int32_t reqid)
{
struct mbuf *m;
struct sadb_x_sa2 *p;
size_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_x_sa2 *);
bzero(p, len);
p->sadb_x_sa2_len = PFKEY_UNIT64(len);
p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
p->sadb_x_sa2_mode = mode;
p->sadb_x_sa2_reserved1 = 0;
p->sadb_x_sa2_reserved2 = 0;
p->sadb_x_sa2_sequence = seq;
p->sadb_x_sa2_reqid = reqid;
return m;
}
static struct mbuf *
key_setsadbxsareplay(u_int32_t replay)
{
struct mbuf *m;
struct sadb_x_sa_replay *p;
size_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa_replay));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_x_sa_replay *);
bzero(p, len);
p->sadb_x_sa_replay_len = PFKEY_UNIT64(len);
p->sadb_x_sa_replay_exttype = SADB_X_EXT_SA_REPLAY;
p->sadb_x_sa_replay_replay = (replay << 3);
return m;
}
static struct mbuf *
key_setsadbxtype(u_int16_t type)
{
struct mbuf *m;
size_t len;
struct sadb_x_nat_t_type *p;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_type));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_x_nat_t_type *);
bzero(p, len);
p->sadb_x_nat_t_type_len = PFKEY_UNIT64(len);
p->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
p->sadb_x_nat_t_type_type = type;
return (m);
}
static struct mbuf *
key_setsadbxport(u_int16_t port, u_int16_t type)
{
struct mbuf *m;
size_t len;
struct sadb_x_nat_t_port *p;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_port));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_x_nat_t_port *);
bzero(p, len);
p->sadb_x_nat_t_port_len = PFKEY_UNIT64(len);
p->sadb_x_nat_t_port_exttype = type;
p->sadb_x_nat_t_port_port = port;
return (m);
}
uint16_t
key_portfromsaddr(struct sockaddr *sa)
{
switch (sa->sa_family) {
#ifdef INET
case AF_INET:
return ((struct sockaddr_in *)sa)->sin_port;
#endif
#ifdef INET6
case AF_INET6:
return ((struct sockaddr_in6 *)sa)->sin6_port;
#endif
}
return (0);
}
void
key_porttosaddr(struct sockaddr *sa, uint16_t port)
{
switch (sa->sa_family) {
#ifdef INET
case AF_INET:
((struct sockaddr_in *)sa)->sin_port = port;
break;
#endif
#ifdef INET6
case AF_INET6:
((struct sockaddr_in6 *)sa)->sin6_port = port;
break;
#endif
default:
ipseclog((LOG_DEBUG, "%s: unexpected address family %d.\n",
__func__, sa->sa_family));
break;
}
}
static struct mbuf *
key_setsadbxpolicy(u_int16_t type, u_int8_t dir, u_int32_t id, u_int32_t priority)
{
struct mbuf *m;
struct sadb_x_policy *p;
size_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (NULL);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_x_policy *);
bzero(p, len);
p->sadb_x_policy_len = PFKEY_UNIT64(len);
p->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
p->sadb_x_policy_type = type;
p->sadb_x_policy_dir = dir;
p->sadb_x_policy_id = id;
p->sadb_x_policy_priority = priority;
return m;
}
struct seckey *
key_dup_keymsg(const struct sadb_key *src, struct malloc_type *type)
{
struct seckey *dst;
size_t len;
dst = malloc(sizeof(*dst), type, M_NOWAIT);
if (dst != NULL) {
len = src->sadb_key_bits >> 3;
dst->bits = src->sadb_key_bits;
dst->key_data = malloc(len, type, M_NOWAIT);
if (dst->key_data != NULL) {
bcopy((const char *)(src + 1), dst->key_data, len);
} else {
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
free(dst, type);
dst = NULL;
}
} else {
ipseclog((LOG_DEBUG, "%s: No more memory.\n",
__func__));
}
return (dst);
}
static struct seclifetime *
key_dup_lifemsg(const struct sadb_lifetime *src, struct malloc_type *type)
{
struct seclifetime *dst;
dst = malloc(sizeof(*dst), type, M_NOWAIT);
if (dst == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return (NULL);
}
dst->allocations = src->sadb_lifetime_allocations;
dst->bytes = src->sadb_lifetime_bytes;
dst->addtime = src->sadb_lifetime_addtime;
dst->usetime = src->sadb_lifetime_usetime;
return (dst);
}
static int
key_cmpsaidx(const struct secasindex *saidx0, const struct secasindex *saidx1,
int flag)
{
if (saidx0 == NULL && saidx1 == NULL)
return 1;
if (saidx0 == NULL || saidx1 == NULL)
return 0;
if (saidx0->proto != saidx1->proto)
return 0;
if (flag == CMP_EXACTLY) {
if (saidx0->mode != saidx1->mode)
return 0;
if (saidx0->reqid != saidx1->reqid)
return 0;
if (bcmp(&saidx0->src, &saidx1->src,
saidx0->src.sa.sa_len) != 0 ||
bcmp(&saidx0->dst, &saidx1->dst,
saidx0->dst.sa.sa_len) != 0)
return 0;
} else {
if (flag == CMP_MODE_REQID || flag == CMP_REQID) {
if (saidx1->reqid != 0 &&
saidx0->reqid != saidx1->reqid)
return 0;
}
if (flag == CMP_MODE_REQID) {
if (saidx0->mode != IPSEC_MODE_ANY
&& saidx0->mode != saidx1->mode)
return 0;
}
if (key_sockaddrcmp(&saidx0->src.sa, &saidx1->src.sa, 0) != 0)
return 0;
if (key_sockaddrcmp(&saidx0->dst.sa, &saidx1->dst.sa, 0) != 0)
return 0;
}
return 1;
}
static int
key_cmpspidx_exactly(struct secpolicyindex *spidx0,
struct secpolicyindex *spidx1)
{
if (spidx0 == NULL && spidx1 == NULL)
return 1;
if (spidx0 == NULL || spidx1 == NULL)
return 0;
if (spidx0->prefs != spidx1->prefs
|| spidx0->prefd != spidx1->prefd
|| spidx0->ul_proto != spidx1->ul_proto
|| spidx0->dir != spidx1->dir)
return 0;
return key_sockaddrcmp(&spidx0->src.sa, &spidx1->src.sa, 1) == 0 &&
key_sockaddrcmp(&spidx0->dst.sa, &spidx1->dst.sa, 1) == 0;
}
static int
key_cmpspidx_withmask(struct secpolicyindex *spidx0,
struct secpolicyindex *spidx1)
{
if (spidx0 == NULL && spidx1 == NULL)
return 1;
if (spidx0 == NULL || spidx1 == NULL)
return 0;
if (spidx0->src.sa.sa_family != spidx1->src.sa.sa_family ||
spidx0->dst.sa.sa_family != spidx1->dst.sa.sa_family ||
spidx0->src.sa.sa_len != spidx1->src.sa.sa_len ||
spidx0->dst.sa.sa_len != spidx1->dst.sa.sa_len)
return 0;
if (spidx0->ul_proto != (u_int16_t)IPSEC_ULPROTO_ANY
&& spidx0->ul_proto != spidx1->ul_proto)
return 0;
switch (spidx0->src.sa.sa_family) {
case AF_INET:
if (spidx0->src.sin.sin_port != IPSEC_PORT_ANY
&& spidx0->src.sin.sin_port != spidx1->src.sin.sin_port)
return 0;
if (!key_bbcmp(&spidx0->src.sin.sin_addr,
&spidx1->src.sin.sin_addr, spidx0->prefs))
return 0;
break;
case AF_INET6:
if (spidx0->src.sin6.sin6_port != IPSEC_PORT_ANY
&& spidx0->src.sin6.sin6_port != spidx1->src.sin6.sin6_port)
return 0;
if (spidx0->src.sin6.sin6_scope_id &&
spidx1->src.sin6.sin6_scope_id &&
spidx0->src.sin6.sin6_scope_id != spidx1->src.sin6.sin6_scope_id)
return 0;
if (!key_bbcmp(&spidx0->src.sin6.sin6_addr,
&spidx1->src.sin6.sin6_addr, spidx0->prefs))
return 0;
break;
default:
if (bcmp(&spidx0->src, &spidx1->src, spidx0->src.sa.sa_len) != 0)
return 0;
break;
}
switch (spidx0->dst.sa.sa_family) {
case AF_INET:
if (spidx0->dst.sin.sin_port != IPSEC_PORT_ANY
&& spidx0->dst.sin.sin_port != spidx1->dst.sin.sin_port)
return 0;
if (!key_bbcmp(&spidx0->dst.sin.sin_addr,
&spidx1->dst.sin.sin_addr, spidx0->prefd))
return 0;
break;
case AF_INET6:
if (spidx0->dst.sin6.sin6_port != IPSEC_PORT_ANY
&& spidx0->dst.sin6.sin6_port != spidx1->dst.sin6.sin6_port)
return 0;
if (spidx0->dst.sin6.sin6_scope_id &&
spidx1->dst.sin6.sin6_scope_id &&
spidx0->dst.sin6.sin6_scope_id != spidx1->dst.sin6.sin6_scope_id)
return 0;
if (!key_bbcmp(&spidx0->dst.sin6.sin6_addr,
&spidx1->dst.sin6.sin6_addr, spidx0->prefd))
return 0;
break;
default:
if (bcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.sa.sa_len) != 0)
return 0;
break;
}
return 1;
}
#ifdef satosin
#undef satosin
#endif
#define satosin(s) ((const struct sockaddr_in *)s)
#ifdef satosin6
#undef satosin6
#endif
#define satosin6(s) ((const struct sockaddr_in6 *)s)
int
key_sockaddrcmp(const struct sockaddr *sa1, const struct sockaddr *sa2,
int port)
{
if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
return 1;
switch (sa1->sa_family) {
#ifdef INET
case AF_INET:
if (sa1->sa_len != sizeof(struct sockaddr_in))
return 1;
if (satosin(sa1)->sin_addr.s_addr !=
satosin(sa2)->sin_addr.s_addr) {
return 1;
}
if (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port)
return 1;
break;
#endif
#ifdef INET6
case AF_INET6:
if (sa1->sa_len != sizeof(struct sockaddr_in6))
return 1;
if (satosin6(sa1)->sin6_scope_id !=
satosin6(sa2)->sin6_scope_id) {
return 1;
}
if (!IN6_ARE_ADDR_EQUAL(&satosin6(sa1)->sin6_addr,
&satosin6(sa2)->sin6_addr)) {
return 1;
}
if (port &&
satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) {
return 1;
}
break;
#endif
default:
if (bcmp(sa1, sa2, sa1->sa_len) != 0)
return 1;
break;
}
return 0;
}
int
key_sockaddrcmp_withmask(const struct sockaddr *sa1,
const struct sockaddr *sa2, size_t mask)
{
if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
return (1);
switch (sa1->sa_family) {
#ifdef INET
case AF_INET:
return (!key_bbcmp(&satosin(sa1)->sin_addr,
&satosin(sa2)->sin_addr, mask));
#endif
#ifdef INET6
case AF_INET6:
if (satosin6(sa1)->sin6_scope_id !=
satosin6(sa2)->sin6_scope_id)
return (1);
return (!key_bbcmp(&satosin6(sa1)->sin6_addr,
&satosin6(sa2)->sin6_addr, mask));
#endif
}
return (1);
}
#undef satosin
#undef satosin6
static int
key_bbcmp(const void *a1, const void *a2, u_int bits)
{
const unsigned char *p1 = a1;
const unsigned char *p2 = a2;
if (p1 == NULL || p2 == NULL)
return (p1 == p2);
while (bits >= 8) {
if (*p1++ != *p2++)
return 0;
bits -= 8;
}
if (bits > 0) {
u_int8_t mask = ~((1<<(8-bits))-1);
if ((*p1 & mask) != (*p2 & mask))
return 0;
}
return 1;
}
static void
key_flush_spd(time_t now)
{
SPTREE_RLOCK_TRACKER;
struct secpolicy_list drainq;
struct secpolicy *sp, *nextsp;
u_int dir;
LIST_INIT(&drainq);
SPTREE_RLOCK();
for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
TAILQ_FOREACH(sp, &V_sptree[dir], chain) {
if (sp->lifetime == 0 && sp->validtime == 0)
continue;
if ((sp->lifetime &&
now - sp->created > sp->lifetime) ||
(sp->validtime &&
now - sp->lastused > sp->validtime)) {
SP_ADDREF(sp);
LIST_INSERT_HEAD(&drainq, sp, drainq);
}
}
}
SPTREE_RUNLOCK();
if (LIST_EMPTY(&drainq))
return;
SPTREE_WLOCK();
sp = LIST_FIRST(&drainq);
while (sp != NULL) {
nextsp = LIST_NEXT(sp, drainq);
if (sp->state != IPSEC_SPSTATE_ALIVE) {
LIST_REMOVE(sp, drainq);
key_freesp(&sp);
sp = nextsp;
continue;
}
TAILQ_REMOVE(&V_sptree[sp->spidx.dir], sp, chain);
V_spd_size--;
LIST_REMOVE(sp, idhash);
sp->state = IPSEC_SPSTATE_DEAD;
ipsec_accel_spddel(sp);
sp = nextsp;
}
V_sp_genid++;
SPTREE_WUNLOCK();
if (SPDCACHE_ENABLED())
spdcache_clear();
sp = LIST_FIRST(&drainq);
while (sp != NULL) {
nextsp = LIST_NEXT(sp, drainq);
key_spdexpire(sp);
key_freesp(&sp);
key_freesp(&sp);
sp = nextsp;
}
}
static void
key_flush_sad(time_t now)
{
SAHTREE_RLOCK_TRACKER;
struct secashead_list emptyq;
struct secasvar_list drainq, hexpireq, sexpireq, freeq;
struct secashead *sah, *nextsah;
struct secasvar *sav, *nextsav;
SECASVAR_RLOCK_TRACKER;
LIST_INIT(&drainq);
LIST_INIT(&hexpireq);
LIST_INIT(&sexpireq);
LIST_INIT(&emptyq);
SAHTREE_RLOCK();
TAILQ_FOREACH(sah, &V_sahtree, chain) {
if (TAILQ_EMPTY(&sah->savtree_larval) &&
TAILQ_EMPTY(&sah->savtree_alive)) {
SAH_ADDREF(sah);
LIST_INSERT_HEAD(&emptyq, sah, drainq);
continue;
}
TAILQ_FOREACH(sav, &sah->savtree_larval, chain) {
if (now - sav->created < V_key_larval_lifetime)
continue;
SAV_ADDREF(sav);
LIST_INSERT_HEAD(&drainq, sav, drainq);
}
TAILQ_FOREACH(sav, &sah->savtree_alive, chain) {
if (sav->lft_h == NULL)
continue;
SECASVAR_RLOCK(sav);
if (sav->lft_h == NULL) {
SECASVAR_RUNLOCK(sav);
continue;
}
if ((sav->lft_h->addtime != 0 &&
now - sav->created > sav->lft_h->addtime) ||
(sav->lft_h->usetime != 0 && sav->firstused &&
now - sav->firstused > sav->lft_h->usetime) ||
(sav->lft_h->bytes != 0 && counter_u64_fetch(
sav->lft_c_bytes) > sav->lft_h->bytes)) {
SECASVAR_RUNLOCK(sav);
SAV_ADDREF(sav);
LIST_INSERT_HEAD(&hexpireq, sav, drainq);
continue;
}
if (sav->state == SADB_SASTATE_MATURE && (
(sav->lft_s->addtime != 0 &&
now - sav->created > sav->lft_s->addtime) ||
(sav->lft_s->usetime != 0 && sav->firstused &&
now - sav->firstused > sav->lft_s->usetime) ||
(sav->lft_s->bytes != 0 && counter_u64_fetch(
sav->lft_c_bytes) > sav->lft_s->bytes) ||
(!(sav->flags & SADB_X_SAFLAGS_ESN) &&
(sav->replay != NULL) && (
(sav->replay->count > UINT32_80PCT) ||
(sav->replay->last > UINT32_80PCT))))) {
SECASVAR_RUNLOCK(sav);
SAV_ADDREF(sav);
LIST_INSERT_HEAD(&sexpireq, sav, drainq);
continue;
}
SECASVAR_RUNLOCK(sav);
}
}
SAHTREE_RUNLOCK();
if (LIST_EMPTY(&emptyq) && LIST_EMPTY(&drainq) &&
LIST_EMPTY(&hexpireq) && LIST_EMPTY(&sexpireq))
return;
LIST_INIT(&freeq);
SAHTREE_WLOCK();
sav = LIST_FIRST(&drainq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
if (sav->state != SADB_SASTATE_LARVAL) {
LIST_REMOVE(sav, drainq);
LIST_INSERT_HEAD(&freeq, sav, drainq);
sav = nextsav;
continue;
}
TAILQ_REMOVE(&sav->sah->savtree_larval, sav, chain);
LIST_REMOVE(sav, spihash);
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
sav = nextsav;
}
sav = LIST_FIRST(&hexpireq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
if (sav->state == SADB_SASTATE_DEAD) {
LIST_REMOVE(sav, drainq);
LIST_INSERT_HEAD(&freeq, sav, drainq);
sav = nextsav;
continue;
}
TAILQ_REMOVE(&sav->sah->savtree_alive, sav, chain);
LIST_REMOVE(sav, spihash);
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
sav = nextsav;
}
sav = LIST_FIRST(&sexpireq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
if (sav->state == SADB_SASTATE_DEAD) {
LIST_REMOVE(sav, drainq);
LIST_INSERT_HEAD(&freeq, sav, drainq);
sav = nextsav;
continue;
}
sav->state = SADB_SASTATE_DYING;
sav = nextsav;
}
sah = LIST_FIRST(&emptyq);
while (sah != NULL) {
nextsah = LIST_NEXT(sah, drainq);
if (sah->state == SADB_SASTATE_DEAD ||
!TAILQ_EMPTY(&sah->savtree_larval) ||
!TAILQ_EMPTY(&sah->savtree_alive)) {
LIST_REMOVE(sah, drainq);
key_freesah(&sah);
sah = nextsah;
continue;
}
TAILQ_REMOVE(&V_sahtree, sah, chain);
LIST_REMOVE(sah, addrhash);
sah->state = SADB_SASTATE_DEAD;
sah = nextsah;
}
SAHTREE_WUNLOCK();
sav = LIST_FIRST(&hexpireq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
key_expire(sav, 1);
key_freesah(&sav->sah);
key_freesav(&sav);
key_freesav(&sav);
sav = nextsav;
}
sav = LIST_FIRST(&sexpireq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
key_expire(sav, 0);
key_freesav(&sav);
sav = nextsav;
}
sav = LIST_FIRST(&drainq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
key_freesah(&sav->sah);
key_freesav(&sav);
key_freesav(&sav);
sav = nextsav;
}
sav = LIST_FIRST(&freeq);
while (sav != NULL) {
nextsav = LIST_NEXT(sav, drainq);
key_freesav(&sav);
sav = nextsav;
}
sah = LIST_FIRST(&emptyq);
while (sah != NULL) {
nextsah = LIST_NEXT(sah, drainq);
key_freesah(&sah);
key_freesah(&sah);
sah = nextsah;
}
}
static void
key_flush_acq(time_t now)
{
struct secacq *acq, *nextacq;
ACQ_LOCK();
acq = LIST_FIRST(&V_acqtree);
while (acq != NULL) {
nextacq = LIST_NEXT(acq, chain);
if (now - acq->created > V_key_blockacq_lifetime) {
LIST_REMOVE(acq, chain);
LIST_REMOVE(acq, addrhash);
LIST_REMOVE(acq, seqhash);
free(acq, M_IPSEC_SAQ);
}
acq = nextacq;
}
ACQ_UNLOCK();
}
static void
key_flush_spacq(time_t now)
{
struct secspacq *acq, *nextacq;
SPACQ_LOCK();
for (acq = LIST_FIRST(&V_spacqtree); acq != NULL; acq = nextacq) {
nextacq = LIST_NEXT(acq, chain);
if (now - acq->created > V_key_blockacq_lifetime
&& __LIST_CHAINED(acq)) {
LIST_REMOVE(acq, chain);
free(acq, M_IPSEC_SAQ);
}
}
SPACQ_UNLOCK();
}
static void
key_timehandler(void *arg)
{
VNET_ITERATOR_DECL(vnet_iter);
time_t now = time_second;
VNET_LIST_RLOCK_NOSLEEP();
VNET_FOREACH(vnet_iter) {
CURVNET_SET(vnet_iter);
key_flush_spd(now);
key_flush_sad(now);
key_flush_acq(now);
key_flush_spacq(now);
CURVNET_RESTORE();
}
VNET_LIST_RUNLOCK_NOSLEEP();
#ifndef IPSEC_DEBUG2
callout_schedule(&key_timer, hz);
#endif
}
u_long
key_random(void)
{
u_long value;
arc4random_buf(&value, sizeof(value));
return value;
}
static uint8_t
key_satype2proto(uint8_t satype)
{
switch (satype) {
case SADB_SATYPE_UNSPEC:
return IPSEC_PROTO_ANY;
case SADB_SATYPE_AH:
return IPPROTO_AH;
case SADB_SATYPE_ESP:
return IPPROTO_ESP;
case SADB_X_SATYPE_IPCOMP:
return IPPROTO_IPCOMP;
case SADB_X_SATYPE_TCPSIGNATURE:
return IPPROTO_TCP;
default:
return 0;
}
}
static uint8_t
key_proto2satype(uint8_t proto)
{
switch (proto) {
case IPPROTO_AH:
return SADB_SATYPE_AH;
case IPPROTO_ESP:
return SADB_SATYPE_ESP;
case IPPROTO_IPCOMP:
return SADB_X_SATYPE_IPCOMP;
case IPPROTO_TCP:
return SADB_X_SATYPE_TCPSIGNATURE;
default:
return 0;
}
}
static int
key_getspi(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secasindex saidx;
struct sadb_address *src0, *dst0;
struct secasvar *sav;
uint32_t reqid, spi;
int error;
uint8_t mode, proto;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST)
#ifdef PFKEY_STRICT_CHECKS
|| SADB_CHECKHDR(mhp, SADB_EXT_SPIRANGE)
#endif
) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
error = EINVAL;
goto fail;
}
if (SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST)
#ifdef PFKEY_STRICT_CHECKS
|| SADB_CHECKLEN(mhp, SADB_EXT_SPIRANGE)
#endif
) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
error = EINVAL;
goto fail;
}
if (SADB_CHECKHDR(mhp, SADB_X_EXT_SA2)) {
mode = IPSEC_MODE_ANY;
reqid = 0;
} else {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_SA2)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
error = EINVAL;
goto fail;
}
mode = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
reqid = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
}
src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
error = EINVAL;
goto fail;
}
error = key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1));
if (error != 0) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
error = EINVAL;
goto fail;
}
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
SPI_ALLOC_LOCK();
spi = key_do_getnewspi(
(struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE], &saidx);
if (spi == 0) {
SPI_ALLOC_UNLOCK();
error = EEXIST;
goto fail;
}
sav = key_newsav(mhp, &saidx, spi, &error);
SPI_ALLOC_UNLOCK();
if (sav == NULL)
goto fail;
if (sav->seq != 0) {
key_acqdone(&saidx, sav->seq);
}
KEYDBG(KEY_STAMP,
printf("%s: SA(%p)\n", __func__, sav));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
{
struct mbuf *n, *nn;
struct sadb_sa *m_sa;
struct sadb_msg *newmsg;
int off, len;
len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
PFKEY_ALIGN8(sizeof(struct sadb_sa));
n = key_mget(len);
if (n == NULL) {
error = ENOBUFS;
goto fail;
}
n->m_len = len;
n->m_next = NULL;
off = 0;
m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
m_sa = (struct sadb_sa *)(mtod(n, caddr_t) + off);
m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
m_sa->sadb_sa_exttype = SADB_EXT_SA;
m_sa->sadb_sa_spi = spi;
off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
IPSEC_ASSERT(off == len,
("length inconsistency (off %u len %u)", off, len));
n->m_next = key_gather_mbuf(m, mhp, 0, 2, SADB_EXT_ADDRESS_SRC,
SADB_EXT_ADDRESS_DST);
if (!n->m_next) {
m_freem(n);
error = ENOBUFS;
goto fail;
}
if (n->m_len < sizeof(struct sadb_msg)) {
n = m_pullup(n, sizeof(struct sadb_msg));
if (n == NULL)
return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
}
n->m_pkthdr.len = 0;
for (nn = n; nn; nn = nn->m_next)
n->m_pkthdr.len += nn->m_len;
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_seq = sav->seq;
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
fail:
return (key_senderror(so, m, error));
}
static uint32_t
key_do_getnewspi(struct sadb_spirange *spirange, struct secasindex *saidx)
{
uint32_t min, max, newspi, t;
int tries, limit;
SPI_ALLOC_LOCK_ASSERT();
if (spirange != NULL) {
min = spirange->sadb_spirange_min;
max = spirange->sadb_spirange_max;
} else {
min = V_key_spi_minval;
max = V_key_spi_maxval;
}
if (saidx->proto == IPPROTO_IPCOMP) {
if (min >= 0x10000)
min = 0xffff;
if (max >= 0x10000)
max = 0xffff;
if (min > max) {
t = min; min = max; max = t;
}
}
if (min == max) {
if (key_checkspidup(htonl(min))) {
ipseclog((LOG_DEBUG, "%s: SPI %u exists already.\n",
__func__, min));
return 0;
}
tries = 1;
newspi = min;
} else {
newspi = 0;
limit = atomic_load_int(&V_key_spi_trycnt);
for (tries = 0; tries < limit; tries++) {
newspi = min + (key_random() % (max - min + 1));
if (!key_checkspidup(htonl(newspi)))
break;
}
if (tries == limit || newspi == 0) {
ipseclog((LOG_DEBUG,
"%s: failed to allocate SPI.\n", __func__));
return 0;
}
}
keystat.getspi_count =
(keystat.getspi_count + tries) / 2;
return (htonl(newspi));
}
static struct secasvar *
key_getsav_tcpmd5(struct secasindex *saidx, uint32_t *spi)
{
SAHTREE_RLOCK_TRACKER;
struct secashead *sah;
struct secasvar *sav;
IPSEC_ASSERT(saidx->proto == IPPROTO_TCP, ("wrong proto"));
SAHTREE_RLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(saidx), addrhash) {
if (sah->saidx.proto != IPPROTO_TCP)
continue;
if (!key_sockaddrcmp(&saidx->dst.sa, &sah->saidx.dst.sa, 0) &&
!key_sockaddrcmp(&saidx->src.sa, &sah->saidx.src.sa, 0))
break;
}
if (sah != NULL) {
if (V_key_preferred_oldsa)
sav = TAILQ_LAST(&sah->savtree_alive, secasvar_queue);
else
sav = TAILQ_FIRST(&sah->savtree_alive);
if (sav != NULL) {
SAV_ADDREF(sav);
SAHTREE_RUNLOCK();
return (sav);
}
}
if (spi == NULL) {
SAHTREE_RUNLOCK();
return (NULL);
}
LIST_FOREACH(sav, SAVHASH_HASH(*spi), spihash) {
if (sav->spi == *spi)
break;
}
if (sav == NULL) {
SAHTREE_RUNLOCK();
return (NULL);
}
SAHTREE_RUNLOCK();
*spi = key_do_getnewspi(NULL, saidx);
return (NULL);
}
static int
key_updateaddresses(struct socket *so, struct mbuf *m,
const struct sadb_msghdr *mhp, struct secasvar *sav,
struct secasindex *saidx)
{
struct sockaddr *newaddr;
struct secashead *sah;
struct secasvar *newsav, *tmp;
struct mbuf *n;
int error, isnew;
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NEW_ADDRESS_SRC)) {
newaddr = (struct sockaddr *)(
((struct sadb_address *)
mhp->ext[SADB_X_EXT_NEW_ADDRESS_SRC]) + 1);
bcopy(newaddr, &saidx->src, newaddr->sa_len);
key_porttosaddr(&saidx->src.sa, 0);
}
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NEW_ADDRESS_DST)) {
newaddr = (struct sockaddr *)(
((struct sadb_address *)
mhp->ext[SADB_X_EXT_NEW_ADDRESS_DST]) + 1);
bcopy(newaddr, &saidx->dst, newaddr->sa_len);
key_porttosaddr(&saidx->dst.sa, 0);
}
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NEW_ADDRESS_SRC) ||
!SADB_CHECKHDR(mhp, SADB_X_EXT_NEW_ADDRESS_DST)) {
error = key_checksockaddrs(&saidx->src.sa, &saidx->dst.sa);
if (error != 0) {
ipseclog((LOG_DEBUG, "%s: invalid new sockaddr.\n",
__func__));
return (error);
}
sah = key_getsah(saidx);
if (sah == NULL) {
sah = key_newsah(saidx);
if (sah == NULL) {
ipseclog((LOG_DEBUG,
"%s: No more memory.\n", __func__));
return (ENOBUFS);
}
isnew = 2;
} else
isnew = 1;
} else {
if (sav->sah->saidx.proto != IPPROTO_ESP ||
SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_TYPE) ||
SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_SPORT) ||
SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_DPORT)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return (EINVAL);
}
sah = sav->sah;
isnew = 0;
}
newsav = malloc(sizeof(struct secasvar), M_IPSEC_SA,
M_NOWAIT | M_ZERO);
if (newsav == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
error = ENOBUFS;
goto fail;
}
SAV_INITREF(newsav);
bcopy(sav, newsav, offsetof(struct secasvar, chain));
#ifdef IPSEC_OFFLOAD
CK_LIST_INIT(&newsav->accel_ifps);
newsav->accel_forget_tq = 0;
newsav->accel_lft_sw = uma_zalloc_pcpu(ipsec_key_lft_zone,
M_NOWAIT | M_ZERO);
if (newsav->accel_lft_sw == NULL) {
error = ENOBUFS;
goto fail;
}
if (sav->accel_ifname != NULL) {
struct sadb_x_if_hw_offl xof;
newsav->accel_ifname = malloc(sizeof(xof.sadb_x_if_hw_offl_if),
M_IPSEC_MISC, M_NOWAIT);
if (newsav->accel_ifname == NULL) {
error = ENOBUFS;
goto fail;
}
strncpy(__DECONST(char *, sav->accel_ifname),
newsav->accel_ifname,
sizeof(xof.sadb_x_if_hw_offl_if));
}
#endif
newsav->natt = NULL;
newsav->sah = sah;
newsav->state = SADB_SASTATE_MATURE;
error = key_setnatt(newsav, mhp);
if (error != 0)
goto fail;
SAHTREE_WLOCK();
if (sav->state == SADB_SASTATE_DEAD) {
SAHTREE_WUNLOCK();
error = ESRCH;
goto fail;
}
IPSEC_ASSERT((sav->flags & SADB_X_EXT_F_CLONED) == 0,
("SA is already cloned"));
IPSEC_ASSERT(sav->state == SADB_SASTATE_MATURE ||
sav->state == SADB_SASTATE_DYING,
("Wrong SA state %u\n", sav->state));
TAILQ_REMOVE(&sav->sah->savtree_alive, sav, chain);
LIST_REMOVE(sav, spihash);
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
TAILQ_FOREACH(tmp, &sah->savtree_alive, chain) {
if (newsav->created > tmp->created) {
TAILQ_INSERT_BEFORE(tmp, newsav, chain);
break;
}
}
if (tmp == NULL)
TAILQ_INSERT_TAIL(&sah->savtree_alive, newsav, chain);
LIST_INSERT_HEAD(SAVHASH_HASH(newsav->spi), newsav, spihash);
if (isnew == 2) {
TAILQ_INSERT_HEAD(&V_sahtree, sah, chain);
LIST_INSERT_HEAD(SAHADDRHASH_HASH(saidx), sah, addrhash);
sah->state = SADB_SASTATE_MATURE;
SAH_ADDREF(sah);
}
SECASVAR_WLOCK(sav);
newsav->cntr = sav->cntr;
sav->flags |= SADB_X_EXT_F_CLONED;
SECASVAR_WUNLOCK(sav);
SAHTREE_WUNLOCK();
KEYDBG(KEY_STAMP,
printf("%s: SA(%p) cloned into SA(%p)\n",
__func__, sav, newsav));
KEYDBG(KEY_DATA, kdebug_secasv(newsav));
key_freesav(&sav);
n = key_getmsgbuf_x1(m, mhp);
if (n == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return (ENOBUFS);
}
m_freem(m);
key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
return (0);
fail:
if (isnew != 0)
key_freesah(&sah);
if (newsav != NULL) {
#ifdef IPSEC_OFFLOAD
uma_zfree_pcpu(ipsec_key_lft_zone, newsav->accel_lft_sw);
free(__DECONST(char *, newsav->accel_ifname), M_IPSEC_MISC);
#endif
if (newsav->natt != NULL)
free(newsav->natt, M_IPSEC_MISC);
free(newsav, M_IPSEC_SA);
}
return (error);
}
static int
key_update(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secasindex saidx;
struct sadb_address *src0, *dst0;
struct sadb_sa *sa0;
struct secasvar *sav;
uint32_t reqid;
int error;
uint8_t mode, proto;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_EXT_SA) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST) ||
(SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD) &&
!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT)) ||
(SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT) &&
!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD))) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_SA) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_X_EXT_SA2)) {
mode = IPSEC_MODE_ANY;
reqid = 0;
} else {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_SA2)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
mode = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
reqid = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
}
sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
if (sa0->sadb_sa_state != SADB_SASTATE_MATURE) {
ipseclog((LOG_DEBUG, "%s: invalid state.\n", __func__));
#ifdef PFKEY_STRICT_CHECKS
return key_senderror(so, m, EINVAL);
#endif
}
error = key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1));
if (error != 0) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return key_senderror(so, m, error);
}
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
sav = key_getsavbyspi(sa0->sadb_sa_spi);
if (sav == NULL) {
ipseclog((LOG_DEBUG, "%s: no SA found for SPI %u\n",
__func__, ntohl(sa0->sadb_sa_spi)));
return key_senderror(so, m, EINVAL);
}
if (sav->pid != mhp->msg->sadb_msg_pid) {
ipseclog((LOG_DEBUG,
"%s: pid mismatched (SPI %u, pid %u vs. %u)\n", __func__,
ntohl(sav->spi), sav->pid, mhp->msg->sadb_msg_pid));
key_freesav(&sav);
return key_senderror(so, m, EINVAL);
}
if (key_cmpsaidx(&sav->sah->saidx, &saidx, CMP_MODE_REQID) == 0) {
ipseclog((LOG_DEBUG, "%s: saidx mismatched for SPI %u\n",
__func__, ntohl(sav->spi)));
key_freesav(&sav);
return key_senderror(so, m, ESRCH);
}
if (sav->state == SADB_SASTATE_LARVAL) {
if ((mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
SADB_CHECKHDR(mhp, SADB_EXT_KEY_ENCRYPT)) ||
(mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
SADB_CHECKHDR(mhp, SADB_EXT_KEY_AUTH))) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
key_freesav(&sav);
return key_senderror(so, m, EINVAL);
}
error = key_setsaval(sav, mhp);
if (error != 0) {
key_freesav(&sav);
return (key_senderror(so, m, error));
}
SAHTREE_WLOCK();
if (sav->state != SADB_SASTATE_LARVAL) {
SAHTREE_WUNLOCK();
key_freesav(&sav);
return (key_senderror(so, m, ESRCH));
}
TAILQ_REMOVE(&sav->sah->savtree_larval, sav, chain);
TAILQ_INSERT_HEAD(&sav->sah->savtree_alive, sav, chain);
sav->state = SADB_SASTATE_MATURE;
SAHTREE_WUNLOCK();
} else {
if (!SADB_CHECKHDR(mhp, SADB_EXT_KEY_ENCRYPT) ||
!SADB_CHECKHDR(mhp, SADB_EXT_KEY_AUTH)) {
key_freesav(&sav);
return (key_senderror(so, m, EINVAL));
}
error = key_updatelifetimes(sav, mhp);
if (error != 0) {
key_freesav(&sav);
return (key_senderror(so, m, error));
}
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NEW_ADDRESS_SRC) ||
!SADB_CHECKHDR(mhp, SADB_X_EXT_NEW_ADDRESS_DST) ||
!SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_TYPE) ||
sav->natt != NULL) {
error = key_updateaddresses(so, m, mhp, sav, &saidx);
key_freesav(&sav);
if (error != 0)
return (key_senderror(so, m, error));
return (0);
}
SAHTREE_WLOCK();
if (sav->state == SADB_SASTATE_DEAD) {
SAHTREE_WUNLOCK();
key_freesav(&sav);
return (key_senderror(so, m, ESRCH));
}
sav->state = SADB_SASTATE_MATURE;
SAHTREE_WUNLOCK();
}
KEYDBG(KEY_STAMP,
printf("%s: SA(%p)\n", __func__, sav));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
ipsec_accel_sa_newkey(sav);
key_freesav(&sav);
{
struct mbuf *n;
n = key_getmsgbuf_x1(m, mhp);
if (n == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return key_senderror(so, m, ENOBUFS);
}
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
static int
key_add(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secasindex saidx;
struct sadb_address *src0, *dst0;
struct sadb_sa *sa0;
struct secasvar *sav;
uint32_t reqid, spi;
uint8_t mode, proto;
int error;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_EXT_SA) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST) ||
(mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP && (
SADB_CHECKHDR(mhp, SADB_EXT_KEY_ENCRYPT) ||
SADB_CHECKLEN(mhp, SADB_EXT_KEY_ENCRYPT))) ||
(mhp->msg->sadb_msg_satype == SADB_SATYPE_AH && (
SADB_CHECKHDR(mhp, SADB_EXT_KEY_AUTH) ||
SADB_CHECKLEN(mhp, SADB_EXT_KEY_AUTH))) ||
(SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD) &&
!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT)) ||
(SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_SOFT) &&
!SADB_CHECKHDR(mhp, SADB_EXT_LIFETIME_HARD))) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_SA) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_X_EXT_SA2)) {
mode = IPSEC_MODE_ANY;
reqid = 0;
} else {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_SA2)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
mode = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
reqid = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
}
sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
if (sa0->sadb_sa_state != SADB_SASTATE_MATURE) {
ipseclog((LOG_DEBUG, "%s: invalid state.\n", __func__));
#ifdef PFKEY_STRICT_CHECKS
return key_senderror(so, m, EINVAL);
#endif
}
error = key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1));
if (error != 0) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return key_senderror(so, m, error);
}
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
spi = sa0->sadb_sa_spi;
SPI_ALLOC_LOCK();
if (proto == IPPROTO_TCP) {
sav = key_getsav_tcpmd5(&saidx, &spi);
if (sav == NULL && spi == 0) {
SPI_ALLOC_UNLOCK();
ipseclog((LOG_DEBUG, "%s: SA already exists.\n",
__func__));
return key_senderror(so, m, EEXIST);
}
} else {
sav = key_getsavbyspi(spi);
}
if (sav != NULL) {
SPI_ALLOC_UNLOCK();
key_freesav(&sav);
ipseclog((LOG_DEBUG, "%s: SA already exists.\n", __func__));
return key_senderror(so, m, EEXIST);
}
sav = key_newsav(mhp, &saidx, spi, &error);
SPI_ALLOC_UNLOCK();
if (sav == NULL)
return key_senderror(so, m, error);
KEYDBG(KEY_STAMP,
printf("%s: return SA(%p)\n", __func__, sav));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
ipsec_accel_sa_newkey(sav);
if (sav->seq != 0)
key_acqdone(&saidx, sav->seq);
{
struct mbuf *n;
n = key_getmsgbuf_x1(m, mhp);
if (n == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return key_senderror(so, m, ENOBUFS);
}
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
static int
key_setnatt(struct secasvar *sav, const struct sadb_msghdr *mhp)
{
struct sadb_x_nat_t_port *port;
struct sadb_x_nat_t_type *type;
struct sadb_address *oai, *oar;
struct sockaddr *sa;
uint32_t addr;
uint16_t cksum;
int i;
IPSEC_ASSERT(sav->natt == NULL, ("natt is already initialized"));
if (sav->sah->saidx.proto != IPPROTO_ESP)
return (0);
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_TYPE) &&
!SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_SPORT) &&
!SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_DPORT)) {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_NAT_T_TYPE) ||
SADB_CHECKLEN(mhp, SADB_X_EXT_NAT_T_SPORT) ||
SADB_CHECKLEN(mhp, SADB_X_EXT_NAT_T_DPORT)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return (EINVAL);
}
} else
return (0);
type = (struct sadb_x_nat_t_type *)mhp->ext[SADB_X_EXT_NAT_T_TYPE];
if (type->sadb_x_nat_t_type_type != UDP_ENCAP_ESPINUDP) {
ipseclog((LOG_DEBUG, "%s: unsupported NAT-T type %u.\n",
__func__, type->sadb_x_nat_t_type_type));
return (EINVAL);
}
sav->natt = malloc(sizeof(struct secnatt), M_IPSEC_MISC,
M_NOWAIT | M_ZERO);
if (sav->natt == NULL) {
PFKEYSTAT_INC(in_nomem);
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return (ENOBUFS);
}
port = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_SPORT];
if (port->sadb_x_nat_t_port_port == 0) {
ipseclog((LOG_DEBUG, "%s: invalid NAT-T sport specified.\n",
__func__));
return (EINVAL);
}
sav->natt->sport = port->sadb_x_nat_t_port_port;
port = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_DPORT];
if (port->sadb_x_nat_t_port_port == 0) {
ipseclog((LOG_DEBUG, "%s: invalid NAT-T dport specified.\n",
__func__));
return (EINVAL);
}
sav->natt->dport = port->sadb_x_nat_t_port_port;
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_OAI)) {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_NAT_T_OAI)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return (EINVAL);
}
oai = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
} else
oai = NULL;
if (!SADB_CHECKHDR(mhp, SADB_X_EXT_NAT_T_OAR)) {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_NAT_T_OAR)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return (EINVAL);
}
oar = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
} else
oar = NULL;
if (sav->sah->saidx.mode != IPSEC_MODE_TUNNEL) {
cksum = 0;
if (oai != NULL) {
sa = (struct sockaddr *)(oai + 1);
switch (sa->sa_family) {
#ifdef AF_INET
case AF_INET:
if (sa->sa_len != sizeof(struct sockaddr_in)) {
ipseclog((LOG_DEBUG,
"%s: wrong NAT-OAi header.\n",
__func__));
return (EINVAL);
}
if (((struct sockaddr_in *)sa)->sin_addr.s_addr !=
sav->sah->saidx.src.sin.sin_addr.s_addr) {
bcopy(sa, &sav->natt->oai.sa, sa->sa_len);
sav->natt->flags |= IPSEC_NATT_F_OAI;
addr = sav->sah->saidx.src.sin.sin_addr.s_addr;
cksum = in_addword(cksum, ~addr >> 16);
cksum = in_addword(cksum, ~addr & 0xffff);
addr = sav->natt->oai.sin.sin_addr.s_addr;
cksum = in_addword(cksum, addr >> 16);
cksum = in_addword(cksum, addr & 0xffff);
}
break;
#endif
#ifdef AF_INET6
case AF_INET6:
if (sa->sa_len != sizeof(struct sockaddr_in6)) {
ipseclog((LOG_DEBUG,
"%s: wrong NAT-OAi header.\n",
__func__));
return (EINVAL);
}
if (memcmp(&((struct sockaddr_in6 *)sa)->sin6_addr.s6_addr,
&sav->sah->saidx.src.sin6.sin6_addr.s6_addr,
sizeof(struct in6_addr)) != 0) {
bcopy(sa, &sav->natt->oai.sa, sa->sa_len);
sav->natt->flags |= IPSEC_NATT_F_OAI;
for (i = 0; i < 8; i++) {
cksum = in_addword(cksum,
~sav->sah->saidx.src.sin6.sin6_addr.s6_addr16[i]);
cksum = in_addword(cksum,
sav->natt->oai.sin6.sin6_addr.s6_addr16[i]);
}
}
break;
#endif
default:
ipseclog((LOG_DEBUG,
"%s: wrong NAT-OAi header.\n",
__func__));
return (EINVAL);
}
}
if (oar != NULL) {
sa = (struct sockaddr *)(oar + 1);
switch (sa->sa_family) {
#ifdef AF_INET
case AF_INET:
if (sa->sa_len != sizeof(struct sockaddr_in)) {
ipseclog((LOG_DEBUG,
"%s: wrong NAT-OAr header.\n",
__func__));
return (EINVAL);
}
if (((struct sockaddr_in *)sa)->sin_addr.s_addr !=
sav->sah->saidx.dst.sin.sin_addr.s_addr) {
bcopy(sa, &sav->natt->oar.sa, sa->sa_len);
sav->natt->flags |= IPSEC_NATT_F_OAR;
addr = sav->sah->saidx.dst.sin.sin_addr.s_addr;
cksum = in_addword(cksum, ~addr >> 16);
cksum = in_addword(cksum, ~addr & 0xffff);
addr = sav->natt->oar.sin.sin_addr.s_addr;
cksum = in_addword(cksum, addr >> 16);
cksum = in_addword(cksum, addr & 0xffff);
}
break;
#endif
#ifdef AF_INET6
case AF_INET6:
if (sa->sa_len != sizeof(struct sockaddr_in6)) {
ipseclog((LOG_DEBUG,
"%s: wrong NAT-OAr header.\n",
__func__));
return (EINVAL);
}
if (memcmp(&((struct sockaddr_in6 *)sa)->sin6_addr.s6_addr,
&sav->sah->saidx.dst.sin6.sin6_addr.s6_addr, 16) != 0) {
bcopy(sa, &sav->natt->oar.sa, sa->sa_len);
sav->natt->flags |= IPSEC_NATT_F_OAR;
for (i = 0; i < 8; i++) {
cksum = in_addword(cksum,
~sav->sah->saidx.dst.sin6.sin6_addr.s6_addr16[i]);
cksum = in_addword(cksum,
sav->natt->oar.sin6.sin6_addr.s6_addr16[i]);
}
}
break;
#endif
default:
ipseclog((LOG_DEBUG,
"%s: wrong NAT-OAr header.\n",
__func__));
return (EINVAL);
}
}
sav->natt->cksum = cksum;
}
return (0);
}
static int
key_setident(struct secashead *sah, const struct sadb_msghdr *mhp)
{
const struct sadb_ident *idsrc, *iddst;
IPSEC_ASSERT(sah != NULL, ("null secashead"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (SADB_CHECKHDR(mhp, SADB_EXT_IDENTITY_SRC) &&
SADB_CHECKHDR(mhp, SADB_EXT_IDENTITY_DST)) {
sah->idents = NULL;
sah->identd = NULL;
return (0);
}
if (SADB_CHECKHDR(mhp, SADB_EXT_IDENTITY_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_IDENTITY_DST)) {
ipseclog((LOG_DEBUG, "%s: invalid identity.\n", __func__));
return (EINVAL);
}
idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC];
iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST];
if (idsrc->sadb_ident_type != iddst->sadb_ident_type) {
ipseclog((LOG_DEBUG, "%s: ident type mismatch.\n", __func__));
return EINVAL;
}
switch (idsrc->sadb_ident_type) {
case SADB_IDENTTYPE_PREFIX:
case SADB_IDENTTYPE_FQDN:
case SADB_IDENTTYPE_USERFQDN:
default:
sah->idents = NULL;
sah->identd = NULL;
return 0;
}
sah->idents = malloc(sizeof(struct secident), M_IPSEC_MISC, M_NOWAIT);
if (sah->idents == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return ENOBUFS;
}
sah->identd = malloc(sizeof(struct secident), M_IPSEC_MISC, M_NOWAIT);
if (sah->identd == NULL) {
free(sah->idents, M_IPSEC_MISC);
sah->idents = NULL;
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return ENOBUFS;
}
sah->idents->type = idsrc->sadb_ident_type;
sah->idents->id = idsrc->sadb_ident_id;
sah->identd->type = iddst->sadb_ident_type;
sah->identd->id = iddst->sadb_ident_id;
return 0;
}
static struct mbuf *
key_getmsgbuf_x1(struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct mbuf *n;
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
n = key_gather_mbuf(m, mhp, 1, 16, SADB_EXT_RESERVED,
SADB_EXT_SA, SADB_X_EXT_SA2,
SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
SADB_EXT_IDENTITY_SRC, SADB_EXT_IDENTITY_DST,
SADB_X_EXT_NAT_T_TYPE, SADB_X_EXT_NAT_T_SPORT,
SADB_X_EXT_NAT_T_DPORT, SADB_X_EXT_NAT_T_OAI,
SADB_X_EXT_NAT_T_OAR, SADB_X_EXT_NEW_ADDRESS_SRC,
SADB_X_EXT_NEW_ADDRESS_DST);
if (!n)
return NULL;
if (n->m_len < sizeof(struct sadb_msg)) {
n = m_pullup(n, sizeof(struct sadb_msg));
if (n == NULL)
return NULL;
}
mtod(n, struct sadb_msg *)->sadb_msg_errno = 0;
mtod(n, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(n->m_pkthdr.len);
return n;
}
static int
key_delete(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secasindex saidx;
struct sadb_address *src0, *dst0;
struct secasvar *sav;
struct sadb_sa *sa0;
uint8_t proto;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST)) {
ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
if (key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1)) != 0) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return (key_senderror(so, m, EINVAL));
}
KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
if (SADB_CHECKHDR(mhp, SADB_EXT_SA)) {
ipseclog((LOG_DEBUG, "%s: doing delete all.\n", __func__));
return (key_delete_all(so, m, mhp, &saidx));
}
if (SADB_CHECKLEN(mhp, SADB_EXT_SA)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return (key_senderror(so, m, EINVAL));
}
sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
SPI_ALLOC_LOCK();
if (proto == IPPROTO_TCP)
sav = key_getsav_tcpmd5(&saidx, NULL);
else
sav = key_getsavbyspi(sa0->sadb_sa_spi);
SPI_ALLOC_UNLOCK();
if (sav == NULL) {
ipseclog((LOG_DEBUG, "%s: no SA found for SPI %u.\n",
__func__, ntohl(sa0->sadb_sa_spi)));
return (key_senderror(so, m, ESRCH));
}
if (key_cmpsaidx(&sav->sah->saidx, &saidx, CMP_HEAD) == 0) {
ipseclog((LOG_DEBUG, "%s: saidx mismatched for SPI %u.\n",
__func__, ntohl(sav->spi)));
key_freesav(&sav);
return (key_senderror(so, m, ESRCH));
}
KEYDBG(KEY_STAMP,
printf("%s: SA(%p)\n", __func__, sav));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
key_unlinksav(sav);
key_freesav(&sav);
{
struct mbuf *n;
struct sadb_msg *newmsg;
n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
SADB_EXT_SA, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
if (!n)
return key_senderror(so, m, ENOBUFS);
if (n->m_len < sizeof(struct sadb_msg)) {
n = m_pullup(n, sizeof(struct sadb_msg));
if (n == NULL)
return key_senderror(so, m, ENOBUFS);
}
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
static int
key_delete_all(struct socket *so, struct mbuf *m,
const struct sadb_msghdr *mhp, struct secasindex *saidx)
{
struct secasvar_queue drainq;
struct secashead *sah;
struct secasvar *sav, *nextsav;
TAILQ_INIT(&drainq);
SAHTREE_WLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(saidx), addrhash) {
if (key_cmpsaidx(&sah->saidx, saidx, CMP_HEAD) == 0)
continue;
TAILQ_CONCAT(&drainq, &sah->savtree_alive, chain);
}
TAILQ_FOREACH(sav, &drainq, chain) {
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
LIST_REMOVE(sav, spihash);
}
SAHTREE_WUNLOCK();
sav = TAILQ_FIRST(&drainq);
while (sav != NULL) {
KEYDBG(KEY_STAMP,
printf("%s: SA(%p)\n", __func__, sav));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
nextsav = TAILQ_NEXT(sav, chain);
key_freesah(&sav->sah);
key_freesav(&sav);
sav = nextsav;
}
{
struct mbuf *n;
struct sadb_msg *newmsg;
n = key_gather_mbuf(m, mhp, 1, 3, SADB_EXT_RESERVED,
SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
if (!n)
return key_senderror(so, m, ENOBUFS);
if (n->m_len < sizeof(struct sadb_msg)) {
n = m_pullup(n, sizeof(struct sadb_msg));
if (n == NULL)
return key_senderror(so, m, ENOBUFS);
}
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
}
}
void
key_delete_xform(const struct xformsw *xsp)
{
struct secasvar_queue drainq;
struct secashead *sah;
struct secasvar *sav, *nextsav;
TAILQ_INIT(&drainq);
SAHTREE_WLOCK();
TAILQ_FOREACH(sah, &V_sahtree, chain) {
sav = TAILQ_FIRST(&sah->savtree_alive);
if (sav == NULL)
continue;
if (sav->tdb_xform != xsp)
continue;
TAILQ_CONCAT(&drainq, &sah->savtree_alive, chain);
}
TAILQ_FOREACH(sav, &drainq, chain) {
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
LIST_REMOVE(sav, spihash);
}
SAHTREE_WUNLOCK();
sav = TAILQ_FIRST(&drainq);
while (sav != NULL) {
KEYDBG(KEY_STAMP,
printf("%s: SA(%p)\n", __func__, sav));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
nextsav = TAILQ_NEXT(sav, chain);
key_freesah(&sav->sah);
key_freesav(&sav);
sav = nextsav;
}
}
static int
key_get(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secasindex saidx;
struct sadb_address *src0, *dst0;
struct sadb_sa *sa0;
struct secasvar *sav;
uint8_t proto;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_EXT_SA) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_SA) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return key_senderror(so, m, EINVAL);
}
sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
if (key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1)) != 0) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return key_senderror(so, m, EINVAL);
}
KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
SPI_ALLOC_LOCK();
if (proto == IPPROTO_TCP)
sav = key_getsav_tcpmd5(&saidx, NULL);
else
sav = key_getsavbyspi(sa0->sadb_sa_spi);
SPI_ALLOC_UNLOCK();
if (sav == NULL) {
ipseclog((LOG_DEBUG, "%s: no SA found.\n", __func__));
return key_senderror(so, m, ESRCH);
}
if (key_cmpsaidx(&sav->sah->saidx, &saidx, CMP_HEAD) == 0) {
ipseclog((LOG_DEBUG, "%s: saidx mismatched for SPI %u.\n",
__func__, ntohl(sa0->sadb_sa_spi)));
key_freesav(&sav);
return (key_senderror(so, m, ESRCH));
}
{
struct mbuf *n;
uint8_t satype;
if ((satype = key_proto2satype(sav->sah->saidx.proto)) == 0) {
ipseclog((LOG_DEBUG, "%s: there was invalid proto in SAD.\n",
__func__));
key_freesav(&sav);
return key_senderror(so, m, EINVAL);
}
n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
mhp->msg->sadb_msg_pid, NULL);
key_freesav(&sav);
if (!n)
return key_senderror(so, m, ENOBUFS);
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
}
static void
key_getcomb_setlifetime(struct sadb_comb *comb)
{
comb->sadb_comb_soft_allocations = 1;
comb->sadb_comb_hard_allocations = 1;
comb->sadb_comb_soft_bytes = 0;
comb->sadb_comb_hard_bytes = 0;
comb->sadb_comb_hard_addtime = 86400;
comb->sadb_comb_soft_addtime = comb->sadb_comb_soft_addtime * 80 / 100;
comb->sadb_comb_soft_usetime = 28800;
comb->sadb_comb_hard_usetime = comb->sadb_comb_hard_usetime * 80 / 100;
}
static struct mbuf *
key_getcomb_ealg(void)
{
struct sadb_comb *comb;
const struct enc_xform *algo;
struct mbuf *result = NULL, *m, *n;
int encmin;
int i, off, o;
int totlen;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
m = NULL;
for (i = 1; i <= SADB_EALG_MAX; i++) {
algo = enc_algorithm_lookup(i);
if (algo == NULL)
continue;
if (_BITS(algo->maxkey) < V_ipsec_esp_keymin)
continue;
if (_BITS(algo->minkey) < V_ipsec_esp_keymin)
encmin = V_ipsec_esp_keymin;
else
encmin = _BITS(algo->minkey);
if (V_ipsec_esp_auth)
m = key_getcomb_ah();
else {
IPSEC_ASSERT(l <= MLEN,
("l=%u > MLEN=%lu", l, (u_long) MLEN));
MGET(m, M_NOWAIT, MT_DATA);
if (m) {
M_ALIGN(m, l);
m->m_len = l;
m->m_next = NULL;
bzero(mtod(m, caddr_t), m->m_len);
}
}
if (!m)
goto fail;
totlen = 0;
for (n = m; n; n = n->m_next)
totlen += n->m_len;
IPSEC_ASSERT((totlen % l) == 0, ("totlen=%u, l=%u", totlen, l));
for (off = 0; off < totlen; off += l) {
n = m_pulldown(m, off, l, &o);
if (!n) {
goto fail;
}
comb = (struct sadb_comb *)(mtod(n, caddr_t) + o);
bzero(comb, sizeof(*comb));
key_getcomb_setlifetime(comb);
comb->sadb_comb_encrypt = i;
comb->sadb_comb_encrypt_minbits = encmin;
comb->sadb_comb_encrypt_maxbits = _BITS(algo->maxkey);
}
if (!result)
result = m;
else
m_cat(result, m);
}
return result;
fail:
if (result)
m_freem(result);
return NULL;
}
static void
key_getsizes_ah(const struct auth_hash *ah, int alg, u_int16_t* min,
u_int16_t* max)
{
*min = *max = ah->hashsize;
if (ah->keysize == 0) {
switch (alg) {
case SADB_X_AALG_NULL: *min = 1; *max = 256; break;
case SADB_X_AALG_SHA2_256: *min = *max = 32; break;
case SADB_X_AALG_SHA2_384: *min = *max = 48; break;
case SADB_X_AALG_SHA2_512: *min = *max = 64; break;
default:
DPRINTF(("%s: unknown AH algorithm %u\n",
__func__, alg));
break;
}
}
}
static struct mbuf *
key_getcomb_ah(void)
{
const struct auth_hash *algo;
struct sadb_comb *comb;
struct mbuf *m;
u_int16_t minkeysize, maxkeysize;
int i;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
m = NULL;
for (i = 1; i <= SADB_AALG_MAX; i++) {
#if 1
if (i != SADB_AALG_SHA1HMAC &&
i != SADB_X_AALG_SHA2_256 &&
i != SADB_X_AALG_SHA2_384 &&
i != SADB_X_AALG_SHA2_512)
continue;
#endif
algo = auth_algorithm_lookup(i);
if (!algo)
continue;
key_getsizes_ah(algo, i, &minkeysize, &maxkeysize);
if (_BITS(minkeysize) < V_ipsec_ah_keymin)
continue;
if (!m) {
IPSEC_ASSERT(l <= MLEN,
("l=%u > MLEN=%lu", l, (u_long) MLEN));
MGET(m, M_NOWAIT, MT_DATA);
if (m) {
M_ALIGN(m, l);
m->m_len = l;
m->m_next = NULL;
}
} else
M_PREPEND(m, l, M_NOWAIT);
if (!m)
return NULL;
comb = mtod(m, struct sadb_comb *);
bzero(comb, sizeof(*comb));
key_getcomb_setlifetime(comb);
comb->sadb_comb_auth = i;
comb->sadb_comb_auth_minbits = _BITS(minkeysize);
comb->sadb_comb_auth_maxbits = _BITS(maxkeysize);
}
return m;
}
static struct mbuf *
key_getcomb_ipcomp(void)
{
const struct comp_algo *algo;
struct sadb_comb *comb;
struct mbuf *m;
int i;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
m = NULL;
for (i = 1; i <= SADB_X_CALG_MAX; i++) {
algo = comp_algorithm_lookup(i);
if (!algo)
continue;
if (!m) {
IPSEC_ASSERT(l <= MLEN,
("l=%u > MLEN=%lu", l, (u_long) MLEN));
MGET(m, M_NOWAIT, MT_DATA);
if (m) {
M_ALIGN(m, l);
m->m_len = l;
m->m_next = NULL;
}
} else
M_PREPEND(m, l, M_NOWAIT);
if (!m)
return NULL;
comb = mtod(m, struct sadb_comb *);
bzero(comb, sizeof(*comb));
key_getcomb_setlifetime(comb);
comb->sadb_comb_encrypt = i;
}
return m;
}
static struct mbuf *
key_getprop(const struct secasindex *saidx)
{
struct sadb_prop *prop;
struct mbuf *m, *n;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_prop));
int totlen;
switch (saidx->proto) {
case IPPROTO_ESP:
m = key_getcomb_ealg();
break;
case IPPROTO_AH:
m = key_getcomb_ah();
break;
case IPPROTO_IPCOMP:
m = key_getcomb_ipcomp();
break;
default:
return NULL;
}
if (!m)
return NULL;
M_PREPEND(m, l, M_NOWAIT);
if (!m)
return NULL;
totlen = 0;
for (n = m; n; n = n->m_next)
totlen += n->m_len;
prop = mtod(m, struct sadb_prop *);
bzero(prop, sizeof(*prop));
prop->sadb_prop_len = PFKEY_UNIT64(totlen);
prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
prop->sadb_prop_replay = 32;
return m;
}
static int
key_acquire(const struct secasindex *saidx, struct secpolicy *sp)
{
union sockaddr_union addr;
struct mbuf *result, *m;
uint32_t seq;
int error;
uint16_t ul_proto;
uint8_t mask, satype;
IPSEC_ASSERT(saidx != NULL, ("null saidx"));
satype = key_proto2satype(saidx->proto);
IPSEC_ASSERT(satype != 0, ("null satype, protocol %u", saidx->proto));
error = -1;
result = NULL;
ul_proto = IPSEC_ULPROTO_ANY;
seq = key_getacq(saidx, &error);
if (seq == 0)
return (error);
m = key_setsadbmsg(SADB_ACQUIRE, 0, satype, seq, 0, 0);
if (!m) {
error = ENOBUFS;
goto fail;
}
result = m;
if (sp != NULL && (sp->spidx.ul_proto == IPPROTO_TCP ||
sp->spidx.ul_proto == IPPROTO_UDP))
ul_proto = sp->spidx.ul_proto;
addr = saidx->src;
mask = FULLMASK;
if (ul_proto != IPSEC_ULPROTO_ANY) {
switch (sp->spidx.src.sa.sa_family) {
case AF_INET:
if (sp->spidx.src.sin.sin_port != IPSEC_PORT_ANY) {
addr.sin.sin_port = sp->spidx.src.sin.sin_port;
mask = sp->spidx.prefs;
}
break;
case AF_INET6:
if (sp->spidx.src.sin6.sin6_port != IPSEC_PORT_ANY) {
addr.sin6.sin6_port =
sp->spidx.src.sin6.sin6_port;
mask = sp->spidx.prefs;
}
break;
default:
break;
}
}
m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC, &addr.sa, mask, ul_proto);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
addr = saidx->dst;
mask = FULLMASK;
if (ul_proto != IPSEC_ULPROTO_ANY) {
switch (sp->spidx.dst.sa.sa_family) {
case AF_INET:
if (sp->spidx.dst.sin.sin_port != IPSEC_PORT_ANY) {
addr.sin.sin_port = sp->spidx.dst.sin.sin_port;
mask = sp->spidx.prefd;
}
break;
case AF_INET6:
if (sp->spidx.dst.sin6.sin6_port != IPSEC_PORT_ANY) {
addr.sin6.sin6_port =
sp->spidx.dst.sin6.sin6_port;
mask = sp->spidx.prefd;
}
break;
default:
break;
}
}
m = key_setsadbaddr(SADB_EXT_ADDRESS_DST, &addr.sa, mask, ul_proto);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
if (sp != NULL) {
m = key_setsadbxpolicy(sp->policy, sp->spidx.dir, sp->id,
sp->priority);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
}
if (saidx->reqid != 0) {
m = key_setsadbxsa2(saidx->mode, 0, saidx->reqid);
if (m == NULL) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
}
#if 0
if (idexttype && fqdn) {
struct sadb_ident *id;
int fqdnlen;
fqdnlen = strlen(fqdn) + 1;
id = (struct sadb_ident *)p;
bzero(id, sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
id->sadb_ident_exttype = idexttype;
id->sadb_ident_type = SADB_IDENTTYPE_FQDN;
bcopy(fqdn, id + 1, fqdnlen);
p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(fqdnlen);
}
if (idexttype) {
struct sadb_ident *id;
int userfqdnlen;
if (userfqdn) {
userfqdnlen = strlen(userfqdn) + 1;
} else
userfqdnlen = 0;
id = (struct sadb_ident *)p;
bzero(id, sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
id->sadb_ident_exttype = idexttype;
id->sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
if (curproc && curproc->p_cred)
id->sadb_ident_id = curproc->p_cred->p_ruid;
if (userfqdn && userfqdnlen)
bcopy(userfqdn, id + 1, userfqdnlen);
p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen);
}
#endif
m = key_getprop(saidx);
#if 0
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
#else
if (m)
m_cat(result, m);
#endif
if ((result->m_flags & M_PKTHDR) == 0) {
error = EINVAL;
goto fail;
}
if (result->m_len < sizeof(struct sadb_msg)) {
result = m_pullup(result, sizeof(struct sadb_msg));
if (result == NULL) {
error = ENOBUFS;
goto fail;
}
}
result->m_pkthdr.len = 0;
for (m = result; m; m = m->m_next)
result->m_pkthdr.len += m->m_len;
mtod(result, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(result->m_pkthdr.len);
KEYDBG(KEY_STAMP,
printf("%s: SP(%p)\n", __func__, sp));
KEYDBG(KEY_DATA, kdebug_secasindex(saidx, NULL));
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
fail:
if (result)
m_freem(result);
return error;
}
static uint32_t
key_newacq(const struct secasindex *saidx, int *perror)
{
struct secacq *acq;
uint32_t seq;
acq = malloc(sizeof(*acq), M_IPSEC_SAQ, M_NOWAIT | M_ZERO);
if (acq == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
*perror = ENOBUFS;
return (0);
}
bcopy(saidx, &acq->saidx, sizeof(acq->saidx));
acq->created = time_second;
acq->count = 0;
ACQ_LOCK();
seq = acq->seq = (V_acq_seq == ~0 ? 1 : ++V_acq_seq);
LIST_INSERT_HEAD(&V_acqtree, acq, chain);
LIST_INSERT_HEAD(ACQADDRHASH_HASH(saidx), acq, addrhash);
LIST_INSERT_HEAD(ACQSEQHASH_HASH(seq), acq, seqhash);
ACQ_UNLOCK();
*perror = 0;
return (seq);
}
static uint32_t
key_getacq(const struct secasindex *saidx, int *perror)
{
struct secacq *acq;
uint32_t seq;
ACQ_LOCK();
LIST_FOREACH(acq, ACQADDRHASH_HASH(saidx), addrhash) {
if (key_cmpsaidx(&acq->saidx, saidx, CMP_EXACTLY)) {
if (acq->count > V_key_blockacq_count) {
acq->created = time_second;
acq->count = 0;
seq = acq->seq;
} else {
acq->count++;
seq = 0;
}
break;
}
}
ACQ_UNLOCK();
if (acq != NULL) {
*perror = 0;
return (seq);
}
return (key_newacq(saidx, perror));
}
static int
key_acqreset(uint32_t seq)
{
struct secacq *acq;
ACQ_LOCK();
LIST_FOREACH(acq, ACQSEQHASH_HASH(seq), seqhash) {
if (acq->seq == seq) {
acq->count = 0;
acq->created = time_second;
break;
}
}
ACQ_UNLOCK();
if (acq == NULL)
return (ESRCH);
return (0);
}
static int
key_acqdone(const struct secasindex *saidx, uint32_t seq)
{
struct secacq *acq;
ACQ_LOCK();
LIST_FOREACH(acq, ACQSEQHASH_HASH(seq), seqhash) {
if (acq->seq == seq)
break;
}
if (acq != NULL) {
if (key_cmpsaidx(&acq->saidx, saidx, CMP_EXACTLY) == 0) {
ipseclog((LOG_DEBUG,
"%s: Mismatched saidx for ACQ %u\n", __func__, seq));
acq = NULL;
} else {
acq->created = 0;
}
} else {
ipseclog((LOG_DEBUG,
"%s: ACQ %u is not found.\n", __func__, seq));
}
ACQ_UNLOCK();
if (acq == NULL)
return (ESRCH);
return (0);
}
static struct secspacq *
key_newspacq(struct secpolicyindex *spidx)
{
struct secspacq *acq;
acq = malloc(sizeof(struct secspacq), M_IPSEC_SAQ, M_NOWAIT|M_ZERO);
if (acq == NULL) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return NULL;
}
bcopy(spidx, &acq->spidx, sizeof(acq->spidx));
acq->created = time_second;
acq->count = 0;
SPACQ_LOCK();
LIST_INSERT_HEAD(&V_spacqtree, acq, chain);
SPACQ_UNLOCK();
return acq;
}
static struct secspacq *
key_getspacq(struct secpolicyindex *spidx)
{
struct secspacq *acq;
SPACQ_LOCK();
LIST_FOREACH(acq, &V_spacqtree, chain) {
if (key_cmpspidx_exactly(spidx, &acq->spidx)) {
return acq;
}
}
SPACQ_UNLOCK();
return NULL;
}
static int
key_acquire2(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
SAHTREE_RLOCK_TRACKER;
struct sadb_address *src0, *dst0;
struct secasindex saidx;
struct secashead *sah;
uint32_t reqid;
int error;
uint8_t mode, proto;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (mhp->msg->sadb_msg_len == PFKEY_UNIT64(sizeof(struct sadb_msg))) {
if (mhp->msg->sadb_msg_seq == 0 ||
mhp->msg->sadb_msg_errno == 0) {
ipseclog((LOG_DEBUG, "%s: must specify sequence "
"number and errno.\n", __func__));
} else {
key_acqreset(mhp->msg->sadb_msg_seq);
}
m_freem(m);
return (0);
}
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKHDR(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKHDR(mhp, SADB_EXT_PROPOSAL)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: missing required header.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_SRC) ||
SADB_CHECKLEN(mhp, SADB_EXT_ADDRESS_DST) ||
SADB_CHECKLEN(mhp, SADB_EXT_PROPOSAL)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n", __func__));
return key_senderror(so, m, EINVAL);
}
if (SADB_CHECKHDR(mhp, SADB_X_EXT_SA2)) {
mode = IPSEC_MODE_ANY;
reqid = 0;
} else {
if (SADB_CHECKLEN(mhp, SADB_X_EXT_SA2)) {
ipseclog((LOG_DEBUG,
"%s: invalid message: wrong header size.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
mode = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
reqid = ((struct sadb_x_sa2 *)
mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
}
src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
error = key_checksockaddrs((struct sockaddr *)(src0 + 1),
(struct sockaddr *)(dst0 + 1));
if (error != 0) {
ipseclog((LOG_DEBUG, "%s: invalid sockaddr.\n", __func__));
return key_senderror(so, m, EINVAL);
}
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
SAHTREE_RLOCK();
LIST_FOREACH(sah, SAHADDRHASH_HASH(&saidx), addrhash) {
if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE_REQID))
break;
}
SAHTREE_RUNLOCK();
if (sah != NULL) {
ipseclog((LOG_DEBUG, "%s: a SA exists already.\n", __func__));
return key_senderror(so, m, EEXIST);
}
error = key_acquire(&saidx, NULL);
if (error != 0) {
ipseclog((LOG_DEBUG,
"%s: error %d returned from key_acquire()\n",
__func__, error));
return key_senderror(so, m, error);
}
m_freem(m);
return (0);
}
static int
key_register(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secreg *reg, *newreg = NULL;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if (mhp->msg->sadb_msg_satype >= sizeof(V_regtree)/sizeof(V_regtree[0]))
return key_senderror(so, m, EINVAL);
if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC)
goto setmsg;
REGTREE_LOCK();
LIST_FOREACH(reg, &V_regtree[mhp->msg->sadb_msg_satype], chain) {
if (reg->so == so) {
REGTREE_UNLOCK();
ipseclog((LOG_DEBUG, "%s: socket exists already.\n",
__func__));
return key_senderror(so, m, EEXIST);
}
}
newreg = malloc(sizeof(struct secreg), M_IPSEC_SAR, M_NOWAIT|M_ZERO);
if (newreg == NULL) {
REGTREE_UNLOCK();
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return key_senderror(so, m, ENOBUFS);
}
newreg->so = so;
((struct keycb *)(so->so_pcb))->kp_registered++;
LIST_INSERT_HEAD(&V_regtree[mhp->msg->sadb_msg_satype], newreg, chain);
REGTREE_UNLOCK();
setmsg:
{
struct mbuf *n;
struct sadb_msg *newmsg;
struct sadb_supported *sup;
u_int len, alen, elen;
int off;
int i;
struct sadb_alg *alg;
alen = 0;
for (i = 1; i <= SADB_AALG_MAX; i++) {
if (auth_algorithm_lookup(i))
alen += sizeof(struct sadb_alg);
}
if (alen)
alen += sizeof(struct sadb_supported);
elen = 0;
for (i = 1; i <= SADB_EALG_MAX; i++) {
if (enc_algorithm_lookup(i))
elen += sizeof(struct sadb_alg);
}
if (elen)
elen += sizeof(struct sadb_supported);
len = sizeof(struct sadb_msg) + alen + elen;
if (len > MCLBYTES)
return key_senderror(so, m, ENOBUFS);
n = key_mget(len);
if (n == NULL)
return key_senderror(so, m, ENOBUFS);
n->m_pkthdr.len = n->m_len = len;
n->m_next = NULL;
off = 0;
m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
newmsg = mtod(n, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(len);
off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
if (alen) {
sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
sup->sadb_supported_len = PFKEY_UNIT64(alen);
sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
off += PFKEY_ALIGN8(sizeof(*sup));
for (i = 1; i <= SADB_AALG_MAX; i++) {
const struct auth_hash *aalgo;
u_int16_t minkeysize, maxkeysize;
aalgo = auth_algorithm_lookup(i);
if (!aalgo)
continue;
alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
alg->sadb_alg_id = i;
alg->sadb_alg_ivlen = 0;
key_getsizes_ah(aalgo, i, &minkeysize, &maxkeysize);
alg->sadb_alg_minbits = _BITS(minkeysize);
alg->sadb_alg_maxbits = _BITS(maxkeysize);
off += PFKEY_ALIGN8(sizeof(*alg));
}
}
if (elen) {
sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
sup->sadb_supported_len = PFKEY_UNIT64(elen);
sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
off += PFKEY_ALIGN8(sizeof(*sup));
for (i = 1; i <= SADB_EALG_MAX; i++) {
const struct enc_xform *ealgo;
ealgo = enc_algorithm_lookup(i);
if (!ealgo)
continue;
alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
alg->sadb_alg_id = i;
alg->sadb_alg_ivlen = ealgo->ivsize;
alg->sadb_alg_minbits = _BITS(ealgo->minkey);
alg->sadb_alg_maxbits = _BITS(ealgo->maxkey);
off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
}
}
IPSEC_ASSERT(off == len,
("length assumption failed (off %u len %u)", off, len));
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
}
}
void
key_freereg(struct socket *so)
{
struct secreg *reg;
int i;
IPSEC_ASSERT(so != NULL, ("NULL so"));
REGTREE_LOCK();
for (i = 0; i <= SADB_SATYPE_MAX; i++) {
LIST_FOREACH(reg, &V_regtree[i], chain) {
if (reg->so == so && __LIST_CHAINED(reg)) {
LIST_REMOVE(reg, chain);
free(reg, M_IPSEC_SAR);
break;
}
}
}
REGTREE_UNLOCK();
}
static int
key_expire(struct secasvar *sav, int hard)
{
struct mbuf *result = NULL, *m;
struct sadb_lifetime *lt;
uint32_t replay_count;
int error, len;
uint8_t satype;
SECASVAR_RLOCK_TRACKER;
IPSEC_ASSERT (sav != NULL, ("null sav"));
IPSEC_ASSERT (sav->sah != NULL, ("null sa header"));
KEYDBG(KEY_STAMP,
printf("%s: SA(%p) expired %s lifetime\n", __func__,
sav, hard ? "hard": "soft"));
KEYDBG(KEY_DATA, kdebug_secasv(sav));
satype = key_proto2satype(sav->sah->saidx.proto);
IPSEC_ASSERT(satype != 0, ("invalid proto, satype %u", satype));
m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, sav->refcnt);
if (!m) {
error = ENOBUFS;
goto fail;
}
result = m;
m = key_setsadbsa(sav);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
SECASVAR_RLOCK(sav);
replay_count = sav->replay ? sav->replay->count : 0;
SECASVAR_RUNLOCK(sav);
m = key_setsadbxsa2(sav->sah->saidx.mode, replay_count,
sav->sah->saidx.reqid);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
if (sav->replay && sav->replay->wsize > UINT8_MAX) {
m = key_setsadbxsareplay(sav->replay->wsize);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
}
len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL) {
error = ENOBUFS;
goto fail;
}
m_align(m, len);
m->m_len = len;
bzero(mtod(m, caddr_t), len);
lt = mtod(m, struct sadb_lifetime *);
lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
lt->sadb_lifetime_allocations =
(uint32_t)counter_u64_fetch(sav->lft_c_allocations);
lt->sadb_lifetime_bytes =
counter_u64_fetch(sav->lft_c_bytes);
lt->sadb_lifetime_addtime = sav->created;
lt->sadb_lifetime_usetime = sav->firstused;
lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
if (hard) {
lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
lt->sadb_lifetime_allocations = sav->lft_h->allocations;
lt->sadb_lifetime_bytes = sav->lft_h->bytes;
lt->sadb_lifetime_addtime = sav->lft_h->addtime;
lt->sadb_lifetime_usetime = sav->lft_h->usetime;
} else {
lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
lt->sadb_lifetime_allocations = sav->lft_s->allocations;
lt->sadb_lifetime_bytes = sav->lft_s->bytes;
lt->sadb_lifetime_addtime = sav->lft_s->addtime;
lt->sadb_lifetime_usetime = sav->lft_s->usetime;
}
m_cat(result, m);
m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
&sav->sah->saidx.src.sa,
FULLMASK, IPSEC_ULPROTO_ANY);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
&sav->sah->saidx.dst.sa,
FULLMASK, IPSEC_ULPROTO_ANY);
if (!m) {
error = ENOBUFS;
goto fail;
}
m_cat(result, m);
if ((result->m_flags & M_PKTHDR) == 0) {
error = EINVAL;
goto fail;
}
if (result->m_len < sizeof(struct sadb_msg)) {
result = m_pullup(result, sizeof(struct sadb_msg));
if (result == NULL) {
error = ENOBUFS;
goto fail;
}
}
result->m_pkthdr.len = 0;
for (m = result; m; m = m->m_next)
result->m_pkthdr.len += m->m_len;
mtod(result, struct sadb_msg *)->sadb_msg_len =
PFKEY_UNIT64(result->m_pkthdr.len);
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
fail:
if (result)
m_freem(result);
return error;
}
static void
key_freesah_flushed(struct secashead_queue *flushq)
{
struct secashead *sah, *nextsah;
struct secasvar *sav, *nextsav;
sah = TAILQ_FIRST(flushq);
while (sah != NULL) {
sav = TAILQ_FIRST(&sah->savtree_larval);
while (sav != NULL) {
nextsav = TAILQ_NEXT(sav, chain);
TAILQ_REMOVE(&sah->savtree_larval, sav, chain);
key_freesav(&sav);
key_freesah(&sah);
sav = nextsav;
}
sav = TAILQ_FIRST(&sah->savtree_alive);
while (sav != NULL) {
nextsav = TAILQ_NEXT(sav, chain);
TAILQ_REMOVE(&sah->savtree_alive, sav, chain);
key_freesav(&sav);
key_freesah(&sah);
sav = nextsav;
}
nextsah = TAILQ_NEXT(sah, chain);
key_freesah(&sah);
sah = nextsah;
}
}
static int
key_flush(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
struct secashead_queue flushq;
struct sadb_msg *newmsg;
struct secashead *sah, *nextsah;
struct secasvar *sav;
uint8_t proto;
int i;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
KEYDBG(KEY_STAMP,
printf("%s: proto %u\n", __func__, proto));
TAILQ_INIT(&flushq);
if (proto == IPSEC_PROTO_ANY) {
SAHTREE_WLOCK();
TAILQ_CONCAT(&flushq, &V_sahtree, chain);
for (i = 0; i < V_savhash_mask + 1; i++)
LIST_INIT(&V_savhashtbl[i]);
for (i = 0; i < V_sahaddrhash_mask + 1; i++)
LIST_INIT(&V_sahaddrhashtbl[i]);
TAILQ_FOREACH(sah, &flushq, chain) {
sah->state = SADB_SASTATE_DEAD;
TAILQ_FOREACH(sav, &sah->savtree_larval, chain) {
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
}
TAILQ_FOREACH(sav, &sah->savtree_alive, chain) {
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
}
}
SAHTREE_WUNLOCK();
} else {
SAHTREE_WLOCK();
sah = TAILQ_FIRST(&V_sahtree);
while (sah != NULL) {
IPSEC_ASSERT(sah->state != SADB_SASTATE_DEAD,
("DEAD SAH %p in SADB_FLUSH", sah));
nextsah = TAILQ_NEXT(sah, chain);
if (sah->saidx.proto != proto) {
sah = nextsah;
continue;
}
sah->state = SADB_SASTATE_DEAD;
TAILQ_REMOVE(&V_sahtree, sah, chain);
LIST_REMOVE(sah, addrhash);
TAILQ_FOREACH(sav, &sah->savtree_larval, chain) {
LIST_REMOVE(sav, spihash);
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
}
TAILQ_FOREACH(sav, &sah->savtree_alive, chain) {
LIST_REMOVE(sav, spihash);
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
}
TAILQ_INSERT_HEAD(&flushq, sah, chain);
sah = nextsah;
}
SAHTREE_WUNLOCK();
}
key_freesah_flushed(&flushq);
if (m->m_len < sizeof(struct sadb_msg) ||
sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
return key_senderror(so, m, ENOBUFS);
}
if (m->m_next)
m_freem(m->m_next);
m->m_next = NULL;
m->m_pkthdr.len = m->m_len = sizeof(struct sadb_msg);
newmsg = mtod(m, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
}
static int
key_dump(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
SAHTREE_RLOCK_TRACKER;
struct secashead *sah;
struct secasvar *sav;
struct mbuf *n;
uint32_t cnt;
uint8_t proto, satype;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
__func__));
return key_senderror(so, m, EINVAL);
}
cnt = 0;
IFNET_RLOCK();
SAHTREE_RLOCK();
TAILQ_FOREACH(sah, &V_sahtree, chain) {
if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC &&
proto != sah->saidx.proto)
continue;
TAILQ_FOREACH(sav, &sah->savtree_larval, chain)
cnt++;
TAILQ_FOREACH(sav, &sah->savtree_alive, chain)
cnt++;
}
if (cnt == 0) {
SAHTREE_RUNLOCK();
IFNET_RUNLOCK();
return key_senderror(so, m, ENOENT);
}
TAILQ_FOREACH(sah, &V_sahtree, chain) {
if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC &&
proto != sah->saidx.proto)
continue;
if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
SAHTREE_RUNLOCK();
IFNET_RUNLOCK();
ipseclog((LOG_DEBUG, "%s: there was invalid proto in "
"SAD.\n", __func__));
return key_senderror(so, m, EINVAL);
}
TAILQ_FOREACH(sav, &sah->savtree_larval, chain) {
n = key_setdumpsa(sav, SADB_DUMP, satype,
--cnt, mhp->msg->sadb_msg_pid, &sahtree_tracker);
if (n == NULL) {
SAHTREE_RUNLOCK();
IFNET_RUNLOCK();
return key_senderror(so, m, ENOBUFS);
}
key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
TAILQ_FOREACH(sav, &sah->savtree_alive, chain) {
n = key_setdumpsa(sav, SADB_DUMP, satype,
--cnt, mhp->msg->sadb_msg_pid, &sahtree_tracker);
if (n == NULL) {
SAHTREE_RUNLOCK();
IFNET_RUNLOCK();
return key_senderror(so, m, ENOBUFS);
}
key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
}
SAHTREE_RUNLOCK();
IFNET_RUNLOCK();
m_freem(m);
return (0);
}
static int
key_promisc(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
{
int olen;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
if (olen < sizeof(struct sadb_msg)) {
#if 1
return key_senderror(so, m, EINVAL);
#else
m_freem(m);
return 0;
#endif
} else if (olen == sizeof(struct sadb_msg)) {
struct keycb *kp;
if ((kp = so->so_pcb) == NULL)
return key_senderror(so, m, EINVAL);
mhp->msg->sadb_msg_errno = 0;
switch (mhp->msg->sadb_msg_satype) {
case 0:
case 1:
kp->kp_promisc = mhp->msg->sadb_msg_satype;
break;
default:
return key_senderror(so, m, EINVAL);
}
mhp->msg->sadb_msg_errno = 0;
return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
} else {
m_adj(m, PFKEY_ALIGN8(sizeof(struct sadb_msg)));
return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
}
}
static int (*key_typesw[])(struct socket *, struct mbuf *,
const struct sadb_msghdr *) = {
[SADB_RESERVED] = NULL,
[SADB_GETSPI] = key_getspi,
[SADB_UPDATE] = key_update,
[SADB_ADD] = key_add,
[SADB_DELETE] = key_delete,
[SADB_GET] = key_get,
[SADB_ACQUIRE] = key_acquire2,
[SADB_REGISTER] = key_register,
[SADB_EXPIRE] = NULL,
[SADB_FLUSH] = key_flush,
[SADB_DUMP] = key_dump,
[SADB_X_PROMISC] = key_promisc,
[SADB_X_PCHANGE] = NULL,
[SADB_X_SPDUPDATE] = key_spdadd,
[SADB_X_SPDADD] = key_spdadd,
[SADB_X_SPDDELETE] = key_spddelete,
[SADB_X_SPDGET] = key_spdget,
[SADB_X_SPDACQUIRE] = NULL,
[SADB_X_SPDDUMP] = key_spddump,
[SADB_X_SPDFLUSH] = key_spdflush,
[SADB_X_SPDSETIDX] = key_spdadd,
[SADB_X_SPDEXPIRE] = NULL,
[SADB_X_SPDDELETE2] = key_spddelete2,
};
int
key_parse(struct mbuf *m, struct socket *so)
{
struct sadb_msg *msg;
struct sadb_msghdr mh;
u_int orglen;
int error;
int target;
IPSEC_ASSERT(so != NULL, ("null socket"));
IPSEC_ASSERT(m != NULL, ("null mbuf"));
if (m->m_len < sizeof(struct sadb_msg)) {
m = m_pullup(m, sizeof(struct sadb_msg));
if (!m)
return ENOBUFS;
}
msg = mtod(m, struct sadb_msg *);
orglen = PFKEY_UNUNIT64(msg->sadb_msg_len);
target = KEY_SENDUP_ONE;
if ((m->m_flags & M_PKTHDR) == 0 || m->m_pkthdr.len != orglen) {
ipseclog((LOG_DEBUG, "%s: invalid message length.\n",__func__));
PFKEYSTAT_INC(out_invlen);
error = EINVAL;
goto senderror;
}
if (msg->sadb_msg_version != PF_KEY_V2) {
ipseclog((LOG_DEBUG, "%s: PF_KEY version %u is mismatched.\n",
__func__, msg->sadb_msg_version));
PFKEYSTAT_INC(out_invver);
error = EINVAL;
goto senderror;
}
if (msg->sadb_msg_type > SADB_MAX) {
ipseclog((LOG_DEBUG, "%s: invalid type %u is passed.\n",
__func__, msg->sadb_msg_type));
PFKEYSTAT_INC(out_invmsgtype);
error = EINVAL;
goto senderror;
}
if (m->m_pkthdr.len > MCLBYTES) {
m_freem(m);
return ENOBUFS;
}
if (m->m_next) {
struct mbuf *n;
n = key_mget(m->m_pkthdr.len);
if (n == NULL) {
m_freem(m);
return ENOBUFS;
}
m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t));
n->m_pkthdr.len = n->m_len = m->m_pkthdr.len;
n->m_next = NULL;
m_freem(m);
m = n;
}
error = key_align(m, &mh);
if (error)
return error;
msg = mh.msg;
if (msg->sadb_msg_type == SADB_X_SPDDUMP) {
switch (msg->sadb_msg_satype) {
case IPSEC_POLICYSCOPE_ANY:
case IPSEC_POLICYSCOPE_GLOBAL:
case IPSEC_POLICYSCOPE_IFNET:
case IPSEC_POLICYSCOPE_PCB:
break;
default:
ipseclog((LOG_DEBUG, "%s: illegal satype=%u\n",
__func__, msg->sadb_msg_type));
PFKEYSTAT_INC(out_invsatype);
error = EINVAL;
goto senderror;
}
} else {
switch (msg->sadb_msg_satype) {
case SADB_SATYPE_UNSPEC:
switch (msg->sadb_msg_type) {
case SADB_GETSPI:
case SADB_UPDATE:
case SADB_ADD:
case SADB_DELETE:
case SADB_GET:
case SADB_ACQUIRE:
case SADB_EXPIRE:
ipseclog((LOG_DEBUG, "%s: must specify satype "
"when msg type=%u.\n", __func__,
msg->sadb_msg_type));
PFKEYSTAT_INC(out_invsatype);
error = EINVAL;
goto senderror;
}
break;
case SADB_SATYPE_AH:
case SADB_SATYPE_ESP:
case SADB_X_SATYPE_IPCOMP:
case SADB_X_SATYPE_TCPSIGNATURE:
switch (msg->sadb_msg_type) {
case SADB_X_SPDADD:
case SADB_X_SPDDELETE:
case SADB_X_SPDGET:
case SADB_X_SPDFLUSH:
case SADB_X_SPDSETIDX:
case SADB_X_SPDUPDATE:
case SADB_X_SPDDELETE2:
ipseclog((LOG_DEBUG, "%s: illegal satype=%u\n",
__func__, msg->sadb_msg_type));
PFKEYSTAT_INC(out_invsatype);
error = EINVAL;
goto senderror;
}
break;
case SADB_SATYPE_RSVP:
case SADB_SATYPE_OSPFV2:
case SADB_SATYPE_RIPV2:
case SADB_SATYPE_MIP:
ipseclog((LOG_DEBUG, "%s: type %u isn't supported.\n",
__func__, msg->sadb_msg_satype));
PFKEYSTAT_INC(out_invsatype);
error = EOPNOTSUPP;
goto senderror;
case 1:
if (msg->sadb_msg_type == SADB_X_PROMISC)
break;
default:
ipseclog((LOG_DEBUG, "%s: invalid type %u is passed.\n",
__func__, msg->sadb_msg_satype));
PFKEYSTAT_INC(out_invsatype);
error = EINVAL;
goto senderror;
}
}
if (mh.ext[SADB_EXT_ADDRESS_SRC] != NULL
&& mh.ext[SADB_EXT_ADDRESS_DST] != NULL) {
struct sadb_address *src0, *dst0;
u_int plen;
src0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_DST]);
if (src0->sadb_address_proto != dst0->sadb_address_proto) {
ipseclog((LOG_DEBUG, "%s: upper layer protocol "
"mismatched.\n", __func__));
PFKEYSTAT_INC(out_invaddr);
error = EINVAL;
goto senderror;
}
if (PFKEY_ADDR_SADDR(src0)->sa_family !=
PFKEY_ADDR_SADDR(dst0)->sa_family) {
ipseclog((LOG_DEBUG, "%s: address family mismatched.\n",
__func__));
PFKEYSTAT_INC(out_invaddr);
error = EINVAL;
goto senderror;
}
if (PFKEY_ADDR_SADDR(src0)->sa_len !=
PFKEY_ADDR_SADDR(dst0)->sa_len) {
ipseclog((LOG_DEBUG, "%s: address struct size "
"mismatched.\n", __func__));
PFKEYSTAT_INC(out_invaddr);
error = EINVAL;
goto senderror;
}
switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
case AF_INET:
if (PFKEY_ADDR_SADDR(src0)->sa_len !=
sizeof(struct sockaddr_in)) {
PFKEYSTAT_INC(out_invaddr);
error = EINVAL;
goto senderror;
}
break;
case AF_INET6:
if (PFKEY_ADDR_SADDR(src0)->sa_len !=
sizeof(struct sockaddr_in6)) {
PFKEYSTAT_INC(out_invaddr);
error = EINVAL;
goto senderror;
}
break;
default:
ipseclog((LOG_DEBUG, "%s: unsupported address family\n",
__func__));
PFKEYSTAT_INC(out_invaddr);
error = EAFNOSUPPORT;
goto senderror;
}
switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
case AF_INET:
plen = sizeof(struct in_addr) << 3;
break;
case AF_INET6:
plen = sizeof(struct in6_addr) << 3;
break;
default:
plen = 0;
break;
}
if (src0->sadb_address_prefixlen > plen ||
dst0->sadb_address_prefixlen > plen) {
ipseclog((LOG_DEBUG, "%s: illegal prefixlen.\n",
__func__));
PFKEYSTAT_INC(out_invaddr);
error = EINVAL;
goto senderror;
}
}
if (msg->sadb_msg_type >= nitems(key_typesw) ||
key_typesw[msg->sadb_msg_type] == NULL) {
PFKEYSTAT_INC(out_invmsgtype);
error = EINVAL;
goto senderror;
}
return (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
senderror:
msg->sadb_msg_errno = error;
return key_sendup_mbuf(so, m, target);
}
static int
key_senderror(struct socket *so, struct mbuf *m, int code)
{
struct sadb_msg *msg;
IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
("mbuf too small, len %u", m->m_len));
msg = mtod(m, struct sadb_msg *);
msg->sadb_msg_errno = code;
return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
}
static int
key_align(struct mbuf *m, struct sadb_msghdr *mhp)
{
struct mbuf *n;
struct sadb_ext *ext;
size_t off, end;
int extlen;
int toff;
IPSEC_ASSERT(m != NULL, ("null mbuf"));
IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
("mbuf too small, len %u", m->m_len));
bzero(mhp, sizeof(*mhp));
mhp->msg = mtod(m, struct sadb_msg *);
mhp->ext[0] = (struct sadb_ext *)mhp->msg;
end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
extlen = end;
for (off = sizeof(struct sadb_msg); off < end; off += extlen) {
n = m_pulldown(m, off, sizeof(struct sadb_ext), &toff);
if (!n) {
return ENOBUFS;
}
ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
switch (ext->sadb_ext_type) {
case SADB_EXT_SA:
case SADB_EXT_ADDRESS_SRC:
case SADB_EXT_ADDRESS_DST:
case SADB_EXT_ADDRESS_PROXY:
case SADB_EXT_LIFETIME_CURRENT:
case SADB_EXT_LIFETIME_HARD:
case SADB_EXT_LIFETIME_SOFT:
case SADB_EXT_KEY_AUTH:
case SADB_EXT_KEY_ENCRYPT:
case SADB_EXT_IDENTITY_SRC:
case SADB_EXT_IDENTITY_DST:
case SADB_EXT_SENSITIVITY:
case SADB_EXT_PROPOSAL:
case SADB_EXT_SUPPORTED_AUTH:
case SADB_EXT_SUPPORTED_ENCRYPT:
case SADB_EXT_SPIRANGE:
case SADB_X_EXT_POLICY:
case SADB_X_EXT_SA2:
case SADB_X_EXT_NAT_T_TYPE:
case SADB_X_EXT_NAT_T_SPORT:
case SADB_X_EXT_NAT_T_DPORT:
case SADB_X_EXT_NAT_T_OAI:
case SADB_X_EXT_NAT_T_OAR:
case SADB_X_EXT_NAT_T_FRAG:
case SADB_X_EXT_SA_REPLAY:
case SADB_X_EXT_NEW_ADDRESS_SRC:
case SADB_X_EXT_NEW_ADDRESS_DST:
#ifdef IPSEC_OFFLOAD
case SADB_X_EXT_LFT_CUR_SW_OFFL:
case SADB_X_EXT_LFT_CUR_HW_OFFL:
case SADB_X_EXT_IF_HW_OFFL:
#endif
if (mhp->ext[ext->sadb_ext_type] != NULL) {
ipseclog((LOG_DEBUG, "%s: duplicate ext_type "
"%u\n", __func__, ext->sadb_ext_type));
m_freem(m);
PFKEYSTAT_INC(out_dupext);
return EINVAL;
}
break;
default:
ipseclog((LOG_DEBUG, "%s: invalid ext_type %u\n",
__func__, ext->sadb_ext_type));
m_freem(m);
PFKEYSTAT_INC(out_invexttype);
return EINVAL;
}
extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
if (key_validate_ext(ext, extlen)) {
m_freem(m);
PFKEYSTAT_INC(out_invlen);
return EINVAL;
}
n = m_pulldown(m, off, extlen, &toff);
if (!n) {
return ENOBUFS;
}
ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
mhp->ext[ext->sadb_ext_type] = ext;
mhp->extoff[ext->sadb_ext_type] = off;
mhp->extlen[ext->sadb_ext_type] = extlen;
}
if (off != end) {
m_freem(m);
PFKEYSTAT_INC(out_invlen);
return EINVAL;
}
return 0;
}
static int
key_validate_ext(const struct sadb_ext *ext, int len)
{
const struct sockaddr *sa;
enum { NONE, ADDR } checktype = NONE;
int baselen = 0;
const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_len);
if (len != PFKEY_UNUNIT64(ext->sadb_ext_len))
return EINVAL;
if (ext->sadb_ext_type >= nitems(minsize) ||
ext->sadb_ext_type >= nitems(maxsize))
return EINVAL;
if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type])
return EINVAL;
if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type])
return EINVAL;
switch (ext->sadb_ext_type) {
case SADB_EXT_ADDRESS_SRC:
case SADB_EXT_ADDRESS_DST:
case SADB_EXT_ADDRESS_PROXY:
case SADB_X_EXT_NAT_T_OAI:
case SADB_X_EXT_NAT_T_OAR:
case SADB_X_EXT_NEW_ADDRESS_SRC:
case SADB_X_EXT_NEW_ADDRESS_DST:
baselen = PFKEY_ALIGN8(sizeof(struct sadb_address));
checktype = ADDR;
break;
case SADB_EXT_IDENTITY_SRC:
case SADB_EXT_IDENTITY_DST:
if (((const struct sadb_ident *)ext)->sadb_ident_type ==
SADB_X_IDENTTYPE_ADDR) {
baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident));
checktype = ADDR;
} else
checktype = NONE;
break;
default:
checktype = NONE;
break;
}
switch (checktype) {
case NONE:
break;
case ADDR:
sa = (const struct sockaddr *)(((const u_int8_t*)ext)+baselen);
if (len < baselen + sal)
return EINVAL;
if (baselen + PFKEY_ALIGN8(sa->sa_len) != len)
return EINVAL;
break;
}
return 0;
}
void
spdcache_init(void)
{
int i;
TUNABLE_INT_FETCH("net.key.spdcache.maxentries",
&V_key_spdcache_maxentries);
TUNABLE_INT_FETCH("net.key.spdcache.threshold",
&V_key_spdcache_threshold);
if (V_key_spdcache_maxentries) {
V_key_spdcache_maxentries = MAX(V_key_spdcache_maxentries,
SPDCACHE_MAX_ENTRIES_PER_HASH);
V_spdcachehashtbl = hashinit(V_key_spdcache_maxentries /
SPDCACHE_MAX_ENTRIES_PER_HASH,
M_IPSEC_SPDCACHE, &V_spdcachehash_mask);
V_key_spdcache_maxentries = (V_spdcachehash_mask + 1)
* SPDCACHE_MAX_ENTRIES_PER_HASH;
V_spdcache_lock = malloc(sizeof(struct mtx) *
(V_spdcachehash_mask + 1),
M_IPSEC_SPDCACHE, M_WAITOK | M_ZERO);
for (i = 0; i < V_spdcachehash_mask + 1; ++i)
SPDCACHE_LOCK_INIT(i);
}
}
struct spdcache_entry *
spdcache_entry_alloc(const struct secpolicyindex *spidx, struct secpolicy *sp)
{
struct spdcache_entry *entry;
entry = malloc(sizeof(struct spdcache_entry), M_IPSEC_SPDCACHE,
M_NOWAIT | M_ZERO);
if (entry == NULL)
return (NULL);
if (sp != NULL)
SP_ADDREF(sp);
entry->spidx = *spidx;
entry->sp = sp;
return (entry);
}
void
spdcache_entry_free(struct spdcache_entry *entry)
{
if (entry->sp != NULL)
key_freesp(&entry->sp);
free(entry, M_IPSEC_SPDCACHE);
}
void
spdcache_clear(void)
{
struct spdcache_entry *entry;
int i;
for (i = 0; i < V_spdcachehash_mask + 1; ++i) {
SPDCACHE_LOCK(i);
while (!LIST_EMPTY(&V_spdcachehashtbl[i])) {
entry = LIST_FIRST(&V_spdcachehashtbl[i]);
LIST_REMOVE(entry, chain);
spdcache_entry_free(entry);
}
SPDCACHE_UNLOCK(i);
}
}
#ifdef VIMAGE
void
spdcache_destroy(void)
{
int i;
if (SPDCACHE_ENABLED()) {
spdcache_clear();
hashdestroy(V_spdcachehashtbl, M_IPSEC_SPDCACHE, V_spdcachehash_mask);
for (i = 0; i < V_spdcachehash_mask + 1; ++i)
SPDCACHE_LOCK_DESTROY(i);
free(V_spdcache_lock, M_IPSEC_SPDCACHE);
}
}
#endif
static void
key_vnet_init(void *arg __unused)
{
int i;
for (i = 0; i < IPSEC_DIR_MAX; i++) {
TAILQ_INIT(&V_sptree[i]);
TAILQ_INIT(&V_sptree_ifnet[i]);
}
TAILQ_INIT(&V_sahtree);
V_sphashtbl = hashinit(SPHASH_NHASH, M_IPSEC_SP, &V_sphash_mask);
V_savhashtbl = hashinit(SAVHASH_NHASH, M_IPSEC_SA, &V_savhash_mask);
V_sahaddrhashtbl = hashinit(SAHHASH_NHASH, M_IPSEC_SAH,
&V_sahaddrhash_mask);
V_acqaddrhashtbl = hashinit(ACQHASH_NHASH, M_IPSEC_SAQ,
&V_acqaddrhash_mask);
V_acqseqhashtbl = hashinit(ACQHASH_NHASH, M_IPSEC_SAQ,
&V_acqseqhash_mask);
spdcache_init();
for (i = 0; i <= SADB_SATYPE_MAX; i++)
LIST_INIT(&V_regtree[i]);
LIST_INIT(&V_acqtree);
LIST_INIT(&V_spacqtree);
}
VNET_SYSINIT(key_vnet_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_SECOND,
key_vnet_init, NULL);
static void
key_init(void *arg __unused)
{
ipsec_key_lft_zone = uma_zcreate("IPsec SA lft_c",
sizeof(uint64_t) * 2, NULL, NULL, NULL, NULL,
UMA_ALIGN_PTR, UMA_ZONE_PCPU);
SPTREE_LOCK_INIT();
REGTREE_LOCK_INIT();
SAHTREE_LOCK_INIT();
ACQ_LOCK_INIT();
SPACQ_LOCK_INIT();
SPI_ALLOC_LOCK_INIT();
#ifndef IPSEC_DEBUG2
callout_init(&key_timer, 1);
callout_reset(&key_timer, hz, key_timehandler, NULL);
#endif
keystat.getspi_count = 1;
if (bootverbose)
printf("IPsec: Initialized Security Association Processing.\n");
}
SYSINIT(key_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, key_init, NULL);
#ifdef VIMAGE
static void
key_vnet_destroy(void *arg __unused)
{
struct secashead_queue sahdrainq;
struct secpolicy_queue drainq;
struct secpolicy *sp, *nextsp;
struct secacq *acq, *nextacq;
struct secspacq *spacq, *nextspacq;
struct secashead *sah;
struct secasvar *sav;
struct secreg *reg;
int i;
TAILQ_INIT(&drainq);
SPTREE_WLOCK();
for (i = 0; i < IPSEC_DIR_MAX; i++) {
TAILQ_CONCAT(&drainq, &V_sptree[i], chain);
TAILQ_CONCAT(&drainq, &V_sptree_ifnet[i], chain);
}
for (i = 0; i < V_sphash_mask + 1; i++)
LIST_INIT(&V_sphashtbl[i]);
SPTREE_WUNLOCK();
spdcache_destroy();
sp = TAILQ_FIRST(&drainq);
while (sp != NULL) {
nextsp = TAILQ_NEXT(sp, chain);
key_freesp(&sp);
sp = nextsp;
}
TAILQ_INIT(&sahdrainq);
SAHTREE_WLOCK();
TAILQ_CONCAT(&sahdrainq, &V_sahtree, chain);
for (i = 0; i < V_savhash_mask + 1; i++)
LIST_INIT(&V_savhashtbl[i]);
for (i = 0; i < V_sahaddrhash_mask + 1; i++)
LIST_INIT(&V_sahaddrhashtbl[i]);
TAILQ_FOREACH(sah, &sahdrainq, chain) {
sah->state = SADB_SASTATE_DEAD;
TAILQ_FOREACH(sav, &sah->savtree_larval, chain) {
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
}
TAILQ_FOREACH(sav, &sah->savtree_alive, chain) {
sav->state = SADB_SASTATE_DEAD;
ipsec_accel_forget_sav(sav);
}
}
SAHTREE_WUNLOCK();
ipsec_accel_sync();
key_freesah_flushed(&sahdrainq);
hashdestroy(V_sphashtbl, M_IPSEC_SP, V_sphash_mask);
hashdestroy(V_savhashtbl, M_IPSEC_SA, V_savhash_mask);
hashdestroy(V_sahaddrhashtbl, M_IPSEC_SAH, V_sahaddrhash_mask);
REGTREE_LOCK();
for (i = 0; i <= SADB_SATYPE_MAX; i++) {
LIST_FOREACH(reg, &V_regtree[i], chain) {
if (__LIST_CHAINED(reg)) {
LIST_REMOVE(reg, chain);
free(reg, M_IPSEC_SAR);
break;
}
}
}
REGTREE_UNLOCK();
ACQ_LOCK();
acq = LIST_FIRST(&V_acqtree);
while (acq != NULL) {
nextacq = LIST_NEXT(acq, chain);
LIST_REMOVE(acq, chain);
free(acq, M_IPSEC_SAQ);
acq = nextacq;
}
for (i = 0; i < V_acqaddrhash_mask + 1; i++)
LIST_INIT(&V_acqaddrhashtbl[i]);
for (i = 0; i < V_acqseqhash_mask + 1; i++)
LIST_INIT(&V_acqseqhashtbl[i]);
ACQ_UNLOCK();
SPACQ_LOCK();
for (spacq = LIST_FIRST(&V_spacqtree); spacq != NULL;
spacq = nextspacq) {
nextspacq = LIST_NEXT(spacq, chain);
if (__LIST_CHAINED(spacq)) {
LIST_REMOVE(spacq, chain);
free(spacq, M_IPSEC_SAQ);
}
}
SPACQ_UNLOCK();
hashdestroy(V_acqaddrhashtbl, M_IPSEC_SAQ, V_acqaddrhash_mask);
hashdestroy(V_acqseqhashtbl, M_IPSEC_SAQ, V_acqseqhash_mask);
}
VNET_SYSUNINIT(key_vnet_destroy, SI_SUB_PROTO_DOMAIN, SI_ORDER_SECOND,
key_vnet_destroy, NULL);
#endif
static void
key_destroy(void *arg __unused)
{
uma_zdestroy(ipsec_key_lft_zone);
#ifndef IPSEC_DEBUG2
callout_drain(&key_timer);
#endif
SPTREE_LOCK_DESTROY();
REGTREE_LOCK_DESTROY();
SAHTREE_LOCK_DESTROY();
ACQ_LOCK_DESTROY();
SPACQ_LOCK_DESTROY();
SPI_ALLOC_LOCK_DESTROY();
}
SYSUNINIT(key_destroy, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, key_destroy, NULL);
void
key_sa_recordxfer(struct secasvar *sav, struct mbuf *m)
{
IPSEC_ASSERT(sav != NULL, ("Null secasvar"));
IPSEC_ASSERT(m != NULL, ("Null mbuf"));
counter_u64_add(sav->lft_c_bytes, m->m_pkthdr.len);
counter_u64_add(sav->lft_c_allocations, 1);
if (sav->firstused == 0)
sav->firstused = time_second;
}
static struct mbuf *
key_setkey(struct seckey *src, uint16_t exttype)
{
struct mbuf *m;
struct sadb_key *p;
int len;
if (src == NULL)
return NULL;
len = PFKEY_ALIGN8(sizeof(struct sadb_key) + _KEYLEN(src));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return NULL;
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_key *);
bzero(p, len);
p->sadb_key_len = PFKEY_UNIT64(len);
p->sadb_key_exttype = exttype;
p->sadb_key_bits = src->bits;
bcopy(src->key_data, _KEYBUF(p), _KEYLEN(src));
return m;
}
#ifdef IPSEC_OFFLOAD
struct mbuf *
key_setaccelif(const char *ifname)
{
struct mbuf *m = NULL;
struct sadb_x_if_hw_offl *p;
int len = PFKEY_ALIGN8(sizeof(*p));
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return (m);
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_x_if_hw_offl *);
bzero(p, len);
p->sadb_x_if_hw_offl_len = PFKEY_UNIT64(len);
p->sadb_x_if_hw_offl_exttype = SADB_X_EXT_IF_HW_OFFL;
p->sadb_x_if_hw_offl_flags = 0;
strncpy(p->sadb_x_if_hw_offl_if, ifname,
sizeof(p->sadb_x_if_hw_offl_if));
return (m);
}
#endif
static struct mbuf *
key_setlifetime(struct seclifetime *src, uint16_t exttype)
{
struct mbuf *m = NULL;
struct sadb_lifetime *p;
int len = PFKEY_ALIGN8(sizeof(struct sadb_lifetime));
if (src == NULL)
return NULL;
m = m_get2(len, M_NOWAIT, MT_DATA, 0);
if (m == NULL)
return m;
m_align(m, len);
m->m_len = len;
p = mtod(m, struct sadb_lifetime *);
bzero(p, len);
p->sadb_lifetime_len = PFKEY_UNIT64(len);
p->sadb_lifetime_exttype = exttype;
p->sadb_lifetime_allocations = src->allocations;
p->sadb_lifetime_bytes = src->bytes;
p->sadb_lifetime_addtime = src->addtime;
p->sadb_lifetime_usetime = src->usetime;
return m;
}
const struct enc_xform *
enc_algorithm_lookup(int alg)
{
int i;
for (i = 0; i < nitems(supported_ealgs); i++)
if (alg == supported_ealgs[i].sadb_alg)
return (supported_ealgs[i].xform);
return (NULL);
}
const struct auth_hash *
auth_algorithm_lookup(int alg)
{
int i;
for (i = 0; i < nitems(supported_aalgs); i++)
if (alg == supported_aalgs[i].sadb_alg)
return (supported_aalgs[i].xform);
return (NULL);
}
const struct comp_algo *
comp_algorithm_lookup(int alg)
{
int i;
for (i = 0; i < nitems(supported_calgs); i++)
if (alg == supported_calgs[i].sadb_alg)
return (supported_calgs[i].xform);
return (NULL);
}
void
ipsec_sahtree_runlock(struct rm_priotracker *sahtree_trackerp)
{
rm_runlock(&sahtree_lock, sahtree_trackerp);
}
void
ipsec_sahtree_rlock(struct rm_priotracker *sahtree_trackerp)
{
rm_rlock(&sahtree_lock, sahtree_trackerp);
}
#ifdef IPSEC_OFFLOAD
void
ipsec_accel_on_ifdown(struct ifnet *ifp)
{
void (*p)(struct ifnet *ifp);
p = atomic_load_ptr(&ipsec_accel_on_ifdown_p);
if (p != NULL)
p(ifp);
}
void
ipsec_accel_drv_sa_lifetime_update(struct secasvar *sav, if_t ifp,
u_int drv_spi, uint64_t octets, uint64_t allocs)
{
void (*p)(struct secasvar *sav, if_t ifp, u_int drv_spi,
uint64_t octets, uint64_t allocs);
p = atomic_load_ptr(&ipsec_accel_drv_sa_lifetime_update_p);
if (p != NULL)
p(sav, ifp, drv_spi, octets, allocs);
}
int
ipsec_accel_drv_sa_lifetime_fetch(struct secasvar *sav,
if_t ifp, u_int drv_spi, uint64_t *octets, uint64_t *allocs)
{
int (*p)(struct secasvar *sav, if_t ifp, u_int drv_spi,
uint64_t *octets, uint64_t *allocs);
p = atomic_load_ptr(&ipsec_accel_drv_sa_lifetime_fetch_p);
if (p == NULL)
return (EOPNOTSUPP);
return (p(sav, ifp, drv_spi, octets, allocs));
}
#endif
