#include <netinet/sctp_os.h>
#include <sys/proc.h>
#include <netinet/sctp_var.h>
#include <netinet/sctp_sysctl.h>
#include <netinet/sctp_pcb.h>
#include <netinet/sctputil.h>
#include <netinet/sctp.h>
#include <netinet/sctp_header.h>
#include <netinet/sctp_asconf.h>
#include <netinet/sctp_output.h>
#include <netinet/sctp_timer.h>
#include <netinet/sctp_bsd_addr.h>
#if defined(INET) || defined(INET6)
#include <netinet/udp.h>
#endif
#ifdef INET6
#include <netinet6/ip6_var.h>
#endif
#include <sys/sched.h>
#include <sys/smp.h>
#include <sys/unistd.h>
#ifdef INET6
int
SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
{
struct sockaddr_in6 tmp_a, tmp_b;
memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
return (0);
}
memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
return (0);
}
return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
}
#endif
void
sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
{
SCTP_INP_INFO_RLOCK();
spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
SCTP_INP_INFO_RUNLOCK();
}
struct sctp_vrf *
sctp_allocate_vrf(int vrf_id)
{
struct sctp_vrf *vrf = NULL;
struct sctp_vrflist *bucket;
vrf = sctp_find_vrf(vrf_id);
if (vrf) {
return (vrf);
}
SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
SCTP_M_VRF);
if (vrf == NULL) {
#ifdef INVARIANTS
panic("No memory for VRF:%d", vrf_id);
#endif
return (NULL);
}
memset(vrf, 0, sizeof(struct sctp_vrf));
vrf->vrf_id = vrf_id;
LIST_INIT(&vrf->ifnlist);
vrf->total_ifa_count = 0;
vrf->refcount = 0;
SCTP_INIT_VRF_TABLEID(vrf);
vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
&vrf->vrf_addr_hashmark);
if (vrf->vrf_addr_hash == NULL) {
#ifdef INVARIANTS
panic("No memory for VRF:%d", vrf_id);
#endif
SCTP_FREE(vrf, SCTP_M_VRF);
return (NULL);
}
bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
LIST_INSERT_HEAD(bucket, vrf, next_vrf);
atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
return (vrf);
}
struct sctp_ifn *
sctp_find_ifn(void *ifn, uint32_t ifn_index)
{
struct sctp_ifn *sctp_ifnp;
struct sctp_ifnlist *hash_ifn_head;
SCTP_IPI_ADDR_LOCK_ASSERT();
KASSERT(ifn != NULL, ("sctp_find_ifn(NULL, %u) called", ifn_index));
hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
if (sctp_ifnp->ifn_index == ifn_index &&
sctp_ifnp->ifn_p == ifn) {
break;
}
}
return (sctp_ifnp);
}
struct sctp_vrf *
sctp_find_vrf(uint32_t vrf_id)
{
struct sctp_vrflist *bucket;
struct sctp_vrf *liste;
bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
LIST_FOREACH(liste, bucket, next_vrf) {
if (vrf_id == liste->vrf_id) {
return (liste);
}
}
return (NULL);
}
void
sctp_free_vrf(struct sctp_vrf *vrf)
{
if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
if (vrf->vrf_addr_hash) {
SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
vrf->vrf_addr_hash = NULL;
}
LIST_REMOVE(vrf, next_vrf);
SCTP_FREE(vrf, SCTP_M_VRF);
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
}
}
static void
sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
{
if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
if (sctp_ifnp->vrf) {
sctp_free_vrf(sctp_ifnp->vrf);
}
SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
}
}
void
sctp_free_ifa(struct sctp_ifa *sctp_ifap)
{
if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
if (sctp_ifap->ifn_p) {
sctp_free_ifn(sctp_ifap->ifn_p);
}
SCTP_FREE(sctp_ifap, SCTP_M_IFA);
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
}
}
static void
sctp_delete_ifn(struct sctp_ifn *sctp_ifnp)
{
SCTP_IPI_ADDR_WLOCK_ASSERT();
if (sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index) == NULL) {
return;
}
LIST_REMOVE(sctp_ifnp, next_bucket);
LIST_REMOVE(sctp_ifnp, next_ifn);
sctp_free_ifn(sctp_ifnp);
}
static void
sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
{
int ifa_af;
SCTP_IPI_ADDR_WLOCK_ASSERT();
LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
sctp_ifap->ifn_p = sctp_ifnp;
atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
sctp_ifnp->ifa_count++;
ifa_af = sctp_ifap->address.sa.sa_family;
switch (ifa_af) {
#ifdef INET
case AF_INET:
sctp_ifnp->num_v4++;
break;
#endif
#ifdef INET6
case AF_INET6:
sctp_ifnp->num_v6++;
break;
#endif
default:
break;
}
if (sctp_ifnp->ifa_count == 1) {
sctp_ifnp->registered_af = ifa_af;
}
}
static void
sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
{
SCTP_IPI_ADDR_WLOCK_ASSERT();
LIST_REMOVE(sctp_ifap, next_ifa);
if (sctp_ifap->ifn_p) {
sctp_ifap->ifn_p->ifa_count--;
switch (sctp_ifap->address.sa.sa_family) {
#ifdef INET
case AF_INET:
sctp_ifap->ifn_p->num_v4--;
break;
#endif
#ifdef INET6
case AF_INET6:
sctp_ifap->ifn_p->num_v6--;
break;
#endif
default:
break;
}
if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
sctp_delete_ifn(sctp_ifap->ifn_p);
} else {
if ((sctp_ifap->ifn_p->num_v6 == 0) &&
(sctp_ifap->ifn_p->registered_af == AF_INET6)) {
sctp_ifap->ifn_p->registered_af = AF_INET;
} else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
(sctp_ifap->ifn_p->registered_af == AF_INET)) {
sctp_ifap->ifn_p->registered_af = AF_INET6;
}
sctp_free_ifn(sctp_ifap->ifn_p);
}
sctp_ifap->ifn_p = NULL;
}
}
struct sctp_ifa *
sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
uint32_t ifn_type, const char *if_name, void *ifa,
struct sockaddr *addr, uint32_t ifa_flags,
int dynamic_add)
{
struct sctp_vrf *vrf;
struct sctp_ifn *sctp_ifnp, *new_sctp_ifnp;
struct sctp_ifa *sctp_ifap, *new_sctp_ifap;
struct sctp_ifalist *hash_addr_head;
struct sctp_ifnlist *hash_ifn_head;
uint32_t hash_of_addr;
#ifdef SCTP_DEBUG
SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
#endif
SCTP_MALLOC(new_sctp_ifnp, struct sctp_ifn *,
sizeof(struct sctp_ifn), SCTP_M_IFN);
if (new_sctp_ifnp == NULL) {
#ifdef INVARIANTS
panic("No memory for IFN");
#endif
return (NULL);
}
SCTP_MALLOC(new_sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
if (new_sctp_ifap == NULL) {
#ifdef INVARIANTS
panic("No memory for IFA");
#endif
SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
return (NULL);
}
SCTP_IPI_ADDR_WLOCK();
sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
if (sctp_ifnp) {
vrf = sctp_ifnp->vrf;
} else {
vrf = sctp_find_vrf(vrf_id);
if (vrf == NULL) {
vrf = sctp_allocate_vrf(vrf_id);
if (vrf == NULL) {
SCTP_IPI_ADDR_WUNLOCK();
SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
return (NULL);
}
}
}
if (sctp_ifnp == NULL) {
sctp_ifnp = new_sctp_ifnp;
new_sctp_ifnp = NULL;
memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
sctp_ifnp->ifn_index = ifn_index;
sctp_ifnp->ifn_p = ifn;
sctp_ifnp->ifn_type = ifn_type;
sctp_ifnp->refcount = 0;
sctp_ifnp->vrf = vrf;
atomic_add_int(&vrf->refcount, 1);
sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index);
if (if_name != NULL) {
SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
} else {
SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
}
hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
LIST_INIT(&sctp_ifnp->ifalist);
LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
}
sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
if (sctp_ifap != NULL) {
if (sctp_ifap->ifn_p != NULL) {
if (sctp_ifap->ifn_p->ifn_index == ifn_index &&
sctp_ifap->ifn_p->ifn_p == ifn) {
SCTPDBG(SCTP_DEBUG_PCB4,
"Using existing ifn %s (0x%x) for ifa %p\n",
sctp_ifap->ifn_p->ifn_name, ifn_index,
(void *)sctp_ifap);
if (new_sctp_ifnp == NULL) {
sctp_delete_ifn(sctp_ifnp);
}
if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
SCTPDBG(SCTP_DEBUG_PCB4,
"Clearing deleted ifa flag\n");
sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
#ifdef INET6
if (sctp_ifap->address.sa.sa_family == AF_INET6) {
sctp_gather_internal_ifa_flags(sctp_ifap);
}
#endif
sctp_ifap->ifn_p = sctp_ifnp;
atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
}
} else {
SCTPDBG(SCTP_DEBUG_PCB4,
"Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
(void *)sctp_ifap,
sctp_ifap->ifn_p->ifn_name,
sctp_ifap->ifn_p->ifn_index, if_name,
ifn_index);
sctp_remove_ifa_from_ifn(sctp_ifap);
sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
}
} else {
sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
#ifdef INET6
if (sctp_ifap->address.sa.sa_family == AF_INET6) {
sctp_gather_internal_ifa_flags(sctp_ifap);
}
#endif
SCTPDBG(SCTP_DEBUG_PCB4,
"Repairing ifn %p for ifa %p\n",
(void *)sctp_ifnp, (void *)sctp_ifap);
sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
}
SCTP_IPI_ADDR_WUNLOCK();
if (new_sctp_ifnp != NULL) {
SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
}
SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
return (sctp_ifap);
}
KASSERT(sctp_ifnp != NULL,
("sctp_add_addr_to_vrf: sctp_ifnp == NULL"));
KASSERT(sctp_ifap == NULL,
("sctp_add_addr_to_vrf: sctp_ifap (%p) != NULL", sctp_ifap));
sctp_ifap = new_sctp_ifap;
memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
sctp_ifap->ifn_p = sctp_ifnp;
atomic_add_int(&sctp_ifnp->refcount, 1);
sctp_ifap->vrf_id = vrf_id;
sctp_ifap->ifa = ifa;
memcpy(&sctp_ifap->address, addr, addr->sa_len);
sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
sctp_ifap->flags = ifa_flags;
#ifdef INET6
if (addr->sa_family == AF_INET6) {
sctp_gather_internal_ifa_flags(sctp_ifap);
}
#endif
switch (sctp_ifap->address.sa.sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin;
sin = &sctp_ifap->address.sin;
if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
(IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
sctp_ifap->src_is_loop = 1;
}
if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
sctp_ifap->src_is_priv = 1;
}
sctp_ifnp->num_v4++;
if (new_sctp_ifnp == NULL)
sctp_ifnp->registered_af = AF_INET;
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6;
sin6 = &sctp_ifap->address.sin6;
if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
(IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
sctp_ifap->src_is_loop = 1;
}
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
sctp_ifap->src_is_priv = 1;
}
sctp_ifnp->num_v6++;
if (new_sctp_ifnp == NULL)
sctp_ifnp->registered_af = AF_INET6;
break;
}
#endif
default:
break;
}
hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
if ((sctp_ifap->src_is_priv == 0) &&
(sctp_ifap->src_is_loop == 0)) {
sctp_ifap->src_is_glob = 1;
}
hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
sctp_ifap->refcount = 1;
LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
sctp_ifnp->ifa_count++;
vrf->total_ifa_count++;
atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
SCTP_IPI_ADDR_WUNLOCK();
if (new_sctp_ifnp != NULL) {
SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
}
if (dynamic_add) {
struct sctp_laddr *wi;
atomic_add_int(&sctp_ifap->refcount, 1);
wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
if (wi == NULL) {
SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
sctp_del_addr_from_vrf(vrf_id, addr, ifn, ifn_index);
return (NULL);
}
SCTP_INCR_LADDR_COUNT();
memset(wi, 0, sizeof(*wi));
(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
wi->ifa = sctp_ifap;
wi->action = SCTP_ADD_IP_ADDRESS;
SCTP_WQ_ADDR_LOCK();
LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
(struct sctp_inpcb *)NULL,
(struct sctp_tcb *)NULL,
(struct sctp_nets *)NULL);
SCTP_WQ_ADDR_UNLOCK();
} else {
sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
}
return (sctp_ifap);
}
void
sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
void *ifn, uint32_t ifn_index)
{
struct sctp_vrf *vrf;
struct sctp_ifa *sctp_ifap;
SCTP_IPI_ADDR_WLOCK();
vrf = sctp_find_vrf(vrf_id);
if (vrf == NULL) {
SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
SCTP_IPI_ADDR_WUNLOCK();
return;
}
#ifdef SCTP_DEBUG
SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
#endif
sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
if (sctp_ifap != NULL) {
if (sctp_ifap->ifn_p) {
if (ifn_index != sctp_ifap->ifn_p->ifn_index ||
ifn != sctp_ifap->ifn_p->ifn_p) {
SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d (%p) ifname:%s - ignoring delete\n",
sctp_ifap->ifn_p->ifn_index,
sctp_ifap->ifn_p->ifn_p,
sctp_ifap->ifn_p->ifn_name);
SCTP_IPI_ADDR_WUNLOCK();
return;
}
}
SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
sctp_ifap->localifa_flags &= ~SCTP_ADDR_VALID;
vrf->total_ifa_count--;
LIST_REMOVE(sctp_ifap, next_bucket);
sctp_remove_ifa_from_ifn(sctp_ifap);
}
#ifdef SCTP_DEBUG
else {
SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
ifn_index);
SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
}
#endif
SCTP_IPI_ADDR_WUNLOCK();
if (sctp_ifap != NULL) {
struct sctp_laddr *wi;
wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
if (wi == NULL) {
SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
sctp_free_ifa(sctp_ifap);
return;
}
SCTP_INCR_LADDR_COUNT();
memset(wi, 0, sizeof(*wi));
(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
wi->ifa = sctp_ifap;
wi->action = SCTP_DEL_IP_ADDRESS;
SCTP_WQ_ADDR_LOCK();
LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
(struct sctp_inpcb *)NULL,
(struct sctp_tcb *)NULL,
(struct sctp_nets *)NULL);
SCTP_WQ_ADDR_UNLOCK();
}
return;
}
static int
sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
{
int loopback_scope;
#if defined(INET)
int ipv4_local_scope, ipv4_addr_legal;
#endif
#if defined(INET6)
int local_scope, site_scope, ipv6_addr_legal;
#endif
struct sctp_vrf *vrf;
struct sctp_ifn *sctp_ifn;
struct sctp_ifa *sctp_ifa;
loopback_scope = stcb->asoc.scope.loopback_scope;
#if defined(INET)
ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
#endif
#if defined(INET6)
local_scope = stcb->asoc.scope.local_scope;
site_scope = stcb->asoc.scope.site_scope;
ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
#endif
SCTP_IPI_ADDR_RLOCK();
vrf = sctp_find_vrf(stcb->asoc.vrf_id);
if (vrf == NULL) {
SCTP_IPI_ADDR_RUNLOCK();
return (0);
}
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
if ((loopback_scope == 0) &&
SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
continue;
}
LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
(!sctp_is_addr_pending(stcb, sctp_ifa))) {
continue;
}
if (sctp_ifa->address.sa.sa_family != to->sa_family) {
continue;
}
switch (sctp_ifa->address.sa.sa_family) {
#ifdef INET
case AF_INET:
if (ipv4_addr_legal) {
struct sockaddr_in *sin,
*rsin;
sin = &sctp_ifa->address.sin;
rsin = (struct sockaddr_in *)to;
if ((ipv4_local_scope == 0) &&
IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
continue;
}
if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
&sin->sin_addr) != 0) {
continue;
}
if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
SCTP_IPI_ADDR_RUNLOCK();
return (1);
}
}
break;
#endif
#ifdef INET6
case AF_INET6:
if (ipv6_addr_legal) {
struct sockaddr_in6 *sin6,
*rsin6;
sin6 = &sctp_ifa->address.sin6;
rsin6 = (struct sockaddr_in6 *)to;
if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
&sin6->sin6_addr) != 0) {
continue;
}
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
if (local_scope == 0)
continue;
if (sin6->sin6_scope_id == 0) {
if (sa6_recoverscope(sin6) != 0)
continue;
}
}
if ((site_scope == 0) &&
(IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
continue;
}
if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
SCTP_IPI_ADDR_RUNLOCK();
return (1);
}
}
break;
#endif
default:
break;
}
}
}
} else {
struct sctp_laddr *laddr;
LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
continue;
}
if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
(!sctp_is_addr_pending(stcb, laddr->ifa))) {
continue;
}
if (laddr->ifa->address.sa.sa_family != to->sa_family) {
continue;
}
switch (to->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin, *rsin;
sin = &laddr->ifa->address.sin;
rsin = (struct sockaddr_in *)to;
if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
SCTP_IPI_ADDR_RUNLOCK();
return (1);
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6, *rsin6;
sin6 = &laddr->ifa->address.sin6;
rsin6 = (struct sockaddr_in6 *)to;
if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
SCTP_IPI_ADDR_RUNLOCK();
return (1);
}
break;
}
#endif
default:
break;
}
}
}
SCTP_IPI_ADDR_RUNLOCK();
return (0);
}
static struct sctp_tcb *
sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
{
uint16_t lport, rport;
struct sctppcbhead *ephead;
struct sctp_inpcb *inp;
struct sctp_laddr *laddr;
struct sctp_tcb *stcb;
struct sctp_nets *net;
if ((to == NULL) || (from == NULL)) {
return (NULL);
}
switch (to->sa_family) {
#ifdef INET
case AF_INET:
if (from->sa_family == AF_INET) {
lport = ((struct sockaddr_in *)to)->sin_port;
rport = ((struct sockaddr_in *)from)->sin_port;
} else {
return (NULL);
}
break;
#endif
#ifdef INET6
case AF_INET6:
if (from->sa_family == AF_INET6) {
lport = ((struct sockaddr_in6 *)to)->sin6_port;
rport = ((struct sockaddr_in6 *)from)->sin6_port;
} else {
return (NULL);
}
break;
#endif
default:
return (NULL);
}
ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
LIST_FOREACH(inp, ephead, sctp_hash) {
SCTP_INP_RLOCK(inp);
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if (lport != inp->sctp_lport) {
SCTP_INP_RUNLOCK(inp);
continue;
}
switch (to->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)to;
if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
&sin->sin_addr) != 0) {
SCTP_INP_RUNLOCK(inp);
continue;
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)to;
if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
&sin6->sin6_addr) != 0) {
SCTP_INP_RUNLOCK(inp);
continue;
}
break;
}
#endif
default:
SCTP_INP_RUNLOCK(inp);
continue;
}
if (inp->def_vrf_id != vrf_id) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
int match = 0;
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
if (laddr->ifa == NULL) {
SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
continue;
}
if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
continue;
}
if (laddr->ifa->address.sa.sa_family ==
to->sa_family) {
#ifdef INET
if (from->sa_family == AF_INET) {
struct sockaddr_in *intf_addr,
*sin;
intf_addr = &laddr->ifa->address.sin;
sin = (struct sockaddr_in *)to;
if (sin->sin_addr.s_addr ==
intf_addr->sin_addr.s_addr) {
match = 1;
break;
}
}
#endif
#ifdef INET6
if (from->sa_family == AF_INET6) {
struct sockaddr_in6 *intf_addr6;
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)
to;
intf_addr6 = &laddr->ifa->address.sin6;
if (SCTP6_ARE_ADDR_EQUAL(sin6,
intf_addr6)) {
match = 1;
break;
}
}
#endif
}
}
if (match == 0) {
SCTP_INP_RUNLOCK(inp);
continue;
}
}
stcb = LIST_FIRST(&inp->sctp_asoc_list);
if (stcb == NULL) {
SCTP_INP_RUNLOCK(inp);
continue;
}
SCTP_TCB_LOCK(stcb);
if (!sctp_does_stcb_own_this_addr(stcb, to)) {
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_RUNLOCK(inp);
continue;
}
if (stcb->rport != rport) {
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_RUNLOCK(inp);
continue;
}
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_RUNLOCK(inp);
continue;
}
if (!sctp_does_stcb_own_this_addr(stcb, to)) {
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_RUNLOCK(inp);
continue;
}
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
if (net->ro._l_addr.sa.sa_family != from->sa_family) {
continue;
}
switch (from->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin, *rsin;
sin = (struct sockaddr_in *)&net->ro._l_addr;
rsin = (struct sockaddr_in *)from;
if (sin->sin_addr.s_addr ==
rsin->sin_addr.s_addr) {
if (netp != NULL) {
*netp = net;
}
*inp_p = inp;
SCTP_INP_RUNLOCK(inp);
return (stcb);
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6, *rsin6;
sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
rsin6 = (struct sockaddr_in6 *)from;
if (SCTP6_ARE_ADDR_EQUAL(sin6,
rsin6)) {
if (netp != NULL) {
*netp = net;
}
*inp_p = inp;
SCTP_INP_RUNLOCK(inp);
return (stcb);
}
break;
}
#endif
default:
break;
}
}
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_RUNLOCK(inp);
}
return (NULL);
}
struct sctp_tcb *
sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
{
struct sctpasochead *head;
struct sctp_inpcb *inp;
struct sctp_tcb *stcb = NULL;
struct sctp_nets *net;
uint16_t rport;
inp = *inp_p;
switch (remote->sa_family) {
#ifdef INET
case AF_INET:
rport = (((struct sockaddr_in *)remote)->sin_port);
break;
#endif
#ifdef INET6
case AF_INET6:
rport = (((struct sockaddr_in6 *)remote)->sin6_port);
break;
#endif
default:
return (NULL);
}
if (locked_tcb) {
atomic_add_int(&locked_tcb->asoc.refcnt, 1);
SCTP_TCB_UNLOCK(locked_tcb);
}
SCTP_INP_INFO_RLOCK();
if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
if ((inp->sctp_socket) && SCTP_IS_LISTENING(inp)) {
stcb = sctp_tcb_special_locate(inp_p, remote, local,
netp, inp->def_vrf_id);
if ((stcb != NULL) && (locked_tcb == NULL)) {
SCTP_INP_DECR_REF(inp);
}
if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
SCTP_INP_RLOCK(locked_tcb->sctp_ep);
SCTP_TCB_LOCK(locked_tcb);
atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
}
SCTP_INP_INFO_RUNLOCK();
return (stcb);
} else {
SCTP_INP_WLOCK(inp);
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
goto null_return;
}
stcb = LIST_FIRST(&inp->sctp_asoc_list);
if (stcb == NULL) {
goto null_return;
}
SCTP_TCB_LOCK(stcb);
if (stcb->rport != rport) {
SCTP_TCB_UNLOCK(stcb);
goto null_return;
}
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
SCTP_TCB_UNLOCK(stcb);
goto null_return;
}
if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
SCTP_TCB_UNLOCK(stcb);
goto null_return;
}
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
#ifdef INVARIANTS
if (net == (TAILQ_NEXT(net, sctp_next))) {
panic("Corrupt net list");
}
#endif
if (net->ro._l_addr.sa.sa_family !=
remote->sa_family) {
continue;
}
switch (remote->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin,
*rsin;
sin = (struct sockaddr_in *)
&net->ro._l_addr;
rsin = (struct sockaddr_in *)remote;
if (sin->sin_addr.s_addr ==
rsin->sin_addr.s_addr) {
if (netp != NULL) {
*netp = net;
}
if (locked_tcb == NULL) {
SCTP_INP_DECR_REF(inp);
} else if (locked_tcb != stcb) {
SCTP_TCB_LOCK(locked_tcb);
}
if (locked_tcb) {
atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
}
SCTP_INP_WUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
return (stcb);
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6,
*rsin6;
sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
rsin6 = (struct sockaddr_in6 *)remote;
if (SCTP6_ARE_ADDR_EQUAL(sin6,
rsin6)) {
if (netp != NULL) {
*netp = net;
}
if (locked_tcb == NULL) {
SCTP_INP_DECR_REF(inp);
} else if (locked_tcb != stcb) {
SCTP_TCB_LOCK(locked_tcb);
}
if (locked_tcb) {
atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
}
SCTP_INP_WUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
return (stcb);
}
break;
}
#endif
default:
break;
}
}
SCTP_TCB_UNLOCK(stcb);
}
} else {
SCTP_INP_WLOCK(inp);
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
goto null_return;
}
head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
inp->sctp_hashmark)];
LIST_FOREACH(stcb, head, sctp_tcbhash) {
if (stcb->rport != rport) {
continue;
}
SCTP_TCB_LOCK(stcb);
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
SCTP_TCB_UNLOCK(stcb);
continue;
}
if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
SCTP_TCB_UNLOCK(stcb);
continue;
}
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
#ifdef INVARIANTS
if (net == (TAILQ_NEXT(net, sctp_next))) {
panic("Corrupt net list");
}
#endif
if (net->ro._l_addr.sa.sa_family !=
remote->sa_family) {
continue;
}
switch (remote->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin,
*rsin;
sin = (struct sockaddr_in *)
&net->ro._l_addr;
rsin = (struct sockaddr_in *)remote;
if (sin->sin_addr.s_addr ==
rsin->sin_addr.s_addr) {
if (netp != NULL) {
*netp = net;
}
if (locked_tcb == NULL) {
SCTP_INP_DECR_REF(inp);
} else if (locked_tcb != stcb) {
SCTP_TCB_LOCK(locked_tcb);
}
if (locked_tcb) {
atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
}
SCTP_INP_WUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
return (stcb);
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6,
*rsin6;
sin6 = (struct sockaddr_in6 *)
&net->ro._l_addr;
rsin6 = (struct sockaddr_in6 *)remote;
if (SCTP6_ARE_ADDR_EQUAL(sin6,
rsin6)) {
if (netp != NULL) {
*netp = net;
}
if (locked_tcb == NULL) {
SCTP_INP_DECR_REF(inp);
} else if (locked_tcb != stcb) {
SCTP_TCB_LOCK(locked_tcb);
}
if (locked_tcb) {
atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
}
SCTP_INP_WUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
return (stcb);
}
break;
}
#endif
default:
break;
}
}
SCTP_TCB_UNLOCK(stcb);
}
}
null_return:
if (locked_tcb) {
SCTP_TCB_LOCK(locked_tcb);
atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
}
SCTP_INP_WUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
return (NULL);
}
struct sctp_tcb *
sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
{
struct sctpasochead *head;
struct sctp_tcb *stcb;
uint32_t id;
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
SCTP_PRINTF("TSNH ep_associd0\n");
return (NULL);
}
id = (uint32_t)asoc_id;
head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
if (head == NULL) {
SCTP_PRINTF("TSNH ep_associd1\n");
return (NULL);
}
LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
if (stcb->asoc.assoc_id == id) {
if (inp != stcb->sctp_ep) {
SCTP_PRINTF("TSNH ep_associd2\n");
continue;
}
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
continue;
}
if (want_lock) {
SCTP_TCB_LOCK(stcb);
}
return (stcb);
}
}
return (NULL);
}
struct sctp_tcb *
sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
{
struct sctp_tcb *stcb;
SCTP_INP_RLOCK(inp);
stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
SCTP_INP_RUNLOCK(inp);
return (stcb);
}
static struct sctp_inpcb *
sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
uint16_t lport, uint32_t vrf_id)
{
struct sctp_inpcb *inp;
struct sctp_laddr *laddr;
#ifdef INET
struct sockaddr_in *sin;
#endif
#ifdef INET6
struct sockaddr_in6 *sin6;
struct sockaddr_in6 *intf_addr6;
#endif
int fnd;
#ifdef INET
sin = NULL;
#endif
#ifdef INET6
sin6 = NULL;
#endif
switch (nam->sa_family) {
#ifdef INET
case AF_INET:
sin = (struct sockaddr_in *)nam;
break;
#endif
#ifdef INET6
case AF_INET6:
sin6 = (struct sockaddr_in6 *)nam;
break;
#endif
default:
return (NULL);
}
if (head == NULL)
return (NULL);
LIST_FOREACH(inp, head, sctp_hash) {
SCTP_INP_RLOCK(inp);
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
(inp->sctp_lport == lport)) {
switch (nam->sa_family) {
#ifdef INET
case AF_INET:
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
SCTP_IPV6_V6ONLY(inp)) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
&sin->sin_addr) != 0) {
SCTP_INP_RUNLOCK(inp);
continue;
}
break;
#endif
#ifdef INET6
case AF_INET6:
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
&sin6->sin6_addr) != 0) {
SCTP_INP_RUNLOCK(inp);
continue;
}
break;
#endif
default:
break;
}
fnd = 0;
if (inp->def_vrf_id == vrf_id)
fnd = 1;
SCTP_INP_RUNLOCK(inp);
if (!fnd)
continue;
return (inp);
}
SCTP_INP_RUNLOCK(inp);
}
switch (nam->sa_family) {
#ifdef INET
case AF_INET:
if (sin->sin_addr.s_addr == INADDR_ANY) {
return (NULL);
}
break;
#endif
#ifdef INET6
case AF_INET6:
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
return (NULL);
}
break;
#endif
default:
break;
}
LIST_FOREACH(inp, head, sctp_hash) {
SCTP_INP_RLOCK(inp);
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
SCTP_INP_RUNLOCK(inp);
continue;
}
if (inp->sctp_lport != lport) {
SCTP_INP_RUNLOCK(inp);
continue;
}
fnd = 0;
if (inp->def_vrf_id == vrf_id)
fnd = 1;
if (!fnd) {
SCTP_INP_RUNLOCK(inp);
continue;
}
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
if (laddr->ifa == NULL) {
SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
__func__);
continue;
}
SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
(void *)laddr->ifa);
if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
continue;
}
if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
switch (nam->sa_family) {
#ifdef INET
case AF_INET:
if (sin->sin_addr.s_addr ==
laddr->ifa->address.sin.sin_addr.s_addr) {
SCTP_INP_RUNLOCK(inp);
return (inp);
}
break;
#endif
#ifdef INET6
case AF_INET6:
intf_addr6 = &laddr->ifa->address.sin6;
if (SCTP6_ARE_ADDR_EQUAL(sin6,
intf_addr6)) {
SCTP_INP_RUNLOCK(inp);
return (inp);
}
break;
#endif
}
}
}
SCTP_INP_RUNLOCK(inp);
}
return (NULL);
}
static struct sctp_inpcb *
sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
{
struct sctppcbhead *head;
struct sctp_inpcb *t_inp;
int fnd;
head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
SCTP_BASE_INFO(hashmark))];
LIST_FOREACH(t_inp, head, sctp_hash) {
if (t_inp->sctp_lport != lport) {
continue;
}
fnd = 0;
if (t_inp->def_vrf_id == vrf_id)
fnd = 1;
if (!fnd)
continue;
if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
SCTP_IPV6_V6ONLY(t_inp)) {
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
return (t_inp);
} else {
continue;
}
} else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
return (t_inp);
} else {
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
SCTP_IPV6_V6ONLY(inp)) {
continue;
}
}
return (t_inp);
}
return (NULL);
}
int
sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
{
struct sctppcbhead *head;
struct sctp_inpcb *tinp, *ninp;
SCTP_INP_INFO_WLOCK_ASSERT();
SCTP_INP_WLOCK_ASSERT(inp);
if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
return (-1);
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
return (0);
}
SCTP_INP_WUNLOCK(inp);
head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
SCTP_BASE_INFO(hashmark))];
LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
if (tinp->sctp_lport != inp->sctp_lport) {
continue;
}
if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
continue;
}
if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
continue;
}
if (SCTP_IS_LISTENING(tinp)) {
continue;
}
SCTP_INP_WLOCK(tinp);
LIST_REMOVE(tinp, sctp_hash);
head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
LIST_INSERT_HEAD(head, tinp, sctp_hash);
SCTP_INP_WUNLOCK(tinp);
}
SCTP_INP_WLOCK(inp);
LIST_REMOVE(inp, sctp_hash);
inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
LIST_INSERT_HEAD(head, inp, sctp_hash);
return (0);
}
struct sctp_inpcb *
sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
uint32_t vrf_id)
{
struct sctp_inpcb *inp;
struct sctppcbhead *head;
int lport;
unsigned int i;
#ifdef INET
struct sockaddr_in *sin;
#endif
#ifdef INET6
struct sockaddr_in6 *sin6;
#endif
switch (nam->sa_family) {
#ifdef INET
case AF_INET:
sin = (struct sockaddr_in *)nam;
lport = sin->sin_port;
break;
#endif
#ifdef INET6
case AF_INET6:
sin6 = (struct sockaddr_in6 *)nam;
lport = sin6->sin6_port;
break;
#endif
default:
return (NULL);
}
if (have_lock == 0) {
SCTP_INP_INFO_RLOCK();
}
head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
SCTP_BASE_INFO(hashmark))];
inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
if (inp == NULL && find_tcp_pool) {
for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
if (inp) {
break;
}
}
}
if (inp) {
SCTP_INP_INCR_REF(inp);
}
if (have_lock == 0) {
SCTP_INP_INFO_RUNLOCK();
}
return (inp);
}
struct sctp_tcb *
sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
uint32_t vrf_id)
{
struct sctp_inpcb *inp = NULL;
struct sctp_tcb *stcb;
SCTP_INP_INFO_RLOCK();
if (find_tcp_pool) {
if (inp_p != NULL) {
stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
vrf_id);
} else {
stcb = sctp_tcb_special_locate(&inp, from, to, netp,
vrf_id);
}
if (stcb != NULL) {
SCTP_INP_INFO_RUNLOCK();
return (stcb);
}
}
inp = sctp_pcb_findep(to, 0, 1, vrf_id);
if (inp_p != NULL) {
*inp_p = inp;
}
SCTP_INP_INFO_RUNLOCK();
if (inp == NULL) {
return (NULL);
}
if (inp_p != NULL) {
stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
NULL);
} else {
stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
NULL);
}
return (stcb);
}
static struct sctp_tcb *
sctp_findassociation_special_addr(struct mbuf *m, int offset,
struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
struct sockaddr *dst)
{
struct sctp_paramhdr *phdr, param_buf;
#if defined(INET) || defined(INET6)
struct sctp_tcb *stcb;
uint16_t ptype;
#endif
uint16_t plen;
#ifdef INET
struct sockaddr_in sin4;
#endif
#ifdef INET6
struct sockaddr_in6 sin6;
#endif
#ifdef INET
memset(&sin4, 0, sizeof(sin4));
sin4.sin_len = sizeof(sin4);
sin4.sin_family = AF_INET;
sin4.sin_port = sh->src_port;
#endif
#ifdef INET6
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_len = sizeof(sin6);
sin6.sin6_family = AF_INET6;
sin6.sin6_port = sh->src_port;
#endif
offset += sizeof(struct sctp_init_chunk);
phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
while (phdr != NULL) {
#if defined(INET) || defined(INET6)
ptype = ntohs(phdr->param_type);
#endif
plen = ntohs(phdr->param_length);
if (plen == 0) {
break;
}
#ifdef INET
if (ptype == SCTP_IPV4_ADDRESS &&
plen == sizeof(struct sctp_ipv4addr_param)) {
struct sctp_ipv4addr_param ip4_param, *p4;
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&ip4_param, sizeof(ip4_param));
if (phdr == NULL) {
return (NULL);
}
p4 = (struct sctp_ipv4addr_param *)phdr;
memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
stcb = sctp_findassociation_ep_addr(inp_p,
(struct sockaddr *)&sin4, netp, dst, NULL);
if (stcb != NULL) {
return (stcb);
}
}
#endif
#ifdef INET6
if (ptype == SCTP_IPV6_ADDRESS &&
plen == sizeof(struct sctp_ipv6addr_param)) {
struct sctp_ipv6addr_param ip6_param, *p6;
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&ip6_param, sizeof(ip6_param));
if (phdr == NULL) {
return (NULL);
}
p6 = (struct sctp_ipv6addr_param *)phdr;
memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
stcb = sctp_findassociation_ep_addr(inp_p,
(struct sockaddr *)&sin6, netp, dst, NULL);
if (stcb != NULL) {
return (stcb);
}
}
#endif
offset += SCTP_SIZE32(plen);
phdr = sctp_get_next_param(m, offset, ¶m_buf,
sizeof(param_buf));
}
return (NULL);
}
static struct sctp_tcb *
sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
{
struct sctpasochead *head;
struct sctp_nets *net;
struct sctp_tcb *stcb;
SCTP_INP_INFO_RLOCK();
head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
SCTP_BASE_INFO(hashasocmark))];
LIST_FOREACH(stcb, head, sctp_asocs) {
SCTP_INP_RLOCK(stcb->sctp_ep);
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
SCTP_INP_RUNLOCK(stcb->sctp_ep);
continue;
}
if (stcb->sctp_ep->def_vrf_id != vrf_id) {
SCTP_INP_RUNLOCK(stcb->sctp_ep);
continue;
}
SCTP_TCB_LOCK(stcb);
SCTP_INP_RUNLOCK(stcb->sctp_ep);
if (stcb->asoc.my_vtag == vtag) {
if (stcb->rport != rport) {
SCTP_TCB_UNLOCK(stcb);
continue;
}
if (stcb->sctp_ep->sctp_lport != lport) {
SCTP_TCB_UNLOCK(stcb);
continue;
}
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
SCTP_TCB_UNLOCK(stcb);
continue;
}
if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
SCTP_TCB_UNLOCK(stcb);
continue;
}
if (remote_tag) {
if (stcb->asoc.peer_vtag == remote_tag) {
goto conclusive;
}
}
if (skip_src_check) {
conclusive:
if (from) {
*netp = sctp_findnet(stcb, from);
} else {
*netp = NULL;
}
if (inp_p)
*inp_p = stcb->sctp_ep;
SCTP_INP_INFO_RUNLOCK();
return (stcb);
}
net = sctp_findnet(stcb, from);
if (net) {
*netp = net;
SCTP_STAT_INCR(sctps_vtagexpress);
*inp_p = stcb->sctp_ep;
SCTP_INP_INFO_RUNLOCK();
return (stcb);
} else {
SCTP_STAT_INCR(sctps_vtagbogus);
}
}
SCTP_TCB_UNLOCK(stcb);
}
SCTP_INP_INFO_RUNLOCK();
return (NULL);
}
struct sctp_tcb *
sctp_findassociation_addr(struct mbuf *m, int offset,
struct sockaddr *src, struct sockaddr *dst,
struct sctphdr *sh, struct sctp_chunkhdr *ch,
struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
{
struct sctp_tcb *stcb;
struct sctp_inpcb *inp;
if (sh->v_tag) {
stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
if (stcb) {
return (stcb);
}
}
if (inp_p) {
stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
1, vrf_id);
inp = *inp_p;
} else {
stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
1, vrf_id);
}
SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
if (stcb == NULL && inp) {
if ((ch->chunk_type == SCTP_INITIATION) ||
(ch->chunk_type == SCTP_INITIATION_ACK)) {
if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
if (inp_p) {
*inp_p = NULL;
}
return (NULL);
}
stcb = sctp_findassociation_special_addr(m,
offset, sh, &inp, netp, dst);
if (inp_p != NULL) {
*inp_p = inp;
}
}
}
SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
return (stcb);
}
struct sctp_tcb *
sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
struct sockaddr *dst, struct sctphdr *sh,
struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
{
struct sctp_tcb *stcb;
union sctp_sockstore remote_store;
struct sctp_paramhdr param_buf, *phdr;
int ptype;
int zero_address = 0;
#ifdef INET
struct sockaddr_in *sin;
#endif
#ifdef INET6
struct sockaddr_in6 *sin6;
#endif
memset(&remote_store, 0, sizeof(remote_store));
phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
¶m_buf, sizeof(struct sctp_paramhdr));
if (phdr == NULL) {
SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
__func__);
return NULL;
}
ptype = (int)((uint32_t)ntohs(phdr->param_type));
switch (ptype) {
#ifdef INET6
case SCTP_IPV6_ADDRESS:
{
struct sctp_ipv6addr_param *p6, p6_buf;
if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
return NULL;
}
p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
offset + sizeof(struct sctp_asconf_chunk),
&p6_buf.ph, sizeof(p6_buf));
if (p6 == NULL) {
SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
__func__);
return (NULL);
}
sin6 = &remote_store.sin6;
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_port = sh->src_port;
memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
zero_address = 1;
break;
}
#endif
#ifdef INET
case SCTP_IPV4_ADDRESS:
{
struct sctp_ipv4addr_param *p4, p4_buf;
if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
return NULL;
}
p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
offset + sizeof(struct sctp_asconf_chunk),
&p4_buf.ph, sizeof(p4_buf));
if (p4 == NULL) {
SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
__func__);
return (NULL);
}
sin = &remote_store.sin;
sin->sin_family = AF_INET;
sin->sin_len = sizeof(*sin);
sin->sin_port = sh->src_port;
memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
if (sin->sin_addr.s_addr == INADDR_ANY)
zero_address = 1;
break;
}
#endif
default:
return NULL;
}
if (zero_address) {
stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
if (stcb != NULL) {
SCTP_INP_DECR_REF(*inp_p);
}
} else {
stcb = sctp_findassociation_ep_addr(inp_p,
&remote_store.sa, netp,
dst, NULL);
}
return (stcb);
}
int
sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
{
int i, error;
struct sctp_inpcb *inp;
struct sctp_pcb *m;
struct timeval time;
sctp_sharedkey_t *null_key;
error = 0;
SCTP_INP_INFO_WLOCK();
inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
if (inp == NULL) {
SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
SCTP_INP_INFO_WUNLOCK();
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
return (ENOBUFS);
}
memset(inp, 0, sizeof(*inp));
inp->sctp_socket = so;
inp->ip_inp.inp.inp_socket = so;
inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
#ifdef INET6
if (INP_SOCKAF(so) == AF_INET6) {
if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
}
if (MODULE_GLOBAL(ip6_v6only)) {
inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
}
}
#endif
inp->sctp_associd_counter = 1;
inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
inp->sctp_frag_point = 0;
inp->max_cwnd = 0;
inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
inp->idata_supported = 0;
inp->rcv_edmid = SCTP_EDMID_NONE;
inp->fibnum = so->so_fibnum;
inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
if (inp->sctp_asocidhash == NULL) {
crfree(inp->ip_inp.inp.inp_cred);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
SCTP_INP_INFO_WUNLOCK();
return (ENOBUFS);
}
SCTP_INCR_EP_COUNT();
inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
SCTP_INP_INFO_WUNLOCK();
so->so_pcb = (caddr_t)inp;
if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
SCTP_PCB_FLAGS_UNBOUND);
} else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
SCTP_PCB_FLAGS_UNBOUND);
SOCK_LOCK(so);
SCTP_CLEAR_SO_NBIO(so);
SOCK_UNLOCK(so);
} else {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
so->so_pcb = NULL;
crfree(inp->ip_inp.inp.inp_cred);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
return (EOPNOTSUPP);
}
if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
} else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
} else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
}
inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
&inp->sctp_hashmark);
if (inp->sctp_tcbhash == NULL) {
SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
so->so_pcb = NULL;
crfree(inp->ip_inp.inp.inp_cred);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
return (ENOBUFS);
}
inp->def_vrf_id = vrf_id;
SCTP_INP_INFO_WLOCK();
SCTP_INP_LOCK_INIT(inp);
rw_init_flags(&inp->ip_inp.inp.inp_lock, "sctpinp",
RW_RECURSE | RW_DUPOK);
SCTP_INP_READ_LOCK_INIT(inp);
SCTP_ASOC_CREATE_LOCK_INIT(inp);
SCTP_INP_WLOCK(inp);
LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
SCTP_INP_INFO_WUNLOCK();
TAILQ_INIT(&inp->read_queue);
LIST_INIT(&inp->sctp_addr_list);
LIST_INIT(&inp->sctp_asoc_list);
#ifdef SCTP_TRACK_FREED_ASOCS
LIST_INIT(&inp->sctp_asoc_free_list);
#endif
SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
m = &inp->sctp_ep;
m->sctp_timeoutticks[SCTP_TIMER_SEND] = sctp_secs_to_ticks(SCTP_SEND_SEC);
m->sctp_timeoutticks[SCTP_TIMER_INIT] = sctp_secs_to_ticks(SCTP_INIT_SEC);
m->sctp_timeoutticks[SCTP_TIMER_RECV] = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
m->sctp_timeoutticks[SCTP_TIMER_PMTU] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
m->default_mtu = 0;
m->adaptation_layer_indicator = 0;
m->adaptation_layer_indicator_provided = 0;
m->random_counter = 1;
m->store_at = SCTP_SIGNATURE_SIZE;
SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
sctp_fill_random_store(m);
m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
sizeof(struct sctp_state_cookie);
m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
(void)SCTP_GETTIME_TIMEVAL(&time);
m->time_of_secret_change = time.tv_sec;
for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
m->secret_key[0][i] = sctp_select_initial_TSN(m);
}
sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
m->def_cookie_life = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
m->local_hmacs = sctp_default_supported_hmaclist();
m->local_auth_chunks = sctp_alloc_chunklist();
if (inp->asconf_supported) {
sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
}
m->default_dscp = 0;
#ifdef INET6
m->default_flowlabel = 0;
#endif
m->port = 0;
LIST_INIT(&m->shared_keys);
null_key = sctp_alloc_sharedkey();
sctp_insert_sharedkey(&m->shared_keys, null_key);
SCTP_INP_WUNLOCK(inp);
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 12);
#endif
return (error);
}
void
sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
struct sctp_tcb *stcb)
{
struct sctp_nets *net;
uint16_t lport, rport;
struct sctppcbhead *head;
struct sctp_laddr *laddr, *oladdr;
atomic_add_int(&stcb->asoc.refcnt, 1);
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_INFO_WLOCK();
SCTP_INP_WLOCK(old_inp);
SCTP_INP_WLOCK(new_inp);
SCTP_TCB_LOCK(stcb);
atomic_subtract_int(&stcb->asoc.refcnt, 1);
#ifdef INET6
if (old_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
new_inp->ip_inp.inp.inp_flags |= old_inp->ip_inp.inp.inp_flags & INP_CONTROLOPTS;
if (old_inp->ip_inp.inp.in6p_outputopts) {
new_inp->ip_inp.inp.in6p_outputopts = ip6_copypktopts(old_inp->ip_inp.inp.in6p_outputopts, M_NOWAIT);
}
}
#endif
#if defined(INET) && defined(INET6)
else
#endif
#ifdef INET
{
new_inp->ip_inp.inp.inp_ip_tos = old_inp->ip_inp.inp.inp_ip_tos;
new_inp->ip_inp.inp.inp_ip_ttl = old_inp->ip_inp.inp.inp_ip_ttl;
}
#endif
new_inp->sctp_ep.time_of_secret_change =
old_inp->sctp_ep.time_of_secret_change;
memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
sizeof(old_inp->sctp_ep.secret_key));
new_inp->sctp_ep.current_secret_number =
old_inp->sctp_ep.current_secret_number;
new_inp->sctp_ep.last_secret_number =
old_inp->sctp_ep.last_secret_number;
new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
stcb->sctp_socket = new_inp->sctp_socket;
stcb->sctp_ep = new_inp;
lport = new_inp->sctp_lport = old_inp->sctp_lport;
rport = stcb->rport;
LIST_REMOVE(stcb, sctp_tcbhash);
LIST_REMOVE(stcb, sctp_tcblist);
if (stcb->asoc.in_asocid_hash) {
LIST_REMOVE(stcb, sctp_tcbasocidhash);
}
head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
LIST_INSERT_HEAD(head, new_inp, sctp_hash);
new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
if (stcb->asoc.in_asocid_hash) {
struct sctpasochead *lhd;
lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
new_inp->hashasocidmark)];
LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
}
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
stcb, net);
}
SCTP_INP_INFO_WUNLOCK();
if (new_inp->sctp_tcbhash != NULL) {
SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
new_inp->sctp_tcbhash = NULL;
}
if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
if (laddr == NULL) {
SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
continue;
}
SCTP_INCR_LADDR_COUNT();
memset(laddr, 0, sizeof(*laddr));
(void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
laddr->ifa = oladdr->ifa;
atomic_add_int(&laddr->ifa->refcount, 1);
LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
sctp_nxt_addr);
new_inp->laddr_count++;
if (oladdr == stcb->asoc.last_used_address) {
stcb->asoc.last_used_address = laddr;
}
}
}
if (stcb->asoc.dack_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
stcb->asoc.dack_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (stcb->asoc.asconf_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
stcb->asoc.asconf_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (stcb->asoc.strreset_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
stcb->asoc.strreset_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (stcb->asoc.shut_guard_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
stcb->asoc.shut_guard_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (stcb->asoc.autoclose_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
stcb->asoc.autoclose_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (stcb->asoc.delete_prim_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
stcb->asoc.delete_prim_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
if (net->pmtu_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
net->pmtu_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (net->hb_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
net->hb_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
if (net->rxt_timer.ep == old_inp) {
SCTP_INP_DECR_REF(old_inp);
net->rxt_timer.ep = new_inp;
SCTP_INP_INCR_REF(new_inp);
}
}
SCTP_INP_WUNLOCK(new_inp);
SCTP_INP_WUNLOCK(old_inp);
}
static int
sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
{
struct sctp_laddr *laddr;
laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
if (laddr == NULL) {
SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
return (EINVAL);
}
SCTP_INCR_LADDR_COUNT();
memset(laddr, 0, sizeof(*laddr));
(void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
laddr->ifa = ifa;
laddr->action = act;
atomic_add_int(&ifa->refcount, 1);
LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
return (0);
}
static void
sctp_remove_laddr(struct sctp_laddr *laddr)
{
LIST_REMOVE(laddr, sctp_nxt_addr);
sctp_free_ifa(laddr->ifa);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
SCTP_DECR_LADDR_COUNT();
}
int
sctp_inpcb_bind_locked(struct sctp_inpcb *inp, struct sockaddr *addr,
struct sctp_ifa *sctp_ifap, struct thread *td)
{
struct sctppcbhead *head;
struct sctp_inpcb *inp_tmp;
struct inpcb *ip_inp;
int port_reuse_active = 0;
int bindall;
uint16_t lport;
int error;
uint32_t vrf_id;
KASSERT(td != NULL, ("%s: null thread", __func__));
error = 0;
lport = 0;
bindall = 1;
ip_inp = &inp->ip_inp.inp;
SCTP_INP_INFO_WLOCK_ASSERT();
SCTP_INP_WLOCK_ASSERT(inp);
#ifdef SCTP_DEBUG
if (addr) {
SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
ntohs(((struct sockaddr_in *)addr)->sin_port));
SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
}
#endif
if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
if (addr != NULL) {
switch (addr->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin;
if (SCTP_IPV6_V6ONLY(inp)) {
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
if (addr->sa_len != sizeof(*sin)) {
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
sin = (struct sockaddr_in *)addr;
lport = sin->sin_port;
if ((error = prison_local_ip4(td->td_ucred, &sin->sin_addr)) != 0) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
if (sin->sin_addr.s_addr != INADDR_ANY) {
bindall = 0;
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)addr;
if (addr->sa_len != sizeof(*sin6)) {
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
lport = sin6->sin6_port;
if ((error = prison_local_ip6(td->td_ucred, &sin6->sin6_addr,
(SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
bindall = 0;
if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
}
sin6->sin6_scope_id = 0;
break;
}
#endif
default:
error = EAFNOSUPPORT;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
}
vrf_id = inp->def_vrf_id;
if (lport) {
if (ntohs(lport) < IPPORT_RESERVED &&
(error = priv_check(td, PRIV_NETINET_RESERVEDPORT)) != 0) {
goto out;
}
SCTP_INP_INCR_REF(inp);
SCTP_INP_WUNLOCK(inp);
if (bindall) {
vrf_id = inp->def_vrf_id;
inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
if (inp_tmp != NULL) {
SCTP_INP_DECR_REF(inp_tmp);
if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
(sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
port_reuse_active = 1;
goto continue_anyway;
}
SCTP_INP_WLOCK(inp);
SCTP_INP_DECR_REF(inp);
error = EADDRINUSE;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
} else {
inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
if (inp_tmp != NULL) {
SCTP_INP_DECR_REF(inp_tmp);
if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
(sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
port_reuse_active = 1;
goto continue_anyway;
}
SCTP_INP_WLOCK(inp);
SCTP_INP_DECR_REF(inp);
error = EADDRINUSE;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
}
continue_anyway:
SCTP_INP_WLOCK(inp);
SCTP_INP_DECR_REF(inp);
if (bindall) {
if ((port_reuse_active == 0) &&
(inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
(sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
port_reuse_active = 1;
} else {
error = EADDRINUSE;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
}
}
} else {
uint16_t first, last, candidate;
uint16_t count;
if (ip_inp->inp_flags & INP_HIGHPORT) {
first = MODULE_GLOBAL(ipport_hifirstauto);
last = MODULE_GLOBAL(ipport_hilastauto);
} else if (ip_inp->inp_flags & INP_LOWPORT) {
if ((error = priv_check(td, PRIV_NETINET_RESERVEDPORT)) != 0) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
first = MODULE_GLOBAL(ipport_lowfirstauto);
last = MODULE_GLOBAL(ipport_lowlastauto);
} else {
first = MODULE_GLOBAL(ipport_firstauto);
last = MODULE_GLOBAL(ipport_lastauto);
}
if (first > last) {
uint16_t temp;
temp = first;
first = last;
last = temp;
}
count = last - first + 1;
candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
for (;;) {
if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
lport = htons(candidate);
break;
}
if (--count == 0) {
error = EADDRINUSE;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
if (candidate == last)
candidate = first;
else
candidate = candidate + 1;
}
}
if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
if (bindall) {
inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
} else {
sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
}
if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
} else {
sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
}
if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
} else {
sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
}
if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
} else {
sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
}
} else {
struct sctp_ifa *ifa;
union sctp_sockstore store;
memset(&store, 0, sizeof(store));
switch (addr->sa_family) {
#ifdef INET
case AF_INET:
memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
store.sin.sin_port = 0;
break;
#endif
#ifdef INET6
case AF_INET6:
memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
store.sin6.sin6_port = 0;
break;
#endif
default:
break;
}
if (sctp_ifap != NULL) {
ifa = sctp_ifap;
} else {
ifa = sctp_find_ifa_by_addr(&store.sa,
vrf_id, SCTP_ADDR_NOT_LOCKED);
}
if (ifa == NULL) {
error = EADDRNOTAVAIL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
#ifdef INET6
if (addr->sa_family == AF_INET6) {
if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
error = EADDRNOTAVAIL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
goto out;
}
}
#endif
inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
if (error != 0)
goto out;
inp->laddr_count++;
}
if (port_reuse_active) {
head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
} else {
head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
}
LIST_INSERT_HEAD(head, inp, sctp_hash);
SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
(void *)head, ntohs(lport), port_reuse_active);
inp->sctp_lport = lport;
KASSERT((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) != 0,
("%s: inp %p is already bound", __func__, inp));
inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
out:
return (error);
}
int
sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
struct sctp_ifa *sctp_ifap, struct thread *td)
{
struct sctp_inpcb *inp;
int error;
inp = so->so_pcb;
SCTP_INP_INFO_WLOCK();
SCTP_INP_WLOCK(inp);
error = sctp_inpcb_bind_locked(inp, addr, sctp_ifap, td);
SCTP_INP_WUNLOCK(inp);
SCTP_INP_INFO_WUNLOCK();
return (error);
}
static void
sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
{
struct sctp_iterator *it, *nit;
it = sctp_it_ctl.cur_it;
if (it && (it->vn != curvnet)) {
return;
}
if (it && (it->inp == inp)) {
if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
} else {
sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
}
}
SCTP_IPI_ITERATOR_WQ_LOCK();
TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
if (it->vn != curvnet) {
continue;
}
if (it->inp == inp) {
if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
it, sctp_nxt_itr);
if (it->function_atend != NULL) {
(*it->function_atend) (it->pointer, it->val);
}
SCTP_FREE(it, SCTP_M_ITER);
} else {
it->inp = LIST_NEXT(it->inp, sctp_list);
if (it->inp) {
SCTP_INP_INCR_REF(it->inp);
}
}
SCTP_INP_DECR_REF(inp);
}
}
SCTP_IPI_ITERATOR_WQ_UNLOCK();
}
void
sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
{
struct sctp_tcb *stcb, *nstcb;
struct sctp_laddr *laddr, *nladdr;
struct inpcb *ip_pcb;
struct socket *so;
int being_refed = 0;
struct sctp_queued_to_read *sq, *nsq;
int cnt;
sctp_sharedkey_t *shared_key, *nshared_key;
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 0);
#endif
SCTP_ITERATOR_LOCK();
sctp_iterator_inp_being_freed(inp);
SCTP_ITERATOR_UNLOCK();
SCTP_ASOC_CREATE_LOCK(inp);
SCTP_INP_INFO_WLOCK();
SCTP_INP_WLOCK(inp);
so = inp->sctp_socket;
KASSERT((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) != 0,
("%s: inp %p still has socket", __func__, inp));
KASSERT((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0,
("%s: double free of inp %p", __func__, inp));
if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
}
sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
if (inp->control) {
sctp_m_freem(inp->control);
inp->control = NULL;
}
if (inp->pkt) {
sctp_m_freem(inp->pkt);
inp->pkt = NULL;
}
ip_pcb = &inp->ip_inp.inp;
if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
int cnt_in_sd;
cnt_in_sd = 0;
LIST_FOREACH_SAFE(stcb, &inp->sctp_asoc_list, sctp_tcblist, nstcb) {
SCTP_TCB_LOCK(stcb);
stcb->sctp_socket = NULL;
SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_CLOSED_SOCKET);
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
cnt_in_sd++;
if (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
}
SCTP_TCB_UNLOCK(stcb);
continue;
}
if (((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
(SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) &&
(stcb->asoc.total_output_queue_size == 0)) {
if (sctp_free_assoc(inp, stcb, SCTP_PCBFREE_NOFORCE,
SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
cnt_in_sd++;
}
continue;
}
if ((stcb->asoc.size_on_reasm_queue > 0) ||
(stcb->asoc.size_on_all_streams > 0) ||
((so != NULL) && (SCTP_SBAVAIL(&so->so_rcv) > 0))) {
struct mbuf *op_err;
op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
SCTP_STAT_INCR_COUNTER32(sctps_aborted);
if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
(SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
SCTP_STAT_DECR_GAUGE32(sctps_currestab);
}
if (sctp_free_assoc(inp, stcb,
SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
cnt_in_sd++;
}
continue;
} else if (TAILQ_EMPTY(&stcb->asoc.send_queue) &&
TAILQ_EMPTY(&stcb->asoc.sent_queue) &&
(stcb->asoc.stream_queue_cnt == 0)) {
if ((*stcb->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (stcb, &stcb->asoc)) {
goto abort_anyway;
}
if ((SCTP_GET_STATE(stcb) != SCTP_STATE_SHUTDOWN_SENT) &&
(SCTP_GET_STATE(stcb) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
struct sctp_nets *netp;
if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
(SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
SCTP_STAT_DECR_GAUGE32(sctps_currestab);
}
SCTP_SET_STATE(stcb, SCTP_STATE_SHUTDOWN_SENT);
sctp_stop_timers_for_shutdown(stcb);
if (stcb->asoc.alternate) {
netp = stcb->asoc.alternate;
} else {
netp = stcb->asoc.primary_destination;
}
sctp_send_shutdown(stcb, netp);
sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb,
netp);
sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, NULL);
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
}
} else {
SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
if ((*stcb->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (stcb, &stcb->asoc)) {
SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_PARTIAL_MSG_LEFT);
}
if (TAILQ_EMPTY(&stcb->asoc.send_queue) &&
TAILQ_EMPTY(&stcb->asoc.sent_queue) &&
(stcb->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
struct mbuf *op_err;
abort_anyway:
op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
SCTP_STAT_INCR_COUNTER32(sctps_aborted);
if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
(SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
SCTP_STAT_DECR_GAUGE32(sctps_currestab);
}
if (sctp_free_assoc(inp, stcb,
SCTP_PCBFREE_NOFORCE,
SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
cnt_in_sd++;
}
continue;
} else {
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
}
}
cnt_in_sd++;
SCTP_TCB_UNLOCK(stcb);
}
if (cnt_in_sd) {
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 2);
#endif
inp->sctp_socket = NULL;
SCTP_INP_WUNLOCK(inp);
SCTP_ASOC_CREATE_UNLOCK(inp);
SCTP_INP_INFO_WUNLOCK();
return;
}
}
inp->sctp_socket = NULL;
if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
LIST_REMOVE(inp, sctp_hash);
inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
}
cnt = 0;
LIST_FOREACH_SAFE(stcb, &inp->sctp_asoc_list, sctp_tcblist, nstcb) {
SCTP_TCB_LOCK(stcb);
if (immediate != SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
stcb->sctp_socket = NULL;
SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_CLOSED_SOCKET);
}
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
if (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
}
cnt++;
SCTP_TCB_UNLOCK(stcb);
continue;
}
if ((SCTP_GET_STATE(stcb) != SCTP_STATE_COOKIE_WAIT) &&
((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
struct mbuf *op_err;
op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
SCTP_STAT_INCR_COUNTER32(sctps_aborted);
} else if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
cnt++;
SCTP_TCB_UNLOCK(stcb);
continue;
}
if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
(SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
SCTP_STAT_DECR_GAUGE32(sctps_currestab);
}
if (sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE,
SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
cnt++;
}
}
if (cnt) {
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 3);
#endif
SCTP_INP_WUNLOCK(inp);
SCTP_ASOC_CREATE_UNLOCK(inp);
SCTP_INP_INFO_WUNLOCK();
return;
}
if (SCTP_INP_LOCK_CONTENDED(inp))
being_refed++;
if (SCTP_INP_READ_CONTENDED(inp))
being_refed++;
if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
being_refed++;
if ((inp->refcount) ||
(being_refed) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 4);
#endif
sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
SCTP_INP_WUNLOCK(inp);
SCTP_ASOC_CREATE_UNLOCK(inp);
SCTP_INP_INFO_WUNLOCK();
return;
}
inp->sctp_ep.signature_change.type = 0;
inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
LIST_REMOVE(inp, sctp_list);
SCTP_INP_WUNLOCK(inp);
SCTP_ASOC_CREATE_UNLOCK(inp);
SCTP_INP_INFO_WUNLOCK();
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 5);
#endif
if ((inp->sctp_asocidhash) != NULL) {
SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
inp->sctp_asocidhash = NULL;
}
TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
if (sq->length)
SCTP_STAT_INCR(sctps_left_abandon);
TAILQ_REMOVE(&inp->read_queue, sq, next);
sctp_free_remote_addr(sq->whoFrom);
if (so)
SCTP_SB_DECR(&so->so_rcv, sq->length);
if (sq->data) {
sctp_m_freem(sq->data);
sq->data = NULL;
}
sctp_free_a_readq(NULL, sq);
}
if (ip_pcb->inp_options) {
(void)sctp_m_free(ip_pcb->inp_options);
ip_pcb->inp_options = 0;
}
#ifdef INET6
if (ip_pcb->inp_vflag & INP_IPV6) {
ip6_freepcbopts(ip_pcb->in6p_outputopts);
}
#endif
ip_pcb->inp_vflag = 0;
if (inp->sctp_ep.local_auth_chunks != NULL)
sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
if (inp->sctp_ep.local_hmacs != NULL)
sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
LIST_REMOVE(shared_key, next);
sctp_free_sharedkey(shared_key);
}
LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
sctp_remove_laddr(laddr);
}
#ifdef SCTP_TRACK_FREED_ASOCS
LIST_FOREACH_SAFE(stcb, &inp->sctp_asoc_free_list, sctp_tcblist, nstcb) {
LIST_REMOVE(stcb, sctp_tcblist);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
SCTP_DECR_ASOC_COUNT();
}
#endif
if (inp->sctp_tcbhash != NULL) {
SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
inp->sctp_tcbhash = NULL;
}
crfree(inp->ip_inp.inp.inp_cred);
INP_LOCK_DESTROY(&inp->ip_inp.inp);
SCTP_INP_LOCK_DESTROY(inp);
SCTP_INP_READ_LOCK_DESTROY(inp);
SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
SCTP_DECR_EP_COUNT();
}
struct sctp_nets *
sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
{
struct sctp_nets *net;
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
return (net);
}
return (NULL);
}
int
sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
{
struct sctp_ifa *sctp_ifa;
sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
if (sctp_ifa) {
return (1);
} else {
return (0);
}
}
int
sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
struct sctp_nets **netp, uint16_t port, int set_scope, int from)
{
struct sctp_nets *net, *netfirst;
int addr_inscope;
SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
from);
SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
netfirst = sctp_findnet(stcb, newaddr);
if (netfirst) {
if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
netfirst->dest_state = (SCTP_ADDR_REACHABLE |
SCTP_ADDR_UNCONFIRMED);
} else {
netfirst->dest_state = SCTP_ADDR_REACHABLE;
}
return (0);
}
addr_inscope = 1;
switch (newaddr->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)newaddr;
if (sin->sin_addr.s_addr == 0) {
return (-1);
}
memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
sin->sin_len = sizeof(struct sockaddr_in);
if (set_scope) {
if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
stcb->asoc.scope.ipv4_local_scope = 1;
}
} else {
if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
(stcb->asoc.scope.ipv4_local_scope == 0)) {
addr_inscope = 0;
}
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)newaddr;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
return (-1);
}
sin6->sin6_len = sizeof(struct sockaddr_in6);
if (set_scope) {
if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
stcb->asoc.scope.loopback_scope = 1;
stcb->asoc.scope.local_scope = 0;
stcb->asoc.scope.ipv4_local_scope = 1;
stcb->asoc.scope.site_scope = 1;
} else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
stcb->asoc.scope.ipv4_local_scope = 1;
stcb->asoc.scope.site_scope = 1;
} else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
stcb->asoc.scope.site_scope = 1;
}
} else {
if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
(stcb->asoc.scope.loopback_scope == 0)) {
addr_inscope = 0;
} else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
(stcb->asoc.scope.local_scope == 0)) {
addr_inscope = 0;
} else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
(stcb->asoc.scope.site_scope == 0)) {
addr_inscope = 0;
}
}
break;
}
#endif
default:
return (-1);
}
net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
if (net == NULL) {
return (-1);
}
SCTP_INCR_RADDR_COUNT();
memset(net, 0, sizeof(struct sctp_nets));
(void)SCTP_GETTIME_TIMEVAL(&net->start_time);
memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
switch (newaddr->sa_family) {
#ifdef INET
case AF_INET:
((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
break;
#endif
#ifdef INET6
case AF_INET6:
((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
break;
#endif
default:
break;
}
net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
stcb->asoc.scope.loopback_scope = 1;
stcb->asoc.scope.ipv4_local_scope = 1;
stcb->asoc.scope.local_scope = 0;
stcb->asoc.scope.site_scope = 1;
addr_inscope = 1;
}
net->failure_threshold = stcb->asoc.def_net_failure;
net->pf_threshold = stcb->asoc.def_net_pf_threshold;
if (addr_inscope == 0) {
net->dest_state = (SCTP_ADDR_REACHABLE |
SCTP_ADDR_OUT_OF_SCOPE);
} else {
if (from == SCTP_ADDR_IS_CONFIRMED)
net->dest_state = SCTP_ADDR_REACHABLE;
else
net->dest_state = SCTP_ADDR_REACHABLE |
SCTP_ADDR_UNCONFIRMED;
}
net->rto_needed = 1;
net->RTO = 0;
net->RTO_measured = 0;
stcb->asoc.numnets++;
net->ref_count = 1;
net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
net->port = port;
net->dscp = stcb->asoc.default_dscp;
#ifdef INET6
net->flowlabel = stcb->asoc.default_flowlabel;
#endif
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
net->dest_state |= SCTP_ADDR_NOHB;
} else {
net->dest_state &= ~SCTP_ADDR_NOHB;
}
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
net->dest_state |= SCTP_ADDR_NO_PMTUD;
} else {
net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
}
net->heart_beat_delay = stcb->asoc.heart_beat_delay;
SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
#ifdef INET6
if (newaddr->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
(void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
sin6->sin6_scope_id = 0;
}
#endif
SCTP_RTALLOC((sctp_route_t *)&net->ro,
stcb->asoc.vrf_id,
stcb->sctp_ep->fibnum);
net->src_addr_selected = 0;
if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
stcb,
(sctp_route_t *)&net->ro,
net,
0,
stcb->asoc.vrf_id);
if (stcb->asoc.default_mtu > 0) {
net->mtu = stcb->asoc.default_mtu;
switch (net->ro._l_addr.sa.sa_family) {
#ifdef INET
case AF_INET:
net->mtu += SCTP_MIN_V4_OVERHEAD;
break;
#endif
#ifdef INET6
case AF_INET6:
net->mtu += SCTP_MIN_OVERHEAD;
break;
#endif
default:
break;
}
#if defined(INET) || defined(INET6)
if (net->port) {
net->mtu += (uint32_t)sizeof(struct udphdr);
}
#endif
} else if (net->ro._s_addr != NULL) {
uint32_t imtu, rmtu, hcmtu;
net->src_addr_selected = 1;
if (net->ro._s_addr->ifn_p != NULL) {
imtu = SCTP_GATHER_MTU_FROM_IFN_INFO(net->ro._s_addr->ifn_p->ifn_p,
net->ro._s_addr->ifn_p->ifn_index);
} else {
imtu = 0;
}
rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_nh);
hcmtu = sctp_hc_get_mtu(&net->ro._l_addr, stcb->sctp_ep->fibnum);
net->mtu = sctp_min_mtu(hcmtu, rmtu, imtu);
}
}
if (net->mtu == 0) {
if (stcb->asoc.default_mtu > 0) {
net->mtu = stcb->asoc.default_mtu;
switch (net->ro._l_addr.sa.sa_family) {
#ifdef INET
case AF_INET:
net->mtu += SCTP_MIN_V4_OVERHEAD;
break;
#endif
#ifdef INET6
case AF_INET6:
net->mtu += SCTP_MIN_OVERHEAD;
break;
#endif
default:
break;
}
#if defined(INET) || defined(INET6)
if (net->port) {
net->mtu += (uint32_t)sizeof(struct udphdr);
}
#endif
} else {
switch (newaddr->sa_family) {
#ifdef INET
case AF_INET:
net->mtu = SCTP_DEFAULT_MTU;
break;
#endif
#ifdef INET6
case AF_INET6:
net->mtu = 1280;
break;
#endif
default:
break;
}
}
}
#if defined(INET) || defined(INET6)
if (net->port) {
net->mtu -= (uint32_t)sizeof(struct udphdr);
}
#endif
if (from == SCTP_ALLOC_ASOC) {
stcb->asoc.smallest_mtu = net->mtu;
}
if (stcb->asoc.smallest_mtu > net->mtu) {
sctp_pathmtu_adjustment(stcb, net->mtu, true);
}
#ifdef INET6
if (newaddr->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
(void)sa6_recoverscope(sin6);
}
#endif
if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
(*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
net->find_pseudo_cumack = 1;
net->find_rtx_pseudo_cumack = 1;
net->flowid = stcb->asoc.my_vtag ^
ntohs(stcb->rport) ^
ntohs(stcb->sctp_ep->sctp_lport);
net->flowtype = M_HASHTYPE_OPAQUE_HASH;
if (netp) {
*netp = net;
}
netfirst = TAILQ_FIRST(&stcb->asoc.nets);
if (net->ro.ro_nh == NULL) {
TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
} else if (netfirst == NULL) {
TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
} else if (netfirst->ro.ro_nh == NULL) {
TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
} else if (net->ro.ro_nh->nh_ifp != netfirst->ro.ro_nh->nh_ifp) {
TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
} else {
struct sctp_nets *netlook;
do {
netlook = TAILQ_NEXT(netfirst, sctp_next);
if (netlook == NULL) {
TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
break;
} else if (netlook->ro.ro_nh == NULL) {
TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
break;
} else if (netlook->ro.ro_nh->nh_ifp != net->ro.ro_nh->nh_ifp) {
TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
net, sctp_next);
break;
}
netfirst = netlook;
} while (netlook != NULL);
}
if (stcb->asoc.primary_destination == 0) {
stcb->asoc.primary_destination = net;
} else if ((stcb->asoc.primary_destination->ro.ro_nh == NULL) &&
(net->ro.ro_nh) &&
((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
stcb->asoc.primary_destination = net;
}
net = TAILQ_FIRST(&stcb->asoc.nets);
if ((net != stcb->asoc.primary_destination) &&
(stcb->asoc.primary_destination)) {
TAILQ_REMOVE(&stcb->asoc.nets,
stcb->asoc.primary_destination, sctp_next);
TAILQ_INSERT_HEAD(&stcb->asoc.nets,
stcb->asoc.primary_destination, sctp_next);
}
return (0);
}
static uint32_t
sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
{
uint32_t id;
struct sctpasochead *head;
struct sctp_tcb *lstcb;
try_again:
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
return (0);
}
if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
}
id = inp->sctp_associd_counter;
inp->sctp_associd_counter++;
lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
if (lstcb) {
goto try_again;
}
head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
stcb->asoc.in_asocid_hash = 1;
return (id);
}
static struct sctp_tcb *
sctp_aloc_assoc_locked(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
int *error, uint32_t override_tag, uint32_t initial_tsn,
uint32_t vrf_id, uint16_t o_streams, uint16_t port,
struct thread *p,
int initialize_auth_params)
{
struct sctp_tcb *stcb;
struct sctp_association *asoc;
struct sctpasochead *head;
uint16_t rport;
int err;
SCTP_INP_INFO_WLOCK_ASSERT();
SCTP_INP_WLOCK_ASSERT(inp);
if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
*error = ENOBUFS;
return (NULL);
}
if (firstaddr == NULL) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
}
SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
#ifdef SCTP_DEBUG
if (firstaddr) {
SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
switch (firstaddr->sa_family) {
#ifdef INET
case AF_INET:
SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
break;
#endif
#ifdef INET6
case AF_INET6:
SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
break;
#endif
default:
break;
}
} else {
SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
}
#endif
switch (firstaddr->sa_family) {
#ifdef INET
case AF_INET:
{
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)firstaddr;
if ((ntohs(sin->sin_port) == 0) ||
in_broadcast(sin->sin_addr) ||
IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) ||
((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
(SCTP_IPV6_V6ONLY(inp) != 0))) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
rport = sin->sin_port;
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)firstaddr;
if ((ntohs(sin6->sin6_port) == 0) ||
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) ||
((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
rport = sin6->sin6_port;
break;
}
#endif
default:
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
*error = EINVAL;
return (NULL);
}
if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
if ((err = sctp_inpcb_bind_locked(inp, NULL, NULL, p))) {
*error = err;
return (NULL);
}
}
stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
if (stcb == NULL) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
*error = ENOMEM;
return (NULL);
}
SCTP_INCR_ASOC_COUNT();
memset(stcb, 0, sizeof(*stcb));
asoc = &stcb->asoc;
SCTP_TCB_LOCK_INIT(stcb);
stcb->rport = rport;
stcb->sctp_ep = inp;
stcb->sctp_socket = inp->sctp_socket;
if ((err = sctp_init_asoc(inp, stcb, override_tag, initial_tsn, vrf_id, o_streams))) {
SCTP_TCB_LOCK_DESTROY(stcb);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
SCTP_DECR_ASOC_COUNT();
*error = err;
return (NULL);
}
SCTP_TCB_LOCK(stcb);
asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
LIST_INSERT_HEAD(head, stcb, sctp_asocs);
if (sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC)) {
if (asoc->strmout) {
SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
asoc->strmout = NULL;
}
if (asoc->mapping_array) {
SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
asoc->mapping_array = NULL;
}
if (asoc->nr_mapping_array) {
SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
asoc->nr_mapping_array = NULL;
}
SCTP_DECR_ASOC_COUNT();
SCTP_TCB_UNLOCK(stcb);
SCTP_TCB_LOCK_DESTROY(stcb);
LIST_REMOVE(stcb, sctp_asocs);
LIST_REMOVE(stcb, sctp_tcbasocidhash);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
*error = ENOBUFS;
return (NULL);
}
SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
if (inp->sctp_tcbhash != NULL) {
head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
inp->sctp_hashmark)];
LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
}
if (initialize_auth_params == SCTP_INITIALIZE_AUTH_PARAMS) {
sctp_initialize_auth_params(inp, stcb);
}
SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
return (stcb);
}
struct sctp_tcb *
sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
int *error, uint32_t override_tag, uint32_t initial_tsn,
uint32_t vrf_id, uint16_t o_streams, uint16_t port,
struct thread *p,
int initialize_auth_params)
{
struct sctp_tcb *stcb;
SCTP_INP_INFO_WLOCK();
SCTP_INP_WLOCK(inp);
stcb = sctp_aloc_assoc_locked(inp, firstaddr, error, override_tag,
initial_tsn, vrf_id, o_streams, port, p, initialize_auth_params);
SCTP_INP_INFO_WUNLOCK();
SCTP_INP_WUNLOCK(inp);
return (stcb);
}
struct sctp_tcb *
sctp_aloc_assoc_connected(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
int *error, uint32_t override_tag, uint32_t initial_tsn,
uint32_t vrf_id, uint16_t o_streams, uint16_t port,
struct thread *p,
int initialize_auth_params)
{
struct sctp_tcb *stcb;
SCTP_INP_INFO_WLOCK();
SCTP_INP_WLOCK(inp);
if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
SCTP_IS_LISTENING(inp)) {
SCTP_INP_INFO_WUNLOCK();
SCTP_INP_WUNLOCK(inp);
*error = EINVAL;
return (NULL);
}
stcb = sctp_aloc_assoc_locked(inp, firstaddr, error, override_tag,
initial_tsn, vrf_id, o_streams, port, p, initialize_auth_params);
SCTP_INP_INFO_WUNLOCK();
if (stcb != NULL && (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
inp->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
soisconnecting(inp->sctp_socket);
}
SCTP_INP_WUNLOCK(inp);
return (stcb);
}
void
sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
{
struct sctp_inpcb *inp;
struct sctp_association *asoc;
inp = stcb->sctp_ep;
asoc = &stcb->asoc;
asoc->numnets--;
TAILQ_REMOVE(&asoc->nets, net, sctp_next);
if (net == asoc->primary_destination) {
struct sctp_nets *lnet;
lnet = TAILQ_FIRST(&asoc->nets);
if (sctp_is_mobility_feature_on(stcb->sctp_ep,
SCTP_MOBILITY_BASE) ||
sctp_is_mobility_feature_on(stcb->sctp_ep,
SCTP_MOBILITY_FASTHANDOFF)) {
SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
if (asoc->deleted_primary != NULL) {
SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
goto out;
}
asoc->deleted_primary = net;
atomic_add_int(&net->ref_count, 1);
memset(&net->lastsa, 0, sizeof(net->lastsa));
memset(&net->lastsv, 0, sizeof(net->lastsv));
sctp_mobility_feature_on(stcb->sctp_ep,
SCTP_MOBILITY_PRIM_DELETED);
sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
stcb->sctp_ep, stcb, NULL);
}
out:
asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
}
if (net == asoc->last_data_chunk_from) {
asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
}
if (net == asoc->last_control_chunk_from) {
asoc->last_control_chunk_from = NULL;
}
if (net == asoc->last_net_cmt_send_started) {
asoc->last_net_cmt_send_started = NULL;
}
if (net == stcb->asoc.alternate) {
sctp_free_remote_addr(stcb->asoc.alternate);
stcb->asoc.alternate = NULL;
}
sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
SCTP_FROM_SCTP_PCB + SCTP_LOC_9);
sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
SCTP_FROM_SCTP_PCB + SCTP_LOC_10);
net->dest_state |= SCTP_ADDR_BEING_DELETED;
sctp_free_remote_addr(net);
}
int
sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
{
struct sctp_association *asoc;
struct sctp_nets *net, *nnet;
asoc = &stcb->asoc;
TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
continue;
}
if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
remaddr)) {
if (asoc->numnets < 2) {
return (-1);
} else {
sctp_remove_net(stcb, net);
return (0);
}
}
}
return (-2);
}
static bool
sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport, time_t now)
{
struct sctpvtaghead *chain;
struct sctp_tagblock *twait_block;
int i;
SCTP_INP_INFO_LOCK_ASSERT();
chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
if ((twait_block->vtag_block[i].tv_sec_at_expire >= now) &&
(twait_block->vtag_block[i].v_tag == tag) &&
(twait_block->vtag_block[i].lport == lport) &&
(twait_block->vtag_block[i].rport == rport)) {
return (true);
}
}
}
return (false);
}
static void
sctp_set_vtag_block(struct sctp_timewait *vtag_block, time_t time,
uint32_t tag, uint16_t lport, uint16_t rport)
{
vtag_block->tv_sec_at_expire = time;
vtag_block->v_tag = tag;
vtag_block->lport = lport;
vtag_block->rport = rport;
}
static void
sctp_add_vtag_to_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
{
struct sctpvtaghead *chain;
struct sctp_tagblock *twait_block;
struct timeval now;
time_t time;
int i;
bool set;
SCTP_INP_INFO_WLOCK_ASSERT();
(void)SCTP_GETTIME_TIMEVAL(&now);
time = now.tv_sec + SCTP_BASE_SYSCTL(sctp_vtag_time_wait);
chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
set = false;
LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
if ((twait_block->vtag_block[i].v_tag == 0) && !set) {
sctp_set_vtag_block(twait_block->vtag_block + i, time, tag, lport, rport);
set = true;
continue;
}
if ((twait_block->vtag_block[i].v_tag != 0) &&
(twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
if (set) {
sctp_set_vtag_block(twait_block->vtag_block + i, 0, 0, 0, 0);
} else {
sctp_set_vtag_block(twait_block->vtag_block + i, time, tag, lport, rport);
set = true;
}
}
}
if (set) {
break;
}
}
if (!set) {
SCTP_MALLOC(twait_block, struct sctp_tagblock *,
sizeof(struct sctp_tagblock), SCTP_M_TIMW);
if (twait_block == NULL) {
return;
}
memset(twait_block, 0, sizeof(struct sctp_tagblock));
LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
sctp_set_vtag_block(twait_block->vtag_block, time, tag, lport, rport);
}
}
void
sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
{
struct sctp_tmit_chunk *chk, *nchk;
struct sctp_queued_to_read *control, *ncontrol;
TAILQ_FOREACH_SAFE(control, rh, next_instrm, ncontrol) {
TAILQ_REMOVE(rh, control, next_instrm);
control->on_strm_q = 0;
if (control->on_read_q == 0) {
sctp_free_remote_addr(control->whoFrom);
if (control->data) {
sctp_m_freem(control->data);
control->data = NULL;
}
}
TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
TAILQ_REMOVE(&control->reasm, chk, sctp_next);
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
if (chk->holds_key_ref)
sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
sctp_free_remote_addr(chk->whoTo);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
SCTP_DECR_CHK_COUNT();
}
if (control->on_read_q == 0) {
sctp_free_a_readq(stcb, control);
}
}
}
int
sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
{
int i;
struct sctp_association *asoc;
struct sctp_nets *net, *nnet;
struct sctp_laddr *laddr, *naddr;
struct sctp_tmit_chunk *chk, *nchk;
struct sctp_asconf_addr *aparam, *naparam;
struct sctp_asconf_ack *aack, *naack;
struct sctp_stream_reset_list *strrst, *nstrrst;
struct sctp_queued_to_read *sq, *nsq;
struct sctp_stream_queue_pending *sp, *nsp;
sctp_sharedkey_t *shared_key, *nshared_key;
struct socket *so;
SCTP_TCB_LOCK_ASSERT(stcb);
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, stcb, 6);
#endif
if (stcb->asoc.state == 0) {
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 7);
#endif
return (1);
}
if (stcb->asoc.alternate) {
sctp_free_remote_addr(stcb->asoc.alternate);
stcb->asoc.alternate = NULL;
}
if (stcb->freed_from_where == 0) {
stcb->freed_from_where = from_location;
}
asoc = &stcb->asoc;
if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
so = NULL;
else
so = inp->sctp_socket;
if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
(from_inpcbfree == SCTP_NORMAL_PROC)) {
if (stcb->asoc.refcnt) {
sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
SCTP_TCB_UNLOCK(stcb);
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, stcb, 8);
#endif
return (0);
}
}
sctp_stop_association_timers(stcb, false);
if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_ABOUT_TO_BE_FREED);
SCTP_INP_READ_LOCK(inp);
TAILQ_FOREACH(sq, &inp->read_queue, next) {
if (sq->stcb == stcb) {
sq->do_not_ref_stcb = 1;
sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
if (sq->end_added == 0) {
sq->pdapi_aborted = 1;
sq->held_length = 0;
if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
stcb,
SCTP_PARTIAL_DELIVERY_ABORTED,
(void *)sq,
SCTP_SO_LOCKED);
}
sq->end_added = 1;
}
}
}
SCTP_INP_READ_UNLOCK(inp);
if (stcb->block_entry) {
SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
stcb->block_entry->error = ECONNRESET;
stcb->block_entry = NULL;
}
}
if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
if ((stcb->asoc.refcnt) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
so = NULL;
if (so) {
sctp_sorwakeup(inp, so);
sctp_sowwakeup(inp, so);
}
SCTP_TCB_UNLOCK(stcb);
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, stcb, 9);
#endif
return (0);
}
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, stcb, 10);
#endif
if (from_inpcbfree == SCTP_NORMAL_PROC) {
atomic_add_int(&stcb->asoc.refcnt, 1);
SCTP_TCB_UNLOCK(stcb);
SCTP_INP_INFO_WLOCK();
SCTP_INP_WLOCK(inp);
SCTP_TCB_LOCK(stcb);
}
if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
so = NULL;
if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
if (so) {
SOCKBUF_LOCK(&so->so_rcv);
so->so_state &= ~(SS_ISCONNECTING |
SS_ISDISCONNECTING |
SS_ISCONNECTED);
so->so_state |= SS_ISDISCONNECTED;
socantrcvmore_locked(so);
socantsendmore(so);
sctp_sowwakeup(inp, so);
sctp_sorwakeup(inp, so);
SCTP_SOWAKEUP(so);
}
}
}
if (from_inpcbfree == SCTP_NORMAL_PROC) {
atomic_subtract_int(&stcb->asoc.refcnt, 1);
}
if (stcb->asoc.refcnt) {
SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
if (from_inpcbfree == SCTP_NORMAL_PROC) {
SCTP_INP_INFO_WUNLOCK();
SCTP_INP_WUNLOCK(inp);
}
SCTP_TCB_UNLOCK(stcb);
return (0);
}
asoc->state = 0;
if (inp->sctp_tcbhash) {
LIST_REMOVE(stcb, sctp_tcbhash);
}
if (stcb->asoc.in_asocid_hash) {
LIST_REMOVE(stcb, sctp_tcbasocidhash);
}
if (inp->sctp_socket == NULL) {
stcb->sctp_socket = NULL;
}
LIST_REMOVE(stcb, sctp_tcblist);
if (from_inpcbfree == SCTP_NORMAL_PROC) {
SCTP_INP_INCR_REF(inp);
SCTP_INP_WUNLOCK(inp);
}
LIST_REMOVE(stcb, sctp_asocs);
sctp_add_vtag_to_timewait(asoc->my_vtag, inp->sctp_lport, stcb->rport);
sctp_stop_association_timers(stcb, true);
for (i = 0; i < asoc->streamoutcnt; i++) {
struct sctp_stream_out *outs;
outs = &asoc->strmout[i];
TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
atomic_subtract_int(&asoc->stream_queue_cnt, 1);
TAILQ_REMOVE(&outs->outqueue, sp, next);
stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp);
sctp_free_spbufspace(stcb, asoc, sp);
if (sp->data) {
if (so) {
sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
0, (void *)sp, SCTP_SO_LOCKED);
}
if (sp->data) {
sctp_m_freem(sp->data);
sp->data = NULL;
sp->tail_mbuf = NULL;
sp->length = 0;
}
}
if (sp->net) {
sctp_free_remote_addr(sp->net);
sp->net = NULL;
}
sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
}
}
TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
SCTP_FREE(strrst, SCTP_M_STRESET);
}
TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
if (sq->data) {
sctp_m_freem(sq->data);
sq->data = NULL;
}
sctp_free_remote_addr(sq->whoFrom);
sq->whoFrom = NULL;
sq->stcb = NULL;
sctp_free_a_readq(stcb, sq);
}
TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
if (chk->holds_key_ref)
sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
SCTP_DECR_CHK_COUNT();
atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
asoc->free_chunk_cnt--;
}
TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
#ifdef INVARIANTS
} else {
panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
#endif
}
TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
if (chk->data) {
if (so) {
sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
0, chk, SCTP_SO_LOCKED);
}
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
}
if (chk->holds_key_ref)
sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
if (chk->whoTo) {
sctp_free_remote_addr(chk->whoTo);
chk->whoTo = NULL;
}
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
SCTP_DECR_CHK_COUNT();
}
TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
#ifdef INVARIANTS
} else {
panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
#endif
}
}
TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
if (chk->data) {
if (so) {
sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
0, chk, SCTP_SO_LOCKED);
}
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
}
if (chk->holds_key_ref)
sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
sctp_free_remote_addr(chk->whoTo);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
SCTP_DECR_CHK_COUNT();
}
#ifdef INVARIANTS
for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
}
}
#endif
TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
if (chk->holds_key_ref)
sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
sctp_free_remote_addr(chk->whoTo);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
SCTP_DECR_CHK_COUNT();
}
TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
if (chk->holds_key_ref)
sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
sctp_free_remote_addr(chk->whoTo);
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
SCTP_DECR_CHK_COUNT();
}
if (asoc->mapping_array) {
SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
asoc->mapping_array = NULL;
}
if (asoc->nr_mapping_array) {
SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
asoc->nr_mapping_array = NULL;
}
if (asoc->strmout) {
SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
asoc->strmout = NULL;
}
asoc->strm_realoutsize = asoc->streamoutcnt = 0;
if (asoc->strmin) {
for (i = 0; i < asoc->streamincnt; i++) {
sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
}
SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
asoc->strmin = NULL;
}
asoc->streamincnt = 0;
TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
#ifdef INVARIANTS
if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
panic("no net's left alloc'ed, or list points to itself");
}
#endif
TAILQ_REMOVE(&asoc->nets, net, sctp_next);
sctp_free_remote_addr(net);
}
LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
sctp_remove_laddr(laddr);
}
TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
}
TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
if (aack->data != NULL) {
sctp_m_freem(aack->data);
}
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
}
if (asoc->local_hmacs)
sctp_free_hmaclist(asoc->local_hmacs);
if (asoc->peer_hmacs)
sctp_free_hmaclist(asoc->peer_hmacs);
if (asoc->local_auth_chunks)
sctp_free_chunklist(asoc->local_auth_chunks);
if (asoc->peer_auth_chunks)
sctp_free_chunklist(asoc->peer_auth_chunks);
sctp_free_authinfo(&asoc->authinfo);
LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
LIST_REMOVE(shared_key, next);
sctp_free_sharedkey(shared_key);
}
SCTP_TCB_UNLOCK(stcb);
SCTP_TCB_LOCK_DESTROY(stcb);
if (from_inpcbfree == SCTP_NORMAL_PROC) {
SCTP_INP_INFO_WUNLOCK();
SCTP_INP_RLOCK(inp);
}
#ifdef SCTP_TRACK_FREED_ASOCS
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
SCTP_DECR_ASOC_COUNT();
} else {
LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
}
#else
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
SCTP_DECR_ASOC_COUNT();
#endif
if (from_inpcbfree == SCTP_NORMAL_PROC) {
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
SCTP_INP_RUNLOCK(inp);
sctp_inpcb_free(inp,
SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
SCTP_CALLED_DIRECTLY_NOCMPSET);
SCTP_INP_DECR_REF(inp);
} else {
SCTP_INP_DECR_REF(inp);
SCTP_INP_RUNLOCK(inp);
}
}
#ifdef SCTP_LOG_CLOSING
sctp_log_closing(inp, NULL, 11);
#endif
return (1);
}
int
sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
{
struct sctp_inpcb *inp;
int answer;
inp = stcb->sctp_ep;
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
return (1);
}
switch (destaddr->sa_family) {
#ifdef INET6
case AF_INET6:
answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
break;
#endif
#ifdef INET
case AF_INET:
answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
break;
#endif
default:
answer = 0;
break;
}
return (answer);
}
static void
sctp_update_ep_vflag(struct sctp_inpcb *inp)
{
struct sctp_laddr *laddr;
inp->ip_inp.inp.inp_vflag = 0;
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
if (laddr->ifa == NULL) {
SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
__func__);
continue;
}
if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
continue;
}
switch (laddr->ifa->address.sa.sa_family) {
#ifdef INET6
case AF_INET6:
inp->ip_inp.inp.inp_vflag |= INP_IPV6;
break;
#endif
#ifdef INET
case AF_INET:
inp->ip_inp.inp.inp_vflag |= INP_IPV4;
break;
#endif
default:
break;
}
}
}
void
sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
{
struct sctp_laddr *laddr;
struct sctp_tcb *stcb;
int fnd, error = 0;
fnd = 0;
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
return;
}
#ifdef INET6
if (ifa->address.sa.sa_family == AF_INET6) {
if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
return;
}
}
#endif
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
if (laddr->ifa == ifa) {
fnd = 1;
break;
}
}
if (fnd == 0) {
error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
if (error != 0)
return;
inp->laddr_count++;
switch (ifa->address.sa.sa_family) {
#ifdef INET6
case AF_INET6:
inp->ip_inp.inp.inp_vflag |= INP_IPV6;
break;
#endif
#ifdef INET
case AF_INET:
inp->ip_inp.inp.inp_vflag |= INP_IPV4;
break;
#endif
default:
break;
}
LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
sctp_add_local_addr_restricted(stcb, ifa);
}
}
return;
}
static void
sctp_select_primary_destination(struct sctp_tcb *stcb)
{
struct sctp_nets *net;
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
continue;
if (sctp_destination_is_reachable(stcb,
(struct sockaddr *)&net->ro._l_addr)) {
stcb->asoc.primary_destination = net;
}
}
}
void
sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
{
struct sctp_laddr *laddr;
int fnd;
fnd = 0;
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
return;
}
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
if (laddr->ifa == ifa) {
fnd = 1;
break;
}
}
if (fnd && (inp->laddr_count < 2)) {
return;
}
if (fnd) {
struct sctp_tcb *stcb;
if (inp->next_addr_touse == laddr)
inp->next_addr_touse = NULL;
LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
struct sctp_nets *net;
SCTP_TCB_LOCK(stcb);
if (stcb->asoc.last_used_address == laddr)
stcb->asoc.last_used_address = NULL;
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
if (net->ro._s_addr == laddr->ifa) {
RO_NHFREE(&net->ro);
sctp_free_ifa(net->ro._s_addr);
net->ro._s_addr = NULL;
net->src_addr_selected = 0;
}
}
SCTP_TCB_UNLOCK(stcb);
}
sctp_remove_laddr(laddr);
inp->laddr_count--;
sctp_update_ep_vflag(inp);
}
return;
}
void
sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
{
struct sctp_laddr *laddr;
struct sctpladdr *list;
list = &stcb->asoc.sctp_restricted_addrs;
#ifdef INET6
if (ifa->address.sa.sa_family == AF_INET6) {
if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
return;
}
}
#endif
LIST_FOREACH(laddr, list, sctp_nxt_addr) {
if (laddr->ifa == ifa) {
return;
}
}
(void)sctp_insert_laddr(list, ifa, 0);
return;
}
void
sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
{
struct sctp_inpcb *inp;
struct sctp_laddr *laddr;
inp = stcb->sctp_ep;
if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
if (stcb->sctp_ep->laddr_count < 2) {
return;
}
}
LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
if (laddr->ifa == NULL)
continue;
if (laddr->ifa == ifa) {
sctp_remove_laddr(laddr);
return;
}
}
return;
}
static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
#if defined(SCTP_MCORE_INPUT) && defined(SMP)
struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
int *sctp_cpuarry = NULL;
void
sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
{
struct sctp_mcore_queue *qent;
struct sctp_mcore_ctrl *wkq;
int need_wake = 0;
if (sctp_mcore_workers == NULL) {
sctp_input_with_port(m, off, 0);
return;
}
SCTP_MALLOC(qent, struct sctp_mcore_queue *,
(sizeof(struct sctp_mcore_queue)),
SCTP_M_MCORE);
if (qent == NULL) {
sctp_input_with_port(m, off, 0);
return;
}
qent->vn = curvnet;
qent->m = m;
qent->off = off;
qent->v6 = 0;
wkq = &sctp_mcore_workers[cpu_to_use];
SCTP_MCORE_QLOCK(wkq);
TAILQ_INSERT_TAIL(&wkq->que, qent, next);
if (wkq->running == 0) {
need_wake = 1;
}
SCTP_MCORE_QUNLOCK(wkq);
if (need_wake) {
wakeup(&wkq->running);
}
}
static void
sctp_mcore_thread(void *arg)
{
struct sctp_mcore_ctrl *wkq;
struct sctp_mcore_queue *qent;
wkq = (struct sctp_mcore_ctrl *)arg;
struct mbuf *m;
int off, v6;
SCTP_MCORE_LOCK(wkq);
wkq->running = 0;
msleep(&wkq->running,
&wkq->core_mtx,
0, "wait for pkt", 0);
SCTP_MCORE_UNLOCK(wkq);
thread_lock(curthread);
sched_bind(curthread, wkq->cpuid);
thread_unlock(curthread);
SCTP_MCORE_LOCK(wkq);
for (;;) {
SCTP_MCORE_QLOCK(wkq);
skip_sleep:
wkq->running = 1;
qent = TAILQ_FIRST(&wkq->que);
if (qent) {
TAILQ_REMOVE(&wkq->que, qent, next);
SCTP_MCORE_QUNLOCK(wkq);
CURVNET_SET(qent->vn);
m = qent->m;
off = qent->off;
v6 = qent->v6;
SCTP_FREE(qent, SCTP_M_MCORE);
if (v6 == 0) {
sctp_input_with_port(m, off, 0);
} else {
SCTP_PRINTF("V6 not yet supported\n");
sctp_m_freem(m);
}
CURVNET_RESTORE();
SCTP_MCORE_QLOCK(wkq);
}
wkq->running = 0;
if (!TAILQ_EMPTY(&wkq->que)) {
goto skip_sleep;
}
SCTP_MCORE_QUNLOCK(wkq);
msleep(&wkq->running,
&wkq->core_mtx,
0, "wait for pkt", 0);
}
}
static void
sctp_startup_mcore_threads(void)
{
int i, cpu;
if (mp_ncpus == 1)
return;
if (sctp_mcore_workers != NULL) {
return;
}
SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
SCTP_M_MCORE);
if (sctp_mcore_workers == NULL) {
return;
}
memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
sizeof(struct sctp_mcore_ctrl)));
for (i = 0; i <= mp_maxid; i++) {
TAILQ_INIT(&sctp_mcore_workers[i].que);
SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
sctp_mcore_workers[i].cpuid = i;
}
if (sctp_cpuarry == NULL) {
SCTP_MALLOC(sctp_cpuarry, int *,
(mp_ncpus * sizeof(int)),
SCTP_M_MCORE);
i = 0;
CPU_FOREACH(cpu) {
sctp_cpuarry[i] = cpu;
i++;
}
}
CPU_FOREACH(cpu) {
(void)kproc_create(sctp_mcore_thread,
(void *)&sctp_mcore_workers[cpu],
&sctp_mcore_workers[cpu].thread_proc,
0,
SCTP_KTHREAD_PAGES,
SCTP_MCORE_NAME);
}
}
#endif
#define VALIDATE_LOADER_TUNABLE(var_name, prefix) \
if (SCTP_BASE_SYSCTL(var_name) < prefix##_MIN || \
SCTP_BASE_SYSCTL(var_name) > prefix##_MAX) \
SCTP_BASE_SYSCTL(var_name) = prefix##_DEFAULT
void
sctp_pcb_init(void)
{
int i;
struct timeval tv;
if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
return;
}
SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
#if defined(SCTP_LOCAL_TRACE_BUF)
memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
#endif
#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
((mp_maxid + 1) * sizeof(struct sctpstat)),
SCTP_M_MCORE);
#endif
(void)SCTP_GETTIME_TIMEVAL(&tv);
#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
memset(SCTP_BASE_STATS, 0, sizeof(struct sctpstat) * (mp_maxid + 1));
SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
#else
memset(&SCTP_BASE_STATS, 0, sizeof(struct sctpstat));
SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
#endif
LIST_INIT(&SCTP_BASE_INFO(listhead));
TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
VALIDATE_LOADER_TUNABLE(sctp_hashtblsize, SCTPCTL_TCBHASHSIZE);
VALIDATE_LOADER_TUNABLE(sctp_pcbtblsize, SCTPCTL_PCBHASHSIZE);
VALIDATE_LOADER_TUNABLE(sctp_chunkscale, SCTPCTL_CHUNKSCALE);
SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
&SCTP_BASE_INFO(hashasocmark));
SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
&SCTP_BASE_INFO(hashmark));
SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
&SCTP_BASE_INFO(hashtcpmark));
SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
&SCTP_BASE_INFO(hashvrfmark));
SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
&SCTP_BASE_INFO(vrf_ifn_hashmark));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
sizeof(struct sctp_inpcb), maxsockets);
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
sizeof(struct sctp_laddr),
(sctp_max_number_of_assoc * sctp_scale_up_for_address));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
sizeof(struct sctp_nets),
(sctp_max_number_of_assoc * sctp_scale_up_for_address));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
sizeof(struct sctp_tmit_chunk),
(sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
sizeof(struct sctp_queued_to_read),
(sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
sizeof(struct sctp_stream_queue_pending),
(sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
sizeof(struct sctp_asconf),
(sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
sizeof(struct sctp_asconf_ack),
(sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
SCTP_INP_INFO_LOCK_INIT();
SCTP_STATLOG_INIT_LOCK();
SCTP_IPI_COUNT_INIT();
SCTP_IPI_ADDR_INIT();
#ifdef SCTP_PACKET_LOGGING
SCTP_IP_PKTLOG_INIT();
#endif
LIST_INIT(&SCTP_BASE_INFO(addr_wq));
SCTP_WQ_ADDR_INIT();
SCTP_BASE_INFO(ipi_count_ep) = 0;
SCTP_BASE_INFO(ipi_count_asoc) = 0;
SCTP_BASE_INFO(ipi_count_laddr) = 0;
SCTP_BASE_INFO(ipi_count_raddr) = 0;
SCTP_BASE_INFO(ipi_count_chunk) = 0;
SCTP_BASE_INFO(ipi_count_readq) = 0;
SCTP_BASE_INFO(ipi_count_strmoq) = 0;
SCTP_BASE_INFO(ipi_free_strmoq) = 0;
SCTP_BASE_INFO(ipi_free_chunks) = 0;
SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
}
sctp_startup_iterator();
#if defined(SCTP_MCORE_INPUT) && defined(SMP)
sctp_startup_mcore_threads();
#endif
sctp_init_vrf_list(SCTP_DEFAULT_VRF);
}
void
sctp_pcb_finish(void)
{
struct sctp_vrflist *vrf_bucket;
struct sctp_vrf *vrf, *nvrf;
struct sctp_ifn *ifn, *nifn;
struct sctp_ifa *ifa, *nifa;
struct sctpvtaghead *chain;
struct sctp_tagblock *twait_block, *prev_twait_block;
struct sctp_laddr *wi, *nwi;
int i;
struct sctp_iterator *it, *nit;
if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
return;
}
SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
retry:
SCTP_IPI_ITERATOR_WQ_LOCK();
if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
SCTP_IPI_ITERATOR_WQ_UNLOCK();
SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
"cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
DELAY(10);
goto retry;
}
TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
if (it->vn != curvnet) {
continue;
}
TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
if (it->function_atend != NULL) {
(*it->function_atend) (it->pointer, it->val);
}
SCTP_FREE(it, SCTP_M_ITER);
}
SCTP_IPI_ITERATOR_WQ_UNLOCK();
SCTP_ITERATOR_LOCK();
if ((sctp_it_ctl.cur_it) &&
(sctp_it_ctl.cur_it->vn == curvnet)) {
sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
}
SCTP_ITERATOR_UNLOCK();
SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
SCTP_WQ_ADDR_LOCK();
LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
LIST_REMOVE(wi, sctp_nxt_addr);
SCTP_DECR_LADDR_COUNT();
if (wi->action == SCTP_DEL_IP_ADDRESS) {
SCTP_FREE(wi->ifa, SCTP_M_IFA);
}
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
}
SCTP_WQ_ADDR_UNLOCK();
SCTP_IPI_ADDR_WLOCK();
vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
LIST_REMOVE(ifa, next_bucket);
LIST_REMOVE(ifa, next_ifa);
SCTP_FREE(ifa, SCTP_M_IFA);
}
LIST_REMOVE(ifn, next_bucket);
LIST_REMOVE(ifn, next_ifn);
SCTP_FREE(ifn, SCTP_M_IFN);
}
SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
LIST_REMOVE(vrf, next_vrf);
SCTP_FREE(vrf, SCTP_M_VRF);
}
SCTP_IPI_ADDR_WUNLOCK();
SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
chain = &SCTP_BASE_INFO(vtag_timewait)[i];
if (!LIST_EMPTY(chain)) {
prev_twait_block = NULL;
LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
if (prev_twait_block) {
SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
}
prev_twait_block = twait_block;
}
SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
}
}
#ifdef SCTP_PACKET_LOGGING
SCTP_IP_PKTLOG_DESTROY();
#endif
SCTP_IPI_ADDR_DESTROY();
SCTP_STATLOG_DESTROY();
SCTP_INP_INFO_LOCK_DESTROY();
SCTP_WQ_ADDR_DESTROY();
if (SCTP_BASE_INFO(sctp_asochash) != NULL)
SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
if (SCTP_BASE_INFO(sctp_ephash) != NULL)
SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
#endif
}
int
sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
int offset, int limit,
struct sockaddr *src, struct sockaddr *dst,
struct sockaddr *altsa, uint16_t port)
{
struct sctp_inpcb *inp;
struct sctp_nets *net, *nnet, *net_tmp;
struct sctp_paramhdr *phdr, param_buf;
struct sctp_tcb *stcb_tmp;
uint16_t ptype, plen;
struct sockaddr *sa;
uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
struct sctp_auth_random *p_random = NULL;
uint16_t random_len = 0;
uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
struct sctp_auth_hmac_algo *hmacs = NULL;
uint16_t hmacs_len = 0;
uint8_t saw_asconf = 0;
uint8_t saw_asconf_ack = 0;
uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
struct sctp_auth_chunk_list *chunks = NULL;
uint16_t num_chunks = 0;
sctp_key_t *new_key;
uint32_t keylen;
int got_random = 0, got_hmacs = 0, got_chklist = 0;
uint8_t peer_supports_ecn;
uint8_t peer_supports_prsctp;
uint8_t peer_supports_auth;
uint8_t peer_supports_asconf;
uint8_t peer_supports_asconf_ack;
uint8_t peer_supports_reconfig;
uint8_t peer_supports_nrsack;
uint8_t peer_supports_pktdrop;
uint8_t peer_supports_idata;
#ifdef INET
struct sockaddr_in sin;
#endif
#ifdef INET6
struct sockaddr_in6 sin6;
#endif
#ifdef INET
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_len = sizeof(sin);
sin.sin_port = stcb->rport;
#endif
#ifdef INET6
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(struct sockaddr_in6);
sin6.sin6_port = stcb->rport;
#endif
if (altsa) {
sa = altsa;
} else {
sa = src;
}
peer_supports_idata = 0;
peer_supports_ecn = 0;
peer_supports_prsctp = 0;
peer_supports_auth = 0;
peer_supports_asconf = 0;
peer_supports_asconf_ack = 0;
peer_supports_reconfig = 0;
peer_supports_nrsack = 0;
peer_supports_pktdrop = 0;
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
}
inp = stcb->sctp_ep;
atomic_add_int(&stcb->asoc.refcnt, 1);
stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
atomic_subtract_int(&stcb->asoc.refcnt, 1);
if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
switch (sa->sa_family) {
#ifdef INET
case AF_INET:
if (stcb->asoc.scope.ipv4_addr_legal) {
if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
return (-1);
}
}
break;
#endif
#ifdef INET6
case AF_INET6:
if (stcb->asoc.scope.ipv6_addr_legal) {
if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
return (-2);
}
}
break;
#endif
default:
break;
}
} else {
if (net_tmp != NULL && stcb_tmp == stcb) {
net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
} else if (stcb_tmp != stcb) {
if (stcb_tmp)
SCTP_TCB_UNLOCK(stcb_tmp);
return (-3);
}
}
if (stcb->asoc.state == 0) {
return (-4);
}
phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
while (phdr) {
ptype = ntohs(phdr->param_type);
plen = ntohs(phdr->param_length);
if (offset + plen > limit) {
break;
}
if (plen < sizeof(struct sctp_paramhdr)) {
break;
}
#ifdef INET
if (ptype == SCTP_IPV4_ADDRESS) {
if (stcb->asoc.scope.ipv4_addr_legal) {
struct sctp_ipv4addr_param *p4, p4_buf;
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&p4_buf,
sizeof(p4_buf));
if (plen != sizeof(struct sctp_ipv4addr_param) ||
phdr == NULL) {
return (-5);
}
p4 = (struct sctp_ipv4addr_param *)phdr;
sin.sin_addr.s_addr = p4->addr;
if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
goto next_param;
}
if (in_broadcast(sin.sin_addr)) {
goto next_param;
}
sa = (struct sockaddr *)&sin;
inp = stcb->sctp_ep;
atomic_add_int(&stcb->asoc.refcnt, 1);
stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
dst, stcb);
atomic_subtract_int(&stcb->asoc.refcnt, 1);
if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
inp == NULL) {
add_it_now:
if (stcb->asoc.state == 0) {
return (-7);
}
if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
return (-8);
}
} else if (stcb_tmp == stcb) {
if (stcb->asoc.state == 0) {
return (-10);
}
if (net != NULL) {
net->dest_state &=
~SCTP_ADDR_NOT_IN_ASSOC;
}
} else {
if (stcb_tmp) {
if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
struct mbuf *op_err;
char msg[SCTP_DIAG_INFO_LEN];
SCTP_SNPRINTF(msg, sizeof(msg),
"%s:%d at %s", __FILE__, __LINE__, __func__);
op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
msg);
sctp_abort_an_association(stcb_tmp->sctp_ep,
stcb_tmp, op_err, false,
SCTP_SO_NOT_LOCKED);
goto add_it_now;
}
SCTP_TCB_UNLOCK(stcb_tmp);
}
if (stcb->asoc.state == 0) {
return (-12);
}
return (-13);
}
}
} else
#endif
#ifdef INET6
if (ptype == SCTP_IPV6_ADDRESS) {
if (stcb->asoc.scope.ipv6_addr_legal) {
struct sctp_ipv6addr_param *p6, p6_buf;
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&p6_buf,
sizeof(p6_buf));
if (plen != sizeof(struct sctp_ipv6addr_param) ||
phdr == NULL) {
return (-14);
}
p6 = (struct sctp_ipv6addr_param *)phdr;
memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
sizeof(p6->addr));
if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
goto next_param;
}
if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
goto next_param;
}
sa = (struct sockaddr *)&sin6;
inp = stcb->sctp_ep;
atomic_add_int(&stcb->asoc.refcnt, 1);
stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
dst, stcb);
atomic_subtract_int(&stcb->asoc.refcnt, 1);
if (stcb_tmp == NULL &&
(inp == stcb->sctp_ep || inp == NULL)) {
add_it_now6:
if (stcb->asoc.state == 0) {
return (-16);
}
if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
return (-17);
}
} else if (stcb_tmp == stcb) {
if (stcb->asoc.state == 0) {
return (-19);
}
if (net != NULL) {
net->dest_state &=
~SCTP_ADDR_NOT_IN_ASSOC;
}
} else {
if (stcb_tmp) {
if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
struct mbuf *op_err;
char msg[SCTP_DIAG_INFO_LEN];
SCTP_SNPRINTF(msg, sizeof(msg),
"%s:%d at %s", __FILE__, __LINE__, __func__);
op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
msg);
sctp_abort_an_association(stcb_tmp->sctp_ep,
stcb_tmp, op_err, false,
SCTP_SO_NOT_LOCKED);
goto add_it_now6;
}
SCTP_TCB_UNLOCK(stcb_tmp);
}
if (stcb->asoc.state == 0) {
return (-21);
}
return (-22);
}
}
} else
#endif
if (ptype == SCTP_ECN_CAPABLE) {
peer_supports_ecn = 1;
} else if (ptype == SCTP_ULP_ADAPTATION) {
if (stcb->asoc.state != SCTP_STATE_OPEN) {
struct sctp_adaptation_layer_indication ai,
*aip;
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&ai, sizeof(ai));
aip = (struct sctp_adaptation_layer_indication *)phdr;
if (aip) {
stcb->asoc.peers_adaptation = ntohl(aip->indication);
stcb->asoc.adaptation_needed = 1;
}
}
} else if (ptype == SCTP_SET_PRIM_ADDR) {
struct sctp_asconf_addr_param lstore, *fee;
int lptype;
struct sockaddr *lsa = NULL;
#ifdef INET
struct sctp_asconf_addrv4_param *fii;
#endif
if (stcb->asoc.asconf_supported == 0) {
return (-100);
}
if (plen > sizeof(lstore)) {
return (-23);
}
if (plen < sizeof(struct sctp_asconf_addrv4_param)) {
return (-101);
}
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&lstore,
plen);
if (phdr == NULL) {
return (-24);
}
fee = (struct sctp_asconf_addr_param *)phdr;
lptype = ntohs(fee->addrp.ph.param_type);
switch (lptype) {
#ifdef INET
case SCTP_IPV4_ADDRESS:
if (plen !=
sizeof(struct sctp_asconf_addrv4_param)) {
SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
(int)sizeof(struct sctp_asconf_addrv4_param),
plen);
} else {
fii = (struct sctp_asconf_addrv4_param *)fee;
sin.sin_addr.s_addr = fii->addrp.addr;
lsa = (struct sockaddr *)&sin;
}
break;
#endif
#ifdef INET6
case SCTP_IPV6_ADDRESS:
if (plen !=
sizeof(struct sctp_asconf_addr_param)) {
SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
(int)sizeof(struct sctp_asconf_addr_param),
plen);
} else {
memcpy(sin6.sin6_addr.s6_addr,
fee->addrp.addr,
sizeof(fee->addrp.addr));
lsa = (struct sockaddr *)&sin6;
}
break;
#endif
default:
break;
}
if (lsa) {
(void)sctp_set_primary_addr(stcb, sa, NULL);
}
} else if (ptype == SCTP_HAS_NAT_SUPPORT) {
stcb->asoc.peer_supports_nat = 1;
} else if (ptype == SCTP_PRSCTP_SUPPORTED) {
peer_supports_prsctp = 1;
} else if (ptype == SCTP_ZERO_CHECKSUM_ACCEPTABLE) {
struct sctp_zero_checksum_acceptable zero_chksum,
*zero_chksum_p;
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&zero_chksum,
sizeof(struct sctp_zero_checksum_acceptable));
if (phdr != NULL) {
zero_chksum_p = (struct sctp_zero_checksum_acceptable *)phdr;
if ((ntohl(zero_chksum_p->edmid) != SCTP_EDMID_NONE) &&
(ntohl(zero_chksum_p->edmid) == stcb->asoc.rcv_edmid)) {
stcb->asoc.snd_edmid = stcb->asoc.rcv_edmid;
}
}
} else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
struct sctp_supported_chunk_types_param *pr_supported;
uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
int num_ent, i;
if (plen > sizeof(local_store)) {
return (-35);
}
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)&local_store, plen);
if (phdr == NULL) {
return (-25);
}
pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
num_ent = plen - sizeof(struct sctp_paramhdr);
for (i = 0; i < num_ent; i++) {
switch (pr_supported->chunk_types[i]) {
case SCTP_ASCONF:
peer_supports_asconf = 1;
break;
case SCTP_ASCONF_ACK:
peer_supports_asconf_ack = 1;
break;
case SCTP_FORWARD_CUM_TSN:
peer_supports_prsctp = 1;
break;
case SCTP_PACKET_DROPPED:
peer_supports_pktdrop = 1;
break;
case SCTP_NR_SELECTIVE_ACK:
peer_supports_nrsack = 1;
break;
case SCTP_STREAM_RESET:
peer_supports_reconfig = 1;
break;
case SCTP_AUTHENTICATION:
peer_supports_auth = 1;
break;
case SCTP_IDATA:
peer_supports_idata = 1;
break;
default:
break;
}
}
} else if (ptype == SCTP_RANDOM) {
if (plen > sizeof(random_store))
break;
if (got_random) {
goto next_param;
}
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)random_store,
plen);
if (phdr == NULL)
return (-26);
p_random = (struct sctp_auth_random *)phdr;
random_len = plen - sizeof(*p_random);
if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
return (-27);
}
got_random = 1;
} else if (ptype == SCTP_HMAC_LIST) {
uint16_t num_hmacs;
uint16_t i;
if (plen > sizeof(hmacs_store))
break;
if (got_hmacs) {
goto next_param;
}
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)hmacs_store,
plen);
if (phdr == NULL)
return (-28);
hmacs = (struct sctp_auth_hmac_algo *)phdr;
hmacs_len = plen - sizeof(*hmacs);
num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
return (-29);
}
if (stcb->asoc.peer_hmacs != NULL)
sctp_free_hmaclist(stcb->asoc.peer_hmacs);
stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
if (stcb->asoc.peer_hmacs != NULL) {
for (i = 0; i < num_hmacs; i++) {
(void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
ntohs(hmacs->hmac_ids[i]));
}
}
got_hmacs = 1;
} else if (ptype == SCTP_CHUNK_LIST) {
int i;
if (plen > sizeof(chunks_store))
break;
if (got_chklist) {
goto next_param;
}
phdr = sctp_get_next_param(m, offset,
(struct sctp_paramhdr *)chunks_store,
plen);
if (phdr == NULL)
return (-30);
chunks = (struct sctp_auth_chunk_list *)phdr;
num_chunks = plen - sizeof(*chunks);
if (stcb->asoc.peer_auth_chunks != NULL)
sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
else
stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
for (i = 0; i < num_chunks; i++) {
(void)sctp_auth_add_chunk(chunks->chunk_types[i],
stcb->asoc.peer_auth_chunks);
if (chunks->chunk_types[i] == SCTP_ASCONF)
saw_asconf = 1;
if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
saw_asconf_ack = 1;
}
got_chklist = 1;
} else if ((ptype == SCTP_HEARTBEAT_INFO) ||
(ptype == SCTP_STATE_COOKIE) ||
(ptype == SCTP_UNRECOG_PARAM) ||
(ptype == SCTP_COOKIE_PRESERVE) ||
(ptype == SCTP_SUPPORTED_ADDRTYPE) ||
(ptype == SCTP_ADD_IP_ADDRESS) ||
(ptype == SCTP_DEL_IP_ADDRESS) ||
(ptype == SCTP_ERROR_CAUSE_IND) ||
(ptype == SCTP_SUCCESS_REPORT)) {
} else {
if ((ptype & 0x8000) == 0x0000) {
break;
}
}
next_param:
offset += SCTP_SIZE32(plen);
if (offset >= limit) {
break;
}
phdr = sctp_get_next_param(m, offset, ¶m_buf,
sizeof(param_buf));
}
TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
SCTP_ADDR_NOT_IN_ASSOC) {
stcb->asoc.numnets--;
TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
if (net == stcb->asoc.alternate) {
sctp_free_remote_addr(stcb->asoc.alternate);
stcb->asoc.alternate = NULL;
}
if (net == stcb->asoc.primary_destination) {
stcb->asoc.primary_destination = NULL;
sctp_select_primary_destination(stcb);
}
sctp_free_remote_addr(net);
}
}
if ((stcb->asoc.ecn_supported == 1) &&
(peer_supports_ecn == 0)) {
stcb->asoc.ecn_supported = 0;
}
if ((stcb->asoc.prsctp_supported == 1) &&
(peer_supports_prsctp == 0)) {
stcb->asoc.prsctp_supported = 0;
}
if ((stcb->asoc.auth_supported == 1) &&
((peer_supports_auth == 0) ||
(got_random == 0) || (got_hmacs == 0))) {
stcb->asoc.auth_supported = 0;
}
if ((stcb->asoc.asconf_supported == 1) &&
((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
(stcb->asoc.auth_supported == 0) ||
(saw_asconf == 0) || (saw_asconf_ack == 0))) {
stcb->asoc.asconf_supported = 0;
}
if ((stcb->asoc.reconfig_supported == 1) &&
(peer_supports_reconfig == 0)) {
stcb->asoc.reconfig_supported = 0;
}
if ((stcb->asoc.idata_supported == 1) &&
(peer_supports_idata == 0)) {
stcb->asoc.idata_supported = 0;
}
if ((stcb->asoc.nrsack_supported == 1) &&
(peer_supports_nrsack == 0)) {
stcb->asoc.nrsack_supported = 0;
}
if ((stcb->asoc.pktdrop_supported == 1) &&
(peer_supports_pktdrop == 0)) {
stcb->asoc.pktdrop_supported = 0;
}
if ((peer_supports_auth == 0) && (got_chklist == 1)) {
return (-31);
}
if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
return (-32);
} else if ((peer_supports_asconf == 1) &&
(peer_supports_auth == 1) &&
((saw_asconf == 0) || (saw_asconf_ack == 0))) {
return (-33);
}
keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
if (chunks != NULL) {
keylen += sizeof(*chunks) + num_chunks;
}
new_key = sctp_alloc_key(keylen);
if (new_key != NULL) {
if (p_random != NULL) {
keylen = sizeof(*p_random) + random_len;
memcpy(new_key->key, p_random, keylen);
} else {
keylen = 0;
}
if (chunks != NULL) {
memcpy(new_key->key + keylen, chunks,
sizeof(*chunks) + num_chunks);
keylen += sizeof(*chunks) + num_chunks;
}
if (hmacs != NULL) {
memcpy(new_key->key + keylen, hmacs,
sizeof(*hmacs) + hmacs_len);
}
} else {
return (-34);
}
if (stcb->asoc.authinfo.peer_random != NULL)
sctp_free_key(stcb->asoc.authinfo.peer_random);
stcb->asoc.authinfo.peer_random = new_key;
sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
return (0);
}
int
sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
struct sctp_nets *net)
{
if (net == NULL && sa)
net = sctp_findnet(stcb, sa);
if (net == NULL) {
return (-1);
} else {
if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
return (0);
}
stcb->asoc.primary_destination = net;
if (((net->dest_state & SCTP_ADDR_PF) == 0) &&
(stcb->asoc.alternate != NULL)) {
sctp_free_remote_addr(stcb->asoc.alternate);
stcb->asoc.alternate = NULL;
}
net = TAILQ_FIRST(&stcb->asoc.nets);
if (net != stcb->asoc.primary_destination) {
TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
}
return (0);
}
}
bool
sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
{
struct sctpasochead *head;
struct sctp_tcb *stcb;
SCTP_INP_INFO_LOCK_ASSERT();
head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag, SCTP_BASE_INFO(hashasocmark))];
LIST_FOREACH(stcb, head, sctp_asocs) {
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
continue;
}
if (stcb->asoc.my_vtag == tag) {
if (stcb->rport != rport) {
continue;
}
if (stcb->sctp_ep->sctp_lport != lport) {
continue;
}
return (false);
}
}
return (!sctp_is_in_timewait(tag, lport, rport, now->tv_sec));
}
static void
sctp_drain_mbufs(struct sctp_tcb *stcb)
{
struct sctp_association *asoc;
struct sctp_tmit_chunk *chk, *nchk;
uint32_t cumulative_tsn_p1;
struct sctp_queued_to_read *control, *ncontrol;
int cnt, strmat;
uint32_t gap, i;
int fnd = 0;
asoc = &stcb->asoc;
if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
return;
}
SCTP_STAT_INCR(sctps_protocol_drains_done);
cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
cnt = 0;
for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].inqueue, next_instrm, ncontrol) {
#ifdef INVARIANTS
if (control->on_strm_q != SCTP_ON_ORDERED) {
panic("Huh control: %p on_q: %d -- not ordered?",
control, control->on_strm_q);
}
#endif
if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
cnt++;
SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
KASSERT(control->length > 0, ("control has zero length"));
if (asoc->size_on_all_streams >= control->length) {
asoc->size_on_all_streams -= control->length;
} else {
#ifdef INVARIANTS
panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
#else
asoc->size_on_all_streams = 0;
#endif
}
sctp_ucount_decr(asoc->cnt_on_all_streams);
SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
if (control->on_read_q) {
TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
control->on_read_q = 0;
}
TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, control, next_instrm);
control->on_strm_q = 0;
if (control->data) {
sctp_m_freem(control->data);
control->data = NULL;
}
sctp_free_remote_addr(control->whoFrom);
TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
cnt++;
SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
KASSERT(chk->send_size > 0, ("chunk has zero length"));
if (asoc->size_on_reasm_queue >= chk->send_size) {
asoc->size_on_reasm_queue -= chk->send_size;
} else {
#ifdef INVARIANTS
panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
#else
asoc->size_on_reasm_queue = 0;
#endif
}
sctp_ucount_decr(asoc->cnt_on_reasm_queue);
SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
TAILQ_REMOVE(&control->reasm, chk, sctp_next);
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
}
sctp_free_a_readq(stcb, control);
}
}
TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].uno_inqueue, next_instrm, ncontrol) {
#ifdef INVARIANTS
if (control->on_strm_q != SCTP_ON_UNORDERED) {
panic("Huh control: %p on_q: %d -- not unordered?",
control, control->on_strm_q);
}
#endif
if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
cnt++;
SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
KASSERT(control->length > 0, ("control has zero length"));
if (asoc->size_on_all_streams >= control->length) {
asoc->size_on_all_streams -= control->length;
} else {
#ifdef INVARIANTS
panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
#else
asoc->size_on_all_streams = 0;
#endif
}
sctp_ucount_decr(asoc->cnt_on_all_streams);
SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
if (control->on_read_q) {
TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
control->on_read_q = 0;
}
TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, control, next_instrm);
control->on_strm_q = 0;
if (control->data) {
sctp_m_freem(control->data);
control->data = NULL;
}
sctp_free_remote_addr(control->whoFrom);
TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
cnt++;
SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
KASSERT(chk->send_size > 0, ("chunk has zero length"));
if (asoc->size_on_reasm_queue >= chk->send_size) {
asoc->size_on_reasm_queue -= chk->send_size;
} else {
#ifdef INVARIANTS
panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
#else
asoc->size_on_reasm_queue = 0;
#endif
}
sctp_ucount_decr(asoc->cnt_on_reasm_queue);
SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
TAILQ_REMOVE(&control->reasm, chk, sctp_next);
if (chk->data) {
sctp_m_freem(chk->data);
chk->data = NULL;
}
sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
}
sctp_free_a_readq(stcb, control);
}
}
}
if (cnt) {
for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
asoc->highest_tsn_inside_map = i;
fnd = 1;
break;
}
}
if (!fnd) {
asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
}
#ifdef SCTP_DEBUG
SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
#endif
asoc->last_revoke_count = cnt;
sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
SCTP_FROM_SCTP_PCB + SCTP_LOC_11);
sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
}
}
static void
sctp_drain(void *arg __unused, int flags __unused)
{
struct epoch_tracker et;
VNET_ITERATOR_DECL(vnet_iter);
NET_EPOCH_ENTER(et);
VNET_LIST_RLOCK_NOSLEEP();
VNET_FOREACH(vnet_iter) {
CURVNET_SET(vnet_iter);
struct sctp_inpcb *inp;
struct sctp_tcb *stcb;
SCTP_STAT_INCR(sctps_protocol_drain_calls);
if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
#ifdef VIMAGE
continue;
#else
NET_EPOCH_EXIT(et);
return;
#endif
}
SCTP_INP_INFO_RLOCK();
LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
SCTP_INP_RLOCK(inp);
LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
SCTP_TCB_LOCK(stcb);
sctp_drain_mbufs(stcb);
SCTP_TCB_UNLOCK(stcb);
}
SCTP_INP_RUNLOCK(inp);
}
SCTP_INP_INFO_RUNLOCK();
CURVNET_RESTORE();
}
VNET_LIST_RUNLOCK_NOSLEEP();
NET_EPOCH_EXIT(et);
}
EVENTHANDLER_DEFINE(vm_lowmem, sctp_drain, NULL, LOWMEM_PRI_DEFAULT);
EVENTHANDLER_DEFINE(mbuf_lowmem, sctp_drain, NULL, LOWMEM_PRI_DEFAULT);
int
sctp_initiate_iterator(inp_func inpf,
asoc_func af,
inp_func inpe,
uint32_t pcb_state,
uint32_t pcb_features,
uint32_t asoc_state,
void *argp,
uint32_t argi,
end_func ef,
struct sctp_inpcb *s_inp,
uint8_t chunk_output_off)
{
struct sctp_iterator *it = NULL;
if (af == NULL) {
return (-1);
}
if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
SCTP_BASE_VAR(sctp_pcb_initialized));
return (-1);
}
SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
SCTP_M_ITER);
if (it == NULL) {
SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
return (-1);
}
memset(it, 0, sizeof(*it));
it->function_assoc = af;
it->function_inp = inpf;
if (inpf)
it->done_current_ep = 0;
else
it->done_current_ep = 1;
it->function_atend = ef;
it->pointer = argp;
it->val = argi;
it->pcb_flags = pcb_state;
it->pcb_features = pcb_features;
it->asoc_state = asoc_state;
it->function_inp_end = inpe;
it->no_chunk_output = chunk_output_off;
it->vn = curvnet;
if (s_inp) {
it->inp = s_inp;
SCTP_INP_INCR_REF(it->inp);
it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
} else {
SCTP_INP_INFO_RLOCK();
it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
if (it->inp) {
SCTP_INP_INCR_REF(it->inp);
}
SCTP_INP_INFO_RUNLOCK();
it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
}
SCTP_IPI_ITERATOR_WQ_LOCK();
if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
SCTP_IPI_ITERATOR_WQ_UNLOCK();
SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
SCTP_BASE_VAR(sctp_pcb_initialized), it);
SCTP_FREE(it, SCTP_M_ITER);
return (-1);
}
TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
if (sctp_it_ctl.iterator_running == 0) {
sctp_wakeup_iterator();
}
SCTP_IPI_ITERATOR_WQ_UNLOCK();
return (0);
}
void
sctp_pcb_add_flags(struct sctp_inpcb *inp, uint32_t flags)
{
uint32_t old_flags, new_flags;
do {
old_flags = inp->sctp_flags;
new_flags = old_flags | flags;
} while (atomic_cmpset_int(&inp->sctp_flags, old_flags, new_flags) == 0);
}
