#ifndef __KSMBD_CONNECTION_H__
#define __KSMBD_CONNECTION_H__
#include <linux/list.h>
#include <linux/inet.h>
#include <linux/ip.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/inet_connection_sock.h>
#include <net/request_sock.h>
#include <linux/kthread.h>
#include <linux/nls.h>
#include <linux/unicode.h>
#include "smb_common.h"
#include "ksmbd_work.h"
struct smbdirect_buffer_descriptor_v1;
#define KSMBD_SOCKET_BACKLOG 16
enum {
KSMBD_SESS_NEW = 0,
KSMBD_SESS_GOOD,
KSMBD_SESS_EXITING,
KSMBD_SESS_NEED_RECONNECT,
KSMBD_SESS_NEED_NEGOTIATE,
KSMBD_SESS_NEED_SETUP,
KSMBD_SESS_RELEASING
};
struct ksmbd_conn_stats {
atomic_t open_files_count;
atomic64_t request_served;
};
struct ksmbd_transport;
struct ksmbd_conn {
struct smb_version_values *vals;
struct smb_version_ops *ops;
struct smb_version_cmds *cmds;
unsigned int max_cmds;
struct mutex srv_mutex;
int status;
unsigned int cli_cap;
union {
__be32 inet_addr;
#if IS_ENABLED(CONFIG_IPV6)
u8 inet6_addr[16];
#endif
};
unsigned int inet_hash;
char *request_buf;
struct ksmbd_transport *transport;
struct nls_table *local_nls;
struct unicode_map *um;
struct hlist_node hlist;
struct rw_semaphore session_lock;
struct xarray sessions;
unsigned long last_active;
atomic_t req_running;
atomic_t r_count;
unsigned int total_credits;
unsigned int outstanding_credits;
spinlock_t credits_lock;
wait_queue_head_t req_running_q;
wait_queue_head_t r_count_q;
spinlock_t request_lock;
struct list_head requests;
struct list_head async_requests;
int connection_type;
struct ksmbd_conn_stats stats;
char ClientGUID[SMB2_CLIENT_GUID_SIZE];
struct ntlmssp_auth ntlmssp;
spinlock_t llist_lock;
struct list_head lock_list;
struct preauth_integrity_info *preauth_info;
bool need_neg;
unsigned int auth_mechs;
unsigned int preferred_auth_mech;
bool sign;
bool use_spnego:1;
__u16 cli_sec_mode;
__u16 srv_sec_mode;
__u16 dialect;
char *mechToken;
unsigned int mechTokenLen;
struct ksmbd_conn_ops *conn_ops;
struct list_head preauth_sess_table;
struct sockaddr_storage peer_addr;
struct ida async_ida;
__le16 cipher_type;
__le16 compress_algorithm;
bool posix_ext_supported;
bool signing_negotiated;
__le16 signing_algorithm;
bool binding;
atomic_t refcnt;
bool is_aapl;
};
struct ksmbd_conn_ops {
int (*process_fn)(struct ksmbd_conn *conn);
int (*terminate_fn)(struct ksmbd_conn *conn);
};
struct ksmbd_transport_ops {
int (*prepare)(struct ksmbd_transport *t);
void (*disconnect)(struct ksmbd_transport *t);
void (*shutdown)(struct ksmbd_transport *t);
int (*read)(struct ksmbd_transport *t, char *buf,
unsigned int size, int max_retries);
int (*writev)(struct ksmbd_transport *t, struct kvec *iovs, int niov,
int size, bool need_invalidate_rkey,
unsigned int remote_key);
int (*rdma_read)(struct ksmbd_transport *t,
void *buf, unsigned int len,
struct smbdirect_buffer_descriptor_v1 *desc,
unsigned int desc_len);
int (*rdma_write)(struct ksmbd_transport *t,
void *buf, unsigned int len,
struct smbdirect_buffer_descriptor_v1 *desc,
unsigned int desc_len);
void (*free_transport)(struct ksmbd_transport *kt);
};
struct ksmbd_transport {
struct ksmbd_conn *conn;
const struct ksmbd_transport_ops *ops;
};
#define KSMBD_TCP_RECV_TIMEOUT (7 * HZ)
#define KSMBD_TCP_SEND_TIMEOUT (5 * HZ)
#define KSMBD_TCP_PEER_SOCKADDR(c) ((struct sockaddr *)&((c)->peer_addr))
#define CONN_HASH_BITS 12
extern DECLARE_HASHTABLE(conn_list, CONN_HASH_BITS);
extern struct rw_semaphore conn_list_lock;
bool ksmbd_conn_alive(struct ksmbd_conn *conn);
void ksmbd_conn_wait_idle(struct ksmbd_conn *conn);
int ksmbd_conn_wait_idle_sess_id(struct ksmbd_conn *curr_conn, u64 sess_id);
struct ksmbd_conn *ksmbd_conn_alloc(void);
void ksmbd_conn_free(struct ksmbd_conn *conn);
bool ksmbd_conn_lookup_dialect(struct ksmbd_conn *c);
int ksmbd_conn_write(struct ksmbd_work *work);
int ksmbd_conn_rdma_read(struct ksmbd_conn *conn,
void *buf, unsigned int buflen,
struct smbdirect_buffer_descriptor_v1 *desc,
unsigned int desc_len);
int ksmbd_conn_rdma_write(struct ksmbd_conn *conn,
void *buf, unsigned int buflen,
struct smbdirect_buffer_descriptor_v1 *desc,
unsigned int desc_len);
void ksmbd_conn_enqueue_request(struct ksmbd_work *work);
void ksmbd_conn_try_dequeue_request(struct ksmbd_work *work);
void ksmbd_conn_init_server_callbacks(struct ksmbd_conn_ops *ops);
int ksmbd_conn_handler_loop(void *p);
int ksmbd_conn_transport_init(void);
void ksmbd_conn_transport_destroy(void);
void ksmbd_conn_lock(struct ksmbd_conn *conn);
void ksmbd_conn_unlock(struct ksmbd_conn *conn);
void ksmbd_conn_r_count_inc(struct ksmbd_conn *conn);
void ksmbd_conn_r_count_dec(struct ksmbd_conn *conn);
static inline bool ksmbd_conn_good(struct ksmbd_conn *conn)
{
return READ_ONCE(conn->status) == KSMBD_SESS_GOOD;
}
static inline bool ksmbd_conn_need_negotiate(struct ksmbd_conn *conn)
{
return READ_ONCE(conn->status) == KSMBD_SESS_NEED_NEGOTIATE;
}
static inline bool ksmbd_conn_need_setup(struct ksmbd_conn *conn)
{
return READ_ONCE(conn->status) == KSMBD_SESS_NEED_SETUP;
}
static inline bool ksmbd_conn_need_reconnect(struct ksmbd_conn *conn)
{
return READ_ONCE(conn->status) == KSMBD_SESS_NEED_RECONNECT;
}
static inline bool ksmbd_conn_exiting(struct ksmbd_conn *conn)
{
return READ_ONCE(conn->status) == KSMBD_SESS_EXITING;
}
static inline bool ksmbd_conn_releasing(struct ksmbd_conn *conn)
{
return READ_ONCE(conn->status) == KSMBD_SESS_RELEASING;
}
static inline void ksmbd_conn_set_new(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_NEW);
}
static inline void ksmbd_conn_set_good(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_GOOD);
}
static inline void ksmbd_conn_set_need_negotiate(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_NEED_NEGOTIATE);
}
static inline void ksmbd_conn_set_need_setup(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_NEED_SETUP);
}
static inline void ksmbd_conn_set_need_reconnect(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_NEED_RECONNECT);
}
static inline void ksmbd_conn_set_exiting(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_EXITING);
}
static inline void ksmbd_conn_set_releasing(struct ksmbd_conn *conn)
{
WRITE_ONCE(conn->status, KSMBD_SESS_RELEASING);
}
void ksmbd_all_conn_set_status(u64 sess_id, u32 status);
#endif
