diff options
Diffstat (limited to 'drivers/scsi/iscsi_tcp.c')
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 127 |
1 files changed, 98 insertions, 29 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 7ce177e30a53..da66fb524b5b 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -1870,18 +1870,22 @@ tcp_conn_alloc_fail: static void iscsi_tcp_release_conn(struct iscsi_conn *conn) { + struct iscsi_session *session = conn->session; struct iscsi_tcp_conn *tcp_conn = conn->dd_data; + struct socket *sock = tcp_conn->sock; - if (!tcp_conn->sock) + if (!sock) return; - sock_hold(tcp_conn->sock->sk); + sock_hold(sock->sk); iscsi_conn_restore_callbacks(tcp_conn); - sock_put(tcp_conn->sock->sk); + sock_put(sock->sk); - sockfd_put(tcp_conn->sock); + spin_lock_bh(&session->lock); tcp_conn->sock = NULL; conn->recv_lock = NULL; + spin_unlock_bh(&session->lock); + sockfd_put(sock); } static void @@ -1912,6 +1916,46 @@ iscsi_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag) tcp_conn->hdr_size = sizeof(struct iscsi_hdr); } +static int iscsi_tcp_get_addr(struct iscsi_conn *conn, struct socket *sock, + char *buf, int *port, + int (*getname)(struct socket *, struct sockaddr *, + int *addrlen)) +{ + struct sockaddr_storage *addr; + struct sockaddr_in6 *sin6; + struct sockaddr_in *sin; + int rc = 0, len; + + addr = kmalloc(GFP_KERNEL, sizeof(*addr)); + if (!addr) + return -ENOMEM; + + if (getname(sock, (struct sockaddr *) addr, &len)) { + rc = -ENODEV; + goto free_addr; + } + + switch (addr->ss_family) { + case AF_INET: + sin = (struct sockaddr_in *)addr; + spin_lock_bh(&conn->session->lock); + sprintf(buf, NIPQUAD_FMT, NIPQUAD(sin->sin_addr.s_addr)); + *port = be16_to_cpu(sin->sin_port); + spin_unlock_bh(&conn->session->lock); + break; + case AF_INET6: + sin6 = (struct sockaddr_in6 *)addr; + spin_lock_bh(&conn->session->lock); + sprintf(buf, NIP6_FMT, NIP6(sin6->sin6_addr)); + *port = be16_to_cpu(sin6->sin6_port); + spin_unlock_bh(&conn->session->lock); + break; + } +free_addr: + kfree(addr); + return rc; +} + static int iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session, struct iscsi_cls_conn *cls_conn, uint64_t transport_eph, @@ -1929,10 +1973,24 @@ iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session, printk(KERN_ERR "iscsi_tcp: sockfd_lookup failed %d\n", err); return -EEXIST; } + /* + * copy these values now because if we drop the session + * userspace may still want to query the values since we will + * be using them for the reconnect + */ + err = iscsi_tcp_get_addr(conn, sock, conn->portal_address, + &conn->portal_port, kernel_getpeername); + if (err) + goto free_socket; + + err = iscsi_tcp_get_addr(conn, sock, conn->local_address, + &conn->local_port, kernel_getsockname); + if (err) + goto free_socket; err = iscsi_conn_bind(cls_session, cls_conn, is_leading); if (err) - return err; + goto free_socket; /* bind iSCSI connection and socket */ tcp_conn->sock = sock; @@ -1956,8 +2014,11 @@ iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session, * set receive state machine into initial state */ tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER; - return 0; + +free_socket: + sockfd_put(sock); + return err; } /* called with host lock */ @@ -2077,33 +2138,18 @@ iscsi_tcp_conn_get_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param, char *buf) { struct iscsi_conn *conn = cls_conn->dd_data; - struct iscsi_tcp_conn *tcp_conn = conn->dd_data; - struct inet_sock *inet; - struct ipv6_pinfo *np; - struct sock *sk; int len; switch(param) { case ISCSI_PARAM_CONN_PORT: - if (!tcp_conn->sock) - return -EINVAL; - - inet = inet_sk(tcp_conn->sock->sk); - len = sprintf(buf, "%hu\n", be16_to_cpu(inet->dport)); + spin_lock_bh(&conn->session->lock); + len = sprintf(buf, "%hu\n", conn->portal_port); + spin_unlock_bh(&conn->session->lock); break; case ISCSI_PARAM_CONN_ADDRESS: - if (!tcp_conn->sock) - return -EINVAL; - - sk = tcp_conn->sock->sk; - if (sk->sk_family == PF_INET) { - inet = inet_sk(sk); - len = sprintf(buf, NIPQUAD_FMT "\n", - NIPQUAD(inet->daddr)); - } else { - np = inet6_sk(sk); - len = sprintf(buf, NIP6_FMT "\n", NIP6(np->daddr)); - } + spin_lock_bh(&conn->session->lock); + len = sprintf(buf, "%s\n", conn->portal_address); + spin_unlock_bh(&conn->session->lock); break; default: return iscsi_conn_get_param(cls_conn, param, buf); @@ -2112,6 +2158,29 @@ iscsi_tcp_conn_get_param(struct iscsi_cls_conn *cls_conn, return len; } +static int +iscsi_tcp_host_get_param(struct Scsi_Host *shost, enum iscsi_host_param param, + char *buf) +{ + struct iscsi_session *session = iscsi_hostdata(shost->hostdata); + int len; + + switch (param) { + case ISCSI_HOST_PARAM_IPADDRESS: + spin_lock_bh(&session->lock); + if (!session->leadconn) + len = -ENODEV; + else + len = sprintf(buf, "%s\n", + session->leadconn->local_address); + spin_unlock_bh(&session->lock); + break; + default: + return iscsi_host_get_param(shost, param, buf); + } + return len; +} + static void iscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *stats) { @@ -2233,7 +2302,7 @@ static struct iscsi_transport iscsi_tcp_transport = { ISCSI_TARGET_NAME | ISCSI_TPGT | ISCSI_USERNAME | ISCSI_PASSWORD | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN, - .host_param_mask = ISCSI_HOST_HWADDRESS | + .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | ISCSI_HOST_INITIATOR_NAME, .host_template = &iscsi_sht, .conndata_size = sizeof(struct iscsi_conn), @@ -2252,7 +2321,7 @@ static struct iscsi_transport iscsi_tcp_transport = { .start_conn = iscsi_conn_start, .stop_conn = iscsi_tcp_conn_stop, /* iscsi host params */ - .get_host_param = iscsi_host_get_param, + .get_host_param = iscsi_tcp_host_get_param, .set_host_param = iscsi_host_set_param, /* IO */ .send_pdu = iscsi_conn_send_pdu, |