[SCSI] iscsi class, qla4xxx, iscsi_tcp: export local address
This patch exports the local address for the session. For
qla4xxx this is the ip of the hba's port. For software
this is the src addr of the socket.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: David C Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 7ce177e..da66fb5 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -1870,18 +1870,22 @@
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 @@
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 @@
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 @@
* 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 @@
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 @@
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 @@
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 @@
.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,