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[SCSI] iscsi class, qla4xxx, iscsi_tcp: export local address

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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>
This commit is contained in:
Mike Christie
2007-05-30 12:57:24 -05:00
committed by James Bottomley
parent 4e7aba73f9
commit 2223696192
5 changed files with 118 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

127
drivers/scsi/iscsi_tcp.c
View File

@@ -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,