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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
Show stats 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,

8
drivers/scsi/qla4xxx/ql4_os.c
View file

@ -106,6 +106,7 @@ static struct iscsi_transport qla4xxx_iscsi_transport = {
.param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS |
ISCSI_TARGET_NAME | ISCSI_TPGT,
.host_param_mask = ISCSI_HOST_HWADDRESS |
ISCSI_HOST_IPADDRESS |
ISCSI_HOST_INITIATOR_NAME,
.sessiondata_size = sizeof(struct ddb_entry),
.host_template = &qla4xxx_driver_template,
@ -192,8 +193,13 @@ static int qla4xxx_host_get_param(struct Scsi_Host *shost,
case ISCSI_HOST_PARAM_HWADDRESS:
len = format_addr(buf, ha->my_mac, MAC_ADDR_LEN);
break;
case ISCSI_HOST_PARAM_IPADDRESS:
len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0],
ha->ip_address[1], ha->ip_address[2],
ha->ip_address[3]);
break;
case ISCSI_HOST_PARAM_INITIATOR_NAME:
len = sprintf(buf, ha->name_string);
len = sprintf(buf, "%s\n", ha->name_string);
break;
default:
return -ENOSYS;

4
drivers/scsi/scsi_transport_iscsi.c
View file

@ -32,7 +32,7 @@
#define ISCSI_SESSION_ATTRS 15
#define ISCSI_CONN_ATTRS 11
#define ISCSI_HOST_ATTRS 2
#define ISCSI_HOST_ATTRS 3
#define ISCSI_TRANSPORT_VERSION "2.0-724"
struct iscsi_internal {
@ -1261,6 +1261,7 @@ show_host_param_##param(struct class_device *cdev, char *buf) \
static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \
NULL);
iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS);
iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS);
iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME);
@ -1398,6 +1399,7 @@ iscsi_register_transport(struct iscsi_transport *tt)
priv->t.host_size = sizeof(struct iscsi_host);
transport_container_register(&priv->t.host_attrs);
SETUP_HOST_RD_ATTR(ipaddress, ISCSI_HOST_IPADDRESS);
SETUP_HOST_RD_ATTR(hwaddress, ISCSI_HOST_HWADDRESS);
SETUP_HOST_RD_ATTR(initiatorname, ISCSI_HOST_INITIATOR_NAME);
BUG_ON(count > ISCSI_HOST_ATTRS);

2
include/scsi/iscsi_if.h
View file

@ -271,11 +271,13 @@ enum iscsi_param {
enum iscsi_host_param {
ISCSI_HOST_PARAM_HWADDRESS,
ISCSI_HOST_PARAM_INITIATOR_NAME,
ISCSI_HOST_PARAM_IPADDRESS,
ISCSI_HOST_PARAM_MAX,
};
#define ISCSI_HOST_HWADDRESS (1 << ISCSI_HOST_PARAM_HWADDRESS)
#define ISCSI_HOST_INITIATOR_NAME (1 << ISCSI_HOST_PARAM_INITIATOR_NAME)
#define ISCSI_HOST_IPADDRESS (1 << ISCSI_HOST_PARAM_IPADDRESS)
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)

8
include/scsi/libiscsi.h
View file

@ -72,6 +72,8 @@ struct iscsi_nopin;
#define ISCSI_AGE_SHIFT 28
#define ISCSI_AGE_MASK (0xf << ISCSI_AGE_SHIFT)
#define ISCSI_ADDRESS_BUF_LEN 64
struct iscsi_mgmt_task {
/*
* Becuae LLDs allocate their hdr differently, this is a pointer to
@ -174,6 +176,12 @@ struct iscsi_conn {
/* values userspace uses to id a conn */
int persistent_port;
char *persistent_address;
/* remote portal currently connected to */
int portal_port;
char portal_address[ISCSI_ADDRESS_BUF_LEN];
/* local address */
int local_port;
char local_address[ISCSI_ADDRESS_BUF_LEN];
/* MIB-statistics */
uint64_t txdata_octets;