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[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>
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;