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authorMike Christie <michaelc@cs.wisc.edu>2009-05-13 17:57:38 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-05-23 15:44:09 -0500
commit10eb0f013c63c71c82ede77945a5f390c10cfda6 (patch)
tree6f4b738aa1dfc422087a0b05ebde4388cf84a3f0 /drivers/scsi/scsi_transport_iscsi.c
parent5a2537959fa8781012e8c286fc1614e0f6991327 (diff)
[SCSI] iscsi: pass ep connect shost
When we create the tcp/ip connection by calling ep_connect, we currently just go by the routing table info. I think there are two problems with this. 1. Some drivers do not have access to a routing table. Some drivers like qla4xxx do not even know about other ports. 2. If you have two initiator ports on the same subnet, the user may have set things up so that session1 was supposed to be run through port1. and session2 was supposed to be run through port2. It looks like we could end with both sessions going through one of the ports. Fixes for cxgb3i from Karen Xie. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/scsi_transport_iscsi.c')
-rw-r--r--drivers/scsi/scsi_transport_iscsi.c51
1 files changed, 40 insertions, 11 deletions
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 0a2ce7b6325..d69a53aa406 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1268,26 +1268,54 @@ iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
return err;
}
+static int iscsi_if_ep_connect(struct iscsi_transport *transport,
+ struct iscsi_uevent *ev, int msg_type)
+{
+ struct iscsi_endpoint *ep;
+ struct sockaddr *dst_addr;
+ struct Scsi_Host *shost = NULL;
+ int non_blocking, err = 0;
+
+ if (!transport->ep_connect)
+ return -EINVAL;
+
+ if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) {
+ shost = scsi_host_lookup(ev->u.ep_connect_through_host.host_no);
+ if (!shost) {
+ printk(KERN_ERR "ep connect failed. Could not find "
+ "host no %u\n",
+ ev->u.ep_connect_through_host.host_no);
+ return -ENODEV;
+ }
+ non_blocking = ev->u.ep_connect_through_host.non_blocking;
+ } else
+ non_blocking = ev->u.ep_connect.non_blocking;
+
+ dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
+ ep = transport->ep_connect(shost, dst_addr, non_blocking);
+ if (IS_ERR(ep)) {
+ err = PTR_ERR(ep);
+ goto release_host;
+ }
+
+ ev->r.ep_connect_ret.handle = ep->id;
+release_host:
+ if (shost)
+ scsi_host_put(shost);
+ return err;
+}
+
static int
iscsi_if_transport_ep(struct iscsi_transport *transport,
struct iscsi_uevent *ev, int msg_type)
{
struct iscsi_endpoint *ep;
- struct sockaddr *dst_addr;
int rc = 0;
switch (msg_type) {
+ case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST:
case ISCSI_UEVENT_TRANSPORT_EP_CONNECT:
- if (!transport->ep_connect)
- return -EINVAL;
-
- dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
- ep = transport->ep_connect(dst_addr,
- ev->u.ep_connect.non_blocking);
- if (IS_ERR(ep))
- return PTR_ERR(ep);
-
- ev->r.ep_connect_ret.handle = ep->id;
+ rc = iscsi_if_ep_connect(transport, ev, msg_type);
break;
case ISCSI_UEVENT_TRANSPORT_EP_POLL:
if (!transport->ep_poll)
@@ -1469,6 +1497,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
case ISCSI_UEVENT_TRANSPORT_EP_CONNECT:
case ISCSI_UEVENT_TRANSPORT_EP_POLL:
case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT:
+ case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST:
err = iscsi_if_transport_ep(transport, ev, nlh->nlmsg_type);
break;
case ISCSI_UEVENT_TGT_DSCVR: