On 01/06/2011 12:54 AM, Or Gerlitz wrote:
Mike Christie wrote:
I went a different way. In the attached patch we detect the problem when
binding and will force a disconnect of the old ep before binding a new one.
Try it out and let me know.
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -651,8 +651,7 @@ free_addr:
static int
iscsi_sw_tcp_conn_bind(struct iscsi_cls_session *cls_session,
- struct iscsi_cls_conn *cls_conn, uint64_t transport_eph,
- int is_leading)
+ struct iscsi_cls_conn *cls_conn, uint64_t transport_eph)
{
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
struct iscsi_host *ihost = shost_priv(shost);
@@ -685,7 +684,7 @@ iscsi_sw_tcp_conn_bind(struct iscsi_cls_session
*cls_session,
if (err)
goto free_socket;
- err = iscsi_conn_bind(cls_session, cls_conn, is_leading);
+ err = iscsi_conn_bind(cls_session, cls_conn, NULL);
should this be transport_eph instead of NULL?
No. iscsi_tcp does not use the iscsi_endpoint abstraction becuase it
actually uses normal old sockets that are created in userspace.
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -3137,16 +3137,18 @@ void iscsi_conn_stop(struct iscsi_cls_conn *cls_conn,
int flag)
EXPORT_SYMBOL_GPL(iscsi_conn_stop);
int iscsi_conn_bind(struct iscsi_cls_session *cls_session,
- struct iscsi_cls_conn *cls_conn, int is_leading)
+ struct iscsi_cls_conn *cls_conn,
+ struct iscsi_endpoint *ep)
{
struct iscsi_session *session = cls_session->dd_data;
struct iscsi_conn *conn = cls_conn->dd_data;
spin_lock_bh(&session->lock);
- if (is_leading)
- session->leadconn = conn;
+ session->leadconn = conn;
spin_unlock_bh(&session->lock);
+ ep->conn = cls_conn;
+ cls_conn->ep = ep;
if not, it doesn't look like ep can be null here...
Will fix. Tested offload and did not test software iscsi.
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -388,7 +388,7 @@ extern void iscsi_conn_teardown(struct iscsi_cls_conn *);
extern int iscsi_conn_bind(struct iscsi_cls_session *, struct iscsi_cls_conn
*,
- int);
+ struct iscsi_endpoint *);
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -95,7 +95,7 @@ struct iscsi_transport {
uint32_t cid);
int (*bind_conn) (struct iscsi_cls_session *session,
struct iscsi_cls_conn *cls_conn,
- uint64_t transport_eph, int is_leading);
+ uint64_t transport_eph);
so we're implicitly casting from u64 to ep pointer? I guess this should be fine.
No. The transport->bind_conn takes the u64 id. The driver then looks
that up and passes iscsi_bind_conn a pointer to the ep struct.
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