path: root/drivers/infiniband/ulp/iser/iscsi_iser.h
diff options
authorMike Christie <michaelc@cs.wisc.edu>2008-05-21 15:54:03 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-12 08:22:17 -0500
commitb40977d95fb3a1898ace6a7d97e4ed1a33a440a4 (patch)
treedfbe7909a066c974f16403e25f687496dde7fb0a /drivers/infiniband/ulp/iser/iscsi_iser.h
parent5af3e91d232b7e022f258202f72ebb79b8b0c706 (diff)
[SCSI] iser: fix handling of scsi cmnds during recovery.
After the stop_conn callback has returned the LLD should not touch the scsi cmds. iscsi_tcp and libiscsi use the conn->recv_lock and suspend_rx field to halt recv path processing, but iser does not have any protection. This patch modifies iser so that userspace can just call the ep_disconnect callback, which will halt all recv IO, before calling the stop_conn callback so we do not have to worry about the conn->recv_lock and suspend rx field. iser just needs to stop the send side from accessing the ib conn. Fixup to handle when the ep poll fails and ep disconnect is called from Erez. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iscsi_iser.h')
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 66a2f30ada0..bd5c1a554ea 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -242,6 +242,7 @@ struct iser_device {
struct iser_conn {
struct iscsi_iser_conn *iser_conn; /* iser conn for upcalls */
enum iser_ib_conn_state state; /* rdma connection state */
+ atomic_t refcount;
spinlock_t lock; /* used for state changes */
struct iser_device *device; /* device context */
struct rdma_cm_id *cma_id; /* CMA ID */
@@ -314,6 +315,10 @@ void iscsi_iser_recv(struct iscsi_conn *conn,
int iser_conn_init(struct iser_conn **ib_conn);
+void iser_conn_get(struct iser_conn *ib_conn);
+void iser_conn_put(struct iser_conn *ib_conn);
void iser_conn_terminate(struct iser_conn *ib_conn);
void iser_rcv_completion(struct iser_desc *desc,