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| author |   Jenny Derzhavetz <jennyf@mellanox.com> | 2015-09-06 14:52:20 +0300 |
|---|---|---|
| committer |   Nicholas Bellinger <nab@linux-iscsi.org> | 2015-09-15 15:47:19 -0700 |
| commit | a4c15cd957cbd728f685645de7a150df5912591a (patch) | |
| tree | 9b94ff4f3a240c559ceb10c48b899932c98f8a09 /drivers/infiniband/ulp/isert | |
| parent | Linux 4.3-rc1 (diff) | |
| download | linux-dev-a4c15cd957cbd728f685645de7a150df5912591a.tar.xz linux-dev-a4c15cd957cbd728f685645de7a150df5912591a.zip | |
iser-target: remove command with state ISTATE_REMOVE
As documented in iscsit_sequence_cmd:
/*
* Existing callers for iscsit_sequence_cmd() will silently
* ignore commands with CMDSN_LOWER_THAN_EXP, so force this
* return for CMDSN_MAXCMDSN_OVERRUN as well..
*/
We need to silently finish a command when it's in ISTATE_REMOVE.
This fixes an teardown hang we were seeing where a mis-behaved
initiator (triggered by allocation error injections) sent us a
cmdsn which was lower than expected.
Signed-off-by: Jenny Derzhavetz <jennyf@mellanox.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband/ulp/isert')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 403bd29443b8..443ef33fbf30 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -2999,9 +2999,16 @@ isert_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, bool recovery) static int isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) { - int ret; + struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd); + int ret = 0; switch (state) { + case ISTATE_REMOVE: + spin_lock_bh(&conn->cmd_lock); + list_del_init(&cmd->i_conn_node); + spin_unlock_bh(&conn->cmd_lock); + isert_put_cmd(isert_cmd, true); + break; case ISTATE_SEND_NOPIN_WANT_RESPONSE: ret = isert_put_nopin(cmd, conn, false); break; |