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authorNicholas Bellinger <nab@linux-iscsi.org>2011-10-28 13:37:19 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2011-11-02 15:57:13 +0000
commit5a4c8666c6d576f076a7c6824589cdbb984c0f84 (patch)
treecd4eb1d2c67ff7cf99b4de4e9420c6c1df5b1085 /drivers
parent7e32da55e26b80d57961681e53aa67938268db3f (diff)
downloadvexpress-lsk-5a4c8666c6d576f076a7c6824589cdbb984c0f84.tar.gz
iscsi-target: Fix non-immediate TMR handling
This patch addresses two issues with non immediate TMR handling in iscsit_handle_task_mgt_cmd(). The first involves breakage due to v3.1-rc conversion of iscsit_sequence_cmd(), which upon good status would hit the iscsit_add_reject_from_cmd() block of code. This patch adds an explict check for CMDSN_ERROR_CANNOT_RECOVER. The second adds a check to return when non immediate TMR operation is detected after iscsit_ack_from_expstatsn(), as iscsit_sequence_cmd() -> iscsit_execute_cmd() will have called transport_generic_handle_tmr() for the non immediate TMR case already. Cc: Andy Grover <agrover@redhat.com> Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/target/iscsi/iscsi_target.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 7855a63d49f..1bf057ed993 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1821,17 +1821,16 @@ attach:
int cmdsn_ret = iscsit_sequence_cmd(conn, cmd, hdr->cmdsn);
if (cmdsn_ret == CMDSN_HIGHER_THAN_EXP)
out_of_order_cmdsn = 1;
- else if (cmdsn_ret == CMDSN_LOWER_THAN_EXP) {
+ else if (cmdsn_ret == CMDSN_LOWER_THAN_EXP)
return 0;
- } else { /* (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER) */
+ else if (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER)
return iscsit_add_reject_from_cmd(
ISCSI_REASON_PROTOCOL_ERROR,
1, 0, buf, cmd);
- }
}
iscsit_ack_from_expstatsn(conn, hdr->exp_statsn);
- if (out_of_order_cmdsn)
+ if (out_of_order_cmdsn || !(hdr->opcode & ISCSI_OP_IMMEDIATE))
return 0;
/*
* Found the referenced task, send to transport for processing.