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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-10-28 22:37:19 +0200 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-11-02 16:57:13 +0100 |
| commit | 5a4c8666c6d576f076a7c6824589cdbb984c0f84 (patch) | |
| tree | cd4eb1d2c67ff7cf99b4de4e9420c6c1df5b1085 /drivers/target | |
| parent | iscsi-target: Add missing CMDSN_LOWER_THAN_EXP check in iscsit_handle_scsi_cmd (diff) | |
| download | linux-5a4c8666c6d576f076a7c6824589cdbb984c0f84.tar.xz linux-5a4c8666c6d576f076a7c6824589cdbb984c0f84.zip | |
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/target')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 7855a63d49fc..1bf057ed9931 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. |