From 5a4c8666c6d576f076a7c6824589cdbb984c0f84 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 28 Oct 2011 13:37:19 -0700 Subject: [PATCH] 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 Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 7855a63..1bf057e 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. -- 2.7.4