diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-09-30 09:14:51 +0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-10-03 00:17:32 +0400 |
| commit | 1c417f39c1f896206f0d5bfec65cd61a8f5e69b8 (patch) | |
| tree | 94860180b473678b9621545406ae3c9c36575a3e | |
| parent | 21f5aa7eb8572b5cfe36884c23d306c72fe3987c (diff) | |
| download | linux-1c417f39c1f896206f0d5bfec65cd61a8f5e69b8.tar.xz | |
iscsi-target: Add MaxXmitDataSegmentLength connection recovery check
The iSCSI TMR TASK_REASSIGN completion logic in iscsi_tmr_task_reassign()
does an explict check for MRDSL across task reassignment, so go ahead and
add an explict MaxXmitDataSegmentLength check here as well to be safe.
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Andy Grover <agrover@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_core.h | 1 | ||||
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_erl2.c | 1 | ||||
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_tmr.c | 9 |
3 files changed, 10 insertions, 1 deletions
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h index b26611aa5ff3..e6a830545c89 100644 --- a/drivers/target/iscsi/iscsi_target_core.h +++ b/drivers/target/iscsi/iscsi_target_core.h @@ -579,6 +579,7 @@ struct iscsi_conn_recovery { u16 cid; u32 cmd_count; u32 maxrecvdatasegmentlength; + u32 maxxmitdatasegmentlength; int ready_for_reallegiance; struct list_head conn_recovery_cmd_list; spinlock_t conn_recovery_cmd_lock; diff --git a/drivers/target/iscsi/iscsi_target_erl2.c b/drivers/target/iscsi/iscsi_target_erl2.c index 65aac14fd831..667c19cc3b28 100644 --- a/drivers/target/iscsi/iscsi_target_erl2.c +++ b/drivers/target/iscsi/iscsi_target_erl2.c @@ -421,6 +421,7 @@ int iscsit_prepare_cmds_for_realligance(struct iscsi_conn *conn) cr->cid = conn->cid; cr->cmd_count = cmd_count; cr->maxrecvdatasegmentlength = conn->conn_ops->MaxRecvDataSegmentLength; + cr->maxxmitdatasegmentlength = conn->conn_ops->MaxXmitDataSegmentLength; cr->sess = conn->sess; iscsit_attach_inactive_connection_recovery_entry(conn->sess, cr); diff --git a/drivers/target/iscsi/iscsi_target_tmr.c b/drivers/target/iscsi/iscsi_target_tmr.c index f62fe123d902..05d2e6445ade 100644 --- a/drivers/target/iscsi/iscsi_target_tmr.c +++ b/drivers/target/iscsi/iscsi_target_tmr.c @@ -146,7 +146,7 @@ u8 iscsit_tmr_task_reassign( } /* * Temporary check to prevent connection recovery for - * connections with a differing MaxRecvDataSegmentLength. + * connections with a differing Max*DataSegmentLength. */ if (cr->maxrecvdatasegmentlength != conn->conn_ops->MaxRecvDataSegmentLength) { @@ -155,6 +155,13 @@ u8 iscsit_tmr_task_reassign( " TMR TASK_REASSIGN.\n"); return ISCSI_TMF_RSP_REJECTED; } + if (cr->maxxmitdatasegmentlength != + conn->conn_ops->MaxXmitDataSegmentLength) { + pr_err("Unable to perform connection recovery for" + " differing MaxXmitDataSegmentLength, rejecting" + " TMR TASK_REASSIGN.\n"); + return ISCSI_TMF_RSP_REJECTED; + } ref_lun = scsilun_to_int(&hdr->lun); if (ref_lun != ref_cmd->se_cmd.orig_fe_lun) { |