diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-03-15 17:48:49 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-03-19 01:28:36 +0100 |
| commit | be25152c0d9e236076323abbe9def9714234b761 (patch) | |
| tree | fcdda94e20887fafd1e405b08734ffd2e04749e1 /drivers/scsi/qla2xxx/tcm_qla2xxx.c | |
| parent | qla2xxx: Allow relogin to proceed if remote login did not finish (diff) | |
| download | linux-be25152c0d9e236076323abbe9def9714234b761.tar.xz linux-be25152c0d9e236076323abbe9def9714234b761.zip | |
qla2xxx: Improve T10-DIF/PI handling in driver.
Add routines to support T10 DIF tag.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/scsi/qla2xxx/tcm_qla2xxx.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 8e8ab0fa9672..7443e4efa3ae 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -531,6 +531,24 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work) return; } + switch (cmd->dif_err_code) { + case DIF_ERR_GRD: + cmd->se_cmd.pi_err = + TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; + break; + case DIF_ERR_REF: + cmd->se_cmd.pi_err = + TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; + break; + case DIF_ERR_APP: + cmd->se_cmd.pi_err = + TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; + break; + case DIF_ERR_NONE: + default: + break; + } + if (cmd->se_cmd.pi_err) transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); @@ -555,25 +573,23 @@ static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); } -static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) +static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) { - struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); - - /* take an extra kref to prevent cmd free too early. - * need to wait for SCSI status/check condition to - * finish responding generate by transport_generic_request_failure. - */ - kref_get(&cmd->se_cmd.cmd_kref); - transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); + return 0; } -/* - * Called from qla_target.c:qlt_do_ctio_completion() - */ -static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) +static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, + uint16_t *pfw_prot_opts) { - INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); - queue_work(tcm_qla2xxx_free_wq, &cmd->work); + struct se_cmd *se_cmd = &cmd->se_cmd; + + if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) + *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; + + if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) + *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; + + return 0; } /* @@ -1610,7 +1626,6 @@ static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { .handle_cmd = tcm_qla2xxx_handle_cmd, .handle_data = tcm_qla2xxx_handle_data, - .handle_dif_err = tcm_qla2xxx_handle_dif_err, .handle_tmr = tcm_qla2xxx_handle_tmr, .free_cmd = tcm_qla2xxx_free_cmd, .free_mcmd = tcm_qla2xxx_free_mcmd, @@ -1622,6 +1637,8 @@ static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, .put_sess = tcm_qla2xxx_put_sess, .shutdown_sess = tcm_qla2xxx_shutdown_sess, + .get_dif_tags = tcm_qla2xxx_dif_tags, + .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, }; static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) |