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author | 2020-01-03 11:27:19 -0800 | |
---|---|---|
committer | 2020-02-10 22:46:54 -0500 | |
commit | 80363e1b673b242fa5f5578a7b1e3fa03bf4729a (patch) | |
tree | 77ee3634e66ecccf061352cfaa062b67669f2aa7 /drivers/scsi/qla2xxx | |
parent | Linux 5.6-rc1 (diff) | |
download | linux-80363e1b673b242fa5f5578a7b1e3fa03bf4729a.tar.gz linux-80363e1b673b242fa5f5578a7b1e3fa03bf4729a.tar.bz2 linux-80363e1b673b242fa5f5578a7b1e3fa03bf4729a.zip |
scsi: tcm_qla2xxx: Make qlt_alloc_qfull_cmd() set cmd->se_cmd.map_tag
Reduce code duplication by introducing the tcm_qla2xxx_{get,rel}_cmd()
functions. Introduce these functions in the tcm_qla2xxx.c source files such
that the qla_target.c source file becomes independent of the SCSI target
core header files. This patch fixes a bug, namely by ensuring that
qlt_alloc_qfull_cmd() sets cmd->se_cmd.map_tag.
Cc: Himanshu Madhani <hmadhani@marvell.com>
Link: https://lore.kernel.org/r/20200103192719.205158-1-bvanassche@acm.org
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
-rw-r--r-- | drivers/scsi/qla2xxx/qla_target.c | 28 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_target.h | 2 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.c | 25 |
3 files changed, 33 insertions, 22 deletions
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 70081b395fb2..243f87df3d2b 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -27,8 +27,6 @@ #include <scsi/scsi.h> #include <scsi/scsi_host.h> #include <scsi/scsi_tcq.h> -#include <target/target_core_base.h> -#include <target/target_core_fabric.h> #include "qla_def.h" #include "qla_target.h" @@ -3816,7 +3814,7 @@ void qlt_free_cmd(struct qla_tgt_cmd *cmd) return; } cmd->jiffies_at_free = get_jiffies_64(); - target_free_tag(sess->se_sess, &cmd->se_cmd); + cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); } EXPORT_SYMBOL(qlt_free_cmd); @@ -4150,7 +4148,7 @@ out_term: qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); qlt_decr_num_pend_cmds(vha); - target_free_tag(sess->se_sess, &cmd->se_cmd); + cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); ha->tgt.tgt_ops->put_sess(sess); @@ -4277,24 +4275,18 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, struct fc_port *sess, struct atio_from_isp *atio) { - struct se_session *se_sess = sess->se_sess; struct qla_tgt_cmd *cmd; - int tag, cpu; - tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); - if (tag < 0) + cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); + if (!cmd) return NULL; - cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; - memset(cmd, 0, sizeof(struct qla_tgt_cmd)); cmd->cmd_type = TYPE_TGT_CMD; memcpy(&cmd->atio, atio, sizeof(*atio)); cmd->state = QLA_TGT_STATE_NEW; cmd->tgt = vha->vha_tgt.qla_tgt; qlt_incr_num_pend_cmds(vha); cmd->vha = vha; - cmd->se_cmd.map_tag = tag; - cmd->se_cmd.map_cpu = cpu; cmd->sess = sess; cmd->loop_id = sess->loop_id; cmd->conf_compl_supported = sess->conf_compl_supported; @@ -5352,9 +5344,7 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; struct qla_hw_data *ha = vha->hw; struct fc_port *sess; - struct se_session *se_sess; struct qla_tgt_cmd *cmd; - int tag, cpu; unsigned long flags; if (unlikely(tgt->tgt_stop)) { @@ -5384,10 +5374,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, if (!sess) return; - se_sess = sess->se_sess; - - tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); - if (tag < 0) { + cmd = ha->tgt.tgt_ops->get_cmd(sess); + if (!cmd) { ql_dbg(ql_dbg_io, vha, 0x3009, "qla_target(%d): %s: Allocation of cmd failed\n", vha->vp_idx, __func__); @@ -5402,9 +5390,6 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, return; } - cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; - memset(cmd, 0, sizeof(struct qla_tgt_cmd)); - qlt_incr_num_pend_cmds(vha); INIT_LIST_HEAD(&cmd->cmd_list); memcpy(&cmd->atio, atio, sizeof(*atio)); @@ -5414,7 +5399,6 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, cmd->reset_count = ha->base_qpair->chip_reset; cmd->q_full = 1; cmd->qpair = ha->base_qpair; - cmd->se_cmd.map_cpu = cpu; if (qfull) { cmd->q_full = 1; diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h index 6539499e9e95..3cf8590feeac 100644 --- a/drivers/scsi/qla2xxx/qla_target.h +++ b/drivers/scsi/qla2xxx/qla_target.h @@ -671,6 +671,8 @@ struct qla_tgt_func_tmpl { void (*handle_data)(struct qla_tgt_cmd *); int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, u64, uint16_t, uint32_t); + struct qla_tgt_cmd *(*get_cmd)(struct fc_port *); + void (*rel_cmd)(struct qla_tgt_cmd *); void (*free_cmd)(struct qla_tgt_cmd *); void (*free_mcmd)(struct qla_tgt_mgmt_cmd *); void (*free_session)(struct fc_port *); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index abe7f79bb789..1f0a185b2a95 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -268,6 +268,29 @@ static void tcm_qla2xxx_complete_free(struct work_struct *work) transport_generic_free_cmd(&cmd->se_cmd, 0); } +static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess) +{ + struct se_session *se_sess = sess->se_sess; + struct qla_tgt_cmd *cmd; + int tag, cpu; + + tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); + if (tag < 0) + return NULL; + + cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; + memset(cmd, 0, sizeof(struct qla_tgt_cmd)); + cmd->se_cmd.map_tag = tag; + cmd->se_cmd.map_cpu = cpu; + + return cmd; +} + +static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd) +{ + target_free_tag(cmd->sess->se_sess, &cmd->se_cmd); +} + /* * Called from qla_target_template->free_cmd(), and will call * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops @@ -1549,6 +1572,8 @@ static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { .handle_cmd = tcm_qla2xxx_handle_cmd, .handle_data = tcm_qla2xxx_handle_data, .handle_tmr = tcm_qla2xxx_handle_tmr, + .get_cmd = tcm_qla2xxx_get_cmd, + .rel_cmd = tcm_qla2xxx_rel_cmd, .free_cmd = tcm_qla2xxx_free_cmd, .free_mcmd = tcm_qla2xxx_free_mcmd, .free_session = tcm_qla2xxx_free_session, |