diff options
| -rw-r--r-- | drivers/target/sbp/sbp_target.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c index ddd3398c1561..627044f2b75e 100644 --- a/drivers/target/sbp/sbp_target.c +++ b/drivers/target/sbp/sbp_target.c @@ -209,8 +209,10 @@ static struct sbp_session *sbp_session_create( INIT_DELAYED_WORK(&sess->maint_work, session_maintenance_work); sess->guid = guid; - sess->se_sess = target_alloc_session(&tpg->se_tpg, 0, 0, TARGET_PROT_NORMAL, - guid_str, sess, NULL); + sess->se_sess = target_alloc_session(&tpg->se_tpg, 128, + sizeof(struct sbp_target_request), + TARGET_PROT_NORMAL, guid_str, + sess, NULL); if (IS_ERR(sess->se_sess)) { pr_err("failed to init se_session\n"); ret = PTR_ERR(sess->se_sess); @@ -921,6 +923,25 @@ static inline bool tgt_agent_check_active(struct sbp_target_agent *agent) return active; } +static struct sbp_target_request *sbp_mgt_get_req(struct sbp_session *sess, + struct fw_card *card, u64 next_orb) +{ + struct se_session *se_sess = sess->se_sess; + struct sbp_target_request *req; + int tag; + + tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_ATOMIC); + if (tag < 0) + return ERR_PTR(-ENOMEM); + + req = &((struct sbp_target_request *)se_sess->sess_cmd_map)[tag]; + memset(req, 0, sizeof(*req)); + req->se_cmd.map_tag = tag; + req->se_cmd.tag = next_orb; + + return req; +} + static void tgt_agent_fetch_work(struct work_struct *work) { struct sbp_target_agent *agent = @@ -932,8 +953,8 @@ static void tgt_agent_fetch_work(struct work_struct *work) u64 next_orb = agent->orb_pointer; while (next_orb && tgt_agent_check_active(agent)) { - req = kzalloc(sizeof(*req), GFP_KERNEL); - if (!req) { + req = sbp_mgt_get_req(sess, sess->card, next_orb); + if (IS_ERR(req)) { spin_lock_bh(&agent->lock); agent->state = AGENT_STATE_DEAD; spin_unlock_bh(&agent->lock); @@ -1430,9 +1451,13 @@ static int sbp_send_sense(struct sbp_target_request *req) static void sbp_free_request(struct sbp_target_request *req) { + struct se_cmd *se_cmd = &req->se_cmd; + struct se_session *se_sess = se_cmd->se_sess; + kfree(req->pg_tbl); kfree(req->cmd_buf); - kfree(req); + + percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag); } static void sbp_mgt_agent_process(struct work_struct *work) @@ -1592,7 +1617,6 @@ static void sbp_mgt_agent_rw(struct fw_card *card, rcode = RCODE_CONFLICT_ERROR; goto out; } - req = kzalloc(sizeof(*req), GFP_ATOMIC); if (!req) { rcode = RCODE_CONFLICT_ERROR; |