diff options
Diffstat (limited to 'drivers/infiniband/ulp/isert/ib_isert.c')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 67f65dcb15a6..2ba27221ea85 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -28,6 +28,18 @@ static int isert_debug_level; module_param_named(debug_level, isert_debug_level, int, 0644); MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0 (default:0)"); +static int isert_sg_tablesize_set(const char *val, + const struct kernel_param *kp); +static const struct kernel_param_ops sg_tablesize_ops = { + .set = isert_sg_tablesize_set, + .get = param_get_int, +}; + +static int isert_sg_tablesize = ISCSI_ISER_DEF_SG_TABLESIZE; +module_param_cb(sg_tablesize, &sg_tablesize_ops, &isert_sg_tablesize, 0644); +MODULE_PARM_DESC(sg_tablesize, + "Number of gather/scatter entries in a single scsi command, should >= 128 (default: 256, max: 4096)"); + static DEFINE_MUTEX(device_list_mutex); static LIST_HEAD(device_list); static struct workqueue_struct *isert_comp_wq; @@ -47,6 +59,19 @@ static void isert_send_done(struct ib_cq *cq, struct ib_wc *wc); static void isert_login_recv_done(struct ib_cq *cq, struct ib_wc *wc); static void isert_login_send_done(struct ib_cq *cq, struct ib_wc *wc); +static int isert_sg_tablesize_set(const char *val, const struct kernel_param *kp) +{ + int n = 0, ret; + + ret = kstrtoint(val, 10, &n); + if (ret != 0 || n < ISCSI_ISER_MIN_SG_TABLESIZE || + n > ISCSI_ISER_MAX_SG_TABLESIZE) + return -EINVAL; + + return param_set_int(val, kp); +} + + static inline bool isert_prot_cmd(struct isert_conn *conn, struct se_cmd *cmd) { @@ -101,7 +126,7 @@ isert_create_qp(struct isert_conn *isert_conn, attr.cap.max_send_wr = ISERT_QP_MAX_REQ_DTOS + 1; attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS + 1; factor = rdma_rw_mr_factor(device->ib_device, cma_id->port_num, - ISCSI_ISER_MAX_SG_TABLESIZE); + isert_sg_tablesize); attr.cap.max_rdma_ctxs = ISCSI_DEF_XMIT_CMDS_MAX * factor; attr.cap.max_send_sge = device->ib_device->attrs.max_send_sge; attr.cap.max_recv_sge = 1; @@ -1076,7 +1101,7 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn, sequence_cmd: rc = iscsit_sequence_cmd(conn, cmd, buf, hdr->cmdsn); - if (!rc && dump_payload == false && unsol_data) + if (!rc && !dump_payload && unsol_data) iscsit_set_unsolicited_dataout(cmd); else if (dump_payload && imm_data) target_put_sess_cmd(&cmd->se_cmd); |