#include "iscsi_iser.h"
+MODULE_DESCRIPTION("iSER (iSCSI Extensions for RDMA) Datamover");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Alex Nezhinsky, Dan Bar Dov, Or Gerlitz");
+MODULE_VERSION(DRV_VER);
+
static struct scsi_host_template iscsi_iser_sht;
static struct iscsi_transport iscsi_iser_transport;
static struct scsi_transport_template *iscsi_iser_scsi_transport;
-
-static unsigned int iscsi_max_lun = 512;
-module_param_named(max_lun, iscsi_max_lun, uint, S_IRUGO);
+static struct workqueue_struct *release_wq;
+struct iser_global ig;
int iser_debug_level = 0;
-bool iser_pi_enable = false;
-int iser_pi_guard = 1;
+module_param_named(debug_level, iser_debug_level, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0 (default:disabled)");
-MODULE_DESCRIPTION("iSER (iSCSI Extensions for RDMA) Datamover");
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_AUTHOR("Alex Nezhinsky, Dan Bar Dov, Or Gerlitz");
-MODULE_VERSION(DRV_VER);
+static unsigned int iscsi_max_lun = 512;
+module_param_named(max_lun, iscsi_max_lun, uint, S_IRUGO);
+MODULE_PARM_DESC(max_lun, "Max LUNs to allow per session (default:512");
-module_param_named(debug_level, iser_debug_level, int, 0644);
-MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0 (default:disabled)");
+unsigned int iser_max_sectors = ISER_DEF_MAX_SECTORS;
+module_param_named(max_sectors, iser_max_sectors, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(max_sectors, "Max number of sectors in a single scsi command (default:1024");
-module_param_named(pi_enable, iser_pi_enable, bool, 0644);
+bool iser_pi_enable = false;
+module_param_named(pi_enable, iser_pi_enable, bool, S_IRUGO);
MODULE_PARM_DESC(pi_enable, "Enable T10-PI offload support (default:disabled)");
-module_param_named(pi_guard, iser_pi_guard, int, 0644);
+int iser_pi_guard;
+module_param_named(pi_guard, iser_pi_guard, int, S_IRUGO);
MODULE_PARM_DESC(pi_guard, "T10-PI guard_type [deprecated]");
-static struct workqueue_struct *release_wq;
-struct iser_global ig;
-
/*
* iscsi_iser_recv() - Process a successfull recv completion
* @conn: iscsi connection
goto out;
}
+ tx_desc->wr_idx = 0;
+ tx_desc->mapped = true;
tx_desc->dma_addr = dma_addr;
tx_desc->tx_sg[0].addr = tx_desc->dma_addr;
tx_desc->tx_sg[0].length = ISER_HEADERS_LEN;
- tx_desc->tx_sg[0].lkey = device->mr->lkey;
+ tx_desc->tx_sg[0].lkey = device->pd->local_dma_lkey;
iser_task->iser_conn = iser_conn;
out:
static void iscsi_iser_cleanup_task(struct iscsi_task *task)
{
struct iscsi_iser_task *iser_task = task->dd_data;
- struct iser_tx_desc *tx_desc = &iser_task->desc;
- struct iser_conn *iser_conn = task->conn->dd_data;
+ struct iser_tx_desc *tx_desc = &iser_task->desc;
+ struct iser_conn *iser_conn = task->conn->dd_data;
struct iser_device *device = iser_conn->ib_conn.device;
/* DEVICE_REMOVAL event might have already released the device */
if (!device)
return;
- ib_dma_unmap_single(device->ib_device,
- tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE);
+ if (likely(tx_desc->mapped)) {
+ ib_dma_unmap_single(device->ib_device, tx_desc->dma_addr,
+ ISER_HEADERS_LEN, DMA_TO_DEVICE);
+ tx_desc->mapped = false;
+ }
/* mgmt tasks do not need special cleanup */
if (!task->sc)
if (ep) {
iser_conn = ep->dd_data;
max_cmds = iser_conn->max_cmds;
+ shost->sg_tablesize = iser_conn->scsi_sg_tablesize;
+ shost->max_sectors = iser_conn->scsi_max_sectors;
mutex_lock(&iser_conn->state_mutex);
if (iser_conn->state != ISER_CONN_UP) {
SHOST_DIX_GUARD_CRC);
}
+ /*
+ * Limit the sg_tablesize and max_sectors based on the device
+ * max fastreg page list length.
+ */
+ shost->sg_tablesize = min_t(unsigned short, shost->sg_tablesize,
+ ib_conn->device->dev_attr.max_fast_reg_page_list_len);
+ shost->max_sectors = min_t(unsigned int,
+ 1024, (shost->sg_tablesize * PAGE_SIZE) >> 9);
+
if (iscsi_host_add(shost,
ib_conn->device->ib_device->dma_device)) {
mutex_unlock(&iser_conn->state_mutex);
stats->r2t_pdus = conn->r2t_pdus_cnt; /* always 0 */
stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
- stats->custom_length = 4;
- strcpy(stats->custom[0].desc, "qp_tx_queue_full");
- stats->custom[0].value = 0; /* TB iser_conn->qp_tx_queue_full; */
- strcpy(stats->custom[1].desc, "fmr_map_not_avail");
- stats->custom[1].value = 0; /* TB iser_conn->fmr_map_not_avail */;
- strcpy(stats->custom[2].desc, "eh_abort_cnt");
- stats->custom[2].value = conn->eh_abort_cnt;
- strcpy(stats->custom[3].desc, "fmr_unalign_cnt");
- stats->custom[3].value = conn->fmr_unalign_cnt;
+ stats->custom_length = 1;
+ strcpy(stats->custom[0].desc, "fmr_unalign_cnt");
+ stats->custom[0].value = conn->fmr_unalign_cnt;
}
static int iscsi_iser_get_ep_param(struct iscsi_endpoint *ep,
static int
iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
{
- struct iser_conn *iser_conn;
+ struct iser_conn *iser_conn = ep->dd_data;
int rc;
- iser_conn = ep->dd_data;
rc = wait_for_completion_interruptible_timeout(&iser_conn->up_completion,
msecs_to_jiffies(timeout_ms));
/* if conn establishment failed, return error code to iscsi */
mutex_unlock(&iser_conn->state_mutex);
}
- iser_info("ib conn %p rc = %d\n", iser_conn, rc);
+ iser_info("iser conn %p rc = %d\n", iser_conn, rc);
if (rc > 0)
return 1; /* success, this is the equivalent of POLLOUT */
static void
iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
{
- struct iser_conn *iser_conn;
+ struct iser_conn *iser_conn = ep->dd_data;
- iser_conn = ep->dd_data;
- iser_info("ep %p iser conn %p state %d\n",
- ep, iser_conn, iser_conn->state);
+ iser_info("ep %p iser conn %p\n", ep, iser_conn);
mutex_lock(&iser_conn->state_mutex);
iser_conn_terminate(iser_conn);
mutex_unlock(&iser_conn->state_mutex);
iser_conn_release(iser_conn);
}
+
iscsi_destroy_endpoint(ep);
}
.name = "iSCSI Initiator over iSER",
.queuecommand = iscsi_queuecommand,
.change_queue_depth = scsi_change_queue_depth,
- .sg_tablesize = ISCSI_ISER_SG_TABLESIZE,
- .max_sectors = 1024,
+ .sg_tablesize = ISCSI_ISER_DEF_SG_TABLESIZE,
+ .max_sectors = ISER_DEF_MAX_SECTORS,
.cmd_per_lun = ISER_DEF_CMD_PER_LUN,
.eh_abort_handler = iscsi_eh_abort,
.eh_device_reset_handler= iscsi_eh_device_reset,
if (!connlist_empty) {
iser_err("Error cleanup stage completed but we still have iser "
- "connections, destroying them anyway.\n");
+ "connections, destroying them anyway\n");
list_for_each_entry_safe(iser_conn, n, &ig.connlist,
conn_list) {
iser_conn_release(iser_conn);
projects / cascardo / linux.git / blobdiff