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scsi: ibmvfc: Make command event pool queue specific
There is currently a single command event pool per host. In anticipation of providing multiple queues add a per-queue event pool definition and reimplement the existing CRQ to use its queue defined event pool for command submission and completion. Link: https://lore.kernel.org/r/20210106201835.1053593-3-tyreld@linux.ibm.com Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler
Martin K. Petersen
parent
f8968665af
commit
e4b26f3db8
@ -852,12 +852,11 @@ static int ibmvfc_valid_event(struct ibmvfc_event_pool *pool,
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**/
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static void ibmvfc_free_event(struct ibmvfc_event *evt)
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{
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struct ibmvfc_host *vhost = evt->vhost;
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struct ibmvfc_event_pool *pool = &vhost->pool;
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struct ibmvfc_event_pool *pool = &evt->queue->evt_pool;
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BUG_ON(!ibmvfc_valid_event(pool, evt));
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BUG_ON(atomic_inc_return(&evt->free) != 1);
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list_add_tail(&evt->queue, &vhost->free);
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list_add_tail(&evt->queue_list, &evt->queue->free);
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}
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/**
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@ -898,7 +897,7 @@ static void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code)
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} else
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evt->xfer_iu->mad_common.status = cpu_to_be16(IBMVFC_MAD_DRIVER_FAILED);
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list_del(&evt->queue);
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list_del(&evt->queue_list);
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del_timer(&evt->timer);
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ibmvfc_trc_end(evt);
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evt->done(evt);
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@ -917,7 +916,7 @@ static void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code)
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struct ibmvfc_event *evt, *pos;
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ibmvfc_dbg(vhost, "Purging all requests\n");
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list_for_each_entry_safe(evt, pos, &vhost->sent, queue)
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list_for_each_entry_safe(evt, pos, &vhost->crq.sent, queue_list)
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ibmvfc_fail_request(evt, error_code);
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}
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@ -1292,10 +1291,11 @@ static void ibmvfc_set_login_info(struct ibmvfc_host *vhost)
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*
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* Returns zero on success.
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**/
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static int ibmvfc_init_event_pool(struct ibmvfc_host *vhost)
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static int ibmvfc_init_event_pool(struct ibmvfc_host *vhost,
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struct ibmvfc_queue *queue)
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{
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int i;
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struct ibmvfc_event_pool *pool = &vhost->pool;
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struct ibmvfc_event_pool *pool = &queue->evt_pool;
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ENTER;
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pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ;
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@ -1312,6 +1312,9 @@ static int ibmvfc_init_event_pool(struct ibmvfc_host *vhost)
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return -ENOMEM;
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}
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INIT_LIST_HEAD(&queue->sent);
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INIT_LIST_HEAD(&queue->free);
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for (i = 0; i < pool->size; ++i) {
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struct ibmvfc_event *evt = &pool->events[i];
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atomic_set(&evt->free, 1);
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@ -1319,8 +1322,9 @@ static int ibmvfc_init_event_pool(struct ibmvfc_host *vhost)
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evt->crq.ioba = cpu_to_be64(pool->iu_token + (sizeof(*evt->xfer_iu) * i));
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evt->xfer_iu = pool->iu_storage + i;
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evt->vhost = vhost;
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evt->queue = queue;
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evt->ext_list = NULL;
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list_add_tail(&evt->queue, &vhost->free);
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list_add_tail(&evt->queue_list, &queue->free);
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}
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LEAVE;
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@ -1332,14 +1336,15 @@ static int ibmvfc_init_event_pool(struct ibmvfc_host *vhost)
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* @vhost: ibmvfc host who owns the event pool
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*
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**/
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static void ibmvfc_free_event_pool(struct ibmvfc_host *vhost)
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static void ibmvfc_free_event_pool(struct ibmvfc_host *vhost,
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struct ibmvfc_queue *queue)
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{
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int i;
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struct ibmvfc_event_pool *pool = &vhost->pool;
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struct ibmvfc_event_pool *pool = &queue->evt_pool;
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ENTER;
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for (i = 0; i < pool->size; ++i) {
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list_del(&pool->events[i].queue);
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list_del(&pool->events[i].queue_list);
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BUG_ON(atomic_read(&pool->events[i].free) != 1);
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if (pool->events[i].ext_list)
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dma_pool_free(vhost->sg_pool,
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@ -1360,14 +1365,14 @@ static void ibmvfc_free_event_pool(struct ibmvfc_host *vhost)
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*
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* Returns a free event from the pool.
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**/
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static struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost)
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static struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_queue *queue)
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{
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struct ibmvfc_event *evt;
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BUG_ON(list_empty(&vhost->free));
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evt = list_entry(vhost->free.next, struct ibmvfc_event, queue);
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BUG_ON(list_empty(&queue->free));
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evt = list_entry(queue->free.next, struct ibmvfc_event, queue_list);
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atomic_set(&evt->free, 0);
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list_del(&evt->queue);
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list_del(&evt->queue_list);
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return evt;
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}
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@ -1512,7 +1517,7 @@ static int ibmvfc_send_event(struct ibmvfc_event *evt,
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else
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BUG();
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list_add_tail(&evt->queue, &vhost->sent);
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list_add_tail(&evt->queue_list, &evt->queue->sent);
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timer_setup(&evt->timer, ibmvfc_timeout, 0);
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if (timeout) {
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@ -1524,7 +1529,7 @@ static int ibmvfc_send_event(struct ibmvfc_event *evt,
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if ((rc = ibmvfc_send_crq(vhost, be64_to_cpu(crq_as_u64[0]),
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be64_to_cpu(crq_as_u64[1])))) {
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list_del(&evt->queue);
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list_del(&evt->queue_list);
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del_timer(&evt->timer);
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/* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY.
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@ -1747,7 +1752,7 @@ static int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd,
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}
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cmnd->result = (DID_OK << 16);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT);
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evt->cmnd = cmnd;
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cmnd->scsi_done = done;
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@ -1836,7 +1841,7 @@ static int ibmvfc_bsg_timeout(struct bsg_job *job)
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}
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vhost->aborting_passthru = 1;
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_bsg_timeout_done, IBMVFC_MAD_FORMAT);
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tmf = &evt->iu.tmf;
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@ -1894,7 +1899,7 @@ static int ibmvfc_bsg_plogi(struct ibmvfc_host *vhost, unsigned int port_id)
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if (unlikely((rc = ibmvfc_host_chkready(vhost))))
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goto unlock_out;
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT);
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plogi = &evt->iu.plogi;
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memset(plogi, 0, sizeof(*plogi));
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@ -2012,7 +2017,7 @@ static int ibmvfc_bsg_request(struct bsg_job *job)
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goto out;
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}
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT);
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mad = &evt->iu.passthru;
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@ -2096,7 +2101,7 @@ static int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc)
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spin_lock_irqsave(vhost->host->host_lock, flags);
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if (vhost->state == IBMVFC_ACTIVE) {
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT);
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tmf = ibmvfc_init_vfc_cmd(evt, sdev);
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iu = ibmvfc_get_fcp_iu(vhost, tmf);
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@ -2215,7 +2220,7 @@ static int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device,
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do {
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wait = 0;
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spin_lock_irqsave(vhost->host->host_lock, flags);
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list_for_each_entry(evt, &vhost->sent, queue) {
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list_for_each_entry(evt, &vhost->crq.sent, queue_list) {
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if (match(evt, device)) {
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evt->eh_comp = ∁
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wait++;
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@ -2229,7 +2234,7 @@ static int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device,
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if (!timeout) {
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wait = 0;
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spin_lock_irqsave(vhost->host->host_lock, flags);
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list_for_each_entry(evt, &vhost->sent, queue) {
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list_for_each_entry(evt, &vhost->crq.sent, queue_list) {
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if (match(evt, device)) {
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evt->eh_comp = NULL;
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wait++;
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@ -2274,7 +2279,7 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
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ENTER;
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spin_lock_irqsave(vhost->host->host_lock, flags);
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found_evt = NULL;
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list_for_each_entry(evt, &vhost->sent, queue) {
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list_for_each_entry(evt, &vhost->crq.sent, queue_list) {
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if (evt->cmnd && evt->cmnd->device == sdev) {
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found_evt = evt;
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break;
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@ -2289,7 +2294,7 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
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}
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if (vhost->logged_in) {
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT);
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tmf = &evt->iu.tmf;
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@ -2411,7 +2416,7 @@ static int ibmvfc_abort_task_set(struct scsi_device *sdev)
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spin_lock_irqsave(vhost->host->host_lock, flags);
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found_evt = NULL;
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list_for_each_entry(evt, &vhost->sent, queue) {
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list_for_each_entry(evt, &vhost->crq.sent, queue_list) {
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if (evt->cmnd && evt->cmnd->device == sdev) {
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found_evt = evt;
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break;
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@ -2426,7 +2431,7 @@ static int ibmvfc_abort_task_set(struct scsi_device *sdev)
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}
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if (vhost->state == IBMVFC_ACTIVE) {
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT);
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tmf = ibmvfc_init_vfc_cmd(evt, sdev);
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iu = ibmvfc_get_fcp_iu(vhost, tmf);
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@ -2917,7 +2922,7 @@ static void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost)
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* things we send. Make sure this response is to something we
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* actually sent
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*/
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if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) {
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if (unlikely(!ibmvfc_valid_event(&vhost->crq.evt_pool, evt))) {
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dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n",
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crq->ioba);
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return;
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@ -2930,7 +2935,7 @@ static void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost)
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}
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del_timer(&evt->timer);
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list_del(&evt->queue);
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list_del(&evt->queue_list);
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ibmvfc_trc_end(evt);
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evt->done(evt);
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}
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@ -3508,7 +3513,7 @@ static void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt)
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return;
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kref_get(&tgt->kref);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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vhost->discovery_threads++;
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ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT);
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evt->tgt = tgt;
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@ -3615,7 +3620,7 @@ static void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt)
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kref_get(&tgt->kref);
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tgt->logo_rcvd = 0;
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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vhost->discovery_threads++;
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ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT);
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ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT);
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@ -3690,7 +3695,7 @@ static struct ibmvfc_event *__ibmvfc_tgt_get_implicit_logout_evt(struct ibmvfc_t
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struct ibmvfc_event *evt;
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kref_get(&tgt->kref);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, done, IBMVFC_MAD_FORMAT);
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evt->tgt = tgt;
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mad = &evt->iu.implicit_logout;
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@ -3855,7 +3860,7 @@ static void ibmvfc_tgt_move_login(struct ibmvfc_target *tgt)
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return;
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kref_get(&tgt->kref);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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vhost->discovery_threads++;
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ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT);
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ibmvfc_init_event(evt, ibmvfc_tgt_move_login_done, IBMVFC_MAD_FORMAT);
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@ -4021,7 +4026,7 @@ static void ibmvfc_adisc_timeout(struct timer_list *t)
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vhost->abort_threads++;
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kref_get(&tgt->kref);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT);
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evt->tgt = tgt;
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@ -4071,7 +4076,7 @@ static void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt)
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return;
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kref_get(&tgt->kref);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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vhost->discovery_threads++;
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ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT);
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evt->tgt = tgt;
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@ -4174,7 +4179,7 @@ static void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt)
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return;
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kref_get(&tgt->kref);
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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vhost->discovery_threads++;
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evt->tgt = tgt;
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ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT);
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@ -4341,7 +4346,7 @@ static void ibmvfc_discover_targets_done(struct ibmvfc_event *evt)
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static void ibmvfc_discover_targets(struct ibmvfc_host *vhost)
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{
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struct ibmvfc_discover_targets *mad;
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struct ibmvfc_event *evt = ibmvfc_get_event(vhost);
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struct ibmvfc_event *evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT);
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mad = &evt->iu.discover_targets;
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@ -4454,7 +4459,7 @@ static void ibmvfc_npiv_login_done(struct ibmvfc_event *evt)
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static void ibmvfc_npiv_login(struct ibmvfc_host *vhost)
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{
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struct ibmvfc_npiv_login_mad *mad;
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struct ibmvfc_event *evt = ibmvfc_get_event(vhost);
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struct ibmvfc_event *evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_gather_partition_info(vhost);
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ibmvfc_set_login_info(vhost);
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@ -4491,7 +4496,7 @@ static void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt)
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switch (mad_status) {
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case IBMVFC_MAD_SUCCESS:
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if (list_empty(&vhost->sent) &&
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if (list_empty(&vhost->crq.sent) &&
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vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) {
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ibmvfc_init_host(vhost);
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return;
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@ -4519,7 +4524,7 @@ static void ibmvfc_npiv_logout(struct ibmvfc_host *vhost)
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struct ibmvfc_npiv_logout_mad *mad;
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struct ibmvfc_event *evt;
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evt = ibmvfc_get_event(vhost);
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evt = ibmvfc_get_event(&vhost->crq);
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ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT);
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mad = &evt->iu.npiv_logout;
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@ -5208,8 +5213,6 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
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shost->unique_id = shost->host_no;
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vhost = shost_priv(shost);
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INIT_LIST_HEAD(&vhost->sent);
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INIT_LIST_HEAD(&vhost->free);
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INIT_LIST_HEAD(&vhost->targets);
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sprintf(vhost->name, IBMVFC_NAME);
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vhost->host = shost;
|
||||
@ -5241,7 +5244,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
|
||||
goto kill_kthread;
|
||||
}
|
||||
|
||||
if ((rc = ibmvfc_init_event_pool(vhost))) {
|
||||
if ((rc = ibmvfc_init_event_pool(vhost, &vhost->crq))) {
|
||||
dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc);
|
||||
goto release_crq;
|
||||
}
|
||||
@ -5271,7 +5274,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
|
||||
remove_shost:
|
||||
scsi_remove_host(shost);
|
||||
release_event_pool:
|
||||
ibmvfc_free_event_pool(vhost);
|
||||
ibmvfc_free_event_pool(vhost, &vhost->crq);
|
||||
release_crq:
|
||||
ibmvfc_release_crq_queue(vhost);
|
||||
kill_kthread:
|
||||
@ -5313,7 +5316,7 @@ static int ibmvfc_remove(struct vio_dev *vdev)
|
||||
spin_lock_irqsave(vhost->host->host_lock, flags);
|
||||
ibmvfc_purge_requests(vhost, DID_ERROR);
|
||||
spin_unlock_irqrestore(vhost->host->host_lock, flags);
|
||||
ibmvfc_free_event_pool(vhost);
|
||||
ibmvfc_free_event_pool(vhost, &vhost->crq);
|
||||
|
||||
ibmvfc_free_mem(vhost);
|
||||
spin_lock(&ibmvfc_driver_lock);
|
||||
|
||||
@ -726,8 +726,9 @@ struct ibmvfc_target {
|
||||
|
||||
/* a unit of work for the hosting partition */
|
||||
struct ibmvfc_event {
|
||||
struct list_head queue;
|
||||
struct list_head queue_list;
|
||||
struct ibmvfc_host *vhost;
|
||||
struct ibmvfc_queue *queue;
|
||||
struct ibmvfc_target *tgt;
|
||||
struct scsi_cmnd *cmnd;
|
||||
atomic_t free;
|
||||
@ -767,6 +768,10 @@ struct ibmvfc_queue {
|
||||
dma_addr_t msg_token;
|
||||
enum ibmvfc_msg_fmt fmt;
|
||||
int size, cur;
|
||||
|
||||
struct ibmvfc_event_pool evt_pool;
|
||||
struct list_head sent;
|
||||
struct list_head free;
|
||||
};
|
||||
|
||||
enum ibmvfc_host_action {
|
||||
@ -808,10 +813,7 @@ struct ibmvfc_host {
|
||||
u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
|
||||
int num_targets;
|
||||
struct list_head targets;
|
||||
struct list_head sent;
|
||||
struct list_head free;
|
||||
struct device *dev;
|
||||
struct ibmvfc_event_pool pool;
|
||||
struct dma_pool *sg_pool;
|
||||
mempool_t *tgt_pool;
|
||||
struct ibmvfc_queue crq;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user