Lines Matching full:queue
89 /* Queue name is interface name with "-qNNN" appended */
92 /* IRQ name is queue name with "-tx" or "-rx" appended */
106 unsigned int id; /* Queue ID, 0-based */
161 /* Multi-queue support */
210 static struct sk_buff *xennet_get_rx_skb(struct netfront_queue *queue, in xennet_get_rx_skb() argument
214 struct sk_buff *skb = queue->rx_skbs[i]; in xennet_get_rx_skb()
215 queue->rx_skbs[i] = NULL; in xennet_get_rx_skb()
219 static grant_ref_t xennet_get_rx_ref(struct netfront_queue *queue, in xennet_get_rx_ref() argument
223 grant_ref_t ref = queue->grant_rx_ref[i]; in xennet_get_rx_ref()
224 queue->grant_rx_ref[i] = GRANT_INVALID_REF; in xennet_get_rx_ref()
240 struct netfront_queue *queue = from_timer(queue, t, rx_refill_timer); in rx_refill_timeout() local
241 napi_schedule(&queue->napi); in rx_refill_timeout()
244 static int netfront_tx_slot_available(struct netfront_queue *queue) in netfront_tx_slot_available() argument
246 return (queue->tx.req_prod_pvt - queue->tx.rsp_cons) < in netfront_tx_slot_available()
250 static void xennet_maybe_wake_tx(struct netfront_queue *queue) in xennet_maybe_wake_tx() argument
252 struct net_device *dev = queue->info->netdev; in xennet_maybe_wake_tx()
253 struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, queue->id); in xennet_maybe_wake_tx()
256 netfront_tx_slot_available(queue) && in xennet_maybe_wake_tx()
258 netif_tx_wake_queue(netdev_get_tx_queue(dev, queue->id)); in xennet_maybe_wake_tx()
262 static struct sk_buff *xennet_alloc_one_rx_buffer(struct netfront_queue *queue) in xennet_alloc_one_rx_buffer() argument
267 skb = __netdev_alloc_skb(queue->info->netdev, in xennet_alloc_one_rx_buffer()
273 page = page_pool_dev_alloc_pages(queue->page_pool); in xennet_alloc_one_rx_buffer()
282 skb->dev = queue->info->netdev; in xennet_alloc_one_rx_buffer()
288 static void xennet_alloc_rx_buffers(struct netfront_queue *queue) in xennet_alloc_rx_buffers() argument
290 RING_IDX req_prod = queue->rx.req_prod_pvt; in xennet_alloc_rx_buffers()
294 if (unlikely(!netif_carrier_ok(queue->info->netdev))) in xennet_alloc_rx_buffers()
297 for (req_prod = queue->rx.req_prod_pvt; in xennet_alloc_rx_buffers()
298 req_prod - queue->rx.rsp_cons < NET_RX_RING_SIZE; in xennet_alloc_rx_buffers()
306 skb = xennet_alloc_one_rx_buffer(queue); in xennet_alloc_rx_buffers()
314 BUG_ON(queue->rx_skbs[id]); in xennet_alloc_rx_buffers()
315 queue->rx_skbs[id] = skb; in xennet_alloc_rx_buffers()
317 ref = gnttab_claim_grant_reference(&queue->gref_rx_head); in xennet_alloc_rx_buffers()
319 queue->grant_rx_ref[id] = ref; in xennet_alloc_rx_buffers()
323 req = RING_GET_REQUEST(&queue->rx, req_prod); in xennet_alloc_rx_buffers()
325 queue->info->xbdev->otherend_id, in xennet_alloc_rx_buffers()
332 queue->rx.req_prod_pvt = req_prod; in xennet_alloc_rx_buffers()
339 if (req_prod - queue->rx.rsp_cons < NET_RX_SLOTS_MIN || in xennet_alloc_rx_buffers()
341 mod_timer(&queue->rx_refill_timer, jiffies + (HZ/10)); in xennet_alloc_rx_buffers()
345 RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->rx, notify); in xennet_alloc_rx_buffers()
347 notify_remote_via_irq(queue->rx_irq); in xennet_alloc_rx_buffers()
355 struct netfront_queue *queue = NULL; in xennet_open() local
361 queue = &np->queues[i]; in xennet_open()
362 napi_enable(&queue->napi); in xennet_open()
364 spin_lock_bh(&queue->rx_lock); in xennet_open()
366 xennet_alloc_rx_buffers(queue); in xennet_open()
367 queue->rx.sring->rsp_event = queue->rx.rsp_cons + 1; in xennet_open()
368 if (RING_HAS_UNCONSUMED_RESPONSES(&queue->rx)) in xennet_open()
369 napi_schedule(&queue->napi); in xennet_open()
371 spin_unlock_bh(&queue->rx_lock); in xennet_open()
379 static void xennet_tx_buf_gc(struct netfront_queue *queue) in xennet_tx_buf_gc() argument
385 const struct device *dev = &queue->info->netdev->dev; in xennet_tx_buf_gc()
387 BUG_ON(!netif_carrier_ok(queue->info->netdev)); in xennet_tx_buf_gc()
390 prod = queue->tx.sring->rsp_prod; in xennet_tx_buf_gc()
391 if (RING_RESPONSE_PROD_OVERFLOW(&queue->tx, prod)) { in xennet_tx_buf_gc()
393 prod - queue->tx.rsp_cons); in xennet_tx_buf_gc()
398 for (cons = queue->tx.rsp_cons; cons != prod; cons++) { in xennet_tx_buf_gc()
401 RING_COPY_RESPONSE(&queue->tx, cons, &txrsp); in xennet_tx_buf_gc()
406 if (id >= RING_SIZE(&queue->tx)) { in xennet_tx_buf_gc()
412 if (queue->tx_link[id] != TX_PENDING) { in xennet_tx_buf_gc()
418 queue->tx_link[id] = TX_LINK_NONE; in xennet_tx_buf_gc()
419 skb = queue->tx_skbs[id]; in xennet_tx_buf_gc()
420 queue->tx_skbs[id] = NULL; in xennet_tx_buf_gc()
422 queue->grant_tx_ref[id]) != 0)) { in xennet_tx_buf_gc()
428 queue->grant_tx_ref[id], GNTMAP_readonly); in xennet_tx_buf_gc()
430 &queue->gref_tx_head, queue->grant_tx_ref[id]); in xennet_tx_buf_gc()
431 queue->grant_tx_ref[id] = GRANT_INVALID_REF; in xennet_tx_buf_gc()
432 queue->grant_tx_page[id] = NULL; in xennet_tx_buf_gc()
433 add_id_to_list(&queue->tx_skb_freelist, queue->tx_link, id); in xennet_tx_buf_gc()
437 queue->tx.rsp_cons = prod; in xennet_tx_buf_gc()
439 RING_FINAL_CHECK_FOR_RESPONSES(&queue->tx, more_to_do); in xennet_tx_buf_gc()
442 xennet_maybe_wake_tx(queue); in xennet_tx_buf_gc()
447 queue->info->broken = true; in xennet_tx_buf_gc()
452 struct netfront_queue *queue; member
469 struct netfront_queue *queue = info->queue; in xennet_tx_setup_grant() local
472 id = get_id_from_list(&queue->tx_skb_freelist, queue->tx_link); in xennet_tx_setup_grant()
473 tx = RING_GET_REQUEST(&queue->tx, queue->tx.req_prod_pvt++); in xennet_tx_setup_grant()
474 ref = gnttab_claim_grant_reference(&queue->gref_tx_head); in xennet_tx_setup_grant()
477 gnttab_grant_foreign_access_ref(ref, queue->info->xbdev->otherend_id, in xennet_tx_setup_grant()
480 queue->tx_skbs[id] = skb; in xennet_tx_setup_grant()
481 queue->grant_tx_page[id] = page; in xennet_tx_setup_grant()
482 queue->grant_tx_ref[id] = ref; in xennet_tx_setup_grant()
493 * Put the request in the pending queue, it will be set to be pending in xennet_tx_setup_grant()
496 add_id_to_list(&queue->tx_pend_queue, queue->tx_link, id); in xennet_tx_setup_grant()
579 /* First, check if there is only one queue */ in xennet_select_queue()
590 static void xennet_mark_tx_pending(struct netfront_queue *queue) in xennet_mark_tx_pending() argument
594 while ((i = get_id_from_list(&queue->tx_pend_queue, queue->tx_link)) != in xennet_mark_tx_pending()
596 queue->tx_link[i] = TX_PENDING; in xennet_mark_tx_pending()
600 struct netfront_queue *queue, in xennet_xdp_xmit_one() argument
606 .queue = queue, in xennet_xdp_xmit_one()
616 xennet_mark_tx_pending(queue); in xennet_xdp_xmit_one()
618 RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->tx, notify); in xennet_xdp_xmit_one()
620 notify_remote_via_irq(queue->tx_irq); in xennet_xdp_xmit_one()
627 xennet_tx_buf_gc(queue); in xennet_xdp_xmit_one()
637 struct netfront_queue *queue = NULL; in xennet_xdp_xmit() local
647 queue = &np->queues[smp_processor_id() % num_queues]; in xennet_xdp_xmit()
649 spin_lock_irqsave(&queue->tx_lock, irq_flags); in xennet_xdp_xmit()
655 if (xennet_xdp_xmit_one(dev, queue, xdpf)) in xennet_xdp_xmit()
659 spin_unlock_irqrestore(&queue->tx_lock, irq_flags); in xennet_xdp_xmit()
679 struct netfront_queue *queue = NULL; in xennet_start_xmit() local
690 /* Determine which queue to transmit this SKB on */ in xennet_start_xmit()
692 queue = &np->queues[queue_index]; in xennet_start_xmit()
730 spin_lock_irqsave(&queue->tx_lock, flags); in xennet_start_xmit()
735 spin_unlock_irqrestore(&queue->tx_lock, flags); in xennet_start_xmit()
740 info.queue = queue; in xennet_start_xmit()
764 RING_GET_REQUEST(&queue->tx, queue->tx.req_prod_pvt++); in xennet_start_xmit()
796 xennet_mark_tx_pending(queue); in xennet_start_xmit()
798 RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->tx, notify); in xennet_start_xmit()
800 notify_remote_via_irq(queue->tx_irq); in xennet_start_xmit()
808 xennet_tx_buf_gc(queue); in xennet_start_xmit()
810 if (!netfront_tx_slot_available(queue)) in xennet_start_xmit()
811 netif_tx_stop_queue(netdev_get_tx_queue(dev, queue->id)); in xennet_start_xmit()
813 spin_unlock_irqrestore(&queue->tx_lock, flags); in xennet_start_xmit()
828 struct netfront_queue *queue; in xennet_close() local
831 queue = &np->queues[i]; in xennet_close()
832 napi_disable(&queue->napi); in xennet_close()
837 static void xennet_move_rx_slot(struct netfront_queue *queue, struct sk_buff *skb, in xennet_move_rx_slot() argument
840 int new = xennet_rxidx(queue->rx.req_prod_pvt); in xennet_move_rx_slot()
842 BUG_ON(queue->rx_skbs[new]); in xennet_move_rx_slot()
843 queue->rx_skbs[new] = skb; in xennet_move_rx_slot()
844 queue->grant_rx_ref[new] = ref; in xennet_move_rx_slot()
845 RING_GET_REQUEST(&queue->rx, queue->rx.req_prod_pvt)->id = new; in xennet_move_rx_slot()
846 RING_GET_REQUEST(&queue->rx, queue->rx.req_prod_pvt)->gref = ref; in xennet_move_rx_slot()
847 queue->rx.req_prod_pvt++; in xennet_move_rx_slot()
850 static int xennet_get_extras(struct netfront_queue *queue, in xennet_get_extras() argument
856 struct device *dev = &queue->info->netdev->dev; in xennet_get_extras()
857 RING_IDX cons = queue->rx.rsp_cons; in xennet_get_extras()
871 RING_COPY_RESPONSE(&queue->rx, ++cons, &extra); in xennet_get_extras()
883 skb = xennet_get_rx_skb(queue, cons); in xennet_get_extras()
884 ref = xennet_get_rx_ref(queue, cons); in xennet_get_extras()
885 xennet_move_rx_slot(queue, skb, ref); in xennet_get_extras()
888 queue->rx.rsp_cons = cons; in xennet_get_extras()
892 static u32 xennet_run_xdp(struct netfront_queue *queue, struct page *pdata, in xennet_run_xdp() argument
902 &queue->xdp_rxq); in xennet_run_xdp()
911 err = xennet_xdp_xmit(queue->info->netdev, 1, &xdpf, 0); in xennet_run_xdp()
915 trace_xdp_exception(queue->info->netdev, prog, act); in xennet_run_xdp()
919 err = xdp_do_redirect(queue->info->netdev, xdp, prog); in xennet_run_xdp()
922 trace_xdp_exception(queue->info->netdev, prog, act); in xennet_run_xdp()
929 trace_xdp_exception(queue->info->netdev, prog, act); in xennet_run_xdp()
939 static int xennet_get_responses(struct netfront_queue *queue, in xennet_get_responses() argument
946 RING_IDX cons = queue->rx.rsp_cons; in xennet_get_responses()
947 struct sk_buff *skb = xennet_get_rx_skb(queue, cons); in xennet_get_responses()
949 grant_ref_t ref = xennet_get_rx_ref(queue, cons); in xennet_get_responses()
950 struct device *dev = &queue->info->netdev->dev; in xennet_get_responses()
959 err = xennet_get_extras(queue, extras, rp); in xennet_get_responses()
968 cons = queue->rx.rsp_cons; in xennet_get_responses()
977 xennet_move_rx_slot(queue, skb, ref); in xennet_get_responses()
998 gnttab_release_grant_reference(&queue->gref_rx_head, ref); in xennet_get_responses()
1001 xdp_prog = rcu_dereference(queue->xdp_prog); in xennet_get_responses()
1005 verdict = xennet_run_xdp(queue, in xennet_get_responses()
1028 RING_COPY_RESPONSE(&queue->rx, cons + slots, &rx_local); in xennet_get_responses()
1030 skb = xennet_get_rx_skb(queue, cons + slots); in xennet_get_responses()
1031 ref = xennet_get_rx_ref(queue, cons + slots); in xennet_get_responses()
1042 queue->rx.rsp_cons = cons + slots; in xennet_get_responses()
1076 static int xennet_fill_frags(struct netfront_queue *queue, in xennet_fill_frags() argument
1080 RING_IDX cons = queue->rx.rsp_cons; in xennet_fill_frags()
1087 RING_COPY_RESPONSE(&queue->rx, ++cons, &rx); in xennet_fill_frags()
1096 queue->rx.rsp_cons = ++cons + skb_queue_len(list); in xennet_fill_frags()
1109 queue->rx.rsp_cons = cons; in xennet_fill_frags()
1138 static int handle_incoming_queue(struct netfront_queue *queue, in handle_incoming_queue() argument
1141 struct netfront_stats *rx_stats = this_cpu_ptr(queue->info->rx_stats); in handle_incoming_queue()
1152 skb->protocol = eth_type_trans(skb, queue->info->netdev); in handle_incoming_queue()
1155 if (checksum_setup(queue->info->netdev, skb)) { in handle_incoming_queue()
1158 queue->info->netdev->stats.rx_errors++; in handle_incoming_queue()
1168 napi_gro_receive(&queue->napi, skb); in handle_incoming_queue()
1176 struct netfront_queue *queue = container_of(napi, struct netfront_queue, napi); in xennet_poll() local
1177 struct net_device *dev = queue->info->netdev; in xennet_poll()
1190 spin_lock(&queue->rx_lock); in xennet_poll()
1196 rp = queue->rx.sring->rsp_prod; in xennet_poll()
1197 if (RING_RESPONSE_PROD_OVERFLOW(&queue->rx, rp)) { in xennet_poll()
1199 rp - queue->rx.rsp_cons); in xennet_poll()
1200 queue->info->broken = true; in xennet_poll()
1201 spin_unlock(&queue->rx_lock); in xennet_poll()
1206 i = queue->rx.rsp_cons; in xennet_poll()
1209 RING_COPY_RESPONSE(&queue->rx, i, rx); in xennet_poll()
1212 err = xennet_get_responses(queue, &rinfo, rp, &tmpq, in xennet_poll()
1220 i = queue->rx.rsp_cons; in xennet_poll()
1232 queue->rx.rsp_cons += skb_queue_len(&tmpq); in xennet_poll()
1246 if (unlikely(xennet_fill_frags(queue, skb, &tmpq))) in xennet_poll()
1256 i = ++queue->rx.rsp_cons; in xennet_poll()
1264 work_done -= handle_incoming_queue(queue, &rxq); in xennet_poll()
1266 xennet_alloc_rx_buffers(queue); in xennet_poll()
1273 RING_FINAL_CHECK_FOR_RESPONSES(&queue->rx, more_to_do); in xennet_poll()
1278 spin_unlock(&queue->rx_lock); in xennet_poll()
1327 static void xennet_release_tx_bufs(struct netfront_queue *queue) in xennet_release_tx_bufs() argument
1334 if (!queue->tx_skbs[i]) in xennet_release_tx_bufs()
1337 skb = queue->tx_skbs[i]; in xennet_release_tx_bufs()
1338 queue->tx_skbs[i] = NULL; in xennet_release_tx_bufs()
1339 get_page(queue->grant_tx_page[i]); in xennet_release_tx_bufs()
1340 gnttab_end_foreign_access(queue->grant_tx_ref[i], in xennet_release_tx_bufs()
1342 (unsigned long)page_address(queue->grant_tx_page[i])); in xennet_release_tx_bufs()
1343 queue->grant_tx_page[i] = NULL; in xennet_release_tx_bufs()
1344 queue->grant_tx_ref[i] = GRANT_INVALID_REF; in xennet_release_tx_bufs()
1345 add_id_to_list(&queue->tx_skb_freelist, queue->tx_link, i); in xennet_release_tx_bufs()
1350 static void xennet_release_rx_bufs(struct netfront_queue *queue) in xennet_release_rx_bufs() argument
1354 spin_lock_bh(&queue->rx_lock); in xennet_release_rx_bufs()
1360 skb = queue->rx_skbs[id]; in xennet_release_rx_bufs()
1364 ref = queue->grant_rx_ref[id]; in xennet_release_rx_bufs()
1376 queue->grant_rx_ref[id] = GRANT_INVALID_REF; in xennet_release_rx_bufs()
1381 spin_unlock_bh(&queue->rx_lock); in xennet_release_rx_bufs()
1422 struct netfront_queue *queue = dev_id; in xennet_tx_interrupt() local
1425 if (queue->info->broken) in xennet_tx_interrupt()
1428 spin_lock_irqsave(&queue->tx_lock, flags); in xennet_tx_interrupt()
1429 xennet_tx_buf_gc(queue); in xennet_tx_interrupt()
1430 spin_unlock_irqrestore(&queue->tx_lock, flags); in xennet_tx_interrupt()
1437 struct netfront_queue *queue = dev_id; in xennet_rx_interrupt() local
1438 struct net_device *dev = queue->info->netdev; in xennet_rx_interrupt()
1440 if (queue->info->broken) in xennet_rx_interrupt()
1444 RING_HAS_UNCONSUMED_RESPONSES(&queue->rx))) in xennet_rx_interrupt()
1445 napi_schedule(&queue->napi); in xennet_rx_interrupt()
1460 /* Poll each queue */ in xennet_poll_controller()
1687 struct netfront_queue *queue = &info->queues[i]; in xennet_disconnect_backend() local
1689 del_timer_sync(&queue->rx_refill_timer); in xennet_disconnect_backend()
1691 if (queue->tx_irq && (queue->tx_irq == queue->rx_irq)) in xennet_disconnect_backend()
1692 unbind_from_irqhandler(queue->tx_irq, queue); in xennet_disconnect_backend()
1693 if (queue->tx_irq && (queue->tx_irq != queue->rx_irq)) { in xennet_disconnect_backend()
1694 unbind_from_irqhandler(queue->tx_irq, queue); in xennet_disconnect_backend()
1695 unbind_from_irqhandler(queue->rx_irq, queue); in xennet_disconnect_backend()
1697 queue->tx_evtchn = queue->rx_evtchn = 0; in xennet_disconnect_backend()
1698 queue->tx_irq = queue->rx_irq = 0; in xennet_disconnect_backend()
1701 napi_synchronize(&queue->napi); in xennet_disconnect_backend()
1703 xennet_release_tx_bufs(queue); in xennet_disconnect_backend()
1704 xennet_release_rx_bufs(queue); in xennet_disconnect_backend()
1705 gnttab_free_grant_references(queue->gref_tx_head); in xennet_disconnect_backend()
1706 gnttab_free_grant_references(queue->gref_rx_head); in xennet_disconnect_backend()
1709 xennet_end_access(queue->tx_ring_ref, queue->tx.sring); in xennet_disconnect_backend()
1710 xennet_end_access(queue->rx_ring_ref, queue->rx.sring); in xennet_disconnect_backend()
1712 queue->tx_ring_ref = GRANT_INVALID_REF; in xennet_disconnect_backend()
1713 queue->rx_ring_ref = GRANT_INVALID_REF; in xennet_disconnect_backend()
1714 queue->tx.sring = NULL; in xennet_disconnect_backend()
1715 queue->rx.sring = NULL; in xennet_disconnect_backend()
1717 page_pool_destroy(queue->page_pool); in xennet_disconnect_backend()
1763 static int setup_netfront_single(struct netfront_queue *queue) in setup_netfront_single() argument
1767 err = xenbus_alloc_evtchn(queue->info->xbdev, &queue->tx_evtchn); in setup_netfront_single()
1771 err = bind_evtchn_to_irqhandler(queue->tx_evtchn, in setup_netfront_single()
1773 0, queue->info->netdev->name, queue); in setup_netfront_single()
1776 queue->rx_evtchn = queue->tx_evtchn; in setup_netfront_single()
1777 queue->rx_irq = queue->tx_irq = err; in setup_netfront_single()
1782 xenbus_free_evtchn(queue->info->xbdev, queue->tx_evtchn); in setup_netfront_single()
1783 queue->tx_evtchn = 0; in setup_netfront_single()
1788 static int setup_netfront_split(struct netfront_queue *queue) in setup_netfront_split() argument
1792 err = xenbus_alloc_evtchn(queue->info->xbdev, &queue->tx_evtchn); in setup_netfront_split()
1795 err = xenbus_alloc_evtchn(queue->info->xbdev, &queue->rx_evtchn); in setup_netfront_split()
1799 snprintf(queue->tx_irq_name, sizeof(queue->tx_irq_name), in setup_netfront_split()
1800 "%s-tx", queue->name); in setup_netfront_split()
1801 err = bind_evtchn_to_irqhandler(queue->tx_evtchn, in setup_netfront_split()
1803 0, queue->tx_irq_name, queue); in setup_netfront_split()
1806 queue->tx_irq = err; in setup_netfront_split()
1808 snprintf(queue->rx_irq_name, sizeof(queue->rx_irq_name), in setup_netfront_split()
1809 "%s-rx", queue->name); in setup_netfront_split()
1810 err = bind_evtchn_to_irqhandler(queue->rx_evtchn, in setup_netfront_split()
1812 0, queue->rx_irq_name, queue); in setup_netfront_split()
1815 queue->rx_irq = err; in setup_netfront_split()
1820 unbind_from_irqhandler(queue->tx_irq, queue); in setup_netfront_split()
1821 queue->tx_irq = 0; in setup_netfront_split()
1823 xenbus_free_evtchn(queue->info->xbdev, queue->rx_evtchn); in setup_netfront_split()
1824 queue->rx_evtchn = 0; in setup_netfront_split()
1826 xenbus_free_evtchn(queue->info->xbdev, queue->tx_evtchn); in setup_netfront_split()
1827 queue->tx_evtchn = 0; in setup_netfront_split()
1833 struct netfront_queue *queue, unsigned int feature_split_evtchn) in setup_netfront() argument
1840 queue->tx_ring_ref = GRANT_INVALID_REF; in setup_netfront()
1841 queue->rx_ring_ref = GRANT_INVALID_REF; in setup_netfront()
1842 queue->rx.sring = NULL; in setup_netfront()
1843 queue->tx.sring = NULL; in setup_netfront()
1852 FRONT_RING_INIT(&queue->tx, txs, XEN_PAGE_SIZE); in setup_netfront()
1857 queue->tx_ring_ref = gref; in setup_netfront()
1866 FRONT_RING_INIT(&queue->rx, rxs, XEN_PAGE_SIZE); in setup_netfront()
1871 queue->rx_ring_ref = gref; in setup_netfront()
1874 err = setup_netfront_split(queue); in setup_netfront()
1880 err = setup_netfront_single(queue); in setup_netfront()
1891 gnttab_end_foreign_access_ref(queue->rx_ring_ref, 0); in setup_netfront()
1895 gnttab_end_foreign_access_ref(queue->tx_ring_ref, 0); in setup_netfront()
1902 /* Queue-specific initialisation
1904 * be run per-queue.
1906 static int xennet_init_queue(struct netfront_queue *queue) in xennet_init_queue() argument
1912 spin_lock_init(&queue->tx_lock); in xennet_init_queue()
1913 spin_lock_init(&queue->rx_lock); in xennet_init_queue()
1915 timer_setup(&queue->rx_refill_timer, rx_refill_timeout, 0); in xennet_init_queue()
1917 devid = strrchr(queue->info->xbdev->nodename, '/') + 1; in xennet_init_queue()
1918 snprintf(queue->name, sizeof(queue->name), "vif%s-q%u", in xennet_init_queue()
1919 devid, queue->id); in xennet_init_queue()
1922 queue->tx_skb_freelist = 0; in xennet_init_queue()
1923 queue->tx_pend_queue = TX_LINK_NONE; in xennet_init_queue()
1925 queue->tx_link[i] = i + 1; in xennet_init_queue()
1926 queue->grant_tx_ref[i] = GRANT_INVALID_REF; in xennet_init_queue()
1927 queue->grant_tx_page[i] = NULL; in xennet_init_queue()
1929 queue->tx_link[NET_TX_RING_SIZE - 1] = TX_LINK_NONE; in xennet_init_queue()
1933 queue->rx_skbs[i] = NULL; in xennet_init_queue()
1934 queue->grant_rx_ref[i] = GRANT_INVALID_REF; in xennet_init_queue()
1939 &queue->gref_tx_head) < 0) { in xennet_init_queue()
1947 &queue->gref_rx_head) < 0) { in xennet_init_queue()
1956 gnttab_free_grant_references(queue->gref_tx_head); in xennet_init_queue()
1961 static int write_queue_xenstore_keys(struct netfront_queue *queue, in write_queue_xenstore_keys() argument
1964 /* Write the queue-specific keys into XenStore in the traditional in write_queue_xenstore_keys()
1965 * way for a single queue, or in a queue subkeys for multiple in write_queue_xenstore_keys()
1968 struct xenbus_device *dev = queue->info->xbdev; in write_queue_xenstore_keys()
1983 snprintf(path, pathsize, "%s/queue-%u", in write_queue_xenstore_keys()
1984 dev->nodename, queue->id); in write_queue_xenstore_keys()
1991 queue->tx_ring_ref); in write_queue_xenstore_keys()
1998 queue->rx_ring_ref); in write_queue_xenstore_keys()
2007 if (queue->tx_evtchn == queue->rx_evtchn) { in write_queue_xenstore_keys()
2010 "event-channel", "%u", queue->tx_evtchn); in write_queue_xenstore_keys()
2018 "event-channel-tx", "%u", queue->tx_evtchn); in write_queue_xenstore_keys()
2025 "event-channel-rx", "%u", queue->rx_evtchn); in write_queue_xenstore_keys()
2048 struct netfront_queue *queue = &info->queues[i]; in xennet_destroy_queues() local
2051 napi_disable(&queue->napi); in xennet_destroy_queues()
2052 netif_napi_del(&queue->napi); in xennet_destroy_queues()
2061 static int xennet_create_page_pool(struct netfront_queue *queue) in xennet_create_page_pool() argument
2069 .dev = &queue->info->netdev->dev, in xennet_create_page_pool()
2074 queue->page_pool = page_pool_create(&pp_params); in xennet_create_page_pool()
2075 if (IS_ERR(queue->page_pool)) { in xennet_create_page_pool()
2076 err = PTR_ERR(queue->page_pool); in xennet_create_page_pool()
2077 queue->page_pool = NULL; in xennet_create_page_pool()
2081 err = xdp_rxq_info_reg(&queue->xdp_rxq, queue->info->netdev, in xennet_create_page_pool()
2082 queue->id, 0); in xennet_create_page_pool()
2084 netdev_err(queue->info->netdev, "xdp_rxq_info_reg failed\n"); in xennet_create_page_pool()
2088 err = xdp_rxq_info_reg_mem_model(&queue->xdp_rxq, in xennet_create_page_pool()
2089 MEM_TYPE_PAGE_POOL, queue->page_pool); in xennet_create_page_pool()
2091 netdev_err(queue->info->netdev, "xdp_rxq_info_reg_mem_model failed\n"); in xennet_create_page_pool()
2097 xdp_rxq_info_unreg(&queue->xdp_rxq); in xennet_create_page_pool()
2099 page_pool_destroy(queue->page_pool); in xennet_create_page_pool()
2100 queue->page_pool = NULL; in xennet_create_page_pool()
2116 struct netfront_queue *queue = &info->queues[i]; in xennet_create_queues() local
2118 queue->id = i; in xennet_create_queues()
2119 queue->info = info; in xennet_create_queues()
2121 ret = xennet_init_queue(queue); in xennet_create_queues()
2130 ret = xennet_create_page_pool(queue); in xennet_create_queues()
2137 netif_napi_add(queue->info->netdev, &queue->napi, in xennet_create_queues()
2140 napi_enable(&queue->napi); in xennet_create_queues()
2162 struct netfront_queue *queue = NULL; in talk_to_netback() local
2169 "multi-queue-max-queues", 1); in talk_to_netback()
2210 /* Create shared ring, alloc event channel -- for each queue */ in talk_to_netback()
2212 queue = &info->queues[i]; in talk_to_netback()
2213 err = setup_netfront(dev, queue, feature_split_evtchn); in talk_to_netback()
2226 info->xbdev->otherend, "multi-queue-max-queues")) { in talk_to_netback()
2229 "multi-queue-num-queues", "%u", num_queues); in talk_to_netback()
2231 message = "writing multi-queue-num-queues"; in talk_to_netback()
2241 /* Write the keys for each queue */ in talk_to_netback()
2243 queue = &info->queues[i]; in talk_to_netback()
2244 err = write_queue_xenstore_keys(queue, &xbt, 1); /* hierarchical */ in talk_to_netback()
2250 /* The remaining keys are not queue-specific */ in talk_to_netback()
2320 struct netfront_queue *queue = NULL; in xennet_connect() local
2362 queue = &np->queues[j]; in xennet_connect()
2364 notify_remote_via_irq(queue->tx_irq); in xennet_connect()
2365 if (queue->tx_irq != queue->rx_irq) in xennet_connect()
2366 notify_remote_via_irq(queue->rx_irq); in xennet_connect()
2368 spin_lock_irq(&queue->tx_lock); in xennet_connect()
2369 xennet_tx_buf_gc(queue); in xennet_connect()
2370 spin_unlock_irq(&queue->tx_lock); in xennet_connect()
2372 spin_lock_bh(&queue->rx_lock); in xennet_connect()
2373 xennet_alloc_rx_buffers(queue); in xennet_connect()
2374 spin_unlock_bh(&queue->rx_lock); in xennet_connect()