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 */
164 /* Multi-queue support */
213 static struct sk_buff *xennet_get_rx_skb(struct netfront_queue *queue, in xennet_get_rx_skb() argument
217 struct sk_buff *skb = queue->rx_skbs[i]; in xennet_get_rx_skb()
218 queue->rx_skbs[i] = NULL; in xennet_get_rx_skb()
222 static grant_ref_t xennet_get_rx_ref(struct netfront_queue *queue, in xennet_get_rx_ref() argument
226 grant_ref_t ref = queue->grant_rx_ref[i]; in xennet_get_rx_ref()
227 queue->grant_rx_ref[i] = GRANT_INVALID_REF; in xennet_get_rx_ref()
243 struct netfront_queue *queue = from_timer(queue, t, rx_refill_timer); in rx_refill_timeout() local
244 napi_schedule(&queue->napi); in rx_refill_timeout()
247 static int netfront_tx_slot_available(struct netfront_queue *queue) in netfront_tx_slot_available() argument
249 return (queue->tx.req_prod_pvt - queue->tx.rsp_cons) < in netfront_tx_slot_available()
253 static void xennet_maybe_wake_tx(struct netfront_queue *queue) in xennet_maybe_wake_tx() argument
255 struct net_device *dev = queue->info->netdev; in xennet_maybe_wake_tx()
256 struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, queue->id); in xennet_maybe_wake_tx()
259 netfront_tx_slot_available(queue) && in xennet_maybe_wake_tx()
261 netif_tx_wake_queue(netdev_get_tx_queue(dev, queue->id)); in xennet_maybe_wake_tx()
265 static struct sk_buff *xennet_alloc_one_rx_buffer(struct netfront_queue *queue) in xennet_alloc_one_rx_buffer() argument
270 skb = __netdev_alloc_skb(queue->info->netdev, in xennet_alloc_one_rx_buffer()
276 page = page_pool_dev_alloc_pages(queue->page_pool); in xennet_alloc_one_rx_buffer()
285 skb->dev = queue->info->netdev; in xennet_alloc_one_rx_buffer()
291 static void xennet_alloc_rx_buffers(struct netfront_queue *queue) in xennet_alloc_rx_buffers() argument
293 RING_IDX req_prod = queue->rx.req_prod_pvt; in xennet_alloc_rx_buffers()
297 if (unlikely(!netif_carrier_ok(queue->info->netdev))) in xennet_alloc_rx_buffers()
300 for (req_prod = queue->rx.req_prod_pvt; in xennet_alloc_rx_buffers()
301 req_prod - queue->rx.rsp_cons < NET_RX_RING_SIZE; in xennet_alloc_rx_buffers()
309 skb = xennet_alloc_one_rx_buffer(queue); in xennet_alloc_rx_buffers()
317 BUG_ON(queue->rx_skbs[id]); in xennet_alloc_rx_buffers()
318 queue->rx_skbs[id] = skb; in xennet_alloc_rx_buffers()
320 ref = gnttab_claim_grant_reference(&queue->gref_rx_head); in xennet_alloc_rx_buffers()
322 queue->grant_rx_ref[id] = ref; in xennet_alloc_rx_buffers()
326 req = RING_GET_REQUEST(&queue->rx, req_prod); in xennet_alloc_rx_buffers()
328 queue->info->xbdev->otherend_id, in xennet_alloc_rx_buffers()
335 queue->rx.req_prod_pvt = req_prod; in xennet_alloc_rx_buffers()
342 if (req_prod - queue->rx.rsp_cons < NET_RX_SLOTS_MIN || in xennet_alloc_rx_buffers()
344 mod_timer(&queue->rx_refill_timer, jiffies + (HZ/10)); in xennet_alloc_rx_buffers()
348 RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->rx, notify); in xennet_alloc_rx_buffers()
350 notify_remote_via_irq(queue->rx_irq); in xennet_alloc_rx_buffers()
358 struct netfront_queue *queue = NULL; in xennet_open() local
364 queue = &np->queues[i]; in xennet_open()
365 napi_enable(&queue->napi); in xennet_open()
367 spin_lock_bh(&queue->rx_lock); in xennet_open()
369 xennet_alloc_rx_buffers(queue); in xennet_open()
370 queue->rx.sring->rsp_event = queue->rx.rsp_cons + 1; in xennet_open()
371 if (RING_HAS_UNCONSUMED_RESPONSES(&queue->rx)) in xennet_open()
372 napi_schedule(&queue->napi); in xennet_open()
374 spin_unlock_bh(&queue->rx_lock); in xennet_open()
382 static bool xennet_tx_buf_gc(struct netfront_queue *queue) in xennet_tx_buf_gc() argument
389 const struct device *dev = &queue->info->netdev->dev; in xennet_tx_buf_gc()
391 BUG_ON(!netif_carrier_ok(queue->info->netdev)); in xennet_tx_buf_gc()
394 prod = queue->tx.sring->rsp_prod; in xennet_tx_buf_gc()
395 if (RING_RESPONSE_PROD_OVERFLOW(&queue->tx, prod)) { in xennet_tx_buf_gc()
397 prod - queue->tx.rsp_cons); in xennet_tx_buf_gc()
402 for (cons = queue->tx.rsp_cons; cons != prod; cons++) { in xennet_tx_buf_gc()
407 RING_COPY_RESPONSE(&queue->tx, cons, &txrsp); in xennet_tx_buf_gc()
412 if (id >= RING_SIZE(&queue->tx)) { in xennet_tx_buf_gc()
418 if (queue->tx_link[id] != TX_PENDING) { in xennet_tx_buf_gc()
424 queue->tx_link[id] = TX_LINK_NONE; in xennet_tx_buf_gc()
425 skb = queue->tx_skbs[id]; in xennet_tx_buf_gc()
426 queue->tx_skbs[id] = NULL; in xennet_tx_buf_gc()
428 queue->grant_tx_ref[id]) != 0)) { in xennet_tx_buf_gc()
434 queue->grant_tx_ref[id], GNTMAP_readonly); in xennet_tx_buf_gc()
436 &queue->gref_tx_head, queue->grant_tx_ref[id]); in xennet_tx_buf_gc()
437 queue->grant_tx_ref[id] = GRANT_INVALID_REF; in xennet_tx_buf_gc()
438 queue->grant_tx_page[id] = NULL; in xennet_tx_buf_gc()
439 add_id_to_list(&queue->tx_skb_freelist, queue->tx_link, id); in xennet_tx_buf_gc()
443 queue->tx.rsp_cons = prod; in xennet_tx_buf_gc()
445 RING_FINAL_CHECK_FOR_RESPONSES(&queue->tx, more_to_do); in xennet_tx_buf_gc()
448 xennet_maybe_wake_tx(queue); in xennet_tx_buf_gc()
453 queue->info->broken = true; in xennet_tx_buf_gc()
460 struct netfront_queue *queue; member
477 struct netfront_queue *queue = info->queue; in xennet_tx_setup_grant() local
480 id = get_id_from_list(&queue->tx_skb_freelist, queue->tx_link); in xennet_tx_setup_grant()
481 tx = RING_GET_REQUEST(&queue->tx, queue->tx.req_prod_pvt++); in xennet_tx_setup_grant()
482 ref = gnttab_claim_grant_reference(&queue->gref_tx_head); in xennet_tx_setup_grant()
485 gnttab_grant_foreign_access_ref(ref, queue->info->xbdev->otherend_id, in xennet_tx_setup_grant()
488 queue->tx_skbs[id] = skb; in xennet_tx_setup_grant()
489 queue->grant_tx_page[id] = page; in xennet_tx_setup_grant()
490 queue->grant_tx_ref[id] = ref; in xennet_tx_setup_grant()
501 * Put the request in the pending queue, it will be set to be pending in xennet_tx_setup_grant()
504 add_id_to_list(&queue->tx_pend_queue, queue->tx_link, id); in xennet_tx_setup_grant()
587 /* First, check if there is only one queue */ in xennet_select_queue()
598 static void xennet_mark_tx_pending(struct netfront_queue *queue) in xennet_mark_tx_pending() argument
602 while ((i = get_id_from_list(&queue->tx_pend_queue, queue->tx_link)) != in xennet_mark_tx_pending()
604 queue->tx_link[i] = TX_PENDING; in xennet_mark_tx_pending()
608 struct netfront_queue *queue, in xennet_xdp_xmit_one() argument
614 .queue = queue, in xennet_xdp_xmit_one()
624 xennet_mark_tx_pending(queue); in xennet_xdp_xmit_one()
626 RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->tx, notify); in xennet_xdp_xmit_one()
628 notify_remote_via_irq(queue->tx_irq); in xennet_xdp_xmit_one()
635 xennet_tx_buf_gc(queue); in xennet_xdp_xmit_one()
645 struct netfront_queue *queue = NULL; in xennet_xdp_xmit() local
655 queue = &np->queues[smp_processor_id() % num_queues]; in xennet_xdp_xmit()
657 spin_lock_irqsave(&queue->tx_lock, irq_flags); in xennet_xdp_xmit()
663 err = xennet_xdp_xmit_one(dev, queue, xdpf); in xennet_xdp_xmit()
669 spin_unlock_irqrestore(&queue->tx_lock, irq_flags); in xennet_xdp_xmit()
689 struct netfront_queue *queue = NULL; in xennet_start_xmit() local
700 /* Determine which queue to transmit this SKB on */ in xennet_start_xmit()
702 queue = &np->queues[queue_index]; in xennet_start_xmit()
740 spin_lock_irqsave(&queue->tx_lock, flags); in xennet_start_xmit()
745 spin_unlock_irqrestore(&queue->tx_lock, flags); in xennet_start_xmit()
750 info.queue = queue; in xennet_start_xmit()
774 RING_GET_REQUEST(&queue->tx, queue->tx.req_prod_pvt++); in xennet_start_xmit()
806 xennet_mark_tx_pending(queue); in xennet_start_xmit()
808 RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->tx, notify); in xennet_start_xmit()
810 notify_remote_via_irq(queue->tx_irq); in xennet_start_xmit()
818 xennet_tx_buf_gc(queue); in xennet_start_xmit()
820 if (!netfront_tx_slot_available(queue)) in xennet_start_xmit()
821 netif_tx_stop_queue(netdev_get_tx_queue(dev, queue->id)); in xennet_start_xmit()
823 spin_unlock_irqrestore(&queue->tx_lock, flags); in xennet_start_xmit()
838 struct netfront_queue *queue; in xennet_close() local
841 queue = &np->queues[i]; in xennet_close()
842 napi_disable(&queue->napi); in xennet_close()
847 static void xennet_set_rx_rsp_cons(struct netfront_queue *queue, RING_IDX val) in xennet_set_rx_rsp_cons() argument
851 spin_lock_irqsave(&queue->rx_cons_lock, flags); in xennet_set_rx_rsp_cons()
852 queue->rx.rsp_cons = val; in xennet_set_rx_rsp_cons()
853 queue->rx_rsp_unconsumed = RING_HAS_UNCONSUMED_RESPONSES(&queue->rx); in xennet_set_rx_rsp_cons()
854 spin_unlock_irqrestore(&queue->rx_cons_lock, flags); in xennet_set_rx_rsp_cons()
857 static void xennet_move_rx_slot(struct netfront_queue *queue, struct sk_buff *skb, in xennet_move_rx_slot() argument
860 int new = xennet_rxidx(queue->rx.req_prod_pvt); in xennet_move_rx_slot()
862 BUG_ON(queue->rx_skbs[new]); in xennet_move_rx_slot()
863 queue->rx_skbs[new] = skb; in xennet_move_rx_slot()
864 queue->grant_rx_ref[new] = ref; in xennet_move_rx_slot()
865 RING_GET_REQUEST(&queue->rx, queue->rx.req_prod_pvt)->id = new; in xennet_move_rx_slot()
866 RING_GET_REQUEST(&queue->rx, queue->rx.req_prod_pvt)->gref = ref; in xennet_move_rx_slot()
867 queue->rx.req_prod_pvt++; in xennet_move_rx_slot()
870 static int xennet_get_extras(struct netfront_queue *queue, in xennet_get_extras() argument
876 struct device *dev = &queue->info->netdev->dev; in xennet_get_extras()
877 RING_IDX cons = queue->rx.rsp_cons; in xennet_get_extras()
891 RING_COPY_RESPONSE(&queue->rx, ++cons, &extra); in xennet_get_extras()
903 skb = xennet_get_rx_skb(queue, cons); in xennet_get_extras()
904 ref = xennet_get_rx_ref(queue, cons); in xennet_get_extras()
905 xennet_move_rx_slot(queue, skb, ref); in xennet_get_extras()
908 xennet_set_rx_rsp_cons(queue, cons); in xennet_get_extras()
912 static u32 xennet_run_xdp(struct netfront_queue *queue, struct page *pdata, in xennet_run_xdp() argument
925 xdp->rxq = &queue->xdp_rxq; in xennet_run_xdp()
933 err = xennet_xdp_xmit(queue->info->netdev, 1, &xdpf, 0); in xennet_run_xdp()
935 trace_xdp_exception(queue->info->netdev, prog, act); in xennet_run_xdp()
939 err = xdp_do_redirect(queue->info->netdev, xdp, prog); in xennet_run_xdp()
942 trace_xdp_exception(queue->info->netdev, prog, act); in xennet_run_xdp()
949 trace_xdp_exception(queue->info->netdev, prog, act); in xennet_run_xdp()
959 static int xennet_get_responses(struct netfront_queue *queue, in xennet_get_responses() argument
966 RING_IDX cons = queue->rx.rsp_cons; in xennet_get_responses()
967 struct sk_buff *skb = xennet_get_rx_skb(queue, cons); in xennet_get_responses()
969 grant_ref_t ref = xennet_get_rx_ref(queue, cons); in xennet_get_responses()
970 struct device *dev = &queue->info->netdev->dev; in xennet_get_responses()
979 err = xennet_get_extras(queue, extras, rp); in xennet_get_responses()
988 cons = queue->rx.rsp_cons; in xennet_get_responses()
997 xennet_move_rx_slot(queue, skb, ref); in xennet_get_responses()
1018 gnttab_release_grant_reference(&queue->gref_rx_head, ref); in xennet_get_responses()
1021 xdp_prog = rcu_dereference(queue->xdp_prog); in xennet_get_responses()
1025 verdict = xennet_run_xdp(queue, in xennet_get_responses()
1048 RING_COPY_RESPONSE(&queue->rx, cons + slots, &rx_local); in xennet_get_responses()
1050 skb = xennet_get_rx_skb(queue, cons + slots); in xennet_get_responses()
1051 ref = xennet_get_rx_ref(queue, cons + slots); in xennet_get_responses()
1062 xennet_set_rx_rsp_cons(queue, cons + slots); in xennet_get_responses()
1096 static int xennet_fill_frags(struct netfront_queue *queue, in xennet_fill_frags() argument
1100 RING_IDX cons = queue->rx.rsp_cons; in xennet_fill_frags()
1107 RING_COPY_RESPONSE(&queue->rx, ++cons, &rx); in xennet_fill_frags()
1116 xennet_set_rx_rsp_cons(queue, in xennet_fill_frags()
1130 xennet_set_rx_rsp_cons(queue, cons); in xennet_fill_frags()
1159 static int handle_incoming_queue(struct netfront_queue *queue, in handle_incoming_queue() argument
1162 struct netfront_stats *rx_stats = this_cpu_ptr(queue->info->rx_stats); in handle_incoming_queue()
1173 skb->protocol = eth_type_trans(skb, queue->info->netdev); in handle_incoming_queue()
1176 if (checksum_setup(queue->info->netdev, skb)) { in handle_incoming_queue()
1179 queue->info->netdev->stats.rx_errors++; in handle_incoming_queue()
1189 napi_gro_receive(&queue->napi, skb); in handle_incoming_queue()
1197 struct netfront_queue *queue = container_of(napi, struct netfront_queue, napi); in xennet_poll() local
1198 struct net_device *dev = queue->info->netdev; in xennet_poll()
1211 spin_lock(&queue->rx_lock); in xennet_poll()
1217 rp = queue->rx.sring->rsp_prod; in xennet_poll()
1218 if (RING_RESPONSE_PROD_OVERFLOW(&queue->rx, rp)) { in xennet_poll()
1220 rp - queue->rx.rsp_cons); in xennet_poll()
1221 queue->info->broken = true; in xennet_poll()
1222 spin_unlock(&queue->rx_lock); in xennet_poll()
1227 i = queue->rx.rsp_cons; in xennet_poll()
1230 RING_COPY_RESPONSE(&queue->rx, i, rx); in xennet_poll()
1233 err = xennet_get_responses(queue, &rinfo, rp, &tmpq, in xennet_poll()
1241 i = queue->rx.rsp_cons; in xennet_poll()
1253 xennet_set_rx_rsp_cons(queue, in xennet_poll()
1254 queue->rx.rsp_cons + in xennet_poll()
1269 if (unlikely(xennet_fill_frags(queue, skb, &tmpq))) in xennet_poll()
1279 i = queue->rx.rsp_cons + 1; in xennet_poll()
1280 xennet_set_rx_rsp_cons(queue, i); in xennet_poll()
1288 work_done -= handle_incoming_queue(queue, &rxq); in xennet_poll()
1290 xennet_alloc_rx_buffers(queue); in xennet_poll()
1297 RING_FINAL_CHECK_FOR_RESPONSES(&queue->rx, more_to_do); in xennet_poll()
1302 spin_unlock(&queue->rx_lock); in xennet_poll()
1351 static void xennet_release_tx_bufs(struct netfront_queue *queue) in xennet_release_tx_bufs() argument
1358 if (!queue->tx_skbs[i]) in xennet_release_tx_bufs()
1361 skb = queue->tx_skbs[i]; in xennet_release_tx_bufs()
1362 queue->tx_skbs[i] = NULL; in xennet_release_tx_bufs()
1363 get_page(queue->grant_tx_page[i]); in xennet_release_tx_bufs()
1364 gnttab_end_foreign_access(queue->grant_tx_ref[i], in xennet_release_tx_bufs()
1366 (unsigned long)page_address(queue->grant_tx_page[i])); in xennet_release_tx_bufs()
1367 queue->grant_tx_page[i] = NULL; in xennet_release_tx_bufs()
1368 queue->grant_tx_ref[i] = GRANT_INVALID_REF; in xennet_release_tx_bufs()
1369 add_id_to_list(&queue->tx_skb_freelist, queue->tx_link, i); in xennet_release_tx_bufs()
1374 static void xennet_release_rx_bufs(struct netfront_queue *queue) in xennet_release_rx_bufs() argument
1378 spin_lock_bh(&queue->rx_lock); in xennet_release_rx_bufs()
1384 skb = queue->rx_skbs[id]; in xennet_release_rx_bufs()
1388 ref = queue->grant_rx_ref[id]; in xennet_release_rx_bufs()
1400 queue->grant_rx_ref[id] = GRANT_INVALID_REF; in xennet_release_rx_bufs()
1405 spin_unlock_bh(&queue->rx_lock); in xennet_release_rx_bufs()
1444 static bool xennet_handle_tx(struct netfront_queue *queue, unsigned int *eoi) in xennet_handle_tx() argument
1448 if (unlikely(queue->info->broken)) in xennet_handle_tx()
1451 spin_lock_irqsave(&queue->tx_lock, flags); in xennet_handle_tx()
1452 if (xennet_tx_buf_gc(queue)) in xennet_handle_tx()
1454 spin_unlock_irqrestore(&queue->tx_lock, flags); in xennet_handle_tx()
1469 static bool xennet_handle_rx(struct netfront_queue *queue, unsigned int *eoi) in xennet_handle_rx() argument
1474 if (unlikely(queue->info->broken)) in xennet_handle_rx()
1477 spin_lock_irqsave(&queue->rx_cons_lock, flags); in xennet_handle_rx()
1478 work_queued = RING_HAS_UNCONSUMED_RESPONSES(&queue->rx); in xennet_handle_rx()
1479 if (work_queued > queue->rx_rsp_unconsumed) { in xennet_handle_rx()
1480 queue->rx_rsp_unconsumed = work_queued; in xennet_handle_rx()
1482 } else if (unlikely(work_queued < queue->rx_rsp_unconsumed)) { in xennet_handle_rx()
1483 const struct device *dev = &queue->info->netdev->dev; in xennet_handle_rx()
1485 spin_unlock_irqrestore(&queue->rx_cons_lock, flags); in xennet_handle_rx()
1488 queue->info->broken = true; in xennet_handle_rx()
1491 spin_unlock_irqrestore(&queue->rx_cons_lock, flags); in xennet_handle_rx()
1493 if (likely(netif_carrier_ok(queue->info->netdev) && work_queued)) in xennet_handle_rx()
1494 napi_schedule(&queue->napi); in xennet_handle_rx()
1523 /* Poll each queue */ in xennet_poll_controller()
1750 struct netfront_queue *queue = &info->queues[i]; in xennet_disconnect_backend() local
1752 del_timer_sync(&queue->rx_refill_timer); in xennet_disconnect_backend()
1754 if (queue->tx_irq && (queue->tx_irq == queue->rx_irq)) in xennet_disconnect_backend()
1755 unbind_from_irqhandler(queue->tx_irq, queue); in xennet_disconnect_backend()
1756 if (queue->tx_irq && (queue->tx_irq != queue->rx_irq)) { in xennet_disconnect_backend()
1757 unbind_from_irqhandler(queue->tx_irq, queue); in xennet_disconnect_backend()
1758 unbind_from_irqhandler(queue->rx_irq, queue); in xennet_disconnect_backend()
1760 queue->tx_evtchn = queue->rx_evtchn = 0; in xennet_disconnect_backend()
1761 queue->tx_irq = queue->rx_irq = 0; in xennet_disconnect_backend()
1764 napi_synchronize(&queue->napi); in xennet_disconnect_backend()
1766 xennet_release_tx_bufs(queue); in xennet_disconnect_backend()
1767 xennet_release_rx_bufs(queue); in xennet_disconnect_backend()
1768 gnttab_free_grant_references(queue->gref_tx_head); in xennet_disconnect_backend()
1769 gnttab_free_grant_references(queue->gref_rx_head); in xennet_disconnect_backend()
1772 xennet_end_access(queue->tx_ring_ref, queue->tx.sring); in xennet_disconnect_backend()
1773 xennet_end_access(queue->rx_ring_ref, queue->rx.sring); in xennet_disconnect_backend()
1775 queue->tx_ring_ref = GRANT_INVALID_REF; in xennet_disconnect_backend()
1776 queue->rx_ring_ref = GRANT_INVALID_REF; in xennet_disconnect_backend()
1777 queue->tx.sring = NULL; in xennet_disconnect_backend()
1778 queue->rx.sring = NULL; in xennet_disconnect_backend()
1780 page_pool_destroy(queue->page_pool); in xennet_disconnect_backend()
1826 static int setup_netfront_single(struct netfront_queue *queue) in setup_netfront_single() argument
1830 err = xenbus_alloc_evtchn(queue->info->xbdev, &queue->tx_evtchn); in setup_netfront_single()
1834 err = bind_evtchn_to_irqhandler_lateeoi(queue->tx_evtchn, in setup_netfront_single()
1836 queue->info->netdev->name, in setup_netfront_single()
1837 queue); in setup_netfront_single()
1840 queue->rx_evtchn = queue->tx_evtchn; in setup_netfront_single()
1841 queue->rx_irq = queue->tx_irq = err; in setup_netfront_single()
1846 xenbus_free_evtchn(queue->info->xbdev, queue->tx_evtchn); in setup_netfront_single()
1847 queue->tx_evtchn = 0; in setup_netfront_single()
1852 static int setup_netfront_split(struct netfront_queue *queue) in setup_netfront_split() argument
1856 err = xenbus_alloc_evtchn(queue->info->xbdev, &queue->tx_evtchn); in setup_netfront_split()
1859 err = xenbus_alloc_evtchn(queue->info->xbdev, &queue->rx_evtchn); in setup_netfront_split()
1863 snprintf(queue->tx_irq_name, sizeof(queue->tx_irq_name), in setup_netfront_split()
1864 "%s-tx", queue->name); in setup_netfront_split()
1865 err = bind_evtchn_to_irqhandler_lateeoi(queue->tx_evtchn, in setup_netfront_split()
1867 queue->tx_irq_name, queue); in setup_netfront_split()
1870 queue->tx_irq = err; in setup_netfront_split()
1872 snprintf(queue->rx_irq_name, sizeof(queue->rx_irq_name), in setup_netfront_split()
1873 "%s-rx", queue->name); in setup_netfront_split()
1874 err = bind_evtchn_to_irqhandler_lateeoi(queue->rx_evtchn, in setup_netfront_split()
1876 queue->rx_irq_name, queue); in setup_netfront_split()
1879 queue->rx_irq = err; in setup_netfront_split()
1884 unbind_from_irqhandler(queue->tx_irq, queue); in setup_netfront_split()
1885 queue->tx_irq = 0; in setup_netfront_split()
1887 xenbus_free_evtchn(queue->info->xbdev, queue->rx_evtchn); in setup_netfront_split()
1888 queue->rx_evtchn = 0; in setup_netfront_split()
1890 xenbus_free_evtchn(queue->info->xbdev, queue->tx_evtchn); in setup_netfront_split()
1891 queue->tx_evtchn = 0; in setup_netfront_split()
1897 struct netfront_queue *queue, unsigned int feature_split_evtchn) in setup_netfront() argument
1904 queue->tx_ring_ref = GRANT_INVALID_REF; in setup_netfront()
1905 queue->rx_ring_ref = GRANT_INVALID_REF; in setup_netfront()
1906 queue->rx.sring = NULL; in setup_netfront()
1907 queue->tx.sring = NULL; in setup_netfront()
1916 FRONT_RING_INIT(&queue->tx, txs, XEN_PAGE_SIZE); in setup_netfront()
1921 queue->tx_ring_ref = gref; in setup_netfront()
1930 FRONT_RING_INIT(&queue->rx, rxs, XEN_PAGE_SIZE); in setup_netfront()
1935 queue->rx_ring_ref = gref; in setup_netfront()
1938 err = setup_netfront_split(queue); in setup_netfront()
1944 err = setup_netfront_single(queue); in setup_netfront()
1955 gnttab_end_foreign_access_ref(queue->rx_ring_ref, 0); in setup_netfront()
1959 gnttab_end_foreign_access_ref(queue->tx_ring_ref, 0); in setup_netfront()
1966 /* Queue-specific initialisation
1968 * be run per-queue.
1970 static int xennet_init_queue(struct netfront_queue *queue) in xennet_init_queue() argument
1976 spin_lock_init(&queue->tx_lock); in xennet_init_queue()
1977 spin_lock_init(&queue->rx_lock); in xennet_init_queue()
1978 spin_lock_init(&queue->rx_cons_lock); in xennet_init_queue()
1980 timer_setup(&queue->rx_refill_timer, rx_refill_timeout, 0); in xennet_init_queue()
1982 devid = strrchr(queue->info->xbdev->nodename, '/') + 1; in xennet_init_queue()
1983 snprintf(queue->name, sizeof(queue->name), "vif%s-q%u", in xennet_init_queue()
1984 devid, queue->id); in xennet_init_queue()
1987 queue->tx_skb_freelist = 0; in xennet_init_queue()
1988 queue->tx_pend_queue = TX_LINK_NONE; in xennet_init_queue()
1990 queue->tx_link[i] = i + 1; in xennet_init_queue()
1991 queue->grant_tx_ref[i] = GRANT_INVALID_REF; in xennet_init_queue()
1992 queue->grant_tx_page[i] = NULL; in xennet_init_queue()
1994 queue->tx_link[NET_TX_RING_SIZE - 1] = TX_LINK_NONE; in xennet_init_queue()
1998 queue->rx_skbs[i] = NULL; in xennet_init_queue()
1999 queue->grant_rx_ref[i] = GRANT_INVALID_REF; in xennet_init_queue()
2004 &queue->gref_tx_head) < 0) { in xennet_init_queue()
2012 &queue->gref_rx_head) < 0) { in xennet_init_queue()
2021 gnttab_free_grant_references(queue->gref_tx_head); in xennet_init_queue()
2026 static int write_queue_xenstore_keys(struct netfront_queue *queue, in write_queue_xenstore_keys() argument
2029 /* Write the queue-specific keys into XenStore in the traditional in write_queue_xenstore_keys()
2030 * way for a single queue, or in a queue subkeys for multiple in write_queue_xenstore_keys()
2033 struct xenbus_device *dev = queue->info->xbdev; in write_queue_xenstore_keys()
2048 snprintf(path, pathsize, "%s/queue-%u", in write_queue_xenstore_keys()
2049 dev->nodename, queue->id); in write_queue_xenstore_keys()
2056 queue->tx_ring_ref); in write_queue_xenstore_keys()
2063 queue->rx_ring_ref); in write_queue_xenstore_keys()
2072 if (queue->tx_evtchn == queue->rx_evtchn) { in write_queue_xenstore_keys()
2075 "event-channel", "%u", queue->tx_evtchn); in write_queue_xenstore_keys()
2083 "event-channel-tx", "%u", queue->tx_evtchn); in write_queue_xenstore_keys()
2090 "event-channel-rx", "%u", queue->rx_evtchn); in write_queue_xenstore_keys()
2113 struct netfront_queue *queue = &info->queues[i]; in xennet_destroy_queues() local
2116 napi_disable(&queue->napi); in xennet_destroy_queues()
2117 netif_napi_del(&queue->napi); in xennet_destroy_queues()
2126 static int xennet_create_page_pool(struct netfront_queue *queue) in xennet_create_page_pool() argument
2134 .dev = &queue->info->netdev->dev, in xennet_create_page_pool()
2139 queue->page_pool = page_pool_create(&pp_params); in xennet_create_page_pool()
2140 if (IS_ERR(queue->page_pool)) { in xennet_create_page_pool()
2141 err = PTR_ERR(queue->page_pool); in xennet_create_page_pool()
2142 queue->page_pool = NULL; in xennet_create_page_pool()
2146 err = xdp_rxq_info_reg(&queue->xdp_rxq, queue->info->netdev, in xennet_create_page_pool()
2147 queue->id); in xennet_create_page_pool()
2149 netdev_err(queue->info->netdev, "xdp_rxq_info_reg failed\n"); in xennet_create_page_pool()
2153 err = xdp_rxq_info_reg_mem_model(&queue->xdp_rxq, in xennet_create_page_pool()
2154 MEM_TYPE_PAGE_POOL, queue->page_pool); in xennet_create_page_pool()
2156 netdev_err(queue->info->netdev, "xdp_rxq_info_reg_mem_model failed\n"); in xennet_create_page_pool()
2162 xdp_rxq_info_unreg(&queue->xdp_rxq); in xennet_create_page_pool()
2164 page_pool_destroy(queue->page_pool); in xennet_create_page_pool()
2165 queue->page_pool = NULL; in xennet_create_page_pool()
2181 struct netfront_queue *queue = &info->queues[i]; in xennet_create_queues() local
2183 queue->id = i; in xennet_create_queues()
2184 queue->info = info; in xennet_create_queues()
2186 ret = xennet_init_queue(queue); in xennet_create_queues()
2195 ret = xennet_create_page_pool(queue); in xennet_create_queues()
2202 netif_napi_add(queue->info->netdev, &queue->napi, in xennet_create_queues()
2205 napi_enable(&queue->napi); in xennet_create_queues()
2227 struct netfront_queue *queue = NULL; in talk_to_netback() local
2234 "multi-queue-max-queues", 1); in talk_to_netback()
2275 /* Create shared ring, alloc event channel -- for each queue */ in talk_to_netback()
2277 queue = &info->queues[i]; in talk_to_netback()
2278 err = setup_netfront(dev, queue, feature_split_evtchn); in talk_to_netback()
2291 info->xbdev->otherend, "multi-queue-max-queues")) { in talk_to_netback()
2294 "multi-queue-num-queues", "%u", num_queues); in talk_to_netback()
2296 message = "writing multi-queue-num-queues"; in talk_to_netback()
2306 /* Write the keys for each queue */ in talk_to_netback()
2308 queue = &info->queues[i]; in talk_to_netback()
2309 err = write_queue_xenstore_keys(queue, &xbt, 1); /* hierarchical */ in talk_to_netback()
2315 /* The remaining keys are not queue-specific */ in talk_to_netback()
2385 struct netfront_queue *queue = NULL; in xennet_connect() local
2427 queue = &np->queues[j]; in xennet_connect()
2429 notify_remote_via_irq(queue->tx_irq); in xennet_connect()
2430 if (queue->tx_irq != queue->rx_irq) in xennet_connect()
2431 notify_remote_via_irq(queue->rx_irq); in xennet_connect()
2433 spin_lock_irq(&queue->tx_lock); in xennet_connect()
2434 xennet_tx_buf_gc(queue); in xennet_connect()
2435 spin_unlock_irq(&queue->tx_lock); in xennet_connect()
2437 spin_lock_bh(&queue->rx_lock); in xennet_connect()
2438 xennet_alloc_rx_buffers(queue); in xennet_connect()
2439 spin_unlock_bh(&queue->rx_lock); in xennet_connect()