Lines Matching full:queue
58 /* The time that packets can stay on the guest Rx internal queue
106 static void xenvif_idx_release(struct xenvif_queue *queue, u16 pending_idx,
109 static void make_tx_response(struct xenvif_queue *queue,
113 static void push_tx_responses(struct xenvif_queue *queue);
115 static inline int tx_work_todo(struct xenvif_queue *queue);
117 static inline unsigned long idx_to_pfn(struct xenvif_queue *queue, in idx_to_pfn() argument
120 return page_to_pfn(queue->mmap_pages[idx]); in idx_to_pfn()
123 static inline unsigned long idx_to_kaddr(struct xenvif_queue *queue, in idx_to_kaddr() argument
126 return (unsigned long)pfn_to_kaddr(idx_to_pfn(queue, idx)); in idx_to_kaddr()
159 void xenvif_kick_thread(struct xenvif_queue *queue) in xenvif_kick_thread() argument
161 wake_up(&queue->wq); in xenvif_kick_thread()
164 void xenvif_napi_schedule_or_enable_events(struct xenvif_queue *queue) in xenvif_napi_schedule_or_enable_events() argument
168 RING_FINAL_CHECK_FOR_REQUESTS(&queue->tx, more_to_do); in xenvif_napi_schedule_or_enable_events()
171 napi_schedule(&queue->napi); in xenvif_napi_schedule_or_enable_events()
173 &queue->eoi_pending) & in xenvif_napi_schedule_or_enable_events()
175 xen_irq_lateeoi(queue->tx_irq, 0); in xenvif_napi_schedule_or_enable_events()
178 static void tx_add_credit(struct xenvif_queue *queue) in tx_add_credit() argument
186 max_burst = max(131072UL, queue->credit_bytes); in tx_add_credit()
189 max_credit = queue->remaining_credit + queue->credit_bytes; in tx_add_credit()
190 if (max_credit < queue->remaining_credit) in tx_add_credit()
193 queue->remaining_credit = min(max_credit, max_burst); in tx_add_credit()
194 queue->rate_limited = false; in tx_add_credit()
199 struct xenvif_queue *queue = from_timer(queue, t, credit_timeout); in xenvif_tx_credit_callback() local
200 tx_add_credit(queue); in xenvif_tx_credit_callback()
201 xenvif_napi_schedule_or_enable_events(queue); in xenvif_tx_credit_callback()
204 static void xenvif_tx_err(struct xenvif_queue *queue, in xenvif_tx_err() argument
208 RING_IDX cons = queue->tx.req_cons; in xenvif_tx_err()
212 spin_lock_irqsave(&queue->response_lock, flags); in xenvif_tx_err()
213 make_tx_response(queue, txp, extra_count, XEN_NETIF_RSP_ERROR); in xenvif_tx_err()
214 push_tx_responses(queue); in xenvif_tx_err()
215 spin_unlock_irqrestore(&queue->response_lock, flags); in xenvif_tx_err()
218 RING_COPY_REQUEST(&queue->tx, cons++, txp); in xenvif_tx_err()
221 queue->tx.req_cons = cons; in xenvif_tx_err()
228 /* Disable the vif from queue 0's kthread */ in xenvif_fatal_tx_err()
233 static int xenvif_count_requests(struct xenvif_queue *queue, in xenvif_count_requests() argument
239 RING_IDX cons = queue->tx.req_cons; in xenvif_count_requests()
251 netdev_err(queue->vif->dev, in xenvif_count_requests()
254 xenvif_fatal_tx_err(queue->vif); in xenvif_count_requests()
262 netdev_err(queue->vif->dev, in xenvif_count_requests()
265 xenvif_fatal_tx_err(queue->vif); in xenvif_count_requests()
278 netdev_dbg(queue->vif->dev, in xenvif_count_requests()
287 RING_COPY_REQUEST(&queue->tx, cons + slots, txp); in xenvif_count_requests()
300 netdev_dbg(queue->vif->dev, in xenvif_count_requests()
310 netdev_err(queue->vif->dev, "Cross page boundary, txp->offset: %u, size: %u\n", in xenvif_count_requests()
312 xenvif_fatal_tx_err(queue->vif); in xenvif_count_requests()
324 xenvif_tx_err(queue, first, extra_count, cons + slots); in xenvif_count_requests()
341 static inline void xenvif_tx_create_map_op(struct xenvif_queue *queue, in xenvif_tx_create_map_op() argument
347 queue->pages_to_map[mop-queue->tx_map_ops] = queue->mmap_pages[pending_idx]; in xenvif_tx_create_map_op()
348 gnttab_set_map_op(mop, idx_to_kaddr(queue, pending_idx), in xenvif_tx_create_map_op()
350 txp->gref, queue->vif->domid); in xenvif_tx_create_map_op()
352 memcpy(&queue->pending_tx_info[pending_idx].req, txp, in xenvif_tx_create_map_op()
354 queue->pending_tx_info[pending_idx].extra_count = extra_count; in xenvif_tx_create_map_op()
374 static void xenvif_get_requests(struct xenvif_queue *queue, in xenvif_get_requests() argument
390 struct gnttab_copy *cop = queue->tx_copy_ops + *copy_ops; in xenvif_get_requests()
391 struct gnttab_map_grant_ref *gop = queue->tx_map_ops + *map_ops; in xenvif_get_requests()
404 cop->source.domid = queue->vif->domid; in xenvif_get_requests()
417 index = pending_index(queue->pending_cons); in xenvif_get_requests()
418 pending_idx = queue->pending_ring[index]; in xenvif_get_requests()
419 callback_param(queue, pending_idx).ctx = NULL; in xenvif_get_requests()
429 memcpy(&queue->pending_tx_info[pending_idx].req, in xenvif_get_requests()
431 queue->pending_tx_info[pending_idx].extra_count = in xenvif_get_requests()
438 queue->pending_cons++; in xenvif_get_requests()
451 index = pending_index(queue->pending_cons++); in xenvif_get_requests()
452 pending_idx = queue->pending_ring[index]; in xenvif_get_requests()
453 xenvif_tx_create_map_op(queue, pending_idx, txp, in xenvif_get_requests()
470 index = pending_index(queue->pending_cons++); in xenvif_get_requests()
471 pending_idx = queue->pending_ring[index]; in xenvif_get_requests()
472 xenvif_tx_create_map_op(queue, pending_idx, txp, 0, in xenvif_get_requests()
481 (*copy_ops) = cop - queue->tx_copy_ops; in xenvif_get_requests()
482 (*map_ops) = gop - queue->tx_map_ops; in xenvif_get_requests()
485 static inline void xenvif_grant_handle_set(struct xenvif_queue *queue, in xenvif_grant_handle_set() argument
489 if (unlikely(queue->grant_tx_handle[pending_idx] != in xenvif_grant_handle_set()
491 netdev_err(queue->vif->dev, in xenvif_grant_handle_set()
496 queue->grant_tx_handle[pending_idx] = handle; in xenvif_grant_handle_set()
499 static inline void xenvif_grant_handle_reset(struct xenvif_queue *queue, in xenvif_grant_handle_reset() argument
502 if (unlikely(queue->grant_tx_handle[pending_idx] == in xenvif_grant_handle_reset()
504 netdev_err(queue->vif->dev, in xenvif_grant_handle_reset()
509 queue->grant_tx_handle[pending_idx] = NETBACK_INVALID_HANDLE; in xenvif_grant_handle_reset()
512 static int xenvif_tx_check_gop(struct xenvif_queue *queue, in xenvif_tx_check_gop() argument
543 xenvif_idx_release(queue, pending_idx, in xenvif_tx_check_gop()
548 netdev_dbg(queue->vif->dev, in xenvif_tx_check_gop()
555 xenvif_idx_release(queue, pending_idx, in xenvif_tx_check_gop()
571 xenvif_grant_handle_set(queue, in xenvif_tx_check_gop()
576 xenvif_idx_unmap(queue, pending_idx); in xenvif_tx_check_gop()
582 xenvif_idx_release(queue, pending_idx, in xenvif_tx_check_gop()
585 xenvif_idx_release(queue, pending_idx, in xenvif_tx_check_gop()
593 netdev_dbg(queue->vif->dev, in xenvif_tx_check_gop()
600 xenvif_idx_release(queue, pending_idx, XEN_NETIF_RSP_ERROR); in xenvif_tx_check_gop()
609 xenvif_idx_unmap(queue, pending_idx); in xenvif_tx_check_gop()
610 xenvif_idx_release(queue, pending_idx, in xenvif_tx_check_gop()
620 xenvif_idx_unmap(queue, pending_idx); in xenvif_tx_check_gop()
621 xenvif_idx_release(queue, pending_idx, in xenvif_tx_check_gop()
642 static void xenvif_fill_frags(struct xenvif_queue *queue, struct sk_buff *skb) in xenvif_fill_frags() argument
660 &callback_param(queue, pending_idx); in xenvif_fill_frags()
662 callback_param(queue, prev_pending_idx).ctx = in xenvif_fill_frags()
663 &callback_param(queue, pending_idx); in xenvif_fill_frags()
665 callback_param(queue, pending_idx).ctx = NULL; in xenvif_fill_frags()
668 txp = &queue->pending_tx_info[pending_idx].req; in xenvif_fill_frags()
669 page = virt_to_page(idx_to_kaddr(queue, pending_idx)); in xenvif_fill_frags()
676 get_page(queue->mmap_pages[pending_idx]); in xenvif_fill_frags()
680 static int xenvif_get_extras(struct xenvif_queue *queue, in xenvif_get_extras() argument
686 RING_IDX cons = queue->tx.req_cons; in xenvif_get_extras()
690 netdev_err(queue->vif->dev, "Missing extra info\n"); in xenvif_get_extras()
691 xenvif_fatal_tx_err(queue->vif); in xenvif_get_extras()
695 RING_COPY_REQUEST(&queue->tx, cons, &extra); in xenvif_get_extras()
697 queue->tx.req_cons = ++cons; in xenvif_get_extras()
702 netdev_err(queue->vif->dev, in xenvif_get_extras()
704 xenvif_fatal_tx_err(queue->vif); in xenvif_get_extras()
743 static int checksum_setup(struct xenvif_queue *queue, struct sk_buff *skb) in checksum_setup() argument
753 queue->stats.rx_gso_checksum_fixup++; in checksum_setup()
765 static bool tx_credit_exceeded(struct xenvif_queue *queue, unsigned size) in tx_credit_exceeded() argument
768 u64 next_credit = queue->credit_window_start + in tx_credit_exceeded()
769 msecs_to_jiffies(queue->credit_usec / 1000); in tx_credit_exceeded()
772 if (timer_pending(&queue->credit_timeout)) { in tx_credit_exceeded()
773 queue->rate_limited = true; in tx_credit_exceeded()
779 queue->credit_window_start = now; in tx_credit_exceeded()
780 tx_add_credit(queue); in tx_credit_exceeded()
784 if (size > queue->remaining_credit) { in tx_credit_exceeded()
785 mod_timer(&queue->credit_timeout, in tx_credit_exceeded()
787 queue->credit_window_start = next_credit; in tx_credit_exceeded()
788 queue->rate_limited = true; in tx_credit_exceeded()
855 /* No need for locking or RCU here. NAPI poll and TX queue in xenvif_mcast_addr_list_free()
870 static void xenvif_tx_build_gops(struct xenvif_queue *queue, in xenvif_tx_build_gops() argument
879 while (skb_queue_len(&queue->tx_queue) < budget) { in xenvif_tx_build_gops()
890 if (queue->tx.sring->req_prod - queue->tx.req_cons > in xenvif_tx_build_gops()
892 netdev_err(queue->vif->dev, in xenvif_tx_build_gops()
895 queue->tx.sring->req_prod, queue->tx.req_cons, in xenvif_tx_build_gops()
897 xenvif_fatal_tx_err(queue->vif); in xenvif_tx_build_gops()
901 work_to_do = RING_HAS_UNCONSUMED_REQUESTS(&queue->tx); in xenvif_tx_build_gops()
905 idx = queue->tx.req_cons; in xenvif_tx_build_gops()
907 RING_COPY_REQUEST(&queue->tx, idx, &txreq); in xenvif_tx_build_gops()
910 if (txreq.size > queue->remaining_credit && in xenvif_tx_build_gops()
911 tx_credit_exceeded(queue, txreq.size)) in xenvif_tx_build_gops()
914 queue->remaining_credit -= txreq.size; in xenvif_tx_build_gops()
917 queue->tx.req_cons = ++idx; in xenvif_tx_build_gops()
922 work_to_do = xenvif_get_extras(queue, extras, in xenvif_tx_build_gops()
925 idx = queue->tx.req_cons; in xenvif_tx_build_gops()
934 ret = xenvif_mcast_add(queue->vif, extra->u.mcast.addr); in xenvif_tx_build_gops()
936 make_tx_response(queue, &txreq, extra_count, in xenvif_tx_build_gops()
940 push_tx_responses(queue); in xenvif_tx_build_gops()
948 xenvif_mcast_del(queue->vif, extra->u.mcast.addr); in xenvif_tx_build_gops()
950 make_tx_response(queue, &txreq, extra_count, in xenvif_tx_build_gops()
952 push_tx_responses(queue); in xenvif_tx_build_gops()
959 ret = xenvif_count_requests(queue, &txreq, extra_count, in xenvif_tx_build_gops()
968 netdev_dbg(queue->vif->dev, in xenvif_tx_build_gops()
970 xenvif_tx_err(queue, &txreq, extra_count, idx); in xenvif_tx_build_gops()
976 netdev_err(queue->vif->dev, in xenvif_tx_build_gops()
980 xenvif_fatal_tx_err(queue->vif); in xenvif_tx_build_gops()
984 index = pending_index(queue->pending_cons); in xenvif_tx_build_gops()
985 pending_idx = queue->pending_ring[index]; in xenvif_tx_build_gops()
992 netdev_dbg(queue->vif->dev, in xenvif_tx_build_gops()
994 xenvif_tx_err(queue, &txreq, extra_count, idx); in xenvif_tx_build_gops()
1012 xenvif_tx_err(queue, &txreq, extra_count, idx); in xenvif_tx_build_gops()
1014 netdev_err(queue->vif->dev, in xenvif_tx_build_gops()
1024 if (xenvif_set_skb_gso(queue->vif, skb, gso)) { in xenvif_tx_build_gops()
1060 xenvif_get_requests(queue, skb, &txreq, txfrags, copy_ops, in xenvif_tx_build_gops()
1064 __skb_queue_tail(&queue->tx_queue, skb); in xenvif_tx_build_gops()
1066 queue->tx.req_cons = idx; in xenvif_tx_build_gops()
1068 if ((*map_ops >= ARRAY_SIZE(queue->tx_map_ops)) || in xenvif_tx_build_gops()
1069 (*copy_ops >= ARRAY_SIZE(queue->tx_copy_ops))) in xenvif_tx_build_gops()
1079 static int xenvif_handle_frag_list(struct xenvif_queue *queue, struct sk_buff *skb) in xenvif_handle_frag_list() argument
1087 queue->stats.tx_zerocopy_sent += 2; in xenvif_handle_frag_list()
1088 queue->stats.tx_frag_overflow++; in xenvif_handle_frag_list()
1090 xenvif_fill_frags(queue, nskb); in xenvif_handle_frag_list()
1129 atomic_inc(&queue->inflight_packets); in xenvif_handle_frag_list()
1141 static int xenvif_tx_submit(struct xenvif_queue *queue) in xenvif_tx_submit() argument
1143 struct gnttab_map_grant_ref *gop_map = queue->tx_map_ops; in xenvif_tx_submit()
1144 struct gnttab_copy *gop_copy = queue->tx_copy_ops; in xenvif_tx_submit()
1148 while ((skb = __skb_dequeue(&queue->tx_queue)) != NULL) { in xenvif_tx_submit()
1153 txp = &queue->pending_tx_info[pending_idx].req; in xenvif_tx_submit()
1156 if (unlikely(xenvif_tx_check_gop(queue, skb, &gop_map, &gop_copy))) { in xenvif_tx_submit()
1176 xenvif_fill_frags(queue, skb); in xenvif_tx_submit()
1180 xenvif_skb_zerocopy_prepare(queue, nskb); in xenvif_tx_submit()
1181 if (xenvif_handle_frag_list(queue, skb)) { in xenvif_tx_submit()
1183 netdev_err(queue->vif->dev, in xenvif_tx_submit()
1185 xenvif_skb_zerocopy_prepare(queue, skb); in xenvif_tx_submit()
1194 skb->dev = queue->vif->dev; in xenvif_tx_submit()
1198 if (checksum_setup(queue, skb)) { in xenvif_tx_submit()
1199 netdev_dbg(queue->vif->dev, in xenvif_tx_submit()
1203 xenvif_skb_zerocopy_prepare(queue, skb); in xenvif_tx_submit()
1233 queue->stats.rx_bytes += skb->len; in xenvif_tx_submit()
1234 queue->stats.rx_packets++; in xenvif_tx_submit()
1244 xenvif_skb_zerocopy_prepare(queue, skb); in xenvif_tx_submit()
1245 queue->stats.tx_zerocopy_sent++; in xenvif_tx_submit()
1258 struct xenvif_queue *queue = ubuf_to_queue(ubuf); in xenvif_zerocopy_callback() local
1263 spin_lock_irqsave(&queue->callback_lock, flags); in xenvif_zerocopy_callback()
1267 BUG_ON(queue->dealloc_prod - queue->dealloc_cons >= in xenvif_zerocopy_callback()
1269 index = pending_index(queue->dealloc_prod); in xenvif_zerocopy_callback()
1270 queue->dealloc_ring[index] = pending_idx; in xenvif_zerocopy_callback()
1275 queue->dealloc_prod++; in xenvif_zerocopy_callback()
1277 spin_unlock_irqrestore(&queue->callback_lock, flags); in xenvif_zerocopy_callback()
1280 queue->stats.tx_zerocopy_success++; in xenvif_zerocopy_callback()
1282 queue->stats.tx_zerocopy_fail++; in xenvif_zerocopy_callback()
1283 xenvif_skb_zerocopy_complete(queue); in xenvif_zerocopy_callback()
1286 static inline void xenvif_tx_dealloc_action(struct xenvif_queue *queue) in xenvif_tx_dealloc_action() argument
1293 dc = queue->dealloc_cons; in xenvif_tx_dealloc_action()
1294 gop = queue->tx_unmap_ops; in xenvif_tx_dealloc_action()
1298 dp = queue->dealloc_prod; in xenvif_tx_dealloc_action()
1306 BUG_ON(gop - queue->tx_unmap_ops >= MAX_PENDING_REQS); in xenvif_tx_dealloc_action()
1308 queue->dealloc_ring[pending_index(dc++)]; in xenvif_tx_dealloc_action()
1310 pending_idx_release[gop - queue->tx_unmap_ops] = in xenvif_tx_dealloc_action()
1312 queue->pages_to_unmap[gop - queue->tx_unmap_ops] = in xenvif_tx_dealloc_action()
1313 queue->mmap_pages[pending_idx]; in xenvif_tx_dealloc_action()
1315 idx_to_kaddr(queue, pending_idx), in xenvif_tx_dealloc_action()
1317 queue->grant_tx_handle[pending_idx]); in xenvif_tx_dealloc_action()
1318 xenvif_grant_handle_reset(queue, pending_idx); in xenvif_tx_dealloc_action()
1322 } while (dp != queue->dealloc_prod); in xenvif_tx_dealloc_action()
1324 queue->dealloc_cons = dc; in xenvif_tx_dealloc_action()
1326 if (gop - queue->tx_unmap_ops > 0) { in xenvif_tx_dealloc_action()
1328 ret = gnttab_unmap_refs(queue->tx_unmap_ops, in xenvif_tx_dealloc_action()
1330 queue->pages_to_unmap, in xenvif_tx_dealloc_action()
1331 gop - queue->tx_unmap_ops); in xenvif_tx_dealloc_action()
1333 netdev_err(queue->vif->dev, "Unmap fail: nr_ops %tu ret %d\n", in xenvif_tx_dealloc_action()
1334 gop - queue->tx_unmap_ops, ret); in xenvif_tx_dealloc_action()
1335 for (i = 0; i < gop - queue->tx_unmap_ops; ++i) { in xenvif_tx_dealloc_action()
1337 netdev_err(queue->vif->dev, in xenvif_tx_dealloc_action()
1347 for (i = 0; i < gop - queue->tx_unmap_ops; ++i) in xenvif_tx_dealloc_action()
1348 xenvif_idx_release(queue, pending_idx_release[i], in xenvif_tx_dealloc_action()
1354 int xenvif_tx_action(struct xenvif_queue *queue, int budget) in xenvif_tx_action() argument
1359 if (unlikely(!tx_work_todo(queue))) in xenvif_tx_action()
1362 xenvif_tx_build_gops(queue, budget, &nr_cops, &nr_mops); in xenvif_tx_action()
1367 gnttab_batch_copy(queue->tx_copy_ops, nr_cops); in xenvif_tx_action()
1369 ret = gnttab_map_refs(queue->tx_map_ops, in xenvif_tx_action()
1371 queue->pages_to_map, in xenvif_tx_action()
1376 netdev_err(queue->vif->dev, "Map fail: nr %u ret %d\n", in xenvif_tx_action()
1379 WARN_ON_ONCE(queue->tx_map_ops[i].status == in xenvif_tx_action()
1384 work_done = xenvif_tx_submit(queue); in xenvif_tx_action()
1389 static void xenvif_idx_release(struct xenvif_queue *queue, u16 pending_idx, in xenvif_idx_release() argument
1396 pending_tx_info = &queue->pending_tx_info[pending_idx]; in xenvif_idx_release()
1398 spin_lock_irqsave(&queue->response_lock, flags); in xenvif_idx_release()
1400 make_tx_response(queue, &pending_tx_info->req, in xenvif_idx_release()
1407 index = pending_index(queue->pending_prod++); in xenvif_idx_release()
1408 queue->pending_ring[index] = pending_idx; in xenvif_idx_release()
1410 push_tx_responses(queue); in xenvif_idx_release()
1412 spin_unlock_irqrestore(&queue->response_lock, flags); in xenvif_idx_release()
1416 static void make_tx_response(struct xenvif_queue *queue, in make_tx_response() argument
1421 RING_IDX i = queue->tx.rsp_prod_pvt; in make_tx_response()
1424 resp = RING_GET_RESPONSE(&queue->tx, i); in make_tx_response()
1429 RING_GET_RESPONSE(&queue->tx, ++i)->status = XEN_NETIF_RSP_NULL; in make_tx_response()
1431 queue->tx.rsp_prod_pvt = ++i; in make_tx_response()
1434 static void push_tx_responses(struct xenvif_queue *queue) in push_tx_responses() argument
1438 RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&queue->tx, notify); in push_tx_responses()
1440 notify_remote_via_irq(queue->tx_irq); in push_tx_responses()
1443 void xenvif_idx_unmap(struct xenvif_queue *queue, u16 pending_idx) in xenvif_idx_unmap() argument
1449 idx_to_kaddr(queue, pending_idx), in xenvif_idx_unmap()
1451 queue->grant_tx_handle[pending_idx]); in xenvif_idx_unmap()
1452 xenvif_grant_handle_reset(queue, pending_idx); in xenvif_idx_unmap()
1455 &queue->mmap_pages[pending_idx], 1); in xenvif_idx_unmap()
1457 netdev_err(queue->vif->dev, in xenvif_idx_unmap()
1468 static inline int tx_work_todo(struct xenvif_queue *queue) in tx_work_todo() argument
1470 if (likely(RING_HAS_UNCONSUMED_REQUESTS(&queue->tx))) in tx_work_todo()
1476 static inline bool tx_dealloc_work_todo(struct xenvif_queue *queue) in tx_dealloc_work_todo() argument
1478 return queue->dealloc_cons != queue->dealloc_prod; in tx_dealloc_work_todo()
1481 void xenvif_unmap_frontend_data_rings(struct xenvif_queue *queue) in xenvif_unmap_frontend_data_rings() argument
1483 if (queue->tx.sring) in xenvif_unmap_frontend_data_rings()
1484 xenbus_unmap_ring_vfree(xenvif_to_xenbus_device(queue->vif), in xenvif_unmap_frontend_data_rings()
1485 queue->tx.sring); in xenvif_unmap_frontend_data_rings()
1486 if (queue->rx.sring) in xenvif_unmap_frontend_data_rings()
1487 xenbus_unmap_ring_vfree(xenvif_to_xenbus_device(queue->vif), in xenvif_unmap_frontend_data_rings()
1488 queue->rx.sring); in xenvif_unmap_frontend_data_rings()
1491 int xenvif_map_frontend_data_rings(struct xenvif_queue *queue, in xenvif_map_frontend_data_rings() argument
1501 err = xenbus_map_ring_valloc(xenvif_to_xenbus_device(queue->vif), in xenvif_map_frontend_data_rings()
1510 BACK_RING_ATTACH(&queue->tx, txs, rsp_prod, XEN_PAGE_SIZE); in xenvif_map_frontend_data_rings()
1513 if (req_prod - rsp_prod > RING_SIZE(&queue->tx)) in xenvif_map_frontend_data_rings()
1516 err = xenbus_map_ring_valloc(xenvif_to_xenbus_device(queue->vif), in xenvif_map_frontend_data_rings()
1525 BACK_RING_ATTACH(&queue->rx, rxs, rsp_prod, XEN_PAGE_SIZE); in xenvif_map_frontend_data_rings()
1528 if (req_prod - rsp_prod > RING_SIZE(&queue->rx)) in xenvif_map_frontend_data_rings()
1534 xenvif_unmap_frontend_data_rings(queue); in xenvif_map_frontend_data_rings()
1538 static bool xenvif_dealloc_kthread_should_stop(struct xenvif_queue *queue) in xenvif_dealloc_kthread_should_stop() argument
1544 !atomic_read(&queue->inflight_packets); in xenvif_dealloc_kthread_should_stop()
1549 struct xenvif_queue *queue = data; in xenvif_dealloc_kthread() local
1552 wait_event_interruptible(queue->dealloc_wq, in xenvif_dealloc_kthread()
1553 tx_dealloc_work_todo(queue) || in xenvif_dealloc_kthread()
1554 xenvif_dealloc_kthread_should_stop(queue)); in xenvif_dealloc_kthread()
1555 if (xenvif_dealloc_kthread_should_stop(queue)) in xenvif_dealloc_kthread()
1558 xenvif_tx_dealloc_action(queue); in xenvif_dealloc_kthread()
1563 if (tx_dealloc_work_todo(queue)) in xenvif_dealloc_kthread()
1564 xenvif_tx_dealloc_action(queue); in xenvif_dealloc_kthread()