Lines Matching refs:tap
144 static int tap_enable_queue(struct tap_dev *tap, struct file *file, in tap_enable_queue() argument
155 rcu_assign_pointer(tap->taps[tap->numvtaps], q); in tap_enable_queue()
156 q->queue_index = tap->numvtaps; in tap_enable_queue()
159 tap->numvtaps++; in tap_enable_queue()
165 static int tap_set_queue(struct tap_dev *tap, struct file *file, in tap_set_queue() argument
168 if (tap->numqueues == MAX_TAP_QUEUES) in tap_set_queue()
171 rcu_assign_pointer(q->tap, tap); in tap_set_queue()
172 rcu_assign_pointer(tap->taps[tap->numvtaps], q); in tap_set_queue()
176 q->queue_index = tap->numvtaps; in tap_set_queue()
179 list_add_tail(&q->next, &tap->queue_list); in tap_set_queue()
181 tap->numvtaps++; in tap_set_queue()
182 tap->numqueues++; in tap_set_queue()
189 struct tap_dev *tap; in tap_disable_queue() local
196 tap = rtnl_dereference(q->tap); in tap_disable_queue()
198 if (tap) { in tap_disable_queue()
200 BUG_ON(index >= tap->numvtaps); in tap_disable_queue()
201 nq = rtnl_dereference(tap->taps[tap->numvtaps - 1]); in tap_disable_queue()
204 rcu_assign_pointer(tap->taps[index], nq); in tap_disable_queue()
205 RCU_INIT_POINTER(tap->taps[tap->numvtaps - 1], NULL); in tap_disable_queue()
208 tap->numvtaps--; in tap_disable_queue()
224 struct tap_dev *tap; in tap_put_queue() local
227 tap = rtnl_dereference(q->tap); in tap_put_queue()
229 if (tap) { in tap_put_queue()
233 tap->numqueues--; in tap_put_queue()
234 RCU_INIT_POINTER(q->tap, NULL); in tap_put_queue()
252 static struct tap_queue *tap_get_queue(struct tap_dev *tap, in tap_get_queue() argument
261 int numvtaps = READ_ONCE(tap->numvtaps); in tap_get_queue()
273 queue = rcu_dereference(tap->taps[rxq % numvtaps]); in tap_get_queue()
283 queue = rcu_dereference(tap->taps[rxq]); in tap_get_queue()
288 queue = rcu_dereference(tap->taps[0]); in tap_get_queue()
298 void tap_del_queues(struct tap_dev *tap) in tap_del_queues() argument
303 list_for_each_entry_safe(q, tmp, &tap->queue_list, next) { in tap_del_queues()
305 RCU_INIT_POINTER(q->tap, NULL); in tap_del_queues()
307 tap->numvtaps--; in tap_del_queues()
308 tap->numqueues--; in tap_del_queues()
311 BUG_ON(tap->numvtaps); in tap_del_queues()
312 BUG_ON(tap->numqueues); in tap_del_queues()
314 tap->numvtaps = MAX_TAP_QUEUES; in tap_del_queues()
322 struct tap_dev *tap; in tap_handle_frame() local
326 tap = tap_dev_get_rcu(dev); in tap_handle_frame()
327 if (!tap) in tap_handle_frame()
330 q = tap_get_queue(tap, skb); in tap_handle_frame()
341 features |= tap->tap_features; in tap_handle_frame()
386 if (tap->count_rx_dropped) in tap_handle_frame()
387 tap->count_rx_dropped(tap); in tap_handle_frame()
405 int tap_get_minor(dev_t major, struct tap_dev *tap) in tap_get_minor() argument
418 retval = idr_alloc(&tap_major->minor_idr, tap, 1, TAP_NUM_DEVS, GFP_ATOMIC); in tap_get_minor()
420 tap->minor = retval; in tap_get_minor()
422 netdev_err(tap->dev, "Too many tap devices\n"); in tap_get_minor()
433 void tap_free_minor(dev_t major, struct tap_dev *tap) in tap_free_minor() argument
444 if (tap->minor) { in tap_free_minor()
445 idr_remove(&tap_major->minor_idr, tap->minor); in tap_free_minor()
446 tap->minor = 0; in tap_free_minor()
458 struct tap_dev *tap; in dev_get_by_tap_file() local
464 tap = NULL; in dev_get_by_tap_file()
469 tap = idr_find(&tap_major->minor_idr, minor); in dev_get_by_tap_file()
470 if (tap) { in dev_get_by_tap_file()
471 dev = tap->dev; in dev_get_by_tap_file()
478 return tap; in dev_get_by_tap_file()
504 struct tap_dev *tap; in tap_open() local
509 tap = dev_get_by_tap_file(imajor(inode), iminor(inode)); in tap_open()
510 if (!tap) in tap_open()
518 if (ptr_ring_init(&q->ring, tap->dev->tx_queue_len, GFP_KERNEL)) { in tap_open()
541 if ((tap->dev->features & NETIF_F_HIGHDMA) && (tap->dev->features & NETIF_F_SG)) in tap_open()
544 err = tap_set_queue(tap, file, q); in tap_open()
550 dev_put(tap->dev); in tap_open()
558 if (tap) in tap_open()
559 dev_put(tap->dev); in tap_open()
627 struct tap_dev *tap; in tap_get_user() local
724 tap = rcu_dereference(q->tap); in tap_get_user()
735 if (tap) { in tap_get_user()
736 skb->dev = tap->dev; in tap_get_user()
750 tap = rcu_dereference(q->tap); in tap_get_user()
751 if (tap && tap->count_tx_dropped) in tap_get_user()
752 tap->count_tx_dropped(tap); in tap_get_user()
889 struct tap_dev *tap; in tap_get_tap_dev() local
892 tap = rtnl_dereference(q->tap); in tap_get_tap_dev()
893 if (tap) in tap_get_tap_dev()
894 dev_hold(tap->dev); in tap_get_tap_dev()
896 return tap; in tap_get_tap_dev()
899 static void tap_put_tap_dev(struct tap_dev *tap) in tap_put_tap_dev() argument
901 dev_put(tap->dev); in tap_put_tap_dev()
907 struct tap_dev *tap; in tap_ioctl_set_queue() local
910 tap = tap_get_tap_dev(q); in tap_ioctl_set_queue()
911 if (!tap) in tap_ioctl_set_queue()
915 ret = tap_enable_queue(tap, file, q); in tap_ioctl_set_queue()
921 tap_put_tap_dev(tap); in tap_ioctl_set_queue()
927 struct tap_dev *tap; in set_offload() local
931 tap = rtnl_dereference(q->tap); in set_offload()
932 if (!tap) in set_offload()
935 features = tap->dev->features; in set_offload()
966 tap->tap_features = feature_mask; in set_offload()
967 if (tap->update_features) in set_offload()
968 tap->update_features(tap, features); in set_offload()
980 struct tap_dev *tap; in tap_ioctl() local
1006 tap = tap_get_tap_dev(q); in tap_ioctl()
1007 if (!tap) { in tap_ioctl()
1014 if (copy_to_user(&ifr->ifr_name, tap->dev->name, IFNAMSIZ) || in tap_ioctl()
1017 tap_put_tap_dev(tap); in tap_ioctl()
1092 tap = tap_get_tap_dev(q); in tap_ioctl()
1093 if (!tap) { in tap_ioctl()
1098 u = tap->dev->type; in tap_ioctl()
1099 if (copy_to_user(&ifr->ifr_name, tap->dev->name, IFNAMSIZ) || in tap_ioctl()
1100 copy_to_user(&ifr->ifr_hwaddr.sa_data, tap->dev->dev_addr, ETH_ALEN) || in tap_ioctl()
1103 tap_put_tap_dev(tap); in tap_ioctl()
1111 tap = tap_get_tap_dev(q); in tap_ioctl()
1112 if (!tap) { in tap_ioctl()
1116 ret = dev_set_mac_address(tap->dev, &sa, NULL); in tap_ioctl()
1117 tap_put_tap_dev(tap); in tap_ioctl()
1154 struct tap_dev *tap; in tap_get_user_xdp() local
1187 tap = rcu_dereference(q->tap); in tap_get_user_xdp()
1188 if (tap) { in tap_get_user_xdp()
1189 skb->dev = tap->dev; in tap_get_user_xdp()
1203 tap = rcu_dereference(q->tap); in tap_get_user_xdp()
1204 if (tap && tap->count_tx_dropped) in tap_get_user_xdp()
1205 tap->count_tx_dropped(tap); in tap_get_user_xdp()
1291 int tap_queue_resize(struct tap_dev *tap) in tap_queue_resize() argument
1293 struct net_device *dev = tap->dev; in tap_queue_resize()
1296 int n = tap->numqueues; in tap_queue_resize()
1303 list_for_each_entry(q, &tap->queue_list, next) in tap_queue_resize()