Lines Matching refs:tfile
228 struct tun_file *tfile = container_of(napi, struct tun_file, napi); in tun_napi_receive() local
229 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_napi_receive()
266 static void tun_napi_init(struct tun_struct *tun, struct tun_file *tfile, in tun_napi_init() argument
269 tfile->napi_enabled = napi_en; in tun_napi_init()
270 tfile->napi_frags_enabled = napi_en && napi_frags; in tun_napi_init()
272 netif_napi_add_tx(tun->dev, &tfile->napi, tun_napi_poll); in tun_napi_init()
273 napi_enable(&tfile->napi); in tun_napi_init()
277 static void tun_napi_enable(struct tun_file *tfile) in tun_napi_enable() argument
279 if (tfile->napi_enabled) in tun_napi_enable()
280 napi_enable(&tfile->napi); in tun_napi_enable()
283 static void tun_napi_disable(struct tun_file *tfile) in tun_napi_disable() argument
285 if (tfile->napi_enabled) in tun_napi_disable()
286 napi_disable(&tfile->napi); in tun_napi_disable()
289 static void tun_napi_del(struct tun_file *tfile) in tun_napi_del() argument
291 if (tfile->napi_enabled) in tun_napi_del()
292 netif_napi_del(&tfile->napi); in tun_napi_del()
295 static bool tun_napi_frags_enabled(const struct tun_file *tfile) in tun_napi_frags_enabled() argument
297 return tfile->napi_frags_enabled; in tun_napi_frags_enabled()
411 struct tun_file *tfile) in tun_flow_update() argument
416 u16 queue_index = tfile->queue_index; in tun_flow_update()
528 static void tun_disable_queue(struct tun_struct *tun, struct tun_file *tfile) in tun_disable_queue() argument
530 tfile->detached = tun; in tun_disable_queue()
531 list_add_tail(&tfile->next, &tun->disabled); in tun_disable_queue()
535 static struct tun_struct *tun_enable_queue(struct tun_file *tfile) in tun_enable_queue() argument
537 struct tun_struct *tun = tfile->detached; in tun_enable_queue()
539 tfile->detached = NULL; in tun_enable_queue()
540 list_del_init(&tfile->next); in tun_enable_queue()
559 static void tun_queue_purge(struct tun_file *tfile) in tun_queue_purge() argument
563 while ((ptr = ptr_ring_consume(&tfile->tx_ring)) != NULL) in tun_queue_purge()
566 skb_queue_purge(&tfile->sk.sk_write_queue); in tun_queue_purge()
567 skb_queue_purge(&tfile->sk.sk_error_queue); in tun_queue_purge()
570 static void __tun_detach(struct tun_file *tfile, bool clean) in __tun_detach() argument
575 tun = rtnl_dereference(tfile->tun); in __tun_detach()
578 if (!tfile->detached) in __tun_detach()
579 tun_napi_disable(tfile); in __tun_detach()
580 tun_napi_del(tfile); in __tun_detach()
583 if (tun && !tfile->detached) { in __tun_detach()
584 u16 index = tfile->queue_index; in __tun_detach()
597 RCU_INIT_POINTER(tfile->tun, NULL); in __tun_detach()
598 sock_put(&tfile->sk); in __tun_detach()
600 tun_disable_queue(tun, tfile); in __tun_detach()
601 tun_napi_disable(tfile); in __tun_detach()
607 tun_queue_purge(tfile); in __tun_detach()
609 } else if (tfile->detached && clean) { in __tun_detach()
610 tun = tun_enable_queue(tfile); in __tun_detach()
611 sock_put(&tfile->sk); in __tun_detach()
623 xdp_rxq_info_unreg(&tfile->xdp_rxq); in __tun_detach()
624 ptr_ring_cleanup(&tfile->tx_ring, tun_ptr_free); in __tun_detach()
628 static void tun_detach(struct tun_file *tfile, bool clean) in tun_detach() argument
634 tun = rtnl_dereference(tfile->tun); in tun_detach()
636 __tun_detach(tfile, clean); in tun_detach()
642 sock_put(&tfile->sk); in tun_detach()
648 struct tun_file *tfile, *tmp; in tun_detach_all() local
652 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_all()
653 BUG_ON(!tfile); in tun_detach_all()
654 tun_napi_disable(tfile); in tun_detach_all()
655 tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN; in tun_detach_all()
656 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_detach_all()
657 RCU_INIT_POINTER(tfile->tun, NULL); in tun_detach_all()
660 list_for_each_entry(tfile, &tun->disabled, next) { in tun_detach_all()
661 tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN; in tun_detach_all()
662 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_detach_all()
663 RCU_INIT_POINTER(tfile->tun, NULL); in tun_detach_all()
669 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_all()
670 tun_napi_del(tfile); in tun_detach_all()
672 tun_queue_purge(tfile); in tun_detach_all()
673 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_detach_all()
674 sock_put(&tfile->sk); in tun_detach_all()
676 list_for_each_entry_safe(tfile, tmp, &tun->disabled, next) { in tun_detach_all()
677 tun_napi_del(tfile); in tun_detach_all()
678 tun_enable_queue(tfile); in tun_detach_all()
679 tun_queue_purge(tfile); in tun_detach_all()
680 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_detach_all()
681 sock_put(&tfile->sk); in tun_detach_all()
693 struct tun_file *tfile = file->private_data; in tun_attach() local
697 err = security_tun_dev_attach(tfile->socket.sk, tun->security); in tun_attach()
702 if (rtnl_dereference(tfile->tun) && !tfile->detached) in tun_attach()
710 if (!tfile->detached && in tun_attach()
718 lock_sock(tfile->socket.sk); in tun_attach()
719 err = sk_attach_filter(&tun->fprog, tfile->socket.sk); in tun_attach()
720 release_sock(tfile->socket.sk); in tun_attach()
725 if (!tfile->detached && in tun_attach()
726 ptr_ring_resize(&tfile->tx_ring, dev->tx_queue_len, in tun_attach()
732 tfile->queue_index = tun->numqueues; in tun_attach()
733 tfile->socket.sk->sk_shutdown &= ~RCV_SHUTDOWN; in tun_attach()
735 if (tfile->detached) { in tun_attach()
737 WARN_ON(!xdp_rxq_info_is_reg(&tfile->xdp_rxq)); in tun_attach()
739 if (tfile->xdp_rxq.queue_index != tfile->queue_index) in tun_attach()
740 tfile->xdp_rxq.queue_index = tfile->queue_index; in tun_attach()
743 err = xdp_rxq_info_reg(&tfile->xdp_rxq, in tun_attach()
744 tun->dev, tfile->queue_index, 0); in tun_attach()
747 err = xdp_rxq_info_reg_mem_model(&tfile->xdp_rxq, in tun_attach()
750 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_attach()
756 if (tfile->detached) { in tun_attach()
757 tun_enable_queue(tfile); in tun_attach()
758 tun_napi_enable(tfile); in tun_attach()
760 sock_hold(&tfile->sk); in tun_attach()
761 tun_napi_init(tun, tfile, napi, napi_frags); in tun_attach()
765 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_attach()
776 rcu_assign_pointer(tfile->tun, tun); in tun_attach()
777 rcu_assign_pointer(tun->tfiles[tun->numqueues], tfile); in tun_attach()
784 static struct tun_struct *tun_get(struct tun_file *tfile) in tun_get() argument
789 tun = rcu_dereference(tfile->tun); in tun_get()
1007 struct tun_file *tfile; in tun_net_xmit() local
1011 tfile = rcu_dereference(tun->tfiles[txq]); in tun_net_xmit()
1014 if (!tfile) { in tun_net_xmit()
1032 if (tfile->socket.sk->sk_filter && in tun_net_xmit()
1033 sk_filter(tfile->socket.sk, skb)) { in tun_net_xmit()
1063 if (ptr_ring_produce(&tfile->tx_ring, skb)) { in tun_net_xmit()
1073 if (tfile->flags & TUN_FASYNC) in tun_net_xmit()
1074 kill_fasync(&tfile->fasync, SIGIO, POLL_IN); in tun_net_xmit()
1075 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_net_xmit()
1130 struct tun_file *tfile; in tun_xdp_set() local
1140 tfile = rtnl_dereference(tun->tfiles[i]); in tun_xdp_set()
1142 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1144 sock_reset_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1146 list_for_each_entry(tfile, &tun->disabled, next) { in tun_xdp_set()
1148 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1150 sock_reset_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1194 static void __tun_xdp_flush_tfile(struct tun_file *tfile) in __tun_xdp_flush_tfile() argument
1197 if (tfile->flags & TUN_FASYNC) in __tun_xdp_flush_tfile()
1198 kill_fasync(&tfile->fasync, SIGIO, POLL_IN); in __tun_xdp_flush_tfile()
1199 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in __tun_xdp_flush_tfile()
1206 struct tun_file *tfile; in tun_xdp_xmit() local
1223 tfile = rcu_dereference(tun->tfiles[smp_processor_id() % in tun_xdp_xmit()
1225 if (unlikely(!tfile)) in tun_xdp_xmit()
1228 spin_lock(&tfile->tx_ring.producer_lock); in tun_xdp_xmit()
1236 if (__ptr_ring_produce(&tfile->tx_ring, frame)) { in tun_xdp_xmit()
1242 spin_unlock(&tfile->tx_ring.producer_lock); in tun_xdp_xmit()
1245 __tun_xdp_flush_tfile(tfile); in tun_xdp_xmit()
1346 static bool tun_sock_writeable(struct tun_struct *tun, struct tun_file *tfile) in tun_sock_writeable() argument
1348 struct sock *sk = tfile->socket.sk; in tun_sock_writeable()
1358 struct tun_file *tfile = file->private_data; in tun_chr_poll() local
1359 struct tun_struct *tun = tun_get(tfile); in tun_chr_poll()
1366 sk = tfile->socket.sk; in tun_chr_poll()
1370 if (!ptr_ring_empty(&tfile->tx_ring)) in tun_chr_poll()
1378 if (tun_sock_writeable(tun, tfile) || in tun_chr_poll()
1380 tun_sock_writeable(tun, tfile))) in tun_chr_poll()
1390 static struct sk_buff *tun_napi_alloc_frags(struct tun_file *tfile, in tun_napi_alloc_frags() argument
1404 skb = napi_get_frags(&tfile->napi); in tun_napi_alloc_frags()
1441 napi_free_frags(&tfile->napi); in tun_napi_alloc_frags()
1447 static struct sk_buff *tun_alloc_skb(struct tun_file *tfile, in tun_alloc_skb() argument
1451 struct sock *sk = tfile->socket.sk; in tun_alloc_skb()
1474 static void tun_rx_batched(struct tun_struct *tun, struct tun_file *tfile, in tun_rx_batched() argument
1477 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_rx_batched()
1484 skb_record_rx_queue(skb, tfile->queue_index); in tun_rx_batched()
1505 skb_record_rx_queue(nskb, tfile->queue_index); in tun_rx_batched()
1508 skb_record_rx_queue(skb, tfile->queue_index); in tun_rx_batched()
1514 static bool tun_can_build_skb(struct tun_struct *tun, struct tun_file *tfile, in tun_can_build_skb() argument
1520 if (tfile->socket.sk->sk_sndbuf != INT_MAX) in tun_can_build_skb()
1536 static struct sk_buff *__tun_build_skb(struct tun_file *tfile, in __tun_build_skb() argument
1550 skb_set_owner_w(skb, tfile->socket.sk); in __tun_build_skb()
1597 struct tun_file *tfile, in tun_build_skb() argument
1636 return __tun_build_skb(tfile, alloc_frag, buf, buflen, len, in tun_build_skb()
1650 xdp_init_buff(&xdp, buflen, &tfile->xdp_rxq); in tun_build_skb()
1682 return __tun_build_skb(tfile, alloc_frag, buf, buflen, len, pad, in tun_build_skb()
1693 static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, in tun_get_user() argument
1709 bool frags = tun_napi_frags_enabled(tfile); in tun_get_user()
1753 if (!frags && tun_can_build_skb(tun, tfile, len, noblock, zerocopy)) { in tun_get_user()
1758 skb = tun_build_skb(tun, tfile, from, &gso, len, &skb_xdp); in tun_get_user()
1771 mutex_lock(&tfile->napi_mutex); in tun_get_user()
1772 skb = tun_napi_alloc_frags(tfile, copylen, from); in tun_get_user()
1782 skb = tun_alloc_skb(tfile, align, copylen, linear, in tun_get_user()
1850 skb_record_rx_queue(skb, tfile->queue_index); in tun_get_user()
1876 !tfile->detached) in tun_get_user()
1900 napi_free_frags(&tfile->napi); in tun_get_user()
1902 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1906 if (likely(napi_schedule_prep(&tfile->napi))) { in tun_get_user()
1908 napi_gro_frags(&tfile->napi); in tun_get_user()
1909 napi_complete(&tfile->napi); in tun_get_user()
1915 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1916 } else if (tfile->napi_enabled) { in tun_get_user()
1917 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_get_user()
1922 if (unlikely(tfile->detached)) { in tun_get_user()
1934 napi_schedule(&tfile->napi); in tun_get_user()
1938 tun_rx_batched(tun, tfile, skb, more); in tun_get_user()
1949 tun_flow_update(tun, rxhash, tfile); in tun_get_user()
1963 tfile->napi.skb = NULL; in tun_get_user()
1964 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1973 struct tun_file *tfile = file->private_data; in tun_chr_write_iter() local
1974 struct tun_struct *tun = tun_get(tfile); in tun_chr_write_iter()
1984 result = tun_get_user(tun, tfile, NULL, from, noblock, false); in tun_chr_write_iter()
1991 struct tun_file *tfile, in tun_put_user_xdp() argument
2019 struct tun_file *tfile, in tun_put_user() argument
2093 static void *tun_ring_recv(struct tun_file *tfile, int noblock, int *err) in tun_ring_recv() argument
2099 ptr = ptr_ring_consume(&tfile->tx_ring); in tun_ring_recv()
2107 add_wait_queue(&tfile->socket.wq.wait, &wait); in tun_ring_recv()
2111 ptr = ptr_ring_consume(&tfile->tx_ring); in tun_ring_recv()
2118 if (tfile->socket.sk->sk_shutdown & RCV_SHUTDOWN) { in tun_ring_recv()
2127 remove_wait_queue(&tfile->socket.wq.wait, &wait); in tun_ring_recv()
2134 static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile, in tun_do_read() argument
2148 ptr = tun_ring_recv(tfile, noblock, &err); in tun_do_read()
2156 ret = tun_put_user_xdp(tun, tfile, xdpf, to); in tun_do_read()
2161 ret = tun_put_user(tun, tfile, skb, to); in tun_do_read()
2174 struct tun_file *tfile = file->private_data; in tun_chr_read_iter() local
2175 struct tun_struct *tun = tun_get(tfile); in tun_chr_read_iter()
2185 ret = tun_do_read(tun, tfile, to, noblock, NULL); in tun_chr_read_iter()
2329 struct tun_file *tfile; in tun_sock_write_space() local
2343 tfile = container_of(sk, struct tun_file, sk); in tun_sock_write_space()
2344 kill_fasync(&tfile->fasync, SIGIO, POLL_OUT); in tun_sock_write_space()
2354 struct tun_file *tfile, in tun_xdp_one() argument
2381 xdp_init_buff(xdp, buflen, &tfile->xdp_rxq); in tun_xdp_one()
2439 skb_record_rx_queue(skb, tfile->queue_index); in tun_xdp_one()
2450 !tfile->detached) in tun_xdp_one()
2453 if (tfile->napi_enabled) { in tun_xdp_one()
2454 queue = &tfile->sk.sk_write_queue; in tun_xdp_one()
2457 if (unlikely(tfile->detached)) { in tun_xdp_one()
2477 tun_flow_update(tun, rxhash, tfile); in tun_xdp_one()
2486 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_sendmsg() local
2487 struct tun_struct *tun = tun_get(tfile); in tun_sendmsg()
2509 ret = tun_xdp_one(tun, tfile, xdp, &flush, &tpage); in tun_sendmsg()
2517 if (tfile->napi_enabled && queued > 0) in tun_sendmsg()
2518 napi_schedule(&tfile->napi); in tun_sendmsg()
2530 ret = tun_get_user(tun, tfile, ctl ? ctl->ptr : NULL, &m->msg_iter, in tun_sendmsg()
2541 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_recvmsg() local
2542 struct tun_struct *tun = tun_get(tfile); in tun_recvmsg()
2560 ret = tun_do_read(tun, tfile, &m->msg_iter, flags & MSG_DONTWAIT, ptr); in tun_recvmsg()
2592 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_peek_len() local
2596 tun = tun_get(tfile); in tun_peek_len()
2600 ret = PTR_RING_PEEK_CALL(&tfile->tx_ring, tun_ptr_peek_len); in tun_peek_len()
2669 struct tun_file *tfile = file->private_data; in tun_set_iff() local
2673 if (tfile->detached) in tun_set_iff()
2761 dev->ifindex = tfile->ifindex; in tun_set_iff()
2772 tun->sndbuf = tfile->socket.sk->sk_sndbuf; in tun_set_iff()
2789 rcu_assign_pointer(tfile->tun, tun); in tun_set_iff()
2862 struct tun_file *tfile; in tun_detach_filter() local
2865 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_filter()
2866 lock_sock(tfile->socket.sk); in tun_detach_filter()
2867 sk_detach_filter(tfile->socket.sk); in tun_detach_filter()
2868 release_sock(tfile->socket.sk); in tun_detach_filter()
2877 struct tun_file *tfile; in tun_attach_filter() local
2880 tfile = rtnl_dereference(tun->tfiles[i]); in tun_attach_filter()
2881 lock_sock(tfile->socket.sk); in tun_attach_filter()
2882 ret = sk_attach_filter(&tun->fprog, tfile->socket.sk); in tun_attach_filter()
2883 release_sock(tfile->socket.sk); in tun_attach_filter()
2896 struct tun_file *tfile; in tun_set_sndbuf() local
2900 tfile = rtnl_dereference(tun->tfiles[i]); in tun_set_sndbuf()
2901 tfile->socket.sk->sk_sndbuf = tun->sndbuf; in tun_set_sndbuf()
2907 struct tun_file *tfile = file->private_data; in tun_set_queue() local
2914 tun = tfile->detached; in tun_set_queue()
2925 tun = rtnl_dereference(tfile->tun); in tun_set_queue()
2926 if (!tun || !(tun->flags & IFF_MULTI_QUEUE) || tfile->detached) in tun_set_queue()
2929 __tun_detach(tfile, false); in tun_set_queue()
3003 struct tun_file *tfile = file->private_data; in __tun_chr_ioctl() local
3004 struct net *net = sock_net(&tfile->sk); in __tun_chr_ioctl()
3040 tun = tun_get(tfile); in __tun_chr_ioctl()
3069 tfile->ifindex = ifindex; in __tun_chr_ioctl()
3085 if (tfile->detached) in __tun_chr_ioctl()
3087 if (!tfile->socket.sk->sk_filter) in __tun_chr_ioctl()
3200 sndbuf = tfile->socket.sk->sk_sndbuf; in __tun_chr_ioctl()
3325 struct tun_file *tfile = file->private_data; in tun_chr_fasync() local
3334 if ((ret = fasync_helper(fd, file, on, &tfile->fasync)) < 0) in tun_chr_fasync()
3339 tfile->flags |= TUN_FASYNC; in tun_chr_fasync()
3341 tfile->flags &= ~TUN_FASYNC; in tun_chr_fasync()
3350 struct tun_file *tfile; in tun_chr_open() local
3352 tfile = (struct tun_file *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL, in tun_chr_open()
3354 if (!tfile) in tun_chr_open()
3356 if (ptr_ring_init(&tfile->tx_ring, 0, GFP_KERNEL)) { in tun_chr_open()
3357 sk_free(&tfile->sk); in tun_chr_open()
3361 mutex_init(&tfile->napi_mutex); in tun_chr_open()
3362 RCU_INIT_POINTER(tfile->tun, NULL); in tun_chr_open()
3363 tfile->flags = 0; in tun_chr_open()
3364 tfile->ifindex = 0; in tun_chr_open()
3366 init_waitqueue_head(&tfile->socket.wq.wait); in tun_chr_open()
3368 tfile->socket.file = file; in tun_chr_open()
3369 tfile->socket.ops = &tun_socket_ops; in tun_chr_open()
3371 sock_init_data_uid(&tfile->socket, &tfile->sk, current_fsuid()); in tun_chr_open()
3373 tfile->sk.sk_write_space = tun_sock_write_space; in tun_chr_open()
3374 tfile->sk.sk_sndbuf = INT_MAX; in tun_chr_open()
3376 file->private_data = tfile; in tun_chr_open()
3377 INIT_LIST_HEAD(&tfile->next); in tun_chr_open()
3379 sock_set_flag(&tfile->sk, SOCK_ZEROCOPY); in tun_chr_open()
3388 struct tun_file *tfile = file->private_data; in tun_chr_close() local
3390 tun_detach(tfile, true); in tun_chr_close()
3398 struct tun_file *tfile = file->private_data; in tun_chr_show_fdinfo() local
3405 tun = tun_get(tfile); in tun_chr_show_fdinfo()
3557 struct tun_file *tfile; in tun_queue_resize() local
3567 tfile = rtnl_dereference(tun->tfiles[i]); in tun_queue_resize()
3568 rings[i] = &tfile->tx_ring; in tun_queue_resize()
3570 list_for_each_entry(tfile, &tun->disabled, next) in tun_queue_resize()
3571 rings[i++] = &tfile->tx_ring; in tun_queue_resize()
3598 struct tun_file *tfile; in tun_device_event() local
3600 tfile = rtnl_dereference(tun->tfiles[i]); in tun_device_event()
3601 tfile->socket.sk->sk_write_space(tfile->socket.sk); in tun_device_event()
3662 struct tun_file *tfile; in tun_get_socket() local
3665 tfile = file->private_data; in tun_get_socket()
3666 if (!tfile) in tun_get_socket()
3668 return &tfile->socket; in tun_get_socket()
3674 struct tun_file *tfile; in tun_get_tx_ring() local
3678 tfile = file->private_data; in tun_get_tx_ring()
3679 if (!tfile) in tun_get_tx_ring()
3681 return &tfile->tx_ring; in tun_get_tx_ring()