Lines Matching refs:tfile
227 struct tun_file *tfile = container_of(napi, struct tun_file, napi); in tun_napi_receive() local
228 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_napi_receive()
265 static void tun_napi_init(struct tun_struct *tun, struct tun_file *tfile, in tun_napi_init() argument
268 tfile->napi_enabled = napi_en; in tun_napi_init()
269 tfile->napi_frags_enabled = napi_en && napi_frags; in tun_napi_init()
271 netif_napi_add_tx(tun->dev, &tfile->napi, tun_napi_poll); in tun_napi_init()
272 napi_enable(&tfile->napi); in tun_napi_init()
276 static void tun_napi_enable(struct tun_file *tfile) in tun_napi_enable() argument
278 if (tfile->napi_enabled) in tun_napi_enable()
279 napi_enable(&tfile->napi); in tun_napi_enable()
282 static void tun_napi_disable(struct tun_file *tfile) in tun_napi_disable() argument
284 if (tfile->napi_enabled) in tun_napi_disable()
285 napi_disable(&tfile->napi); in tun_napi_disable()
288 static void tun_napi_del(struct tun_file *tfile) in tun_napi_del() argument
290 if (tfile->napi_enabled) in tun_napi_del()
291 netif_napi_del(&tfile->napi); in tun_napi_del()
294 static bool tun_napi_frags_enabled(const struct tun_file *tfile) in tun_napi_frags_enabled() argument
296 return tfile->napi_frags_enabled; in tun_napi_frags_enabled()
474 struct tun_file *tfile) in tun_flow_update() argument
479 u16 queue_index = tfile->queue_index; in tun_flow_update()
593 static void tun_disable_queue(struct tun_struct *tun, struct tun_file *tfile) in tun_disable_queue() argument
595 tfile->detached = tun; in tun_disable_queue()
596 list_add_tail(&tfile->next, &tun->disabled); in tun_disable_queue()
600 static struct tun_struct *tun_enable_queue(struct tun_file *tfile) in tun_enable_queue() argument
602 struct tun_struct *tun = tfile->detached; in tun_enable_queue()
604 tfile->detached = NULL; in tun_enable_queue()
605 list_del_init(&tfile->next); in tun_enable_queue()
624 static void tun_queue_purge(struct tun_file *tfile) in tun_queue_purge() argument
628 while ((ptr = ptr_ring_consume(&tfile->tx_ring)) != NULL) in tun_queue_purge()
631 skb_queue_purge(&tfile->sk.sk_write_queue); in tun_queue_purge()
632 skb_queue_purge(&tfile->sk.sk_error_queue); in tun_queue_purge()
635 static void __tun_detach(struct tun_file *tfile, bool clean) in __tun_detach() argument
640 tun = rtnl_dereference(tfile->tun); in __tun_detach()
643 if (!tfile->detached) in __tun_detach()
644 tun_napi_disable(tfile); in __tun_detach()
645 tun_napi_del(tfile); in __tun_detach()
648 if (tun && !tfile->detached) { in __tun_detach()
649 u16 index = tfile->queue_index; in __tun_detach()
661 RCU_INIT_POINTER(tfile->tun, NULL); in __tun_detach()
662 sock_put(&tfile->sk); in __tun_detach()
664 tun_disable_queue(tun, tfile); in __tun_detach()
665 tun_napi_disable(tfile); in __tun_detach()
671 tun_queue_purge(tfile); in __tun_detach()
673 } else if (tfile->detached && clean) { in __tun_detach()
674 tun = tun_enable_queue(tfile); in __tun_detach()
675 sock_put(&tfile->sk); in __tun_detach()
687 xdp_rxq_info_unreg(&tfile->xdp_rxq); in __tun_detach()
688 ptr_ring_cleanup(&tfile->tx_ring, tun_ptr_free); in __tun_detach()
692 static void tun_detach(struct tun_file *tfile, bool clean) in tun_detach() argument
698 tun = rtnl_dereference(tfile->tun); in tun_detach()
700 __tun_detach(tfile, clean); in tun_detach()
706 sock_put(&tfile->sk); in tun_detach()
712 struct tun_file *tfile, *tmp; in tun_detach_all() local
716 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_all()
717 BUG_ON(!tfile); in tun_detach_all()
718 tun_napi_disable(tfile); in tun_detach_all()
719 tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN; in tun_detach_all()
720 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_detach_all()
721 RCU_INIT_POINTER(tfile->tun, NULL); in tun_detach_all()
724 list_for_each_entry(tfile, &tun->disabled, next) { in tun_detach_all()
725 tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN; in tun_detach_all()
726 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_detach_all()
727 RCU_INIT_POINTER(tfile->tun, NULL); in tun_detach_all()
733 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_all()
734 tun_napi_del(tfile); in tun_detach_all()
736 tun_queue_purge(tfile); in tun_detach_all()
737 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_detach_all()
738 sock_put(&tfile->sk); in tun_detach_all()
740 list_for_each_entry_safe(tfile, tmp, &tun->disabled, next) { in tun_detach_all()
741 tun_napi_del(tfile); in tun_detach_all()
742 tun_enable_queue(tfile); in tun_detach_all()
743 tun_queue_purge(tfile); in tun_detach_all()
744 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_detach_all()
745 sock_put(&tfile->sk); in tun_detach_all()
757 struct tun_file *tfile = file->private_data; in tun_attach() local
761 err = security_tun_dev_attach(tfile->socket.sk, tun->security); in tun_attach()
766 if (rtnl_dereference(tfile->tun) && !tfile->detached) in tun_attach()
774 if (!tfile->detached && in tun_attach()
782 lock_sock(tfile->socket.sk); in tun_attach()
783 err = sk_attach_filter(&tun->fprog, tfile->socket.sk); in tun_attach()
784 release_sock(tfile->socket.sk); in tun_attach()
789 if (!tfile->detached && in tun_attach()
790 ptr_ring_resize(&tfile->tx_ring, dev->tx_queue_len, in tun_attach()
796 tfile->queue_index = tun->numqueues; in tun_attach()
797 tfile->socket.sk->sk_shutdown &= ~RCV_SHUTDOWN; in tun_attach()
799 if (tfile->detached) { in tun_attach()
801 WARN_ON(!xdp_rxq_info_is_reg(&tfile->xdp_rxq)); in tun_attach()
803 if (tfile->xdp_rxq.queue_index != tfile->queue_index) in tun_attach()
804 tfile->xdp_rxq.queue_index = tfile->queue_index; in tun_attach()
807 err = xdp_rxq_info_reg(&tfile->xdp_rxq, in tun_attach()
808 tun->dev, tfile->queue_index, 0); in tun_attach()
811 err = xdp_rxq_info_reg_mem_model(&tfile->xdp_rxq, in tun_attach()
814 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_attach()
820 if (tfile->detached) { in tun_attach()
821 tun_enable_queue(tfile); in tun_attach()
822 tun_napi_enable(tfile); in tun_attach()
824 sock_hold(&tfile->sk); in tun_attach()
825 tun_napi_init(tun, tfile, napi, napi_frags); in tun_attach()
829 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_attach()
840 rcu_assign_pointer(tfile->tun, tun); in tun_attach()
841 rcu_assign_pointer(tun->tfiles[tun->numqueues], tfile); in tun_attach()
848 static struct tun_struct *tun_get(struct tun_file *tfile) in tun_get() argument
853 tun = rcu_dereference(tfile->tun); in tun_get()
1076 struct tun_file *tfile; in tun_net_xmit() local
1080 tfile = rcu_dereference(tun->tfiles[txq]); in tun_net_xmit()
1083 if (!tfile) { in tun_net_xmit()
1101 if (tfile->socket.sk->sk_filter && in tun_net_xmit()
1102 sk_filter(tfile->socket.sk, skb)) { in tun_net_xmit()
1132 if (ptr_ring_produce(&tfile->tx_ring, skb)) { in tun_net_xmit()
1142 if (tfile->flags & TUN_FASYNC) in tun_net_xmit()
1143 kill_fasync(&tfile->fasync, SIGIO, POLL_IN); in tun_net_xmit()
1144 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_net_xmit()
1199 struct tun_file *tfile; in tun_xdp_set() local
1209 tfile = rtnl_dereference(tun->tfiles[i]); in tun_xdp_set()
1211 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1213 sock_reset_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1215 list_for_each_entry(tfile, &tun->disabled, next) { in tun_xdp_set()
1217 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1219 sock_reset_flag(&tfile->sk, SOCK_XDP); in tun_xdp_set()
1263 static void __tun_xdp_flush_tfile(struct tun_file *tfile) in __tun_xdp_flush_tfile() argument
1266 if (tfile->flags & TUN_FASYNC) in __tun_xdp_flush_tfile()
1267 kill_fasync(&tfile->fasync, SIGIO, POLL_IN); in __tun_xdp_flush_tfile()
1268 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in __tun_xdp_flush_tfile()
1275 struct tun_file *tfile; in tun_xdp_xmit() local
1292 tfile = rcu_dereference(tun->tfiles[smp_processor_id() % in tun_xdp_xmit()
1294 if (unlikely(!tfile)) in tun_xdp_xmit()
1297 spin_lock(&tfile->tx_ring.producer_lock); in tun_xdp_xmit()
1305 if (__ptr_ring_produce(&tfile->tx_ring, frame)) { in tun_xdp_xmit()
1311 spin_unlock(&tfile->tx_ring.producer_lock); in tun_xdp_xmit()
1314 __tun_xdp_flush_tfile(tfile); in tun_xdp_xmit()
1416 static bool tun_sock_writeable(struct tun_struct *tun, struct tun_file *tfile) in tun_sock_writeable() argument
1418 struct sock *sk = tfile->socket.sk; in tun_sock_writeable()
1428 struct tun_file *tfile = file->private_data; in tun_chr_poll() local
1429 struct tun_struct *tun = tun_get(tfile); in tun_chr_poll()
1436 sk = tfile->socket.sk; in tun_chr_poll()
1440 if (!ptr_ring_empty(&tfile->tx_ring)) in tun_chr_poll()
1448 if (tun_sock_writeable(tun, tfile) || in tun_chr_poll()
1450 tun_sock_writeable(tun, tfile))) in tun_chr_poll()
1460 static struct sk_buff *tun_napi_alloc_frags(struct tun_file *tfile, in tun_napi_alloc_frags() argument
1474 skb = napi_get_frags(&tfile->napi); in tun_napi_alloc_frags()
1511 napi_free_frags(&tfile->napi); in tun_napi_alloc_frags()
1517 static struct sk_buff *tun_alloc_skb(struct tun_file *tfile, in tun_alloc_skb() argument
1521 struct sock *sk = tfile->socket.sk; in tun_alloc_skb()
1544 static void tun_rx_batched(struct tun_struct *tun, struct tun_file *tfile, in tun_rx_batched() argument
1547 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_rx_batched()
1554 skb_record_rx_queue(skb, tfile->queue_index); in tun_rx_batched()
1575 skb_record_rx_queue(nskb, tfile->queue_index); in tun_rx_batched()
1578 skb_record_rx_queue(skb, tfile->queue_index); in tun_rx_batched()
1584 static bool tun_can_build_skb(struct tun_struct *tun, struct tun_file *tfile, in tun_can_build_skb() argument
1590 if (tfile->socket.sk->sk_sndbuf != INT_MAX) in tun_can_build_skb()
1606 static struct sk_buff *__tun_build_skb(struct tun_file *tfile, in __tun_build_skb() argument
1617 skb_set_owner_w(skb, tfile->socket.sk); in __tun_build_skb()
1658 struct tun_file *tfile, in tun_build_skb() argument
1695 return __tun_build_skb(tfile, alloc_frag, buf, buflen, len, in tun_build_skb()
1708 xdp_init_buff(&xdp, buflen, &tfile->xdp_rxq); in tun_build_skb()
1734 return __tun_build_skb(tfile, alloc_frag, buf, buflen, len, pad); in tun_build_skb()
1743 static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, in tun_get_user() argument
1758 bool frags = tun_napi_frags_enabled(tfile); in tun_get_user()
1814 if (!frags && tun_can_build_skb(tun, tfile, len, noblock, zerocopy)) { in tun_get_user()
1819 skb = tun_build_skb(tun, tfile, from, &gso, len, &skb_xdp); in tun_get_user()
1835 mutex_lock(&tfile->napi_mutex); in tun_get_user()
1836 skb = tun_napi_alloc_frags(tfile, copylen, from); in tun_get_user()
1846 skb = tun_alloc_skb(tfile, align, copylen, linear, in tun_get_user()
1914 skb_record_rx_queue(skb, tfile->queue_index); in tun_get_user()
1940 !tfile->detached) in tun_get_user()
1964 napi_free_frags(&tfile->napi); in tun_get_user()
1966 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1970 if (likely(napi_schedule_prep(&tfile->napi))) { in tun_get_user()
1972 napi_gro_frags(&tfile->napi); in tun_get_user()
1973 napi_complete(&tfile->napi); in tun_get_user()
1979 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1980 } else if (tfile->napi_enabled) { in tun_get_user()
1981 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_get_user()
1986 if (unlikely(tfile->detached)) { in tun_get_user()
1998 napi_schedule(&tfile->napi); in tun_get_user()
2002 tun_rx_batched(tun, tfile, skb, more); in tun_get_user()
2013 tun_flow_update(tun, rxhash, tfile); in tun_get_user()
2027 tfile->napi.skb = NULL; in tun_get_user()
2028 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
2037 struct tun_file *tfile = file->private_data; in tun_chr_write_iter() local
2038 struct tun_struct *tun = tun_get(tfile); in tun_chr_write_iter()
2048 result = tun_get_user(tun, tfile, NULL, from, noblock, false); in tun_chr_write_iter()
2055 struct tun_file *tfile, in tun_put_user_xdp() argument
2086 struct tun_file *tfile, in tun_put_user() argument
2175 static void *tun_ring_recv(struct tun_file *tfile, int noblock, int *err) in tun_ring_recv() argument
2181 ptr = ptr_ring_consume(&tfile->tx_ring); in tun_ring_recv()
2189 add_wait_queue(&tfile->socket.wq.wait, &wait); in tun_ring_recv()
2193 ptr = ptr_ring_consume(&tfile->tx_ring); in tun_ring_recv()
2200 if (tfile->socket.sk->sk_shutdown & RCV_SHUTDOWN) { in tun_ring_recv()
2209 remove_wait_queue(&tfile->socket.wq.wait, &wait); in tun_ring_recv()
2216 static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile, in tun_do_read() argument
2230 ptr = tun_ring_recv(tfile, noblock, &err); in tun_do_read()
2238 ret = tun_put_user_xdp(tun, tfile, xdpf, to); in tun_do_read()
2243 ret = tun_put_user(tun, tfile, skb, to); in tun_do_read()
2256 struct tun_file *tfile = file->private_data; in tun_chr_read_iter() local
2257 struct tun_struct *tun = tun_get(tfile); in tun_chr_read_iter()
2267 ret = tun_do_read(tun, tfile, to, noblock, NULL); in tun_chr_read_iter()
2412 struct tun_file *tfile; in tun_sock_write_space() local
2426 tfile = container_of(sk, struct tun_file, sk); in tun_sock_write_space()
2427 kill_fasync(&tfile->fasync, SIGIO, POLL_OUT); in tun_sock_write_space()
2437 struct tun_file *tfile, in tun_xdp_one() argument
2460 xdp_init_buff(xdp, buflen, &tfile->xdp_rxq); in tun_xdp_one()
2511 skb_record_rx_queue(skb, tfile->queue_index); in tun_xdp_one()
2522 !tfile->detached) in tun_xdp_one()
2525 if (tfile->napi_enabled) { in tun_xdp_one()
2526 queue = &tfile->sk.sk_write_queue; in tun_xdp_one()
2529 if (unlikely(tfile->detached)) { in tun_xdp_one()
2549 tun_flow_update(tun, rxhash, tfile); in tun_xdp_one()
2558 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_sendmsg() local
2559 struct tun_struct *tun = tun_get(tfile); in tun_sendmsg()
2579 ret = tun_xdp_one(tun, tfile, xdp, &flush, &tpage); in tun_sendmsg()
2587 if (tfile->napi_enabled && queued > 0) in tun_sendmsg()
2588 napi_schedule(&tfile->napi); in tun_sendmsg()
2599 ret = tun_get_user(tun, tfile, ctl ? ctl->ptr : NULL, &m->msg_iter, in tun_sendmsg()
2610 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_recvmsg() local
2611 struct tun_struct *tun = tun_get(tfile); in tun_recvmsg()
2629 ret = tun_do_read(tun, tfile, &m->msg_iter, flags & MSG_DONTWAIT, ptr); in tun_recvmsg()
2661 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_peek_len() local
2665 tun = tun_get(tfile); in tun_peek_len()
2669 ret = PTR_RING_PEEK_CALL(&tfile->tx_ring, tun_ptr_peek_len); in tun_peek_len()
2738 struct tun_file *tfile = file->private_data; in tun_set_iff() local
2742 if (tfile->detached) in tun_set_iff()
2830 dev->ifindex = tfile->ifindex; in tun_set_iff()
2841 tun->sndbuf = tfile->socket.sk->sk_sndbuf; in tun_set_iff()
2858 rcu_assign_pointer(tfile->tun, tun); in tun_set_iff()
2931 struct tun_file *tfile; in tun_detach_filter() local
2934 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_filter()
2935 lock_sock(tfile->socket.sk); in tun_detach_filter()
2936 sk_detach_filter(tfile->socket.sk); in tun_detach_filter()
2937 release_sock(tfile->socket.sk); in tun_detach_filter()
2946 struct tun_file *tfile; in tun_attach_filter() local
2949 tfile = rtnl_dereference(tun->tfiles[i]); in tun_attach_filter()
2950 lock_sock(tfile->socket.sk); in tun_attach_filter()
2951 ret = sk_attach_filter(&tun->fprog, tfile->socket.sk); in tun_attach_filter()
2952 release_sock(tfile->socket.sk); in tun_attach_filter()
2965 struct tun_file *tfile; in tun_set_sndbuf() local
2969 tfile = rtnl_dereference(tun->tfiles[i]); in tun_set_sndbuf()
2970 tfile->socket.sk->sk_sndbuf = tun->sndbuf; in tun_set_sndbuf()
2976 struct tun_file *tfile = file->private_data; in tun_set_queue() local
2983 tun = tfile->detached; in tun_set_queue()
2994 tun = rtnl_dereference(tfile->tun); in tun_set_queue()
2995 if (!tun || !(tun->flags & IFF_MULTI_QUEUE) || tfile->detached) in tun_set_queue()
2998 __tun_detach(tfile, false); in tun_set_queue()
3072 struct tun_file *tfile = file->private_data; in __tun_chr_ioctl() local
3073 struct net *net = sock_net(&tfile->sk); in __tun_chr_ioctl()
3111 tun = tun_get(tfile); in __tun_chr_ioctl()
3140 tfile->ifindex = ifindex; in __tun_chr_ioctl()
3156 if (tfile->detached) in __tun_chr_ioctl()
3158 if (!tfile->socket.sk->sk_filter) in __tun_chr_ioctl()
3271 sndbuf = tfile->socket.sk->sk_sndbuf; in __tun_chr_ioctl()
3440 struct tun_file *tfile = file->private_data; in tun_chr_fasync() local
3443 if ((ret = fasync_helper(fd, file, on, &tfile->fasync)) < 0) in tun_chr_fasync()
3448 tfile->flags |= TUN_FASYNC; in tun_chr_fasync()
3450 tfile->flags &= ~TUN_FASYNC; in tun_chr_fasync()
3459 struct tun_file *tfile; in tun_chr_open() local
3461 tfile = (struct tun_file *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL, in tun_chr_open()
3463 if (!tfile) in tun_chr_open()
3465 if (ptr_ring_init(&tfile->tx_ring, 0, GFP_KERNEL)) { in tun_chr_open()
3466 sk_free(&tfile->sk); in tun_chr_open()
3470 mutex_init(&tfile->napi_mutex); in tun_chr_open()
3471 RCU_INIT_POINTER(tfile->tun, NULL); in tun_chr_open()
3472 tfile->flags = 0; in tun_chr_open()
3473 tfile->ifindex = 0; in tun_chr_open()
3475 init_waitqueue_head(&tfile->socket.wq.wait); in tun_chr_open()
3477 tfile->socket.file = file; in tun_chr_open()
3478 tfile->socket.ops = &tun_socket_ops; in tun_chr_open()
3480 sock_init_data_uid(&tfile->socket, &tfile->sk, current_fsuid()); in tun_chr_open()
3482 tfile->sk.sk_write_space = tun_sock_write_space; in tun_chr_open()
3483 tfile->sk.sk_sndbuf = INT_MAX; in tun_chr_open()
3485 file->private_data = tfile; in tun_chr_open()
3486 INIT_LIST_HEAD(&tfile->next); in tun_chr_open()
3488 sock_set_flag(&tfile->sk, SOCK_ZEROCOPY); in tun_chr_open()
3497 struct tun_file *tfile = file->private_data; in tun_chr_close() local
3499 tun_detach(tfile, true); in tun_chr_close()
3507 struct tun_file *tfile = file->private_data; in tun_chr_show_fdinfo() local
3514 tun = tun_get(tfile); in tun_chr_show_fdinfo()
3657 struct tun_file *tfile; in tun_queue_resize() local
3667 tfile = rtnl_dereference(tun->tfiles[i]); in tun_queue_resize()
3668 rings[i] = &tfile->tx_ring; in tun_queue_resize()
3670 list_for_each_entry(tfile, &tun->disabled, next) in tun_queue_resize()
3671 rings[i++] = &tfile->tx_ring; in tun_queue_resize()
3698 struct tun_file *tfile; in tun_device_event() local
3700 tfile = rtnl_dereference(tun->tfiles[i]); in tun_device_event()
3701 tfile->socket.sk->sk_write_space(tfile->socket.sk); in tun_device_event()
3762 struct tun_file *tfile; in tun_get_socket() local
3765 tfile = file->private_data; in tun_get_socket()
3766 if (!tfile) in tun_get_socket()
3768 return &tfile->socket; in tun_get_socket()
3774 struct tun_file *tfile; in tun_get_tx_ring() local
3778 tfile = file->private_data; in tun_get_tx_ring()
3779 if (!tfile) in tun_get_tx_ring()
3781 return &tfile->tx_ring; in tun_get_tx_ring()