Lines Matching refs:tfile
229 struct tun_file *tfile = container_of(napi, struct tun_file, napi); in tun_napi_receive() local
230 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_napi_receive()
267 static void tun_napi_init(struct tun_struct *tun, struct tun_file *tfile, in tun_napi_init() argument
270 tfile->napi_enabled = napi_en; in tun_napi_init()
271 tfile->napi_frags_enabled = napi_en && napi_frags; in tun_napi_init()
273 netif_napi_add_tx(tun->dev, &tfile->napi, tun_napi_poll); in tun_napi_init()
274 napi_enable(&tfile->napi); in tun_napi_init()
278 static void tun_napi_enable(struct tun_file *tfile) in tun_napi_enable() argument
280 if (tfile->napi_enabled) in tun_napi_enable()
281 napi_enable(&tfile->napi); in tun_napi_enable()
284 static void tun_napi_disable(struct tun_file *tfile) in tun_napi_disable() argument
286 if (tfile->napi_enabled) in tun_napi_disable()
287 napi_disable(&tfile->napi); in tun_napi_disable()
290 static void tun_napi_del(struct tun_file *tfile) in tun_napi_del() argument
292 if (tfile->napi_enabled) in tun_napi_del()
293 netif_napi_del(&tfile->napi); in tun_napi_del()
296 static bool tun_napi_frags_enabled(const struct tun_file *tfile) in tun_napi_frags_enabled() argument
298 return tfile->napi_frags_enabled; in tun_napi_frags_enabled()
412 struct tun_file *tfile) in tun_flow_update() argument
417 u16 queue_index = tfile->queue_index; in tun_flow_update()
529 static void tun_disable_queue(struct tun_struct *tun, struct tun_file *tfile) in tun_disable_queue() argument
531 tfile->detached = tun; in tun_disable_queue()
532 list_add_tail(&tfile->next, &tun->disabled); in tun_disable_queue()
536 static struct tun_struct *tun_enable_queue(struct tun_file *tfile) in tun_enable_queue() argument
538 struct tun_struct *tun = tfile->detached; in tun_enable_queue()
540 tfile->detached = NULL; in tun_enable_queue()
541 list_del_init(&tfile->next); in tun_enable_queue()
560 static void tun_queue_purge(struct tun_file *tfile) in tun_queue_purge() argument
564 while ((ptr = ptr_ring_consume(&tfile->tx_ring)) != NULL) in tun_queue_purge()
567 skb_queue_purge(&tfile->sk.sk_write_queue); in tun_queue_purge()
568 skb_queue_purge(&tfile->sk.sk_error_queue); in tun_queue_purge()
571 static void __tun_detach(struct tun_file *tfile, bool clean) in __tun_detach() argument
576 tun = rtnl_dereference(tfile->tun); in __tun_detach()
579 if (!tfile->detached) in __tun_detach()
580 tun_napi_disable(tfile); in __tun_detach()
581 tun_napi_del(tfile); in __tun_detach()
584 if (tun && !tfile->detached) { in __tun_detach()
585 u16 index = tfile->queue_index; in __tun_detach()
598 RCU_INIT_POINTER(tfile->tun, NULL); in __tun_detach()
599 sock_put(&tfile->sk); in __tun_detach()
601 tun_disable_queue(tun, tfile); in __tun_detach()
602 tun_napi_disable(tfile); in __tun_detach()
608 tun_queue_purge(tfile); in __tun_detach()
610 } else if (tfile->detached && clean) { in __tun_detach()
611 tun = tun_enable_queue(tfile); in __tun_detach()
612 sock_put(&tfile->sk); in __tun_detach()
624 xdp_rxq_info_unreg(&tfile->xdp_rxq); in __tun_detach()
625 ptr_ring_cleanup(&tfile->tx_ring, tun_ptr_free); in __tun_detach()
629 static void tun_detach(struct tun_file *tfile, bool clean) in tun_detach() argument
635 tun = rtnl_dereference(tfile->tun); in tun_detach()
637 __tun_detach(tfile, clean); in tun_detach()
643 sock_put(&tfile->sk); in tun_detach()
649 struct tun_file *tfile, *tmp; in tun_detach_all() local
653 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_all()
654 BUG_ON(!tfile); in tun_detach_all()
655 tun_napi_disable(tfile); in tun_detach_all()
656 tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN; in tun_detach_all()
657 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_detach_all()
658 RCU_INIT_POINTER(tfile->tun, NULL); in tun_detach_all()
661 list_for_each_entry(tfile, &tun->disabled, next) { in tun_detach_all()
662 tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN; in tun_detach_all()
663 tfile->socket.sk->sk_data_ready(tfile->socket.sk); in tun_detach_all()
664 RCU_INIT_POINTER(tfile->tun, NULL); in tun_detach_all()
670 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_all()
671 tun_napi_del(tfile); in tun_detach_all()
673 tun_queue_purge(tfile); in tun_detach_all()
674 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_detach_all()
675 sock_put(&tfile->sk); in tun_detach_all()
677 list_for_each_entry_safe(tfile, tmp, &tun->disabled, next) { in tun_detach_all()
678 tun_napi_del(tfile); in tun_detach_all()
679 tun_enable_queue(tfile); in tun_detach_all()
680 tun_queue_purge(tfile); in tun_detach_all()
681 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_detach_all()
682 sock_put(&tfile->sk); in tun_detach_all()
694 struct tun_file *tfile = file->private_data; in tun_attach() local
698 err = security_tun_dev_attach(tfile->socket.sk, tun->security); in tun_attach()
703 if (rtnl_dereference(tfile->tun) && !tfile->detached) in tun_attach()
711 if (!tfile->detached && in tun_attach()
719 lock_sock(tfile->socket.sk); in tun_attach()
720 err = sk_attach_filter(&tun->fprog, tfile->socket.sk); in tun_attach()
721 release_sock(tfile->socket.sk); in tun_attach()
726 if (!tfile->detached && in tun_attach()
727 ptr_ring_resize(&tfile->tx_ring, dev->tx_queue_len, in tun_attach()
733 tfile->queue_index = tun->numqueues; in tun_attach()
734 tfile->socket.sk->sk_shutdown &= ~RCV_SHUTDOWN; in tun_attach()
736 if (tfile->detached) { in tun_attach()
738 WARN_ON(!xdp_rxq_info_is_reg(&tfile->xdp_rxq)); in tun_attach()
740 if (tfile->xdp_rxq.queue_index != tfile->queue_index) in tun_attach()
741 tfile->xdp_rxq.queue_index = tfile->queue_index; in tun_attach()
744 err = xdp_rxq_info_reg(&tfile->xdp_rxq, in tun_attach()
745 tun->dev, tfile->queue_index, 0); in tun_attach()
748 err = xdp_rxq_info_reg_mem_model(&tfile->xdp_rxq, in tun_attach()
751 xdp_rxq_info_unreg(&tfile->xdp_rxq); in tun_attach()
757 if (tfile->detached) { in tun_attach()
758 tun_enable_queue(tfile); in tun_attach()
759 tun_napi_enable(tfile); in tun_attach()
761 sock_hold(&tfile->sk); in tun_attach()
762 tun_napi_init(tun, tfile, napi, napi_frags); in tun_attach()
766 sock_set_flag(&tfile->sk, SOCK_XDP); in tun_attach()
777 rcu_assign_pointer(tfile->tun, tun); in tun_attach()
778 rcu_assign_pointer(tun->tfiles[tun->numqueues], tfile); in tun_attach()
785 static struct tun_struct *tun_get(struct tun_file *tfile) in tun_get() argument
790 tun = rcu_dereference(tfile->tun); in tun_get()
1009 struct tun_file *tfile; in tun_net_xmit() local
1013 tfile = rcu_dereference(tun->tfiles[txq]); in tun_net_xmit()
1016 if (!tfile) { in tun_net_xmit()
1034 if (tfile->socket.sk->sk_filter && in tun_net_xmit()
1035 sk_filter_reason(tfile->socket.sk, skb, &drop_reason)) 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
1710 bool frags = tun_napi_frags_enabled(tfile); in tun_get_user()
1765 if (!frags && tun_can_build_skb(tun, tfile, len, noblock, zerocopy)) { in tun_get_user()
1770 skb = tun_build_skb(tun, tfile, from, gso, len, &skb_xdp); in tun_get_user()
1783 mutex_lock(&tfile->napi_mutex); in tun_get_user()
1784 skb = tun_napi_alloc_frags(tfile, copylen, from); in tun_get_user()
1794 skb = tun_alloc_skb(tfile, align, copylen, linear, in tun_get_user()
1862 skb_record_rx_queue(skb, tfile->queue_index); in tun_get_user()
1888 !tfile->detached) in tun_get_user()
1912 napi_free_frags(&tfile->napi); in tun_get_user()
1914 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1918 if (likely(napi_schedule_prep(&tfile->napi))) { in tun_get_user()
1920 napi_gro_frags(&tfile->napi); in tun_get_user()
1921 napi_complete(&tfile->napi); in tun_get_user()
1927 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1928 } else if (tfile->napi_enabled) { in tun_get_user()
1929 struct sk_buff_head *queue = &tfile->sk.sk_write_queue; in tun_get_user()
1934 if (unlikely(tfile->detached)) { in tun_get_user()
1946 napi_schedule(&tfile->napi); in tun_get_user()
1950 tun_rx_batched(tun, tfile, skb, more); in tun_get_user()
1961 tun_flow_update(tun, rxhash, tfile); in tun_get_user()
1975 tfile->napi.skb = NULL; in tun_get_user()
1976 mutex_unlock(&tfile->napi_mutex); in tun_get_user()
1985 struct tun_file *tfile = file->private_data; in tun_chr_write_iter() local
1986 struct tun_struct *tun = tun_get(tfile); in tun_chr_write_iter()
1996 result = tun_get_user(tun, tfile, NULL, from, noblock, false); in tun_chr_write_iter()
2003 struct tun_file *tfile, in tun_put_user_xdp() argument
2031 struct tun_file *tfile, in tun_put_user() argument
2113 static void *tun_ring_recv(struct tun_file *tfile, int noblock, int *err) in tun_ring_recv() argument
2119 ptr = ptr_ring_consume(&tfile->tx_ring); in tun_ring_recv()
2127 add_wait_queue(&tfile->socket.wq.wait, &wait); in tun_ring_recv()
2131 ptr = ptr_ring_consume(&tfile->tx_ring); in tun_ring_recv()
2138 if (tfile->socket.sk->sk_shutdown & RCV_SHUTDOWN) { in tun_ring_recv()
2147 remove_wait_queue(&tfile->socket.wq.wait, &wait); in tun_ring_recv()
2154 static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile, in tun_do_read() argument
2168 ptr = tun_ring_recv(tfile, noblock, &err); in tun_do_read()
2176 ret = tun_put_user_xdp(tun, tfile, xdpf, to); in tun_do_read()
2181 ret = tun_put_user(tun, tfile, skb, to); in tun_do_read()
2194 struct tun_file *tfile = file->private_data; in tun_chr_read_iter() local
2195 struct tun_struct *tun = tun_get(tfile); in tun_chr_read_iter()
2205 ret = tun_do_read(tun, tfile, to, noblock, NULL); in tun_chr_read_iter()
2349 struct tun_file *tfile; in tun_sock_write_space() local
2363 tfile = container_of(sk, struct tun_file, sk); in tun_sock_write_space()
2364 kill_fasync(&tfile->fasync, SIGIO, POLL_OUT); in tun_sock_write_space()
2374 struct tun_file *tfile, in tun_xdp_one() argument
2402 xdp_init_buff(xdp, buflen, &tfile->xdp_rxq); in tun_xdp_one()
2462 skb_record_rx_queue(skb, tfile->queue_index); in tun_xdp_one()
2473 !tfile->detached) in tun_xdp_one()
2476 if (tfile->napi_enabled) { in tun_xdp_one()
2477 queue = &tfile->sk.sk_write_queue; in tun_xdp_one()
2480 if (unlikely(tfile->detached)) { in tun_xdp_one()
2500 tun_flow_update(tun, rxhash, tfile); in tun_xdp_one()
2509 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_sendmsg() local
2510 struct tun_struct *tun = tun_get(tfile); in tun_sendmsg()
2532 ret = tun_xdp_one(tun, tfile, xdp, &flush, &tpage); in tun_sendmsg()
2540 if (tfile->napi_enabled && queued > 0) in tun_sendmsg()
2541 napi_schedule(&tfile->napi); in tun_sendmsg()
2553 ret = tun_get_user(tun, tfile, ctl ? ctl->ptr : NULL, &m->msg_iter, in tun_sendmsg()
2564 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_recvmsg() local
2565 struct tun_struct *tun = tun_get(tfile); in tun_recvmsg()
2583 ret = tun_do_read(tun, tfile, &m->msg_iter, flags & MSG_DONTWAIT, ptr); in tun_recvmsg()
2615 struct tun_file *tfile = container_of(sock, struct tun_file, socket); in tun_peek_len() local
2619 tun = tun_get(tfile); in tun_peek_len()
2623 ret = PTR_RING_PEEK_CALL(&tfile->tx_ring, tun_ptr_peek_len); in tun_peek_len()
2692 struct tun_file *tfile = file->private_data; in tun_set_iff() local
2696 if (tfile->detached) in tun_set_iff()
2784 dev->ifindex = tfile->ifindex; in tun_set_iff()
2795 tun->sndbuf = tfile->socket.sk->sk_sndbuf; in tun_set_iff()
2812 rcu_assign_pointer(tfile->tun, tun); in tun_set_iff()
2899 struct tun_file *tfile; in tun_detach_filter() local
2902 tfile = rtnl_dereference(tun->tfiles[i]); in tun_detach_filter()
2903 lock_sock(tfile->socket.sk); in tun_detach_filter()
2904 sk_detach_filter(tfile->socket.sk); in tun_detach_filter()
2905 release_sock(tfile->socket.sk); in tun_detach_filter()
2914 struct tun_file *tfile; in tun_attach_filter() local
2917 tfile = rtnl_dereference(tun->tfiles[i]); in tun_attach_filter()
2918 lock_sock(tfile->socket.sk); in tun_attach_filter()
2919 ret = sk_attach_filter(&tun->fprog, tfile->socket.sk); in tun_attach_filter()
2920 release_sock(tfile->socket.sk); in tun_attach_filter()
2933 struct tun_file *tfile; in tun_set_sndbuf() local
2937 tfile = rtnl_dereference(tun->tfiles[i]); in tun_set_sndbuf()
2938 tfile->socket.sk->sk_sndbuf = tun->sndbuf; in tun_set_sndbuf()
2944 struct tun_file *tfile = file->private_data; in tun_set_queue() local
2951 tun = tfile->detached; in tun_set_queue()
2962 tun = rtnl_dereference(tfile->tun); in tun_set_queue()
2963 if (!tun || !(tun->flags & IFF_MULTI_QUEUE) || tfile->detached) in tun_set_queue()
2966 __tun_detach(tfile, false); in tun_set_queue()
3040 struct tun_file *tfile = file->private_data; in __tun_chr_ioctl() local
3041 struct net *net = sock_net(&tfile->sk); in __tun_chr_ioctl()
3077 tun = tun_get(tfile); in __tun_chr_ioctl()
3106 tfile->ifindex = ifindex; in __tun_chr_ioctl()
3122 if (tfile->detached) in __tun_chr_ioctl()
3124 if (!tfile->socket.sk->sk_filter) in __tun_chr_ioctl()
3243 sndbuf = tfile->socket.sk->sk_sndbuf; in __tun_chr_ioctl()
3368 struct tun_file *tfile = file->private_data; in tun_chr_fasync() local
3377 if ((ret = fasync_helper(fd, file, on, &tfile->fasync)) < 0) in tun_chr_fasync()
3382 tfile->flags |= TUN_FASYNC; in tun_chr_fasync()
3384 tfile->flags &= ~TUN_FASYNC; in tun_chr_fasync()
3393 struct tun_file *tfile; in tun_chr_open() local
3395 tfile = (struct tun_file *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL, in tun_chr_open()
3397 if (!tfile) in tun_chr_open()
3399 if (ptr_ring_init(&tfile->tx_ring, 0, GFP_KERNEL)) { in tun_chr_open()
3400 sk_free(&tfile->sk); in tun_chr_open()
3404 mutex_init(&tfile->napi_mutex); in tun_chr_open()
3405 RCU_INIT_POINTER(tfile->tun, NULL); in tun_chr_open()
3406 tfile->flags = 0; in tun_chr_open()
3407 tfile->ifindex = 0; in tun_chr_open()
3409 init_waitqueue_head(&tfile->socket.wq.wait); in tun_chr_open()
3411 tfile->socket.file = file; in tun_chr_open()
3412 tfile->socket.ops = &tun_socket_ops; in tun_chr_open()
3414 sock_init_data_uid(&tfile->socket, &tfile->sk, current_fsuid()); in tun_chr_open()
3416 tfile->sk.sk_write_space = tun_sock_write_space; in tun_chr_open()
3417 tfile->sk.sk_sndbuf = INT_MAX; in tun_chr_open()
3419 file->private_data = tfile; in tun_chr_open()
3420 INIT_LIST_HEAD(&tfile->next); in tun_chr_open()
3422 sock_set_flag(&tfile->sk, SOCK_ZEROCOPY); in tun_chr_open()
3431 struct tun_file *tfile = file->private_data; in tun_chr_close() local
3433 tun_detach(tfile, true); in tun_chr_close()
3441 struct tun_file *tfile = file->private_data; in tun_chr_show_fdinfo() local
3448 tun = tun_get(tfile); in tun_chr_show_fdinfo()
3600 struct tun_file *tfile; in tun_queue_resize() local
3610 tfile = rtnl_dereference(tun->tfiles[i]); in tun_queue_resize()
3611 rings[i] = &tfile->tx_ring; in tun_queue_resize()
3613 list_for_each_entry(tfile, &tun->disabled, next) in tun_queue_resize()
3614 rings[i++] = &tfile->tx_ring; in tun_queue_resize()
3641 struct tun_file *tfile; in tun_device_event() local
3643 tfile = rtnl_dereference(tun->tfiles[i]); in tun_device_event()
3644 tfile->socket.sk->sk_write_space(tfile->socket.sk); in tun_device_event()
3705 struct tun_file *tfile; in tun_get_socket() local
3708 tfile = file->private_data; in tun_get_socket()
3709 if (!tfile) in tun_get_socket()
3711 return &tfile->socket; in tun_get_socket()
3717 struct tun_file *tfile; in tun_get_tx_ring() local
3721 tfile = file->private_data; in tun_get_tx_ring()
3722 if (!tfile) in tun_get_tx_ring()
3724 return &tfile->tx_ring; in tun_get_tx_ring()