| tap.c (666c135b2d859a00ee74c8645b2affacfae45421) | tap.c (37dfe5b8ddeb7c0bb97e3643dcfd8f9f1421ad25) |
|---|---|
| 1// SPDX-License-Identifier: GPL-2.0-only 2#include <linux/etherdevice.h> 3#include <linux/if_tap.h> 4#include <linux/if_vlan.h> 5#include <linux/interrupt.h> 6#include <linux/nsproxy.h> 7#include <linux/compat.h> 8#include <linux/if_tun.h> --- 520 unchanged lines hidden (view full) --- 529 goto err; 530 } 531 532 init_waitqueue_head(&q->sock.wq.wait); 533 q->sock.type = SOCK_RAW; 534 q->sock.state = SS_CONNECTED; 535 q->sock.file = file; 536 q->sock.ops = &tap_socket_ops; | 1// SPDX-License-Identifier: GPL-2.0-only 2#include <linux/etherdevice.h> 3#include <linux/if_tap.h> 4#include <linux/if_vlan.h> 5#include <linux/interrupt.h> 6#include <linux/nsproxy.h> 7#include <linux/compat.h> 8#include <linux/if_tun.h> --- 520 unchanged lines hidden (view full) --- 529 goto err; 530 } 531 532 init_waitqueue_head(&q->sock.wq.wait); 533 q->sock.type = SOCK_RAW; 534 q->sock.state = SS_CONNECTED; 535 q->sock.file = file; 536 q->sock.ops = &tap_socket_ops; |
| 537 sock_init_data_uid(&q->sock, &q->sk, current_fsuid()); | 537 sock_init_data_uid(&q->sock, &q->sk, inode->i_uid); |
| 538 q->sk.sk_write_space = tap_sock_write_space; 539 q->sk.sk_destruct = tap_sock_destruct; 540 q->flags = IFF_VNET_HDR | IFF_NO_PI | IFF_TAP; 541 q->vnet_hdr_sz = sizeof(struct virtio_net_hdr); 542 543 /* 544 * so far only KVM virtio_net uses tap, enable zero copy between 545 * guest kernel and host kernel when lower device supports zerocopy --- 63 unchanged lines hidden (view full) --- 609 int noblock, int *err) 610{ 611 struct sk_buff *skb; 612 613 /* Under a page? Don't bother with paged skb. */ 614 if (prepad + len < PAGE_SIZE || !linear) 615 linear = len; 616 | 538 q->sk.sk_write_space = tap_sock_write_space; 539 q->sk.sk_destruct = tap_sock_destruct; 540 q->flags = IFF_VNET_HDR | IFF_NO_PI | IFF_TAP; 541 q->vnet_hdr_sz = sizeof(struct virtio_net_hdr); 542 543 /* 544 * so far only KVM virtio_net uses tap, enable zero copy between 545 * guest kernel and host kernel when lower device supports zerocopy --- 63 unchanged lines hidden (view full) --- 609 int noblock, int *err) 610{ 611 struct sk_buff *skb; 612 613 /* Under a page? Don't bother with paged skb. */ 614 if (prepad + len < PAGE_SIZE || !linear) 615 linear = len; 616 |
| 617 if (len - linear > MAX_SKB_FRAGS * (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) 618 linear = len - MAX_SKB_FRAGS * (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER); |
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| 617 skb = sock_alloc_send_pskb(sk, prepad + linear, len - linear, noblock, | 619 skb = sock_alloc_send_pskb(sk, prepad + linear, len - linear, noblock, |
| 618 err, 0); | 620 err, PAGE_ALLOC_COSTLY_ORDER); |
| 619 if (!skb) 620 return NULL; 621 622 skb_reserve(skb, prepad); 623 skb_put(skb, linear); 624 skb->data_len = len - linear; 625 skb->len += len - linear; 626 --- 775 unchanged lines hidden --- | 621 if (!skb) 622 return NULL; 623 624 skb_reserve(skb, prepad); 625 skb_put(skb, linear); 626 skb->data_len = len - linear; 627 skb->len += len - linear; 628 --- 775 unchanged lines hidden --- |