raw.c (db6da59cf27b5661ced03754ae0550f8914eda9e) raw.c (e1d001fa5b477c4da46a29be1fcece91db7c7c6f)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * RAW - implementation of IP "raw" sockets.
8 *

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471
472static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
473{
474 struct inet_sock *inet = inet_sk(sk);
475 struct net *net = sock_net(sk);
476 struct ipcm_cookie ipc;
477 struct rtable *rt = NULL;
478 struct flowi4 fl4;
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * RAW - implementation of IP "raw" sockets.
8 *

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471
472static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
473{
474 struct inet_sock *inet = inet_sk(sk);
475 struct net *net = sock_net(sk);
476 struct ipcm_cookie ipc;
477 struct rtable *rt = NULL;
478 struct flowi4 fl4;
479 u8 tos, scope;
479 int free = 0;
480 __be32 daddr;
481 __be32 saddr;
480 int free = 0;
481 __be32 daddr;
482 __be32 saddr;
482 u8 tos;
483 int err;
484 struct ip_options_data opt_copy;
485 struct raw_frag_vec rfv;
486 int hdrincl;
487
488 err = -EMSGSIZE;
489 if (len > 0xFFFF)
490 goto out;

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527 } else {
528 err = -EDESTADDRREQ;
529 if (sk->sk_state != TCP_ESTABLISHED)
530 goto out;
531 daddr = inet->inet_daddr;
532 }
533
534 ipcm_init_sk(&ipc, inet);
483 int err;
484 struct ip_options_data opt_copy;
485 struct raw_frag_vec rfv;
486 int hdrincl;
487
488 err = -EMSGSIZE;
489 if (len > 0xFFFF)
490 goto out;

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527 } else {
528 err = -EDESTADDRREQ;
529 if (sk->sk_state != TCP_ESTABLISHED)
530 goto out;
531 daddr = inet->inet_daddr;
532 }
533
534 ipcm_init_sk(&ipc, inet);
535 /* Keep backward compat */
536 if (hdrincl)
537 ipc.protocol = IPPROTO_RAW;
535
536 if (msg->msg_controllen) {
537 err = ip_cmsg_send(sk, msg, &ipc, false);
538 if (unlikely(err)) {
539 kfree(ipc.opt);
540 goto out;
541 }
542 if (ipc.opt)

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567 if (hdrincl)
568 goto done;
569 if (ipc.opt->opt.srr) {
570 if (!daddr)
571 goto done;
572 daddr = ipc.opt->opt.faddr;
573 }
574 }
538
539 if (msg->msg_controllen) {
540 err = ip_cmsg_send(sk, msg, &ipc, false);
541 if (unlikely(err)) {
542 kfree(ipc.opt);
543 goto out;
544 }
545 if (ipc.opt)

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570 if (hdrincl)
571 goto done;
572 if (ipc.opt->opt.srr) {
573 if (!daddr)
574 goto done;
575 daddr = ipc.opt->opt.faddr;
576 }
577 }
575 tos = get_rtconn_flags(&ipc, sk);
576 if (msg->msg_flags & MSG_DONTROUTE)
577 tos |= RTO_ONLINK;
578 tos = get_rttos(&ipc, inet);
579 scope = ip_sendmsg_scope(inet, &ipc, msg);
578
579 if (ipv4_is_multicast(daddr)) {
580 if (!ipc.oif || netif_index_is_l3_master(sock_net(sk), ipc.oif))
581 ipc.oif = inet->mc_index;
582 if (!saddr)
583 saddr = inet->mc_addr;
584 } else if (!ipc.oif) {
585 ipc.oif = inet->uc_index;

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592 */
593 if (ipc.oif != inet->uc_index &&
594 ipc.oif == l3mdev_master_ifindex_by_index(sock_net(sk),
595 inet->uc_index)) {
596 ipc.oif = inet->uc_index;
597 }
598 }
599
580
581 if (ipv4_is_multicast(daddr)) {
582 if (!ipc.oif || netif_index_is_l3_master(sock_net(sk), ipc.oif))
583 ipc.oif = inet->mc_index;
584 if (!saddr)
585 saddr = inet->mc_addr;
586 } else if (!ipc.oif) {
587 ipc.oif = inet->uc_index;

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594 */
595 if (ipc.oif != inet->uc_index &&
596 ipc.oif == l3mdev_master_ifindex_by_index(sock_net(sk),
597 inet->uc_index)) {
598 ipc.oif = inet->uc_index;
599 }
600 }
601
600 flowi4_init_output(&fl4, ipc.oif, ipc.sockc.mark, tos,
601 RT_SCOPE_UNIVERSE,
602 hdrincl ? IPPROTO_RAW : sk->sk_protocol,
602 flowi4_init_output(&fl4, ipc.oif, ipc.sockc.mark, tos, scope,
603 hdrincl ? ipc.protocol : sk->sk_protocol,
603 inet_sk_flowi_flags(sk) |
604 (hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
605 daddr, saddr, 0, 0, sk->sk_uid);
606
607 if (!hdrincl) {
608 rfv.msg = msg;
609 rfv.hlen = 0;
610

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850static int raw_getsockopt(struct sock *sk, int level, int optname,
851 char __user *optval, int __user *optlen)
852{
853 if (level != SOL_RAW)
854 return ip_getsockopt(sk, level, optname, optval, optlen);
855 return do_raw_getsockopt(sk, level, optname, optval, optlen);
856}
857
604 inet_sk_flowi_flags(sk) |
605 (hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
606 daddr, saddr, 0, 0, sk->sk_uid);
607
608 if (!hdrincl) {
609 rfv.msg = msg;
610 rfv.hlen = 0;
611

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851static int raw_getsockopt(struct sock *sk, int level, int optname,
852 char __user *optval, int __user *optlen)
853{
854 if (level != SOL_RAW)
855 return ip_getsockopt(sk, level, optname, optval, optlen);
856 return do_raw_getsockopt(sk, level, optname, optval, optlen);
857}
858
858static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
859static int raw_ioctl(struct sock *sk, int cmd, int *karg)
859{
860 switch (cmd) {
861 case SIOCOUTQ: {
860{
861 switch (cmd) {
862 case SIOCOUTQ: {
862 int amount = sk_wmem_alloc_get(sk);
863
864 return put_user(amount, (int __user *)arg);
863 *karg = sk_wmem_alloc_get(sk);
864 return 0;
865 }
866 case SIOCINQ: {
867 struct sk_buff *skb;
865 }
866 case SIOCINQ: {
867 struct sk_buff *skb;
868 int amount = 0;
869
870 spin_lock_bh(&sk->sk_receive_queue.lock);
871 skb = skb_peek(&sk->sk_receive_queue);
872 if (skb)
868
869 spin_lock_bh(&sk->sk_receive_queue.lock);
870 skb = skb_peek(&sk->sk_receive_queue);
871 if (skb)
873 amount = skb->len;
872 *karg = skb->len;
873 else
874 *karg = 0;
874 spin_unlock_bh(&sk->sk_receive_queue.lock);
875 spin_unlock_bh(&sk->sk_receive_queue.lock);
875 return put_user(amount, (int __user *)arg);
876 return 0;
876 }
877
878 default:
879#ifdef CONFIG_IP_MROUTE
877 }
878
879 default:
880#ifdef CONFIG_IP_MROUTE
880 return ipmr_ioctl(sk, cmd, (void __user *)arg);
881 return ipmr_ioctl(sk, cmd, karg);
881#else
882 return -ENOIOCTLCMD;
883#endif
884 }
885}
886
887#ifdef CONFIG_COMPAT
888static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)

--- 223 unchanged lines hidden --- 		882#else
883 return -ENOIOCTLCMD;
884#endif
885 }
886}
887
888#ifdef CONFIG_COMPAT
889static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)

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