Release 4.15 net/ipv6/raw.c

/*
 *      RAW sockets for IPv6
 *      Linux INET6 implementation
 *
 *      Authors:
 *      Pedro Roque             <roque@di.fc.ul.pt>
 *
 *      Adapted from linux/net/ipv4/raw.c
 *
 *      Fixes:
 *      Hideaki YOSHIFUJI       :       sin6_scope_id support
 *      YOSHIFUJI,H.@USAGI      :       raw checksum (RFC2292(bis) compliance)
 *      Kazunori MIYAZAWA @USAGI:       change process style to use ip6_append_data
 *
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 */

#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/slab.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/in6.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/icmpv6.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
#include <linux/skbuff.h>
#include <linux/compat.h>
#include <linux/uaccess.h>
#include <asm/ioctls.h>

#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/sock.h>
#include <net/snmp.h>

#include <net/ipv6.h>
#include <net/ndisc.h>
#include <net/protocol.h>
#include <net/ip6_route.h>
#include <net/ip6_checksum.h>
#include <net/addrconf.h>
#include <net/transp_v6.h>
#include <net/udp.h>
#include <net/inet_common.h>
#include <net/tcp_states.h>
#if IS_ENABLED(CONFIG_IPV6_MIP6)
#include <net/mip6.h>
#endif
#include <linux/mroute6.h>

#include <net/raw.h>
#include <net/rawv6.h>
#include <net/xfrm.h>

#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/export.h>


#define	ICMPV6_HDRLEN	4	
/* ICMPv6 header, RFC 4443 Section 2.1 */


struct raw_hashinfo raw_v6_hashinfo = {
	.lock = __RW_LOCK_UNLOCKED(raw_v6_hashinfo.lock),
};

EXPORT_SYMBOL_GPL(raw_v6_hashinfo);



struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
		unsigned short num, const struct in6_addr *loc_addr,
		const struct in6_addr *rmt_addr, int dif, int sdif)
{
	bool is_multicast = ipv6_addr_is_multicast(loc_addr);

	sk_for_each_from(sk)
		if (inet_sk(sk)->inet_num == num) {

			if (!net_eq(sock_net(sk), net))
				continue;

			if (!ipv6_addr_any(&sk->sk_v6_daddr) &&
			    !ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr))
				continue;

			if (sk->sk_bound_dev_if &&
			    sk->sk_bound_dev_if != dif &&
			    sk->sk_bound_dev_if != sdif)
				continue;

			if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
				if (ipv6_addr_equal(&sk->sk_v6_rcv_saddr, loc_addr))
					goto found;
				if (is_multicast &&
				    inet6_mc_check(sk, loc_addr, rmt_addr))
					goto found;
				continue;
			}
			goto found;
		}
	sk = NULL;
found:
	return sk;
}
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Linus Torvalds (pre-git)
88
49.72%
2
12.50%
Arnaldo Carvalho de Melo
22
12.43%
1
6.25%
Andrew McDonald
16
9.04%
1
6.25%
Hideaki Yoshifuji / 吉藤英明
14
7.91%
4
25.00%
Eric Dumazet
12
6.78%
4
25.00%
Pavel Emelyanov
11
6.21%
1
6.25%
David Ahern
9
5.08%
1
6.25%
David S. Miller
3
1.69%
1
6.25%
David L Stevens
2
1.13%
1
6.25%
Total
177
100.00%
16
100.00%


EXPORT_SYMBOL_GPL(__raw_v6_lookup);

/*
 *      0 - deliver
 *      1 - block
 */


static int icmpv6_filter(const struct sock *sk, const struct sk_buff *skb)
{
	struct icmp6hdr _hdr;
	const struct icmp6hdr *hdr;

	/* We require only the four bytes of the ICMPv6 header, not any
         * additional bytes of message body in "struct icmp6hdr".
         */
	hdr = skb_header_pointer(skb, skb_transport_offset(skb),
				 ICMPV6_HDRLEN, &_hdr);
	if (hdr) {
		const __u32 *data = &raw6_sk(sk)->filter.data[0];
		unsigned int type = hdr->icmp6_type;

		return (data[type >> 5] & (1U << (type & 31))) != 0;
	}
	return 1;
}

Contributors
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Linus Torvalds
40
38.83%
2
28.57%
Eric Dumazet
35
33.98%
1
14.29%
Linus Torvalds (pre-git)
25
24.27%
2
28.57%
Werner Almesberger
2
1.94%
1
14.29%
David S. Miller
1
0.97%
1
14.29%
Total
103
100.00%
7
100.00%

#if IS_ENABLED(CONFIG_IPV6_MIP6)

typedef int mh_filter_t(struct sock *sock, struct sk_buff *skb);


static mh_filter_t __rcu *mh_filter __read_mostly;



int rawv6_mh_filter_register(mh_filter_t filter)
{
	rcu_assign_pointer(mh_filter, filter);
	return 0;
}
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Masahide Nakamura
16
88.89%
1
33.33%
Eric Dumazet
2
11.11%
2
66.67%
Total
18
100.00%
3
100.00%


EXPORT_SYMBOL(rawv6_mh_filter_register);



int rawv6_mh_filter_unregister(mh_filter_t filter)
{
	RCU_INIT_POINTER(mh_filter, NULL);
	synchronize_rcu();
	return 0;
}
Contributors
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Masahide Nakamura
19
90.48%
1
33.33%
Stephen Hemminger
1
4.76%
1
33.33%
Eric Dumazet
1
4.76%
1
33.33%
Total
21
100.00%
3
100.00%


EXPORT_SYMBOL(rawv6_mh_filter_unregister);

#endif

/*
 *      demultiplex raw sockets.
 *      (should consider queueing the skb in the sock receive_queue
 *      without calling rawv6.c)
 *
 *      Caller owns SKB so we must make clones.
 */


static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
{
	const struct in6_addr *saddr;
	const struct in6_addr *daddr;
	struct sock *sk;
	bool delivered = false;
	__u8 hash;
	struct net *net;

	saddr = &ipv6_hdr(skb)->saddr;
	daddr = saddr + 1;

	hash = nexthdr & (RAW_HTABLE_SIZE - 1);

	read_lock(&raw_v6_hashinfo.lock);
	sk = sk_head(&raw_v6_hashinfo.ht[hash]);

	if (!sk)
		goto out;

	net = dev_net(skb->dev);
	sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr,
			     inet6_iif(skb), inet6_sdif(skb));

	while (sk) {
		int filtered;

		delivered = true;
		switch (nexthdr) {
		case IPPROTO_ICMPV6:
			filtered = icmpv6_filter(sk, skb);
			break;

#if IS_ENABLED(CONFIG_IPV6_MIP6)
		case IPPROTO_MH:
		{
			/* XXX: To validate MH only once for each packet,
                         * this is placed here. It should be after checking
                         * xfrm policy, however it doesn't. The checking xfrm
                         * policy is placed in rawv6_rcv() because it is
                         * required for each socket.
                         */
			mh_filter_t *filter;

			filter = rcu_dereference(mh_filter);
			filtered = filter ? (*filter)(sk, skb) : 0;
			break;
		}
#endif
		default:
			filtered = 0;
			break;
		}

		if (filtered < 0)
			break;
		if (filtered == 0) {
			struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);

			/* Not releasing hash table! */
			if (clone) {
				nf_reset(clone);
				rawv6_rcv(sk, clone);
			}
		}
		sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
				     inet6_iif(skb), inet6_sdif(skb));
	}
out:
	read_unlock(&raw_v6_hashinfo.lock);
	return delivered;
}

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Linus Torvalds (pre-git)
123
41.00%
2
8.33%
Masahide Nakamura
67
22.33%
2
8.33%
Pavel Emelyanov
25
8.33%
3
12.50%
David S. Miller
22
7.33%
2
8.33%
Arnaldo Carvalho de Melo
11
3.67%
3
12.50%
Eric Dumazet
11
3.67%
3
12.50%
David Ahern
10
3.33%
1
4.17%
Patrick McHardy
9
3.00%
1
4.17%
Hideaki Yoshifuji / 吉藤英明
7
2.33%
2
8.33%
Yasuyuki Kozakai
7
2.33%
1
4.17%
Andrew McDonald
4
1.33%
1
4.17%
Duan Jiong
2
0.67%
1
4.17%
Américo Wang
1
0.33%
1
4.17%
Ian Morris
1
0.33%
1
4.17%
Total
300
100.00%
24
100.00%



bool raw6_local_deliver(struct sk_buff *skb, int nexthdr)
{
	struct sock *raw_sk;

	raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (RAW_HTABLE_SIZE - 1)]);
	if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
		raw_sk = NULL;

	return raw_sk != NULL;
}

Contributors
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Pavel Emelyanov
56
96.55%
2
50.00%
David S. Miller
1
1.72%
1
25.00%
Eric Dumazet
1
1.72%
1
25.00%
Total
58
100.00%
4
100.00%

/* This cleans up af_inet6 a bit. -DaveM */


static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
{
	struct inet_sock *inet = inet_sk(sk);
	struct ipv6_pinfo *np = inet6_sk(sk);
	struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
	__be32 v4addr = 0;
	int addr_type;
	int err;

	if (addr_len < SIN6_LEN_RFC2133)
		return -EINVAL;

	if (addr->sin6_family != AF_INET6)
		return -EINVAL;

	addr_type = ipv6_addr_type(&addr->sin6_addr);

	/* Raw sockets are IPv6 only */
	if (addr_type == IPV6_ADDR_MAPPED)
		return -EADDRNOTAVAIL;

	lock_sock(sk);

	err = -EINVAL;
	if (sk->sk_state != TCP_CLOSE)
		goto out;

	rcu_read_lock();
	/* Check if the address belongs to the host. */
	if (addr_type != IPV6_ADDR_ANY) {
		struct net_device *dev = NULL;

		if (__ipv6_addr_needs_scope_id(addr_type)) {
			if (addr_len >= sizeof(struct sockaddr_in6) &&
			    addr->sin6_scope_id) {
				/* Override any existing binding, if another
                                 * one is supplied by user.
                                 */
				sk->sk_bound_dev_if = addr->sin6_scope_id;
			}

			/* Binding to link-local address requires an interface */
			if (!sk->sk_bound_dev_if)
				goto out_unlock;

			err = -ENODEV;
			dev = dev_get_by_index_rcu(sock_net(sk),
						   sk->sk_bound_dev_if);
			if (!dev)
				goto out_unlock;
		}

		/* ipv4 addr of the socket is invalid.  Only the
                 * unspecified and mapped address have a v4 equivalent.
                 */
		v4addr = LOOPBACK4_IPV6;
		if (!(addr_type & IPV6_ADDR_MULTICAST) &&
		    !sock_net(sk)->ipv6.sysctl.ip_nonlocal_bind) {
			err = -EADDRNOTAVAIL;
			if (!ipv6_chk_addr(sock_net(sk), &addr->sin6_addr,
					   dev, 0)) {
				goto out_unlock;
			}
		}
	}

	inet->inet_rcv_saddr = inet->inet_saddr = v4addr;
	sk->sk_v6_rcv_saddr = addr->sin6_addr;
	if (!(addr_type & IPV6_ADDR_MULTICAST))
		np->saddr = addr->sin6_addr;
	err = 0;
out_unlock:
	rcu_read_unlock();
out:
	release_sock(sk);
	return err;
}

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Linus Torvalds (pre-git)
205
62.31%
4
17.39%
Ville Nuorvala
34
10.33%
2
8.70%
David S. Miller
22
6.69%
2
8.70%
Eric Dumazet
21
6.38%
3
13.04%
Hannes Frederic Sowa
15
4.56%
2
8.70%
Tom Herbert
12
3.65%
1
4.35%
Hideaki Yoshifuji / 吉藤英明
7
2.13%
2
8.70%
Arnaldo Carvalho de Melo
5
1.52%
2
8.70%
Pavel Emelyanov
2
0.61%
1
4.35%
Daniel Lezcano
2
0.61%
1
4.35%
Alexey Dobriyan
2
0.61%
1
4.35%
Eric W. Biedermann
1
0.30%
1
4.35%
Al Viro
1
0.30%
1
4.35%
Total
329
100.00%
23
100.00%



static void rawv6_err(struct sock *sk, struct sk_buff *skb,
	       struct inet6_skb_parm *opt,
	       u8 type, u8 code, int offset, __be32 info)
{
	struct inet_sock *inet = inet_sk(sk);
	struct ipv6_pinfo *np = inet6_sk(sk);
	int err;
	int harderr;

	/* Report error on raw socket, if:
           1. User requested recverr.
           2. Socket is connected (otherwise the error indication
              is useless without recverr and error is hard.
         */
	if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
		return;

	harderr = icmpv6_err_convert(type, code, &err);
	if (type == ICMPV6_PKT_TOOBIG) {
		ip6_sk_update_pmtu(skb, sk, info);
		harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
	}
	if (type == NDISC_REDIRECT) {
		ip6_sk_redirect(skb, sk);
		return;
	}
	if (np->recverr) {
		u8 *payload = skb->data;
		if (!inet->hdrincl)
			payload += offset;
		ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
	}

	if (np->recverr || harderr) {
		sk->sk_err = err;
		sk->sk_error_report(sk);
	}
}

Contributors
Person
Tokens
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CommitProp
Linus Torvalds (pre-git)
115
58.38%
3
23.08%
David S. Miller
48
24.37%
3
23.08%
Linus Torvalds
23
11.68%
1
7.69%
Arnaldo Carvalho de Melo
4
2.03%
2
15.38%
Duan Jiong
3
1.52%
1
7.69%
Brian Haley
2
1.02%
1
7.69%
Pavel Emelyanov
1
0.51%
1
7.69%
Al Viro
1
0.51%
1
7.69%
Total
197
100.00%
13
100.00%



void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
		u8 type, u8 code, int inner_offset, __be32 info)
{
	struct sock *sk;
	int hash;
	const struct in6_addr *saddr, *daddr;
	struct net *net;

	hash = nexthdr & (RAW_HTABLE_SIZE - 1);

	read_lock(&raw_v6_hashinfo.lock);
	sk = sk_head(&raw_v6_hashinfo.ht[hash]);
	if (sk) {
		/* Note: ipv6_hdr(skb) != skb->data */
		const struct ipv6hdr *ip6h = (const struct ipv6hdr *)skb->data;
		saddr = &ip6h->saddr;
		daddr = &ip6h->daddr;
		net = dev_net(skb->dev);

		while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
					     inet6_iif(skb), inet6_iif(skb)))) {
			rawv6_err(sk, skb, NULL, type, code,
					inner_offset, info);
			sk = sk_next(sk);
		}
	}
	read_unlock(&raw_v6_hashinfo.lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
156
83.42%
3
33.33%
Hideaki Yoshifuji / 吉藤英明
20
10.70%
2
22.22%
David Ahern
5
2.67%
1
11.11%
Eric Dumazet
3
1.60%
1
11.11%
Brian Haley
2
1.07%
1
11.11%
Duan Jiong
1
0.53%
1
11.11%
Total
187
100.00%
9
100.00%



static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
	if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) &&
	    skb_checksum_complete(skb)) {
		atomic_inc(&sk->sk_drops);
		kfree_skb(skb);
		return NET_RX_DROP;
	}

	/* Charge it to the socket. */
	skb_dst_drop(skb);
	if (sock_queue_rcv_skb(sk, skb) < 0) {
		kfree_skb(skb);
		return NET_RX_DROP;
	}

	return 0;
}

Contributors
Person
Tokens
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Commits
CommitProp
Linus Torvalds (pre-git)
40
45.45%
1
10.00%
Alexey Kuznetsov
18
20.45%
1
10.00%
Eric Dumazet
9
10.23%
3
30.00%
Hideaki Yoshifuji / 吉藤英明
9
10.23%
1
10.00%
Wang Chen
8
9.09%
1
10.00%
Yang Hongyang
2
2.27%
1
10.00%
Herbert Xu
1
1.14%
1
10.00%
Arnaldo Carvalho de Melo
1
1.14%
1
10.00%
Total
88
100.00%
10
100.00%

/*
 *      This is next to useless...
 *      if we demultiplex in network layer we don't need the extra call
 *      just to queue the skb...
 *      maybe we could have the network decide upon a hint if it
 *      should call raw_rcv for demultiplexing
 */


int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
{
	struct inet_sock *inet = inet_sk(sk);
	struct raw6_sock *rp = raw6_sk(sk);

	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
		atomic_inc(&sk->sk_drops);
		kfree_skb(skb);
		return NET_RX_DROP;
	}

	if (!rp->checksum)
		skb->ip_summed = CHECKSUM_UNNECESSARY;

	if (skb->ip_summed == CHECKSUM_COMPLETE) {
		skb_postpull_rcsum(skb, skb_network_header(skb),
				   skb_network_header_len(skb));
		if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
				     &ipv6_hdr(skb)->daddr,
				     skb->len, inet->inet_num, skb->csum))
			skb->ip_summed = CHECKSUM_UNNECESSARY;
	}
	if (!skb_csum_unnecessary(skb))
		skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
							 &ipv6_hdr(skb)->daddr,
							 skb->len,
							 inet->inet_num, 0));

	if (inet->hdrincl) {
		if (skb_checksum_complete(skb)) {
			atomic_inc(&sk->sk_drops);
			kfree_skb(skb);
			return NET_RX_DROP;
		}
	}

	rawv6_rcv_skb(sk, skb);
	return 0;
}


Contributors
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Tokens
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CommitProp
Alexey Kuznetsov
97
41.99%
1
5.00%
Linus Torvalds (pre-git)
32
13.85%
3
15.00%
Arnaldo Carvalho de Melo
22
9.52%
5
25.00%
Kazunori Miyazawa
22
9.52%
1
5.00%
Wang Chen
16
6.93%
1
5.00%
Linus Torvalds
10
4.33%
1
5.00%
Patrick McHardy
10
4.33%
2
10.00%
David S. Miller
9
3.90%
1
5.00%
Herbert Xu
7
3.03%
2
10.00%
Al Viro
3
1.30%
1
5.00%
Eric Dumazet
2
0.87%
1
5.00%
Yang Hongyang
1
0.43%
1
5.00%
Total
231
100.00%
20
100.00%

/*
 *      This should be easy, if there is something there
 *      we return it, otherwise we block.
 */



static int rawv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
			 int noblock, int flags, int *addr_len)
{
	struct ipv6_pinfo *np = inet6_sk(sk);
	DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
	struct sk_buff *skb;
	size_t copied;
	int err;

	if (flags & MSG_OOB)
		return -EOPNOTSUPP;

	if (flags & MSG_ERRQUEUE)
		return ipv6_recv_error(sk, msg, len, addr_len);

	if (np->rxpmtu && np->rxopt.bits.rxpmtu)
		return ipv6_recv_rxpmtu(sk, msg, len, addr_len);

	skb = skb_recv_datagram(sk, flags, noblock, &err);
	if (!skb)
		goto out;

	copied = skb->len;
	if (copied > len) {
		copied = len;
		msg->msg_flags |= MSG_TRUNC;
	}

	if (skb_csum_unnecessary(skb)) {
		err = skb_copy_datagram_msg(skb, 0, msg, copied);
	} else if (msg->msg_flags&MSG_TRUNC) {
		if (__skb_checksum_complete(skb))
			goto csum_copy_err;
		err = skb_copy_datagram_msg(skb, 0, msg, copied);
	} else {
		err = skb_copy_and_csum_datagram_msg(skb, 0, msg);
		if (err == -EINVAL)
			goto csum_copy_err;
	}
	if (err)
		goto out_free;

	/* Copy the address. */
	if (sin6) {
		sin6->sin6_family = AF_INET6;
		sin6->sin6_port = 0;
		sin6->sin6_addr = ipv6_hdr(skb)->saddr;
		sin6->sin6_flowinfo = 0;
		sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr,
							  inet6_iif(skb));
		*addr_len = sizeof(*sin6);
	}

	sock_recv_ts_and_drops(msg, sk, skb);

	if (np->rxopt.all)
		ip6_datagram_recv_ctl(sk, msg, skb);

	err = copied;
	if (flags & MSG_TRUNC)
		err = skb->len;

out_free:
	skb_free_datagram(sk, skb);
out:
	return err;

csum_copy_err:
	skb_kill_datagram(sk, skb, flags);

	/* Error for blocking case is chosen to masquerade
           as some normal condition.
         */
	err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
	goto out;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
209
52.64%
8
25.81%
Alexey Kuznetsov
86
21.66%
1
3.23%
Brian Haley
24
6.05%
1
3.23%
David S. Miller
24
6.05%
3
9.68%
Hannes Frederic Sowa
16
4.03%
3
9.68%
Herbert Xu
8
2.02%
3
9.68%
Steffen Hurrle
7
1.76%
1
3.23%
Tetsuo Handa
6
1.51%
1
3.23%
Stephen Hemminger
4
1.01%
1
3.23%
Hideaki Yoshifuji / 吉藤英明
3
0.76%
1
3.23%
Arnaldo Carvalho de Melo
3
0.76%
1
3.23%
Tom Parkin
1
0.25%
1
3.23%
Alexey Dobriyan
1
0.25%
1
3.23%
Linus Torvalds
1
0.25%
1
3.23%
Neil Horman
1
0.25%
1
3.23%
Al Viro
1
0.25%
1
3.23%
Duan Jiong
1
0.25%
1
3.23%
Stephen Rothwell
1
0.25%
1
3.23%
Total
397
100.00%
31
100.00%



static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
				     struct raw6_sock *rp)
{
	struct sk_buff *skb;
	int err = 0;
	int offset;
	int len;
	int total_len;
	__wsum tmp_csum;
	__sum16 csum;

	if (!rp->checksum)
		goto send;

	skb = skb_peek(&sk->sk_write_queue);
	if (!skb)
		goto out;

	offset = rp->offset;
	total_len = inet_sk(sk)->cork.base.length;
	if (offset >= total_len - 1) {
		err = -EINVAL;
		ip6_flush_pending_frames(sk);
		goto out;
	}

	/* should be check HW csum miyazawa */
	if (skb_queue_len(&sk->sk_write_queue) == 1) {
		/*
                 * Only one fragment on the socket.
                 */
		tmp_csum = skb->csum;
	} else {
		struct sk_buff *csum_skb = NULL;
		tmp_csum = 0;

		skb_queue_walk(&sk->sk_write_queue, skb) {
			tmp_csum = csum_add(tmp_csum, skb->csum);

			if (csum_skb)
				continue;

			len = skb->len - skb_transport_offset(skb);
			if (offset >= len) {
				offset -= len;
				continue;
			}

			csum_skb = skb;
		}

		skb = csum_skb;
	}

	offset += skb_transport_offset(skb);
	err = skb_copy_bits(skb, offset, &csum, 2);
	if (err < 0) {
		ip6_flush_pending_frames(sk);
		goto out;
	}

	/* in case cksum was not initialized */
	if (unlikely(csum))
		tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));

	csum = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,
			       total_len, fl6->flowi6_proto, tmp_csum);

	if (csum == 0 && fl6->flowi6_proto == IPPROTO_UDP)
		csum = CSUM_MANGLED_0;

	BUG_ON(skb_store_bits(skb, offset, &csum, 2));

send:
	err = ip6_push_pending_frames(sk);
out:
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
104
31.23%
2
8.33%
Kazunori Miyazawa
89
26.73%
1
4.17%
Linus Torvalds (pre-git)
36
10.81%
3
12.50%
Hideaki Yoshifuji / 吉藤英明
35
10.51%
4
16.67%
Dave Jones
17
5.11%
1
4.17%
David S. Miller
14
4.20%
3
12.50%
Arnaldo Carvalho de Melo
13
3.90%
3
12.50%
Al Viro
9
2.70%
3
12.50%
Fabian Frederick
5
1.50%
1
4.17%
Himangi Saraogi
4
1.20%
1
4.17%
Brian Haley
4
1.20%
1
4.17%
Alexey Kuznetsov
3
0.90%
1
4.17%
Total
333
100.00%
24
100.00%



static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length,
			struct flowi6 *fl6, struct dst_entry **dstp,
			unsigned int flags)
{
	struct ipv6_pinfo *np = inet6_sk(sk);
	struct net *net = sock_net(sk);
	struct ipv6hdr *iph;
	struct sk_buff *skb;
	int err;
	struct rt6_info *rt = (struct rt6_info *)*dstp;
	int hlen = LL_RESERVED_SPACE(rt->dst.dev);
	int tlen = rt->dst.dev->needed_tailroom;

	if (length > rt->dst.dev->mtu) {
		ipv6_local_error(sk, EMSGSIZE, fl6, rt->dst.dev->mtu);
		return -EMSGSIZE;
	}
	if (length < sizeof(struct ipv6hdr))
		return -EINVAL;
	if (flags&MSG_PROBE)
		goto out;

	skb = sock_alloc_send_skb(sk,
				  length + hlen + tlen + 15,
				  flags & MSG_DONTWAIT, &err);
	if (!skb)
		goto error;
	skb_reserve(skb, hlen);

	skb->protocol = htons(ETH_P_IPV6);
	skb->priority = sk->sk_priority;
	skb->mark = sk->sk_mark;
	skb_dst_set(skb, &rt->dst);
	*dstp = NULL;

	skb_put(skb, length);
	skb_reset_network_header(skb);
	iph = ipv6_hdr(skb);

	skb->ip_summed = CHECKSUM_NONE;

	if (flags & MSG_CONFIRM)
		skb_set_dst_pending_confirm(skb, 1);

	skb->transport_header = skb->network_header;
	err = memcpy_from_msg(iph, msg, length);
	if (err)
		goto error_fault;

	/* if egress device is enslaved to an L3 master device pass the
         * skb to its handler for processing
         */
	skb = l3mdev_ip6_out(sk, skb);
	if (unlikely(!skb))
		return 0;

	IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
	err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, sk, skb,
		      NULL, rt->dst.dev, dst_output);
	if (err > 0)
		err = net_xmit_errno(err);
	if (err)
		goto error;
out:
	return 0;

error_fault:
	err = -EFAULT;
	kfree_skb(skb);
error:
	IP6_INC_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
	if (err == -ENOBUFS && !np->recverr)
		err = 0;
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kazunori Miyazawa
224
51.85%
1
3.03%
Eric Dumazet
40
9.26%
3
9.09%
Herbert Xu
30
6.94%
2
6.06%
David Ahern
21
4.86%
1
3.03%
Arnaldo Carvalho de Melo
15
3.47%
4
12.12%
Eric W. Biedermann
15
3.47%
3
9.09%
Alexander Potapenko
14
3.24%
1
3.03%
Julian Anastasov
13
3.01%
1
3.03%
Hannes Frederic Sowa
9
2.08%
1
3.03%
Hideaki Yoshifuji / 吉藤英明
9
2.08%
2
6.06%
Johannes Berg
7
1.62%
1
3.03%
Tóth László Attila
7
1.62%
1
3.03%
Neil Horman
6
1.39%
1
3.03%
Al Viro
5
1.16%
2
6.06%
David S. Miller
5
1.16%
2
6.06%
Linus Torvalds (pre-git)
4
0.93%
2
6.06%
Shirley Ma
3
0.69%
1
3.03%
Denis V. Lunev
2
0.46%
1
3.03%
Patrick McHardy
1
0.23%
1
3.03%
Jan Engelhardt
1
0.23%
1
3.03%
Ian Morris
1
0.23%
1
3.03%
Total
432
100.00%
33
100.00%


struct raw6_frag_vec {
	
struct msghdr *msg;
	
int hlen;
	
char c[4];
};



static int rawv6_probe_proto_opt(struct raw6_frag_vec *rfv, struct flowi6 *fl6)
{
	int err = 0;
	switch (fl6->flowi6_proto) {
	case IPPROTO_ICMPV6:
		rfv->hlen = 2;
		err = memcpy_from_msg(rfv->c, rfv->msg, rfv->hlen);
		if (!err) {
			fl6->fl6_icmp_type = rfv->c[0];
			fl6->fl6_icmp_code = rfv->c[1];
		}
		break;
	case IPPROTO_MH:
		rfv->hlen = 4;
		err = memcpy_from_msg(rfv->c, rfv->msg, rfv->hlen);
		if (!err)
			fl6->fl6_mh_type = rfv->c[2];
	}
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Al Viro
75
57.69%
1
16.67%
Masahide Nakamura
48
36.92%
2
33.33%
David S. Miller
6
4.62%
2
33.33%
Heiko Carstens
1
0.77%
1
16.67%
Total
130
100.00%
6
100.00%



static int raw6_getfrag(void *from, char *to, int offset, int len, int odd,
		       struct sk_buff *skb)
{
	struct raw6_frag_vec *rfv = from;

	if (offset < rfv->hlen) {
		int copy = min(rfv->hlen - offset, len);

		if (skb->ip_summed == CHECKSUM_PARTIAL)
			memcpy(to, rfv->c + offset, copy);
		else
			skb->csum = csum_block_add(
				skb->csum,
				csum_partial_copy_nocheck(rfv->c + offset,
							  to, copy, 0),
				odd);

		odd = 0;
		offset += copy;
		to += copy;
		len -= copy;

		if (!len)
			return 0;
	}

	offset -= rfv->hlen;

	return ip_generic_getfrag(rfv->msg, to, offset, len, odd, skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Al Viro
131
83.44%
1
25.00%
Masahide Nakamura
20
12.74%
2
50.00%
Heiko Carstens
6
3.82%
1
25.00%
Total
157
100.00%
4
100.00%



static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
	struct ipv6_txoptions *opt_to_free = NULL;
	struct ipv6_txoptions opt_space;
	DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
	struct in6_addr *daddr, *final_p, final;
	struct inet_sock *inet = inet_sk(sk);
	struct ipv6_pinfo *np = inet6_sk(sk);
	struct raw6_sock *rp = raw6_sk(sk);
	struct ipv6_txoptions *opt = NULL;
	struct ip6_flowlabel *flowlabel = NULL;
	struct dst_entry *dst = NULL;
	struct raw6_frag_vec rfv;
	struct flowi6 fl6;
	struct sockcm_cookie sockc;
	struct ipcm6_cookie ipc6;
	int addr_len = msg->msg_namelen;
	u16 proto;
	int err;

	/* Rough check on arithmetic overflow,
           better check is made in ip6_append_data().
         */
	if (len > INT_MAX)
		return -EMSGSIZE;

	/* Mirror BSD error message compatibility */
	if (msg->msg_flags & MSG_OOB)
		return -EOPNOTSUPP;

	/*
         *      Get and verify the address.
         */
	memset(&fl6, 0, sizeof(fl6));

	fl6.flowi6_mark = sk->sk_mark;
	fl6.flowi6_uid = sk->sk_uid;

	ipc6.hlimit = -1;
	ipc6.tclass = -1;
	ipc6.dontfrag = -1;
	ipc6.opt = NULL;

	if (sin6) {
		if (addr_len < SIN6_LEN_RFC2133)
			return -EINVAL;

		if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
			return -EAFNOSUPPORT;

		/* port is the proto value [0..255] carried in nexthdr */
		proto = ntohs(sin6->sin6_port);

		if (!proto)
			proto = inet->inet_num;
		else if (proto != inet->inet_num)
			return -EINVAL;

		if (proto > 255)
			return -EINVAL;

		daddr = &sin6->sin6_addr;
		if (np->sndflow) {
			fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
			if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
				flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
				if (!flowlabel)
					return -EINVAL;
			}
		}

		/*
                 * Otherwise it will be difficult to maintain
                 * sk->sk_dst_cache.
                 */
		if (sk->sk_state == TCP_ESTABLISHED &&
		    ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
			daddr = &sk->sk_v6_daddr;

		if (addr_len >= sizeof(struct sockaddr_in6) &&
		    sin6->sin6_scope_id &&
		    __ipv6_addr_needs_scope_id(__ipv6_addr_type(daddr)))
			fl6.flowi6_oif = sin6->sin6_scope_id;
	} else {
		if (sk->sk_state != TCP_ESTABLISHED)
			return -EDESTADDRREQ;

		proto = inet->inet_num;
		daddr = &sk->sk_v6_daddr;
		fl6.flowlabel = np->flow_label;
	}

	if (fl6.flowi6_oif == 0)
		fl6.flowi6_oif = sk->sk_bound_dev_if;

	sockc.tsflags = sk->sk_tsflags;
	if (msg->msg_controllen) {
		opt = &opt_space;
		memset(opt, 0, sizeof(struct ipv6_txoptions));
		opt->tot_len = sizeof(struct ipv6_txoptions);
		ipc6.opt = opt;

		err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, &ipc6, &sockc);
		if (err < 0) {
			fl6_sock_release(flowlabel);
			return err;
		}
		if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
			flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
			if (!flowlabel)
				return -EINVAL;
		}
		if (!(opt->opt_nflen|opt->opt_flen))
			opt = NULL;
	}
	if (!opt) {
		opt = txopt_get(np);
		opt_to_free = opt;
	}
	if (flowlabel)
		opt = fl6_merge_options(&opt_space, flowlabel, opt);
	opt = ipv6_fixup_options(&opt_space, opt);

	fl6.flowi6_proto = proto;
	rfv.msg = msg;
	rfv.hlen = 0;
	err = rawv6_probe_proto_opt(&rfv, &fl6);
	if (err)
		goto out;

	if (!ipv6_addr_any(daddr))
		fl6.daddr = *daddr;
	else
		fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
	if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
		fl6.saddr = np->saddr;

	final_p = fl6_update_dst(&fl6, opt, &final);

	if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
		fl6.flowi6_oif = np->mcast_oif;
	else if (!fl6.flowi6_oif)
		fl6.flowi6_oif = np->ucast_oif;
	security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));

	if (inet->hdrincl)
		fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;

	if (ipc6.tclass < 0)
		ipc6.tclass = np->tclass;

	fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);

	dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
	if (IS_ERR(dst)) {
		err = PTR_ERR(dst);
		goto out;
	}
	if (ipc6.hlimit < 0)
		ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);

	if (ipc6.dontfrag < 0)
		ipc6.dontfrag = np->dontfrag;

	if (msg->msg_flags&MSG_CONFIRM)
		goto do_confirm;

back_from_confirm:
	if (inet->hdrincl)
		err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst, msg->msg_flags);
	else {
		ipc6.opt = opt;
		lock_sock(sk);
		err = ip6_append_data(sk, raw6_getfrag, &rfv,
			len, 0, &ipc6, &fl6, (struct rt6_info *)dst,
			msg->msg_flags, &sockc);

		if (err)
			ip6_flush_pending_frames(sk);
		else if (!(msg->msg_flags & MSG_MORE))
			err = rawv6_push_pending_frames(sk, &fl6, rp);
		release_sock(sk);
	}
done:
	dst_release(dst);
out:
	fl6_sock_release(flowlabel);
	txopt_put(opt_to_free);
	return err < 0 ? err : len;
do_confirm:
	if (msg->msg_flags & MSG_PROBE)
		dst_confirm_neigh(dst, &fl6.daddr);
	if (!(msg->msg_flags & MSG_PROBE) || len)
		goto back_from_confirm;
	err = 0;
	goto done;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
471
42.70%
11
16.92%
Kazunori Miyazawa
181
16.41%
2
3.08%
David S. Miller
95
8.61%
7
10.77%
Wei Wang
54
4.90%
1
1.54%
Hideaki Yoshifuji / 吉藤英明
42
3.81%
9
13.85%
Hannes Frederic Sowa
35
3.17%
2
3.08%
Brian Haley
32
2.90%
2
3.08%
Eric Dumazet
30
2.72%
4
6.15%
Al Viro
22
1.99%
1
1.54%
Soheil Hassas Yeganeh
17
1.54%
2
3.08%
Erich E. Hoover
16
1.45%
1
1.54%
Lorenzo Colitti
14
1.27%
2
3.08%
Julian Anastasov
14
1.27%
1
1.54%
Martin KaFai Lau
12
1.09%
1
1.54%
Heiko Carstens
9
0.82%
1
1.54%
Arnaldo Carvalho de Melo
8
0.73%
3
4.62%
Alexey Dobriyan
8
0.73%
2
3.08%
Steffen Hurrle
7
0.63%
1
1.54%
Venkat Yekkirala
7
0.63%
1
1.54%
Masahide Nakamura
6
0.54%
1
1.54%
Tóth László Attila
6
0.54%
1
1.54%
Arnaud Ebalard
6
0.54%
1
1.54%
Ian Morris
3
0.27%
1
1.54%
Maciej Żenczykowski
2
0.18%
1
1.54%
Suresh Krishnan
1
0.09%
1
1.54%
Stephen Hemminger
1
0.09%
1
1.54%
Ville Nuorvala
1
0.09%
1
1.54%
Tom Parkin
1
0.09%
1
1.54%
Thomas Graf
1
0.09%
1
1.54%
Nicolas Dichtel
1
0.09%
1
1.54%
Total
1103
100.00%
65
100.00%



static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
			       char __user *optval, int optlen)
{
	switch (optname) {
	case ICMPV6_FILTER:
		if (optlen > sizeof(struct icmp6_filter))
			optlen = sizeof(struct icmp6_filter);
		if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
			return -EFAULT;
		return 0;
	default:
		return -ENOPROTOOPT;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
80
95.24%
2
50.00%
David S. Miller
3
3.57%
1
25.00%
Al Viro
1
1.19%
1
25.00%
Total
84
100.00%
4
100.00%



static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
			       char __user *optval, int __user *optlen)
{
	int len;

	switch (optname) {
	case ICMPV6_FILTER:
		if (get_user(len, optlen))
			return -EFAULT;
		if (len < 0)
			return -EINVAL;
		if (len > sizeof(struct icmp6_filter))
			len = sizeof(struct icmp6_filter);
		if (put_user(len, optlen))
			return -EFAULT;
		if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
			return -EFAULT;
		return 0;
	default:
		return -ENOPROTOOPT;
	}

	return 0;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
110
88.00%
3
50.00%
Linus Torvalds
10
8.00%
1
16.67%
David S. Miller
3
2.40%
1
16.67%
Al Viro
2
1.60%
1
16.67%
Total
125
100.00%
6
100.00%



static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
			    char __user *optval, unsigned int optlen)
{
	struct raw6_sock *rp = raw6_sk(sk);
	int val;

	if (get_user(val, (int __user *)optval))
		return -EFAULT;

	switch (optname) {
	case IPV6_HDRINCL:
		if (sk->sk_type != SOCK_RAW)
			return -EINVAL;
		inet_sk(sk)->hdrincl = !!val;
		return 0;
	case IPV6_CHECKSUM:
		if (inet_sk(sk)->inet_num == IPPROTO_ICMPV6 &&
		    level == IPPROTO_IPV6) {
			/*
                         * RFC3542 tells that IPV6_CHECKSUM socket
                         * option in the IPPROTO_IPV6 level is not
                         * allowed on ICMPv6 sockets.
                         * If you want to set it, use IPPROTO_RAW
                         * level IPV6_CHECKSUM socket option
                         * (Linux extension).
                         */
			return -EINVAL;
		}

		/* You may get strange result with a positive odd offset;
                   RFC2292bis agrees with me. */
		if (val > 0 && (val&1))
			return -EINVAL;
		if (val < 0) {
			rp->checksum = 0;
		} else {
			rp->checksum = 1;
			rp->offset = val;
		}

		return 0;

	default:
		return -ENOPROTOOPT;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
91
53.22%
3
23.08%
Hannes Frederic Sowa
29
16.96%
1
7.69%
Hideaki Yoshifuji / 吉藤英明
20
11.70%
1
7.69%
Alexey Kuznetsov
16
9.36%
1
7.69%
Arnaldo Carvalho de Melo
5
2.92%
1
7.69%
David S. Miller
4
2.34%
2
15.38%
Joe Perches
2
1.17%
1
7.69%
Al Viro
2
1.17%
1
7.69%
Eric Dumazet
1
0.58%
1
7.69%
Dmitry Mishin
1
0.58%
1
7.69%
Total
171
100.00%
13
100.00%



static int rawv6_setsockopt(struct sock *sk, int level, int optname,
			  char __user *optval, unsigned int optlen)
{
	switch (level) {
	case SOL_RAW:
		break;

	case SOL_ICMPV6:
		if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
			return -EOPNOTSUPP;
		return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
	case SOL_IPV6:
		if (optname == IPV6_CHECKSUM ||
		    optname == IPV6_HDRINCL)
			break;
		/* fall through */
	default:
		return ipv6_setsockopt(sk, level, optname, optval, optlen);
	}

	return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dmitry Mishin
79
70.54%
1
12.50%
Linus Torvalds (pre-git)
23
20.54%
1
12.50%
Hannes Frederic Sowa
4
3.57%
1
12.50%
David S. Miller
3
2.68%
2
25.00%
Al Viro
1
0.89%
1
12.50%
Eric Dumazet
1
0.89%
1
12.50%
Gustavo A. R. Silva
1
0.89%
1
12.50%
Total
112
100.00%
8
100.00%

#ifdef CONFIG_COMPAT


static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
				   char __user *optval, unsigned int optlen)
{
	switch (level) {
	case SOL_RAW:
		break;
	case SOL_ICMPV6:
		if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
			return -EOPNOTSUPP;
		return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
	case SOL_IPV6:
		if (optname == IPV6_CHECKSUM ||
		    optname == IPV6_HDRINCL)
			break;
		/* fall through */
	default:
		return compat_ipv6_setsockopt(sk, level, optname,
					      optval, optlen);
	}
	return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
62
55.36%
1
14.29%
Dmitry Mishin
40
35.71%
1
14.29%
Hannes Frederic Sowa
4
3.57%
1
14.29%
David S. Miller
4
3.57%
2
28.57%
Eric Dumazet
1
0.89%
1
14.29%
Gustavo A. R. Silva
1
0.89%
1
14.29%
Total
112
100.00%
7
100.00%

#endif



static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
			    char __user *optval, int __user *optlen)
{
	struct raw6_sock *rp = raw6_sk(sk);
	int val, len;

	if (get_user(len, optlen))
		return -EFAULT;

	switch (optname) {
	case IPV6_HDRINCL:
		val = inet_sk(sk)->hdrincl;
		break;
	case IPV6_CHECKSUM:
		/*
                 * We allow getsockopt() for IPPROTO_IPV6-level
                 * IPV6_CHECKSUM socket option on ICMPv6 sockets
                 * since RFC3542 is silent about it.
                 */
		if (rp->checksum == 0)
			val = -1;
		else
			val = rp->offset;
		break;

	default:
		return -ENOPROTOOPT;
	}

	len = min_t(unsigned int, sizeof(int), len);

	if (put_user(len, optlen))
		return -EFAULT;
	if (copy_to_user(optval, &val, len))
		return -EFAULT;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
84
57.14%
1
12.50%
Dmitry Mishin
41
27.89%
1
12.50%
Hannes Frederic Sowa
13
8.84%
1
12.50%
Linus Torvalds
5
3.40%
2
25.00%
Arnaldo Carvalho de Melo
2
1.36%
1
12.50%
Hideaki Yoshifuji / 吉藤英明
1
0.68%
1
12.50%
Dave Jones
1
0.68%
1
12.50%
Total
147
100.00%
8
100.00%



static int rawv6_getsockopt(struct sock *sk, int level, int optname,
			  char __user *optval, int __user *optlen)
{
	switch (level) {
	case SOL_RAW:
		break;

	case SOL_ICMPV6:
		if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
			return -EOPNOTSUPP;
		return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
	case SOL_IPV6:
		if (optname == IPV6_CHECKSUM ||
		    optname == IPV6_HDRINCL)
			break;
		/* fall through */
	default:
		return ipv6_getsockopt(sk, level, optname, optval, optlen);
	}

	return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dmitry Mishin
107
94.69%
1
25.00%
Hannes Frederic Sowa
4
3.54%
1
25.00%
Eric Dumazet
1
0.88%
1
25.00%
Gustavo A. R. Silva
1
0.88%
1
25.00%
Total
113
100.00%
4
100.00%

#ifdef CONFIG_COMPAT


static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
				   char __user *optval, int __user *optlen)
{
	switch (level) {
	case SOL_RAW:
		break;
	case SOL_ICMPV6:
		if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
			return -EOPNOTSUPP;
		return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
	case SOL_IPV6:
		if (optname == IPV6_CHECKSUM ||
		    optname == IPV6_HDRINCL)
			break;
		/* fall through */
	default:
		return compat_ipv6_getsockopt(sk, level, optname,
					      optval, optlen);
	}
	return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dmitry Mishin
107
94.69%
1
25.00%
Hannes Frederic Sowa
4
3.54%
1
25.00%
Eric Dumazet
1
0.88%
1
25.00%
Gustavo A. R. Silva
1
0.88%
1
25.00%
Total
113
100.00%
4
100.00%

#endif



static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
	switch (cmd) {
	case SIOCOUTQ: {
		int amount = sk_wmem_alloc_get(sk);

		return put_user(amount, (int __user *)arg);
	}
	case SIOCINQ: {
		struct sk_buff *skb;
		int amount = 0;

		spin_lock_bh(&sk->sk_receive_queue.lock);
		skb = skb_peek(&sk->sk_receive_queue);
		if (skb)
			amount = skb->len;
		spin_unlock_bh(&sk->sk_receive_queue.lock);
		return put_user(amount, (int __user *)arg);
	}

	default:
#ifdef CONFIG_IPV6_MROUTE
		return ip6mr_ioctl(sk, cmd, (void __user *)arg);
#else
		return -ENOIOCTLCMD;
#endif
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
113
77.93%
1
14.29%
Hideaki Yoshifuji / 吉藤英明
22
15.17%
1
14.29%
Arnaldo Carvalho de Melo
3
2.07%
1
14.29%
Al Viro
2
1.38%
1
14.29%
Jamie Bainbridge
2
1.38%
1
14.29%
Herbert Xu
2
1.38%
1
14.29%
Eric Dumazet
1
0.69%
1
14.29%
Total
145
100.00%
7
100.00%

#ifdef CONFIG_COMPAT


static int compat_rawv6_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
{
	switch (cmd) {
	case SIOCOUTQ:
	case SIOCINQ:
		return -ENOIOCTLCMD;
	default:
#ifdef CONFIG_IPV6_MROUTE
		return ip6mr_compat_ioctl(sk, cmd, compat_ptr(arg));
#else
		return -ENOIOCTLCMD;
#endif
	}
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
60
100.00%
1
100.00%
Total
60
100.00%
1
100.00%

#endif



static void rawv6_close(struct sock *sk, long timeout)
{
	if (inet_sk(sk)->inet_num == IPPROTO_RAW)
		ip6_ra_control(sk, -1);
	ip6mr_sk_done(sk);
	sk_common_release(sk);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
33
76.74%
2
33.33%
Hideaki Yoshifuji / 吉藤英明
5
11.63%
1
16.67%
David S. Miller
3
6.98%
1
16.67%
Eric Dumazet
1
2.33%
1
16.67%
Arnaldo Carvalho de Melo
1
2.33%
1
16.67%
Total
43
100.00%
6
100.00%



static void raw6_destroy(struct sock *sk)
{
	lock_sock(sk);
	ip6_flush_pending_frames(sk);
	release_sock(sk);

	inet6_destroy_sock(sk);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Denis V. Lunev
25
80.65%
1
33.33%
David S. Miller
4
12.90%
1
33.33%
Brian Haley
2
6.45%
1
33.33%
Total
31
100.00%
3
100.00%



static int rawv6_init_sk(struct sock *sk)
{
	struct raw6_sock *rp = raw6_sk(sk);

	switch (inet_sk(sk)->inet_num) {
	case IPPROTO_ICMPV6:
		rp->checksum = 1;
		rp->offset   = 2;
		break;
	case IPPROTO_MH:
		rp->checksum = 1;
		rp->offset   = 4;
		break;
	default:
		break;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masahide Nakamura
31
44.93%
1
20.00%
Alexey Kuznetsov
19
27.54%
1
20.00%
Linus Torvalds (pre-git)
14
20.29%
1
20.00%
Arnaldo Carvalho de Melo
4
5.80%
1
20.00%
Eric Dumazet
1
1.45%
1
20.00%
Total
69
100.00%
5
100.00%


struct proto rawv6_prot = {
	.name		   = "RAWv6",
	.owner		   = THIS_MODULE,
	.close		   = rawv6_close,
	.destroy	   = raw6_destroy,
	.connect	   = ip6_datagram_connect_v6_only,
	.disconnect	   = __udp_disconnect,
	.ioctl		   = rawv6_ioctl,
	.init		   = rawv6_init_sk,
	.setsockopt	   = rawv6_setsockopt,
	.getsockopt	   = rawv6_getsockopt,
	.sendmsg	   = rawv6_sendmsg,
	.recvmsg	   = rawv6_recvmsg,
	.bind		   = rawv6_bind,
	.backlog_rcv	   = rawv6_rcv_skb,
	.hash		   = raw_hash_sk,
	.unhash		   = raw_unhash_sk,
	.obj_size	   = sizeof(struct raw6_sock),
	.h.raw_hash	   = &raw_v6_hashinfo,
#ifdef CONFIG_COMPAT
	.compat_setsockopt = compat_rawv6_setsockopt,
	.compat_getsockopt = compat_rawv6_getsockopt,
	.compat_ioctl	   = compat_rawv6_ioctl,
#endif
	.diag_destroy	   = raw_abort,
};

#ifdef CONFIG_PROC_FS


static int raw6_seq_show(struct seq_file *seq, void *v)
{
	if (v == SEQ_START_TOKEN) {
		seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
	} else {
		struct sock *sp = v;
		__u16 srcp  = inet_sk(sp)->inet_num;
		ip6_dgram_sock_seq_show(seq, v, srcp, 0,
					raw_seq_private(seq)->bucket);
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Lorenzo Colitti
28
39.44%
1
16.67%
Hideaki Yoshifuji / 吉藤英明
22
30.99%
1
16.67%
Linus Torvalds (pre-git)
19
26.76%
2
33.33%
Joe Perches
1
1.41%
1
16.67%
Pavel Emelyanov
1
1.41%
1
16.67%
Total
71
100.00%
6
100.00%


static const struct seq_operations raw6_seq_ops = {
	.start =	raw_seq_start,
	.next =		raw_seq_next,
	.stop =		raw_seq_stop,
	.show =		raw6_seq_show,
};



static int raw6_seq_open(struct inode *inode, struct file *file)
{
	return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
20
66.67%
1
20.00%
Pavel Emelyanov
7
23.33%
3
60.00%
Denis V. Lunev
3
10.00%
1
20.00%
Total
30
100.00%
5
100.00%


static const struct file_operations raw6_seq_fops = {
	.owner =	THIS_MODULE,
	.open =		raw6_seq_open,
	.read =		seq_read,
	.llseek =	seq_lseek,
	.release =	seq_release_net,
};



static int __net_init raw6_init_net(struct net *net)
{
	if (!proc_create("raw6", S_IRUGO, net->proc_net, &raw6_seq_fops))
		return -ENOMEM;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
24
66.67%
2
40.00%
Pavel Emelyanov
6
16.67%
1
20.00%
Gao Feng
5
13.89%
1
20.00%
Alexey Dobriyan
1
2.78%
1
20.00%
Total
36
100.00%
5
100.00%



static void __net_exit raw6_exit_net(struct net *net)
{
	remove_proc_entry("raw6", net->proc_net);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
15
71.43%
1
33.33%
Gao Feng
5
23.81%
1
33.33%
Alexey Dobriyan
1
4.76%
1
33.33%
Total
21
100.00%
3
100.00%


static struct pernet_operations raw6_net_ops = {
	.init = raw6_init_net,
	.exit = raw6_exit_net,
};



int __init raw6_proc_init(void)
{
	return register_pernet_subsys(&raw6_net_ops);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%



void raw6_proc_exit(void)
{
	unregister_pernet_subsys(&raw6_net_ops);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
10
76.92%
1
33.33%
Pavel Emelyanov
2
15.38%
1
33.33%
Eric W. Biedermann
1
7.69%
1
33.33%
Total
13
100.00%
3
100.00%

#endif	/* CONFIG_PROC_FS */

/* Same as inet6_dgram_ops, sans udp_poll.  */

const struct proto_ops inet6_sockraw_ops = {
	.family		   = PF_INET6,
	.owner		   = THIS_MODULE,
	.release	   = inet6_release,
	.bind		   = inet6_bind,
	.connect	   = inet_dgram_connect,	/* ok           */
	.socketpair	   = sock_no_socketpair,	/* a do nothing */
	.accept		   = sock_no_accept,		/* a do nothing */
	.getname	   = inet6_getname,
	.poll		   = datagram_poll,		/* ok           */
	.ioctl		   = inet6_ioctl,		/* must change  */
	.listen		   = sock_no_listen,		/* ok           */
	.shutdown	   = inet_shutdown,		/* ok           */
	.setsockopt	   = sock_common_setsockopt,	/* ok           */
	.getsockopt	   = sock_common_getsockopt,	/* ok           */
	.sendmsg	   = inet_sendmsg,		/* ok           */
	.recvmsg	   = sock_common_recvmsg,	/* ok           */
	.mmap		   = sock_no_mmap,
	.sendpage	   = sock_no_sendpage,
#ifdef CONFIG_COMPAT
	.compat_setsockopt = compat_sock_common_setsockopt,
	.compat_getsockopt = compat_sock_common_getsockopt,
#endif
};


static struct inet_protosw rawv6_protosw = {
	.type		= SOCK_RAW,
	.protocol	= IPPROTO_IP,	/* wild card */
	.prot		= &rawv6_prot,
	.ops		= &inet6_sockraw_ops,
	.flags		= INET_PROTOSW_REUSE,
};



int __init rawv6_init(void)
{
	return inet6_register_protosw(&rawv6_protosw);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Daniel Lezcano
14
93.33%
1
50.00%
Julia Lawall
1
6.67%
1
50.00%
Total
15
100.00%
2
100.00%



void rawv6_exit(void)
{
	inet6_unregister_protosw(&rawv6_protosw);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Daniel Lezcano
13
100.00%
1
100.00%
Total
13
100.00%
1
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
2056
32.10%
21
8.71%
Kazunori Miyazawa
525
8.20%
3
1.24%
Dmitry Mishin
385
6.01%
1
0.41%
Hideaki Yoshifuji / 吉藤英明
381
5.95%
28
11.62%
David S. Miller
348
5.43%
19
7.88%
Pavel Emelyanov
340
5.31%
9
3.73%
Al Viro
275
4.29%
11
4.56%
Masahide Nakamura
247
3.86%
5
2.07%
Alexey Kuznetsov
239
3.73%
2
0.83%
Daniel Lezcano
189
2.95%
2
0.83%
Eric Dumazet
185
2.89%
17
7.05%
Arnaldo Carvalho de Melo
159
2.48%
17
7.05%
Herbert Xu
155
2.42%
8
3.32%
Hannes Frederic Sowa
134
2.09%
7
2.90%
Linus Torvalds
92
1.44%
5
2.07%
Brian Haley
66
1.03%
6
2.49%
Wei Wang
54
0.84%
1
0.41%
David Ahern
45
0.70%
2
0.83%
Lorenzo Colitti
42
0.66%
3
1.24%
Ville Nuorvala
35
0.55%
3
1.24%
Denis V. Lunev
35
0.55%
3
1.24%
Julian Anastasov
27
0.42%
1
0.41%
Wang Chen
24
0.37%
1
0.41%
Patrick McHardy
20
0.31%
4
1.66%
Andrew McDonald
20
0.31%
1
0.41%
Eric W. Biedermann
20
0.31%
5
2.07%
Rusty Russell
18
0.28%
1
0.41%
Dave Jones
18
0.28%
2
0.83%
Soheil Hassas Yeganeh
17
0.27%
2
0.83%
Heiko Carstens
16
0.25%
1
0.41%
Erich E. Hoover
16
0.25%
1
0.41%
Cyrill V. Gorcunov
15
0.23%
1
0.41%
Steffen Hurrle
14
0.22%
1
0.41%
Alexander Potapenko
14
0.22%
1
0.41%
Alexey Dobriyan
13
0.20%
3
1.24%
Tóth László Attila
13
0.20%
1
0.41%
Tom Herbert
12
0.19%
1
0.41%
Martin KaFai Lau
12
0.19%
1
0.41%
Gao Feng
10
0.16%
2
0.83%
Venkat Yekkirala
7
0.11%
1
0.41%
Duan Jiong
7
0.11%
2
0.83%
Neil Horman
7
0.11%
2
0.83%
Yasuyuki Kozakai
7
0.11%
1
0.41%
Werner Almesberger
7
0.11%
1
0.41%
Johannes Berg
7
0.11%
1
0.41%
Stephen Hemminger
6
0.09%
2
0.83%
Tetsuo Handa
6
0.09%
1
0.41%
Arnaud Ebalard
6
0.09%
1
0.41%
Fabian Frederick
5
0.08%
1
0.41%
Ian Morris
5
0.08%
1
0.41%
Robert P. J. Day
5
0.08%
1
0.41%
Himangi Saraogi
4
0.06%
1
0.41%
Gustavo A. R. Silva
4
0.06%
1
0.41%
Tejun Heo
3
0.05%
1
0.41%
Yang Hongyang
3
0.05%
1
0.41%
Joe Perches
3
0.05%
2
0.83%
Paul Gortmaker
3
0.05%
1
0.41%
Shirley Ma
3
0.05%
1
0.41%
Américo Wang
3
0.05%
1
0.41%
Jamie Bainbridge
2
0.03%
1
0.41%
David L Stevens
2
0.03%
1
0.41%
Tom Parkin
2
0.03%
1
0.41%
Maciej Żenczykowski
2
0.03%
1
0.41%
Thomas Graf
1
0.02%
1
0.41%
Suresh Krishnan
1
0.02%
1
0.41%
Adrian Bunk
1
0.02%
1
0.41%
Nicolas Dichtel
1
0.02%
1
0.41%
Philippe De Muyter
1
0.02%
1
0.41%
Julia Lawall
1
0.02%
1
0.41%
Jan Engelhardt
1
0.02%
1
0.41%
Arjan van de Ven
1
0.02%
1
0.41%
Alex W Slater
1
0.02%
1
0.41%
Stephen Rothwell
1
0.02%
1
0.41%
Total
6405
100.00%
241
100.00%
Directory: net/ipv6

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