Release 4.11 net/ipv6/icmp.c

/*
 *      Internet Control Message Protocol (ICMPv6)
 *      Linux INET6 implementation
 *
 *      Authors:
 *      Pedro Roque             <roque@di.fc.ul.pt>
 *
 *      Based on net/ipv4/icmp.c
 *
 *      RFC 1885
 *
 *      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.
 */

/*
 *      Changes:
 *
 *      Andi Kleen              :       exception handling
 *      Andi Kleen                      add rate limits. never reply to a icmp.
 *                                      add more length checks and other fixes.
 *      yoshfuji                :       ensure to sent parameter problem for
 *                                      fragments.
 *      YOSHIFUJI Hideaki @USAGI:       added sysctl for icmp rate limit.
 *      Randy Dunlap and
 *      YOSHIFUJI Hideaki @USAGI:       Per-interface statistics support
 *      Kazunori MIYAZAWA @USAGI:       change output process to use ip6_append_data
 */


#define pr_fmt(fmt) "IPv6: " fmt

#include <linux/module.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/netfilter.h>
#include <linux/slab.h>

#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif

#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/icmpv6.h>

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

#include <net/ipv6.h>
#include <net/ip6_checksum.h>
#include <net/ping.h>
#include <net/protocol.h>
#include <net/raw.h>
#include <net/rawv6.h>
#include <net/transp_v6.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <net/icmp.h>
#include <net/xfrm.h>
#include <net/inet_common.h>
#include <net/dsfield.h>
#include <net/l3mdev.h>

#include <linux/uaccess.h>

/*
 *      The ICMP socket(s). This is the most convenient way to flow control
 *      our ICMP output as well as maintain a clean interface throughout
 *      all layers. All Socketless IP sends will soon be gone.
 *
 *      On SMP we have one ICMP socket per-cpu.
 */


static inline struct sock *icmpv6_sk(struct net *net)
{
	return net->ipv6.icmp_sk[smp_processor_id()];
}

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static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
		       u8 type, u8 code, int offset, __be32 info)
{
	/* icmpv6_notify checks 8 bytes can be pulled, icmp6hdr is 8 bytes */
	struct icmp6hdr *icmp6 = (struct icmp6hdr *) (skb->data + offset);
	struct net *net = dev_net(skb->dev);

	if (type == ICMPV6_PKT_TOOBIG)
		ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
	else if (type == NDISC_REDIRECT)
		ip6_redirect(skb, net, skb->dev->ifindex, 0,
			     sock_net_uid(net, NULL));

	if (!(type & ICMPV6_INFOMSG_MASK))
		if (icmp6->icmp6_type == ICMPV6_ECHO_REQUEST)
			ping_err(skb, offset, ntohl(info));
}

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static int icmpv6_rcv(struct sk_buff *skb);


static const struct inet6_protocol icmpv6_protocol = {
	.handler	=	icmpv6_rcv,
	.err_handler	=	icmpv6_err,
	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
};

/* Called with BH disabled */

static __inline__ struct sock *icmpv6_xmit_lock(struct net *net)
{
        struct sock *sk;

	sk = icmpv6_sk(net);
	if (unlikely(!spin_trylock(&sk->sk_lock.slock))) {
		/* This can happen if the output path (f.e. SIT or
                 * ip6ip6 tunnel) signals dst_link_failure() for an
                 * outgoing ICMP6 packet.
                 */
		return NULL;
	}
	return sk;

}

static 
__inline__ void icmpv6_xmit_unlock(struct sock *sk)
{
	spin_unlock(&sk->sk_lock.slock);
}

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David S. Miller
2
9.09%
1
16.67%
Jesper Dangaard Brouer
1
4.55%
1
16.67%
Arnaldo Carvalho de Melo
1
4.55%
1
16.67%
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22
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6
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/*
 * Figure out, may we reply to this packet with icmp error.
 *
 * We do not reply, if:
 *      - it was icmp error message.
 *      - it is truncated, so that it is known, that protocol is ICMPV6
 *        (i.e. in the middle of some exthdr)
 *
 *      --ANK (980726)
 */



static bool is_ineligible(const struct sk_buff *skb)
{
	int ptr = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
	int len = skb->len - ptr;
	__u8 nexthdr = ipv6_hdr(skb)->nexthdr;
	__be16 frag_off;

	if (len < 0)
		return true;

	ptr = ipv6_skip_exthdr(skb, ptr, &nexthdr, &frag_off);
	if (ptr < 0)
		return false;
	if (nexthdr == IPPROTO_ICMPV6) {
		u8 _type, *tp;
		tp = skb_header_pointer(skb,
			ptr+offsetof(struct icmp6hdr, icmp6_type),
			sizeof(_type), &_type);
		if (!tp || !(*tp & ICMPV6_INFOMSG_MASK))
			return true;
	}
	return false;
}

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11.11%
David S. Miller
19
13.10%
1
11.11%
Jesse Gross
6
4.14%
1
11.11%
Arnaldo Carvalho de Melo
6
4.14%
1
11.11%
Eric Dumazet
6
4.14%
1
11.11%
Ian Morris
1
0.69%
1
11.11%
Hideaki Yoshifuji / 吉藤英明
1
0.69%
1
11.11%
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145
100.00%
9
100.00%



static bool icmpv6_mask_allow(int type)
{
	/* Informational messages are not limited. */
	if (type & ICMPV6_INFOMSG_MASK)
		return true;

	/* Do not limit pmtu discovery, it would break it. */
	if (type == ICMPV6_PKT_TOOBIG)
		return true;

	return false;
}

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static bool icmpv6_global_allow(int type)
{
	if (icmpv6_mask_allow(type))
		return true;

	if (icmp_global_allow())
		return true;

	return false;
}

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/*
 * Check the ICMP output rate limit
 */


static bool icmpv6_xrlim_allow(struct sock *sk, u8 type,
			       struct flowi6 *fl6)
{
	struct net *net = sock_net(sk);
	struct dst_entry *dst;
	bool res = false;

	if (icmpv6_mask_allow(type))
		return true;

	/*
         * Look up the output route.
         * XXX: perhaps the expire for routing entries cloned by
         * this lookup should be more aggressive (not longer than timeout).
         */
	dst = ip6_route_output(net, sk, fl6);
	if (dst->error) {
		IP6_INC_STATS(net, ip6_dst_idev(dst),
			      IPSTATS_MIB_OUTNOROUTES);
	} else if (dst->dev && (dst->dev->flags&IFF_LOOPBACK)) {
		res = true;
	} else {
		struct rt6_info *rt = (struct rt6_info *)dst;
		int tmo = net->ipv6.sysctl.icmpv6_time;
		struct inet_peer *peer;

		/* Give more bandwidth to wider prefixes. */
		if (rt->rt6i_dst.plen < 128)
			tmo >>= ((128 - rt->rt6i_dst.plen)>>5);

		peer = inet_getpeer_v6(net->ipv6.peers, &fl6->daddr, 1);
		res = inet_peer_xrlim_allow(peer, tmo);
		if (peer)
			inet_putpeer(peer);
	}
	dst_release(dst);
	return res;
}

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Hideaki Yoshifuji / 吉藤英明
10
4.85%
4
20.00%
Benjamin Thery
9
4.37%
1
5.00%
Jesper Dangaard Brouer
8
3.88%
1
5.00%
Daniel Lezcano
6
2.91%
2
10.00%
Eric Dumazet
5
2.43%
1
5.00%
Martin KaFai Lau
2
0.97%
1
5.00%
Denis V. Lunev
2
0.97%
1
5.00%
Brian Haley
1
0.49%
1
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20
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/*
 *      an inline helper for the "simple" if statement below
 *      checks if parameter problem report is caused by an
 *      unrecognized IPv6 option that has the Option Type
 *      highest-order two bits set to 10
 */



static bool opt_unrec(struct sk_buff *skb, __u32 offset)
{
	u8 _optval, *op;

	offset += skb_network_offset(skb);
	op = skb_header_pointer(skb, offset, sizeof(_optval), &_optval);
	if (!op)
		return true;
	return (*op & 0xC0) == 0x80;
}

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30.65%
1
14.29%
Linus Torvalds
14
22.58%
1
14.29%
Arnaldo Carvalho de Melo
3
4.84%
1
14.29%
Eric Dumazet
2
3.23%
1
14.29%
Ian Morris
1
1.61%
1
14.29%
Total
62
100.00%
7
100.00%



int icmpv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
			       struct icmp6hdr *thdr, int len)
{
	struct sk_buff *skb;
	struct icmp6hdr *icmp6h;
	int err = 0;

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

	icmp6h = icmp6_hdr(skb);
	memcpy(icmp6h, thdr, sizeof(struct icmp6hdr));
	icmp6h->icmp6_cksum = 0;

	if (skb_queue_len(&sk->sk_write_queue) == 1) {
		skb->csum = csum_partial(icmp6h,
					sizeof(struct icmp6hdr), skb->csum);
		icmp6h->icmp6_cksum = csum_ipv6_magic(&fl6->saddr,
						      &fl6->daddr,
						      len, fl6->flowi6_proto,
						      skb->csum);
	} else {
		__wsum tmp_csum = 0;

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

		tmp_csum = csum_partial(icmp6h,
					sizeof(struct icmp6hdr), tmp_csum);
		icmp6h->icmp6_cksum = csum_ipv6_magic(&fl6->saddr,
						      &fl6->daddr,
						      len, fl6->flowi6_proto,
						      tmp_csum);
	}
	ip6_push_pending_frames(sk);
out:
	return err;
}

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22
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2
20.00%
David S. Miller
18
8.22%
2
20.00%
Arnaldo Carvalho de Melo
6
2.74%
2
20.00%
Ian Morris
5
2.28%
2
20.00%
Al Viro
4
1.83%
1
10.00%
Total
219
100.00%
10
100.00%


struct icmpv6_msg {
	
struct sk_buff	*skb;
	
int		offset;
	
uint8_t		type;
};



static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb)
{
	struct icmpv6_msg *msg = (struct icmpv6_msg *) from;
	struct sk_buff *org_skb = msg->skb;
	__wsum csum = 0;

	csum = skb_copy_and_csum_bits(org_skb, msg->offset + offset,
				      to, len, csum);
	skb->csum = csum_block_add(skb->csum, csum, odd);
	if (!(msg->type & ICMPV6_INFOMSG_MASK))
		nf_ct_attach(skb, org_skb);
	return 0;
}

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14.68%
1
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Al Viro
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4
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#if IS_ENABLED(CONFIG_IPV6_MIP6)


static void mip6_addr_swap(struct sk_buff *skb)
{
	struct ipv6hdr *iph = ipv6_hdr(skb);
	struct inet6_skb_parm *opt = IP6CB(skb);
	struct ipv6_destopt_hao *hao;
	struct in6_addr tmp;
	int off;

	if (opt->dsthao) {
		off = ipv6_find_tlv(skb, opt->dsthao, IPV6_TLV_HAO);
		if (likely(off >= 0)) {
			hao = (struct ipv6_destopt_hao *)
					(skb_network_header(skb) + off);
			tmp = iph->saddr;
			iph->saddr = hao->addr;
			hao->addr = tmp;
		}
	}
}
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3
2.70%
1
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4
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#else


static inline void mip6_addr_swap(struct sk_buff *skb) {}
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#endif



static struct dst_entry *icmpv6_route_lookup(struct net *net,
					     struct sk_buff *skb,
					     struct sock *sk,
					     struct flowi6 *fl6)
{
	struct dst_entry *dst, *dst2;
	struct flowi6 fl2;
	int err;

	err = ip6_dst_lookup(net, sk, &dst, fl6);
	if (err)
		return ERR_PTR(err);

	/*
         * We won't send icmp if the destination is known
         * anycast.
         */
	if (ipv6_anycast_destination(dst, &fl6->daddr)) {
		net_dbg_ratelimited("icmp6_send: acast source\n");
		dst_release(dst);
		return ERR_PTR(-EINVAL);
	}

	/* No need to clone since we're just using its address. */
	dst2 = dst;

	dst = xfrm_lookup(net, dst, flowi6_to_flowi(fl6), sk, 0);
	if (!IS_ERR(dst)) {
		if (dst != dst2)
			return dst;
	} else {
		if (PTR_ERR(dst) == -EPERM)
			dst = NULL;
		else
			return dst;
	}

	err = xfrm_decode_session_reverse(skb, flowi6_to_flowi(&fl2), AF_INET6);
	if (err)
		goto relookup_failed;

	err = ip6_dst_lookup(net, sk, &dst2, &fl2);
	if (err)
		goto relookup_failed;

	dst2 = xfrm_lookup(net, dst2, flowi6_to_flowi(&fl2), sk, XFRM_LOOKUP_ICMP);
	if (!IS_ERR(dst2)) {
		dst_release(dst);
		dst = dst2;
	} else {
		err = PTR_ERR(dst2);
		if (err == -EPERM) {
			dst_release(dst);
			return dst2;
		} else
			goto relookup_failed;
	}

relookup_failed:
	if (dst)
		return dst;
	return ERR_PTR(err);
}

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4
1.38%
1
12.50%
Pravin B Shelar
1
0.34%
1
12.50%
Stephen Hemminger
1
0.34%
1
12.50%
Joe Perches
1
0.34%
1
12.50%
Total
290
100.00%
8
100.00%

/*
 *      Send an ICMP message in response to a packet in error
 */


static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
		       const struct in6_addr *force_saddr)
{
	struct net *net = dev_net(skb->dev);
	struct inet6_dev *idev = NULL;
	struct ipv6hdr *hdr = ipv6_hdr(skb);
	struct sock *sk;
	struct ipv6_pinfo *np;
	const struct in6_addr *saddr = NULL;
	struct dst_entry *dst;
	struct icmp6hdr tmp_hdr;
	struct flowi6 fl6;
	struct icmpv6_msg msg;
	struct sockcm_cookie sockc_unused = {0};
	struct ipcm6_cookie ipc6;
	int iif = 0;
	int addr_type = 0;
	int len;
	int err = 0;
	u32 mark = IP6_REPLY_MARK(net, skb->mark);

	if ((u8 *)hdr < skb->head ||
	    (skb_network_header(skb) + sizeof(*hdr)) > skb_tail_pointer(skb))
		return;

	/*
         *      Make sure we respect the rules
         *      i.e. RFC 1885 2.4(e)
         *      Rule (e.1) is enforced by not using icmp6_send
         *      in any code that processes icmp errors.
         */
	addr_type = ipv6_addr_type(&hdr->daddr);

	if (ipv6_chk_addr(net, &hdr->daddr, skb->dev, 0) ||
	    ipv6_chk_acast_addr_src(net, skb->dev, &hdr->daddr))
		saddr = &hdr->daddr;

	/*
         *      Dest addr check
         */

	if (addr_type & IPV6_ADDR_MULTICAST || skb->pkt_type != PACKET_HOST) {
		if (type != ICMPV6_PKT_TOOBIG &&
		    !(type == ICMPV6_PARAMPROB &&
		      code == ICMPV6_UNK_OPTION &&
		      (opt_unrec(skb, info))))
			return;

		saddr = NULL;
	}

	addr_type = ipv6_addr_type(&hdr->saddr);

	/*
         *      Source addr check
         */

	if (__ipv6_addr_needs_scope_id(addr_type))
		iif = skb->dev->ifindex;
	else {
		dst = skb_dst(skb);
		iif = l3mdev_master_ifindex(dst ? dst->dev : skb->dev);
	}

	/*
         *      Must not send error if the source does not uniquely
         *      identify a single node (RFC2463 Section 2.4).
         *      We check unspecified / multicast addresses here,
         *      and anycast addresses will be checked later.
         */
	if ((addr_type == IPV6_ADDR_ANY) || (addr_type & IPV6_ADDR_MULTICAST)) {
		net_dbg_ratelimited("icmp6_send: addr_any/mcast source [%pI6c > %pI6c]\n",
				    &hdr->saddr, &hdr->daddr);
		return;
	}

	/*
         *      Never answer to a ICMP packet.
         */
	if (is_ineligible(skb)) {
		net_dbg_ratelimited("icmp6_send: no reply to icmp error [%pI6c > %pI6c]\n",
				    &hdr->saddr, &hdr->daddr);
		return;
	}

	/* Needed by both icmp_global_allow and icmpv6_xmit_lock */
	local_bh_disable();

	/* Check global sysctl_icmp_msgs_per_sec ratelimit */
	if (!icmpv6_global_allow(type))
		goto out_bh_enable;

	mip6_addr_swap(skb);

	memset(&fl6, 0, sizeof(fl6));
	fl6.flowi6_proto = IPPROTO_ICMPV6;
	fl6.daddr = hdr->saddr;
	if (force_saddr)
		saddr = force_saddr;
	if (saddr)
		fl6.saddr = *saddr;
	fl6.flowi6_mark = mark;
	fl6.flowi6_oif = iif;
	fl6.fl6_icmp_type = type;
	fl6.fl6_icmp_code = code;
	fl6.flowi6_uid = sock_net_uid(net, NULL);
	security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));

	sk = icmpv6_xmit_lock(net);
	if (!sk)
		goto out_bh_enable;

	sk->sk_mark = mark;
	np = inet6_sk(sk);

	if (!icmpv6_xrlim_allow(sk, type, &fl6))
		goto out;

	tmp_hdr.icmp6_type = type;
	tmp_hdr.icmp6_code = code;
	tmp_hdr.icmp6_cksum = 0;
	tmp_hdr.icmp6_pointer = htonl(info);

	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;

	ipc6.tclass = np->tclass;
	fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);

	dst = icmpv6_route_lookup(net, skb, sk, &fl6);
	if (IS_ERR(dst))
		goto out;

	ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
	ipc6.dontfrag = np->dontfrag;
	ipc6.opt = NULL;

	msg.skb = skb;
	msg.offset = skb_network_offset(skb);
	msg.type = type;

	len = skb->len - msg.offset;
	len = min_t(unsigned int, len, IPV6_MIN_MTU - sizeof(struct ipv6hdr) - sizeof(struct icmp6hdr));
	if (len < 0) {
		net_dbg_ratelimited("icmp: len problem [%pI6c > %pI6c]\n",
				    &hdr->saddr, &hdr->daddr);
		goto out_dst_release;
	}

	rcu_read_lock();
	idev = __in6_dev_get(skb->dev);

	err = ip6_append_data(sk, icmpv6_getfrag, &msg,
			      len + sizeof(struct icmp6hdr),
			      sizeof(struct icmp6hdr),
			      &ipc6, &fl6, (struct rt6_info *)dst,
			      MSG_DONTWAIT, &sockc_unused);
	if (err) {
		ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTERRORS);
		ip6_flush_pending_frames(sk);
	} else {
		err = icmpv6_push_pending_frames(sk, &fl6, &tmp_hdr,
						 len + sizeof(struct icmp6hdr));
	}
	rcu_read_unlock();
out_dst_release:
	dst_release(dst);
out:
	icmpv6_xmit_unlock(sk);
out_bh_enable:
	local_bh_enable();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
237
27.65%
7
9.72%
Kazunori Miyazawa
160
18.67%
1
1.39%
David S. Miller
75
8.75%
7
9.72%
Lorenzo Colitti
41
4.78%
3
4.17%
Björn Mork
33
3.85%
1
1.39%
Eric Dumazet
32
3.73%
5
6.94%
Hannes Frederic Sowa
27
3.15%
3
4.17%
David Ahern
25
2.92%
3
4.17%
Jesper Dangaard Brouer
24
2.80%
2
2.78%
Wei Wang
22
2.57%
1
1.39%
Hideaki Yoshifuji / 吉藤英明
21
2.45%
7
9.72%
Herbert Xu
16
1.87%
1
1.39%
Erich E. Hoover
16
1.87%
1
1.39%
François-Xavier Le Bail
14
1.63%
2
2.78%
Linus Torvalds
12
1.40%
3
4.17%
Arnaldo Carvalho de Melo
11
1.28%
3
4.17%
Benjamin Thery
11
1.28%
1
1.39%
Soheil Hassas Yeganeh
10
1.17%
1
1.39%
Denis V. Lunev
10
1.17%
3
4.17%
Randy Dunlap
9
1.05%
1
1.39%
Venkat Yekkirala
7
0.82%
1
1.39%
Simon Horman
6
0.70%
1
1.39%
Yasuyuki Kozakai
6
0.70%
1
1.39%
Alexey Dobriyan
5
0.58%
2
2.78%
Masahide Nakamura
5
0.58%
1
1.39%
Jan Oravec
4
0.47%
1
1.39%
Brian Haley
3
0.35%
2
2.78%
Joe Perches
3
0.35%
1
1.39%
Andi Kleen
3
0.35%
1
1.39%
Pravin B Shelar
3
0.35%
1
1.39%
Ville Nuorvala
2
0.23%
1
1.39%
Ian Morris
2
0.23%
2
2.78%
Daniel Lezcano
2
0.23%
1
1.39%
Total
857
100.00%
72
100.00%

/* Slightly more convenient version of icmp6_send.
 */


void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
{
	icmp6_send(skb, ICMPV6_PARAMPROB, code, pos, NULL);
	kfree_skb(skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pravin B Shelar
29
85.29%
1
33.33%
Hideaki Yoshifuji / 吉藤英明
3
8.82%
1
33.33%
Eric Dumazet
2
5.88%
1
33.33%
Total
34
100.00%
3
100.00%

/* Generate icmpv6 with type/code ICMPV6_DEST_UNREACH/ICMPV6_ADDR_UNREACH
 * if sufficient data bytes are available
 * @nhs is the size of the tunnel header(s) :
 *  Either an IPv4 header for SIT encap
 *         an IPv4 header + GRE header for GRE encap
 */


int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type,
			       unsigned int data_len)
{
	struct in6_addr temp_saddr;
	struct rt6_info *rt;
	struct sk_buff *skb2;
	u32 info = 0;

	if (!pskb_may_pull(skb, nhs + sizeof(struct ipv6hdr) + 8))
		return 1;

	/* RFC 4884 (partial) support for ICMP extensions */
	if (data_len < 128 || (data_len & 7) || skb->len < data_len)
		data_len = 0;

	skb2 = data_len ? skb_copy(skb, GFP_ATOMIC) : skb_clone(skb, GFP_ATOMIC);

	if (!skb2)
		return 1;

	skb_dst_drop(skb2);
	skb_pull(skb2, nhs);
	skb_reset_network_header(skb2);

	rt = rt6_lookup(dev_net(skb->dev), &ipv6_hdr(skb2)->saddr, NULL, 0, 0);

	if (rt && rt->dst.dev)
		skb2->dev = rt->dst.dev;

	ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr, &temp_saddr);

	if (data_len) {
		/* RFC 4884 (partial) support :
                 * insert 0 padding at the end, before the extensions
                 */
		__skb_push(skb2, nhs);
		skb_reset_network_header(skb2);
		memmove(skb2->data, skb2->data + nhs, data_len - nhs);
		memset(skb2->data + data_len - nhs, 0, nhs);
		/* RFC 4884 4.5 : Length is measured in 64-bit words,
                 * and stored in reserved[0]
                 */
		info = (data_len/8) << 24;
	}
	if (type == ICMP_TIME_EXCEEDED)
		icmp6_send(skb2, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
			   info, &temp_saddr);
	else
		icmp6_send(skb2, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH,
			   info, &temp_saddr);
	if (rt)
		ip6_rt_put(rt);

	kfree_skb(skb2);

	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Dumazet
299
100.00%
3
100.00%
Total
299
100.00%
3
100.00%


EXPORT_SYMBOL(ip6_err_gen_icmpv6_unreach);



static void icmpv6_echo_reply(struct sk_buff *skb)
{
	struct net *net = dev_net(skb->dev);
	struct sock *sk;
	struct inet6_dev *idev;
	struct ipv6_pinfo *np;
	const struct in6_addr *saddr = NULL;
	struct icmp6hdr *icmph = icmp6_hdr(skb);
	struct icmp6hdr tmp_hdr;
	struct flowi6 fl6;
	struct icmpv6_msg msg;
	struct dst_entry *dst;
	struct ipcm6_cookie ipc6;
	int err = 0;
	u32 mark = IP6_REPLY_MARK(net, skb->mark);
	struct sockcm_cookie sockc_unused = {0};

	saddr = &ipv6_hdr(skb)->daddr;

	if (!ipv6_unicast_destination(skb) &&
	    !(net->ipv6.sysctl.anycast_src_echo_reply &&
	      ipv6_anycast_destination(skb_dst(skb), saddr)))
		saddr = NULL;

	memcpy(&tmp_hdr, icmph, sizeof(tmp_hdr));
	tmp_hdr.icmp6_type = ICMPV6_ECHO_REPLY;

	memset(&fl6, 0, sizeof(fl6));
	fl6.flowi6_proto = IPPROTO_ICMPV6;
	fl6.daddr = ipv6_hdr(skb)->saddr;
	if (saddr)
		fl6.saddr = *saddr;
	fl6.flowi6_oif = skb->dev->ifindex;
	fl6.fl6_icmp_type = ICMPV6_ECHO_REPLY;
	fl6.flowi6_mark = mark;
	fl6.flowi6_uid = sock_net_uid(net, NULL);
	security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));

	local_bh_disable();
	sk = icmpv6_xmit_lock(net);
	if (!sk)
		goto out_bh_enable;
	sk->sk_mark = mark;
	np = inet6_sk(sk);

	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;

	err = ip6_dst_lookup(net, sk, &dst, &fl6);
	if (err)
		goto out;
	dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), sk, 0);
	if (IS_ERR(dst))
		goto out;

	idev = __in6_dev_get(skb->dev);

	msg.skb = skb;
	msg.offset = 0;
	msg.type = ICMPV6_ECHO_REPLY;

	ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
	ipc6.tclass = ipv6_get_dsfield(ipv6_hdr(skb));
	ipc6.dontfrag = np->dontfrag;
	ipc6.opt = NULL;

	err = ip6_append_data(sk, icmpv6_getfrag, &msg, skb->len + sizeof(struct icmp6hdr),
				sizeof(struct icmp6hdr), &ipc6, &fl6,
				(struct rt6_info *)dst, MSG_DONTWAIT,
				&sockc_unused);

	if (err) {
		__ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTERRORS);
		ip6_flush_pending_frames(sk);
	} else {
		err = icmpv6_push_pending_frames(sk, &fl6, &tmp_hdr,
						 skb->len + sizeof(struct icmp6hdr));
	}
	dst_release(dst);
out:
	icmpv6_xmit_unlock(sk);
out_bh_enable:
	local_bh_enable();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kazunori Miyazawa
131
23.99%
1
2.13%
David S. Miller
79
14.47%
6
12.77%
Linus Torvalds (pre-git)
75
13.74%
2
4.26%
Wei Wang
36
6.59%
1
2.13%
Lorenzo Colitti
35
6.41%
2
4.26%
Hideaki Yoshifuji / 吉藤英明
27
4.95%
3
6.38%
François-Xavier Le Bail
16
2.93%
2
4.26%
Erich E. Hoover
16
2.93%
1
2.13%
Eric Dumazet
14
2.56%
5
10.64%
Randy Dunlap
13
2.38%
1
2.13%
Jesper Dangaard Brouer
11
2.01%
1
2.13%
Soheil Hassas Yeganeh
10
1.83%
1
2.13%
Hannes Frederic Sowa
10
1.83%
1
2.13%
Benjamin Thery
10
1.83%
1
2.13%
Denis V. Lunev
10
1.83%
3
6.38%
Arnaldo Carvalho de Melo
9
1.65%
2
4.26%
Venkat Yekkirala
7
1.28%
1
2.13%
Yasuyuki Kozakai
6
1.10%
1
2.13%
Ville Nuorvala
5
0.92%
1
2.13%
Martin KaFai Lau
5
0.92%
1
2.13%
Alexey Dobriyan
5
0.92%
2
4.26%
Linus Torvalds
4
0.73%
1
2.13%
Alexey Kuznetsov
3
0.55%
1
2.13%
Roopa Prabhu
2
0.37%
1
2.13%
David L Stevens
2
0.37%
1
2.13%
David Ahern
2
0.37%
1
2.13%
Ian Morris
1
0.18%
1
2.13%
Brian Haley
1
0.18%
1
2.13%
Patrick McHardy
1
0.18%
1
2.13%
Total
546
100.00%
47
100.00%



void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info)
{
	const struct inet6_protocol *ipprot;
	int inner_offset;
	__be16 frag_off;
	u8 nexthdr;
	struct net *net = dev_net(skb->dev);

	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
		goto out;

	nexthdr = ((struct ipv6hdr *)skb->data)->nexthdr;
	if (ipv6_ext_hdr(nexthdr)) {
		/* now skip over extension headers */
		inner_offset = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr),
						&nexthdr, &frag_off);
		if (inner_offset < 0)
			goto out;
	} else {
		inner_offset = sizeof(struct ipv6hdr);
	}

	/* Checkin header including 8 bytes of inner protocol header. */
	if (!pskb_may_pull(skb, inner_offset+8))
		goto out;

	/* BUGGG_FUTURE: we should try to parse exthdrs in this packet.
           Without this we will not able f.e. to make source routed
           pmtu discovery.
           Corresponding argument (opt) to notifiers is already added.
           --ANK (980726)
         */

	ipprot = rcu_dereference(inet6_protos[nexthdr]);
	if (ipprot && ipprot->err_handler)
		ipprot->err_handler(skb, NULL, type, code, inner_offset, info);

	raw6_icmp_error(skb, nexthdr, type, code, inner_offset, info);
	return;

out:
	__ICMP6_INC_STATS(net, __in6_dev_get(skb->dev), ICMP6_MIB_INERRORS);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
86
40.76%
7
36.84%
Linus Torvalds
70
33.18%
1
5.26%
Duan Jiong
37
17.54%
1
5.26%
David S. Miller
4
1.90%
2
10.53%
Jesse Gross
3
1.42%
1
5.26%
Dipankar Sarma
3
1.42%
1
5.26%
Pavel Emelyanov
2
0.95%
1
5.26%
Brian Haley
2
0.95%
1
5.26%
Al Viro
1
0.47%
1
5.26%
Eric Dumazet
1
0.47%
1
5.26%
Stephen Hemminger
1
0.47%
1
5.26%
Alexey Dobriyan
1
0.47%
1
5.26%
Total
211
100.00%
19
100.00%

/*
 *      Handle icmp messages
 */



static int icmpv6_rcv(struct sk_buff *skb)
{
	struct net_device *dev = skb->dev;
	struct inet6_dev *idev = __in6_dev_get(dev);
	const struct in6_addr *saddr, *daddr;
	struct icmp6hdr *hdr;
	u8 type;
	bool success = false;

	if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
		struct sec_path *sp = skb_sec_path(skb);
		int nh;

		if (!(sp && sp->xvec[sp->len - 1]->props.flags &
				 XFRM_STATE_ICMP))
			goto drop_no_count;

		if (!pskb_may_pull(skb, sizeof(*hdr) + sizeof(struct ipv6hdr)))
			goto drop_no_count;

		nh = skb_network_offset(skb);
		skb_set_network_header(skb, sizeof(*hdr));

		if (!xfrm6_policy_check_reverse(NULL, XFRM_POLICY_IN, skb))
			goto drop_no_count;

		skb_set_network_header(skb, nh);
	}

	__ICMP6_INC_STATS(dev_net(dev), idev, ICMP6_MIB_INMSGS);

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

	if (skb_checksum_validate(skb, IPPROTO_ICMPV6, ip6_compute_pseudo)) {
		net_dbg_ratelimited("ICMPv6 checksum failed [%pI6c > %pI6c]\n",
				    saddr, daddr);
		goto csum_error;
	}

	if (!pskb_pull(skb, sizeof(*hdr)))
		goto discard_it;

	hdr = icmp6_hdr(skb);

	type = hdr->icmp6_type;

	ICMP6MSGIN_INC_STATS(dev_net(dev), idev, type);

	switch (type) {
	case ICMPV6_ECHO_REQUEST:
		icmpv6_echo_reply(skb);
		break;

	case ICMPV6_ECHO_REPLY:
		success = ping_rcv(skb);
		break;

	case ICMPV6_PKT_TOOBIG:
		/* BUGGG_FUTURE: if packet contains rthdr, we cannot update
                   standard destination cache. Seems, only "advanced"
                   destination cache will allow to solve this problem
                   --ANK (980726)
                 */
		if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
			goto discard_it;
		hdr = icmp6_hdr(skb);

		/*
                 *      Drop through to notify
                 */

	case ICMPV6_DEST_UNREACH:
	case ICMPV6_TIME_EXCEED:
	case ICMPV6_PARAMPROB:
		icmpv6_notify(skb, type, hdr->icmp6_code, hdr->icmp6_mtu);
		break;

	case NDISC_ROUTER_SOLICITATION:
	case NDISC_ROUTER_ADVERTISEMENT:
	case NDISC_NEIGHBOUR_SOLICITATION:
	case NDISC_NEIGHBOUR_ADVERTISEMENT:
	case NDISC_REDIRECT:
		ndisc_rcv(skb);
		break;

	case ICMPV6_MGM_QUERY:
		igmp6_event_query(skb);
		break;

	case ICMPV6_MGM_REPORT:
		igmp6_event_report(skb);
		break;

	case ICMPV6_MGM_REDUCTION:
	case ICMPV6_NI_QUERY:
	case ICMPV6_NI_REPLY:
	case ICMPV6_MLD2_REPORT:
	case ICMPV6_DHAAD_REQUEST:
	case ICMPV6_DHAAD_REPLY:
	case ICMPV6_MOBILE_PREFIX_SOL:
	case ICMPV6_MOBILE_PREFIX_ADV:
		break;

	default:
		/* informational */
		if (type & ICMPV6_INFOMSG_MASK)
			break;

		net_dbg_ratelimited("icmpv6: msg of unknown type [%pI6c > %pI6c]\n",
				    saddr, daddr);

		/*
                 * error of unknown type.
                 * must pass to upper level
                 */

		icmpv6_notify(skb, type, hdr->icmp6_code, hdr->icmp6_mtu);
	}

	/* until the v6 path can be better sorted assume failure and
         * preserve the status quo behaviour for the rest of the paths to here
         */
	if (success)
		consume_skb(skb);
	else
		kfree_skb(skb);

	return 0;

csum_error:
	__ICMP6_INC_STATS(dev_net(dev), idev, ICMP6_MIB_CSUMERRORS);
discard_it:
	__ICMP6_INC_STATS(dev_net(dev), idev, ICMP6_MIB_INERRORS);
drop_no_count:
	kfree_skb(skb);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
192
38.17%
8
19.51%
Herbert Xu
118
23.46%
5
12.20%
Linus Torvalds
53
10.54%
1
2.44%
Hideaki Yoshifuji / 吉藤英明
26
5.17%
6
14.63%
Eric Dumazet
19
3.78%
4
9.76%
Rick Jones
18
3.58%
1
2.44%
Randy Dunlap
16
3.18%
1
2.44%
Denis V. Lunev
15
2.98%
2
4.88%
Arnaldo Carvalho de Melo
12
2.39%
2
4.88%
Alexey Dobriyan
10
1.99%
1
2.44%
Lorenzo Colitti
6
1.19%
1
2.44%
David S. Miller
5
0.99%
2
4.88%
Björn Mork
5
0.99%
1
2.44%
Tom Herbert
2
0.40%
1
2.44%
Joe Perches
2
0.40%
1
2.44%
Ravikiran G. Thirumalai
1
0.20%
1
2.44%
Andi Kleen
1
0.20%
1
2.44%
Brian Haley
1
0.20%
1
2.44%
Stephen Rothwell
1
0.20%
1
2.44%
Total
503
100.00%
41
100.00%



void icmpv6_flow_init(struct sock *sk, struct flowi6 *fl6,
		      u8 type,
		      const struct in6_addr *saddr,
		      const struct in6_addr *daddr,
		      int oif)
{
	memset(fl6, 0, sizeof(*fl6));
	fl6->saddr = *saddr;
	fl6->daddr = *daddr;
	fl6->flowi6_proto	= IPPROTO_ICMPV6;
	fl6->fl6_icmp_type	= type;
	fl6->fl6_icmp_code	= 0;
	fl6->flowi6_oif		= oif;
	security_sk_classify_flow(sk, flowi6_to_flowi(fl6));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
70
74.47%
1
25.00%
David S. Miller
20
21.28%
2
50.00%
Alexey Dobriyan
4
4.26%
1
25.00%
Total
94
100.00%
4
100.00%



static int __net_init icmpv6_sk_init(struct net *net)
{
	struct sock *sk;
	int err, i, j;

	net->ipv6.icmp_sk =
		kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL);
	if (!net->ipv6.icmp_sk)
		return -ENOMEM;

	for_each_possible_cpu(i) {
		err = inet_ctl_sock_create(&sk, PF_INET6,
					   SOCK_RAW, IPPROTO_ICMPV6, net);
		if (err < 0) {
			pr_err("Failed to initialize the ICMP6 control socket (err %d)\n",
			       err);
			goto fail;
		}

		net->ipv6.icmp_sk[i] = sk;

		/* Enough space for 2 64K ICMP packets, including
                 * sk_buff struct overhead.
                 */
		sk->sk_sndbuf = 2 * SKB_TRUESIZE(64 * 1024);
	}
	return 0;

 fail:
	for (j = 0; j < i; j++)
		inet_ctl_sock_destroy(net->ipv6.icmp_sk[j]);
	kfree(net->ipv6.icmp_sk);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Denis V. Lunev
70
42.68%
4
19.05%
Linus Torvalds (pre-git)
36
21.95%
6
28.57%
David S. Miller
24
14.63%
3
14.29%
Christoph Hellwig
18
10.98%
1
4.76%
Al Viro
7
4.27%
1
4.76%
John Hawkes
2
1.22%
1
4.76%
Eric Dumazet
2
1.22%
1
4.76%
Joe Perches
2
1.22%
1
4.76%
Arnaldo Carvalho de Melo
1
0.61%
1
4.76%
Kamezawa Hiroyuki
1
0.61%
1
4.76%
Ian Morris
1
0.61%
1
4.76%
Total
164
100.00%
21
100.00%



static void __net_exit icmpv6_sk_exit(struct net *net)
{
	int i;

	for_each_possible_cpu(i) {
		inet_ctl_sock_destroy(net->ipv6.icmp_sk[i]);
	}
	kfree(net->ipv6.icmp_sk);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Denis V. Lunev
25
59.52%
3
37.50%
Linus Torvalds (pre-git)
7
16.67%
2
25.00%
David S. Miller
7
16.67%
1
12.50%
John Hawkes
2
4.76%
1
12.50%
Kamezawa Hiroyuki
1
2.38%
1
12.50%
Total
42
100.00%
8
100.00%


static struct pernet_operations icmpv6_sk_ops = {
	.init = icmpv6_sk_init,
	.exit = icmpv6_sk_exit,
};



int __init icmpv6_init(void)
{
	int err;

	err = register_pernet_subsys(&icmpv6_sk_ops);
	if (err < 0)
		return err;

	err = -EAGAIN;
	if (inet6_add_protocol(&icmpv6_protocol, IPPROTO_ICMPV6) < 0)
		goto fail;

	err = inet6_register_icmp_sender(icmp6_send);
	if (err)
		goto sender_reg_err;
	return 0;

sender_reg_err:
	inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
fail:
	pr_err("Failed to register ICMP6 protocol\n");
	unregister_pernet_subsys(&icmpv6_sk_ops);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Denis V. Lunev
66
72.53%
1
33.33%
Pravin B Shelar
24
26.37%
1
33.33%
Joe Perches
1
1.10%
1
33.33%
Total
91
100.00%
3
100.00%



void icmpv6_cleanup(void)
{
	inet6_unregister_icmp_sender(icmp6_send);
	unregister_pernet_subsys(&icmpv6_sk_ops);
	inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
Denis V. Lunev
12
46.15%
1
25.00%
Linus Torvalds (pre-git)
7
26.92%
1
25.00%
Pravin B Shelar
5
19.23%
1
25.00%
David S. Miller
2
7.69%
1
25.00%
Total
26
100.00%
4
100.00%


static const struct icmp6_err {
	
int err;
	
int fatal;
} 
tab_unreach[] = {
	{	/* NOROUTE */
		.err	= ENETUNREACH,
		.fatal	= 0,
        },
	{	/* ADM_PROHIBITED */
		.err	= EACCES,
		.fatal	= 1,
        },
	{	/* Was NOT_NEIGHBOUR, now reserved */
		.err	= EHOSTUNREACH,
		.fatal	= 0,
        },
	{	/* ADDR_UNREACH */
		.err	= EHOSTUNREACH,
		.fatal	= 0,
        },
	{	/* PORT_UNREACH */
		.err	= ECONNREFUSED,
		.fatal	= 1,
        },
	{	/* POLICY_FAIL */
		.err	= EACCES,
		.fatal	= 1,
        },
	{	/* REJECT_ROUTE */
		.err	= EACCES,
		.fatal	= 1,
        },
};



int icmpv6_err_convert(u8 type, u8 code, int *err)
{
	int fatal = 0;

	*err = EPROTO;

	switch (type) {
	case ICMPV6_DEST_UNREACH:
		fatal = 1;
		if (code < ARRAY_SIZE(tab_unreach)) {
			*err  = tab_unreach[code].err;
			fatal = tab_unreach[code].fatal;
		}
		break;

	case ICMPV6_PKT_TOOBIG:
		*err = EMSGSIZE;
		break;

	case ICMPV6_PARAMPROB:
		*err = EPROTO;
		fatal = 1;
		break;

	case ICMPV6_TIME_EXCEED:
		*err = EHOSTUNREACH;
		break;
	}

	return fatal;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
96
93.20%
3
60.00%
Jiri Bohac
5
4.85%
1
20.00%
Brian Haley
2
1.94%
1
20.00%
Total
103
100.00%
5
100.00%


EXPORT_SYMBOL(icmpv6_err_convert);

#ifdef CONFIG_SYSCTL

static struct ctl_table ipv6_icmp_table_template[] = {
	{
		.procname	= "ratelimit",
		.data		= &init_net.ipv6.sysctl.icmpv6_time,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_ms_jiffies,
        },
	{ },
};



struct ctl_table * __net_init ipv6_icmp_sysctl_init(struct net *net)
{
	struct ctl_table *table;

	table = kmemdup(ipv6_icmp_table_template,
			sizeof(ipv6_icmp_table_template),
			GFP_KERNEL);

	if (table)
		table[0].data = &net->ipv6.sysctl.icmpv6_time;

	return table;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Daniel Lezcano
34
61.82%
1
33.33%
Hideaki Yoshifuji / 吉藤英明
20
36.36%
1
33.33%
Alexey Dobriyan
1
1.82%
1
33.33%
Total
55
100.00%
3
100.00%

#endif
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
1121
23.13%
16
8.84%
David S. Miller
630
13.00%
19
10.50%
Kazunori Miyazawa
531
10.96%
1
0.55%
Eric Dumazet
388
8.01%
14
7.73%
Denis V. Lunev
281
5.80%
9
4.97%
Hideaki Yoshifuji / 吉藤英明
221
4.56%
19
10.50%
Linus Torvalds
204
4.21%
4
2.21%
Lorenzo Colitti
144
2.97%
4
2.21%
Herbert Xu
140
2.89%
5
2.76%
Masahide Nakamura
127
2.62%
2
1.10%
Jesper Dangaard Brouer
107
2.21%
2
1.10%
Arnaldo Carvalho de Melo
98
2.02%
8
4.42%
Steffen Klassert
81
1.67%
1
0.55%
Pravin B Shelar
63
1.30%
1
0.55%
Wei Wang
58
1.20%
1
0.55%
Daniel Lezcano
50
1.03%
4
2.21%
Hannes Frederic Sowa
43
0.89%
5
2.76%
Duan Jiong
42
0.87%
2
1.10%
Randy Dunlap
38
0.78%
1
0.55%
Björn Mork
38
0.78%
1
0.55%
Yasuyuki Kozakai
36
0.74%
1
0.55%
Erich E. Hoover
32
0.66%
1
0.55%
Jiri Bohac
31
0.64%
1
0.55%
Alexey Dobriyan
30
0.62%
5
2.76%
François-Xavier Le Bail
30
0.62%
4
2.21%
David Ahern
30
0.62%
5
2.76%
Benjamin Thery
30
0.62%
1
0.55%
Soheil Hassas Yeganeh
20
0.41%
1
0.55%
Christoph Hellwig
19
0.39%
1
0.55%
Rick Jones
18
0.37%
1
0.55%
Joe Perches
17
0.35%
3
1.66%
Art Haas
15
0.31%
1
0.55%
Martin KaFai Lau
14
0.29%
2
1.10%
Venkat Yekkirala
14
0.29%
1
0.55%
Al Viro
13
0.27%
4
2.21%
Ian Morris
11
0.23%
3
1.66%
Brian Haley
10
0.21%
2
1.10%
Jesse Gross
9
0.19%
1
0.55%
Ville Nuorvala
7
0.14%
2
1.10%
Roopa Prabhu
6
0.12%
1
0.55%
Simon Horman
6
0.12%
1
0.55%
Stephen Hemminger
5
0.10%
3
1.66%
John Hawkes
4
0.08%
1
0.55%
Andi Kleen
4
0.08%
1
0.55%
Jan Oravec
4
0.08%
1
0.55%
Dipankar Sarma
3
0.06%
1
0.55%
Tejun Heo
3
0.06%
1
0.55%
Alexey Kuznetsov
3
0.06%
1
0.55%
Tom Herbert
2
0.04%
1
0.55%
Pavel Emelyanov
2
0.04%
1
0.55%
Kamezawa Hiroyuki
2
0.04%
1
0.55%
Eric W. Biedermann
2
0.04%
1
0.55%
Stephen Rothwell
2
0.04%
1
0.55%
David L Stevens
2
0.04%
1
0.55%
Ravikiran G. Thirumalai
1
0.02%
1
0.55%
Arjan van de Ven
1
0.02%
1
0.55%
Patrick McHardy
1
0.02%
1
0.55%
Adrian Bunk
1
0.02%
1
0.55%
Américo Wang
1
0.02%
1
0.55%
Total
4846
100.00%
181
100.00%
Directory: net/ipv6

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