cregit-Linux how code gets into the kernel

Release 4.11 net/ipv6/ip6_output.c

Directory: net/ipv6
/*
 *      IPv6 output functions
 *      Linux INET6 implementation
 *
 *      Authors:
 *      Pedro Roque             <roque@di.fc.ul.pt>
 *
 *      Based on linux/net/ipv4/ip_output.c
 *
 *      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:
 *      A.N.Kuznetsov   :       airthmetics in fragmentation.
 *                              extension headers are implemented.
 *                              route changes now work.
 *                              ip6_forward does not confuse sniffers.
 *                              etc.
 *
 *      H. von Brand    :       Added missing #include <linux/string.h>
 *      Imran Patel     :       frag id should be in NBO
 *      Kazunori MIYAZAWA @USAGI
 *                      :       add ip6_append_data and related functions
 *                              for datagram xmit
 */

#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/socket.h>
#include <linux/net.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/in6.h>
#include <linux/tcp.h>
#include <linux/route.h>
#include <linux/module.h>
#include <linux/slab.h>

#include <linux/bpf-cgroup.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.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/addrconf.h>
#include <net/rawv6.h>
#include <net/icmp.h>
#include <net/xfrm.h>
#include <net/checksum.h>
#include <linux/mroute6.h>
#include <net/l3mdev.h>
#include <net/lwtunnel.h>


static int ip6_finish_output2(struct net *net, struct sock *sk, struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); struct net_device *dev = dst->dev; struct neighbour *neigh; struct in6_addr *nexthop; int ret; skb->protocol = htons(ETH_P_IPV6); skb->dev = dev; if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr)) { struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb)); if (!(dev->flags & IFF_LOOPBACK) && sk_mc_loop(sk) && ((mroute6_socket(net, skb) && !(IP6CB(skb)->flags & IP6SKB_FORWARDED)) || ipv6_chk_mcast_addr(dev, &ipv6_hdr(skb)->daddr, &ipv6_hdr(skb)->saddr))) { struct sk_buff *newskb = skb_clone(skb, GFP_ATOMIC); /* Do not check for IFF_ALLMULTI; multicast routing is not supported in any case. */ if (newskb) NF_HOOK(NFPROTO_IPV6, NF_INET_POST_ROUTING, net, sk, newskb, NULL, newskb->dev, dev_loopback_xmit); if (ipv6_hdr(skb)->hop_limit == 0) { IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS); kfree_skb(skb); return 0; } } IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, skb->len); if (IPV6_ADDR_MC_SCOPE(&ipv6_hdr(skb)->daddr) <= IPV6_ADDR_SCOPE_NODELOCAL && !(dev->flags & IFF_LOOPBACK)) { kfree_skb(skb); return 0; } } if (lwtunnel_xmit_redirect(dst->lwtstate)) { int res = lwtunnel_xmit(skb); if (res < 0 || res == LWTUNNEL_XMIT_DONE) return res; } rcu_read_lock_bh(); nexthop = rt6_nexthop((struct rt6_info *)dst, &ipv6_hdr(skb)->daddr); neigh = __ipv6_neigh_lookup_noref(dst->dev, nexthop); if (unlikely(!neigh)) neigh = __neigh_create(&nd_tbl, nexthop, dst->dev, false); if (!IS_ERR(neigh)) { sock_confirm_neigh(skb, neigh); ret = neigh_output(neigh, skb); rcu_read_unlock_bh(); return ret; } rcu_read_unlock_bh(); IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES); kfree_skb(skb); return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)13131.26%716.67%
Hideaki Yoshifuji / 吉藤英明9322.20%511.90%
Hannes Frederic Sowa358.35%24.76%
Roopa Prabhu327.64%12.38%
David S. Miller327.64%614.29%
Jan Engelhardt225.25%24.76%
Arnaldo Carvalho de Melo122.86%12.38%
Eric W. Biedermann112.63%37.14%
Martin KaFai Lau81.91%12.38%
Julian Anastasov81.91%24.76%
Neil Horman61.43%12.38%
Eric Dumazet61.43%12.38%
Shirley Ma51.19%24.76%
David L Stevens51.19%12.38%
Octavian Purdila40.95%12.38%
Patrick McHardy30.72%24.76%
Benjamin Thery20.48%12.38%
Denis V. Lunev20.48%12.38%
Herbert Xu10.24%12.38%
Michel Machado10.24%12.38%
Total419100.00%42100.00%


static int ip6_finish_output(struct net *net, struct sock *sk, struct sk_buff *skb) { int ret; ret = BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb); if (ret) { kfree_skb(skb); return ret; } if ((skb->len > ip6_skb_dst_mtu(skb) && !skb_is_gso(skb)) || dst_allfrag(skb_dst(skb)) || (IP6CB(skb)->frag_max_size && skb->len > IP6CB(skb)->frag_max_size)) return ip6_fragment(net, sk, skb, ip6_finish_output2); else return ip6_finish_output2(net, sk, skb); }

Contributors

PersonTokensPropCommitsCommitProp
Jan Engelhardt5345.30%116.67%
Daniel Mack2622.22%116.67%
Jiri Pirko2017.09%116.67%
David S. Miller97.69%116.67%
Eric W. Biedermann97.69%233.33%
Total117100.00%6100.00%


int ip6_output(struct net *net, struct sock *sk, struct sk_buff *skb) { struct net_device *dev = skb_dst(skb)->dev; struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb)); if (unlikely(idev->cnf.disable_ipv6)) { IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS); kfree_skb(skb); return 0; } return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING, net, sk, skb, NULL, dev, ip6_finish_output, !(IP6CB(skb)->flags & IP6SKB_REROUTED)); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3835.51%18.33%
Jan Engelhardt3431.78%216.67%
Kazunori Miyazawa1413.08%18.33%
Eric Dumazet87.48%216.67%
Eric W. Biedermann87.48%325.00%
David S. Miller21.87%18.33%
Herbert Xu21.87%18.33%
Denis V. Lunev10.93%18.33%
Total107100.00%12100.00%

/* * xmit an sk_buff (used by TCP, SCTP and DCCP) * Note : socket lock is not held for SYNACK packets, but might be modified * by calls to skb_set_owner_w() and ipv6_local_error(), * which are using proper atomic operations or spinlocks. */
int ip6_xmit(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, __u32 mark, struct ipv6_txoptions *opt, int tclass) { struct net *net = sock_net(sk); const struct ipv6_pinfo *np = inet6_sk(sk); struct in6_addr *first_hop = &fl6->daddr; struct dst_entry *dst = skb_dst(skb); struct ipv6hdr *hdr; u8 proto = fl6->flowi6_proto; int seg_len = skb->len; int hlimit = -1; u32 mtu; if (opt) { unsigned int head_room; /* First: exthdrs may take lots of space (~8K for now) MAX_HEADER is not enough. */ head_room = opt->opt_nflen + opt->opt_flen; seg_len += head_room; head_room += sizeof(struct ipv6hdr) + LL_RESERVED_SPACE(dst->dev); if (skb_headroom(skb) < head_room) { struct sk_buff *skb2 = skb_realloc_headroom(skb, head_room); if (!skb2) { IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUTDISCARDS); kfree_skb(skb); return -ENOBUFS; } consume_skb(skb); skb = skb2; /* skb_set_owner_w() changes sk->sk_wmem_alloc atomically, * it is safe to call in our context (socket lock not held) */ skb_set_owner_w(skb, (struct sock *)sk); } if (opt->opt_flen) ipv6_push_frag_opts(skb, opt, &proto); if (opt->opt_nflen) ipv6_push_nfrag_opts(skb, opt, &proto, &first_hop, &fl6->saddr); } skb_push(skb, sizeof(struct ipv6hdr)); skb_reset_network_header(skb); hdr = ipv6_hdr(skb); /* * Fill in the IPv6 header */ if (np) hlimit = np->hop_limit; if (hlimit < 0) hlimit = ip6_dst_hoplimit(dst); ip6_flow_hdr(hdr, tclass, ip6_make_flowlabel(net, skb, fl6->flowlabel, np->autoflowlabel, fl6)); hdr->payload_len = htons(seg_len); hdr->nexthdr = proto; hdr->hop_limit = hlimit; hdr->saddr = fl6->saddr; hdr->daddr = *first_hop; skb->protocol = htons(ETH_P_IPV6); skb->priority = sk->sk_priority; skb->mark = mark; mtu = dst_mtu(dst); if ((skb->len <= mtu) || skb->ignore_df || skb_is_gso(skb)) { IP6_UPD_PO_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUT, skb->len); /* if egress device is enslaved to an L3 master device pass the * skb to its handler for processing */ skb = l3mdev_ip6_out((struct sock *)sk, skb); if (unlikely(!skb)) return 0; /* hooks should never assume socket lock is held. * we promote our socket to non const */ return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, (struct sock *)sk, skb, NULL, dst->dev, dst_output); } skb->dev = dst->dev; /* ipv6_local_error() does not require socket lock, * we promote our socket to non const */ ipv6_local_error((struct sock *)sk, EMSGSIZE, fl6, mtu); IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGFAILS); kfree_skb(skb); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)27350.84%916.36%
Hideaki Yoshifuji / 吉藤英明468.57%712.73%
Eric Dumazet366.70%47.27%
David Ahern264.84%11.82%
David S. Miller173.17%59.09%
Denis V. Lunev162.98%11.82%
Tom Herbert132.42%23.64%
Arnaldo Carvalho de Melo122.23%23.64%
Sridhar Samudrala112.05%11.82%
Alexey Kuznetsov112.05%11.82%
Shirley Ma101.86%11.82%
Patrick McHardy91.68%23.64%
Hannes Frederic Sowa91.68%11.82%
Neil Horman61.12%11.82%
Herbert Xu61.12%35.45%
David Lebrun50.93%11.82%
Tóth László Attila50.93%11.82%
Gerrit Renker40.74%11.82%
Pablo Neira Ayuso40.74%11.82%
Steffen Klassert40.74%11.82%
Alexey Dobriyan30.56%11.82%
Eric W. Biedermann30.56%23.64%
Kazunori Miyazawa20.37%11.82%
Wei Yongjun20.37%11.82%
Ian Morris10.19%11.82%
Américo Wang10.19%11.82%
Jan Engelhardt10.19%11.82%
Chuck Lever10.19%11.82%
Total537100.00%55100.00%

EXPORT_SYMBOL(ip6_xmit);
static int ip6_call_ra_chain(struct sk_buff *skb, int sel) { struct ip6_ra_chain *ra; struct sock *last = NULL; read_lock(&ip6_ra_lock); for (ra = ip6_ra_chain; ra; ra = ra->next) { struct sock *sk = ra->sk; if (sk && ra->sel == sel && (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == skb->dev->ifindex)) { if (last) { struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); if (skb2) rawv6_rcv(last, skb2); } last = sk; } } if (last) { rawv6_rcv(last, skb); read_unlock(&ip6_ra_lock); return 1; } read_unlock(&ip6_ra_lock); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)13288.00%360.00%
Andrew McDonald1711.33%120.00%
Adrian Bunk10.67%120.00%
Total150100.00%5100.00%


static int ip6_forward_proxy_check(struct sk_buff *skb) { struct ipv6hdr *hdr = ipv6_hdr(skb); u8 nexthdr = hdr->nexthdr; __be16 frag_off; int offset; if (ipv6_ext_hdr(nexthdr)) { offset = ipv6_skip_exthdr(skb, sizeof(*hdr), &nexthdr, &frag_off); if (offset < 0) return 0; } else offset = sizeof(struct ipv6hdr); if (nexthdr == IPPROTO_ICMPV6) { struct icmp6hdr *icmp6; if (!pskb_may_pull(skb, (skb_network_header(skb) + offset + 1 - skb->data))) return 0; icmp6 = (struct icmp6hdr *)(skb_network_header(skb) + offset); switch (icmp6->icmp6_type) { case NDISC_ROUTER_SOLICITATION: case NDISC_ROUTER_ADVERTISEMENT: case NDISC_NEIGHBOUR_SOLICITATION: case NDISC_NEIGHBOUR_ADVERTISEMENT: case NDISC_REDIRECT: /* For reaction involving unicast neighbor discovery * message destined to the proxied address, pass it to * input function. */ return 1; default: break; } } /* * The proxying router can't forward traffic sent to a link-local * address, so signal the sender and discard the packet. This * behavior is clarified by the MIPv6 specification. */ if (ipv6_addr_type(&hdr->daddr) & IPV6_ADDR_LINKLOCAL) { dst_link_failure(skb); return -1; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ville Nuorvala17491.10%240.00%
Arnaldo Carvalho de Melo115.76%240.00%
Jesse Gross63.14%120.00%
Total191100.00%5100.00%


static inline int ip6_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb) { return dst_output(net, sk, skb); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1753.12%120.00%
Eric W. Biedermann825.00%360.00%
David S. Miller721.88%120.00%
Total32100.00%5100.00%


static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst) { unsigned int mtu; struct inet6_dev *idev; if (dst_metric_locked(dst, RTAX_MTU)) { mtu = dst_metric_raw(dst, RTAX_MTU); if (mtu) return mtu; } mtu = IPV6_MIN_MTU; rcu_read_lock(); idev = __in6_dev_get(dst->dev); if (idev) mtu = idev->cnf.mtu6; rcu_read_unlock(); return mtu; }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa83100.00%1100.00%
Total83100.00%1100.00%


static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu) { if (skb->len <= mtu) return false; /* ipv6 conntrack defrag sets max_frag_size + ignore_df */ if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu) return true; if (skb->ignore_df) return false; if (skb_is_gso(skb) && skb_gso_validate_mtu(skb, mtu)) return false; return true; }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal7393.59%250.00%
Marcelo Ricardo Leitner33.85%125.00%
Américo Wang22.56%125.00%
Total78100.00%4100.00%


int ip6_forward(struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); struct ipv6hdr *hdr = ipv6_hdr(skb); struct inet6_skb_parm *opt = IP6CB(skb); struct net *net = dev_net(dst->dev); u32 mtu; if (net->ipv6.devconf_all->forwarding == 0) goto error; if (skb->pkt_type != PACKET_HOST) goto drop; if (unlikely(skb->sk)) goto drop; if (skb_warn_if_lro(skb)) goto drop; if (!xfrm6_policy_check(NULL, XFRM_POLICY_FWD, skb)) { __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INDISCARDS); goto drop; } skb_forward_csum(skb); /* * We DO NOT make any processing on * RA packets, pushing them to user level AS IS * without ane WARRANTY that application will be able * to interpret them. The reason is that we * cannot make anything clever here. * * We are not end-node, so that if packet contains * AH/ESP, we cannot make anything. * Defragmentation also would be mistake, RA packets * cannot be fragmented, because there is no warranty * that different fragments will go along one path. --ANK */ if (unlikely(opt->flags & IP6SKB_ROUTERALERT)) { if (ip6_call_ra_chain(skb, ntohs(opt->ra))) return 0; } /* * check and decrement ttl */ if (hdr->hop_limit <= 1) { /* Force OUTPUT device used as source address */ skb->dev = dst->dev; icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT, 0); __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INHDRERRORS); kfree_skb(skb); return -ETIMEDOUT; } /* XXX: idev->cnf.proxy_ndp? */ if (net->ipv6.devconf_all->proxy_ndp && pneigh_lookup(&nd_tbl, net, &hdr->daddr, skb->dev, 0)) { int proxied = ip6_forward_proxy_check(skb); if (proxied > 0) return ip6_input(skb); else if (proxied < 0) { __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INDISCARDS); goto drop; } } if (!xfrm6_route_forward(skb)) { __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INDISCARDS); goto drop; } dst = skb_dst(skb); /* IPv6 specs say nothing about it, but it is clear that we cannot send redirects to source routed frames. We don't send redirects to frames decapsulated from IPsec. */ if (skb->dev == dst->dev && opt->srcrt == 0 && !skb_sec_path(skb)) { struct in6_addr *target = NULL; struct inet_peer *peer; struct rt6_info *rt; /* * incoming and outgoing devices are the same * send a redirect. */ rt = (struct rt6_info *) dst; if (rt->rt6i_flags & RTF_GATEWAY) target = &rt->rt6i_gateway; else target = &hdr->daddr; peer = inet_getpeer_v6(net->ipv6.peers, &hdr->daddr, 1); /* Limit redirects both by destination (here) and by source (inside ndisc_send_redirect) */ if (inet_peer_xrlim_allow(peer, 1*HZ)) ndisc_send_redirect(skb, target); if (peer) inet_putpeer(peer); } else { int addrtype = ipv6_addr_type(&hdr->saddr); /* This check is security critical. */ if (addrtype == IPV6_ADDR_ANY || addrtype & (IPV6_ADDR_MULTICAST | IPV6_ADDR_LOOPBACK)) goto error; if (addrtype & IPV6_ADDR_LINKLOCAL) { icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_NOT_NEIGHBOUR, 0); goto error; } } mtu = ip6_dst_mtu_forward(dst); if (mtu < IPV6_MIN_MTU) mtu = IPV6_MIN_MTU; if (ip6_pkt_too_big(skb, mtu)) { /* Again, force OUTPUT device used as source address */ skb->dev = dst->dev; icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INTOOBIGERRORS); __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_FRAGFAILS); kfree_skb(skb); return -EMSGSIZE; } if (skb_cow(skb, dst->dev->hard_header_len)) { __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTDISCARDS); goto drop; } hdr = ipv6_hdr(skb); /* Mangling hops number delayed to point after skb COW */ hdr->hop_limit--; __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTFORWDATAGRAMS); __IP6_ADD_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTOCTETS, skb->len); return NF_HOOK(NFPROTO_IPV6, NF_INET_FORWARD, net, NULL, skb, skb->dev, dst->dev, ip6_forward_finish); error: __IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INADDRERRORS); drop: kfree_skb(skb); return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)28840.91%815.69%
Hideaki Yoshifuji / 吉藤英明8812.50%815.69%
Ville Nuorvala567.95%23.92%
David S. Miller365.11%59.80%
David L Stevens314.40%11.96%
Tom Lendacky263.69%11.96%
Ulrich Weber202.84%11.96%
Shirley Ma182.56%11.96%
Denis V. Lunev182.56%23.92%
Eric Dumazet162.27%23.92%
Vincent Bernat152.13%11.96%
Hannes Frederic Sowa131.85%23.92%
Li RongQing111.56%11.96%
Linus Torvalds101.42%11.96%
Daniel Lezcano101.42%11.96%
Ben Hutchings101.42%11.96%
Herbert Xu70.99%23.92%
Arnaldo Carvalho de Melo60.85%11.96%
Eric W. Biedermann40.57%23.92%
Wei Dong40.57%11.96%
Patrick McHardy40.57%23.92%
Masahide Nakamura40.57%11.96%
Florian Westphal30.43%11.96%
Alexey Dobriyan30.43%11.96%
Martin KaFai Lau20.28%11.96%
Jan Engelhardt10.14%11.96%
Total704100.00%51100.00%


static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from) { to->pkt_type = from->pkt_type; to->priority = from->priority; to->protocol = from->protocol; skb_dst_drop(to); skb_dst_set(to, dst_clone(skb_dst(from))); to->dev = from->dev; to->mark = from->mark; #ifdef CONFIG_NET_SCHED to->tc_index = from->tc_index; #endif nf_copy(to, from); skb_copy_secmark(to, from); }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa7069.31%114.29%
Eric Dumazet87.92%114.29%
Thomas Graf87.92%114.29%
James Morris76.93%114.29%
Yasuyuki Kozakai43.96%228.57%
Hideaki Yoshifuji / 吉藤英明43.96%114.29%
Total101100.00%7100.00%


int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, int (*output)(struct net *, struct sock *, struct sk_buff *)) { struct sk_buff *frag; struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); struct ipv6_pinfo *np = skb->sk && !dev_recursion_level() ? inet6_sk(skb->sk) : NULL; struct ipv6hdr *tmp_hdr; struct frag_hdr *fh; unsigned int mtu, hlen, left, len; int hroom, troom; __be32 frag_id; int ptr, offset = 0, err = 0; u8 *prevhdr, nexthdr = 0; hlen = ip6_find_1stfragopt(skb, &prevhdr); nexthdr = *prevhdr; mtu = ip6_skb_dst_mtu(skb); /* We must not fragment if the socket is set to force MTU discovery * or if the skb it not generated by a local socket. */ if (unlikely(!skb->ignore_df && skb->len > mtu)) goto fail_toobig; if (IP6CB(skb)->frag_max_size) { if (IP6CB(skb)->frag_max_size > mtu) goto fail_toobig; /* don't send fragments larger than what we received */ mtu = IP6CB(skb)->frag_max_size; if (mtu < IPV6_MIN_MTU) mtu = IPV6_MIN_MTU; } if (np && np->frag_size < mtu) { if (np->frag_size) mtu = np->frag_size; } if (mtu < hlen + sizeof(struct frag_hdr) + 8) goto fail_toobig; mtu -= hlen + sizeof(struct frag_hdr); frag_id = ipv6_select_ident(net, &ipv6_hdr(skb)->daddr, &ipv6_hdr(skb)->saddr); if (skb->ip_summed == CHECKSUM_PARTIAL && (err = skb_checksum_help(skb))) goto fail; hroom = LL_RESERVED_SPACE(rt->dst.dev); if (skb_has_frag_list(skb)) { unsigned int first_len = skb_pagelen(skb); struct sk_buff *frag2; if (first_len - hlen > mtu || ((first_len - hlen) & 7) || skb_cloned(skb) || skb_headroom(skb) < (hroom + sizeof(struct frag_hdr))) goto slow_path; skb_walk_frags(skb, frag) { /* Correct geometry. */ if (frag->len > mtu || ((frag->len & 7) && frag->next) || skb_headroom(frag) < (hlen + hroom + sizeof(struct frag_hdr))) goto slow_path_clean; /* Partially cloned skb? */ if (skb_shared(frag)) goto slow_path_clean; BUG_ON(frag->sk); if (skb->sk) { frag->sk = skb->sk; frag->destructor = sock_wfree; } skb->truesize -= frag->truesize; } err = 0; offset = 0; /* BUILD HEADER */ *prevhdr = NEXTHDR_FRAGMENT; tmp_hdr = kmemdup(skb_network_header(skb), hlen, GFP_ATOMIC); if (!tmp_hdr) { IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGFAILS); err = -ENOMEM; goto fail; } frag = skb_shinfo(skb)->frag_list; skb_frag_list_init(skb); __skb_pull(skb, hlen); fh = (struct frag_hdr *)__skb_push(skb, sizeof(struct frag_hdr)); __skb_push(skb, hlen); skb_reset_network_header(skb); memcpy(skb_network_header(skb), tmp_hdr, hlen); fh->nexthdr = nexthdr; fh->reserved = 0; fh->frag_off = htons(IP6_MF); fh->identification = frag_id; first_len = skb_pagelen(skb); skb->data_len = first_len - skb_headlen(skb); skb->len = first_len; ipv6_hdr(skb)->payload_len = htons(first_len - sizeof(struct ipv6hdr)); dst_hold(&rt->dst); for (;;) { /* Prepare header of the next frame, * before previous one went down. */ if (frag) { frag->ip_summed = CHECKSUM_NONE; skb_reset_transport_header(frag); fh = (struct frag_hdr *)__skb_push(frag, sizeof(struct frag_hdr)); __skb_push(frag, hlen); skb_reset_network_header(frag); memcpy(skb_network_header(frag), tmp_hdr, hlen); offset += skb->len - hlen - sizeof(struct frag_hdr); fh->nexthdr = nexthdr; fh->reserved = 0; fh->frag_off = htons(offset); if (frag->next) fh->frag_off |= htons(IP6_MF); fh->identification = frag_id; ipv6_hdr(frag)->payload_len = htons(frag->len - sizeof(struct ipv6hdr)); ip6_copy_metadata(frag, skb); } err = output(net, sk, skb); if (!err) IP6_INC_STATS(net, ip6_dst_idev(&rt->dst), IPSTATS_MIB_FRAGCREATES); if (err || !frag) break; skb = frag; frag = skb->next; skb->next = NULL; } kfree(tmp_hdr); if (err == 0) { IP6_INC_STATS(net, ip6_dst_idev(&rt->dst), IPSTATS_MIB_FRAGOKS); ip6_rt_put(rt); return 0; } kfree_skb_list(frag); IP6_INC_STATS(net, ip6_dst_idev(&rt->dst), IPSTATS_MIB_FRAGFAILS); ip6_rt_put(rt); return err; slow_path_clean: skb_walk_frags(skb, frag2) { if (frag2 == frag) break; frag2->sk = NULL; frag2->destructor = NULL; skb->truesize += frag2->truesize; } } slow_path: left = skb->len - hlen; /* Space per frame */ ptr = hlen; /* Where to start from */ /* * Fragment the datagram. */ troom = rt->dst.dev->needed_tailroom; /* * Keep copying data until we run out. */ while (left > 0) { u8 *fragnexthdr_offset; len = left; /* IF: it doesn't fit, use 'mtu' - the data space left */ if (len > mtu) len = mtu; /* IF: we are not sending up to and including the packet end then align the next start on an eight byte boundary */ if (len < left) { len &= ~7; } /* Allocate buffer */ frag = alloc_skb(len + hlen + sizeof(struct frag_hdr) + hroom + troom, GFP_ATOMIC); if (!frag) { IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGFAILS); err = -ENOMEM; goto fail; } /* * Set up data on packet */ ip6_copy_metadata(frag, skb); skb_reserve(frag, hroom); skb_put(frag, len + hlen + sizeof(struct frag_hdr)); skb_reset_network_header(frag); fh = (struct frag_hdr *)(skb_network_header(frag) + hlen); frag->transport_header = (frag->network_header + hlen + sizeof(struct frag_hdr)); /* * Charge the memory for the fragment to any owner * it might possess */ if (skb->sk) skb_set_owner_w(frag, skb->sk); /* * Copy the packet header into the new buffer. */ skb_copy_from_linear_data(skb, skb_network_header(frag), hlen); fragnexthdr_offset = skb_network_header(frag); fragnexthdr_offset += prevhdr - skb_network_header(skb); *fragnexthdr_offset = NEXTHDR_FRAGMENT; /* * Build fragment header. */ fh->nexthdr = nexthdr; fh->reserved = 0; fh->identification = frag_id; /* * Copy a block of the IP datagram. */ BUG_ON(skb_copy_bits(skb, ptr, skb_transport_header(frag), len)); left -= len; fh->frag_off = htons(offset); if (left > 0) fh->frag_off |= htons(IP6_MF); ipv6_hdr(frag)->payload_len = htons(frag->len - sizeof(struct ipv6hdr)); ptr += len; offset += len; /* * Put this fragment into the sending queue. */ err = output(net, sk, frag); if (err) goto fail; IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGCREATES); } IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGOKS); consume_skb(skb); return err; fail_toobig: if (skb->sk && dst_allfrag(skb_dst(skb))) sk_nocaps_add(skb->sk, NETIF_F_GSO_MASK); skb->dev = skb_dst(skb)->dev; icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); err = -EMSGSIZE; fail: IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGFAILS); kfree_skb(skb); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa76752.75%11.64%
Florian Westphal15910.94%46.56%
Hideaki Yoshifuji / 吉藤英明1127.70%69.84%
Eric Dumazet724.95%46.56%
Herbert Xu614.20%711.48%
Arnaldo Carvalho de Melo533.65%813.11%
Hideaki Yoshifuji/吉藤英明473.23%11.64%
Hannes Frederic Sowa352.41%58.20%
Martin KaFai Lau251.72%23.28%
David S. Miller181.24%34.92%
Denis V. Lunev161.10%11.64%
Wei Dong151.03%11.64%
Patrick McHardy140.96%11.64%
Eric W. Biedermann130.89%11.64%
John Heffner130.89%23.28%
Shan Wei60.41%11.64%
James Morris60.41%23.28%
Joe Perches60.41%11.64%
Shirley Ma40.28%11.64%
Himangi Saraogi30.21%11.64%
Américo Wang30.21%23.28%
Lucas De Marchi10.07%11.64%
Alexey Dobriyan10.07%11.64%
Ulrich Weber10.07%11.64%
Wei Yongjun10.07%11.64%
Mitsuru Kanda10.07%11.64%
Al Viro10.07%11.64%
Total1454100.00%61100.00%


static inline int ip6_rt_check(const struct rt6key *rt_key, const struct in6_addr *fl_addr, const struct in6_addr *addr_cache) { return (rt_key->plen != 128 || !ipv6_addr_equal(fl_addr, &rt_key->addr)) && (!addr_cache || !ipv6_addr_equal(fl_addr, addr_cache)); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5493.10%133.33%
Eric Dumazet35.17%133.33%
Ian Morris11.72%133.33%
Total58100.00%3100.00%


static struct dst_entry *ip6_sk_dst_check(struct sock *sk, struct dst_entry *dst, const struct flowi6 *fl6) { struct ipv6_pinfo *np = inet6_sk(sk); struct rt6_info *rt; if (!dst) goto out; if (dst->ops->family != AF_INET6) { dst_release(dst); return NULL; } rt = (struct rt6_info *)dst; /* Yes, checking route validity in not connected * case is not very simple. Take into account, * that we do not support routing by source, TOS, * and MSG_DONTROUTE --ANK (980726) * * 1. ip6_rt_check(): If route was host route, * check that cached destination is current. * If it is network route, we still may * check its validity using saved pointer * to the last used address: daddr_cache. * We do not want to save whole address now, * (because main consumer of this service * is tcp, which has not this problem), * so that the last trick works only on connected * sockets. * 2. oif also should be the same. */ if (ip6_rt_check(&rt->rt6i_dst, &fl6->daddr, np->daddr_cache) || #ifdef CONFIG_IPV6_SUBTREES ip6_rt_check(&rt->rt6i_src, &fl6->saddr, np->saddr_cache) || #endif (!(fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) && (fl6->flowi6_oif && fl6->flowi6_oif != dst->dev->ifindex))) { dst_release(dst); dst = NULL; } out: return dst; }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa5735.40%215.38%
Eric Dumazet3018.63%215.38%
Herbert Xu2314.29%215.38%
Hideaki Yoshifuji / 吉藤英明2213.66%215.38%
David S. Miller127.45%215.38%
David Ahern116.83%17.69%
Ville Nuorvala53.11%17.69%
Ian Morris10.62%17.69%
Total161100.00%13100.00%


static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6) { #ifdef CONFIG_IPV6_OPTIMISTIC_DAD struct neighbour *n; struct rt6_info *rt; #endif int err; int flags = 0; /* The correct way to handle this would be to do * ip6_route_get_saddr, and then ip6_route_output; however, * the route-specific preferred source forces the * ip6_route_output call _before_ ip6_route_get_saddr. * * In source specific routing (no src=any default route), * ip6_route_output will fail given src=any saddr, though, so * that's why we try it again later. */ if (ipv6_addr_any(&fl6->saddr) && (!*dst || !(*dst)->error)) { struct rt6_info *rt; bool had_dst = *dst != NULL; if (!had_dst) *dst = ip6_route_output(net, sk, fl6); rt = (*dst)->error ? NULL : (struct rt6_info *)*dst; err = ip6_route_get_saddr(net, rt, &fl6->daddr, sk ? inet6_sk(sk)->srcprefs : 0, &fl6->saddr); if (err) goto out_err_release; /* If we had an erroneous initial result, pretend it * never existed and let the SA-enabled version take * over. */ if (!had_dst && (*dst)->error) { dst_release(*dst); *dst = NULL; } if (fl6->flowi6_oif) flags |= RT6_LOOKUP_F_IFACE; } if (!*dst) *dst = ip6_route_output_flags(net, sk, fl6, flags); err = (*dst)->error; if (err) goto out_err_release; #ifdef CONFIG_IPV6_OPTIMISTIC_DAD /* * Here if the dst entry we've looked up * has a neighbour entry that is in the INCOMPLETE * state and the src address from the flow is * marked as OPTIMISTIC, we release the found * dst entry and replace it instead with the * dst entry of the nexthop router */ rt = (struct rt6_info *) *dst; rcu_read_lock_bh(); n = __ipv6_neigh_lookup_noref(rt->dst.dev, rt6_nexthop(rt, &fl6->daddr)); err = n && !(n->nud_state & NUD_VALID) ? -EINVAL : 0; rcu_read_unlock_bh(); if (err) { struct inet6_ifaddr *ifp; struct flowi6 fl_gw6; int redirect; ifp = ipv6_get_ifaddr(net, &fl6->saddr, (*dst)->dev, 1); redirect = (ifp && ifp->flags & IFA_F_OPTIMISTIC); if (ifp) in6_ifa_put(ifp); if (redirect) { /* * We need to get the dst entry for the * default router instead */ dst_release(*dst); memcpy(&fl_gw6, fl6, sizeof(struct flowi6)); memset(&fl_gw6.daddr, 0, sizeof(struct in6_addr)); *dst = ip6_route_output(net, sk, &fl_gw6); err = (*dst)->error; if (err) goto out_err_release; } } #endif if (ipv6_addr_v4mapped(&fl6->saddr) && !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) { err = -EAFNOSUPPORT; goto out_err_release; } return 0; out_err_release: dst_release(*dst); *dst = NULL; if (err == -ENETUNREACH) IP6_INC_STATS(net, NULL, IPSTATS_MIB_OUTNOROUTES); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Neil Horman12625.05%26.45%
Markus Stenberg10220.28%13.23%
David S. Miller5210.34%412.90%
Hideaki Yoshifuji / 吉藤英明407.95%39.68%
Jonathan T. Leighton316.16%13.23%
Kazunori Miyazawa305.96%13.23%
Herbert Xu193.78%13.23%
Paolo Abeni183.58%13.23%
Ville Nuorvala152.98%13.23%
Mitsuru Chinen132.58%13.23%
David Ahern112.19%13.23%
Daniel Walter91.79%13.23%
Willem de Bruijn81.59%13.23%
Daniel Lezcano71.39%39.68%
Martin KaFai Lau50.99%13.23%
Ian Morris50.99%26.45%
Roopa Prabhu50.99%13.23%
Eric Dumazet20.40%26.45%
Denis V. Lunev20.40%13.23%
Brian Haley20.40%13.23%
John Stultz10.20%13.23%
Total503100.00%31100.00%

/** * ip6_dst_lookup - perform route lookup on flow * @sk: socket which provides route info * @dst: pointer to dst_entry * for result * @fl6: flow to lookup * * This function performs a route lookup on the given flow. * * It returns zero on success, or a standard errno code on error. */
int ip6_dst_lookup(struct net *net, struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6) { *dst = NULL; return ip6_dst_lookup_tail(net, sk, dst, fl6); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu3376.74%133.33%
Roopa Prabhu716.28%133.33%
David S. Miller36.98%133.33%
Total43100.00%3100.00%

EXPORT_SYMBOL_GPL(ip6_dst_lookup); /** * ip6_dst_lookup_flow - perform route lookup on flow with ipsec * @sk: socket which provides route info * @fl6: flow to lookup * @final_dst: final destination address for ipsec lookup * * This function performs a route lookup on the given flow. * * It returns a valid dst pointer on success, or a pointer encoded * error code. */
struct dst_entry *ip6_dst_lookup_flow(const struct sock *sk, struct flowi6 *fl6, const struct in6_addr *final_dst) { struct dst_entry *dst = NULL; int err; err = ip6_dst_lookup_tail(sock_net(sk), sk, &dst, fl6); if (err) return ERR_PTR(err); if (final_dst) fl6->daddr = *final_dst; return xfrm_lookup_route(sock_net(sk), dst, flowi6_to_flowi(fl6), sk, 0); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller7177.17%337.50%
Herbert Xu1213.04%112.50%
Roopa Prabhu55.43%112.50%
Alexey Dobriyan22.17%112.50%
Steffen Klassert11.09%112.50%
Eric Dumazet11.09%112.50%
Total92100.00%8100.00%

EXPORT_SYMBOL_GPL(ip6_dst_lookup_flow); /** * ip6_sk_dst_lookup_flow - perform socket cached route lookup on flow * @sk: socket which provides the dst cache and route info * @fl6: flow to lookup * @final_dst: final destination address for ipsec lookup * * This function performs a route lookup on the given flow with the * possibility of using the cached route in the socket if it is valid. * It will take the socket dst lock when operating on the dst cache. * As a result, this function can only be used in process context. * * It returns a valid dst pointer on success, or a pointer encoded * error code. */
struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6, const struct in6_addr *final_dst) { struct dst_entry *dst = sk_dst_check(sk, inet6_sk(sk)->dst_cookie); dst = ip6_sk_dst_check(sk, dst, fl6); if (!dst) dst = ip6_dst_lookup_flow(sk, fl6, final_dst); return dst; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller3651.43%240.00%
Herbert Xu2535.71%120.00%
Jakub Sitnicki811.43%120.00%
Alexey Dobriyan11.43%120.00%
Total70100.00%5100.00%

EXPORT_SYMBOL_GPL(ip6_sk_dst_lookup_flow);
static inline int ip6_ufo_append_data(struct sock *sk, struct sk_buff_head *queue, int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), void *from, int length, int hh_len, int fragheaderlen, int exthdrlen, int transhdrlen, int mtu, unsigned int flags, const struct flowi6 *fl6) { struct sk_buff *skb; int err; /* There is support for UDP large send offload by network * device, so create one single skb packet containing complete * udp datagram */ skb = skb_peek_tail(queue); if (!skb) { skb = sock_alloc_send_skb(sk, hh_len + fragheaderlen + transhdrlen + 20, (flags & MSG_DONTWAIT), &err); if (!skb) return err; /* reserve space for Hardware header */ skb_reserve(skb, hh_len); /* create space for UDP/IP header */ skb_put(skb, fragheaderlen + transhdrlen); /* initialize network header pointer */ skb_set_network_header(skb, exthdrlen); /* initialize protocol header pointer */ skb->transport_header = skb->network_header + fragheaderlen; skb->protocol = htons(ETH_P_IPV6); skb->csum = 0; if (flags & MSG_CONFIRM) skb_set_dst_pending_confirm(skb, 1); __skb_queue_tail(queue, skb); } else if (skb_is_gso(skb)) { goto append; } skb->ip_summed = CHECKSUM_PARTIAL; /* Specify the length of each IPv6 datagram fragment. * It has to be a multiple of 8. */ skb_shinfo(skb)->gso_size = (mtu - fragheaderlen - sizeof(struct frag_hdr)) & ~7; skb_shinfo(skb)->gso_type = SKB_GSO_UDP; skb_shinfo(skb)->ip6_frag_id = ipv6_select_ident(sock_net(sk), &fl6->daddr, &fl6->saddr); append: return skb_append_datato_frags(sk, skb, getfrag, from, (length - transhdrlen)); }

Contributors

PersonTokensPropCommitsCommitProp
Ananda Raju16856.38%15.00%
Hannes Frederic Sowa289.40%315.00%
Jiri Pirko279.06%15.00%
Martin KaFai Lau196.38%210.00%
Julian Anastasov134.36%15.00%
Herbert Xu103.36%210.00%
Vlad Yasevich72.35%15.00%
Ian Morris62.01%210.00%
Jakub Sitnicki62.01%15.00%
Sridhar Samudrala51.68%15.00%
Arnaldo Carvalho de Melo41.34%210.00%
Eric Dumazet31.01%15.00%
Zheng Yan10.34%15.00%
Adrian Bunk10.34%15.00%
Total298100.00%20100.00%


static inline struct ipv6_opt_hdr *ip6_opt_dup(struct ipv6_opt_hdr *src, gfp_t gfp) { return src ? kmemdup(src, (src->hdrlen + 1) * 8, gfp) : NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu39100.00%1100.00%
Total39100.00%1100.00%


static inline struct ipv6_rt_hdr *ip6_rthdr_dup(struct ipv6_rt_hdr *src, gfp_t gfp) { return src ? kmemdup(src, (src->hdrlen + 1) * 8, gfp) : NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu39100.00%1100.00%
Total39100.00%1100.00%


static void ip6_append_data_mtu(unsigned int *mtu, int *maxfraglen, unsigned int fragheaderlen, struct sk_buff *skb, struct rt6_info *rt, unsigned int orig_mtu) { if (!(rt->dst.flags & DST_XFRM_TUNNEL)) { if (!skb) { /* first fragment, reserve header_len */ *mtu = orig_mtu - rt->dst.header_len; } else { /* * this fragment is not first, the headers * space is regarded as data space. */ *mtu = orig_mtu; } *maxfraglen = ((*mtu - fragheaderlen) & ~7) + fragheaderlen - sizeof(struct frag_hdr); } }

Contributors

PersonTokensPropCommitsCommitProp
Gao Feng9191.92%125.00%
Xin Long55.05%125.00%
Hannes Frederic Sowa22.02%125.00%
Ian Morris11.01%125.00%
Total99100.00%4100.00%


static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork, struct inet6_cork *v6_cork, struct ipcm6_cookie *ipc6, struct rt6_info *rt, struct flowi6 *fl6) { struct ipv6_pinfo *np = inet6_sk(sk); unsigned int mtu; struct ipv6_txoptions *opt = ipc6->opt; /* * setup for corking */ if (opt) { if (WARN_ON(v6_cork->opt)) return -EINVAL; v6_cork->opt = kzalloc(opt->tot_len, sk->sk_allocation); if (unlikely(!v6_cork->opt)) return -ENOBUFS; v6_cork->opt->tot_len = opt->tot_len; v6_cork->opt->opt_flen = opt->opt_flen; v6_cork->opt->opt_nflen = opt->opt_nflen; v6_cork->opt->dst0opt = ip6_opt_dup(opt->dst0opt, sk->sk_allocation); if (opt->dst0opt && !v6_cork->opt->dst0opt) return -ENOBUFS; v6_cork->opt->dst1opt = ip6_opt_dup(opt->dst1opt, sk->sk_allocation); if (opt->dst1opt && !v6_cork->opt->dst1opt) return -ENOBUFS; v6_cork->opt->hopopt = ip6_opt_dup(opt->hopopt, sk->sk_allocation); if (opt->hopopt && !v6_cork->opt->hopopt) return -ENOBUFS; v6_cork->opt->srcrt = ip6_rthdr_dup(opt->srcrt, sk->sk_allocation); if (opt->srcrt && !v6_cork->opt->srcrt) return -ENOBUFS; /* need source address above miyazawa*/ } dst_hold(&rt->dst); cork->base.dst = &rt->dst; cork->fl.u.ip6 = *fl6; v6_cork->hop_limit = ipc6->hlimit; v6_cork->tclass = ipc6->tclass; if (rt->dst.flags & DST_XFRM_TUNNEL) mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? rt->dst.dev->mtu : dst_mtu(&rt->dst); else mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? rt->dst.dev->mtu : dst_mtu(rt->dst.path); if (np->frag_size < mtu) { if (np->frag_size) mtu = np->frag_size; } cork->base.fragsize = mtu; if (dst_allfrag(rt->dst.path)) cork->base.flags |= IPCORK_ALLFRAG; cork->base.length = 0; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu14232.20%312.50%
Kazunori Miyazawa9822.22%14.17%
Vlad Yasevich419.30%14.17%
Gao Feng357.94%14.17%
Hideaki Yoshifuji/吉藤英明276.12%14.17%
Krishna Kumar255.67%28.33%
Hideaki Yoshifuji / 吉藤英明245.44%416.67%
Wei Wang153.40%14.17%
John Heffner132.95%14.17%
David S. Miller92.04%28.33%
Ville Nuorvala51.13%14.17%
Hannes Frederic Sowa30.68%28.33%
Steffen Klassert10.23%14.17%
Eric Dumazet10.23%14.17%
Ian Morris10.23%14.17%
Arnaldo Carvalho de Melo10.23%14.17%
Total441100.00%24100.00%


static int __ip6_append_data(struct sock *sk, struct flowi6 *fl6, struct sk_buff_head *queue, struct inet_cork *cork, struct inet6_cork *v6_cork, struct page_frag *pfrag, int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), void *from, int length, int transhdrlen, unsigned int flags, struct ipcm6_cookie *ipc6, const struct sockcm_cookie *sockc) { struct sk_buff *skb, *skb_prev = NULL; unsigned int maxfraglen, fragheaderlen, mtu, orig_mtu; int exthdrlen = 0; int dst_exthdrlen = 0; int hh_len; int copy; int err; int offset = 0; __u8 tx_flags = 0; u32 tskey = 0; struct rt6_info *rt = (struct rt6_info *)cork->dst; struct ipv6_txoptions *opt = v6_cork->opt; int csummode = CHECKSUM_NONE; unsigned int maxnonfragsize, headersize; skb = skb_peek_tail(queue); if (!skb) { exthdrlen = opt ? opt->opt_flen : 0; dst_exthdrlen = rt->dst.header_len - rt->rt6i_nfheader_len; } mtu = cork->fragsize; orig_mtu = mtu; hh_len = LL_RESERVED_SPACE(rt->dst.dev); fragheaderlen = sizeof(struct ipv6hdr) + rt->rt6i_nfheader_len + (opt ? opt->opt_nflen : 0); maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen - sizeof(struct frag_hdr); headersize = sizeof(struct ipv6hdr) + (opt ? opt->opt_flen + opt->opt_nflen : 0) + (dst_allfrag(&rt->dst) ? sizeof(struct frag_hdr) : 0) + rt->rt6i_nfheader_len; if (cork->length + length > mtu - headersize && ipc6->dontfrag && (sk->sk_protocol == IPPROTO_UDP || sk->sk_protocol == IPPROTO_RAW)) { ipv6_local_rxpmtu(sk, fl6, mtu - headersize + sizeof(struct ipv6hdr)); goto emsgsize; } if (ip6_sk_ignore_df(sk)) maxnonfragsize = sizeof(struct ipv6hdr) + IPV6_MAXPLEN; else maxnonfragsize = mtu; if (cork->length + length > maxnonfragsize - headersize) { emsgsize: ipv6_local_error(sk, EMSGSIZE, fl6, mtu - headersize + sizeof(struct ipv6hdr)); return -EMSGSIZE; } /* CHECKSUM_PARTIAL only with no extension headers and when * we are not going to fragment */ if (transhdrlen && sk->sk_protocol == IPPROTO_UDP && headersize == sizeof(struct ipv6hdr) && length <= mtu - headersize && !(flags & MSG_MORE) && rt->dst.dev->features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM)) csummode = CHECKSUM_PARTIAL; if (sk->sk_type == SOCK_DGRAM || sk->sk_type == SOCK_RAW) { sock_tx_timestamp(sk, sockc->tsflags, &tx_flags); if (tx_flags & SKBTX_ANY_SW_TSTAMP && sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID) tskey = sk->sk_tskey++; } /* * Let's try using as much space as possible. * Use MTU if total length of the message fits into the MTU. * Otherwise, we need to reserve fragment header and * fragment alignment (= 8-15 octects, in total). * * Note that we may need to "move" the data from the tail of * of the buffer to the new fragment when we split * the message. * * FIXME: It may be fragmented into multiple chunks * at once if non-fragmentable extension headers * are too large. * --yoshfuji */ cork->length += length; if ((((length + fragheaderlen) > mtu) || (skb && skb_is_gso(skb))) && (sk->sk_protocol == IPPROTO_UDP) && (rt->dst.dev->features & NETIF_F_UFO) && !dst_xfrm(&rt->dst) && (sk->sk_type == SOCK_DGRAM) && !udp_get_no_check6_tx(sk)) { err = ip6_ufo_append_data(sk, queue, getfrag, from, length, hh_len, fragheaderlen, exthdrlen, transhdrlen, mtu, flags, fl6); if (err) goto error; return 0; } if (!skb) goto alloc_new_skb; while (length > 0) { /* Check if the remaining data fits into current packet. */ copy = (cork->length <= mtu && !(cork->flags & IPCORK_ALLFRAG) ? mtu : maxfraglen) - skb->len; if (copy < length) copy = maxfraglen - skb->len; if (copy <= 0) { char *data; unsigned int datalen; unsigned int fraglen; unsigned int fraggap; unsigned int alloclen; alloc_new_skb: /* There's no room in the current skb */ if (skb) fraggap = skb->len - maxfraglen; else fraggap = 0; /* update mtu and maxfraglen if necessary */ if (!skb || !skb_prev) ip6_append_data_mtu(&mtu, &maxfraglen, fragheaderlen, skb, rt, orig_mtu); skb_prev = skb; /* * If remaining data exceeds the mtu, * we know we need more fragment(s). */ datalen = length + fraggap; if (datalen > (cork->length <= mtu && !(cork->flags & IPCORK_ALLFRAG) ? mtu : maxfraglen) - fragheaderlen) datalen = maxfraglen - fragheaderlen - rt->dst.trailer_len; if ((flags & MSG_MORE) && !(rt->dst.dev->features&NETIF_F_SG)) alloclen = mtu; else alloclen = datalen + fragheaderlen; alloclen += dst_exthdrlen; if (datalen != length + fraggap) { /* * this is not the last fragment, the trailer * space is regarded as data space. */ datalen += rt->dst.trailer_len; } alloclen += rt->dst.trailer_len; fraglen = datalen + fragheaderlen; /* * We just reserve space for fragment header. * Note: this may be overallocation if the message * (without MSG_MORE) fits into the MTU. */ alloclen += sizeof(struct frag_hdr); if (transhdrlen) { skb = sock_alloc_send_skb(sk, alloclen + hh_len, (flags & MSG_DONTWAIT), &err); } else { skb = NULL; if (atomic_read(&sk->sk_wmem_alloc) <= 2 * sk->sk_sndbuf) skb = sock_wmalloc(sk, alloclen + hh_len, 1, sk->sk_allocation); if (unlikely(!skb)) err = -ENOBUFS; } if (!skb) goto error; /* * Fill in the control structures */ skb->protocol = htons(ETH_P_IPV6); skb->ip_summed = csummode; skb->csum = 0; /* reserve for fragmentation and ipsec header */ skb_reserve(skb, hh_len + sizeof(struct frag_hdr) + dst_exthdrlen); /* Only the initial fragment is time stamped */ skb_shinfo(skb)->tx_flags = tx_flags; tx_flags = 0; skb_shinfo(skb)->tskey = tskey; tskey = 0; /* * Find where to start putting bytes */ data = skb_put(skb, fraglen); skb_set_network_header(skb, exthdrlen); data += fragheaderlen; skb->transport_header = (skb->network_header + fragheaderlen); if (fraggap) { skb->csum = skb_copy_and_csum_bits( skb_prev, maxfraglen, data + transhdrlen, fraggap, 0); skb_prev->csum = csum_sub(skb_prev->csum, skb->csum); data += fraggap; pskb_trim_unique(skb_prev, maxfraglen); } copy = datalen - transhdrlen - fraggap; if (copy < 0) { err = -EINVAL; kfree_skb(skb); goto error; } else if (copy > 0 && getfrag(from, data + transhdrlen, offset, copy, fraggap, skb) < 0) { err = -EFAULT; kfree_skb(skb); goto error; } offset += copy; length -= datalen - fraggap; transhdrlen = 0; exthdrlen = 0; dst_exthdrlen = 0; if ((flags & MSG_CONFIRM) && !skb_prev) skb_set_dst_pending_confirm(skb, 1); /* * Put the packet on the pending queue */ __skb_queue_tail(queue, skb); continue; } if (copy > length) copy = length; if (!(rt->dst.dev->features&NETIF_F_SG)) { unsigned int off; off = skb->len; if (getfrag(from, skb_put(skb, copy), offset, copy, off, skb) < 0) { __skb_trim(skb, off); err = -EFAULT; goto error; } } else { int i = skb_shinfo(skb)->nr_frags; err = -ENOMEM; if (!sk_page_frag_refill(sk, pfrag)) goto error; if (!skb_can_coalesce(skb, i, pfrag->page, pfrag->offset)) { err = -EMSGSIZE; if (i == MAX_SKB_FRAGS) goto error; __skb_fill_page_desc(skb, i, pfrag->page, pfrag->offset, 0); skb_shinfo(skb)->nr_frags = ++i; get_page(pfrag->page); } copy = min_t(int, copy, pfrag->size - pfrag->offset); if (getfrag(from, page_address(pfrag->page) + pfrag->offset, offset, copy, skb->len, skb) < 0) goto error_efault; pfrag->offset += copy; skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy); skb->len += copy; skb->data_len += copy; skb->truesize += copy; atomic_add(copy, &sk->sk_wmem_alloc); } offset += copy; length -= copy; } return 0; error_efault: err = -EFAULT; error: cork->length -= length; IP6_INC_STATS(sock_net(sk), rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa54034.18%11.64%
Hannes Frederic Sowa22214.05%711.48%
Vlad Yasevich17611.14%46.56%
Hideaki Yoshifuji / 吉藤英明17010.76%914.75%
Eric Dumazet845.32%34.92%
Gao Feng553.48%23.28%
Ananda Raju503.16%11.64%
Willem de Bruijn452.85%23.28%
Herbert Xu402.53%46.56%
Patrick McHardy332.09%23.28%
Brian Haley261.65%11.64%
Julian Anastasov181.14%11.64%
Steffen Klassert161.01%11.64%
Michal Kubeček140.89%23.28%
Arnaldo Carvalho de Melo140.89%34.92%
Soheil Hassas Yeganeh100.63%11.64%
Anders Berggren90.57%11.64%
Jakub Sitnicki70.44%23.28%
David S. Miller70.44%23.28%
Wei Wang60.38%11.64%
Xin Long50.32%11.64%
Tom Herbert50.32%11.64%
Denis V. Lunev50.32%11.64%
Zheng Li40.25%11.64%
Romain Kuntz40.25%11.64%
Masahide Nakamura40.25%23.28%
Ian Morris40.25%11.64%
Alexey Kodanev40.25%11.64%
Ian Campbell20.13%11.64%
Martin KaFai Lau10.06%11.64%
Total1580100.00%61100.00%


int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), void *from, int length, int transhdrlen, struct ipcm6_cookie *ipc6, struct flowi6 *fl6, struct rt6_info *rt, unsigned int flags, const struct sockcm_cookie *sockc) { struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); int exthdrlen; int err; if (flags&MSG_PROBE) return 0; if (skb_queue_empty(&sk->sk_write_queue)) { /* * setup for corking */ err = ip6_setup_cork(sk, &inet->cork, &np->cork, ipc6, rt, fl6); if (err) return err; exthdrlen = (ipc6->opt ? ipc6->opt->opt_flen : 0); length += exthdrlen; transhdrlen += exthdrlen; } else { fl6 = &inet->cork.fl.u.ip6; transhdrlen = 0; } return __ip6_append_data(sk, fl6, &sk->sk_write_queue, &inet->cork.base, &np->cork, sk_page_frag(sk), getfrag, from, length, transhdrlen, flags, ipc6, sockc); }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich22293.67%133.33%
Wei Wang83.38%133.33%
Soheil Hassas Yeganeh72.95%133.33%
Total237100.00%3100.00%

EXPORT_SYMBOL_GPL(ip6_append_data);
static void ip6_cork_release(struct inet_cork_full *cork, struct inet6_cork *v6_cork) { if (v6_cork->opt) { kfree(v6_cork->opt->dst0opt); kfree(v6_cork->opt->dst1opt); kfree(v6_cork->opt->hopopt); kfree(v6_cork->opt->srcrt); kfree(v6_cork->opt); v6_cork->opt = NULL; } if (cork->base.dst) { dst_release(cork->base.dst); cork->base.dst = NULL; cork->base.flags &= ~IPCORK_ALLFRAG; } memset(&cork->fl, 0, sizeof(cork->fl)); }

Contributors

PersonTokensPropCommitsCommitProp
Pavel Emelyanov6249.21%120.00%
Herbert Xu3729.37%120.00%
Vlad Yasevich1713.49%120.00%
David S. Miller86.35%120.00%
Hideaki Yoshifuji / 吉藤英明21.59%120.00%
Total126100.00%5100.00%


struct sk_buff *__ip6_make_skb(struct sock *sk, struct sk_buff_head *queue, struct inet_cork_full *cork, struct inet6_cork *v6_cork) { struct sk_buff *skb, *tmp_skb; struct sk_buff **tail_skb; struct in6_addr final_dst_buf, *final_dst = &final_dst_buf; struct ipv6_pinfo *np = inet6_sk(sk); struct net *net = sock_net(sk); struct ipv6hdr *hdr; struct ipv6_txoptions *opt = v6_cork->opt; struct rt6_info *rt = (struct rt6_info *)cork->base.dst; struct flowi6 *fl6 = &cork->fl.u.ip6; unsigned char proto = fl6->flowi6_proto; skb = __skb_dequeue(queue); if (!skb) goto out; tail_skb = &(skb_shinfo(skb)->frag_list); /* move skb->data to ip header from ext header */ if (skb->data < skb_network_header(skb)) __skb_pull(skb, skb_network_offset(skb)); while ((tmp_skb = __skb_dequeue(queue)) != NULL) { __skb_pull(tmp_skb, skb_network_header_len(skb)); *tail_skb = tmp_skb; tail_skb = &(tmp_skb->next); skb->len += tmp_skb->len; skb->data_len += tmp_skb->len; skb->truesize += tmp_skb->truesize; tmp_skb->destructor = NULL; tmp_skb->sk = NULL; } /* Allow local fragmentation. */ skb->ignore_df = ip6_sk_ignore_df(sk); *final_dst = fl6->daddr; __skb_pull(skb, skb_network_header_len(skb)); if (opt && opt->opt_flen) ipv6_push_frag_opts(skb, opt, &proto); if (opt && opt->opt_nflen) ipv6_push_nfrag_opts(skb, opt, &proto, &final_dst, &fl6->saddr); skb_push(skb, sizeof(struct ipv6hdr)); skb_reset_network_header(skb); hdr = ipv6_hdr(skb); ip6_flow_hdr(hdr, v6_cork->tclass, ip6_make_flowlabel(net, skb, fl6->flowlabel, np->autoflowlabel, fl6)); hdr->hop_limit = v6_cork->hop_limit; hdr->nexthdr = proto; hdr->saddr = fl6->saddr; hdr->daddr = *final_dst; skb->priority = sk->sk_priority; skb->mark = sk->sk_mark; skb_dst_set(skb, dst_clone(&rt->dst)); IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len); if (proto == IPPROTO_ICMPV6) { struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb)); ICMP6MSGOUT_INC_STATS(net, idev, icmp6_hdr(skb)->icmp6_type); ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS); } ip6_cork_release(cork, v6_cork); out: return skb; }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa25351.01%12.86%
Vlad Yasevich397.86%12.86%
David L Stevens357.06%12.86%
Herbert Xu255.04%25.71%
Arnaldo Carvalho de Melo244.84%514.29%
Hideaki Yoshifuji / 吉藤英明204.03%514.29%
David S. Miller183.63%38.57%
Denis V. Lunev163.23%38.57%
Tom Herbert132.62%25.71%
Patrick McHardy81.61%12.86%
Eric Dumazet71.41%12.86%
Tóth László Attila71.41%12.86%
Neil Horman61.21%12.86%
Hannes Frederic Sowa51.01%25.71%
Alexey Dobriyan51.01%12.86%
Ian Morris51.01%25.71%
David Lebrun51.01%12.86%
Shirley Ma30.60%12.86%
Américo Wang20.40%12.86%
Total496100.00%35100.00%


int ip6_send_skb(struct sk_buff *skb) { struct net *net = sock_net(skb->sk); struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); int err; err = ip6_local_out(net, skb->sk, skb); if (err) { if (err > 0) err = net_xmit_errno(err); if (err) IP6_INC_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS); } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich4448.89%116.67%
Kazunori Miyazawa2831.11%116.67%
Eric Dumazet1112.22%116.67%
Eric W. Biedermann66.67%233.33%
Herbert Xu11.11%116.67%
Total90100.00%6100.00%


int ip6_push_pending_frames(struct sock *sk) { struct sk_buff *skb; skb = ip6_finish_skb(sk); if (!skb) return 0; return ip6_send_skb(skb); }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich3597.22%150.00%
Kazunori Miyazawa12.78%150.00%
Total36100.00%2100.00%

EXPORT_SYMBOL_GPL(ip6_push_pending_frames);
static void __ip6_flush_pending_frames(struct sock *sk, struct sk_buff_head *queue, struct inet_cork_full *cork, struct inet6_cork *v6_cork) { struct sk_buff *skb; while ((skb = __skb_dequeue_tail(queue)) != NULL) { if (skb_dst(skb)) IP6_INC_STATS(sock_net(sk), ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUTDISCARDS); kfree_skb(skb); } ip6_cork_release(cork, v6_cork); }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa3137.35%110.00%
Vlad Yasevich2428.92%220.00%
Hideaki Yoshifuji / 吉藤英明1012.05%330.00%
Shirley Ma67.23%110.00%
Eric Dumazet67.23%110.00%
Denis V. Lunev56.02%110.00%
Pavel Emelyanov11.20%110.00%
Total83100.00%10100.00%


void ip6_flush_pending_frames(struct sock *sk) { __ip6_flush_pending_frames(sk, &sk->sk_write_queue, &inet_sk(sk)->cork, &inet6_sk(sk)->cork); }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich2466.67%233.33%
Pavel Emelyanov411.11%116.67%
Hideaki Yoshifuji / 吉藤英明411.11%116.67%
Kazunori Miyazawa25.56%116.67%
David S. Miller25.56%116.67%
Total36100.00%6100.00%

EXPORT_SYMBOL_GPL(ip6_flush_pending_frames);
struct sk_buff *ip6_make_skb(struct sock *sk, int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), void *from, int length, int transhdrlen, struct ipcm6_cookie *ipc6, struct flowi6 *fl6, struct rt6_info *rt, unsigned int flags, const struct sockcm_cookie *sockc) { struct inet_cork_full cork; struct inet6_cork v6_cork; struct sk_buff_head queue; int exthdrlen = (ipc6->opt ? ipc6->opt->opt_flen : 0); int err; if (flags & MSG_PROBE) return NULL; __skb_queue_head_init(&queue); cork.base.flags = 0; cork.base.addr = 0; cork.base.opt = NULL; v6_cork.opt = NULL; err = ip6_setup_cork(sk, &cork, &v6_cork, ipc6, rt, fl6); if (err) return ERR_PTR(err); if (ipc6->dontfrag < 0) ipc6->dontfrag = inet6_sk(sk)->dontfrag; err = __ip6_append_data(sk, fl6, &queue, &cork.base, &v6_cork, &current->task_frag, getfrag, from, length + exthdrlen, transhdrlen + exthdrlen, flags, ipc6, sockc); if (err) { __ip6_flush_pending_frames(sk, &queue, &cork, &v6_cork); return ERR_PTR(err); } return __ip6_make_skb(sk, &queue, &cork, &v6_cork); }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich26092.20%240.00%
Wei Wang124.26%120.00%
Soheil Hassas Yeganeh72.48%120.00%
Chris Elston31.06%120.00%
Total282100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa189321.25%30.99%
Linus Torvalds (pre-git)90010.10%134.30%
Vlad Yasevich89910.09%51.66%
Hideaki Yoshifuji / 吉藤英明7358.25%3712.25%
Herbert Xu5335.98%247.95%
Hannes Frederic Sowa4354.88%196.29%
David S. Miller3493.92%206.62%
Eric Dumazet2953.31%175.63%
Ville Nuorvala2552.86%41.32%
Florian Westphal2352.64%61.99%
Ananda Raju2182.45%10.33%
Gao Feng1812.03%20.66%
Neil Horman1441.62%30.99%
Arnaldo Carvalho de Melo1421.59%134.30%
Jan Engelhardt1111.25%30.99%
Markus Stenberg1021.14%10.33%
Denis V. Lunev810.91%41.32%
Hideaki Yoshifuji/吉藤英明740.83%10.33%
David L Stevens710.80%30.99%
Patrick McHardy710.80%61.99%
Pavel Emelyanov670.75%10.33%
Eric W. Biedermann620.70%113.64%
Martin KaFai Lau600.67%30.99%
Willem de Bruijn530.59%30.99%
Roopa Prabhu520.58%20.66%
David Ahern510.57%30.99%
Jiri Pirko470.53%20.66%
Shirley Ma460.52%20.66%
Wei Wang410.46%10.33%
Julian Anastasov390.44%30.99%
Jonathan T. Leighton310.35%10.33%
Tom Herbert310.35%30.99%
Daniel Mack290.33%10.33%
Tom Lendacky290.33%10.33%
Brian Haley280.31%20.66%
John Heffner260.29%20.66%
Ian Morris260.29%30.99%
Krishna Kumar250.28%20.66%
Soheil Hassas Yeganeh240.27%10.33%
Steffen Klassert240.27%41.32%
Jakub Sitnicki210.24%30.99%
Ulrich Weber210.24%10.33%
Wei Dong190.21%20.66%
Paolo Abeni180.20%10.33%
Andrew McDonald170.19%10.33%
Daniel Lezcano170.19%30.99%
Sridhar Samudrala160.18%20.66%
Vincent Bernat150.17%10.33%
Alexey Dobriyan150.17%30.99%
Michal Kubeček140.16%20.66%
James Morris130.15%30.99%
Mitsuru Chinen130.15%10.33%
Tóth László Attila120.13%10.33%
Alexey Kuznetsov110.12%10.33%
Li RongQing110.12%10.33%
Xin Long100.11%10.33%
David Lebrun100.11%10.33%
Linus Torvalds100.11%10.33%
Ben Hutchings100.11%10.33%
Anders Berggren90.10%10.33%
Daniel Walter90.10%10.33%
Thomas Graf80.09%10.33%
Masahide Nakamura80.09%30.99%
Chris Elston80.09%10.33%
Américo Wang80.09%20.66%
Shan Wei60.07%10.33%
Jesse Gross60.07%10.33%
Joe Perches60.07%10.33%
Octavian Purdila40.04%10.33%
Pablo Neira Ayuso40.04%10.33%
Zheng Li40.04%10.33%
Gerrit Renker40.04%10.33%
Yasuyuki Kozakai40.04%20.66%
Romain Kuntz40.04%10.33%
Alexey Kodanev40.04%10.33%
Wei Yongjun30.03%20.66%
Tejun Heo30.03%10.33%
Himangi Saraogi30.03%10.33%
Marcelo Ricardo Leitner30.03%10.33%
Ian Campbell20.02%10.33%
Benjamin Thery20.02%10.33%
Adrian Bunk20.02%20.66%
Chuck Lever10.01%10.33%
John Stultz10.01%10.33%
Zheng Yan10.01%10.33%
Al Viro10.01%10.33%
Michel Machado10.01%10.33%
Mitsuru Kanda10.01%10.33%
Lucas De Marchi10.01%10.33%
Total8909100.00%302100.00%
Directory: net/ipv6
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