cregit-Linux how code gets into the kernel

Release 4.11 net/ipv6/inet6_connection_sock.c

Directory: net/ipv6
/*
 * INET        An implementation of the TCP/IP protocol suite for the LINUX
 *             operating system.  INET is implemented using the  BSD Socket
 *             interface as the means of communication with the user level.
 *
 *             Support for INET6 connection oriented protocols.
 *
 * Authors:    See the TCPv6 sources
 *
 *             This program is free software; you can redistribute it and/or
 *             modify it under the terms of the GNU General Public License
 *             as published by the Free Software Foundation; either version
 *             2 of the License, or(at your option) any later version.
 */

#include <linux/module.h>
#include <linux/in6.h>
#include <linux/ipv6.h>
#include <linux/jhash.h>
#include <linux/slab.h>

#include <net/addrconf.h>
#include <net/inet_connection_sock.h>
#include <net/inet_ecn.h>
#include <net/inet_hashtables.h>
#include <net/ip6_route.h>
#include <net/sock.h>
#include <net/inet6_connection_sock.h>
#include <net/sock_reuseport.h>


struct dst_entry *inet6_csk_route_req(const struct sock *sk, struct flowi6 *fl6, const struct request_sock *req, u8 proto) { struct inet_request_sock *ireq = inet_rsk(req); const struct ipv6_pinfo *np = inet6_sk(sk); struct in6_addr *final_p, final; struct dst_entry *dst; memset(fl6, 0, sizeof(*fl6)); fl6->flowi6_proto = proto; fl6->daddr = ireq->ir_v6_rmt_addr; rcu_read_lock(); final_p = fl6_update_dst(fl6, rcu_dereference(np->opt), &final); rcu_read_unlock(); fl6->saddr = ireq->ir_v6_loc_addr; fl6->flowi6_oif = ireq->ir_iif; fl6->flowi6_mark = ireq->ir_mark; fl6->fl6_dport = ireq->ir_rmt_port; fl6->fl6_sport = htons(ireq->ir_num); fl6->flowi6_uid = sk->sk_uid; security_req_classify_flow(req, flowi6_to_flowi(fl6)); dst = ip6_dst_lookup_flow(sk, fl6, final_p); if (IS_ERR(dst)) return NULL; return dst; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller13971.28%430.77%
Eric Dumazet3115.90%538.46%
Neal Cardwell136.67%17.69%
Lorenzo Colitti105.13%215.38%
Alexey Dobriyan21.03%17.69%
Total195100.00%13100.00%

EXPORT_SYMBOL(inet6_csk_route_req);
void inet6_csk_addr2sockaddr(struct sock *sk, struct sockaddr *uaddr) { struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) uaddr; sin6->sin6_family = AF_INET6; sin6->sin6_addr = sk->sk_v6_daddr; sin6->sin6_port = inet_sk(sk)->inet_dport; /* We do not store received flowlabel for TCP */ sin6->sin6_flowinfo = 0; sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr, sk->sk_bound_dev_if); }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo6890.67%120.00%
Eric Dumazet34.00%240.00%
Hannes Frederic Sowa34.00%120.00%
Alexey Dobriyan11.33%120.00%
Total75100.00%5100.00%

EXPORT_SYMBOL_GPL(inet6_csk_addr2sockaddr);
static inline struct dst_entry *__inet6_csk_dst_check(struct sock *sk, u32 cookie) { return __sk_dst_check(sk, cookie); }

Contributors

PersonTokensPropCommitsCommitProp
Noriaki Takamiya2496.00%150.00%
Nicolas Dichtel14.00%150.00%
Total25100.00%2100.00%


static struct dst_entry *inet6_csk_route_socket(struct sock *sk, struct flowi6 *fl6) { struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); struct in6_addr *final_p, final; struct dst_entry *dst; memset(fl6, 0, sizeof(*fl6)); fl6->flowi6_proto = sk->sk_protocol; fl6->daddr = sk->sk_v6_daddr; fl6->saddr = np->saddr; fl6->flowlabel = np->flow_label; IP6_ECN_flow_xmit(sk, fl6->flowlabel); fl6->flowi6_oif = sk->sk_bound_dev_if; fl6->flowi6_mark = sk->sk_mark; fl6->fl6_sport = inet->inet_sport; fl6->fl6_dport = inet->inet_dport; fl6->flowi6_uid = sk->sk_uid; security_sk_classify_flow(sk, flowi6_to_flowi(fl6)); rcu_read_lock(); final_p = fl6_update_dst(fl6, rcu_dereference(np->opt), &final); rcu_read_unlock(); dst = __inet6_csk_dst_check(sk, np->dst_cookie); if (!dst) { dst = ip6_dst_lookup_flow(sk, fl6, final_p); if (!IS_ERR(dst)) ip6_dst_store(sk, dst, NULL, NULL); } return dst; }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo9943.42%15.56%
David S. Miller7131.14%633.33%
Eric Dumazet2912.72%527.78%
Lorenzo Colitti83.51%15.56%
Arnaud Ebalard73.07%15.56%
Venkat Yekkirala62.63%15.56%
Brian Haley52.19%15.56%
Alexey Dobriyan20.88%15.56%
Noriaki Takamiya10.44%15.56%
Total228100.00%18100.00%


int inet6_csk_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl_unused) { struct ipv6_pinfo *np = inet6_sk(sk); struct flowi6 fl6; struct dst_entry *dst; int res; dst = inet6_csk_route_socket(sk, &fl6); if (IS_ERR(dst)) { sk->sk_err_soft = -PTR_ERR(dst); sk->sk_route_caps = 0; kfree_skb(skb); return PTR_ERR(dst); } rcu_read_lock(); skb_dst_set_noref(skb, dst); /* Restore final destination back after routing done */ fl6.daddr = sk->sk_v6_daddr; res = ip6_xmit(sk, skb, &fl6, sk->sk_mark, rcu_dereference(np->opt), np->tclass); rcu_read_unlock(); return res; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller5841.43%320.00%
Arnaldo Carvalho de Melo4028.57%16.67%
Eric Dumazet3122.14%746.67%
Alexey Kuznetsov53.57%16.67%
Pablo Neira Ayuso42.86%16.67%
Alexey Dobriyan21.43%213.33%
Total140100.00%15100.00%

EXPORT_SYMBOL_GPL(inet6_csk_xmit);
struct dst_entry *inet6_csk_update_pmtu(struct sock *sk, u32 mtu) { struct flowi6 fl6; struct dst_entry *dst = inet6_csk_route_socket(sk, &fl6); if (IS_ERR(dst)) return NULL; dst->ops->update_pmtu(dst, sk, NULL, mtu); dst = inet6_csk_route_socket(sk, &fl6); return IS_ERR(dst) ? NULL : dst; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller5571.43%250.00%
Eric Dumazet2228.57%250.00%
Total77100.00%4100.00%

EXPORT_SYMBOL_GPL(inet6_csk_update_pmtu);

Overall Contributors

PersonTokensPropCommitsCommitProp
David S. Miller32841.00%820.00%
Arnaldo Carvalho de Melo24831.00%25.00%
Eric Dumazet12115.12%1435.00%
Noriaki Takamiya253.12%12.50%
Lorenzo Colitti182.25%25.00%
Neal Cardwell131.62%12.50%
Arnaud Ebalard70.88%12.50%
Alexey Dobriyan70.88%25.00%
Venkat Yekkirala60.75%12.50%
Brian Haley50.62%12.50%
Alexey Kuznetsov50.62%12.50%
Pablo Neira Ayuso40.50%12.50%
Adrian Bunk30.38%12.50%
Tejun Heo30.38%12.50%
Hannes Frederic Sowa30.38%12.50%
Craig Gallek30.38%12.50%
Nicolas Dichtel10.12%12.50%
Total800100.00%40100.00%
Directory: net/ipv6
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