cregit-Linux how code gets into the kernel

Release 4.11 net/ipv4/protocol.c

Directory: net/ipv4
/*
 * 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.
 *
 *              INET protocol dispatch tables.
 *
 * Authors:     Ross Biro
 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *
 * Fixes:
 *              Alan Cox        : Ahah! udp icmp errors don't work because
 *                                udp_err is never called!
 *              Alan Cox        : Added new fields for init and ready for
 *                                proper fragmentation (_NO_ 4K limits!)
 *              Richard Colella : Hang on hash collision
 *              Vince Laviano   : Modified inet_del_protocol() to correctly
 *                                maintain copy bit.
 *
 *              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/cache.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <net/protocol.h>


const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS] __read_mostly;

const struct net_offload __rcu *inet_offloads[MAX_INET_PROTOS] __read_mostly;

EXPORT_SYMBOL(inet_offloads);


int inet_add_protocol(const struct net_protocol *prot, unsigned char protocol) { if (!prot->netns_ok) { pr_err("Protocol %u is not namespace aware, cannot register.\n", protocol); return -EINVAL; } return !cmpxchg((const struct net_protocol **)&inet_protos[protocol], NULL, prot) ? 0 : -1; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller2743.55%330.00%
Eric Dumazet1829.03%220.00%
Linus Torvalds (pre-git)1422.58%220.00%
Alexey Dobriyan11.61%110.00%
Stephen Hemminger11.61%110.00%
Arnaldo Carvalho de Melo11.61%110.00%
Total62100.00%10100.00%

EXPORT_SYMBOL(inet_add_protocol);
int inet_add_offload(const struct net_offload *prot, unsigned char protocol) { return !cmpxchg((const struct net_offload **)&inet_offloads[protocol], NULL, prot) ? 0 : -1; }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich42100.00%1100.00%
Total42100.00%1100.00%

EXPORT_SYMBOL(inet_add_offload);
int inet_del_protocol(const struct net_protocol *prot, unsigned char protocol) { int ret; ret = (cmpxchg((const struct net_protocol **)&inet_protos[protocol], prot, NULL) == prot) ? 0 : -1; synchronize_net(); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet2036.36%216.67%
Linus Torvalds (pre-git)1730.91%325.00%
David S. Miller1425.45%325.00%
Alexey Dobriyan11.82%18.33%
Linus Torvalds11.82%18.33%
Stephen Hemminger11.82%18.33%
Arnaldo Carvalho de Melo11.82%18.33%
Total55100.00%12100.00%

EXPORT_SYMBOL(inet_del_protocol);
int inet_del_offload(const struct net_offload *prot, unsigned char protocol) { int ret; ret = (cmpxchg((const struct net_offload **)&inet_offloads[protocol], prot, NULL) == prot) ? 0 : -1; synchronize_net(); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich55100.00%1100.00%
Total55100.00%1100.00%

EXPORT_SYMBOL(inet_del_offload);

Overall Contributors

PersonTokensPropCommitsCommitProp
Vlad Yasevich11842.60%14.76%
Linus Torvalds (pre-git)4817.33%523.81%
Eric Dumazet4516.25%314.29%
David S. Miller4114.80%419.05%
Arnaldo Carvalho de Melo113.97%29.52%
Alexey Dobriyan51.81%29.52%
Tom Herbert51.81%14.76%
Stephen Hemminger20.72%14.76%
Linus Torvalds10.36%14.76%
Adrian Bunk10.36%14.76%
Total277100.00%21100.00%
Directory: net/ipv4
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