/*
 *  SR-IPv6 implementation
 *
 *  Author:
 *  David Lebrun <david.lebrun@uclouvain.be>
 *
 *
 *  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.
 */

#ifndef _NET_SEG6_H
#define _NET_SEG6_H

#include <linux/net.h>
#include <linux/ipv6.h>
#include <net/lwtunnel.h>
#include <linux/seg6.h>
#include <linux/rhashtable.h>

static inline void update_csum_diff4(struct sk_buff *skb, __be32 from,
				     __be32 to)
{
	__be32 diff[] = { ~from, to };

	skb->csum = ~csum_partial((char *)diff, sizeof(diff), ~skb->csum);
}

static inline void update_csum_diff16(struct sk_buff *skb, __be32 *from,
				      __be32 *to)
{
	__be32 diff[] = {
		~from[0], ~from[1], ~from[2], ~from[3],
		to[0], to[1], to[2], to[3],
	};

	skb->csum = ~csum_partial((char *)diff, sizeof(diff), ~skb->csum);
}

struct seg6_pernet_data {
	struct mutex lock;
	struct in6_addr __rcu *tun_src;
#ifdef CONFIG_IPV6_SEG6_HMAC
	struct rhashtable hmac_infos;
#endif
};

static inline struct seg6_pernet_data *seg6_pernet(struct net *net)
{
	return net->ipv6.seg6_data;
}

extern int seg6_init(void);
extern void seg6_exit(void);
extern int seg6_iptunnel_init(void);
extern void seg6_iptunnel_exit(void);

extern bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len);

#endif
gs</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/include/net/ip_vs.h?showmsg=1'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/include/net/ip_vs.h?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip_vs.h?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/net/ip_vs.h?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/net/ip_vs.h'>
<input type='hidden' name='id' value='7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'/><input type='hidden' name='showmsg' value='1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5&amp;showmsg=1'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5&amp;showmsg=1'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net/ip_vs.h?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5&amp;showmsg=1'>ip_vs.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/net/ip_vs.h?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-02-02 14:31:57 +0100'>2017-02-02</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip_vs.h?id=90c1aff702d449a1a248c4829d51c0bc677f968e'>ipvs: free ip_vs_dest structs when refcnt=0</a></td><td>David Windsor</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Currently, the ip_vs_dest cache frees ip_vs_dest objects when their
reference count becomes &lt; 0.  Aside from not being semantically sound,
this is problematic for the new type refcount_t, which will be introduced
shortly in a separate patch. refcount_t is the new kernel type for
holding reference counts, and provides overflow protection and a
constrained interface relative to atomic_t (the type currently being
used for kernel reference counts).

Per Julian Anastasov: "The problem is that dest_trash currently holds
deleted dests (unlinked from RCU lists) with refcnt=0."  Changing
dest_trash to hold dest with refcnt=1 will allow us to free ip_vs_dest
structs when their refcnt=0, in ip_vs_dest_put_and_free().

Signed-off-by: David Windsor &lt;dwindsor@gmail.com&gt;
Signed-off-by: Julian Anastasov &lt;ja@ssi.bg&gt;
Signed-off-by: Simon Horman &lt;horms@verge.net.au&gt;
Signed-off-by: Pablo Neira Ayuso &lt;pablo@netfilter.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-02 14:31:54 +0100'>2017-02-02</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip_vs.h?id=c74454fadd5ea6fc866ffe2c417a0dba56b2bf1c'>netfilter: add and use nf_ct_set helper</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+1</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Add a helper to assign a nf_conn entry and the ctinfo bits to an sk_buff.
This avoids changing code in followup patch that merges skb-&gt;nfct and
skb-&gt;nfctinfo into skb-&gt;_nfct.

Signed-off-by: Florian Westphal &lt;fw@strlen.de&gt;
Signed-off-by: Pablo Neira Ayuso &lt;pablo@netfilter.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-02 14:31:52 +0100'>2017-02-02</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip_vs.h?id=97a6ad13decc16c5adbf181283932daba7e17faf'>netfilter: reduce direct skb-&gt;nfct usage</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+6</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Next patch makes direct skb-&gt;nfct access illegal, reduce noise
in next patch by using accessors we already have.

Signed-off-by: Florian Westphal &lt;fw@strlen.de&gt;
Signed-off-by: Pablo Neira Ayuso &lt;pablo@netfilter.org&gt;


</td></tr>