/*
 * 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.
 *
 *		PF_INET6 protocol dispatch tables.
 *
 * Authors:	Pedro Roque	<roque@di.fc.ul.pt>
 *
 *		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:
 *
 *      Vince Laviano (vince@cs.stanford.edu)       16 May 2001
 *      - Removed unused variable 'inet6_protocol_base'
 *      - Modified inet6_del_protocol() to correctly maintain copy bit.
 */
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <net/protocol.h>

#if IS_ENABLED(CONFIG_IPV6)
const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly;
EXPORT_SYMBOL(inet6_protos);

int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol)
{
	return !cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol],
			NULL, prot) ? 0 : -1;
}
EXPORT_SYMBOL(inet6_add_protocol);

int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol)
{
	int ret;

	ret = (cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol],
		       prot, NULL) == prot) ? 0 : -1;

	synchronize_net();

	return ret;
}
EXPORT_SYMBOL(inet6_del_protocol);
#endif

const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS] __read_mostly;
EXPORT_SYMBOL(inet6_offloads);

int inet6_add_offload(const struct net_offload *prot, unsigned char protocol)
{
	return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol],
			NULL, prot) ? 0 : -1;
}
EXPORT_SYMBOL(inet6_add_offload);

int inet6_del_offload(const struct net_offload *prot, unsigned char protocol)
{
	int ret;

	ret = (cmpxchg((const struct net_offload **)&inet6_offloads[protocol],
		       prot, NULL) == prot) ? 0 : -1;

	synchronize_net();

	return ret;
}
EXPORT_SYMBOL(inet6_del_offload);
fe2a91c22c4de9d1fba0c8e'/><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=4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e'>net</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/net?id=4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-07 13:07:46 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e'>net: add dst_pending_confirm flag to skbuff</a></td><td>Julian Anastasov</td><td>2</td><td><span class='deletions'>-1</span>/<span class='insertions'>+5</span></td></tr>
<tr><td><span title='2017-02-07 13:07:46 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=9b8805a325591cf5b6b9df71200de25a2bd721fd'>sock: add sk_dst_pending_confirm flag</a></td><td>Julian Anastasov</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-07 11:42:35 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=bb4005bae3dab0dd21b239b1da193053151c07ba'>ipv6: sr: fix non static symbol warnings</a></td><td>Wei Yongjun</td><td>1</td><td><span class='deletions'>-4</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-07 11:42:34 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=89d82452d1fd283bb1e313bc7a1f7c324362cf02'>net/sched: act_mirred: remove duplicated include from act_mirred.c</a></td><td>Wei Yongjun</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-07 10:51:45 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=71e0bbde0d88047f66b25721f69a441d46083748'>net: dsa: Add support for platform data</a></td><td>Florian Fainelli</td><td>1</td><td><span class='deletions'>-18</span>/<span class='insertions'>+84</span></td></tr>
<tr><td><span title='2017-02-07 10:51:45 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=14b89f36eed2993670906a3991bca496a5ebf1a6'>net: dsa: Rename and export dev_to_net_device()</a></td><td>Florian Fainelli</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-06 22:53:13 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=83a718d6294964fd1b227fa5f1ad001bc1fe7656'>bridge: fdb: write to used and updated at most once per jiffy</a></td><td>Nikolay Aleksandrov</td><td>2</td><td><span class='deletions'>-2</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-06 22:53:13 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=1214628cb1868254e107230c9052f28ff9899b6a'>bridge: move write-heavy fdb members in their own cache line</a></td><td>Nikolay Aleksandrov</td><td>1</td><td><span class='deletions'>-4</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-06 22:53:13 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=f7cdee8a79a1cb03fa9ca71b825e72f880b344e1'>bridge: move to workqueue gc</a></td><td>Nikolay Aleksandrov</td><td>10</td><td><span class='deletions'>-23</span>/<span class='insertions'>+29</span></td></tr>
<tr><td><span title='2017-02-06 22:53:13 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=1f90c7f3470580e24da25f6a6c1fb480ed9371ac'>bridge: modify bridge and port to have often accessed fields in one cache line</a></td><td>Nikolay Aleksandrov</td><td>1</td><td><span class='deletions'>-23</span>/<span class='insertions'>+20</span></td></tr>
<tr><td><span title='2017-02-06 16:53:29 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=04d3a4c6af52a58370795bc9f70dc15f51f8bb84'>net: dsa: introduce bridge notifier</a></td><td>Vivien Didelot</td><td>2</td><td><span class='deletions'>-11</span>/<span class='insertions'>+61</span></td></tr>
<tr><td><span title='2017-02-06 16:53:29 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=f515f192ab4f45bb695146b82432d63d98775787'>net: dsa: add switch notifier</a></td><td>Vivien Didelot</td><td>5</td><td><span class='deletions'>-0</span>/<span class='insertions'>+70</span></td></tr>
<tr><td><span title='2017-02-06 16:53:29 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=c5d35cb32cffa6e4c2db1cbd9a544e10a8d6fda9'>net: dsa: change state setter scope</a></td><td>Vivien Didelot</td><td>1</td><td><span class='deletions'>-6</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-06 16:53:28 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=9c26542685130ef3b55cdb4e04eec0ac33376b41'>net: dsa: rollback bridging on error</a></td><td>Vivien Didelot</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+13</span></td></tr>
<tr><td><span title='2017-02-06 16:53:28 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=8e92ab3a426e04dc355b196e3b4474f633025a3b'>net: dsa: simplify netdevice events handling</a></td><td>Vivien Didelot</td><td>1</td><td><span class='deletions'>-28</span>/<span class='insertions'>+16</span></td></tr>
<tr><td><span title='2017-02-06 16:53:28 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=88e4f0ca4e4e7760e4aad544789c5408219886d5'>net: dsa: move netdevice notifier registration</a></td><td>Vivien Didelot</td><td>3</td><td><span class='deletions'>-10</span>/<span class='insertions'>+26</span></td></tr>
<tr><td><span title='2017-02-06 16:33:29 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=d0d7b10b05945f40fefd4e60f457c61aefa3e9a9'>net-next: treewide use is_vlan_dev() helper function.</a></td><td>Parav Pandit</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-06 11:57:15 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=d15c9ede6123dbce14c17eb9ced229e488002735'>sctp: process fwd tsn chunk only when prsctp is enabled</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-06 11:25:57 -0500'>2017-02-06</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=a8eca326151ee1beac82a4fd86d9edad3a37aaed'>net: remove ndo_neigh_{construct, destroy} from stacked devices</a></td><td>Ido Schimmel</td><td>3</td><td><span class='deletions'>-48</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-05 16:11:57 -0500'>2017-02-05</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=02c1602ee7b3e3d062c3eacd374d6a6e3a2ebb73'>net: remove __napi_complete()</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-21</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>net: ipv6: Use compressed IPv6 addresses showing route replace error</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=16a16cd35ee29d9bea54dd60e55d9c1cc685a37d'>net: ipv6: Change notifications for multipath delete to RTA_MULTIPATH</a></td><td>David Ahern</td><td>2</td><td><span class='deletions'>-1</span>/<span class='insertions'>+28</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=3b1137fe74829e021f483756a648cbb87c8a1b4a'>net: ipv6: Change notifications for multipath add to RTA_MULTIPATH</a></td><td>David Ahern</td><td>2</td><td><span class='deletions'>-3</span>/<span class='insertions'>+53</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=beb1afac518dec5a15dc92ba8f0ca016dcf457b4'>net: ipv6: Add support to dump multipath routes via RTA_MULTIPATH attribute</a></td><td>David Ahern</td><td>2</td><td><span class='deletions'>-17</span>/<span class='insertions'>+105</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=0ae8133586ad1c9be894411aaf8b17bb58c8efe5'>net: ipv6: Allow shorthand delete of all nexthops in multipath route</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+36</span></td></tr>
<tr><td><span title='2017-02-03 17:33:01 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=6e7bc478c9a006c701c14476ec9d389a484b4864'>net: skb_needs_check() accepts CHECKSUM_NONE for tx</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-03 17:28:29 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=79e7fff47b7bb4124ef970a13eac4fdeddd1fc25'>net: remove support for per driver ndo_busy_poll()</a></td><td>Eric Dumazet</td><td>2</td><td><span class='deletions'>-16</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 16:58:20 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=52e01b84a244473074fc0612c169e2e043d58b01'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next</a></td><td>David S. Miller</td><td>53</td><td><span class='deletions'>-640</span>/<span class='insertions'>+576</span></td></tr>
<tr><td><span title='2017-02-03 16:35:43 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=69ca05ce9dec2cc95070df7f1f10ea6c9c12d237'>sched: cls_flower: expose priority to offloading netdevice</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-03 16:23:57 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=38ab52e8e1e2dd65f2d349f82553335813b638d2'>tcp: clear pfmemalloc on outgoing skb</a></td><td>Eric Dumazet