/*
 *  UDPLITE     An implementation of the UDP-Lite protocol (RFC 3828).
 *
 *  Authors:    Gerrit Renker       <gerrit@erg.abdn.ac.uk>
 *
 *  Changes:
 *  Fixes:
 *		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.
 */

#define pr_fmt(fmt) "UDPLite: " fmt

#include <linux/export.h>
#include "udp_impl.h"

struct udp_table 	udplite_table __read_mostly;
EXPORT_SYMBOL(udplite_table);

static int udplite_rcv(struct sk_buff *skb)
{
	return __udp4_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
}

static void udplite_err(struct sk_buff *skb, u32 info)
{
	__udp4_lib_err(skb, info, &udplite_table);
}

static const struct net_protocol udplite_protocol = {
	.handler	= udplite_rcv,
	.err_handler	= udplite_err,
	.no_policy	= 1,
	.netns_ok	= 1,
};

struct proto 	udplite_prot = {
	.name		   = "UDP-Lite",
	.owner		   = THIS_MODULE,
	.close		   = udp_lib_close,
	.connect	   = ip4_datagram_connect,
	.disconnect	   = udp_disconnect,
	.ioctl		   = udp_ioctl,
	.init		   = udplite_sk_init,
	.destroy	   = udp_destroy_sock,
	.setsockopt	   = udp_setsockopt,
	.getsockopt	   = udp_getsockopt,
	.sendmsg	   = udp_sendmsg,
	.recvmsg	   = udp_recvmsg,
	.sendpage	   = udp_sendpage,
	.hash		   = udp_lib_hash,
	.unhash		   = udp_lib_unhash,
	.get_port	   = udp_v4_get_port,
	.memory_allocated  = &udp_memory_allocated,
	.sysctl_mem	   = sysctl_udp_mem,
	.obj_size	   = sizeof(struct udp_sock),
	.h.udp_table	   = &udplite_table,
#ifdef CONFIG_COMPAT
	.compat_setsockopt = compat_udp_setsockopt,
	.compat_getsockopt = compat_udp_getsockopt,
#endif
};
EXPORT_SYMBOL(udplite_prot);

static struct inet_protosw udplite4_protosw = {
	.type		=  SOCK_DGRAM,
	.protocol	=  IPPROTO_UDPLITE,
	.prot		=  &udplite_prot,
	.ops		=  &inet_dgram_ops,
	.flags		=  INET_PROTOSW_PERMANENT,
};

#ifdef CONFIG_PROC_FS

static const struct file_operations udplite_afinfo_seq_fops = {
	.owner    = THIS_MODULE,
	.open     = udp_seq_open,
	.read     = seq_read,
	.llseek   = seq_lseek,
	.release  = seq_release_net
};

static struct udp_seq_afinfo udplite4_seq_afinfo = {
	.name		= "udplite",
	.family		= AF_INET,
	.udp_table 	= &udplite_table,
	.seq_fops	= &udplite_afinfo_seq_fops,
	.seq_ops	= {
		.show		= udp4_seq_show,
	},
};

static int __net_init udplite4_proc_init_net(struct net *net)
{
	return udp_proc_register(net, &udplite4_seq_afinfo);
}

static void __net_exit udplite4_proc_exit_net(struct net *net)
{
	udp_proc_unregister(net, &udplite4_seq_afinfo);
}

static struct pernet_operations udplite4_net_ops = {
	.init = udplite4_proc_init_net,
	.exit = udplite4_proc_exit_net,
};

static __init int udplite4_proc_init(void)
{
	return register_pernet_subsys(&udplite4_net_ops);
}
#else
static inline int udplite4_proc_init(void)
{
	return 0;
}
#endif

void __init udplite4_register(void)
{
	udp_table_init(&udplite_table, "UDP-Lite");
	if (proto_register(&udplite_prot, 1))
		goto out_register_err;

	if (inet_add_protocol(&udplite_protocol, IPPROTO_UDPLITE) < 0)
		goto out_unregister_proto;

	inet_register_protosw(&udplite4_protosw);

	if (udplite4_proc_init())
		pr_err("%s: Cannot register /proc!\n", __func__);
	return;

out_unregister_proto:
	proto_unregister(&udplite_prot);
out_register_err:
	pr_crit("%s: Cannot add UDP-Lite protocol\n", __func__);
}
s</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='dfef358bd1beb4e7b5c94eca944be9cd23dfc752'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Christoph Hellwig &lt;hch@lst.de&gt;</td><td class='right'>2017-01-30 13:15:41 +0100</td></tr>
<tr><th>committer</th><td>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-02-02 10:35:46 -0600</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/rds.h?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>dfef358bd1beb4e7b5c94eca944be9cd23dfc752</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/rds/rds.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>b9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/rds/rds.h?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>net/rds/rds.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/rds.h?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rds/rds.h?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752&amp;id2=030305d69fc6963c16003f50d7e8d74b02d0a143'>diff</a>)</td></tr></table>
<div class='commit-subject'>PCI/MSI: Don't apply affinity if there aren't enough vectors left</div><div class='commit-msg'>Bart reported a problem wіth an out of bounds access in the low-level IRQ
affinity code, which we root caused to the qla2xxx driver assigning all its
MSI-X vectors to the pre and post vectors, and not having any left for the
actually spread IRQs.

Fix this issue by not asking for affinity assignment when there are no
vectors to assign left.

Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()")
Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com
Reported-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Tested-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>Diffstat</a> (limited to 'net/rds/rds.h')</div><table summary='diffstat' class='diffstat'>