/* Masquerade.  Simple mapping which alters range to a local IP address
   (depending on route). */

/* (C) 1999-2001 Paul `Rusty' Russell
 * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/types.h>
#include <linux/inetdevice.h>
#include <linux/ip.h>
#include <linux/timer.h>
#include <linux/module.h>
#include <linux/netfilter.h>
#include <net/protocol.h>
#include <net/ip.h>
#include <net/checksum.h>
#include <net/route.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter/x_tables.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/ipv4/nf_nat_masquerade.h>

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
MODULE_DESCRIPTION("Xtables: automatic-address SNAT");

/* FIXME: Multiple targets. --RR */
static int masquerade_tg_check(const struct xt_tgchk_param *par)
{
	const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;

	if (mr->range[0].flags & NF_NAT_RANGE_MAP_IPS) {
		pr_debug("bad MAP_IPS.\n");
		return -EINVAL;
	}
	if (mr->rangesize != 1) {
		pr_debug("bad rangesize %u\n", mr->rangesize);
		return -EINVAL;
	}
	return nf_ct_netns_get(par->net, par->family);
}

static unsigned int
masquerade_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
	struct nf_nat_range range;
	const struct nf_nat_ipv4_multi_range_compat *mr;

	mr = par->targinfo;
	range.flags = mr->range[0].flags;
	range.min_proto = mr->range[0].min;
	range.max_proto = mr->range[0].max;

	return nf_nat_masquerade_ipv4(skb, xt_hooknum(par), &range,
				      xt_out(par));
}

static void masquerade_tg_destroy(const struct xt_tgdtor_param *par)
{
	nf_ct_netns_put(par->net, par->family);
}

static struct xt_target masquerade_tg_reg __read_mostly = {
	.name		= "MASQUERADE",
	.family		= NFPROTO_IPV4,
	.target		= masquerade_tg,
	.targetsize	= sizeof(struct nf_nat_ipv4_multi_range_compat),
	.table		= "nat",
	.hooks		= 1 << NF_INET_POST_ROUTING,
	.checkentry	= masquerade_tg_check,
	.destroy	= masquerade_tg_destroy,
	.me		= THIS_MODULE,
};

static int __init masquerade_tg_init(void)
{
	int ret;

	ret = xt_register_target(&masquerade_tg_reg);

	if (ret == 0)
		nf_nat_masquerade_ipv4_register_notifier();

	return ret;
}

static void __exit masquerade_tg_exit(void)
{
	xt_unregister_target(&masquerade_tg_reg);
	nf_nat_masquerade_ipv4_unregister_notifier();
}

module_init(masquerade_tg_init);
module_exit(masquerade_tg_exit);
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/irda?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>irda</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irnet?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>irnet</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irnet/irnet_irda.h?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>irnet_irda.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'/><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>Eyal Itkin &lt;eyal.itkin@gmail.com&gt;</td><td class='right'>2017-02-07 16:43:05 +0300</td></tr>
<tr><th>committer</th><td>Doug Ledford &lt;dledford@redhat.com&gt;</td><td class='right'>2017-02-08 12:28:30 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irnet/irnet_irda.h?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>628f07d33c1f2e7bf31e0a4a988bb07914bd5e73</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/irda/irnet/irnet_irda.h?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>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=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>c228c66498f9a4562093fbbf80a41bcede0c06f2</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/irda/irnet/irnet_irda.h?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>net/irda/irnet/irnet_irda.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irnet/irnet_irda.h?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>b4cfe3971f6eab542dd7ecc398bfa1aeec889934</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/irda/irnet/irnet_irda.h?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73&amp;id2=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>diff</a>)</td></tr></table>
<div class='commit-subject'>IB/rxe: Fix resid update</div><div class='commit-msg'>Update the response's resid field when larger than MTU, instead of only
updating the local resid variable.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Eyal Itkin &lt;eyal.itkin@gmail.com&gt;
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Reviewed-by: Leon Romanovsky &lt;leonro@mellanox.com&gt;
Signed-off-by: Doug Ledford &lt;dledford@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>Diffstat</a> (limited to 'net/irda/irnet/irnet_irda.h')</div><table summary='diffstat' class='diffstat'>