/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <linux/if_ether.h>

#include "xmalloc.h"
#include "die.h"
#include "ring.h"
#include "built_in.h"

void mmap_ring_generic(int sock, struct ring *ring)
{
	ring->mm_space = mmap(NULL, ring->mm_len, PROT_READ | PROT_WRITE,
			      MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0);
	if (ring->mm_space == MAP_FAILED)
		panic("Cannot mmap {TX,RX}_RING!\n");
}

void alloc_ring_frames_generic(struct ring *ring, int num, size_t size)
{
	int i;
	size_t len = num * sizeof(*ring->frames);

	ring->frames = xmalloc_aligned(len, CO_CACHE_LINE_SIZE);
	fmemset(ring->frames, 0, len);

	for (i = 0; i < num; ++i) {
		ring->frames[i].iov_len = size;
		ring->frames[i].iov_base = ring->mm_space + (i * size);
	}
}

void bind_ring_generic(int sock, struct ring *ring, int ifindex)
{
	int ret;
	/* The {TX,RX}_RING registers itself to the networking stack with
	 * dev_add_pack(), so we have one single RX_RING for all devs
	 * otherwise you'll get the packet twice.
	 */
	fmemset(&ring->s_ll, 0, sizeof(ring->s_ll));

	ring->s_ll.sll_family = AF_PACKET;
	ring->s_ll.sll_protocol = htons(ETH_P_ALL);
	ring->s_ll.sll_ifindex = ifindex;
	ring->s_ll.sll_hatype = 0;
	ring->s_ll.sll_halen = 0;
	ring->s_ll.sll_pkttype = 0;

	ret = bind(sock, (struct sockaddr *) &ring->s_ll, sizeof(ring->s_ll));
	if (ret < 0)
		panic("Cannot bind {TX,RX}_RING!\n");
}
/cgit.cgi/linux/net-next.git/refs/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/'>
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'/><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>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-02-05 12:51:07 +0000</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-02-05 12:51:07 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>aacaaa4c8e1cd3b813a3b77c9855e53d96381f40</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>656fb73fa195f877a5e09f37ea60c145b67c56ef</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=3245d460a1eb55b5c3ca31dde7b5c5ac71546edf'>3245d460a1eb55b5c3ca31dde7b5c5ac71546edf</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40&amp;id2=3245d460a1eb55b5c3ca31dde7b5c5ac71546edf'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=320549a22484952d88d4e0320218765b16cd2174'>320549a22484952d88d4e0320218765b16cd2174</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40&amp;id2=320549a22484952d88d4e0320218765b16cd2174'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'fix/mmio' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into regmap-mmio</div><div class='commit-msg'></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=aacaaa4c8e1cd3b813a3b77c9855e53d96381f40'>Diffstat</a></div><table summary='diffstat' class='diffstat'>