#include <stdlib.h>
#include <stdio.h>
#include <linux/unistd.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <linux/if_ether.h>
#include <net/if.h>
#include <linux/if_packet.h>
#include <arpa/inet.h>
#include "libbpf.h"

static inline int open_raw_sock(const char *name)
{
	struct sockaddr_ll sll;
	int sock;

	sock = socket(PF_PACKET, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, htons(ETH_P_ALL));
	if (sock < 0) {
		printf("cannot create raw socket\n");
		return -1;
	}

	memset(&sll, 0, sizeof(sll));
	sll.sll_family = AF_PACKET;
	sll.sll_ifindex = if_nametoindex(name);
	sll.sll_protocol = htons(ETH_P_ALL);
	if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
		printf("bind to %s: %s\n", name, strerror(errno));
		close(sock);
		return -1;
	}

	return sock;
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>ipv4</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4/xfrm4_tunnel.c?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>xfrm4_tunnel.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='fe6bce8d30a86c693bf7cfbf4759cbafd121289f'/><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>Joe Perches &lt;joe@perches.com&gt;</td><td class='right'>2016-12-12 14:26:55 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-12 20:41:52 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4/xfrm4_tunnel.c?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>fe6bce8d30a86c693bf7cfbf4759cbafd121289f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ipv4/xfrm4_tunnel.c?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>0870fe4b44e9c2cb57a9883400cea2e7795fe05f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ipv4/xfrm4_tunnel.c?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>net/ipv4/xfrm4_tunnel.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4/xfrm4_tunnel.c?id=f082f02c4731900a5065de69eb0d8cb5aab66196'>f082f02c4731900a5065de69eb0d8cb5aab66196</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ipv4/xfrm4_tunnel.c?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f&amp;id2=f082f02c4731900a5065de69eb0d8cb5aab66196'>diff</a>)</td></tr></table>
<div class='commit-subject'>treewide: Make remaining source files non-executable</div><div class='commit-msg'>.c and .h source files should not be executable, change
the permissions to 0644.

[ This would normally go through Andrew Morton, but his ancient
  patch-based toolchain doesn't do permission changes ]

Signed-off-by: Joe Perches &lt;joe@perches.com&gt;
Acked-by: David Howells &lt;dhowells@redhat.com&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>Diffstat</a> (limited to 'net/ipv4/xfrm4_tunnel.c')</div><table summary='diffstat' class='diffstat'>