/*
 * 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(0, 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");
}
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<tr><th>author</th><td>Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;</td><td class='right'>2015-11-18 17:38:49 -0300</td></tr>
<tr><th>committer</th><td>Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;</td><td class='right'>2015-11-18 17:38:49 -0300</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/tests/bpf.c?id=916d4092a1d2d7bb50630497be71ee4c4c2807fa'>916d4092a1d2d7bb50630497be71ee4c4c2807fa</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/tests/bpf.c?id=916d4092a1d2d7bb50630497be71ee4c4c2807fa'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=916d4092a1d2d7bb50630497be71ee4c4c2807fa'>da3db47ff4efc5abc196bfb503300192cd79628d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/tests/bpf.c?id=916d4092a1d2d7bb50630497be71ee4c4c2807fa'>tools/perf/tests/bpf.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/tests/bpf.c?id=e15bf88a44d1fcb685754b2868b1cd28927af3aa'>e15bf88a44d1fcb685754b2868b1cd28927af3aa</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/tests/bpf.c?id=916d4092a1d2d7bb50630497be71ee4c4c2807fa&amp;id2=e15bf88a44d1fcb685754b2868b1cd28927af3aa'>diff</a>)</td></tr></table>
<div class='commit-subject'>perf test: Fix build of BPF and LLVM on older glibc libraries</div><div class='commit-msg'>  $ rpm -q glibc
  glibc-2.12-1.166.el6_7.1.x86_64

&lt;SNIP&gt;
    CC       /tmp/build/perf/tests/llvm.o
  cc1: warnings being treated as errors
  tests/llvm.c: In function ‘test_llvm__fetch_bpf_obj’:
  tests/llvm.c:53: error: declaration of ‘index’ shadows a global declaration
  /usr/include/string.h:489: error: shadowed declaration is here
&lt;SNIP&gt;
    CC       /tmp/build/perf/tests/bpf.o
  cc1: warnings being treated as errors
  tests/bpf.c: In function ‘__test__bpf’:
  tests/bpf.c:149: error: declaration of ‘index’ shadows a global declaration
  /usr/include/string.h:489: error: shadowed declaration is here
&lt;SNIP&gt;

Cc: He Kuang &lt;hekuang@huawei.com&gt;
Cc: Jiri Olsa &lt;jolsa@kernel.org&gt;
Cc: Namhyung Kim &lt;namhyung@kernel.org&gt;
Cc: pi3orama@163.com
Cc: Wang Nan &lt;wangnan0@huawei.com&gt;
Cc: Zefan Li &lt;lizefan@huawei.com&gt;
Fixes: b31de018a628 ("perf test: Enhance the LLVM test: update basic BPF test program")
Fixes: ba1fae431e74 ("perf test: Add 'perf test BPF'")
Link: http://lkml.kernel.org/n/tip-akpo4r750oya2phxoh9e3447@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=916d4092a1d2d7bb50630497be71ee4c4c2807fa'>Diffstat</a> (limited to 'tools/perf/tests/bpf.c')</div><table summary='diffstat' class='diffstat'>