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205c8ada31
This declaration was made in samples/bpf/libbpf.c for convenience, but
there's already one in tools/perf/perf-sys.h. Reuse that one.
Committer notes:
Testing it:
$ make -j4 O=../build/v4.9.0-rc8+ samples/bpf/
make[1]: Entering directory '/home/build/v4.9.0-rc8+'
CHK include/config/kernel.release
GEN ./Makefile
CHK include/generated/uapi/linux/version.h
Using /home/acme/git/linux as source for kernel
CHK include/generated/utsrelease.h
CHK include/generated/timeconst.h
CHK include/generated/bounds.h
CHK include/generated/asm-offsets.h
CALL /home/acme/git/linux/scripts/checksyscalls.sh
HOSTCC samples/bpf/test_verifier.o
HOSTCC samples/bpf/libbpf.o
HOSTCC samples/bpf/../../tools/lib/bpf/bpf.o
HOSTCC samples/bpf/test_maps.o
HOSTCC samples/bpf/sock_example.o
HOSTCC samples/bpf/bpf_load.o
<SNIP>
HOSTLD samples/bpf/trace_event
HOSTLD samples/bpf/sampleip
HOSTLD samples/bpf/tc_l2_redirect
make[1]: Leaving directory '/home/build/v4.9.0-rc8+'
$
Also tested the offwaketime resulting from the rebuild, seems to work as
before.
Signed-off-by: Joe Stringer <joe@ovn.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20161209024620.31660-7-joe@ovn.org
[ Use -I$(srctree)/tools/lib/ to support out of source code tree builds ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
36 lines
803 B
C
36 lines
803 B
C
/* eBPF mini library */
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#include <stdlib.h>
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#include <stdio.h>
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#include <linux/unistd.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <linux/if_packet.h>
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#include <arpa/inet.h>
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#include "libbpf.h"
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int open_raw_sock(const char *name)
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{
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struct sockaddr_ll sll;
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int sock;
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sock = socket(PF_PACKET, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, htons(ETH_P_ALL));
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if (sock < 0) {
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printf("cannot create raw socket\n");
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return -1;
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}
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memset(&sll, 0, sizeof(sll));
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sll.sll_family = AF_PACKET;
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sll.sll_ifindex = if_nametoindex(name);
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sll.sll_protocol = htons(ETH_P_ALL);
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if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
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printf("bind to %s: %s\n", name, strerror(errno));
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close(sock);
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return -1;
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}
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return sock;
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}
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