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ee12996c9d
To avoid the following build failure on Alpine Linux 3.4, that has
clang-3.8 with the bpf target:
HOSTCC samples/bpf/sock_example.o
In file included from /usr/include/net/ethernet.h:10:0,
from /git/linux/samples/bpf/sock_example.h:7,
from /git/linux/samples/bpf/sock_example.c:30:
/usr/include/netinet/if_ether.h:96:8: error: redefinition of 'struct
ethhdr'
struct ethhdr {
^
In file included from /git/linux/samples/bpf/sock_example.c:26:0:
./usr/include/linux/if_ether.h:144:8: note: originally defined here
struct ethhdr {
^
scripts/Makefile.host:124: recipe for target
'samples/bpf/sock_example.o' failed
make[2]: *** [samples/bpf/sock_example.o] Error 1
/git/linux/Makefile:1658: recipe for target 'samples/bpf/' failed
So include net/if_ether.h for the needs of sock_example.h, using the
same include that sock_example.c uses.
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Joe Stringer <joe@ovn.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-m9avekl1b651qe1r1zd5tzz9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
36 lines
795 B
C
36 lines
795 B
C
#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 <linux/if_ether.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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static inline 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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