mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
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>
35 lines
795 B
C
35 lines
795 B
C
#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;
|
|
}
|