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samples/bpf: adjust rlimit RLIMIT_MEMLOCK for xdp1

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Default rlimit RLIMIT_MEMLOCK is 64KB, causes bpf map failure.
e.g.
[root@lab bpf]#./xdp1 -N $(</sys/class/net/eth2/ifindex)
failed to create a map: 1 Operation not permitted

Fix it.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tushar Dave 2017-10-27 16:12:30 -07:00 committed by David S. Miller
parent 5c1a6eaf0d
commit 6dfca831c0
1 changed files with 8 additions and 0 deletions
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8
samples/bpf/xdp1_user.c
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@ -14,6 +14,7 @@
#include <string.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
#include "bpf_load.h"
#include "bpf_util.h"
@ -69,6 +70,7 @@ static void usage(const char *prog)
int main(int argc, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
const char *optstr = "SN";
char filename[256];
int opt;
@ -91,6 +93,12 @@ int main(int argc, char **argv)
usage(basename(argv[0]));
return 1;
}
if (setrlimit(RLIMIT_MEMLOCK, &r)) {
perror("setrlimit(RLIMIT_MEMLOCK)");
return 1;
}
ifindex = strtoul(argv[optind], NULL, 0);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);