bpf: sockmap set rlimit

Avoid extra step of setting limit from cmdline and do it directly in
the program.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/samples/sockmap/sockmap_user.c b/samples/sockmap/sockmap_user.c
index fe943c903310..7c25c0c112bc 100644
--- a/samples/sockmap/sockmap_user.c
+++ b/samples/sockmap/sockmap_user.c
@@ -27,6 +27,7 @@
 #include <time.h>
 
 #include <sys/time.h>
+#include <sys/resource.h>
 #include <sys/types.h>
 
 #include <linux/netlink.h>
@@ -447,6 +448,7 @@ enum {
 int main(int argc, char **argv)
 {
         int iov_count = 1, length = 1024, rate = 1, verbose = 0;
+        struct rlimit r = {10 * 1024 * 1024, RLIM_INFINITY};
         int opt, longindex, err, cg_fd = 0;
         int test = PING_PONG;
         char filename[256];
@@ -501,6 +503,11 @@ int main(int argc, char **argv)
                 return -1;
         }
 
+        if (setrlimit(RLIMIT_MEMLOCK, &r)) {
+                perror("setrlimit(RLIMIT_MEMLOCK)");
+                return 1;
+        }
+
         snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
 
         running = 1;