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authorMaciej Fijalkowski <maciejromanfijalkowski@gmail.com>2019-02-01 22:42:28 +0100
committerDaniel Borkmann <daniel@iogearbox.net>2019-02-01 23:37:51 +0100
commit743e568c15860d4061202f73214c106a5bb0890b (patch)
treef9970c7cb340abbc687848b8e5cfeb7db8da22bf /samples/bpf/xdpsock_user.c
parent01dde20ce04b3a18f1e91d6d1ee0ef484d20bbf2 (diff)
downloadlinux-stericsson-743e568c15860d4061202f73214c106a5bb0890b.tar.gz
samples/bpf: Add a "force" flag to XDP samples
Make xdp samples consistent with iproute2 behavior and set the XDP_FLAGS_UPDATE_IF_NOEXIST by default when setting the xdp program on interface. Provide an option for user to force the program loading, which as a result will not include the mentioned flag in bpf_set_link_xdp_fd call. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'samples/bpf/xdpsock_user.c')
-rw-r--r--samples/bpf/xdpsock_user.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index 57ecadc58403..188723784768 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -68,7 +68,7 @@ enum benchmark_type {
};
static enum benchmark_type opt_bench = BENCH_RXDROP;
-static u32 opt_xdp_flags;
+static u32 opt_xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
static const char *opt_if = "";
static int opt_ifindex;
static int opt_queue;
@@ -682,7 +682,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
- c = getopt_long(argc, argv, "rtli:q:psSNn:cz", long_options,
+ c = getopt_long(argc, argv, "Frtli:q:psSNn:cz", long_options,
&option_index);
if (c == -1)
break;
@@ -725,6 +725,9 @@ static void parse_command_line(int argc, char **argv)
case 'c':
opt_xdp_bind_flags |= XDP_COPY;
break;
+ case 'F':
+ opt_xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(basename(argv[0]));
}