diff options
| author | Maciej Fijalkowski <maciejromanfijalkowski@gmail.com> | 2019-02-01 22:42:28 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-02-01 23:37:51 +0100 |
| commit | 743e568c15860d4061202f73214c106a5bb0890b (patch) | |
| tree | f9970c7cb340abbc687848b8e5cfeb7db8da22bf /samples/bpf/xdp_redirect_cpu_user.c | |
| parent | 01dde20ce04b3a18f1e91d6d1ee0ef484d20bbf2 (diff) | |
| download | linux-743e568c15860d4061202f73214c106a5bb0890b.tar.bz2 | |
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/xdp_redirect_cpu_user.c')
| -rw-r--r-- | samples/bpf/xdp_redirect_cpu_user.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c index 8645ddc2da0e..0224afb55845 100644 --- a/samples/bpf/xdp_redirect_cpu_user.c +++ b/samples/bpf/xdp_redirect_cpu_user.c @@ -33,7 +33,7 @@ static int ifindex = -1; static char ifname_buf[IF_NAMESIZE]; static char *ifname; -static __u32 xdp_flags; +static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST; static int cpu_map_fd; static int rx_cnt_map_fd; static int redirect_err_cnt_map_fd; @@ -62,6 +62,7 @@ static const struct option long_options[] = { {"cpu", required_argument, NULL, 'c' }, {"stress-mode", no_argument, NULL, 'x' }, {"no-separators", no_argument, NULL, 'z' }, + {"force", no_argument, NULL, 'F' }, {0, 0, NULL, 0 } }; @@ -651,7 +652,7 @@ int main(int argc, char **argv) mark_cpus_unavailable(); /* Parse commands line args */ - while ((opt = getopt_long(argc, argv, "hSd:", + while ((opt = getopt_long(argc, argv, "hSd:s:p:q:c:xzF", long_options, &longindex)) != -1) { switch (opt) { case 'd': @@ -700,6 +701,9 @@ int main(int argc, char **argv) case 'q': qsize = atoi(optarg); break; + case 'F': + xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST; + break; case 'h': error: default: |