leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

selftests/xsk: Verify correctness of XDP prog attach point

Browse Source 
To prevent the case we had previously where for TEST_MODE_SKB, XDP prog
was attached in native mode, call bpf_xdp_query() after loading prog and
make sure that attach_mode is as expected.

Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20220629143458.934337-4-maciej.fijalkowski@intel.com
This commit is contained in:
Maciej Fijalkowski 2022-06-29 16:34:57 +02:00 committed by Daniel Borkmann
parent 61333008d0
commit 6d4c767c03
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
tools/testing/selftests/bpf/xdpxceiver.c
View File

@ -1085,6 +1085,7 @@ static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
{
u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
LIBBPF_OPTS(bpf_xdp_query_opts, opts);
int ret, ifindex;
void *bufs;
u32 i;
@ -1134,6 +1135,22 @@ static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
if (ret)
exit_with_error(-ret);
ret = bpf_xdp_query(ifindex, ifobject->xdp_flags, &opts);
if (ret)
exit_with_error(-ret);
if (ifobject->xdp_flags & XDP_FLAGS_SKB_MODE) {
if (opts.attach_mode != XDP_ATTACHED_SKB) {
ksft_print_msg("ERROR: [%s] XDP prog not in SKB mode\n");
exit_with_error(-EINVAL);
}
} else if (ifobject->xdp_flags & XDP_FLAGS_DRV_MODE) {
if (opts.attach_mode != XDP_ATTACHED_DRV) {
ksft_print_msg("ERROR: [%s] XDP prog not in DRV mode\n");
exit_with_error(-EINVAL);
}
}
ret = xsk_socket__update_xskmap(ifobject->xsk->xsk, ifobject->xsk_map_fd);
if (ret)
exit_with_error(-ret);