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XDP-interaction: Require loading custom BPF program

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Don't allow loading the default xsk BPF-prog if not specifying
any BPF-prog.  We have a need for our own BPf-prog.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
This commit is contained in:
Jesper Dangaard Brouer
2021-11-02 14:34:43 +01:00
parent 5245641946
commit 49c33e775f
1 changed files with 8 additions and 5 deletions
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13
AF_XDP-interaction/af_xdp_user.c
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@@ -604,9 +604,11 @@ int main(int argc, char **argv)
};
struct xsk_umem_info *umem;
struct xsk_socket_info *xsk_socket;
struct bpf_object *bpf_obj = NULL;
pthread_t stats_poll_thread;
struct bpf_object *bpf_obj = NULL;
struct bpf_map *map;
/* Global shutdown handler */
signal(SIGINT, exit_application);
@@ -624,10 +626,11 @@ int main(int argc, char **argv)
if (cfg.do_unload)
return xdp_link_detach(cfg.ifindex, cfg.xdp_flags, 0);
/* Load custom program if configured */
if (cfg.filename[0] != 0) {
struct bpf_map *map;
/* Require loading custom BPF program */
if (cfg.filename[0] == 0) {
fprintf(stderr, "ERROR: must load custom BPF-prog\n");
exit(EXIT_FAILURE);
} else {
bpf_obj = load_bpf_and_xdp_attach(&cfg);
if (!bpf_obj) {
/* Error handling done in load_bpf_and_xdp_attach() */