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traffic-pacing-edt: implement option for --remove

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Need quick way to remove before testing on production.

Signed-off-by: Jesper D. Brouer <netoptimizer@brouer.com>
This commit is contained in:
Jesper D. Brouer
2020-12-15 19:34:03 +01:00
parent c8682ec27f
commit b3ebc2c18c
1 changed files with 26 additions and 3 deletions
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29
traffic-pacing-edt/xdp_cpumap_loader.c
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@@ -42,6 +42,7 @@ static const struct option long_options[] = {
{"dev", required_argument, NULL, 'd' },
{"qsize", required_argument, NULL, 'q' },
{"force", no_argument, NULL, 'F' },
{"remove", no_argument, NULL, 'r' },
{0, 0, NULL, 0 }
};
@@ -125,7 +126,21 @@ int do_xdp_attach(int ifindex, struct bpf_program *prog, __u32 xdp_flags)
err = bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags);
if (err) {
fprintf(stderr, "link set xdp fd failed (err:%d)\n", err);
fprintf(stderr, "%s(): link set xdp fd failed (err:%d)\n",
__func__, err);
return EXIT_FAIL_XDP;
}
return EXIT_OK;
}
int do_xdp_detach(int ifindex, __u32 xdp_flags)
{
int err;
err = bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
if (err) {
fprintf(stderr, "%s(): link set xdp fd failed (err:%d)\n",
__func__, err);
return EXIT_FAIL_XDP;
}
return EXIT_OK;
@@ -134,6 +149,7 @@ int do_xdp_attach(int ifindex, struct bpf_program *prog, __u32 xdp_flags)
int main(int argc, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
bool do_detach = false;
int opt, longindex = 0;
__u32 cfg_qsize = 512;
char buf[100];
@@ -145,6 +161,9 @@ int main(int argc, char **argv)
int n_cpus = get_nprocs_conf();
/* Always use XDP native driver mode */
xdp_flags |= XDP_FLAGS_DRV_MODE;
obj = bpf_object__open_file("xdp_cpumap_qinq.o", NULL);
err = libbpf_get_error(obj);
if (err) {
@@ -179,6 +198,9 @@ int main(int argc, char **argv)
case 'F':
xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
break;
case 'r':
do_detach = true;
break;
case 'h':
error:
default:
@@ -193,13 +215,14 @@ int main(int argc, char **argv)
return EXIT_FAIL_OPTION;
}
if (do_detach)
return do_xdp_detach(ifindex, xdp_flags);
if (setrlimit(RLIMIT_MEMLOCK, &r)) {
perror("setrlimit(RLIMIT_MEMLOCK)");
return EXIT_FAIL_MEM;
}
/* Always use XDP native driver mode */
xdp_flags |= XDP_FLAGS_DRV_MODE;
obj = do_load_bpf_obj(obj);
if (!obj)