diff options
| author | brakmo <brakmo@fb.com> | 2019-05-28 16:59:39 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-05-31 16:41:29 -0700 |
| commit | ffd81558d56c611b1e93f856c77f42046a2deab5 (patch) | |
| tree | f3c30120e3d5afdf625d155ea139b9851a2b2104 /samples/bpf/hbm.c | |
| parent | 956fe2190820df3a6ee530204e059da508159319 (diff) | |
bpf: Add cn support to hbm_out_kern.c
Update hbm_out_kern.c to support returning cn notifications.
Also updates relevant files to allow disabling cn notifications.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples/bpf/hbm.c')
| -rw-r--r-- | samples/bpf/hbm.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/samples/bpf/hbm.c b/samples/bpf/hbm.c index a79828ab273f..c5629bae67ab 100644 --- a/samples/bpf/hbm.c +++ b/samples/bpf/hbm.c @@ -16,6 +16,7 @@ * -l Also limit flows doing loopback * -n <#> To create cgroup \"/hbm#\" and attach prog * Default is /hbm1 + * --no_cn Do not return cn notifications * -r <rate> Rate limit in Mbps * -s Get HBM stats (marked, dropped, etc.) * -t <time> Exit after specified seconds (default is 0) @@ -42,6 +43,7 @@ #include <linux/bpf.h> #include <bpf/bpf.h> +#include <getopt.h> #include "bpf_load.h" #include "bpf_rlimit.h" @@ -59,6 +61,7 @@ bool stats_flag; bool loopback_flag; bool debugFlag; bool work_conserving_flag; +bool no_cn_flag; static void Usage(void); static void read_trace_pipe2(void); @@ -185,6 +188,7 @@ static int run_bpf_prog(char *prog, int cg_id) qstats.rate = rate; qstats.stats = stats_flag ? 1 : 0; qstats.loopback = loopback_flag ? 1 : 0; + qstats.no_cn = no_cn_flag ? 1 : 0; if (bpf_map_update_elem(map_fd, &key, &qstats, BPF_ANY)) { printf("ERROR: Could not update map element\n"); goto err; @@ -366,14 +370,15 @@ static void Usage(void) { printf("This program loads a cgroup skb BPF program to enforce\n" "cgroup output (egress) bandwidth limits.\n\n" - "USAGE: hbm [-o] [-d] [-l] [-n <id>] [-r <rate>] [-s]\n" - " [-t <secs>] [-w] [-h] [prog]\n" + "USAGE: hbm [-o] [-d] [-l] [-n <id>] [--no_cn] [-r <rate>]\n" + " [-s] [-t <secs>] [-w] [-h] [prog]\n" " Where:\n" " -o indicates egress direction (default)\n" " -d print BPF trace debug buffer\n" " -l also limit flows using loopback\n" " -n <#> to create cgroup \"/hbm#\" and attach prog\n" " Default is /hbm1\n" + " --no_cn disable CN notifcations\n" " -r <rate> Rate in Mbps\n" " -s Update HBM stats\n" " -t <time> Exit after specified seconds (default is 0)\n" @@ -393,9 +398,16 @@ int main(int argc, char **argv) int k; int cg_id = 1; char *optstring = "iodln:r:st:wh"; + struct option loptions[] = { + {"no_cn", 0, NULL, 1}, + {NULL, 0, NULL, 0} + }; - while ((k = getopt(argc, argv, optstring)) != -1) { + while ((k = getopt_long(argc, argv, optstring, loptions, NULL)) != -1) { switch (k) { + case 1: + no_cn_flag = true; + break; case'o': break; case 'd': |