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samples/bpf: xdpsock: Add duration option to specify how long to run

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The application now supports '-d' or '--duration' option to specify number of
seconds to run. This is used in tx, rx and l2fwd features. If this option is
not provided, the application runs forever.

Signed-off-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191220085530.4980-2-jay.jayatheerthan@intel.com
This commit is contained in:
Jay Jayatheerthan 2019-12-20 14:25:25 +05:30 committed by Alexei Starovoitov
parent 478bee0df0
commit d3f11b018f
1 changed files with 35 additions and 2 deletions
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37
samples/bpf/xdpsock_user.c
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@ -65,6 +65,9 @@ static u32 opt_xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
static const char *opt_if = "";
static int opt_ifindex;
static int opt_queue;
static unsigned long opt_duration;
static unsigned long start_time;
static bool benchmark_done;
static int opt_poll;
static int opt_interval = 1;
static u32 opt_xdp_bind_flags = XDP_USE_NEED_WAKEUP;
@ -167,10 +170,21 @@ static void dump_stats(void)
}
}
static bool is_benchmark_done(void)
{
if (opt_duration > 0) {
unsigned long dt = (get_nsecs() - start_time);
if (dt >= opt_duration)
benchmark_done = true;
}
return benchmark_done;
}
static void *poller(void *arg)
{
(void)arg;
for (;;) {
while (!is_benchmark_done()) {
sleep(opt_interval);
dump_stats();
}
@ -375,6 +389,7 @@ static struct option long_options[] = {
{"unaligned", no_argument, 0, 'u'},
{"shared-umem", no_argument, 0, 'M'},
{"force", no_argument, 0, 'F'},
{"duration", required_argument, 0, 'd'},
{0, 0, 0, 0}
};
@ -399,6 +414,8 @@ static void usage(const char *prog)
" -u, --unaligned Enable unaligned chunk placement\n"
" -M, --shared-umem Enable XDP_SHARED_UMEM\n"
" -F, --force Force loading the XDP prog\n"
" -d, --duration=n Duration in secs to run command.\n"
" Default: forever.\n"
"\n";
fprintf(stderr, str, prog, XSK_UMEM__DEFAULT_FRAME_SIZE);
exit(EXIT_FAILURE);
@ -411,7 +428,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
c = getopt_long(argc, argv, "Frtli:q:psSNn:czf:muM",
c = getopt_long(argc, argv, "Frtli:q:psSNn:czf:muMd:",
long_options, &option_index);
if (c == -1)
break;
@ -469,6 +486,10 @@ static void parse_command_line(int argc, char **argv)
case 'M':
opt_num_xsks = MAX_SOCKS;
break;
case 'd':
opt_duration = atoi(optarg);
opt_duration *= 1000000000;
break;
default:
usage(basename(argv[0]));
}
@ -622,6 +643,9 @@ static void rx_drop_all(void)
for (i = 0; i < num_socks; i++)
rx_drop(xsks[i], fds);
if (benchmark_done)
break;
}
}
@ -671,6 +695,9 @@ static void tx_only_all(void)
for (i = 0; i < num_socks; i++)
tx_only(xsks[i], frame_nb[i]);
if (benchmark_done)
break;
}
}
@ -739,6 +766,9 @@ static void l2fwd_all(void)
for (i = 0; i < num_socks; i++)
l2fwd(xsks[i], fds);
if (benchmark_done)
break;
}
}
@ -852,6 +882,7 @@ int main(int argc, char **argv)
exit_with_error(ret);
prev_time = get_nsecs();
start_time = prev_time;
if (opt_bench == BENCH_RXDROP)
rx_drop_all();
@ -860,5 +891,7 @@ int main(int argc, char **argv)
else
l2fwd_all();
pthread_join(pt, NULL);
return 0;
}