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samples/bpf: add -c/--copy -z/--zero-copy flags to xdpsock

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The -c/--copy -z/--zero-copy flags enforces either copy or zero-copy
mode.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Björn Töpel 2018-08-28 14:44:35 +02:00 committed by Alexei Starovoitov
parent 1328dcddbd
commit 58c50ae4a0
1 changed files with 11 additions and 1 deletions
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12
samples/bpf/xdpsock_user.c
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@ -649,6 +649,8 @@ static struct option long_options[] = {
{"xdp-skb", no_argument, 0, 'S'},
{"xdp-native", no_argument, 0, 'N'},
{"interval", required_argument, 0, 'n'},
{"zero-copy", no_argument, 0, 'z'},
{"copy", no_argument, 0, 'c'},
{0, 0, 0, 0}
};
@ -667,6 +669,8 @@ static void usage(const char *prog)
" -S, --xdp-skb=n Use XDP skb-mod\n"
" -N, --xdp-native=n Enfore XDP native mode\n"
" -n, --interval=n Specify statistics update interval (default 1 sec).\n"
" -z, --zero-copy Force zero-copy mode.\n"
" -c, --copy Force copy mode.\n"
"\n";
fprintf(stderr, str, prog);
exit(EXIT_FAILURE);
@ -679,7 +683,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
c = getopt_long(argc, argv, "rtli:q:psSNn:", long_options,
c = getopt_long(argc, argv, "rtli:q:psSNn:cz", long_options,
&option_index);
if (c == -1)
break;
@ -716,6 +720,12 @@ static void parse_command_line(int argc, char **argv)
case 'n':
opt_interval = atoi(optarg);
break;
case 'z':
opt_xdp_bind_flags |= XDP_ZEROCOPY;
break;
case 'c':
opt_xdp_bind_flags |= XDP_COPY;
break;
default:
usage(basename(argv[0]));
}