Commit 58c50ae4 authored by Björn Töpel's avatar Björn Töpel Committed by Alexei Starovoitov
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samples/bpf: add -c/--copy -z/--zero-copy flags to xdpsock 



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

Signed-off-by: default avatarBjörn Töpel <bjorn.topel@intel.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 1328dcdd

samples/bpf/xdpsock_user.c

+11 −1
Original line number Diff line number Diff line
@@ -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]));

		}