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authorBjörn Töpel <bjorn.topel@intel.com>2018-08-28 14:44:35 +0200
committerAlexei Starovoitov <ast@kernel.org>2018-08-29 12:25:53 -0700
commit58c50ae4a0b638ebbcdddf03cfa4fd36f0edeb02 (patch)
tree57ce4ca973b0149808ac312a2642086424489a12 /samples
parent1328dcddbd53900481994f4c4d8b79e64477965e (diff)
downloadlinux-stericsson-58c50ae4a0b638ebbcdddf03cfa4fd36f0edeb02.tar.gz
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: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/xdpsock_user.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index 4914788b6727..b3906111bedb 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -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]));
}