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| author |   Bui Quang Minh <minhquangbui99@gmail.com> | 2025-04-25 14:10:16 +0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-04-28 15:49:10 -0700 |
| commit | 5d346179e709ea688f29b450a918cbf2ead80960 (patch) | |
| tree | 2f93f9ee94424bfb9bc9e7cd07cf4771438701a7 | |
| parent | selftests: net: move xdp_helper to net/lib (diff) | |
| download | wireguard-linux-5d346179e709ea688f29b450a918cbf2ead80960.tar.xz wireguard-linux-5d346179e709ea688f29b450a918cbf2ead80960.zip | |
selftests: net: add flag to force zerocopy mode in xdp_helper
This commit adds an optional -z flag to xdp_helper. When this flag is
provided, the XDP socket binding is forced to be in zerocopy mode.
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20250425071018.36078-3-minhquangbui99@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | tools/testing/selftests/net/lib/xdp_helper.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/testing/selftests/net/lib/xdp_helper.c b/tools/testing/selftests/net/lib/xdp_helper.c index d5bb8ac33efa..6327863cafa6 100644 --- a/tools/testing/selftests/net/lib/xdp_helper.c +++ b/tools/testing/selftests/net/lib/xdp_helper.c @@ -17,6 +17,12 @@ #define NUM_DESC (UMEM_SZ / 2048) +static void print_usage(const char *bin) +{ + fprintf(stderr, "Usage: %s ifindex queue_id [-z]\n\n" + "where:\n\t-z: force zerocopy mode", bin); +} + /* this is a simple helper program that creates an XDP socket and does the * minimum necessary to get bind() to succeed. * @@ -36,8 +42,8 @@ int main(int argc, char **argv) int sock_fd; int queue; - if (argc != 3) { - fprintf(stderr, "Usage: %s ifindex queue_id\n", argv[0]); + if (argc != 3 && argc != 4) { + print_usage(argv[0]); return 1; } @@ -87,6 +93,15 @@ int main(int argc, char **argv) sxdp.sxdp_queue_id = queue; sxdp.sxdp_flags = 0; + if (argc > 3) { + if (!strcmp(argv[3], "-z")) { + sxdp.sxdp_flags = XDP_ZEROCOPY; + } else { + print_usage(argv[0]); + return 1; + } + } + if (bind(sock_fd, (struct sockaddr *)&sxdp, sizeof(sxdp)) != 0) { munmap(umem_area, UMEM_SZ); perror("bind failed"); |