@@ -1,2 +1,3 @@
# SPDX-License-Identifier: GPL-2.0-only
+napi_id_helper
xdp_helper
@@ -6,9 +6,13 @@ TEST_INCLUDES := $(wildcard lib/py/*.py) \
../../net/net_helper.sh \
../../net/lib.sh \
-TEST_GEN_FILES := xdp_helper
+TEST_GEN_FILES := \
+ napi_id_helper \
+ xdp_helper \
+# end of TEST_GEN_FILES
TEST_PROGS := \
+ napi_id.py \
netcons_basic.sh \
netcons_fragmented_msg.sh \
netcons_overflow.sh \
new file mode 100755
@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+from lib.py import ksft_run, ksft_exit
+from lib.py import ksft_eq, NetDrvEpEnv
+from lib.py import bkg, cmd, rand_port, NetNSEnter
+
+def test_napi_id(cfg) -> None:
+ port = rand_port()
+ bin_remote = cfg.remote.deploy(cfg.test_dir / "napi_id_helper")
+ listen_cmd = f"{bin_remote} {cfg.addr_v['4']} {port}"
+
+ with bkg(listen_cmd, ksft_wait=3) as server:
+ cmd(f"echo a | socat - TCP:{cfg.addr_v['4']}:{port}", host=cfg.remote, shell=True)
+
+ ksft_eq(0, server.ret)
+
+def main() -> None:
+ with NetDrvEpEnv(__file__) as cfg:
+ ksft_run([test_napi_id], args=(cfg,))
+ ksft_exit()
+
+if __name__ == "__main__":
+ main()
new file mode 100644
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+
+#include "ksft.h"
+
+int main(int argc, char *argv[])
+{
+ struct sockaddr_in address;
+ unsigned int napi_id;
+ unsigned int port;
+ socklen_t optlen;
+ char buf[1024];
+ int opt = 1;
+ int server;
+ int client;
+ int ret;
+
+ server = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if (server < 0) {
+ perror("socket creation failed");
+ if (errno == EAFNOSUPPORT)
+ return -1;
+ return 1;
+ }
+
+ port = atoi(argv[2]);
+
+ if (setsockopt(server, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt))) {
+ perror("setsockopt");
+ return 1;
+ }
+
+ address.sin_family = AF_INET;
+ inet_pton(AF_INET, argv[1], &address.sin_addr);
+ address.sin_port = htons(port);
+
+ if (bind(server, (struct sockaddr *)&address, sizeof(address)) < 0) {
+ perror("bind failed");
+ return 1;
+ }
+
+ if (listen(server, 1) < 0) {
+ perror("listen");
+ return 1;
+ }
+
+ ksft_ready();
+
+ client = accept(server, NULL, 0);
+ if (client < 0) {
+ perror("accept");
+ return 1;
+ }
+
+ optlen = sizeof(napi_id);
+ ret = getsockopt(client, SOL_SOCKET, SO_INCOMING_NAPI_ID, &napi_id,
+ &optlen);
+ if (ret != 0) {
+ perror("getsockopt");
+ return 1;
+ }
+
+ read(client, buf, 1024);
+
+ ksft_wait();
+
+ if (napi_id == 0) {
+ fprintf(stderr, "napi ID is 0\n");
+ return 1;
+ }
+
+ close(client);
+ close(server);
+
+ return 0;
+}
Test that the SO_INCOMING_NAPI_ID of a network file descriptor is non-zero. This ensures that either the core networking stack or, in some cases like netdevsim, the driver correctly sets the NAPI ID. Signed-off-by: Joe Damato <jdamato@fastly.com> --- .../testing/selftests/drivers/net/.gitignore | 1 + tools/testing/selftests/drivers/net/Makefile | 6 +- .../testing/selftests/drivers/net/napi_id.py | 24 ++++++ .../selftests/drivers/net/napi_id_helper.c | 83 +++++++++++++++++++ 4 files changed, 113 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/drivers/net/napi_id.py create mode 100644 tools/testing/selftests/drivers/net/napi_id_helper.c