Commit 2b6d490b authored by Joe Damato's avatar Joe Damato Committed by Jakub Kicinski
Browse files

selftests: drv-net: Factor out ksft C helpers 



Factor ksft C helpers to a header so they can be used by other C-based
tests.

Signed-off-by: default avatarJoe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20250424002746.16891-3-jdamato@fastly.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f71c549b

tools/testing/selftests/drivers/net/ksft.h

0 → 100644
+56 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#if !defined(__NET_KSFT_H__)

#define __NET_KSFT_H__



#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>



static inline void ksft_ready(void)

{

	const char msg[7] = "ready\n";

	char *env_str;

	int fd;



	env_str = getenv("KSFT_READY_FD");

	if (env_str) {

		fd = atoi(env_str);

		if (!fd) {

			fprintf(stderr, "invalid KSFT_READY_FD = '%s'\n",

				env_str);

			return;

		}

	} else {

		fd = STDOUT_FILENO;

	}



	write(fd, msg, sizeof(msg));

	if (fd != STDOUT_FILENO)

		close(fd);

}



static inline void ksft_wait(void)

{

	char *env_str;

	char byte;

	int fd;



	env_str = getenv("KSFT_WAIT_FD");

	if (env_str) {

		fd = atoi(env_str);

		if (!fd) {

			fprintf(stderr, "invalid KSFT_WAIT_FD = '%s'\n",

				env_str);

			return;

		}

	} else {

		/* Not running in KSFT env, wait for input from STDIN instead */

		fd = STDIN_FILENO;

	}



	read(fd, &byte, sizeof(byte));

	if (fd != STDIN_FILENO)

		close(fd);

}



#endif

tools/testing/selftests/drivers/net/xdp_helper.c

+2 −47
Original line number Diff line number Diff line
@@ -11,56 +11,11 @@ 
#include <net/if.h>

#include <inttypes.h>



#include "ksft.h"



#define UMEM_SZ (1U << 16)

#define NUM_DESC (UMEM_SZ / 2048)



/* Move this to a common header when reused! */

static void ksft_ready(void)

{

	const char msg[7] = "ready\n";

	char *env_str;

	int fd;



	env_str = getenv("KSFT_READY_FD");

	if (env_str) {

		fd = atoi(env_str);

		if (!fd) {

			fprintf(stderr, "invalid KSFT_READY_FD = '%s'\n",

				env_str);

			return;

		}

	} else {

		fd = STDOUT_FILENO;

	}



	write(fd, msg, sizeof(msg));

	if (fd != STDOUT_FILENO)

		close(fd);

}



static void ksft_wait(void)

{

	char *env_str;

	char byte;

	int fd;



	env_str = getenv("KSFT_WAIT_FD");

	if (env_str) {

		fd = atoi(env_str);

		if (!fd) {

			fprintf(stderr, "invalid KSFT_WAIT_FD = '%s'\n",

				env_str);

			return;

		}

	} else {

		/* Not running in KSFT env, wait for input from STDIN instead */

		fd = STDIN_FILENO;

	}



	read(fd, &byte, sizeof(byte));

	if (fd != STDIN_FILENO)

		close(fd);

}



/* this is a simple helper program that creates an XDP socket and does the

 * minimum necessary to get bind() to succeed.