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Miller" , Eric Dumazet , Shuah Khan , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , linux-kernel@vger.kernel.org (open list), linux-kselftest@vger.kernel.org (open list:KERNEL SELFTEST FRAMEWORK), bpf@vger.kernel.org (open list:XDP (eXpress Data Path):Keyword:(?:\b|_)xdp(?:\b|_)) Subject: [PATCH net-next v4 2/3] selftests: drv-net: Factor out ksft C helpers Date: Thu, 24 Apr 2025 00:27:32 +0000 Message-ID: <20250424002746.16891-3-jdamato@fastly.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250424002746.16891-1-jdamato@fastly.com> References: <20250424002746.16891-1-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Factor ksft C helpers to a header so they can be used by other C-based tests. Signed-off-by: Joe Damato --- tools/testing/selftests/drivers/net/ksft.h | 56 +++++++++++++++++++ .../selftests/drivers/net/xdp_helper.c | 49 +--------------- 2 files changed, 58 insertions(+), 47 deletions(-) create mode 100644 tools/testing/selftests/drivers/net/ksft.h diff --git a/tools/testing/selftests/drivers/net/ksft.h b/tools/testing/sel= ftests/drivers/net/ksft.h new file mode 100644 index 000000000000..c30a02da903f --- /dev/null +++ b/tools/testing/selftests/drivers/net/ksft.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#if !defined(__NET_KSFT_H__) +#define __NET_KSFT_H__ + +#include +#include +#include + +static void ksft_ready(void) +{ + const char msg[7] =3D "ready\n"; + char *env_str; + int fd; + + env_str =3D getenv("KSFT_READY_FD"); + if (env_str) { + fd =3D atoi(env_str); + if (!fd) { + fprintf(stderr, "invalid KSFT_READY_FD =3D '%s'\n", + env_str); + return; + } + } else { + fd =3D STDOUT_FILENO; + } + + write(fd, msg, sizeof(msg)); + if (fd !=3D STDOUT_FILENO) + close(fd); +} + +static void ksft_wait(void) +{ + char *env_str; + char byte; + int fd; + + env_str =3D getenv("KSFT_WAIT_FD"); + if (env_str) { + fd =3D atoi(env_str); + if (!fd) { + fprintf(stderr, "invalid KSFT_WAIT_FD =3D '%s'\n", + env_str); + return; + } + } else { + /* Not running in KSFT env, wait for input from STDIN instead */ + fd =3D STDIN_FILENO; + } + + read(fd, &byte, sizeof(byte)); + if (fd !=3D STDIN_FILENO) + close(fd); +} + +#endif diff --git a/tools/testing/selftests/drivers/net/xdp_helper.c b/tools/testi= ng/selftests/drivers/net/xdp_helper.c index aeed25914104..d5bb8ac33efa 100644 --- a/tools/testing/selftests/drivers/net/xdp_helper.c +++ b/tools/testing/selftests/drivers/net/xdp_helper.c @@ -11,56 +11,11 @@ #include #include =20 +#include "ksft.h" + #define UMEM_SZ (1U << 16) #define NUM_DESC (UMEM_SZ / 2048) =20 -/* Move this to a common header when reused! */ -static void ksft_ready(void) -{ - const char msg[7] =3D "ready\n"; - char *env_str; - int fd; - - env_str =3D getenv("KSFT_READY_FD"); - if (env_str) { - fd =3D atoi(env_str); - if (!fd) { - fprintf(stderr, "invalid KSFT_READY_FD =3D '%s'\n", - env_str); - return; - } - } else { - fd =3D STDOUT_FILENO; - } - - write(fd, msg, sizeof(msg)); - if (fd !=3D STDOUT_FILENO) - close(fd); -} - -static void ksft_wait(void) -{ - char *env_str; - char byte; - int fd; - - env_str =3D getenv("KSFT_WAIT_FD"); - if (env_str) { - fd =3D atoi(env_str); - if (!fd) { - fprintf(stderr, "invalid KSFT_WAIT_FD =3D '%s'\n", - env_str); - return; - } - } else { - /* Not running in KSFT env, wait for input from STDIN instead */ - fd =3D STDIN_FILENO; - } - - read(fd, &byte, sizeof(byte)); - if (fd !=3D STDIN_FILENO) - close(fd); -} =20 /* this is a simple helper program that creates an XDP socket and does the * minimum necessary to get bind() to succeed. --=20 2.43.0