mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-04-15 15:27:41 +07:00
33181bb8e8
Move the following routines that let us start a background listener thread and connect to a server by fd to the test_prog: * start_server - socket+bind+listen * connect_to_fd - connect to the server identified by fd These will be used in the next commit. Also, extend these helpers to support AF_INET6 and accept the family as an argument. v5: * drop pthread.h (Martin KaFai Lau) * add SO_SNDTIMEO (Martin KaFai Lau) v4: * export extra helper to start server without a thread (Martin KaFai Lau) * tcp_rtt is no longer starting background thread (Martin KaFai Lau) v2: * put helpers into network_helpers.c (Andrii Nakryiko) Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrey Ignatov <rdna@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20200508174611.228805-2-sdf@google.com
94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <linux/err.h>
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#include <linux/in.h>
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#include <linux/in6.h>
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#include "network_helpers.h"
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#define clean_errno() (errno == 0 ? "None" : strerror(errno))
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#define log_err(MSG, ...) fprintf(stderr, "(%s:%d: errno: %s) " MSG "\n", \
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__FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)
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int start_server(int family, int type)
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{
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struct sockaddr_storage addr = {};
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socklen_t len;
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int fd;
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if (family == AF_INET) {
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struct sockaddr_in *sin = (void *)&addr;
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sin->sin_family = AF_INET;
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len = sizeof(*sin);
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} else {
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struct sockaddr_in6 *sin6 = (void *)&addr;
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sin6->sin6_family = AF_INET6;
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len = sizeof(*sin6);
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}
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fd = socket(family, type | SOCK_NONBLOCK, 0);
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if (fd < 0) {
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log_err("Failed to create server socket");
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return -1;
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}
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if (bind(fd, (const struct sockaddr *)&addr, len) < 0) {
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log_err("Failed to bind socket");
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close(fd);
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return -1;
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}
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if (type == SOCK_STREAM) {
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if (listen(fd, 1) < 0) {
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log_err("Failed to listed on socket");
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close(fd);
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return -1;
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}
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}
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return fd;
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}
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static const struct timeval timeo_sec = { .tv_sec = 3 };
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static const size_t timeo_optlen = sizeof(timeo_sec);
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int connect_to_fd(int family, int type, int server_fd)
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{
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struct sockaddr_storage addr;
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socklen_t len = sizeof(addr);
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int fd;
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fd = socket(family, type, 0);
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if (fd < 0) {
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log_err("Failed to create client socket");
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return -1;
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}
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if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeo_sec, timeo_optlen)) {
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log_err("Failed to set SO_RCVTIMEO");
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goto out;
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}
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if (getsockname(server_fd, (struct sockaddr *)&addr, &len)) {
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log_err("Failed to get server addr");
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goto out;
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}
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if (connect(fd, (const struct sockaddr *)&addr, len) < 0) {
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log_err("Fail to connect to server with family %d", family);
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goto out;
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}
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return fd;
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out:
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close(fd);
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return -1;
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}
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