mirror of
https://github.com/openharmony/kernel_linux_common_modules.git
synced 2026-08-27 01:31:36 -04:00
liangbotong
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2022 Huawei Device Co., Ltd.
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*
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* Description: Demo example of configuring NewIP address.
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*
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* Author: Yang Yanjun <yangyanjun@huawei.com>
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*
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* Data: 2022-07-18
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*/
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "nip_uapi.h"
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#include "nip_lib.h"
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/* get ifindex based on the device name
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* struct ifreq ifr;
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* struct nip_ifreq ifrn;
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* ioctl(fd, SIOGIFINDEX, &ifr);
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* ifr.ifr_ifindex; ===> ifindex
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*/
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static int nip_add_addr(int ifindex, const unsigned char *addr, unsigned char addr_len)
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{
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int fd, ret;
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struct nip_ifreq ifrn;
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fd = socket(AF_NINET, SOCK_DGRAM, 0);
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if (fd < 0)
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return -1;
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memset(&ifrn, 0, sizeof(ifrn));
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ifrn.ifrn_addr.bitlen = addr_len * BITS_PER_BYTE; // Byte length is converted to bit length
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memcpy(ifrn.ifrn_addr.NIP_ADDR_FIELD8, addr, addr_len);
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ifrn.ifrn_ifindex = ifindex;
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ret = ioctl(fd, SIOCSIFADDR, &ifrn);
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if (ret < 0 && errno != EEXIST) { // ignore File Exists error
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printf("cfg newip addr fail, ifindex=%d, ret=%d\n", ifindex, ret);
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close(fd);
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return -1;
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}
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close(fd);
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return 0;
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}
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/* Before executing the use case, run ifconfig XXX up.
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* XXX indicates the NIC name, for example, eth0 and wlan0
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*/
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int main(int argc, char **argv)
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{
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int ifindex = 0;
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int ret;
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unsigned char client_addr[INDEX_1] = {0x50}; // 1-byte address of the client: 0x50
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unsigned char server_addr[INDEX_2] = {0xDE, 0x00}; // 2-byte address of the server: 0xDE00
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unsigned char *addr;
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unsigned char addr_len;
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if (argc == DEMO_INPUT_1) {
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if (!strcmp(*(argv + 1), "server")) {
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printf("server cfg addr=0x%02x%02x\n",
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server_addr[INDEX_0], server_addr[INDEX_1]);
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addr = server_addr;
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addr_len = sizeof(server_addr);
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} else if (!strcmp(*(argv + 1), "client")) {
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printf("client cfg addr=0x%02x\n", client_addr[INDEX_0]);
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addr = client_addr;
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addr_len = sizeof(client_addr);
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} else {
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printf("invalid addr cfg input\n");
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return -1;
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}
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} else {
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printf("unsupport addr cfg input\n");
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return -1;
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}
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ret = nip_get_ifindex(NIC_NAME, &ifindex);
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if (ret != 0)
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return -1;
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ret = nip_add_addr(ifindex, addr, addr_len);
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if (ret != 0)
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return -1;
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printf("%s %s(ifindex=%d) cfg addr success\n", *argv, NIC_NAME, ifindex);
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return 0;
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}
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