link.c文件代码内容(调试打印已添加)：
#include <net/if.h>
#include <errno.h>
#include <string.h>
#include <stdbool.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>
#include "nl80211.h"
#include "iw.h"
/* ========== 调试宏定义 ========== */
#define IW_DEBUG_ENABLED 1
#ifdef IW_DEBUG_ENABLED
#define IW_DEBUG(fmt, ...) \
do { \
fprintf(stderr, "[IW-DEBUG] %s:%d [%s] ", FILE, LINE, func); \
fprintf(stderr, fmt, ##VA_ARGS); \
fflush(stderr); \
} while(0)
#else
#define IW_DEBUG(fmt, ...)
#endif
#define IW_INFO(fmt, ...) \
do { \
fprintf(stderr, "[IW-INFO] " fmt, ##VA_ARGS); \
fflush(stderr); \
} while(0)
#define IW_ERROR(fmt, ...) \
do { \
fprintf(stderr, "[IW-ERROR] %s:%d: " fmt, FILE, LINE, ##VA_ARGS); \
fflush(stderr); \
} while(0)
/* ========== 调试宏定义结束 ========== */
struct link_result {
uint8_t sta_addr[8];
bool link_found;
bool anything_found;
bool mld;
};
static struct link_result lr = { .link_found = false };
static int link_bss_handler(struct nl_msg *msg, void *arg)
{
IW_DEBUG("开始处理BSS消息\n");
IW_DEBUG("msg=%p, arg=%p\n", msg, arg);
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *bss[NL80211_BSS_MAX + 1];
static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
NL80211_BSS_TSF\] = { .type = NLA_U64 },
\[NL80211_BSS_FREQUENCY\] = { .type = NLA_U32 },
\[NL80211_BSS_FREQUENCY_OFFSET\] = { .type = NLA_U32 },
\[NL80211_BSS_BSSID\] = { },
\[NL80211_BSS_BEACON_INTERVAL\] = { .type = NLA_U16 },
\[NL80211_BSS_CAPABILITY\] = { .type = NLA_U16 },
\[NL80211_BSS_INFORMATION_ELEMENTS\] = { },
\[NL80211_BSS_SIGNAL_MBM\] = { .type = NLA_U32 },
\[NL80211_BSS_SIGNAL_UNSPEC\] = { .type = NLA_U8 },
\[NL80211_BSS_STATUS\] = { .type = NLA_U32 },
};
struct link_result \*result = arg;
char mac_addr\[20\], dev\[20\], link_addr\[20\];
int link_id = -1;
const char \*indent = "\\t";
int freq_offset = 0;
int i;
int attr_count = 0, bss_attr_count = 0;
IW_DEBUG("解析Netlink消息属性\\n");
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
/\* 调试：输出所有解析到的属性（不尝试访问未定义的数组） \*/
IW_DEBUG("解析到的Netlink属性:\\n");
for (i = 0; i \<= NL80211_ATTR_MAX; i++) {
if (tb\[i\]) {
attr_count++;
IW_DEBUG(" tb\[%d\] 存在，长度=%d\\n", i, nla_len(tb\[i\]));
}
}
IW_DEBUG("总共找到 %d 个Netlink属性\\n", attr_count);
if (!tb\[NL80211_ATTR_BSS\]) {
IW_ERROR("缺少NL80211_ATTR_BSS属性\\n");
fprintf(stderr, "bss info missing!\\n");
return NL_SKIP;
} else {
IW_DEBUG("找到NL80211_ATTR_BSS属性\\n");
}
IW_DEBUG("开始解析嵌套的BSS属性\\n");
if (nla_parse_nested(bss, NL80211_BSS_MAX,
tb\[NL80211_ATTR_BSS\],
bss_policy)) {
IW_ERROR("解析嵌套属性失败\\n");
fprintf(stderr, "failed to parse nested attributes!\\n");
return NL_SKIP;
} else {
IW_DEBUG("成功解析嵌套属性\\n");
}
/\* 调试：输出BSS属性（不尝试访问未定义的数组） \*/
IW_DEBUG("解析到的BSS属性:\\n");
for (i = 0; i \<= NL80211_BSS_MAX; i++) {
if (bss\[i\]) {
bss_attr_count++;
IW_DEBUG(" bss\[%d\] 存在，长度=%d\\n", i, nla_len(bss\[i\]));
}
}
IW_DEBUG("总共找到 %d 个BSS属性\\n", bss_attr_count);
if (!bss\[NL80211_BSS_BSSID\]) {
IW_DEBUG("缺少NL80211_BSS_BSSID，跳过\\n");
return NL_SKIP;
} else {
IW_DEBUG("找到NL80211_BSS_BSSID属性\\n");
}
if (!bss\[NL80211_BSS_STATUS\]) {
IW_DEBUG("缺少NL80211_BSS_STATUS，跳过\\n");
return NL_SKIP;
} else {
IW_DEBUG("找到NL80211_BSS_STATUS属性\\n");
}
mac_addr_n2a(mac_addr, nla_data(bss\[NL80211_BSS_BSSID\]));
if_indextoname(nla_get_u32(tb\[NL80211_ATTR_IFINDEX\]), dev);
IW_DEBUG("接口信息: BSSID=%s, 设备=%s\\n", mac_addr, dev);
int status = nla_get_u32(bss\[NL80211_BSS_STATUS\]);
IW_DEBUG("BSS状态: %d\\n", status);
switch (status) {
case NL80211_BSS_STATUS_AUTHENTICATED:
IW_DEBUG("状态: 已认证\\n");
break;
case NL80211_BSS_STATUS_ASSOCIATED:
IW_DEBUG("状态: 已关联\\n");
break;
case NL80211_BSS_STATUS_IBSS_JOINED:
IW_DEBUG("状态: 已加入IBSS\\n");
break;
default:
IW_DEBUG("状态: 未知 (%d)\\n", status);
break;
}
if (bss\[NL80211_BSS_MLO_LINK_ID\]) {
link_id = nla_get_u8(bss\[NL80211_BSS_MLO_LINK_ID\]);
IW_DEBUG("MLO链路ID: %d\\n", link_id);
} else {
IW_DEBUG("无MLO链路ID属性\\n");
}
if (bss\[NL80211_BSS_MLD_ADDR\]) {
IW_DEBUG("检测到MLD地址，这是多链路设备\\n");
mac_addr_n2a(link_addr, nla_data(bss\[NL80211_BSS_BSSID\]));
indent = "\\t\\t";
if (result-\>mld) {
IW_DEBUG("设备已经是MLD设备\\n");
if (memcmp(result-\>sta_addr,
nla_data(bss\[NL80211_BSS_MLD_ADDR\]), 6)) {
mac_addr_n2a(mac_addr, nla_data(bss\[NL80211_BSS_MLD_ADDR\]));
IW_ERROR("MLD地址不一致: 期望 %02x:%02x:%02x:%02x:%02x:%02x, 实际 %s\\n",
result-\>sta_addr\[0\], result-\>sta_addr\[1\], result-\>sta_addr\[2\],
result-\>sta_addr\[3\], result-\>sta_addr\[4\], result-\>sta_addr\[5\],
mac_addr);
printf("!! inconsistent MLD address information (%s)\\n",
mac_addr);
} else {
IW_DEBUG("MLD地址一致\\n");
}
} else {
IW_DEBUG("首次设置设备为MLD设备\\n");
mac_addr_n2a(mac_addr, nla_data(bss\[NL80211_BSS_MLD_ADDR\]));
result-\>mld = true;
memcpy(result-\>sta_addr,
nla_data(bss\[NL80211_BSS_MLD_ADDR\]), 6);
IW_DEBUG("设置MLD地址: %s\\n", mac_addr);
if (nla_get_u32(bss\[NL80211_BSS_STATUS\]) == NL80211_BSS_STATUS_ASSOCIATED) {
IW_INFO("已连接到MLD设备 %s (接口: %s)\\n", mac_addr, dev);
printf("Connected to %s (on %s)\\n", mac_addr, dev);
}
if (bss\[NL80211_BSS_INFORMATION_ELEMENTS\]) {
IW_DEBUG("打印MLD信息元素\\n");
print_ies(nla_data(bss\[NL80211_BSS_INFORMATION_ELEMENTS\]),
nla_len(bss\[NL80211_BSS_INFORMATION_ELEMENTS\]),
false, PRINT_LINK_MLO_MLD, false);
}
}
} else {
IW_DEBUG("非MLD设备\\n");
memcpy(result-\>sta_addr, nla_data(bss\[NL80211_BSS_BSSID\]), 6);
IW_DEBUG("设置STA地址: %02x:%02x:%02x:%02x:%02x:%02x\\n",
result-\>sta_addr\[0\], result-\>sta_addr\[1\], result-\>sta_addr\[2\],
result-\>sta_addr\[3\], result-\>sta_addr\[4\], result-\>sta_addr\[5\]);
}
/\* 输出连接状态 \*/
switch (status) {
case NL80211_BSS_STATUS_ASSOCIATED:
if (result-\>mld) {
IW_INFO("MLD链路 %d BSSID %s\\n", link_id, link_addr);
printf("\\tLink %d BSSID %s\\n", link_id, link_addr);
} else {
IW_INFO("已连接到 %s (接口: %s)\\n", mac_addr, dev);
printf("Connected to %s (on %s)\\n", mac_addr, dev);
}
break;
case NL80211_BSS_STATUS_AUTHENTICATED:
IW_INFO("已认证到 %s (接口: %s)\\n", mac_addr, dev);
printf("Authenticated with %s (on %s)\\n", mac_addr, dev);
return NL_SKIP;
case NL80211_BSS_STATUS_IBSS_JOINED:
IW_INFO("已加入IBSS %s (接口: %s)\\n", mac_addr, dev);
printf("Joined IBSS %s (on %s)\\n", mac_addr, dev);
break;
default:
IW_DEBUG("未知状态，跳过\\n");
return NL_SKIP;
}
result-\>anything_found = true;
IW_DEBUG("设置anything_found=true\\n");
if (bss\[NL80211_BSS_INFORMATION_ELEMENTS\]) {
IW_DEBUG("打印信息元素\\n");
print_ies(nla_data(bss\[NL80211_BSS_INFORMATION_ELEMENTS\]),
nla_len(bss\[NL80211_BSS_INFORMATION_ELEMENTS\]),
false, result-\>mld ? PRINT_LINK_MLO_LINK : PRINT_LINK,
false);
} else {
IW_DEBUG("无信息元素属性\\n");
}
if (bss\[NL80211_BSS_FREQUENCY_OFFSET\]) {
freq_offset = nla_get_u32(bss\[NL80211_BSS_FREQUENCY_OFFSET\]);
IW_DEBUG("频率偏移: %d\\n", freq_offset);
} else {
IW_DEBUG("无频率偏移属性\\n");
}
if (bss\[NL80211_BSS_FREQUENCY\]) {
int freq = nla_get_u32(bss\[NL80211_BSS_FREQUENCY\]);
IW_INFO("频率: %d.%d MHz\\n", freq, freq_offset);
printf("%sfreq: %d.%d\\n", indent, freq, freq_offset);
} else {
IW_DEBUG("无频率属性\\n");
}
if (bss\[NL80211_BSS_SIGNAL_MBM\]) {
int signal_mbm = nla_get_u32(bss\[NL80211_BSS_SIGNAL_MBM\]);
float signal_dbm = signal_mbm / 100.0;
IW_DEBUG("信号强度: %d mBm (%.1f dBm)\\n", signal_mbm, signal_dbm);
} else {
IW_DEBUG("无信号强度(MBM)属性\\n");
}
if (bss\[NL80211_BSS_SIGNAL_UNSPEC\]) {
int8_t signal = (int8_t)nla_get_u8(bss\[NL80211_BSS_SIGNAL_UNSPEC\]);
IW_DEBUG("信号强度(未指定): %d\\n", signal);
} else {
IW_DEBUG("无信号强度(未指定)属性\\n");
}
if (nla_get_u32(bss\[NL80211_BSS_STATUS\]) != NL80211_BSS_STATUS_ASSOCIATED) {
IW_DEBUG("非关联状态，跳过站点信息获取\\n");
return NL_SKIP;
}
/\* 只有关联状态才需要获取站点信息 \*/
result-\>link_found = true;
IW_DEBUG("设置link_found=true\\n");
IW_DEBUG("link_bss_handler处理完成\\n");
return NL_SKIP;
}
static int handle_scan_for_link(struct nl80211_state \*state,
struct nl_msg \*msg,
int argc, char \*\*argv,
enum id_input id)
{
IW_DEBUG("处理扫描链接命令\\n");
IW_DEBUG("状态: %p, 消息: %p, 参数: %d, ID: %d\\n", state, msg, argc, id);
for (int i = 0; i \< argc; i++) {
IW_DEBUG(" argv\[%d\]: %s\\n", i, argv\[i\]);
}
if (argc \> 0) {
IW_ERROR("扫描链接命令不接受额外参数\\n");
return 1;
}
IW_DEBUG("注册link_bss_handler回调\\n");
register_handler(link_bss_handler, \&lr);
IW_DEBUG("扫描链接命令处理完成\\n");
return 0;
}
static int print_link_sta(struct nl_msg \*msg, void \*arg)
{
IW_DEBUG("打印站点信息\\n");
IW_DEBUG("msg=%p, arg=%p\\n", msg, arg);
struct nlattr \*tb\[NL80211_ATTR_MAX + 1\];
struct genlmsghdr \*gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr \*sinfo\[NL80211_STA_INFO_MAX + 1\];
struct nlattr \*binfo\[NL80211_STA_BSS_PARAM_MAX + 1\];
static struct nla_policy stats_policy\[NL80211_STA_INFO_MAX + 1\] = {
\[NL80211_STA_INFO_INACTIVE_TIME\] = { .type = NLA_U32 },
\[NL80211_STA_INFO_RX_BYTES\] = { .type = NLA_U32 },
\[NL80211_STA_INFO_TX_BYTES\] = { .type = NLA_U32 },
\[NL80211_STA_INFO_RX_PACKETS\] = { .type = NLA_U32 },
\[NL80211_STA_INFO_TX_PACKETS\] = { .type = NLA_U32 },
\[NL80211_STA_INFO_SIGNAL\] = { .type = NLA_U8 },
\[NL80211_STA_INFO_RX_BITRATE\] = { .type = NLA_NESTED },
\[NL80211_STA_INFO_TX_BITRATE\] = { .type = NLA_NESTED },
\[NL80211_STA_INFO_LLID\] = { .type = NLA_U16 },
\[NL80211_STA_INFO_PLID\] = { .type = NLA_U16 },
\[NL80211_STA_INFO_PLINK_STATE\] = { .type = NLA_U8 },
};
static struct nla_policy bss_policy\[NL80211_STA_BSS_PARAM_MAX + 1\] = {
\[NL80211_STA_BSS_PARAM_CTS_PROT\] = { .type = NLA_FLAG },
\[NL80211_STA_BSS_PARAM_SHORT_PREAMBLE\] = { .type = NLA_FLAG },
\[NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME\] = { .type = NLA_FLAG },
\[NL80211_STA_BSS_PARAM_DTIM_PERIOD\] = { .type = NLA_U8 },
\[NL80211_STA_BSS_PARAM_BEACON_INTERVAL\] = { .type = NLA_U16 },
};
int attr_count = 0, sinfo_attr_count = 0;
IW_DEBUG("解析Netlink消息属性\\n");
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
/\* 调试：统计属性数量 \*/
for (int i = 0; i \<= NL80211_ATTR_MAX; i++) {
if (tb\[i\]) {
attr_count++;
}
}
IW_DEBUG("找到 %d 个Netlink属性\\n", attr_count);
if (!tb\[NL80211_ATTR_STA_INFO\]) {
IW_ERROR("缺少NL80211_ATTR_STA_INFO属性\\n");
fprintf(stderr, "sta stats missing!\\n");
return NL_SKIP;
} else {
IW_DEBUG("找到NL80211_ATTR_STA_INFO属性\\n");
}
IW_DEBUG("开始解析嵌套的站点信息属性\\n");
if (nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
tb\[NL80211_ATTR_STA_INFO\],
stats_policy)) {
IW_ERROR("解析嵌套站点信息属性失败\\n");
fprintf(stderr, "failed to parse nested attributes!\\n");
return NL_SKIP;
} else {
IW_DEBUG("成功解析嵌套站点信息属性\\n");
}
/\* 统计站点信息属性数量 \*/
for (int i = 0; i \<= NL80211_STA_INFO_MAX; i++) {
if (sinfo\[i\]) {
sinfo_attr_count++;
}
}
IW_DEBUG("找到 %d 个站点信息属性\\n", sinfo_attr_count);
IW_DEBUG("输出接收统计\\n");
if (sinfo\[NL80211_STA_INFO_RX_BYTES\] \&\& sinfo\[NL80211_STA_INFO_RX_PACKETS\]) {
uint32_t rx_bytes = nla_get_u32(sinfo\[NL80211_STA_INFO_RX_BYTES\]);
uint32_t rx_packets = nla_get_u32(sinfo\[NL80211_STA_INFO_RX_PACKETS\]);
IW_DEBUG("接收: %u 字节, %u 包\\n", rx_bytes, rx_packets);
printf("\\tRX: %u bytes (%u packets)\\n", rx_bytes, rx_packets);
} else {
IW_DEBUG("无接收统计信息\\n");
}
IW_DEBUG("输出发送统计\\n");
if (sinfo\[NL80211_STA_INFO_TX_BYTES\] \&\& sinfo\[NL80211_STA_INFO_TX_PACKETS\]) {
uint32_t tx_bytes = nla_get_u32(sinfo\[NL80211_STA_INFO_TX_BYTES\]);
uint32_t tx_packets = nla_get_u32(sinfo\[NL80211_STA_INFO_TX_PACKETS\]);
IW_DEBUG("发送: %u 字节, %u 包\\n", tx_bytes, tx_packets);
printf("\\tTX: %u bytes (%u packets)\\n", tx_bytes, tx_packets);
} else {
IW_DEBUG("无发送统计信息\\n");
}
IW_DEBUG("输出信号强度\\n");
if (sinfo\[NL80211_STA_INFO_SIGNAL\]) {
int8_t signal = (int8_t)nla_get_u8(sinfo\[NL80211_STA_INFO_SIGNAL\]);
IW_DEBUG("信号强度: %d dBm\\n", signal);
printf("\\tsignal: %d dBm\\n", signal);
} else {
IW_DEBUG("无信号强度信息\\n");
}
if (sinfo\[NL80211_STA_INFO_RX_BITRATE\]) {
IW_DEBUG("解析接收速率\\n");
char buf\[100\];
parse_bitrate(sinfo\[NL80211_STA_INFO_RX_BITRATE\], buf, sizeof(buf));
IW_INFO("接收速率: %s\\n", buf);
printf("\\trx bitrate: %s\\n", buf);
} else {
IW_DEBUG("无接收速率信息\\n");
}
if (sinfo\[NL80211_STA_INFO_TX_BITRATE\]) {
IW_DEBUG("解析发送速率\\n");
char buf\[100\];
parse_bitrate(sinfo\[NL80211_STA_INFO_TX_BITRATE\], buf, sizeof(buf));
IW_INFO("发送速率: %s\\n", buf);
printf("\\ttx bitrate: %s\\n", buf);
} else {
IW_DEBUG("无发送速率信息\\n");
}
if (sinfo\[NL80211_STA_INFO_BSS_PARAM\]) {
IW_DEBUG("解析BSS参数\\n");
int bss_param_count = 0;
if (nla_parse_nested(binfo, NL80211_STA_BSS_PARAM_MAX,
sinfo\[NL80211_STA_INFO_BSS_PARAM\],
bss_policy)) {
IW_ERROR("解析嵌套BSS参数失败\\n");
fprintf(stderr, "failed to parse nested bss parameters!\\n");
} else {
IW_DEBUG("成功解析BSS参数\\n");
/\* 统计BSS参数数量 \*/
for (int i = 0; i \<= NL80211_STA_BSS_PARAM_MAX; i++) {
if (binfo\[i\]) {
bss_param_count++;
}
}
IW_DEBUG("找到 %d 个BSS参数\\n", bss_param_count);
char \*delim = "";
printf("\\tbss flags: ");
IW_DEBUG("输出BSS标志\\n");
if (binfo\[NL80211_STA_BSS_PARAM_CTS_PROT\]) {
IW_DEBUG("CTS保护已启用\\n");
printf("CTS-protection");
delim = " ";
}
if (binfo\[NL80211_STA_BSS_PARAM_SHORT_PREAMBLE\]) {
IW_DEBUG("短前导码已启用\\n");
printf("%sshort-preamble", delim);
delim = " ";
}
if (binfo\[NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME\]) {
IW_DEBUG("短时隙已启用\\n");
printf("%sshort-slot-time", delim);
}
IW_DEBUG("\\n");
printf("\\n");
if (binfo\[NL80211_STA_BSS_PARAM_DTIM_PERIOD\]) {
uint8_t dtim = nla_get_u8(binfo\[NL80211_STA_BSS_PARAM_DTIM_PERIOD\]);
IW_DEBUG("DTIM周期: %d\\n", dtim);
printf("\\tdtim period: %d\\n", dtim);
} else {
IW_DEBUG("无DTIM周期信息\\n");
}
if (binfo\[NL80211_STA_BSS_PARAM_BEACON_INTERVAL\]) {
uint16_t beacon_int = nla_get_u16(binfo\[NL80211_STA_BSS_PARAM_BEACON_INTERVAL\]);
IW_DEBUG("信标间隔: %d\\n", beacon_int);
printf("\\tbeacon int: %d\\n", beacon_int);
} else {
IW_DEBUG("无信标间隔信息\\n");
}
}
} else {
IW_DEBUG("无BSS参数信息\\n");
}
IW_DEBUG("站点信息打印完成\\n");
return NL_SKIP;
}
static int handle_link_sta(struct nl80211_state \*state,
struct nl_msg \*msg,
int argc, char \*\*argv,
enum id_input id)
{
IW_DEBUG("处理链接站点命令\\n");
IW_DEBUG("状态: %p, 消息: %p, 参数: %d, ID: %d\\n", state, msg, argc, id);
for (int i = 0; i \< argc; i++) {
IW_DEBUG(" argv\[%d\]: %s\\n", i, argv\[i\]);
}
if (argc \< 1) {
IW_ERROR("缺少MAC地址参数\\n");
return 1;
}
unsigned char mac_addr\[ETH_ALEN\];
IW_DEBUG("解析MAC地址: %s\\n", argv\[0\]);
if (mac_addr_a2n(mac_addr, argv\[0\])) {
IW_ERROR("无效的MAC地址: %s\\n", argv\[0\]);
fprintf(stderr, "invalid mac address\\n");
return 2;
}
IW_DEBUG("解析的MAC地址: %02x:%02x:%02x:%02x:%02x:%02x\\n",
mac_addr\[0\], mac_addr\[1\], mac_addr\[2\],
mac_addr\[3\], mac_addr\[4\], mac_addr\[5\]);
argc--;
argv++;
if (argc) {
IW_ERROR("有多余参数\\n");
return 1;
}
IW_DEBUG("将MAC地址添加到Netlink消息\\n");
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
IW_DEBUG("注册print_link_sta回调\\n");
register_handler(print_link_sta, NULL);
IW_DEBUG("链接站点命令处理完成\\n");
return 0;
nla_put_failure:
IW_ERROR("添加Netlink属性失败\\n");
return -ENOBUFS;
}
static int handle_link(struct nl80211_state \*state,
struct nl_msg \*msg, int argc, char \*\*argv,
enum id_input id)
{
IW_DEBUG("处理链接命令\\n");
IW_DEBUG("状态: %p, 消息: %p, 参数: %d, ID: %d\\n", state, msg, argc, id);
for (int i = 0; i \< argc; i++) {
IW_DEBUG(" argv\[%d\]: %s\\n", i, argv\[i\]);
}
char \*link_argv\[\] = {
NULL,
"link",
"get_bss",
NULL,
};
char \*station_argv\[\] = {
NULL,
"link",
"get_sta",
NULL,
NULL,
};
char addr_buf\[3 \* 6\];
int err;
/\* 重置全局状态 \*/
IW_DEBUG("重置link_result状态\\n");
memset(\&lr, 0, sizeof(lr));
IW_DEBUG("当前lr状态: link_found=%d, anything_found=%d, mld=%d\\n",
lr.link_found, lr.anything_found, lr.mld);
/\* 检查STA地址是否被正确清除 \*/
IW_DEBUG("STA地址: %02x:%02x:%02x:%02x:%02x:%02x\\n",
lr.sta_addr\[0\], lr.sta_addr\[1\], lr.sta_addr\[2\],
lr.sta_addr\[3\], lr.sta_addr\[4\], lr.sta_addr\[5\]);
link_argv\[0\] = argv\[0\];
IW_DEBUG("调用handle_cmd获取BSS信息\\n");
IW_DEBUG("参数: \[%s\] \[%s\] \[%s\]\\n",
link_argv\[0\] ? link_argv\[0\] : "(null)",
link_argv\[1\] ? link_argv\[1\] : "(null)",
link_argv\[2\] ? link_argv\[2\] : "(null)");
err = handle_cmd(state, id, 3, link_argv);
IW_DEBUG("handle_cmd返回: %d\\n", err);
if (err) {
IW_ERROR("获取BSS信息失败: %d\\n", err);
return err;
}
IW_DEBUG("扫描后lr状态: link_found=%d, anything_found=%d, mld=%d\\n",
lr.link_found, lr.anything_found, lr.mld);
IW_DEBUG("扫描后STA地址: %02x:%02x:%02x:%02x:%02x:%02x\\n",
lr.sta_addr\[0\], lr.sta_addr\[1\], lr.sta_addr\[2\],
lr.sta_addr\[3\], lr.sta_addr\[4\], lr.sta_addr\[5\]);
if (!lr.link_found) {
if (!lr.anything_found) {
IW_INFO("未找到连接\\n");
printf("Not connected.\\n");
} else {
IW_DEBUG("找到BSS但未关联\\n");
}
return 0;
}
IW_DEBUG("找到有效连接\\n");
mac_addr_n2a(addr_buf, lr.sta_addr);
addr_buf\[17\] = '\\0';
IW_DEBUG("连接到的AP地址: %s\\n", addr_buf);
IW_DEBUG("是否MLD: %s\\n", lr.mld ? "是" : "否");
if (lr.mld) {
IW_INFO("MLD %s 统计:\\n", addr_buf);
printf("MLD %s stats:\\n", addr_buf);
}
station_argv\[0\] = argv\[0\];
station_argv\[3\] = addr_buf;
IW_DEBUG("调用handle_cmd获取站点统计信息\\n");
IW_DEBUG("参数: \[%s\] \[%s\] \[%s\] \[%s\]\\n",
station_argv\[0\] ? station_argv\[0\] : "(null)",
station_argv\[1\] ? station_argv\[1\] : "(null)",
station_argv\[2\] ? station_argv\[2\] : "(null)",
station_argv\[3\] ? station_argv\[3\] : "(null)");
int result = handle_cmd(state, id, 4, station_argv);
IW_DEBUG("handle_cmd返回: %d\\n", result);
return result;
}
TOPLEVEL(link, NULL, 0, 0, CIB_NETDEV, handle_link,
"Print information about the current connection, if any.");
HIDDEN(link, get_sta, "\
DEBUG\] __handle_cmd: idby=1, argc=3, argv\[0\]=phy0-sta0 \[DEBUG\] command_idby=0, devidx=0 \[DEBUG\] section=(null) \[DEBUG\] selected command: get_bss \[IW-DEBUG\] link.c:298 \[handle_scan_for_link\] 处理扫描链接命令 \[IW-DEBUG\] link.c:299 \[handle_scan_for_link\] 状态: 0x7fcccaaf40, 消息: 0x7fa1dc9160, 参数: 0, ID: 1 \[IW-DEBUG\] link.c:310 \[handle_scan_for_link\] 注册link_bss_handler回调 \[IW-DEBUG\] link.c:313 \[handle_scan_for_link\] 扫描链接命令处理完成 \[DEBUG\] About to send NL command: 0x20 \[DEBUG\] nl_send_auto_complete returned: 28 \[IW-DEBUG\] link.c:53 \[link_bss_handler\] 开始处理BSS消息 \[IW-DEBUG\] link.c:54 \[link_bss_handler\] msg=0x7fa1dc91c0, arg=0x442391 \[IW-DEBUG\] link.c:79 \[link_bss_handler\] 解析Netlink消息属性 \[IW-DEBUG\] link.c:84 \[link_bss_handler\] 解析到的Netlink属性: \[IW-DEBUG\] link.c:88 \[link_bss_handler\] tb\[3\] 存在，长度=4 \[IW-DEBUG\] link.c:88 \[link_bss_handler\] tb\[46\] 存在，长度=4 \[IW-DEBUG\] link.c:88 \[link_bss_handler\] tb\[47\] 存在，长度=336 \[IW-DEBUG\] link.c:88 \[link_bss_handler\] tb\[153\] 存在，长度=8 \[IW-DEBUG\] link.c:91 \[link_bss_handler\] 总共找到 4 个Netlink属性 \[IW-DEBUG\] link.c:98 \[link_bss_handler\] 找到NL80211_ATTR_BSS属性 \[IW-DEBUG\] link.c:101 \[link_bss_handler\] 开始解析嵌套的BSS属性 \[IW-DEBUG\] link.c:109 \[link_bss_handler\] 成功解析嵌套属性 \[IW-DEBUG\] link.c:113 \[link_bss_handler\] 解析到的BSS属性: \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[1\] 存在，长度=6 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[2\] 存在，长度=4 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[3\] 存在，长度=8 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[4\] 存在，长度=2 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[5\] 存在，长度=2 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[6\] 存在，长度=229 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[7\] 存在，长度=4 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[9\] 存在，长度=4 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[10\] 存在，长度=4 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[15\] 存在，长度=8 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[20\] 存在，长度=4 \[IW-DEBUG\] link.c:117 \[link_bss_handler\] bss\[23\] 存在，长度=4 \[IW-DEBUG\] link.c:120 \[link_bss_handler\] 总共找到 12 个BSS属性 \[IW-DEBUG\] link.c:126 \[link_bss_handler\] 找到NL80211_BSS_BSSID属性 \[IW-DEBUG\] link.c:133 \[link_bss_handler\] 找到NL80211_BSS_STATUS属性 \[IW-DEBUG\] link.c:139 \[link_bss_handler\] 接口信息: BSSID=80:af:ca:ed:a7:67, 设备=phy0-sta0 \[IW-DEBUG\] link.c:142 \[link_bss_handler\] BSS状态: 1 \[IW-DEBUG\] link.c:149 \[link_bss_handler\] 状态: 已关联 \[IW-DEBUG\] link.c:163 \[link_bss_handler\] 无MLO链路ID属性 \[IW-DEBUG\] link.c:206 \[link_bss_handler\] 非MLD设备 \[IW-DEBUG\] link.c:208 \[link_bss_handler\] 设置STA地址: 80:af:ca:ed:a7:67 \[IW-INFO\] 已连接到 80:af:ca:ed:a7:67 (接口: phy0-sta0) Connected to 80:af:ca:ed:a7:67 (on phy0-sta0) \[IW-DEBUG\] link.c:238 \[link_bss_handler\] 设置anything_found=true \[IW-DEBUG\] link.c:241 \[link_bss_handler\] 打印信息元素 SSID: WIFI-2.4G \[IW-DEBUG\] link.c:252 \[link_bss_handler\] 频率偏移: 0 \[IW-INFO\] 频率: 2412.0 MHz freq: 2412.0 \[IW-DEBUG\] link.c:268 \[link_bss_handler\] 信号强度: -1900 mBm (-19.0 dBm) \[IW-DEBUG\] link.c:277 \[link_bss_handler\] 无信号强度(未指定)属性 \[IW-DEBUG\] link.c:287 \[link_bss_handler\] 设置link_found=true \[IW-DEBUG\] link.c:289 \[link_bss_handler\] link_bss_handler处理完成 \[IW-DEBUG\] link.c:600 \[handle_link\] handle_cmd返回: 0 \[IW-DEBUG\] link.c:607 \[handle_link\] 扫描后lr状态: link_found=1, anything_found=1, mld=0 \[IW-DEBUG\] link.c:610 \[handle_link\] 扫描后STA地址: 80:af:ca:ed:a7:67 \[IW-DEBUG\] link.c:624 \[handle_link\] 找到有效连接 \[IW-DEBUG\] link.c:629 \[handle_link\] 连接到的AP地址: 80:af:ca:ed:a7:67 \[IW-DEBUG\] link.c:630 \[handle_link\] 是否MLD: 否 \[IW-DEBUG\] link.c:640 \[handle_link\] 调用handle_cmd获取站点统计信息 \[IW-DEBUG\] link.c:641 \[handle_link\] 参数: \[phy0-sta0\] \[link\] \[get_sta\] \[80:af:ca:ed:a7:67
DEBUG\] __handle_cmd: idby=1, argc=4, argv\[0\]=phy0-sta0 \[DEBUG\] command_idby=0, devidx=0 \[DEBUG\] section=(null) \[DEBUG\] selected command: get_sta \[IW-DEBUG\] link.c:505 \[handle_link_sta\] 处理链接站点命令 \[IW-DEBUG\] link.c:506 \[handle_link_sta\] 状态: 0x7fcccaaf40, 消息: 0x7fa1dc9110, 参数: 1, ID: 1 \[IW-DEBUG\] link.c:509 \[handle_link_sta\] argv\[0\]: 80:af:ca:ed:a7:67 \[IW-DEBUG\] link.c:519 \[handle_link_sta\] 解析MAC地址: 80:af:ca:ed:a7:67 \[IW-DEBUG\] link.c:526 \[handle_link_sta\] 解析的MAC地址: 80:af:ca:ed:a7:67 \[IW-DEBUG\] link.c:538 \[handle_link_sta\] 将MAC地址添加到Netlink消息 \[IW-DEBUG\] link.c:541 \[handle_link_sta\] 注册print_link_sta回调 \[IW-DEBUG\] link.c:544 \[handle_link_sta\] 链接站点命令处理完成 \[DEBUG\] About to send NL command: 0x11 \[DEBUG\] nl_send_auto_complete returned: 40 \[IW-DEBUG\] link.c:319 \[print_link_sta\] 打印站点信息 \[IW-DEBUG\] link.c:320 \[print_link_sta\] msg=0x7fa1dc91d0, arg=0 \[IW-DEBUG\] link.c:348 \[print_link_sta\] 解析Netlink消息属性 \[IW-DEBUG\] link.c:358 \[print_link_sta\] 找到 4 个Netlink属性 \[IW-DEBUG\] link.c:365 \[print_link_sta\] 找到NL80211_ATTR_STA_INFO属性 \[IW-DEBUG\] link.c:368 \[print_link_sta\] 开始解析嵌套的站点信息属性 \[IW-DEBUG\] link.c:376 \[print_link_sta\] 成功解析嵌套站点信息属性 \[IW-DEBUG\] link.c:385 \[print_link_sta\] 找到 12 个站点信息属性 \[IW-DEBUG\] link.c:387 \[print_link_sta\] 输出接收统计 \[IW-DEBUG\] link.c:391 \[print_link_sta\] 接收: 9199 字节, 31 包 RX: 9199 bytes (31 packets) \[IW-DEBUG\] link.c:397 \[print_link_sta\] 输出发送统计 \[IW-DEBUG\] link.c:401 \[print_link_sta\] 发送: 7189 字节, 38 包 TX: 7189 bytes (38 packets) \[IW-DEBUG\] link.c:407 \[print_link_sta\] 输出信号强度 \[IW-DEBUG\] link.c:410 \[print_link_sta\] 信号强度: -21 dBm signal: -21 dBm \[IW-DEBUG\] link.c:417 \[print_link_sta\] 解析接收速率 \[IW-INFO\] 接收速率: 65.0 MBit/s rx bitrate: 65.0 MBit/s \[IW-DEBUG\] link.c:427 \[print_link_sta\] 解析发送速率 \[IW-INFO\] 发送速率: 72.2 MBit/s tx bitrate: 72.2 MBit/s \[IW-DEBUG\] link.c:437 \[print_link_sta\] 解析BSS参数 \[IW-DEBUG\] link.c:445 \[print_link_sta\] 成功解析BSS参数 \[IW-DEBUG\] link.c:453 \[print_link_sta\] 找到 4 个BSS参数 \[IW-DEBUG\] link.c:457 \[print_link_sta\] 输出BSS标志 \[IW-DEBUG\] link.c:465 \[print_link_sta\] 短前导码已启用 \[IW-DEBUG\] link.c:470 \[print_link_sta\] 短时隙已启用 \[IW-DEBUG\] link.c:473 \[print_link_sta
bss flags: short-preamble short-slot-time
IW-DEBUG\] link.c:478 \[print_link_sta\] DTIM周期: 2 dtim period: 2 \[IW-DEBUG\] link.c:486 \[print_link_sta\] 信标间隔: 100 beacon int: 100 \[IW-DEBUG\] link.c:496 \[print_link_sta\] 站点信息打印完成 \[IW-DEBUG\] link.c:648 \[handle_link\] handle_cmd返回: 0 root@OpenWrt:\~#