Question

我正在尝试使用Wifi在两台笔记本电脑之间进行通信。我正在使用的radiotap头和ieee80211头的结构是：

 struct ieee80211_radiotap_header {
unsigned char it_version;
uint16_t it_len;        
uint32_t it_present;
 };

 /* Structure for 80211 header */

 struct ieee80211_hdr_3addr {
    uint16_t frame_ctl[2];
    uint16_t duration_id;
    unsigned char addr1[ETH_ALEN];
    unsigned char addr2[ETH_ALEN];
    unsigned char addr3[ETH_ALEN];
    uint16_t seq_ctl;
  };

struct packet {
   struct ieee80211_radiotap_header rtap_header;
   struct ieee80211_hdr_3addr iee802_header;
   unsigned char payload[30];

  };

  /* In main program */

   struct packet mypacket;
   struct ieee80211_radiotap_header ratap_header;
   struct ieee80211_hdr_3addr iee802_header;

   unsigned char addr1[ETH_ALEN] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};  /* broadcast address */
   unsigned char addr2[ETH_ALEN] = {0x28,0xcf,0xda,0xde,0xd3,0xcc};  /* mac address of   
                                                                      network card */
   unsigned char addr3[ETH_ALEN] = {0xd8,0xc7,0xc8,0xd7,0x9f,0x21};   /* mac address of   
                                                  access point i am trying to connect to */


  /* Radio tap header data */
   ratap_header.it_version = 0x00;
   ratap_header.it_len = 0x07;      
   ratap_header.it_present =  (1 << IEEE80211_RADIOTAP_RATE);

   mypacket.rtap_header = ratap_header;

   /* ieee80211 header data */

    iee802_header.frame_ctl[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 
                                                          IEEE80211_FC0_SUBTYPE_BEACON;
iee802_header.frame_ctl[1] =IEEE80211_FC1_DIR_NODS;
    strcpy(iee802_header.addr1,addr1);
    strcpy(iee802_header.addr2,addr2);
    strcpy(iee802_header.addr3,addr3);
    iee802_header.seq_ctl = 0x1086;

    mypacket.iee802_header=iee802_header;

   /* Payload */

   unsigned char payload[PACKET_LENGTH]="temp";

   strcpy(mypacket.payload , payload);

当我在同一台笔记本电脑上测试传输和接收时，我能够收到数据包。但是，我无法接收在其他笔记本电脑上传输的数据包。 Wireshark也不显示数据包。

有人能说出我犯的错误吗？

构造用于分组注入的radiotap报头和ieee80211报头结构

0 个答案: