package/libpcap/patches/202-protocol_api.patch

   1 --- a/pcap-int.h
   2 +++ b/pcap-int.h
   3 @@ -209,6 +209,7 @@ struct pcap_opt {
   4         char    *source;
   5         int     promisc;
   6         int     rfmon;
   7 +       int proto;      /* protocol for packet socket (linux) */
   8  };
   9
  10  /*
  11 --- a/pcap-linux.c
  12 +++ b/pcap-linux.c
  13 @@ -335,7 +335,7 @@ static int  iface_get_id(int fd, const ch
  14  static int     iface_get_mtu(int fd, const char *device, char *ebuf);
  15  static int     iface_get_arptype(int fd, const char *device, char *ebuf);
  16  #ifdef HAVE_PF_PACKET_SOCKETS
  17 -static int     iface_bind(int fd, int ifindex, char *ebuf);
  18 +static int     iface_bind(int fd, int ifindex, char *ebuf, unsigned short proto);
  19  #ifdef IW_MODE_MONITOR
  20  static int     has_wext(int sock_fd, const char *device, char *ebuf);
  21  #endif /* IW_MODE_MONITOR */
  22 @@ -881,7 +881,7 @@ pcap_can_set_rfmon_linux(pcap_t *handle)
  23          * (We assume that if we have Wireless Extensions support
  24          * we also have PF_PACKET support.)
  25          */
  26 -       sock_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
  27 +       sock_fd = socket(PF_PACKET, SOCK_RAW, p->opt.proto);
  28         if (sock_fd == -1) {
  29                 (void)snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
  30                     "socket: %s", pcap_strerror(errno));
  31 @@ -1128,6 +1128,9 @@ pcap_activate_linux(pcap_t *handle)
  32         handle->read_op = pcap_read_linux;
  33         handle->stats_op = pcap_stats_linux;
  34
  35 +       if (handle->opt.proto < 0)
  36 +               handle->opt.proto = (int) htons(ETH_P_ALL);
  37 +
  38         /*
  39          * The "any" device is a special device which causes us not
  40          * to bind to a particular device and thus to look at all
  41 @@ -2684,8 +2687,8 @@ activate_new(pcap_t *handle)
  42          * try a SOCK_RAW socket for the raw interface.
  43          */
  44         sock_fd = is_any_device ?
  45 -               socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) :
  46 -               socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
  47 +               socket(PF_PACKET, SOCK_DGRAM, handle->opt.proto) :
  48 +               socket(PF_PACKET, SOCK_RAW, handle->opt.proto);
  49
  50         if (sock_fd == -1) {
  51                 snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "socket: %s",
  52 @@ -2783,7 +2786,7 @@ activate_new(pcap_t *handle)
  53                                 return PCAP_ERROR;
  54                         }
  55                         sock_fd = socket(PF_PACKET, SOCK_DGRAM,
  56 -                           htons(ETH_P_ALL));
  57 +                           handle->opt.proto);
  58                         if (sock_fd == -1) {
  59                                 snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
  60                                     "socket: %s", pcap_strerror(errno));
  61 @@ -2835,7 +2838,7 @@ activate_new(pcap_t *handle)
  62                 }
  63
  64                 if ((err = iface_bind(sock_fd, handle->md.ifindex,
  65 -                   handle->errbuf)) != 1) {
  66 +                   handle->errbuf, handle->opt.proto)) != 1) {
  67                         close(sock_fd);
  68                         if (err < 0)
  69                                 return err;
  70 @@ -3640,7 +3643,7 @@ iface_get_id(int fd, const char *device,
  71   *  or a PCAP_ERROR_ value on a hard error.
  72   */
  73  static int
  74 -iface_bind(int fd, int ifindex, char *ebuf)
  75 +iface_bind(int fd, int ifindex, char *ebuf, unsigned short proto)
  76  {
  77         struct sockaddr_ll      sll;
  78         int                     err;
  79 @@ -3649,7 +3652,7 @@ iface_bind(int fd, int ifindex, char *eb
  80         memset(&sll, 0, sizeof(sll));
  81         sll.sll_family          = AF_PACKET;
  82         sll.sll_ifindex         = ifindex;
  83 -       sll.sll_protocol        = htons(ETH_P_ALL);
  84 +       sll.sll_protocol        = proto;
  85
  86         if (bind(fd, (struct sockaddr *) &sll, sizeof(sll)) == -1) {
  87                 if (errno == ENETDOWN) {
  88 @@ -4359,7 +4362,7 @@ activate_old(pcap_t *handle)
  89
  90         /* Open the socket */
  91
  92 -       handle->fd = socket(PF_INET, SOCK_PACKET, htons(ETH_P_ALL));
  93 +       handle->fd = socket(PF_INET, SOCK_PACKET, handle->opt.proto);
  94         if (handle->fd == -1) {
  95                 snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
  96                          "socket: %s", pcap_strerror(errno));
  97 --- a/pcap.c
  98 +++ b/pcap.c
  99 @@ -258,6 +258,8 @@ pcap_create_common(const char *source, c
 100         pcap_set_snaplen(p, 65535);     /* max packet size */
 101         p->opt.promisc = 0;
 102         p->opt.buffer_size = 0;
 103 +       p->opt.proto = -1;
 104 +
 105         return (p);
 106  }
 107
 108 @@ -317,6 +319,15 @@ pcap_set_buffer_size(pcap_t *p, int buff
 109         return 0;
 110  }
 111
 112 +int
 113 +pcap_set_protocol(pcap_t *p, unsigned short proto)
 114 +{
 115 +       if (pcap_check_activated(p))
 116 +               return PCAP_ERROR_ACTIVATED;
 117 +       p->opt.proto = proto;
 118 +       return 0;
 119 +}
 120 +
 121  int
 122  pcap_activate(pcap_t *p)
 123  {
 124 --- a/pcap/pcap.h
 125 +++ b/pcap/pcap.h
 126 @@ -68,6 +68,7 @@ extern "C" {
 127  #define PCAP_VERSION_MINOR 4
 128
 129  #define PCAP_ERRBUF_SIZE 256
 130 +#define HAS_PROTO_EXTENSION
 131
 132  /*
 133   * Compatibility for systems that have a bpf.h that
 134 @@ -276,6 +277,7 @@ int pcap_can_set_rfmon(pcap_t *);
 135  int    pcap_set_rfmon(pcap_t *, int);
 136  int    pcap_set_timeout(pcap_t *, int);
 137  int    pcap_set_buffer_size(pcap_t *, int);
 138 +int    pcap_set_protocol(pcap_t *, unsigned short);
 139  int    pcap_activate(pcap_t *);
 140
 141  pcap_t *pcap_open_live(const char *, int, int, int, char *);