711dc5ce9903d5b49cc2ee749b6037221380c273
[openwrt/staging/mkresin.git] / package / libs / libpcap / patches / 202-protocol_api.patch
1 This API extension is used by ead (Emergency Access Daemon)
2
3 --- a/pcap-linux.c
4 +++ b/pcap-linux.c
5 @@ -425,7 +425,7 @@ static int iface_get_id(int fd, const ch
6 static int iface_get_mtu(int fd, const char *device, char *ebuf);
7 static int iface_get_arptype(int fd, const char *device, char *ebuf);
8 #ifdef HAVE_PF_PACKET_SOCKETS
9 -static int iface_bind(int fd, int ifindex, char *ebuf);
10 +static int iface_bind(int fd, int ifindex, char *ebuf, unsigned short proto);
11 #ifdef IW_MODE_MONITOR
12 static int has_wext(int sock_fd, const char *device, char *ebuf);
13 #endif /* IW_MODE_MONITOR */
14 @@ -1059,7 +1059,7 @@ pcap_can_set_rfmon_linux(pcap_t *handle)
15 * (We assume that if we have Wireless Extensions support
16 * we also have PF_PACKET support.)
17 */
18 - sock_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
19 + sock_fd = socket(PF_PACKET, SOCK_RAW, p->opt.proto);
20 if (sock_fd == -1) {
21 (void)pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
22 "socket: %s", pcap_strerror(errno));
23 @@ -1456,6 +1456,9 @@ pcap_activate_linux(pcap_t *handle)
24 handle->read_op = pcap_read_linux;
25 handle->stats_op = pcap_stats_linux;
26
27 + if (handle->opt.proto < 0)
28 + handle->opt.proto = (int) htons(ETH_P_ALL);
29 +
30 /*
31 * The "any" device is a special device which causes us not
32 * to bind to a particular device and thus to look at all
33 @@ -3335,8 +3338,8 @@ activate_new(pcap_t *handle)
34 * try a SOCK_RAW socket for the raw interface.
35 */
36 sock_fd = is_any_device ?
37 - socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) :
38 - socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
39 + socket(PF_PACKET, SOCK_DGRAM, handle->opt.proto) :
40 + socket(PF_PACKET, SOCK_RAW, handle->opt.proto);
41
42 if (sock_fd == -1) {
43 if (errno == EINVAL || errno == EAFNOSUPPORT) {
44 @@ -3454,7 +3457,7 @@ activate_new(pcap_t *handle)
45 return PCAP_ERROR;
46 }
47 sock_fd = socket(PF_PACKET, SOCK_DGRAM,
48 - htons(ETH_P_ALL));
49 + handle->opt.proto);
50 if (sock_fd == -1) {
51 pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
52 "socket: %s", pcap_strerror(errno));
53 @@ -3518,7 +3521,7 @@ activate_new(pcap_t *handle)
54 }
55
56 if ((err = iface_bind(sock_fd, handlep->ifindex,
57 - handle->errbuf)) != 1) {
58 + handle->errbuf, handle->opt.proto)) != 1) {
59 close(sock_fd);
60 if (err < 0)
61 return err;
62 @@ -5271,7 +5274,7 @@ iface_get_id(int fd, const char *device,
63 * or a PCAP_ERROR_ value on a hard error.
64 */
65 static int
66 -iface_bind(int fd, int ifindex, char *ebuf)
67 +iface_bind(int fd, int ifindex, char *ebuf, unsigned short proto)
68 {
69 struct sockaddr_ll sll;
70 int err;
71 @@ -5280,7 +5283,7 @@ iface_bind(int fd, int ifindex, char *eb
72 memset(&sll, 0, sizeof(sll));
73 sll.sll_family = AF_PACKET;
74 sll.sll_ifindex = ifindex;
75 - sll.sll_protocol = htons(ETH_P_ALL);
76 + sll.sll_protocol = proto;
77
78 if (bind(fd, (struct sockaddr *) &sll, sizeof(sll)) == -1) {
79 if (errno == ENETDOWN) {
80 @@ -6325,7 +6328,7 @@ activate_old(pcap_t *handle)
81
82 /* Open the socket */
83
84 - handle->fd = socket(PF_INET, SOCK_PACKET, htons(ETH_P_ALL));
85 + handle->fd = socket(PF_INET, SOCK_PACKET, handle->opt.proto);
86 if (handle->fd == -1) {
87 pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
88 "socket: %s", pcap_strerror(errno));
89 --- a/pcap.c
90 +++ b/pcap.c
91 @@ -578,6 +578,7 @@ pcap_create_common(char *ebuf, size_t si
92 p->opt.promisc = 0;
93 p->opt.rfmon = 0;
94 p->opt.immediate = 0;
95 + p->opt.proto = -1;
96 p->opt.tstamp_type = -1; /* default to not setting time stamp type */
97 p->opt.tstamp_precision = PCAP_TSTAMP_PRECISION_MICRO;
98
99 @@ -771,6 +772,15 @@ pcap_get_tstamp_precision(pcap_t *p)
100 }
101
102 int
103 +pcap_set_protocol(pcap_t *p, unsigned short proto)
104 +{
105 + if (pcap_check_activated(p))
106 + return PCAP_ERROR_ACTIVATED;
107 + p->opt.proto = proto;
108 + return 0;
109 +}
110 +
111 +int
112 pcap_activate(pcap_t *p)
113 {
114 int status;
115 --- a/pcap/pcap.h
116 +++ b/pcap/pcap.h
117 @@ -68,6 +68,7 @@ extern "C" {
118 #define PCAP_VERSION_MINOR 4
119
120 #define PCAP_ERRBUF_SIZE 256
121 +#define HAS_PROTO_EXTENSION
122
123 /*
124 * Compatibility for systems that have a bpf.h that
125 @@ -287,6 +288,7 @@ PCAP_API int pcap_set_timeout(pcap_t *,
126 PCAP_API int pcap_set_tstamp_type(pcap_t *, int);
127 PCAP_API int pcap_set_immediate_mode(pcap_t *, int);
128 PCAP_API int pcap_set_buffer_size(pcap_t *, int);
129 +PCAP_API int pcap_set_protocol(pcap_t *, unsigned short);
130 PCAP_API int pcap_set_tstamp_precision(pcap_t *, int);
131 PCAP_API int pcap_get_tstamp_precision(pcap_t *);
132 PCAP_API int pcap_activate(pcap_t *);
133 --- a/pcap-int.h
134 +++ b/pcap-int.h
135 @@ -111,6 +111,7 @@ struct pcap_opt {
136 char *device;
137 int timeout; /* timeout for buffering */
138 u_int buffer_size;
139 + int proto; /* protocol for packet socket (linux) */
140 int promisc;
141 int rfmon; /* monitor mode */
142 int immediate; /* immediate mode - deliver packets as soon as they arrive */