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monitor: Add option to provide nl80211 family identifier

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This commit is contained in:
Marcel Holtmann 2014-08-15 23:59:33 +02:00
parent 18652f1f49
commit 9fa506c237
3 changed files with 30 additions and 7 deletions
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31
monitor/main.c
View File

@ -25,6 +25,7 @@
#endif #endif
#include <stdio.h> #include <stdio.h>
#include <ctype.h>
#include <stdlib.h> #include <stdlib.h>
#include <getopt.h> #include <getopt.h>
#include <sys/socket.h> #include <sys/socket.h>
@ -310,7 +311,7 @@ done:
return exit_status; return exit_status;
} }
static int process_pcap(struct pcap *pcap) static int process_pcap(struct pcap *pcap, uint16_t id)
{ {
struct nlmon *nlmon = NULL; struct nlmon *nlmon = NULL;
struct timeval tv; struct timeval tv;
@ -327,7 +328,7 @@ static int process_pcap(struct pcap *pcap)
return EXIT_FAILURE; return EXIT_FAILURE;
} }
nlmon = nlmon_create(); nlmon = nlmon_create(id);
while (pcap_read(pcap, &tv, buf, snaplen, &len, &real_len)) { while (pcap_read(pcap, &tv, buf, snaplen, &len, &real_len)) {
uint16_t arphrd_type; uint16_t arphrd_type;
@ -415,6 +416,7 @@ static const struct option main_options[] = {
{ "read", required_argument, NULL, 'r' }, { "read", required_argument, NULL, 'r' },
{ "write", required_argument, NULL, 'w' }, { "write", required_argument, NULL, 'w' },
{ "analyze", required_argument, NULL, 'a' }, { "analyze", required_argument, NULL, 'a' },
{ "nl80211", required_argument, NULL, 'F' },
{ "interface", required_argument, NULL, 'i' }, { "interface", required_argument, NULL, 'i' },
{ "version", no_argument, NULL, 'v' }, { "version", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' }, { "help", no_argument, NULL, 'h' },
@ -426,6 +428,7 @@ int main(int argc, char *argv[])
const char *reader_path = NULL; const char *reader_path = NULL;
const char *analyze_path = NULL; const char *analyze_path = NULL;
const char *ifname = "nlmon"; const char *ifname = "nlmon";
uint16_t nl80211_family = GENL_ID_GENERATE;
struct l_signal *signal; struct l_signal *signal;
struct l_netlink *genl; struct l_netlink *genl;
sigset_t mask; sigset_t mask;
@ -434,7 +437,7 @@ int main(int argc, char *argv[])
for (;;) { for (;;) {
int opt; int opt;
opt = getopt_long(argc, argv, "r:w:a:i:vh", opt = getopt_long(argc, argv, "r:w:a:F:i:vh",
main_options, NULL); main_options, NULL);
if (opt < 0) if (opt < 0)
break; break;
@ -449,6 +452,26 @@ int main(int argc, char *argv[])
case 'a': case 'a':
analyze_path = optarg; analyze_path = optarg;
break; break;
case 'F':
if (strlen(optarg) > 3) {
if (!strncasecmp(optarg, "0x", 2) &&
!isxdigit(optarg[2])) {
usage();
return EXIT_FAILURE;
}
nl80211_family = strtoul(optarg + 2, NULL, 16);
} else {
if (!isdigit(optarg[0])) {
usage();
return EXIT_FAILURE;
}
nl80211_family = strtoul(optarg, NULL, 10);
}
if (nl80211_family == GENL_ID_GENERATE) {
usage();
return EXIT_FAILURE;
}
break;
case 'i': case 'i':
ifname = optarg; ifname = optarg;
break; break;
@ -501,7 +524,7 @@ int main(int argc, char *argv[])
fprintf(stderr, "Invalid packet format\n"); fprintf(stderr, "Invalid packet format\n");
exit_status = EXIT_FAILURE; exit_status = EXIT_FAILURE;
} else } else
exit_status = process_pcap(pcap); exit_status = process_pcap(pcap, nl80211_family);
pcap_close(pcap); pcap_close(pcap);

4
monitor/nlmon.c
View File

@ -1624,13 +1624,13 @@ static void nlmon_message(struct nlmon *nlmon, const struct timeval *tv,
} }
} }
struct nlmon *nlmon_create(void) struct nlmon *nlmon_create(uint16_t id)
{ {
struct nlmon *nlmon; struct nlmon *nlmon;
nlmon = l_new(struct nlmon, 1); nlmon = l_new(struct nlmon, 1);
nlmon->id = GENL_ID_GENERATE; nlmon->id = id;
nlmon->req_list = l_queue_new(); nlmon->req_list = l_queue_new();
return nlmon; return nlmon;

2
monitor/nlmon.h
View File

@ -28,7 +28,7 @@ struct nlmon;
struct nlmon *nlmon_open(const char *ifname, uint16_t id, const char *pathname); struct nlmon *nlmon_open(const char *ifname, uint16_t id, const char *pathname);
void nlmon_close(struct nlmon *nlmon); void nlmon_close(struct nlmon *nlmon);
struct nlmon *nlmon_create(void); struct nlmon *nlmon_create(uint16_t id);
void nlmon_destroy(struct nlmon *nlmon); void nlmon_destroy(struct nlmon *nlmon);
void nlmon_print_rtnl(struct nlmon *nlmon, const struct timeval *tv, void nlmon_print_rtnl(struct nlmon *nlmon, const struct timeval *tv,
const void *data, uint32_t size); const void *data, uint32_t size);