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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
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <getopt.h>
#include <sys/socket.h>
@ -310,7 +311,7 @@ done:
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 timeval tv;
@ -327,7 +328,7 @@ static int process_pcap(struct pcap *pcap)
return EXIT_FAILURE;
}
nlmon = nlmon_create();
nlmon = nlmon_create(id);
while (pcap_read(pcap, &tv, buf, snaplen, &len, &real_len)) {
uint16_t arphrd_type;
@ -415,6 +416,7 @@ static const struct option main_options[] = {
{ "read", required_argument, NULL, 'r' },
{ "write", required_argument, NULL, 'w' },
{ "analyze", required_argument, NULL, 'a' },
{ "nl80211", required_argument, NULL, 'F' },
{ "interface", required_argument, NULL, 'i' },
{ "version", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' },
@ -426,6 +428,7 @@ int main(int argc, char *argv[])
const char *reader_path = NULL;
const char *analyze_path = NULL;
const char *ifname = "nlmon";
uint16_t nl80211_family = GENL_ID_GENERATE;
struct l_signal *signal;
struct l_netlink *genl;
sigset_t mask;
@ -434,7 +437,7 @@ int main(int argc, char *argv[])
for (;;) {
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);
if (opt < 0)
break;
@ -449,6 +452,26 @@ int main(int argc, char *argv[])
case 'a':
analyze_path = optarg;
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':
ifname = optarg;
break;
@ -501,7 +524,7 @@ int main(int argc, char *argv[])
fprintf(stderr, "Invalid packet format\n");
exit_status = EXIT_FAILURE;
} else
exit_status = process_pcap(pcap);
exit_status = process_pcap(pcap, nl80211_family);
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;
nlmon = l_new(struct nlmon, 1);
nlmon->id = GENL_ID_GENERATE;
nlmon->id = id;
nlmon->req_list = l_queue_new();
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);
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_print_rtnl(struct nlmon *nlmon, const struct timeval *tv,
const void *data, uint32_t size);