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monitor: Read the generic netlink id from the trace file

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This commit is contained in:
Marcel Holtmann 2014-08-06 00:27:19 +02:00
parent d484715a17
commit 8b11aedacd
1 changed files with 35 additions and 2 deletions
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37
monitor/nlmon.c
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@ -919,7 +919,7 @@ struct nlmon *nlmon_create(void)
nlmon = l_new(struct nlmon, 1);
nlmon->id = 27;
nlmon->id = GENL_ID_GENERATE;
nlmon->req_list = l_queue_new();
return nlmon;
@ -935,13 +935,46 @@ void nlmon_destroy(struct nlmon *nlmon)
l_free(nlmon);
}
static void genl_ctrl(struct nlmon *nlmon, const void *data, uint32_t len)
{
const struct genlmsghdr *genlmsg = data;
const struct nlattr *nla;
char name[GENL_NAMSIZ];
uint16_t id = GENL_ID_GENERATE;
if (genlmsg->cmd != CTRL_CMD_NEWFAMILY)
return;
for (nla = data + GENL_HDRLEN; NLA_OK(nla, len);
nla = NLA_NEXT(nla, len)) {
switch (nla->nla_type & NLA_TYPE_MASK) {
case CTRL_ATTR_FAMILY_ID:
id = *((uint16_t *) NLA_DATA(nla));
break;
case CTRL_ATTR_FAMILY_NAME:
strncpy(name, NLA_DATA(nla), GENL_NAMSIZ);
break;
}
}
if (id == GENL_ID_GENERATE)
return;
if (!strcmp(name, NL80211_GENL_NAME))
nlmon->id = id;
}
void nlmon_print(struct nlmon *nlmon, const void *data, uint32_t size)
{
const struct nlmsghdr *nlmsg;
for (nlmsg = data; NLMSG_OK(nlmsg, size);
nlmsg = NLMSG_NEXT(nlmsg, size)) {
nlmon_message(nlmon, nlmsg);
if (nlmsg->nlmsg_type == GENL_ID_CTRL)
genl_ctrl(nlmon, NLMSG_DATA(nlmsg),
NLMSG_PAYLOAD(nlmsg, 0));
else
nlmon_message(nlmon, nlmsg);
}
}