d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add 802.11-specific events that are dispatched through the routing socket.

Browse Source 
This really doesn't belong here but is preferred (for the moment) over
adding yet another mechanism for sending msgs from the kernel to user apps.

Reviewed by:	imp
This commit is contained in:
Sam Leffler 2004-10-05 19:48:33 +00:00
parent 0cc8f89a4a
commit b83a279f19
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=136155
2 changed files with 68 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/net/route.h
View File

@ -219,6 +219,7 @@ struct rt_msghdr {
#define RTM_NEWMADDR 0xf /* mcast group membership being added to if */
#define RTM_DELMADDR 0x10 /* mcast group membership being deleted */
#define RTM_IFANNOUNCE 0x11 /* iface arrival/departure */
#define RTM_IEEE80211 0x12 /* IEEE80211 wireless event */
/*
* Bitmask values for rtm_inits and rmx_locks.
@ -319,6 +320,7 @@ extern struct radix_node_head *rt_tables[AF_MAX+1];
struct ifmultiaddr;
int rt_getifa(struct rt_addrinfo *);
void rt_ieee80211msg(struct ifnet *, int, void *, size_t);
void rt_ifannouncemsg(struct ifnet *, int);
void rt_ifmsg(struct ifnet *);
void rt_missmsg(int, struct rt_addrinfo *, int, int);

79
sys/net/rtsock.c
View File

@ -675,6 +675,7 @@ rt_msg1(int type, struct rt_addrinfo *rtinfo)
break;
case RTM_IFANNOUNCE:
case RTM_IEEE80211:
len = sizeof(struct if_announcemsghdr);
break;
@ -932,6 +933,67 @@ rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
rt_dispatch(m, ifma->ifma_addr);
}
static struct mbuf *
rt_makeifannouncemsg(struct ifnet *ifp, int type, int what,
struct rt_addrinfo *info)
{
struct if_announcemsghdr *ifan;
struct mbuf *m;
if (route_cb.any_count == 0)
return NULL;
bzero((caddr_t)info, sizeof(*info));
m = rt_msg1(type, info);
if (m != NULL) {
ifan = mtod(m, struct if_announcemsghdr *);
ifan->ifan_index = ifp->if_index;
strlcpy(ifan->ifan_name, ifp->if_xname,
sizeof(ifan->ifan_name));
ifan->ifan_what = what;
}
return m;
}
/*
* This is called to generate routing socket messages indicating
* IEEE80211 wireless events.
* XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way.
*/
void
rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len)
{
struct mbuf *m;
struct rt_addrinfo info;
m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info);
if (m != NULL) {
/*
* Append the ieee80211 data. Try to stick it in the
* mbuf containing the ifannounce msg; otherwise allocate
* a new mbuf and append.
*
* NB: we assume m is a single mbuf.
*/
if (data_len > M_TRAILINGSPACE(m)) {
struct mbuf *n = m_get(M_NOWAIT, MT_DATA);
if (n == NULL) {
m_freem(m);
return;
}
bcopy(data, mtod(n, void *), data_len);
n->m_len = data_len;
m->m_next = n;
} else if (data_len > 0) {
bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len);
m->m_len += data_len;
}
if (m->m_flags & M_PKTHDR)
m->m_pkthdr.len += data_len;
mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len;
rt_dispatch(m, NULL);
}
}
/*
* This is called to generate routing socket messages indicating
* network interface arrival and departure.
@ -939,22 +1001,13 @@ rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
void
rt_ifannouncemsg(struct ifnet *ifp, int what)
{
struct if_announcemsghdr *ifan;
struct mbuf *m;
struct rt_addrinfo info;
if (route_cb.any_count == 0)
return;
bzero((caddr_t)&info, sizeof(info));
m = rt_msg1(RTM_IFANNOUNCE, &info);
if (m == NULL)
return;
ifan = mtod(m, struct if_announcemsghdr *);
ifan->ifan_index = ifp->if_index;
strlcpy(ifan->ifan_name, ifp->if_xname, sizeof(ifan->ifan_name));
ifan->ifan_what = what;
rt_dispatch(m, NULL);
}
m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info);
if (m != NULL)
rt_dispatch(m, NULL);
}
static void
rt_dispatch(struct mbuf *m, const struct sockaddr *sa)