IEEE80211_INPUT(9) MidnightBSD Kernel Developer’s Manual IEEE80211_INPUT(9)

NAME

ieee80211_input, ieee80211_decap, ieee80211_recv_mgmt — software 802.11 stack input functions

SYNOPSIS

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_proto.h>

void

ieee80211_input(struct ifnet *ifp, struct mbuf *m, struct ieee80211_node *ni, int rssi, u_int32_t rstamp);

struct mbuf *

ieee80211_decap(struct ifnet *ifp, struct mbuf *m);

void

ieee80211_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, struct ieee80211_node *ni, int subtype, int rssi, u_int32_t rstamp);

DESCRIPTION

These functions process received 802.11 frames.

The ieee80211_input() function takes an mbuf chain m containing a complete 802.11 frame from the driver ifp and passes it to the software 802.11 stack for input processing. The ni argument specifies an instance of struct ieee80211_node (which may be driver-specific) representing the node from which the frame was received. The arguments rssi and stamp are typically derived from on-card data structures; they are used for recording the signal strength and time received of the frame respectively.

The ieee80211_decap() function performs decapsulation of the 802.11 frame in the mbuf chain m received by the device ifp, taking the form of the 802.11 address fields into account; the structure of 802.11 addresses vary according to the intended source and destination of the frame. It is typically called from within ieee80211_input().

The ieee80211_recv_mgmt() performs input processing for 802.11 management frames. It is typically called from within ieee80211_input().

SEE ALSO

ieee80211(9), ifnet(9)

HISTORY

The ieee80211 series of functions first appeared in NetBSD 1.5, and were later ported to FreeBSD 4.6.

AUTHORS

This manual page was written by Bruce M. Simpson 〈bms@FreeBSD.org〉 and Darron Broad 〈darron@kewl.org〉.

BUGS

There is no netisr queue specifically for the software 802.11 stack yet.

MidnightBSD 0.3 March 2, 2004 MidnightBSD 0.3