IEEE80211_OUTPUT(9)    NetBSD Kernel Developer's Manual    IEEE80211_OUTPUT(9)

NAME
     ieee80211_encap, ieee80211_add_rates, ieee80211_add_xrates,
     ieee80211_send_mgmt -- software 802.11 stack output functions

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

     struct mbuf *
     ieee80211_encap(struct ieee80211com *ic, struct mbuf *m,
         struct ieee80211_node *ni);

     u_int8_t *
     ieee80211_add_rates(u_int8_t *frm, const struct ieee80211_rateset *rs);

     u_int8_t *
     ieee80211_add_xrates(u_int8_t *frm, const struct ieee80211_rateset *rs);

     int
     ieee80211_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni,
         int type, int arg);

DESCRIPTION
     These functions handle the encapsulation and transmission of 802.11
     frames within the software 802.11 stack.

     The ieee80211_encap() function encapsulates an outbound data frame con-
     tained within the mbuf chain m from the interface ic.  The argument ni is
     a reference to the destination node.

     If the function is successful, the mbuf chain is updated with the 802.11
     frame header prepended, and a pointer to the head of the chain is
     returned.  If an error occurs, NULL is returned.

     The ieee80211_add_rates() utility function is used to add the rate set
     element *rs to the frame frm.  A pointer to the location in the buffer
     after the addition of the rate set is returned.  It is typically used
     when constructing management frames from within the software 802.11
     stack.

     The ieee80211_add_xrates() utility function is used to add the extended
     rate set element *rs to the frame frm.  A pointer to the location in the
     buffer after the addition of the rate set is returned.  It is typically
     used when constructing management frames from within the software 802.11
     stack in 802.11g mode.

     The ieee80211_send_mgmt() function transmits a management frame on the
     interface ic to the destination node ni of type type.

     The argument arg specifies either a sequence number for authentication
     operations, a status code for [re]association operations, or a reason for
     deauthentication and deassociation operations.

     Nodes other than ic_bss have their reference count incremented to reflect
     their use for an indeterminate amount of time.  This reference is freed
     when the function returns.

     The function returns 0 if successful; if temporary buffer space is not
     available, the function returns ENOMEM.

SEE ALSO
     ieee80211(9)

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

AUTHORS
     This man page was written by Bruce M. Simpson <bms@FreeBSD.org> and
     Darron Broad <darron@kewl.org>.

NetBSD 5.0_STABLE             September 12, 2006             NetBSD 5.0_STABLE
