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.\" $DragonFly: src/share/man/man9/ieee80211_crypto.9,v 1.3 2006/06/28 19:41:59 swildner Exp $
.\"
.Dd June 28, 2006
.Dt IEEE80211_CRYPTO 9
.Os
.Sh NAME
.Nm ieee80211_crypto_encap
.Nd 802.11 encryption function
.Sh SYNOPSIS
.In netproto/802_11/ieee80211_var.h
.Ft struct ieee80211_key *
.Fo ieee80211_crypto_encap
.Fa "struct ieee80211com *ic" "struct ieee80211_node *ni" "struct mbuf *m"
.Fc
.Sh DESCRIPTION
This function provides software encryption support
for 802.11 device drivers.
.Pp
.\"
The
.Fn ieee80211_crypto_encap
function runs the appropriate encryption algorithm over the 802.11
encapsulated frame held in the mbuf chain
.Fa m ,
for transmission on the interface
.Fa ic .
The
.Fa ni
argument specifies the target to which the encrypted frame will be transmitted.
It must not be
.Dv NULL ,
and is typically the return value of
.Xr ieee80211_find_txnode 9 .
.\"
.Sh IMPLEMENTATION NOTES
The key used to encrypt unicast frames is stored in
.Fa ni .
.\"
.Sh RETURN VALUES
If successful,
the key used to encrypt the frame is returned.
Otherwise,
.Dv NULL
is returned.
.\"
.Sh SEE ALSO
.Xr ieee80211 9 ,
.Xr ifnet 9
.Sh HISTORY
The
.Nm ieee80211
series of functions first appeared in
.Nx 1.5 ,
and were later ported to
.Fx 4.6 .
.Sh AUTHORS
.An -nosplit
This man page was written by
.An Sepherosa Ziehau
and
.An Sascha Wildner .