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bwn: remove unused ic_headroom

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Unlike bwi(4), bwn(4) does not rely on ic_headroom (despite having it
set) but splits the bwn_txhdr (first) segment into its own transaction.
Remove ic_headroom to avoid net80211 troubles with not enough space in
the mbuf around ieee80211_mbuf_adjust().

PR:		275616

(cherry picked from commit 59dba901f227420647e4856f03cb782a3375c220)
This commit is contained in:
Frank Hilgendorf 2023-12-13 23:48:08 +00:00 committed by Bjoern A. Zeeb
parent 64f1df32cf
commit 4e219655d0
1 changed files with 0 additions and 2 deletions
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2
sys/dev/bwn/if_bwn.c
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@ -808,8 +808,6 @@ bwn_attach_post(struct bwn_softc *sc)
/* call MI attach routine. */
ieee80211_ifattach(ic);
ic->ic_headroom = sizeof(struct bwn_txhdr);
/* override default methods */
ic->ic_raw_xmit = bwn_raw_xmit;
ic->ic_updateslot = bwn_updateslot;