Include some preliminary TX HT rate scenario setup code.

The AR5416 and later TX descriptors have new fields for supporting
11n bits (eg 20/40mhz mode, short/long GI) and enabling/disabling
RTS/CTS protection per rate.

These functions will be responsible for initialising the TX descriptors
for the AR5416 and later chips for both HT and legacy frames.

Beacon frames will remain using the non-11n TX descriptor setup for now;
Linux ath9k does much the same.

Note that these functions aren't yet used anywhere; a few more framework
changes are needed before all of the right rate information is available
for TX.

1 files changed, 39 insertions, 0 deletions

diff --git a/sys/dev/ath/if_ath_tx_ht.h b/sys/dev/ath/if_ath_tx_ht.h
new file mode 100644
index 000000000000..ad4b74b2cc3c
--- /dev/null
+++ b/sys/dev/ath/if_ath_tx_ht.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ *    redistribution must be conditioned upon including a substantially
+ *    similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * $FreeBSD$
+ */
+#ifndef	__IF_ATH_TX_HT_H__
+#define	__IF_ATH_TX_HT_H__
+
+extern void	ath_buf_set_rate(struct ath_softc *sc,
+		struct ieee80211_node *ni, struct ath_buf *bf,
+		int pktlen, int flags, uint8_t ctsrate, uint8_t *rix,
+		uint8_t *try);
+
+#endif