openwrt/package/madwifi/patches/425-rc_rexmit.patch

--- a/net80211/ieee80211_rate.h
+++ b/net80211/ieee80211_rate.h
@@ -81,6 +81,8 @@ struct ieee80211vap;
 
 /* Multi-rare retry: 3 additional rate/retry pairs */
 struct ieee80211_mrr {
+	int rate0;
+	int retries0;
 	int rate1;
 	int retries1;
 	int rate2;
@@ -142,7 +144,7 @@ struct ieee80211_rate_ops {
 	 * for packets that were successfully sent and for those that
 	 * failed (consult the descriptor for details). */
 	void (*tx_complete)(struct ath_softc *sc, struct ath_node *an,
-			    const struct ath_buf *bf);
+			    const struct ath_buf *bf, const struct ieee80211_mrr *mrr);
 };
 
 struct ath_ratectrl {
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -8635,6 +8635,8 @@ ath_tx_processq(struct ath_softc *sc, st
 
 		ni = bf->bf_node;
 		if (ni != NULL) {
+			struct ieee80211_mrr mrr;
+
 			an = ATH_NODE(ni);
 			if (ts->ts_status == 0) {
 				u_int8_t txant = ts->ts_antenna;
@@ -8687,15 +8689,43 @@ ath_tx_processq(struct ath_softc *sc, st
 			lr = ts->ts_longretry;
 			sc->sc_stats.ast_tx_shortretry += sr;
 			sc->sc_stats.ast_tx_longretry += lr;
+			memset(&mrr, 0, sizeof(mrr));
+
+			switch(ah->ah_macType) {
+			case 5210:
+			case 5211:
+				goto skip_mrr;
+
+			case 5212:
+				mrr.rate0 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate0)].ieeerate;
+				mrr.rate1 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate1)].ieeerate;
+				mrr.rate2 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate2)].ieeerate;
+				mrr.rate3 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate3)].ieeerate;
+				break;
+
+			case 5416:
+				mrr.rate0 = sc->sc_hwmap[MS(ds->ds_ctl3, AR5416_XmitRate0)].ieeerate;
+				mrr.rate1 = sc->sc_hwmap[MS(ds->ds_ctl3, AR5416_XmitRate1)].ieeerate;
+				mrr.rate2 = sc->sc_hwmap[MS(ds->ds_ctl3, AR5416_XmitRate2)].ieeerate;
+				mrr.rate3 = sc->sc_hwmap[MS(ds->ds_ctl3, AR5416_XmitRate3)].ieeerate;
+				break;
+			}
+
+			mrr.retries0 = MS(ds->ds_ctl2, AR_XmitDataTries0);
+			mrr.retries1 = MS(ds->ds_ctl2, AR_XmitDataTries1);
+			mrr.retries2 = MS(ds->ds_ctl2, AR_XmitDataTries2);
+			mrr.retries3 = MS(ds->ds_ctl2, AR_XmitDataTries3);
+
 			/*
 			 * Hand the descriptor to the rate control algorithm
 			 * if the frame wasn't dropped for filtering or sent
 			 * w/o waiting for an ack.  In those cases the rssi
 			 * and retry counts will be meaningless.
 			 */
+skip_mrr:
 			if ((ts->ts_status & HAL_TXERR_FILT) == 0 &&
 			    (bf->bf_flags & HAL_TXDESC_NOACK) == 0)
-				sc->sc_rc->ops->tx_complete(sc, an, bf);
+				sc->sc_rc->ops->tx_complete(sc, an, bf, &mrr);
 		}
 
 		bus_unmap_single(sc->sc_bdev, bf->bf_skbaddr,
--- a/ath/if_athvar.h
+++ b/ath/if_athvar.h
@@ -595,6 +595,46 @@ struct ath_vap {
 	(_tqs)->axq_link = NULL; \
 } while (0)
 
+/*
+ * Definitions for pulling the rate and trie counts from
+ * a 5212 h/w descriptor. These Don't belong here; the
+ * driver should record this information so the rate control
+ * code doesn't go groveling around in the descriptor bits.
+ */
+#define	ds_ctl2	ds_hw[0]
+#define	ds_ctl3	ds_hw[1]
+
+/* TX ds_ctl3 */
+#define	AR_XmitDataTries0	0x000f0000	/* series 0 max attempts */
+#define	AR_XmitDataTries0_S	16
+#define	AR_XmitDataTries1	0x00f00000	/* series 1 max attempts */
+#define	AR_XmitDataTries1_S	20
+#define	AR_XmitDataTries2	0x0f000000	/* series 2 max attempts */
+#define	AR_XmitDataTries2_S	24
+#define	AR_XmitDataTries3	0xf0000000	/* series 3 max attempts */
+#define	AR_XmitDataTries3_S	28
+
+/* TX ds_ctl3 */
+#define	AR_XmitRate0		0x0000001f	/* series 0 tx rate */
+#define	AR_XmitRate0_S		0
+#define	AR_XmitRate1		0x000003e0	/* series 1 tx rate */
+#define	AR_XmitRate1_S		5
+#define	AR_XmitRate2		0x00007c00	/* series 2 tx rate */
+#define	AR_XmitRate2_S		10
+#define	AR_XmitRate3		0x000f8000	/* series 3 tx rate */
+#define	AR_XmitRate3_S		15
+
+#define AR5416_XmitRate0        0x000000ff
+#define AR5416_XmitRate0_S      0
+#define AR5416_XmitRate1        0x0000ff00
+#define AR5416_XmitRate1_S      8
+#define AR5416_XmitRate2        0x00ff0000
+#define AR5416_XmitRate2_S      16
+#define AR5416_XmitRate3        0xff000000
+#define AR5416_XmitRate3_S      24
+
+#define MS(_v, _f)	(((_v) & (_f)) >> _f##_S)
+
 /* 
  * concat buffers from one queue to other
  */
--- a/ath_rate/amrr/amrr.c
+++ b/ath_rate/amrr/amrr.c
@@ -123,7 +123,8 @@ ath_rate_get_mrr(struct ath_softc *sc, s
 
 static void
 ath_rate_tx_complete(struct ath_softc *sc,
-	struct ath_node *an, const struct ath_buf *bf)
+	struct ath_node *an, const struct ath_buf *bf,
+	const struct ieee80211_mrr *mrr)
 {
 	struct amrr_node *amn = ATH_NODE_AMRR(an);
 	const struct ath_tx_status *ts = &bf->bf_dsstatus.ds_txstat;
--- a/ath_rate/minstrel/minstrel.c
+++ b/ath_rate/minstrel/minstrel.c
@@ -333,7 +333,8 @@ ath_rate_get_mrr(struct ath_softc *sc, s
 
 static void
 ath_rate_tx_complete(struct ath_softc *sc,
-		struct ath_node *an, const struct ath_buf *bf)
+		struct ath_node *an, const struct ath_buf *bf,
+		const struct ieee80211_mrr *mrr)
 {
 		struct minstrel_node *sn = ATH_NODE_MINSTREL(an);
 		struct ieee80211com *ic = &sc->sc_ic;
@@ -341,12 +342,9 @@ ath_rate_tx_complete(struct ath_softc *s
 		const struct ath_desc *ds = &bf->bf_desc[0];
 		int final_rate = 0;
 		int tries = 0;
-		int mrr;
+		int use_mrr;
 		int final_ndx;
-		int rate0, tries0, ndx0;
-		int rate1, tries1, ndx1;
-		int rate2, tries2, ndx2;
-		int rate3, tries3, ndx3;
+		int ndx0, ndx1, ndx2, ndx3;
 
 		/* This is the index in the retry chain we finish at.
 		 * With no retransmits, it is always 0.
@@ -376,9 +374,9 @@ ath_rate_tx_complete(struct ath_softc *s
 		if (!ts->ts_status)  /* Success when sending a packet*/
 			sn->rs_ratesuccess[final_ndx]++;
 
-		mrr = sc->sc_mrretry && !(ic->ic_flags & IEEE80211_F_USEPROT) && ENABLE_MRR;
+		use_mrr = sc->sc_mrretry && !(ic->ic_flags & IEEE80211_F_USEPROT) && ENABLE_MRR;
 
-		if (!mrr) {
+		if (!use_mrr) {
 			if ((0 <= final_ndx) && (final_ndx < sn->num_rates)) {
 				sn->rs_rateattempts[final_ndx] += tries; /* only one rate was used */
 			}
@@ -388,47 +386,36 @@ ath_rate_tx_complete(struct ath_softc *s
 		/* Now, query the hal/hardware to find out the contents of the multirate retry chain.
 		 * If we have it set to 6,3,2,2, this call will always return 6,3,2,2. For some packets, we can
 		 * get a mrr of 0, -1, -1, -1, which indicates there is no chain installed for that packet */
-		rate0 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate0)].ieeerate;
-		tries0 = MS(ds->ds_ctl2, AR_XmitDataTries0);
-		ndx0 = rate_to_ndx(sn, rate0);
+		ndx0 = rate_to_ndx(sn, mrr->rate0);
+		ndx1 = rate_to_ndx(sn, mrr->rate1);
+		ndx2 = rate_to_ndx(sn, mrr->rate2);
+		ndx3 = rate_to_ndx(sn, mrr->rate3);
 
-		rate1 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate1)].ieeerate;
-		tries1 = MS(ds->ds_ctl2, AR_XmitDataTries1);
-		ndx1 = rate_to_ndx(sn, rate1);
-
-		rate2 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate2)].ieeerate;
-		tries2 = MS(ds->ds_ctl2, AR_XmitDataTries2);
-		ndx2 = rate_to_ndx(sn, rate2);
-
-		rate3 = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate3)].ieeerate;
-		tries3 = MS(ds->ds_ctl2, AR_XmitDataTries3);
-		ndx3 = rate_to_ndx(sn, rate3);
-
-		sn->rs_rateattempts[ndx0] += MIN(tries, tries0);
-		if (tries <= tries0)
+		sn->rs_rateattempts[ndx0] += MIN(tries, mrr->retries0);
+		if (tries <= mrr->retries0)
 			return;
 
-		if (tries1 < 0)
+		if (mrr->retries1 < 0)
 			return;
-		tries = tries - tries0;
-		sn->rs_rateattempts[ndx1] += MIN(tries, tries1);
-		if (tries <= tries1)
+		tries = tries - mrr->retries0;
+		sn->rs_rateattempts[ndx1] += MIN(tries, mrr->retries1);
+		if (tries <= mrr->retries1)
 			return;
 
 		if (bf->rcflags)
 			sn->sample_count++;
 
-		if  (tries2 < 0)
+		if (mrr->retries2 < 0)
 			return;
-		tries = tries - tries1;
-		sn->rs_rateattempts[ndx2] += MIN(tries, tries2);
-		if (tries <= tries2)
+		tries = tries - mrr->retries1;
+		sn->rs_rateattempts[ndx2] += MIN(tries, mrr->retries2);
+		if (tries <= mrr->retries2)
 			return;
 
-		if  (tries3 < 0)
+		if (mrr->retries3 < 0)
 			return;
-		tries = tries - tries2;
-		sn->rs_rateattempts[ndx3] += MIN(tries, tries3);
+		tries = tries - mrr->retries2;
+		sn->rs_rateattempts[ndx3] += MIN(tries, mrr->retries3);
 }
 
 static void
--- a/ath_rate/minstrel/minstrel.h
+++ b/ath_rate/minstrel/minstrel.h
@@ -172,36 +172,6 @@ struct minstrel_node {
 
 #define	ATH_NODE_MINSTREL(an)	((struct minstrel_node *)&an[1])
 
-/*
- * Definitions for pulling the rate and trie counts from
- * a 5212 h/w descriptor. These Don't belong here; the
- * driver should record this information so the rate control
- * code doesn't go groveling around in the descriptor bits.
- */
-#define	ds_ctl2	ds_hw[0]
-#define	ds_ctl3	ds_hw[1]
-
-/* TX ds_ctl3 */
-#define	AR_XmitDataTries0	0x000f0000	/* series 0 max attempts */
-#define	AR_XmitDataTries0_S	16
-#define	AR_XmitDataTries1	0x00f00000	/* series 1 max attempts */
-#define	AR_XmitDataTries1_S	20
-#define	AR_XmitDataTries2	0x0f000000	/* series 2 max attempts */
-#define	AR_XmitDataTries2_S	24
-#define	AR_XmitDataTries3	0xf0000000	/* series 3 max attempts */
-#define	AR_XmitDataTries3_S	28
-
-/* TX ds_ctl3 */
-#define	AR_XmitRate0		0x0000001f	/* series 0 tx rate */
-#define	AR_XmitRate0_S		0
-#define	AR_XmitRate1		0x000003e0	/* series 1 tx rate */
-#define	AR_XmitRate1_S		5
-#define	AR_XmitRate2		0x00007c00	/* series 2 tx rate */
-#define	AR_XmitRate2_S		10
-#define	AR_XmitRate3		0x000f8000	/* series 3 tx rate */
-#define	AR_XmitRate3_S		15
-
-#define MS(_v, _f)	(((_v) & (_f)) >> _f##_S)
 #endif /* _DEV_ATH_RATE_MINSTEL_H */
 
 /* The comment below is magic for those who use emacs to edit this file. */
--- a/ath_rate/onoe/onoe.c
+++ b/ath_rate/onoe/onoe.c
@@ -137,7 +137,8 @@ ath_rate_get_mrr(struct ath_softc *sc, s
 
 static void
 ath_rate_tx_complete(struct ath_softc *sc,
-	struct ath_node *an, const struct ath_buf *bf)
+	struct ath_node *an, const struct ath_buf *bf,
+	const struct ieee80211_mrr *mrr)
 {
 	struct onoe_node *on = ATH_NODE_ONOE(an);
 	const struct ath_tx_status *ts = &bf->bf_dsstatus.ds_txstat;
--- a/ath_rate/sample/sample.c
+++ b/ath_rate/sample/sample.c
@@ -178,10 +178,6 @@ static __inline int best_rate_ndx(struct
 		    !sn->stats[size_bin][x].packets_acked))
 			continue;
 
-		/* 9 megabits never works better than 12 */
-		if (sn->rates[x].rate == 18)
-			continue;
-
 		/* don't use a bit-rate that has been failing */
 		if (sn->stats[size_bin][x].successive_failures > 3)
 			continue;
@@ -234,10 +230,6 @@ pick_sample_ndx(struct sample_node *sn, 
 		if (sn->rates[ndx].rate > 22 && ndx > current_ndx + 2)
 			continue;
 
-		/* 9 megabits never works better than 12 */
-		if (sn->rates[ndx].rate == 18)
-			continue;
-
 		/* if we're using 11 megabits, only sample up to 12 megabits
 		 */
 		if (sn->rates[current_ndx].rate == 22 && ndx > current_ndx + 1)
@@ -531,7 +523,8 @@ update_stats(struct ath_softc *sc, struc
 
 static void
 ath_rate_tx_complete(struct ath_softc *sc,
-	struct ath_node *an, const struct ath_buf *bf)
+	struct ath_node *an, const struct ath_buf *bf,
+	const struct ieee80211_mrr *mrr)
 {
 	struct sample_node *sn = ATH_NODE_SAMPLE(an);
 	struct ieee80211com *ic = &sc->sc_ic;
@@ -541,7 +534,7 @@ ath_rate_tx_complete(struct ath_softc *s
 	unsigned int short_tries;
 	unsigned int long_tries;
 	unsigned int frame_size;
-	unsigned int mrr;
+	unsigned int use_mrr;
 
 	final_rate = sc->sc_hwmap[ts->ts_rate &~ HAL_TXSTAT_ALTRATE].ieeerate;
 	short_tries = ts->ts_shortretry + 1;
@@ -557,7 +550,7 @@ ath_rate_tx_complete(struct ath_softc *s
 		return;
 	}
 
-	mrr = sc->sc_mrretry && !(ic->ic_flags & IEEE80211_F_USEPROT) && ENABLE_MRR;
+	use_mrr = sc->sc_mrretry && !(ic->ic_flags & IEEE80211_F_USEPROT) && ENABLE_MRR;
 
 
 	if (sc->sc_mrretry && ts->ts_status) {
@@ -566,22 +559,15 @@ ath_rate_tx_complete(struct ath_softc *s
 			dev_info,
 			MAC_ADDR(an->an_node.ni_macaddr),
 			bin_to_size(size_to_bin(frame_size)),
-			sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate0)].ieeerate,
-				MS(ds->ds_ctl2, AR_XmitDataTries0),
-			sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate1)].ieeerate,
-				MS(ds->ds_ctl2, AR_XmitDataTries1),
-			sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate2)].ieeerate,
-				MS(ds->ds_ctl2, AR_XmitDataTries2),
-			sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate3)].ieeerate,
-				MS(ds->ds_ctl2, AR_XmitDataTries3),
+			mrr->rate0,
+			mrr->rate1,
+			mrr->rate2,
+			mrr->rate3,
 			ts->ts_status ? "FAIL" : "OK",
 			short_tries, long_tries);
 	}
 
-	mrr = sc->sc_mrretry && !(ic->ic_flags & IEEE80211_F_USEPROT) && ENABLE_MRR;
-
-
-	if (!mrr || !(ts->ts_rate & HAL_TXSTAT_ALTRATE)) {
+	if (!use_mrr || !(ts->ts_rate & HAL_TXSTAT_ALTRATE)) {
 		/* only one rate was used */
 		int ndx = rate_to_ndx(sn, final_rate);
 		if ((ndx >= 0) && (ndx < sn->num_rates)) {
@@ -593,7 +579,6 @@ ath_rate_tx_complete(struct ath_softc *s
 				short_tries, long_tries, ts->ts_status);
 		}
 	} else {
-		unsigned int rate[4], tries[4];
 		int ndx[4];
 		int finalTSIdx = ts->ts_finaltsi;
 
@@ -601,21 +586,10 @@ ath_rate_tx_complete(struct ath_softc *s
 		 * Process intermediate rates that failed.
 		 */
 
-		rate[0] = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate0)].ieeerate;
-		tries[0] = MS(ds->ds_ctl2, AR_XmitDataTries0);
-		ndx[0] = rate_to_ndx(sn, rate[0]);
-
-		rate[1] = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate1)].ieeerate;
-		tries[1] = MS(ds->ds_ctl2, AR_XmitDataTries1);
-		ndx[1] = rate_to_ndx(sn, rate[1]);
-
-		rate[2] = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate2)].ieeerate;
-		tries[2] = MS(ds->ds_ctl2, AR_XmitDataTries2);
-		ndx[2] = rate_to_ndx(sn, rate[2]);
-
-		rate[3] = sc->sc_hwmap[MS(ds->ds_ctl3, AR_XmitRate3)].ieeerate;
-		tries[3] = MS(ds->ds_ctl2, AR_XmitDataTries3);
-		ndx[3] = rate_to_ndx(sn, rate[3]);
+		ndx[0] = rate_to_ndx(sn, mrr->rate0);
+		ndx[1] = rate_to_ndx(sn, mrr->rate1);
+		ndx[2] = rate_to_ndx(sn, mrr->rate2);
+		ndx[3] = rate_to_ndx(sn, mrr->rate3);
 
 #if 0
 		DPRINTF(sc, ATH_DEBUG_RATE, "%s: " MAC_FMT " size %u finaltsidx %u tries %u status %u rate/try %u/%u %u/%u %u/%u %u/%u\n",
@@ -636,43 +610,43 @@ ath_rate_tx_complete(struct ath_softc *s
 		 * sample higher rates 1 try at a time doing so
 		 * may unfairly penalize them.
 		 */
-		if (tries[0] && ndx[0] >= 0) {
+		if (mrr->retries0 && ndx[0] >= 0) {
 			update_stats(sc, an, frame_size,
-				ndx[0], tries[0],
-				ndx[1], tries[1],
-				ndx[2], tries[2],
-				ndx[3], tries[3],
+				ndx[0], mrr->retries0,
+				ndx[1], mrr->retries1,
+				ndx[2], mrr->retries2,
+				ndx[3], mrr->retries3,
 				short_tries, long_tries,
-				long_tries > tries[0]);
-			long_tries -= tries[0];
+				long_tries > mrr->retries0);
+			long_tries -= mrr->retries0;
 
 		}
 
-		if (tries[1] && ndx[1] >= 0 && finalTSIdx > 0) {
+		if (mrr->retries1 && ndx[1] >= 0 && finalTSIdx > 0) {
 			update_stats(sc, an, frame_size,
-				ndx[1], tries[1],
-				ndx[2], tries[2],
-				ndx[3], tries[3],
+				ndx[1], mrr->retries1,
+				ndx[2], mrr->retries2,
+				ndx[3], mrr->retries3,
 				0, 0,
 				short_tries, long_tries,
 				ts->ts_status);
-			long_tries -= tries[1];
+			long_tries -= mrr->retries1;
 		}
 
-		if (tries[2] && ndx[2] >= 0 && finalTSIdx > 1) {
+		if (mrr->retries2 && ndx[2] >= 0 && finalTSIdx > 1) {
 			update_stats(sc, an, frame_size,
-				ndx[2], tries[2],
-				ndx[3], tries[3],
+				ndx[2], mrr->retries2,
+				ndx[3], mrr->retries3,
 				0, 0,
 				0, 0,
 				short_tries, long_tries,
 				ts->ts_status);
-			long_tries -= tries[2];
+			long_tries -= mrr->retries2;
 		}
 
-		if (tries[3] && ndx[3] >= 0 && finalTSIdx > 2) {
+		if (mrr->retries3 && ndx[3] >= 0 && finalTSIdx > 2) {
 			update_stats(sc, an, frame_size,
-				ndx[3], tries[3],
+				ndx[3], mrr->retries3,
 				0, 0,
 				0, 0,
 				0, 0,
--- a/ath_rate/sample/sample.h
+++ b/ath_rate/sample/sample.h
@@ -98,35 +98,4 @@ struct sample_node {
 };
 #define	ATH_NODE_SAMPLE(an)	((struct sample_node *)&an[1])
 
-/*
- * Definitions for pulling the rate and trie counts from
- * a 5212 h/w descriptor. These Don't belong here; the
- * driver should record this information so the rate control
- * code doesn't go groveling around in the descriptor bits.
- */
-#define	ds_ctl2	ds_hw[0]
-#define	ds_ctl3	ds_hw[1]
-
-/* TX ds_ctl3 */
-#define	AR_XmitDataTries0	0x000f0000	/* series 0 max attempts */
-#define	AR_XmitDataTries0_S	16
-#define	AR_XmitDataTries1	0x00f00000	/* series 1 max attempts */
-#define	AR_XmitDataTries1_S	20
-#define	AR_XmitDataTries2	0x0f000000	/* series 2 max attempts */
-#define	AR_XmitDataTries2_S	24
-#define	AR_XmitDataTries3	0xf0000000	/* series 3 max attempts */
-#define	AR_XmitDataTries3_S	28
-
-/* TX ds_ctl3 */
-#define	AR_XmitRate0		0x0000001f	/* series 0 tx rate */
-#define	AR_XmitRate0_S		0
-#define	AR_XmitRate1		0x000003e0	/* series 1 tx rate */
-#define	AR_XmitRate1_S		5
-#define	AR_XmitRate2		0x00007c00	/* series 2 tx rate */
-#define	AR_XmitRate2_S		10
-#define	AR_XmitRate3		0x000f8000	/* series 3 tx rate */
-#define	AR_XmitRate3_S		15
-
-#define MS(_v, _f)	(((_v) & (_f)) >> _f##_S)
-
 #endif /* _DEV_ATH_RATE_SAMPLE_H */