dev/ath/if_ath_tx.c

163  * Whether to use the 11n rate scenario functions or not
491  * Set the rate control fields in the given descriptor based on
494  * The bfs fields should already be set with the relevant rate
497  * Since the FreeBSD HAL currently sets up the first TX rate
500  * unconditionally for 11n chips. These require the 11n rate
503  * and 4 if multi-rate retry is needed.
589 			, bf->bf_state.bfs_try0		/* series 0 rate/tries */
593 			, bf->bf_state.bfs_ctsrate	/* rts/cts rate */
598 		 * First descriptor? Setup the rate control and initial
603 			 * setup first desc with rate and aggr info
656 	 * For non-AR9300 NICs, which require the rate control
660 	 * populate the last segment with rate control information
662 	 * that is fine, as the first frame already has rate control
665 	 * the rate info isn't copied.
671 	 * As to why the rate table is stashed in the last descriptor
1056  * This requires the rate control information be filled in,
1093 		 * highest CCK rate for RTS/CTS.  But stations
1094 		 * farther away may detect it at a lower CCK rate
1095 		 * so use the configured protection rate instead
1119  * Update the frame duration given the currently selected rate.
1158 			 * XXX TODO: ensure that the rate lookup for each
1159 			 * fragment is the same as the rate used by the
1170 			 * fragment by disabling multi-rate retry which updates
1171 			 * duration based on the multi-rate duration table.
1190 	 * CTS transmit rate is derived from the transmit rate
1191 	 * by looking in the h/w rate table.  We must also factor
1217 		printf("%s: HT rate where it shouldn't be (0x%x)\n",
1254  * To support rate lookups for each software retry, the rts/cts rate
1258  * mrr has been disabled; and the rate control lookup has been done.
1261  * XXX The 11n NICs support per-rate RTS/CTS configuration.
1285 	 * rate. Otherwise use the rate0 control rate.
1299 		/* Control rate from above */
1302 	/* Calculate the rtscts rate for the given cix */
1317 	 * Must disable multi-rate retry when using RTS/CTS.
1351 		, bf->bf_state.bfs_try0		/* series 0 rate/tries */
1355 		, bf->bf_state.bfs_ctsrate	/* rts/cts rate */
1365 	/* Set rate control and descriptor chain for this frame */
1371  * Do a rate lookup.
1373  * This performs a rate lookup for the given ath_buf only if it's required.
1381  * as they may depend upon the rate chosen.
1386 	uint8_t rate, rix;
1397 	    bf->bf_state.bfs_pktlen, &rix, &try0, &rate);
1401 	bf->bf_state.bfs_rc[0].ratecode = rate;
1412 	bf->bf_state.bfs_txrate0 = rate;
1494  * The frame must already be setup; rate control must already have
1549  * Retransmits fiddle with things like the rate control setup,
1623 	KASSERT(rt != NULL, ("no rate table, mode %u", sc->sc_curmode));
1641 	ismrr = 0;				/* default no multi-rate retry*/
1646 	 * setup for rate calculations, and select h/w transmit queue.
1678 		 * Data frames: multicast frames go out at a fixed rate,
1679 		 * EAPOL frames use the mgmt frame rate; otherwise consult
1680 		 * the rate control module for the rate to use.
1697 			 * Do rate lookup on each TX, rather than using
1823 	/* Blank the legacy rate array */
1827 	 * ath_buf_set_rate needs at least one rate/try to setup
1828 	 * the rate scenario.
1834 	/* Store the decided rate index values away */
2183 	KASSERT(rt != NULL, ("no rate table, mode %u", sc->sc_curmode));
2235 	/* Store the decided rate index values away */
2259 	/* Blank the legacy rate array */
2283 	 * All the required rate control decisions have been made;
4103 	 * punt to rate control if we're not being cleaned up
4479 	 * Update rate control - all frames have failed.
4715 	 * XXX rate control completion; it's at least consistent.
4749 	 * Copy the TX completion status and the rate control
4751 	 * before the rate control code can get its grubby fingers
4868 	 * Now we know how many frames were bad, call the rate
4955 	 * Update rate control status here, before we possibly
5226 		 * Do a rate control lookup on the first frame in the
5227 		 * list. The rate control code needs that to occur
5229 		 * It's inaccurate because the rate control code doesn't
5303 			 * Update the rate and rtscts information based on the
5304 			 * rate decision made by the rate control code;
5423 		/* Program descriptors + rate control */
5944  * to do rate control lookups and these are done with the TX