Use the new d80211 API to generate RTS and CTS-to-self frames.
Signed-off-by: Michael Buesch <mb@xxxxxxxxx>
Index: bu3sch-wireless-dev/drivers/net/wireless/d80211/bcm43xx/bcm43xx_xmit.c
===================================================================
--- bu3sch-wireless-dev.orig/drivers/net/wireless/d80211/bcm43xx/bcm43xx_xmit.c 2007-02-05 14:01:40.000000000 +0100
+++ bu3sch-wireless-dev/drivers/net/wireless/d80211/bcm43xx/bcm43xx_xmit.c 2007-02-05 14:05:55.000000000 +0100
@@ -198,85 +198,6 @@ __le16 bcm43xx_calc_duration(const struc
return duration_id;
}
-static inline
-u16 ceiling_div(u16 dividend, u16 divisor)
-{
- return ((dividend + divisor - 1) / divisor);
-}
-
-//TODO
-#if 0
-static void bcm43xx_generate_rts(const struct bcm43xx_phy *phy,
- struct bcm43xx_txhdr_fw3 *txhdr,
- u16 *flags,
- u8 bitrate,
- const struct ieee80211_hdr *wlhdr)
-{
- u16 fctl;
- u16 dur;
- u8 fallback_bitrate;
- int ofdm_modulation;
- int fallback_ofdm_modulation;
- u8 *sa, *da;
- u16 flen;
-
- sa = ieee80211_get_SA((struct ieee80211_hdr *)wlhdr);
- da = ieee80211_get_DA((struct ieee80211_hdr *)wlhdr);
- fallback_bitrate = bcm43xx_calc_fallback_rate(bitrate);
- ofdm_modulation = !(bcm43xx_is_cck_rate(bitrate));
- fallback_ofdm_modulation = !(bcm43xx_is_cck_rate(fallback_bitrate));
-
- flen = sizeof(u16) + sizeof(u16) + ETH_ALEN + ETH_ALEN + FCS_LEN,
- bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->rts_cts_plcp),
- flen, bitrate);
- bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->rts_cts_fallback_plcp),
- flen, fallback_bitrate);
- fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS;
- dur = le16_to_cpu(wlhdr->duration_id);
-/*FIXME: should we test for dur==0 here and let it unmodified in this case?
- * The following assert checks for this case...
- */
-assert(dur);
-/*FIXME: The duration calculation is not really correct.
- * I am not 100% sure which bitrate to use. We use the RTS rate here,
- * but this is likely to be wrong.
- */
- if (phy->type == BCM43xx_PHYTYPE_A) {
- /* Three times SIFS */
- dur += 16 * 3;
- /* Add ACK duration. */
- dur += ceiling_div((16 + 8 * (14 /*bytes*/) + 6) * 10,
- bitrate * 4);
- /* Add CTS duration. */
- dur += ceiling_div((16 + 8 * (14 /*bytes*/) + 6) * 10,
- bitrate * 4);
- } else {
- /* Three times SIFS */
- dur += 10 * 3;
- /* Add ACK duration. */
- dur += ceiling_div(8 * (14 /*bytes*/) * 10,
- bitrate);
- /* Add CTS duration. */
- dur += ceiling_div(8 * (14 /*bytes*/) * 10,
- bitrate);
- }
-
- txhdr->rts_cts_frame_control = cpu_to_le16(fctl);
- txhdr->rts_cts_dur = cpu_to_le16(dur);
-//printk(MAC_FMT " " MAC_FMT " " MAC_FMT "\n", MAC_ARG(wlhdr->addr1), MAC_ARG(wlhdr->addr2), MAC_ARG(wlhdr->addr3));
-//printk(MAC_FMT " " MAC_FMT "\n", MAC_ARG(sa), MAC_ARG(da));
- memcpy(txhdr->rts_cts_mac1, wlhdr->addr1, ETH_ALEN);//FIXME!
- memcpy(txhdr->rts_cts_mac2, sa, ETH_ALEN);
-
- *flags |= BCM43xx_TXHDRFLAG_RTSCTS;
- *flags |= BCM43xx_TXHDRFLAG_RTS;
- if (ofdm_modulation)
- *flags |= BCM43xx_TXHDRFLAG_RTSCTS_OFDM;
- if (fallback_ofdm_modulation)
- *flags |= BCM43xx_TXHDRFLAG_RTSCTSFALLBACK_OFDM;
-}
-#endif
-
static void generate_txhdr_fw4(struct bcm43xx_wldev *dev,
struct bcm43xx_txhdr_fw4 *txhdr,
const unsigned char *fragment_data,
@@ -307,7 +228,6 @@ static void generate_txhdr_fw4(struct bc
txhdr->phy_rate = bcm43xx_plcp_get_ratecode_ofdm(rate);
else
txhdr->phy_rate = bcm43xx_plcp_get_ratecode_cck(rate);
- //TODO RTS phyrate
txhdr->mac_frame_ctl = wlhdr->frame_control;
memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
txhdr->dur_fb = bcm43xx_calc_duration(wlhdr, rate_fb);
@@ -386,8 +306,47 @@ static void generate_txhdr_fw4(struct bc
if (phy->type == BCM43xx_PHYTYPE_A)
mac_ctl |= BCM43xx_TX4_MAC_5GHZ;
- if (txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
- //TODO
+ /* Generate the RTS or CTS-to-self frame */
+ if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
+ (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
+ unsigned int len;
+ struct ieee80211_hdr *hdr;
+ int rts_rate, rts_rate_fb;
+ int rts_rate_ofdm, rts_rate_fb_ofdm;
+
+ rts_rate = txctl->rts_cts_rate;
+ rts_rate_ofdm = bcm43xx_is_ofdm_rate(rts_rate);
+ rts_rate_fb = bcm43xx_calc_fallback_rate(rts_rate);
+ rts_rate_fb_ofdm = bcm43xx_is_ofdm_rate(rts_rate_fb);
+
+ if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
+ ieee80211_ctstoself_get(dev->wl->hw,
+ fragment_data, fragment_len, txctl,
+ (struct ieee80211_cts *)(txhdr->rts_frame));
+ mac_ctl |= BCM43xx_TX4_MAC_SENDCTS;
+ len = sizeof(struct ieee80211_cts);
+ } else {
+ ieee80211_rts_get(dev->wl->hw,
+ fragment_data, fragment_len, txctl,
+ (struct ieee80211_rts *)(txhdr->rts_frame));
+ mac_ctl |= BCM43xx_TX4_MAC_SENDRTS;
+ len = sizeof(struct ieee80211_rts);
+ }
+ len += FCS_LEN;
+ bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->rts_plcp),
+ len, rts_rate);
+ bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->rts_plcp_fb),
+ len, rts_rate_fb);
+ hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
+ txhdr->rts_dur_fb = hdr->duration_id;
+ if (rts_rate_ofdm) {
+ extra_ft |= BCM43xx_TX4_EFT_RTSOFDM;
+ txhdr->phy_rate_rts = bcm43xx_plcp_get_ratecode_ofdm(rts_rate);
+ } else
+ txhdr->phy_rate_rts = bcm43xx_plcp_get_ratecode_cck(rts_rate);
+ if (rts_rate_fb_ofdm)
+ extra_ft |= BCM43xx_TX4_EFT_RTSFBOFDM;
+ mac_ctl |= BCM43xx_TX4_MAC_LONGFRAME;
}
/* Magic cookie */
--
Greetings Michael.
-
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