mac80211: move TX info into skb->cb

This patch converts mac80211 and all drivers to have transmit
information and status in skb->cb rather than allocating extra
memory for it and copying all the data around. To make it fit,
a union is used where only data that is necessary for all steps
is kept outside of the union.

A number of fixes were done by Ivo, as well as the rt2x00 part
of this patch.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 22 insertions, 22 deletions

diff --git a/drivers/net/wireless/b43legacy/xmit.c b/drivers/net/wireless/b43legacy/xmit.c
index 55dc251bf51..82dc04d5944 100644
--- a/drivers/net/wireless/b43legacy/xmit.c
+++ b/drivers/net/wireless/b43legacy/xmit.c
@@ -188,11 +188,11 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
                                struct b43legacy_txhdr_fw3 *txhdr,
                                const unsigned char *fragment_data,
                                unsigned int fragment_len,
-                               const struct ieee80211_tx_control *txctl,
+                               const struct ieee80211_tx_info *info,
                                u16 cookie)
 {
         const struct ieee80211_hdr *wlhdr;
-        int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
+        int use_encryption = (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT));
         u16 fctl;
         u8 rate;
         struct ieee80211_rate *rate_fb;
@@ -208,11 +208,11 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
 
         memset(txhdr, 0, sizeof(*txhdr));
 
-        tx_rate = ieee80211_get_tx_rate(dev->wl->hw, txctl);
+        tx_rate = ieee80211_get_tx_rate(dev->wl->hw, info);
 
         rate = tx_rate->hw_value;
         rate_ofdm = b43legacy_is_ofdm_rate(rate);
-        rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, txctl) ? : tx_rate;
+        rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info) ? : tx_rate;
         rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb->hw_value);
 
         txhdr->mac_frame_ctl = wlhdr->frame_control;
@@ -228,14 +228,14 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
                 txhdr->dur_fb = wlhdr->duration_id;
         } else {
                 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
-                                                         txctl->vif,
+                                                         info->control.vif,
                                                          fragment_len,
                                                          rate_fb);
         }
 
         plcp_fragment_len = fragment_len + FCS_LEN;
         if (use_encryption) {
-                u8 key_idx = txctl->hw_key->hw_key_idx;
+                u8 key_idx = info->control.hw_key->hw_key_idx;
                 struct b43legacy_key *key;
                 int wlhdr_len;
                 size_t iv_len;
@@ -245,7 +245,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
 
                 if (key->enabled) {
                         /* Hardware appends ICV. */
-                        plcp_fragment_len += txctl->icv_len;
+                        plcp_fragment_len += info->control.icv_len;
 
                         key_idx = b43legacy_kidx_to_fw(dev, key_idx);
                         mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) &
@@ -254,7 +254,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
                                    B43legacy_TX4_MAC_KEYALG_SHIFT) &
                                    B43legacy_TX4_MAC_KEYALG;
                         wlhdr_len = ieee80211_get_hdrlen(fctl);
-                        iv_len = min((size_t)txctl->iv_len,
+                        iv_len = min((size_t)info->control.iv_len,
                                      ARRAY_SIZE(txhdr->iv));
                         memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len);
                 } else {
@@ -278,7 +278,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
                 phy_ctl |= B43legacy_TX4_PHY_OFDM;
         if (dev->short_preamble)
                 phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL;
-        switch (txctl->antenna_sel_tx) {
+        switch (info->antenna_sel_tx) {
         case 0:
                 phy_ctl |= B43legacy_TX4_PHY_ANTLAST;
                 break;
@@ -293,21 +293,21 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
         }
 
         /* MAC control */
-        if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
+        if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
                 mac_ctl |= B43legacy_TX4_MAC_ACK;
         if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
               ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
                 mac_ctl |= B43legacy_TX4_MAC_HWSEQ;
-        if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
+        if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
                 mac_ctl |= B43legacy_TX4_MAC_STMSDU;
         if (rate_fb_ofdm)
                 mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM;
-        if (txctl->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
+        if (info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
                 mac_ctl |= B43legacy_TX4_MAC_LONGFRAME;
 
         /* Generate the RTS or CTS-to-self frame */
-        if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
-            (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
+        if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
+            (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
                 unsigned int len;
                 struct ieee80211_hdr *hdr;
                 int rts_rate;
@@ -315,26 +315,26 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
                 int rts_rate_ofdm;
                 int rts_rate_fb_ofdm;
 
-                rts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, txctl)->hw_value;
+                rts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info)->hw_value;
                 rts_rate_ofdm = b43legacy_is_ofdm_rate(rts_rate);
                 rts_rate_fb = b43legacy_calc_fallback_rate(rts_rate);
                 rts_rate_fb_ofdm = b43legacy_is_ofdm_rate(rts_rate_fb);
                 if (rts_rate_fb_ofdm)
                         mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM;
 
-                if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
+                if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
                         ieee80211_ctstoself_get(dev->wl->hw,
-                                                txctl->vif,
+                                                info->control.vif,
                                                 fragment_data,
-                                                fragment_len, txctl,
+                                                fragment_len, info,
                                                 (struct ieee80211_cts *)
                                                 (txhdr->rts_frame));
                         mac_ctl |= B43legacy_TX4_MAC_SENDCTS;
                         len = sizeof(struct ieee80211_cts);
                 } else {
                         ieee80211_rts_get(dev->wl->hw,
-                                          txctl->vif,
-                                          fragment_data, fragment_len, txctl,
+                                          info->control.vif,
+                                          fragment_data, fragment_len, info,
                                           (struct ieee80211_rts *)
                                           (txhdr->rts_frame));
                         mac_ctl |= B43legacy_TX4_MAC_SENDRTS;
@@ -365,12 +365,12 @@ int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
                               u8 *txhdr,
                               const unsigned char *fragment_data,
                               unsigned int fragment_len,
-                              const struct ieee80211_tx_control *txctl,
+                              const struct ieee80211_tx_info *info,
                               u16 cookie)
 {
         return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr,
                            fragment_data, fragment_len,
-                           txctl, cookie);
+                           info, cookie);
 }
 
 static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev,