b43: remove wrong probe_resp_plcp write

The tkip hw support uncovered a bug in b43_write_probe_resp_template : it is
writing at the wrong shm offset, it is in the B43_SHM_SH_TKIPTSCTTAK
zone. Remove b43_write_probe_resp_template,  b43_write_probe_resp_plcp
and b43_write_probe_resp_plcp because the probe response offload is
currently not supported by mac80211.

Signed-off-by: Gregor Kowski <gregor.kowski@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 925f346..997dd55 100644 (file)
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -1429,116 +1429,6 @@ static void b43_write_beacon_template(struct b43_wldev *dev,
        b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
 }
 
-static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
-                                     u16 shm_offset, u16 size,
-                                     struct ieee80211_rate *rate)
-{
-       struct b43_plcp_hdr4 plcp;
-       u32 tmp;
-       __le16 dur;
-
-       plcp.data = 0;
-       b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
-       dur = ieee80211_generic_frame_duration(dev->wl->hw,
-                                              dev->wl->vif, size,
-                                              rate);
-       /* Write PLCP in two parts and timing for packet transfer */
-       tmp = le32_to_cpu(plcp.data);
-       b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
-       b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
-       b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
-}
-
-/* Instead of using custom probe response template, this function
- * just patches custom beacon template by:
- * 1) Changing packet type
- * 2) Patching duration field
- * 3) Stripping TIM
- */
-static const u8 *b43_generate_probe_resp(struct b43_wldev *dev,
-                                        u16 *dest_size,
-                                        struct ieee80211_rate *rate)
-{
-       const u8 *src_data;
-       u8 *dest_data;
-       u16 src_size, elem_size, src_pos, dest_pos;
-       __le16 dur;
-       struct ieee80211_hdr *hdr;
-       size_t ie_start;
-
-       src_size = dev->wl->current_beacon->len;
-       src_data = (const u8 *)dev->wl->current_beacon->data;
-
-       /* Get the start offset of the variable IEs in the packet. */
-       ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
-       B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
-
-       if (B43_WARN_ON(src_size < ie_start))
-               return NULL;
-
-       dest_data = kmalloc(src_size, GFP_ATOMIC);
-       if (unlikely(!dest_data))
-               return NULL;
-
-       /* Copy the static data and all Information Elements, except the TIM. */
-       memcpy(dest_data, src_data, ie_start);
-       src_pos = ie_start;
-       dest_pos = ie_start;
-       for ( ; src_pos < src_size - 2; src_pos += elem_size) {
-               elem_size = src_data[src_pos + 1] + 2;
-               if (src_data[src_pos] == 5) {
-                       /* This is the TIM. */
-                       continue;
-               }
-               memcpy(dest_data + dest_pos, src_data + src_pos,
-                      elem_size);
-               dest_pos += elem_size;
-       }
-       *dest_size = dest_pos;
-       hdr = (struct ieee80211_hdr *)dest_data;
-
-       /* Set the frame control. */
-       hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-                                        IEEE80211_STYPE_PROBE_RESP);
-       dur = ieee80211_generic_frame_duration(dev->wl->hw,
-                                              dev->wl->vif, *dest_size,
-                                              rate);
-       hdr->duration_id = dur;
-
-       return dest_data;
-}
-
-static void b43_write_probe_resp_template(struct b43_wldev *dev,
-                                         u16 ram_offset,
-                                         u16 shm_size_offset,
-                                         struct ieee80211_rate *rate)
-{
-       const u8 *probe_resp_data;
-       u16 size;
-
-       size = dev->wl->current_beacon->len;
-       probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
-       if (unlikely(!probe_resp_data))
-               return;
-
-       /* Looks like PLCP headers plus packet timings are stored for
-        * all possible basic rates
-        */
-       /* FIXME this is the wrong offset : it goes in tkip rx phase1 shm */
-#if 0
-       b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
-       b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
-       b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
-       b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
-#endif
-
-       size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
-       b43_write_template_common(dev, probe_resp_data,
-                                 size, ram_offset, shm_size_offset,
-                                 rate->hw_value);
-       kfree(probe_resp_data);
-}
-
 static void b43_upload_beacon0(struct b43_wldev *dev)
 {
        struct b43_wl *wl = dev->wl;
@@ -1546,10 +1436,6 @@ static void b43_upload_beacon0(struct b43_wldev *dev)
        if (wl->beacon0_uploaded)
                return;
        b43_write_beacon_template(dev, 0x68, 0x18);
-       /* FIXME: Probe resp upload doesn't really belong here,
-        *        but we don't use that feature anyway. */
-       b43_write_probe_resp_template(dev, 0x268, 0x4A,
-                                     &__b43_ratetable[3]);
        wl->beacon0_uploaded = 1;
 }