package/mac80211/patches/871-brcmsmac-add-support-for-probe-response-template.patch

   1 --- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
   2 +++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
   3 @@ -541,6 +541,15 @@ brcms_ops_bss_info_changed(struct ieee80
   4                 spin_unlock_bh(&wl->lock);
   5         }
   6
   7 +       if (changed & BSS_CHANGED_AP_PROBE_RESP) {
   8 +               struct sk_buff *probe_resp;
   9 +
  10 +               spin_lock_bh(&wl->lock);
  11 +               probe_resp = ieee80211_proberesp_get(hw, vif);
  12 +               brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
  13 +               spin_unlock_bh(&wl->lock);
  14 +       }
  15 +
  16         if (changed & BSS_CHANGED_BEACON_ENABLED) {
  17                 /* Beaconing should be enabled/disabled (beaconing modes) */
  18                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
  19 @@ -1039,6 +1048,8 @@ static int ieee_hw_init(struct ieee80211
  20         hw->channel_change_time = 7 * 1000;
  21         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
  22
  23 +       hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
  24 +
  25         hw->rate_control_algorithm = "minstrel_ht";
  26
  27         hw->sta_data_size = 0;
  28 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
  29 +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
  30 @@ -453,6 +453,8 @@ static void brcms_c_detach_mfree(struct
  31         kfree(wlc->hw);
  32         if (wlc->beacon)
  33                 dev_kfree_skb_any(wlc->beacon);
  34 +       if (wlc->probe_resp)
  35 +               dev_kfree_skb_any(wlc->probe_resp);
  36
  37         /* free the wlc */
  38         kfree(wlc);
  39 @@ -7327,69 +7329,6 @@ brcms_c_mod_prb_rsp_rate_table(struct br
  40         }
  41  }
  42
  43 -/*     Max buffering needed for beacon template/prb resp template is 142 bytes.
  44 - *
  45 - *     PLCP header is 6 bytes.
  46 - *     802.11 A3 header is 24 bytes.
  47 - *     Max beacon frame body template length is 112 bytes.
  48 - *     Max probe resp frame body template length is 110 bytes.
  49 - *
  50 - *      *len on input contains the max length of the packet available.
  51 - *
  52 - *     The *len value is set to the number of bytes in buf used, and starts
  53 - *     with the PLCP and included up to, but not including, the 4 byte FCS.
  54 - */
  55 -static void
  56 -brcms_c_bcn_prb_template(struct brcms_c_info *wlc, u16 type,
  57 -                        u32 bcn_rspec,
  58 -                        struct brcms_bss_cfg *cfg, u16 *buf, int *len)
  59 -{
  60 -       static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255};
  61 -       struct cck_phy_hdr *plcp;
  62 -       struct ieee80211_mgmt *h;
  63 -       int hdr_len, body_len;
  64 -
  65 -       hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN;
  66 -
  67 -       /* calc buffer size provided for frame body */
  68 -       body_len = *len - hdr_len;
  69 -       /* return actual size */
  70 -       *len = hdr_len + body_len;
  71 -
  72 -       /* format PHY and MAC headers */
  73 -       memset(buf, 0, hdr_len);
  74 -
  75 -       plcp = (struct cck_phy_hdr *) buf;
  76 -
  77 -       /*
  78 -        * PLCP for Probe Response frames are filled in from
  79 -        * core's rate table
  80 -        */
  81 -       if (type == IEEE80211_STYPE_BEACON)
  82 -               /* fill in PLCP */
  83 -               brcms_c_compute_plcp(wlc, bcn_rspec,
  84 -                                (DOT11_MAC_HDR_LEN + body_len + FCS_LEN),
  85 -                                (u8 *) plcp);
  86 -
  87 -       /* "Regular" and 16 MBSS but not for 4 MBSS */
  88 -       /* Update the phytxctl for the beacon based on the rspec */
  89 -       brcms_c_beacon_phytxctl_txant_upd(wlc, bcn_rspec);
  90 -
  91 -       h = (struct ieee80211_mgmt *)&plcp[1];
  92 -
  93 -       /* fill in 802.11 header */
  94 -       h->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | type);
  95 -
  96 -       /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */
  97 -       /* A1 filled in by MAC for prb resp, broadcast for bcn */
  98 -       if (type == IEEE80211_STYPE_BEACON)
  99 -               memcpy(&h->da, &ether_bcast, ETH_ALEN);
 100 -       memcpy(&h->sa, &wlc->pub->cur_etheraddr, ETH_ALEN);
 101 -       memcpy(&h->bssid, &cfg->BSSID, ETH_ALEN);
 102 -
 103 -       /* SEQ filled in by MAC */
 104 -}
 105 -
 106  int brcms_c_get_header_len(void)
 107  {
 108         return TXOFF;
 109 @@ -7531,6 +7470,20 @@ void brcms_c_set_new_beacon(struct brcms
 110         brcms_c_update_beacon(wlc);
 111  }
 112
 113 +void brcms_c_set_new_probe_resp(struct brcms_c_info *wlc,
 114 +                               struct sk_buff *probe_resp)
 115 +{
 116 +       if (!probe_resp)
 117 +               return;
 118 +       if (wlc->probe_resp)
 119 +               dev_kfree_skb_any(wlc->probe_resp);
 120 +       wlc->probe_resp = probe_resp;
 121 +
 122 +       /* add PLCP */
 123 +       skb_push(wlc->probe_resp, D11_PHY_HDR_LEN);
 124 +       brcms_c_update_probe_resp(wlc, false);
 125 +}
 126 +
 127  /* Write ssid into shared memory */
 128  static void
 129  brcms_c_shm_ssid_upd(struct brcms_c_info *wlc, struct brcms_bss_cfg *cfg)
 130 @@ -7550,30 +7503,19 @@ brcms_c_shm_ssid_upd(struct brcms_c_info
 131  static void
 132  brcms_c_bss_update_probe_resp(struct brcms_c_info *wlc,
 133                               struct brcms_bss_cfg *cfg,
 134 +                             struct sk_buff *probe_resp,
 135                               bool suspend)
 136  {
 137 -       u16 *prb_resp;
 138 -       int len = BCN_TMPL_LEN;
 139 +       int len;
 140
 141 -       prb_resp = kmalloc(BCN_TMPL_LEN, GFP_ATOMIC);
 142 -       if (!prb_resp)
 143 -               return;
 144 -
 145 -       /*
 146 -        * write the probe response to hardware, or save in
 147 -        * the config structure
 148 -        */
 149 -
 150 -       /* create the probe response template */
 151 -       brcms_c_bcn_prb_template(wlc, IEEE80211_STYPE_PROBE_RESP, 0,
 152 -                                cfg, prb_resp, &len);
 153 +       len = min_t(size_t, probe_resp->len, BCN_TMPL_LEN);
 154
 155         if (suspend)
 156                 brcms_c_suspend_mac_and_wait(wlc);
 157
 158         /* write the probe response into the template region */
 159         brcms_b_write_template_ram(wlc->hw, T_PRS_TPL_BASE,
 160 -                                   (len + 3) & ~3, prb_resp);
 161 +                                   (len + 3) & ~3, probe_resp->data);
 162
 163         /* write the length of the probe response frame (+PLCP/-FCS) */
 164         brcms_b_write_shm(wlc->hw, M_PRB_RESP_FRM_LEN, (u16) len);
 165 @@ -7587,13 +7529,11 @@ brcms_c_bss_update_probe_resp(struct brc
 166          * PLCP header for the call to brcms_c_mod_prb_rsp_rate_table()
 167          * by subtracting the PLCP len and adding the FCS.
 168          */
 169 -       len += (-D11_PHY_HDR_LEN + FCS_LEN);
 170 -       brcms_c_mod_prb_rsp_rate_table(wlc, (u16) len);
 171 +       brcms_c_mod_prb_rsp_rate_table(wlc,
 172 +                                     (u16)len + FCS_LEN - D11_PHY_HDR_LEN);
 173
 174         if (suspend)
 175                 brcms_c_enable_mac(wlc);
 176 -
 177 -       kfree(prb_resp);
 178  }
 179
 180  void brcms_c_update_probe_resp(struct brcms_c_info *wlc, bool suspend)
 181 @@ -7602,8 +7542,12 @@ void brcms_c_update_probe_resp(struct br
 182
 183         /* update AP or IBSS probe responses */
 184         if (wlc->pub->up && (bsscfg->type == BRCMS_TYPE_AP ||
 185 -                            bsscfg->type == BRCMS_TYPE_ADHOC))
 186 -               brcms_c_bss_update_probe_resp(wlc, bsscfg, suspend);
 187 +                            bsscfg->type == BRCMS_TYPE_ADHOC)) {
 188 +               if (!wlc->probe_resp)
 189 +                       return;
 190 +               brcms_c_bss_update_probe_resp(wlc, bsscfg, wlc->probe_resp,
 191 +                                             suspend);
 192 +       }
 193  }
 194
 195  int brcms_b_xmtfifo_sz_get(struct brcms_hardware *wlc_hw, uint fifo,
 196 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.h
 197 +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.h
 198 @@ -567,6 +567,7 @@ struct brcms_c_info {
 199         struct sk_buff *beacon;
 200         u16 beacon_tim_offset;
 201         u16 beacon_dtim_period;
 202 +       struct sk_buff *probe_resp;
 203  };
 204
 205  /* antsel module specific state */
 206 --- a/drivers/net/wireless/brcm80211/brcmsmac/pub.h
 207 +++ b/drivers/net/wireless/brcm80211/brcmsmac/pub.h
 208 @@ -336,6 +336,8 @@ extern void brcms_c_update_beacon(struct
 209  extern void brcms_c_set_new_beacon(struct brcms_c_info *wlc,
 210                                    struct sk_buff *beacon, u16 tim_offset,
 211                                    u16 dtim_period);
 212 +extern void brcms_c_set_new_probe_resp(struct brcms_c_info *wlc,
 213 +                                      struct sk_buff *probe_resp);
 214  extern void brcms_c_set_ssid(struct brcms_c_info *wlc, u8 *ssid,
 215                              size_t ssid_len);
 216