package/kernel/mac80211/patches/863-brcmfmac-set-wiphy-s-addresses-to-provide-valid-MACs.patch

   1 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   2 Date: Thu, 9 Jul 2015 16:53:30 +0200
   3 Subject: [PATCH] brcmfmac: set wiphy's addresses to provide valid MACs
   4 MIME-Version: 1.0
   5 Content-Type: text/plain; charset=UTF-8
   6 Content-Transfer-Encoding: 8bit
   7
   8 Broadcom's firmware requires every BSS to use MAC address with unique
   9 last few bits. The amount of bits may depend on a particular firmware,
  10 it was verified to be 2 for BCM43602 one.
  11 If this condition won't be fulfilled firmware will reject such MAC:
  12 brcmfmac: _brcmf_set_mac_address: Setting cur_etheraddr failed, -52
  13
  14 We don't want to simply set addr_mask as it would also disallow using
  15 locally administrated bit. Instead let's build a list of addresses
  16 manually enabling 0x2 bit for extra interfaces.
  17
  18 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  19 ---
  20
  21 --- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
  22 +++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
  23 @@ -5812,6 +5812,7 @@ static void brcmf_wiphy_wowl_params(struct wiphy *wiphy)
  24
  25  static int brcmf_setup_wiphy(struct wiphy *wiphy, struct brcmf_if *ifp)
  26  {
  27 +       struct brcmf_pub *drvr = ifp->drvr;
  28         struct ieee80211_supported_band *band;
  29         __le32 bandlist[3];
  30         u32 n_bands;
  31 @@ -5825,6 +5826,19 @@ static int brcmf_setup_wiphy(struct wiphy *wiphy, struct brcmf_if *ifp)
  32         if (err)
  33                 return err;
  34
  35 +       for (i = 0; i < wiphy->iface_combinations->max_interfaces &&
  36 +            i < ARRAY_SIZE(drvr->addresses); i++) {
  37 +               u8 *addr = drvr->addresses[i].addr;
  38 +
  39 +               memcpy(addr, drvr->mac, ETH_ALEN);
  40 +               if (i) {
  41 +                       addr[0] |= BIT(1);
  42 +                       addr[ETH_ALEN - 1] ^= i;
  43 +               }
  44 +       }
  45 +       wiphy->addresses = drvr->addresses;
  46 +       wiphy->n_addresses = i;
  47 +
  48         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
  49         wiphy->cipher_suites = __wl_cipher_suites;
  50         wiphy->n_cipher_suites = ARRAY_SIZE(__wl_cipher_suites);
  51 --- a/drivers/net/wireless/brcm80211/brcmfmac/core.h
  52 +++ b/drivers/net/wireless/brcm80211/brcmfmac/core.h
  53 @@ -21,6 +21,7 @@
  54  #ifndef BRCMFMAC_CORE_H
  55  #define BRCMFMAC_CORE_H
  56
  57 +#include <net/cfg80211.h>
  58  #include "fweh.h"
  59
  60  #define TOE_TX_CSUM_OL         0x00000001
  61 @@ -118,6 +119,8 @@ struct brcmf_pub {
  62         /* Multicast data packets sent to dongle */
  63         unsigned long tx_multicast;
  64
  65 +       struct mac_address addresses[BRCMF_MAX_IFS];
  66 +
  67         struct brcmf_if *iflist[BRCMF_MAX_IFS];
  68
  69         struct mutex proto_block;