diff options
Diffstat (limited to 'net/mac80211/main.c')
| -rw-r--r-- | net/mac80211/main.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 80db5ea02052..15f0e960fde8 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -662,13 +662,40 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) if (local->hw.wiphy->max_scan_ie_len) local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; - local->hw.wiphy->cipher_suites = cipher_suites; - local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); - if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) - local->hw.wiphy->n_cipher_suites--; + /* Set up cipher suites unless driver already did */ + if (!local->hw.wiphy->cipher_suites) { + local->hw.wiphy->cipher_suites = cipher_suites; + local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) + local->hw.wiphy->n_cipher_suites--; + } if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { - local->hw.wiphy->cipher_suites += 2; - local->hw.wiphy->n_cipher_suites -= 2; + if (local->hw.wiphy->cipher_suites == cipher_suites) { + local->hw.wiphy->cipher_suites += 2; + local->hw.wiphy->n_cipher_suites -= 2; + } else { + u32 *suites; + int r, w = 0; + + /* Filter out WEP */ + + suites = kmemdup( + local->hw.wiphy->cipher_suites, + sizeof(u32) * local->hw.wiphy->n_cipher_suites, + GFP_KERNEL); + if (!suites) + return -ENOMEM; + for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { + u32 suite = local->hw.wiphy->cipher_suites[r]; + if (suite == WLAN_CIPHER_SUITE_WEP40 || + suite == WLAN_CIPHER_SUITE_WEP104) + continue; + suites[w++] = suite; + } + local->hw.wiphy->cipher_suites = suites; + local->hw.wiphy->n_cipher_suites = w; + local->wiphy_ciphers_allocated = true; + } } result = wiphy_register(local->hw.wiphy); @@ -783,6 +810,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) fail_workqueue: wiphy_unregister(local->hw.wiphy); fail_wiphy_register: + if (local->wiphy_ciphers_allocated) + kfree(local->hw.wiphy->cipher_suites); kfree(local->int_scan_req); return result; } @@ -840,6 +869,9 @@ void ieee80211_free_hw(struct ieee80211_hw *hw) mutex_destroy(&local->iflist_mtx); mutex_destroy(&local->mtx); + if (local->wiphy_ciphers_allocated) + kfree(local->hw.wiphy->cipher_suites); + wiphy_free(local->hw.wiphy); } EXPORT_SYMBOL(ieee80211_free_hw); |