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iwlwifi: fix key removal

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When trying to remove a key, we always send key
flags just setting the key type, not including
the multicast flag and the key ID. As a result,
whenever any key was removed, the unicast key 0
would be removed, causing a complete connection
loss after the second rekey (the first doesn't
cause a key removal). Fix the key removal code
to include the key ID and multicast flag, thus
removing the correct key.

Cc: stable@vger.kernel.org
Reported-by: Alexander Schnaidt <alex.schnaidt@googlemail.com>
Tested-by: Alexander Schnaidt <alex.schnaidt@googlemail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-02-17 09:47:14 -08:00 committed by John W. Linville
parent 7be081539e
commit 5dcbf48047
1 changed files with 9 additions and 1 deletions
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10
drivers/net/wireless/iwlwifi/iwl-agn-sta.c
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@ -1187,6 +1187,7 @@ int iwl_remove_dynamic_key(struct iwl_priv *priv,
unsigned long flags;
struct iwl_addsta_cmd sta_cmd;
u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
__le16 key_flags;
/* if station isn't there, neither is the key */
if (sta_id == IWL_INVALID_STATION)
@ -1212,7 +1213,14 @@ int iwl_remove_dynamic_key(struct iwl_priv *priv,
IWL_ERR(priv, "offset %d not used in uCode key table.\n",
keyconf->hw_key_idx);
sta_cmd.key.key_flags = STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC |
STA_KEY_FLG_INVALID;
if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
key_flags |= STA_KEY_MULTICAST_MSK;
sta_cmd.key.key_flags = key_flags;
sta_cmd.key.key_offset = WEP_INVALID_OFFSET;
sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
sta_cmd.mode = STA_CONTROL_MODIFY_MSK;