From: Eliad Peller <eliad@wizery.com>
Date: Tue, 14 Jan 2014 10:35:49 +0000 (+0200)
Subject: iwlwifi: mvm: add predefined broadcast filter configuration
X-Git-Tag: v3.15-rc1~113^2~289^2^2~102^2~45
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=777369237b1dfdd9bc11b855d8f08fe724b60c35;p=linux.git

iwlwifi: mvm: add predefined broadcast filter configuration

Configure arp request broadcast filter if this
option is enabled, in order to allow only arp
request broadcasts to pass-in.

(A following patch will make this filter even narrower
by limiting the arp request to our own ip)

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
---

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 08b8051e56f8..6f9640b68771 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -128,6 +128,28 @@ static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 };
 #endif
 
+#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
+static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
+	{
+		/* arp */
+		.discard = 0,
+		.frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
+		.attrs = {
+			{
+				/* frame type - arp, hw type - ethernet */
+				.offset_type =
+					BCAST_FILTER_OFFSET_PAYLOAD_START,
+				.offset = sizeof(rfc1042_header),
+				.val = cpu_to_be32(0x08060001),
+				.mask = cpu_to_be32(0xffffffff),
+			},
+		},
+	},
+	/* last filter must be empty */
+	{},
+};
+#endif
+
 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 {
 	int i;
@@ -292,6 +314,11 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	}
 #endif
 
+#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
+	/* assign default bcast filtering configuration */
+	mvm->bcast_filters = iwl_mvm_default_bcast_filters;
+#endif
+
 	ret = iwl_mvm_leds_init(mvm);
 	if (ret)
 		return ret;