mwifiex: retrieve IEs from cfg80211_beacon_data and send to firmware

This patch adds logic for setting tail beacon IE, probe response IE
and assoc response IE from cfg80211_ap_settings parameter of
start_ap handler into FW.

RSN IE is also retrieved from tail IE buffer and sent to firmware.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 176 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/ie.c b/drivers/net/wireless/mwifiex/ie.c
index 772bf3e57006..ca9ebcf8ab22 100644
--- a/drivers/net/wireless/mwifiex/ie.c
+++ b/drivers/net/wireless/mwifiex/ie.c
@@ -147,3 +147,179 @@ mwifiex_update_autoindex_ies(struct mwifiex_private *priv,
 
 	return 0;
 }
+
+/* Copy individual custom IEs for beacon, probe response and assoc response
+ * and prepare single structure for IE setting.
+ * This function also updates allocated IE indices from driver.
+ */
+static int
+mwifiex_update_uap_custom_ie(struct mwifiex_private *priv,
+			     struct mwifiex_ie *beacon_ie, u16 *beacon_idx,
+			     struct mwifiex_ie *pr_ie, u16 *probe_idx,
+			     struct mwifiex_ie *ar_ie, u16 *assoc_idx)
+{
+	struct mwifiex_ie_list *ap_custom_ie;
+	u8 *pos;
+	u16 len;
+	int ret;
+
+	ap_custom_ie = kzalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
+	if (!ap_custom_ie)
+		return -ENOMEM;
+
+	ap_custom_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
+	pos = (u8 *)ap_custom_ie->ie_list;
+
+	if (beacon_ie) {
+		len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
+		      le16_to_cpu(beacon_ie->ie_length);
+		memcpy(pos, beacon_ie, len);
+		pos += len;
+		le16_add_cpu(&ap_custom_ie->len, len);
+	}
+	if (pr_ie) {
+		len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
+		      le16_to_cpu(pr_ie->ie_length);
+		memcpy(pos, pr_ie, len);
+		pos += len;
+		le16_add_cpu(&ap_custom_ie->len, len);
+	}
+	if (ar_ie) {
+		len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
+		      le16_to_cpu(ar_ie->ie_length);
+		memcpy(pos, ar_ie, len);
+		pos += len;
+		le16_add_cpu(&ap_custom_ie->len, len);
+	}
+
+	ret = mwifiex_update_autoindex_ies(priv, ap_custom_ie);
+
+	pos = (u8 *)(&ap_custom_ie->ie_list[0].ie_index);
+	if (beacon_ie && *beacon_idx == MWIFIEX_AUTO_IDX_MASK) {
+		/* save beacon ie index after auto-indexing */
+		*beacon_idx = le16_to_cpu(ap_custom_ie->ie_list[0].ie_index);
+		len = sizeof(*beacon_ie) - IEEE_MAX_IE_SIZE +
+		      le16_to_cpu(beacon_ie->ie_length);
+		pos += len;
+	}
+	if (pr_ie && le16_to_cpu(pr_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK) {
+		/* save probe resp ie index after auto-indexing */
+		*probe_idx = *((u16 *)pos);
+		len = sizeof(*pr_ie) - IEEE_MAX_IE_SIZE +
+		      le16_to_cpu(pr_ie->ie_length);
+		pos += len;
+	}
+	if (ar_ie && le16_to_cpu(ar_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK)
+		/* save assoc resp ie index after auto-indexing */
+		*assoc_idx = *((u16 *)pos);
+
+	return ret;
+}
+
+/* This function parses different IEs- Tail IEs, beacon IEs, probe response IEs,
+ * association response IEs from cfg80211_ap_settings function and sets these IE
+ * to FW.
+ */
+int mwifiex_set_mgmt_ies(struct mwifiex_private *priv,
+			 struct cfg80211_ap_settings *params)
+{
+	struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL;
+	struct mwifiex_ie *ar_ie = NULL, *rsn_ie = NULL;
+	struct ieee_types_header *ie = NULL;
+	u16 beacon_idx = MWIFIEX_AUTO_IDX_MASK, pr_idx = MWIFIEX_AUTO_IDX_MASK;
+	u16 ar_idx = MWIFIEX_AUTO_IDX_MASK, rsn_idx = MWIFIEX_AUTO_IDX_MASK;
+	u16 mask;
+	int ret = 0;
+
+	if (params->beacon.tail && params->beacon.tail_len) {
+		ie = (void *)cfg80211_find_ie(WLAN_EID_RSN, params->beacon.tail,
+					      params->beacon.tail_len);
+		if (ie) {
+			rsn_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
+			if (!rsn_ie)
+				return -ENOMEM;
+
+			rsn_ie->ie_index = cpu_to_le16(rsn_idx);
+			mask = MGMT_MASK_BEACON | MGMT_MASK_PROBE_RESP |
+			       MGMT_MASK_ASSOC_RESP;
+			rsn_ie->mgmt_subtype_mask = cpu_to_le16(mask);
+			rsn_ie->ie_length = cpu_to_le16(ie->len + 2);
+			memcpy(rsn_ie->ie_buffer, ie, ie->len + 2);
+
+			if (mwifiex_update_uap_custom_ie(priv, rsn_ie, &rsn_idx,
+							 NULL, NULL,
+							 NULL, NULL)) {
+				ret = -1;
+				goto done;
+			}
+
+			priv->rsn_idx = rsn_idx;
+		}
+	}
+
+	if (params->beacon.beacon_ies && params->beacon.beacon_ies_len) {
+		beacon_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
+		if (!beacon_ie) {
+			ret = -ENOMEM;
+			goto done;
+		}
+
+		beacon_ie->ie_index = cpu_to_le16(beacon_idx);
+		beacon_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON);
+		beacon_ie->ie_length =
+				cpu_to_le16(params->beacon.beacon_ies_len);
+		memcpy(beacon_ie->ie_buffer, params->beacon.beacon_ies,
+		       params->beacon.beacon_ies_len);
+	}
+
+	if (params->beacon.proberesp_ies && params->beacon.proberesp_ies_len) {
+		pr_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
+		if (!pr_ie) {
+			ret = -ENOMEM;
+			goto done;
+		}
+
+		pr_ie->ie_index = cpu_to_le16(pr_idx);
+		pr_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_PROBE_RESP);
+		pr_ie->ie_length =
+				cpu_to_le16(params->beacon.proberesp_ies_len);
+		memcpy(pr_ie->ie_buffer, params->beacon.proberesp_ies,
+		       params->beacon.proberesp_ies_len);
+	}
+
+	if (params->beacon.assocresp_ies && params->beacon.assocresp_ies_len) {
+		ar_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
+		if (!ar_ie) {
+			ret = -ENOMEM;
+			goto done;
+		}
+
+		ar_ie->ie_index = cpu_to_le16(ar_idx);
+		mask = MGMT_MASK_ASSOC_RESP | MGMT_MASK_REASSOC_RESP;
+		ar_ie->mgmt_subtype_mask = cpu_to_le16(mask);
+		ar_ie->ie_length =
+				cpu_to_le16(params->beacon.assocresp_ies_len);
+		memcpy(ar_ie->ie_buffer, params->beacon.assocresp_ies,
+		       params->beacon.assocresp_ies_len);
+	}
+
+	if (beacon_ie || pr_ie || ar_ie) {
+		ret = mwifiex_update_uap_custom_ie(priv, beacon_ie,
+						   &beacon_idx, pr_ie,
+						   &pr_idx, ar_ie, &ar_idx);
+		if (ret)
+			goto done;
+	}
+
+	priv->beacon_idx = beacon_idx;
+	priv->proberesp_idx = pr_idx;
+	priv->assocresp_idx = ar_idx;
+
+done:
+	kfree(beacon_ie);
+	kfree(pr_ie);
+	kfree(ar_ie);
+	kfree(rsn_ie);
+
+	return ret;
+}