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Commit 72e5aa8d authored by Avinash Patil's avatar Avinash Patil Committed by John W. Linville
Browse files

mwifiex: support for parsing TDLS discovery frames 



This patch adds support for parsing TDLS discovery
frames. After parsing, we update peer RSSI information.

Signed-off-by: default avatarAvinash Patil <patila@marvell.com>
Signed-off-by: default avatarCathy Luo <cluo@marvell.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9927baa3

drivers/net/wireless/mwifiex/util.c

+38 −0
Original line number Diff line number Diff line
@@ -141,6 +141,38 @@ int mwifiex_get_debug_info(struct mwifiex_private *priv, 
	return 0;

}



static int

mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len,

			  struct rxpd *rx_pd)

{

	u16 stype;

	u8 category, action_code;

	struct ieee80211_hdr *ieee_hdr = (void *)payload;



	stype =  (cpu_to_le16(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE);



	switch (stype) {

	case IEEE80211_STYPE_ACTION:

		category = *(payload + sizeof(struct ieee80211_hdr));

		action_code = *(payload + sizeof(struct ieee80211_hdr) + 1);

		if (category == WLAN_CATEGORY_PUBLIC &&

		    action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {

			dev_dbg(priv->adapter->dev,

				"TDLS discovery response %pM nf=%d, snr=%d\n",

				ieee_hdr->addr2, rx_pd->nf, rx_pd->snr);

			mwifiex_auto_tdls_update_peer_signal(priv,

							     ieee_hdr->addr2,

							     rx_pd->snr,

							     rx_pd->nf);

		}

		break;

	default:

		dev_dbg(priv->adapter->dev,

			"unknown mgmt frame subytpe %#x\n", stype);

	}



	return 0;

}

/*

 * This function processes the received management packet and send it

 * to the kernel.
@@ -151,6 +183,7 @@ mwifiex_process_mgmt_packet(struct mwifiex_private *priv, 
{

	struct rxpd *rx_pd;

	u16 pkt_len;

	struct ieee80211_hdr *ieee_hdr;



	if (!skb)

		return -1;
@@ -162,6 +195,11 @@ mwifiex_process_mgmt_packet(struct mwifiex_private *priv, 


	pkt_len = le16_to_cpu(rx_pd->rx_pkt_length);



	ieee_hdr = (void *)skb->data;

	if (ieee80211_is_mgmt(ieee_hdr->frame_control)) {

		mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr,

					  pkt_len, rx_pd);

	}

	/* Remove address4 */

	memmove(skb->data + sizeof(struct ieee80211_hdr_3addr),

		skb->data + sizeof(struct ieee80211_hdr),