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Commit 5c90067c authored by Johannes Berg's avatar Johannes Berg
Browse files

mac80211: remove IEEE80211_RX_RA_MATCH 



With promisc support gone, only AP and P2P-Device type interfaces
still clear IEEE80211_RX_RA_MATCH. In both cases this isn't really
necessary though, so we can remove that flag and the code.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent df140465

net/mac80211/ieee80211_i.h

+0 −3
Original line number Diff line number Diff line
@@ -181,8 +181,6 @@ typedef unsigned __bitwise__ ieee80211_rx_result; 


/**

 * enum ieee80211_packet_rx_flags - packet RX flags

 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed

 *	(incl. multicast frames)

 * @IEEE80211_RX_FRAGMENTED: fragmented frame

 * @IEEE80211_RX_AMSDU: a-MSDU packet

 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
@@ -192,7 +190,6 @@ typedef unsigned __bitwise__ ieee80211_rx_result; 
 * @rx_flags field of &struct ieee80211_rx_status.

 */

enum ieee80211_packet_rx_flags {

	IEEE80211_RX_RA_MATCH			= BIT(1),

	IEEE80211_RX_FRAGMENTED			= BIT(2),

	IEEE80211_RX_AMSDU			= BIT(3),

	IEEE80211_RX_MALFORMED_ACTION_FRM	= BIT(4),

net/mac80211/rx.c

+5 −39
Original line number Diff line number Diff line
@@ -981,7 +981,6 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx, 
	struct sk_buff *skb = rx->skb;

	struct ieee80211_local *local = rx->local;

	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;

	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);

	struct sta_info *sta = rx->sta;

	struct tid_ampdu_rx *tid_agg_rx;

	u16 sc;
@@ -1016,10 +1015,6 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx, 
	    ack_policy != IEEE80211_QOS_CTL_ACK_POLICY_NORMAL)

		goto dont_reorder;



	/* not actually part of this BA session */

	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))

		goto dont_reorder;



	/* new, potentially un-ordered, ampdu frame - process it */



	/* reset session timer */
@@ -1073,10 +1068,8 @@ ieee80211_rx_h_check_dup(struct ieee80211_rx_data *rx) 
		if (unlikely(ieee80211_has_retry(hdr->frame_control) &&

			     rx->sta->last_seq_ctrl[rx->seqno_idx] ==

			     hdr->seq_ctrl)) {

			if (status->rx_flags & IEEE80211_RX_RA_MATCH) {

			rx->local->dot11FrameDuplicateCount++;

			rx->sta->num_duplicates++;

			}

			return RX_DROP_UNUSABLE;

		} else if (!(status->flag & RX_FLAG_AMSDU_MORE)) {

			rx->sta->last_seq_ctrl[rx->seqno_idx] = hdr->seq_ctrl;
@@ -1267,7 +1260,7 @@ ieee80211_rx_h_uapsd_and_pspoll(struct ieee80211_rx_data *rx) 
	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);

	int tid, ac;



	if (!rx->sta || !(status->rx_flags & IEEE80211_RX_RA_MATCH))

	if (!rx->sta)

		return RX_CONTINUE;



	if (sdata->vif.type != NL80211_IFTYPE_AP &&
@@ -1388,9 +1381,6 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) 
		}

	}



	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))

		return RX_CONTINUE;



	if (rx->sdata->vif.type == NL80211_IFTYPE_STATION)

		ieee80211_sta_rx_notify(rx->sdata, hdr);
@@ -1519,13 +1509,6 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) 
	 * possible.

	 */



	/*

	 * No point in finding a key and decrypting if the frame is neither

	 * addressed to us nor a multicast frame.

	 */

	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))

		return RX_CONTINUE;



	/* start without a key */

	rx->key = NULL;

	fc = hdr->frame_control;
@@ -2056,7 +2039,6 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx) 
	struct sk_buff *skb, *xmit_skb;

	struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;

	struct sta_info *dsta;

	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);



	dev->stats.rx_packets++;

	dev->stats.rx_bytes += rx->skb->len;
@@ -2067,7 +2049,6 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx) 
	if ((sdata->vif.type == NL80211_IFTYPE_AP ||

	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&

	    !(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&

	    (status->rx_flags & IEEE80211_RX_RA_MATCH) &&

	    (sdata->vif.type != NL80211_IFTYPE_AP_VLAN || !sdata->u.vlan.sta)) {

		if (is_multicast_ether_addr(ehdr->h_dest)) {

			/*
@@ -2208,7 +2189,6 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) 
	struct sk_buff *skb = rx->skb, *fwd_skb;

	struct ieee80211_local *local = rx->local;

	struct ieee80211_sub_if_data *sdata = rx->sdata;

	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);

	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;

	u16 q, hdrlen;
@@ -2239,8 +2219,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) 
	    mesh_rmc_check(rx->sdata, hdr->addr3, mesh_hdr))

		return RX_DROP_MONITOR;



	if (!ieee80211_is_data(hdr->frame_control) ||

	    !(status->rx_flags & IEEE80211_RX_RA_MATCH))

	if (!ieee80211_is_data(hdr->frame_control))

		return RX_CONTINUE;



	if (!mesh_hdr->ttl)
@@ -2560,9 +2539,6 @@ ieee80211_rx_h_mgmt_check(struct ieee80211_rx_data *rx) 
		rx->flags |= IEEE80211_RX_BEACON_REPORTED;

	}



	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))

		return RX_DROP_MONITOR;



	if (ieee80211_drop_unencrypted_mgmt(rx))

		return RX_DROP_UNUSABLE;
@@ -2590,9 +2566,6 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) 
	    mgmt->u.action.category != WLAN_CATEGORY_SPECTRUM_MGMT)

		return RX_DROP_UNUSABLE;



	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))

		return RX_DROP_UNUSABLE;



	switch (mgmt->u.action.category) {

	case WLAN_CATEGORY_HT:

		/* reject HT action frames from stations not supporting HT */
@@ -3334,9 +3307,7 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx, 
				return false;

			if (ieee80211_is_public_action(hdr, skb->len))

				return true;

			if (!ieee80211_is_beacon(hdr->frame_control))

				return false;

			status->rx_flags &= ~IEEE80211_RX_RA_MATCH;

			return ieee80211_is_beacon(hdr->frame_control);

		} else if (!ieee80211_has_tods(hdr->frame_control)) {

			/* ignore data frames to TDLS-peers */

			if (ieee80211_is_data(hdr->frame_control))
@@ -3359,9 +3330,6 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx, 
		    !ieee80211_is_probe_resp(hdr->frame_control) &&

		    !ieee80211_is_beacon(hdr->frame_control))

			return false;

		if (!ether_addr_equal(sdata->vif.addr, hdr->addr1) &&

		    !multicast)

			status->rx_flags &= ~IEEE80211_RX_RA_MATCH;

		break;

	default:

		/* should never get here */
@@ -3383,11 +3351,9 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx, 
{

	struct ieee80211_local *local = rx->local;

	struct ieee80211_sub_if_data *sdata = rx->sdata;

	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);

	struct ieee80211_hdr *hdr = (void *)skb->data;



	rx->skb = skb;

	status->rx_flags |= IEEE80211_RX_RA_MATCH;



	if (!prepare_for_handlers(rx, hdr))

		return false;