From 0218277df5a527c9e9474aa0e4e4e2f4bbc6f5cc Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Fri, 7 Oct 2022 10:53:09 +0200 Subject: [PATCH] mac802154: Avoid delivering frames received in a non satisfying filtering mode We must avoid the situation where one interface disables address filtering and AACK on the PHY while another interface expects to run with AACK and address filtering enabled. Just ignore the frames on the concerned interface if this happens. Signed-off-by: Miquel Raynal Acked-by: Alexander Aring Link: https://lore.kernel.org/r/20221007085310.503366-8-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt --- net/mac802154/rx.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c index 80dd52bc6bf13..6640bd2373523 100644 --- a/net/mac802154/rx.c +++ b/net/mac802154/rx.c @@ -209,6 +209,13 @@ __ieee802154_rx_handle_packet(struct ieee802154_local *local, if (!ieee802154_sdata_running(sdata)) continue; + /* Do not deliver packets received on interfaces expecting + * AACK=1 if the address filters where disabled. + */ + if (local->hw.phy->filtering < IEEE802154_FILTERING_4_FRAME_FIELDS && + sdata->required_filtering == IEEE802154_FILTERING_4_FRAME_FIELDS) + continue; + ieee802154_subif_frame(sdata, skb, &hdr); skb = NULL; break; @@ -268,11 +275,6 @@ void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb) ieee802154_monitors_rx(local, skb); - /* TODO: Avoid delivering frames received at the level - * IEEE802154_FILTERING_NONE on interfaces not expecting it because of - * the missing auto ACK handling feature. - */ - /* TODO: Handle upcomming receive path where the PHY is at the * IEEE802154_FILTERING_NONE level during a scan. */ -- 2.30.2