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mac802154: Avoid delivering frames received in a non satisfying filtering mode

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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 <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20221007085310.503366-8-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
This commit is contained in:
Miquel Raynal 2022-10-07 10:53:09 +02:00 committed by Stefan Schmidt
parent a4b5b4c56d
commit 0218277df5
1 changed files with 7 additions and 5 deletions
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12
net/mac802154/rx.c
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@ -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.
*/