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authorMiquel Raynal <miquel.raynal@bootlin.com>2023-11-28 12:16:53 +0100
committerMiquel Raynal <miquel.raynal@bootlin.com>2023-12-15 11:14:53 +0100
commit95d92505b6063896d7a1e6fcadd07e8552653cfb (patch)
tree05cfc69c4f913fa589238cba512f4a4227971bba /net/mac802154
parente9dc1bc9b8dc3aa5380678c5a60593fb6abac68f (diff)
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mac802154: Only allow PAN controllers to process association requests
It is not very clear in the specification whether simple coordinators are allowed or not to answer to association requests themselves. As there is no synchronization mechanism, it is probably best to rely on the relay feature of these coordinators and avoid processing them in this case. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20231128111655.507479-4-miquel.raynal@bootlin.com
Diffstat (limited to 'net/mac802154')
-rw-r--r--net/mac802154/scan.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/mac802154/scan.c b/net/mac802154/scan.c
index 5873da634fb4..1c0eeaa76560 100644
--- a/net/mac802154/scan.c
+++ b/net/mac802154/scan.c
@@ -781,6 +781,12 @@ int mac802154_process_association_req(struct ieee802154_sub_if_data *sdata,
unlikely(dest->short_addr != wpan_dev->short_addr))
return -ENODEV;
+ if (wpan_dev->parent) {
+ dev_dbg(&sdata->dev->dev,
+ "Ignoring ASSOC REQ, not the PAN coordinator\n");
+ return -ENODEV;
+ }
+
mutex_lock(&wpan_dev->association_lock);
memcpy(&assoc_req_pl, skb->data, sizeof(assoc_req_pl));