net: l2: ieee802154: set ll protocol in pkt

The IEEE 802.15.4 L2 now sets the ll protocol in the packet to a
specific value. This corresponds to the respective solution in Linux and
is required to validate access to IEEE 802.15.4 specific attributes of
the packet.

Later change sets will rely on this value to ensure that IEEE 802.15.4
specific package content can only be accessed on IEEE 802.15.4 packages.

Signed-off-by: Florian Grandel <[email protected]>

Author: Florian Grandel

subsys/net/l2/ieee802154/ieee802154.c

@@ -15,6 +15,7 @@ LOG_MODULE_REGISTER(net_ieee802154, CONFIG_NET_L2_IEEE802154_LOG_LEVEL);
 #include <errno.h>
 
 #include <zephyr/net/capture.h>
+#include <zephyr/net/ethernet.h>
 #include <zephyr/net/net_core.h>
 #include <zephyr/net/net_if.h>
 #include <zephyr/net/net_l2.h>
@@ -237,6 +238,8 @@ static enum net_verdict ieee802154_recv(struct net_if *iface, struct net_pkt *pk
 
 	ieee802154_acknowledge(iface, &mpdu);
 
+	net_pkt_set_ll_proto_type(pkt, ETH_P_IEEE802154);
+
 	set_pkt_ll_addr(net_pkt_lladdr_src(pkt), mpdu.mhr.fs->fc.pan_id_comp,
 			mpdu.mhr.fs->fc.src_addr_mode, mpdu.mhr.src_addr);