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net: if: Fix net_if_send_data for non-l2 iface

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Some services like DHCHPv4 directly send raw packets to the iface.
This causes issue when the iface does not implement l2, e.g.
because it is a socket offload interface. fix that.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
This commit is contained in:
Loic Poulain 2020-04-22 10:53:32 +02:00 • committed by Jukka Rissanen
commit f1a7a53850
1 changed files with 6 additions and 0 deletions
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6
subsys/net/ip/net_if.c
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@ -356,6 +356,12 @@ enum net_verdict net_if_send_data(struct net_if *iface, struct net_pkt *pkt)
goto done;
}
if (IS_ENABLED(CONFIG_NET_OFFLOAD) && !net_if_l2(iface)) {
NET_WARN("no l2 for iface %p, discard pkt", iface);
verdict = NET_DROP;
goto done;
}
/* If the ll address is not set at all, then we must set
* it here.
* Workaround Linux bug, see: