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net: arp: Send replies with timeout K_NO_WAIT

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This ensures system stays operational in arp-flood situation.

Signed-off-by: Cla Mattia Galliard <cla-mattia.galliard@zuehlke.com>
This commit is contained in:
Cla Mattia Galliard 2025-02-21 10:57:40 +01:00 committed by Carles Cufí
parent 19f192cfb5
commit 353e314fbf
1 changed files with 5 additions and 2 deletions
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7
subsys/net/l2/ethernet/arp.c
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@ -531,7 +531,10 @@ static void arp_gratuitous_send(struct net_if *iface,
NET_DBG("Sending gratuitous ARP pkt %p", pkt);
if (net_if_send_data(iface, pkt) == NET_DROP) {
/* send without timeout, so we do not risk being blocked by tx when
* being flooded
*/
if (net_if_try_send_data(iface, pkt, K_NO_WAIT) == NET_DROP) {
net_pkt_unref(pkt);
}
}
@ -874,7 +877,7 @@ enum net_verdict net_arp_input(struct net_pkt *pkt,
/* Send reply */
reply = arp_prepare_reply(net_pkt_iface(pkt), pkt, dst_hw_addr);
if (reply) {
net_if_queue_tx(net_pkt_iface(reply), reply);
net_if_try_queue_tx(net_pkt_iface(reply), reply, K_NO_WAIT);
} else {
NET_DBG("Cannot send ARP reply");
}