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net: core: Queue loopback packets instead of processing directly

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Instead of processing loopback packets from the TX thread directly,
queue them for further processing by RX thread (if possible), just as
regular packets. It's now possible as the information regarding the
packet is a loopback one or not is stored directly in the net_pkt
structure.

This allows to avoid unexpected stack consumption increases if packets
are sent for loopback destinations.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit is contained in:
Robert Lubos
2026-01-14 15:57:16 +01:00
committed by Henrik Brix Andersen
parent e0d6d425bd
commit 602b91039a
1 changed files with 3 additions and 1 deletions
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4
subsys/net/ip/net_core.c
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@@ -365,6 +365,8 @@ static inline bool process_multicast(struct net_pkt *pkt)
}
#endif
static void net_queue_rx(struct net_if *iface, struct net_pkt *pkt);
int net_try_send_data(struct net_pkt *pkt, k_timeout_t timeout)
{
struct net_if *iface;
@@ -413,7 +415,7 @@ int net_try_send_data(struct net_pkt *pkt, k_timeout_t timeout)
NET_DBG("Loopback pkt %p back to us", pkt);
net_pkt_set_loopback(pkt, true);
net_pkt_set_l2_processed(pkt, true);
processing_data(pkt);
net_queue_rx(net_pkt_iface(pkt), pkt);
ret = 0;
goto err;
}