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net: Add CONFIG_NET_CONN_PACKET_CLONE_TIMEOUT

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Add CONFIG_NET_CONN_PACKET_CLONE_TIMEOUT to allow for longer
timeouts. This can be used to prevent dropping packets when
transmitting large amounts of data (with PPP).

Signed-off-by: Markus Lassila <markus.lassila@nordicsemi.no>
This commit is contained in:
Markus Lassila 2025-04-02 15:08:25 +03:00 • committed by Benjamin Cabé
commit 392fda02b3
2 changed files with 9 additions and 5 deletions
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6
subsys/net/ip/Kconfig
View file

@ -662,6 +662,12 @@ config NET_MAX_CONN
The value depends on your network needs. The value
should include both UDP and TCP connections.
config NET_CONN_PACKET_CLONE_TIMEOUT
int "Timeout value in milliseconds for cloning a packet"
default 100
help
Maximum wait time when cloning a packet for a network connection.
config NET_MAX_CONTEXTS
int "Number of network contexts to allocate"
default 6

8
subsys/net/ip/connection.c
View file

@ -33,9 +33,6 @@ LOG_MODULE_REGISTER(net_conn, CONFIG_NET_CONN_LOG_LEVEL);
#include "connection.h"
#include "net_stats.h"
/** How long to wait for when cloning multicast packet */
#define CLONE_TIMEOUT K_MSEC(100)
/** Is this connection used or not */
#define NET_CONN_IN_USE BIT(0)
@ -617,7 +614,7 @@ static enum net_verdict conn_raw_socket(struct net_pkt *pkt,
NET_DBG("[%p] raw match found cb %p ud %p", conn, conn->cb,
conn->user_data);
raw_pkt = net_pkt_clone(pkt, CLONE_TIMEOUT);
raw_pkt = net_pkt_clone(pkt, K_MSEC(CONFIG_NET_CONN_PACKET_CLONE_TIMEOUT));
if (!raw_pkt) {
net_stats_update_per_proto_drop(pkt_iface, proto);
NET_WARN("pkt cloning failed, pkt %p dropped", pkt);
@ -857,7 +854,8 @@ enum net_verdict net_conn_input(struct net_pkt *pkt,
NET_DBG("[%p] mcast match found cb %p ud %p", conn, conn->cb,
conn->user_data);
mcast_pkt = net_pkt_clone(pkt, CLONE_TIMEOUT);
mcast_pkt = net_pkt_clone(
pkt, K_MSEC(CONFIG_NET_CONN_PACKET_CLONE_TIMEOUT));
if (!mcast_pkt) {
k_mutex_unlock(&conn_lock);
goto drop;