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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 The value depends on your network needs. The value
should include both UDP and TCP connections. 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 config NET_MAX_CONTEXTS
int "Number of network contexts to allocate" int "Number of network contexts to allocate"
default 6 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 "connection.h"
#include "net_stats.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 */ /** Is this connection used or not */
#define NET_CONN_IN_USE BIT(0) #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, NET_DBG("[%p] raw match found cb %p ud %p", conn, conn->cb,
conn->user_data); 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) { if (!raw_pkt) {
net_stats_update_per_proto_drop(pkt_iface, proto); net_stats_update_per_proto_drop(pkt_iface, proto);
NET_WARN("pkt cloning failed, pkt %p dropped", pkt); 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, NET_DBG("[%p] mcast match found cb %p ud %p", conn, conn->cb,
conn->user_data); 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) { if (!mcast_pkt) {
k_mutex_unlock(&conn_lock); k_mutex_unlock(&conn_lock);
goto drop; goto drop;