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net: dummy: Add support for receiving data

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Add a recv callback to dummy API. After this it is possible to
receive data by a dummy network interface. This is only useful
if one attaches a virtual interface on top of the dummy one.
One such example is the cooked mode capture interface.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This commit is contained in:
Jukka Rissanen 2024-03-24 21:03:28 +02:00 committed by Carles Cufí
parent 33c075d705
commit 9a9f6f3d96
2 changed files with 16 additions and 7 deletions
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6
include/zephyr/net/dummy.h
View file

@ -32,6 +32,12 @@ struct dummy_api {
/** Send a network packet */
int (*send)(const struct device *dev, struct net_pkt *pkt);
/**
* Receive a network packet (only limited use for this, for example
* receiving capturing packets and post processing them).
*/
enum net_verdict (*recv)(struct net_if *iface, struct net_pkt *pkt);
/** Start the device. Called when the bound network interface is brought up. */
int (*start)(const struct device *dev);

17
subsys/net/l2/dummy/dummy.c
View file

@ -17,14 +17,17 @@ LOG_MODULE_REGISTER(net_l2_dummy, LOG_LEVEL_NONE);
static inline enum net_verdict dummy_recv(struct net_if *iface,
struct net_pkt *pkt)
{
net_pkt_lladdr_src(pkt)->addr = NULL;
net_pkt_lladdr_src(pkt)->len = 0U;
net_pkt_lladdr_src(pkt)->type = NET_LINK_DUMMY;
net_pkt_lladdr_dst(pkt)->addr = NULL;
net_pkt_lladdr_dst(pkt)->len = 0U;
net_pkt_lladdr_dst(pkt)->type = NET_LINK_DUMMY;
const struct dummy_api *api = net_if_get_device(iface)->api;
return NET_CONTINUE;
if (api == NULL) {
return NET_DROP;
}
if (api->recv == NULL) {
return NET_CONTINUE;
}
return api->recv(iface, pkt);
}
static inline int dummy_send(struct net_if *iface, struct net_pkt *pkt)