net/context: Make recv_cb providing the ip and protocol headers

If status is 0, both ip_hdr and proto_hdr will own a pointer to the
relevant IP and Protocol headers. In order to know which of ipv4/ipv6
and udp/tcp one will need to use respectively net_pkt_family(pkt) and
net_context_get_ip_proto(context).

Having access to those headers directly, many callbacks will not need
to parse the packet again no get the src/dst addresses or the src/dst
ports. This will be change after this commit.

Signed-off-by: Tomasz Bursztyka <[email protected]>

Author: Tomasz Bursztyka

drivers/console/telnet_console.c

@@ -395,6 +395,8 @@ static inline void telnet_handle_input(struct net_pkt *pkt)
 
 static void telnet_recv(struct net_context *client,
 			struct net_pkt *pkt,
+			union net_ip_header *ip_hdr,
+			union net_proto_header *proto_hdr,
 			int status,
 			void *user_data)
 {

drivers/modem/wncm14a2a.c

@@ -777,7 +777,8 @@ static void sockreadrecv_cb_work(struct k_work *work)
 	pkt = sock->recv_pkt;
 	sock->recv_pkt = NULL;
 	if (sock->recv_cb) {
-		sock->recv_cb(sock->context, pkt, 0, sock->recv_user_data);
+		sock->recv_cb(sock->context, pkt, NULL, NULL,
+			      0, sock->recv_user_data);
 	} else {
 		net_pkt_unref(pkt);
 	}

drivers/wifi/eswifi/eswifi_offload.c

@@ -96,7 +96,8 @@ static void eswifi_off_read_work(struct k_work *work)
 		LOG_WRN("Incomplete buffer copy");
 	}
 
-	socket->recv_cb(socket->context, pkt, 0, socket->user_data);
+	socket->recv_cb(socket->context, pkt,
+			NULL, NULL, 0, socket->user_data);
 	k_sem_give(&socket->read_sem);
 	k_yield();
 

drivers/wifi/winc1500/wifi_winc1500.c

@@ -776,6 +776,7 @@ static bool handle_socket_msg_recv(SOCKET sock,
 		if (sd->recv_cb) {
 			sd->recv_cb(sd->context,
 				    sd->rx_pkt,
+				    NULL, NULL,
 				    0,
 				    sd->recv_user_data);
 			}

include/net/net_context.h

@@ -76,13 +76,17 @@ struct net_context;
  * @param pkt Network buffer that is received. If the pkt is not NULL,
  * then the callback will own the buffer and it needs to to unref the pkt
  * as soon as it has finished working with it.  On EOF, pkt will be NULL.
+ * @param ip_hdr a pointer to relevant IP (v4 or v6) header.
+ * @param proto_hdr a pointer to relevant protocol (udp or tcp) header.
  * @param status Value is set to 0 if some data or the connection is
  * at EOF, <0 if there was an error receiving data, in this case the
  * pkt parameter is set to NULL.
  * @param user_data The user data given in net_recv() call.
  */
 typedef void (*net_context_recv_cb_t)(struct net_context *context,
 				      struct net_pkt *pkt,
+				      union net_ip_header *ip_hdr,
+				      union net_proto_header *proto_hdr,
 				      int status,
 				      void *user_data);
 

samples/bluetooth/ipsp/src/main.c

@@ -225,6 +225,8 @@ static inline void set_dst_addr(sa_family_t family,
 
 static void udp_received(struct net_context *context,
 			 struct net_pkt *pkt,
+			 union net_ip_header *ip_hdr,
+			 union net_proto_header *proto_hdr,
 			 int status,
 			 void *user_data)
 {
@@ -268,6 +270,8 @@ static void setup_udp_recv(struct net_context *udp_recv6)
 
 static void tcp_received(struct net_context *context,
 			 struct net_pkt *pkt,
+			 union net_ip_header *ip_hdr,
+			 union net_proto_header *proto_hdr,
 			 int status,
 			 void *user_data)
 {

samples/net/coap_client/src/coap-client.c

@@ -62,6 +62,8 @@ static int dump_payload(const struct coap_packet *response)
 
 static void udp_receive(struct net_context *context,
 			struct net_pkt *pkt,
+			union net_ip_header *ip_hdr,
+			union net_proto_header *proto_hdr,
 			int status,
 			void *user_data)
 {

samples/net/coap_server/src/coap-server.c

@@ -1229,6 +1229,8 @@ static struct coap_resource *find_resouce_by_observer(
 
 static void udp_receive(struct net_context *context,
 			struct net_pkt *pkt,
+			union net_ip_header *ip_hdr,
+			union net_proto_header *proto_hdr,
 			int status,
 			void *user_data)
 {

samples/net/leds_demo/src/leds-demo.c

@@ -458,6 +458,8 @@ static struct coap_resource resources[] = {
 
 static void udp_receive(struct net_context *context,
 			struct net_pkt *pkt,
+			union net_ip_header *ip_hdr,
+			union net_proto_header *proto_hdr,
 			int status,
 			void *user_data)
 {

samples/net/nats/src/nats.c

@@ -536,7 +536,11 @@ int nats_publish(const struct nats *nats,
 	});
 }
 
-static void receive_cb(struct net_context *ctx, struct net_pkt *pkt, int status,
+static void receive_cb(struct net_context *ctx,
+		       struct net_pkt *pkt,
+		       union net_ip_header *ip_hdr,
+		       union net_proto_header *proto_hdr,
+		       int status,
 		       void *user_data)
 {
 	struct nats *nats = user_data;