| /** @file |
| @brief UDP data handler |
| |
| This is not to be included by the application. |
| */ |
| |
| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef __UDP_H |
| #define __UDP_H |
| |
| #include <zephyr/types.h> |
| |
| #include <net/net_core.h> |
| #include <net/net_ip.h> |
| #include <net/net_pkt.h> |
| #include <net/net_context.h> |
| |
| #include "connection.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if defined(CONFIG_NET_UDP) |
| /** |
| * @brief Append UDP packet into net_pkt |
| * |
| * @param pkt Network packet |
| * @param src_port Source port in host byte order. |
| * @param dst_port Destination port in host byte order. |
| * |
| * @return Return network packet that contains the UDP packet. |
| */ |
| static inline struct net_pkt *net_udp_append_raw(struct net_pkt *pkt, |
| u16_t src_port, |
| u16_t dst_port) |
| { |
| NET_UDP_HDR(pkt)->src_port = htons(src_port); |
| NET_UDP_HDR(pkt)->dst_port = htons(dst_port); |
| |
| net_buf_add(pkt->frags, sizeof(struct net_udp_hdr)); |
| |
| NET_UDP_HDR(pkt)->len = htons(net_pkt_get_len(pkt) - |
| net_pkt_ip_hdr_len(pkt)); |
| |
| net_pkt_set_appdata(pkt, net_pkt_udp_data(pkt) + |
| sizeof(struct net_udp_hdr)); |
| |
| return pkt; |
| } |
| |
| /** |
| * @brief Append UDP packet into net_pkt |
| * |
| * @param context Network context for a connection |
| * @param pkt Network packet |
| * @param port Destination port in host byte order. |
| * |
| * @return Return network packet that contains the UDP packet. |
| */ |
| static inline struct net_pkt *net_udp_append(struct net_context *context, |
| struct net_pkt *pkt, |
| u16_t port) |
| { |
| return net_udp_append_raw(pkt, |
| ntohs(net_sin((struct sockaddr *) |
| &context->local)->sin_port), |
| port); |
| } |
| #else |
| #define net_udp_append_raw(pkt, src_port, dst_port) (pkt) |
| #define net_udp_append(context, pkt, port) (pkt) |
| #endif /* CONFIG_NET_UDP */ |
| |
| /** |
| * @brief Register a callback to be called when UDP packet |
| * is received corresponding to received packet. |
| * |
| * @param remote_addr Remote address of the connection end point. |
| * @param local_addr Local address of the connection end point. |
| * @param remote_port Remote port of the connection end point. |
| * @param local_port Local port of the connection end point. |
| * @param cb Callback to be called |
| * @param user_data User data supplied by caller. |
| * @param handle UDP handle that can be used when unregistering |
| * |
| * @return Return 0 if the registration succeed, <0 otherwise. |
| */ |
| static inline int net_udp_register(const struct sockaddr *remote_addr, |
| const struct sockaddr *local_addr, |
| u16_t remote_port, |
| u16_t local_port, |
| net_conn_cb_t cb, |
| void *user_data, |
| struct net_conn_handle **handle) |
| { |
| return net_conn_register(IPPROTO_UDP, remote_addr, local_addr, |
| remote_port, local_port, cb, user_data, |
| handle); |
| } |
| |
| /** |
| * @brief Unregister UDP handler. |
| * |
| * @param handle Handle from registering. |
| * |
| * @return Return 0 if the unregistration succeed, <0 otherwise. |
| */ |
| static inline int net_udp_unregister(struct net_conn_handle *handle) |
| { |
| return net_conn_unregister(handle); |
| } |
| |
| #if defined(CONFIG_NET_UDP) |
| static inline void net_udp_init(void) |
| { |
| return; |
| } |
| #else |
| #define net_udp_init(...) |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* __UDP_H */ |