C++ (Cpp) NET_UDP_HDR Examples

Example #1

File: main.c Project: rsalveti/zephyr

static void setup_ipv4_udp(struct net_pkt *pkt,
			   struct in_addr *remote_addr,
			   struct in_addr *local_addr,
			   u16_t remote_port,
			   u16_t local_port)
{
	NET_IPV4_HDR(pkt)->vhl = 0x45;
	NET_IPV4_HDR(pkt)->tos = 0;
	NET_IPV4_HDR(pkt)->len[0] = 0;
	NET_IPV4_HDR(pkt)->len[1] = NET_UDPH_LEN +
		sizeof(struct net_ipv4_hdr) + strlen(payload);

	NET_IPV4_HDR(pkt)->proto = IPPROTO_UDP;

	net_ipaddr_copy(&NET_IPV4_HDR(pkt)->src, remote_addr);
	net_ipaddr_copy(&NET_IPV4_HDR(pkt)->dst, local_addr);

	net_pkt_set_ip_hdr_len(pkt, sizeof(struct net_ipv4_hdr));
	net_pkt_set_ipv6_ext_len(pkt, 0);

	net_buf_add(pkt->frags, net_pkt_ip_hdr_len(pkt) +
				sizeof(struct net_udp_hdr));

	NET_UDP_HDR(pkt)->src_port = htons(remote_port);
	NET_UDP_HDR(pkt)->dst_port = htons(local_port);

	net_buf_add_mem(pkt->frags, payload, strlen(payload));
}

Example #2

File: main.c Project: rsalveti/zephyr

static void setup_ipv6_udp(struct net_pkt *pkt,
			   struct in6_addr *remote_addr,
			   struct in6_addr *local_addr,
			   u16_t remote_port,
			   u16_t local_port)
{
	NET_IPV6_HDR(pkt)->vtc = 0x60;
	NET_IPV6_HDR(pkt)->tcflow = 0;
	NET_IPV6_HDR(pkt)->flow = 0;
	NET_IPV6_HDR(pkt)->len[0] = 0;
	NET_IPV6_HDR(pkt)->len[1] = NET_UDPH_LEN + strlen(payload);

	NET_IPV6_HDR(pkt)->nexthdr = IPPROTO_UDP;
	NET_IPV6_HDR(pkt)->hop_limit = 255;

	net_ipaddr_copy(&NET_IPV6_HDR(pkt)->src, remote_addr);
	net_ipaddr_copy(&NET_IPV6_HDR(pkt)->dst, local_addr);

	net_pkt_set_ip_hdr_len(pkt, sizeof(struct net_ipv6_hdr));
	net_pkt_set_ipv6_ext_len(pkt, 0);

	net_buf_add(pkt->frags, net_pkt_ip_hdr_len(pkt) +
				sizeof(struct net_udp_hdr));

	NET_UDP_HDR(pkt)->src_port = htons(remote_port);
	NET_UDP_HDR(pkt)->dst_port = htons(local_port);

	net_buf_add_mem(pkt->frags, payload, strlen(payload));
}

Example #3

File: ipv4.c Project: bboozzoo/zephyr

int net_ipv4_finalize_raw(struct net_pkt *pkt, u8_t next_header)
{
	/* Set the length of the IPv4 header */
	size_t total_len;

	net_pkt_compact(pkt);

	total_len = net_pkt_get_len(pkt);

	NET_IPV4_HDR(pkt)->len[0] = total_len / 256;
	NET_IPV4_HDR(pkt)->len[1] = total_len - NET_IPV4_HDR(pkt)->len[0] * 256;

	NET_IPV4_HDR(pkt)->chksum = 0;
	NET_IPV4_HDR(pkt)->chksum = ~net_calc_chksum_ipv4(pkt);

#if defined(CONFIG_NET_UDP)
	if (next_header == IPPROTO_UDP) {
		NET_UDP_HDR(pkt)->chksum = 0;
		NET_UDP_HDR(pkt)->chksum = ~net_calc_chksum_udp(pkt);
	}
#endif
#if defined(CONFIG_NET_TCP)
	if (next_header == IPPROTO_TCP) {
		NET_TCP_HDR(pkt)->chksum = 0;
		NET_TCP_HDR(pkt)->chksum = ~net_calc_chksum_tcp(pkt);
	}
#endif

	return 0;
}

Example #4

File: main.c Project: bigdinotech/zephyr

static inline void set_dst_addr(sa_family_t family,
				struct net_pkt *pkt,
				struct sockaddr *dst_addr)
{
	net_ipaddr_copy(&net_sin6(dst_addr)->sin6_addr,
			&NET_IPV6_HDR(pkt)->src);
	net_sin6(dst_addr)->sin6_family = AF_INET6;
	net_sin6(dst_addr)->sin6_port = NET_UDP_HDR(pkt)->src_port;
}

Example #5

File: echo-server.c Project: bigdinotech/zephyr

static inline void set_dst_addr(sa_family_t family,
				struct net_pkt *pkt,
				struct sockaddr *dst_addr)
{
#if defined(CONFIG_NET_IPV6)
	if (family == AF_INET6) {
		net_ipaddr_copy(&net_sin6(dst_addr)->sin6_addr,
				&NET_IPV6_HDR(pkt)->src);
		net_sin6(dst_addr)->sin6_family = AF_INET6;
		net_sin6(dst_addr)->sin6_port = NET_UDP_HDR(pkt)->src_port;
	}
#endif /* CONFIG_NET_IPV6) */

#if defined(CONFIG_NET_IPV4)
	if (family == AF_INET) {
		net_ipaddr_copy(&net_sin(dst_addr)->sin_addr,
				&NET_IPV4_HDR(pkt)->src);
		net_sin(dst_addr)->sin_family = AF_INET;
		net_sin(dst_addr)->sin_port = NET_UDP_HDR(pkt)->src_port;
	}
#endif /* CONFIG_NET_IPV6) */
}

Example #6

File: udp.c Project: bboozzoo/zephyr

static void set_client_address(struct sockaddr *addr, struct net_pkt *rx_pkt)
{
	net_ipaddr_copy(&net_sin6(addr)->sin6_addr, &NET_IPV6_HDR(rx_pkt)->src);
	net_sin6(addr)->sin6_family = AF_INET6;
	net_sin6(addr)->sin6_port = NET_UDP_HDR(rx_pkt)->src_port;
}