diff options
Diffstat (limited to 'nuttx/net/uip/uip_udpsend.c')
| -rw-r--r-- | nuttx/net/uip/uip_udpsend.c | 70 |
1 files changed, 36 insertions, 34 deletions
diff --git a/nuttx/net/uip/uip_udpsend.c b/nuttx/net/uip/uip_udpsend.c index 9e6a95a38..af02a3069 100644 --- a/nuttx/net/uip/uip_udpsend.c +++ b/nuttx/net/uip/uip_udpsend.c @@ -1,7 +1,7 @@ /**************************************************************************** * net/uip/uip_udpsend.c * - * Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved. + * Copyright (C) 2007-2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <spudmonkey@racsa.co.cr> * * Adapted for NuttX from logic in uIP which also has a BSD-like license: @@ -57,7 +57,7 @@ * Definitions ****************************************************************************/ -#define UDPBUF ((struct uip_udpip_hdr *)&dev->d_buf[UIP_LLH_LEN]) +#define UDPBUF ((struct uip_udpip_hdr *)&dev->d_buf[UIP_LLH_LEN]) /**************************************************************************** * Public Variables @@ -95,6 +95,8 @@ void uip_udpsend(struct uip_driver_s *dev, struct uip_udp_conn *conn) { + struct uip_udpip_hdr *pudpbuf = UDPBUF; + if (dev->d_sndlen > 0) { /* The total lenth to send is the size of the application data plus @@ -109,62 +111,62 @@ void uip_udpsend(struct uip_driver_s *dev, struct uip_udp_conn *conn) #ifdef CONFIG_NET_IPv6 - UDPBUF->vtc = 0x60; - UDPBUF->tcf = 0x00; - UDPBUF->flow = 0x00; - UDPBUF->len[0] = (dev->d_sndlen >> 8); - UDPBUF->len[1] = (dev->d_sndlen & 0xff); - UDPBUF->nexthdr = UIP_PROTO_UDP; - UDPBUF->hoplimit = conn->ttl; + pudpbuf->vtc = 0x60; + pudpbuf->tcf = 0x00; + pudpbuf->flow = 0x00; + pudpbuf->len[0] = (dev->d_sndlen >> 8); + pudpbuf->len[1] = (dev->d_sndlen & 0xff); + pudpbuf->nexthdr = UIP_PROTO_UDP; + pudpbuf->hoplimit = conn->ttl; - uip_ipaddr_copy(UDPBUF->srcipaddr, &dev->d_ipaddr); - uip_ipaddr_copy(UDPBUF->destipaddr, &conn->ripaddr); + uip_ipaddr_copy(pudpbuf->srcipaddr, &dev->d_ipaddr); + uip_ipaddr_copy(pudpbuf->destipaddr, &conn->ripaddr); #else /* CONFIG_NET_IPv6 */ - UDPBUF->vhl = 0x45; - UDPBUF->tos = 0; - UDPBUF->len[0] = (dev->d_len >> 8); - UDPBUF->len[1] = (dev->d_len & 0xff); + pudpbuf->vhl = 0x45; + pudpbuf->tos = 0; + pudpbuf->len[0] = (dev->d_len >> 8); + pudpbuf->len[1] = (dev->d_len & 0xff); ++g_ipid; - UDPBUF->ipid[0] = g_ipid >> 8; - UDPBUF->ipid[1] = g_ipid & 0xff; - UDPBUF->ipoffset[0] = 0; - UDPBUF->ipoffset[1] = 0; - UDPBUF->ttl = conn->ttl; - UDPBUF->proto = UIP_PROTO_UDP; + pudpbuf->ipid[0] = g_ipid >> 8; + pudpbuf->ipid[1] = g_ipid & 0xff; + pudpbuf->ipoffset[0] = 0; + pudpbuf->ipoffset[1] = 0; + pudpbuf->ttl = conn->ttl; + pudpbuf->proto = UIP_PROTO_UDP; - uiphdr_ipaddr_copy(UDPBUF->srcipaddr, &dev->d_ipaddr); - uiphdr_ipaddr_copy(UDPBUF->destipaddr, &conn->ripaddr); + uiphdr_ipaddr_copy(pudpbuf->srcipaddr, &dev->d_ipaddr); + uiphdr_ipaddr_copy(pudpbuf->destipaddr, &conn->ripaddr); /* Calculate IP checksum. */ - UDPBUF->ipchksum = 0; - UDPBUF->ipchksum = ~(uip_ipchksum(dev)); + pudpbuf->ipchksum = 0; + pudpbuf->ipchksum = ~(uip_ipchksum(dev)); #endif /* CONFIG_NET_IPv6 */ /* Initialize the UDP header */ - UDPBUF->srcport = conn->lport; - UDPBUF->destport = conn->rport; - UDPBUF->udplen = HTONS(dev->d_sndlen + UIP_UDPH_LEN); + pudpbuf->srcport = conn->lport; + pudpbuf->destport = conn->rport; + pudpbuf->udplen = HTONS(dev->d_sndlen + UIP_UDPH_LEN); #ifdef CONFIG_NET_UDP_CHECKSUMS /* Calculate UDP checksum. */ - UDPBUF->udpchksum = 0; - UDPBUF->udpchksum = ~(uip_udpchksum(dev)); - if (UDPBUF->udpchksum == 0) + pudpbuf->udpchksum = 0; + pudpbuf->udpchksum = ~(uip_udpchksum(dev)); + if (pudpbuf->udpchksum == 0) { - UDPBUF->udpchksum = 0xffff; + pudpbuf->udpchksum = 0xffff; } #else - UDPBUF->udpchksum = 0; + pudpbuf->udpchksum = 0; #endif nvdbg("Outgoing UDP packet length: %d (%d)\n", - dev->d_len, (UDPBUF->len[0] << 8) | UDPBUF->len[1]); + dev->d_len, (pudpbuf->len[0] << 8) | pudpbuf->len[1]); #ifdef CONFIG_NET_STATISTICS uip_stat.udp.sent++; |