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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-11-27 23:15:39 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-11-27 23:15:39 +0000 |
commit | 7f5b9991bf8580a9c155dfd42423430c11c62fd8 (patch) | |
tree | 3c8ab897b5851ba12934cfca006588767786c474 /nuttx/net | |
parent | 2268aea37d7eca8d6aeeaa6c3f540088329ed3b1 (diff) | |
download | px4-nuttx-7f5b9991bf8580a9c155dfd42423430c11c62fd8.tar.gz px4-nuttx-7f5b9991bf8580a9c155dfd42423430c11c62fd8.tar.bz2 px4-nuttx-7f5b9991bf8580a9c155dfd42423430c11c62fd8.zip |
Fix missing ARP entry problem
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3139 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/net')
-rw-r--r-- | nuttx/net/send.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/nuttx/net/send.c b/nuttx/net/send.c index 480627a14..515c350e4 100644 --- a/nuttx/net/send.c +++ b/nuttx/net/send.c @@ -51,6 +51,10 @@ #include <nuttx/clock.h> #include <net/uip/uip-arch.h> +#ifndef CONFIG_NET_ARP_IPIN +# include <net/uip/uip-arp.h> +#endif + #include "net_internal.h" #include "uip/uip_internal.h" @@ -255,21 +259,37 @@ static uint16_t send_interrupt(struct uip_driver_s *dev, void *pvconn, nllvdbg("SEND: sndseq %08x->%08x\n", conn->sndseq, seqno); uip_tcpsetsequence(conn->sndseq, seqno); - /* Then send that amount of data */ + /* Then set-up to send that amount of data. (this won't actually + * happen until the polling cycle completes). + */ uip_send(dev, &pstate->snd_buffer[pstate->snd_sent], sndlen); - /* And update the amount of data sent (but not necessarily ACKed) */ + /* Check if the destination IP address is in the ARP table. If not, + * then the send won't actually make it out... it will be replaced with + * an ARP request. + * + * NOTE: If we are actually harvesting IP addresses on incomming IP + * packets, then this check should be necessary; the MAC mapping should + * already be in the ARP table. + */ - pstate->snd_sent += sndlen; - nllvdbg("SEND: acked=%d sent=%d buflen=%d\n", - pstate->snd_acked, pstate->snd_sent, pstate->snd_buflen); +#ifndef CONFIG_NET_ARP_IPIN + if (uip_arp_find(conn->ripaddr) != NULL) +#endif + { + /* Update the amount of data sent (but not necessarily ACKed) */ - /* Update the send time */ + pstate->snd_sent += sndlen; + nllvdbg("SEND: acked=%d sent=%d buflen=%d\n", + pstate->snd_acked, pstate->snd_sent, pstate->snd_buflen); + + /* Update the send time */ #if defined(CONFIG_NET_SOCKOPTS) && !defined(CONFIG_DISABLE_CLOCK) - pstate->snd_time = g_system_timer; + pstate->snd_time = g_system_timer; #endif + } } /* All data has been send and we are just waiting for ACK or re-tranmist |