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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-06-06 15:06:08 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-06-06 15:06:08 +0000 |
| commit | b47a9d79bb418b3009489b28ebfa0d3d579ceb0a (patch) | |
| tree | 8d3abea4c75673c0780e3b1c8d8d5a623b75f3a5 /nuttx/include | |
| parent | a5955f1c84d42d78af27a298f3cdb54e9cd9bff0 (diff) | |
| download | px4-nuttx-b47a9d79bb418b3009489b28ebfa0d3d579ceb0a.tar.gz px4-nuttx-b47a9d79bb418b3009489b28ebfa0d3d579ceb0a.tar.bz2 px4-nuttx-b47a9d79bb418b3009489b28ebfa0d3d579ceb0a.zip | |
Fix minimum MTU... must be at lest 576
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3674 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/include')
| -rw-r--r-- | nuttx/include/net/uip/uip-arch.h | 2 | ||||
| -rw-r--r-- | nuttx/include/net/uip/uipopt.h | 12 |
2 files changed, 13 insertions, 1 deletions
diff --git a/nuttx/include/net/uip/uip-arch.h b/nuttx/include/net/uip/uip-arch.h index 2cbe7239c..3cb2904ea 100644 --- a/nuttx/include/net/uip/uip-arch.h +++ b/nuttx/include/net/uip/uip-arch.h @@ -117,7 +117,7 @@ struct uip_driver_s #ifdef CONFIG_NET_MULTIBUFFER uint8_t *d_buf; #else - uint8_t d_buf[CONFIG_NET_BUFSIZE + 2]; + uint8_t d_buf[CONFIG_NET_BUFSIZE + CONFIG_NET_GUARDSIZE]; #endif /* d_appdata points to the location where application data can be read from diff --git a/nuttx/include/net/uip/uipopt.h b/nuttx/include/net/uip/uipopt.h index f6aff58bd..a0ba62ee1 100644 --- a/nuttx/include/net/uip/uipopt.h +++ b/nuttx/include/net/uip/uipopt.h @@ -134,6 +134,18 @@ #define UIP_REASS_MAXAGE (20*10) /* 20 seconds */ +/* Network drivers often receive packets with garbage at the end + * and are longer than the size of packet in the TCP header. The + * following "fudge" factor increases the size of the I/O buffering + * by a small amount to allocate slightly oversize packets. After + * receipt, the packet size will be chopped down to the size indicated + * in the TCP header. + */ + +#ifndef CONFIG_NET_GUARDSIZE +# define CONFIG_NET_GUARDSIZE 2 +#endif + /* ICMP configuration options */ #if !defined(CONFIG_NET_ICMP) || defined(CONFIG_DISABLE_CLOCK) |