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Correct the MSS calculation

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This commit is contained in:
Gregory Nutt 2015-01-22 12:30:07 -06:00
parent 1c8dae4eee
commit 9f40a13cfa
1 changed files with 2 additions and 2 deletions
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4
include/nuttx/net/netconfig.h
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@ -322,7 +322,7 @@
#define TCP_MAXSYNRTX 5
/* The TCP maximum segment size. This is should not be set to more
* than NET_DEV_MTU(dev) - NET_LL_HDRLEN(dev) - IPv4TCP_HDRLEN.
* than NET_DEV_MTU(dev) - NET_LL_HDRLEN(dev) - IPvN_HDRLEN - TCP_HDRLEN.
*
* In the case where there are multiple network devices with different
* link layer protocols (CONFIG_NET_MULTILINK), each network device
@ -330,7 +330,7 @@
* the minimum MSS for that case.
*/
#define TCP_MSS(d,h) (NET_DEV_MTU(d) - NET_LL_HDRLEN(d) - (h))
#define TCP_MSS(d,h) (NET_DEV_MTU(d) - NET_LL_HDRLEN(d) - TCP_HDRLEN - (h))
/* If Ethernet is supported, then it will have the smaller MSS */