lwIP - A Lightweight TCP/IP stack - Patches: patch #7837, Default TCP_MSS to 1220 if...
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patch #7837: Default TCP_MSS to 1220 if LWIP_IPV6 support is enabled
Submitter: | Sylvain Rochet <gradator> | ||
Submitted: | Sun 26 Aug 2012 09:04:54 PM UTC | ||
Category: | None | Priority: | 3 - Low |
Status: | Wont Do | Privacy: | Public |
Assigned to: | None | Open/Closed: | Closed |
Planned Release: | None |
Tue 28 Aug 2012 08:01:35 PM UTC, comment #3: |
Ivan Delamer <idelamer> |
Tue 28 Aug 2012 07:55:19 PM UTC, comment #2: I don't know about this. I don't like that it changes IPv4 behaviour only because IPv6 is enabled.
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Simon Goldschmidt <goldsimon> |
Tue 28 Aug 2012 07:30:00 PM UTC, comment #1: This is an interesting patch. It's true that for IPv6 there should ideally be a minimum MSS of 1220. In general, this will be a bit larger (e.g. for Ethernet it will be around 1400). Personally I set this value in lwipopts.h to match the smallest netif MTU I'll be using.
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Ivan Delamer <idelamer> |
Sun 26 Aug 2012 09:04:54 PM UTC, original submission:
Tiny patch to set TCP_MSS to 1220 if LWIP_IPV6 support is enabled.
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Sylvain Rochet <gradator> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 3 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2012-10-12 | gradator | Status | None | Wont Do | |
Open/Closed | Open | Closed | |||
2012-08-26 | gradator | Attached File | - | Added 0001-Default-TCP_MSS-to-1220-if-LWIP_IPV6-support-is-enab.patch, #26429 |
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You are right Simon, the relationship between MSS and MTU is performance oriented, not memory oriented. I would leave default as is leave it to the user to change in lwipopts.h if performance is desired.