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| author | Michael Brown | 2013-09-04 18:37:34 +0200 |
|---|---|---|
| committer | Michael Brown | 2013-09-04 18:48:58 +0200 |
| commit | 8dd180f165eb8cd0a8475c0fd19bd6dbf17f95d8 (patch) | |
| tree | 5de3605c195c4bf5e4df00c14bf6ad0d3aaa23c0 /src/tests | |
| parent | [ipv6] Fix uninitialised-variable warning (diff) | |
| download | ipxe-8dd180f165eb8cd0a8475c0fd19bd6dbf17f95d8.tar.gz ipxe-8dd180f165eb8cd0a8475c0fd19bd6dbf17f95d8.tar.xz ipxe-8dd180f165eb8cd0a8475c0fd19bd6dbf17f95d8.zip | |
[tcp] Reduce path MTU to 1280 bytes
The path MTU is currently hardcoded to 1460 bytes, which fails to
allow space for TCP options. Sending a maximum-sized datagram (which
is viable when using HTTP POST) will therefore fail since the Ethernet
MTU will be exceeded.
Reduce the hardcoded path MTU to produce a maximum datagram of 1280
bytes, which is the size required of data link layers by IPv6. It is
a reasonable assumption that all intermediary data link layers will be
able to convey this packet without fragmentation, even for IPv4.
Note that this reduction has a minimal impact upon download
throughput, since it affects only the transmit data path.
Originally-fixed-by: Suresh Sundriyal <ssundriy@vmware.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/tests')
0 files changed, 0 insertions, 0 deletions