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[tcpip] Allow for architecture-specific TCP/IP checksum routines

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Calculating the TCP/IP checksum on received packets accounts for a
substantial fraction of the response latency.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2012-06-27 12:02:58 +01:00
parent 6a4ff519c8
commit 1d77d03216
3 changed files with 24 additions and 4 deletions
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4
src/net/tcpip.c
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@@ -97,8 +97,8 @@ int tcpip_tx ( struct io_buffer *iobuf, struct tcpip_protocol *tcpip_protocol,
* or both. Deciding which to swap is left as an exercise for the
* interested reader.
*/
uint16_t tcpip_continue_chksum ( uint16_t partial, const void *data,
size_t len ) {
uint16_t generic_tcpip_continue_chksum ( uint16_t partial,
const void *data, size_t len ) {
unsigned int cksum = ( ( ~partial ) & 0xffff );
unsigned int value;
unsigned int i;