Re: [TCP] IPV6 : Change a divide into a right shift in tcp_v6_send_ack()
From: Ilpo Järvinen <hidden>
Date: 2007-12-21 07:21:10
On Fri, 21 Dec 2007, Eric Dumazet wrote:
Because tot_len is signed in tcp_v6_send_ack(), tot_len/4 forces compiler to emit an integer divide, while we can help it to use a right shift, less expensive.
Can't you just change tot_len to unsigned here? It's just sizeof and some positive constants added... -- i.
Attachments
- tcp_ipv6.patch [text/plain] 415 bytes · preview