Messages in this thread | | | Subject | Re: zero copy issue while receiving the data (counter part of sen dfil e) | From | Dmitry Yusupov <> | Date | Tue, 21 Dec 2004 11:43:10 -0800 |
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indeed :) another words if you have modern NIC than you get "zero-copy"(except copy_to_user()) for free :)
Regards, Dima
On Tue, 2004-12-21 at 14:30 -0500, Jeff Garzik wrote: > Dmitry Yusupov wrote: > > Rajat, > > > > small correction, if NIC supports DMA operation on receive, than no > > extra copy required. Therefore sock_recvmsg() and tcp_read_sock > > large correction: if NIC supports _checksum_ on receive, then no extra > copy is required. > > Jeff >
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