Re: zero copy issue while receiving the data (counter part of sendfil e)

From: Jeff Garzik
Date: Tue Dec 21 2004 - 14:33:01 EST


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


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/