On 1029T1123, Navdeep Parhar wrote: > On Wed, Oct 29, 2014 at 10:56:04AM +0100, Edward Tomasz Napierała wrote: > > On 1029T0115, Navdeep Parhar wrote: > > > Author: np > > > Date: Wed Oct 29 01:15:48 2014 > > > New Revision: 273806 > > > URL: https://svnweb.freebsd.org/changeset/base/273806 > > > > > > Log: > > > Userspace library for Chelsio's Terminator 5 based iWARP RNICs (pretty > > > much every T5 card that does _not_ have "-SO" in its name is RDMA > > > capable). > > > > Yay! This means we could add iSER without using the ICL_PROXY hack. > > Well, assuming it's possible to "hand off" RDMA connection from userspace > > to the kernel. Is it? > > Yes, this should be doable. The connection is just another TCP endpoint > tracked like all others in the kernel.
:-) > By the way, iSER is an unnecessary layer if you're using a T5 NIC. > It'll work, sure, but you'll run iSER/RDMA/TOE when you could simply run > iSCSI/TOE with full zero copy everywhere. Comes out to the same result > with a much simpler stack. I think iSER makes sense for gear that does > RDMA but not iSCSI natively. True. IMHO the biggest difference is that iWARP is universal, ie. the NIC doesn't need to have any iSCSI-specific functionality. On the other hand, iSER cannot talk to non-iSER, while iSCSI offload in your NICs talks ordinary iSCSI on the wire. _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
