Quoting r. David S. Miller <[EMAIL PROTECTED]>: > The path an SKB can take is opaque and unknown until the very last > moment it is actually given to the device transmit function.
Why, I was proposing looking at dst cache. If that's NULL, well, we won't stretch ACKs. Worst case we apply the wrong optimization. Right? > People need to get the "special case this topology" ideas out of their > heads. :-) Okay, I get that. What I'd like to clarify, however: rfc2581 explicitly states that in some cases it might be OK to generate ACKs less frequently than every second full-sized segment. Given Matt's measurements, TCP on top of IP over InfiniBand on Linux seems to hit one of these cases. Do you agree to that? -- Michael S. Tsirkin Staff Engineer, Mellanox Technologies - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
