netmap custom RSS and custom packet info
slw at zxy.spb.ru
Mon Jun 29 17:55:23 UTC 2015
On Mon, Jun 29, 2015 at 10:41:39AM -0700, Adrian Chadd wrote:
> PPPoE will not be hashed according to RSS on the 1g/10g (igb, ixgbe)
> intel hardware. you're going to have to figure out some other method
> for traffic redistribution.
I propose ephemeral but permanent NETMAP RX pipe with redistribution
function from user-loadable kernel module.
Hardware RxRing(i) => loadable hash => user-visible RxRing(j).
As I perceive overhead is packet-parsing and hash computation +
swaping of slot indexes (zero-copying between hardware ring and
In other (Tx) direction user-visible direct mapped to hardware ring.
> If it's inside GRE, then it's IPv4/IPv6 and thus yes, you can do
> symmetric hashing. But if it's raw pppoe coming in, you're SoL.
This is will be only hashed tunnel IPs, yes?
Not sessions inside tunnel.
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