On Fri, 31 Oct 2014 22:44:11 +0530
Sunil Kovvuri [off-list ref] wrote:

On Fri, Oct 31, 2014 at 8:24 AM, Stephen Hemminger
[off-list ref] wrote:

quoted

On Thu, 30 Oct 2014 17:54:34 +0100
Robert Richter [off-list ref] wrote:

quoted

+#ifdef       VNIC_RSS_SUPPORT
+static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
+module_param(rss_config, int, S_IRUGO);
+MODULE_PARM_DESC(rss_config,
+              "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
+#endif

This should managed  be via ethtool ETHTOOL_GRXFH rather than a module parameter.

Thanks, i will add setting hash options via ETHTOOL_SRXFH as well.
The idea here is to have a choice of hash while module load (through
module params) and if it needs to be changed runtime then
via Ethtool.

Sunil.

Network developers do not like vendor unique module parameters.
Anything device specific doesn't work in a generic distro environment.