diff options
| author | Sunil Goutham | 2015-08-30 11:29:12 +0200 |
|---|---|---|
| committer | David S. Miller | 2015-08-31 06:54:12 +0200 |
| commit | 38bb5d4f4f988c98035fca003138dd84471432f2 (patch) | |
| tree | 932ce722d8df92be7ab59057407d870019242d32 /drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c | |
| parent | net: thunderx: mailboxes: remove code duplication (diff) | |
| download | kernel-qcow2-linux-38bb5d4f4f988c98035fca003138dd84471432f2.tar.gz kernel-qcow2-linux-38bb5d4f4f988c98035fca003138dd84471432f2.tar.xz kernel-qcow2-linux-38bb5d4f4f988c98035fca003138dd84471432f2.zip | |
net: thunderx: Receive hashing HW offload support
Adding support for receive hashing HW offload by using RSS_ALG
and RSS_TAG fields of CQE_RX descriptor. Also removed dependency
on minimum receive queue count to configure RSS so that hash is
always generated.
This hash is used by RPS logic to distribute flows across multiple
CPUs. Offload can be disabled via ethtool.
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c index a961aa30f536..1eec2cd657ff 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c @@ -525,17 +525,15 @@ static int nicvf_set_rxfh(struct net_device *dev, const u32 *indir, struct nicvf_rss_info *rss = &nic->rss_info; int idx; - if ((nic->qs->rq_cnt <= 1) || (nic->cpi_alg != CPI_ALG_NONE)) { - rss->enable = false; - rss->hash_bits = 0; - return -EIO; - } - - /* We do not allow change in unsupported parameters */ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) return -EOPNOTSUPP; - rss->enable = true; + if (!rss->enable) { + netdev_err(nic->netdev, + "RSS is disabled, cannot change settings\n"); + return -EIO; + } + if (indir) { for (idx = 0; idx < rss->rss_size; idx++) rss->ind_tbl[idx] = indir[idx]; |