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octeontx2-pf: Support to change VLAN based RSS hash options via ethtool

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Add support to control rx-flow-hash based on VLAN.
By default VLAN plus 4-tuple based hashing is enabled.
Changes can be done runtime using ethtool

To enable 2-tuple plus VLAN based flow distribution
  # ethtool -N <intf> rx-flow-hash <prot> sdv
To enable 4-tuple plus VLAN based flow distribution
  # ethtool -N <intf> rx-flow-hash <prot> sdfnv

Signed-off-by: George Cherian <george.cherian@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
George Cherian 2020-09-22 18:37:27 +05:30 committed by David S. Miller
parent 8f900363df
commit a55ff8ef5a
2 changed files with 8 additions and 1 deletions
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2
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
View file

@ -355,7 +355,7 @@ int otx2_rss_init(struct otx2_nic *pfvf)
rss->flowkey_cfg = rss->enable ? rss->flowkey_cfg :
NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6 |
NIX_FLOW_KEY_TYPE_TCP | NIX_FLOW_KEY_TYPE_UDP |
NIX_FLOW_KEY_TYPE_SCTP;
NIX_FLOW_KEY_TYPE_SCTP | NIX_FLOW_KEY_TYPE_VLAN;
ret = otx2_set_flowkey_cfg(pfvf);
if (ret)

7
drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
View file

@ -428,6 +428,8 @@ static int otx2_get_rss_hash_opts(struct otx2_nic *pfvf,
/* Mimimum is IPv4 and IPv6, SIP/DIP */
nfc->data = RXH_IP_SRC | RXH_IP_DST;
if (rss->flowkey_cfg & NIX_FLOW_KEY_TYPE_VLAN)
nfc->data |= RXH_VLAN;
switch (nfc->flow_type) {
case TCP_V4_FLOW:
@ -477,6 +479,11 @@ static int otx2_set_rss_hash_opts(struct otx2_nic *pfvf,
if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST))
return -EINVAL;
if (nfc->data & RXH_VLAN)
rss_cfg |= NIX_FLOW_KEY_TYPE_VLAN;
else
rss_cfg &= ~NIX_FLOW_KEY_TYPE_VLAN;
switch (nfc->flow_type) {
case TCP_V4_FLOW:
case TCP_V6_FLOW: