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Subject[PATCH net-next 4/7] vmxnet3: add support for ESP IPv6 RSS
Date
Vmxnet3 version 4 added support for ESP RSS. However, only IPv4 was
supported. With vmxnet3 version 6, this patch enables RSS for ESP
IPv6 packets as well.

Signed-off-by: Ronak Doshi <doshir@vmware.com>
---
drivers/net/vmxnet3/vmxnet3_ethtool.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
index efb59f13227e..43122893e13c 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -769,6 +769,10 @@ vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter *adapter,
case AH_ESP_V6_FLOW:
case AH_V6_FLOW:
case ESP_V6_FLOW:
+ if (VMXNET3_VERSION_GE_6(adapter) &&
+ (rss_fields & VMXNET3_RSS_FIELDS_ESPIP6))
+ info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ fallthrough;
case SCTP_V6_FLOW:
case IPV6_FLOW:
info->data |= RXH_IP_SRC | RXH_IP_DST;
@@ -853,6 +857,22 @@ vmxnet3_set_rss_hash_opt(struct net_device *netdev,
case ESP_V6_FLOW:
case AH_V6_FLOW:
case AH_ESP_V6_FLOW:
+ if (!VMXNET3_VERSION_GE_6(adapter))
+ return -EOPNOTSUPP;
+ if (!(nfc->data & RXH_IP_SRC) ||
+ !(nfc->data & RXH_IP_DST))
+ return -EINVAL;
+ switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
+ case 0:
+ rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP6;
+ break;
+ case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
+ rss_fields |= VMXNET3_RSS_FIELDS_ESPIP6;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
case SCTP_V4_FLOW:
case SCTP_V6_FLOW:
if (!(nfc->data & RXH_IP_SRC) ||
--
2.11.0
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