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enic: set UDP rss flag

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New hardware needs UDP flag set to enable UDP L4 rss hash. Add ethtool
get option to display supported rss flow hash.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Govindarajulu Varadarajan 2018-03-01 11:07:22 -08:00 committed by David S. Miller
parent 7e24c64253
commit 48398b6e70
5 changed files with 58 additions and 1 deletions
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36
drivers/net/ethernet/cisco/enic/enic_ethtool.c
View File

@ -474,6 +474,39 @@ static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
return 0;
}
static int enic_get_rx_flow_hash(struct enic *enic, struct ethtool_rxnfc *cmd)
{
cmd->data = 0;
switch (cmd->flow_type) {
case TCP_V6_FLOW:
case TCP_V4_FLOW:
cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
/* Fall through */
case UDP_V6_FLOW:
case UDP_V4_FLOW:
if (vnic_dev_capable_udp_rss(enic->vdev))
cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
/* Fall through */
case SCTP_V4_FLOW:
case AH_ESP_V4_FLOW:
case AH_V4_FLOW:
case ESP_V4_FLOW:
case SCTP_V6_FLOW:
case AH_ESP_V6_FLOW:
case AH_V6_FLOW:
case ESP_V6_FLOW:
case IPV4_FLOW:
case IPV6_FLOW:
cmd->data |= RXH_IP_SRC | RXH_IP_DST;
break;
default:
return -EINVAL;
}
return 0;
}
static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
@ -500,6 +533,9 @@ static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
ret = enic_grxclsrule(enic, cmd);
spin_unlock_bh(&enic->rfs_h.lock);
break;
case ETHTOOL_GRXFH:
ret = enic_get_rx_flow_hash(enic, cmd);
break;
default:
ret = -EOPNOTSUPP;
break;

4
drivers/net/ethernet/cisco/enic/enic_main.c
View File

@ -2316,7 +2316,7 @@ static int enic_set_rss_nic_cfg(struct enic *enic)
{
struct device *dev = enic_get_dev(enic);
const u8 rss_default_cpu = 0;
const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
NIC_CFG_RSS_HASH_TYPE_IPV6 |
NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
@ -2324,6 +2324,8 @@ static int enic_set_rss_nic_cfg(struct enic *enic)
const u8 rss_base_cpu = 0;
u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
if (vnic_dev_capable_udp_rss(enic->vdev))
rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_UDP;
if (rss_enable) {
if (!enic_set_rsskey(enic)) {
if (enic_set_rsscpu(enic, rss_hash_bits)) {

17
drivers/net/ethernet/cisco/enic/vnic_dev.c
View File

@ -1281,3 +1281,20 @@ int vnic_dev_get_supported_feature_ver(struct vnic_dev *vdev, u8 feature,
return ret;
}
bool vnic_dev_capable_udp_rss(struct vnic_dev *vdev)
{
u64 a0 = CMD_NIC_CFG, a1 = 0;
u64 rss_hash_type;
int wait = 1000;
int err;
err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
if (err || !a0)
return 0;
rss_hash_type = (a1 >> NIC_CFG_RSS_HASH_TYPE_SHIFT) &
NIC_CFG_RSS_HASH_TYPE_MASK_FIELD;
return (rss_hash_type & NIC_CFG_RSS_HASH_TYPE_UDP);
}

1
drivers/net/ethernet/cisco/enic/vnic_dev.h
View File

@ -184,5 +184,6 @@ int vnic_dev_overlay_offload_cfg(struct vnic_dev *vdev, u8 overlay,
u16 vxlan_udp_port_number);
int vnic_dev_get_supported_feature_ver(struct vnic_dev *vdev, u8 feature,
u64 *supported_versions, u64 *a1);
bool vnic_dev_capable_udp_rss(struct vnic_dev *vdev);
#endif /* _VNIC_DEV_H_ */

1
drivers/net/ethernet/cisco/enic/vnic_nic.h
View File

@ -47,6 +47,7 @@
#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 (1 << 4)
#define NIC_CFG_RSS_HASH_TYPE_IPV6_EX (1 << 5)
#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX (1 << 6)
#define NIC_CFG_RSS_HASH_TYPE_UDP (1 << 7)
static inline void vnic_set_nic_cfg(u32 *nic_cfg,
u8 rss_default_cpu, u8 rss_hash_type,