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eth: bnxt: support RSS on IPv6 Flow Label

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It appears that the bnxt FW API has the relevant bit for Flow Label
hashing. Plumb in the support. Obey the capability bit.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250811234212.580748-4-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jakub Kicinski 2025-08-11 16:42:11 -07:00 committed by Paolo Abeni
parent 0afbfdc0f6
commit 46c0faa463
3 changed files with 19 additions and 4 deletions
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2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -6957,6 +6957,8 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
bp->rss_cap |= BNXT_RSS_CAP_ESP_V4_RSS_CAP;
if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_IPSEC_ESP_SPI_IPV6_CAP)
bp->rss_cap |= BNXT_RSS_CAP_ESP_V6_RSS_CAP;
if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_IPV6_FLOW_LABEL_CAP)
bp->rss_cap |= BNXT_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP;
if (flags & VNIC_QCAPS_RESP_FLAGS_RE_FLUSH_CAP)
bp->fw_cap |= BNXT_FW_CAP_VNIC_RE_FLUSH;
}

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -2407,6 +2407,7 @@ struct bnxt {
#define BNXT_RSS_CAP_ESP_V4_RSS_CAP BIT(6)
#define BNXT_RSS_CAP_ESP_V6_RSS_CAP BIT(7)
#define BNXT_RSS_CAP_MULTI_RSS_CTX BIT(8)
#define BNXT_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP BIT(9)
u8 rss_hash_key[HW_HASH_KEY_SIZE];
u8 rss_hash_key_valid:1;

20
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -1584,6 +1584,8 @@ static u64 get_ethtool_ipv6_rss(struct bnxt *bp)
{
if (bp->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6)
return RXH_IP_SRC | RXH_IP_DST;
if (bp->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL)
return RXH_IP_SRC | RXH_IP_DST | RXH_IP6_FL;
return 0;
}
@ -1662,13 +1664,18 @@ static int bnxt_set_rxfh_fields(struct net_device *dev,
if (cmd->data == RXH_4TUPLE)
tuple = 4;
else if (cmd->data == RXH_2TUPLE)
else if (cmd->data == RXH_2TUPLE ||
cmd->data == (RXH_2TUPLE | RXH_IP6_FL))
tuple = 2;
else if (!cmd->data)
tuple = 0;
else
return -EINVAL;
if (cmd->data & RXH_IP6_FL &&
!(bp->rss_cap & BNXT_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP))
return -EINVAL;
if (cmd->flow_type == TCP_V4_FLOW) {
rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4;
if (tuple == 4)
@ -1732,10 +1739,15 @@ static int bnxt_set_rxfh_fields(struct net_device *dev,
case AH_V6_FLOW:
case ESP_V6_FLOW:
case IPV6_FLOW:
if (tuple == 2)
rss_hash_cfg &= ~(VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6 |
VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL);
if (!tuple)
break;
if (cmd->data & RXH_IP6_FL)
rss_hash_cfg |=
VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL;
else if (tuple == 2)
rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6;
else if (!tuple)
rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6;
break;
}