From: Vikas Gupta <vikas.gupta@broadcom.com>
To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
bhargava.marreddy@broadcom.com, rahul-rg.gupta@broadcom.com,
vsrama-krishna.nemani@broadcom.com,
rajashekar.hudumula@broadcom.com, dharmender.garg@broadcom.com,
ajit.khaparde@broadcom.com,
Vikas Gupta <vikas.gupta@broadcom.com>
Subject: [PATCH net-next 05/11] bnge: add RXFH ethtool support
Date: Fri, 14 Aug 2026 06:44:29 +0530 [thread overview]
Message-ID: <20260814011435.194631-6-vikas.gupta@broadcom.com> (raw)
In-Reply-To: <20260814011435.194631-1-vikas.gupta@broadcom.com>
Introduce ethtool RXFH operations including get/set_rxfh for
reading and programming the RSS hash key and indirection table.
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Bhargava Chenna Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Dharmender Garg <dharmender.garg@broadcom.com>
---
drivers/net/ethernet/broadcom/bnge/bnge.h | 1 +
.../net/ethernet/broadcom/bnge/bnge_ethtool.c | 284 ++++++++++++++++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 2 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 4 +-
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 2 +
.../net/ethernet/broadcom/bnge/bnge_vnic.h | 1 +
6 files changed, 292 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h
index d43c67232a86..d058737fe2b0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
@@ -88,6 +88,7 @@ enum {
BNGE_RSS_CAP_AH_V6_RSS_CAP = BIT(5),
BNGE_RSS_CAP_ESP_V4_RSS_CAP = BIT(6),
BNGE_RSS_CAP_ESP_V6_RSS_CAP = BIT(7),
+ BNGE_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP = BIT(8),
};
#define BNGE_MAX_QUEUE 8
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c b/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c
index 2467e44de291..c6f564045647 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c
@@ -10,6 +10,9 @@
#include <linux/ethtool_netlink.h>
#include "bnge.h"
+#include "bnge_netdev.h"
+#include "bnge_vnic.h"
+#include "bnge_resc.h"
#include "bnge_ethtool.h"
#include "bnge_hwrm_lib.h"
@@ -740,6 +743,275 @@ static int bnge_set_pauseparam(struct net_device *dev,
return rc;
}
+static u64 bnge_get_ethtool_ipv4_rss(struct bnge_dev *bd)
+{
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4)
+ return RXH_IP_SRC | RXH_IP_DST;
+ return 0;
+}
+
+static u64 bnge_get_ethtool_ipv6_rss(struct bnge_dev *bd)
+{
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6)
+ return RXH_IP_SRC | RXH_IP_DST;
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL)
+ return RXH_IP_SRC | RXH_IP_DST | RXH_IP6_FL;
+ return 0;
+}
+
+static int bnge_get_rxfh_fields(struct net_device *dev,
+ struct ethtool_rxfh_fields *cmd)
+{
+ struct bnge_net *bn = netdev_priv(dev);
+ struct bnge_dev *bd = bn->bd;
+
+ cmd->data = 0;
+ switch (cmd->flow_type) {
+ case TCP_V4_FLOW:
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4)
+ cmd->data |= RXH_IP_SRC | RXH_IP_DST |
+ RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ cmd->data |= bnge_get_ethtool_ipv4_rss(bd);
+ break;
+ case UDP_V4_FLOW:
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4)
+ cmd->data |= RXH_IP_SRC | RXH_IP_DST |
+ RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ fallthrough;
+ case AH_ESP_V4_FLOW:
+ if (bd->rss_hash_cfg &
+ (VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV4 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV4))
+ cmd->data |= RXH_IP_SRC | RXH_IP_DST |
+ RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ fallthrough;
+ case SCTP_V4_FLOW:
+ case AH_V4_FLOW:
+ case ESP_V4_FLOW:
+ case IPV4_FLOW:
+ cmd->data |= bnge_get_ethtool_ipv4_rss(bd);
+ break;
+ case TCP_V6_FLOW:
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6)
+ cmd->data |= RXH_IP_SRC | RXH_IP_DST |
+ RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ cmd->data |= bnge_get_ethtool_ipv6_rss(bd);
+ break;
+ case UDP_V6_FLOW:
+ if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6)
+ cmd->data |= RXH_IP_SRC | RXH_IP_DST |
+ RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ fallthrough;
+ case AH_ESP_V6_FLOW:
+ if (bd->rss_hash_cfg &
+ (VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV6 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV6))
+ cmd->data |= RXH_IP_SRC | RXH_IP_DST |
+ RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ fallthrough;
+ case SCTP_V6_FLOW:
+ case AH_V6_FLOW:
+ case ESP_V6_FLOW:
+ case IPV6_FLOW:
+ cmd->data |= bnge_get_ethtool_ipv6_rss(bd);
+ break;
+ }
+ return 0;
+}
+
+#define RXH_4TUPLE (RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)
+#define RXH_2TUPLE (RXH_IP_SRC | RXH_IP_DST)
+
+static int bnge_set_rxfh_fields(struct net_device *dev,
+ const struct ethtool_rxfh_fields *cmd,
+ struct netlink_ext_ack *extack)
+{
+ struct bnge_net *bn = netdev_priv(dev);
+ struct bnge_dev *bd = bn->bd;
+ int tuple, rc = 0;
+ u32 rss_hash_cfg;
+
+ rss_hash_cfg = bd->rss_hash_cfg;
+
+ if (cmd->data == RXH_4TUPLE)
+ tuple = 4;
+ 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 &&
+ !(bd->rss_cap & BNGE_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)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4;
+ } else if (cmd->flow_type == UDP_V4_FLOW) {
+ rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4;
+ if (tuple == 4)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4;
+ } else if (cmd->flow_type == TCP_V6_FLOW) {
+ rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6;
+ if (tuple == 4)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6;
+ } else if (cmd->flow_type == UDP_V6_FLOW) {
+ rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6;
+ if (tuple == 4)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6;
+ } else if (cmd->flow_type == AH_ESP_V4_FLOW) {
+ if (tuple == 4 &&
+ (!(bd->rss_cap & BNGE_RSS_CAP_AH_V4_RSS_CAP) ||
+ !(bd->rss_cap & BNGE_RSS_CAP_ESP_V4_RSS_CAP)))
+ return -EINVAL;
+ rss_hash_cfg &= ~(VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV4 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV4);
+ if (tuple == 4)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV4 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV4;
+ } else if (cmd->flow_type == AH_ESP_V6_FLOW) {
+ if (tuple == 4 &&
+ (!(bd->rss_cap & BNGE_RSS_CAP_AH_V6_RSS_CAP) ||
+ !(bd->rss_cap & BNGE_RSS_CAP_ESP_V6_RSS_CAP)))
+ return -EINVAL;
+ rss_hash_cfg &= ~(VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV6 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV6);
+ if (tuple == 4)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV6 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV6;
+ } else if (tuple == 4) {
+ return -EINVAL;
+ }
+
+ switch (cmd->flow_type) {
+ case TCP_V4_FLOW:
+ case UDP_V4_FLOW:
+ case SCTP_V4_FLOW:
+ case AH_ESP_V4_FLOW:
+ case AH_V4_FLOW:
+ case ESP_V4_FLOW:
+ case IPV4_FLOW:
+ if (tuple == 2)
+ rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4;
+ else if (!tuple)
+ rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4;
+ break;
+
+ case TCP_V6_FLOW:
+ case UDP_V6_FLOW:
+ case SCTP_V6_FLOW:
+ case AH_ESP_V6_FLOW:
+ case AH_V6_FLOW:
+ case ESP_V6_FLOW:
+ case IPV6_FLOW:
+ 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;
+ break;
+ }
+
+ if (bd->rss_hash_cfg == rss_hash_cfg)
+ return 0;
+
+ bd->rss_hash_cfg = rss_hash_cfg;
+ if (netif_running(bn->netdev)) {
+ bnge_close_core(bn);
+ rc = bnge_open_core(bn);
+ }
+ return rc;
+}
+
+static u32 bnge_get_rxfh_indir_size_eth(struct net_device *dev)
+{
+ struct bnge_net *bn = netdev_priv(dev);
+ struct bnge_dev *bd = bn->bd;
+
+ return bnge_get_rxfh_indir_size(bd);
+}
+
+static u32 bnge_get_rxfh_key_size(struct net_device *dev)
+{
+ return HW_HASH_KEY_SIZE;
+}
+
+static int bnge_get_rxfh(struct net_device *dev,
+ struct ethtool_rxfh_param *rxfh)
+{
+ struct bnge_net *bn = netdev_priv(dev);
+ struct bnge_rss_ctx *rss_ctx = NULL;
+ struct bnge_dev *bd = bn->bd;
+ struct bnge_vnic_info *vnic;
+ u32 i, tbl_size;
+ u32 *indir_tbl;
+
+ indir_tbl = bd->rss_indir_tbl;
+ rxfh->hfunc = ETH_RSS_HASH_TOP;
+
+ if (!bn->vnic_info)
+ return 0;
+
+ vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ if (rxfh->rss_context) {
+ struct ethtool_rxfh_context *ctx;
+
+ ctx = xa_load(&bn->netdev->ethtool->rss_ctx,
+ rxfh->rss_context);
+ if (!ctx)
+ return -EINVAL;
+ indir_tbl = ethtool_rxfh_context_indir(ctx);
+ rss_ctx = ethtool_rxfh_context_priv(ctx);
+ vnic = &rss_ctx->vnic;
+ }
+
+ if (rxfh->indir && indir_tbl) {
+ tbl_size = bnge_get_rxfh_indir_size(bd);
+ for (i = 0; i < tbl_size; i++)
+ rxfh->indir[i] = indir_tbl[i];
+ }
+
+ if (rxfh->key && vnic->rss_hash_key)
+ memcpy(rxfh->key, vnic->rss_hash_key, HW_HASH_KEY_SIZE);
+
+ return 0;
+}
+
+static int bnge_set_rxfh(struct net_device *dev,
+ struct ethtool_rxfh_param *rxfh,
+ struct netlink_ext_ack *extack)
+{
+ struct bnge_net *bn = netdev_priv(dev);
+ int rc = 0;
+
+ if (rxfh->hfunc && rxfh->hfunc != ETH_RSS_HASH_TOP)
+ return -EOPNOTSUPP;
+
+ bnge_modify_rss(bn, NULL, NULL, rxfh);
+
+ if (netif_running(bn->netdev)) {
+ bnge_close_core(bn);
+ rc = bnge_open_core(bn);
+ }
+ return rc;
+}
+
+static u32 bnge_get_rx_ring_count(struct net_device *dev)
+{
+ struct bnge_net *bn = netdev_priv(dev);
+ struct bnge_dev *bd = bn->bd;
+
+ return bd->rx_nr_rings;
+}
+
static const struct ethtool_ops bnge_ethtool_ops = {
.cap_link_lanes_supported = 1,
.get_link_ksettings = bnge_get_link_ksettings,
@@ -757,6 +1029,18 @@ static const struct ethtool_ops bnge_ethtool_ops = {
.get_eth_ctrl_stats = bnge_get_eth_ctrl_stats,
.get_pause_stats = bnge_get_pause_stats,
.get_rmon_stats = bnge_get_rmon_stats,
+ /* RXFH */
+ .rxfh_per_ctx_key = 1,
+ .rxfh_max_num_contexts = BNGE_MAX_ETH_RSS_CTX + 1,
+ .rxfh_indir_space = BNGE_MAX_RSS_TABLE_ENTRIES,
+ .rxfh_priv_size = sizeof(struct bnge_rss_ctx),
+ .get_rx_ring_count = bnge_get_rx_ring_count,
+ .get_rxfh_indir_size = bnge_get_rxfh_indir_size_eth,
+ .get_rxfh_key_size = bnge_get_rxfh_key_size,
+ .get_rxfh = bnge_get_rxfh,
+ .set_rxfh = bnge_set_rxfh,
+ .get_rxfh_fields = bnge_get_rxfh_fields,
+ .set_rxfh_fields = bnge_set_rxfh_fields,
};
void bnge_set_ethtool_ops(struct net_device *dev)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
index dd48c60aeef4..68a93d9f8d64 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
@@ -676,6 +676,8 @@ int bnge_hwrm_vnic_qcaps(struct bnge_dev *bd)
bd->rss_cap |= BNGE_RSS_CAP_ESP_V4_RSS_CAP;
if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_IPSEC_ESP_SPI_IPV6_CAP)
bd->rss_cap |= BNGE_RSS_CAP_ESP_V6_RSS_CAP;
+ if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_IPV6_FLOW_LABEL_CAP)
+ bd->rss_cap |= BNGE_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP;
}
bnge_hwrm_req_drop(bd, req);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index 0f5e46937828..1a55c2fe4532 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -2723,7 +2723,7 @@ static int bnge_hwrm_if_change(struct bnge_dev *bd, bool up)
return bnge_hwrm_req_send(bd, req);
}
-static int bnge_open_core(struct bnge_net *bn)
+int bnge_open_core(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
int rc;
@@ -2993,7 +2993,7 @@ static void bnge_save_ring_stats(struct bnge_net *bn)
}
}
-static void bnge_close_core(struct bnge_net *bn)
+void bnge_close_core(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index 3c0fea0a7608..d68eaa78d4e0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -579,4 +579,6 @@ int bnge_alloc_rx_netmem(struct bnge_net *bn, struct bnge_rx_ring_info *rxr,
u16 prod, gfp_t gfp);
void __bnge_queue_sp_work(struct bnge_net *bn);
void bnge_copy_hw_masks(u64 *mask_arr, __le64 *hw_mask_arr, int count);
+int bnge_open_core(struct bnge_net *bn);
+void bnge_close_core(struct bnge_net *bn);
#endif /* _BNGE_NETDEV_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h b/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h
index af066d8ff156..b2a1d8332a5f 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h
@@ -15,6 +15,7 @@ struct bnge_l2_filter;
#define BNGE_MAX_RSS_TABLE_ENTRIES \
(BNGE_RSS_TABLE_ENTRIES * BNGE_RSS_TABLE_MAX_TBL)
+#define BNGE_MAX_ETH_RSS_CTX 32
#define BNGE_MAX_CTX_PER_VNIC 8
#define BNGE_MAX_MC_ADDRS 16
--
2.47.1
next prev parent reply other threads:[~2026-08-14 1:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 1:14 [PATCH net-next 00/11] add features to bnge Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 01/11] bnge: update HSI Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 02/11] bnge: restructure VNIC and filter code Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 03/11] bnge: add NTUPLE/ARFS VNIC Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 04/11] bnge: add helper functions for multi RSS contexts Vikas Gupta
2026-08-14 1:14 ` Vikas Gupta [this message]
2026-08-14 1:14 ` [PATCH net-next 06/11] bnge: add ethtool support to manage " Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 07/11] bnge: remove refcount from L2 filter Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 08/11] bnge: add NTUPLE filter infrastructure Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 09/11] bnge: add NTUPLE filter support in ethtool Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 10/11] bnge: add aRFS flow steering ndo support Vikas Gupta
2026-08-14 1:14 ` [PATCH net-next 11/11] bnge: add cpu_rmap support for IRQ affinity Vikas Gupta
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