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Message-Id: <20241022162359.2713094-5-ap420073@gmail.com>
Date: Tue, 22 Oct 2024 16:23:55 +0000
From: Taehee Yoo <ap420073@...il.com>
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Subject: [PATCH net-next v4 4/8] bnxt_en: add support for header-data-split-thresh ethtool command
The bnxt_en driver has configured the hds_threshold value automatically
when TPA is enabled based on the rx-copybreak default value.
Now the header-data-split-thresh ethtool command is added, so it adds an
implementation of header-data-split-thresh option.
Configuration of the header-data-split-thresh is allowed only when
the header-data-split is enabled. The default value of
header-data-split-thresh is 256, which is the default value of
rx-copybreak, which used to be the hds_thresh value.
# Example:
# ethtool -G enp14s0f0np0 tcp-data-split on header-data-split-thresh 256
# ethtool -g enp14s0f0np0
Ring parameters for enp14s0f0np0:
Pre-set maximums:
...
Header data split thresh: 256
Current hardware settings:
...
TCP data split: on
Header data split thresh: 256
Tested-by: Stanislav Fomichev <sdf@...ichev.me>
Signed-off-by: Taehee Yoo <ap420073@...il.com>
---
v4:
- Reduce hole in struct bnxt.
- Add ETHTOOL_RING_USE_HDS_THRS to indicate bnxt_en driver support
header-data-split-thresh option.
- Add Test tag from Stanislav.
v3:
- Drop validation logic tcp-data-split and tcp-data-split-thresh.
v2:
- Patch added.
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 ++-
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 2 ++
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 7 ++++++-
3 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 91ea42ff9b17..7d9da483b867 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4453,6 +4453,7 @@ void bnxt_set_tpa_flags(struct bnxt *bp)
static void bnxt_init_ring_params(struct bnxt *bp)
{
bp->rx_copybreak = BNXT_DEFAULT_RX_COPYBREAK;
+ bp->hds_threshold = BNXT_DEFAULT_RX_COPYBREAK;
}
/* bp->rx_ring_size, bp->tx_ring_size, dev->mtu, BNXT_FLAG_{G|L}RO flags must
@@ -6427,7 +6428,7 @@ static int bnxt_hwrm_vnic_set_hds(struct bnxt *bp, struct bnxt_vnic_info *vnic)
VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV6);
req->enables |=
cpu_to_le32(VNIC_PLCMODES_CFG_REQ_ENABLES_HDS_THRESHOLD_VALID);
- req->hds_threshold = cpu_to_le16(bp->rx_copybreak);
+ req->hds_threshold = cpu_to_le16(bp->hds_threshold);
}
req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
return hwrm_req_send(bp, req);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 432bc19b35ea..e467341f1e5b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -2361,6 +2361,8 @@ struct bnxt {
u8 q_ids[BNXT_MAX_QUEUE];
u8 max_q;
u8 num_tc;
+#define BNXT_HDS_THRESHOLD_MAX 256
+ u16 hds_threshold;
unsigned int current_interval;
#define BNXT_TIMER_INTERVAL HZ
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 5172d0547e0c..73e821a23f56 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -840,6 +840,9 @@ static void bnxt_get_ringparam(struct net_device *dev,
ering->rx_pending = bp->rx_ring_size;
ering->rx_jumbo_pending = bp->rx_agg_ring_size;
ering->tx_pending = bp->tx_ring_size;
+
+ kernel_ering->hds_thresh = bp->hds_threshold;
+ kernel_ering->hds_thresh_max = BNXT_HDS_THRESHOLD_MAX;
}
static int bnxt_set_ringparam(struct net_device *dev,
@@ -869,6 +872,7 @@ static int bnxt_set_ringparam(struct net_device *dev,
break;
}
+ bp->hds_threshold = (u16)kernel_ering->hds_thresh;
bp->rx_ring_size = ering->rx_pending;
bp->tx_ring_size = ering->tx_pending;
bnxt_set_ring_params(bp);
@@ -5357,7 +5361,8 @@ const struct ethtool_ops bnxt_ethtool_ops = {
ETHTOOL_COALESCE_STATS_BLOCK_USECS |
ETHTOOL_COALESCE_USE_ADAPTIVE_RX |
ETHTOOL_COALESCE_USE_CQE,
- .supported_ring_params = ETHTOOL_RING_USE_TCP_DATA_SPLIT,
+ .supported_ring_params = ETHTOOL_RING_USE_TCP_DATA_SPLIT |
+ ETHTOOL_RING_USE_HDS_THRS,
.get_link_ksettings = bnxt_get_link_ksettings,
.set_link_ksettings = bnxt_set_link_ksettings,
.get_fec_stats = bnxt_get_fec_stats,
--
2.34.1
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