diff mbox series

[net-next,5/7] bnxt_en: Support CQE coalescing mode in ethtool

Message ID 1640592032-8927-6-git-send-email-michael.chan@broadcom.com (mailing list archive)
State Superseded
Commit 3fcbdbd5d8d51d14ad5687a253990e89da9b7661
Delegated to: Netdev Maintainers
Headers show
Series bnxt_en: Update for net-next | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 3 of 3 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 60 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Michael Chan Dec. 27, 2021, 8 a.m. UTC 
Support showing and setting the CQE mode in ethtool.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 24 ++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 15253396096a..46859d9a01eb 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -68,6 +68,9 @@  static int bnxt_get_coalesce(struct net_device *dev,
 	coal->rx_max_coalesced_frames = hw_coal->coal_bufs / mult;
 	coal->rx_coalesce_usecs_irq = hw_coal->coal_ticks_irq;
 	coal->rx_max_coalesced_frames_irq = hw_coal->coal_bufs_irq / mult;
+	if (hw_coal->flags &
+	    RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_TIMER_RESET)
+		kernel_coal->use_cqe_mode_rx = true;
 
 	hw_coal = &bp->tx_coal;
 	mult = hw_coal->bufs_per_record;
@@ -75,6 +78,9 @@  static int bnxt_get_coalesce(struct net_device *dev,
 	coal->tx_max_coalesced_frames = hw_coal->coal_bufs / mult;
 	coal->tx_coalesce_usecs_irq = hw_coal->coal_ticks_irq;
 	coal->tx_max_coalesced_frames_irq = hw_coal->coal_bufs_irq / mult;
+	if (hw_coal->flags &
+	    RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_TIMER_RESET)
+		kernel_coal->use_cqe_mode_tx = true;
 
 	coal->stats_block_coalesce_usecs = bp->stats_coal_ticks;
 
@@ -101,12 +107,22 @@  static int bnxt_set_coalesce(struct net_device *dev,
 		}
 	}
 
+	if ((kernel_coal->use_cqe_mode_rx || kernel_coal->use_cqe_mode_tx) &&
+	    !(bp->coal_cap.cmpl_params &
+	      RING_AGGINT_QCAPS_RESP_CMPL_PARAMS_TIMER_RESET))
+		return -EOPNOTSUPP;
+
 	hw_coal = &bp->rx_coal;
 	mult = hw_coal->bufs_per_record;
 	hw_coal->coal_ticks = coal->rx_coalesce_usecs;
 	hw_coal->coal_bufs = coal->rx_max_coalesced_frames * mult;
 	hw_coal->coal_ticks_irq = coal->rx_coalesce_usecs_irq;
 	hw_coal->coal_bufs_irq = coal->rx_max_coalesced_frames_irq * mult;
+	hw_coal->flags &=
+		~RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_TIMER_RESET;
+	if (kernel_coal->use_cqe_mode_rx)
+		hw_coal->flags |=
+			RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_TIMER_RESET;
 
 	hw_coal = &bp->tx_coal;
 	mult = hw_coal->bufs_per_record;
@@ -114,6 +130,11 @@  static int bnxt_set_coalesce(struct net_device *dev,
 	hw_coal->coal_bufs = coal->tx_max_coalesced_frames * mult;
 	hw_coal->coal_ticks_irq = coal->tx_coalesce_usecs_irq;
 	hw_coal->coal_bufs_irq = coal->tx_max_coalesced_frames_irq * mult;
+	hw_coal->flags &=
+		~RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_TIMER_RESET;
+	if (kernel_coal->use_cqe_mode_tx)
+		hw_coal->flags |=
+			RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_TIMER_RESET;
 
 	if (bp->stats_coal_ticks != coal->stats_block_coalesce_usecs) {
 		u32 stats_ticks = coal->stats_block_coalesce_usecs;
@@ -3921,7 +3942,8 @@  const struct ethtool_ops bnxt_ethtool_ops = {
 				     ETHTOOL_COALESCE_USECS_IRQ |
 				     ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
 				     ETHTOOL_COALESCE_STATS_BLOCK_USECS |
-				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
+				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX |
+				     ETHTOOL_COALESCE_USE_CQE,
 	.get_link_ksettings	= bnxt_get_link_ksettings,
 	.set_link_ksettings	= bnxt_set_link_ksettings,
 	.get_fec_stats		= bnxt_get_fec_stats,