From 84eaf4359c36b0ba888f571a964138d22ba5914f Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 17 Sep 2025 02:58:11 -0700 Subject: net: ethtool: add get_rx_ring_count callback to optimize RX ring queries Add a new optional get_rx_ring_count callback in ethtool_ops to allow drivers to provide the number of RX rings directly without going through the full get_rxnfc flow classification interface. Create ethtool_get_rx_ring_count() to use .get_rx_ring_count if available, falling back to get_rxnfc() otherwise. It needs to be non-static, given it will be called by other ethtool functions laters, as those calling get_rxfh(). Signed-off-by: Breno Leitao Link: https://patch.msgid.link/20250917-gxrings-v4-4-dae520e2e1cb@debian.org Signed-off-by: Jakub Kicinski --- include/linux/ethtool.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index d7d757e72554..c869b7f8bce8 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -968,6 +968,7 @@ struct kernel_ethtool_ts_info { * @reset: Reset (part of) the device, as specified by a bitmask of * flags from &enum ethtool_reset_flags. Returns a negative * error code or zero. + * @get_rx_ring_count: Return the number of RX rings * @get_rxfh_key_size: Get the size of the RX flow hash key. * Returns zero if not supported for this specific device. * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table. @@ -1162,6 +1163,7 @@ struct ethtool_ops { int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *); int (*flash_device)(struct net_device *, struct ethtool_flash *); int (*reset)(struct net_device *, u32 *); + u32 (*get_rx_ring_count)(struct net_device *dev); u32 (*get_rxfh_key_size)(struct net_device *); u32 (*get_rxfh_indir_size)(struct net_device *); int (*get_rxfh)(struct net_device *, struct ethtool_rxfh_param *); -- cgit v1.2.3