Merge branch '200GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2025-07-18 (idpf, ice, igc, igbvf, ixgbevf)

For idpf:
Ahmed and Sudheer add support for flow steering via ntuple filters.
Current support is for IPv4 and TCP/UDP only.

Milena adds support for cross timestamping.

Ahmed preserves coalesce settings across resets.

For ice:
Alex adds reporting of 40GbE speed in devlink port split.

Dawid adds support for E835 devices.

Jesse refactors profile ptype processing for cleaner, more readable,
code.

Dave adds a couple of helper functions for LAG to reduce code
duplication.

For igc:
Siang adds support to configure "Default Queue" during runtime using
ethtool's Network Flow Classification (NFC) wildcard rule approach.

For igbvf:
Yuto Ohnuki removes unused fields from igbvf_adapter.

For ixgbevf:
Yuto Ohnuki removes unused fields from ixgbevf_adapter.

* '200GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  ixgbevf: remove unused fields from struct ixgbevf_adapter
  igbvf: remove unused fields from struct igbvf_adapter
  igc: Add wildcard rule support to ethtool NFC using Default Queue
  igc: Relocate RSS field definitions to igc_defines.h
  ice: breakout common LAG code into helpers
  ice: convert ice_add_prof() to bitmap
  ice: add E835 device IDs
  ice: add 40G speed to Admin Command GET PORT OPTION
  idpf: preserve coalescing settings across resets
  idpf: add cross timestamping
  idpf: add flow steering support
  virtchnl2: add flow steering support
  virtchnl2: rename enum virtchnl2_cap_rss
====================

Link: https://patch.msgid.link/20250718185118.2042772-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c
index a7f397b58cd6..ecb35b693ce5 100644
--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c
@@ -1283,6 +1283,24 @@ static void igc_ethtool_init_nfc_rule(struct igc_nfc_rule *rule,
 		rule->flex = true;
 	else
 		rule->flex = false;
+
+	/* The wildcard rule is only applied if:
+	 *  a) None of the other filtering rules match (match_flags is zero)
+	 *  b) The flow type is ETHER_FLOW only (no additional fields set)
+	 *  c) Mask for Source MAC address is not specified (all zeros)
+	 *  d) Mask for Destination MAC address is not specified (all zeros)
+	 *  e) Mask for L2 EtherType is not specified (zero)
+	 *
+	 * If all these conditions are met, the rule is treated as a wildcard
+	 * rule. Default queue feature will be used, so that all packets that do
+	 * not match any other rule will be routed to the default queue.
+	 */
+	if (!rule->filter.match_flags &&
+	    fsp->flow_type == ETHER_FLOW &&
+	    is_zero_ether_addr(fsp->m_u.ether_spec.h_source) &&
+	    is_zero_ether_addr(fsp->m_u.ether_spec.h_dest) &&
+	    !fsp->m_u.ether_spec.h_proto)
+		rule->filter.match_flags = IGC_FILTER_FLAG_DEFAULT_QUEUE;
 }
 
 /**