Merge branch 'intel-wired-lan-driver-updates-2025-01-06-igb-igc-ixgbe-ixgbevf-i40e-fm10k'

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2025-01-06 (igb, igc, ixgbe, ixgbevf, i40e, fm10k)

For igb:

Sriram Yagnaraman and Kurt Kanzenbach add support for AF_XDP
zero-copy.

Original cover letter:
The first couple of patches adds helper functions to prepare for AF_XDP
zero-copy support which comes in the last couple of patches, one each
for Rx and TX paths.

As mentioned in v1 patchset [0], I don't have access to an actual IGB
device to provide correct performance numbers. I have used Intel 82576EB
emulator in QEMU [1] to test the changes to IGB driver.

The tests use one isolated vCPU for RX/TX and one isolated vCPU for the
xdp-sock application [2]. Hope these measurements provide at the least
some indication on the increase in performance when using ZC, especially
in the TX path. It would be awesome if someone with a real IGB NIC can
test the patch.

AF_XDP performance using 64 byte packets in Kpps.
Benchmark:	XDP-SKB		XDP-DRV		XDP-DRV(ZC)
rxdrop		220		235		350
txpush		1.000		1.000		410
l2fwd 		1.000		1.000		200

AF_XDP performance using 1500 byte packets in Kpps.
Benchmark:	XDP-SKB		XDP-DRV		XDP-DRV(ZC)
rxdrop		200		210		310
txpush		1.000		1.000		410
l2fwd 		0.900		1.000		160

[0]: https://lore.kernel.org/intel-wired-lan/20230704095915.9750-1-sriram.yagnaraman@est.tech/
[1]: https://www.qemu.org/docs/master/system/devices/igb.html
[2]: https://github.com/xdp-project/bpf-examples/tree/master/AF_XDP-example

Subsequent changes and information can be found here:
https://lore.kernel.org/intel-wired-lan/20241018-b4-igb_zero_copy-v9-0-da139d78d796@linutronix.de/

Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.

For igc:

Song Yoong Siang allows for the XDP program to be hot-swapped.

Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.

Joe Damato adds sets IRQ and queues to NAPI instances to allow for
reporting via netdev-genl API.

For ixgbe:

Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.

For ixgbevf:

Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.

For i40e:

Alex implements "mdd-auto-reset-vf" private flag to automatically reset
VFs when encountering an MDD event.

For fm10k:

Dr. David Alan Gilbert removes an unused function.
====================

Link: https://patch.msgid.link/20250106221929.956999-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 0 insertions, 120 deletions

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pf.c b/drivers/net/ethernet/intel/fm10k/fm10k_pf.c
index 98861cc6df7c..b9dd7b719832 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_pf.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_pf.c
@@ -1180,126 +1180,6 @@ s32 fm10k_iov_select_vid(struct fm10k_vf_info *vf_info, u16 vid)
 }
 
 /**
- *  fm10k_iov_msg_mac_vlan_pf - Message handler for MAC/VLAN request from VF
- *  @hw: Pointer to hardware structure
- *  @results: Pointer array to message, results[0] is pointer to message
- *  @mbx: Pointer to mailbox information structure
- *
- *  This function is a default handler for MAC/VLAN requests from the VF.
- *  The assumption is that in this case it is acceptable to just directly
- *  hand off the message from the VF to the underlying shared code.
- **/
-s32 fm10k_iov_msg_mac_vlan_pf(struct fm10k_hw *hw, u32 **results,
-			      struct fm10k_mbx_info *mbx)
-{
-	struct fm10k_vf_info *vf_info = (struct fm10k_vf_info *)mbx;
-	u8 mac[ETH_ALEN];
-	u32 *result;
-	int err = 0;
-	bool set;
-	u16 vlan;
-	u32 vid;
-
-	/* we shouldn't be updating rules on a disabled interface */
-	if (!FM10K_VF_FLAG_ENABLED(vf_info))
-		err = FM10K_ERR_PARAM;
-
-	if (!err && !!results[FM10K_MAC_VLAN_MSG_VLAN]) {
-		result = results[FM10K_MAC_VLAN_MSG_VLAN];
-
-		/* record VLAN id requested */
-		err = fm10k_tlv_attr_get_u32(result, &vid);
-		if (err)
-			return err;
-
-		set = !(vid & FM10K_VLAN_CLEAR);
-		vid &= ~FM10K_VLAN_CLEAR;
-
-		/* if the length field has been set, this is a multi-bit
-		 * update request. For multi-bit requests, simply disallow
-		 * them when the pf_vid has been set. In this case, the PF
-		 * should have already cleared the VLAN_TABLE, and if we
-		 * allowed them, it could allow a rogue VF to receive traffic
-		 * on a VLAN it was not assigned. In the single-bit case, we
-		 * need to modify requests for VLAN 0 to use the default PF or
-		 * SW vid when assigned.
-		 */
-
-		if (vid >> 16) {
-			/* prevent multi-bit requests when PF has
-			 * administratively set the VLAN for this VF
-			 */
-			if (vf_info->pf_vid)
-				return FM10K_ERR_PARAM;
-		} else {
-			err = fm10k_iov_select_vid(vf_info, (u16)vid);
-			if (err < 0)
-				return err;
-
-			vid = err;
-		}
-
-		/* update VSI info for VF in regards to VLAN table */
-		err = hw->mac.ops.update_vlan(hw, vid, vf_info->vsi, set);
-	}
-
-	if (!err && !!results[FM10K_MAC_VLAN_MSG_MAC]) {
-		result = results[FM10K_MAC_VLAN_MSG_MAC];
-
-		/* record unicast MAC address requested */
-		err = fm10k_tlv_attr_get_mac_vlan(result, mac, &vlan);
-		if (err)
-			return err;
-
-		/* block attempts to set MAC for a locked device */
-		if (is_valid_ether_addr(vf_info->mac) &&
-		    !ether_addr_equal(mac, vf_info->mac))
-			return FM10K_ERR_PARAM;
-
-		set = !(vlan & FM10K_VLAN_CLEAR);
-		vlan &= ~FM10K_VLAN_CLEAR;
-
-		err = fm10k_iov_select_vid(vf_info, vlan);
-		if (err < 0)
-			return err;
-
-		vlan = (u16)err;
-
-		/* notify switch of request for new unicast address */
-		err = hw->mac.ops.update_uc_addr(hw, vf_info->glort,
-						 mac, vlan, set, 0);
-	}
-
-	if (!err && !!results[FM10K_MAC_VLAN_MSG_MULTICAST]) {
-		result = results[FM10K_MAC_VLAN_MSG_MULTICAST];
-
-		/* record multicast MAC address requested */
-		err = fm10k_tlv_attr_get_mac_vlan(result, mac, &vlan);
-		if (err)
-			return err;
-
-		/* verify that the VF is allowed to request multicast */
-		if (!(vf_info->vf_flags & FM10K_VF_FLAG_MULTI_ENABLED))
-			return FM10K_ERR_PARAM;
-
-		set = !(vlan & FM10K_VLAN_CLEAR);
-		vlan &= ~FM10K_VLAN_CLEAR;
-
-		err = fm10k_iov_select_vid(vf_info, vlan);
-		if (err < 0)
-			return err;
-
-		vlan = (u16)err;
-
-		/* notify switch of request for new multicast address */
-		err = hw->mac.ops.update_mc_addr(hw, vf_info->glort,
-						 mac, vlan, set);
-	}
-
-	return err;
-}
-
-/**
  *  fm10k_iov_supported_xcast_mode_pf - Determine best match for xcast mode
  *  @vf_info: VF info structure containing capability flags
  *  @mode: Requested xcast mode