git.ipfire.org Git - thirdparty/openwrt.git/blob

   1 From 8cae5a0d91fea01d90ce7c1827e26934a22ca2fa Mon Sep 17 00:00:00 2001
   2 From: Rui Salvaterra <rsalvaterra@gmail.com>
   3 Date: Wed, 5 Mar 2025 11:53:56 +0000
   4 Subject: [PATCH] igc: enable HW vlan tag insertion/stripping by default
   5
   6 This is enabled by default in other Intel drivers I've checked (e1000, e1000e,
   7 iavf, igb and ice). Fixes an out-of-the-box performance issue when running
   8 OpenWrt on typical mini-PCs with igc-supported Ethernet controllers and 802.1Q
   9 VLAN configurations, as ethtool isn't part of the default packages and sane
  10 defaults are expected.
  11
  12 In my specific case, with an Intel N100-based machine with four I226-V Ethernet
  13 controllers, my upload performance increased from under 30 Mb/s to the expected
  14 ~1 Gb/s.
  15
  16 Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
  17 ---
  18  drivers/net/ethernet/intel/igc/igc_main.c | 3 +++
  19  1 file changed, 3 insertions(+)
  20
  21 --- a/drivers/net/ethernet/intel/igc/igc_main.c
  22 +++ b/drivers/net/ethernet/intel/igc/igc_main.c
  23 @@ -7066,6 +7066,9 @@ static int igc_probe(struct pci_dev *pde
  24         netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
  25                                NETDEV_XDP_ACT_XSK_ZEROCOPY;
  26
  27 +       /* enable HW vlan tag insertion/stripping by default */
  28 +       netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
  29 +
  30         /* MTU range: 68 - 9216 */
  31         netdev->min_mtu = ETH_MIN_MTU;
  32         netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE;