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Message-ID: <202512180618.zgXQvXlK-lkp@intel.com>
Date: Thu, 18 Dec 2025 06:46:42 +0800
From: kernel test robot <lkp@...el.com>
To: "Yury Norov (NVIDIA)" <yury.norov@...il.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
intel-wired-lan@...ts.osuosl.org, linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
netdev@...r.kernel.org,
"Yury Norov (NVIDIA)" <yury.norov@...il.com>
Subject: Re: [PATCH] i40e: drop useless bitmap_weight() call in
i40e_set_rxfh_fields()
Hi Yury,
kernel test robot noticed the following build errors:
[auto build test ERROR on tnguy-next-queue/dev-queue]
[also build test ERROR on tnguy-net-queue/dev-queue linus/master v6.19-rc1 next-20251217]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yury-Norov-NVIDIA/i40e-drop-useless-bitmap_weight-call-in-i40e_set_rxfh_fields/20251216-083033
base: https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git dev-queue
patch link: https://lore.kernel.org/r/20251216002852.334561-1-yury.norov%40gmail.com
patch subject: [PATCH] i40e: drop useless bitmap_weight() call in i40e_set_rxfh_fields()
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20251218/202512180618.zgXQvXlK-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251218/202512180618.zgXQvXlK-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512180618.zgXQvXlK-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3711:19: error: use of undeclared identifier 'flow_id'
3711 | for_each_set_bit(flow_id, flow_pctypes, FLOW_PCTYPES_SIZE) {
| ^
>> drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3711:19: error: use of undeclared identifier 'flow_id'
>> drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3711:19: error: use of undeclared identifier 'flow_id'
>> drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3711:19: error: use of undeclared identifier 'flow_id'
>> drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3711:19: error: use of undeclared identifier 'flow_id'
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3712:62: error: use of undeclared identifier 'flow_id'
3712 | i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id)) |
| ^
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3713:56: error: use of undeclared identifier 'flow_id'
3713 | ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id)) << 32);
| ^
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3716:49: error: use of undeclared identifier 'flow_id'
3716 | i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id),
| ^
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3718:49: error: use of undeclared identifier 'flow_id'
3718 | i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id),
| ^
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:3720:19: error: use of undeclared identifier 'flow_id'
3720 | hena |= BIT_ULL(flow_id);
| ^
10 errors generated.
vim +/flow_id +3711 drivers/net/ethernet/intel/i40e/i40e_ethtool.c
eb0dd6e4a3b3df Carolyn Wyborny 2016-07-27 3614
3b32c9932853e1 Slawomir Laba 2022-10-24 3615 #define FLOW_PCTYPES_SIZE 64
5a28983710b739 Jakub Kicinski 2025-06-14 3616 static int i40e_set_rxfh_fields(struct net_device *netdev,
5a28983710b739 Jakub Kicinski 2025-06-14 3617 const struct ethtool_rxfh_fields *nfc,
5a28983710b739 Jakub Kicinski 2025-06-14 3618 struct netlink_ext_ack *extack)
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3619 {
5a28983710b739 Jakub Kicinski 2025-06-14 3620 struct i40e_netdev_priv *np = netdev_priv(netdev);
5a28983710b739 Jakub Kicinski 2025-06-14 3621 struct i40e_vsi *vsi = np->vsi;
5a28983710b739 Jakub Kicinski 2025-06-14 3622 struct i40e_pf *pf = vsi->back;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3623 struct i40e_hw *hw = &pf->hw;
272cdaf2472ab7 Shannon Nelson 2016-02-17 3624 u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
272cdaf2472ab7 Shannon Nelson 2016-02-17 3625 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3b32c9932853e1 Slawomir Laba 2022-10-24 3626 DECLARE_BITMAP(flow_pctypes, FLOW_PCTYPES_SIZE);
eb0dd6e4a3b3df Carolyn Wyborny 2016-07-27 3627 u64 i_set, i_setc;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3628
3b32c9932853e1 Slawomir Laba 2022-10-24 3629 bitmap_zero(flow_pctypes, FLOW_PCTYPES_SIZE);
3b32c9932853e1 Slawomir Laba 2022-10-24 3630
70756d0a4727fe Ivan Vecera 2023-11-13 3631 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
83d14c595e011f Carolyn Wyborny 2017-06-07 3632 dev_err(&pf->pdev->dev,
83d14c595e011f Carolyn Wyborny 2017-06-07 3633 "Change of RSS hash input set is not supported when MFP mode is enabled\n");
83d14c595e011f Carolyn Wyborny 2017-06-07 3634 return -EOPNOTSUPP;
83d14c595e011f Carolyn Wyborny 2017-06-07 3635 }
83d14c595e011f Carolyn Wyborny 2017-06-07 3636
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3637 /* RSS does not support anything other than hashing
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3638 * to queues on src and dst IPs and ports
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3639 */
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3640 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3641 RXH_L4_B_0_1 | RXH_L4_B_2_3))
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3642 return -EINVAL;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3643
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3644 switch (nfc->flow_type) {
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3645 case TCP_V4_FLOW:
141d0c9037ca57 Jacob Keller 2025-05-05 3646 set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP, flow_pctypes);
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3647 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3648 pf->hw.caps))
141d0c9037ca57 Jacob Keller 2025-05-05 3649 set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK,
3b32c9932853e1 Slawomir Laba 2022-10-24 3650 flow_pctypes);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3651 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3652 case TCP_V6_FLOW:
141d0c9037ca57 Jacob Keller 2025-05-05 3653 set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP, flow_pctypes);
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3654 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3655 pf->hw.caps))
141d0c9037ca57 Jacob Keller 2025-05-05 3656 set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK,
3b32c9932853e1 Slawomir Laba 2022-10-24 3657 flow_pctypes);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3658 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3659 case UDP_V4_FLOW:
141d0c9037ca57 Jacob Keller 2025-05-05 3660 set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV4_UDP, flow_pctypes);
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3661 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3662 pf->hw.caps)) {
141d0c9037ca57 Jacob Keller 2025-05-05 3663 set_bit(LIBIE_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP,
3b32c9932853e1 Slawomir Laba 2022-10-24 3664 flow_pctypes);
141d0c9037ca57 Jacob Keller 2025-05-05 3665 set_bit(LIBIE_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP,
3b32c9932853e1 Slawomir Laba 2022-10-24 3666 flow_pctypes);
3b32c9932853e1 Slawomir Laba 2022-10-24 3667 }
141d0c9037ca57 Jacob Keller 2025-05-05 3668 hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV4);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3669 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3670 case UDP_V6_FLOW:
141d0c9037ca57 Jacob Keller 2025-05-05 3671 set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV6_UDP, flow_pctypes);
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3672 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
0e8b9fdd40fe65 Ivan Vecera 2023-11-13 3673 pf->hw.caps)) {
141d0c9037ca57 Jacob Keller 2025-05-05 3674 set_bit(LIBIE_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP,
3b32c9932853e1 Slawomir Laba 2022-10-24 3675 flow_pctypes);
141d0c9037ca57 Jacob Keller 2025-05-05 3676 set_bit(LIBIE_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP,
3b32c9932853e1 Slawomir Laba 2022-10-24 3677 flow_pctypes);
3b32c9932853e1 Slawomir Laba 2022-10-24 3678 }
141d0c9037ca57 Jacob Keller 2025-05-05 3679 hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV6);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3680 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3681 case AH_ESP_V4_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3682 case AH_V4_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3683 case ESP_V4_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3684 case SCTP_V4_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3685 if ((nfc->data & RXH_L4_B_0_1) ||
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3686 (nfc->data & RXH_L4_B_2_3))
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3687 return -EINVAL;
141d0c9037ca57 Jacob Keller 2025-05-05 3688 hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3689 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3690 case AH_ESP_V6_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3691 case AH_V6_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3692 case ESP_V6_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3693 case SCTP_V6_FLOW:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3694 if ((nfc->data & RXH_L4_B_0_1) ||
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3695 (nfc->data & RXH_L4_B_2_3))
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3696 return -EINVAL;
141d0c9037ca57 Jacob Keller 2025-05-05 3697 hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV6_OTHER);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3698 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3699 case IPV4_FLOW:
141d0c9037ca57 Jacob Keller 2025-05-05 3700 hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER) |
141d0c9037ca57 Jacob Keller 2025-05-05 3701 BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV4);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3702 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3703 case IPV6_FLOW:
141d0c9037ca57 Jacob Keller 2025-05-05 3704 hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV6_OTHER) |
141d0c9037ca57 Jacob Keller 2025-05-05 3705 BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV6);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3706 break;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3707 default:
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3708 return -EINVAL;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3709 }
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3710
3b32c9932853e1 Slawomir Laba 2022-10-24 @3711 for_each_set_bit(flow_id, flow_pctypes, FLOW_PCTYPES_SIZE) {
3b32c9932853e1 Slawomir Laba 2022-10-24 3712 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id)) |
3b32c9932853e1 Slawomir Laba 2022-10-24 3713 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id)) << 32);
54b5af5a438076 Slawomir Laba 2022-10-24 3714 i_set = i40e_get_rss_hash_bits(&pf->hw, nfc, i_setc);
3b32c9932853e1 Slawomir Laba 2022-10-24 3715
3b32c9932853e1 Slawomir Laba 2022-10-24 3716 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id),
eb0dd6e4a3b3df Carolyn Wyborny 2016-07-27 3717 (u32)i_set);
3b32c9932853e1 Slawomir Laba 2022-10-24 3718 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id),
eb0dd6e4a3b3df Carolyn Wyborny 2016-07-27 3719 (u32)(i_set >> 32));
3b32c9932853e1 Slawomir Laba 2022-10-24 3720 hena |= BIT_ULL(flow_id);
3b32c9932853e1 Slawomir Laba 2022-10-24 3721 }
eb0dd6e4a3b3df Carolyn Wyborny 2016-07-27 3722
272cdaf2472ab7 Shannon Nelson 2016-02-17 3723 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
272cdaf2472ab7 Shannon Nelson 2016-02-17 3724 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3725 i40e_flush(hw);
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3726
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3727 return 0;
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3728 }
c7d05ca89f8e40 Jesse Brandeburg 2013-09-11 3729
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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