From cede04b35258faaa5acc3932ac07ab855d59e5f3 Mon Sep 17 00:00:00 2001 From: Michal Swiatkowski Date: Mon, 25 Apr 2022 08:27:55 +0200 Subject: ice: don't set VF VLAN caps in switchdev In switchdev mode any VLAN manipulation from VF side isn't allowed. In order to prevent parsing VLAN commands don't set VF VLAN caps. This will result in removing VLAN specific opcodes from allowlist. If VF send any VLAN specific opcode PF driver will answer with not supported error. With this approach VF driver know that VLAN caps aren't supported so it shouldn't send VLAN specific opcodes. Thanks to that, some ugly errors will not show up in dmesg (ex. on creating VFs in switchdev mode there are errors about not supported VLAN insertion and stripping) Move setting VLAN caps to separate function, including switchdev mode specific code. Signed-off-by: Michal Swiatkowski Tested-by: Sandeep Penigalapati Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_virtchnl.c | 77 +++++++++++++++++---------- 1 file changed, 50 insertions(+), 27 deletions(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c index 1d9b84c3937a..9b2d862e11d8 100644 --- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c +++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c @@ -359,6 +359,54 @@ static u16 ice_vc_get_max_frame_size(struct ice_vf *vf) return max_frame_size; } +/** + * ice_vc_get_vlan_caps + * @hw: pointer to the hw + * @vf: pointer to the VF info + * @vsi: pointer to the VSI + * @driver_caps: current driver caps + * + * Return 0 if there is no VLAN caps supported, or VLAN caps value + */ +static u32 +ice_vc_get_vlan_caps(struct ice_hw *hw, struct ice_vf *vf, struct ice_vsi *vsi, + u32 driver_caps) +{ + if (ice_is_eswitch_mode_switchdev(vf->pf)) + /* In switchdev setting VLAN from VF isn't supported */ + return 0; + + if (driver_caps & VIRTCHNL_VF_OFFLOAD_VLAN_V2) { + /* VLAN offloads based on current device configuration */ + return VIRTCHNL_VF_OFFLOAD_VLAN_V2; + } else if (driver_caps & VIRTCHNL_VF_OFFLOAD_VLAN) { + /* allow VF to negotiate VIRTCHNL_VF_OFFLOAD explicitly for + * these two conditions, which amounts to guest VLAN filtering + * and offloads being based on the inner VLAN or the + * inner/single VLAN respectively and don't allow VF to + * negotiate VIRTCHNL_VF_OFFLOAD in any other cases + */ + if (ice_is_dvm_ena(hw) && ice_vf_is_port_vlan_ena(vf)) { + return VIRTCHNL_VF_OFFLOAD_VLAN; + } else if (!ice_is_dvm_ena(hw) && + !ice_vf_is_port_vlan_ena(vf)) { + /* configure backward compatible support for VFs that + * only support VIRTCHNL_VF_OFFLOAD_VLAN, the PF is + * configured in SVM, and no port VLAN is configured + */ + ice_vf_vsi_cfg_svm_legacy_vlan_mode(vsi); + return VIRTCHNL_VF_OFFLOAD_VLAN; + } else if (ice_is_dvm_ena(hw)) { + /* configure software offloaded VLAN support when DVM + * is enabled, but no port VLAN is enabled + */ + ice_vf_vsi_cfg_dvm_legacy_vlan_mode(vsi); + } + } + + return 0; +} + /** * ice_vc_get_vf_res_msg * @vf: pointer to the VF info @@ -402,33 +450,8 @@ static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg) goto err; } - if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_VLAN_V2) { - /* VLAN offloads based on current device configuration */ - vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN_V2; - } else if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_VLAN) { - /* allow VF to negotiate VIRTCHNL_VF_OFFLOAD explicitly for - * these two conditions, which amounts to guest VLAN filtering - * and offloads being based on the inner VLAN or the - * inner/single VLAN respectively and don't allow VF to - * negotiate VIRTCHNL_VF_OFFLOAD in any other cases - */ - if (ice_is_dvm_ena(hw) && ice_vf_is_port_vlan_ena(vf)) { - vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN; - } else if (!ice_is_dvm_ena(hw) && - !ice_vf_is_port_vlan_ena(vf)) { - vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN; - /* configure backward compatible support for VFs that - * only support VIRTCHNL_VF_OFFLOAD_VLAN, the PF is - * configured in SVM, and no port VLAN is configured - */ - ice_vf_vsi_cfg_svm_legacy_vlan_mode(vsi); - } else if (ice_is_dvm_ena(hw)) { - /* configure software offloaded VLAN support when DVM - * is enabled, but no port VLAN is enabled - */ - ice_vf_vsi_cfg_dvm_legacy_vlan_mode(vsi); - } - } + vfres->vf_cap_flags |= ice_vc_get_vlan_caps(hw, vf, vsi, + vf->driver_caps); if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) { vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF; -- cgit v1.2.3