From: Andrii Staikov Date: Wed, 29 Nov 2023 14:24:12 +0000 (+0100) Subject: i40e: Fix VF disable behavior to block all traffic X-Git-Tag: v6.6.17~300 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d973bf8ec3e861bd4e0b1bbe6a23c9e63a63a369;p=platform%2Fkernel%2Flinux-rpi.git i40e: Fix VF disable behavior to block all traffic [ Upstream commit 31deb12e85c35ddd2c037f0107d05d8674cab2c0 ] Currently, if a VF is disabled using the 'ip link set dev $ETHX vf $VF_NUM state disable' command, the VF is still able to receive traffic. Fix the behavior of the 'ip link set dev $ETHX vf $VF_NUM state disable' to completely shutdown the VF's queues making it entirely disabled and not able to receive or send any traffic. Modify the behavior of the 'ip link set $ETHX vf $VF_NUM state enable' command to make a VF do reinitialization bringing the queues back up. Co-developed-by: Aleksandr Loktionov Signed-off-by: Aleksandr Loktionov Reviewed-by: Jan Sokolowski Reviewed-by: Wojciech Drewek Reviewed-by: Przemek Kitszel Signed-off-by: Andrii Staikov Tested-by: Rafal Romanowski Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index a97ca22..cc4c534 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -2605,6 +2605,14 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg) int aq_ret = 0; int i; + if (vf->is_disabled_from_host) { + aq_ret = -EPERM; + dev_info(&pf->pdev->dev, + "Admin has disabled VF %d, will not enable queues\n", + vf->vf_id); + goto error_param; + } + if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) { aq_ret = -EINVAL; goto error_param; @@ -4732,9 +4740,12 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link) struct i40e_link_status *ls = &pf->hw.phy.link_info; struct virtchnl_pf_event pfe; struct i40e_hw *hw = &pf->hw; + struct i40e_vsi *vsi; + unsigned long q_map; struct i40e_vf *vf; int abs_vf_id; int ret = 0; + int tmp; if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); @@ -4757,17 +4768,38 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link) switch (link) { case IFLA_VF_LINK_STATE_AUTO: vf->link_forced = false; + vf->is_disabled_from_host = false; + /* reset needed to reinit VF resources */ + i40e_vc_reset_vf(vf, true); i40e_set_vf_link_state(vf, &pfe, ls); break; case IFLA_VF_LINK_STATE_ENABLE: vf->link_forced = true; vf->link_up = true; + vf->is_disabled_from_host = false; + /* reset needed to reinit VF resources */ + i40e_vc_reset_vf(vf, true); i40e_set_vf_link_state(vf, &pfe, ls); break; case IFLA_VF_LINK_STATE_DISABLE: vf->link_forced = true; vf->link_up = false; i40e_set_vf_link_state(vf, &pfe, ls); + + vsi = pf->vsi[vf->lan_vsi_idx]; + q_map = BIT(vsi->num_queue_pairs) - 1; + + vf->is_disabled_from_host = true; + + /* Try to stop both Tx&Rx rings even if one of the calls fails + * to ensure we stop the rings even in case of errors. + * If any of them returns with an error then the first + * error that occurred will be returned. + */ + tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false); + ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false); + + ret = tmp ? tmp : ret; break; default: ret = -EINVAL; diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h index bda9ba6..cf19076 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h @@ -98,6 +98,7 @@ struct i40e_vf { bool link_forced; bool link_up; /* only valid if VF link is forced */ bool spoofchk; + bool is_disabled_from_host; /* PF ctrl of VF enable/disable */ u16 num_vlan; /* ADq related variables */