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2ad1274fa3
Commit d3d657a908 ("i40e: update VFs of link state after
GET_VF_RESOURCES") modified the PF driver to notify a VF of
its link status immediately after it requests resources.
This was intended to fix reporting on VF drivers, so that they would
properly report link status.
However, some older VF drivers do not respond well to receiving a link
up notification before queues are enabled. This can cause their state
machine to think that it is safe to send traffic. This results in a Tx
hang on the VF.
More recent versions of the old i40evf and all versions of iavf are
resilient to these early link status messages. However, if a VM happens
to run an older version of the VF driver, this can be problematic.
Record whether the PF has actually enabled queues for the VF. When
reporting link status, always report link down if the queues aren't
enabled. In this way, the VF driver will never receive a link up
notification until after its queues are enabled.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2013 - 2018 Intel Corporation. */
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#ifndef _I40E_VIRTCHNL_PF_H_
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#define _I40E_VIRTCHNL_PF_H_
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#include "i40e.h"
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#define I40E_MAX_VLANID 4095
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#define I40E_VIRTCHNL_SUPPORTED_QTYPES 2
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#define I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED 3
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#define I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED 10
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#define I40E_VLAN_PRIORITY_SHIFT 13
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#define I40E_VLAN_MASK 0xFFF
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#define I40E_PRIORITY_MASK 0xE000
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#define I40E_MAX_VF_PROMISC_FLAGS 3
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/* Various queue ctrls */
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enum i40e_queue_ctrl {
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I40E_QUEUE_CTRL_UNKNOWN = 0,
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I40E_QUEUE_CTRL_ENABLE,
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I40E_QUEUE_CTRL_ENABLECHECK,
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I40E_QUEUE_CTRL_DISABLE,
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I40E_QUEUE_CTRL_DISABLECHECK,
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I40E_QUEUE_CTRL_FASTDISABLE,
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I40E_QUEUE_CTRL_FASTDISABLECHECK,
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};
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/* VF states */
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enum i40e_vf_states {
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I40E_VF_STATE_INIT = 0,
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I40E_VF_STATE_ACTIVE,
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I40E_VF_STATE_IWARPENA,
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I40E_VF_STATE_DISABLED,
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I40E_VF_STATE_MC_PROMISC,
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I40E_VF_STATE_UC_PROMISC,
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I40E_VF_STATE_PRE_ENABLE,
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};
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/* VF capabilities */
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enum i40e_vf_capabilities {
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I40E_VIRTCHNL_VF_CAP_PRIVILEGE = 0,
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I40E_VIRTCHNL_VF_CAP_L2,
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I40E_VIRTCHNL_VF_CAP_IWARP,
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};
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/* In ADq, max 4 VSI's can be allocated per VF including primary VF VSI.
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* These variables are used to store indices, id's and number of queues
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* for each VSI including that of primary VF VSI. Each Traffic class is
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* termed as channel and each channel can in-turn have 4 queues which
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* means max 16 queues overall per VF.
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*/
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struct i40evf_channel {
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u16 vsi_idx; /* index in PF struct for all channel VSIs */
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u16 vsi_id; /* VSI ID used by firmware */
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u16 num_qps; /* number of queue pairs requested by user */
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u64 max_tx_rate; /* bandwidth rate allocation for VSIs */
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};
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/* VF information structure */
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struct i40e_vf {
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struct i40e_pf *pf;
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/* VF id in the PF space */
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s16 vf_id;
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/* all VF vsis connect to the same parent */
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enum i40e_switch_element_types parent_type;
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struct virtchnl_version_info vf_ver;
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u32 driver_caps; /* reported by VF driver */
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/* VF Port Extender (PE) stag if used */
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u16 stag;
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struct virtchnl_ether_addr default_lan_addr;
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u16 port_vlan_id;
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bool pf_set_mac; /* The VMM admin set the VF MAC address */
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bool trusted;
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/* VSI indices - actual VSI pointers are maintained in the PF structure
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* When assigned, these will be non-zero, because VSI 0 is always
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* the main LAN VSI for the PF.
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*/
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u16 lan_vsi_idx; /* index into PF struct */
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u16 lan_vsi_id; /* ID as used by firmware */
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u8 num_queue_pairs; /* num of qps assigned to VF vsis */
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u8 num_req_queues; /* num of requested qps */
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u64 num_mdd_events; /* num of mdd events detected */
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/* num of continuous malformed or invalid msgs detected */
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u64 num_invalid_msgs;
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u64 num_valid_msgs; /* num of valid msgs detected */
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unsigned long vf_caps; /* vf's adv. capabilities */
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unsigned long vf_states; /* vf's runtime states */
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unsigned int tx_rate; /* Tx bandwidth limit in Mbps */
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bool link_forced;
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bool link_up; /* only valid if VF link is forced */
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bool queues_enabled; /* true if the VF queues are enabled */
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bool spoofchk;
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u16 num_mac;
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u16 num_vlan;
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/* ADq related variables */
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bool adq_enabled; /* flag to enable adq */
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u8 num_tc;
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struct i40evf_channel ch[I40E_MAX_VF_VSI];
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struct hlist_head cloud_filter_list;
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u16 num_cloud_filters;
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/* RDMA Client */
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struct virtchnl_iwarp_qvlist_info *qvlist_info;
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};
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void i40e_free_vfs(struct i40e_pf *pf);
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int i40e_pci_sriov_configure(struct pci_dev *dev, int num_vfs);
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int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs);
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int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
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u32 v_retval, u8 *msg, u16 msglen);
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int i40e_vc_process_vflr_event(struct i40e_pf *pf);
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bool i40e_reset_vf(struct i40e_vf *vf, bool flr);
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bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr);
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void i40e_vc_notify_vf_reset(struct i40e_vf *vf);
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/* VF configuration related iplink handlers */
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int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac);
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int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
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u16 vlan_id, u8 qos, __be16 vlan_proto);
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int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
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int max_tx_rate);
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int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting);
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int i40e_ndo_get_vf_config(struct net_device *netdev,
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int vf_id, struct ifla_vf_info *ivi);
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int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link);
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int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable);
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void i40e_vc_notify_link_state(struct i40e_pf *pf);
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void i40e_vc_notify_reset(struct i40e_pf *pf);
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#endif /* _I40E_VIRTCHNL_PF_H_ */
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