1 files changed, 293 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
new file mode 100644
index 000000000000..52bd9a3816bf
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
@@ -0,0 +1,293 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2018-2021, Intel Corporation. */
+
+#ifndef _ICE_VF_LIB_H_
+#define _ICE_VF_LIB_H_
+
+#include <linux/types.h>
+#include <linux/hashtable.h>
+#include <linux/bitmap.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <net/devlink.h>
+#include <linux/avf/virtchnl.h>
+#include "ice_type.h"
+#include "ice_virtchnl_fdir.h"
+#include "ice_vsi_vlan_ops.h"
+
+#define ICE_MAX_SRIOV_VFS		256
+
+/* VF resource constraints */
+#define ICE_MAX_RSS_QS_PER_VF	16
+
+struct ice_pf;
+struct ice_vf;
+struct ice_virtchnl_ops;
+
+/* VF capabilities */
+enum ice_virtchnl_cap {
+	ICE_VIRTCHNL_VF_CAP_PRIVILEGE = 0,
+};
+
+/* Specific VF states */
+enum ice_vf_states {
+	ICE_VF_STATE_INIT = 0,		/* PF is initializing VF */
+	ICE_VF_STATE_ACTIVE,		/* VF resources are allocated for use */
+	ICE_VF_STATE_QS_ENA,		/* VF queue(s) enabled */
+	ICE_VF_STATE_DIS,
+	ICE_VF_STATE_MC_PROMISC,
+	ICE_VF_STATE_UC_PROMISC,
+	ICE_VF_STATES_NBITS
+};
+
+struct ice_time_mac {
+	unsigned long time_modified;
+	u8 addr[ETH_ALEN];
+};
+
+/* VF MDD events print structure */
+struct ice_mdd_vf_events {
+	u16 count;			/* total count of Rx|Tx events */
+	/* count number of the last printed event */
+	u16 last_printed;
+};
+
+/* VF operations */
+struct ice_vf_ops {
+	enum ice_disq_rst_src reset_type;
+	void (*free)(struct ice_vf *vf);
+	void (*clear_mbx_register)(struct ice_vf *vf);
+	void (*trigger_reset_register)(struct ice_vf *vf, bool is_vflr);
+	bool (*poll_reset_status)(struct ice_vf *vf);
+	void (*clear_reset_trigger)(struct ice_vf *vf);
+	int (*vsi_rebuild)(struct ice_vf *vf);
+	void (*post_vsi_rebuild)(struct ice_vf *vf);
+};
+
+/* Virtchnl/SR-IOV config info */
+struct ice_vfs {
+	DECLARE_HASHTABLE(table, 8);	/* table of VF entries */
+	struct mutex table_lock;	/* Lock for protecting the hash table */
+	u16 num_supported;		/* max supported VFs on this PF */
+	u16 num_qps_per;		/* number of queue pairs per VF */
+	u16 num_msix_per;		/* number of MSI-X vectors per VF */
+	unsigned long last_printed_mdd_jiffies;	/* MDD message rate limit */
+	DECLARE_BITMAP(malvfs, ICE_MAX_SRIOV_VFS); /* malicious VF indicator */
+};
+
+/* VF information structure */
+struct ice_vf {
+	struct hlist_node entry;
+	struct rcu_head rcu;
+	struct kref refcnt;
+	struct ice_pf *pf;
+
+	/* Used during virtchnl message handling and NDO ops against the VF
+	 * that will trigger a VFR
+	 */
+	struct mutex cfg_lock;
+
+	u16 vf_id;			/* VF ID in the PF space */
+	u16 lan_vsi_idx;		/* index into PF struct */
+	u16 ctrl_vsi_idx;
+	struct ice_vf_fdir fdir;
+	/* first vector index of this VF in the PF space */
+	int first_vector_idx;
+	struct ice_sw *vf_sw_id;	/* switch ID the VF VSIs connect to */
+	struct virtchnl_version_info vf_ver;
+	u32 driver_caps;		/* reported by VF driver */
+	struct virtchnl_ether_addr dev_lan_addr;
+	struct virtchnl_ether_addr hw_lan_addr;
+	struct ice_time_mac legacy_last_added_umac;
+	DECLARE_BITMAP(txq_ena, ICE_MAX_RSS_QS_PER_VF);
+	DECLARE_BITMAP(rxq_ena, ICE_MAX_RSS_QS_PER_VF);
+	struct ice_vlan port_vlan_info;	/* Port VLAN ID, QoS, and TPID */
+	struct virtchnl_vlan_caps vlan_v2_caps;
+	u8 pf_set_mac:1;		/* VF MAC address set by VMM admin */
+	u8 trusted:1;
+	u8 spoofchk:1;
+	u8 link_forced:1;
+	u8 link_up:1;			/* only valid if VF link is forced */
+	/* VSI indices - actual VSI pointers are maintained in the PF structure
+	 * When assigned, these will be non-zero, because VSI 0 is always
+	 * the main LAN VSI for the PF.
+	 */
+	u16 lan_vsi_num;		/* ID as used by firmware */
+	unsigned int min_tx_rate;	/* Minimum Tx bandwidth limit in Mbps */
+	unsigned int max_tx_rate;	/* Maximum Tx bandwidth limit in Mbps */
+	DECLARE_BITMAP(vf_states, ICE_VF_STATES_NBITS);	/* VF runtime states */
+
+	unsigned long vf_caps;		/* VF's adv. capabilities */
+	u8 num_req_qs;			/* num of queue pairs requested by VF */
+	u16 num_mac;
+	u16 num_vf_qs;			/* num of queue configured per VF */
+	struct ice_mdd_vf_events mdd_rx_events;
+	struct ice_mdd_vf_events mdd_tx_events;
+	DECLARE_BITMAP(opcodes_allowlist, VIRTCHNL_OP_MAX);
+
+	struct ice_repr *repr;
+	const struct ice_virtchnl_ops *virtchnl_ops;
+	const struct ice_vf_ops *vf_ops;
+
+	/* devlink port data */
+	struct devlink_port devlink_port;
+};
+
+/* Flags for controlling behavior of ice_reset_vf */
+enum ice_vf_reset_flags {
+	ICE_VF_RESET_VFLR = BIT(0), /* Indicate a VFLR reset */
+	ICE_VF_RESET_NOTIFY = BIT(1), /* Notify VF prior to reset */
+	ICE_VF_RESET_LOCK = BIT(2), /* Acquire the VF cfg_lock */
+};
+
+static inline u16 ice_vf_get_port_vlan_id(struct ice_vf *vf)
+{
+	return vf->port_vlan_info.vid;
+}
+
+static inline u8 ice_vf_get_port_vlan_prio(struct ice_vf *vf)
+{
+	return vf->port_vlan_info.prio;
+}
+
+static inline bool ice_vf_is_port_vlan_ena(struct ice_vf *vf)
+{
+	return (ice_vf_get_port_vlan_id(vf) || ice_vf_get_port_vlan_prio(vf));
+}
+
+static inline u16 ice_vf_get_port_vlan_tpid(struct ice_vf *vf)
+{
+	return vf->port_vlan_info.tpid;
+}
+
+/* VF Hash Table access functions
+ *
+ * These functions provide abstraction for interacting with the VF hash table.
+ * In general, direct access to the hash table should be avoided outside of
+ * these functions where possible.
+ *
+ * The VF entries in the hash table are protected by reference counting to
+ * track lifetime of accesses from the table. The ice_get_vf_by_id() function
+ * obtains a reference to the VF structure which must be dropped by using
+ * ice_put_vf().
+ */
+
+/**
+ * ice_for_each_vf - Iterate over each VF entry
+ * @pf: pointer to the PF private structure
+ * @bkt: bucket index used for iteration
+ * @vf: pointer to the VF entry currently being processed in the loop
+ *
+ * The bkt variable is an unsigned integer iterator used to traverse the VF
+ * entries. It is *not* guaranteed to be the VF's vf_id. Do not assume it is.
+ * Use vf->vf_id to get the id number if needed.
+ *
+ * The caller is expected to be under the table_lock mutex for the entire
+ * loop. Use this iterator if your loop is long or if it might sleep.
+ */
+#define ice_for_each_vf(pf, bkt, vf) \
+	hash_for_each((pf)->vfs.table, (bkt), (vf), entry)
+
+/**
+ * ice_for_each_vf_rcu - Iterate over each VF entry protected by RCU
+ * @pf: pointer to the PF private structure
+ * @bkt: bucket index used for iteration
+ * @vf: pointer to the VF entry currently being processed in the loop
+ *
+ * The bkt variable is an unsigned integer iterator used to traverse the VF
+ * entries. It is *not* guaranteed to be the VF's vf_id. Do not assume it is.
+ * Use vf->vf_id to get the id number if needed.
+ *
+ * The caller is expected to be under rcu_read_lock() for the entire loop.
+ * Only use this iterator if your loop is short and you can guarantee it does
+ * not sleep.
+ */
+#define ice_for_each_vf_rcu(pf, bkt, vf) \
+	hash_for_each_rcu((pf)->vfs.table, (bkt), (vf), entry)
+
+#ifdef CONFIG_PCI_IOV
+struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id);
+void ice_put_vf(struct ice_vf *vf);
+bool ice_has_vfs(struct ice_pf *pf);
+u16 ice_get_num_vfs(struct ice_pf *pf);
+struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf);
+bool ice_is_vf_disabled(struct ice_vf *vf);
+int ice_check_vf_ready_for_cfg(struct ice_vf *vf);
+void ice_set_vf_state_qs_dis(struct ice_vf *vf);
+bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf);
+void
+ice_vf_get_promisc_masks(struct ice_vf *vf, struct ice_vsi *vsi,
+			 u8 *ucast_m, u8 *mcast_m);
+int
+ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m);
+int
+ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m);
+int ice_reset_vf(struct ice_vf *vf, u32 flags);
+void ice_reset_all_vfs(struct ice_pf *pf);
+#else /* CONFIG_PCI_IOV */
+static inline struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id)
+{
+	return NULL;
+}
+
+static inline void ice_put_vf(struct ice_vf *vf)
+{
+}
+
+static inline bool ice_has_vfs(struct ice_pf *pf)
+{
+	return false;
+}
+
+static inline u16 ice_get_num_vfs(struct ice_pf *pf)
+{
+	return 0;
+}
+
+static inline struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf)
+{
+	return NULL;
+}
+
+static inline bool ice_is_vf_disabled(struct ice_vf *vf)
+{
+	return true;
+}
+
+static inline int ice_check_vf_ready_for_cfg(struct ice_vf *vf)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline void ice_set_vf_state_qs_dis(struct ice_vf *vf)
+{
+}
+
+static inline bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf)
+{
+	return false;
+}
+
+static inline int
+ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int
+ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int ice_reset_vf(struct ice_vf *vf, u32 flags)
+{
+	return 0;
+}
+
+static inline void ice_reset_all_vfs(struct ice_pf *pf)
+{
+}
+#endif /* !CONFIG_PCI_IOV */
+
+#endif /* _ICE_VF_LIB_H_ */