idpf: add SRIOV support and other ndo_ops

Add support for SRIOV: send the requested number of VFs
to the device Control Plane, via the virtchnl message
and then enable the VFs using 'pci_enable_sriov'.

Add other ndo ops supported by the driver such as features_check,
set_rx_mode, validate_addr, set_mac_address, change_mtu, get_stats64,
set_features, and tx_timeout. Initialize the statistics task which
requests the queue related statistics to the CP. Add loopback
and promiscuous mode support and the respective virtchnl messages.

Finally, add documentation and build support for the driver.

Signed-off-by: Joshua Hay <joshua.a.hay@intel.com>
Co-developed-by: Alan Brady <alan.brady@intel.com>
Signed-off-by: Alan Brady <alan.brady@intel.com>
Co-developed-by: Madhu Chittim <madhu.chittim@intel.com>
Signed-off-by: Madhu Chittim <madhu.chittim@intel.com>
Co-developed-by: Phani Burra <phani.r.burra@intel.com>
Signed-off-by: Phani Burra <phani.r.burra@intel.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Co-developed-by: Pavan Kumar Linga <pavan.kumar.linga@intel.com>
Signed-off-by: Pavan Kumar Linga <pavan.kumar.linga@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h
index e016a7db6b73..bee73353b56a 100644
--- a/drivers/net/ethernet/intel/idpf/idpf.h
+++ b/drivers/net/ethernet/intel/idpf/idpf.h
@@ -147,6 +147,8 @@ enum idpf_vport_state {
  * @vport_id: Vport identifier
  * @vport_idx: Relative vport index
  * @state: See enum idpf_vport_state
+ * @netstats: Packet and byte stats
+ * @stats_lock: Lock to protect stats update
  */
 struct idpf_netdev_priv {
 	struct idpf_adapter *adapter;
@@ -154,6 +156,8 @@ struct idpf_netdev_priv {
 	u32 vport_id;
 	u16 vport_idx;
 	enum idpf_vport_state state;
+	struct rtnl_link_stats64 netstats;
+	spinlock_t stats_lock;
 };
 
 /**
@@ -239,6 +243,8 @@ struct idpf_dev_ops {
 	STATE(IDPF_VC_ALLOC_VECTORS_ERR)	\
 	STATE(IDPF_VC_DEALLOC_VECTORS)		\
 	STATE(IDPF_VC_DEALLOC_VECTORS_ERR)	\
+	STATE(IDPF_VC_SET_SRIOV_VFS)		\
+	STATE(IDPF_VC_SET_SRIOV_VFS_ERR)	\
 	STATE(IDPF_VC_GET_RSS_LUT)		\
 	STATE(IDPF_VC_GET_RSS_LUT_ERR)		\
 	STATE(IDPF_VC_SET_RSS_LUT)		\
@@ -247,12 +253,16 @@ struct idpf_dev_ops {
 	STATE(IDPF_VC_GET_RSS_KEY_ERR)		\
 	STATE(IDPF_VC_SET_RSS_KEY)		\
 	STATE(IDPF_VC_SET_RSS_KEY_ERR)		\
+	STATE(IDPF_VC_GET_STATS)		\
+	STATE(IDPF_VC_GET_STATS_ERR)		\
 	STATE(IDPF_VC_ADD_MAC_ADDR)		\
 	STATE(IDPF_VC_ADD_MAC_ADDR_ERR)		\
 	STATE(IDPF_VC_DEL_MAC_ADDR)		\
 	STATE(IDPF_VC_DEL_MAC_ADDR_ERR)		\
 	STATE(IDPF_VC_GET_PTYPE_INFO)		\
 	STATE(IDPF_VC_GET_PTYPE_INFO_ERR)	\
+	STATE(IDPF_VC_LOOPBACK_STATE)		\
+	STATE(IDPF_VC_LOOPBACK_STATE_ERR)	\
 	STATE(IDPF_VC_NBITS)
 
 #define IDPF_GEN_ENUM(ENUM) ENUM,
@@ -268,10 +278,14 @@ extern const char * const idpf_vport_vc_state_str[];
  * enum idpf_vport_reset_cause - Vport soft reset causes
  * @IDPF_SR_Q_CHANGE: Soft reset queue change
  * @IDPF_SR_Q_DESC_CHANGE: Soft reset descriptor change
+ * @IDPF_SR_MTU_CHANGE: Soft reset MTU change
+ * @IDPF_SR_RSC_CHANGE: Soft reset RSC change
  */
 enum idpf_vport_reset_cause {
 	IDPF_SR_Q_CHANGE,
 	IDPF_SR_Q_DESC_CHANGE,
+	IDPF_SR_MTU_CHANGE,
+	IDPF_SR_RSC_CHANGE,
 };
 
 /**
@@ -403,6 +417,19 @@ struct idpf_vport {
 };
 
 /**
+ * enum idpf_user_flags
+ * @__IDPF_PROMISC_UC: Unicast promiscuous mode
+ * @__IDPF_PROMISC_MC: Multicast promiscuous mode
+ * @__IDPF_USER_FLAGS_NBITS: Must be last
+ */
+enum idpf_user_flags {
+	__IDPF_PROMISC_UC = 32,
+	__IDPF_PROMISC_MC,
+
+	__IDPF_USER_FLAGS_NBITS,
+};
+
+/**
  * struct idpf_rss_data - Associated RSS data
  * @rss_key_size: Size of RSS hash key
  * @rss_key: RSS hash key
@@ -428,6 +455,7 @@ struct idpf_rss_data {
  *		      ethtool
  * @num_req_rxq_desc: Number of user requested RX queue descriptors through
  *		      ethtool
+ * @user_flags: User toggled config flags
  * @mac_filter_list: List of MAC filters
  *
  * Used to restore configuration after a reset as the vport will get wiped.
@@ -438,6 +466,7 @@ struct idpf_vport_user_config_data {
 	u16 num_req_rx_qs;
 	u32 num_req_txq_desc;
 	u32 num_req_rxq_desc;
+	DECLARE_BITMAP(user_flags, __IDPF_USER_FLAGS_NBITS);
 	struct list_head mac_filter_list;
 };
 
@@ -548,6 +577,7 @@ struct idpf_vport_config {
  * @mb_vector: Mailbox vector data
  * @vector_stack: Stack to store the msix vector indexes
  * @irq_mb_handler: Handler for hard interrupt for mailbox
+ * @tx_timeout_count: Number of TX timeouts that have occurred
  * @avail_queues: Device given queue limits
  * @vports: Array to store vports created by the driver
  * @netdevs: Associated Vport netdevs
@@ -566,6 +596,8 @@ struct idpf_vport_config {
  * @mbx_wq: Workqueue for mailbox responses
  * @vc_event_task: Task to handle out of band virtchnl event notifications
  * @vc_event_wq: Workqueue for virtchnl events
+ * @stats_task: Periodic statistics retrieval task
+ * @stats_wq: Workqueue for statistics task
  * @caps: Negotiated capabilities with device
  * @vchnl_wq: Wait queue for virtchnl messages
  * @vc_state: Virtchnl message state
@@ -601,6 +633,7 @@ struct idpf_adapter {
 	struct idpf_vector_lifo vector_stack;
 	irqreturn_t (*irq_mb_handler)(int irq, void *data);
 
+	u32 tx_timeout_count;
 	struct idpf_avail_queue_info avail_queues;
 	struct idpf_vport **vports;
 	struct net_device **netdevs;
@@ -621,6 +654,8 @@ struct idpf_adapter {
 	struct workqueue_struct *mbx_wq;
 	struct delayed_work vc_event_task;
 	struct workqueue_struct *vc_event_wq;
+	struct delayed_work stats_task;
+	struct workqueue_struct *stats_wq;
 	struct virtchnl2_get_capabilities caps;
 
 	wait_queue_head_t vchnl_wq;
@@ -826,6 +861,15 @@ static inline bool idpf_is_feature_ena(const struct idpf_vport *vport,
 }
 
 /**
+ * idpf_get_max_tx_hdr_size -- get the size of tx header
+ * @adapter: Driver specific private structure
+ */
+static inline u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter)
+{
+	return le16_to_cpu(adapter->caps.max_tx_hdr_size);
+}
+
+/**
  * idpf_vport_ctrl_lock - Acquire the vport control lock
  * @netdev: Network interface device structure
  *
@@ -850,6 +894,7 @@ static inline void idpf_vport_ctrl_unlock(struct net_device *netdev)
 	mutex_unlock(&np->adapter->vport_ctrl_lock);
 }
 
+void idpf_statistics_task(struct work_struct *work);
 void idpf_init_task(struct work_struct *work);
 void idpf_service_task(struct work_struct *work);
 void idpf_mbx_task(struct work_struct *work);
@@ -865,6 +910,7 @@ int idpf_intr_req(struct idpf_adapter *adapter);
 void idpf_intr_rel(struct idpf_adapter *adapter);
 int idpf_get_reg_intr_vecs(struct idpf_vport *vport,
 			   struct idpf_vec_regs *reg_vals);
+u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter);
 int idpf_send_delete_queues_msg(struct idpf_vport *vport);
 int idpf_send_add_queues_msg(const struct idpf_vport *vport, u16 num_tx_q,
 			     u16 num_complq, u16 num_rx_q, u16 num_rx_bufq);
@@ -874,6 +920,7 @@ int idpf_send_enable_vport_msg(struct idpf_vport *vport);
 int idpf_send_disable_vport_msg(struct idpf_vport *vport);
 int idpf_send_destroy_vport_msg(struct idpf_vport *vport);
 int idpf_send_get_rx_ptype_msg(struct idpf_vport *vport);
+int idpf_send_ena_dis_loopback_msg(struct idpf_vport *vport);
 int idpf_send_get_set_rss_key_msg(struct idpf_vport *vport, bool get);
 int idpf_send_get_set_rss_lut_msg(struct idpf_vport *vport, bool get);
 int idpf_send_dealloc_vectors_msg(struct idpf_adapter *adapter);
@@ -883,6 +930,7 @@ int idpf_req_rel_vector_indexes(struct idpf_adapter *adapter,
 				u16 *q_vector_idxs,
 				struct idpf_vector_info *vec_info);
 int idpf_vport_alloc_vec_indexes(struct idpf_vport *vport);
+int idpf_send_get_stats_msg(struct idpf_vport *vport);
 int idpf_get_vec_ids(struct idpf_adapter *adapter,
 		     u16 *vecids, int num_vecids,
 		     struct virtchnl2_vector_chunks *chunks);
@@ -898,6 +946,9 @@ void idpf_vport_dealloc_max_qs(struct idpf_adapter *adapter,
 int idpf_add_del_mac_filters(struct idpf_vport *vport,
 			     struct idpf_netdev_priv *np,
 			     bool add, bool async);
+int idpf_set_promiscuous(struct idpf_adapter *adapter,
+			 struct idpf_vport_user_config_data *config_data,
+			 u32 vport_id);
 int idpf_send_disable_queues_msg(struct idpf_vport *vport);
 void idpf_vport_init(struct idpf_vport *vport, struct idpf_vport_max_q *max_q);
 u32 idpf_get_vport_id(struct idpf_vport *vport);