14 #define DRV_SUMMARY	"Intel(R) Ethernet Switch Host Interface Driver"
173  * Synchronizes page for reuse by the interface
241  * true if the buffer can be reused by the interface.
629 	struct fm10k_intfc *interface = netdev_priv(skb->dev);  in fm10k_port_is_vxlan()  local
631 	if (interface->vxlan_port != udp_hdr(skb)->dest)  in fm10k_port_is_vxlan()
1107 	struct fm10k_intfc *interface = ring->q_vector->interface;  in fm10k_get_tx_pending()  local
1108 	struct fm10k_hw *hw = &interface->hw;  in fm10k_get_tx_pending()
1153  * @interface: driver private struct
1155 void fm10k_tx_timeout_reset(struct fm10k_intfc *interface)  in fm10k_tx_timeout_reset()  argument
1158 	if (!test_bit(__FM10K_DOWN, interface->state)) {  in fm10k_tx_timeout_reset()
1159 		interface->tx_timeout_count++;  in fm10k_tx_timeout_reset()
1160 		set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags);  in fm10k_tx_timeout_reset()
1161 		fm10k_service_event_schedule(interface);  in fm10k_tx_timeout_reset()
1174 	struct fm10k_intfc *interface = q_vector->interface;  in fm10k_clean_tx_irq()  local
1181 	if (test_bit(__FM10K_DOWN, interface->state))  in fm10k_clean_tx_irq()
1271 		struct fm10k_hw *hw = &interface->hw;  in fm10k_clean_tx_irq()
1273 		netif_err(interface, drv, tx_ring->netdev,  in fm10k_clean_tx_irq()
1287 		netif_info(interface, probe, tx_ring->netdev,  in fm10k_clean_tx_irq()
1288 			   "tx hang %d detected on queue %d, resetting interface\n",  in fm10k_clean_tx_irq()
1289 			   interface->tx_timeout_count + 1,  in fm10k_clean_tx_irq()
1292 		fm10k_tx_timeout_reset(interface);  in fm10k_clean_tx_irq()
1311 		    !test_bit(__FM10K_DOWN, interface->state)) {  in fm10k_clean_tx_irq()
1461  * @interface: board private structure to initialize
1470 static bool fm10k_set_qos_queues(struct fm10k_intfc *interface)  in fm10k_set_qos_queues()  argument
1472 	struct net_device *dev = interface->netdev;  in fm10k_set_qos_queues()
1484 	f = &interface->ring_feature[RING_F_QOS];  in fm10k_set_qos_queues()
1489 	rss_i = interface->hw.mac.max_queues / pcs;  in fm10k_set_qos_queues()
1493 	f = &interface->ring_feature[RING_F_RSS];  in fm10k_set_qos_queues()
1502 	interface->num_rx_queues = rss_i * pcs;  in fm10k_set_qos_queues()
1503 	interface->num_tx_queues = rss_i * pcs;  in fm10k_set_qos_queues()
1510  * @interface: board private structure to initialize
1516 static bool fm10k_set_rss_queues(struct fm10k_intfc *interface)  in fm10k_set_rss_queues()  argument
1521 	f = &interface->ring_feature[RING_F_RSS];  in fm10k_set_rss_queues()
1522 	rss_i = min_t(u16, interface->hw.mac.max_queues, f->limit);  in fm10k_set_rss_queues()
1528 	interface->num_rx_queues = rss_i;  in fm10k_set_rss_queues()
1529 	interface->num_tx_queues = rss_i;  in fm10k_set_rss_queues()
1536  * @interface: board private structure to initialize
1545 static void fm10k_set_num_queues(struct fm10k_intfc *interface)  in fm10k_set_num_queues()  argument
1548 	if (fm10k_set_qos_queues(interface))  in fm10k_set_num_queues()
1552 	fm10k_set_rss_queues(interface);  in fm10k_set_num_queues()
1557  * @interface: board private structure
1562 static void fm10k_reset_num_queues(struct fm10k_intfc *interface)  in fm10k_reset_num_queues()  argument
1564 	interface->num_tx_queues = 0;  in fm10k_reset_num_queues()
1565 	interface->num_rx_queues = 0;  in fm10k_reset_num_queues()
1566 	interface->num_q_vectors = 0;  in fm10k_reset_num_queues()
1571  * @interface: board private structure to initialize
1572  * @v_count: q_vectors allocated on interface, used for ring interleaving
1573  * @v_idx: index of vector in interface struct
1581 static int fm10k_alloc_q_vector(struct fm10k_intfc *interface,  in fm10k_alloc_q_vector()  argument
1598 	netif_napi_add(interface->netdev, &q_vector->napi,  in fm10k_alloc_q_vector()
1601 	/* tie q_vector and interface together */  in fm10k_alloc_q_vector()
1602 	interface->q_vector[v_idx] = q_vector;  in fm10k_alloc_q_vector()
1603 	q_vector->interface = interface;  in fm10k_alloc_q_vector()
1612 	q_vector->tx.itr = interface->tx_itr;  in fm10k_alloc_q_vector()
1613 	q_vector->tx.itr_scale = interface->hw.mac.itr_scale;  in fm10k_alloc_q_vector()
1618 		ring->dev = &interface->pdev->dev;  in fm10k_alloc_q_vector()
1619 		ring->netdev = interface->netdev;  in fm10k_alloc_q_vector()
1625 		ring->count = interface->tx_ring_count;  in fm10k_alloc_q_vector()
1628 		/* assign ring to interface */  in fm10k_alloc_q_vector()
1629 		interface->tx_ring[txr_idx] = ring;  in fm10k_alloc_q_vector()
1641 	q_vector->rx.itr = interface->rx_itr;  in fm10k_alloc_q_vector()
1642 	q_vector->rx.itr_scale = interface->hw.mac.itr_scale;  in fm10k_alloc_q_vector()
1647 		ring->dev = &interface->pdev->dev;  in fm10k_alloc_q_vector()
1648 		ring->netdev = interface->netdev;  in fm10k_alloc_q_vector()
1649 		rcu_assign_pointer(ring->l2_accel, interface->l2_accel);  in fm10k_alloc_q_vector()
1655 		ring->count = interface->rx_ring_count;  in fm10k_alloc_q_vector()
1658 		/* assign ring to interface */  in fm10k_alloc_q_vector()
1659 		interface->rx_ring[rxr_idx] = ring;  in fm10k_alloc_q_vector()
1676  * @interface: board private structure to initialize
1683 static void fm10k_free_q_vector(struct fm10k_intfc *interface, int v_idx)  in fm10k_free_q_vector()  argument
1685 	struct fm10k_q_vector *q_vector = interface->q_vector[v_idx];  in fm10k_free_q_vector()
1691 		interface->tx_ring[ring->queue_index] = NULL;  in fm10k_free_q_vector()
1694 		interface->rx_ring[ring->queue_index] = NULL;  in fm10k_free_q_vector()
1696 	interface->q_vector[v_idx] = NULL;  in fm10k_free_q_vector()
1703  * @interface: board private structure to initialize
1708 static int fm10k_alloc_q_vectors(struct fm10k_intfc *interface)  in fm10k_alloc_q_vectors()  argument
1710 	unsigned int q_vectors = interface->num_q_vectors;  in fm10k_alloc_q_vectors()
1711 	unsigned int rxr_remaining = interface->num_rx_queues;  in fm10k_alloc_q_vectors()
1712 	unsigned int txr_remaining = interface->num_tx_queues;  in fm10k_alloc_q_vectors()
1718 			err = fm10k_alloc_q_vector(interface, q_vectors, v_idx,  in fm10k_alloc_q_vectors()
1733 		err = fm10k_alloc_q_vector(interface, q_vectors, v_idx,  in fm10k_alloc_q_vectors()
1750 	fm10k_reset_num_queues(interface);  in fm10k_alloc_q_vectors()
1753 		fm10k_free_q_vector(interface, v_idx);  in fm10k_alloc_q_vectors()
1760  * @interface: board private structure to initialize
1766 static void fm10k_free_q_vectors(struct fm10k_intfc *interface)  in fm10k_free_q_vectors()  argument
1768 	int v_idx = interface->num_q_vectors;  in fm10k_free_q_vectors()
1770 	fm10k_reset_num_queues(interface);  in fm10k_free_q_vectors()
1773 		fm10k_free_q_vector(interface, v_idx);  in fm10k_free_q_vectors()
1778  * @interface: board private structure to initialize
1782 static void fm10k_reset_msix_capability(struct fm10k_intfc *interface)  in fm10k_reset_msix_capability()  argument
1784 	pci_disable_msix(interface->pdev);  in fm10k_reset_msix_capability()
1785 	kfree(interface->msix_entries);  in fm10k_reset_msix_capability()
1786 	interface->msix_entries = NULL;  in fm10k_reset_msix_capability()
1791  * @interface: board private structure to initialize
1796 static int fm10k_init_msix_capability(struct fm10k_intfc *interface)  in fm10k_init_msix_capability()  argument
1798 	struct fm10k_hw *hw = &interface->hw;  in fm10k_init_msix_capability()
1807 	v_budget = max(interface->num_rx_queues, interface->num_tx_queues);  in fm10k_init_msix_capability()
1822 	interface->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),  in fm10k_init_msix_capability()
1824 	if (!interface->msix_entries)  in fm10k_init_msix_capability()
1829 		interface->msix_entries[vector].entry = vector;  in fm10k_init_msix_capability()
1832 	v_budget = pci_enable_msix_range(interface->pdev,  in fm10k_init_msix_capability()
1833 					 interface->msix_entries,  in fm10k_init_msix_capability()
1837 		kfree(interface->msix_entries);  in fm10k_init_msix_capability()
1838 		interface->msix_entries = NULL;  in fm10k_init_msix_capability()
1843 	interface->num_q_vectors = v_budget - NON_Q_VECTORS;  in fm10k_init_msix_capability()
1850  * @interface: Interface structure continaining rings and devices
1854 static bool fm10k_cache_ring_qos(struct fm10k_intfc *interface)  in fm10k_cache_ring_qos()  argument
1856 	struct net_device *dev = interface->netdev;  in fm10k_cache_ring_qos()
1858 	u16 pc_stride = interface->ring_feature[RING_F_QOS].mask + 1;  in fm10k_cache_ring_qos()
1864 	rss_i = interface->ring_feature[RING_F_RSS].indices;  in fm10k_cache_ring_qos()
1870 			interface->tx_ring[offset + i]->reg_idx = q_idx;  in fm10k_cache_ring_qos()
1871 			interface->tx_ring[offset + i]->qos_pc = pc;  in fm10k_cache_ring_qos()
1872 			interface->rx_ring[offset + i]->reg_idx = q_idx;  in fm10k_cache_ring_qos()
1873 			interface->rx_ring[offset + i]->qos_pc = pc;  in fm10k_cache_ring_qos()
1883  * @interface: Interface structure continaining rings and devices
1887 static void fm10k_cache_ring_rss(struct fm10k_intfc *interface)  in fm10k_cache_ring_rss()  argument
1891 	for (i = 0; i < interface->num_rx_queues; i++)  in fm10k_cache_ring_rss()
1892 		interface->rx_ring[i]->reg_idx = i;  in fm10k_cache_ring_rss()
1894 	for (i = 0; i < interface->num_tx_queues; i++)  in fm10k_cache_ring_rss()
1895 		interface->tx_ring[i]->reg_idx = i;  in fm10k_cache_ring_rss()
1900  * @interface: Interface structure containing rings and devices
1906 static void fm10k_assign_rings(struct fm10k_intfc *interface)  in fm10k_assign_rings()  argument
1908 	if (fm10k_cache_ring_qos(interface))  in fm10k_assign_rings()
1911 	fm10k_cache_ring_rss(interface);  in fm10k_assign_rings()
1914 static void fm10k_init_reta(struct fm10k_intfc *interface)  in fm10k_init_reta()  argument
1916 	u16 i, rss_i = interface->ring_feature[RING_F_RSS].indices;  in fm10k_init_reta()
1922 	if (netif_is_rxfh_configured(interface->netdev)) {  in fm10k_init_reta()
1924 			reta = interface->reta[i];  in fm10k_init_reta()
1932 			dev_err(&interface->pdev->dev,  in fm10k_init_reta()
1942 	fm10k_write_reta(interface, NULL);  in fm10k_init_reta()
1947  * @interface: board private structure to initialize
1953 int fm10k_init_queueing_scheme(struct fm10k_intfc *interface)  in fm10k_init_queueing_scheme()  argument
1958 	fm10k_set_num_queues(interface);  in fm10k_init_queueing_scheme()
1961 	err = fm10k_init_msix_capability(interface);  in fm10k_init_queueing_scheme()
1963 		dev_err(&interface->pdev->dev,  in fm10k_init_queueing_scheme()
1969 	err = fm10k_alloc_q_vectors(interface);  in fm10k_init_queueing_scheme()
1971 		dev_err(&interface->pdev->dev,  in fm10k_init_queueing_scheme()
1977 	fm10k_assign_rings(interface);  in fm10k_init_queueing_scheme()
1980 	fm10k_init_reta(interface);  in fm10k_init_queueing_scheme()
1985 	fm10k_reset_msix_capability(interface);  in fm10k_init_queueing_scheme()
1987 	fm10k_reset_num_queues(interface);  in fm10k_init_queueing_scheme()
1993  * @interface: board private structure to clear queueing scheme on
1998 void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface)  in fm10k_clear_queueing_scheme()  argument
2000 	fm10k_free_q_vectors(interface);  in fm10k_clear_queueing_scheme()
2001 	fm10k_reset_msix_capability(interface);  in fm10k_clear_queueing_scheme()