14 #define DRV_SUMMARY	"Intel(R) Ethernet Switch Host Interface Driver"
181  * Synchronizes page for reuse by the interface
249  * true if the buffer can be reused by the interface.
637 	struct fm10k_intfc *interface = netdev_priv(skb->dev);  in fm10k_port_is_vxlan()  local
639 	if (interface->vxlan_port != udp_hdr(skb)->dest)  in fm10k_port_is_vxlan()
1115 	struct fm10k_intfc *interface = ring->q_vector->interface;  in fm10k_get_tx_pending()  local
1116 	struct fm10k_hw *hw = &interface->hw;  in fm10k_get_tx_pending()
1161  * @interface: driver private struct
1163 void fm10k_tx_timeout_reset(struct fm10k_intfc *interface)  in fm10k_tx_timeout_reset()  argument
1166 	if (!test_bit(__FM10K_DOWN, interface->state)) {  in fm10k_tx_timeout_reset()
1167 		interface->tx_timeout_count++;  in fm10k_tx_timeout_reset()
1168 		set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags);  in fm10k_tx_timeout_reset()
1169 		fm10k_service_event_schedule(interface);  in fm10k_tx_timeout_reset()
1182 	struct fm10k_intfc *interface = q_vector->interface;  in fm10k_clean_tx_irq()  local
1189 	if (test_bit(__FM10K_DOWN, interface->state))  in fm10k_clean_tx_irq()
1279 		struct fm10k_hw *hw = &interface->hw;  in fm10k_clean_tx_irq()
1281 		netif_err(interface, drv, tx_ring->netdev,  in fm10k_clean_tx_irq()
1295 		netif_info(interface, probe, tx_ring->netdev,  in fm10k_clean_tx_irq()
1296 			   "tx hang %d detected on queue %d, resetting interface\n",  in fm10k_clean_tx_irq()
1297 			   interface->tx_timeout_count + 1,  in fm10k_clean_tx_irq()
1300 		fm10k_tx_timeout_reset(interface);  in fm10k_clean_tx_irq()
1319 		    !test_bit(__FM10K_DOWN, interface->state)) {  in fm10k_clean_tx_irq()
1469  * @interface: board private structure to initialize
1478 static bool fm10k_set_qos_queues(struct fm10k_intfc *interface)  in fm10k_set_qos_queues()  argument
1480 	struct net_device *dev = interface->netdev;  in fm10k_set_qos_queues()
1492 	f = &interface->ring_feature[RING_F_QOS];  in fm10k_set_qos_queues()
1497 	rss_i = interface->hw.mac.max_queues / pcs;  in fm10k_set_qos_queues()
1501 	f = &interface->ring_feature[RING_F_RSS];  in fm10k_set_qos_queues()
1510 	interface->num_rx_queues = rss_i * pcs;  in fm10k_set_qos_queues()
1511 	interface->num_tx_queues = rss_i * pcs;  in fm10k_set_qos_queues()
1518  * @interface: board private structure to initialize
1524 static bool fm10k_set_rss_queues(struct fm10k_intfc *interface)  in fm10k_set_rss_queues()  argument
1529 	f = &interface->ring_feature[RING_F_RSS];  in fm10k_set_rss_queues()
1530 	rss_i = min_t(u16, interface->hw.mac.max_queues, f->limit);  in fm10k_set_rss_queues()
1536 	interface->num_rx_queues = rss_i;  in fm10k_set_rss_queues()
1537 	interface->num_tx_queues = rss_i;  in fm10k_set_rss_queues()
1544  * @interface: board private structure to initialize
1553 static void fm10k_set_num_queues(struct fm10k_intfc *interface)  in fm10k_set_num_queues()  argument
1556 	if (fm10k_set_qos_queues(interface))  in fm10k_set_num_queues()
1560 	fm10k_set_rss_queues(interface);  in fm10k_set_num_queues()
1565  * @interface: board private structure
1570 static void fm10k_reset_num_queues(struct fm10k_intfc *interface)  in fm10k_reset_num_queues()  argument
1572 	interface->num_tx_queues = 0;  in fm10k_reset_num_queues()
1573 	interface->num_rx_queues = 0;  in fm10k_reset_num_queues()
1574 	interface->num_q_vectors = 0;  in fm10k_reset_num_queues()
1579  * @interface: board private structure to initialize
1580  * @v_count: q_vectors allocated on interface, used for ring interleaving
1581  * @v_idx: index of vector in interface struct
1589 static int fm10k_alloc_q_vector(struct fm10k_intfc *interface,  in fm10k_alloc_q_vector()  argument
1606 	netif_napi_add(interface->netdev, &q_vector->napi, fm10k_poll);  in fm10k_alloc_q_vector()
1608 	/* tie q_vector and interface together */  in fm10k_alloc_q_vector()
1609 	interface->q_vector[v_idx] = q_vector;  in fm10k_alloc_q_vector()
1610 	q_vector->interface = interface;  in fm10k_alloc_q_vector()
1619 	q_vector->tx.itr = interface->tx_itr;  in fm10k_alloc_q_vector()
1620 	q_vector->tx.itr_scale = interface->hw.mac.itr_scale;  in fm10k_alloc_q_vector()
1625 		ring->dev = &interface->pdev->dev;  in fm10k_alloc_q_vector()
1626 		ring->netdev = interface->netdev;  in fm10k_alloc_q_vector()
1632 		ring->count = interface->tx_ring_count;  in fm10k_alloc_q_vector()
1635 		/* assign ring to interface */  in fm10k_alloc_q_vector()
1636 		interface->tx_ring[txr_idx] = ring;  in fm10k_alloc_q_vector()
1648 	q_vector->rx.itr = interface->rx_itr;  in fm10k_alloc_q_vector()
1649 	q_vector->rx.itr_scale = interface->hw.mac.itr_scale;  in fm10k_alloc_q_vector()
1654 		ring->dev = &interface->pdev->dev;  in fm10k_alloc_q_vector()
1655 		ring->netdev = interface->netdev;  in fm10k_alloc_q_vector()
1656 		rcu_assign_pointer(ring->l2_accel, interface->l2_accel);  in fm10k_alloc_q_vector()
1662 		ring->count = interface->rx_ring_count;  in fm10k_alloc_q_vector()
1665 		/* assign ring to interface */  in fm10k_alloc_q_vector()
1666 		interface->rx_ring[rxr_idx] = ring;  in fm10k_alloc_q_vector()
1683  * @interface: board private structure to initialize
1690 static void fm10k_free_q_vector(struct fm10k_intfc *interface, int v_idx)  in fm10k_free_q_vector()  argument
1692 	struct fm10k_q_vector *q_vector = interface->q_vector[v_idx];  in fm10k_free_q_vector()
1698 		interface->tx_ring[ring->queue_index] = NULL;  in fm10k_free_q_vector()
1701 		interface->rx_ring[ring->queue_index] = NULL;  in fm10k_free_q_vector()
1703 	interface->q_vector[v_idx] = NULL;  in fm10k_free_q_vector()
1710  * @interface: board private structure to initialize
1715 static int fm10k_alloc_q_vectors(struct fm10k_intfc *interface)  in fm10k_alloc_q_vectors()  argument
1717 	unsigned int q_vectors = interface->num_q_vectors;  in fm10k_alloc_q_vectors()
1718 	unsigned int rxr_remaining = interface->num_rx_queues;  in fm10k_alloc_q_vectors()
1719 	unsigned int txr_remaining = interface->num_tx_queues;  in fm10k_alloc_q_vectors()
1725 			err = fm10k_alloc_q_vector(interface, q_vectors, v_idx,  in fm10k_alloc_q_vectors()
1740 		err = fm10k_alloc_q_vector(interface, q_vectors, v_idx,  in fm10k_alloc_q_vectors()
1757 	fm10k_reset_num_queues(interface);  in fm10k_alloc_q_vectors()
1760 		fm10k_free_q_vector(interface, v_idx);  in fm10k_alloc_q_vectors()
1767  * @interface: board private structure to initialize
1773 static void fm10k_free_q_vectors(struct fm10k_intfc *interface)  in fm10k_free_q_vectors()  argument
1775 	int v_idx = interface->num_q_vectors;  in fm10k_free_q_vectors()
1777 	fm10k_reset_num_queues(interface);  in fm10k_free_q_vectors()
1780 		fm10k_free_q_vector(interface, v_idx);  in fm10k_free_q_vectors()
1785  * @interface: board private structure to initialize
1789 static void fm10k_reset_msix_capability(struct fm10k_intfc *interface)  in fm10k_reset_msix_capability()  argument
1791 	pci_disable_msix(interface->pdev);  in fm10k_reset_msix_capability()
1792 	kfree(interface->msix_entries);  in fm10k_reset_msix_capability()
1793 	interface->msix_entries = NULL;  in fm10k_reset_msix_capability()
1798  * @interface: board private structure to initialize
1803 static int fm10k_init_msix_capability(struct fm10k_intfc *interface)  in fm10k_init_msix_capability()  argument
1805 	struct fm10k_hw *hw = &interface->hw;  in fm10k_init_msix_capability()
1814 	v_budget = max(interface->num_rx_queues, interface->num_tx_queues);  in fm10k_init_msix_capability()
1829 	interface->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),  in fm10k_init_msix_capability()
1831 	if (!interface->msix_entries)  in fm10k_init_msix_capability()
1836 		interface->msix_entries[vector].entry = vector;  in fm10k_init_msix_capability()
1839 	v_budget = pci_enable_msix_range(interface->pdev,  in fm10k_init_msix_capability()
1840 					 interface->msix_entries,  in fm10k_init_msix_capability()
1844 		kfree(interface->msix_entries);  in fm10k_init_msix_capability()
1845 		interface->msix_entries = NULL;  in fm10k_init_msix_capability()
1850 	interface->num_q_vectors = v_budget - NON_Q_VECTORS;  in fm10k_init_msix_capability()
1857  * @interface: Interface structure continaining rings and devices
1861 static bool fm10k_cache_ring_qos(struct fm10k_intfc *interface)  in fm10k_cache_ring_qos()  argument
1863 	struct net_device *dev = interface->netdev;  in fm10k_cache_ring_qos()
1865 	u16 pc_stride = interface->ring_feature[RING_F_QOS].mask + 1;  in fm10k_cache_ring_qos()
1871 	rss_i = interface->ring_feature[RING_F_RSS].indices;  in fm10k_cache_ring_qos()
1877 			interface->tx_ring[offset + i]->reg_idx = q_idx;  in fm10k_cache_ring_qos()
1878 			interface->tx_ring[offset + i]->qos_pc = pc;  in fm10k_cache_ring_qos()
1879 			interface->rx_ring[offset + i]->reg_idx = q_idx;  in fm10k_cache_ring_qos()
1880 			interface->rx_ring[offset + i]->qos_pc = pc;  in fm10k_cache_ring_qos()
1890  * @interface: Interface structure continaining rings and devices
1894 static void fm10k_cache_ring_rss(struct fm10k_intfc *interface)  in fm10k_cache_ring_rss()  argument
1898 	for (i = 0; i < interface->num_rx_queues; i++)  in fm10k_cache_ring_rss()
1899 		interface->rx_ring[i]->reg_idx = i;  in fm10k_cache_ring_rss()
1901 	for (i = 0; i < interface->num_tx_queues; i++)  in fm10k_cache_ring_rss()
1902 		interface->tx_ring[i]->reg_idx = i;  in fm10k_cache_ring_rss()
1907  * @interface: Interface structure containing rings and devices
1913 static void fm10k_assign_rings(struct fm10k_intfc *interface)  in fm10k_assign_rings()  argument
1915 	if (fm10k_cache_ring_qos(interface))  in fm10k_assign_rings()
1918 	fm10k_cache_ring_rss(interface);  in fm10k_assign_rings()
1921 static void fm10k_init_reta(struct fm10k_intfc *interface)  in fm10k_init_reta()  argument
1923 	u16 i, rss_i = interface->ring_feature[RING_F_RSS].indices;  in fm10k_init_reta()
1929 	if (netif_is_rxfh_configured(interface->netdev)) {  in fm10k_init_reta()
1931 			reta = interface->reta[i];  in fm10k_init_reta()
1939 			dev_err(&interface->pdev->dev,  in fm10k_init_reta()
1949 	fm10k_write_reta(interface, NULL);  in fm10k_init_reta()
1954  * @interface: board private structure to initialize
1960 int fm10k_init_queueing_scheme(struct fm10k_intfc *interface)  in fm10k_init_queueing_scheme()  argument
1965 	fm10k_set_num_queues(interface);  in fm10k_init_queueing_scheme()
1968 	err = fm10k_init_msix_capability(interface);  in fm10k_init_queueing_scheme()
1970 		dev_err(&interface->pdev->dev,  in fm10k_init_queueing_scheme()
1976 	err = fm10k_alloc_q_vectors(interface);  in fm10k_init_queueing_scheme()
1978 		dev_err(&interface->pdev->dev,  in fm10k_init_queueing_scheme()
1984 	fm10k_assign_rings(interface);  in fm10k_init_queueing_scheme()
1987 	fm10k_init_reta(interface);  in fm10k_init_queueing_scheme()
1992 	fm10k_reset_msix_capability(interface);  in fm10k_init_queueing_scheme()
1994 	fm10k_reset_num_queues(interface);  in fm10k_init_queueing_scheme()
2000  * @interface: board private structure to clear queueing scheme on
2005 void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface)  in fm10k_clear_queueing_scheme()  argument
2007 	fm10k_free_q_vectors(interface);  in fm10k_clear_queueing_scheme()
2008 	fm10k_reset_msix_capability(interface);  in fm10k_clear_queueing_scheme()