14 #define DRV_SUMMARY	"Intel(R) Ethernet Switch Host Interface Driver"
173  * Synchronizes page for reuse by the interface
246  * true if the buffer can be reused by the interface.
634 	struct fm10k_intfc *interface = netdev_priv(skb->dev);  in fm10k_port_is_vxlan()  local
636 	if (interface->vxlan_port != udp_hdr(skb)->dest)  in fm10k_port_is_vxlan()
1112 	struct fm10k_intfc *interface = ring->q_vector->interface;  in fm10k_get_tx_pending()  local
1113 	struct fm10k_hw *hw = &interface->hw;  in fm10k_get_tx_pending()
1158  * @interface: driver private struct
1160 void fm10k_tx_timeout_reset(struct fm10k_intfc *interface)  in fm10k_tx_timeout_reset()  argument
1163 	if (!test_bit(__FM10K_DOWN, interface->state)) {  in fm10k_tx_timeout_reset()
1164 		interface->tx_timeout_count++;  in fm10k_tx_timeout_reset()
1165 		set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags);  in fm10k_tx_timeout_reset()
1166 		fm10k_service_event_schedule(interface);  in fm10k_tx_timeout_reset()
1179 	struct fm10k_intfc *interface = q_vector->interface;  in fm10k_clean_tx_irq()  local
1186 	if (test_bit(__FM10K_DOWN, interface->state))  in fm10k_clean_tx_irq()
1276 		struct fm10k_hw *hw = &interface->hw;  in fm10k_clean_tx_irq()
1278 		netif_err(interface, drv, tx_ring->netdev,  in fm10k_clean_tx_irq()
1292 		netif_info(interface, probe, tx_ring->netdev,  in fm10k_clean_tx_irq()
1293 			   "tx hang %d detected on queue %d, resetting interface\n",  in fm10k_clean_tx_irq()
1294 			   interface->tx_timeout_count + 1,  in fm10k_clean_tx_irq()
1297 		fm10k_tx_timeout_reset(interface);  in fm10k_clean_tx_irq()
1316 		    !test_bit(__FM10K_DOWN, interface->state)) {  in fm10k_clean_tx_irq()
1466  * @interface: board private structure to initialize
1475 static bool fm10k_set_qos_queues(struct fm10k_intfc *interface)  in fm10k_set_qos_queues()  argument
1477 	struct net_device *dev = interface->netdev;  in fm10k_set_qos_queues()
1489 	f = &interface->ring_feature[RING_F_QOS];  in fm10k_set_qos_queues()
1494 	rss_i = interface->hw.mac.max_queues / pcs;  in fm10k_set_qos_queues()
1498 	f = &interface->ring_feature[RING_F_RSS];  in fm10k_set_qos_queues()
1507 	interface->num_rx_queues = rss_i * pcs;  in fm10k_set_qos_queues()
1508 	interface->num_tx_queues = rss_i * pcs;  in fm10k_set_qos_queues()
1515  * @interface: board private structure to initialize
1521 static bool fm10k_set_rss_queues(struct fm10k_intfc *interface)  in fm10k_set_rss_queues()  argument
1526 	f = &interface->ring_feature[RING_F_RSS];  in fm10k_set_rss_queues()
1527 	rss_i = min_t(u16, interface->hw.mac.max_queues, f->limit);  in fm10k_set_rss_queues()
1533 	interface->num_rx_queues = rss_i;  in fm10k_set_rss_queues()
1534 	interface->num_tx_queues = rss_i;  in fm10k_set_rss_queues()
1541  * @interface: board private structure to initialize
1550 static void fm10k_set_num_queues(struct fm10k_intfc *interface)  in fm10k_set_num_queues()  argument
1553 	if (fm10k_set_qos_queues(interface))  in fm10k_set_num_queues()
1557 	fm10k_set_rss_queues(interface);  in fm10k_set_num_queues()
1562  * @interface: board private structure
1567 static void fm10k_reset_num_queues(struct fm10k_intfc *interface)  in fm10k_reset_num_queues()  argument
1569 	interface->num_tx_queues = 0;  in fm10k_reset_num_queues()
1570 	interface->num_rx_queues = 0;  in fm10k_reset_num_queues()
1571 	interface->num_q_vectors = 0;  in fm10k_reset_num_queues()
1576  * @interface: board private structure to initialize
1577  * @v_count: q_vectors allocated on interface, used for ring interleaving
1578  * @v_idx: index of vector in interface struct
1586 static int fm10k_alloc_q_vector(struct fm10k_intfc *interface,  in fm10k_alloc_q_vector()  argument
1603 	netif_napi_add(interface->netdev, &q_vector->napi,  in fm10k_alloc_q_vector()
1606 	/* tie q_vector and interface together */  in fm10k_alloc_q_vector()
1607 	interface->q_vector[v_idx] = q_vector;  in fm10k_alloc_q_vector()
1608 	q_vector->interface = interface;  in fm10k_alloc_q_vector()
1617 	q_vector->tx.itr = interface->tx_itr;  in fm10k_alloc_q_vector()
1618 	q_vector->tx.itr_scale = interface->hw.mac.itr_scale;  in fm10k_alloc_q_vector()
1623 		ring->dev = &interface->pdev->dev;  in fm10k_alloc_q_vector()
1624 		ring->netdev = interface->netdev;  in fm10k_alloc_q_vector()
1630 		ring->count = interface->tx_ring_count;  in fm10k_alloc_q_vector()
1633 		/* assign ring to interface */  in fm10k_alloc_q_vector()
1634 		interface->tx_ring[txr_idx] = ring;  in fm10k_alloc_q_vector()
1646 	q_vector->rx.itr = interface->rx_itr;  in fm10k_alloc_q_vector()
1647 	q_vector->rx.itr_scale = interface->hw.mac.itr_scale;  in fm10k_alloc_q_vector()
1652 		ring->dev = &interface->pdev->dev;  in fm10k_alloc_q_vector()
1653 		ring->netdev = interface->netdev;  in fm10k_alloc_q_vector()
1654 		rcu_assign_pointer(ring->l2_accel, interface->l2_accel);  in fm10k_alloc_q_vector()
1660 		ring->count = interface->rx_ring_count;  in fm10k_alloc_q_vector()
1663 		/* assign ring to interface */  in fm10k_alloc_q_vector()
1664 		interface->rx_ring[rxr_idx] = ring;  in fm10k_alloc_q_vector()
1681  * @interface: board private structure to initialize
1688 static void fm10k_free_q_vector(struct fm10k_intfc *interface, int v_idx)  in fm10k_free_q_vector()  argument
1690 	struct fm10k_q_vector *q_vector = interface->q_vector[v_idx];  in fm10k_free_q_vector()
1696 		interface->tx_ring[ring->queue_index] = NULL;  in fm10k_free_q_vector()
1699 		interface->rx_ring[ring->queue_index] = NULL;  in fm10k_free_q_vector()
1701 	interface->q_vector[v_idx] = NULL;  in fm10k_free_q_vector()
1708  * @interface: board private structure to initialize
1713 static int fm10k_alloc_q_vectors(struct fm10k_intfc *interface)  in fm10k_alloc_q_vectors()  argument
1715 	unsigned int q_vectors = interface->num_q_vectors;  in fm10k_alloc_q_vectors()
1716 	unsigned int rxr_remaining = interface->num_rx_queues;  in fm10k_alloc_q_vectors()
1717 	unsigned int txr_remaining = interface->num_tx_queues;  in fm10k_alloc_q_vectors()
1723 			err = fm10k_alloc_q_vector(interface, q_vectors, v_idx,  in fm10k_alloc_q_vectors()
1738 		err = fm10k_alloc_q_vector(interface, q_vectors, v_idx,  in fm10k_alloc_q_vectors()
1755 	fm10k_reset_num_queues(interface);  in fm10k_alloc_q_vectors()
1758 		fm10k_free_q_vector(interface, v_idx);  in fm10k_alloc_q_vectors()
1765  * @interface: board private structure to initialize
1771 static void fm10k_free_q_vectors(struct fm10k_intfc *interface)  in fm10k_free_q_vectors()  argument
1773 	int v_idx = interface->num_q_vectors;  in fm10k_free_q_vectors()
1775 	fm10k_reset_num_queues(interface);  in fm10k_free_q_vectors()
1778 		fm10k_free_q_vector(interface, v_idx);  in fm10k_free_q_vectors()
1783  * @interface: board private structure to initialize
1787 static void fm10k_reset_msix_capability(struct fm10k_intfc *interface)  in fm10k_reset_msix_capability()  argument
1789 	pci_disable_msix(interface->pdev);  in fm10k_reset_msix_capability()
1790 	kfree(interface->msix_entries);  in fm10k_reset_msix_capability()
1791 	interface->msix_entries = NULL;  in fm10k_reset_msix_capability()
1796  * @interface: board private structure to initialize
1801 static int fm10k_init_msix_capability(struct fm10k_intfc *interface)  in fm10k_init_msix_capability()  argument
1803 	struct fm10k_hw *hw = &interface->hw;  in fm10k_init_msix_capability()
1812 	v_budget = max(interface->num_rx_queues, interface->num_tx_queues);  in fm10k_init_msix_capability()
1827 	interface->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),  in fm10k_init_msix_capability()
1829 	if (!interface->msix_entries)  in fm10k_init_msix_capability()
1834 		interface->msix_entries[vector].entry = vector;  in fm10k_init_msix_capability()
1837 	v_budget = pci_enable_msix_range(interface->pdev,  in fm10k_init_msix_capability()
1838 					 interface->msix_entries,  in fm10k_init_msix_capability()
1842 		kfree(interface->msix_entries);  in fm10k_init_msix_capability()
1843 		interface->msix_entries = NULL;  in fm10k_init_msix_capability()
1848 	interface->num_q_vectors = v_budget - NON_Q_VECTORS;  in fm10k_init_msix_capability()
1855  * @interface: Interface structure continaining rings and devices
1859 static bool fm10k_cache_ring_qos(struct fm10k_intfc *interface)  in fm10k_cache_ring_qos()  argument
1861 	struct net_device *dev = interface->netdev;  in fm10k_cache_ring_qos()
1863 	u16 pc_stride = interface->ring_feature[RING_F_QOS].mask + 1;  in fm10k_cache_ring_qos()
1869 	rss_i = interface->ring_feature[RING_F_RSS].indices;  in fm10k_cache_ring_qos()
1875 			interface->tx_ring[offset + i]->reg_idx = q_idx;  in fm10k_cache_ring_qos()
1876 			interface->tx_ring[offset + i]->qos_pc = pc;  in fm10k_cache_ring_qos()
1877 			interface->rx_ring[offset + i]->reg_idx = q_idx;  in fm10k_cache_ring_qos()
1878 			interface->rx_ring[offset + i]->qos_pc = pc;  in fm10k_cache_ring_qos()
1888  * @interface: Interface structure continaining rings and devices
1892 static void fm10k_cache_ring_rss(struct fm10k_intfc *interface)  in fm10k_cache_ring_rss()  argument
1896 	for (i = 0; i < interface->num_rx_queues; i++)  in fm10k_cache_ring_rss()
1897 		interface->rx_ring[i]->reg_idx = i;  in fm10k_cache_ring_rss()
1899 	for (i = 0; i < interface->num_tx_queues; i++)  in fm10k_cache_ring_rss()
1900 		interface->tx_ring[i]->reg_idx = i;  in fm10k_cache_ring_rss()
1905  * @interface: Interface structure containing rings and devices
1911 static void fm10k_assign_rings(struct fm10k_intfc *interface)  in fm10k_assign_rings()  argument
1913 	if (fm10k_cache_ring_qos(interface))  in fm10k_assign_rings()
1916 	fm10k_cache_ring_rss(interface);  in fm10k_assign_rings()
1919 static void fm10k_init_reta(struct fm10k_intfc *interface)  in fm10k_init_reta()  argument
1921 	u16 i, rss_i = interface->ring_feature[RING_F_RSS].indices;  in fm10k_init_reta()
1927 	if (netif_is_rxfh_configured(interface->netdev)) {  in fm10k_init_reta()
1929 			reta = interface->reta[i];  in fm10k_init_reta()
1937 			dev_err(&interface->pdev->dev,  in fm10k_init_reta()
1947 	fm10k_write_reta(interface, NULL);  in fm10k_init_reta()
1952  * @interface: board private structure to initialize
1958 int fm10k_init_queueing_scheme(struct fm10k_intfc *interface)  in fm10k_init_queueing_scheme()  argument
1963 	fm10k_set_num_queues(interface);  in fm10k_init_queueing_scheme()
1966 	err = fm10k_init_msix_capability(interface);  in fm10k_init_queueing_scheme()
1968 		dev_err(&interface->pdev->dev,  in fm10k_init_queueing_scheme()
1974 	err = fm10k_alloc_q_vectors(interface);  in fm10k_init_queueing_scheme()
1976 		dev_err(&interface->pdev->dev,  in fm10k_init_queueing_scheme()
1982 	fm10k_assign_rings(interface);  in fm10k_init_queueing_scheme()
1985 	fm10k_init_reta(interface);  in fm10k_init_queueing_scheme()
1990 	fm10k_reset_msix_capability(interface);  in fm10k_init_queueing_scheme()
1992 	fm10k_reset_num_queues(interface);  in fm10k_init_queueing_scheme()
1998  * @interface: board private structure to clear queueing scheme on
2003 void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface)  in fm10k_clear_queueing_scheme()  argument
2005 	fm10k_free_q_vectors(interface);  in fm10k_clear_queueing_scheme()
2006 	fm10k_reset_msix_capability(interface);  in fm10k_clear_queueing_scheme()