diff options
Diffstat (limited to 'drivers/net/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 46 |
1 files changed, 26 insertions, 20 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index 2e6fd89f2a7..ba636e086fc 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -18,6 +18,7 @@ #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/if_vlan.h> +#include <linux/timer.h> #include <linux/mdio.h> #include <linux/list.h> #include <linux/pci.h> @@ -221,7 +222,6 @@ struct efx_tx_queue { * If both this and skb are %NULL, the buffer slot is currently free. * @data: Pointer to ethernet header * @len: Buffer length, in bytes. - * @unmap_addr: DMA address to unmap */ struct efx_rx_buffer { dma_addr_t dma_addr; @@ -229,7 +229,24 @@ struct efx_rx_buffer { struct page *page; char *data; unsigned int len; - dma_addr_t unmap_addr; +}; + +/** + * struct efx_rx_page_state - Page-based rx buffer state + * + * Inserted at the start of every page allocated for receive buffers. + * Used to facilitate sharing dma mappings between recycled rx buffers + * and those passed up to the kernel. + * + * @refcnt: Number of struct efx_rx_buffer's referencing this page. + * When refcnt falls to zero, the page is unmapped for dma + * @dma_addr: The dma address of this page. + */ +struct efx_rx_page_state { + unsigned refcnt; + dma_addr_t dma_addr; + + unsigned int __pad[0] ____cacheline_aligned; }; /** @@ -242,10 +259,6 @@ struct efx_rx_buffer { * @added_count: Number of buffers added to the receive queue. * @notified_count: Number of buffers given to NIC (<= @added_count). * @removed_count: Number of buffers removed from the receive queue. - * @add_lock: Receive queue descriptor add spin lock. - * This lock must be held in order to add buffers to the RX - * descriptor ring (rxd and buffer) and to update added_count (but - * not removed_count). * @max_fill: RX descriptor maximum fill level (<= ring size) * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill * (<= @max_fill) @@ -259,12 +272,7 @@ struct efx_rx_buffer { * overflow was observed. It should never be set. * @alloc_page_count: RX allocation strategy counter. * @alloc_skb_count: RX allocation strategy counter. - * @work: Descriptor push work thread - * @buf_page: Page for next RX buffer. - * We can use a single page for multiple RX buffers. This tracks - * the remaining space in the allocation. - * @buf_dma_addr: Page's DMA address. - * @buf_data: Page's host address. + * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). * @flushed: Use when handling queue flushing */ struct efx_rx_queue { @@ -277,7 +285,6 @@ struct efx_rx_queue { int added_count; int notified_count; int removed_count; - spinlock_t add_lock; unsigned int max_fill; unsigned int fast_fill_trigger; unsigned int fast_fill_limit; @@ -285,12 +292,9 @@ struct efx_rx_queue { unsigned int min_overfill; unsigned int alloc_page_count; unsigned int alloc_skb_count; - struct delayed_work work; + struct timer_list slow_fill; unsigned int slow_fill_count; - struct page *buf_page; - dma_addr_t buf_dma_addr; - char *buf_data; enum efx_flush_state flushed; }; @@ -336,7 +340,7 @@ enum efx_rx_alloc_method { * @eventq: Event queue buffer * @eventq_read_ptr: Event queue read pointer * @last_eventq_read_ptr: Last event queue read pointer value. - * @eventq_magic: Event queue magic value for driver-generated test events + * @magic_count: Event queue test event count * @irq_count: Number of IRQs since last adaptive moderation decision * @irq_mod_score: IRQ moderation score * @rx_alloc_level: Watermark based heuristic counter for pushing descriptors @@ -367,7 +371,7 @@ struct efx_channel { struct efx_special_buffer eventq; unsigned int eventq_read_ptr; unsigned int last_eventq_read_ptr; - unsigned int eventq_magic; + unsigned int magic_count; unsigned int irq_count; unsigned int irq_mod_score; @@ -645,6 +649,7 @@ union efx_multicast_hash { * struct efx_nic - an Efx NIC * @name: Device name (net device name or bus id before net device registered) * @pci_dev: The PCI device + * @port_num: Index of this host port within the controller * @type: Controller type attributes * @legacy_irq: IRQ number * @workqueue: Workqueue for port reconfigures and the HW monitor. @@ -728,6 +733,7 @@ union efx_multicast_hash { struct efx_nic { char name[IFNAMSIZ]; struct pci_dev *pci_dev; + unsigned port_num; const struct efx_nic_type *type; int legacy_irq; struct workqueue_struct *workqueue; @@ -830,7 +836,7 @@ static inline const char *efx_dev_name(struct efx_nic *efx) static inline unsigned int efx_port_num(struct efx_nic *efx) { - return PCI_FUNC(efx->pci_dev->devfn); + return efx->net_dev->dev_id; } /** |