diff options
Diffstat (limited to 'drivers/net/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index 59c8ecc39ae..40c0d931b18 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -232,6 +232,24 @@ struct efx_rx_buffer { }; /** + * 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; +}; + +/** * struct efx_rx_queue - An Efx RX queue * @efx: The associated Efx NIC * @queue: DMA queue number |