diff options
Diffstat (limited to 'drivers/net/sfc')
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 4 | ||||
| -rw-r--r-- | drivers/net/sfc/rx.c | 10 |
2 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index 47aff8e..2f932c5 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -214,6 +214,7 @@ struct efx_tx_queue { * If both this and page are %NULL, the buffer slot is currently free. * @page: The associated page buffer, if any. * If both this and skb are %NULL, the buffer slot is currently free. + * @page_offset: Offset within page. Valid iff @flags & %EFX_RX_BUF_PAGE. * @len: Buffer length, in bytes. * @is_page: Indicates if @page is valid. If false, @skb is valid. */ @@ -223,7 +224,8 @@ struct efx_rx_buffer { struct sk_buff *skb; struct page *page; } u; - unsigned int len; + u16 page_offset; + u16 len; bool is_page; }; diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c index ce6f53f..d429f0a 100644 --- a/drivers/net/sfc/rx.c +++ b/drivers/net/sfc/rx.c @@ -94,11 +94,7 @@ static unsigned int rx_refill_limit = 95; static inline unsigned int efx_rx_buf_offset(struct efx_nic *efx, struct efx_rx_buffer *buf) { - /* Offset is always within one page, so we don't need to consider - * the page order. - */ - return (((__force unsigned long) buf->dma_addr & (PAGE_SIZE - 1)) + - efx->type->rx_buffer_hash_size); + return buf->page_offset + efx->type->rx_buffer_hash_size; } static inline unsigned int efx_rx_buf_size(struct efx_nic *efx) { @@ -193,6 +189,7 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) struct efx_rx_buffer *rx_buf; struct page *page; void *page_addr; + unsigned int page_offset; struct efx_rx_page_state *state; dma_addr_t dma_addr; unsigned index, count; @@ -219,12 +216,14 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) page_addr += sizeof(struct efx_rx_page_state); dma_addr += sizeof(struct efx_rx_page_state); + page_offset = sizeof(struct efx_rx_page_state); split: index = rx_queue->added_count & rx_queue->ptr_mask; rx_buf = efx_rx_buffer(rx_queue, index); rx_buf->dma_addr = dma_addr + EFX_PAGE_IP_ALIGN; rx_buf->u.page = page; + rx_buf->page_offset = page_offset + EFX_PAGE_IP_ALIGN; rx_buf->len = efx->rx_buffer_len - EFX_PAGE_IP_ALIGN; rx_buf->is_page = true; ++rx_queue->added_count; @@ -236,6 +235,7 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) get_page(page); dma_addr += (PAGE_SIZE >> 1); page_addr += (PAGE_SIZE >> 1); + page_offset += (PAGE_SIZE >> 1); ++count; goto split; } |