sfc: Update RX buffer address together with length
Adjust rx_buf->page_offset when we eat the RX hash prefix. Remove
efx_rx_buf_offset(), which is now redundant.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 3fd6dbe..1bc911f 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -208,7 +208,8 @@
* @dma_addr: DMA base address of the buffer
* @page: The associated page buffer.
* Will be %NULL if the buffer slot is currently free.
- * @page_offset: Offset within page
+ * @page_offset: If pending: offset in @page of DMA base address.
+ * If completed: offset in @page of Ethernet header.
* @len: If pending: length for DMA descriptor.
* If completed: received length, excluding hash prefix.
* @flags: Flags for buffer and packet state.