sfc: support encapsulation of xdp_frames in efx_tx_buffer (8c423501) · Commits · 戴 / test

drivers/net/ethernet/sfc/net_driver.h

+8 −2

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@
		#include <linux/i2c.h>
		#include <linux/mtd/mtd.h>
		#include <net/busy_poll.h>
		#include <net/xdp.h>

		#include "enum.h"
		#include "bitfield.h"
		@@ -136,7 +137,8 @@ struct efx_special_buffer {
		* struct efx_tx_buffer - buffer state for a TX descriptor
		* @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be
		* freed when descriptor completes
		* @option: When @flags & %EFX_TX_BUF_OPTION, a NIC-specific option descriptor.
		* @xdpf: When @flags & %EFX_TX_BUF_XDP, the XDP frame information; its @data
		* member is the associated buffer to drop a page reference on.
		* @dma_addr: DMA address of the fragment.
		* @flags: Flags for allocation and DMA mapping type
		* @len: Length of this fragment.
		@@ -146,7 +148,10 @@ struct efx_special_buffer {
		* Only valid if @unmap_len != 0.
		*/
		struct efx_tx_buffer {
		union {
		const struct sk_buff *skb;
		struct xdp_frame *xdpf;
		};
		union {
		efx_qword_t option;
		dma_addr_t dma_addr;
		@@ -160,6 +165,7 @@ struct efx_tx_buffer {
		#define EFX_TX_BUF_SKB 2 /* buffer is last part of skb */
		#define EFX_TX_BUF_MAP_SINGLE 8 /* buffer was mapped with dma_map_single() */
		#define EFX_TX_BUF_OPTION 0x10 /* empty buffer for option descriptor */
		#define EFX_TX_BUF_XDP 0x20 /* buffer was sent with XDP */

		/**
		* struct efx_tx_queue - An Efx TX queue

+2 −0

Original line number	Diff line number	Diff line
		@@ -95,6 +95,8 @@ static void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
		netif_vdbg(tx_queue->efx, tx_done, tx_queue->efx->net_dev,
		"TX queue %d transmission id %x complete\n",
		tx_queue->queue, tx_queue->read_count);
		} else if (buffer->flags & EFX_TX_BUF_XDP) {
		xdp_return_frame_rx_napi(buffer->xdpf);
		}

		buffer->len = 0;