diff options
| author | Ong Boon Leong <boon.leong.ong@intel.com> | 2021-04-01 05:11:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-04 00:13:39 +0300 |
| commit | be8b38a722e68ffa069b7dfa887369c33d6ea886 (patch) | |
| tree | 88a3138096cd19d3655f39c1a0c42887036a2836 /drivers/net/ethernet/stmicro/stmmac/stmmac.h | |
| parent | 5fabb01207a2d3439a6abe1d08640de9c942945f (diff) | |
| download | linux-be8b38a722e68ffa069b7dfa887369c33d6ea886.tar.xz | |
net: stmmac: Add support for XDP_TX action
This patch adds support for XDP_TX action which enables XDP program to
transmit back received frames.
This patch has been tested with the "xdp2" app located in samples/bpf
dir. The DUT receives burst traffic packet generated using pktgen script
'pktgen_sample03_burst_single_flow.sh'.
v4: Moved stmmac_tx_timer_arm() to be done once at the end of NAPI RX.
Fixed stmmac_xdp_xmit_back() to return STMMAC_XDP_CONSUMED if
XDP buffer to frame conversion fails. Thanks to Jakub's input.
v3: Added 'nq->trans_start = jiffies' to avoid TX time-out as we are
sharing TX queue between slow path and XDP. Thanks to Jakub Kicinski
for pointing out.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index e72224c8fbac..a93e22a6be59 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -36,12 +36,18 @@ struct stmmac_resources { int tx_irq[MTL_MAX_TX_QUEUES]; }; +enum stmmac_txbuf_type { + STMMAC_TXBUF_T_SKB, + STMMAC_TXBUF_T_XDP_TX, +}; + struct stmmac_tx_info { dma_addr_t buf; bool map_as_page; unsigned len; bool last_segment; bool is_jumbo; + enum stmmac_txbuf_type buf_type; }; #define STMMAC_TBS_AVAIL BIT(0) @@ -57,7 +63,10 @@ struct stmmac_tx_queue { struct dma_extended_desc *dma_etx ____cacheline_aligned_in_smp; struct dma_edesc *dma_entx; struct dma_desc *dma_tx; - struct sk_buff **tx_skbuff; + union { + struct sk_buff **tx_skbuff; + struct xdp_frame **xdpf; + }; struct stmmac_tx_info *tx_skbuff_dma; unsigned int cur_tx; unsigned int dirty_tx; @@ -77,6 +86,7 @@ struct stmmac_rx_buffer { struct stmmac_rx_queue { u32 rx_count_frames; u32 queue_index; + struct xdp_rxq_info xdp_rxq; struct page_pool *page_pool; struct stmmac_rx_buffer *buf_pool; struct stmmac_priv *priv_data; |