diff options
Diffstat (limited to 'target/linux/mvebu/patches-5.4/009-net-mvneta-add-XDP_TX-support.patch')
| -rw-r--r-- | target/linux/mvebu/patches-5.4/009-net-mvneta-add-XDP_TX-support.patch | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/target/linux/mvebu/patches-5.4/009-net-mvneta-add-XDP_TX-support.patch b/target/linux/mvebu/patches-5.4/009-net-mvneta-add-XDP_TX-support.patch deleted file mode 100644 index 8d9b775f7b..0000000000 --- a/target/linux/mvebu/patches-5.4/009-net-mvneta-add-XDP_TX-support.patch +++ /dev/null @@ -1,175 +0,0 @@ -From b0a43db9087a21d96e1a0b716b8d9963064b2d58 Mon Sep 17 00:00:00 2001 -From: Lorenzo Bianconi <lorenzo@kernel.org> -Date: Sat, 19 Oct 2019 10:13:27 +0200 -Subject: [PATCH 7/7] net: mvneta: add XDP_TX support - -Implement XDP_TX verdict and ndo_xdp_xmit net_device_ops function -pointer - -Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/ethernet/marvell/mvneta.c | 128 ++++++++++++++++++++++++-- - 1 file changed, 121 insertions(+), 7 deletions(-) - ---- a/drivers/net/ethernet/marvell/mvneta.c -+++ b/drivers/net/ethernet/marvell/mvneta.c -@@ -1813,16 +1813,19 @@ static void mvneta_txq_bufs_free(struct - - mvneta_txq_inc_get(txq); - -- if (!IS_TSO_HEADER(txq, tx_desc->buf_phys_addr)) -+ if (!IS_TSO_HEADER(txq, tx_desc->buf_phys_addr) && -+ buf->type != MVNETA_TYPE_XDP_TX) - dma_unmap_single(pp->dev->dev.parent, - tx_desc->buf_phys_addr, - tx_desc->data_size, DMA_TO_DEVICE); -- if (!buf->skb) -- continue; -- -- bytes_compl += buf->skb->len; -- pkts_compl++; -- dev_kfree_skb_any(buf->skb); -+ if (buf->type == MVNETA_TYPE_SKB && buf->skb) { -+ bytes_compl += buf->skb->len; -+ pkts_compl++; -+ dev_kfree_skb_any(buf->skb); -+ } else if (buf->type == MVNETA_TYPE_XDP_TX || -+ buf->type == MVNETA_TYPE_XDP_NDO) { -+ xdp_return_frame(buf->xdpf); -+ } - } - - netdev_tx_completed_queue(nq, pkts_compl, bytes_compl); -@@ -1987,6 +1990,111 @@ int mvneta_rx_refill_queue(struct mvneta - } - - static int -+mvneta_xdp_submit_frame(struct mvneta_port *pp, struct mvneta_tx_queue *txq, -+ struct xdp_frame *xdpf, bool dma_map) -+{ -+ struct mvneta_tx_desc *tx_desc; -+ struct mvneta_tx_buf *buf; -+ dma_addr_t dma_addr; -+ -+ if (txq->count >= txq->tx_stop_threshold) -+ return MVNETA_XDP_DROPPED; -+ -+ tx_desc = mvneta_txq_next_desc_get(txq); -+ -+ buf = &txq->buf[txq->txq_put_index]; -+ if (dma_map) { -+ /* ndo_xdp_xmit */ -+ dma_addr = dma_map_single(pp->dev->dev.parent, xdpf->data, -+ xdpf->len, DMA_TO_DEVICE); -+ if (dma_mapping_error(pp->dev->dev.parent, dma_addr)) { -+ mvneta_txq_desc_put(txq); -+ return MVNETA_XDP_DROPPED; -+ } -+ buf->type = MVNETA_TYPE_XDP_NDO; -+ } else { -+ struct page *page = virt_to_page(xdpf->data); -+ -+ dma_addr = page_pool_get_dma_addr(page) + -+ sizeof(*xdpf) + xdpf->headroom; -+ dma_sync_single_for_device(pp->dev->dev.parent, dma_addr, -+ xdpf->len, DMA_BIDIRECTIONAL); -+ buf->type = MVNETA_TYPE_XDP_TX; -+ } -+ buf->xdpf = xdpf; -+ -+ tx_desc->command = MVNETA_TXD_FLZ_DESC; -+ tx_desc->buf_phys_addr = dma_addr; -+ tx_desc->data_size = xdpf->len; -+ -+ mvneta_update_stats(pp, 1, xdpf->len, true); -+ mvneta_txq_inc_put(txq); -+ txq->pending++; -+ txq->count++; -+ -+ return MVNETA_XDP_TX; -+} -+ -+static int -+mvneta_xdp_xmit_back(struct mvneta_port *pp, struct xdp_buff *xdp) -+{ -+ struct mvneta_tx_queue *txq; -+ struct netdev_queue *nq; -+ struct xdp_frame *xdpf; -+ int cpu; -+ u32 ret; -+ -+ xdpf = convert_to_xdp_frame(xdp); -+ if (unlikely(!xdpf)) -+ return MVNETA_XDP_DROPPED; -+ -+ cpu = smp_processor_id(); -+ txq = &pp->txqs[cpu % txq_number]; -+ nq = netdev_get_tx_queue(pp->dev, txq->id); -+ -+ __netif_tx_lock(nq, cpu); -+ ret = mvneta_xdp_submit_frame(pp, txq, xdpf, false); -+ if (ret == MVNETA_XDP_TX) -+ mvneta_txq_pend_desc_add(pp, txq, 0); -+ __netif_tx_unlock(nq); -+ -+ return ret; -+} -+ -+static int -+mvneta_xdp_xmit(struct net_device *dev, int num_frame, -+ struct xdp_frame **frames, u32 flags) -+{ -+ struct mvneta_port *pp = netdev_priv(dev); -+ int cpu = smp_processor_id(); -+ struct mvneta_tx_queue *txq; -+ struct netdev_queue *nq; -+ int i, drops = 0; -+ u32 ret; -+ -+ if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) -+ return -EINVAL; -+ -+ txq = &pp->txqs[cpu % txq_number]; -+ nq = netdev_get_tx_queue(pp->dev, txq->id); -+ -+ __netif_tx_lock(nq, cpu); -+ for (i = 0; i < num_frame; i++) { -+ ret = mvneta_xdp_submit_frame(pp, txq, frames[i], true); -+ if (ret != MVNETA_XDP_TX) { -+ xdp_return_frame_rx_napi(frames[i]); -+ drops++; -+ } -+ } -+ -+ if (unlikely(flags & XDP_XMIT_FLUSH)) -+ mvneta_txq_pend_desc_add(pp, txq, 0); -+ __netif_tx_unlock(nq); -+ -+ return num_frame - drops; -+} -+ -+static int - mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, - struct bpf_prog *prog, struct xdp_buff *xdp) - { -@@ -2008,6 +2116,11 @@ mvneta_run_xdp(struct mvneta_port *pp, s - } - break; - } -+ case XDP_TX: -+ ret = mvneta_xdp_xmit_back(pp, xdp); -+ if (ret != MVNETA_XDP_TX) -+ xdp_return_buff(xdp); -+ break; - default: - bpf_warn_invalid_xdp_action(act); - /* fall through */ -@@ -4581,6 +4694,7 @@ static const struct net_device_ops mvnet - .ndo_get_stats64 = mvneta_get_stats64, - .ndo_do_ioctl = mvneta_ioctl, - .ndo_bpf = mvneta_xdp, -+ .ndo_xdp_xmit = mvneta_xdp_xmit, - }; - - static const struct ethtool_ops mvneta_eth_tool_ops = { |