diff options
Diffstat (limited to 'drivers/net/ethernet/socionext/netsec.c')
| -rw-r--r-- | drivers/net/ethernet/socionext/netsec.c | 68 |
1 files changed, 41 insertions, 27 deletions
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index a5a0fb60193a..1503cc9ec6e2 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -6,6 +6,7 @@ #include <linux/pm_runtime.h> #include <linux/acpi.h> #include <linux/of_mdio.h> +#include <linux/of_net.h> #include <linux/etherdevice.h> #include <linux/interrupt.h> #include <linux/io.h> @@ -867,7 +868,7 @@ static u32 netsec_xdp_queue_one(struct netsec_priv *priv, static u32 netsec_xdp_xmit_back(struct netsec_priv *priv, struct xdp_buff *xdp) { struct netsec_desc_ring *tx_ring = &priv->desc_ring[NETSEC_RING_TX]; - struct xdp_frame *xdpf = convert_to_xdp_frame(xdp); + struct xdp_frame *xdpf = xdp_convert_buff_to_frame(xdp); u32 ret; if (unlikely(!xdpf)) @@ -884,23 +885,28 @@ static u32 netsec_run_xdp(struct netsec_priv *priv, struct bpf_prog *prog, struct xdp_buff *xdp) { struct netsec_desc_ring *dring = &priv->desc_ring[NETSEC_RING_RX]; - unsigned int len = xdp->data_end - xdp->data; + unsigned int sync, len = xdp->data_end - xdp->data; u32 ret = NETSEC_XDP_PASS; + struct page *page; int err; u32 act; act = bpf_prog_run_xdp(prog, xdp); + /* Due xdp_adjust_tail: DMA sync for_device cover max len CPU touch */ + sync = xdp->data_end - xdp->data_hard_start - NETSEC_RXBUF_HEADROOM; + sync = max(sync, len); + switch (act) { case XDP_PASS: ret = NETSEC_XDP_PASS; break; case XDP_TX: ret = netsec_xdp_xmit_back(priv, xdp); - if (ret != NETSEC_XDP_TX) - page_pool_put_page(dring->page_pool, - virt_to_head_page(xdp->data), len, - true); + if (ret != NETSEC_XDP_TX) { + page = virt_to_head_page(xdp->data); + page_pool_put_page(dring->page_pool, page, sync, true); + } break; case XDP_REDIRECT: err = xdp_do_redirect(priv->ndev, xdp, prog); @@ -908,21 +914,20 @@ static u32 netsec_run_xdp(struct netsec_priv *priv, struct bpf_prog *prog, ret = NETSEC_XDP_REDIR; } else { ret = NETSEC_XDP_CONSUMED; - page_pool_put_page(dring->page_pool, - virt_to_head_page(xdp->data), len, - true); + page = virt_to_head_page(xdp->data); + page_pool_put_page(dring->page_pool, page, sync, true); } break; default: bpf_warn_invalid_xdp_action(act); - /* fall through */ + fallthrough; case XDP_ABORTED: trace_xdp_exception(priv->ndev, prog, act); - /* fall through -- handle aborts by dropping packet */ + fallthrough; /* handle aborts by dropping packet */ case XDP_DROP: ret = NETSEC_XDP_CONSUMED; - page_pool_put_page(dring->page_pool, - virt_to_head_page(xdp->data), len, true); + page = virt_to_head_page(xdp->data); + page_pool_put_page(dring->page_pool, page, sync, true); break; } @@ -936,10 +941,14 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) struct netsec_rx_pkt_info rx_info; enum dma_data_direction dma_dir; struct bpf_prog *xdp_prog; + struct xdp_buff xdp; u16 xdp_xmit = 0; u32 xdp_act = 0; int done = 0; + xdp.rxq = &dring->xdp_rxq; + xdp.frame_sz = PAGE_SIZE; + rcu_read_lock(); xdp_prog = READ_ONCE(priv->xdp_prog); dma_dir = page_pool_get_dma_dir(dring->page_pool); @@ -953,7 +962,6 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) struct sk_buff *skb = NULL; u16 pkt_len, desc_len; dma_addr_t dma_handle; - struct xdp_buff xdp; void *buf_addr; if (de->attr & (1U << NETSEC_RX_PKT_OWN_FIELD)) { @@ -1002,7 +1010,6 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) xdp.data = desc->addr + NETSEC_RXBUF_HEADROOM; xdp_set_data_meta_invalid(&xdp); xdp.data_end = xdp.data + pkt_len; - xdp.rxq = &dring->xdp_rxq; if (xdp_prog) { xdp_result = netsec_run_xdp(priv, xdp_prog, &xdp); @@ -1038,8 +1045,9 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) skb->ip_summed = CHECKSUM_UNNECESSARY; next: - if ((skb && napi_gro_receive(&priv->napi, skb) != GRO_DROP) || - xdp_result) { + if (skb) + napi_gro_receive(&priv->napi, skb); + if (skb || xdp_result) { ndev->stats.rx_packets++; ndev->stats.rx_bytes += xdp.data_end - xdp.data; } @@ -1804,9 +1812,6 @@ static int netsec_xdp(struct net_device *ndev, struct netdev_bpf *xdp) switch (xdp->command) { case XDP_SETUP_PROG: return netsec_xdp_setup(priv, xdp->prog, xdp->extack); - case XDP_QUERY_PROG: - xdp->prog_id = priv->xdp_prog ? priv->xdp_prog->aux->id : 0; - return 0; default: return -EINVAL; } @@ -1829,6 +1834,14 @@ static const struct net_device_ops netsec_netdev_ops = { static int netsec_of_probe(struct platform_device *pdev, struct netsec_priv *priv, u32 *phy_addr) { + int err; + + err = of_get_phy_mode(pdev->dev.of_node, &priv->phy_interface); + if (err) { + dev_err(&pdev->dev, "missing required property 'phy-mode'\n"); + return err; + } + priv->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0); if (!priv->phy_np) { dev_err(&pdev->dev, "missing required property 'phy-handle'\n"); @@ -1855,6 +1868,14 @@ static int netsec_acpi_probe(struct platform_device *pdev, if (!IS_ENABLED(CONFIG_ACPI)) return -ENODEV; + /* ACPI systems are assumed to configure the PHY in firmware, so + * there is really no need to discover the PHY mode from the DSDT. + * Since firmware is known to exist in the field that configures the + * PHY correctly but passes the wrong mode string in the phy-mode + * device property, we have no choice but to ignore it. + */ + priv->phy_interface = PHY_INTERFACE_MODE_NA; + ret = device_property_read_u32(&pdev->dev, "phy-channel", phy_addr); if (ret) { dev_err(&pdev->dev, @@ -1991,13 +2012,6 @@ static int netsec_probe(struct platform_device *pdev) priv->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK | NETIF_MSG_PROBE; - priv->phy_interface = device_get_phy_mode(&pdev->dev); - if ((int)priv->phy_interface < 0) { - dev_err(&pdev->dev, "missing required property 'phy-mode'\n"); - ret = -ENODEV; - goto free_ndev; - } - priv->ioaddr = devm_ioremap(&pdev->dev, mmio_res->start, resource_size(mmio_res)); if (!priv->ioaddr) { |