From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/net/ethernet/netronome/nfp/nfp_net_dp.c | 466 ++++++++++++++++++++++++ 1 file changed, 466 insertions(+) create mode 100644 drivers/net/ethernet/netronome/nfp/nfp_net_dp.c (limited to 'drivers/net/ethernet/netronome/nfp/nfp_net_dp.c') diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_dp.c b/drivers/net/ethernet/netronome/nfp/nfp_net_dp.c new file mode 100644 index 000000000..550df83b7 --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_dp.c @@ -0,0 +1,466 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +/* Copyright (C) 2015-2019 Netronome Systems, Inc. */ + +#include "nfp_app.h" +#include "nfp_net_dp.h" +#include "nfp_net_xsk.h" + +/** + * nfp_net_rx_alloc_one() - Allocate and map page frag for RX + * @dp: NFP Net data path struct + * @dma_addr: Pointer to storage for DMA address (output param) + * + * This function will allcate a new page frag, map it for DMA. + * + * Return: allocated page frag or NULL on failure. + */ +void *nfp_net_rx_alloc_one(struct nfp_net_dp *dp, dma_addr_t *dma_addr) +{ + void *frag; + + if (!dp->xdp_prog) { + frag = netdev_alloc_frag(dp->fl_bufsz); + } else { + struct page *page; + + page = alloc_page(GFP_KERNEL); + frag = page ? page_address(page) : NULL; + } + if (!frag) { + nn_dp_warn(dp, "Failed to alloc receive page frag\n"); + return NULL; + } + + *dma_addr = nfp_net_dma_map_rx(dp, frag); + if (dma_mapping_error(dp->dev, *dma_addr)) { + nfp_net_free_frag(frag, dp->xdp_prog); + nn_dp_warn(dp, "Failed to map DMA RX buffer\n"); + return NULL; + } + + return frag; +} + +/** + * nfp_net_tx_ring_init() - Fill in the boilerplate for a TX ring + * @tx_ring: TX ring structure + * @dp: NFP Net data path struct + * @r_vec: IRQ vector servicing this ring + * @idx: Ring index + * @is_xdp: Is this an XDP TX ring? + */ +static void +nfp_net_tx_ring_init(struct nfp_net_tx_ring *tx_ring, struct nfp_net_dp *dp, + struct nfp_net_r_vector *r_vec, unsigned int idx, + bool is_xdp) +{ + struct nfp_net *nn = r_vec->nfp_net; + + tx_ring->idx = idx; + tx_ring->r_vec = r_vec; + tx_ring->is_xdp = is_xdp; + u64_stats_init(&tx_ring->r_vec->tx_sync); + + tx_ring->qcidx = tx_ring->idx * nn->stride_tx; + tx_ring->txrwb = dp->txrwb ? &dp->txrwb[idx] : NULL; + tx_ring->qcp_q = nn->tx_bar + NFP_QCP_QUEUE_OFF(tx_ring->qcidx); +} + +/** + * nfp_net_rx_ring_init() - Fill in the boilerplate for a RX ring + * @rx_ring: RX ring structure + * @r_vec: IRQ vector servicing this ring + * @idx: Ring index + */ +static void +nfp_net_rx_ring_init(struct nfp_net_rx_ring *rx_ring, + struct nfp_net_r_vector *r_vec, unsigned int idx) +{ + struct nfp_net *nn = r_vec->nfp_net; + + rx_ring->idx = idx; + rx_ring->r_vec = r_vec; + u64_stats_init(&rx_ring->r_vec->rx_sync); + + rx_ring->fl_qcidx = rx_ring->idx * nn->stride_rx; + rx_ring->qcp_fl = nn->rx_bar + NFP_QCP_QUEUE_OFF(rx_ring->fl_qcidx); +} + +/** + * nfp_net_rx_ring_reset() - Reflect in SW state of freelist after disable + * @rx_ring: RX ring structure + * + * Assumes that the device is stopped, must be idempotent. + */ +void nfp_net_rx_ring_reset(struct nfp_net_rx_ring *rx_ring) +{ + unsigned int wr_idx, last_idx; + + /* wr_p == rd_p means ring was never fed FL bufs. RX rings are always + * kept at cnt - 1 FL bufs. + */ + if (rx_ring->wr_p == 0 && rx_ring->rd_p == 0) + return; + + /* Move the empty entry to the end of the list */ + wr_idx = D_IDX(rx_ring, rx_ring->wr_p); + last_idx = rx_ring->cnt - 1; + if (rx_ring->r_vec->xsk_pool) { + rx_ring->xsk_rxbufs[wr_idx] = rx_ring->xsk_rxbufs[last_idx]; + memset(&rx_ring->xsk_rxbufs[last_idx], 0, + sizeof(*rx_ring->xsk_rxbufs)); + } else { + rx_ring->rxbufs[wr_idx] = rx_ring->rxbufs[last_idx]; + memset(&rx_ring->rxbufs[last_idx], 0, sizeof(*rx_ring->rxbufs)); + } + + memset(rx_ring->rxds, 0, rx_ring->size); + rx_ring->wr_p = 0; + rx_ring->rd_p = 0; +} + +/** + * nfp_net_rx_ring_bufs_free() - Free any buffers currently on the RX ring + * @dp: NFP Net data path struct + * @rx_ring: RX ring to remove buffers from + * + * Assumes that the device is stopped and buffers are in [0, ring->cnt - 1) + * entries. After device is disabled nfp_net_rx_ring_reset() must be called + * to restore required ring geometry. + */ +static void +nfp_net_rx_ring_bufs_free(struct nfp_net_dp *dp, + struct nfp_net_rx_ring *rx_ring) +{ + unsigned int i; + + if (nfp_net_has_xsk_pool_slow(dp, rx_ring->idx)) + return; + + for (i = 0; i < rx_ring->cnt - 1; i++) { + /* NULL skb can only happen when initial filling of the ring + * fails to allocate enough buffers and calls here to free + * already allocated ones. + */ + if (!rx_ring->rxbufs[i].frag) + continue; + + nfp_net_dma_unmap_rx(dp, rx_ring->rxbufs[i].dma_addr); + nfp_net_free_frag(rx_ring->rxbufs[i].frag, dp->xdp_prog); + rx_ring->rxbufs[i].dma_addr = 0; + rx_ring->rxbufs[i].frag = NULL; + } +} + +/** + * nfp_net_rx_ring_bufs_alloc() - Fill RX ring with buffers (don't give to FW) + * @dp: NFP Net data path struct + * @rx_ring: RX ring to remove buffers from + */ +static int +nfp_net_rx_ring_bufs_alloc(struct nfp_net_dp *dp, + struct nfp_net_rx_ring *rx_ring) +{ + struct nfp_net_rx_buf *rxbufs; + unsigned int i; + + if (nfp_net_has_xsk_pool_slow(dp, rx_ring->idx)) + return 0; + + rxbufs = rx_ring->rxbufs; + + for (i = 0; i < rx_ring->cnt - 1; i++) { + rxbufs[i].frag = nfp_net_rx_alloc_one(dp, &rxbufs[i].dma_addr); + if (!rxbufs[i].frag) { + nfp_net_rx_ring_bufs_free(dp, rx_ring); + return -ENOMEM; + } + } + + return 0; +} + +int nfp_net_tx_rings_prepare(struct nfp_net *nn, struct nfp_net_dp *dp) +{ + unsigned int r; + + dp->tx_rings = kcalloc(dp->num_tx_rings, sizeof(*dp->tx_rings), + GFP_KERNEL); + if (!dp->tx_rings) + return -ENOMEM; + + if (dp->ctrl & NFP_NET_CFG_CTRL_TXRWB) { + dp->txrwb = dma_alloc_coherent(dp->dev, + dp->num_tx_rings * sizeof(u64), + &dp->txrwb_dma, GFP_KERNEL); + if (!dp->txrwb) + goto err_free_rings; + } + + for (r = 0; r < dp->num_tx_rings; r++) { + int bias = 0; + + if (r >= dp->num_stack_tx_rings) + bias = dp->num_stack_tx_rings; + + nfp_net_tx_ring_init(&dp->tx_rings[r], dp, + &nn->r_vecs[r - bias], r, bias); + + if (nfp_net_tx_ring_alloc(dp, &dp->tx_rings[r])) + goto err_free_prev; + + if (nfp_net_tx_ring_bufs_alloc(dp, &dp->tx_rings[r])) + goto err_free_ring; + } + + return 0; + +err_free_prev: + while (r--) { + nfp_net_tx_ring_bufs_free(dp, &dp->tx_rings[r]); +err_free_ring: + nfp_net_tx_ring_free(dp, &dp->tx_rings[r]); + } + if (dp->txrwb) + dma_free_coherent(dp->dev, dp->num_tx_rings * sizeof(u64), + dp->txrwb, dp->txrwb_dma); +err_free_rings: + kfree(dp->tx_rings); + return -ENOMEM; +} + +void nfp_net_tx_rings_free(struct nfp_net_dp *dp) +{ + unsigned int r; + + for (r = 0; r < dp->num_tx_rings; r++) { + nfp_net_tx_ring_bufs_free(dp, &dp->tx_rings[r]); + nfp_net_tx_ring_free(dp, &dp->tx_rings[r]); + } + + if (dp->txrwb) + dma_free_coherent(dp->dev, dp->num_tx_rings * sizeof(u64), + dp->txrwb, dp->txrwb_dma); + kfree(dp->tx_rings); +} + +/** + * nfp_net_rx_ring_free() - Free resources allocated to a RX ring + * @rx_ring: RX ring to free + */ +static void nfp_net_rx_ring_free(struct nfp_net_rx_ring *rx_ring) +{ + struct nfp_net_r_vector *r_vec = rx_ring->r_vec; + struct nfp_net_dp *dp = &r_vec->nfp_net->dp; + + if (dp->netdev) + xdp_rxq_info_unreg(&rx_ring->xdp_rxq); + + if (nfp_net_has_xsk_pool_slow(dp, rx_ring->idx)) + kvfree(rx_ring->xsk_rxbufs); + else + kvfree(rx_ring->rxbufs); + + if (rx_ring->rxds) + dma_free_coherent(dp->dev, rx_ring->size, + rx_ring->rxds, rx_ring->dma); + + rx_ring->cnt = 0; + rx_ring->rxbufs = NULL; + rx_ring->xsk_rxbufs = NULL; + rx_ring->rxds = NULL; + rx_ring->dma = 0; + rx_ring->size = 0; +} + +/** + * nfp_net_rx_ring_alloc() - Allocate resource for a RX ring + * @dp: NFP Net data path struct + * @rx_ring: RX ring to allocate + * + * Return: 0 on success, negative errno otherwise. + */ +static int +nfp_net_rx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring) +{ + enum xdp_mem_type mem_type; + size_t rxbuf_sw_desc_sz; + int err; + + if (nfp_net_has_xsk_pool_slow(dp, rx_ring->idx)) { + mem_type = MEM_TYPE_XSK_BUFF_POOL; + rxbuf_sw_desc_sz = sizeof(*rx_ring->xsk_rxbufs); + } else { + mem_type = MEM_TYPE_PAGE_ORDER0; + rxbuf_sw_desc_sz = sizeof(*rx_ring->rxbufs); + } + + if (dp->netdev) { + err = xdp_rxq_info_reg(&rx_ring->xdp_rxq, dp->netdev, + rx_ring->idx, rx_ring->r_vec->napi.napi_id); + if (err < 0) + return err; + + err = xdp_rxq_info_reg_mem_model(&rx_ring->xdp_rxq, mem_type, NULL); + if (err) + goto err_alloc; + } + + rx_ring->cnt = dp->rxd_cnt; + rx_ring->size = array_size(rx_ring->cnt, sizeof(*rx_ring->rxds)); + rx_ring->rxds = dma_alloc_coherent(dp->dev, rx_ring->size, + &rx_ring->dma, + GFP_KERNEL | __GFP_NOWARN); + if (!rx_ring->rxds) { + netdev_warn(dp->netdev, "failed to allocate RX descriptor ring memory, requested descriptor count: %d, consider lowering descriptor count\n", + rx_ring->cnt); + goto err_alloc; + } + + if (nfp_net_has_xsk_pool_slow(dp, rx_ring->idx)) { + rx_ring->xsk_rxbufs = kvcalloc(rx_ring->cnt, rxbuf_sw_desc_sz, + GFP_KERNEL); + if (!rx_ring->xsk_rxbufs) + goto err_alloc; + } else { + rx_ring->rxbufs = kvcalloc(rx_ring->cnt, rxbuf_sw_desc_sz, + GFP_KERNEL); + if (!rx_ring->rxbufs) + goto err_alloc; + } + + return 0; + +err_alloc: + nfp_net_rx_ring_free(rx_ring); + return -ENOMEM; +} + +int nfp_net_rx_rings_prepare(struct nfp_net *nn, struct nfp_net_dp *dp) +{ + unsigned int r; + + dp->rx_rings = kcalloc(dp->num_rx_rings, sizeof(*dp->rx_rings), + GFP_KERNEL); + if (!dp->rx_rings) + return -ENOMEM; + + for (r = 0; r < dp->num_rx_rings; r++) { + nfp_net_rx_ring_init(&dp->rx_rings[r], &nn->r_vecs[r], r); + + if (nfp_net_rx_ring_alloc(dp, &dp->rx_rings[r])) + goto err_free_prev; + + if (nfp_net_rx_ring_bufs_alloc(dp, &dp->rx_rings[r])) + goto err_free_ring; + } + + return 0; + +err_free_prev: + while (r--) { + nfp_net_rx_ring_bufs_free(dp, &dp->rx_rings[r]); +err_free_ring: + nfp_net_rx_ring_free(&dp->rx_rings[r]); + } + kfree(dp->rx_rings); + return -ENOMEM; +} + +void nfp_net_rx_rings_free(struct nfp_net_dp *dp) +{ + unsigned int r; + + for (r = 0; r < dp->num_rx_rings; r++) { + nfp_net_rx_ring_bufs_free(dp, &dp->rx_rings[r]); + nfp_net_rx_ring_free(&dp->rx_rings[r]); + } + + kfree(dp->rx_rings); +} + +void +nfp_net_rx_ring_hw_cfg_write(struct nfp_net *nn, + struct nfp_net_rx_ring *rx_ring, unsigned int idx) +{ + /* Write the DMA address, size and MSI-X info to the device */ + nn_writeq(nn, NFP_NET_CFG_RXR_ADDR(idx), rx_ring->dma); + nn_writeb(nn, NFP_NET_CFG_RXR_SZ(idx), ilog2(rx_ring->cnt)); + nn_writeb(nn, NFP_NET_CFG_RXR_VEC(idx), rx_ring->r_vec->irq_entry); +} + +void +nfp_net_tx_ring_hw_cfg_write(struct nfp_net *nn, + struct nfp_net_tx_ring *tx_ring, unsigned int idx) +{ + nn_writeq(nn, NFP_NET_CFG_TXR_ADDR(idx), tx_ring->dma); + if (tx_ring->txrwb) { + *tx_ring->txrwb = 0; + nn_writeq(nn, NFP_NET_CFG_TXR_WB_ADDR(idx), + nn->dp.txrwb_dma + idx * sizeof(u64)); + } + nn_writeb(nn, NFP_NET_CFG_TXR_SZ(idx), ilog2(tx_ring->cnt)); + nn_writeb(nn, NFP_NET_CFG_TXR_VEC(idx), tx_ring->r_vec->irq_entry); +} + +void nfp_net_vec_clear_ring_data(struct nfp_net *nn, unsigned int idx) +{ + nn_writeq(nn, NFP_NET_CFG_RXR_ADDR(idx), 0); + nn_writeb(nn, NFP_NET_CFG_RXR_SZ(idx), 0); + nn_writeb(nn, NFP_NET_CFG_RXR_VEC(idx), 0); + + nn_writeq(nn, NFP_NET_CFG_TXR_ADDR(idx), 0); + nn_writeq(nn, NFP_NET_CFG_TXR_WB_ADDR(idx), 0); + nn_writeb(nn, NFP_NET_CFG_TXR_SZ(idx), 0); + nn_writeb(nn, NFP_NET_CFG_TXR_VEC(idx), 0); +} + +netdev_tx_t nfp_net_tx(struct sk_buff *skb, struct net_device *netdev) +{ + struct nfp_net *nn = netdev_priv(netdev); + + return nn->dp.ops->xmit(skb, netdev); +} + +bool __nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb) +{ + struct nfp_net_r_vector *r_vec = &nn->r_vecs[0]; + + return nn->dp.ops->ctrl_tx_one(nn, r_vec, skb, false); +} + +bool nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb) +{ + struct nfp_net_r_vector *r_vec = &nn->r_vecs[0]; + bool ret; + + spin_lock_bh(&r_vec->lock); + ret = nn->dp.ops->ctrl_tx_one(nn, r_vec, skb, false); + spin_unlock_bh(&r_vec->lock); + + return ret; +} + +bool nfp_net_vlan_strip(struct sk_buff *skb, const struct nfp_net_rx_desc *rxd, + const struct nfp_meta_parsed *meta) +{ + u16 tpid = 0, tci = 0; + + if (rxd->rxd.flags & PCIE_DESC_RX_VLAN) { + tpid = ETH_P_8021Q; + tci = le16_to_cpu(rxd->rxd.vlan); + } else if (meta->vlan.stripped) { + if (meta->vlan.tpid == NFP_NET_VLAN_CTAG) + tpid = ETH_P_8021Q; + else if (meta->vlan.tpid == NFP_NET_VLAN_STAG) + tpid = ETH_P_8021AD; + else + return false; + + tci = meta->vlan.tci; + } + if (tpid) + __vlan_hwaccel_put_tag(skb, htons(tpid), tci); + + return true; +} -- cgit v1.2.3