Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 409 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfd3/xsk.c b/drivers/net/ethernet/netronome/nfp/nfd3/xsk.c
new file mode 100644
index 000000000..5d9db8c2a
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/nfd3/xsk.c
@@ -0,0 +1,409 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/* Copyright (C) 2018 Netronome Systems, Inc */
+/* Copyright (C) 2021 Corigine, Inc */
+
+#include <linux/bpf_trace.h>
+#include <linux/netdevice.h>
+
+#include "../nfp_app.h"
+#include "../nfp_net.h"
+#include "../nfp_net_dp.h"
+#include "../nfp_net_xsk.h"
+#include "nfd3.h"
+
+static bool
+nfp_nfd3_xsk_tx_xdp(const struct nfp_net_dp *dp, struct nfp_net_r_vector *r_vec,
+		    struct nfp_net_rx_ring *rx_ring,
+		    struct nfp_net_tx_ring *tx_ring,
+		    struct nfp_net_xsk_rx_buf *xrxbuf, unsigned int pkt_len,
+		    int pkt_off)
+{
+	struct xsk_buff_pool *pool = r_vec->xsk_pool;
+	struct nfp_nfd3_tx_buf *txbuf;
+	struct nfp_nfd3_tx_desc *txd;
+	unsigned int wr_idx;
+
+	if (nfp_net_tx_space(tx_ring) < 1)
+		return false;
+
+	xsk_buff_raw_dma_sync_for_device(pool, xrxbuf->dma_addr + pkt_off,
+					 pkt_len);
+
+	wr_idx = D_IDX(tx_ring, tx_ring->wr_p);
+
+	txbuf = &tx_ring->txbufs[wr_idx];
+	txbuf->xdp = xrxbuf->xdp;
+	txbuf->real_len = pkt_len;
+	txbuf->is_xsk_tx = true;
+
+	/* Build TX descriptor */
+	txd = &tx_ring->txds[wr_idx];
+	txd->offset_eop = NFD3_DESC_TX_EOP;
+	txd->dma_len = cpu_to_le16(pkt_len);
+	nfp_desc_set_dma_addr_40b(txd, xrxbuf->dma_addr + pkt_off);
+	txd->data_len = cpu_to_le16(pkt_len);
+
+	txd->flags = 0;
+	txd->mss = 0;
+	txd->lso_hdrlen = 0;
+
+	tx_ring->wr_ptr_add++;
+	tx_ring->wr_p++;
+
+	return true;
+}
+
+static void nfp_nfd3_xsk_rx_skb(struct nfp_net_rx_ring *rx_ring,
+				const struct nfp_net_rx_desc *rxd,
+				struct nfp_net_xsk_rx_buf *xrxbuf,
+				const struct nfp_meta_parsed *meta,
+				unsigned int pkt_len,
+				bool meta_xdp,
+				unsigned int *skbs_polled)
+{
+	struct nfp_net_r_vector *r_vec = rx_ring->r_vec;
+	struct nfp_net_dp *dp = &r_vec->nfp_net->dp;
+	struct net_device *netdev;
+	struct sk_buff *skb;
+
+	if (likely(!meta->portid)) {
+		netdev = dp->netdev;
+	} else {
+		struct nfp_net *nn = netdev_priv(dp->netdev);
+
+		netdev = nfp_app_dev_get(nn->app, meta->portid, NULL);
+		if (unlikely(!netdev)) {
+			nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+			return;
+		}
+		nfp_repr_inc_rx_stats(netdev, pkt_len);
+	}
+
+	skb = napi_alloc_skb(&r_vec->napi, pkt_len);
+	if (!skb) {
+		nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+		return;
+	}
+	skb_put_data(skb, xrxbuf->xdp->data, pkt_len);
+
+	skb->mark = meta->mark;
+	skb_set_hash(skb, meta->hash, meta->hash_type);
+
+	skb_record_rx_queue(skb, rx_ring->idx);
+	skb->protocol = eth_type_trans(skb, netdev);
+
+	nfp_nfd3_rx_csum(dp, r_vec, rxd, meta, skb);
+
+	if (unlikely(!nfp_net_vlan_strip(skb, rxd, meta))) {
+		dev_kfree_skb_any(skb);
+		nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+		return;
+	}
+
+	if (meta_xdp)
+		skb_metadata_set(skb,
+				 xrxbuf->xdp->data - xrxbuf->xdp->data_meta);
+
+	napi_gro_receive(&rx_ring->r_vec->napi, skb);
+
+	nfp_net_xsk_rx_free(xrxbuf);
+
+	(*skbs_polled)++;
+}
+
+static unsigned int
+nfp_nfd3_xsk_rx(struct nfp_net_rx_ring *rx_ring, int budget,
+		unsigned int *skbs_polled)
+{
+	struct nfp_net_r_vector *r_vec = rx_ring->r_vec;
+	struct nfp_net_dp *dp = &r_vec->nfp_net->dp;
+	struct nfp_net_tx_ring *tx_ring;
+	struct bpf_prog *xdp_prog;
+	bool xdp_redir = false;
+	int pkts_polled = 0;
+
+	xdp_prog = READ_ONCE(dp->xdp_prog);
+	tx_ring = r_vec->xdp_ring;
+
+	while (pkts_polled < budget) {
+		unsigned int meta_len, data_len, pkt_len, pkt_off;
+		struct nfp_net_xsk_rx_buf *xrxbuf;
+		struct nfp_net_rx_desc *rxd;
+		struct nfp_meta_parsed meta;
+		int idx, act;
+
+		idx = D_IDX(rx_ring, rx_ring->rd_p);
+
+		rxd = &rx_ring->rxds[idx];
+		if (!(rxd->rxd.meta_len_dd & PCIE_DESC_RX_DD))
+			break;
+
+		rx_ring->rd_p++;
+		pkts_polled++;
+
+		xrxbuf = &rx_ring->xsk_rxbufs[idx];
+
+		/* If starved of buffers "drop" it and scream. */
+		if (rx_ring->rd_p >= rx_ring->wr_p) {
+			nn_dp_warn(dp, "Starved of RX buffers\n");
+			nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+			break;
+		}
+
+		/* Memory barrier to ensure that we won't do other reads
+		 * before the DD bit.
+		 */
+		dma_rmb();
+
+		memset(&meta, 0, sizeof(meta));
+
+		/* Only supporting AF_XDP with dynamic metadata so buffer layout
+		 * is always:
+		 *
+		 *  ---------------------------------------------------------
+		 * |  off | metadata  |             packet           | XXXX  |
+		 *  ---------------------------------------------------------
+		 */
+		meta_len = rxd->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK;
+		data_len = le16_to_cpu(rxd->rxd.data_len);
+		pkt_len = data_len - meta_len;
+
+		if (unlikely(meta_len > NFP_NET_MAX_PREPEND)) {
+			nn_dp_warn(dp, "Oversized RX packet metadata %u\n",
+				   meta_len);
+			nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+			continue;
+		}
+
+		/* Stats update. */
+		u64_stats_update_begin(&r_vec->rx_sync);
+		r_vec->rx_pkts++;
+		r_vec->rx_bytes += pkt_len;
+		u64_stats_update_end(&r_vec->rx_sync);
+
+		xrxbuf->xdp->data += meta_len;
+		xrxbuf->xdp->data_end = xrxbuf->xdp->data + pkt_len;
+		xdp_set_data_meta_invalid(xrxbuf->xdp);
+		xsk_buff_dma_sync_for_cpu(xrxbuf->xdp, r_vec->xsk_pool);
+		net_prefetch(xrxbuf->xdp->data);
+
+		if (meta_len) {
+			if (unlikely(nfp_nfd3_parse_meta(dp->netdev, &meta,
+							 xrxbuf->xdp->data -
+							 meta_len,
+							 xrxbuf->xdp->data,
+							 pkt_len, meta_len))) {
+				nn_dp_warn(dp, "Invalid RX packet metadata\n");
+				nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+				continue;
+			}
+
+			if (unlikely(meta.portid)) {
+				struct nfp_net *nn = netdev_priv(dp->netdev);
+
+				if (meta.portid != NFP_META_PORT_ID_CTRL) {
+					nfp_nfd3_xsk_rx_skb(rx_ring, rxd,
+							    xrxbuf, &meta,
+							    pkt_len, false,
+							    skbs_polled);
+					continue;
+				}
+
+				nfp_app_ctrl_rx_raw(nn->app, xrxbuf->xdp->data,
+						    pkt_len);
+				nfp_net_xsk_rx_free(xrxbuf);
+				continue;
+			}
+		}
+
+		act = bpf_prog_run_xdp(xdp_prog, xrxbuf->xdp);
+
+		pkt_len = xrxbuf->xdp->data_end - xrxbuf->xdp->data;
+		pkt_off = xrxbuf->xdp->data - xrxbuf->xdp->data_hard_start;
+
+		switch (act) {
+		case XDP_PASS:
+			nfp_nfd3_xsk_rx_skb(rx_ring, rxd, xrxbuf, &meta, pkt_len,
+					    true, skbs_polled);
+			break;
+		case XDP_TX:
+			if (!nfp_nfd3_xsk_tx_xdp(dp, r_vec, rx_ring, tx_ring,
+						 xrxbuf, pkt_len, pkt_off))
+				nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+			else
+				nfp_net_xsk_rx_unstash(xrxbuf);
+			break;
+		case XDP_REDIRECT:
+			if (xdp_do_redirect(dp->netdev, xrxbuf->xdp, xdp_prog)) {
+				nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+			} else {
+				nfp_net_xsk_rx_unstash(xrxbuf);
+				xdp_redir = true;
+			}
+			break;
+		default:
+			bpf_warn_invalid_xdp_action(dp->netdev, xdp_prog, act);
+			fallthrough;
+		case XDP_ABORTED:
+			trace_xdp_exception(dp->netdev, xdp_prog, act);
+			fallthrough;
+		case XDP_DROP:
+			nfp_net_xsk_rx_drop(r_vec, xrxbuf);
+			break;
+		}
+	}
+
+	nfp_net_xsk_rx_ring_fill_freelist(r_vec->rx_ring);
+
+	if (xdp_redir)
+		xdp_do_flush_map();
+
+	if (tx_ring->wr_ptr_add)
+		nfp_net_tx_xmit_more_flush(tx_ring);
+
+	return pkts_polled;
+}
+
+void nfp_nfd3_xsk_tx_free(struct nfp_nfd3_tx_buf *txbuf)
+{
+	xsk_buff_free(txbuf->xdp);
+
+	txbuf->dma_addr = 0;
+	txbuf->xdp = NULL;
+}
+
+static bool nfp_nfd3_xsk_complete(struct nfp_net_tx_ring *tx_ring)
+{
+	struct nfp_net_r_vector *r_vec = tx_ring->r_vec;
+	u32 done_pkts = 0, done_bytes = 0, reused = 0;
+	bool done_all;
+	int idx, todo;
+	u32 qcp_rd_p;
+
+	if (tx_ring->wr_p == tx_ring->rd_p)
+		return true;
+
+	/* Work out how many descriptors have been transmitted. */
+	qcp_rd_p = nfp_qcp_rd_ptr_read(tx_ring->qcp_q);
+
+	if (qcp_rd_p == tx_ring->qcp_rd_p)
+		return true;
+
+	todo = D_IDX(tx_ring, qcp_rd_p - tx_ring->qcp_rd_p);
+
+	done_all = todo <= NFP_NET_XDP_MAX_COMPLETE;
+	todo = min(todo, NFP_NET_XDP_MAX_COMPLETE);
+
+	tx_ring->qcp_rd_p = D_IDX(tx_ring, tx_ring->qcp_rd_p + todo);
+
+	done_pkts = todo;
+	while (todo--) {
+		struct nfp_nfd3_tx_buf *txbuf;
+
+		idx = D_IDX(tx_ring, tx_ring->rd_p);
+		tx_ring->rd_p++;
+
+		txbuf = &tx_ring->txbufs[idx];
+		if (unlikely(!txbuf->real_len))
+			continue;
+
+		done_bytes += txbuf->real_len;
+		txbuf->real_len = 0;
+
+		if (txbuf->is_xsk_tx) {
+			nfp_nfd3_xsk_tx_free(txbuf);
+			reused++;
+		}
+	}
+
+	u64_stats_update_begin(&r_vec->tx_sync);
+	r_vec->tx_bytes += done_bytes;
+	r_vec->tx_pkts += done_pkts;
+	u64_stats_update_end(&r_vec->tx_sync);
+
+	xsk_tx_completed(r_vec->xsk_pool, done_pkts - reused);
+
+	WARN_ONCE(tx_ring->wr_p - tx_ring->rd_p > tx_ring->cnt,
+		  "XDP TX ring corruption rd_p=%u wr_p=%u cnt=%u\n",
+		  tx_ring->rd_p, tx_ring->wr_p, tx_ring->cnt);
+
+	return done_all;
+}
+
+static void nfp_nfd3_xsk_tx(struct nfp_net_tx_ring *tx_ring)
+{
+	struct nfp_net_r_vector *r_vec = tx_ring->r_vec;
+	struct xdp_desc desc[NFP_NET_XSK_TX_BATCH];
+	struct xsk_buff_pool *xsk_pool;
+	struct nfp_nfd3_tx_desc *txd;
+	u32 pkts = 0, wr_idx;
+	u32 i, got;
+
+	xsk_pool = r_vec->xsk_pool;
+
+	while (nfp_net_tx_space(tx_ring) >= NFP_NET_XSK_TX_BATCH) {
+		for (i = 0; i < NFP_NET_XSK_TX_BATCH; i++)
+			if (!xsk_tx_peek_desc(xsk_pool, &desc[i]))
+				break;
+		got = i;
+		if (!got)
+			break;
+
+		wr_idx = D_IDX(tx_ring, tx_ring->wr_p + i);
+		prefetchw(&tx_ring->txds[wr_idx]);
+
+		for (i = 0; i < got; i++)
+			xsk_buff_raw_dma_sync_for_device(xsk_pool, desc[i].addr,
+							 desc[i].len);
+
+		for (i = 0; i < got; i++) {
+			wr_idx = D_IDX(tx_ring, tx_ring->wr_p + i);
+
+			tx_ring->txbufs[wr_idx].real_len = desc[i].len;
+			tx_ring->txbufs[wr_idx].is_xsk_tx = false;
+
+			/* Build TX descriptor. */
+			txd = &tx_ring->txds[wr_idx];
+			nfp_desc_set_dma_addr_40b(txd,
+						  xsk_buff_raw_get_dma(xsk_pool, desc[i].addr));
+			txd->offset_eop = NFD3_DESC_TX_EOP;
+			txd->dma_len = cpu_to_le16(desc[i].len);
+			txd->data_len = cpu_to_le16(desc[i].len);
+		}
+
+		tx_ring->wr_p += got;
+		pkts += got;
+	}
+
+	if (!pkts)
+		return;
+
+	xsk_tx_release(xsk_pool);
+	/* Ensure all records are visible before incrementing write counter. */
+	wmb();
+	nfp_qcp_wr_ptr_add(tx_ring->qcp_q, pkts);
+}
+
+int nfp_nfd3_xsk_poll(struct napi_struct *napi, int budget)
+{
+	struct nfp_net_r_vector *r_vec =
+		container_of(napi, struct nfp_net_r_vector, napi);
+	unsigned int pkts_polled, skbs = 0;
+
+	pkts_polled = nfp_nfd3_xsk_rx(r_vec->rx_ring, budget, &skbs);
+
+	if (pkts_polled < budget) {
+		if (r_vec->tx_ring)
+			nfp_nfd3_tx_complete(r_vec->tx_ring, budget);
+
+		if (!nfp_nfd3_xsk_complete(r_vec->xdp_ring))
+			pkts_polled = budget;
+
+		nfp_nfd3_xsk_tx(r_vec->xdp_ring);
+
+		if (pkts_polled < budget && napi_complete_done(napi, skbs))
+			nfp_net_irq_unmask(r_vec->nfp_net, r_vec->irq_entry);
+	}
+
+	return pkts_polled;
+}