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/amazon/ena/ena_netdev.h | 453 +++++++++++++++++++++++++++ 1 file changed, 453 insertions(+) create mode 100644 drivers/net/ethernet/amazon/ena/ena_netdev.h (limited to 'drivers/net/ethernet/amazon/ena/ena_netdev.h') diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h new file mode 100644 index 000000000..2cb141079 --- /dev/null +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -0,0 +1,453 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* + * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved. + */ + +#ifndef ENA_H +#define ENA_H + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ena_com.h" +#include "ena_eth_com.h" + +#define DRV_MODULE_GEN_MAJOR 2 +#define DRV_MODULE_GEN_MINOR 1 +#define DRV_MODULE_GEN_SUBMINOR 0 + +#define DRV_MODULE_NAME "ena" + +#define DEVICE_NAME "Elastic Network Adapter (ENA)" + +/* 1 for AENQ + ADMIN */ +#define ENA_ADMIN_MSIX_VEC 1 +#define ENA_MAX_MSIX_VEC(io_queues) (ENA_ADMIN_MSIX_VEC + (io_queues)) + +/* The ENA buffer length fields is 16 bit long. So when PAGE_SIZE == 64kB the + * driver passes 0. + * Since the max packet size the ENA handles is ~9kB limit the buffer length to + * 16kB. + */ +#if PAGE_SIZE > SZ_16K +#define ENA_PAGE_SIZE (_AC(SZ_16K, UL)) +#else +#define ENA_PAGE_SIZE PAGE_SIZE +#endif + +#define ENA_MIN_MSIX_VEC 2 + +#define ENA_REG_BAR 0 +#define ENA_MEM_BAR 2 +#define ENA_BAR_MASK (BIT(ENA_REG_BAR) | BIT(ENA_MEM_BAR)) + +#define ENA_DEFAULT_RING_SIZE (1024) +#define ENA_MIN_RING_SIZE (256) + +#define ENA_MIN_NUM_IO_QUEUES (1) + +#define ENA_TX_WAKEUP_THRESH (MAX_SKB_FRAGS + 2) +#define ENA_DEFAULT_RX_COPYBREAK (256 - NET_IP_ALIGN) + +#define ENA_MIN_MTU 128 + +#define ENA_NAME_MAX_LEN 20 +#define ENA_IRQNAME_SIZE 40 + +#define ENA_PKT_MAX_BUFS 19 + +#define ENA_RX_RSS_TABLE_LOG_SIZE 7 +#define ENA_RX_RSS_TABLE_SIZE (1 << ENA_RX_RSS_TABLE_LOG_SIZE) + +/* The number of tx packet completions that will be handled each NAPI poll + * cycle is ring_size / ENA_TX_POLL_BUDGET_DIVIDER. + */ +#define ENA_TX_POLL_BUDGET_DIVIDER 4 + +/* Refill Rx queue when number of required descriptors is above + * QUEUE_SIZE / ENA_RX_REFILL_THRESH_DIVIDER or ENA_RX_REFILL_THRESH_PACKET + */ +#define ENA_RX_REFILL_THRESH_DIVIDER 8 +#define ENA_RX_REFILL_THRESH_PACKET 256 + +/* Number of queues to check for missing queues per timer service */ +#define ENA_MONITORED_TX_QUEUES 4 +/* Max timeout packets before device reset */ +#define MAX_NUM_OF_TIMEOUTED_PACKETS 128 + +#define ENA_TX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) + +#define ENA_RX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) +#define ENA_RX_RING_IDX_ADD(idx, n, ring_size) \ + (((idx) + (n)) & ((ring_size) - 1)) + +#define ENA_IO_TXQ_IDX(q) (2 * (q)) +#define ENA_IO_RXQ_IDX(q) (2 * (q) + 1) +#define ENA_IO_TXQ_IDX_TO_COMBINED_IDX(q) ((q) / 2) +#define ENA_IO_RXQ_IDX_TO_COMBINED_IDX(q) (((q) - 1) / 2) + +#define ENA_MGMNT_IRQ_IDX 0 +#define ENA_IO_IRQ_FIRST_IDX 1 +#define ENA_IO_IRQ_IDX(q) (ENA_IO_IRQ_FIRST_IDX + (q)) + +#define ENA_ADMIN_POLL_DELAY_US 100 + +/* ENA device should send keep alive msg every 1 sec. + * We wait for 6 sec just to be on the safe side. + */ +#define ENA_DEVICE_KALIVE_TIMEOUT (6 * HZ) +#define ENA_MAX_NO_INTERRUPT_ITERATIONS 3 + +#define ENA_MMIO_DISABLE_REG_READ BIT(0) + +/* The max MTU size is configured to be the ethernet frame size without + * the overhead of the ethernet header, which can have a VLAN header, and + * a frame check sequence (FCS). + * The buffer size we share with the device is defined to be ENA_PAGE_SIZE + */ + +#define ENA_XDP_MAX_MTU (ENA_PAGE_SIZE - ETH_HLEN - ETH_FCS_LEN - \ + VLAN_HLEN - XDP_PACKET_HEADROOM - \ + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) + +#define ENA_IS_XDP_INDEX(adapter, index) (((index) >= (adapter)->xdp_first_ring) && \ + ((index) < (adapter)->xdp_first_ring + (adapter)->xdp_num_queues)) + +struct ena_irq { + irq_handler_t handler; + void *data; + int cpu; + u32 vector; + cpumask_t affinity_hint_mask; + char name[ENA_IRQNAME_SIZE]; +}; + +struct ena_napi { + u8 first_interrupt ____cacheline_aligned; + u8 interrupts_masked; + struct napi_struct napi; + struct ena_ring *tx_ring; + struct ena_ring *rx_ring; + struct ena_ring *xdp_ring; + u32 qid; + struct dim dim; +}; + +struct ena_tx_buffer { + struct sk_buff *skb; + /* num of ena desc for this specific skb + * (includes data desc and metadata desc) + */ + u32 tx_descs; + /* num of buffers used by this skb */ + u32 num_of_bufs; + + /* XDP buffer structure which is used for sending packets in + * the xdp queues + */ + struct xdp_frame *xdpf; + + /* Indicate if bufs[0] map the linear data of the skb. */ + u8 map_linear_data; + + /* Used for detect missing tx packets to limit the number of prints */ + u32 print_once; + /* Save the last jiffies to detect missing tx packets + * + * sets to non zero value on ena_start_xmit and set to zero on + * napi and timer_Service_routine. + * + * while this value is not protected by lock, + * a given packet is not expected to be handled by ena_start_xmit + * and by napi/timer_service at the same time. + */ + unsigned long last_jiffies; + struct ena_com_buf bufs[ENA_PKT_MAX_BUFS]; +} ____cacheline_aligned; + +struct ena_rx_buffer { + struct sk_buff *skb; + struct page *page; + u32 page_offset; + struct ena_com_buf ena_buf; +} ____cacheline_aligned; + +struct ena_stats_tx { + u64 cnt; + u64 bytes; + u64 queue_stop; + u64 prepare_ctx_err; + u64 queue_wakeup; + u64 dma_mapping_err; + u64 linearize; + u64 linearize_failed; + u64 napi_comp; + u64 tx_poll; + u64 doorbells; + u64 bad_req_id; + u64 llq_buffer_copy; + u64 missed_tx; + u64 unmask_interrupt; + u64 last_napi_jiffies; +}; + +struct ena_stats_rx { + u64 cnt; + u64 bytes; + u64 rx_copybreak_pkt; + u64 csum_good; + u64 refil_partial; + u64 csum_bad; + u64 page_alloc_fail; + u64 skb_alloc_fail; + u64 dma_mapping_err; + u64 bad_desc_num; + u64 bad_req_id; + u64 empty_rx_ring; + u64 csum_unchecked; + u64 xdp_aborted; + u64 xdp_drop; + u64 xdp_pass; + u64 xdp_tx; + u64 xdp_invalid; + u64 xdp_redirect; +}; + +struct ena_ring { + /* Holds the empty requests for TX/RX + * out of order completions + */ + u16 *free_ids; + + union { + struct ena_tx_buffer *tx_buffer_info; + struct ena_rx_buffer *rx_buffer_info; + }; + + /* cache ptr to avoid using the adapter */ + struct device *dev; + struct pci_dev *pdev; + struct napi_struct *napi; + struct net_device *netdev; + struct ena_com_dev *ena_dev; + struct ena_adapter *adapter; + struct ena_com_io_cq *ena_com_io_cq; + struct ena_com_io_sq *ena_com_io_sq; + struct bpf_prog *xdp_bpf_prog; + struct xdp_rxq_info xdp_rxq; + spinlock_t xdp_tx_lock; /* synchronize XDP TX/Redirect traffic */ + /* Used for rx queues only to point to the xdp tx ring, to + * which traffic should be redirected from this rx ring. + */ + struct ena_ring *xdp_ring; + + u16 next_to_use; + u16 next_to_clean; + u16 rx_copybreak; + u16 rx_headroom; + u16 qid; + u16 mtu; + u16 sgl_size; + + /* The maximum header length the device can handle */ + u8 tx_max_header_size; + + bool disable_meta_caching; + u16 no_interrupt_event_cnt; + + /* cpu and NUMA for TPH */ + int cpu; + int numa_node; + + /* number of tx/rx_buffer_info's entries */ + int ring_size; + + enum ena_admin_placement_policy_type tx_mem_queue_type; + + struct ena_com_rx_buf_info ena_bufs[ENA_PKT_MAX_BUFS]; + u32 smoothed_interval; + u32 per_napi_packets; + u16 non_empty_napi_events; + struct u64_stats_sync syncp; + union { + struct ena_stats_tx tx_stats; + struct ena_stats_rx rx_stats; + }; + + u8 *push_buf_intermediate_buf; + int empty_rx_queue; +} ____cacheline_aligned; + +struct ena_stats_dev { + u64 tx_timeout; + u64 suspend; + u64 resume; + u64 wd_expired; + u64 interface_up; + u64 interface_down; + u64 admin_q_pause; + u64 rx_drops; + u64 tx_drops; +}; + +enum ena_flags_t { + ENA_FLAG_DEVICE_RUNNING, + ENA_FLAG_DEV_UP, + ENA_FLAG_LINK_UP, + ENA_FLAG_MSIX_ENABLED, + ENA_FLAG_TRIGGER_RESET, + ENA_FLAG_ONGOING_RESET +}; + +/* adapter specific private data structure */ +struct ena_adapter { + struct ena_com_dev *ena_dev; + /* OS defined structs */ + struct net_device *netdev; + struct pci_dev *pdev; + + /* rx packets that shorter that this len will be copied to the skb + * header + */ + u32 rx_copybreak; + u32 max_mtu; + + u32 num_io_queues; + u32 max_num_io_queues; + + int msix_vecs; + + u32 missing_tx_completion_threshold; + + u32 requested_tx_ring_size; + u32 requested_rx_ring_size; + + u32 max_tx_ring_size; + u32 max_rx_ring_size; + + u32 msg_enable; + + u16 max_tx_sgl_size; + u16 max_rx_sgl_size; + + u8 mac_addr[ETH_ALEN]; + + unsigned long keep_alive_timeout; + unsigned long missing_tx_completion_to; + + char name[ENA_NAME_MAX_LEN]; + + unsigned long flags; + /* TX */ + struct ena_ring tx_ring[ENA_MAX_NUM_IO_QUEUES] + ____cacheline_aligned_in_smp; + + /* RX */ + struct ena_ring rx_ring[ENA_MAX_NUM_IO_QUEUES] + ____cacheline_aligned_in_smp; + + struct ena_napi ena_napi[ENA_MAX_NUM_IO_QUEUES]; + + struct ena_irq irq_tbl[ENA_MAX_MSIX_VEC(ENA_MAX_NUM_IO_QUEUES)]; + + /* timer service */ + struct work_struct reset_task; + struct timer_list timer_service; + + bool wd_state; + bool dev_up_before_reset; + bool disable_meta_caching; + unsigned long last_keep_alive_jiffies; + + struct u64_stats_sync syncp; + struct ena_stats_dev dev_stats; + struct ena_admin_eni_stats eni_stats; + + /* last queue index that was checked for uncompleted tx packets */ + u32 last_monitored_tx_qid; + + enum ena_regs_reset_reason_types reset_reason; + + struct bpf_prog *xdp_bpf_prog; + u32 xdp_first_ring; + u32 xdp_num_queues; +}; + +void ena_set_ethtool_ops(struct net_device *netdev); + +void ena_dump_stats_to_dmesg(struct ena_adapter *adapter); + +void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf); + +int ena_update_hw_stats(struct ena_adapter *adapter); + +int ena_update_queue_sizes(struct ena_adapter *adapter, + u32 new_tx_size, + u32 new_rx_size); + +int ena_update_queue_count(struct ena_adapter *adapter, u32 new_channel_count); + +int ena_set_rx_copybreak(struct ena_adapter *adapter, u32 rx_copybreak); + +int ena_get_sset_count(struct net_device *netdev, int sset); + +static inline void ena_reset_device(struct ena_adapter *adapter, + enum ena_regs_reset_reason_types reset_reason) +{ + adapter->reset_reason = reset_reason; + /* Make sure reset reason is set before triggering the reset */ + smp_mb__before_atomic(); + set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); +} + +enum ena_xdp_errors_t { + ENA_XDP_ALLOWED = 0, + ENA_XDP_CURRENT_MTU_TOO_LARGE, + ENA_XDP_NO_ENOUGH_QUEUES, +}; + +enum ENA_XDP_ACTIONS { + ENA_XDP_PASS = 0, + ENA_XDP_TX = BIT(0), + ENA_XDP_REDIRECT = BIT(1), + ENA_XDP_DROP = BIT(2) +}; + +#define ENA_XDP_FORWARDED (ENA_XDP_TX | ENA_XDP_REDIRECT) + +static inline bool ena_xdp_present(struct ena_adapter *adapter) +{ + return !!adapter->xdp_bpf_prog; +} + +static inline bool ena_xdp_present_ring(struct ena_ring *ring) +{ + return !!ring->xdp_bpf_prog; +} + +static inline bool ena_xdp_legal_queue_count(struct ena_adapter *adapter, + u32 queues) +{ + return 2 * queues <= adapter->max_num_io_queues; +} + +static inline enum ena_xdp_errors_t ena_xdp_allowed(struct ena_adapter *adapter) +{ + enum ena_xdp_errors_t rc = ENA_XDP_ALLOWED; + + if (adapter->netdev->mtu > ENA_XDP_MAX_MTU) + rc = ENA_XDP_CURRENT_MTU_TOO_LARGE; + else if (!ena_xdp_legal_queue_count(adapter, adapter->num_io_queues)) + rc = ENA_XDP_NO_ENOUGH_QUEUES; + + return rc; +} + +#endif /* !(ENA_H) */ -- cgit v1.2.3