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(). ... --- .../net/ethernet/cavium/liquidio/octeon_network.h | 626 +++++++++++++++++++++ 1 file changed, 626 insertions(+) create mode 100644 drivers/net/ethernet/cavium/liquidio/octeon_network.h (limited to 'drivers/net/ethernet/cavium/liquidio/octeon_network.h') diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_network.h b/drivers/net/ethernet/cavium/liquidio/octeon_network.h new file mode 100644 index 000000000..ebe56bd88 --- /dev/null +++ b/drivers/net/ethernet/cavium/liquidio/octeon_network.h @@ -0,0 +1,626 @@ +/********************************************************************** + * Author: Cavium, Inc. + * + * Contact: support@cavium.com + * Please include "LiquidIO" in the subject. + * + * Copyright (c) 2003-2016 Cavium, Inc. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, Version 2, as + * published by the Free Software Foundation. + * + * This file is distributed in the hope that it will be useful, but + * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or + * NONINFRINGEMENT. See the GNU General Public License for more + * details. + **********************************************************************/ + +/*! \file octeon_network.h + * \brief Host NIC Driver: Structure and Macro definitions used by NIC Module. + */ + +#ifndef __OCTEON_NETWORK_H__ +#define __OCTEON_NETWORK_H__ +#include + +#define LIO_MAX_MTU_SIZE (OCTNET_MAX_FRM_SIZE - OCTNET_FRM_HEADER_SIZE) +#define LIO_MIN_MTU_SIZE ETH_MIN_MTU + +/* Bit mask values for lio->ifstate */ +#define LIO_IFSTATE_DROQ_OPS 0x01 +#define LIO_IFSTATE_REGISTERED 0x02 +#define LIO_IFSTATE_RUNNING 0x04 +#define LIO_IFSTATE_RX_TIMESTAMP_ENABLED 0x08 +#define LIO_IFSTATE_RESETTING 0x10 + +struct liquidio_if_cfg_resp { + u64 rh; + struct liquidio_if_cfg_info cfg_info; + u64 status; +}; + +#define LIO_IFCFG_WAIT_TIME 3000 /* In milli seconds */ +#define LIQUIDIO_NDEV_STATS_POLL_TIME_MS 200 + +/* Structure of a node in list of gather components maintained by + * NIC driver for each network device. + */ +struct octnic_gather { + /* List manipulation. Next and prev pointers. */ + struct list_head list; + + /* Size of the gather component at sg in bytes. */ + int sg_size; + + /* Number of bytes that sg was adjusted to make it 8B-aligned. */ + int adjust; + + /* Gather component that can accommodate max sized fragment list + * received from the IP layer. + */ + struct octeon_sg_entry *sg; + + dma_addr_t sg_dma_ptr; +}; + +struct oct_nic_stats_resp { + u64 rh; + struct oct_link_stats stats; + u64 status; +}; + +struct oct_nic_vf_stats_resp { + u64 rh; + u64 spoofmac_cnt; + u64 status; +}; + +struct oct_nic_stats_ctrl { + struct completion complete; + struct net_device *netdev; +}; + +struct oct_nic_seapi_resp { + u64 rh; + union { + u32 fec_setting; + u32 speed; + }; + u64 status; +}; + +/** LiquidIO per-interface network private data */ +struct lio { + /** State of the interface. Rx/Tx happens only in the RUNNING state. */ + atomic_t ifstate; + + /** Octeon Interface index number. This device will be represented as + * oct in the system. + */ + int ifidx; + + /** Octeon Input queue to use to transmit for this network interface. */ + int txq; + + /** Octeon Output queue from which pkts arrive + * for this network interface. + */ + int rxq; + + /** Guards each glist */ + spinlock_t *glist_lock; + + /** Array of gather component linked lists */ + struct list_head *glist; + void **glists_virt_base; + dma_addr_t *glists_dma_base; + u32 glist_entry_size; + + /** Pointer to the NIC properties for the Octeon device this network + * interface is associated with. + */ + struct octdev_props *octprops; + + /** Pointer to the octeon device structure. */ + struct octeon_device *oct_dev; + + struct net_device *netdev; + + /** Link information sent by the core application for this interface. */ + struct oct_link_info linfo; + + /** counter of link changes */ + u64 link_changes; + + /** Size of Tx queue for this octeon device. */ + u32 tx_qsize; + + /** Size of Rx queue for this octeon device. */ + u32 rx_qsize; + + /** Size of MTU this octeon device. */ + u32 mtu; + + /** msg level flag per interface. */ + u32 msg_enable; + + /** Copy of Interface capabilities: TSO, TSO6, LRO, Chescksums . */ + u64 dev_capability; + + /* Copy of transmit encapsulation capabilities: + * TSO, TSO6, Checksums for this device for Kernel + * 3.10.0 onwards + */ + u64 enc_dev_capability; + + /** Copy of beacaon reg in phy */ + u32 phy_beacon_val; + + /** Copy of ctrl reg in phy */ + u32 led_ctrl_val; + + /* PTP clock information */ + struct ptp_clock_info ptp_info; + struct ptp_clock *ptp_clock; + s64 ptp_adjust; + + /* for atomic access to Octeon PTP reg and data struct */ + spinlock_t ptp_lock; + + /* Interface info */ + u32 intf_open; + + /* work queue for txq status */ + struct cavium_wq txq_status_wq; + + /* work queue for rxq oom status */ + struct cavium_wq rxq_status_wq[MAX_POSSIBLE_OCTEON_OUTPUT_QUEUES]; + + /* work queue for link status */ + struct cavium_wq link_status_wq; + + /* work queue to regularly send local time to octeon firmware */ + struct cavium_wq sync_octeon_time_wq; + + int netdev_uc_count; + struct cavium_wk stats_wk; +}; + +#define LIO_SIZE (sizeof(struct lio)) +#define GET_LIO(netdev) ((struct lio *)netdev_priv(netdev)) + +#define LIO_MAX_CORES 16 + +/** + * \brief Enable or disable feature + * @param netdev pointer to network device + * @param cmd Command that just requires acknowledgment + * @param param1 Parameter to command + */ +int liquidio_set_feature(struct net_device *netdev, int cmd, u16 param1); + +int setup_rx_oom_poll_fn(struct net_device *netdev); + +void cleanup_rx_oom_poll_fn(struct net_device *netdev); + +/** + * \brief Link control command completion callback + * @param nctrl_ptr pointer to control packet structure + * + * This routine is called by the callback function when a ctrl pkt sent to + * core app completes. The nctrl_ptr contains a copy of the command type + * and data sent to the core app. This routine is only called if the ctrl + * pkt was sent successfully to the core app. + */ +void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr); + +int liquidio_setup_io_queues(struct octeon_device *octeon_dev, int ifidx, + u32 num_iqs, u32 num_oqs); + +irqreturn_t liquidio_msix_intr_handler(int irq __attribute__((unused)), + void *dev); + +int octeon_setup_interrupt(struct octeon_device *oct, u32 num_ioqs); + +void lio_fetch_stats(struct work_struct *work); + +int lio_wait_for_clean_oq(struct octeon_device *oct); +/** + * \brief Register ethtool operations + * @param netdev pointer to network device + */ +void liquidio_set_ethtool_ops(struct net_device *netdev); + +void lio_delete_glists(struct lio *lio); + +int lio_setup_glists(struct octeon_device *oct, struct lio *lio, int num_qs); + +int liquidio_get_speed(struct lio *lio); +int liquidio_set_speed(struct lio *lio, int speed); +int liquidio_get_fec(struct lio *lio); +int liquidio_set_fec(struct lio *lio, int on_off); + +/** + * \brief Net device change_mtu + * @param netdev network device + */ +int liquidio_change_mtu(struct net_device *netdev, int new_mtu); +#define LIO_CHANGE_MTU_SUCCESS 1 +#define LIO_CHANGE_MTU_FAIL 2 + +#define SKB_ADJ_MASK 0x3F +#define SKB_ADJ (SKB_ADJ_MASK + 1) + +#define MIN_SKB_SIZE 256 /* 8 bytes and more - 8 bytes for PTP */ +#define LIO_RXBUFFER_SZ 2048 + +static inline void +*recv_buffer_alloc(struct octeon_device *oct, + struct octeon_skb_page_info *pg_info) +{ + struct page *page; + struct sk_buff *skb; + struct octeon_skb_page_info *skb_pg_info; + + page = alloc_page(GFP_ATOMIC); + if (unlikely(!page)) + return NULL; + + skb = dev_alloc_skb(MIN_SKB_SIZE + SKB_ADJ); + if (unlikely(!skb)) { + __free_page(page); + pg_info->page = NULL; + return NULL; + } + + if ((unsigned long)skb->data & SKB_ADJ_MASK) { + u32 r = SKB_ADJ - ((unsigned long)skb->data & SKB_ADJ_MASK); + + skb_reserve(skb, r); + } + + skb_pg_info = ((struct octeon_skb_page_info *)(skb->cb)); + /* Get DMA info */ + pg_info->dma = dma_map_page(&oct->pci_dev->dev, page, 0, + PAGE_SIZE, DMA_FROM_DEVICE); + + /* Mapping failed!! */ + if (dma_mapping_error(&oct->pci_dev->dev, pg_info->dma)) { + __free_page(page); + dev_kfree_skb_any((struct sk_buff *)skb); + pg_info->page = NULL; + return NULL; + } + + pg_info->page = page; + pg_info->page_offset = 0; + skb_pg_info->page = page; + skb_pg_info->page_offset = 0; + skb_pg_info->dma = pg_info->dma; + + return (void *)skb; +} + +static inline void +*recv_buffer_fast_alloc(u32 size) +{ + struct sk_buff *skb; + struct octeon_skb_page_info *skb_pg_info; + + skb = dev_alloc_skb(size + SKB_ADJ); + if (unlikely(!skb)) + return NULL; + + if ((unsigned long)skb->data & SKB_ADJ_MASK) { + u32 r = SKB_ADJ - ((unsigned long)skb->data & SKB_ADJ_MASK); + + skb_reserve(skb, r); + } + + skb_pg_info = ((struct octeon_skb_page_info *)(skb->cb)); + skb_pg_info->page = NULL; + skb_pg_info->page_offset = 0; + skb_pg_info->dma = 0; + + return skb; +} + +static inline int +recv_buffer_recycle(struct octeon_device *oct, void *buf) +{ + struct octeon_skb_page_info *pg_info = buf; + + if (!pg_info->page) { + dev_err(&oct->pci_dev->dev, "%s: pg_info->page NULL\n", + __func__); + return -ENOMEM; + } + + if (unlikely(page_count(pg_info->page) != 1) || + unlikely(page_to_nid(pg_info->page) != numa_node_id())) { + dma_unmap_page(&oct->pci_dev->dev, + pg_info->dma, (PAGE_SIZE << 0), + DMA_FROM_DEVICE); + pg_info->dma = 0; + pg_info->page = NULL; + pg_info->page_offset = 0; + return -ENOMEM; + } + + /* Flip to other half of the buffer */ + if (pg_info->page_offset == 0) + pg_info->page_offset = LIO_RXBUFFER_SZ; + else + pg_info->page_offset = 0; + page_ref_inc(pg_info->page); + + return 0; +} + +static inline void +*recv_buffer_reuse(struct octeon_device *oct, void *buf) +{ + struct octeon_skb_page_info *pg_info = buf, *skb_pg_info; + struct sk_buff *skb; + + skb = dev_alloc_skb(MIN_SKB_SIZE + SKB_ADJ); + if (unlikely(!skb)) { + dma_unmap_page(&oct->pci_dev->dev, + pg_info->dma, (PAGE_SIZE << 0), + DMA_FROM_DEVICE); + return NULL; + } + + if ((unsigned long)skb->data & SKB_ADJ_MASK) { + u32 r = SKB_ADJ - ((unsigned long)skb->data & SKB_ADJ_MASK); + + skb_reserve(skb, r); + } + + skb_pg_info = ((struct octeon_skb_page_info *)(skb->cb)); + skb_pg_info->page = pg_info->page; + skb_pg_info->page_offset = pg_info->page_offset; + skb_pg_info->dma = pg_info->dma; + + return skb; +} + +static inline void +recv_buffer_destroy(void *buffer, struct octeon_skb_page_info *pg_info) +{ + struct sk_buff *skb = (struct sk_buff *)buffer; + + put_page(pg_info->page); + pg_info->dma = 0; + pg_info->page = NULL; + pg_info->page_offset = 0; + + if (skb) + dev_kfree_skb_any(skb); +} + +static inline void recv_buffer_free(void *buffer) +{ + struct sk_buff *skb = (struct sk_buff *)buffer; + struct octeon_skb_page_info *pg_info; + + pg_info = ((struct octeon_skb_page_info *)(skb->cb)); + + if (pg_info->page) { + put_page(pg_info->page); + pg_info->dma = 0; + pg_info->page = NULL; + pg_info->page_offset = 0; + } + + dev_kfree_skb_any((struct sk_buff *)buffer); +} + +static inline void +recv_buffer_fast_free(void *buffer) +{ + dev_kfree_skb_any((struct sk_buff *)buffer); +} + +static inline void tx_buffer_free(void *buffer) +{ + dev_kfree_skb_any((struct sk_buff *)buffer); +} + +#define lio_dma_alloc(oct, size, dma_addr) \ + dma_alloc_coherent(&(oct)->pci_dev->dev, size, dma_addr, GFP_KERNEL) +#define lio_dma_free(oct, size, virt_addr, dma_addr) \ + dma_free_coherent(&(oct)->pci_dev->dev, size, virt_addr, dma_addr) + +static inline +void *get_rbd(struct sk_buff *skb) +{ + struct octeon_skb_page_info *pg_info; + unsigned char *va; + + pg_info = ((struct octeon_skb_page_info *)(skb->cb)); + va = page_address(pg_info->page) + pg_info->page_offset; + + return va; +} + +static inline u64 +lio_map_ring(void *buf) +{ + dma_addr_t dma_addr; + + struct sk_buff *skb = (struct sk_buff *)buf; + struct octeon_skb_page_info *pg_info; + + pg_info = ((struct octeon_skb_page_info *)(skb->cb)); + if (!pg_info->page) { + pr_err("%s: pg_info->page NULL\n", __func__); + WARN_ON(1); + } + + /* Get DMA info */ + dma_addr = pg_info->dma; + if (!pg_info->dma) { + pr_err("%s: ERROR it should be already available\n", + __func__); + WARN_ON(1); + } + dma_addr += pg_info->page_offset; + + return (u64)dma_addr; +} + +static inline void +lio_unmap_ring(struct pci_dev *pci_dev, + u64 buf_ptr) + +{ + dma_unmap_page(&pci_dev->dev, + buf_ptr, (PAGE_SIZE << 0), + DMA_FROM_DEVICE); +} + +static inline void *octeon_fast_packet_alloc(u32 size) +{ + return recv_buffer_fast_alloc(size); +} + +static inline void octeon_fast_packet_next(struct octeon_droq *droq, + struct sk_buff *nicbuf, + int copy_len, + int idx) +{ + skb_put_data(nicbuf, get_rbd(droq->recv_buf_list[idx].buffer), + copy_len); +} + +/** + * \brief check interface state + * @param lio per-network private data + * @param state_flag flag state to check + */ +static inline int ifstate_check(struct lio *lio, int state_flag) +{ + return atomic_read(&lio->ifstate) & state_flag; +} + +/** + * \brief set interface state + * @param lio per-network private data + * @param state_flag flag state to set + */ +static inline void ifstate_set(struct lio *lio, int state_flag) +{ + atomic_set(&lio->ifstate, (atomic_read(&lio->ifstate) | state_flag)); +} + +/** + * \brief clear interface state + * @param lio per-network private data + * @param state_flag flag state to clear + */ +static inline void ifstate_reset(struct lio *lio, int state_flag) +{ + atomic_set(&lio->ifstate, (atomic_read(&lio->ifstate) & ~(state_flag))); +} + +/** + * \brief wait for all pending requests to complete + * @param oct Pointer to Octeon device + * + * Called during shutdown sequence + */ +static inline int wait_for_pending_requests(struct octeon_device *oct) +{ + int i, pcount = 0; + + for (i = 0; i < MAX_IO_PENDING_PKT_COUNT; i++) { + pcount = atomic_read( + &oct->response_list[OCTEON_ORDERED_SC_LIST] + .pending_req_count); + if (pcount) + schedule_timeout_uninterruptible(HZ / 10); + else + break; + } + + if (pcount) + return 1; + + return 0; +} + +/** + * \brief Stop Tx queues + * @param netdev network device + */ +static inline void stop_txqs(struct net_device *netdev) +{ + int i; + + for (i = 0; i < netdev->real_num_tx_queues; i++) + netif_stop_subqueue(netdev, i); +} + +/** + * \brief Wake Tx queues + * @param netdev network device + */ +static inline void wake_txqs(struct net_device *netdev) +{ + struct lio *lio = GET_LIO(netdev); + int i, qno; + + for (i = 0; i < netdev->real_num_tx_queues; i++) { + qno = lio->linfo.txpciq[i % lio->oct_dev->num_iqs].s.q_no; + + if (__netif_subqueue_stopped(netdev, i)) { + INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, qno, + tx_restart, 1); + netif_wake_subqueue(netdev, i); + } + } +} + +/** + * \brief Start Tx queues + * @param netdev network device + */ +static inline void start_txqs(struct net_device *netdev) +{ + struct lio *lio = GET_LIO(netdev); + int i; + + if (lio->linfo.link.s.link_up) { + for (i = 0; i < netdev->real_num_tx_queues; i++) + netif_start_subqueue(netdev, i); + } +} + +static inline int skb_iq(struct octeon_device *oct, struct sk_buff *skb) +{ + return skb->queue_mapping % oct->num_iqs; +} + +/** + * Remove the node at the head of the list. The list would be empty at + * the end of this call if there are no more nodes in the list. + */ +static inline struct list_head *lio_list_delete_head(struct list_head *root) +{ + struct list_head *node; + + if (list_empty_careful(root)) + node = NULL; + else + node = root->next; + + if (node) + list_del(node); + + return node; +} + +#endif -- cgit v1.2.3