| /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ |
| /* Copyright (C) 2015-2018 Netronome Systems, Inc. */ |
| |
| /* |
| * nfp_net.h |
| * Declarations for Netronome network device driver. |
| * Authors: Jakub Kicinski <jakub.kicinski@netronome.com> |
| * Jason McMullan <jason.mcmullan@netronome.com> |
| * Rolf Neugebauer <rolf.neugebauer@netronome.com> |
| */ |
| |
| #ifndef _NFP_NET_H_ |
| #define _NFP_NET_H_ |
| |
| #include <linux/atomic.h> |
| #include <linux/interrupt.h> |
| #include <linux/list.h> |
| #include <linux/netdevice.h> |
| #include <linux/pci.h> |
| #include <linux/dim.h> |
| #include <linux/io-64-nonatomic-hi-lo.h> |
| #include <linux/semaphore.h> |
| #include <linux/workqueue.h> |
| #include <net/xdp.h> |
| |
| #include "nfp_net_ctrl.h" |
| |
| #define nn_pr(nn, lvl, fmt, args...) \ |
| ({ \ |
| struct nfp_net *__nn = (nn); \ |
| \ |
| if (__nn->dp.netdev) \ |
| netdev_printk(lvl, __nn->dp.netdev, fmt, ## args); \ |
| else \ |
| dev_printk(lvl, __nn->dp.dev, "ctrl: " fmt, ## args); \ |
| }) |
| |
| #define nn_err(nn, fmt, args...) nn_pr(nn, KERN_ERR, fmt, ## args) |
| #define nn_warn(nn, fmt, args...) nn_pr(nn, KERN_WARNING, fmt, ## args) |
| #define nn_info(nn, fmt, args...) nn_pr(nn, KERN_INFO, fmt, ## args) |
| #define nn_dbg(nn, fmt, args...) nn_pr(nn, KERN_DEBUG, fmt, ## args) |
| |
| #define nn_dp_warn(dp, fmt, args...) \ |
| ({ \ |
| struct nfp_net_dp *__dp = (dp); \ |
| \ |
| if (unlikely(net_ratelimit())) { \ |
| if (__dp->netdev) \ |
| netdev_warn(__dp->netdev, fmt, ## args); \ |
| else \ |
| dev_warn(__dp->dev, fmt, ## args); \ |
| } \ |
| }) |
| |
| /* Max time to wait for NFP to respond on updates (in seconds) */ |
| #define NFP_NET_POLL_TIMEOUT 5 |
| |
| /* Interval for reading offloaded filter stats */ |
| #define NFP_NET_STAT_POLL_IVL msecs_to_jiffies(100) |
| |
| /* Bar allocation */ |
| #define NFP_NET_CTRL_BAR 0 |
| #define NFP_NET_Q0_BAR 2 |
| #define NFP_NET_Q1_BAR 4 /* OBSOLETE */ |
| |
| /* Default size for MTU and freelist buffer sizes */ |
| #define NFP_NET_DEFAULT_MTU 1500U |
| |
| /* Maximum number of bytes prepended to a packet */ |
| #define NFP_NET_MAX_PREPEND 64 |
| |
| /* Interrupt definitions */ |
| #define NFP_NET_NON_Q_VECTORS 2 |
| #define NFP_NET_IRQ_LSC_IDX 0 |
| #define NFP_NET_IRQ_EXN_IDX 1 |
| #define NFP_NET_MIN_VNIC_IRQS (NFP_NET_NON_Q_VECTORS + 1) |
| |
| /* Queue/Ring definitions */ |
| #define NFP_NET_MAX_TX_RINGS 64 /* Max. # of Tx rings per device */ |
| #define NFP_NET_MAX_RX_RINGS 64 /* Max. # of Rx rings per device */ |
| #define NFP_NET_MAX_R_VECS (NFP_NET_MAX_TX_RINGS > NFP_NET_MAX_RX_RINGS ? \ |
| NFP_NET_MAX_TX_RINGS : NFP_NET_MAX_RX_RINGS) |
| #define NFP_NET_MAX_IRQS (NFP_NET_NON_Q_VECTORS + NFP_NET_MAX_R_VECS) |
| |
| #define NFP_NET_TX_DESCS_DEFAULT 4096 /* Default # of Tx descs per ring */ |
| #define NFP_NET_RX_DESCS_DEFAULT 4096 /* Default # of Rx descs per ring */ |
| |
| #define NFP_NET_FL_BATCH 16 /* Add freelist in this Batch size */ |
| #define NFP_NET_XDP_MAX_COMPLETE 2048 /* XDP bufs to reclaim in NAPI poll */ |
| |
| /* MC definitions */ |
| #define NFP_NET_CFG_MAC_MC_MAX 1024 /* The maximum number of MC address per port*/ |
| |
| /* Offload definitions */ |
| #define NFP_NET_N_VXLAN_PORTS (NFP_NET_CFG_VXLAN_SZ / sizeof(__be16)) |
| |
| #define NFP_NET_RX_BUF_HEADROOM (NET_SKB_PAD + NET_IP_ALIGN) |
| #define NFP_NET_RX_BUF_NON_DATA (NFP_NET_RX_BUF_HEADROOM + \ |
| SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) |
| |
| /* Forward declarations */ |
| struct nfp_cpp; |
| struct nfp_dev_info; |
| struct nfp_dp_ops; |
| struct nfp_eth_table_port; |
| struct nfp_net; |
| struct nfp_net_r_vector; |
| struct nfp_port; |
| struct xsk_buff_pool; |
| |
| struct nfp_nfd3_tx_desc; |
| struct nfp_nfd3_tx_buf; |
| |
| struct nfp_nfdk_tx_desc; |
| struct nfp_nfdk_tx_buf; |
| |
| /* Convenience macro for wrapping descriptor index on ring size */ |
| #define D_IDX(ring, idx) ((idx) & ((ring)->cnt - 1)) |
| |
| /* Convenience macro for writing dma address into RX/TX descriptors */ |
| #define nfp_desc_set_dma_addr_40b(desc, dma_addr) \ |
| do { \ |
| __typeof__(desc) __d = (desc); \ |
| dma_addr_t __addr = (dma_addr); \ |
| \ |
| __d->dma_addr_lo = cpu_to_le32(lower_32_bits(__addr)); \ |
| __d->dma_addr_hi = upper_32_bits(__addr) & 0xff; \ |
| } while (0) |
| |
| #define nfp_desc_set_dma_addr_48b(desc, dma_addr) \ |
| do { \ |
| __typeof__(desc) __d = (desc); \ |
| dma_addr_t __addr = (dma_addr); \ |
| \ |
| __d->dma_addr_hi = cpu_to_le16(upper_32_bits(__addr)); \ |
| __d->dma_addr_lo = cpu_to_le32(lower_32_bits(__addr)); \ |
| } while (0) |
| |
| /** |
| * struct nfp_net_tx_ring - TX ring structure |
| * @r_vec: Back pointer to ring vector structure |
| * @idx: Ring index from Linux's perspective |
| * @data_pending: number of bytes added to current block (NFDK only) |
| * @qcp_q: Pointer to base of the QCP TX queue |
| * @txrwb: TX pointer write back area |
| * @cnt: Size of the queue in number of descriptors |
| * @wr_p: TX ring write pointer (free running) |
| * @rd_p: TX ring read pointer (free running) |
| * @qcp_rd_p: Local copy of QCP TX queue read pointer |
| * @wr_ptr_add: Accumulated number of buffers to add to QCP write pointer |
| * (used for .xmit_more delayed kick) |
| * @txbufs: Array of transmitted TX buffers, to free on transmit (NFD3) |
| * @ktxbufs: Array of transmitted TX buffers, to free on transmit (NFDK) |
| * @txds: Virtual address of TX ring in host memory (NFD3) |
| * @ktxds: Virtual address of TX ring in host memory (NFDK) |
| * |
| * @qcidx: Queue Controller Peripheral (QCP) queue index for the TX queue |
| * @dma: DMA address of the TX ring |
| * @size: Size, in bytes, of the TX ring (needed to free) |
| * @is_xdp: Is this a XDP TX ring? |
| */ |
| struct nfp_net_tx_ring { |
| struct nfp_net_r_vector *r_vec; |
| |
| u16 idx; |
| u16 data_pending; |
| u8 __iomem *qcp_q; |
| u64 *txrwb; |
| |
| u32 cnt; |
| u32 wr_p; |
| u32 rd_p; |
| u32 qcp_rd_p; |
| |
| u32 wr_ptr_add; |
| |
| union { |
| struct nfp_nfd3_tx_buf *txbufs; |
| struct nfp_nfdk_tx_buf *ktxbufs; |
| }; |
| union { |
| struct nfp_nfd3_tx_desc *txds; |
| struct nfp_nfdk_tx_desc *ktxds; |
| }; |
| |
| /* Cold data follows */ |
| int qcidx; |
| |
| dma_addr_t dma; |
| size_t size; |
| bool is_xdp; |
| } ____cacheline_aligned; |
| |
| /* RX and freelist descriptor format */ |
| |
| #define PCIE_DESC_RX_DD BIT(7) |
| #define PCIE_DESC_RX_META_LEN_MASK GENMASK(6, 0) |
| |
| /* Flags in the RX descriptor */ |
| #define PCIE_DESC_RX_RSS cpu_to_le16(BIT(15)) |
| #define PCIE_DESC_RX_I_IP4_CSUM cpu_to_le16(BIT(14)) |
| #define PCIE_DESC_RX_I_IP4_CSUM_OK cpu_to_le16(BIT(13)) |
| #define PCIE_DESC_RX_I_TCP_CSUM cpu_to_le16(BIT(12)) |
| #define PCIE_DESC_RX_I_TCP_CSUM_OK cpu_to_le16(BIT(11)) |
| #define PCIE_DESC_RX_I_UDP_CSUM cpu_to_le16(BIT(10)) |
| #define PCIE_DESC_RX_I_UDP_CSUM_OK cpu_to_le16(BIT(9)) |
| #define PCIE_DESC_RX_DECRYPTED cpu_to_le16(BIT(8)) |
| #define PCIE_DESC_RX_EOP cpu_to_le16(BIT(7)) |
| #define PCIE_DESC_RX_IP4_CSUM cpu_to_le16(BIT(6)) |
| #define PCIE_DESC_RX_IP4_CSUM_OK cpu_to_le16(BIT(5)) |
| #define PCIE_DESC_RX_TCP_CSUM cpu_to_le16(BIT(4)) |
| #define PCIE_DESC_RX_TCP_CSUM_OK cpu_to_le16(BIT(3)) |
| #define PCIE_DESC_RX_UDP_CSUM cpu_to_le16(BIT(2)) |
| #define PCIE_DESC_RX_UDP_CSUM_OK cpu_to_le16(BIT(1)) |
| #define PCIE_DESC_RX_VLAN cpu_to_le16(BIT(0)) |
| |
| #define PCIE_DESC_RX_CSUM_ALL (PCIE_DESC_RX_IP4_CSUM | \ |
| PCIE_DESC_RX_TCP_CSUM | \ |
| PCIE_DESC_RX_UDP_CSUM | \ |
| PCIE_DESC_RX_I_IP4_CSUM | \ |
| PCIE_DESC_RX_I_TCP_CSUM | \ |
| PCIE_DESC_RX_I_UDP_CSUM) |
| #define PCIE_DESC_RX_CSUM_OK_SHIFT 1 |
| #define __PCIE_DESC_RX_CSUM_ALL le16_to_cpu(PCIE_DESC_RX_CSUM_ALL) |
| #define __PCIE_DESC_RX_CSUM_ALL_OK (__PCIE_DESC_RX_CSUM_ALL >> \ |
| PCIE_DESC_RX_CSUM_OK_SHIFT) |
| |
| struct nfp_net_rx_desc { |
| union { |
| struct { |
| __le16 dma_addr_hi; /* High bits of the buf address */ |
| u8 reserved; /* Must be zero */ |
| u8 meta_len_dd; /* Must be zero */ |
| |
| __le32 dma_addr_lo; /* Low bits of the buffer address */ |
| } __packed fld; |
| |
| struct { |
| __le16 data_len; /* Length of the frame + meta data */ |
| u8 reserved; |
| u8 meta_len_dd; /* Length of meta data prepended + |
| * descriptor done flag. |
| */ |
| |
| __le16 flags; /* RX flags. See @PCIE_DESC_RX_* */ |
| __le16 vlan; /* VLAN if stripped */ |
| } __packed rxd; |
| |
| __le32 vals[2]; |
| }; |
| }; |
| |
| #define NFP_NET_META_FIELD_MASK GENMASK(NFP_NET_META_FIELD_SIZE - 1, 0) |
| #define NFP_NET_VLAN_CTAG 0 |
| #define NFP_NET_VLAN_STAG 1 |
| |
| struct nfp_meta_parsed { |
| u8 hash_type; |
| u8 csum_type; |
| u32 hash; |
| u32 mark; |
| u32 portid; |
| __wsum csum; |
| struct { |
| bool stripped; |
| u8 tpid; |
| u16 tci; |
| } vlan; |
| |
| #ifdef CONFIG_NFP_NET_IPSEC |
| u32 ipsec_saidx; |
| #endif |
| }; |
| |
| struct nfp_net_rx_hash { |
| __be32 hash_type; |
| __be32 hash; |
| }; |
| |
| /** |
| * struct nfp_net_rx_buf - software RX buffer descriptor |
| * @frag: page fragment buffer |
| * @dma_addr: DMA mapping address of the buffer |
| */ |
| struct nfp_net_rx_buf { |
| void *frag; |
| dma_addr_t dma_addr; |
| }; |
| |
| /** |
| * struct nfp_net_xsk_rx_buf - software RX XSK buffer descriptor |
| * @dma_addr: DMA mapping address of the buffer |
| * @xdp: XSK buffer pool handle (for AF_XDP) |
| */ |
| struct nfp_net_xsk_rx_buf { |
| dma_addr_t dma_addr; |
| struct xdp_buff *xdp; |
| }; |
| |
| /** |
| * struct nfp_net_rx_ring - RX ring structure |
| * @r_vec: Back pointer to ring vector structure |
| * @cnt: Size of the queue in number of descriptors |
| * @wr_p: FL/RX ring write pointer (free running) |
| * @rd_p: FL/RX ring read pointer (free running) |
| * @idx: Ring index from Linux's perspective |
| * @fl_qcidx: Queue Controller Peripheral (QCP) queue index for the freelist |
| * @qcp_fl: Pointer to base of the QCP freelist queue |
| * @rxbufs: Array of transmitted FL/RX buffers |
| * @xsk_rxbufs: Array of transmitted FL/RX buffers (for AF_XDP) |
| * @rxds: Virtual address of FL/RX ring in host memory |
| * @xdp_rxq: RX-ring info avail for XDP |
| * @dma: DMA address of the FL/RX ring |
| * @size: Size, in bytes, of the FL/RX ring (needed to free) |
| */ |
| struct nfp_net_rx_ring { |
| struct nfp_net_r_vector *r_vec; |
| |
| u32 cnt; |
| u32 wr_p; |
| u32 rd_p; |
| |
| u32 idx; |
| |
| int fl_qcidx; |
| u8 __iomem *qcp_fl; |
| |
| struct nfp_net_rx_buf *rxbufs; |
| struct nfp_net_xsk_rx_buf *xsk_rxbufs; |
| struct nfp_net_rx_desc *rxds; |
| |
| struct xdp_rxq_info xdp_rxq; |
| |
| dma_addr_t dma; |
| size_t size; |
| } ____cacheline_aligned; |
| |
| /** |
| * struct nfp_net_r_vector - Per ring interrupt vector configuration |
| * @nfp_net: Backpointer to nfp_net structure |
| * @napi: NAPI structure for this ring vec |
| * @tasklet: ctrl vNIC, tasklet for servicing the r_vec |
| * @queue: ctrl vNIC, send queue |
| * @lock: ctrl vNIC, r_vec lock protects @queue |
| * @tx_ring: Pointer to TX ring |
| * @rx_ring: Pointer to RX ring |
| * @xdp_ring: Pointer to an extra TX ring for XDP |
| * @xsk_pool: XSK buffer pool active on vector queue pair (for AF_XDP) |
| * @irq_entry: MSI-X table entry (use for talking to the device) |
| * @event_ctr: Number of interrupt |
| * @rx_dim: Dynamic interrupt moderation structure for RX |
| * @tx_dim: Dynamic interrupt moderation structure for TX |
| * @rx_sync: Seqlock for atomic updates of RX stats |
| * @rx_pkts: Number of received packets |
| * @rx_bytes: Number of received bytes |
| * @rx_drops: Number of packets dropped on RX due to lack of resources |
| * @hw_csum_rx_ok: Counter of packets where the HW checksum was OK |
| * @hw_csum_rx_inner_ok: Counter of packets where the inner HW checksum was OK |
| * @hw_csum_rx_complete: Counter of packets with CHECKSUM_COMPLETE reported |
| * @hw_csum_rx_error: Counter of packets with bad checksums |
| * @hw_tls_rx: Number of packets with TLS decrypted by hardware |
| * @tx_sync: Seqlock for atomic updates of TX stats |
| * @tx_pkts: Number of Transmitted packets |
| * @tx_bytes: Number of Transmitted bytes |
| * @hw_csum_tx: Counter of packets with TX checksum offload requested |
| * @hw_csum_tx_inner: Counter of inner TX checksum offload requests |
| * @tx_gather: Counter of packets with Gather DMA |
| * @tx_lso: Counter of LSO packets sent |
| * @hw_tls_tx: Counter of TLS packets sent with crypto offloaded to HW |
| * @tls_tx_fallback: Counter of TLS packets sent which had to be encrypted |
| * by the fallback path because packets came out of order |
| * @tls_tx_no_fallback: Counter of TLS packets not sent because the fallback |
| * path could not encrypt them |
| * @tx_errors: How many TX errors were encountered |
| * @tx_busy: How often was TX busy (no space)? |
| * @rx_replace_buf_alloc_fail: Counter of RX buffer allocation failures |
| * @irq_vector: Interrupt vector number (use for talking to the OS) |
| * @handler: Interrupt handler for this ring vector |
| * @name: Name of the interrupt vector |
| * @affinity_mask: SMP affinity mask for this vector |
| * |
| * This structure ties RX and TX rings to interrupt vectors and a NAPI |
| * context. This currently only supports one RX and TX ring per |
| * interrupt vector but might be extended in the future to allow |
| * association of multiple rings per vector. |
| */ |
| struct nfp_net_r_vector { |
| struct nfp_net *nfp_net; |
| union { |
| struct napi_struct napi; |
| struct { |
| struct tasklet_struct tasklet; |
| struct sk_buff_head queue; |
| spinlock_t lock; |
| }; |
| }; |
| |
| struct nfp_net_tx_ring *tx_ring; |
| struct nfp_net_rx_ring *rx_ring; |
| |
| u16 irq_entry; |
| |
| u16 event_ctr; |
| struct dim rx_dim; |
| struct dim tx_dim; |
| |
| struct u64_stats_sync rx_sync; |
| u64 rx_pkts; |
| u64 rx_bytes; |
| u64 rx_drops; |
| u64 hw_csum_rx_ok; |
| u64 hw_csum_rx_inner_ok; |
| u64 hw_csum_rx_complete; |
| u64 hw_tls_rx; |
| |
| u64 hw_csum_rx_error; |
| u64 rx_replace_buf_alloc_fail; |
| |
| struct nfp_net_tx_ring *xdp_ring; |
| struct xsk_buff_pool *xsk_pool; |
| |
| struct u64_stats_sync tx_sync; |
| u64 tx_pkts; |
| u64 tx_bytes; |
| |
| u64 ____cacheline_aligned_in_smp hw_csum_tx; |
| u64 hw_csum_tx_inner; |
| u64 tx_gather; |
| u64 tx_lso; |
| u64 hw_tls_tx; |
| |
| u64 tls_tx_fallback; |
| u64 tls_tx_no_fallback; |
| u64 tx_errors; |
| u64 tx_busy; |
| |
| /* Cold data follows */ |
| |
| u32 irq_vector; |
| irq_handler_t handler; |
| char name[IFNAMSIZ + 8]; |
| cpumask_t affinity_mask; |
| } ____cacheline_aligned; |
| |
| /* Firmware version as it is written in the 32bit value in the BAR */ |
| struct nfp_net_fw_version { |
| u8 minor; |
| u8 major; |
| u8 class; |
| |
| /* This byte can be exploited for more use, currently, |
| * BIT0: dp type, BIT[7:1]: reserved |
| */ |
| u8 extend; |
| } __packed; |
| |
| static inline bool nfp_net_fw_ver_eq(struct nfp_net_fw_version *fw_ver, |
| u8 extend, u8 class, u8 major, u8 minor) |
| { |
| return fw_ver->extend == extend && |
| fw_ver->class == class && |
| fw_ver->major == major && |
| fw_ver->minor == minor; |
| } |
| |
| struct nfp_stat_pair { |
| u64 pkts; |
| u64 bytes; |
| }; |
| |
| /** |
| * struct nfp_net_dp - NFP network device datapath data structure |
| * @dev: Backpointer to struct device |
| * @netdev: Backpointer to net_device structure |
| * @is_vf: Is the driver attached to a VF? |
| * @chained_metadata_format: Firemware will use new metadata format |
| * @ktls_tx: Is kTLS TX enabled? |
| * @rx_dma_dir: Mapping direction for RX buffers |
| * @rx_dma_off: Offset at which DMA packets (for XDP headroom) |
| * @rx_offset: Offset in the RX buffers where packet data starts |
| * @ctrl: Local copy of the control register/word. |
| * @ctrl_w1: Local copy of the control register/word1. |
| * @fl_bufsz: Currently configured size of the freelist buffers |
| * @xdp_prog: Installed XDP program |
| * @tx_rings: Array of pre-allocated TX ring structures |
| * @rx_rings: Array of pre-allocated RX ring structures |
| * @ctrl_bar: Pointer to mapped control BAR |
| * |
| * @ops: Callbacks and parameters for this vNIC's NFD version |
| * @txrwb: TX pointer write back area (indexed by queue id) |
| * @txrwb_dma: TX pointer write back area DMA address |
| * @txd_cnt: Size of the TX ring in number of min size packets |
| * @rxd_cnt: Size of the RX ring in number of min size packets |
| * @num_r_vecs: Number of used ring vectors |
| * @num_tx_rings: Currently configured number of TX rings |
| * @num_stack_tx_rings: Number of TX rings used by the stack (not XDP) |
| * @num_rx_rings: Currently configured number of RX rings |
| * @mtu: Device MTU |
| * @xsk_pools: XSK buffer pools, @max_r_vecs in size (for AF_XDP). |
| */ |
| struct nfp_net_dp { |
| struct device *dev; |
| struct net_device *netdev; |
| |
| u8 is_vf:1; |
| u8 chained_metadata_format:1; |
| u8 ktls_tx:1; |
| |
| u8 rx_dma_dir; |
| u8 rx_offset; |
| |
| u32 rx_dma_off; |
| |
| u32 ctrl; |
| u32 ctrl_w1; |
| u32 fl_bufsz; |
| |
| struct bpf_prog *xdp_prog; |
| |
| struct nfp_net_tx_ring *tx_rings; |
| struct nfp_net_rx_ring *rx_rings; |
| |
| u8 __iomem *ctrl_bar; |
| |
| /* Cold data follows */ |
| |
| const struct nfp_dp_ops *ops; |
| |
| u64 *txrwb; |
| dma_addr_t txrwb_dma; |
| |
| unsigned int txd_cnt; |
| unsigned int rxd_cnt; |
| |
| unsigned int num_r_vecs; |
| |
| unsigned int num_tx_rings; |
| unsigned int num_stack_tx_rings; |
| unsigned int num_rx_rings; |
| |
| unsigned int mtu; |
| |
| struct xsk_buff_pool **xsk_pools; |
| }; |
| |
| /** |
| * struct nfp_net - NFP network device structure |
| * @dp: Datapath structure |
| * @dev_info: NFP ASIC params |
| * @id: vNIC id within the PF (0 for VFs) |
| * @fw_ver: Firmware version |
| * @cap: Capabilities advertised by the Firmware |
| * @cap_w1: Extended capabilities word advertised by the Firmware |
| * @max_mtu: Maximum support MTU advertised by the Firmware |
| * @rss_hfunc: RSS selected hash function |
| * @rss_cfg: RSS configuration |
| * @rss_key: RSS secret key |
| * @rss_itbl: RSS indirection table |
| * @xdp: Information about the driver XDP program |
| * @xdp_hw: Information about the HW XDP program |
| * @max_r_vecs: Number of allocated interrupt vectors for RX/TX |
| * @max_tx_rings: Maximum number of TX rings supported by the Firmware |
| * @max_rx_rings: Maximum number of RX rings supported by the Firmware |
| * @stride_rx: Queue controller RX queue spacing |
| * @stride_tx: Queue controller TX queue spacing |
| * @r_vecs: Pre-allocated array of ring vectors |
| * @irq_entries: Pre-allocated array of MSI-X entries |
| * @lsc_handler: Handler for Link State Change interrupt |
| * @lsc_name: Name for Link State Change interrupt |
| * @exn_handler: Handler for Exception interrupt |
| * @exn_name: Name for Exception interrupt |
| * @shared_handler: Handler for shared interrupts |
| * @shared_name: Name for shared interrupt |
| * @reconfig_lock: Protects @reconfig_posted, @reconfig_timer_active, |
| * @reconfig_sync_present and HW reconfiguration request |
| * regs/machinery from async requests (sync must take |
| * @bar_lock) |
| * @reconfig_posted: Pending reconfig bits coming from async sources |
| * @reconfig_timer_active: Timer for reading reconfiguration results is pending |
| * @reconfig_sync_present: Some thread is performing synchronous reconfig |
| * @reconfig_timer: Timer for async reading of reconfig results |
| * @reconfig_in_progress_update: Update FW is processing now (debug only) |
| * @bar_lock: vNIC config BAR access lock, protects: update, |
| * mailbox area, crypto TLV |
| * @link_up: Is the link up? |
| * @link_status_lock: Protects @link_* and ensures atomicity with BAR reading |
| * @rx_coalesce_adapt_on: Is RX interrupt moderation adaptive? |
| * @tx_coalesce_adapt_on: Is TX interrupt moderation adaptive? |
| * @rx_coalesce_usecs: RX interrupt moderation usecs delay parameter |
| * @rx_coalesce_max_frames: RX interrupt moderation frame count parameter |
| * @tx_coalesce_usecs: TX interrupt moderation usecs delay parameter |
| * @tx_coalesce_max_frames: TX interrupt moderation frame count parameter |
| * @qcp_cfg: Pointer to QCP queue used for configuration notification |
| * @tx_bar: Pointer to mapped TX queues |
| * @rx_bar: Pointer to mapped FL/RX queues |
| * @xa_ipsec: IPsec xarray SA data |
| * @tlv_caps: Parsed TLV capabilities |
| * @ktls_tx_conn_cnt: Number of offloaded kTLS TX connections |
| * @ktls_rx_conn_cnt: Number of offloaded kTLS RX connections |
| * @ktls_conn_id_gen: Trivial generator for kTLS connection ids (for TX) |
| * @ktls_no_space: Counter of firmware rejecting kTLS connection due to |
| * lack of space |
| * @ktls_rx_resync_req: Counter of TLS RX resync requested |
| * @ktls_rx_resync_ign: Counter of TLS RX resync requests ignored |
| * @ktls_rx_resync_sent: Counter of TLS RX resync completed |
| * @mbox_cmsg: Common Control Message via vNIC mailbox state |
| * @mbox_cmsg.queue: CCM mbox queue of pending messages |
| * @mbox_cmsg.wq: CCM mbox wait queue of waiting processes |
| * @mbox_cmsg.workq: CCM mbox work queue for @wait_work and @runq_work |
| * @mbox_cmsg.wait_work: CCM mbox posted msg reconfig wait work |
| * @mbox_cmsg.runq_work: CCM mbox posted msg queue runner work |
| * @mbox_cmsg.tag: CCM mbox message tag allocator |
| * @debugfs_dir: Device directory in debugfs |
| * @vnic_list: Entry on device vNIC list |
| * @pdev: Backpointer to PCI device |
| * @app: APP handle if available |
| * @vnic_no_name: For non-port PF vNIC make ndo_get_phys_port_name return |
| * -EOPNOTSUPP to keep backwards compatibility (set by app) |
| * @port: Pointer to nfp_port structure if vNIC is a port |
| * @mbox_amsg: Asynchronously processed message via mailbox |
| * @mbox_amsg.lock: Protect message list |
| * @mbox_amsg.list: List of message to process |
| * @mbox_amsg.work: Work to process message asynchronously |
| * @fs: Flow steering |
| * @fs.count: Flow count |
| * @fs.list: List of flows |
| * @app_priv: APP private data for this vNIC |
| */ |
| struct nfp_net { |
| struct nfp_net_dp dp; |
| |
| const struct nfp_dev_info *dev_info; |
| struct nfp_net_fw_version fw_ver; |
| |
| u32 id; |
| |
| u32 cap; |
| u32 cap_w1; |
| u32 max_mtu; |
| |
| u8 rss_hfunc; |
| u32 rss_cfg; |
| u8 rss_key[NFP_NET_CFG_RSS_KEY_SZ]; |
| u8 rss_itbl[NFP_NET_CFG_RSS_ITBL_SZ]; |
| |
| struct xdp_attachment_info xdp; |
| struct xdp_attachment_info xdp_hw; |
| |
| unsigned int max_tx_rings; |
| unsigned int max_rx_rings; |
| |
| int stride_tx; |
| int stride_rx; |
| |
| unsigned int max_r_vecs; |
| struct nfp_net_r_vector r_vecs[NFP_NET_MAX_R_VECS]; |
| struct msix_entry irq_entries[NFP_NET_MAX_IRQS]; |
| |
| irq_handler_t lsc_handler; |
| char lsc_name[IFNAMSIZ + 8]; |
| |
| irq_handler_t exn_handler; |
| char exn_name[IFNAMSIZ + 8]; |
| |
| irq_handler_t shared_handler; |
| char shared_name[IFNAMSIZ + 8]; |
| |
| bool link_up; |
| spinlock_t link_status_lock; |
| |
| spinlock_t reconfig_lock; |
| u32 reconfig_posted; |
| bool reconfig_timer_active; |
| bool reconfig_sync_present; |
| struct timer_list reconfig_timer; |
| u32 reconfig_in_progress_update; |
| |
| struct semaphore bar_lock; |
| |
| bool rx_coalesce_adapt_on; |
| bool tx_coalesce_adapt_on; |
| u32 rx_coalesce_usecs; |
| u32 rx_coalesce_max_frames; |
| u32 tx_coalesce_usecs; |
| u32 tx_coalesce_max_frames; |
| |
| u8 __iomem *qcp_cfg; |
| |
| u8 __iomem *tx_bar; |
| u8 __iomem *rx_bar; |
| |
| #ifdef CONFIG_NFP_NET_IPSEC |
| struct xarray xa_ipsec; |
| #endif |
| |
| struct nfp_net_tlv_caps tlv_caps; |
| |
| unsigned int ktls_tx_conn_cnt; |
| unsigned int ktls_rx_conn_cnt; |
| |
| atomic64_t ktls_conn_id_gen; |
| |
| atomic_t ktls_no_space; |
| atomic_t ktls_rx_resync_req; |
| atomic_t ktls_rx_resync_ign; |
| atomic_t ktls_rx_resync_sent; |
| |
| struct { |
| struct sk_buff_head queue; |
| wait_queue_head_t wq; |
| struct workqueue_struct *workq; |
| struct work_struct wait_work; |
| struct work_struct runq_work; |
| u16 tag; |
| } mbox_cmsg; |
| |
| struct dentry *debugfs_dir; |
| |
| struct list_head vnic_list; |
| |
| struct pci_dev *pdev; |
| struct nfp_app *app; |
| |
| bool vnic_no_name; |
| |
| struct nfp_port *port; |
| |
| struct { |
| spinlock_t lock; |
| struct list_head list; |
| struct work_struct work; |
| } mbox_amsg; |
| |
| struct { |
| u16 count; |
| struct list_head list; |
| } fs; |
| |
| void *app_priv; |
| }; |
| |
| struct nfp_fs_entry { |
| struct list_head node; |
| u32 flow_type; |
| u32 loc; |
| struct { |
| union { |
| struct { |
| __be32 sip4; |
| __be32 dip4; |
| }; |
| struct { |
| __be32 sip6[4]; |
| __be32 dip6[4]; |
| }; |
| }; |
| union { |
| __be16 l3_proto; |
| u8 l4_proto; |
| }; |
| __be16 sport; |
| __be16 dport; |
| } key, msk; |
| u64 action; |
| }; |
| |
| struct nfp_mbox_amsg_entry { |
| struct list_head list; |
| int (*cfg)(struct nfp_net *nn, struct nfp_mbox_amsg_entry *entry); |
| u32 cmd; |
| char msg[]; |
| }; |
| |
| int nfp_net_sched_mbox_amsg_work(struct nfp_net *nn, u32 cmd, const void *data, size_t len, |
| int (*cb)(struct nfp_net *, struct nfp_mbox_amsg_entry *)); |
| |
| /* Functions to read/write from/to a BAR |
| * Performs any endian conversion necessary. |
| */ |
| static inline u16 nn_readb(struct nfp_net *nn, int off) |
| { |
| return readb(nn->dp.ctrl_bar + off); |
| } |
| |
| static inline void nn_writeb(struct nfp_net *nn, int off, u8 val) |
| { |
| writeb(val, nn->dp.ctrl_bar + off); |
| } |
| |
| static inline u16 nn_readw(struct nfp_net *nn, int off) |
| { |
| return readw(nn->dp.ctrl_bar + off); |
| } |
| |
| static inline void nn_writew(struct nfp_net *nn, int off, u16 val) |
| { |
| writew(val, nn->dp.ctrl_bar + off); |
| } |
| |
| static inline u32 nn_readl(struct nfp_net *nn, int off) |
| { |
| return readl(nn->dp.ctrl_bar + off); |
| } |
| |
| static inline void nn_writel(struct nfp_net *nn, int off, u32 val) |
| { |
| writel(val, nn->dp.ctrl_bar + off); |
| } |
| |
| static inline u64 nn_readq(struct nfp_net *nn, int off) |
| { |
| return readq(nn->dp.ctrl_bar + off); |
| } |
| |
| static inline void nn_writeq(struct nfp_net *nn, int off, u64 val) |
| { |
| writeq(val, nn->dp.ctrl_bar + off); |
| } |
| |
| /* Flush posted PCI writes by reading something without side effects */ |
| static inline void nn_pci_flush(struct nfp_net *nn) |
| { |
| nn_readl(nn, NFP_NET_CFG_VERSION); |
| } |
| |
| /* Queue Controller Peripheral access functions and definitions. |
| * |
| * Some of the BARs of the NFP are mapped to portions of the Queue |
| * Controller Peripheral (QCP) address space on the NFP. A QCP queue |
| * has a read and a write pointer (as well as a size and flags, |
| * indicating overflow etc). The QCP offers a number of different |
| * operation on queue pointers, but here we only offer function to |
| * either add to a pointer or to read the pointer value. |
| */ |
| #define NFP_QCP_QUEUE_ADDR_SZ 0x800 |
| #define NFP_QCP_QUEUE_OFF(_x) ((_x) * NFP_QCP_QUEUE_ADDR_SZ) |
| #define NFP_QCP_QUEUE_ADD_RPTR 0x0000 |
| #define NFP_QCP_QUEUE_ADD_WPTR 0x0004 |
| #define NFP_QCP_QUEUE_STS_LO 0x0008 |
| #define NFP_QCP_QUEUE_STS_LO_READPTR_mask 0x3ffff |
| #define NFP_QCP_QUEUE_STS_HI 0x000c |
| #define NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask 0x3ffff |
| |
| /* nfp_qcp_ptr - Read or Write Pointer of a queue */ |
| enum nfp_qcp_ptr { |
| NFP_QCP_READ_PTR = 0, |
| NFP_QCP_WRITE_PTR |
| }; |
| |
| /** |
| * nfp_qcp_rd_ptr_add() - Add the value to the read pointer of a queue |
| * |
| * @q: Base address for queue structure |
| * @val: Value to add to the queue pointer |
| */ |
| static inline void nfp_qcp_rd_ptr_add(u8 __iomem *q, u32 val) |
| { |
| writel(val, q + NFP_QCP_QUEUE_ADD_RPTR); |
| } |
| |
| /** |
| * nfp_qcp_wr_ptr_add() - Add the value to the write pointer of a queue |
| * |
| * @q: Base address for queue structure |
| * @val: Value to add to the queue pointer |
| */ |
| static inline void nfp_qcp_wr_ptr_add(u8 __iomem *q, u32 val) |
| { |
| writel(val, q + NFP_QCP_QUEUE_ADD_WPTR); |
| } |
| |
| static inline u32 _nfp_qcp_read(u8 __iomem *q, enum nfp_qcp_ptr ptr) |
| { |
| u32 off; |
| u32 val; |
| |
| if (ptr == NFP_QCP_READ_PTR) |
| off = NFP_QCP_QUEUE_STS_LO; |
| else |
| off = NFP_QCP_QUEUE_STS_HI; |
| |
| val = readl(q + off); |
| |
| if (ptr == NFP_QCP_READ_PTR) |
| return val & NFP_QCP_QUEUE_STS_LO_READPTR_mask; |
| else |
| return val & NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask; |
| } |
| |
| /** |
| * nfp_qcp_rd_ptr_read() - Read the current read pointer value for a queue |
| * @q: Base address for queue structure |
| * |
| * Return: Value read. |
| */ |
| static inline u32 nfp_qcp_rd_ptr_read(u8 __iomem *q) |
| { |
| return _nfp_qcp_read(q, NFP_QCP_READ_PTR); |
| } |
| |
| /** |
| * nfp_qcp_wr_ptr_read() - Read the current write pointer value for a queue |
| * @q: Base address for queue structure |
| * |
| * Return: Value read. |
| */ |
| static inline u32 nfp_qcp_wr_ptr_read(u8 __iomem *q) |
| { |
| return _nfp_qcp_read(q, NFP_QCP_WRITE_PTR); |
| } |
| |
| u32 nfp_qcp_queue_offset(const struct nfp_dev_info *dev_info, u16 queue); |
| |
| static inline bool nfp_net_is_data_vnic(struct nfp_net *nn) |
| { |
| WARN_ON_ONCE(!nn->dp.netdev && nn->port); |
| return !!nn->dp.netdev; |
| } |
| |
| static inline bool nfp_net_running(struct nfp_net *nn) |
| { |
| return nn->dp.ctrl & NFP_NET_CFG_CTRL_ENABLE; |
| } |
| |
| static inline const char *nfp_net_name(struct nfp_net *nn) |
| { |
| return nn->dp.netdev ? nn->dp.netdev->name : "ctrl"; |
| } |
| |
| static inline void nfp_ctrl_lock(struct nfp_net *nn) |
| __acquires(&nn->r_vecs[0].lock) |
| { |
| spin_lock_bh(&nn->r_vecs[0].lock); |
| } |
| |
| static inline void nfp_ctrl_unlock(struct nfp_net *nn) |
| __releases(&nn->r_vecs[0].lock) |
| { |
| spin_unlock_bh(&nn->r_vecs[0].lock); |
| } |
| |
| static inline void nn_ctrl_bar_lock(struct nfp_net *nn) |
| { |
| down(&nn->bar_lock); |
| } |
| |
| static inline bool nn_ctrl_bar_trylock(struct nfp_net *nn) |
| { |
| return !down_trylock(&nn->bar_lock); |
| } |
| |
| static inline void nn_ctrl_bar_unlock(struct nfp_net *nn) |
| { |
| up(&nn->bar_lock); |
| } |
| |
| /* Globals */ |
| extern const char nfp_driver_version[]; |
| |
| extern const struct net_device_ops nfp_nfd3_netdev_ops; |
| extern const struct net_device_ops nfp_nfdk_netdev_ops; |
| |
| static inline bool nfp_netdev_is_nfp_net(struct net_device *netdev) |
| { |
| return netdev->netdev_ops == &nfp_nfd3_netdev_ops || |
| netdev->netdev_ops == &nfp_nfdk_netdev_ops; |
| } |
| |
| static inline int nfp_net_coalesce_para_check(u32 param) |
| { |
| if (param >= ((1 << 16) - 1)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| /* Prototypes */ |
| void nfp_net_get_fw_version(struct nfp_net_fw_version *fw_ver, |
| void __iomem *ctrl_bar); |
| |
| struct nfp_net * |
| nfp_net_alloc(struct pci_dev *pdev, const struct nfp_dev_info *dev_info, |
| void __iomem *ctrl_bar, bool needs_netdev, |
| unsigned int max_tx_rings, unsigned int max_rx_rings); |
| void nfp_net_free(struct nfp_net *nn); |
| |
| int nfp_net_init(struct nfp_net *nn); |
| void nfp_net_clean(struct nfp_net *nn); |
| |
| int nfp_ctrl_open(struct nfp_net *nn); |
| void nfp_ctrl_close(struct nfp_net *nn); |
| |
| void nfp_net_set_ethtool_ops(struct net_device *netdev); |
| void nfp_net_info(struct nfp_net *nn); |
| int __nfp_net_reconfig(struct nfp_net *nn, u32 update); |
| int nfp_net_reconfig(struct nfp_net *nn, u32 update); |
| unsigned int nfp_net_rss_key_sz(struct nfp_net *nn); |
| void nfp_net_rss_write_itbl(struct nfp_net *nn); |
| void nfp_net_rss_write_key(struct nfp_net *nn); |
| void nfp_net_coalesce_write_cfg(struct nfp_net *nn); |
| int nfp_net_mbox_lock(struct nfp_net *nn, unsigned int data_size); |
| int nfp_net_mbox_reconfig(struct nfp_net *nn, u32 mbox_cmd); |
| int nfp_net_mbox_reconfig_and_unlock(struct nfp_net *nn, u32 mbox_cmd); |
| void nfp_net_mbox_reconfig_post(struct nfp_net *nn, u32 update); |
| int nfp_net_mbox_reconfig_wait_posted(struct nfp_net *nn); |
| |
| unsigned int |
| nfp_net_irqs_alloc(struct pci_dev *pdev, struct msix_entry *irq_entries, |
| unsigned int min_irqs, unsigned int want_irqs); |
| void nfp_net_irqs_disable(struct pci_dev *pdev); |
| void |
| nfp_net_irqs_assign(struct nfp_net *nn, struct msix_entry *irq_entries, |
| unsigned int n); |
| struct sk_buff * |
| nfp_net_tls_tx(struct nfp_net_dp *dp, struct nfp_net_r_vector *r_vec, |
| struct sk_buff *skb, u64 *tls_handle, int *nr_frags); |
| void nfp_net_tls_tx_undo(struct sk_buff *skb, u64 tls_handle); |
| |
| struct nfp_net_dp *nfp_net_clone_dp(struct nfp_net *nn); |
| int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *new, |
| struct netlink_ext_ack *extack); |
| |
| int nfp_net_fs_add_hw(struct nfp_net *nn, struct nfp_fs_entry *entry); |
| int nfp_net_fs_del_hw(struct nfp_net *nn, struct nfp_fs_entry *entry); |
| |
| #ifdef CONFIG_NFP_DEBUG |
| void nfp_net_debugfs_create(void); |
| void nfp_net_debugfs_destroy(void); |
| struct dentry *nfp_net_debugfs_device_add(struct pci_dev *pdev); |
| void nfp_net_debugfs_vnic_add(struct nfp_net *nn, struct dentry *ddir); |
| void nfp_net_debugfs_dir_clean(struct dentry **dir); |
| #else |
| static inline void nfp_net_debugfs_create(void) |
| { |
| } |
| |
| static inline void nfp_net_debugfs_destroy(void) |
| { |
| } |
| |
| static inline struct dentry *nfp_net_debugfs_device_add(struct pci_dev *pdev) |
| { |
| return NULL; |
| } |
| |
| static inline void |
| nfp_net_debugfs_vnic_add(struct nfp_net *nn, struct dentry *ddir) |
| { |
| } |
| |
| static inline void nfp_net_debugfs_dir_clean(struct dentry **dir) |
| { |
| } |
| #endif /* CONFIG_NFP_DEBUG */ |
| |
| #endif /* _NFP_NET_H_ */ |
