Quelle nfp_net.h
Sprache: C
/* 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 1500 U
/* 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) & 0 xff; \
} 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 0 x800
#define NFP_QCP_QUEUE_OFF(_x) ((_x) * NFP_QCP_QUEUE_ADDR_SZ)
#define NFP_QCP_QUEUE_ADD_RPTR 0 x0000
#define NFP_QCP_QUEUE_ADD_WPTR 0 x0004
#define NFP_QCP_QUEUE_STS_LO 0 x0008
#define NFP_QCP_QUEUE_STS_LO_READPTR_mask 0 x3ffff
#define NFP_QCP_QUEUE_STS_HI 0 x000c
#define NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask 0 x3ffff
/* 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_ */
Messung V0.5 in Prozent C=93 H=92 G=92
¤ Dauer der Verarbeitung: 0.24 Sekunden
(vorverarbeitet am 2026-10-12)
¤
*© Formatika GbR, Deutschland
2026-10-11
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