path: root/src/plugins/dpdk/device/dpdk.h

/*
 * Copyright (c) 2015 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef __included_dpdk_h__
#define __included_dpdk_h__

/* $$$$ We should rename always_inline -> clib_always_inline */
#undef always_inline

#define ALLOW_EXPERIMENTAL_API

#include <rte_config.h>

#include <rte_eal.h>
#include <rte_bus_pci.h>
#include <rte_bus_vmbus.h>
#include <rte_ethdev.h>
#include <rte_version.h>
#include <rte_net.h>

#include <vnet/devices/devices.h>

#if CLIB_DEBUG > 0
#define always_inline static inline
#else
#define always_inline static inline __attribute__ ((__always_inline__))
#endif

#include <vlib/pci/pci.h>
#include <vlib/vmbus/vmbus.h>
#include <vnet/flow/flow.h>

extern vnet_device_class_t dpdk_device_class;
extern vlib_node_registration_t dpdk_input_node;
extern vlib_node_registration_t admin_up_down_process_node;

typedef uint16_t dpdk_portid_t;

#define foreach_dpdk_device_flags                                             \
  _ (0, ADMIN_UP, "admin-up")                                                 \
  _ (1, PROMISC, "promisc")                                                   \
  _ (3, PMD_INIT_FAIL, "pmd-init-fail")                                       \
  _ (4, MAYBE_MULTISEG, "maybe-multiseg")                                     \
  _ (5, HAVE_SUBIF, "subif")                                                  \
  _ (9, TX_OFFLOAD, "tx-offload")                                             \
  _ (10, INTEL_PHDR_CKSUM, "intel-phdr-cksum")                                \
  _ (11, RX_FLOW_OFFLOAD, "rx-flow-offload")                                  \
  _ (12, RX_IP4_CKSUM, "rx-ip4-cksum")                                        \
  _ (13, INT_SUPPORTED, "int-supported")                                      \
  _ (14, INT_UNMASKABLE, "int-unmaskable")

typedef enum
{
#define _(a, b, c) DPDK_DEVICE_FLAG_##b = (1 << a),
  foreach_dpdk_device_flags
#undef _
} dpdk_device_flag_t;

typedef struct
{
  u32 flow_index;
  u32 mark;
  struct rte_flow *handle;
} dpdk_flow_entry_t;

typedef struct
{
  u32 flow_id;
  u16 next_index;
  i16 buffer_advance;
} dpdk_flow_lookup_entry_t;

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  u8 buffer_pool_index;
  u32 queue_index;
  int efd;
  uword clib_file_index;
} dpdk_rx_queue_t;

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  clib_spinlock_t lock;
  u32 queue_index;
} dpdk_tx_queue_t;

typedef struct
{
  const char *name;
  const char *desc;
} dpdk_driver_name_t;

typedef struct
{
  dpdk_driver_name_t *drivers;
  const char *interface_name_prefix;
  u16 n_rx_desc;
  u16 n_tx_desc;
  u32 supported_flow_actions;
  i32 enable_lsc_int : 1;
  i32 enable_rxq_int : 1;
  i32 disable_rx_scatter : 1;
  i32 program_vlans : 1;
  i32 mq_mode_none : 1;
  i32 interface_number_from_port_id : 1;
  i32 use_intel_phdr_cksum : 1;
  i32 int_unmaskable : 1;
} dpdk_driver_t;

dpdk_driver_t *dpdk_driver_find (const char *name, const char **desc);

typedef union
{
  struct
  {
    u16 disable_multi_seg : 1;
    u16 enable_lro : 1;
    u16 enable_tso : 1;
    u16 enable_tcp_udp_checksum : 1;
    u16 enable_outer_checksum_offload : 1;
    u16 enable_lsc_int : 1;
    u16 enable_rxq_int : 1;
    u16 disable_tx_checksum_offload : 1;
    u16 disable_rss : 1;
    u16 disable_rx_scatter : 1;
    u16 n_rx_queues;
    u16 n_tx_queues;
    u16 n_rx_desc;
    u16 n_tx_desc;
    u32 max_lro_pkt_size;
    u64 rss_hf;
  };
  u64 as_u64[3];
} dpdk_port_conf_t;

STATIC_ASSERT_SIZEOF (dpdk_port_conf_t, 24);

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);

  dpdk_rx_queue_t *rx_queues;
  dpdk_tx_queue_t *tx_queues;

  /* Instance ID to access internal device array. */
  u32 device_index;

  u32 hw_if_index;
  u32 sw_if_index;
  u32 buffer_flags;

  /* next node index if we decide to steal the rx graph arc */
  u32 per_interface_next_index;

  u16 flags;

  /* DPDK device port number */
  dpdk_portid_t port_id;
  i8 cpu_socket;

  CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);

  u64 enabled_tx_off;
  u64 enabled_rx_off;
  dpdk_driver_t *driver;
  u8 *name;
  const char *if_desc;

  /* number of sub-interfaces */
  u16 num_subifs;

  /* flow related */
  u32 supported_flow_actions;
  dpdk_flow_entry_t *flow_entries;	/* pool */
  dpdk_flow_lookup_entry_t *flow_lookup_entries;	/* pool */
  u32 *parked_lookup_indexes;	/* vector */
  u32 parked_loop_count;
  struct rte_flow_error last_flow_error;

  struct rte_eth_link link;
  f64 time_last_link_update;

  struct rte_eth_stats stats;
  struct rte_eth_stats last_stats;
  struct rte_eth_xstat *xstats;
  f64 time_last_stats_update;

  /* mac address */
  u8 *default_mac_address;

  /* maximum supported max frame size */
  u32 max_supported_frame_size;

  /* due to lack of API to get ethernet max_frame_size we store information
   * deducted from device info */
  u8 driver_frame_overhead;

  /* error string */
  clib_error_t *errors;
  dpdk_port_conf_t conf;
} dpdk_device_t;

#define DPDK_STATS_POLL_INTERVAL      (10.0)
#define DPDK_MIN_STATS_POLL_INTERVAL  (0.001)	/* 1msec */

#define DPDK_LINK_POLL_INTERVAL       (3.0)
#define DPDK_MIN_LINK_POLL_INTERVAL   (0.001)	/* 1msec */

#define foreach_dpdk_device_config_item                                       \
  _ (num_rx_queues)                                                           \
  _ (num_tx_queues)                                                           \
  _ (num_rx_desc)                                                             \
  _ (num_tx_desc)                                                             \
  _ (max_lro_pkt_size)                                                        \
  _ (rss_fn)

typedef enum
{
  VNET_DEV_ADDR_PCI,
  VNET_DEV_ADDR_VMBUS,
  VNET_DEV_ADDR_ANY,
} dpdk_device_addr_type_t;

typedef struct
{
  union
  {
    vlib_pci_addr_t pci_addr;
    vlib_vmbus_addr_t vmbus_addr;
  };
  dpdk_device_addr_type_t dev_addr_type;
  u8 *name;
  u8 is_blacklisted;

#define _(x) uword x;
    foreach_dpdk_device_config_item
#undef _
    clib_bitmap_t * workers;
  u8 tso;
  u8 *devargs;
  clib_bitmap_t *rss_queues;

#define DPDK_DEVICE_TSO_DEFAULT 0
#define DPDK_DEVICE_TSO_OFF 1
#define DPDK_DEVICE_TSO_ON  2
} dpdk_device_config_t;

typedef struct
{

  /* Config stuff */
  u8 **eal_init_args;
  u8 *eal_init_args_str;
  u8 *uio_driver_name;
  u8 enable_telemetry;
  u16 max_simd_bitwidth;

#define DPDK_MAX_SIMD_BITWIDTH_DEFAULT 0
#define DPDK_MAX_SIMD_BITWIDTH_256     256
#define DPDK_MAX_SIMD_BITWIDTH_512     512

  /*
   * format interface names ala xxxEthernet%d/%d/%d instead of
   * xxxEthernet%x/%x/%x.
   */
  u8 interface_name_format_decimal;

  /* per-device config */
  dpdk_device_config_t default_devconf;
  dpdk_device_config_t *dev_confs;
  uword *device_config_index_by_pci_addr;
  mhash_t device_config_index_by_vmbus_addr;

  /* devices blacklist by pci vendor_id, device_id */
  u32 *blacklist_by_pci_vendor_and_device;
  /* devices blacklist by VMBUS address */
  vlib_vmbus_addr_t *blacklist_by_vmbus_addr;

} dpdk_config_main_t;

extern dpdk_config_main_t dpdk_config_main;

#define DPDK_RX_BURST_SZ VLIB_FRAME_SIZE

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  struct rte_mbuf *mbufs[DPDK_RX_BURST_SZ];
  u32 buffers[DPDK_RX_BURST_SZ];
  u16 next[DPDK_RX_BURST_SZ];
  u16 etype[DPDK_RX_BURST_SZ];
  u32 flags[DPDK_RX_BURST_SZ];
  vlib_buffer_t buffer_template;
} dpdk_per_thread_data_t;

typedef struct
{
  /* Devices */
  dpdk_device_t *devices;
  dpdk_per_thread_data_t *per_thread_data;

  /*
   * flag indicating that a posted admin up/down
   * (via post_sw_interface_set_flags) is in progress
   */
  u8 admin_up_down_in_progress;

  /* control interval of dpdk link state and stat polling */
  f64 link_state_poll_interval;
  f64 stat_poll_interval;

  dpdk_config_main_t *conf;
  dpdk_port_conf_t default_port_conf;

  /* API message ID base */
  u16 msg_id_base;

  /* logging */
  vlib_log_class_t log_default;
  vlib_log_class_t log_cryptodev;
} dpdk_main_t;

extern dpdk_main_t dpdk_main;

typedef struct
{
  u32 buffer_index;
  u16 device_index;
  u8 queue_index;
  struct rte_mbuf mb;
  u8 data[256];			/* First 256 data bytes, used for hexdump */
  /* Copy of VLIB buffer; packet data stored in pre_data. */
  vlib_buffer_t buffer;
} dpdk_tx_trace_t;

typedef struct
{
  u32 buffer_index;
  u16 device_index;
  u16 queue_index;
  struct rte_mbuf mb;
  u8 data[256];			/* First 256 data bytes, used for hexdump */
  vlib_buffer_t buffer;		/* Copy of VLIB buffer; pkt data stored in pre_data. */
} dpdk_rx_trace_t;

void dpdk_device_setup (dpdk_device_t * xd);
void dpdk_device_start (dpdk_device_t * xd);
void dpdk_device_stop (dpdk_device_t * xd);
int dpdk_port_state_callback (dpdk_portid_t port_id,
			      enum rte_eth_event_type type,
			      void *param, void *ret_param);

#define foreach_dpdk_error						\
  _(NONE, "no error")							\
  _(RX_PACKET_ERROR, "Rx packet errors")				\
  _(RX_BAD_FCS, "Rx bad fcs")						\
  _(IP_CHECKSUM_ERROR, "Rx ip checksum errors")				\
  _(RX_ALLOC_FAIL, "rx buf alloc from free list failed")		\
  _(RX_ALLOC_NO_PHYSMEM, "rx buf alloc failed no physmem")		\
  _(RX_ALLOC_DROP_PKTS, "rx packets dropped due to alloc error")

typedef enum
{
#define _(f,s) DPDK_ERROR_##f,
  foreach_dpdk_error
#undef _
    DPDK_N_ERROR,
} dpdk_error_t;

#define dpdk_log_err(...) \
  vlib_log(VLIB_LOG_LEVEL_ERR, dpdk_main.log_default, __VA_ARGS__)
#define dpdk_log_warn(...) \
  vlib_log(VLIB_LOG_LEVEL_WARNING, dpdk_main.log_default, __VA_ARGS__)
#define dpdk_log_notice(...) \
  vlib_log(VLIB_LOG_LEVEL_NOTICE, dpdk_main.log_default, __VA_ARGS__)
#define dpdk_log_info(...) \
  vlib_log(VLIB_LOG_LEVEL_INFO, dpdk_main.log_default, __VA_ARGS__)
#define dpdk_log_debug(...)                                                   \
  vlib_log (VLIB_LOG_LEVEL_DEBUG, dpdk_main.log_default, __VA_ARGS__)

void dpdk_update_link_state (dpdk_device_t * xd, f64 now);

#define foreach_dpdk_rss_hf                                                   \
  _ (0, RTE_ETH_RSS_FRAG_IPV4, "ipv4-frag")                                   \
  _ (1, RTE_ETH_RSS_NONFRAG_IPV4_TCP, "ipv4-tcp")                             \
  _ (2, RTE_ETH_RSS_NONFRAG_IPV4_UDP, "ipv4-udp")                             \
  _ (3, RTE_ETH_RSS_NONFRAG_IPV4_SCTP, "ipv4-sctp")                           \
  _ (4, RTE_ETH_RSS_NONFRAG_IPV4_OTHER, "ipv4-other")                         \
  _ (5, RTE_ETH_RSS_IPV4, "ipv4")                                             \
  _ (6, RTE_ETH_RSS_IPV6_TCP_EX, "ipv6-tcp-ex")                               \
  _ (7, RTE_ETH_RSS_IPV6_UDP_EX, "ipv6-udp-ex")                               \
  _ (8, RTE_ETH_RSS_FRAG_IPV6, "ipv6-frag")                                   \
  _ (9, RTE_ETH_RSS_NONFRAG_IPV6_TCP, "ipv6-tcp")                             \
  _ (10, RTE_ETH_RSS_NONFRAG_IPV6_UDP, "ipv6-udp")                            \
  _ (11, RTE_ETH_RSS_NONFRAG_IPV6_SCTP, "ipv6-sctp")                          \
  _ (12, RTE_ETH_RSS_NONFRAG_IPV6_OTHER, "ipv6-other")                        \
  _ (13, RTE_ETH_RSS_IPV6_EX, "ipv6-ex")                                      \
  _ (14, RTE_ETH_RSS_IPV6, "ipv6")                                            \
  _ (15, RTE_ETH_RSS_L2_PAYLOAD, "l2-payload")                                \
  _ (16, RTE_ETH_RSS_PORT, "port")                                            \
  _ (17, RTE_ETH_RSS_VXLAN, "vxlan")                                          \
  _ (18, RTE_ETH_RSS_GENEVE, "geneve")                                        \
  _ (19, RTE_ETH_RSS_NVGRE, "nvgre")                                          \
  _ (20, RTE_ETH_RSS_GTPU, "gtpu")                                            \
  _ (21, RTE_ETH_RSS_ESP, "esp")                                              \
  _ (60, RTE_ETH_RSS_L4_DST_ONLY, "l4-dst-only")                              \
  _ (61, RTE_ETH_RSS_L4_SRC_ONLY, "l4-src-only")                              \
  _ (62, RTE_ETH_RSS_L3_DST_ONLY, "l3-dst-only")                              \
  _ (63, RTE_ETH_RSS_L3_SRC_ONLY, "l3-src-only")

format_function_t format_dpdk_device_name;
format_function_t format_dpdk_device;
format_function_t format_dpdk_device_errors;
format_function_t format_dpdk_tx_trace;
format_function_t format_dpdk_rx_trace;
format_function_t format_dpdk_rte_mbuf;
format_function_t format_dpdk_rx_rte_mbuf;
format_function_t format_dpdk_flow;
format_function_t format_dpdk_rss_hf_name;
format_function_t format_dpdk_rx_offload_caps;
format_function_t format_dpdk_tx_offload_caps;
format_function_t format_dpdk_burst_fn;
format_function_t format_dpdk_rte_device;
vnet_flow_dev_ops_function_t dpdk_flow_ops_fn;

clib_error_t *unformat_rss_fn (unformat_input_t * input, uword * rss_fn);

struct rte_pci_device *dpdk_get_pci_device (const struct rte_eth_dev_info
					    *info);
struct rte_vmbus_device *
dpdk_get_vmbus_device (const struct rte_eth_dev_info *info);
void dpdk_cli_reference (void);

#if CLI_DEBUG
int dpdk_buffer_validate_trajectory_all (u32 * uninitialized);
void dpdk_buffer_poison_trajectory_all (void);
#endif

#endif /* __included_dpdk_h__ */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */