ceph/src/seastar/dpdk/drivers/net/tap/rte_eth_tap.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2017 6WIND S.A.
   3  * Copyright 2017 Mellanox Technologies, Ltd
   4  */
   5
   6 #ifndef _RTE_ETH_TAP_H_
   7 #define _RTE_ETH_TAP_H_
   8
   9 #include <sys/queue.h>
  10 #include <sys/uio.h>
  11 #include <inttypes.h>
  12 #include <net/if.h>
  13
  14 #include <linux/if_tun.h>
  15
  16 #include <rte_ethdev_driver.h>
  17 #include <rte_ether.h>
  18 #include <rte_gso.h>
  19 #include "tap_log.h"
  20
  21 #ifdef IFF_MULTI_QUEUE
  22 #define RTE_PMD_TAP_MAX_QUEUES  TAP_MAX_QUEUES
  23 #else
  24 #define RTE_PMD_TAP_MAX_QUEUES  1
  25 #endif
  26 #define MAX_GSO_MBUFS 64
  27
  28 enum rte_tuntap_type {
  29         ETH_TUNTAP_TYPE_UNKNOWN,
  30         ETH_TUNTAP_TYPE_TUN,
  31         ETH_TUNTAP_TYPE_TAP,
  32         ETH_TUNTAP_TYPE_MAX,
  33 };
  34
  35 struct pkt_stats {
  36         uint64_t opackets;              /* Number of output packets */
  37         uint64_t ipackets;              /* Number of input packets */
  38         uint64_t obytes;                /* Number of bytes on output */
  39         uint64_t ibytes;                /* Number of bytes on input */
  40         uint64_t errs;                  /* Number of TX error packets */
  41         uint64_t ierrors;               /* Number of RX error packets */
  42         uint64_t rx_nombuf;             /* Nb of RX mbuf alloc failures */
  43 };
  44
  45 struct rx_queue {
  46         struct rte_mempool *mp;         /* Mempool for RX packets */
  47         uint32_t trigger_seen;          /* Last seen Rx trigger value */
  48         uint16_t in_port;               /* Port ID */
  49         uint16_t queue_id;              /* queue ID*/
  50         struct pkt_stats stats;         /* Stats for this RX queue */
  51         uint16_t nb_rx_desc;            /* max number of mbufs available */
  52         struct rte_eth_rxmode *rxmode;  /* RX features */
  53         struct rte_mbuf *pool;          /* mbufs pool for this queue */
  54         struct iovec (*iovecs)[];       /* descriptors for this queue */
  55         struct tun_pi pi;               /* packet info for iovecs */
  56 };
  57
  58 struct tx_queue {
  59         int type;                       /* Type field - TUN|TAP */
  60         uint16_t *mtu;                  /* Pointer to MTU from dev_data */
  61         uint16_t csum:1;                /* Enable checksum offloading */
  62         struct pkt_stats stats;         /* Stats for this TX queue */
  63         struct rte_gso_ctx gso_ctx;     /* GSO context */
  64         uint16_t out_port;              /* Port ID */
  65         uint16_t queue_id;              /* queue ID*/
  66 };
  67
  68 struct pmd_internals {
  69         struct rte_eth_dev *dev;          /* Ethernet device. */
  70         char remote_iface[RTE_ETH_NAME_MAX_LEN]; /* Remote netdevice name */
  71         char name[RTE_ETH_NAME_MAX_LEN];  /* Internal Tap device name */
  72         int type;                         /* Type field - TUN|TAP */
  73         struct ether_addr eth_addr;       /* Mac address of the device port */
  74         struct ifreq remote_initial_flags;   /* Remote netdevice flags on init */
  75         int remote_if_index;              /* remote netdevice IF_INDEX */
  76         int if_index;                     /* IF_INDEX for the port */
  77         int ioctl_sock;                   /* socket for ioctl calls */
  78         int nlsk_fd;                      /* Netlink socket fd */
  79         int flow_isolate;                 /* 1 if flow isolation is enabled */
  80         int flower_support;               /* 1 if kernel supports, else 0 */
  81         int flower_vlan_support;          /* 1 if kernel supports, else 0 */
  82         int rss_enabled;                  /* 1 if RSS is enabled, else 0 */
  83         /* implicit rules set when RSS is enabled */
  84         int map_fd;                       /* BPF RSS map fd */
  85         int bpf_fd[RTE_PMD_TAP_MAX_QUEUES];/* List of bpf fds per queue */
  86         LIST_HEAD(tap_rss_flows, rte_flow) rss_flows;
  87         LIST_HEAD(tap_flows, rte_flow) flows;        /* rte_flow rules */
  88         /* implicit rte_flow rules set when a remote device is active */
  89         LIST_HEAD(tap_implicit_flows, rte_flow) implicit_flows;
  90         struct rx_queue rxq[RTE_PMD_TAP_MAX_QUEUES]; /* List of RX queues */
  91         struct tx_queue txq[RTE_PMD_TAP_MAX_QUEUES]; /* List of TX queues */
  92         struct rte_intr_handle intr_handle;          /* LSC interrupt handle. */
  93         int ka_fd;                        /* keep-alive file descriptor */
  94 };
  95
  96 struct pmd_process_private {
  97         int rxq_fds[RTE_PMD_TAP_MAX_QUEUES];
  98         int txq_fds[RTE_PMD_TAP_MAX_QUEUES];
  99 };
 100
 101 /* tap_intr.c */
 102
 103 int tap_rx_intr_vec_set(struct rte_eth_dev *dev, int set);
 104
 105 #endif /* _RTE_ETH_TAP_H_ */