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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2017 6WIND S.A.
* Copyright 2017 Mellanox Technologies, Ltd
*/
#ifndef _RTE_ETH_TAP_H_
#define _RTE_ETH_TAP_H_
#include <sys/queue.h>
#include <sys/uio.h>
#include <inttypes.h>
#include <net/if.h>
#include <linux/if_tun.h>
#include <rte_ethdev_driver.h>
#include <rte_ether.h>
#include <rte_gso.h>
#include "tap_log.h"
#ifdef IFF_MULTI_QUEUE
#define RTE_PMD_TAP_MAX_QUEUES TAP_MAX_QUEUES
#else
#define RTE_PMD_TAP_MAX_QUEUES 1
#endif
#define MAX_GSO_MBUFS 64
enum rte_tuntap_type {
ETH_TUNTAP_TYPE_UNKNOWN,
ETH_TUNTAP_TYPE_TUN,
ETH_TUNTAP_TYPE_TAP,
ETH_TUNTAP_TYPE_MAX,
};
struct pkt_stats {
uint64_t opackets; /* Number of output packets */
uint64_t ipackets; /* Number of input packets */
uint64_t obytes; /* Number of bytes on output */
uint64_t ibytes; /* Number of bytes on input */
uint64_t errs; /* Number of TX error packets */
uint64_t ierrors; /* Number of RX error packets */
uint64_t rx_nombuf; /* Nb of RX mbuf alloc failures */
};
struct rx_queue {
struct rte_mempool *mp; /* Mempool for RX packets */
uint32_t trigger_seen; /* Last seen Rx trigger value */
uint16_t in_port; /* Port ID */
uint16_t queue_id; /* queue ID*/
struct pkt_stats stats; /* Stats for this RX queue */
uint16_t nb_rx_desc; /* max number of mbufs available */
struct rte_eth_rxmode *rxmode; /* RX features */
struct rte_mbuf *pool; /* mbufs pool for this queue */
struct iovec (*iovecs)[]; /* descriptors for this queue */
struct tun_pi pi; /* packet info for iovecs */
};
struct tx_queue {
int type; /* Type field - TUN|TAP */
uint16_t *mtu; /* Pointer to MTU from dev_data */
uint16_t csum:1; /* Enable checksum offloading */
struct pkt_stats stats; /* Stats for this TX queue */
struct rte_gso_ctx gso_ctx; /* GSO context */
uint16_t out_port; /* Port ID */
uint16_t queue_id; /* queue ID*/
};
struct pmd_internals {
struct rte_eth_dev *dev; /* Ethernet device. */
char remote_iface[RTE_ETH_NAME_MAX_LEN]; /* Remote netdevice name */
char name[RTE_ETH_NAME_MAX_LEN]; /* Internal Tap device name */
int type; /* Type field - TUN|TAP */
struct ether_addr eth_addr; /* Mac address of the device port */
struct ifreq remote_initial_flags; /* Remote netdevice flags on init */
int remote_if_index; /* remote netdevice IF_INDEX */
int if_index; /* IF_INDEX for the port */
int ioctl_sock; /* socket for ioctl calls */
int nlsk_fd; /* Netlink socket fd */
int flow_isolate; /* 1 if flow isolation is enabled */
int flower_support; /* 1 if kernel supports, else 0 */
int flower_vlan_support; /* 1 if kernel supports, else 0 */
int rss_enabled; /* 1 if RSS is enabled, else 0 */
/* implicit rules set when RSS is enabled */
int map_fd; /* BPF RSS map fd */
int bpf_fd[RTE_PMD_TAP_MAX_QUEUES];/* List of bpf fds per queue */
LIST_HEAD(tap_rss_flows, rte_flow) rss_flows;
LIST_HEAD(tap_flows, rte_flow) flows; /* rte_flow rules */
/* implicit rte_flow rules set when a remote device is active */
LIST_HEAD(tap_implicit_flows, rte_flow) implicit_flows;
struct rx_queue rxq[RTE_PMD_TAP_MAX_QUEUES]; /* List of RX queues */
struct tx_queue txq[RTE_PMD_TAP_MAX_QUEUES]; /* List of TX queues */
struct rte_intr_handle intr_handle; /* LSC interrupt handle. */
int ka_fd; /* keep-alive file descriptor */
};
struct pmd_process_private {
int rxq_fds[RTE_PMD_TAP_MAX_QUEUES];
int txq_fds[RTE_PMD_TAP_MAX_QUEUES];
};
/* tap_intr.c */
int tap_rx_intr_vec_set(struct rte_eth_dev *dev, int set);
#endif /* _RTE_ETH_TAP_H_ */
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