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