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 <ethdev_driver.h> 17 #include <rte_ether.h> 18 #include <rte_gso.h> 19 20 #include "tap_log.h" 21 22 #ifdef IFF_MULTI_QUEUE 23 #define RTE_PMD_TAP_MAX_QUEUES TAP_MAX_QUEUES 24 #else 25 #define RTE_PMD_TAP_MAX_QUEUES 1 26 #endif 27 #define MAX_GSO_MBUFS 64 28 29 enum rte_tuntap_type { 30 ETH_TUNTAP_TYPE_UNKNOWN, 31 ETH_TUNTAP_TYPE_TUN, 32 ETH_TUNTAP_TYPE_TAP, 33 ETH_TUNTAP_TYPE_MAX, 34 }; 35 36 struct pkt_stats { 37 uint64_t opackets; /* Number of output packets */ 38 uint64_t ipackets; /* Number of input packets */ 39 uint64_t obytes; /* Number of bytes on output */ 40 uint64_t ibytes; /* Number of bytes on input */ 41 uint64_t errs; /* Number of TX error packets */ 42 uint64_t ierrors; /* Number of RX error packets */ 43 uint64_t rx_nombuf; /* Nb of RX mbuf alloc failures */ 44 }; 45 46 struct rx_queue { 47 struct rte_mempool *mp; /* Mempool for RX packets */ 48 uint32_t trigger_seen; /* Last seen Rx trigger value */ 49 uint16_t in_port; /* Port ID */ 50 uint16_t queue_id; /* queue ID*/ 51 struct pkt_stats stats; /* Stats for this RX queue */ 52 uint16_t nb_rx_desc; /* max number of mbufs available */ 53 struct rte_eth_rxmode *rxmode; /* RX features */ 54 struct rte_mbuf *pool; /* mbufs pool for this queue */ 55 struct iovec (*iovecs)[]; /* descriptors for this queue */ 56 struct tun_pi pi; /* packet info for iovecs */ 57 }; 58 59 struct tx_queue { 60 int type; /* Type field - TUN|TAP */ 61 uint16_t *mtu; /* Pointer to MTU from dev_data */ 62 uint16_t csum:1; /* Enable checksum offloading */ 63 struct pkt_stats stats; /* Stats for this TX queue */ 64 struct rte_gso_ctx gso_ctx; /* GSO context */ 65 uint16_t out_port; /* Port ID */ 66 uint16_t queue_id; /* queue ID*/ 67 }; 68 69 struct pmd_internals { 70 struct rte_eth_dev *dev; /* Ethernet device. */ 71 char remote_iface[RTE_ETH_NAME_MAX_LEN]; /* Remote netdevice name */ 72 char name[RTE_ETH_NAME_MAX_LEN]; /* Internal Tap device name */ 73 int type; /* Type field - TUN|TAP */ 74 int persist; /* 1 if keep link up, else 0 */ 75 struct rte_ether_addr eth_addr; /* Mac address of the device port */ 76 struct ifreq remote_initial_flags;/* Remote netdevice flags on init */ 77 int remote_if_index; /* remote netdevice IF_INDEX */ 78 int if_index; /* IF_INDEX for the port */ 79 int ioctl_sock; /* socket for ioctl calls */ 80 81 #ifdef HAVE_TCA_FLOWER 82 int nlsk_fd; /* Netlink socket fd */ 83 int flow_isolate; /* 1 if flow isolation is enabled */ 84 85 struct tap_rss *rss; /* BPF program */ 86 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 #endif 91 92 struct rx_queue rxq[RTE_PMD_TAP_MAX_QUEUES]; /* List of RX queues */ 93 struct tx_queue txq[RTE_PMD_TAP_MAX_QUEUES]; /* List of TX queues */ 94 struct rte_intr_handle *intr_handle; /* LSC interrupt handle. */ 95 int ka_fd; /* keep-alive file descriptor */ 96 struct rte_mempool *gso_ctx_mp; /* Mempool for GSO packets */ 97 }; 98 99 struct pmd_process_private { 100 int fds[RTE_PMD_TAP_MAX_QUEUES]; 101 }; 102 103 /* tap_intr.c */ 104 105 int tap_rx_intr_vec_set(struct rte_eth_dev *dev, int set); 106 107 #endif /* _RTE_ETH_TAP_H_ */ 108