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 #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 rte_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 struct rte_mempool *gso_ctx_mp; /* Mempool for GSO packets */ 95 }; 96 97 struct pmd_process_private { 98 int rxq_fds[RTE_PMD_TAP_MAX_QUEUES]; 99 int txq_fds[RTE_PMD_TAP_MAX_QUEUES]; 100 }; 101 102 /* tap_intr.c */ 103 104 int tap_rx_intr_vec_set(struct rte_eth_dev *dev, int set); 105 106 #endif /* _RTE_ETH_TAP_H_ */ 107