1 /*- 2 * BSD LICENSE 3 * 4 * Copyright 2017 6WIND S.A. 5 * Copyright 2017 Mellanox. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of 6WIND S.A. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _RTE_ETH_TAP_H_ 35 #define _RTE_ETH_TAP_H_ 36 37 #include <sys/queue.h> 38 #include <sys/uio.h> 39 #include <inttypes.h> 40 #include <net/if.h> 41 42 #include <linux/if_tun.h> 43 44 #include <rte_ethdev.h> 45 #include <rte_ether.h> 46 47 #ifdef IFF_MULTI_QUEUE 48 #define RTE_PMD_TAP_MAX_QUEUES 16 49 #else 50 #define RTE_PMD_TAP_MAX_QUEUES 1 51 #endif 52 53 struct pkt_stats { 54 uint64_t opackets; /* Number of output packets */ 55 uint64_t ipackets; /* Number of input packets */ 56 uint64_t obytes; /* Number of bytes on output */ 57 uint64_t ibytes; /* Number of bytes on input */ 58 uint64_t errs; /* Number of TX error packets */ 59 uint64_t ierrors; /* Number of RX error packets */ 60 uint64_t rx_nombuf; /* Nb of RX mbuf alloc failures */ 61 }; 62 63 struct rx_queue { 64 struct rte_mempool *mp; /* Mempool for RX packets */ 65 uint32_t trigger_seen; /* Last seen Rx trigger value */ 66 uint16_t in_port; /* Port ID */ 67 int fd; 68 struct pkt_stats stats; /* Stats for this RX queue */ 69 uint16_t nb_rx_desc; /* max number of mbufs available */ 70 struct rte_eth_rxmode *rxmode; /* RX features */ 71 struct rte_mbuf *pool; /* mbufs pool for this queue */ 72 struct iovec (*iovecs)[]; /* descriptors for this queue */ 73 struct tun_pi pi; /* packet info for iovecs */ 74 }; 75 76 struct tx_queue { 77 int fd; 78 uint16_t *mtu; /* Pointer to MTU from dev_data */ 79 struct pkt_stats stats; /* Stats for this TX queue */ 80 }; 81 82 struct pmd_internals { 83 struct rte_eth_dev *dev; /* Ethernet device. */ 84 char remote_iface[RTE_ETH_NAME_MAX_LEN]; /* Remote netdevice name */ 85 char name[RTE_ETH_NAME_MAX_LEN]; /* Internal Tap device name */ 86 struct ether_addr eth_addr; /* Mac address of the device port */ 87 struct ifreq remote_initial_flags; /* Remote netdevice flags on init */ 88 int remote_if_index; /* remote netdevice IF_INDEX */ 89 int if_index; /* IF_INDEX for the port */ 90 int ioctl_sock; /* socket for ioctl calls */ 91 int nlsk_fd; /* Netlink socket fd */ 92 int flow_isolate; /* 1 if flow isolation is enabled */ 93 LIST_HEAD(tap_flows, rte_flow) flows; /* rte_flow rules */ 94 /* implicit rte_flow rules set when a remote device is active */ 95 LIST_HEAD(tap_implicit_flows, rte_flow) implicit_flows; 96 struct rx_queue rxq[RTE_PMD_TAP_MAX_QUEUES]; /* List of RX queues */ 97 struct tx_queue txq[RTE_PMD_TAP_MAX_QUEUES]; /* List of TX queues */ 98 struct rte_intr_handle intr_handle; /* LSC interrupt handle. */ 99 }; 100 101 #endif /* _RTE_ETH_TAP_H_ */ 102