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/*-
* BSD LICENSE
*
* Copyright 2017 6WIND S.A.
* Copyright 2017 Mellanox.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of 6WIND S.A. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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.h>
#include <rte_ether.h>
#ifdef IFF_MULTI_QUEUE
#define RTE_PMD_TAP_MAX_QUEUES 16
#else
#define RTE_PMD_TAP_MAX_QUEUES 1
#endif
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 */
int fd;
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 fd;
uint16_t *mtu; /* Pointer to MTU from dev_data */
struct pkt_stats stats; /* Stats for this TX queue */
};
struct pmd_internals {
char remote_iface[RTE_ETH_NAME_MAX_LEN]; /* Remote netdevice name */
char name[RTE_ETH_NAME_MAX_LEN]; /* Internal Tap device name */
uint16_t nb_queues; /* Number of queues supported */
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 */
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. */
};
#endif /* _RTE_ETH_TAP_H_ */
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