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/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Hyra 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 _NET_IF_VAR_H_
#define _NET_IF_VAR_H_
#include <sys/queue.h>
#include <sys/types.h>
#include <net/if.h>
#include <net/netbuf.h>
#define NETIF_ADDR_LEN 32 /* In bytes */
/* Return values for netif hooks */
#define NETIF_ENQ_OK 0 /* Enqueued */
#define NETIF_ENQ_FLUSHED 1 /* Internal queue flushed */
/* Interface types */
#define NETIF_TYPE_ANY 0 /* Any type */
#define NETIF_TYPE_WIRE 1 /* Ethernet */
/*
* Represents the address of a network
* interface.
*
* @data: Raw address bytes
*/
struct netif_addr {
uint8_t data[NETIF_ADDR_LEN];
};
/*
* Represents a network interface
*
* @name: Interface name
* @type: Interface type (see NETIF_TYPE*)
* @tx_enq: Enqueue a packet
* @tx_start: Start a packet
*
* XXX: tx_enq() returns 0 on success and 1 if a flush was needed
* and the packets have been transmitted. Less than zero values
* indicate failure.
*/
struct netif {
char name[IFNAMESIZ];
uint8_t type;
TAILQ_ENTRY(netif) link;
struct netif_addr addr;
int(*tx_enq)(struct netif *nifp, struct netbuf *nbp, void *data);
void(*tx_start)(struct netif *nifp);
};
void netif_add(struct netif *nifp);
int netif_lookup(const char *name, uint8_t type, struct netif **res);
#endif /* !_NET_IF_VAR_H_ */
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