/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2015 Joyent, Inc. All rights reserved.
 */

#ifndef _PACKET_H
#define _PACKET_H

#include <sys/socket_impl.h>
#include <net/if_arp.h>
#include <net/bpf.h>

/*
 * With which we do the reverse of what it libpcap does....
 */
#define PACKET_OUTGOING         LINUX_SLL_OUTGOING
#define PACKET_HOST             LINUX_SLL_HOST
#define PACKET_BROADCAST        LINUX_SLL_BROADCAST
#define PACKET_MULTICAST        LINUX_SLL_MULTICAST
#define PACKET_OTHERHOST        LINUX_SLL_OTHERHOST

#define PACKET_STATISTICS_SHORT 1
#define PACKET_ADD_MEMBERSHIP   2
#define PACKET_DROP_MEMBERSHIP  3
#define PACKET_AUXDATA          4
#define PACKET_STATISTICS       5


struct packet_mreq {
        uint32_t        mr_ifindex;
        uint16_t        mr_type;
        uint16_t        mr_alen;
        uint8_t         mr_address[8];
};

#define PACKET_MR_MULTICAST     1
#define PACKET_MR_PROMISC       2
#define PACKET_MR_ALLMULTI      3

typedef enum tpkt_status_e {
        TP_STATUS_KERNEL,
        TP_STATUS_USER,
        TP_STATUS_COPY,
        TP_STATUS_LOSING,
        TP_STATUS_CSUMNOTREADY
} tpkt_status_t;

struct tpacket_auxdata {                /* tp_macoff/tp_netoff ?? */
        tpkt_status_t   tp_status;
        uint32_t        tp_len;
        uint32_t        tp_snaplen;
        uint16_t        tp_macoff;
        uint16_t        tp_netoff;
        uint16_t        tp_vlan_vci;
};

struct tpacket_hdr {                    /* tp_macoff/tp_netoff ?? */
        uint64_t        tp_status;
        uint32_t        tp_len;
        uint32_t        tp_snaplen;
        uint16_t        tp_macoff;
        uint16_t        tp_netoff;
        uint32_t        tp_sec;
        uint32_t        tp_usec;
};

struct tpacket2_hdr {                   /* tp_macoff/tp_netoff ?? */
        tpkt_status_t   tp_status;
        uint32_t        tp_len;
        uint32_t        tp_snaplen;
        uint16_t        tp_macoff;
        uint16_t        tp_netoff;
        uint32_t        tp_sec;
        uint32_t        tp_nsec;
        uint16_t        tp_vlan_tci;
};

struct tpacket_stats {
        uint32_t        tp_packets;
        uint32_t        tp_drops;
};

struct tpacket_stats_short {
        uint16_t        tp_packets;
        uint16_t        tp_drops;
};

struct sock_filter {                    /* Fields named from bpf_insn */
        uint16_t        code;
        uint8_t         jt;
        uint8_t         jf;
        uint32_t        k;
};

struct sock_fprog {
        uint16_t                len;
        struct sock_filter      *filter;
};

/*
 * Linux ARPHRD_ symbols needed...
 *
 * The numbers above 50000 are because their real value is unknown from
 * libpcap's source, so a number has been chosen that is unlikely to be
 * confused with the real one on Linux. Those that are already found in
 * Solaris inside <net/if_arp.h> may have a different value to that found
 * in Linux but it should be used instead as the Solaris value originates
 * from the IANA whereas the Linux values seem to ignore it.
 */
/* ARPHRD_AX25                          see <net/if_arp.h> */
/* ARPHRD_CHAOS                         see <net/if_arp.h> */
#define ARPHRD_CSLIP                    50005
#define ARPHRD_CSLIP6                   50006
#define ARPHRD_DLCI                     15
/* ARPHRD_EETHER                        see <net/if_arp.h> */
/* ARPHRD_ETHER                         see <net/if_arp.h> */
#define ARPHRD_FCAL                     785
#define ARPHRD_FCFABRIC                 787
#define ARPHRD_FCPL                     786
#define ARPHRD_FCPP                     784
#define ARPHRD_FRAD                     770
#define ARPHRD_FDDI                     774
/* ARPHRD_IEEE802                       see <net/if_arp.h> */
#define ARPHRD_IEEE802_TR               800
#define ARPHRD_IEEE80211                801
#define ARPHRD_IEEE80211_PRISM          802
#define ARPHRD_IEEE80211_RADIOTAP       803
#define ARPHRD_IRDA                     783
#define ARPHRD_LAPD                     8445
#define ARPHRD_LOCALTLK                 50010
#define ARPHRD_LOOPBACK                 50011
/* ARPHRD_METRICOM                      see <net/if_arp.h> */
#define ARPHRD_PRONET                   50013
#define ARPHRD_PPP                      50014
#define ARPHRD_RAWHDLC                  518
#define ARPHRD_SIT                      776
#define ARPHRD_SLIP6                    50015
#define ARPHRD_SLIP                     50016
/* ARPHRD_TUNNEL                        see <net/if_arp.h> */

#define ETH_P_ALL                       0
#define ETH_P_802_2                     0xaa    /* LSAP_SAP */
#define ETH_P_803_3                     0
#define ETH_P_IP                        0x800
#define ETH_P_ARP                       0x806
#define ETH_P_IPV6                      0x86dd

#ifdef _KERNEL
/*
 * PFP socket structure.
 */
typedef struct pfpsock {
        struct bpf_program              ps_bpf;
        krwlock_t                       ps_bpflock;
        sock_upper_handle_t             ps_upper;
        sock_upcalls_t                  *ps_upcalls;
        mac_handle_t                    ps_mh;
        mac_client_handle_t             ps_mch;
        mac_promisc_handle_t            ps_phd;
        int                             ps_type;
        int                             ps_proto;
        uint_t                          ps_max_sdu;
        boolean_t                       ps_bound;
        mac_client_promisc_type_t       ps_promisc;
        boolean_t                       ps_auxdata;
        struct tpacket_stats            ps_stats;
        struct sockaddr_ll              ps_sock;
        datalink_id_t                   ps_linkid;
        kmutex_t                        ps_lock;
        boolean_t                       ps_flow_ctrld;
        ulong_t                         ps_flow_ctrl_drops;
        timespec_t                      ps_timestamp;
        size_t                          ps_rcvbuf;
} pfpsock_t;

typedef struct pfp_kstats_s {
        kstat_named_t   kp_recv_mac_hdr_fail;
        kstat_named_t   kp_recv_bad_proto;
        kstat_named_t   kp_recv_alloc_fail;
        kstat_named_t   kp_recv_ok;
        kstat_named_t   kp_recv_fail;
        kstat_named_t   kp_recv_filtered;
        kstat_named_t   kp_recv_flow_cntrld;
        kstat_named_t   kp_send_unbound;
        kstat_named_t   kp_send_failed;
        kstat_named_t   kp_send_too_big;
        kstat_named_t   kp_send_alloc_fail;
        kstat_named_t   kp_send_uiomove_fail;
        kstat_named_t   kp_send_no_memory;
        kstat_named_t   kp_send_open_fail;
        kstat_named_t   kp_send_wrong_family;
        kstat_named_t   kp_send_short_msg;
        kstat_named_t   kp_send_ok;
} pfp_kstats_t;
#endif /* _KERNEL */

#endif /* _PACKET_H */