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Diffstat (limited to 'sys/net/if_var.h')
| -rw-r--r-- | sys/net/if_var.h | 761 |
1 files changed, 761 insertions, 0 deletions
diff --git a/sys/net/if_var.h b/sys/net/if_var.h new file mode 100644 index 000000000000..961259bb0ca1 --- /dev/null +++ b/sys/net/if_var.h @@ -0,0 +1,761 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1982, 1986, 1989, 1993 + * The Regents of the University of California. 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 the University 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 REGENTS 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 REGENTS 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_ + +/* + * Structures defining a network interface, providing a packet + * transport mechanism (ala level 0 of the PUP protocols). + * + * Each interface accepts output datagrams of a specified maximum + * length, and provides higher level routines with input datagrams + * received from its medium. + * + * Output occurs when the routine if_output is called, with three parameters: + * (*ifp->if_output)(ifp, m, dst, ro) + * Here m is the mbuf chain to be sent and dst is the destination address. + * The output routine encapsulates the supplied datagram if necessary, + * and then transmits it on its medium. + * + * On input, each interface unwraps the data received by it, and either + * places it on the input queue of an internetwork datagram routine + * and posts the associated software interrupt, or passes the datagram to a raw + * packet input routine. + * + * Routines exist for locating interfaces by their addresses + * or for locating an interface on a certain network, as well as more general + * routing and gateway routines maintaining information used to locate + * interfaces. These routines live in the files if.c and route.c + */ + +struct rtentry; /* ifa_rtrequest */ +struct socket; +struct carp_if; +struct carp_softc; +struct ifvlantrunk; +struct route; /* if_output */ +struct vnet; +struct ifmedia; +struct netmap_adapter; +struct debugnet_methods; + +#ifdef _KERNEL +#include <sys/_eventhandler.h> +#include <sys/mbuf.h> /* ifqueue only? */ +#include <sys/buf_ring.h> +#include <net/vnet.h> +#endif /* _KERNEL */ +#include <sys/ck.h> +#include <sys/counter.h> +#include <sys/epoch.h> +#include <sys/lock.h> /* XXX */ +#include <sys/mutex.h> /* struct ifqueue */ +#include <sys/rwlock.h> /* XXX */ +#include <sys/sx.h> /* XXX */ +#include <sys/_task.h> /* if_link_task */ +#define IF_DUNIT_NONE -1 + +#include <net/altq/if_altq.h> + +CK_STAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ +CK_STAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ +CK_STAILQ_HEAD(ifmultihead, ifmultiaddr); +CK_STAILQ_HEAD(ifgrouphead, ifg_group); + +#ifdef _KERNEL +VNET_DECLARE(struct pfil_head *, link_pfil_head); +#define V_link_pfil_head VNET(link_pfil_head) +#define PFIL_ETHER_NAME "ethernet" + +#define HHOOK_IPSEC_INET 0 +#define HHOOK_IPSEC_INET6 1 +#define HHOOK_IPSEC_COUNT 2 +VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]); +VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]); +#define V_ipsec_hhh_in VNET(ipsec_hhh_in) +#define V_ipsec_hhh_out VNET(ipsec_hhh_out) +#endif /* _KERNEL */ + +typedef enum { + IFCOUNTER_IPACKETS = 0, + IFCOUNTER_IERRORS, + IFCOUNTER_OPACKETS, + IFCOUNTER_OERRORS, + IFCOUNTER_COLLISIONS, + IFCOUNTER_IBYTES, + IFCOUNTER_OBYTES, + IFCOUNTER_IMCASTS, + IFCOUNTER_OMCASTS, + IFCOUNTER_IQDROPS, + IFCOUNTER_OQDROPS, + IFCOUNTER_NOPROTO, + IFCOUNTERS /* Array size. */ +} ift_counter; + +typedef void (*if_start_fn_t)(if_t); +typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); +typedef void (*if_init_fn_t)(void *); +typedef void (*if_input_fn_t)(if_t, struct mbuf *); +typedef int (*if_output_fn_t)(if_t, struct mbuf *, const struct sockaddr *, + struct route *); +typedef void (*if_qflush_fn_t)(if_t); +typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); +typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); +typedef void (*if_reassign_fn_t)(if_t, struct vnet *, char *); +typedef int (*if_spdadd_fn_t)(if_t ifp, void *sp, void *inp, void **priv); +typedef int (*if_spddel_fn_t)(if_t ifp, void *sp, void *priv); +typedef int (*if_sa_newkey_fn_t)(if_t ifp, void *sav, u_int drv_spi, + void **privp); +typedef int (*if_sa_deinstall_fn_t)(if_t ifp, u_int drv_spi, void *priv); +struct seclifetime; +#define IF_SA_CNT_UPD 0x80000000 +enum IF_SA_CNT_WHICH { + IF_SA_CNT_IFP_HW_VAL = 1, + IF_SA_CNT_TOTAL_SW_VAL, + IF_SA_CNT_TOTAL_HW_VAL, + IF_SA_CNT_IFP_HW_UPD = IF_SA_CNT_IFP_HW_VAL | IF_SA_CNT_UPD, + IF_SA_CNT_TOTAL_SW_UPD = IF_SA_CNT_TOTAL_SW_VAL | IF_SA_CNT_UPD, + IF_SA_CNT_TOTAL_HW_UPD = IF_SA_CNT_TOTAL_HW_VAL | IF_SA_CNT_UPD, +}; +typedef int (*if_sa_cnt_fn_t)(if_t ifp, void *sa, + uint32_t drv_spi, void *priv, struct seclifetime *lt); +typedef int (*if_ipsec_hwassist_fn_t)(if_t ifp, void *sav, + u_int drv_spi,void *priv); + +struct ifnet_hw_tsomax { + u_int tsomaxbytes; /* TSO total burst length limit in bytes */ + u_int tsomaxsegcount; /* TSO maximum segment count */ + u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ +}; + +/* Interface encap request types */ +typedef enum { + IFENCAP_LL = 1 /* pre-calculate link-layer header */ +} ife_type; + +/* + * The structure below allows to request various pre-calculated L2/L3 headers + * for different media. Requests varies by type (rtype field). + * + * IFENCAP_LL type: pre-calculates link header based on address family + * and destination lladdr. + * + * Input data fields: + * buf: pointer to destination buffer + * bufsize: buffer size + * flags: IFENCAP_FLAG_BROADCAST if destination is broadcast + * family: address family defined by AF_ constant. + * lladdr: pointer to link-layer address + * lladdr_len: length of link-layer address + * hdata: pointer to L3 header (optional, used for ARP requests). + * Output data fields: + * buf: encap data is stored here + * bufsize: resulting encap length is stored here + * lladdr_off: offset of link-layer address from encap hdr start + * hdata: L3 header may be altered if necessary + */ + +struct if_encap_req { + u_char *buf; /* Destination buffer (w) */ + size_t bufsize; /* size of provided buffer (r) */ + ife_type rtype; /* request type (r) */ + uint32_t flags; /* Request flags (r) */ + int family; /* Address family AF_* (r) */ + int lladdr_off; /* offset from header start (w) */ + int lladdr_len; /* lladdr length (r) */ + char *lladdr; /* link-level address pointer (r) */ + char *hdata; /* Upper layer header data (rw) */ +}; + +#define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */ + +/* + * Network interface send tag support. The storage of "struct + * m_snd_tag" comes from the network driver and it is free to allocate + * as much additional space as it wants for its own use. + */ +struct ktls_session; +struct m_snd_tag; + +#define IF_SND_TAG_TYPE_RATE_LIMIT 0 +#define IF_SND_TAG_TYPE_UNLIMITED 1 +#define IF_SND_TAG_TYPE_TLS 2 +#define IF_SND_TAG_TYPE_TLS_RATE_LIMIT 3 +#define IF_SND_TAG_TYPE_TLS_RX 4 +#define IF_SND_TAG_TYPE_MAX 5 + +struct if_snd_tag_alloc_header { + uint32_t type; /* send tag type, see IF_SND_TAG_XXX */ + uint32_t flowid; /* mbuf hash value */ + uint32_t flowtype; /* mbuf hash type */ + uint8_t numa_domain; /* numa domain of associated inp */ +}; + +struct if_snd_tag_alloc_rate_limit { + struct if_snd_tag_alloc_header hdr; + uint64_t max_rate; /* in bytes/s */ + uint32_t flags; /* M_NOWAIT or M_WAITOK */ + uint32_t reserved; /* alignment */ +}; + +struct if_snd_tag_alloc_tls { + struct if_snd_tag_alloc_header hdr; + struct inpcb *inp; + const struct ktls_session *tls; +}; + +struct if_snd_tag_alloc_tls_rx { + struct if_snd_tag_alloc_header hdr; + struct inpcb *inp; + const struct ktls_session *tls; + uint16_t vlan_id; /* valid if non-zero */ +}; + +struct if_snd_tag_alloc_tls_rate_limit { + struct if_snd_tag_alloc_header hdr; + struct inpcb *inp; + const struct ktls_session *tls; + uint64_t max_rate; /* in bytes/s */ +}; + +struct if_snd_tag_rate_limit_params { + uint64_t max_rate; /* in bytes/s */ + uint32_t queue_level; /* 0 (empty) .. 65535 (full) */ +#define IF_SND_QUEUE_LEVEL_MIN 0 +#define IF_SND_QUEUE_LEVEL_MAX 65535 + uint32_t flags; /* M_NOWAIT or M_WAITOK */ +}; + +struct if_snd_tag_modify_tls_rx { + /* TCP sequence number of TLS header in host endian format */ + uint32_t tls_hdr_tcp_sn; + + /* + * TLS record length, including all headers, data and trailers. + * If the tls_rec_length is zero, it means HW encryption resumed. + */ + uint32_t tls_rec_length; + + /* TLS sequence number in host endian format */ + uint64_t tls_seq_number; +}; + +union if_snd_tag_alloc_params { + struct if_snd_tag_alloc_header hdr; + struct if_snd_tag_alloc_rate_limit rate_limit; + struct if_snd_tag_alloc_rate_limit unlimited; + struct if_snd_tag_alloc_tls tls; + struct if_snd_tag_alloc_tls_rx tls_rx; + struct if_snd_tag_alloc_tls_rate_limit tls_rate_limit; +}; + +union if_snd_tag_modify_params { + struct if_snd_tag_rate_limit_params rate_limit; + struct if_snd_tag_rate_limit_params unlimited; + struct if_snd_tag_rate_limit_params tls_rate_limit; + struct if_snd_tag_modify_tls_rx tls_rx; +}; + +union if_snd_tag_query_params { + struct if_snd_tag_rate_limit_params rate_limit; + struct if_snd_tag_rate_limit_params unlimited; + struct if_snd_tag_rate_limit_params tls_rate_limit; +}; + +typedef int (if_snd_tag_alloc_t)(if_t, union if_snd_tag_alloc_params *, + struct m_snd_tag **); +typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *); +typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *); +typedef void (if_snd_tag_free_t)(struct m_snd_tag *); +typedef struct m_snd_tag *(if_next_send_tag_t)(struct m_snd_tag *); +typedef int (if_snd_tag_status_str_t)(struct m_snd_tag *, char *buf, size_t *sz); + +struct if_snd_tag_sw { + if_snd_tag_modify_t *snd_tag_modify; + if_snd_tag_query_t *snd_tag_query; + if_snd_tag_free_t *snd_tag_free; + if_next_send_tag_t *next_snd_tag; + if_snd_tag_status_str_t *snd_tag_status_str; + u_int type; /* One of IF_SND_TAG_TYPE_*. */ +}; + +/* Query return flags */ +#define RT_NOSUPPORT 0x00000000 /* Not supported */ +#define RT_IS_INDIRECT 0x00000001 /* + * Interface like a lagg, select + * the actual interface for + * capabilities. + */ +#define RT_IS_SELECTABLE 0x00000002 /* + * No rate table, you select + * rates and the first + * number_of_rates are created. + */ +#define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */ +#define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */ +#define RT_IS_SETUP_REQ 0x00000010 /* The interface setup must be called before use */ + +struct if_ratelimit_query_results { + const uint64_t *rate_table; /* Pointer to table if present */ + uint32_t flags; /* Flags indicating results */ + uint32_t max_flows; /* Max flows using, 0=unlimited */ + uint32_t number_of_rates; /* How many unique rates can be created */ + uint32_t min_segment_burst; /* The amount the adapter bursts at each send */ +}; + +typedef void (if_ratelimit_query_t)(if_t, + struct if_ratelimit_query_results *); +typedef int (if_ratelimit_setup_t)(if_t, uint64_t, uint32_t); +#define IF_NODOM 255 +/* + * Locks for address lists on the network interface. + */ +#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF) +#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock) + +#define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock) +#define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock) +#define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock)) +#define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED) + +#ifdef _KERNEL +/* interface link layer address change event */ +typedef void (*iflladdr_event_handler_t)(void *, if_t); +EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); +/* interface address change event */ +typedef void (*ifaddr_event_handler_t)(void *, if_t); +EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); +typedef void (*ifaddr_event_ext_handler_t)(void *, if_t, struct ifaddr *, int); +EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); +#define IFADDR_EVENT_ADD 0 +#define IFADDR_EVENT_DEL 1 +/* new interface arrival event */ +typedef void (*ifnet_arrival_event_handler_t)(void *, if_t); +EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); +/* interface departure event */ +typedef void (*ifnet_departure_event_handler_t)(void *, if_t); +EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); +/* Interface link state change event */ +typedef void (*ifnet_link_event_handler_t)(void *, if_t, int); +EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); +/* Interface up/down event */ +#define IFNET_EVENT_UP 0 +#define IFNET_EVENT_DOWN 1 +#define IFNET_EVENT_PCP 2 /* priority code point, PCP */ +#define IFNET_EVENT_UPDATE_BAUDRATE 3 + +typedef void (*ifnet_event_fn)(void *, if_t ifp, int event); +EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); + +/* + * interface groups + */ +struct ifg_group { + char ifg_group[IFNAMSIZ]; + u_int ifg_refcnt; + void *ifg_pf_kif; + CK_STAILQ_HEAD(, ifg_member) ifg_members; + CK_STAILQ_ENTRY(ifg_group) ifg_next; +}; + +struct ifg_member { + CK_STAILQ_ENTRY(ifg_member) ifgm_next; + if_t ifgm_ifp; +}; + +struct ifg_list { + struct ifg_group *ifgl_group; + CK_STAILQ_ENTRY(ifg_list) ifgl_next; +}; + +#ifdef _SYS_EVENTHANDLER_H_ +/* group attach event */ +typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); +EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); +/* group detach event */ +typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); +EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); +/* group change event */ +typedef void (*group_change_event_handler_t)(void *, const char *); +EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); +#endif /* _SYS_EVENTHANDLER_H_ */ + +/* + * 72 was chosen below because it is the size of a TCP/IP + * header (40) + the minimum mss (32). + */ +#define IF_MINMTU 72 +#define IF_MAXMTU 65535 + +#define TOEDEV(ifp) if_getllsoftc(ifp) +#define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) + +/* + * The ifaddr structure contains information about one address + * of an interface. They are maintained by the different address families, + * are allocated and attached when an address is set, and are linked + * together so all addresses for an interface can be located. + * + * NOTE: a 'struct ifaddr' is always at the beginning of a larger + * chunk of malloc'ed memory, where we store the three addresses + * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. + */ +struct ifaddr { + struct sockaddr *ifa_addr; /* address of interface */ + struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ +#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ + struct sockaddr *ifa_netmask; /* used to determine subnet */ + if_t ifa_ifp; /* back-pointer to interface */ + struct carp_softc *ifa_carp; /* pointer to CARP data */ + CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ + u_short ifa_flags; /* mostly rt_flags for cloning */ +#define IFA_ROUTE RTF_UP /* route installed */ +#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ + u_int ifa_refcnt; /* references to this structure */ + + counter_u64_t ifa_ipackets; + counter_u64_t ifa_opackets; + counter_u64_t ifa_ibytes; + counter_u64_t ifa_obytes; + struct epoch_context ifa_epoch_ctx; +}; + +struct ifaddr * ifa_alloc(size_t size, int flags); +void ifa_free(struct ifaddr *ifa); +void ifa_ref(struct ifaddr *ifa); +int __result_use_check ifa_try_ref(struct ifaddr *ifa); + +/* + * Multicast address structure. This is analogous to the ifaddr + * structure except that it keeps track of multicast addresses. + */ +#define IFMA_F_ENQUEUED 0x1 +struct ifmultiaddr { + CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ + struct sockaddr *ifma_addr; /* address this membership is for */ + struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ + if_t ifma_ifp; /* back-pointer to interface */ + u_int ifma_refcount; /* reference count */ + int ifma_flags; + void *ifma_protospec; /* protocol-specific state, if any */ + struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ + struct epoch_context ifma_epoch_ctx; +}; + +extern struct sx ifnet_sxlock; + +#define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) +#define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) +#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) +#define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) +#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) +#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) + +/* + * Look up an ifnet given its index. The returned value protected from + * being freed by the network epoch. The _ref variant also acquires a + * reference that must be freed using if_rele(). + */ +if_t ifnet_byindex(u_int); +if_t ifnet_byindex_ref(u_int); + +/* + * ifnet_byindexgen() looks up ifnet by index and generation count, + * attempting to restore a weak pointer that had been stored across + * the epoch. + */ +if_t ifnet_byindexgen(uint16_t idx, uint16_t gen); + +VNET_DECLARE(struct ifnethead, ifnet); +VNET_DECLARE(struct ifgrouphead, ifg_head); +VNET_DECLARE(if_t, loif); /* first loopback interface */ + +#define V_ifnet VNET(ifnet) +#define V_ifg_head VNET(ifg_head) +#define V_loif VNET(loif) + +#ifdef MCAST_VERBOSE +#define MCDPRINTF printf +#else +#define MCDPRINTF(...) +#endif + +int if_addgroup(if_t, const char *); +int if_delgroup(if_t, const char *); +int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **); +int if_allmulti(if_t, int); +if_t if_alloc(u_char); +if_t if_alloc_dev(u_char, device_t dev); +void if_attach(if_t); +void if_dead(if_t); +int if_delmulti(if_t, struct sockaddr *); +void if_delmulti_ifma(struct ifmultiaddr *); +void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); +void if_detach(if_t); +void if_purgeaddrs(if_t); +void if_delallmulti(if_t); +void if_down(if_t); +struct ifmultiaddr * + if_findmulti(if_t, const struct sockaddr *); +void if_freemulti(struct ifmultiaddr *ifma); +void if_free(if_t); +void if_initname(if_t, const char *, int); +void if_link_state_change(if_t, int); +int if_printf(if_t, const char *, ...) __printflike(2, 3); +int if_log(if_t, int, const char *, ...) __printflike(3, 4); +void if_ref(if_t); +void if_rele(if_t); +bool __result_use_check if_try_ref(if_t); +int if_setlladdr(if_t, const u_char *, int); +int if_tunnel_check_nesting(if_t, struct mbuf *, uint32_t, int); +void if_up(if_t); +int ifioctl(struct socket *, u_long, caddr_t, struct thread *); +int ifpromisc(if_t, int); +if_t ifunit(const char *); +if_t ifunit_ref(const char *); + +int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); +int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); +int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); + +struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); +int ifa_ifwithaddr_check(const struct sockaddr *); +struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); +struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); +struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); +struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, + const struct sockaddr *, u_int); +struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, if_t); +int ifa_preferred(struct ifaddr *, struct ifaddr *); + +int if_simloop(if_t ifp, struct mbuf *m, int af, int hlen); + +typedef void *if_com_alloc_t(u_char type, if_t ifp); +typedef void if_com_free_t(void *com, u_char type); +void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); +void if_deregister_com_alloc(u_char type); +void if_data_copy(if_t, struct if_data *); +uint64_t if_get_counter_default(if_t, ift_counter); +void if_inc_counter(if_t, ift_counter, int64_t); + +uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); +uint64_t if_getbaudrate(const if_t ifp); +int if_setcapabilities(if_t ifp, int capabilities); +int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); +int if_getcapabilities(const if_t ifp); +int if_togglecapenable(if_t ifp, int togglecap); +int if_setcapenable(if_t ifp, int capenable); +int if_setcapenablebit(if_t ifp, int setcap, int clearcap); +int if_getcapenable(const if_t ifp); +int if_setcapabilities2(if_t ifp, int capabilities); +int if_setcapabilities2bit(if_t ifp, int setbit, int clearbit); +int if_getcapabilities2(const if_t ifp); +int if_togglecapenable2(if_t ifp, int togglecap); +int if_setcapenable2(if_t ifp, int capenable); +int if_setcapenable2bit(if_t ifp, int setcap, int clearcap); +int if_getcapenable2(const if_t ifp); +int if_getdunit(const if_t ifp); +int if_getindex(const if_t ifp); +int if_getidxgen(const if_t ifp); +const char *if_getdname(const if_t ifp); +void if_setdname(if_t ifp, const char *name); +const char *if_name(if_t ifp); +int if_setname(if_t ifp, const char *name); +int if_rename(if_t ifp, char *new_name); +const char *if_getdescr(if_t ifp); +void if_setdescr(if_t ifp, char *descrbuf); +char *if_allocdescr(size_t sz, int malloc_flag); +void if_freedescr(char *descrbuf); +void if_setlastchange(if_t ifp); +int if_getalloctype(const if_t ifp); +int if_gettype(const if_t ifp); +int if_setdev(if_t ifp, void *dev); +int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); +int if_getdrvflags(const if_t ifp); +int if_setdrvflags(if_t ifp, int flags); +int if_getlinkstate(if_t ifp); +int if_clearhwassist(if_t ifp); +int if_sethwassistbits(if_t ifp, int toset, int toclear); +int if_sethwassist(if_t ifp, int hwassist_bit); +int if_gethwassist(const if_t ifp); +int if_togglehwassist(if_t ifp, int toggle_bits); +int if_setsoftc(if_t ifp, void *softc); +void *if_getsoftc(if_t ifp); +int if_setflags(if_t ifp, int flags); +void if_setllsoftc(if_t ifp, void *softc); +void *if_getllsoftc(if_t ifp); +u_int if_getfib(if_t ifp); +uint8_t if_getaddrlen(if_t ifp); +int if_gethwaddr(const if_t ifp, struct ifreq *); +const uint8_t *if_getbroadcastaddr(const if_t ifp); +void if_setbroadcastaddr(if_t ifp, const uint8_t *); +int if_setmtu(if_t ifp, int mtu); +int if_getmtu(const if_t ifp); +int if_getmtu_family(const if_t ifp, int family); +void if_notifymtu(if_t ifp); +void if_setppromisc(const if_t ifp, bool ppromisc); +int if_setflagbits(if_t ifp, int set, int clear); +int if_setflags(if_t ifp, int flags); +int if_getflags(const if_t ifp); +int if_getnumadomain(if_t ifp); +int if_sendq_empty(if_t ifp); +int if_setsendqready(if_t ifp); +int if_setsendqlen(if_t ifp, int tx_desc_count); +int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); +int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); +int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); +u_int if_gethwtsomax(const if_t ifp); +u_int if_gethwtsomaxsegcount(const if_t ifp); +u_int if_gethwtsomaxsegsize(const if_t ifp); +void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); +struct netmap_adapter *if_getnetmapadapter(if_t ifp); +void if_input(if_t ifp, struct mbuf* sendmp); +int if_sendq_prepend(if_t ifp, struct mbuf *m); +struct mbuf *if_dequeue(if_t ifp); +int if_setifheaderlen(if_t ifp, int len); +void if_setrcvif(struct mbuf *m, if_t ifp); +void if_setvtag(struct mbuf *m, u_int16_t tag); +u_int16_t if_getvtag(struct mbuf *m); +int if_vlantrunkinuse(if_t ifp); +char *if_getlladdr(const if_t ifp); +struct vnet *if_getvnet(const if_t ifp); +void *if_gethandle(u_char); +void if_vlancap(if_t ifp); +int if_transmit(if_t ifp, struct mbuf *m); +void if_init(if_t ifp, void *ctx); +int if_ioctl(if_t ifp, u_long cmd, void *data); +int if_resolvemulti(if_t ifp, struct sockaddr **, struct sockaddr *); +uint64_t if_getcounter(if_t ifp, ift_counter counter); +struct label *if_getmaclabel(if_t ifp); +void if_setmaclabel(if_t ifp, struct label *label); +struct bpf_if *if_getbpf(if_t ifp); +uint8_t if_getpcp(if_t ifp); +void *if_getl2com(if_t ifp); +struct ifvlantrunk *if_getvlantrunk(if_t ifp); +bool if_altq_is_enabled(if_t ifp); + +void *if_getafdata(if_t ifp, int); + +int if_snd_tag_alloc(if_t ifp, union if_snd_tag_alloc_params *params, + struct m_snd_tag **mstp); +/* + * Traversing through interface address lists. + */ +struct sockaddr_dl; +typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); +u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); +u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); +u_int if_lladdr_count(if_t); +u_int if_llmaddr_count(if_t); +bool if_maddr_empty(if_t); + +struct ifaddr * if_getifaddr(const if_t ifp); +typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); +u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); + +typedef int (*if_foreach_cb_t)(if_t, void *); +typedef bool (*if_foreach_match_t)(if_t, void *); +int if_foreach(if_foreach_cb_t, void *); +int if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *); + +/* Opaque iterator structure for iterating over interfaces. */ +struct if_iter { + void *context[4]; +}; + +if_t if_iter_start(struct if_iter *); +if_t if_iter_next(struct if_iter *); +void if_iter_finish(struct if_iter *); + +struct ifa_iter { + void *context[4]; +}; + +struct ifaddr *ifa_iter_start(if_t ifp, struct ifa_iter *iter); +struct ifaddr *ifa_iter_next(struct ifa_iter *iter); +void ifa_iter_finish(struct ifa_iter *iter); + +/* Functions */ +void if_setinitfn(if_t ifp, if_init_fn_t); +void if_setinputfn(if_t ifp, if_input_fn_t); +if_input_fn_t if_getinputfn(if_t ifp); +void if_setioctlfn(if_t ifp, if_ioctl_fn_t); +void if_setoutputfn(if_t ifp, if_output_fn_t); +void if_setstartfn(if_t ifp, if_start_fn_t); +if_start_fn_t if_getstartfn(if_t ifp); +void if_settransmitfn(if_t ifp, if_transmit_fn_t); +if_transmit_fn_t if_gettransmitfn(if_t ifp); +void if_setqflushfn(if_t ifp, if_qflush_fn_t); +void if_setgetcounterfn(if_t ifp, if_get_counter_t); +void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); +void if_setdebugnet_methods(if_t, struct debugnet_methods *); +void if_setreassignfn(if_t ifp, if_reassign_fn_t); +void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); + +/* + * NB: The interface is not yet stable, drivers implementing IPSEC + * offload need to be prepared to adapt to changes. + */ +struct if_ipsec_accel_methods { + if_spdadd_fn_t if_spdadd; + if_spddel_fn_t if_spddel; + if_sa_newkey_fn_t if_sa_newkey; + if_sa_deinstall_fn_t if_sa_deinstall; + if_sa_cnt_fn_t if_sa_cnt; + if_ipsec_hwassist_fn_t if_hwassist; +}; +void if_setipsec_accel_methods(if_t ifp, const struct if_ipsec_accel_methods *); + +/* TSO */ +void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); +int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); + +/* accessors for struct ifreq */ +void *ifr_data_get_ptr(void *ifrp); +void *ifr_buffer_get_buffer(void *data); +size_t ifr_buffer_get_length(void *data); + +int ifhwioctl(u_long, if_t, caddr_t, struct thread *); + +#ifdef DEVICE_POLLING +enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; + +typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); +int ether_poll_register(poll_handler_t *h, if_t ifp); +int ether_poll_deregister(if_t ifp); +#endif /* DEVICE_POLLING */ + +#endif /* _KERNEL */ + +#include <net/ifq.h> /* XXXAO: temporary unconditional include */ + +#endif /* !_NET_IF_VAR_H_ */ |