Date: Tue, 29 Oct 2013 17:48:08 +0000 (UTC) From: Andre Oppermann <andre@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r257351 - head/sys/net Message-ID: <201310291748.r9THm84X065615@svn.freebsd.org>
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Author: andre Date: Tue Oct 29 17:48:08 2013 New Revision: 257351 URL: http://svnweb.freebsd.org/changeset/base/257351 Log: Move all interface queue related structures, macros and definitions from net/if_var to it own new net/ifq.h. For now net/ifq.h is unconditionally included through net/if_var.h. This is a mechanical change in preparation to make struct ifnet and the individual interface queue mechanisms opaque. Discussed with: glebius Sponsored by: The FreeBSD Foundation Added: head/sys/net/ifq.h - copied, changed from r257282, head/sys/net/if_var.h Modified: head/sys/net/if_var.h Modified: head/sys/net/if_var.h ============================================================================== --- head/sys/net/if_var.h Tue Oct 29 17:46:26 2013 (r257350) +++ head/sys/net/if_var.h Tue Oct 29 17:48:08 2013 (r257351) @@ -94,18 +94,6 @@ VNET_DECLARE(struct pfil_head, link_pfil #endif /* _KERNEL */ /* - * Structure defining a queue for a network interface. - */ -struct ifqueue { - struct mbuf *ifq_head; - struct mbuf *ifq_tail; - int ifq_len; - int ifq_maxlen; - int ifq_drops; - struct mtx ifq_mtx; -}; - -/* * Structure defining a network interface. * * (Would like to call this struct ``if'', but C isn't PL/1.) @@ -208,6 +196,8 @@ struct ifnet { void *if_pspare[8]; /* 1 netmap, 7 TDB */ }; +#include <net/ifq.h> /* XXXAO: temporary unconditional include */ + /* * XXX These aliases are terribly dangerous because they could apply * to anything. @@ -262,96 +252,6 @@ void if_addr_runlock(struct ifnet *ifp); void if_maddr_rlock(struct ifnet *ifp); /* if_multiaddrs */ void if_maddr_runlock(struct ifnet *ifp); /* if_multiaddrs */ -/* - * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) - * are queues of messages stored on ifqueue structures - * (defined above). Entries are added to and deleted from these structures - * by these macros. - */ -#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) -#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) -#define IF_LOCK_ASSERT(ifq) mtx_assert(&(ifq)->ifq_mtx, MA_OWNED) -#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) -#define _IF_DROP(ifq) ((ifq)->ifq_drops++) -#define _IF_QLEN(ifq) ((ifq)->ifq_len) - -#define _IF_ENQUEUE(ifq, m) do { \ - (m)->m_nextpkt = NULL; \ - if ((ifq)->ifq_tail == NULL) \ - (ifq)->ifq_head = m; \ - else \ - (ifq)->ifq_tail->m_nextpkt = m; \ - (ifq)->ifq_tail = m; \ - (ifq)->ifq_len++; \ -} while (0) - -#define IF_ENQUEUE(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_ENQUEUE(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define _IF_PREPEND(ifq, m) do { \ - (m)->m_nextpkt = (ifq)->ifq_head; \ - if ((ifq)->ifq_tail == NULL) \ - (ifq)->ifq_tail = (m); \ - (ifq)->ifq_head = (m); \ - (ifq)->ifq_len++; \ -} while (0) - -#define IF_PREPEND(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_PREPEND(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define _IF_DEQUEUE(ifq, m) do { \ - (m) = (ifq)->ifq_head; \ - if (m) { \ - if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ - (ifq)->ifq_tail = NULL; \ - (m)->m_nextpkt = NULL; \ - (ifq)->ifq_len--; \ - } \ -} while (0) - -#define IF_DEQUEUE(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_DEQUEUE(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define _IF_DEQUEUE_ALL(ifq, m) do { \ - (m) = (ifq)->ifq_head; \ - (ifq)->ifq_head = (ifq)->ifq_tail = NULL; \ - (ifq)->ifq_len = 0; \ -} while (0) - -#define IF_DEQUEUE_ALL(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_DEQUEUE_ALL(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define _IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) -#define IF_POLL(ifq, m) _IF_POLL(ifq, m) - -#define _IF_DRAIN(ifq) do { \ - struct mbuf *m; \ - for (;;) { \ - _IF_DEQUEUE(ifq, m); \ - if (m == NULL) \ - break; \ - m_freem(m); \ - } \ -} while (0) - -#define IF_DRAIN(ifq) do { \ - IF_LOCK(ifq); \ - _IF_DRAIN(ifq); \ - IF_UNLOCK(ifq); \ -} while(0) - #ifdef _KERNEL #ifdef _SYS_EVENTHANDLER_H_ /* interface link layer address change event */ @@ -421,172 +321,6 @@ EVENTHANDLER_DECLARE(group_change_event, #define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) #define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) -int if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, - int adjust); -#define IF_HANDOFF(ifq, m, ifp) \ - if_handoff((struct ifqueue *)ifq, m, ifp, 0) -#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) \ - if_handoff((struct ifqueue *)ifq, m, ifp, adj) - -void if_start(struct ifnet *); - -#define IFQ_ENQUEUE(ifq, m, err) \ -do { \ - IF_LOCK(ifq); \ - if (ALTQ_IS_ENABLED(ifq)) \ - ALTQ_ENQUEUE(ifq, m, NULL, err); \ - else { \ - if (_IF_QFULL(ifq)) { \ - m_freem(m); \ - (err) = ENOBUFS; \ - } else { \ - _IF_ENQUEUE(ifq, m); \ - (err) = 0; \ - } \ - } \ - if (err) \ - (ifq)->ifq_drops++; \ - IF_UNLOCK(ifq); \ -} while (0) - -#define IFQ_DEQUEUE_NOLOCK(ifq, m) \ -do { \ - if (TBR_IS_ENABLED(ifq)) \ - (m) = tbr_dequeue_ptr(ifq, ALTDQ_REMOVE); \ - else if (ALTQ_IS_ENABLED(ifq)) \ - ALTQ_DEQUEUE(ifq, m); \ - else \ - _IF_DEQUEUE(ifq, m); \ -} while (0) - -#define IFQ_DEQUEUE(ifq, m) \ -do { \ - IF_LOCK(ifq); \ - IFQ_DEQUEUE_NOLOCK(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define IFQ_POLL_NOLOCK(ifq, m) \ -do { \ - if (TBR_IS_ENABLED(ifq)) \ - (m) = tbr_dequeue_ptr(ifq, ALTDQ_POLL); \ - else if (ALTQ_IS_ENABLED(ifq)) \ - ALTQ_POLL(ifq, m); \ - else \ - _IF_POLL(ifq, m); \ -} while (0) - -#define IFQ_POLL(ifq, m) \ -do { \ - IF_LOCK(ifq); \ - IFQ_POLL_NOLOCK(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define IFQ_PURGE_NOLOCK(ifq) \ -do { \ - if (ALTQ_IS_ENABLED(ifq)) { \ - ALTQ_PURGE(ifq); \ - } else \ - _IF_DRAIN(ifq); \ -} while (0) - -#define IFQ_PURGE(ifq) \ -do { \ - IF_LOCK(ifq); \ - IFQ_PURGE_NOLOCK(ifq); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define IFQ_SET_READY(ifq) \ - do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) - -#define IFQ_LOCK(ifq) IF_LOCK(ifq) -#define IFQ_UNLOCK(ifq) IF_UNLOCK(ifq) -#define IFQ_LOCK_ASSERT(ifq) IF_LOCK_ASSERT(ifq) -#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) -#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) -#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) -#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) -#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) - -/* - * The IFF_DRV_OACTIVE test should really occur in the device driver, not in - * the handoff logic, as that flag is locked by the device driver. - */ -#define IFQ_HANDOFF_ADJ(ifp, m, adj, err) \ -do { \ - int len; \ - short mflags; \ - \ - len = (m)->m_pkthdr.len; \ - mflags = (m)->m_flags; \ - IFQ_ENQUEUE(&(ifp)->if_snd, m, err); \ - if ((err) == 0) { \ - (ifp)->if_obytes += len + (adj); \ - if (mflags & M_MCAST) \ - (ifp)->if_omcasts++; \ - if (((ifp)->if_drv_flags & IFF_DRV_OACTIVE) == 0) \ - if_start(ifp); \ - } \ -} while (0) - -#define IFQ_HANDOFF(ifp, m, err) \ - IFQ_HANDOFF_ADJ(ifp, m, 0, err) - -#define IFQ_DRV_DEQUEUE(ifq, m) \ -do { \ - (m) = (ifq)->ifq_drv_head; \ - if (m) { \ - if (((ifq)->ifq_drv_head = (m)->m_nextpkt) == NULL) \ - (ifq)->ifq_drv_tail = NULL; \ - (m)->m_nextpkt = NULL; \ - (ifq)->ifq_drv_len--; \ - } else { \ - IFQ_LOCK(ifq); \ - IFQ_DEQUEUE_NOLOCK(ifq, m); \ - while ((ifq)->ifq_drv_len < (ifq)->ifq_drv_maxlen) { \ - struct mbuf *m0; \ - IFQ_DEQUEUE_NOLOCK(ifq, m0); \ - if (m0 == NULL) \ - break; \ - m0->m_nextpkt = NULL; \ - if ((ifq)->ifq_drv_tail == NULL) \ - (ifq)->ifq_drv_head = m0; \ - else \ - (ifq)->ifq_drv_tail->m_nextpkt = m0; \ - (ifq)->ifq_drv_tail = m0; \ - (ifq)->ifq_drv_len++; \ - } \ - IFQ_UNLOCK(ifq); \ - } \ -} while (0) - -#define IFQ_DRV_PREPEND(ifq, m) \ -do { \ - (m)->m_nextpkt = (ifq)->ifq_drv_head; \ - if ((ifq)->ifq_drv_tail == NULL) \ - (ifq)->ifq_drv_tail = (m); \ - (ifq)->ifq_drv_head = (m); \ - (ifq)->ifq_drv_len++; \ -} while (0) - -#define IFQ_DRV_IS_EMPTY(ifq) \ - (((ifq)->ifq_drv_len == 0) && ((ifq)->ifq_len == 0)) - -#define IFQ_DRV_PURGE(ifq) \ -do { \ - struct mbuf *m, *n = (ifq)->ifq_drv_head; \ - while((m = n) != NULL) { \ - n = m->m_nextpkt; \ - m_freem(m); \ - } \ - (ifq)->ifq_drv_head = (ifq)->ifq_drv_tail = NULL; \ - (ifq)->ifq_drv_len = 0; \ - IFQ_PURGE(ifq); \ -} while (0) - -#ifdef _KERNEL static __inline void if_initbaudrate(struct ifnet *ifp, uintmax_t baud) { @@ -599,165 +333,6 @@ if_initbaudrate(struct ifnet *ifp, uintm ifp->if_baudrate = baud; } -static __inline int -drbr_enqueue(struct ifnet *ifp, struct buf_ring *br, struct mbuf *m) -{ - int error = 0; - -#ifdef ALTQ - if (ALTQ_IS_ENABLED(&ifp->if_snd)) { - IFQ_ENQUEUE(&ifp->if_snd, m, error); - return (error); - } -#endif - error = buf_ring_enqueue(br, m); - if (error) - m_freem(m); - - return (error); -} - -static __inline void -drbr_putback(struct ifnet *ifp, struct buf_ring *br, struct mbuf *new) -{ - /* - * The top of the list needs to be swapped - * for this one. - */ -#ifdef ALTQ - if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { - /* - * Peek in altq case dequeued it - * so put it back. - */ - IFQ_DRV_PREPEND(&ifp->if_snd, new); - return; - } -#endif - buf_ring_putback_sc(br, new); -} - -static __inline struct mbuf * -drbr_peek(struct ifnet *ifp, struct buf_ring *br) -{ -#ifdef ALTQ - struct mbuf *m; - if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { - /* - * Pull it off like a dequeue - * since drbr_advance() does nothing - * for altq and drbr_putback() will - * use the old prepend function. - */ - IFQ_DEQUEUE(&ifp->if_snd, m); - return (m); - } -#endif - return(buf_ring_peek(br)); -} - -static __inline void -drbr_flush(struct ifnet *ifp, struct buf_ring *br) -{ - struct mbuf *m; - -#ifdef ALTQ - if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) - IFQ_PURGE(&ifp->if_snd); -#endif - while ((m = buf_ring_dequeue_sc(br)) != NULL) - m_freem(m); -} - -static __inline void -drbr_free(struct buf_ring *br, struct malloc_type *type) -{ - - drbr_flush(NULL, br); - buf_ring_free(br, type); -} - -static __inline struct mbuf * -drbr_dequeue(struct ifnet *ifp, struct buf_ring *br) -{ -#ifdef ALTQ - struct mbuf *m; - - if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { - IFQ_DEQUEUE(&ifp->if_snd, m); - return (m); - } -#endif - return (buf_ring_dequeue_sc(br)); -} - -static __inline void -drbr_advance(struct ifnet *ifp, struct buf_ring *br) -{ -#ifdef ALTQ - /* Nothing to do here since peek dequeues in altq case */ - if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) - return; -#endif - return (buf_ring_advance_sc(br)); -} - - -static __inline struct mbuf * -drbr_dequeue_cond(struct ifnet *ifp, struct buf_ring *br, - int (*func) (struct mbuf *, void *), void *arg) -{ - struct mbuf *m; -#ifdef ALTQ - if (ALTQ_IS_ENABLED(&ifp->if_snd)) { - IFQ_LOCK(&ifp->if_snd); - IFQ_POLL_NOLOCK(&ifp->if_snd, m); - if (m != NULL && func(m, arg) == 0) { - IFQ_UNLOCK(&ifp->if_snd); - return (NULL); - } - IFQ_DEQUEUE_NOLOCK(&ifp->if_snd, m); - IFQ_UNLOCK(&ifp->if_snd); - return (m); - } -#endif - m = buf_ring_peek(br); - if (m == NULL || func(m, arg) == 0) - return (NULL); - - return (buf_ring_dequeue_sc(br)); -} - -static __inline int -drbr_empty(struct ifnet *ifp, struct buf_ring *br) -{ -#ifdef ALTQ - if (ALTQ_IS_ENABLED(&ifp->if_snd)) - return (IFQ_IS_EMPTY(&ifp->if_snd)); -#endif - return (buf_ring_empty(br)); -} - -static __inline int -drbr_needs_enqueue(struct ifnet *ifp, struct buf_ring *br) -{ -#ifdef ALTQ - if (ALTQ_IS_ENABLED(&ifp->if_snd)) - return (1); -#endif - return (!buf_ring_empty(br)); -} - -static __inline int -drbr_inuse(struct ifnet *ifp, struct buf_ring *br) -{ -#ifdef ALTQ - if (ALTQ_IS_ENABLED(&ifp->if_snd)) - return (ifp->if_snd.ifq_len); -#endif - return (buf_ring_count(br)); -} -#endif /* * 72 was chosen below because it is the size of a TCP/IP * header (40) + the minimum mss (32). @@ -893,8 +468,6 @@ VNET_DECLARE(int, useloopback); #define V_loif VNET(loif) #define V_useloopback VNET(useloopback) -extern int ifqmaxlen; - int if_addgroup(struct ifnet *, const char *); int if_delgroup(struct ifnet *, const char *); int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); @@ -915,7 +488,6 @@ void if_free(struct ifnet *); void if_initname(struct ifnet *, const char *, int); void if_link_state_change(struct ifnet *, int); int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); -void if_qflush(struct ifnet *); void if_ref(struct ifnet *); void if_rele(struct ifnet *); int if_setlladdr(struct ifnet *, const u_char *, int); @@ -925,9 +497,6 @@ int ifpromisc(struct ifnet *, int); struct ifnet *ifunit(const char *); struct ifnet *ifunit_ref(const char *); -void ifq_init(struct ifaltq *, struct ifnet *ifp); -void ifq_delete(struct ifaltq *); - int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); @@ -951,14 +520,6 @@ void if_deregister_com_alloc(u_char type #define IF_LLADDR(ifp) \ LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) -#ifdef DEVICE_POLLING -enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; - -typedef int poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); -int ether_poll_register(poll_handler_t *h, struct ifnet *ifp); -int ether_poll_deregister(struct ifnet *ifp); -#endif /* DEVICE_POLLING */ - #endif /* _KERNEL */ #endif /* !_NET_IF_VAR_H_ */ Copied and modified: head/sys/net/ifq.h (from r257282, head/sys/net/if_var.h) ============================================================================== --- head/sys/net/if_var.h Mon Oct 28 21:41:44 2013 (r257282, copy source) +++ head/sys/net/ifq.h Tue Oct 29 17:48:08 2013 (r257351) @@ -30,69 +30,21 @@ * $FreeBSD$ */ -#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, rt) - * 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 rt_addrinfo; /* ifa_rtrequest */ -struct socket; -struct carp_if; -struct carp_softc; -struct ifvlantrunk; -struct route; /* if_output */ -struct vnet; +#ifndef _NET_IFQ_H_ +#define _NET_IFQ_H_ #ifdef _KERNEL #include <sys/mbuf.h> /* ifqueue only? */ #include <sys/buf_ring.h> #include <net/vnet.h> #endif /* _KERNEL */ -#include <sys/counter.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 <altq/if_altq.h> -TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ -TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ -TAILQ_HEAD(ifmultihead, ifmultiaddr); -TAILQ_HEAD(ifgrouphead, ifg_group); - -#ifdef _KERNEL -VNET_DECLARE(struct pfil_head, link_pfil_hook); /* packet filter hooks */ -#define V_link_pfil_hook VNET(link_pfil_hook) -#endif /* _KERNEL */ - /* * Structure defining a queue for a network interface. */ @@ -105,163 +57,7 @@ struct ifqueue { struct mtx ifq_mtx; }; -/* - * Structure defining a network interface. - * - * (Would like to call this struct ``if'', but C isn't PL/1.) - */ - -struct ifnet { - void *if_softc; /* pointer to driver state */ - void *if_l2com; /* pointer to protocol bits */ - struct vnet *if_vnet; /* pointer to network stack instance */ - TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ - char if_xname[IFNAMSIZ]; /* external name (name + unit) */ - const char *if_dname; /* driver name */ - int if_dunit; /* unit or IF_DUNIT_NONE */ - u_int if_refcount; /* reference count */ - struct ifaddrhead if_addrhead; /* linked list of addresses per if */ - /* - * if_addrhead is the list of all addresses associated to - * an interface. - * Some code in the kernel assumes that first element - * of the list has type AF_LINK, and contains sockaddr_dl - * addresses which store the link-level address and the name - * of the interface. - * However, access to the AF_LINK address through this - * field is deprecated. Use if_addr or ifaddr_byindex() instead. - */ - int if_pcount; /* number of promiscuous listeners */ - struct carp_if *if_carp; /* carp interface structure */ - struct bpf_if *if_bpf; /* packet filter structure */ - u_short if_index; /* numeric abbreviation for this if */ - short if_index_reserved; /* spare space to grow if_index */ - struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ - int if_flags; /* up/down, broadcast, etc. */ - int if_capabilities; /* interface features & capabilities */ - int if_capenable; /* enabled features & capabilities */ - void *if_linkmib; /* link-type-specific MIB data */ - size_t if_linkmiblen; /* length of above data */ - struct if_data if_data; - struct ifmultihead if_multiaddrs; /* multicast addresses configured */ - int if_amcount; /* number of all-multicast requests */ -/* procedure handles */ - int (*if_output) /* output routine (enqueue) */ - (struct ifnet *, struct mbuf *, const struct sockaddr *, - struct route *); - void (*if_input) /* input routine (from h/w driver) */ - (struct ifnet *, struct mbuf *); - void (*if_start) /* initiate output routine */ - (struct ifnet *); - int (*if_ioctl) /* ioctl routine */ - (struct ifnet *, u_long, caddr_t); - void (*if_init) /* Init routine */ - (void *); - int (*if_resolvemulti) /* validate/resolve multicast */ - (struct ifnet *, struct sockaddr **, struct sockaddr *); - void (*if_qflush) /* flush any queues */ - (struct ifnet *); - int (*if_transmit) /* initiate output routine */ - (struct ifnet *, struct mbuf *); - void (*if_reassign) /* reassign to vnet routine */ - (struct ifnet *, struct vnet *, char *); - struct vnet *if_home_vnet; /* where this ifnet originates from */ - struct ifaddr *if_addr; /* pointer to link-level address */ - void *if_llsoftc; /* link layer softc */ - int if_drv_flags; /* driver-managed status flags */ - struct ifaltq if_snd; /* output queue (includes altq) */ - const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ - - void *if_bridge; /* bridge glue */ - - struct label *if_label; /* interface MAC label */ - - /* these are only used by IPv6 */ - void *if_unused[2]; - void *if_afdata[AF_MAX]; - int if_afdata_initialized; - struct rwlock if_afdata_lock; - struct task if_linktask; /* task for link change events */ - struct rwlock if_addr_lock; /* lock to protect address lists */ - - LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ - TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ - /* protected by if_addr_lock */ - void *if_pf_kif; - void *if_lagg; /* lagg glue */ - char *if_description; /* interface description */ - u_int if_fib; /* interface FIB */ - u_char if_alloctype; /* if_type at time of allocation */ - - u_int if_hw_tsomax; /* tso burst length limit, the minimum - * is (IP_MAXPACKET / 8). - * XXXAO: Have to find a better place - * for it eventually. */ - - /* - * Spare fields are added so that we can modify sensitive data - * structures without changing the kernel binary interface, and must - * be used with care where binary compatibility is required. - */ - char if_cspare[3]; - int if_ispare[4]; - void *if_pspare[8]; /* 1 netmap, 7 TDB */ -}; - -/* - * XXX These aliases are terribly dangerous because they could apply - * to anything. - */ -#define if_mtu if_data.ifi_mtu -#define if_type if_data.ifi_type -#define if_physical if_data.ifi_physical -#define if_addrlen if_data.ifi_addrlen -#define if_hdrlen if_data.ifi_hdrlen -#define if_metric if_data.ifi_metric -#define if_link_state if_data.ifi_link_state -#define if_baudrate if_data.ifi_baudrate -#define if_baudrate_pf if_data.ifi_baudrate_pf -#define if_hwassist if_data.ifi_hwassist -#define if_ipackets if_data.ifi_ipackets -#define if_ierrors if_data.ifi_ierrors -#define if_opackets if_data.ifi_opackets -#define if_oerrors if_data.ifi_oerrors -#define if_collisions if_data.ifi_collisions -#define if_ibytes if_data.ifi_ibytes -#define if_obytes if_data.ifi_obytes -#define if_imcasts if_data.ifi_imcasts -#define if_omcasts if_data.ifi_omcasts -#define if_iqdrops if_data.ifi_iqdrops -#define if_noproto if_data.ifi_noproto -#define if_lastchange if_data.ifi_lastchange - -/* for compatibility with other BSDs */ -#define if_addrlist if_addrhead -#define if_list if_link -#define if_name(ifp) ((ifp)->if_xname) - -/* - * Locks for address lists on the network interface. - */ -#define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock") -#define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock) -#define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock) -#define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock) -#define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock) -#define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock) -#define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED) -#define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED) - -/* - * Function variations on locking macros intended to be used by loadable - * kernel modules in order to divorce them from the internals of address list - * locking. - */ -void if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ -void if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ -void if_maddr_rlock(struct ifnet *ifp); /* if_multiaddrs */ -void if_maddr_runlock(struct ifnet *ifp); /* if_multiaddrs */ - +#ifdef _KERNEL /* * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) * are queues of messages stored on ifqueue structures @@ -352,75 +148,6 @@ void if_maddr_runlock(struct ifnet *ifp) IF_UNLOCK(ifq); \ } while(0) -#ifdef _KERNEL -#ifdef _SYS_EVENTHANDLER_H_ -/* interface link layer address change event */ -typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); -EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); -/* interface address change event */ -typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); -EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); -/* new interface arrival event */ -typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); -EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); -/* interface departure event */ -typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); -EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); -/* Interface link state change event */ -typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); -EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); -#endif /* _SYS_EVENTHANDLER_H_ */ - -/* - * interface groups - */ -struct ifg_group { - char ifg_group[IFNAMSIZ]; - u_int ifg_refcnt; - void *ifg_pf_kif; - TAILQ_HEAD(, ifg_member) ifg_members; - TAILQ_ENTRY(ifg_group) ifg_next; -}; - -struct ifg_member { - TAILQ_ENTRY(ifg_member) ifgm_next; - struct ifnet *ifgm_ifp; -}; - -struct ifg_list { - struct ifg_group *ifgl_group; - TAILQ_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_ */ - -#define IF_AFDATA_LOCK_INIT(ifp) \ - rw_init(&(ifp)->if_afdata_lock, "if_afdata") - -#define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) -#define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) -#define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) -#define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) -#define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) -#define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) -#define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) -#define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) - -#define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) -#define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) -#define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) -#define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) - int if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust); #define IF_HANDOFF(ifq, m, ifp) \ @@ -586,19 +313,6 @@ do { \ IFQ_PURGE(ifq); \ } while (0) -#ifdef _KERNEL -static __inline void -if_initbaudrate(struct ifnet *ifp, uintmax_t baud) -{ - - ifp->if_baudrate_pf = 0; - while (baud > (u_long)(~0UL)) { - baud /= 10; - ifp->if_baudrate_pf++; - } - ifp->if_baudrate = baud; -} - static __inline int drbr_enqueue(struct ifnet *ifp, struct buf_ring *br, struct mbuf *m) { @@ -757,200 +471,13 @@ drbr_inuse(struct ifnet *ifp, struct buf #endif return (buf_ring_count(br)); } -#endif -/* - * 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) ((ifp)->if_llsoftc) - -#endif /* _KERNEL */ - -/* - * 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. - */ -#if defined(_KERNEL) || defined(_WANT_IFADDR) -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 */ - struct ifnet *ifa_ifp; /* back-pointer to interface */ - struct carp_softc *ifa_carp; /* pointer to CARP data */ - TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ - void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ - (int, struct rtentry *, struct rt_addrinfo *); - u_short ifa_flags; /* mostly rt_flags for cloning */ - u_int ifa_refcnt; /* references to this structure */ - int ifa_metric; /* cost of going out this interface */ - int (*ifa_claim_addr) /* check if an addr goes to this if */ - (struct ifaddr *, struct sockaddr *); - - counter_u64_t ifa_ipackets; - counter_u64_t ifa_opackets; - counter_u64_t ifa_ibytes; - counter_u64_t ifa_obytes; -}; -#endif - -#ifdef _KERNEL -#define IFA_ROUTE RTF_UP /* route installed */ -#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ - -/* For compatibility with other BSDs. SCTP uses it. */ -#define ifa_list ifa_link - -struct ifaddr * ifa_alloc(size_t size, int flags); -void ifa_free(struct ifaddr *ifa); -void ifa_ref(struct ifaddr *ifa); -#endif /* _KERNEL */ - -/* - * Multicast address structure. This is analogous to the ifaddr - * structure except that it keeps track of multicast addresses. - */ -struct ifmultiaddr { - TAILQ_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 */ - struct ifnet *ifma_ifp; /* back-pointer to interface */ - u_int ifma_refcount; /* reference count */ - void *ifma_protospec; /* protocol-specific state, if any */ - struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ -}; - -#ifdef _KERNEL - -extern struct rwlock ifnet_rwlock; -extern struct sx ifnet_sxlock; - -#define IFNET_LOCK_INIT() do { \ - rw_init_flags(&ifnet_rwlock, "ifnet_rw", RW_RECURSE); \ - sx_init_flags(&ifnet_sxlock, "ifnet_sx", SX_RECURSE); \ -} while(0) - -#define IFNET_WLOCK() do { \ - sx_xlock(&ifnet_sxlock); \ - rw_wlock(&ifnet_rwlock); \ -} while (0) - -#define IFNET_WUNLOCK() do { \ - rw_wunlock(&ifnet_rwlock); \ - sx_xunlock(&ifnet_sxlock); \ -} while (0) - -/* - * To assert the ifnet lock, you must know not only whether it's for read or - * write, but also whether it was acquired with sleep support or not. - */ -#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) -#define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) -#define IFNET_WLOCK_ASSERT() do { \ - sx_assert(&ifnet_sxlock, SA_XLOCKED); \ - rw_assert(&ifnet_rwlock, RA_WLOCKED); \ -} while (0) - -#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) -#define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) -#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) -#define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) - -/* - * Look up an ifnet given its index; the _ref variant also acquires a - * reference that must be freed using if_rele(). It is almost always a bug - * to call ifnet_byindex() instead if ifnet_byindex_ref(). - */ -struct ifnet *ifnet_byindex(u_short idx); -struct ifnet *ifnet_byindex_locked(u_short idx); -struct ifnet *ifnet_byindex_ref(u_short idx); - -/* - * Given the index, ifaddr_byindex() returns the one and only - * link-level ifaddr for the interface. You are not supposed to use - * it to traverse the list of addresses associated to the interface. - */ -struct ifaddr *ifaddr_byindex(u_short idx); - -VNET_DECLARE(struct ifnethead, ifnet); -VNET_DECLARE(struct ifgrouphead, ifg_head); -VNET_DECLARE(int, if_index); -VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ -VNET_DECLARE(int, useloopback); - -#define V_ifnet VNET(ifnet) -#define V_ifg_head VNET(ifg_head) -#define V_if_index VNET(if_index) -#define V_loif VNET(loif) -#define V_useloopback VNET(useloopback) extern int ifqmaxlen; -int if_addgroup(struct ifnet *, const char *); -int if_delgroup(struct ifnet *, const char *); -int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); -int if_allmulti(struct ifnet *, int); -struct ifnet* if_alloc(u_char); -void if_attach(struct ifnet *); -void if_dead(struct ifnet *); -int if_delmulti(struct ifnet *, struct sockaddr *); -void if_delmulti_ifma(struct ifmultiaddr *); -void if_detach(struct ifnet *); -void if_vmove(struct ifnet *, struct vnet *); -void if_purgeaddrs(struct ifnet *); -void if_delallmulti(struct ifnet *); -void if_down(struct ifnet *); -struct ifmultiaddr * *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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