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* Hide lltable implementation details in if_llatbl_var.h

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* Make most of lltable_* methods 'normal' functions instead of inline
* Add lltable_get_<af|ifp>() functions to access given lltable fields
* Temporarily resurrect nd6_lookup() function
This commit is contained in:
Alexander V. Chernikov 2015-01-03 16:04:28 +00:00
parent 787cea14a5
commit 20dd899505
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/routing/; revision=276624
10 changed files with 219 additions and 143 deletions
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59
sys/net/if_llatbl.c
View File

@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/in.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_var.h>
@ -432,6 +433,64 @@ lltable_unlink(struct lltable *llt)
}
/*
* External methods used by lltable consumers
*/
struct llentry *
lltable_create_lle(struct lltable *llt, u_int flags,
const void *paddr)
{
return (llt->llt_create(llt, flags, paddr));
}
int
lltable_delete_addr(struct lltable *llt, u_int flags,
const struct sockaddr *l3addr)
{
return llt->llt_delete_addr(llt, flags, l3addr);
}
void
lltable_link_entry(struct lltable *llt, struct llentry *lle)
{
llt->llt_link_entry(llt, lle);
}
void
lltable_unlink_entry(struct lltable *llt, struct llentry *lle)
{
llt->llt_unlink_entry(lle);
}
void
lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa)
{
struct lltable *llt;
llt = lle->lle_tbl;
llt->llt_fill_sa_entry(lle, sa);
}
struct ifnet *
lltable_get_ifp(const struct lltable *llt)
{
return (llt->llt_ifp);
}
int
lltable_get_af(const struct lltable *llt)
{
return (llt->llt_af);
}
/*
* Called in route_output when rtm_flags contains RTF_LLDATA.
*/

157
sys/net/if_llatbl.h
View File

@ -24,7 +24,6 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef _NET_IF_LLATBL_H_
@ -34,20 +33,9 @@ __FBSDID("$FreeBSD$");
#include <netinet/in.h>
struct ifnet;
struct sysctl_req;
struct rt_msghdr;
struct rt_addrinfo;
struct llentry;
LIST_HEAD(llentries, llentry);
extern struct rwlock lltable_rwlock;
#define LLTABLE_RLOCK() rw_rlock(&lltable_rwlock)
#define LLTABLE_RUNLOCK() rw_runlock(&lltable_rwlock)
#define LLTABLE_WLOCK() rw_wlock(&lltable_rwlock)
#define LLTABLE_WUNLOCK() rw_wunlock(&lltable_rwlock)
#define LLTABLE_LOCK_ASSERT() rw_assert(&lltable_rwlock, RA_LOCKED)
struct llentry {
/* FIELDS PROTECTED BY IFDATA LOCK */
LIST_ENTRY(llentry) lle_next;
@ -88,7 +76,6 @@ struct llentry {
struct callout ln_timer_ch;
struct callout la_timer;
} lle_timer;
/* NB: struct sockaddr must immediately follow */
};
#define LLE_WLOCK(lle) rw_wlock(&(lle)->lle_lock)
@ -135,62 +122,6 @@ struct llentry {
#define ln_timer_ch lle_timer.ln_timer_ch
#define la_timer lle_timer.la_timer
#ifndef LLTBL_HASHTBL_SIZE
#define LLTBL_HASHTBL_SIZE 32 /* default 32 ? */
#endif
#ifndef LLTBL_HASHMASK
#define LLTBL_HASHMASK (LLTBL_HASHTBL_SIZE - 1)
#endif
typedef struct llentry *(llt_lookup_t)(struct lltable *, u_int flags,
const void *paddr);
typedef struct llentry *(llt_create_t)(struct lltable *, u_int flags,
const void *paddr);
typedef int (llt_delete_addr_t)(struct lltable *, u_int flags,
const struct sockaddr *l3addr);
typedef int (llt_dump_entry_t)(struct lltable *, struct llentry *,
struct sysctl_req *);
typedef uint32_t (llt_hash_t)(const struct llentry *);
typedef int (llt_match_prefix_t)(const struct sockaddr *,
const struct sockaddr *, u_int, struct llentry *);
typedef void (llt_clear_entry_t)(struct lltable *, struct llentry *);
typedef void (llt_free_tbl_t)(struct lltable *);
typedef void (llt_link_entry_t)(struct lltable *, struct llentry *);
typedef void (llt_unlink_entry_t)(struct llentry *);
typedef int (llt_prepare_sentry_t)(struct lltable *, struct llentry *,
struct rt_addrinfo *);
typedef const void *(llt_get_sa_addr_t)(const struct sockaddr *l3addr);
typedef void (llt_fill_sa_entry_t)(const struct llentry *, struct sockaddr *);
typedef int (llt_foreach_cb_t)(struct lltable *, struct llentry *, void *);
typedef int (llt_foreach_entry_t)(struct lltable *, llt_foreach_cb_t *, void *);
struct lltable {
SLIST_ENTRY(lltable) llt_link;
struct llentries lle_head[LLTBL_HASHTBL_SIZE];
int llt_af;
struct ifnet *llt_ifp;
llt_lookup_t *llt_lookup;
llt_create_t *llt_create;
llt_delete_addr_t *llt_delete_addr;
llt_dump_entry_t *llt_dump_entry;
llt_hash_t *llt_hash;
llt_match_prefix_t *llt_match_prefix;
llt_clear_entry_t *llt_clear_entry;
llt_foreach_entry_t *llt_foreach_entry;
llt_link_entry_t *llt_link_entry;
llt_unlink_entry_t *llt_unlink_entry;
llt_prepare_sentry_t *llt_prepare_static_entry;
llt_get_sa_addr_t *llt_get_sa_addr;
llt_fill_sa_entry_t *llt_fill_sa_entry;
llt_free_tbl_t *llt_free_tbl;
};
MALLOC_DECLARE(M_LLTABLE);
/*
* LLE flags used by fast path code
*/
@ -210,77 +141,6 @@ MALLOC_DECLARE(M_LLTABLE);
#define LLE_UNLOCKED 0x0100 /* return lle unlocked */
#define LLE_EXCLUSIVE 0x0200 /* return lle wlocked */
#define LLATBL_HASH(key, mask) \
(((((((key >> 8) ^ key) >> 8) ^ key) >> 8) ^ key) & mask)
void lltable_link(struct lltable *);
void lltable_free(struct lltable *);
void lltable_prefix_free(int, struct sockaddr *,
struct sockaddr *, u_int);
#if 0
void lltable_drain(int);
#endif
int lltable_sysctl_dumparp(int, struct sysctl_req *);
struct llentry *llentry_alloc(struct ifnet *, struct lltable *,
struct sockaddr_storage *);
/* helper functions */
size_t lltable_drop_entry_queue(struct llentry *);
/*
* Generic link layer address lookup function.
*/
static __inline struct llentry *
lltable_lookup_lle(struct lltable *llt, u_int flags,
const void *paddr)
{
return (llt->llt_lookup(llt, flags, paddr));
}
static __inline struct llentry *
lltable_create_lle(struct lltable *llt, u_int flags,
const void *paddr)
{
return (llt->llt_create(llt, flags, paddr));
}
static __inline int
lltable_delete_addr(struct lltable *llt, u_int flags,
const struct sockaddr *l3addr)
{
return llt->llt_delete_addr(llt, flags, l3addr);
}
static __inline void
lltable_link_entry(struct lltable *llt, struct llentry *lle)
{
llt->llt_link_entry(llt, lle);
}
static __inline void
lltable_unlink_entry(struct lltable *llt, struct llentry *lle)
{
llt->llt_unlink_entry(lle);
}
static __inline void
lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa)
{
struct lltable *llt;
llt = lle->lle_tbl;
llt->llt_fill_sa_entry(lle, sa);
}
int lla_rt_output(struct rt_msghdr *, struct rt_addrinfo *);
#include <sys/eventhandler.h>
enum {
LLENTRY_RESOLVED,
@ -290,4 +150,21 @@ enum {
};
typedef void (*lle_event_fn)(void *, struct llentry *, int);
EVENTHANDLER_DECLARE(lle_event, lle_event_fn);
struct sysctl_req;
struct rt_msghdr;
struct rt_addrinfo;
int lltable_sysctl_dumparp(int af, struct sysctl_req *wr);
int lla_rt_output(struct rt_msghdr *, struct rt_addrinfo *);
void lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa);
void lltable_prefix_free(int af, struct sockaddr *prefix, struct sockaddr *mask,
u_int flags);
struct ifnet *lltable_get_ifp(const struct lltable *llt);
int lltable_get_af(const struct lltable *llt);
/* XXX: Remove after converting flowtable */
struct llentry *llentry_alloc(struct ifnet *ifp, struct lltable *lt,
struct sockaddr_storage *dst);
#endif /* _NET_IF_LLATBL_H_ */

123
sys/net/if_llatbl_var.h Normal file
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@ -0,0 +1,123 @@
/*
* Copyright (c) 2014 Alexander V. Chernikov. 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.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
*/
__FBSDID("$FreeBSD$");
#ifndef _NET_IF_LLATBL_VAR_H_
#define _NET_IF_LLATBL_VAR_H_
extern struct rwlock lltable_rwlock;
#define LLTABLE_RLOCK() rw_rlock(&lltable_rwlock)
#define LLTABLE_RUNLOCK() rw_runlock(&lltable_rwlock)
#define LLTABLE_WLOCK() rw_wlock(&lltable_rwlock)
#define LLTABLE_WUNLOCK() rw_wunlock(&lltable_rwlock)
#define LLTABLE_LOCK_ASSERT() rw_assert(&lltable_rwlock, RA_LOCKED)
#ifndef LLTBL_HASHTBL_SIZE
#define LLTBL_HASHTBL_SIZE 32 /* default 32 ? */
#endif
#ifndef LLTBL_HASHMASK
#define LLTBL_HASHMASK (LLTBL_HASHTBL_SIZE - 1)
#endif
#define LLATBL_HASH(key, mask) \
(((((((key >> 8) ^ key) >> 8) ^ key) >> 8) ^ key) & mask)
typedef struct llentry *(llt_lookup_t)(struct lltable *, u_int flags,
const void *paddr);
typedef struct llentry *(llt_create_t)(struct lltable *, u_int flags,
const void *paddr);
typedef int (llt_delete_addr_t)(struct lltable *, u_int flags,
const struct sockaddr *l3addr);
typedef int (llt_dump_entry_t)(struct lltable *, struct llentry *,
struct sysctl_req *);
typedef uint32_t (llt_hash_t)(const struct llentry *);
typedef int (llt_match_prefix_t)(const struct sockaddr *,
const struct sockaddr *, u_int, struct llentry *);
typedef void (llt_clear_entry_t)(struct lltable *, struct llentry *);
typedef void (llt_free_tbl_t)(struct lltable *);
typedef void (llt_link_entry_t)(struct lltable *, struct llentry *);
typedef void (llt_unlink_entry_t)(struct llentry *);
typedef int (llt_prepare_sentry_t)(struct lltable *, struct llentry *,
struct rt_addrinfo *);
typedef const void *(llt_get_sa_addr_t)(const struct sockaddr *l3addr);
typedef void (llt_fill_sa_entry_t)(const struct llentry *, struct sockaddr *);
typedef int (llt_foreach_cb_t)(struct lltable *, struct llentry *, void *);
typedef int (llt_foreach_entry_t)(struct lltable *, llt_foreach_cb_t *, void *);
struct lltable {
SLIST_ENTRY(lltable) llt_link;
struct llentries lle_head[LLTBL_HASHTBL_SIZE];
int llt_af;
struct ifnet *llt_ifp;
llt_lookup_t *llt_lookup;
llt_create_t *llt_create;
llt_delete_addr_t *llt_delete_addr;
llt_dump_entry_t *llt_dump_entry;
llt_hash_t *llt_hash;
llt_match_prefix_t *llt_match_prefix;
llt_clear_entry_t *llt_clear_entry;
llt_foreach_entry_t *llt_foreach_entry;
llt_link_entry_t *llt_link_entry;
llt_unlink_entry_t *llt_unlink_entry;
llt_prepare_sentry_t *llt_prepare_static_entry;
llt_get_sa_addr_t *llt_get_sa_addr;
llt_fill_sa_entry_t *llt_fill_sa_entry;
llt_free_tbl_t *llt_free_tbl;
};
MALLOC_DECLARE(M_LLTABLE);
void lltable_link(struct lltable *llt);
void lltable_free(struct lltable *llt);
/* helper functions */
size_t lltable_drop_entry_queue(struct llentry *);
/*
* Generic link layer table methods.
*/
static __inline struct llentry *
lltable_lookup_lle(struct lltable *llt, u_int flags,
const void *paddr)
{
return (llt->llt_lookup(llt, flags, paddr));
}
struct llentry *lltable_create_lle(struct lltable *llt, u_int flags,
const void *paddr);
int lltable_delete_addr(struct lltable *llt, u_int flags,
const struct sockaddr *l3addr);
void lltable_link_entry(struct lltable *llt, struct llentry *lle);
void lltable_unlink_entry(struct lltable *llt, struct llentry *lle);
#endif

1
sys/net/rt_nhops.c
View File

@ -74,6 +74,7 @@
#include <netinet6/scope6_var.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <net/if_types.h>
#include <netinet/if_ether.h>

1
sys/netinet/if_ether.c
View File

@ -66,6 +66,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <netinet/if_ether.h>
#ifdef INET
#include <netinet/ip_carp.h>

1
sys/netinet/in.c
View File

@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$");
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/vnet.h>

5
sys/netinet/toecore.c
View File

@ -49,6 +49,7 @@ __FBSDID("$FreeBSD$");
#include <net/if_types.h>
#include <net/if_vlan_var.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <net/route.h>
#include <netinet/if_ether.h>
@ -397,8 +398,8 @@ toe_lle_event(void *arg __unused, struct llentry *lle, int evt)
LLE_WLOCK_ASSERT(lle);
ifp = lle->lle_tbl->llt_ifp;
sa_family = lle->lle_tbl->llt_af;
ifp = lltable_get_ifp(lle->lle_tbl);
sa_family = lltable_get_af(lle->lle_tbl);
#if 0
/* XXX: Do not panic, ignore event instead */

1
sys/netinet6/in6.c
View File

@ -95,6 +95,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>

10
sys/netinet6/nd6.c
View File

@ -68,6 +68,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/in.h>
#include <netinet/in_kdtrace.h>
#include <net/if_llatbl.h>
#include <net/if_llatbl_var.h>
#include <netinet/if_ether.h>
#include <netinet6/in6_var.h>
#include <netinet/ip6.h>
@ -815,6 +816,15 @@ regen_tmpaddr(struct in6_ifaddr *ia6)
return (-1);
}
struct llentry *
nd6_lookup(struct in6_addr *addr, u_int flags, struct ifnet *ifp)
{
return (lltable_lookup_lle(LLTABLE6(ifp), flags, addr));
}
/*
* Nuke neighbor cache/prefix/default router management table, right before
* ifp goes away.

4
sys/netinet6/nd6.h
View File

@ -403,7 +403,9 @@ _check_in6_addr_typecast(const struct in6_addr *paddr)
#define lltable_create_lle6(i, f, a) \
lltable_create_lle(LLTABLE6(i), (f), _check_in6_addr_typecast(a))
#define nd6_lookup(a, f, i) lltable_lookup_lle6((i), (f), (a))
struct llentry *nd6_lookup(struct in6_addr *addr, u_int flags,
struct ifnet *ifp);
#define ND6_EXCLUSIVE LLE_EXCLUSIVE