svn commit: r286616 - in head/sys: net netinet netinet6
Alexander V. Chernikov
melifaro at FreeBSD.org
Tue Aug 11 05:51:02 UTC 2015
Author: melifaro
Date: Tue Aug 11 05:51:00 2015
New Revision: 286616
URL: https://svnweb.freebsd.org/changeset/base/286616
Log:
MFP r276712.
* Split lltable_init() into lltable_allocate_htbl() (alloc
hash table with default callbacks) and lltable_link() (
links any lltable to the list).
* Switch from LLTBL_HASHTBL_SIZE to per-lltable hash size field.
* Move lltable setup to separate functions in in[6]_domifattach.
Modified:
head/sys/net/if_llatbl.c
head/sys/net/if_llatbl.h
head/sys/netinet/in.c
head/sys/netinet6/in6.c
Directory Properties:
head/sys/ (props changed)
Modified: head/sys/net/if_llatbl.c
==============================================================================
--- head/sys/net/if_llatbl.c Tue Aug 11 03:12:09 2015 (r286615)
+++ head/sys/net/if_llatbl.c Tue Aug 11 05:51:00 2015 (r286616)
@@ -70,6 +70,7 @@ static void vnet_lltable_init(void);
struct rwlock lltable_rwlock;
RW_SYSINIT(lltable_rwlock, &lltable_rwlock, "lltable_rwlock");
+static void lltable_unlink(struct lltable *llt);
static void llentries_unlink(struct lltable *llt, struct llentries *head);
static void htable_unlink_entry(struct llentry *lle);
@@ -138,7 +139,7 @@ htable_foreach_lle(struct lltable *llt,
error = 0;
- for (i = 0; i < LLTBL_HASHTBL_SIZE; i++) {
+ for (i = 0; i < llt->llt_hsize; i++) {
LIST_FOREACH_SAFE(lle, &llt->lle_head[i], lle_next, next) {
error = f(llt, lle, farg);
if (error != 0)
@@ -160,7 +161,7 @@ htable_link_entry(struct lltable *llt, s
IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp);
- hashidx = llt->llt_hash(lle, LLTBL_HASHTBL_SIZE);
+ hashidx = llt->llt_hash(lle, llt->llt_hsize);
lleh = &llt->lle_head[hashidx];
lle->lle_tbl = llt;
@@ -231,6 +232,14 @@ htable_prefix_free(struct lltable *llt,
}
static void
+htable_free_tbl(struct lltable *llt)
+{
+
+ free(llt->lle_head, M_LLTABLE);
+ free(llt, M_LLTABLE);
+}
+
+static void
llentries_unlink(struct lltable *llt, struct llentries *head)
{
struct llentry *lle, *next;
@@ -355,9 +364,7 @@ lltable_free(struct lltable *llt)
KASSERT(llt != NULL, ("%s: llt is NULL", __func__));
- LLTABLE_WLOCK();
- SLIST_REMOVE(&V_lltables, llt, lltable, llt_link);
- LLTABLE_WUNLOCK();
+ lltable_unlink(llt);
LIST_INIT(&dchain);
IF_AFDATA_WLOCK(llt->llt_ifp);
@@ -372,7 +379,7 @@ lltable_free(struct lltable *llt)
llentry_free(lle);
}
- free(llt, M_LLTABLE);
+ llt->llt_free_tbl(llt);
}
#if 0
@@ -388,7 +395,7 @@ lltable_drain(int af)
if (llt->llt_af != af)
continue;
- for (i=0; i < LLTBL_HASHTBL_SIZE; i++) {
+ for (i=0; i < llt->llt_hsize; i++) {
LIST_FOREACH(lle, &llt->lle_head[i], lle_next) {
LLE_WLOCK(lle);
if (lle->la_hold) {
@@ -419,20 +426,18 @@ lltable_prefix_free(int af, struct socka
LLTABLE_RUNLOCK();
}
-/*
- * Create a new lltable.
- */
struct lltable *
-lltable_init(struct ifnet *ifp, int af)
+lltable_allocate_htbl(uint32_t hsize)
{
struct lltable *llt;
- register int i;
+ int i;
- llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK);
+ llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK | M_ZERO);
+ llt->llt_hsize = hsize;
+ llt->lle_head = malloc(sizeof(struct llentries) * hsize,
+ M_LLTABLE, M_WAITOK | M_ZERO);
- llt->llt_af = af;
- llt->llt_ifp = ifp;
- for (i = 0; i < LLTBL_HASHTBL_SIZE; i++)
+ for (i = 0; i < llt->llt_hsize; i++)
LIST_INIT(&llt->lle_head[i]);
/* Set some default callbacks */
@@ -440,12 +445,31 @@ lltable_init(struct ifnet *ifp, int af)
llt->llt_unlink_entry = htable_unlink_entry;
llt->llt_prefix_free = htable_prefix_free;
llt->llt_foreach_entry = htable_foreach_lle;
+ llt->llt_free_tbl = htable_free_tbl;
+
+ return (llt);
+}
+
+/*
+ * Links lltable to global llt list.
+ */
+void
+lltable_link(struct lltable *llt)
+{
LLTABLE_WLOCK();
SLIST_INSERT_HEAD(&V_lltables, llt, llt_link);
LLTABLE_WUNLOCK();
+}
+
+static void
+lltable_unlink(struct lltable *llt)
+{
+
+ LLTABLE_WLOCK();
+ SLIST_REMOVE(&V_lltables, llt, lltable, llt_link);
+ LLTABLE_WUNLOCK();
- return (llt);
}
/*
@@ -685,7 +709,7 @@ llatbl_llt_show(struct lltable *llt)
db_printf("llt=%p llt_af=%d llt_ifp=%p\n",
llt, llt->llt_af, llt->llt_ifp);
- for (i = 0; i < LLTBL_HASHTBL_SIZE; i++) {
+ for (i = 0; i < llt->llt_hsize; i++) {
LIST_FOREACH(lle, &llt->lle_head[i], lle_next) {
llatbl_lle_show((struct llentry_sa *)lle);
Modified: head/sys/net/if_llatbl.h
==============================================================================
--- head/sys/net/if_llatbl.h Tue Aug 11 03:12:09 2015 (r286615)
+++ head/sys/net/if_llatbl.h Tue Aug 11 05:51:00 2015 (r286616)
@@ -138,14 +138,6 @@ struct llentry {
#define L3_ADDR(lle) ((struct sockaddr *)(&lle[1]))
#define L3_ADDR_LEN(lle) (((struct sockaddr *)(&lle[1]))->sa_len)
-#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 struct sockaddr *l3addr);
typedef struct llentry *(llt_create_t)(struct lltable *, u_int flags,
@@ -161,6 +153,7 @@ typedef int (llt_match_prefix_t)(const s
const struct sockaddr *, u_int, struct llentry *);
typedef void (llt_free_entry_t)(struct lltable *, struct llentry *);
typedef void (llt_fill_sa_entry_t)(const struct llentry *, struct sockaddr *);
+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 *);
@@ -169,8 +162,9 @@ typedef int (llt_foreach_entry_t)(struct
struct lltable {
SLIST_ENTRY(lltable) llt_link;
- struct llentries lle_head[LLTBL_HASHTBL_SIZE];
int llt_af;
+ int llt_hsize;
+ struct llentries *lle_head;
struct ifnet *llt_ifp;
llt_lookup_t *llt_lookup;
@@ -185,6 +179,7 @@ struct lltable {
llt_link_entry_t *llt_link_entry;
llt_unlink_entry_t *llt_unlink_entry;
llt_fill_sa_entry_t *llt_fill_sa_entry;
+ llt_free_tbl_t *llt_free_tbl;
};
MALLOC_DECLARE(M_LLTABLE);
@@ -204,8 +199,9 @@ MALLOC_DECLARE(M_LLTABLE);
#define LLATBL_HASH(key, mask) \
(((((((key >> 8) ^ key) >> 8) ^ key) >> 8) ^ key) & mask)
-struct lltable *lltable_init(struct ifnet *, int);
+struct lltable *lltable_allocate_htbl(uint32_t hsize);
void lltable_free(struct lltable *);
+void lltable_link(struct lltable *llt);
void lltable_prefix_free(int, struct sockaddr *,
struct sockaddr *, u_int);
#if 0
Modified: head/sys/netinet/in.c
==============================================================================
--- head/sys/netinet/in.c Tue Aug 11 03:12:09 2015 (r286615)
+++ head/sys/netinet/in.c Tue Aug 11 05:51:00 2015 (r286616)
@@ -1159,7 +1159,7 @@ in_lltable_find_dst(struct lltable *llt,
struct sockaddr_in *sin;
u_int hashidx;
- hashidx = in_lltable_hash_dst(dst, LLTBL_HASHTBL_SIZE);
+ hashidx = in_lltable_hash_dst(dst, llt->llt_hsize);
lleh = &llt->lle_head[hashidx];
LIST_FOREACH(lle, lleh, lle_next) {
sin = satosin(L3_ADDR(lle));
@@ -1342,30 +1342,39 @@ in_lltable_dump_entry(struct lltable *ll
return (error);
}
+static struct lltable *
+in_lltattach(struct ifnet *ifp)
+{
+ struct lltable *llt;
+
+ llt = lltable_allocate_htbl(IN_LLTBL_DEFAULT_HSIZE);
+ llt->llt_af = AF_INET;
+ llt->llt_ifp = ifp;
+
+ llt->llt_lookup = in_lltable_lookup;
+ llt->llt_create = in_lltable_create;
+ llt->llt_delete = in_lltable_delete;
+ llt->llt_dump_entry = in_lltable_dump_entry;
+ llt->llt_hash = in_lltable_hash;
+ llt->llt_fill_sa_entry = in_lltable_fill_sa_entry;
+ llt->llt_free_entry = in_lltable_free_entry;
+ llt->llt_match_prefix = in_lltable_match_prefix;
+ lltable_link(llt);
+
+ return (llt);
+}
+
void *
in_domifattach(struct ifnet *ifp)
{
struct in_ifinfo *ii;
- struct lltable *llt;
ii = malloc(sizeof(struct in_ifinfo), M_IFADDR, M_WAITOK|M_ZERO);
- llt = lltable_init(ifp, AF_INET);
- if (llt != NULL) {
- llt->llt_lookup = in_lltable_lookup;
- llt->llt_create = in_lltable_create;
- llt->llt_delete = in_lltable_delete;
- llt->llt_dump_entry = in_lltable_dump_entry;
- llt->llt_hash = in_lltable_hash;
- llt->llt_fill_sa_entry = in_lltable_fill_sa_entry;
- llt->llt_free_entry = in_lltable_free_entry;
- llt->llt_match_prefix = in_lltable_match_prefix;
- }
- ii->ii_llt = llt;
-
+ ii->ii_llt = in_lltattach(ifp);
ii->ii_igmp = igmp_domifattach(ifp);
- return ii;
+ return (ii);
}
void
Modified: head/sys/netinet6/in6.c
==============================================================================
--- head/sys/netinet6/in6.c Tue Aug 11 03:12:09 2015 (r286615)
+++ head/sys/netinet6/in6.c Tue Aug 11 05:51:00 2015 (r286616)
@@ -2199,7 +2199,7 @@ in6_lltable_find_dst(struct lltable *llt
const struct sockaddr_in6 *sin6;
u_int hashidx;
- hashidx = in6_lltable_hash_dst(dst, LLTBL_HASHTBL_SIZE);
+ hashidx = in6_lltable_hash_dst(dst, llt->llt_hsize);
lleh = &llt->lle_head[hashidx];
LIST_FOREACH(lle, lleh, lle_next) {
sin6 = (const struct sockaddr_in6 *)L3_CADDR(lle);
@@ -2378,6 +2378,28 @@ in6_lltable_dump_entry(struct lltable *l
return (error);
}
+static struct lltable *
+in6_lltattach(struct ifnet *ifp)
+{
+ struct lltable *llt;
+
+ llt = lltable_allocate_htbl(IN6_LLTBL_DEFAULT_HSIZE);
+ llt->llt_af = AF_INET6;
+ llt->llt_ifp = ifp;
+
+ llt->llt_lookup = in6_lltable_lookup;
+ llt->llt_create = in6_lltable_create;
+ llt->llt_delete = in6_lltable_delete;
+ llt->llt_dump_entry = in6_lltable_dump_entry;
+ llt->llt_hash = in6_lltable_hash;
+ llt->llt_fill_sa_entry = in6_lltable_fill_sa_entry;
+ llt->llt_free_entry = in6_lltable_free_entry;
+ llt->llt_match_prefix = in6_lltable_match_prefix;
+ lltable_link(llt);
+
+ return (llt);
+}
+
void *
in6_domifattach(struct ifnet *ifp)
{
@@ -2406,17 +2428,7 @@ in6_domifattach(struct ifnet *ifp)
ext->nd_ifinfo = nd6_ifattach(ifp);
ext->scope6_id = scope6_ifattach(ifp);
- ext->lltable = lltable_init(ifp, AF_INET6);
- if (ext->lltable != NULL) {
- ext->lltable->llt_lookup = in6_lltable_lookup;
- ext->lltable->llt_create = in6_lltable_create;
- ext->lltable->llt_delete = in6_lltable_delete;
- ext->lltable->llt_dump_entry = in6_lltable_dump_entry;
- ext->lltable->llt_hash = in6_lltable_hash;
- ext->lltable->llt_fill_sa_entry = in6_lltable_fill_sa_entry;
- ext->lltable->llt_free_entry = in6_lltable_free_entry;
- ext->lltable->llt_match_prefix = in6_lltable_match_prefix;
- }
+ ext->lltable = in6_lltattach(ifp);
ext->mld_ifinfo = mld_domifattach(ifp);
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