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[PATCH] knfsd: Use new cache code for rsc cache 

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-03-27 01:15:05 -08:00 committed by Linus Torvalds
parent d4d11ea9d6
commit 17f834b6d2
1 changed files with 64 additions and 10 deletions
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74
net/sunrpc/auth_gss/svcauth_gss.c
View File

@ -345,7 +345,8 @@ struct rsc {
static struct cache_head *rsc_table[RSC_HASHMAX];
static struct cache_detail rsc_cache;
static struct rsc *rsc_lookup(struct rsc *item, int set);
static struct rsc *rsc_update(struct rsc *new, struct rsc *old);
static struct rsc *rsc_lookup(struct rsc *item);
static void rsc_free(struct rsc *rsci)
{
@ -372,15 +373,21 @@ rsc_hash(struct rsc *rsci)
return hash_mem(rsci->handle.data, rsci->handle.len, RSC_HASHBITS);
}
static inline int
rsc_match(struct rsc *new, struct rsc *tmp)
static int
rsc_match(struct cache_head *a, struct cache_head *b)
{
struct rsc *new = container_of(a, struct rsc, h);
struct rsc *tmp = container_of(b, struct rsc, h);
return netobj_equal(&new->handle, &tmp->handle);
}
static inline void
rsc_init(struct rsc *new, struct rsc *tmp)
static void
rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
{
struct rsc *new = container_of(cnew, struct rsc, h);
struct rsc *tmp = container_of(ctmp, struct rsc, h);
new->handle.len = tmp->handle.len;
tmp->handle.len = 0;
new->handle.data = tmp->handle.data;
@ -389,9 +396,12 @@ rsc_init(struct rsc *new, struct rsc *tmp)
new->cred.cr_group_info = NULL;
}
static inline void
rsc_update(struct rsc *new, struct rsc *tmp)
static void
update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
{
struct rsc *new = container_of(cnew, struct rsc, h);
struct rsc *tmp = container_of(ctmp, struct rsc, h);
new->mechctx = tmp->mechctx;
tmp->mechctx = NULL;
memset(&new->seqdata, 0, sizeof(new->seqdata));
@ -400,6 +410,16 @@ rsc_update(struct rsc *new, struct rsc *tmp)
tmp->cred.cr_group_info = NULL;
}
static struct cache_head *
rsc_alloc(void)
{
struct rsc *rsci = kmalloc(sizeof(*rsci), GFP_KERNEL);
if (rsci)
return &rsci->h;
else
return NULL;
}
static int rsc_parse(struct cache_detail *cd,
char *mesg, int mlen)
{
@ -425,6 +445,10 @@ static int rsc_parse(struct cache_detail *cd,
if (expiry == 0)
goto out;
rscp = rsc_lookup(&rsci);
if (!rscp)
goto out;
/* uid, or NEGATIVE */
rv = get_int(&mesg, &rsci.cred.cr_uid);
if (rv == -EINVAL)
@ -480,12 +504,14 @@ static int rsc_parse(struct cache_detail *cd,
gss_mech_put(gm);
}
rsci.h.expiry_time = expiry;
rscp = rsc_lookup(&rsci, 1);
rscp = rsc_update(&rsci, rscp);
status = 0;
out:
rsc_free(&rsci);
if (rscp)
rsc_put(&rscp->h, &rsc_cache);
else
status = -ENOMEM;
return status;
}
@ -496,9 +522,37 @@ static struct cache_detail rsc_cache = {
.name = "auth.rpcsec.context",
.cache_put = rsc_put,
.cache_parse = rsc_parse,
.match = rsc_match,
.init = rsc_init,
.update = update_rsc,
.alloc = rsc_alloc,
};
static DefineSimpleCacheLookup(rsc, rsc);
static struct rsc *rsc_lookup(struct rsc *item)
{
struct cache_head *ch;
int hash = rsc_hash(item);
ch = sunrpc_cache_lookup(&rsc_cache, &item->h, hash);
if (ch)
return container_of(ch, struct rsc, h);
else
return NULL;
}
static struct rsc *rsc_update(struct rsc *new, struct rsc *old)
{
struct cache_head *ch;
int hash = rsc_hash(new);
ch = sunrpc_cache_update(&rsc_cache, &new->h,
&old->h, hash);
if (ch)
return container_of(ch, struct rsc, h);
else
return NULL;
}
static struct rsc *
gss_svc_searchbyctx(struct xdr_netobj *handle)
@ -509,7 +563,7 @@ gss_svc_searchbyctx(struct xdr_netobj *handle)
memset(&rsci, 0, sizeof(rsci));
if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
return NULL;
found = rsc_lookup(&rsci, 0);
found = rsc_lookup(&rsci);
rsc_free(&rsci);
if (!found)
return NULL;