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-rw-r--r--net/sunrpc/addr.c16
-rw-r--r--net/sunrpc/auth.c55
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c82
-rw-r--r--net/sunrpc/clnt.c5
-rw-r--r--net/sunrpc/rpc_pipe.c2
-rw-r--r--net/sunrpc/xprt.c1
-rw-r--r--net/sunrpc/xprtsock.c9
7 files changed, 124 insertions, 46 deletions
diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index a622ad64acd8..2e0a6f92e563 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -176,7 +176,7 @@ static int rpc_parse_scope_id(struct net *net, const char *buf,
len = (buf + buflen) - delim - 1;
p = kstrndup(delim + 1, len, GFP_KERNEL);
if (p) {
- unsigned long scope_id = 0;
+ u32 scope_id = 0;
struct net_device *dev;
dev = dev_get_by_name(net, p);
@@ -184,7 +184,7 @@ static int rpc_parse_scope_id(struct net *net, const char *buf,
scope_id = dev->ifindex;
dev_put(dev);
} else {
- if (strict_strtoul(p, 10, &scope_id) == 0) {
+ if (kstrtou32(p, 10, &scope_id) == 0) {
kfree(p);
return 0;
}
@@ -304,7 +304,7 @@ char *rpc_sockaddr2uaddr(const struct sockaddr *sap, gfp_t gfp_flags)
* @sap: buffer into which to plant socket address
* @salen: size of buffer
*
- * @uaddr does not have to be '\0'-terminated, but strict_strtoul() and
+ * @uaddr does not have to be '\0'-terminated, but kstrtou8() and
* rpc_pton() require proper string termination to be successful.
*
* Returns the size of the socket address if successful; otherwise
@@ -315,7 +315,7 @@ size_t rpc_uaddr2sockaddr(struct net *net, const char *uaddr,
const size_t salen)
{
char *c, buf[RPCBIND_MAXUADDRLEN + sizeof('\0')];
- unsigned long portlo, porthi;
+ u8 portlo, porthi;
unsigned short port;
if (uaddr_len > RPCBIND_MAXUADDRLEN)
@@ -327,18 +327,14 @@ size_t rpc_uaddr2sockaddr(struct net *net, const char *uaddr,
c = strrchr(buf, '.');
if (unlikely(c == NULL))
return 0;
- if (unlikely(strict_strtoul(c + 1, 10, &portlo) != 0))
- return 0;
- if (unlikely(portlo > 255))
+ if (unlikely(kstrtou8(c + 1, 10, &portlo) != 0))
return 0;
*c = '\0';
c = strrchr(buf, '.');
if (unlikely(c == NULL))
return 0;
- if (unlikely(strict_strtoul(c + 1, 10, &porthi) != 0))
- return 0;
- if (unlikely(porthi > 255))
+ if (unlikely(kstrtou8(c + 1, 10, &porthi) != 0))
return 0;
port = (unsigned short)((porthi << 8) | portlo);
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index f77366717420..360decdddc78 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -48,7 +48,7 @@ static int param_set_hashtbl_sz(const char *val, const struct kernel_param *kp)
if (!val)
goto out_inval;
- ret = strict_strtoul(val, 0, &num);
+ ret = kstrtoul(val, 0, &num);
if (ret == -EINVAL)
goto out_inval;
nbits = fls(num);
@@ -80,6 +80,10 @@ static struct kernel_param_ops param_ops_hashtbl_sz = {
module_param_named(auth_hashtable_size, auth_hashbits, hashtbl_sz, 0644);
MODULE_PARM_DESC(auth_hashtable_size, "RPC credential cache hashtable size");
+static unsigned long auth_max_cred_cachesize = ULONG_MAX;
+module_param(auth_max_cred_cachesize, ulong, 0644);
+MODULE_PARM_DESC(auth_max_cred_cachesize, "RPC credential maximum total cache size");
+
static u32
pseudoflavor_to_flavor(u32 flavor) {
if (flavor > RPC_AUTH_MAXFLAVOR)
@@ -363,6 +367,15 @@ rpcauth_cred_key_to_expire(struct rpc_cred *cred)
}
EXPORT_SYMBOL_GPL(rpcauth_cred_key_to_expire);
+char *
+rpcauth_stringify_acceptor(struct rpc_cred *cred)
+{
+ if (!cred->cr_ops->crstringify_acceptor)
+ return NULL;
+ return cred->cr_ops->crstringify_acceptor(cred);
+}
+EXPORT_SYMBOL_GPL(rpcauth_stringify_acceptor);
+
/*
* Destroy a list of credentials
*/
@@ -472,6 +485,20 @@ rpcauth_prune_expired(struct list_head *free, int nr_to_scan)
return freed;
}
+static unsigned long
+rpcauth_cache_do_shrink(int nr_to_scan)
+{
+ LIST_HEAD(free);
+ unsigned long freed;
+
+ spin_lock(&rpc_credcache_lock);
+ freed = rpcauth_prune_expired(&free, nr_to_scan);
+ spin_unlock(&rpc_credcache_lock);
+ rpcauth_destroy_credlist(&free);
+
+ return freed;
+}
+
/*
* Run memory cache shrinker.
*/
@@ -479,9 +506,6 @@ static unsigned long
rpcauth_cache_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
{
- LIST_HEAD(free);
- unsigned long freed;
-
if ((sc->gfp_mask & GFP_KERNEL) != GFP_KERNEL)
return SHRINK_STOP;
@@ -489,12 +513,7 @@ rpcauth_cache_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
if (list_empty(&cred_unused))
return SHRINK_STOP;
- spin_lock(&rpc_credcache_lock);
- freed = rpcauth_prune_expired(&free, sc->nr_to_scan);
- spin_unlock(&rpc_credcache_lock);
- rpcauth_destroy_credlist(&free);
-
- return freed;
+ return rpcauth_cache_do_shrink(sc->nr_to_scan);
}
static unsigned long
@@ -504,6 +523,21 @@ rpcauth_cache_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
return (number_cred_unused / 100) * sysctl_vfs_cache_pressure;
}
+static void
+rpcauth_cache_enforce_limit(void)
+{
+ unsigned long diff;
+ unsigned int nr_to_scan;
+
+ if (number_cred_unused <= auth_max_cred_cachesize)
+ return;
+ diff = number_cred_unused - auth_max_cred_cachesize;
+ nr_to_scan = 100;
+ if (diff < nr_to_scan)
+ nr_to_scan = diff;
+ rpcauth_cache_do_shrink(nr_to_scan);
+}
+
/*
* Look up a process' credentials in the authentication cache
*/
@@ -557,6 +591,7 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred,
} else
list_add_tail(&new->cr_lru, &free);
spin_unlock(&cache->lock);
+ rpcauth_cache_enforce_limit();
found:
if (test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags) &&
cred->cr_ops->cr_init != NULL &&
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index b6e440baccc3..73854314fb85 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -262,9 +262,22 @@ gss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct
p = ERR_PTR(ret);
goto err;
}
- dprintk("RPC: %s Success. gc_expiry %lu now %lu timeout %u\n",
- __func__, ctx->gc_expiry, now, timeout);
- return q;
+
+ /* is there any trailing data? */
+ if (q == end) {
+ p = q;
+ goto done;
+ }
+
+ /* pull in acceptor name (if there is one) */
+ p = simple_get_netobj(q, end, &ctx->gc_acceptor);
+ if (IS_ERR(p))
+ goto err;
+done:
+ dprintk("RPC: %s Success. gc_expiry %lu now %lu timeout %u acceptor %.*s\n",
+ __func__, ctx->gc_expiry, now, timeout, ctx->gc_acceptor.len,
+ ctx->gc_acceptor.data);
+ return p;
err:
dprintk("RPC: %s returns error %ld\n", __func__, -PTR_ERR(p));
return p;
@@ -1225,6 +1238,7 @@ gss_do_free_ctx(struct gss_cl_ctx *ctx)
gss_delete_sec_context(&ctx->gc_gss_ctx);
kfree(ctx->gc_wire_ctx.data);
+ kfree(ctx->gc_acceptor.data);
kfree(ctx);
}
@@ -1332,6 +1346,26 @@ gss_cred_init(struct rpc_auth *auth, struct rpc_cred *cred)
return err;
}
+static char *
+gss_stringify_acceptor(struct rpc_cred *cred)
+{
+ char *string;
+ struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base);
+ struct xdr_netobj *acceptor = &gss_cred->gc_ctx->gc_acceptor;
+
+ /* no point if there's no string */
+ if (!acceptor->len)
+ return NULL;
+
+ string = kmalloc(acceptor->len + 1, GFP_KERNEL);
+ if (!string)
+ return string;
+
+ memcpy(string, acceptor->data, acceptor->len);
+ string[acceptor->len] = '\0';
+ return string;
+}
+
/*
* Returns -EACCES if GSS context is NULL or will expire within the
* timeout (miliseconds)
@@ -1909,29 +1943,31 @@ static const struct rpc_authops authgss_ops = {
};
static const struct rpc_credops gss_credops = {
- .cr_name = "AUTH_GSS",
- .crdestroy = gss_destroy_cred,
- .cr_init = gss_cred_init,
- .crbind = rpcauth_generic_bind_cred,
- .crmatch = gss_match,
- .crmarshal = gss_marshal,
- .crrefresh = gss_refresh,
- .crvalidate = gss_validate,
- .crwrap_req = gss_wrap_req,
- .crunwrap_resp = gss_unwrap_resp,
- .crkey_timeout = gss_key_timeout,
+ .cr_name = "AUTH_GSS",
+ .crdestroy = gss_destroy_cred,
+ .cr_init = gss_cred_init,
+ .crbind = rpcauth_generic_bind_cred,
+ .crmatch = gss_match,
+ .crmarshal = gss_marshal,
+ .crrefresh = gss_refresh,
+ .crvalidate = gss_validate,
+ .crwrap_req = gss_wrap_req,
+ .crunwrap_resp = gss_unwrap_resp,
+ .crkey_timeout = gss_key_timeout,
+ .crstringify_acceptor = gss_stringify_acceptor,
};
static const struct rpc_credops gss_nullops = {
- .cr_name = "AUTH_GSS",
- .crdestroy = gss_destroy_nullcred,
- .crbind = rpcauth_generic_bind_cred,
- .crmatch = gss_match,
- .crmarshal = gss_marshal,
- .crrefresh = gss_refresh_null,
- .crvalidate = gss_validate,
- .crwrap_req = gss_wrap_req,
- .crunwrap_resp = gss_unwrap_resp,
+ .cr_name = "AUTH_GSS",
+ .crdestroy = gss_destroy_nullcred,
+ .crbind = rpcauth_generic_bind_cred,
+ .crmatch = gss_match,
+ .crmarshal = gss_marshal,
+ .crrefresh = gss_refresh_null,
+ .crvalidate = gss_validate,
+ .crwrap_req = gss_wrap_req,
+ .crunwrap_resp = gss_unwrap_resp,
+ .crstringify_acceptor = gss_stringify_acceptor,
};
static const struct rpc_pipe_ops gss_upcall_ops_v0 = {
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 2e6ab10734f6..488ddeed9363 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1746,6 +1746,7 @@ call_bind_status(struct rpc_task *task)
case -EHOSTDOWN:
case -EHOSTUNREACH:
case -ENETUNREACH:
+ case -ENOBUFS:
case -EPIPE:
dprintk("RPC: %5u remote rpcbind unreachable: %d\n",
task->tk_pid, task->tk_status);
@@ -1812,6 +1813,8 @@ call_connect_status(struct rpc_task *task)
case -ECONNABORTED:
case -ENETUNREACH:
case -EHOSTUNREACH:
+ case -ENOBUFS:
+ case -EPIPE:
if (RPC_IS_SOFTCONN(task))
break;
/* retry with existing socket, after a delay */
@@ -1918,6 +1921,7 @@ call_transmit_status(struct rpc_task *task)
case -ECONNRESET:
case -ECONNABORTED:
case -ENOTCONN:
+ case -ENOBUFS:
case -EPIPE:
rpc_task_force_reencode(task);
}
@@ -2034,6 +2038,7 @@ call_status(struct rpc_task *task)
case -ECONNRESET:
case -ECONNABORTED:
rpc_force_rebind(clnt);
+ case -ENOBUFS:
rpc_delay(task, 3*HZ);
case -EPIPE:
case -ENOTCONN:
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index b18554898562..2d12b76b5a64 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -195,7 +195,7 @@ static struct inode *
rpc_alloc_inode(struct super_block *sb)
{
struct rpc_inode *rpci;
- rpci = (struct rpc_inode *)kmem_cache_alloc(rpc_inode_cachep, GFP_KERNEL);
+ rpci = kmem_cache_alloc(rpc_inode_cachep, GFP_KERNEL);
if (!rpci)
return NULL;
return &rpci->vfs_inode;
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index c3b2b3369e52..c5b2916298b0 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -744,6 +744,7 @@ static void xprt_connect_status(struct rpc_task *task)
case -ECONNABORTED:
case -ENETUNREACH:
case -EHOSTUNREACH:
+ case -EPIPE:
case -EAGAIN:
dprintk("RPC: %5u xprt_connect_status: retrying\n", task->tk_pid);
break;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index be8bbd5d65ec..43cd89eacfab 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -594,6 +594,7 @@ static int xs_local_send_request(struct rpc_task *task)
}
switch (status) {
+ case -ENOBUFS:
case -EAGAIN:
status = xs_nospace(task);
break;
@@ -661,6 +662,7 @@ static int xs_udp_send_request(struct rpc_task *task)
dprintk("RPC: sendmsg returned unrecognized error %d\n",
-status);
case -ENETUNREACH:
+ case -ENOBUFS:
case -EPIPE:
case -ECONNREFUSED:
/* When the server has died, an ICMP port unreachable message
@@ -758,6 +760,7 @@ static int xs_tcp_send_request(struct rpc_task *task)
status = -ENOTCONN;
/* Should we call xs_close() here? */
break;
+ case -ENOBUFS:
case -EAGAIN:
status = xs_nospace(task);
break;
@@ -1946,6 +1949,7 @@ static int xs_local_setup_socket(struct sock_xprt *transport)
dprintk("RPC: xprt %p connected to %s\n",
xprt, xprt->address_strings[RPC_DISPLAY_ADDR]);
xprt_set_connected(xprt);
+ case -ENOBUFS:
break;
case -ENOENT:
dprintk("RPC: xprt %p: socket %s does not exist\n",
@@ -2281,6 +2285,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
case -ECONNREFUSED:
case -ECONNRESET:
case -ENETUNREACH:
+ case -ENOBUFS:
/* retry with existing socket, after a delay */
goto out;
}
@@ -3054,12 +3059,12 @@ static int param_set_uint_minmax(const char *val,
const struct kernel_param *kp,
unsigned int min, unsigned int max)
{
- unsigned long num;
+ unsigned int num;
int ret;
if (!val)
return -EINVAL;
- ret = strict_strtoul(val, 0, &num);
+ ret = kstrtouint(val, 0, &num);
if (ret == -EINVAL || num < min || num > max)
return -EINVAL;
*((unsigned int *)kp->arg) = num;
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