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authorTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-23 15:21:53 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-23 15:21:53 -0500
commit9082a5cc1e33d081f091f54e6ed69a0628a4bdcc (patch)
treefaf4be402e80546c55f721f87ea363cc4881d5a5
parentb7391f44f26b17ad25c7183a3d6ad50f0a9305ff (diff)
NFSv4: Fix up delegation callbacks
Currently, the callback server is listening on IPv6 if it is enabled. This means that IPv4 addresses will always be mapped. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--fs/nfs/client.c57
1 files changed, 38 insertions, 19 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index b643f0ec5c2..9b728f3565a 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -223,31 +223,54 @@ void nfs_put_client(struct nfs_client *clp)
}
}
-static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1,
- const struct sockaddr_in *sa2)
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static const struct in6_addr *nfs_map_ipv4_addr(const struct sockaddr *sa, struct in6_addr *addr_mapped)
{
- return sa1->sin_addr.s_addr == sa2->sin_addr.s_addr;
+ switch (sa->sa_family) {
+ default:
+ return NULL;
+ case AF_INET6:
+ return &((const struct sockaddr_in6 *)sa)->sin6_addr;
+ break;
+ case AF_INET:
+ ipv6_addr_set_v4mapped(((const struct sockaddr_in *)sa)->sin_addr.s_addr,
+ addr_mapped);
+ return addr_mapped;
+ }
}
-static int nfs_sockaddr_match_ipaddr6(const struct sockaddr_in6 *sa1,
- const struct sockaddr_in6 *sa2)
+static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
+ const struct sockaddr *sa2)
+{
+ const struct in6_addr *addr1;
+ const struct in6_addr *addr2;
+ struct in6_addr addr1_mapped;
+ struct in6_addr addr2_mapped;
+
+ addr1 = nfs_map_ipv4_addr(sa1, &addr1_mapped);
+ if (likely(addr1 != NULL)) {
+ addr2 = nfs_map_ipv4_addr(sa2, &addr2_mapped);
+ if (likely(addr2 != NULL))
+ return ipv6_addr_equal(addr1, addr2);
+ }
+ return 0;
+}
+#else
+static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1,
+ const struct sockaddr_in *sa2)
{
- return ipv6_addr_equal(&sa1->sin6_addr, &sa2->sin6_addr);
+ return sa1->sin_addr.s_addr == sa2->sin_addr.s_addr;
}
static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
const struct sockaddr *sa2)
{
- switch (sa1->sa_family) {
- case AF_INET:
- return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1,
- (const struct sockaddr_in *)sa2);
- case AF_INET6:
- return nfs_sockaddr_match_ipaddr6((const struct sockaddr_in6 *)sa1,
- (const struct sockaddr_in6 *)sa2);
- }
- BUG();
+ if (unlikely(sa1->sa_family != AF_INET || sa2->sa_family != AF_INET))
+ return 0;
+ return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1,
+ (const struct sockaddr_in *)sa2);
}
+#endif
/*
* Find a client by IP address and protocol version
@@ -269,8 +292,6 @@ struct nfs_client *nfs_find_client(const struct sockaddr *addr, u32 nfsversion)
if (clp->rpc_ops->version != nfsversion)
continue;
- if (addr->sa_family != clap->sa_family)
- continue;
/* Match only the IP address, not the port number */
if (!nfs_sockaddr_match_ipaddr(addr, clap))
continue;
@@ -304,8 +325,6 @@ struct nfs_client *nfs_find_client_next(struct nfs_client *clp)
if (clp->rpc_ops->version != nfsvers)
continue;
- if (sap->sa_family != clap->sa_family)
- continue;
/* Match only the IP address, not the port number */
if (!nfs_sockaddr_match_ipaddr(sap, clap))
continue;