diff options
Diffstat (limited to 'fs/nfs/client.c')
| -rw-r--r-- | fs/nfs/client.c | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 701cd193a01..876162cddf1 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -34,6 +34,8 @@ #include <linux/nfs_idmap.h> #include <linux/vfs.h> #include <linux/inet.h> +#include <linux/in6.h> +#include <net/ipv6.h> #include <linux/nfs_xdr.h> #include <asm/system.h> @@ -208,16 +210,44 @@ void nfs_put_client(struct nfs_client *clp) } } +static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1, + const struct sockaddr_in *sa2) +{ + return sa1->sin_addr.s_addr == sa2->sin_addr.s_addr; +} + +static int nfs_sockaddr_match_ipaddr6(const struct sockaddr_in6 *sa1, + const struct sockaddr_in6 *sa2) +{ + return ipv6_addr_equal(&sa1->sin6_addr, &sa2->sin6_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(); +} + /* * Find a client by IP address and protocol version * - returns NULL if no such client */ -struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversion) +struct nfs_client *_nfs_find_client(const struct sockaddr *addr, int nfsversion) { struct nfs_client *clp; spin_lock(&nfs_client_lock); list_for_each_entry(clp, &nfs_client_list, cl_share_link) { + struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; + /* Don't match clients that failed to initialise properly */ if (clp->cl_cons_state != NFS_CS_READY) continue; @@ -226,8 +256,10 @@ struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversio 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 (clp->cl_addr.sin_addr.s_addr != addr->sin_addr.s_addr) + if (!nfs_sockaddr_match_ipaddr(addr, clap)) continue; atomic_inc(&clp->cl_count); @@ -238,6 +270,11 @@ struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversio return NULL; } +struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversion) +{ + return _nfs_find_client((const struct sockaddr *)addr, nfsversion); +} + /* * Find an nfs_client on the list that matches the initialisation data * that is supplied. |