diff options
| -rw-r--r-- | fs/nfs/client.c | 68 |
1 files changed, 39 insertions, 29 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 06654b831d1..574158ae239 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -255,6 +255,32 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, } return 0; } + +/* + * Test if two ip6 socket addresses refer to the same socket by + * comparing relevant fields. The padding bytes specifically, are not + * compared. sin6_flowinfo is not compared because it only affects QoS + * and sin6_scope_id is only compared if the address is "link local" + * because "link local" addresses need only be unique to a specific + * link. Conversely, ordinary unicast addresses might have different + * sin6_scope_id. + * + * The caller should ensure both socket addresses are AF_INET6. + */ +static int nfs_sockaddr_cmp_ip6(const struct sockaddr *sa1, + const struct sockaddr *sa2) +{ + const struct sockaddr_in6 *saddr1 = (const struct sockaddr_in6 *)sa1; + const struct sockaddr_in6 *saddr2 = (const struct sockaddr_in6 *)sa2; + + if (!ipv6_addr_equal(&saddr1->sin6_addr, + &saddr1->sin6_addr)) + return 0; + if (ipv6_addr_scope(&saddr1->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL && + saddr1->sin6_scope_id != saddr2->sin6_scope_id) + return 0; + return saddr1->sin6_port == saddr2->sin6_port; +} #else static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1, const struct sockaddr_in *sa2) @@ -270,6 +296,12 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1, (const struct sockaddr_in *)sa2); } + +static int nfs_sockaddr_cmp_ip6(const struct sockaddr * sa1, + const struct sockaddr * sa2) +{ + return 0; +} #endif /* @@ -279,38 +311,18 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, * * The caller should ensure both socket addresses are AF_INET. */ -static int nfs_sockaddr_cmp_ip4(const struct sockaddr_in * saddr1, - const struct sockaddr_in * saddr2) +static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1, + const struct sockaddr *sa2) { + const struct sockaddr_in *saddr1 = (const struct sockaddr_in *)sa1; + const struct sockaddr_in *saddr2 = (const struct sockaddr_in *)sa2; + if (saddr1->sin_addr.s_addr != saddr2->sin_addr.s_addr) return 0; return saddr1->sin_port == saddr2->sin_port; } /* - * Test if two ip6 socket addresses refer to the same socket by - * comparing relevant fields. The padding bytes specifically, are not - * compared. sin6_flowinfo is not compared because it only affects QoS - * and sin6_scope_id is only compared if the address is "link local" - * because "link local" addresses need only be unique to a specific - * link. Conversely, ordinary unicast addresses might have different - * sin6_scope_id. - * - * The caller should ensure both socket addresses are AF_INET6. - */ -static int nfs_sockaddr_cmp_ip6 (const struct sockaddr_in6 * saddr1, - const struct sockaddr_in6 * saddr2) -{ - if (!ipv6_addr_equal(&saddr1->sin6_addr, - &saddr1->sin6_addr)) - return 0; - if (ipv6_addr_scope(&saddr1->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL && - saddr1->sin6_scope_id != saddr2->sin6_scope_id) - return 0; - return saddr1->sin6_port == saddr2->sin6_port; -} - -/* * Test if two socket addresses represent the same actual socket, * by comparing (only) relevant fields. */ @@ -322,11 +334,9 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1, switch (sa1->sa_family) { case AF_INET: - return nfs_sockaddr_cmp_ip4((const struct sockaddr_in *) sa1, - (const struct sockaddr_in *) sa2); + return nfs_sockaddr_cmp_ip4(sa1, sa2); case AF_INET6: - return nfs_sockaddr_cmp_ip6((const struct sockaddr_in6 *) sa1, - (const struct sockaddr_in6 *) sa2); + return nfs_sockaddr_cmp_ip6(sa1, sa2); } return 0; } |