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authorKa-Cheong Poon <ka-cheong.poon@oracle.com>2018-07-31 08:48:42 +0300
committerDavid S. Miller <davem@davemloft.net>2018-08-01 19:32:35 +0300
commite65d4d96334e3ff4fe0064612a93a51c63de08de (patch)
tree3bbc43d81b1e59665ceae7f412c70be52c29d89c /net/rds/connection.c
parentf394ad28feffbeebab77c8bf9a203bd49b957c9a (diff)
downloadlinux-e65d4d96334e3ff4fe0064612a93a51c63de08de.tar.xz
rds: Remove IPv6 dependency
This patch removes the IPv6 dependency from RDS. Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/connection.c')
-rw-r--r--net/rds/connection.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/net/rds/connection.c b/net/rds/connection.c
index 051e35c1e7c6..3bd2f4a5a30d 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -63,8 +63,12 @@ static struct hlist_head *rds_conn_bucket(const struct in6_addr *laddr,
net_get_random_once(&rds6_hash_secret, sizeof(rds6_hash_secret));
lhash = (__force u32)laddr->s6_addr32[3];
+#if IS_ENABLED(CONFIG_IPV6)
fhash = __ipv6_addr_jhash(faddr, rds6_hash_secret);
- hash = __inet6_ehashfn(lhash, 0, fhash, 0, rds_hash_secret);
+#else
+ fhash = (__force u32)faddr->s6_addr32[3];
+#endif
+ hash = __inet_ehashfn(lhash, 0, fhash, 0, rds_hash_secret);
return &rds_conn_hash[hash & RDS_CONNECTION_HASH_MASK];
}
@@ -201,6 +205,8 @@ static struct rds_connection *__rds_conn_create(struct net *net,
conn->c_isv6 = !ipv6_addr_v4mapped(laddr);
conn->c_faddr = *faddr;
conn->c_dev_if = dev_if;
+
+#if IS_ENABLED(CONFIG_IPV6)
/* If the local address is link local, set c_bound_if to be the
* index used for this connection. Otherwise, set it to 0 as
* the socket is not bound to an interface. c_bound_if is used
@@ -209,6 +215,7 @@ static struct rds_connection *__rds_conn_create(struct net *net,
if (ipv6_addr_type(laddr) & IPV6_ADDR_LINKLOCAL)
conn->c_bound_if = dev_if;
else
+#endif
conn->c_bound_if = 0;
rds_conn_net_set(conn, net);
@@ -500,9 +507,11 @@ static void __rds_inc_msg_cp(struct rds_incoming *inc,
struct rds_info_iterator *iter,
void *saddr, void *daddr, int flip, bool isv6)
{
+#if IS_ENABLED(CONFIG_IPV6)
if (isv6)
rds6_inc_info_copy(inc, iter, saddr, daddr, flip);
else
+#endif
rds_inc_info_copy(inc, iter, *(__be32 *)saddr,
*(__be32 *)daddr, flip);
}
@@ -581,6 +590,7 @@ static void rds_conn_message_info(struct socket *sock, unsigned int len,
rds_conn_message_info_cmn(sock, len, iter, lens, want_send, false);
}
+#if IS_ENABLED(CONFIG_IPV6)
static void rds6_conn_message_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens,
@@ -588,6 +598,7 @@ static void rds6_conn_message_info(struct socket *sock, unsigned int len,
{
rds_conn_message_info_cmn(sock, len, iter, lens, want_send, true);
}
+#endif
static void rds_conn_message_info_send(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
@@ -596,12 +607,14 @@ static void rds_conn_message_info_send(struct socket *sock, unsigned int len,
rds_conn_message_info(sock, len, iter, lens, 1);
}
+#if IS_ENABLED(CONFIG_IPV6)
static void rds6_conn_message_info_send(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens)
{
rds6_conn_message_info(sock, len, iter, lens, 1);
}
+#endif
static void rds_conn_message_info_retrans(struct socket *sock,
unsigned int len,
@@ -611,6 +624,7 @@ static void rds_conn_message_info_retrans(struct socket *sock,
rds_conn_message_info(sock, len, iter, lens, 0);
}
+#if IS_ENABLED(CONFIG_IPV6)
static void rds6_conn_message_info_retrans(struct socket *sock,
unsigned int len,
struct rds_info_iterator *iter,
@@ -618,6 +632,7 @@ static void rds6_conn_message_info_retrans(struct socket *sock,
{
rds6_conn_message_info(sock, len, iter, lens, 0);
}
+#endif
void rds_for_each_conn_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
@@ -734,6 +749,7 @@ static int rds_conn_info_visitor(struct rds_conn_path *cp, void *buffer)
return 1;
}
+#if IS_ENABLED(CONFIG_IPV6)
static int rds6_conn_info_visitor(struct rds_conn_path *cp, void *buffer)
{
struct rds6_info_connection *cinfo6 = buffer;
@@ -761,6 +777,7 @@ static int rds6_conn_info_visitor(struct rds_conn_path *cp, void *buffer)
*/
return 1;
}
+#endif
static void rds_conn_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
@@ -774,6 +791,7 @@ static void rds_conn_info(struct socket *sock, unsigned int len,
sizeof(struct rds_info_connection));
}
+#if IS_ENABLED(CONFIG_IPV6)
static void rds6_conn_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens)
@@ -785,6 +803,7 @@ static void rds6_conn_info(struct socket *sock, unsigned int len,
buffer,
sizeof(struct rds6_info_connection));
}
+#endif
int rds_conn_init(void)
{
@@ -807,12 +826,13 @@ int rds_conn_init(void)
rds_conn_message_info_send);
rds_info_register_func(RDS_INFO_RETRANS_MESSAGES,
rds_conn_message_info_retrans);
+#if IS_ENABLED(CONFIG_IPV6)
rds_info_register_func(RDS6_INFO_CONNECTIONS, rds6_conn_info);
rds_info_register_func(RDS6_INFO_SEND_MESSAGES,
rds6_conn_message_info_send);
rds_info_register_func(RDS6_INFO_RETRANS_MESSAGES,
rds6_conn_message_info_retrans);
-
+#endif
return 0;
}
@@ -830,11 +850,13 @@ void rds_conn_exit(void)
rds_conn_message_info_send);
rds_info_deregister_func(RDS_INFO_RETRANS_MESSAGES,
rds_conn_message_info_retrans);
+#if IS_ENABLED(CONFIG_IPV6)
rds_info_deregister_func(RDS6_INFO_CONNECTIONS, rds6_conn_info);
rds_info_deregister_func(RDS6_INFO_SEND_MESSAGES,
rds6_conn_message_info_send);
rds_info_deregister_func(RDS6_INFO_RETRANS_MESSAGES,
rds6_conn_message_info_retrans);
+#endif
}
/*