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Message-Id: <1533016122-12654-2-git-send-email-ka-cheong.poon@oracle.com>
Date: Mon, 30 Jul 2018 22:48:42 -0700
From: Ka-Cheong Poon <ka-cheong.poon@...cle.com>
To: netdev@...r.kernel.org
Cc: santosh.shilimkar@...cle.com, davem@...emloft.net,
rds-devel@....oracle.com
Subject: [PATCH net-next 2/2] rds: Remove IPv6 dependency
This patch removes the IPv6 dependency from RDS.
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@...cle.com>
---
net/rds/Kconfig | 2 +-
net/rds/af_rds.c | 32 +++++++++++++++++++-------------
net/rds/bind.c | 4 +++-
net/rds/connection.c | 26 ++++++++++++++++++++++++--
net/rds/ib.c | 31 ++++++++++++++++++++++++++-----
net/rds/ib_cm.c | 9 +++++++++
net/rds/ib_rdma.c | 2 ++
net/rds/rdma_transport.c | 10 ++++++++++
net/rds/recv.c | 2 ++
net/rds/send.c | 2 ++
net/rds/tcp.c | 25 +++++++++++++++++++++++++
net/rds/tcp_listen.c | 21 +++++++++++++++++----
12 files changed, 140 insertions(+), 26 deletions(-)
diff --git a/net/rds/Kconfig b/net/rds/Kconfig
index 4c7f259..41f7556 100644
--- a/net/rds/Kconfig
+++ b/net/rds/Kconfig
@@ -1,7 +1,7 @@
config RDS
tristate "The RDS Protocol"
- depends on INET && IPV6
+ depends on INET
---help---
The RDS (Reliable Datagram Sockets) protocol provides reliable,
sequenced delivery of datagrams over Infiniband or TCP.
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index fc5c48b..65387e1 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -156,18 +156,20 @@ static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
return sizeof(*sin);
}
- if (ipv6_addr_type(&rs->rs_conn_addr) &
- IPV6_ADDR_MAPPED) {
- sin = (struct sockaddr_in *)uaddr;
- memset(sin, 0, sizeof(*sin));
- sin->sin_family = AF_INET;
- return sizeof(*sin);
+#if IS_ENABLED(CONFIG_IPV6)
+ if (!(ipv6_addr_type(&rs->rs_conn_addr) &
+ IPV6_ADDR_MAPPED)) {
+ sin6 = (struct sockaddr_in6 *)uaddr;
+ memset(sin6, 0, sizeof(*sin6));
+ sin6->sin6_family = AF_INET6;
+ return sizeof(*sin6);
}
+#endif
- sin6 = (struct sockaddr_in6 *)uaddr;
- memset(sin6, 0, sizeof(*sin6));
- sin6->sin6_family = AF_INET6;
- return sizeof(*sin6);
+ sin = (struct sockaddr_in *)uaddr;
+ memset(sin, 0, sizeof(*sin));
+ sin->sin_family = AF_INET;
+ return sizeof(*sin);
}
if (ipv6_addr_v4mapped(&rs->rs_bound_addr)) {
sin = (struct sockaddr_in *)uaddr;
@@ -501,9 +503,7 @@ static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
{
struct sock *sk = sock->sk;
struct sockaddr_in *sin;
- struct sockaddr_in6 *sin6;
struct rds_sock *rs = rds_sk_to_rs(sk);
- int addr_type;
int ret = 0;
lock_sock(sk);
@@ -528,7 +528,11 @@ static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
rs->rs_conn_port = sin->sin_port;
break;
- case AF_INET6:
+#if IS_ENABLED(CONFIG_IPV6)
+ case AF_INET6: {
+ struct sockaddr_in6 *sin6;
+ int addr_type;
+
sin6 = (struct sockaddr_in6 *)uaddr;
if (addr_len < sizeof(struct sockaddr_in6)) {
ret = -EINVAL;
@@ -575,6 +579,8 @@ static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
rs->rs_conn_addr = sin6->sin6_addr;
rs->rs_conn_port = sin6->sin6_port;
break;
+ }
+#endif
default:
ret = -EAFNOSUPPORT;
diff --git a/net/rds/bind.c b/net/rds/bind.c
index ba77876..3ab5578 100644
--- a/net/rds/bind.c
+++ b/net/rds/bind.c
@@ -165,7 +165,6 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct in6_addr v6addr, *binding_addr;
struct rds_transport *trans;
__u32 scope_id = 0;
- int addr_type;
int ret = 0;
__be16 port;
@@ -183,8 +182,10 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &v6addr);
binding_addr = &v6addr;
port = sin->sin_port;
+#if IS_ENABLED(CONFIG_IPV6)
} else if (uaddr->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)uaddr;
+ int addr_type;
if (addr_len < sizeof(struct sockaddr_in6))
return -EINVAL;
@@ -212,6 +213,7 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
}
binding_addr = &sin6->sin6_addr;
port = sin6->sin6_port;
+#endif
} else {
return -EINVAL;
}
diff --git a/net/rds/connection.c b/net/rds/connection.c
index 051e35c..3bd2f4a 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
}
/*
diff --git a/net/rds/ib.c b/net/rds/ib.c
index a4245c4..89c6333 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -321,6 +321,7 @@ static int rds_ib_conn_info_visitor(struct rds_connection *conn,
return 1;
}
+#if IS_ENABLED(CONFIG_IPV6)
/* IPv6 version of rds_ib_conn_info_visitor(). */
static int rds6_ib_conn_info_visitor(struct rds_connection *conn,
void *buffer)
@@ -357,6 +358,7 @@ static int rds6_ib_conn_info_visitor(struct rds_connection *conn,
}
return 1;
}
+#endif
static void rds_ib_ic_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
@@ -370,6 +372,7 @@ static void rds_ib_ic_info(struct socket *sock, unsigned int len,
sizeof(struct rds_info_rdma_connection));
}
+#if IS_ENABLED(CONFIG_IPV6)
/* IPv6 version of rds_ib_ic_info(). */
static void rds6_ib_ic_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
@@ -382,6 +385,7 @@ static void rds6_ib_ic_info(struct socket *sock, unsigned int len,
buffer,
sizeof(struct rds6_info_rdma_connection));
}
+#endif
/*
* Early RDS/IB was built to only bind to an address if there is an IPoIB
@@ -398,7 +402,9 @@ static int rds_ib_laddr_check(struct net *net, const struct in6_addr *addr,
{
int ret;
struct rdma_cm_id *cm_id;
+#if IS_ENABLED(CONFIG_IPV6)
struct sockaddr_in6 sin6;
+#endif
struct sockaddr_in sin;
struct sockaddr *sa;
bool isv4;
@@ -418,6 +424,7 @@ static int rds_ib_laddr_check(struct net *net, const struct in6_addr *addr,
sin.sin_addr.s_addr = addr->s6_addr32[3];
sa = (struct sockaddr *)&sin;
} else {
+#if IS_ENABLED(CONFIG_IPV6)
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_addr = *addr;
@@ -432,21 +439,30 @@ static int rds_ib_laddr_check(struct net *net, const struct in6_addr *addr,
if (ipv6_addr_type(addr) & IPV6_ADDR_LINKLOCAL) {
struct net_device *dev;
- if (scope_id == 0)
- return -EADDRNOTAVAIL;
+ if (scope_id == 0) {
+ ret = -EADDRNOTAVAIL;
+ goto out;
+ }
/* Use init_net for now as RDS is not network
* name space aware.
*/
dev = dev_get_by_index(&init_net, scope_id);
- if (!dev)
- return -EADDRNOTAVAIL;
+ if (!dev) {
+ ret = -EADDRNOTAVAIL;
+ goto out;
+ }
if (!ipv6_chk_addr(&init_net, addr, dev, 1)) {
dev_put(dev);
- return -EADDRNOTAVAIL;
+ ret = -EADDRNOTAVAIL;
+ goto out;
}
dev_put(dev);
}
+#else
+ ret = -EADDRNOTAVAIL;
+ goto out;
+#endif
}
/* rdma_bind_addr will only succeed for IB & iWARP devices */
@@ -461,6 +477,7 @@ static int rds_ib_laddr_check(struct net *net, const struct in6_addr *addr,
addr, scope_id, ret,
cm_id->device ? cm_id->device->node_type : -1);
+out:
rdma_destroy_id(cm_id);
return ret;
@@ -491,7 +508,9 @@ void rds_ib_exit(void)
rds_ib_set_unloading();
synchronize_rcu();
rds_info_deregister_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
+#if IS_ENABLED(CONFIG_IPV6)
rds_info_deregister_func(RDS6_INFO_IB_CONNECTIONS, rds6_ib_ic_info);
+#endif
rds_ib_unregister_client();
rds_ib_destroy_nodev_conns();
rds_ib_sysctl_exit();
@@ -553,7 +572,9 @@ int rds_ib_init(void)
rds_trans_register(&rds_ib_transport);
rds_info_register_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
+#if IS_ENABLED(CONFIG_IPV6)
rds_info_register_func(RDS6_INFO_IB_CONNECTIONS, rds6_ib_ic_info);
+#endif
goto out;
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 0d654d9..bfbb31f 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -678,6 +678,7 @@ static u32 rds_ib_protocol_compatible(struct rdma_cm_event *event, bool isv6)
return version;
}
+#if IS_ENABLED(CONFIG_IPV6)
/* Given an IPv6 address, find the net_device which hosts that address and
* return its index. This is used by the rds_ib_cm_handle_connect() code to
* find the interface index of where an incoming request comes from when
@@ -704,6 +705,7 @@ static u32 __rds_find_ifindex(struct net *net, const struct in6_addr *addr)
return idx;
}
+#endif
int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event, bool isv6)
@@ -732,6 +734,7 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
dp = event->param.conn.private_data;
if (isv6) {
+#if IS_ENABLED(CONFIG_IPV6)
dp_cmn = &dp->ricp_v6.dp_cmn;
saddr6 = &dp->ricp_v6.dp_saddr;
daddr6 = &dp->ricp_v6.dp_daddr;
@@ -756,6 +759,10 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
goto out;
}
}
+#else
+ err = -EOPNOTSUPP;
+ goto out;
+#endif
} else {
dp_cmn = &dp->ricp_v4.dp_cmn;
ipv6_addr_set_v4mapped(dp->ricp_v4.dp_saddr, &s_mapped_addr);
@@ -893,9 +900,11 @@ int rds_ib_conn_path_connect(struct rds_conn_path *cp)
/* XXX I wonder what affect the port space has */
/* delegate cm event handler to rdma_transport */
+#if IS_ENABLED(CONFIG_IPV6)
if (conn->c_isv6)
handler = rds6_rdma_cm_event_handler;
else
+#endif
handler = rds_rdma_cm_event_handler;
ic->i_cm_id = rdma_create_id(&init_net, handler, conn,
RDMA_PS_TCP, IB_QPT_RC);
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index e3c8bbb..99ccafb 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -180,6 +180,7 @@ void rds_ib_get_mr_info(struct rds_ib_device *rds_ibdev, struct rds_info_rdma_co
iinfo->rdma_mr_size = pool_1m->fmr_attr.max_pages;
}
+#if IS_ENABLED(CONFIG_IPV6)
void rds6_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
struct rds6_info_rdma_connection *iinfo6)
{
@@ -188,6 +189,7 @@ void rds6_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
iinfo6->rdma_mr_max = pool_1m->max_items;
iinfo6->rdma_mr_size = pool_1m->fmr_attr.max_pages;
}
+#endif
struct rds_ib_mr *rds_ib_reuse_mr(struct rds_ib_mr_pool *pool)
{
diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c
index ad78929..6b0f57c 100644
--- a/net/rds/rdma_transport.c
+++ b/net/rds/rdma_transport.c
@@ -39,7 +39,9 @@
/* Global IPv4 and IPv6 RDS RDMA listener cm_id */
static struct rdma_cm_id *rds_rdma_listen_id;
+#if IS_ENABLED(CONFIG_IPV6)
static struct rdma_cm_id *rds6_rdma_listen_id;
+#endif
static int rds_rdma_cm_event_handler_cmn(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event,
@@ -155,11 +157,13 @@ int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
return rds_rdma_cm_event_handler_cmn(cm_id, event, false);
}
+#if IS_ENABLED(CONFIG_IPV6)
int rds6_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event)
{
return rds_rdma_cm_event_handler_cmn(cm_id, event, true);
}
+#endif
static int rds_rdma_listen_init_common(rdma_cm_event_handler handler,
struct sockaddr *sa,
@@ -214,7 +218,9 @@ static int rds_rdma_listen_init_common(rdma_cm_event_handler handler,
static int rds_rdma_listen_init(void)
{
int ret;
+#if IS_ENABLED(CONFIG_IPV6)
struct sockaddr_in6 sin6;
+#endif
struct sockaddr_in sin;
sin.sin_family = PF_INET;
@@ -226,6 +232,7 @@ static int rds_rdma_listen_init(void)
if (ret != 0)
return ret;
+#if IS_ENABLED(CONFIG_IPV6)
sin6.sin6_family = PF_INET6;
sin6.sin6_addr = in6addr_any;
sin6.sin6_port = htons(RDS_CM_PORT);
@@ -237,6 +244,7 @@ static int rds_rdma_listen_init(void)
/* Keep going even when IPv6 is not enabled in the system. */
if (ret != 0)
rdsdebug("Cannot set up IPv6 RDMA listener\n");
+#endif
return 0;
}
@@ -247,11 +255,13 @@ static void rds_rdma_listen_stop(void)
rdma_destroy_id(rds_rdma_listen_id);
rds_rdma_listen_id = NULL;
}
+#if IS_ENABLED(CONFIG_IPV6)
if (rds6_rdma_listen_id) {
rdsdebug("cm %p\n", rds6_rdma_listen_id);
rdma_destroy_id(rds6_rdma_listen_id);
rds6_rdma_listen_id = NULL;
}
+#endif
}
static int rds_rdma_init(void)
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 03cd8df..504cd6b 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -793,6 +793,7 @@ void rds_inc_info_copy(struct rds_incoming *inc,
rds_info_copy(iter, &minfo, sizeof(minfo));
}
+#if IS_ENABLED(CONFIG_IPV6)
void rds6_inc_info_copy(struct rds_incoming *inc,
struct rds_info_iterator *iter,
struct in6_addr *saddr, struct in6_addr *daddr,
@@ -817,3 +818,4 @@ void rds6_inc_info_copy(struct rds_incoming *inc,
rds_info_copy(iter, &minfo6, sizeof(minfo6));
}
+#endif
diff --git a/net/rds/send.c b/net/rds/send.c
index 18e2b4d..36a5dba 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -1103,6 +1103,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
dport = usin->sin_port;
break;
+#if IS_ENABLED(CONFIG_IPV6)
case AF_INET6: {
int addr_type;
@@ -1142,6 +1143,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
dport = sin6->sin6_port;
break;
}
+#endif
default:
ret = -EINVAL;
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index f23925a..2c7b7c3 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -51,7 +51,9 @@
* rds6_tcp_tc_count counts both IPv4 and IPv6 connections.
*/
static unsigned int rds_tcp_tc_count;
+#if IS_ENABLED(CONFIG_IPV6)
static unsigned int rds6_tcp_tc_count;
+#endif
/* Track rds_tcp_connection structs so they can be cleaned up */
static DEFINE_SPINLOCK(rds_tcp_conn_lock);
@@ -118,7 +120,9 @@ void rds_tcp_restore_callbacks(struct socket *sock,
/* done under the callback_lock to serialize with write_space */
spin_lock(&rds_tcp_tc_list_lock);
list_del_init(&tc->t_list_item);
+#if IS_ENABLED(CONFIG_IPV6)
rds6_tcp_tc_count--;
+#endif
if (!tc->t_cpath->cp_conn->c_isv6)
rds_tcp_tc_count--;
spin_unlock(&rds_tcp_tc_list_lock);
@@ -207,7 +211,9 @@ void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp)
/* done under the callback_lock to serialize with write_space */
spin_lock(&rds_tcp_tc_list_lock);
list_add_tail(&tc->t_list_item, &rds_tcp_tc_list);
+#if IS_ENABLED(CONFIG_IPV6)
rds6_tcp_tc_count++;
+#endif
if (!tc->t_cpath->cp_conn->c_isv6)
rds_tcp_tc_count++;
spin_unlock(&rds_tcp_tc_list_lock);
@@ -273,6 +279,7 @@ static void rds_tcp_tc_info(struct socket *rds_sock, unsigned int len,
spin_unlock_irqrestore(&rds_tcp_tc_list_lock, flags);
}
+#if IS_ENABLED(CONFIG_IPV6)
/* Handle RDS6_INFO_TCP_SOCKETS socket option. It returns both IPv4 and
* IPv6 connections. IPv4 connection address is returned in an IPv4 mapped
* address.
@@ -314,12 +321,15 @@ static void rds6_tcp_tc_info(struct socket *sock, unsigned int len,
spin_unlock_irqrestore(&rds_tcp_tc_list_lock, flags);
}
+#endif
static int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr,
__u32 scope_id)
{
struct net_device *dev = NULL;
+#if IS_ENABLED(CONFIG_IPV6)
int ret;
+#endif
if (ipv6_addr_v4mapped(addr)) {
if (inet_addr_type(net, addr->s6_addr32[3]) == RTN_LOCAL)
@@ -340,9 +350,11 @@ static int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr,
}
rcu_read_unlock();
}
+#if IS_ENABLED(CONFIG_IPV6)
ret = ipv6_chk_addr(net, addr, dev, 0);
if (ret)
return 0;
+#endif
return -EADDRNOTAVAIL;
}
@@ -545,18 +557,27 @@ static __net_init int rds_tcp_init_net(struct net *net)
err = -ENOMEM;
goto fail;
}
+
+#if IS_ENABLED(CONFIG_IPV6)
rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net, true);
+#else
+ rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net, false);
+#endif
if (!rtn->rds_tcp_listen_sock) {
pr_warn("could not set up IPv6 listen sock\n");
+#if IS_ENABLED(CONFIG_IPV6)
/* Try IPv4 as some systems disable IPv6 */
rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net, false);
if (!rtn->rds_tcp_listen_sock) {
+#endif
unregister_net_sysctl_table(rtn->rds_tcp_sysctl);
rtn->rds_tcp_sysctl = NULL;
err = -EAFNOSUPPORT;
goto fail;
+#if IS_ENABLED(CONFIG_IPV6)
}
+#endif
}
INIT_WORK(&rtn->rds_tcp_accept_w, rds_tcp_accept_worker);
return 0;
@@ -670,7 +691,9 @@ static void rds_tcp_exit(void)
rds_tcp_set_unloading();
synchronize_rcu();
rds_info_deregister_func(RDS_INFO_TCP_SOCKETS, rds_tcp_tc_info);
+#if IS_ENABLED(CONFIG_IPV6)
rds_info_deregister_func(RDS6_INFO_TCP_SOCKETS, rds6_tcp_tc_info);
+#endif
unregister_pernet_device(&rds_tcp_net_ops);
rds_tcp_destroy_conns();
rds_trans_unregister(&rds_tcp_transport);
@@ -702,7 +725,9 @@ static int rds_tcp_init(void)
rds_trans_register(&rds_tcp_transport);
rds_info_register_func(RDS_INFO_TCP_SOCKETS, rds_tcp_tc_info);
+#if IS_ENABLED(CONFIG_IPV6)
rds_info_register_func(RDS6_INFO_TCP_SOCKETS, rds6_tcp_tc_info);
+#endif
goto out;
out_recv:
diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c
index 0cf0147..c12203f 100644
--- a/net/rds/tcp_listen.c
+++ b/net/rds/tcp_listen.c
@@ -132,7 +132,10 @@ int rds_tcp_accept_one(struct socket *sock)
int conn_state;
struct rds_conn_path *cp;
struct in6_addr *my_addr, *peer_addr;
- int dev_if;
+#if !IS_ENABLED(CONFIG_IPV6)
+ struct in6_addr saddr, daddr;
+#endif
+ int dev_if = 0;
if (!sock) /* module unload or netns delete in progress */
return -ENETUNREACH;
@@ -165,12 +168,21 @@ int rds_tcp_accept_one(struct socket *sock)
inet = inet_sk(new_sock->sk);
+#if IS_ENABLED(CONFIG_IPV6)
my_addr = &new_sock->sk->sk_v6_rcv_saddr;
peer_addr = &new_sock->sk->sk_v6_daddr;
- rdsdebug("accepted tcp %pI6c:%u -> %pI6c:%u\n",
+#else
+ ipv6_addr_set_v4mapped(inet->inet_saddr, &saddr);
+ ipv6_addr_set_v4mapped(inet->inet_daddr, &daddr);
+ my_addr = &saddr;
+ peer_addr = &daddr;
+#endif
+ rdsdebug("accepted family %d tcp %pI6c:%u -> %pI6c:%u\n",
+ sock->sk->sk_family,
my_addr, ntohs(inet->inet_sport),
peer_addr, ntohs(inet->inet_dport));
+#if IS_ENABLED(CONFIG_IPV6)
/* sk_bound_dev_if is not set if the peer address is not link local
* address. In this case, it happens that mcast_oif is set. So
* just use it.
@@ -184,9 +196,10 @@ int rds_tcp_accept_one(struct socket *sock)
} else {
dev_if = new_sock->sk->sk_bound_dev_if;
}
+#endif
+
conn = rds_conn_create(sock_net(sock->sk),
- &new_sock->sk->sk_v6_rcv_saddr,
- &new_sock->sk->sk_v6_daddr,
+ my_addr, peer_addr,
&rds_tcp_transport, GFP_KERNEL, dev_if);
if (IS_ERR(conn)) {
--
1.8.3.1
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