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authorJason Gunthorpe <jgg@mellanox.com>2018-08-16 14:13:03 -0600
committerJason Gunthorpe <jgg@mellanox.com>2018-08-16 14:21:29 -0600
commit0a3173a5f09bc58a3638ecfd0a80bdbae55e123c (patch)
treed6c0bc84863cca54dfbde3b7463e5d49c82af9f1 /net/rds
parent92f4e77c85918eab5e5803d7e28ab89a7e6bd3a2 (diff)
parent5c60a7389d795e001c8748b458eb76e3a5b6008c (diff)
downloadlinux-stericsson-0a3173a5f09bc58a3638ecfd0a80bdbae55e123c.tar.gz
Merge branch 'linus/master' into rdma.git for-next
rdma.git merge resolution for the 4.19 merge window Conflicts: drivers/infiniband/core/rdma_core.c - Use the rdma code and revise with the new spelling for atomic_fetch_add_unless drivers/nvme/host/rdma.c - Replace max_sge with max_send_sge in new blk code drivers/nvme/target/rdma.c - Use the blk code and revise to use NULL for ib_post_recv when appropriate - Replace max_sge with max_recv_sge in new blk code net/rds/ib_send.c - Use the net code and revise to use NULL for ib_post_recv when appropriate Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'net/rds')
-rw-r--r--net/rds/Kconfig2
-rw-r--r--net/rds/Makefile1
-rw-r--r--net/rds/af_rds.c205
-rw-r--r--net/rds/bind.c138
-rw-r--r--net/rds/cong.c23
-rw-r--r--net/rds/connection.c283
-rw-r--r--net/rds/ib.c136
-rw-r--r--net/rds/ib.h53
-rw-r--r--net/rds/ib_cm.c320
-rw-r--r--net/rds/ib_frmr.c1
-rw-r--r--net/rds/ib_mr.h2
-rw-r--r--net/rds/ib_rdma.c26
-rw-r--r--net/rds/ib_recv.c33
-rw-r--r--net/rds/ib_send.c13
-rw-r--r--net/rds/loop.c7
-rw-r--r--net/rds/message.c1
-rw-r--r--net/rds/rdma.c6
-rw-r--r--net/rds/rdma_transport.c95
-rw-r--r--net/rds/rdma_transport.h5
-rw-r--r--net/rds/rds.h88
-rw-r--r--net/rds/recv.c78
-rw-r--r--net/rds/send.c116
-rw-r--r--net/rds/tcp.c154
-rw-r--r--net/rds/tcp.h2
-rw-r--r--net/rds/tcp_connect.c68
-rw-r--r--net/rds/tcp_listen.c87
-rw-r--r--net/rds/tcp_recv.c9
-rw-r--r--net/rds/tcp_send.c4
-rw-r--r--net/rds/threads.c69
-rw-r--r--net/rds/transport.c16
30 files changed, 1600 insertions, 441 deletions
diff --git a/net/rds/Kconfig b/net/rds/Kconfig
index bffde4b46c5d..01b3bd6a3708 100644
--- a/net/rds/Kconfig
+++ b/net/rds/Kconfig
@@ -16,6 +16,7 @@ config RDS_RDMA
config RDS_TCP
tristate "RDS over TCP"
depends on RDS
+ depends on IPV6 || !IPV6
---help---
Allow RDS to use TCP as a transport.
This transport does not support RDMA operations.
@@ -24,4 +25,3 @@ config RDS_DEBUG
bool "RDS debugging messages"
depends on RDS
default n
-
diff --git a/net/rds/Makefile b/net/rds/Makefile
index b5d568bd479c..e647f9de104a 100644
--- a/net/rds/Makefile
+++ b/net/rds/Makefile
@@ -15,4 +15,3 @@ rds_tcp-y := tcp.o tcp_connect.o tcp_listen.o tcp_recv.o \
tcp_send.o tcp_stats.o
ccflags-$(CONFIG_RDS_DEBUG) := -DRDS_DEBUG
-
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index ab751a150f70..65387e1e6964 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -35,6 +35,7 @@
#include <linux/kernel.h>
#include <linux/gfp.h>
#include <linux/in.h>
+#include <linux/ipv6.h>
#include <linux/poll.h>
#include <net/sock.h>
@@ -113,26 +114,82 @@ void rds_wake_sk_sleep(struct rds_sock *rs)
static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
int peer)
{
- struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
struct rds_sock *rs = rds_sk_to_rs(sock->sk);
-
- memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
+ struct sockaddr_in6 *sin6;
+ struct sockaddr_in *sin;
+ int uaddr_len;
/* racey, don't care */
if (peer) {
- if (!rs->rs_conn_addr)
+ if (ipv6_addr_any(&rs->rs_conn_addr))
return -ENOTCONN;
- sin->sin_port = rs->rs_conn_port;
- sin->sin_addr.s_addr = rs->rs_conn_addr;
+ if (ipv6_addr_v4mapped(&rs->rs_conn_addr)) {
+ sin = (struct sockaddr_in *)uaddr;
+ memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
+ sin->sin_family = AF_INET;
+ sin->sin_port = rs->rs_conn_port;
+ sin->sin_addr.s_addr = rs->rs_conn_addr_v4;
+ uaddr_len = sizeof(*sin);
+ } else {
+ sin6 = (struct sockaddr_in6 *)uaddr;
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_port = rs->rs_conn_port;
+ sin6->sin6_addr = rs->rs_conn_addr;
+ sin6->sin6_flowinfo = 0;
+ /* scope_id is the same as in the bound address. */
+ sin6->sin6_scope_id = rs->rs_bound_scope_id;
+ uaddr_len = sizeof(*sin6);
+ }
} else {
- sin->sin_port = rs->rs_bound_port;
- sin->sin_addr.s_addr = rs->rs_bound_addr;
+ /* If socket is not yet bound and the socket is connected,
+ * set the return address family to be the same as the
+ * connected address, but with 0 address value. If it is not
+ * connected, set the family to be AF_UNSPEC (value 0) and
+ * the address size to be that of an IPv4 address.
+ */
+ if (ipv6_addr_any(&rs->rs_bound_addr)) {
+ if (ipv6_addr_any(&rs->rs_conn_addr)) {
+ sin = (struct sockaddr_in *)uaddr;
+ memset(sin, 0, sizeof(*sin));
+ sin->sin_family = AF_UNSPEC;
+ 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
+
+ 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;
+ memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
+ sin->sin_family = AF_INET;
+ sin->sin_port = rs->rs_bound_port;
+ sin->sin_addr.s_addr = rs->rs_bound_addr_v4;
+ uaddr_len = sizeof(*sin);
+ } else {
+ sin6 = (struct sockaddr_in6 *)uaddr;
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_port = rs->rs_bound_port;
+ sin6->sin6_addr = rs->rs_bound_addr;
+ sin6->sin6_flowinfo = 0;
+ sin6->sin6_scope_id = rs->rs_bound_scope_id;
+ uaddr_len = sizeof(*sin6);
+ }
}
- sin->sin_family = AF_INET;
-
- return sizeof(*sin);
+ return uaddr_len;
}
/*
@@ -203,11 +260,12 @@ static int rds_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
static int rds_cancel_sent_to(struct rds_sock *rs, char __user *optval,
int len)
{
+ struct sockaddr_in6 sin6;
struct sockaddr_in sin;
int ret = 0;
/* racing with another thread binding seems ok here */
- if (rs->rs_bound_addr == 0) {
+ if (ipv6_addr_any(&rs->rs_bound_addr)) {
ret = -ENOTCONN; /* XXX not a great errno */
goto out;
}
@@ -215,14 +273,23 @@ static int rds_cancel_sent_to(struct rds_sock *rs, char __user *optval,
if (len < sizeof(struct sockaddr_in)) {
ret = -EINVAL;
goto out;
+ } else if (len < sizeof(struct sockaddr_in6)) {
+ /* Assume IPv4 */
+ if (copy_from_user(&sin, optval, sizeof(struct sockaddr_in))) {
+ ret = -EFAULT;
+ goto out;
+ }
+ ipv6_addr_set_v4mapped(sin.sin_addr.s_addr, &sin6.sin6_addr);
+ sin6.sin6_port = sin.sin_port;
+ } else {
+ if (copy_from_user(&sin6, optval,
+ sizeof(struct sockaddr_in6))) {
+ ret = -EFAULT;
+ goto out;
+ }
}
- if (copy_from_user(&sin, optval, sizeof(sin))) {
- ret = -EFAULT;
- goto out;
- }
-
- rds_send_drop_to(rs, &sin);
+ rds_send_drop_to(rs, &sin6);
out:
return ret;
}
@@ -435,31 +502,91 @@ static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
- struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
+ struct sockaddr_in *sin;
struct rds_sock *rs = rds_sk_to_rs(sk);
int ret = 0;
lock_sock(sk);
- if (addr_len != sizeof(struct sockaddr_in)) {
- ret = -EINVAL;
- goto out;
- }
+ switch (uaddr->sa_family) {
+ case AF_INET:
+ sin = (struct sockaddr_in *)uaddr;
+ if (addr_len < sizeof(struct sockaddr_in)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (sin->sin_addr.s_addr == htonl(INADDR_ANY)) {
+ ret = -EDESTADDRREQ;
+ break;
+ }
+ if (IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) ||
+ sin->sin_addr.s_addr == htonl(INADDR_BROADCAST)) {
+ ret = -EINVAL;
+ break;
+ }
+ ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &rs->rs_conn_addr);
+ rs->rs_conn_port = sin->sin_port;
+ break;
- if (sin->sin_family != AF_INET) {
- ret = -EAFNOSUPPORT;
- goto out;
- }
+#if IS_ENABLED(CONFIG_IPV6)
+ case AF_INET6: {
+ struct sockaddr_in6 *sin6;
+ int addr_type;
- if (sin->sin_addr.s_addr == htonl(INADDR_ANY)) {
- ret = -EDESTADDRREQ;
- goto out;
+ sin6 = (struct sockaddr_in6 *)uaddr;
+ if (addr_len < sizeof(struct sockaddr_in6)) {
+ ret = -EINVAL;
+ break;
+ }
+ addr_type = ipv6_addr_type(&sin6->sin6_addr);
+ if (!(addr_type & IPV6_ADDR_UNICAST)) {
+ __be32 addr4;
+
+ if (!(addr_type & IPV6_ADDR_MAPPED)) {
+ ret = -EPROTOTYPE;
+ break;
+ }
+
+ /* It is a mapped address. Need to do some sanity
+ * checks.
+ */
+ addr4 = sin6->sin6_addr.s6_addr32[3];
+ if (addr4 == htonl(INADDR_ANY) ||
+ addr4 == htonl(INADDR_BROADCAST) ||
+ IN_MULTICAST(ntohl(addr4))) {
+ ret = -EPROTOTYPE;
+ break;
+ }
+ }
+
+ if (addr_type & IPV6_ADDR_LINKLOCAL) {
+ /* If socket is arleady bound to a link local address,
+ * the peer address must be on the same link.
+ */
+ if (sin6->sin6_scope_id == 0 ||
+ (!ipv6_addr_any(&rs->rs_bound_addr) &&
+ rs->rs_bound_scope_id &&
+ sin6->sin6_scope_id != rs->rs_bound_scope_id)) {
+ ret = -EINVAL;
+ break;
+ }
+ /* Remember the connected address scope ID. It will
+ * be checked against the binding local address when
+ * the socket is bound.
+ */
+ rs->rs_bound_scope_id = sin6->sin6_scope_id;
+ }
+ rs->rs_conn_addr = sin6->sin6_addr;
+ rs->rs_conn_port = sin6->sin6_port;
+ break;
}
+#endif
- rs->rs_conn_addr = sin->sin_addr.s_addr;
- rs->rs_conn_port = sin->sin_port;
+ default:
+ ret = -EAFNOSUPPORT;
+ break;
+ }
-out:
release_sock(sk);
return ret;
}
@@ -578,8 +705,10 @@ static void rds_sock_inc_info(struct socket *sock, unsigned int len,
list_for_each_entry(inc, &rs->rs_recv_queue, i_item) {
total++;
if (total <= len)
- rds_inc_info_copy(inc, iter, inc->i_saddr,
- rs->rs_bound_addr, 1);
+ rds_inc_info_copy(inc, iter,
+ inc->i_saddr.s6_addr32[3],
+ rs->rs_bound_addr_v4,
+ 1);
}
read_unlock(&rs->rs_recv_lock);
@@ -608,8 +737,8 @@ static void rds_sock_info(struct socket *sock, unsigned int len,
list_for_each_entry(rs, &rds_sock_list, rs_item) {
sinfo.sndbuf = rds_sk_sndbuf(rs);
sinfo.rcvbuf = rds_sk_rcvbuf(rs);
- sinfo.bound_addr = rs->rs_bound_addr;
- sinfo.connected_addr = rs->rs_conn_addr;
+ sinfo.bound_addr = rs->rs_bound_addr_v4;
+ sinfo.connected_addr = rs->rs_conn_addr_v4;
sinfo.bound_port = rs->rs_bound_port;
sinfo.connected_port = rs->rs_conn_port;
sinfo.inum = sock_i_ino(rds_rs_to_sk(rs));
diff --git a/net/rds/bind.c b/net/rds/bind.c
index 5aa3a64aa4f0..3ab55784b637 100644
--- a/net/rds/bind.c
+++ b/net/rds/bind.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -33,6 +33,7 @@
#include <linux/kernel.h>
#include <net/sock.h>
#include <linux/in.h>
+#include <linux/ipv6.h>
#include <linux/if_arp.h>
#include <linux/jhash.h>
#include <linux/ratelimit.h>
@@ -42,42 +43,58 @@ static struct rhashtable bind_hash_table;
static const struct rhashtable_params ht_parms = {
.nelem_hint = 768,
- .key_len = sizeof(u64),
+ .key_len = RDS_BOUND_KEY_LEN,
.key_offset = offsetof(struct rds_sock, rs_bound_key),
.head_offset = offsetof(struct rds_sock, rs_bound_node),
.max_size = 16384,
.min_size = 1024,
};
+/* Create a key for the bind hash table manipulation. Port is in network byte
+ * order.
+ */
+static inline void __rds_create_bind_key(u8 *key, const struct in6_addr *addr,
+ __be16 port, __u32 scope_id)
+{
+ memcpy(key, addr, sizeof(*addr));
+ key += sizeof(*addr);
+ memcpy(key, &port, sizeof(port));
+ key += sizeof(port);
+ memcpy(key, &scope_id, sizeof(scope_id));
+}
+
/*
* Return the rds_sock bound at the given local address.
*
* The rx path can race with rds_release. We notice if rds_release() has
* marked this socket and don't return a rs ref to the rx path.
*/
-struct rds_sock *rds_find_bound(__be32 addr, __be16 port)
+struct rds_sock *rds_find_bound(const struct in6_addr *addr, __be16 port,
+ __u32 scope_id)
{
- u64 key = ((u64)addr << 32) | port;
+ u8 key[RDS_BOUND_KEY_LEN];
struct rds_sock *rs;
- rs = rhashtable_lookup_fast(&bind_hash_table, &key, ht_parms);
+ __rds_create_bind_key(key, addr, port, scope_id);
+ rs = rhashtable_lookup_fast(&bind_hash_table, key, ht_parms);
if (rs && !sock_flag(rds_rs_to_sk(rs), SOCK_DEAD))
rds_sock_addref(rs);
else
rs = NULL;
- rdsdebug("returning rs %p for %pI4:%u\n", rs, &addr,
- ntohs(port));
+ rdsdebug("returning rs %p for %pI6c:%u\n", rs, addr,
+ ntohs(port));
return rs;
}
/* returns -ve errno or +ve port */
-static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port)
+static int rds_add_bound(struct rds_sock *rs, const struct in6_addr *addr,
+ __be16 *port, __u32 scope_id)
{
int ret = -EADDRINUSE;
u16 rover, last;
- u64 key;
+ u8 key[RDS_BOUND_KEY_LEN];
if (*port != 0) {
rover = be16_to_cpu(*port);
@@ -95,12 +112,13 @@ static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port)
if (rover == RDS_FLAG_PROBE_PORT)
continue;
- key = ((u64)addr << 32) | cpu_to_be16(rover);
- if (rhashtable_lookup_fast(&bind_hash_table, &key, ht_parms))
+ __rds_create_bind_key(key, addr, cpu_to_be16(rover),
+ scope_id);
+ if (rhashtable_lookup_fast(&bind_hash_table, key, ht_parms))
continue;
- rs->rs_bound_key = key;
- rs->rs_bound_addr = addr;
+ memcpy(rs->rs_bound_key, key, sizeof(rs->rs_bound_key));
+ rs->rs_bound_addr = *addr;
net_get_random_once(&rs->rs_hash_initval,
sizeof(rs->rs_hash_initval));
rs->rs_bound_port = cpu_to_be16(rover);
@@ -109,12 +127,13 @@ static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port)
if (!rhashtable_insert_fast(&bind_hash_table,
&rs->rs_bound_node, ht_parms)) {
*port = rs->rs_bound_port;
+ rs->rs_bound_scope_id = scope_id;
ret = 0;
- rdsdebug("rs %p binding to %pI4:%d\n",
- rs, &addr, (int)ntohs(*port));
+ rdsdebug("rs %p binding to %pI6c:%d\n",
+ rs, addr, (int)ntohs(*port));
break;
} else {
- rs->rs_bound_addr = 0;
+ rs->rs_bound_addr = in6addr_any;
rds_sock_put(rs);
ret = -ENOMEM;
break;
@@ -127,44 +146,103 @@ static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port)
void rds_remove_bound(struct rds_sock *rs)
{
- if (!rs->rs_bound_addr)
+ if (ipv6_addr_any(&rs->rs_bound_addr))
return;
- rdsdebug("rs %p unbinding from %pI4:%d\n",
+ rdsdebug("rs %p unbinding from %pI6c:%d\n",
rs, &rs->rs_bound_addr,
ntohs(rs->rs_bound_port));
rhashtable_remove_fast(&bind_hash_table, &rs->rs_bound_node, ht_parms);
rds_sock_put(rs);
- rs->rs_bound_addr = 0;
+ rs->rs_bound_addr = in6addr_any;
}
int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
- struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
struct rds_sock *rs = rds_sk_to_rs(sk);
+ struct in6_addr v6addr, *binding_addr;
struct rds_transport *trans;
+ __u32 scope_id = 0;
int ret = 0;
+ __be16 port;
+
+ /* We allow an RDS socket to be bound to either IPv4 or IPv6
+ * address.
+ */
+ if (uaddr->sa_family == AF_INET) {
+ struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
+
+ if (addr_len < sizeof(struct sockaddr_in) ||
+ sin->sin_addr.s_addr == htonl(INADDR_ANY) ||
+ sin->sin_addr.s_addr == htonl(INADDR_BROADCAST) ||
+ IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
+ return -EINVAL;
+ 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;
+ addr_type = ipv6_addr_type(&sin6->sin6_addr);
+ if (!(addr_type & IPV6_ADDR_UNICAST)) {
+ __be32 addr4;
+ if (!(addr_type & IPV6_ADDR_MAPPED))
+ return -EINVAL;
+
+ /* It is a mapped address. Need to do some sanity
+ * checks.
+ */
+ addr4 = sin6->sin6_addr.s6_addr32[3];
+ if (addr4 == htonl(INADDR_ANY) ||
+ addr4 == htonl(INADDR_BROADCAST) ||
+ IN_MULTICAST(ntohl(addr4)))
+ return -EINVAL;
+ }
+ /* The scope ID must be specified for link local address. */
+ if (addr_type & IPV6_ADDR_LINKLOCAL) {
+ if (sin6->sin6_scope_id == 0)
+ return -EINVAL;
+ scope_id = sin6->sin6_scope_id;
+ }
+ binding_addr = &sin6->sin6_addr;
+ port = sin6->sin6_port;
+#endif
+ } else {
+ return -EINVAL;
+ }
lock_sock(sk);
- if (addr_len != sizeof(struct sockaddr_in) ||
- sin->sin_family != AF_INET ||
- rs->rs_bound_addr ||
- sin->sin_addr.s_addr == htonl(INADDR_ANY)) {
+ /* RDS socket does not allow re-binding. */
+ if (!ipv6_addr_any(&rs->rs_bound_addr)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ /* Socket is connected. The binding address should have the same
+ * scope ID as the connected address, except the case when one is
+ * non-link local address (scope_id is 0).
+ */
+ if (!ipv6_addr_any(&rs->rs_conn_addr) && scope_id &&
+ rs->rs_bound_scope_id &&
+ scope_id != rs->rs_bound_scope_id) {
ret = -EINVAL;
goto out;
}
- ret = rds_add_bound(rs, sin->sin_addr.s_addr, &sin->sin_port);
+ ret = rds_add_bound(rs, binding_addr, &port, scope_id);
if (ret)
goto out;
if (rs->rs_transport) { /* previously bound */
trans = rs->rs_transport;
if (trans->laddr_check(sock_net(sock->sk),
- sin->sin_addr.s_addr) != 0) {
+ binding_addr, scope_id) != 0) {
ret = -ENOPROTOOPT;
rds_remove_bound(rs);
} else {
@@ -172,13 +250,13 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
}
goto out;
}
- trans = rds_trans_get_preferred(sock_net(sock->sk),
- sin->sin_addr.s_addr);
+ trans = rds_trans_get_preferred(sock_net(sock->sk), binding_addr,
+ scope_id);
if (!trans) {
ret = -EADDRNOTAVAIL;
rds_remove_bound(rs);
- pr_info_ratelimited("RDS: %s could not find a transport for %pI4, load rds_tcp or rds_rdma?\n",
- __func__, &sin->sin_addr.s_addr);
+ pr_info_ratelimited("RDS: %s could not find a transport for %pI6c, load rds_tcp or rds_rdma?\n",
+ __func__, binding_addr);
goto out;
}
diff --git a/net/rds/cong.c b/net/rds/cong.c
index 63da9d2f142d..ccdff09a79c8 100644
--- a/net/rds/cong.c
+++ b/net/rds/cong.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007 Oracle. All rights reserved.
+ * Copyright (c) 2007, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -101,7 +101,7 @@ static DEFINE_RWLOCK(rds_cong_monitor_lock);
static DEFINE_SPINLOCK(rds_cong_lock);
static struct rb_root rds_cong_tree = RB_ROOT;
-static struct rds_cong_map *rds_cong_tree_walk(__be32 addr,
+static struct rds_cong_map *rds_cong_tree_walk(const struct in6_addr *addr,
struct rds_cong_map *insert)
{
struct rb_node **p = &rds_cong_tree.rb_node;
@@ -109,12 +109,15 @@ static struct rds_cong_map *rds_cong_tree_walk(__be32 addr,
struct rds_cong_map *map;
while (*p) {
+ int diff;
+
parent = *p;
map = rb_entry(parent, struct rds_cong_map, m_rb_node);
- if (addr < map->m_addr)
+ diff = rds_addr_cmp(addr, &map->m_addr);
+ if (diff < 0)
p = &(*p)->rb_left;
- else if (addr > map->m_addr)
+ else if (diff > 0)
p = &(*p)->rb_right;
else
return map;
@@ -132,7 +135,7 @@ static struct rds_cong_map *rds_cong_tree_walk(__be32 addr,
* these bitmaps in the process getting pointers to them. The bitmaps are only
* ever freed as the module is removed after all connections have been freed.
*/
-static struct rds_cong_map *rds_cong_from_addr(__be32 addr)
+static struct rds_cong_map *rds_cong_from_addr(const struct in6_addr *addr)
{
struct rds_cong_map *map;
struct rds_cong_map *ret = NULL;
@@ -144,7 +147,7 @@ static struct rds_cong_map *rds_cong_from_addr(__be32 addr)
if (!map)
return NULL;
- map->m_addr = addr;
+ map->m_addr = *addr;
init_waitqueue_head(&map->m_waitq);
INIT_LIST_HEAD(&map->m_conn_list);
@@ -171,7 +174,7 @@ out:
kfree(map);
}
- rdsdebug("map %p for addr %x\n", ret, be32_to_cpu(addr));
+ rdsdebug("map %p for addr %pI6c\n", ret, addr);
return ret;
}
@@ -202,8 +205,8 @@ void rds_cong_remove_conn(struct rds_connection *conn)
int rds_cong_get_maps(struct rds_connection *conn)
{
- conn->c_lcong = rds_cong_from_addr(conn->c_laddr);
- conn->c_fcong = rds_cong_from_addr(conn->c_faddr);
+ conn->c_lcong = rds_cong_from_addr(&conn->c_laddr);
+ conn->c_fcong = rds_cong_from_addr(&conn->c_faddr);
if (!(conn->c_lcong && conn->c_fcong))
return -ENOMEM;
@@ -353,7 +356,7 @@ void rds_cong_remove_socket(struct rds_sock *rs)
/* update congestion map for now-closed port */
spin_lock_irqsave(&rds_cong_lock, flags);
- map = rds_cong_tree_walk(rs->rs_bound_addr, NULL);
+ map = rds_cong_tree_walk(&rs->rs_bound_addr, NULL);
spin_unlock_irqrestore(&rds_cong_lock, flags);
if (map && rds_cong_test_bit(map, rs->rs_bound_port)) {
diff --git a/net/rds/connection.c b/net/rds/connection.c
index cfb05953b0e5..3bd2f4a5a30d 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -34,7 +34,9 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/export.h>
-#include <net/inet_hashtables.h>
+#include <net/ipv6.h>
+#include <net/inet6_hashtables.h>
+#include <net/addrconf.h>
#include "rds.h"
#include "loop.h"
@@ -49,18 +51,25 @@ static unsigned long rds_conn_count;
static struct hlist_head rds_conn_hash[RDS_CONNECTION_HASH_ENTRIES];
static struct kmem_cache *rds_conn_slab;
-static struct hlist_head *rds_conn_bucket(__be32 laddr, __be32 faddr)
+static struct hlist_head *rds_conn_bucket(const struct in6_addr *laddr,
+ const struct in6_addr *faddr)
{
+ static u32 rds6_hash_secret __read_mostly;
static u32 rds_hash_secret __read_mostly;
- unsigned long hash;
+ u32 lhash, fhash, hash;
net_get_random_once(&rds_hash_secret, sizeof(rds_hash_secret));
+ 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);
+#else
+ fhash = (__force u32)faddr->s6_addr32[3];
+#endif
+ hash = __inet_ehashfn(lhash, 0, fhash, 0, rds_hash_secret);
- /* Pass NULL, don't need struct net for hash */
- hash = __inet_ehashfn(be32_to_cpu(laddr), 0,
- be32_to_cpu(faddr), 0,
- rds_hash_secret);
return &rds_conn_hash[hash & RDS_CONNECTION_HASH_MASK];
}
@@ -72,20 +81,25 @@ static struct hlist_head *rds_conn_bucket(__be32 laddr, __be32 faddr)
/* rcu read lock must be held or the connection spinlock */
static struct rds_connection *rds_conn_lookup(struct net *net,
struct hlist_head *head,
- __be32 laddr, __be32 faddr,
- struct rds_transport *trans)
+ const struct in6_addr *laddr,
+ const struct in6_addr *faddr,
+ struct rds_transport *trans,
+ int dev_if)
{
struct rds_connection *conn, *ret = NULL;
hlist_for_each_entry_rcu(conn, head, c_hash_node) {
- if (conn->c_faddr == faddr && conn->c_laddr == laddr &&
- conn->c_trans == trans && net == rds_conn_net(conn)) {
+ if (ipv6_addr_equal(&conn->c_faddr, faddr) &&
+ ipv6_addr_equal(&conn->c_laddr, laddr) &&
+ conn->c_trans == trans &&
+ net == rds_conn_net(conn) &&
+ conn->c_dev_if == dev_if) {
ret = conn;
break;
}
}
- rdsdebug("returning conn %p for %pI4 -> %pI4\n", ret,
- &laddr, &faddr);
+ rdsdebug("returning conn %p for %pI6c -> %pI6c\n", ret,
+ laddr, faddr);
return ret;
}
@@ -99,8 +113,8 @@ static void rds_conn_path_reset(struct rds_conn_path *cp)
{
struct rds_connection *conn = cp->cp_conn;
- rdsdebug("connection %pI4 to %pI4 reset\n",
- &conn->c_laddr, &conn->c_faddr);
+ rdsdebug("connection %pI6c to %pI6c reset\n",
+ &conn->c_laddr, &conn->c_faddr);
rds_stats_inc(s_conn_reset);
rds_send_path_reset(cp);
@@ -142,9 +156,12 @@ static void __rds_conn_path_init(struct rds_connection *conn,
* are torn down as the module is removed, if ever.
*/
static struct rds_connection *__rds_conn_create(struct net *net,
- __be32 laddr, __be32 faddr,
- struct rds_transport *trans, gfp_t gfp,
- int is_outgoing)
+ const struct in6_addr *laddr,
+ const struct in6_addr *faddr,
+ struct rds_transport *trans,
+ gfp_t gfp,
+ int is_outgoing,
+ int dev_if)
{
struct rds_connection *conn, *parent = NULL;
struct hlist_head *head = rds_conn_bucket(laddr, faddr);
@@ -154,9 +171,12 @@ static struct rds_connection *__rds_conn_create(struct net *net,
int npaths = (trans->t_mp_capable ? RDS_MPATH_WORKERS : 1);
rcu_read_lock();
- conn = rds_conn_lookup(net, head, laddr, faddr, trans);
- if (conn && conn->c_loopback && conn->c_trans != &rds_loop_transport &&
- laddr == faddr && !is_outgoing) {
+ conn = rds_conn_lookup(net, head, laddr, faddr, trans, dev_if);
+ if (conn &&
+ conn->c_loopback &&
+ conn->c_trans != &rds_loop_transport &&
+ ipv6_addr_equal(laddr, faddr) &&
+ !is_outgoing) {
/* This is a looped back IB connection, and we're
* called by the code handling the incoming connect.
* We need a second connection object into which we
@@ -181,8 +201,22 @@ static struct rds_connection *__rds_conn_create(struct net *net,
}
INIT_HLIST_NODE(&conn->c_hash_node);
- conn->c_laddr = laddr;
- conn->c_faddr = faddr;
+ conn->c_laddr = *laddr;
+ 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
+ * to look up a socket when a packet is received
+ */
+ 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);
@@ -199,7 +233,7 @@ static struct rds_connection *__rds_conn_create(struct net *net,
* can bind to the destination address then we'd rather the messages
* flow through loopback rather than either transport.
*/
- loop_trans = rds_trans_get_preferred(net, faddr);
+ loop_trans = rds_trans_get_preferred(net, faddr, conn->c_dev_if);
if (loop_trans) {
rds_trans_put(loop_trans);
conn->c_loopback = 1;
@@ -233,10 +267,10 @@ static struct rds_connection *__rds_conn_create(struct net *net,
goto out;
}
- rdsdebug("allocated conn %p for %pI4 -> %pI4 over %s %s\n",
- conn, &laddr, &faddr,
- strnlen(trans->t_name, sizeof(trans->t_name)) ? trans->t_name :
- "[unknown]", is_outgoing ? "(outgoing)" : "");
+ rdsdebug("allocated conn %p for %pI6c -> %pI6c over %s %s\n",
+ conn, laddr, faddr,
+ strnlen(trans->t_name, sizeof(trans->t_name)) ?
+ trans->t_name : "[unknown]", is_outgoing ? "(outgoing)" : "");
/*
* Since we ran without holding the conn lock, someone could
@@ -262,7 +296,8 @@ static struct rds_connection *__rds_conn_create(struct net *net,
/* Creating normal conn */
struct rds_connection *found;
- found = rds_conn_lookup(net, head, laddr, faddr, trans);
+ found = rds_conn_lookup(net, head, laddr, faddr, trans,
+ dev_if);
if (found) {
struct rds_conn_path *cp;
int i;
@@ -295,18 +330,22 @@ out:
}
struct rds_connection *rds_conn_create(struct net *net,
- __be32 laddr, __be32 faddr,
- struct rds_transport *trans, gfp_t gfp)
+ const struct in6_addr *laddr,
+ const struct in6_addr *faddr,
+ struct rds_transport *trans, gfp_t gfp,
+ int dev_if)
{
- return __rds_conn_create(net, laddr, faddr, trans, gfp, 0);
+ return __rds_conn_create(net, laddr, faddr, trans, gfp, 0, dev_if);
}
EXPORT_SYMBOL_GPL(rds_conn_create);
struct rds_connection *rds_conn_create_outgoing(struct net *net,
- __be32 laddr, __be32 faddr,
- struct rds_transport *trans, gfp_t gfp)
+ const struct in6_addr *laddr,
+ const struct in6_addr *faddr,
+ struct rds_transport *trans,
+ gfp_t gfp, int dev_if)
{
- return __rds_conn_create(net, laddr, faddr, trans, gfp, 1);
+ return __rds_conn_create(net, laddr, faddr, trans, gfp, 1, dev_if);
}
EXPORT_SYMBOL_GPL(rds_conn_create_outgoing);
@@ -464,10 +503,23 @@ void rds_conn_destroy(struct rds_connection *conn)
}
EXPORT_SYMBOL_GPL(rds_conn_destroy);
-static void rds_conn_message_info(struct socket *sock, unsigned int len,
- struct rds_info_iterator *iter,
- struct rds_info_lengths *lens,
- int want_send)
+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);
+}
+
+static void rds_conn_message_info_cmn(struct socket *sock, unsigned int len,
+ struct rds_info_iterator *iter,
+ struct rds_info_lengths *lens,
+ int want_send, bool isv6)
{
struct hlist_head *head;
struct list_head *list;
@@ -478,7 +530,10 @@ static void rds_conn_message_info(struct socket *sock, unsigned int len,
size_t i;
int j;
- len /= sizeof(struct rds_info_message);
+ if (isv6)
+ len /= sizeof(struct rds6_info_message);
+ else
+ len /= sizeof(struct rds_info_message);
rcu_read_lock();
@@ -488,6 +543,9 @@ static void rds_conn_message_info(struct socket *sock, unsigned int len,
struct rds_conn_path *cp;
int npaths;
+ if (!isv6 && conn->c_isv6)
+ continue;
+
npaths = (conn->c_trans->t_mp_capable ?
RDS_MPATH_WORKERS : 1);
@@ -504,11 +562,11 @@ static void rds_conn_message_info(struct socket *sock, unsigned int len,
list_for_each_entry(rm, list, m_conn_item) {
total++;
if (total <= len)
- rds_inc_info_copy(&rm->m_inc,
- iter,
- conn->c_laddr,
- conn->c_faddr,
- 0);
+ __rds_inc_msg_cp(&rm->m_inc,
+ iter,
+ &conn->c_laddr,
+ &conn->c_faddr,
+ 0, isv6);
}
spin_unlock_irqrestore(&cp->cp_lock, flags);
@@ -518,9 +576,30 @@ static void rds_conn_message_info(struct socket *sock, unsigned int len,
rcu_read_unlock();
lens->nr = total;
- lens->each = sizeof(struct rds_info_message);
+ if (isv6)
+ lens->each = sizeof(struct rds6_info_message);
+ else
+ lens->each = sizeof(struct rds_info_message);
}
+static void rds_conn_message_info(struct socket *sock, unsigned int len,
+ struct rds_info_iterator *iter,
+ struct rds_info_lengths *lens,
+ int want_send)
+{
+ 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,
+ int want_send)
+{
+ 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,
struct rds_info_lengths *lens)
@@ -528,6 +607,15 @@ 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,
struct rds_info_iterator *iter,
@@ -536,6 +624,16 @@ 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,
+ struct rds_info_lengths *lens)
+{
+ 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,
struct rds_info_lengths *lens,
@@ -584,7 +682,6 @@ static void rds_walk_conn_path_info(struct socket *sock, unsigned int len,
struct hlist_head *head;
struct rds_connection *conn;
size_t i;
- int j;
rcu_read_lock();
@@ -595,17 +692,20 @@ static void rds_walk_conn_path_info(struct socket *sock, unsigned int len,
i++, head++) {
hlist_for_each_entry_rcu(conn, head, c_hash_node) {
struct rds_conn_path *cp;
- int npaths;
- npaths = (conn->c_trans->t_mp_capable ?
- RDS_MPATH_WORKERS : 1);
- for (j = 0; j < npaths; j++) {
- cp = &conn->c_path[j];
+ /* XXX We only copy the information from the first
+ * path for now. The problem is that if there are
+ * more than one underlying paths, we cannot report
+ * information of all of them using the existing
+ * API. For example, there is only one next_tx_seq,
+ * which path's next_tx_seq should we report? It is
+ * a bug in the design of MPRDS.
+ */
+ cp = conn->c_path;
- /* XXX no cp_lock usage.. */
- if (!visitor(cp, buffer))
- continue;
- }
+ /* XXX no cp_lock usage.. */
+ if (!visitor(cp, buffer))
+ continue;
/* We copy as much as we can fit in the buffer,
* but we count all items so that the caller
@@ -624,12 +724,16 @@ static void rds_walk_conn_path_info(struct socket *sock, unsigned int len,
static int rds_conn_info_visitor(struct rds_conn_path *cp, void *buffer)
{
struct rds_info_connection *cinfo = buffer;
+ struct rds_connection *conn = cp->cp_conn;
+
+ if (conn->c_isv6)
+ return 0;
cinfo->next_tx_seq = cp->cp_next_tx_seq;
cinfo->next_rx_seq = cp->cp_next_rx_seq;
- cinfo->laddr = cp->cp_conn->c_laddr;
- cinfo->faddr = cp->cp_conn->c_faddr;
- strncpy(cinfo->transport, cp->cp_conn->c_trans->t_name,
+ cinfo->laddr = conn->c_laddr.s6_addr32[3];
+ cinfo->faddr = conn->c_faddr.s6_addr32[3];
+ strncpy(cinfo->transport, conn->c_trans->t_name,
sizeof(cinfo->transport));
cinfo->flags = 0;
@@ -645,6 +749,36 @@ 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;
+ struct rds_connection *conn = cp->cp_conn;
+
+ cinfo6->next_tx_seq = cp->cp_next_tx_seq;
+ cinfo6->next_rx_seq = cp->cp_next_rx_seq;
+ cinfo6->laddr = conn->c_laddr;
+ cinfo6->faddr = conn->c_faddr;
+ strncpy(cinfo6->transport, conn->c_trans->t_name,
+ sizeof(cinfo6->transport));
+ cinfo6->flags = 0;
+
+ rds_conn_info_set(cinfo6->flags, test_bit(RDS_IN_XMIT, &cp->cp_flags),
+ SENDING);
+ /* XXX Future: return the state rather than these funky bits */
+ rds_conn_info_set(cinfo6->flags,
+ atomic_read(&cp->cp_state) == RDS_CONN_CONNECTING,
+ CONNECTING);
+ rds_conn_info_set(cinfo6->flags,
+ atomic_read(&cp->cp_state) == RDS_CONN_UP,
+ CONNECTED);
+ /* Just return 1 as there is no error case. This is a helper function
+ * for rds_walk_conn_path_info() and it wants a return value.
+ */
+ return 1;
+}
+#endif
+
static void rds_conn_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens)
@@ -657,6 +791,20 @@ 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)
+{
+ u64 buffer[(sizeof(struct rds6_info_connection) + 7) / 8];
+
+ rds_walk_conn_path_info(sock, len, iter, lens,
+ rds6_conn_info_visitor,
+ buffer,
+ sizeof(struct rds6_info_connection));
+}
+#endif
+
int rds_conn_init(void)
{
int ret;
@@ -678,7 +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;
}
@@ -696,6 +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 683b55d4e2b0..c1d97640c0be 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -39,6 +39,7 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <net/addrconf.h>
#include "rds_single_path.h"
#include "rds.h"
@@ -295,9 +296,11 @@ static int rds_ib_conn_info_visitor(struct rds_connection *conn,
/* We will only ever look at IB transports */
if (conn->c_trans != &rds_ib_transport)
return 0;
+ if (conn->c_isv6)
+ return 0;
- iinfo->src_addr = conn->c_laddr;
- iinfo->dst_addr = conn->c_faddr;
+ iinfo->src_addr = conn->c_laddr.s6_addr32[3];
+ iinfo->dst_addr = conn->c_faddr.s6_addr32[3];
memset(&iinfo->src_gid, 0, sizeof(iinfo->src_gid));
memset(&iinfo->dst_gid, 0, sizeof(iinfo->dst_gid));
@@ -318,6 +321,45 @@ 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)
+{
+ struct rds6_info_rdma_connection *iinfo6 = buffer;
+ struct rds_ib_connection *ic;
+
+ /* We will only ever look at IB transports */
+ if (conn->c_trans != &rds_ib_transport)
+ return 0;
+
+ iinfo6->src_addr = conn->c_laddr;
+ iinfo6->dst_addr = conn->c_faddr;
+
+ memset(&iinfo6->src_gid, 0, sizeof(iinfo6->src_gid));
+ memset(&iinfo6->dst_gid, 0, sizeof(iinfo6->dst_gid));
+
+ if (rds_conn_state(conn) == RDS_CONN_UP) {
+ struct rds_ib_device *rds_ibdev;
+ struct rdma_dev_addr *dev_addr;
+
+ ic = conn->c_transport_data;
+ dev_addr = &ic->i_cm_id->route.addr.dev_addr;
+ rdma_addr_get_sgid(dev_addr,
+ (union ib_gid *)&iinfo6->src_gid);
+ rdma_addr_get_dgid(dev_addr,
+ (union ib_gid *)&iinfo6->dst_gid);
+
+ rds_ibdev = ic->rds_ibdev;
+ iinfo6->max_send_wr = ic->i_send_ring.w_nr;
+ iinfo6->max_recv_wr = ic->i_recv_ring.w_nr;
+ iinfo6->max_send_sge = rds_ibdev->max_sge;
+ rds6_ib_get_mr_info(rds_ibdev, iinfo6);
+ }
+ return 1;
+}
+#endif
+
static void rds_ib_ic_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens)
@@ -330,6 +372,20 @@ 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,
+ struct rds_info_lengths *lens)
+{
+ u64 buffer[(sizeof(struct rds6_info_rdma_connection) + 7) / 8];
+
+ rds_for_each_conn_info(sock, len, iter, lens,
+ rds6_ib_conn_info_visitor,
+ buffer,
+ sizeof(struct rds6_info_rdma_connection));
+}
+#endif
/*
* Early RDS/IB was built to only bind to an address if there is an IPoIB
@@ -341,12 +397,19 @@ static void rds_ib_ic_info(struct socket *sock, unsigned int len,
* allowed to influence which paths have priority. We could call userspace
* asserting this policy "routing".
*/
-static int rds_ib_laddr_check(struct net *net, __be32 addr)
+static int rds_ib_laddr_check(struct net *net, const struct in6_addr *addr,
+ __u32 scope_id)
{
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;
+ isv4 = ipv6_addr_v4mapped(addr);
/* Create a CMA ID and try to bind it. This catches both
* IB and iWARP capable NICs.
*/
@@ -355,22 +418,66 @@ static int rds_ib_laddr_check(struct net *net, __be32 addr)
if (IS_ERR(cm_id))
return PTR_ERR(cm_id);
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = addr;
+ if (isv4) {
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_family = AF_INET;
+ 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;
+ sin6.sin6_scope_id = scope_id;
+ sa = (struct sockaddr *)&sin6;
+
+ /* XXX Do a special IPv6 link local address check here. The
+ * reason is that rdma_bind_addr() always succeeds with IPv6
+ * link local address regardless it is indeed configured in a
+ * system.
+ */
+ if (ipv6_addr_type(addr) & IPV6_ADDR_LINKLOCAL) {
+ struct net_device *dev;
+
+ 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) {
+ ret = -EADDRNOTAVAIL;
+ goto out;
+ }
+ if (!ipv6_chk_addr(&init_net, addr, dev, 1)) {
+ dev_put(dev);
+ ret = -EADDRNOTAVAIL;
+ goto out;
+ }
+ dev_put(dev);
+ }
+#else
+ ret = -EADDRNOTAVAIL;
+ goto out;
+#endif
+ }
/* rdma_bind_addr will only succeed for IB & iWARP devices */
- ret = rdma_bind_addr(cm_id, (struct sockaddr *)&sin);
+ ret = rdma_bind_addr(cm_id, sa);
/* due to this, we will claim to support iWARP devices unless we
check node_type. */
if (ret || !cm_id->device ||
cm_id->device->node_type != RDMA_NODE_IB_CA)
ret = -EADDRNOTAVAIL;
- rdsdebug("addr %pI4 ret %d node type %d\n",
- &addr, ret,
- cm_id->device ? cm_id->device->node_type : -1);
+ rdsdebug("addr %pI6c%%%u ret %d node type %d\n",
+ addr, scope_id, ret,
+ cm_id->device ? cm_id->device->node_type : -1);
+out:
rdma_destroy_id(cm_id);
return ret;
@@ -401,6 +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();
@@ -462,6 +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;
@@ -476,4 +589,3 @@ out:
}
MODULE_LICENSE("GPL");
-
diff --git a/net/rds/ib.h b/net/rds/ib.h
index a6f4d7d68e95..73427ff439f9 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -57,16 +57,44 @@ struct rds_ib_refill_cache {
struct list_head *ready;
};
+/* This is the common structure for the IB private data exchange in setting up
+ * an RDS connection. The exchange is different for IPv4 and IPv6 connections.
+ * The reason is that the address size is different and the addresses
+ * exchanged are in the beginning of the structure. Hence it is not possible
+ * for interoperability if same structure is used.
+ */
+struct rds_ib_conn_priv_cmn {
+ u8 ricpc_protocol_major;
+ u8 ricpc_protocol_minor;
+ __be16 ricpc_protocol_minor_mask; /* bitmask */
+ __be32 ricpc_reserved1;
+ __be64 ricpc_ack_seq;
+ __be32 ricpc_credit; /* non-zero enables flow ctl */
+};
+
struct rds_ib_connect_private {
/* Add new fields at the end, and don't permute existing fields. */
- __be32 dp_saddr;
- __be32 dp_daddr;
- u8 dp_protocol_major;
- u8 dp_protocol_minor;
- __be16 dp_protocol_minor_mask; /* bitmask */
- __be32 dp_reserved1;
- __be64 dp_ack_seq;
- __be32 dp_credit; /* non-zero enables flow ctl */
+ __be32 dp_saddr;
+ __be32 dp_daddr;
+ struct rds_ib_conn_priv_cmn dp_cmn;
+};
+
+struct rds6_ib_connect_private {
+ /* Add new fields at the end, and don't permute existing fields. */
+ struct in6_addr dp_saddr;
+ struct in6_addr dp_daddr;
+ struct rds_ib_conn_priv_cmn dp_cmn;
+};
+
+#define dp_protocol_major dp_cmn.ricpc_protocol_major
+#define dp_protocol_minor dp_cmn.ricpc_protocol_minor
+#define dp_protocol_minor_mask dp_cmn.ricpc_protocol_minor_mask
+#define dp_ack_seq dp_cmn.ricpc_ack_seq
+#define dp_credit dp_cmn.ricpc_credit
+
+union rds_ib_conn_priv {
+ struct rds_ib_connect_private ricp_v4;
+ struct rds6_ib_connect_private ricp_v6;
};
struct rds_ib_send_work {
@@ -351,8 +379,8 @@ void rds_ib_listen_stop(void);
__printf(2, 3)
void __rds_ib_conn_error(struct rds_connection *conn, const char *, ...);
int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
- struct rdma_cm_event *event);
-int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id);
+ struct rdma_cm_event *event, bool isv6);
+int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id, bool isv6);
void rds_ib_cm_connect_complete(struct rds_connection *conn,
struct rdma_cm_event *event);
@@ -361,7 +389,8 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn,
__rds_ib_conn_error(conn, KERN_WARNING "RDS/IB: " fmt)
/* ib_rdma.c */
-int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr);
+int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev,
+ struct in6_addr *ipaddr);
void rds_ib_add_conn(struct rds_ib_device *rds_ibdev, struct rds_connection *conn);
void rds_ib_remove_conn(struct rds_ib_device *rds_ibdev, struct rds_connection *conn);
void rds_ib_destroy_nodev_conns(void);
@@ -371,7 +400,7 @@ void rds_ib_mr_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc);
int rds_ib_recv_init(void);
void rds_ib_recv_exit(void);
int rds_ib_recv_path(struct rds_conn_path *conn);
-int rds_ib_recv_alloc_caches(struct rds_ib_connection *ic);
+int rds_ib_recv_alloc_caches(struct rds_ib_connection *ic, gfp_t gfp);
void rds_ib_recv_free_caches(struct rds_ib_connection *ic);
void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp);
void rds_ib_inc_free(struct rds_incoming *inc);
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index f1684ae6abfd..bfbb31f0c7fd 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -35,6 +35,7 @@
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/ratelimit.h>
+#include <net/addrconf.h>
#include "rds_single_path.h"
#include "rds.h"
@@ -95,25 +96,45 @@ rds_ib_tune_rnr(struct rds_ib_connection *ic, struct ib_qp_attr *attr)
*/
void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_event *event)
{
- const struct rds_ib_connect_private *dp = NULL;
struct rds_ib_connection *ic = conn->c_transport_data;
+ const union rds_ib_conn_priv *dp = NULL;
struct ib_qp_attr qp_attr;
+ __be64 ack_seq = 0;
+ __be32 credit = 0;
+ u8 major = 0;
+ u8 minor = 0;
int err;
- if (event->param.conn.private_data_len >= sizeof(*dp)) {
- dp = event->param.conn.private_data;
-
- /* make sure it isn't empty data */
- if (dp->dp_protocol_major) {
- rds_ib_set_protocol(conn,
- RDS_PROTOCOL(dp->dp_protocol_major,
- dp->dp_protocol_minor));
- rds_ib_set_flow_control(conn, be32_to_cpu(dp->dp_credit));
+ dp = event->param.conn.private_data;
+ if (conn->c_isv6) {
+ if (event->param.conn.private_data_len >=
+ sizeof(struct rds6_ib_connect_private)) {
+ major = dp->ricp_v6.dp_protocol_major;
+ minor = dp->ricp_v6.dp_protocol_minor;
+ credit = dp->ricp_v6.dp_credit;
+ /* dp structure start is not guaranteed to be 8 bytes
+ * aligned. Since dp_ack_seq is 64-bit extended load
+ * operations can be used so go through get_unaligned
+ * to avoid unaligned errors.
+ */
+ ack_seq = get_unaligned(&dp->ricp_v6.dp_ack_seq);
}
+ } else if (event->param.conn.private_data_len >=
+ sizeof(struct rds_ib_connect_private)) {
+ major = dp->ricp_v4.dp_protocol_major;
+ minor = dp->ricp_v4.dp_protocol_minor;
+ credit = dp->ricp_v4.dp_credit;
+ ack_seq = get_unaligned(&dp->ricp_v4.dp_ack_seq);
+ }
+
+ /* make sure it isn't empty data */
+ if (major) {
+ rds_ib_set_protocol(conn, RDS_PROTOCOL(major, minor));
+ rds_ib_set_flow_control(conn, be32_to_cpu(credit));
}
if (conn->c_version < RDS_PROTOCOL(3, 1)) {
- pr_notice("RDS/IB: Connection <%pI4,%pI4> version %u.%u no longer supported\n",
+ pr_notice("RDS/IB: Connection <%pI6c,%pI6c> version %u.%u no longer supported\n",
&conn->c_laddr, &conn->c_faddr,
RDS_PROTOCOL_MAJOR(conn->c_version),
RDS_PROTOCOL_MINOR(conn->c_version));
@@ -121,7 +142,7 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
rds_conn_destroy(conn);
return;
} else {
- pr_notice("RDS/IB: %s conn connected <%pI4,%pI4> version %u.%u%s\n",
+ pr_notice("RDS/IB: %s conn connected <%pI6c,%pI6c> version %u.%u%s\n",
ic->i_active_side ? "Active" : "Passive",
&conn->c_laddr, &conn->c_faddr,
RDS_PROTOCOL_MAJOR(conn->c_version),
@@ -150,7 +171,7 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
printk(KERN_NOTICE "ib_modify_qp(IB_QP_STATE, RTS): err=%d\n", err);
/* update ib_device with this local ipaddr */
- err = rds_ib_update_ipaddr(ic->rds_ibdev, conn->c_laddr);
+ err = rds_ib_update_ipaddr(ic->rds_ibdev, &conn->c_laddr);
if (err)
printk(KERN_ERR "rds_ib_update_ipaddr failed (%d)\n",
err);
@@ -158,14 +179,8 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
/* If the peer gave us the last packet it saw, process this as if
* we had received a regular ACK. */
if (dp) {
- /* dp structure start is not guaranteed to be 8 bytes aligned.
- * Since dp_ack_seq is 64-bit extended load operations can be
- * used so go through get_unaligned to avoid unaligned errors.
- */
- __be64 dp_ack_seq = get_unaligned(&dp->dp_ack_seq);
-
- if (dp_ack_seq)
- rds_send_drop_acked(conn, be64_to_cpu(dp_ack_seq),
+ if (ack_seq)
+ rds_send_drop_acked(conn, be64_to_cpu(ack_seq),
NULL);
}
@@ -173,11 +188,12 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
}
static void rds_ib_cm_fill_conn_param(struct rds_connection *conn,
- struct rdma_conn_param *conn_param,
- struct rds_ib_connect_private *dp,
- u32 protocol_version,
- u32 max_responder_resources,
- u32 max_initiator_depth)
+ struct rdma_conn_param *conn_param,
+ union rds_ib_conn_priv *dp,
+ u32 protocol_version,
+ u32 max_responder_resources,
+ u32 max_initiator_depth,
+ bool isv6)
{
struct rds_ib_connection *ic = conn->c_transport_data;
struct rds_ib_device *rds_ibdev = ic->rds_ibdev;
@@ -193,24 +209,49 @@ static void rds_ib_cm_fill_conn_param(struct rds_connection *conn,
if (dp) {
memset(dp, 0, sizeof(*dp));
- dp->dp_saddr = conn->c_laddr;
- dp->dp_daddr = conn->c_faddr;
- dp->dp_protocol_major = RDS_PROTOCOL_MAJOR(protocol_version);
- dp->dp_protocol_minor = RDS_PROTOCOL_MINOR(protocol_version);
- dp->dp_protocol_minor_mask = cpu_to_be16(RDS_IB_SUPPORTED_PROTOCOLS);
- dp->dp_ack_seq = cpu_to_be64(rds_ib_piggyb_ack(ic));
+ if (isv6) {
+ dp->ricp_v6.dp_saddr = conn->c_laddr;
+ dp->ricp_v6.dp_daddr = conn->c_faddr;
+ dp->ricp_v6.dp_protocol_major =
+ RDS_PROTOCOL_MAJOR(protocol_version);
+ dp->ricp_v6.dp_protocol_minor =
+ RDS_PROTOCOL_MINOR(protocol_version);
+ dp->ricp_v6.dp_protocol_minor_mask =
+ cpu_to_be16(RDS_IB_SUPPORTED_PROTOCOLS);
+ dp->ricp_v6.dp_ack_seq =
+ cpu_to_be64(rds_ib_piggyb_ack(ic));
+
+ conn_param->private_data = &dp->ricp_v6;
+ conn_param->private_data_len = sizeof(dp->ricp_v6);
+ } else {
+ dp->ricp_v4.dp_saddr = conn->c_laddr.s6_addr32[3];
+ dp->ricp_v4.dp_daddr = conn->c_faddr.s6_addr32[3];
+ dp->ricp_v4.dp_protocol_major =
+ RDS_PROTOCOL_MAJOR(protocol_version);
+ dp->ricp_v4.dp_protocol_minor =
+ RDS_PROTOCOL_MINOR(protocol_version);
+ dp->ricp_v4.dp_protocol_minor_mask =
+ cpu_to_be16(RDS_IB_SUPPORTED_PROTOCOLS);
+ dp->ricp_v4.dp_ack_seq =
+ cpu_to_be64(rds_ib_piggyb_ack(ic));
+
+ conn_param->private_data = &dp->ricp_v4;
+ conn_param->private_data_len = sizeof(dp->ricp_v4);
+ }
/* Advertise flow control */
if (ic->i_flowctl) {
unsigned int credits;
- credits = IB_GET_POST_CREDITS(atomic_read(&ic->i_credits));
- dp->dp_credit = cpu_to_be32(credits);
- atomic_sub(IB_SET_POST_CREDITS(credits), &ic->i_credits);
+ credits = IB_GET_POST_CREDITS
+ (atomic_read(&ic->i_credits));
+ if (isv6)
+ dp->ricp_v6.dp_credit = cpu_to_be32(credits);
+ else
+ dp->ricp_v4.dp_credit = cpu_to_be32(credits);
+ atomic_sub(IB_SET_POST_CREDITS(credits),
+ &ic->i_credits);
}
-
- conn_param->private_data = dp;
- conn_param->private_data_len = sizeof(*dp);
}
}
@@ -349,7 +390,7 @@ static void rds_ib_qp_event_handler(struct ib_event *event, void *data)
break;
default:
rdsdebug("Fatal QP Event %u (%s) "
- "- connection %pI4->%pI4, reconnecting\n",
+ "- connection %pI6c->%pI6c, reconnecting\n",
event->event, ib_event_msg(event->event),
&conn->c_laddr, &conn->c_faddr);
rds_conn_drop(conn);
@@ -580,11 +621,13 @@ out:
return ret;
}
-static u32 rds_ib_protocol_compatible(struct rdma_cm_event *event)
+static u32 rds_ib_protocol_compatible(struct rdma_cm_event *event, bool isv6)
{
- const struct rds_ib_connect_private *dp = event->param.conn.private_data;
- u16 common;
+ const union rds_ib_conn_priv *dp = event->param.conn.private_data;
+ u8 data_len, major, minor;
u32 version = 0;
+ __be16 mask;
+ u16 common;
/*
* rdma_cm private data is odd - when there is any private data in the
@@ -603,51 +646,140 @@ static u32 rds_ib_protocol_compatible(struct rdma_cm_event *event)
return 0;
}
+ if (isv6) {
+ data_len = sizeof(struct rds6_ib_connect_private);
+ major = dp->ricp_v6.dp_protocol_major;
+ minor = dp->ricp_v6.dp_protocol_minor;
+ mask = dp->ricp_v6.dp_protocol_minor_mask;
+ } else {
+ data_len = sizeof(struct rds_ib_connect_private);
+ major = dp->ricp_v4.dp_protocol_major;
+ minor = dp->ricp_v4.dp_protocol_minor;
+ mask = dp->ricp_v4.dp_protocol_minor_mask;
+ }
+
/* Even if len is crap *now* I still want to check it. -ASG */
- if (event->param.conn.private_data_len < sizeof (*dp) ||
- dp->dp_protocol_major == 0)
+ if (event->param.conn.private_data_len < data_len || major == 0)
return RDS_PROTOCOL_3_0;
- common = be16_to_cpu(dp->dp_protocol_minor_mask) & RDS_IB_SUPPORTED_PROTOCOLS;
- if (dp->dp_protocol_major == 3 && common) {
+ common = be16_to_cpu(mask) & RDS_IB_SUPPORTED_PROTOCOLS;
+ if (major == 3 && common) {
version = RDS_PROTOCOL_3_0;
while ((common >>= 1) != 0)
version++;
- } else
- printk_ratelimited(KERN_NOTICE "RDS: Connection from %pI4 using incompatible protocol version %u.%u\n",
- &dp->dp_saddr,
- dp->dp_protocol_major,
- dp->dp_protocol_minor);
+ } else {
+ if (isv6)
+ printk_ratelimited(KERN_NOTICE "RDS: Connection from %pI6c using incompatible protocol version %u.%u\n",
+ &dp->ricp_v6.dp_saddr, major, minor);
+ else
+ printk_ratelimited(KERN_NOTICE "RDS: Connection from %pI4 using incompatible protocol version %u.%u\n",
+ &dp->ricp_v4.dp_saddr, major, minor);
+ }
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
+ * the request is using a link local address.
+ *
+ * Note one problem in this search. It is possible that two interfaces have
+ * the same link local address. Unfortunately, this cannot be solved unless
+ * the underlying layer gives us the interface which an incoming RDMA connect
+ * request comes from.
+ */
+static u32 __rds_find_ifindex(struct net *net, const struct in6_addr *addr)
+{
+ struct net_device *dev;
+ int idx = 0;
+
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev) {
+ if (ipv6_chk_addr(net, addr, dev, 1)) {
+ idx = dev->ifindex;
+ break;
+ }
+ }
+ rcu_read_unlock();
+
+ return idx;
+}
+#endif
+
int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
- struct rdma_cm_event *event)
+ struct rdma_cm_event *event, bool isv6)
{
__be64 lguid = cm_id->route.path_rec->sgid.global.interface_id;
__be64 fguid = cm_id->route.path_rec->dgid.global.interface_id;
- const struct rds_ib_connect_private *dp = event->param.conn.private_data;
- struct rds_ib_connect_private dp_rep;
+ const struct rds_ib_conn_priv_cmn *dp_cmn;
struct rds_connection *conn = NULL;
struct rds_ib_connection *ic = NULL;
struct rdma_conn_param conn_param;
+ const union rds_ib_conn_priv *dp;
+ union rds_ib_conn_priv dp_rep;
+ struct in6_addr s_mapped_addr;
+ struct in6_addr d_mapped_addr;
+ const struct in6_addr *saddr6;
+ const struct in6_addr *daddr6;
+ int destroy = 1;
+ u32 ifindex = 0;
u32 version;
- int err = 1, destroy = 1;
+ int err = 1;
/* Check whether the remote protocol version matches ours. */
- version = rds_ib_protocol_compatible(event);
+ version = rds_ib_protocol_compatible(event, isv6);
if (!version)
goto out;
- rdsdebug("saddr %pI4 daddr %pI4 RDSv%u.%u lguid 0x%llx fguid "
- "0x%llx\n", &dp->dp_saddr, &dp->dp_daddr,
+ 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;
+ /* If either address is link local, need to find the
+ * interface index in order to create a proper RDS
+ * connection.
+ */
+ if (ipv6_addr_type(daddr6) & IPV6_ADDR_LINKLOCAL) {
+ /* Using init_net for now .. */
+ ifindex = __rds_find_ifindex(&init_net, daddr6);
+ /* No index found... Need to bail out. */
+ if (ifindex == 0) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ } else if (ipv6_addr_type(saddr6) & IPV6_ADDR_LINKLOCAL) {
+ /* Use our address to find the correct index. */
+ ifindex = __rds_find_ifindex(&init_net, daddr6);
+ /* No index found... Need to bail out. */
+ if (ifindex == 0) {
+ err = -EOPNOTSUPP;
+ 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);
+ ipv6_addr_set_v4mapped(dp->ricp_v4.dp_daddr, &d_mapped_addr);
+ saddr6 = &s_mapped_addr;
+ daddr6 = &d_mapped_addr;
+ }
+
+ rdsdebug("saddr %pI6c daddr %pI6c RDSv%u.%u lguid 0x%llx fguid "
+ "0x%llx\n", saddr6, daddr6,
RDS_PROTOCOL_MAJOR(version), RDS_PROTOCOL_MINOR(version),
(unsigned long long)be64_to_cpu(lguid),
(unsigned long long)be64_to_cpu(fguid));
/* RDS/IB is not currently netns aware, thus init_net */
- conn = rds_conn_create(&init_net, dp->dp_daddr, dp->dp_saddr,
- &rds_ib_transport, GFP_KERNEL);
+ conn = rds_conn_create(&init_net, daddr6, saddr6,
+ &rds_ib_transport, GFP_KERNEL, ifindex);
if (IS_ERR(conn)) {
rdsdebug("rds_conn_create failed (%ld)\n", PTR_ERR(conn));
conn = NULL;
@@ -678,12 +810,13 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
ic = conn->c_transport_data;
rds_ib_set_protocol(conn, version);
- rds_ib_set_flow_control(conn, be32_to_cpu(dp->dp_credit));
+ rds_ib_set_flow_control(conn, be32_to_cpu(dp_cmn->ricpc_credit));
/* If the peer gave us the last packet it saw, process this as if
* we had received a regular ACK. */
- if (dp->dp_ack_seq)
- rds_send_drop_acked(conn, be64_to_cpu(dp->dp_ack_seq), NULL);
+ if (dp_cmn->ricpc_ack_seq)
+ rds_send_drop_acked(conn, be64_to_cpu(dp_cmn->ricpc_ack_seq),
+ NULL);
BUG_ON(cm_id->context);
BUG_ON(ic->i_cm_id);
@@ -702,8 +835,8 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
}
rds_ib_cm_fill_conn_param(conn, &conn_param, &dp_rep, version,
- event->param.conn.responder_resources,
- event->param.conn.initiator_depth);
+ event->param.conn.responder_resources,
+ event->param.conn.initiator_depth, isv6);
/* rdma_accept() calls rdma_reject() internally if it fails */
if (rdma_accept(cm_id, &conn_param))
@@ -718,12 +851,12 @@ out:
}
-int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id)
+int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id, bool isv6)
{
struct rds_connection *conn = cm_id->context;
struct rds_ib_connection *ic = conn->c_transport_data;
struct rdma_conn_param conn_param;
- struct rds_ib_connect_private dp;
+ union rds_ib_conn_priv dp;
int ret;
/* If the peer doesn't do protocol negotiation, we must
@@ -738,7 +871,7 @@ int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id)
}
rds_ib_cm_fill_conn_param(conn, &conn_param, &dp, RDS_PROTOCOL_VERSION,
- UINT_MAX, UINT_MAX);
+ UINT_MAX, UINT_MAX, isv6);
ret = rdma_connect(cm_id, &conn_param);
if (ret)
rds_ib_conn_error(conn, "rdma_connect failed (%d)\n", ret);
@@ -758,13 +891,22 @@ out:
int rds_ib_conn_path_connect(struct rds_conn_path *cp)
{
struct rds_connection *conn = cp->cp_conn;
- struct rds_ib_connection *ic = conn->c_transport_data;
- struct sockaddr_in src, dest;
+ struct sockaddr_storage src, dest;
+ rdma_cm_event_handler handler;
+ struct rds_ib_connection *ic;
int ret;
+ ic = conn->c_transport_data;
+
/* XXX I wonder what affect the port space has */
/* delegate cm event handler to rdma_transport */
- ic->i_cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, conn,
+#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);
if (IS_ERR(ic->i_cm_id)) {
ret = PTR_ERR(ic->i_cm_id);
@@ -775,13 +917,33 @@ int rds_ib_conn_path_connect(struct rds_conn_path *cp)
rdsdebug("created cm id %p for conn %p\n", ic->i_cm_id, conn);
- src.sin_family = AF_INET;
- src.sin_addr.s_addr = (__force u32)conn->c_laddr;
- src.sin_port = (__force u16)htons(0);
+ if (ipv6_addr_v4mapped(&conn->c_faddr)) {
+ struct sockaddr_in *sin;
+
+ sin = (struct sockaddr_in *)&src;
+ sin->sin_family = AF_INET;
+ sin->sin_addr.s_addr = conn->c_laddr.s6_addr32[3];
+ sin->sin_port = 0;
- dest.sin_family = AF_INET;
- dest.sin_addr.s_addr = (__force u32)conn->c_faddr;
- dest.sin_port = (__force u16)htons(RDS_PORT);
+ sin = (struct sockaddr_in *)&dest;
+ sin->sin_family = AF_INET;
+ sin->sin_addr.s_addr = conn->c_faddr.s6_addr32[3];
+ sin->sin_port = htons(RDS_PORT);
+ } else {
+ struct sockaddr_in6 *sin6;
+
+ sin6 = (struct sockaddr_in6 *)&src;
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_addr = conn->c_laddr;
+ sin6->sin6_port = 0;
+ sin6->sin6_scope_id = conn->c_dev_if;
+
+ sin6 = (struct sockaddr_in6 *)&dest;
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_addr = conn->c_faddr;
+ sin6->sin6_port = htons(RDS_CM_PORT);
+ sin6->sin6_scope_id = conn->c_dev_if;
+ }
ret = rdma_resolve_addr(ic->i_cm_id, (struct sockaddr *)&src,
(struct sockaddr *)&dest,
@@ -949,7 +1111,7 @@ int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp)
if (!ic)
return -ENOMEM;
- ret = rds_ib_recv_alloc_caches(ic);
+ ret = rds_ib_recv_alloc_caches(ic, gfp);
if (ret) {
kfree(ic);
return ret;
diff --git a/net/rds/ib_frmr.c b/net/rds/ib_frmr.c
index b371cf08b1fc..6431a023ac89 100644
--- a/net/rds/ib_frmr.c
+++ b/net/rds/ib_frmr.c
@@ -61,6 +61,7 @@ static struct rds_ib_mr *rds_ib_alloc_frmr(struct rds_ib_device *rds_ibdev,
pool->fmr_attr.max_pages);
if (IS_ERR(frmr->mr)) {
pr_warn("RDS/IB: %s failed to allocate MR", __func__);
+ err = PTR_ERR(frmr->mr);
goto out_no_cigar;
}
diff --git a/net/rds/ib_mr.h b/net/rds/ib_mr.h
index 655f01d427fe..5da12c248431 100644
--- a/net/rds/ib_mr.h
+++ b/net/rds/ib_mr.h
@@ -113,6 +113,8 @@ struct rds_ib_mr_pool *rds_ib_create_mr_pool(struct rds_ib_device *rds_dev,
int npages);
void rds_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
struct rds_info_rdma_connection *iinfo);
+void rds6_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
+ struct rds6_info_rdma_connection *iinfo6);
void rds_ib_destroy_mr_pool(struct rds_ib_mr_pool *);
void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
struct rds_sock *rs, u32 *key_ret,
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 2e49a40a5e11..63c8d107adcf 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -100,18 +100,19 @@ static void rds_ib_remove_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr)
kfree_rcu(to_free, rcu);
}
-int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr)
+int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev,
+ struct in6_addr *ipaddr)
{
struct rds_ib_device *rds_ibdev_old;
- rds_ibdev_old = rds_ib_get_device(ipaddr);
+ rds_ibdev_old = rds_ib_get_device(ipaddr->s6_addr32[3]);
if (!rds_ibdev_old)
- return rds_ib_add_ipaddr(rds_ibdev, ipaddr);
+ return rds_ib_add_ipaddr(rds_ibdev, ipaddr->s6_addr32[3]);
if (rds_ibdev_old != rds_ibdev) {
- rds_ib_remove_ipaddr(rds_ibdev_old, ipaddr);
+ rds_ib_remove_ipaddr(rds_ibdev_old, ipaddr->s6_addr32[3]);
rds_ib_dev_put(rds_ibdev_old);
- return rds_ib_add_ipaddr(rds_ibdev, ipaddr);
+ return rds_ib_add_ipaddr(rds_ibdev, ipaddr->s6_addr32[3]);
}
rds_ib_dev_put(rds_ibdev_old);
@@ -179,6 +180,17 @@ 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)
+{
+ struct rds_ib_mr_pool *pool_1m = rds_ibdev->mr_1m_pool;
+
+ 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)
{
struct rds_ib_mr *ibmr = NULL;
@@ -545,7 +557,7 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
struct rds_ib_connection *ic = NULL;
int ret;
- rds_ibdev = rds_ib_get_device(rs->rs_bound_addr);
+ rds_ibdev = rds_ib_get_device(rs->rs_bound_addr.s6_addr32[3]);
if (!rds_ibdev) {
ret = -ENODEV;
goto out;
diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 4c5a937304b2..2f16146e4ec9 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -98,12 +98,12 @@ static void rds_ib_cache_xfer_to_ready(struct rds_ib_refill_cache *cache)
}
}
-static int rds_ib_recv_alloc_cache(struct rds_ib_refill_cache *cache)
+static int rds_ib_recv_alloc_cache(struct rds_ib_refill_cache *cache, gfp_t gfp)
{
struct rds_ib_cache_head *head;
int cpu;
- cache->percpu = alloc_percpu(struct rds_ib_cache_head);
+ cache->percpu = alloc_percpu_gfp(struct rds_ib_cache_head, gfp);
if (!cache->percpu)
return -ENOMEM;
@@ -118,13 +118,13 @@ static int rds_ib_recv_alloc_cache(struct rds_ib_refill_cache *cache)
return 0;
}
-int rds_ib_recv_alloc_caches(struct rds_ib_connection *ic)
+int rds_ib_recv_alloc_caches(struct rds_ib_connection *ic, gfp_t gfp)
{
int ret;
- ret = rds_ib_recv_alloc_cache(&ic->i_cache_incs);
+ ret = rds_ib_recv_alloc_cache(&ic->i_cache_incs, gfp);
if (!ret) {
- ret = rds_ib_recv_alloc_cache(&ic->i_cache_frags);
+ ret = rds_ib_recv_alloc_cache(&ic->i_cache_frags, gfp);
if (ret)
free_percpu(ic->i_cache_incs.percpu);
}
@@ -266,7 +266,7 @@ static struct rds_ib_incoming *rds_ib_refill_one_inc(struct rds_ib_connection *i
rds_ib_stats_inc(s_ib_rx_total_incs);
}
INIT_LIST_HEAD(&ibinc->ii_frags);
- rds_inc_init(&ibinc->ii_inc, ic->conn, ic->conn->c_faddr);
+ rds_inc_init(&ibinc->ii_inc, ic->conn, &ic->conn->c_faddr);
return ibinc;
}
@@ -376,8 +376,6 @@ static void release_refill(struct rds_connection *conn)
* This tries to allocate and post unused work requests after making sure that
* they have all the allocations they need to queue received fragments into
* sockets.
- *
- * -1 is returned if posting fails due to temporary resource exhaustion.
*/
void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp)
{
@@ -419,7 +417,7 @@ void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp)
ret = ib_post_recv(ic->i_cm_id->qp, &recv->r_wr, NULL);
if (ret) {
rds_ib_conn_error(conn, "recv post on "
- "%pI4 returned %d, disconnecting and "
+ "%pI6c returned %d, disconnecting and "
"reconnecting\n", &conn->c_faddr,
ret);
break;
@@ -848,7 +846,7 @@ static void rds_ib_process_recv(struct rds_connection *conn,
if (data_len < sizeof(struct rds_header)) {
rds_ib_conn_error(conn, "incoming message "
- "from %pI4 didn't include a "
+ "from %pI6c didn't include a "
"header, disconnecting and "
"reconnecting\n",
&conn->c_faddr);
@@ -861,7 +859,7 @@ static void rds_ib_process_recv(struct rds_connection *conn,
/* Validate the checksum. */
if (!rds_message_verify_checksum(ihdr)) {
rds_ib_conn_error(conn, "incoming message "
- "from %pI4 has corrupted header - "
+ "from %pI6c has corrupted header - "
"forcing a reconnect\n",
&conn->c_faddr);
rds_stats_inc(s_recv_drop_bad_checksum);
@@ -941,10 +939,10 @@ static void rds_ib_process_recv(struct rds_connection *conn,
ic->i_recv_data_rem = 0;
ic->i_ibinc = NULL;
- if (ibinc->ii_inc.i_hdr.h_flags == RDS_FLAG_CONG_BITMAP)
+ if (ibinc->ii_inc.i_hdr.h_flags == RDS_FLAG_CONG_BITMAP) {
rds_ib_cong_recv(conn, ibinc);
- else {
- rds_recv_incoming(conn, conn->c_faddr, conn->c_laddr,
+ } else {
+ rds_recv_incoming(conn, &conn->c_faddr, &conn->c_laddr,
&ibinc->ii_inc, GFP_ATOMIC);
state->ack_next = be64_to_cpu(hdr->h_sequence);
state->ack_next_valid = 1;
@@ -988,7 +986,7 @@ void rds_ib_recv_cqe_handler(struct rds_ib_connection *ic,
} else {
/* We expect errors as the qp is drained during shutdown */
if (rds_conn_up(conn) || rds_conn_connecting(conn))
- rds_ib_conn_error(conn, "recv completion on <%pI4,%pI4> had status %u (%s), disconnecting and reconnecting\n",
+ rds_ib_conn_error(conn, "recv completion on <%pI6c,%pI6c> had status %u (%s), disconnecting and reconnecting\n",
&conn->c_laddr, &conn->c_faddr,
wc->status,
ib_wc_status_msg(wc->status));
@@ -1023,7 +1021,6 @@ int rds_ib_recv_path(struct rds_conn_path *cp)
{
struct rds_connection *conn = cp->cp_conn;
struct rds_ib_connection *ic = conn->c_transport_data;
- int ret = 0;
rdsdebug("conn %p\n", conn);
if (rds_conn_up(conn)) {
@@ -1032,7 +1029,7 @@ int rds_ib_recv_path(struct rds_conn_path *cp)
rds_ib_stats_inc(s_ib_rx_refill_from_thread);
}
- return ret;
+ return 0;
}
int rds_ib_recv_init(void)
diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c
index 8ac80c1b051e..2dcb555e6350 100644
--- a/net/rds/ib_send.c
+++ b/net/rds/ib_send.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -305,7 +305,7 @@ void rds_ib_send_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc)
/* We expect errors as the qp is drained during shutdown */
if (wc->status != IB_WC_SUCCESS && rds_conn_up(conn)) {
- rds_ib_conn_error(conn, "send completion on <%pI4,%pI4> had status %u (%s), disconnecting and reconnecting\n",
+ rds_ib_conn_error(conn, "send completion on <%pI6c,%pI6c> had status %u (%s), disconnecting and reconnecting\n",
&conn->c_laddr, &conn->c_faddr, wc->status,
ib_wc_status_msg(wc->status));
}
@@ -730,7 +730,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm,
first, &first->s_wr, ret, failed_wr);
BUG_ON(failed_wr != &first->s_wr);
if (ret) {
- printk(KERN_WARNING "RDS/IB: ib_post_send to %pI4 "
+ printk(KERN_WARNING "RDS/IB: ib_post_send to %pI6c "
"returned %d\n", &conn->c_faddr, ret);
rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc);
rds_ib_sub_signaled(ic, nr_sig);
@@ -759,14 +759,11 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op)
struct rds_ib_connection *ic = conn->c_transport_data;
struct rds_ib_send_work *send = NULL;
const struct ib_send_wr *failed_wr;
- struct rds_ib_device *rds_ibdev;
u32 pos;
u32 work_alloc;
int ret;
int nr_sig = 0;
- rds_ibdev = ib_get_client_data(ic->i_cm_id->device, &rds_ib_client);
-
work_alloc = rds_ib_ring_alloc(&ic->i_send_ring, 1, &pos);
if (work_alloc != 1) {
rds_ib_stats_inc(s_ib_tx_ring_full);
@@ -827,7 +824,7 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op)
send, &send->s_atomic_wr, ret, failed_wr);
BUG_ON(failed_wr != &send->s_atomic_wr.wr);
if (ret) {
- printk(KERN_WARNING "RDS/IB: atomic ib_post_send to %pI4 "
+ printk(KERN_WARNING "RDS/IB: atomic ib_post_send to %pI6c "
"returned %d\n", &conn->c_faddr, ret);
rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc);
rds_ib_sub_signaled(ic, nr_sig);
@@ -967,7 +964,7 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
first, &first->s_rdma_wr.wr, ret, failed_wr);
BUG_ON(failed_wr != &first->s_rdma_wr.wr);
if (ret) {
- printk(KERN_WARNING "RDS/IB: rdma ib_post_send to %pI4 "
+ printk(KERN_WARNING "RDS/IB: rdma ib_post_send to %pI6c "
"returned %d\n", &conn->c_faddr, ret);
rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc);
rds_ib_sub_signaled(ic, nr_sig);
diff --git a/net/rds/loop.c b/net/rds/loop.c
index feea1f96ee2a..1d73ad79c847 100644
--- a/net/rds/loop.c
+++ b/net/rds/loop.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -35,6 +35,7 @@
#include <linux/in.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
+#include <linux/ipv6.h>
#include "rds_single_path.h"
#include "rds.h"
@@ -88,11 +89,11 @@ static int rds_loop_xmit(struct rds_connection *conn, struct rds_message *rm,
BUG_ON(hdr_off || sg || off);
- rds_inc_init(&rm->m_inc, conn, conn->c_laddr);
+ rds_inc_init(&rm->m_inc, conn, &conn->c_laddr);
/* For the embedded inc. Matching put is in loop_inc_free() */
rds_message_addref(rm);
- rds_recv_incoming(conn, conn->c_laddr, conn->c_faddr, &rm->m_inc,
+ rds_recv_incoming(conn, &conn->c_laddr, &conn->c_faddr, &rm->m_inc,
GFP_KERNEL);
rds_send_drop_acked(conn, be64_to_cpu(rm->m_inc.i_hdr.h_sequence),
diff --git a/net/rds/message.c b/net/rds/message.c
index a35f76971984..4b00b1152a5f 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -514,4 +514,3 @@ void rds_message_unmapped(struct rds_message *rm)
wake_up_interruptible(&rm->m_flush_wait);
}
EXPORT_SYMBOL_GPL(rds_message_unmapped);
-
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 80920e47f2c7..98237feb607a 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007 Oracle. All rights reserved.
+ * Copyright (c) 2007, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -184,7 +184,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
long i;
int ret;
- if (rs->rs_bound_addr == 0 || !rs->rs_transport) {
+ if (ipv6_addr_any(&rs->rs_bound_addr) || !rs->rs_transport) {
ret = -ENOTCONN; /* XXX not a great errno */
goto out;
}
@@ -576,7 +576,7 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
args = CMSG_DATA(cmsg);
- if (rs->rs_bound_addr == 0) {
+ if (ipv6_addr_any(&rs->rs_bound_addr)) {
ret = -ENOTCONN; /* XXX not a great errno */
goto out_ret;
}
diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c
index fc59821f0a27..6b0f57c83a2a 100644
--- a/net/rds/rdma_transport.c
+++ b/net/rds/rdma_transport.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2009 Oracle. All rights reserved.
+ * Copyright (c) 2009, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -37,10 +37,15 @@
#include "rdma_transport.h"
#include "ib.h"
+/* 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
-int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
- struct rdma_cm_event *event)
+static int rds_rdma_cm_event_handler_cmn(struct rdma_cm_id *cm_id,
+ struct rdma_cm_event *event,
+ bool isv6)
{
/* this can be null in the listening path */
struct rds_connection *conn = cm_id->context;
@@ -72,7 +77,7 @@ int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
switch (event->event) {
case RDMA_CM_EVENT_CONNECT_REQUEST:
- ret = trans->cm_handle_connect(cm_id, event);
+ ret = trans->cm_handle_connect(cm_id, event, isv6);
break;
case RDMA_CM_EVENT_ADDR_RESOLVED:
@@ -90,7 +95,7 @@ int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
ibic = conn->c_transport_data;
if (ibic && ibic->i_cm_id == cm_id)
- ret = trans->cm_initiate_connect(cm_id);
+ ret = trans->cm_initiate_connect(cm_id, isv6);
else
rds_conn_drop(conn);
}
@@ -116,14 +121,14 @@ int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
case RDMA_CM_EVENT_DISCONNECTED:
rdsdebug("DISCONNECT event - dropping connection "
- "%pI4->%pI4\n", &conn->c_laddr,
+ "%pI6c->%pI6c\n", &conn->c_laddr,
&conn->c_faddr);
rds_conn_drop(conn);
break;
case RDMA_CM_EVENT_TIMEWAIT_EXIT:
if (conn) {
- pr_info("RDS: RDMA_CM_EVENT_TIMEWAIT_EXIT event: dropping connection %pI4->%pI4\n",
+ pr_info("RDS: RDMA_CM_EVENT_TIMEWAIT_EXIT event: dropping connection %pI6c->%pI6c\n",
&conn->c_laddr, &conn->c_faddr);
rds_conn_drop(conn);
}
@@ -146,13 +151,28 @@ out:
return ret;
}
-static int rds_rdma_listen_init(void)
+int rds_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, 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,
+ struct rdma_cm_id **ret_cm_id)
{
- struct sockaddr_in sin;
struct rdma_cm_id *cm_id;
int ret;
- cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, NULL,
+ cm_id = rdma_create_id(&init_net, handler, NULL,
RDMA_PS_TCP, IB_QPT_RC);
if (IS_ERR(cm_id)) {
ret = PTR_ERR(cm_id);
@@ -161,15 +181,11 @@ static int rds_rdma_listen_init(void)
return ret;
}
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = (__force u32)htonl(INADDR_ANY);
- sin.sin_port = (__force u16)htons(RDS_PORT);
-
/*
* XXX I bet this binds the cm_id to a device. If we want to support
* fail-over we'll have to take this into consideration.
*/
- ret = rdma_bind_addr(cm_id, (struct sockaddr *)&sin);
+ ret = rdma_bind_addr(cm_id, sa);
if (ret) {
printk(KERN_ERR "RDS/RDMA: failed to setup listener, "
"rdma_bind_addr() returned %d\n", ret);
@@ -185,7 +201,7 @@ static int rds_rdma_listen_init(void)
rdsdebug("cm %p listening on port %u\n", cm_id, RDS_PORT);
- rds_rdma_listen_id = cm_id;
+ *ret_cm_id = cm_id;
cm_id = NULL;
out:
if (cm_id)
@@ -193,6 +209,45 @@ out:
return ret;
}
+/* Initialize the RDS RDMA listeners. We create two listeners for
+ * compatibility reason. The one on RDS_PORT is used for IPv4
+ * requests only. The one on RDS_CM_PORT is used for IPv6 requests
+ * only. So only IPv6 enabled RDS module will communicate using this
+ * port.
+ */
+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;
+ sin.sin_addr.s_addr = htonl(INADDR_ANY);
+ sin.sin_port = htons(RDS_PORT);
+ ret = rds_rdma_listen_init_common(rds_rdma_cm_event_handler,
+ (struct sockaddr *)&sin,
+ &rds_rdma_listen_id);
+ 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);
+ sin6.sin6_scope_id = 0;
+ sin6.sin6_flowinfo = 0;
+ ret = rds_rdma_listen_init_common(rds6_rdma_cm_event_handler,
+ (struct sockaddr *)&sin6,
+ &rds6_rdma_listen_id);
+ /* 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;
+}
+
static void rds_rdma_listen_stop(void)
{
if (rds_rdma_listen_id) {
@@ -200,6 +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)
@@ -229,4 +291,3 @@ module_exit(rds_rdma_exit);
MODULE_AUTHOR("Oracle Corporation <rds-devel@oss.oracle.com>");
MODULE_DESCRIPTION("RDS: IB transport");
MODULE_LICENSE("Dual BSD/GPL");
-
diff --git a/net/rds/rdma_transport.h b/net/rds/rdma_transport.h
index d309c4430124..200d3134aaae 100644
--- a/net/rds/rdma_transport.h
+++ b/net/rds/rdma_transport.h
@@ -6,11 +6,16 @@
#include <rdma/rdma_cm.h>
#include "rds.h"
+/* RDMA_CM also uses 16385 as the listener port. */
+#define RDS_CM_PORT 16385
+
#define RDS_RDMA_RESOLVE_TIMEOUT_MS 5000
int rds_rdma_conn_connect(struct rds_connection *conn);
int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event);
+int rds6_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
+ struct rdma_cm_event *event);
/* from ib.c */
extern struct rds_transport rds_ib_transport;
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 60b3b787fbdb..c4dcf654d8fe 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -10,6 +10,7 @@
#include <linux/rds.h>
#include <linux/rhashtable.h>
#include <linux/refcount.h>
+#include <linux/in6.h>
#include "info.h"
@@ -23,11 +24,13 @@
#define RDS_PROTOCOL_MINOR(v) ((v) & 255)
#define RDS_PROTOCOL(maj, min) (((maj) << 8) | min)
-/*
- * XXX randomly chosen, but at least seems to be unused:
- * # 18464-18768 Unassigned
- * We should do better. We want a reserved port to discourage unpriv'ed
- * userspace from listening.
+/* The following ports, 16385, 18634, 18635, are registered with IANA as
+ * the ports to be used for RDS over TCP and UDP. Currently, only RDS over
+ * TCP and RDS over IB/RDMA are implemented. 18634 is the historical value
+ * used for the RDMA_CM listener port. RDS/TCP uses port 16385. After
+ * IPv6 work, RDMA_CM also uses 16385 as the listener port. 18634 is kept
+ * to ensure compatibility with older RDS modules. Those ports are defined
+ * in each transport's header file.
*/
#define RDS_PORT 18634
@@ -61,7 +64,7 @@ void rdsdebug(char *fmt, ...)
struct rds_cong_map {
struct rb_node m_rb_node;
- __be32 m_addr;
+ struct in6_addr m_addr;
wait_queue_head_t m_waitq;
struct list_head m_conn_list;
unsigned long m_page_addrs[RDS_CONG_MAP_PAGES];
@@ -136,11 +139,14 @@ struct rds_conn_path {
/* One rds_connection per RDS address pair */
struct rds_connection {
struct hlist_node c_hash_node;
- __be32 c_laddr;
- __be32 c_faddr;
+ struct in6_addr c_laddr;
+ struct in6_addr c_faddr;
+ int c_dev_if; /* ifindex used for this conn */
+ int c_bound_if; /* ifindex of c_laddr */
unsigned int c_loopback:1,
+ c_isv6:1,
c_ping_triggered:1,
- c_pad_to_32:30;
+ c_pad_to_32:29;
int c_npaths;
struct rds_connection *c_passive;
struct rds_transport *c_trans;
@@ -269,7 +275,7 @@ struct rds_incoming {
struct rds_conn_path *i_conn_path;
struct rds_header i_hdr;
unsigned long i_rx_jiffies;
- __be32 i_saddr;
+ struct in6_addr i_saddr;
rds_rdma_cookie_t i_rdma_cookie;
struct timeval i_rx_tstamp;
@@ -386,7 +392,7 @@ struct rds_message {
struct list_head m_conn_item;
struct rds_incoming m_inc;
u64 m_ack_seq;
- __be32 m_daddr;
+ struct in6_addr m_daddr;
unsigned long m_flags;
/* Never access m_rs without holding m_rs_lock.
@@ -521,7 +527,8 @@ struct rds_transport {
t_mp_capable:1;
unsigned int t_type;
- int (*laddr_check)(struct net *net, __be32 addr);
+ int (*laddr_check)(struct net *net, const struct in6_addr *addr,
+ __u32 scope_id);
int (*conn_alloc)(struct rds_connection *conn, gfp_t gfp);
void (*conn_free)(void *data);
int (*conn_path_connect)(struct rds_conn_path *cp);
@@ -537,8 +544,8 @@ struct rds_transport {
void (*inc_free)(struct rds_incoming *inc);
int (*cm_handle_connect)(struct rdma_cm_id *cm_id,
- struct rdma_cm_event *event);
- int (*cm_initiate_connect)(struct rdma_cm_id *cm_id);
+ struct rdma_cm_event *event, bool isv6);
+ int (*cm_initiate_connect)(struct rdma_cm_id *cm_id, bool isv6);
void (*cm_connect_complete)(struct rds_connection *conn,
struct rdma_cm_event *event);
@@ -554,6 +561,12 @@ struct rds_transport {
bool (*t_unloading)(struct rds_connection *conn);
};
+/* Bind hash table key length. It is the sum of the size of a struct
+ * in6_addr, a scope_id and a port.
+ */
+#define RDS_BOUND_KEY_LEN \
+ (sizeof(struct in6_addr) + sizeof(__u32) + sizeof(__be16))
+
struct rds_sock {
struct sock rs_sk;
@@ -565,10 +578,14 @@ struct rds_sock {
* support.
*/
struct rhash_head rs_bound_node;
- u64 rs_bound_key;
- __be32 rs_bound_addr;
- __be32 rs_conn_addr;
- __be16 rs_bound_port;
+ u8 rs_bound_key[RDS_BOUND_KEY_LEN];
+ struct sockaddr_in6 rs_bound_sin6;
+#define rs_bound_addr rs_bound_sin6.sin6_addr
+#define rs_bound_addr_v4 rs_bound_sin6.sin6_addr.s6_addr32[3]
+#define rs_bound_port rs_bound_sin6.sin6_port
+#define rs_bound_scope_id rs_bound_sin6.sin6_scope_id
+ struct in6_addr rs_conn_addr;
+#define rs_conn_addr_v4 rs_conn_addr.s6_addr32[3]
__be16 rs_conn_port;
struct rds_transport *rs_transport;
@@ -704,7 +721,8 @@ extern wait_queue_head_t rds_poll_waitq;
/* bind.c */
int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
void rds_remove_bound(struct rds_sock *rs);
-struct rds_sock *rds_find_bound(__be32 addr, __be16 port);
+struct rds_sock *rds_find_bound(const struct in6_addr *addr, __be16 port,
+ __u32 scope_id);
int rds_bind_lock_init(void);
void rds_bind_lock_destroy(void);
@@ -723,16 +741,20 @@ void rds_cong_remove_socket(struct rds_sock *);
void rds_cong_exit(void);
struct rds_message *rds_cong_update_alloc(struct rds_connection *conn);
-/* conn.c */
+/* connection.c */
extern u32 rds_gen_num;
int rds_conn_init(void);
void rds_conn_exit(void);
struct rds_connection *rds_conn_create(struct net *net,
- __be32 laddr, __be32 faddr,
- struct rds_transport *trans, gfp_t gfp);
+ const struct in6_addr *laddr,
+ const struct in6_addr *faddr,
+ struct rds_transport *trans, gfp_t gfp,
+ int dev_if);
struct rds_connection *rds_conn_create_outgoing(struct net *net,
- __be32 laddr, __be32 faddr,
- struct rds_transport *trans, gfp_t gfp);
+ const struct in6_addr *laddr,
+ const struct in6_addr *faddr,
+ struct rds_transport *trans,
+ gfp_t gfp, int dev_if);
void rds_conn_shutdown(struct rds_conn_path *cpath);
void rds_conn_destroy(struct rds_connection *conn);
void rds_conn_drop(struct rds_connection *conn);
@@ -843,11 +865,12 @@ void rds_page_exit(void);
/* recv.c */
void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
- __be32 saddr);
+ struct in6_addr *saddr);
void rds_inc_path_init(struct rds_incoming *inc, struct rds_conn_path *conn,
- __be32 saddr);
+ struct in6_addr *saddr);
void rds_inc_put(struct rds_incoming *inc);
-void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
+void rds_recv_incoming(struct rds_connection *conn, struct in6_addr *saddr,
+ struct in6_addr *daddr,
struct rds_incoming *inc, gfp_t gfp);
int rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
int msg_flags);
@@ -856,13 +879,17 @@ int rds_notify_queue_get(struct rds_sock *rs, struct msghdr *msg);
void rds_inc_info_copy(struct rds_incoming *inc,
struct rds_info_iterator *iter,
__be32 saddr, __be32 daddr, int flip);
+void rds6_inc_info_copy(struct rds_incoming *inc,
+ struct rds_info_iterator *iter,
+ struct in6_addr *saddr, struct in6_addr *daddr,
+ int flip);
/* send.c */
int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len);
void rds_send_path_reset(struct rds_conn_path *conn);
int rds_send_xmit(struct rds_conn_path *cp);
struct sockaddr_in;
-void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in *dest);
+void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in6 *dest);
typedef int (*is_acked_func)(struct rds_message *rm, uint64_t ack);
void rds_send_drop_acked(struct rds_connection *conn, u64 ack,
is_acked_func is_acked);
@@ -949,11 +976,14 @@ void rds_send_worker(struct work_struct *);
void rds_recv_worker(struct work_struct *);
void rds_connect_path_complete(struct rds_conn_path *conn, int curr);
void rds_connect_complete(struct rds_connection *conn);
+int rds_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2);
/* transport.c */
void rds_trans_register(struct rds_transport *trans);
void rds_trans_unregister(struct rds_transport *trans);
-struct rds_transport *rds_trans_get_preferred(struct net *net, __be32 addr);
+struct rds_transport *rds_trans_get_preferred(struct net *net,
+ const struct in6_addr *addr,
+ __u32 scope_id);
void rds_trans_put(struct rds_transport *trans);
unsigned int rds_trans_stats_info_copy(struct rds_info_iterator *iter,
unsigned int avail);
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 192ac6f78ded..504cd6bcc54c 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -41,14 +41,14 @@
#include "rds.h"
void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
- __be32 saddr)
+ struct in6_addr *saddr)
{
int i;
refcount_set(&inc->i_refcount, 1);
INIT_LIST_HEAD(&inc->i_item);
inc->i_conn = conn;
- inc->i_saddr = saddr;
+ inc->i_saddr = *saddr;
inc->i_rdma_cookie = 0;
inc->i_rx_tstamp.tv_sec = 0;
inc->i_rx_tstamp.tv_usec = 0;
@@ -59,13 +59,13 @@ void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
EXPORT_SYMBOL_GPL(rds_inc_init);
void rds_inc_path_init(struct rds_incoming *inc, struct rds_conn_path *cp,
- __be32 saddr)
+ struct in6_addr *saddr)
{
refcount_set(&inc->i_refcount, 1);
INIT_LIST_HEAD(&inc->i_item);
inc->i_conn = cp->cp_conn;
inc->i_conn_path = cp;
- inc->i_saddr = saddr;
+ inc->i_saddr = *saddr;
inc->i_rdma_cookie = 0;
inc->i_rx_tstamp.tv_sec = 0;
inc->i_rx_tstamp.tv_usec = 0;
@@ -110,7 +110,7 @@ static void rds_recv_rcvbuf_delta(struct rds_sock *rs, struct sock *sk,
now_congested = rs->rs_rcv_bytes > rds_sk_rcvbuf(rs);
- rdsdebug("rs %p (%pI4:%u) recv bytes %d buf %d "
+ rdsdebug("rs %p (%pI6c:%u) recv bytes %d buf %d "
"now_cong %d delta %d\n",
rs, &rs->rs_bound_addr,
ntohs(rs->rs_bound_port), rs->rs_rcv_bytes,
@@ -260,7 +260,7 @@ static void rds_start_mprds(struct rds_connection *conn)
struct rds_conn_path *cp;
if (conn->c_npaths > 1 &&
- IS_CANONICAL(conn->c_laddr, conn->c_faddr)) {
+ rds_addr_cmp(&conn->c_laddr, &conn->c_faddr) < 0) {
for (i = 0; i < conn->c_npaths; i++) {
cp = &conn->c_path[i];
rds_conn_path_connect_if_down(cp);
@@ -284,7 +284,8 @@ static void rds_start_mprds(struct rds_connection *conn)
* conn. This lets loopback, who only has one conn for both directions,
* tell us which roles the addrs in the conn are playing for this message.
*/
-void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
+void rds_recv_incoming(struct rds_connection *conn, struct in6_addr *saddr,
+ struct in6_addr *daddr,
struct rds_incoming *inc, gfp_t gfp)
{
struct rds_sock *rs = NULL;
@@ -339,7 +340,8 @@ void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
if (rds_sysctl_ping_enable && inc->i_hdr.h_dport == 0) {
if (inc->i_hdr.h_sport == 0) {
- rdsdebug("ignore ping with 0 sport from 0x%x\n", saddr);
+ rdsdebug("ignore ping with 0 sport from %pI6c\n",
+ saddr);
goto out;
}
rds_stats_inc(s_recv_ping);
@@ -362,7 +364,7 @@ void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
goto out;
}
- rs = rds_find_bound(daddr, inc->i_hdr.h_dport);
+ rs = rds_find_bound(daddr, inc->i_hdr.h_dport, conn->c_bound_if);
if (!rs) {
rds_stats_inc(s_recv_drop_no_sock);
goto out;
@@ -625,6 +627,7 @@ int rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
struct rds_sock *rs = rds_sk_to_rs(sk);
long timeo;
int ret = 0, nonblock = msg_flags & MSG_DONTWAIT;
+ DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
DECLARE_SOCKADDR(struct sockaddr_in *, sin, msg->msg_name);
struct rds_incoming *inc = NULL;
@@ -673,7 +676,7 @@ int rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
break;
}
- rdsdebug("copying inc %p from %pI4:%u to user\n", inc,
+ rdsdebug("copying inc %p from %pI6c:%u to user\n", inc,
&inc->i_conn->c_faddr,
ntohs(inc->i_hdr.h_sport));
ret = inc->i_conn->c_trans->inc_copy_to_user(inc, &msg->msg_iter);
@@ -707,12 +710,26 @@ int rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
rds_stats_inc(s_recv_delivered);
- if (sin) {
- sin->sin_family = AF_INET;
- sin->sin_port = inc->i_hdr.h_sport;
- sin->sin_addr.s_addr = inc->i_saddr;
- memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
- msg->msg_namelen = sizeof(*sin);
+ if (msg->msg_name) {
+ if (ipv6_addr_v4mapped(&inc->i_saddr)) {
+ sin = (struct sockaddr_in *)msg->msg_name;
+
+ sin->sin_family = AF_INET;
+ sin->sin_port = inc->i_hdr.h_sport;
+ sin->sin_addr.s_addr =
+ inc->i_saddr.s6_addr32[3];
+ memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
+ msg->msg_namelen = sizeof(*sin);
+ } else {
+ sin6 = (struct sockaddr_in6 *)msg->msg_name;
+
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_port = inc->i_hdr.h_sport;
+ sin6->sin6_addr = inc->i_saddr;
+ sin6->sin6_flowinfo = 0;
+ sin6->sin6_scope_id = rs->rs_bound_scope_id;
+ msg->msg_namelen = sizeof(*sin6);
+ }
}
break;
}
@@ -775,3 +792,30 @@ 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,
+ int flip)
+{
+ struct rds6_info_message minfo6;
+
+ minfo6.seq = be64_to_cpu(inc->i_hdr.h_sequence);
+ minfo6.len = be32_to_cpu(inc->i_hdr.h_len);
+
+ if (flip) {
+ minfo6.laddr = *daddr;
+ minfo6.faddr = *saddr;
+ minfo6.lport = inc->i_hdr.h_dport;
+ minfo6.fport = inc->i_hdr.h_sport;
+ } else {
+ minfo6.laddr = *saddr;
+ minfo6.faddr = *daddr;
+ minfo6.lport = inc->i_hdr.h_sport;
+ minfo6.fport = inc->i_hdr.h_dport;
+ }
+
+ rds_info_copy(iter, &minfo6, sizeof(minfo6));
+}
+#endif
diff --git a/net/rds/send.c b/net/rds/send.c
index 59f17a2335f4..57b3d5a8b2db 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -709,7 +709,7 @@ void rds_send_drop_acked(struct rds_connection *conn, u64 ack,
}
EXPORT_SYMBOL_GPL(rds_send_drop_acked);
-void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in *dest)
+void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in6 *dest)
{
struct rds_message *rm, *tmp;
struct rds_connection *conn;
@@ -721,8 +721,9 @@ void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in *dest)
spin_lock_irqsave(&rs->rs_lock, flags);
list_for_each_entry_safe(rm, tmp, &rs->rs_send_queue, m_sock_item) {
- if (dest && (dest->sin_addr.s_addr != rm->m_daddr ||
- dest->sin_port != rm->m_inc.i_hdr.h_dport))
+ if (dest &&
+ (!ipv6_addr_equal(&dest->sin6_addr, &rm->m_daddr) ||
+ dest->sin6_port != rm->m_inc.i_hdr.h_dport))
continue;
list_move(&rm->m_sock_item, &list);
@@ -1059,8 +1060,8 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
{
struct sock *sk = sock->sk;
struct rds_sock *rs = rds_sk_to_rs(sk);
+ DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name);
- __be32 daddr;
__be16 dport;
struct rds_message *rm = NULL;
struct rds_connection *conn;
@@ -1069,10 +1070,13 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
int nonblock = msg->msg_flags & MSG_DONTWAIT;
long timeo = sock_sndtimeo(sk, nonblock);
struct rds_conn_path *cpath;
+ struct in6_addr daddr;
+ __u32 scope_id = 0;
size_t total_payload_len = payload_len, rdma_payload_len = 0;
bool zcopy = ((msg->msg_flags & MSG_ZEROCOPY) &&
sock_flag(rds_rs_to_sk(rs), SOCK_ZEROCOPY));
int num_sgs = ceil(payload_len, PAGE_SIZE);
+ int namelen;
/* Mirror Linux UDP mirror of BSD error message compatibility */
/* XXX: Perhaps MSG_MORE someday */
@@ -1081,27 +1085,108 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
goto out;
}
- if (msg->msg_namelen) {
- /* XXX fail non-unicast destination IPs? */
- if (msg->msg_namelen < sizeof(*usin) || usin->sin_family != AF_INET) {
+ namelen = msg->msg_namelen;
+ if (namelen != 0) {
+ if (namelen < sizeof(*usin)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ switch (usin->sin_family) {
+ case AF_INET:
+ if (usin->sin_addr.s_addr == htonl(INADDR_ANY) ||
+ usin->sin_addr.s_addr == htonl(INADDR_BROADCAST) ||
+ IN_MULTICAST(ntohl(usin->sin_addr.s_addr))) {
+ ret = -EINVAL;
+ goto out;
+ }
+ ipv6_addr_set_v4mapped(usin->sin_addr.s_addr, &daddr);
+ dport = usin->sin_port;
+ break;
+
+#if IS_ENABLED(CONFIG_IPV6)
+ case AF_INET6: {
+ int addr_type;
+
+ if (namelen < sizeof(*sin6)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ addr_type = ipv6_addr_type(&sin6->sin6_addr);
+ if (!(addr_type & IPV6_ADDR_UNICAST)) {
+ __be32 addr4;
+
+ if (!(addr_type & IPV6_ADDR_MAPPED)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* It is a mapped address. Need to do some
+ * sanity checks.
+ */
+ addr4 = sin6->sin6_addr.s6_addr32[3];
+ if (addr4 == htonl(INADDR_ANY) ||
+ addr4 == htonl(INADDR_BROADCAST) ||
+ IN_MULTICAST(ntohl(addr4))) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+ if (addr_type & IPV6_ADDR_LINKLOCAL) {
+ if (sin6->sin6_scope_id == 0) {
+ ret = -EINVAL;
+ goto out;
+ }
+ scope_id = sin6->sin6_scope_id;
+ }
+
+ daddr = sin6->sin6_addr;
+ dport = sin6->sin6_port;
+ break;
+ }
+#endif
+
+ default:
ret = -EINVAL;
goto out;
}
- daddr = usin->sin_addr.s_addr;
- dport = usin->sin_port;
} else {
/* We only care about consistency with ->connect() */
lock_sock(sk);
daddr = rs->rs_conn_addr;
dport = rs->rs_conn_port;
+ scope_id = rs->rs_bound_scope_id;
release_sock(sk);
}
lock_sock(sk);
- if (daddr == 0 || rs->rs_bound_addr == 0) {
+ if (ipv6_addr_any(&rs->rs_bound_addr) || ipv6_addr_any(&daddr)) {
release_sock(sk);
- ret = -ENOTCONN; /* XXX not a great errno */
+ ret = -ENOTCONN;
goto out;
+ } else if (namelen != 0) {
+ /* Cannot send to an IPv4 address using an IPv6 source
+ * address and cannot send to an IPv6 address using an
+ * IPv4 source address.
+ */
+ if (ipv6_addr_v4mapped(&daddr) ^
+ ipv6_addr_v4mapped(&rs->rs_bound_addr)) {
+ release_sock(sk);
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+ /* If the socket is already bound to a link local address,
+ * it can only send to peers on the same link. But allow
+ * communicating beween link local and non-link local address.
+ */
+ if (scope_id != rs->rs_bound_scope_id) {
+ if (!scope_id) {
+ scope_id = rs->rs_bound_scope_id;
+ } else if (rs->rs_bound_scope_id) {
+ release_sock(sk);
+ ret = -EINVAL;
+ goto out;
+ }
+ }
}
release_sock(sk);
@@ -1155,13 +1240,14 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
/* rds_conn_create has a spinlock that runs with IRQ off.
* Caching the conn in the socket helps a lot. */
- if (rs->rs_conn && rs->rs_conn->c_faddr == daddr)
+ if (rs->rs_conn && ipv6_addr_equal(&rs->rs_conn->c_faddr, &daddr))
conn = rs->rs_conn;
else {
conn = rds_conn_create_outgoing(sock_net(sock->sk),
- rs->rs_bound_addr, daddr,
- rs->rs_transport,
- sock->sk->sk_allocation);
+ &rs->rs_bound_addr, &daddr,
+ rs->rs_transport,
+ sock->sk->sk_allocation,
+ scope_id);
if (IS_ERR(conn)) {
ret = PTR_ERR(conn);
goto out;
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 351a28474667..2c7b7c352d3e 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -37,6 +37,8 @@
#include <net/tcp.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
+#include <net/tcp.h>
+#include <net/addrconf.h>
#include "rds.h"
#include "tcp.h"
@@ -44,7 +46,14 @@
/* only for info exporting */
static DEFINE_SPINLOCK(rds_tcp_tc_list_lock);
static LIST_HEAD(rds_tcp_tc_list);
+
+/* rds_tcp_tc_count counts only IPv4 connections.
+ * 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);
@@ -111,7 +120,11 @@ 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);
- rds_tcp_tc_count--;
+#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);
tc->t_sock = NULL;
@@ -198,7 +211,11 @@ 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);
- rds_tcp_tc_count++;
+#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);
/* accepted sockets need our listen data ready undone */
@@ -219,6 +236,9 @@ void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp)
write_unlock_bh(&sock->sk->sk_callback_lock);
}
+/* Handle RDS_INFO_TCP_SOCKETS socket option. It only returns IPv4
+ * connections for backward compatibility.
+ */
static void rds_tcp_tc_info(struct socket *rds_sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens)
@@ -226,8 +246,6 @@ static void rds_tcp_tc_info(struct socket *rds_sock, unsigned int len,
struct rds_info_tcp_socket tsinfo;
struct rds_tcp_connection *tc;
unsigned long flags;
- struct sockaddr_in sin;
- struct socket *sock;
spin_lock_irqsave(&rds_tcp_tc_list_lock, flags);
@@ -235,16 +253,15 @@ static void rds_tcp_tc_info(struct socket *rds_sock, unsigned int len,
goto out;
list_for_each_entry(tc, &rds_tcp_tc_list, t_list_item) {
+ struct inet_sock *inet = inet_sk(tc->t_sock->sk);
- sock = tc->t_sock;
- if (sock) {
- sock->ops->getname(sock, (struct sockaddr *)&sin, 0);
- tsinfo.local_addr = sin.sin_addr.s_addr;
- tsinfo.local_port = sin.sin_port;
- sock->ops->getname(sock, (struct sockaddr *)&sin, 1);
- tsinfo.peer_addr = sin.sin_addr.s_addr;
- tsinfo.peer_port = sin.sin_port;
- }
+ if (tc->t_cpath->cp_conn->c_isv6)
+ continue;
+
+ tsinfo.local_addr = inet->inet_saddr;
+ tsinfo.local_port = inet->inet_sport;
+ tsinfo.peer_addr = inet->inet_daddr;
+ tsinfo.peer_port = inet->inet_dport;
tsinfo.hdr_rem = tc->t_tinc_hdr_rem;
tsinfo.data_rem = tc->t_tinc_data_rem;
@@ -262,10 +279,82 @@ out:
spin_unlock_irqrestore(&rds_tcp_tc_list_lock, flags);
}
-static int rds_tcp_laddr_check(struct net *net, __be32 addr)
+#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.
+ */
+static void rds6_tcp_tc_info(struct socket *sock, unsigned int len,
+ struct rds_info_iterator *iter,
+ struct rds_info_lengths *lens)
{
- if (inet_addr_type(net, addr) == RTN_LOCAL)
+ struct rds6_info_tcp_socket tsinfo6;
+ struct rds_tcp_connection *tc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rds_tcp_tc_list_lock, flags);
+
+ if (len / sizeof(tsinfo6) < rds6_tcp_tc_count)
+ goto out;
+
+ list_for_each_entry(tc, &rds_tcp_tc_list, t_list_item) {
+ struct sock *sk = tc->t_sock->sk;
+ struct inet_sock *inet = inet_sk(sk);
+
+ tsinfo6.local_addr = sk->sk_v6_rcv_saddr;
+ tsinfo6.local_port = inet->inet_sport;
+ tsinfo6.peer_addr = sk->sk_v6_daddr;
+ tsinfo6.peer_port = inet->inet_dport;
+
+ tsinfo6.hdr_rem = tc->t_tinc_hdr_rem;
+ tsinfo6.data_rem = tc->t_tinc_data_rem;
+ tsinfo6.last_sent_nxt = tc->t_last_sent_nxt;
+ tsinfo6.last_expected_una = tc->t_last_expected_una;
+ tsinfo6.last_seen_una = tc->t_last_seen_una;
+
+ rds_info_copy(iter, &tsinfo6, sizeof(tsinfo6));
+ }
+
+out:
+ lens->nr = rds6_tcp_tc_count;
+ lens->each = sizeof(tsinfo6);
+
+ 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)
+ return 0;
+ return -EADDRNOTAVAIL;
+ }
+
+ /* If the scope_id is specified, check only those addresses
+ * hosted on the specified interface.
+ */
+ if (scope_id != 0) {
+ rcu_read_lock();
+ dev = dev_get_by_index_rcu(net, scope_id);
+ /* scope_id is not valid... */
+ if (!dev) {
+ rcu_read_unlock();
+ return -EADDRNOTAVAIL;
+ }
+ rcu_read_unlock();
+ }
+#if IS_ENABLED(CONFIG_IPV6)
+ ret = ipv6_chk_addr(net, addr, dev, 0);
+ if (ret)
return 0;
+#endif
return -EADDRNOTAVAIL;
}
@@ -468,13 +557,27 @@ static __net_init int rds_tcp_init_net(struct net *net)
err = -ENOMEM;
goto fail;
}
- rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net);
+
+#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 listen sock\n");
- unregister_net_sysctl_table(rtn->rds_tcp_sysctl);
- rtn->rds_tcp_sysctl = NULL;
- err = -EAFNOSUPPORT;
- goto fail;
+ 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;
@@ -588,6 +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);
@@ -619,6 +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:
@@ -633,4 +742,3 @@ module_init(rds_tcp_init);
MODULE_AUTHOR("Oracle Corporation <rds-devel@oss.oracle.com>");
MODULE_DESCRIPTION("RDS: TCP transport");
MODULE_LICENSE("Dual BSD/GPL");
-
diff --git a/net/rds/tcp.h b/net/rds/tcp.h
index c6fa080e9b6d..3c69361d21c7 100644
--- a/net/rds/tcp.h
+++ b/net/rds/tcp.h
@@ -67,7 +67,7 @@ void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn);
void rds_tcp_state_change(struct sock *sk);
/* tcp_listen.c */
-struct socket *rds_tcp_listen_init(struct net *);
+struct socket *rds_tcp_listen_init(struct net *net, bool isv6);
void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor);
void rds_tcp_listen_data_ready(struct sock *sk);
int rds_tcp_accept_one(struct socket *sock);
diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c
index d999e7075645..008f50fb25dd 100644
--- a/net/rds/tcp_connect.c
+++ b/net/rds/tcp_connect.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -66,7 +66,8 @@ void rds_tcp_state_change(struct sock *sk)
* RDS connection as RDS_CONN_UP until the reconnect,
* to avoid RDS datagram loss.
*/
- if (!IS_CANONICAL(cp->cp_conn->c_laddr, cp->cp_conn->c_faddr) &&
+ if (rds_addr_cmp(&cp->cp_conn->c_laddr,
+ &cp->cp_conn->c_faddr) >= 0 &&
rds_conn_path_transition(cp, RDS_CONN_CONNECTING,
RDS_CONN_ERROR)) {
rds_conn_path_drop(cp, false);
@@ -88,7 +89,11 @@ out:
int rds_tcp_conn_path_connect(struct rds_conn_path *cp)
{
struct socket *sock = NULL;
- struct sockaddr_in src, dest;
+ struct sockaddr_in6 sin6;
+ struct sockaddr_in sin;
+ struct sockaddr *addr;
+ int addrlen;
+ bool isv6;
int ret;
struct rds_connection *conn = cp->cp_conn;
struct rds_tcp_connection *tc = cp->cp_transport_data;
@@ -105,37 +110,68 @@ int rds_tcp_conn_path_connect(struct rds_conn_path *cp)
mutex_unlock(&tc->t_conn_path_lock);
return 0;
}
- ret = sock_create_kern(rds_conn_net(conn), PF_INET,
- SOCK_STREAM, IPPROTO_TCP, &sock);
+ if (ipv6_addr_v4mapped(&conn->c_laddr)) {
+ ret = sock_create_kern(rds_conn_net(conn), PF_INET,
+ SOCK_STREAM, IPPROTO_TCP, &sock);
+ isv6 = false;
+ } else {
+ ret = sock_create_kern(rds_conn_net(conn), PF_INET6,
+ SOCK_STREAM, IPPROTO_TCP, &sock);
+ isv6 = true;
+ }
+
if (ret < 0)
goto out;
rds_tcp_tune(sock);
- src.sin_family = AF_INET;
- src.sin_addr.s_addr = (__force u32)conn->c_laddr;
- src.sin_port = (__force u16)htons(0);
+ if (isv6) {
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_addr = conn->c_laddr;
+ sin6.sin6_port = 0;
+ sin6.sin6_flowinfo = 0;
+ sin6.sin6_scope_id = conn->c_dev_if;
+ addr = (struct sockaddr *)&sin6;
+ addrlen = sizeof(sin6);
+ } else {
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = conn->c_laddr.s6_addr32[3];
+ sin.sin_port = 0;
+ addr = (struct sockaddr *)&sin;
+ addrlen = sizeof(sin);
+ }
- ret = sock->ops->bind(sock, (struct sockaddr *)&src, sizeof(src));
+ ret = sock->ops->bind(sock, addr, addrlen);
if (ret) {
- rdsdebug("bind failed with %d at address %pI4\n",
+ rdsdebug("bind failed with %d at address %pI6c\n",
ret, &conn->c_laddr);
goto out;
}
- dest.sin_family = AF_INET;
- dest.sin_addr.s_addr = (__force u32)conn->c_faddr;
- dest.sin_port = (__force u16)htons(RDS_TCP_PORT);
+ if (isv6) {
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_addr = conn->c_faddr;
+ sin6.sin6_port = htons(RDS_TCP_PORT);
+ sin6.sin6_flowinfo = 0;
+ sin6.sin6_scope_id = conn->c_dev_if;
+ addr = (struct sockaddr *)&sin6;
+ addrlen = sizeof(sin6);
+ } else {
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = conn->c_faddr.s6_addr32[3];
+ sin.sin_port = htons(RDS_TCP_PORT);
+ addr = (struct sockaddr *)&sin;
+ addrlen = sizeof(sin);
+ }
/*
* once we call connect() we can start getting callbacks and they
* own the socket
*/
rds_tcp_set_callbacks(sock, cp);
- ret = sock->ops->connect(sock, (struct sockaddr *)&dest, sizeof(dest),
- O_NONBLOCK);
+ ret = sock->ops->connect(sock, addr, addrlen, O_NONBLOCK);
- rdsdebug("connect to address %pI4 returned %d\n", &conn->c_faddr, ret);
+ rdsdebug("connect to address %pI6c returned %d\n", &conn->c_faddr, ret);
if (ret == -EINPROGRESS)
ret = 0;
if (ret == 0) {
diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c
index 22571189f21e..c12203f646da 100644
--- a/net/rds/tcp_listen.c
+++ b/net/rds/tcp_listen.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006, 2018 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -83,13 +83,12 @@ static
struct rds_tcp_connection *rds_tcp_accept_one_path(struct rds_connection *conn)
{
int i;
- bool peer_is_smaller = IS_CANONICAL(conn->c_faddr, conn->c_laddr);
int npaths = max_t(int, 1, conn->c_npaths);
/* for mprds, all paths MUST be initiated by the peer
* with the smaller address.
*/
- if (!peer_is_smaller) {
+ if (rds_addr_cmp(&conn->c_faddr, &conn->c_laddr) >= 0) {
/* Make sure we initiate at least one path if this
* has not already been done; rds_start_mprds() will
* take care of additional paths, if necessary.
@@ -132,6 +131,11 @@ int rds_tcp_accept_one(struct socket *sock)
struct rds_tcp_connection *rs_tcp = NULL;
int conn_state;
struct rds_conn_path *cp;
+ struct in6_addr *my_addr, *peer_addr;
+#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;
@@ -164,13 +168,40 @@ int rds_tcp_accept_one(struct socket *sock)
inet = inet_sk(new_sock->sk);
- rdsdebug("accepted tcp %pI4:%u -> %pI4:%u\n",
- &inet->inet_saddr, ntohs(inet->inet_sport),
- &inet->inet_daddr, ntohs(inet->inet_dport));
+#if IS_ENABLED(CONFIG_IPV6)
+ my_addr = &new_sock->sk->sk_v6_rcv_saddr;
+ peer_addr = &new_sock->sk->sk_v6_daddr;
+#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.
+ */
+ if ((ipv6_addr_type(my_addr) & IPV6_ADDR_LINKLOCAL) &&
+ !(ipv6_addr_type(peer_addr) & IPV6_ADDR_LINKLOCAL)) {
+ struct ipv6_pinfo *inet6;
+
+ inet6 = inet6_sk(new_sock->sk);
+ dev_if = inet6->mcast_oif;
+ } else {
+ dev_if = new_sock->sk->sk_bound_dev_if;
+ }
+#endif
conn = rds_conn_create(sock_net(sock->sk),
- inet->inet_saddr, inet->inet_daddr,
- &rds_tcp_transport, GFP_KERNEL);
+ my_addr, peer_addr,
+ &rds_tcp_transport, GFP_KERNEL, dev_if);
+
if (IS_ERR(conn)) {
ret = PTR_ERR(conn);
goto out;
@@ -254,15 +285,22 @@ out:
ready(sk);
}
-struct socket *rds_tcp_listen_init(struct net *net)
+struct socket *rds_tcp_listen_init(struct net *net, bool isv6)
{
- struct sockaddr_in sin;
struct socket *sock = NULL;
+ struct sockaddr_storage ss;
+ struct sockaddr_in6 *sin6;
+ struct sockaddr_in *sin;
+ int addr_len;
int ret;
- ret = sock_create_kern(net, PF_INET, SOCK_STREAM, IPPROTO_TCP, &sock);
- if (ret < 0)
+ ret = sock_create_kern(net, isv6 ? PF_INET6 : PF_INET, SOCK_STREAM,
+ IPPROTO_TCP, &sock);
+ if (ret < 0) {
+ rdsdebug("could not create %s listener socket: %d\n",
+ isv6 ? "IPv6" : "IPv4", ret);
goto out;
+ }
sock->sk->sk_reuse = SK_CAN_REUSE;
rds_tcp_nonagle(sock);
@@ -272,13 +310,28 @@ struct socket *rds_tcp_listen_init(struct net *net)
sock->sk->sk_data_ready = rds_tcp_listen_data_ready;
write_unlock_bh(&sock->sk->sk_callback_lock);
- sin.sin_family = PF_INET;
- sin.sin_addr.s_addr = (__force u32)htonl(INADDR_ANY);
- sin.sin_port = (__force u16)htons(RDS_TCP_PORT);
+ if (isv6) {
+ sin6 = (struct sockaddr_in6 *)&ss;
+ sin6->sin6_family = PF_INET6;
+ sin6->sin6_addr = in6addr_any;
+ sin6->sin6_port = (__force u16)htons(RDS_TCP_PORT);
+ sin6->sin6_scope_id = 0;
+ sin6->sin6_flowinfo = 0;
+ addr_len = sizeof(*sin6);
+ } else {
+ sin = (struct sockaddr_in *)&ss;
+ sin->sin_family = PF_INET;
+ sin->sin_addr.s_addr = INADDR_ANY;
+ sin->sin_port = (__force u16)htons(RDS_TCP_PORT);
+ addr_len = sizeof(*sin);
+ }
- ret = sock->ops->bind(sock, (struct sockaddr *)&sin, sizeof(sin));
- if (ret < 0)
+ ret = sock->ops->bind(sock, (struct sockaddr *)&ss, addr_len);
+ if (ret < 0) {
+ rdsdebug("could not bind %s listener socket: %d\n",
+ isv6 ? "IPv6" : "IPv4", ret);
goto out;
+ }
ret = sock->ops->listen(sock, 64);
if (ret < 0)
diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c
index b9fbd2ee74ef..42c5ff1eda95 100644
--- a/net/rds/tcp_recv.c
+++ b/net/rds/tcp_recv.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -179,7 +179,7 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb,
tc->t_tinc = tinc;
rdsdebug("alloced tinc %p\n", tinc);
rds_inc_path_init(&tinc->ti_inc, cp,
- cp->cp_conn->c_faddr);
+ &cp->cp_conn->c_faddr);
tinc->ti_inc.i_rx_lat_trace[RDS_MSG_RX_HDR] =
local_clock();
@@ -239,8 +239,9 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb,
if (tinc->ti_inc.i_hdr.h_flags == RDS_FLAG_CONG_BITMAP)
rds_tcp_cong_recv(conn, tinc);
else
- rds_recv_incoming(conn, conn->c_faddr,
- conn->c_laddr, &tinc->ti_inc,
+ rds_recv_incoming(conn, &conn->c_faddr,
+ &conn->c_laddr,
+ &tinc->ti_inc,
arg->gfp);
tc->t_tinc_hdr_rem = sizeof(struct rds_header);
diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c
index 7df869d37afd..78a2554a4497 100644
--- a/net/rds/tcp_send.c
+++ b/net/rds/tcp_send.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -153,7 +153,7 @@ out:
* an incoming RST.
*/
if (rds_conn_path_up(cp)) {
- pr_warn("RDS/tcp: send to %pI4 on cp [%d]"
+ pr_warn("RDS/tcp: send to %pI6c on cp [%d]"
"returned %d, "
"disconnecting and reconnecting\n",
&conn->c_faddr, cp->cp_index, ret);
diff --git a/net/rds/threads.c b/net/rds/threads.c
index c52861d77a59..e64f9e4c3cda 100644
--- a/net/rds/threads.c
+++ b/net/rds/threads.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -82,8 +82,8 @@ void rds_connect_path_complete(struct rds_conn_path *cp, int curr)
return;
}
- rdsdebug("conn %p for %pI4 to %pI4 complete\n",
- cp->cp_conn, &cp->cp_conn->c_laddr, &cp->cp_conn->c_faddr);
+ rdsdebug("conn %p for %pI6c to %pI6c complete\n",
+ cp->cp_conn, &cp->cp_conn->c_laddr, &cp->cp_conn->c_faddr);
cp->cp_reconnect_jiffies = 0;
set_bit(0, &cp->cp_conn->c_map_queued);
@@ -125,13 +125,13 @@ void rds_queue_reconnect(struct rds_conn_path *cp)
unsigned long rand;
struct rds_connection *conn = cp->cp_conn;
- rdsdebug("conn %p for %pI4 to %pI4 reconnect jiffies %lu\n",
- conn, &conn->c_laddr, &conn->c_faddr,
- cp->cp_reconnect_jiffies);
+ rdsdebug("conn %p for %pI6c to %pI6c reconnect jiffies %lu\n",
+ conn, &conn->c_laddr, &conn->c_faddr,
+ cp->cp_reconnect_jiffies);
/* let peer with smaller addr initiate reconnect, to avoid duels */
if (conn->c_trans->t_type == RDS_TRANS_TCP &&
- !IS_CANONICAL(conn->c_laddr, conn->c_faddr))
+ rds_addr_cmp(&conn->c_laddr, &conn->c_faddr) >= 0)
return;
set_bit(RDS_RECONNECT_PENDING, &cp->cp_flags);
@@ -145,7 +145,7 @@ void rds_queue_reconnect(struct rds_conn_path *cp)
}
get_random_bytes(&rand, sizeof(rand));
- rdsdebug("%lu delay %lu ceil conn %p for %pI4 -> %pI4\n",
+ rdsdebug("%lu delay %lu ceil conn %p for %pI6c -> %pI6c\n",
rand % cp->cp_reconnect_jiffies, cp->cp_reconnect_jiffies,
conn, &conn->c_laddr, &conn->c_faddr);
rcu_read_lock();
@@ -167,14 +167,14 @@ void rds_connect_worker(struct work_struct *work)
int ret;
if (cp->cp_index > 0 &&
- !IS_CANONICAL(cp->cp_conn->c_laddr, cp->cp_conn->c_faddr))
+ rds_addr_cmp(&cp->cp_conn->c_laddr, &cp->cp_conn->c_faddr) >= 0)
return;
clear_bit(RDS_RECONNECT_PENDING, &cp->cp_flags);
ret = rds_conn_path_transition(cp, RDS_CONN_DOWN, RDS_CONN_CONNECTING);
if (ret) {
ret = conn->c_trans->conn_path_connect(cp);
- rdsdebug("conn %p for %pI4 to %pI4 dispatched, ret %d\n",
- conn, &conn->c_laddr, &conn->c_faddr, ret);
+ rdsdebug("conn %p for %pI6c to %pI6c dispatched, ret %d\n",
+ conn, &conn->c_laddr, &conn->c_faddr, ret);
if (ret) {
if (rds_conn_path_transition(cp,
@@ -259,3 +259,50 @@ int rds_threads_init(void)
return 0;
}
+
+/* Compare two IPv6 addresses. Return 0 if the two addresses are equal.
+ * Return 1 if the first is greater. Return -1 if the second is greater.
+ */
+int rds_addr_cmp(const struct in6_addr *addr1,
+ const struct in6_addr *addr2)
+{
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
+ const __be64 *a1, *a2;
+ u64 x, y;
+
+ a1 = (__be64 *)addr1;
+ a2 = (__be64 *)addr2;
+
+ if (*a1 != *a2) {
+ if (be64_to_cpu(*a1) < be64_to_cpu(*a2))
+ return -1;
+ else
+ return 1;
+ } else {
+ x = be64_to_cpu(*++a1);
+ y = be64_to_cpu(*++a2);
+ if (x < y)
+ return -1;
+ else if (x > y)
+ return 1;
+ else
+ return 0;
+ }
+#else
+ u32 a, b;
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ if (addr1->s6_addr32[i] != addr2->s6_addr32[i]) {
+ a = ntohl(addr1->s6_addr32[i]);
+ b = ntohl(addr2->s6_addr32[i]);
+ if (a < b)
+ return -1;
+ else if (a > b)
+ return 1;
+ }
+ }
+ return 0;
+#endif
+}
+EXPORT_SYMBOL_GPL(rds_addr_cmp);
diff --git a/net/rds/transport.c b/net/rds/transport.c
index 0b188dd0a344..46f709a4b577 100644
--- a/net/rds/transport.c
+++ b/net/rds/transport.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 Oracle. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -33,6 +33,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/in.h>
+#include <linux/ipv6.h>
#include "rds.h"
#include "loop.h"
@@ -75,20 +76,26 @@ void rds_trans_put(struct rds_transport *trans)
module_put(trans->t_owner);
}
-struct rds_transport *rds_trans_get_preferred(struct net *net, __be32 addr)
+struct rds_transport *rds_trans_get_preferred(struct net *net,
+ const struct in6_addr *addr,
+ __u32 scope_id)
{
struct rds_transport *ret = NULL;
struct rds_transport *trans;
unsigned int i;
- if (IN_LOOPBACK(ntohl(addr)))
+ if (ipv6_addr_v4mapped(addr)) {
+ if (*(u_int8_t *)&addr->s6_addr32[3] == IN_LOOPBACKNET)
+ return &rds_loop_transport;
+ } else if (ipv6_addr_loopback(addr)) {
return &rds_loop_transport;
+ }
down_read(&rds_trans_sem);
for (i = 0; i < RDS_TRANS_COUNT; i++) {
trans = transports[i];
- if (trans && (trans->laddr_check(net, addr) == 0) &&
+ if (trans && (trans->laddr_check(net, addr, scope_id) == 0) &&
(!trans->t_owner || try_module_get(trans->t_owner))) {
ret = trans;
break;
@@ -152,4 +159,3 @@ unsigned int rds_trans_stats_info_copy(struct rds_info_iterator *iter,
return total;
}
-