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Diffstat (limited to 'net/rds/af_rds.c')
-rw-r--r--net/rds/af_rds.c205
1 files changed, 167 insertions, 38 deletions
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));
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 02:02:02 +0000