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SUNRPC: Ensure IPV6_V6ONLY is set on the socket before binding to a port

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Also ensure that we use the protocol family instead of the address
family when calling sock_create_kern().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2009-03-30 18:59:17 -04:00
parent ad5b365c12
commit c69da774b2
1 changed files with 25 additions and 13 deletions
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38
net/sunrpc/svcsock.c
View file

@ -1110,7 +1110,6 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
struct svc_sock *svsk;
struct sock *inet;
int pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
int val;
dprintk("svc: svc_setup_socket %p\n", sock);
if (!(svsk = kzalloc(sizeof(*svsk), GFP_KERNEL))) {
@ -1143,16 +1142,6 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
else
svc_tcp_init(svsk, serv);
/*
* If this is a PF_INET6 listener, we want to avoid
* getting requests from IPv4 remotes. Those should
* be shunted to a PF_INET listener via rpcbind.
*/
val = 1;
if (inet->sk_family == PF_INET6)
kernel_setsockopt(sock, SOL_IPV6, IPV6_V6ONLY,
(char *)&val, sizeof(val));
dprintk("svc: svc_setup_socket created %p (inet %p)\n",
svsk, svsk->sk_sk);
@ -1220,6 +1209,8 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
struct sockaddr_storage addr;
struct sockaddr *newsin = (struct sockaddr *)&addr;
int newlen;
int family;
int val;
RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
dprintk("svc: svc_create_socket(%s, %d, %s)\n",
@ -1231,14 +1222,35 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
"sockets supported\n");
return ERR_PTR(-EINVAL);
}
type = (protocol == IPPROTO_UDP)? SOCK_DGRAM : SOCK_STREAM;
error = sock_create_kern(sin->sa_family, type, protocol, &sock);
type = (protocol == IPPROTO_UDP)? SOCK_DGRAM : SOCK_STREAM;
switch (sin->sa_family) {
case AF_INET6:
family = PF_INET6;
break;
case AF_INET:
family = PF_INET;
break;
default:
return ERR_PTR(-EINVAL);
}
error = sock_create_kern(family, type, protocol, &sock);
if (error < 0)
return ERR_PTR(error);
svc_reclassify_socket(sock);
/*
* If this is an PF_INET6 listener, we want to avoid
* getting requests from IPv4 remotes. Those should
* be shunted to a PF_INET listener via rpcbind.
*/
val = 1;
if (family == PF_INET6)
kernel_setsockopt(sock, SOL_IPV6, IPV6_V6ONLY,
(char *)&val, sizeof(val));
if (type == SOCK_STREAM)
sock->sk->sk_reuse = 1; /* allow address reuse */
error = kernel_bind(sock, sin, len);