From c69da774b28e01e062e0a3aba7509f2dcfd2a11a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 30 Mar 2009 18:59:17 -0400 Subject: SUNRPC: Ensure IPV6_V6ONLY is set on the socket before binding to a port Also ensure that we use the protocol family instead of the address family when calling sock_create_kern(). Signed-off-by: Trond Myklebust --- net/sunrpc/svcsock.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) (limited to 'net') diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index ac6cd65220c..9d504234af4 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -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; + 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(sin->sa_family, type, protocol, &sock); + 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); -- cgit v1.2.3-70-g09d2