On Tue, 2009-03-03 at 15:32 -0700, Chuck Lever wrote: > We are about to convert to using separate RPC listener sockets for > AF_INET and AF_INET6. This echoes the way IPv6 is handled in user > space by TI-RPC, and eliminates the need to worry about mapped IPv4 > AF_INET6 addresses when doing address comparisons. > > Start by setting the IPV6ONLY flag on RPC listener sockets. > > Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> > --- > > net/sunrpc/svcsock.c | 10 ++++------ > 1 files changed, 4 insertions(+), 6 deletions(-) > > diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c > index d00bc33..ac6cd65 100644 > --- a/net/sunrpc/svcsock.c > +++ b/net/sunrpc/svcsock.c > @@ -1144,13 +1144,11 @@ static struct svc_sock > *svc_setup_socket(struct svc_serv *serv, > svc_tcp_init(svsk, serv); > > /* > - * We start one listener per sv_serv. We want AF_INET > - * requests to be automatically shunted to our PF_INET6 > - * listener using a mapped IPv4 address. Make sure > - * no-one starts an equivalent IPv4 listener, which > - * would steal our incoming connections. > + * 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 = 0; > + val = 1; > if (inet->sk_family == PF_INET6) AF_INET6... ...and this should probably be set before we bind the socket... > kernel_setsockopt(sock, SOL_IPV6, IPV6_V6ONLY, > (char *)&val, sizeof(val)); > > > -- Trond Myklebust Linux NFS client maintainer NetApp Trond.Myklebust@xxxxxxxxxx www.netapp.com -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
