From de357cc01334a468e4d5b7ba66a17b0d3ca9d63e Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Sat, 15 Mar 2008 23:59:18 -0400 Subject: [IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki --- net/ipv6/ndisc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'net/ipv6/ndisc.c') diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 16273e11e53..c400b874097 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1092,11 +1092,13 @@ static void ndisc_router_discovery(struct sk_buff *skb) return; } +#ifdef CONFIG_IPV6_NDISC_NODETYPE if (skb->ndisc_nodetype == NDISC_NODETYPE_HOST) { ND_PRINTK2(KERN_WARNING "ICMPv6 RA: from host or unauthorized router\n"); return; } +#endif /* * set the RA_RECV flag in the interface @@ -1121,9 +1123,11 @@ static void ndisc_router_discovery(struct sk_buff *skb) return; } +#ifdef CONFIG_IPV6_NDISC_NODETYPE /* skip link-specific parameters from interior routers */ if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT) goto skip_linkparms; +#endif if (in6_dev->if_flags & IF_RS_SENT) { /* @@ -1239,7 +1243,9 @@ skip_defrtr: } } +#ifdef CONFIG_IPV6_NDISC_NODETYPE skip_linkparms: +#endif /* * Process options. @@ -1286,9 +1292,11 @@ skip_linkparms: } #endif +#ifdef CONFIG_IPV6_NDISC_NODETYPE /* skip link-specific ndopts from interior routers */ if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT) goto out; +#endif if (in6_dev->cnf.accept_ra_pinfo && ndopts.nd_opts_pi) { struct nd_opt_hdr *p; @@ -1353,6 +1361,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb) int optlen; u8 *lladdr = NULL; +#ifdef CONFIG_IPV6_NDISC_NODETYPE switch (skb->ndisc_nodetype) { case NDISC_NODETYPE_HOST: case NDISC_NODETYPE_NODEFAULT: @@ -1360,6 +1369,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb) "ICMPv6 Redirect: from host or unauthorized router\n"); return; } +#endif if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) { ND_PRINTK2(KERN_WARNING -- cgit v1.2.3