diff options
Diffstat (limited to 'net/ipv6/ndisc.c')
| -rw-r--r-- | net/ipv6/ndisc.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index e9776aa6f167..b47e845d66eb 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -819,10 +819,8 @@ static enum skb_drop_reason ndisc_recv_ns(struct sk_buff *skb) return reason; } - if (!ndisc_parse_options(dev, msg->opt, ndoptlen, &ndopts)) { - ND_PRINTK(2, warn, "NS: invalid ND options\n"); - return reason; - } + if (!ndisc_parse_options(dev, msg->opt, ndoptlen, &ndopts)) + return SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS; if (ndopts.nd_opts_src_lladdr) { lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, dev); @@ -1026,10 +1024,9 @@ static enum skb_drop_reason ndisc_recv_na(struct sk_buff *skb) idev->cnf.drop_unsolicited_na) return reason; - if (!ndisc_parse_options(dev, msg->opt, ndoptlen, &ndopts)) { - ND_PRINTK(2, warn, "NS: invalid ND option\n"); - return reason; - } + if (!ndisc_parse_options(dev, msg->opt, ndoptlen, &ndopts)) + return SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS; + if (ndopts.nd_opts_tgt_lladdr) { lladdr = ndisc_opt_addr_data(ndopts.nd_opts_tgt_lladdr, dev); if (!lladdr) { @@ -1159,10 +1156,8 @@ static enum skb_drop_reason ndisc_recv_rs(struct sk_buff *skb) goto out; /* Parse ND options */ - if (!ndisc_parse_options(skb->dev, rs_msg->opt, ndoptlen, &ndopts)) { - ND_PRINTK(2, notice, "NS: invalid ND option, ignored\n"); - goto out; - } + if (!ndisc_parse_options(skb->dev, rs_msg->opt, ndoptlen, &ndopts)) + return SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS; if (ndopts.nd_opts_src_lladdr) { lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, @@ -1280,10 +1275,8 @@ static enum skb_drop_reason ndisc_router_discovery(struct sk_buff *skb) return reason; } - if (!ndisc_parse_options(skb->dev, opt, optlen, &ndopts)) { - ND_PRINTK(2, warn, "RA: invalid ND options\n"); - return reason; - } + if (!ndisc_parse_options(skb->dev, opt, optlen, &ndopts)) + return SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS; if (!ipv6_accept_ra(in6_dev)) { ND_PRINTK(2, info, @@ -1627,7 +1620,7 @@ static enum skb_drop_reason ndisc_redirect_rcv(struct sk_buff *skb) } if (!ndisc_parse_options(skb->dev, msg->opt, ndoptlen, &ndopts)) - return reason; + return SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS; if (!ndopts.nd_opts_rh) { ip6_redirect_no_header(skb, dev_net(skb->dev), |