diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/addrconf.c | 11 | ||||
| -rw-r--r-- | net/ipv6/exthdrs.c | 40 |
2 files changed, 45 insertions, 6 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 58cb669a27c..f5af4ca804e 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -173,6 +173,7 @@ struct ipv6_devconf ipv6_devconf __read_mostly = { #endif #endif .proxy_ndp = 0, + .accept_source_route = 0, /* we do not accept RH0 by default. */ }; static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = { @@ -204,6 +205,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = { #endif #endif .proxy_ndp = 0, + .accept_source_route = 0, /* we do not accept RH0 by default. */ }; /* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */ @@ -3400,6 +3402,7 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf, #endif #endif array[DEVCONF_PROXY_NDP] = cnf->proxy_ndp; + array[DEVCONF_ACCEPT_SOURCE_ROUTE] = cnf->accept_source_route; } static inline size_t inet6_if_nlmsg_size(void) @@ -3920,6 +3923,14 @@ static struct addrconf_sysctl_table .proc_handler = &proc_dointvec, }, { + .ctl_name = NET_IPV6_ACCEPT_SOURCE_ROUTE, + .procname = "accept_source_route", + .data = &ipv6_devconf.accept_source_route, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { .ctl_name = 0, /* sentinel */ } }, diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c index 0711f92d6a1..5fd7cf97d95 100644 --- a/net/ipv6/exthdrs.c +++ b/net/ipv6/exthdrs.c @@ -363,10 +363,27 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp) struct inet6_skb_parm *opt = IP6CB(skb); struct in6_addr *addr = NULL; struct in6_addr daddr; + struct inet6_dev *idev; int n, i; - struct ipv6_rt_hdr *hdr; struct rt0_hdr *rthdr; + int accept_source_route = ipv6_devconf.accept_source_route; + + if (accept_source_route < 0 || + ((idev = in6_dev_get(skb->dev)) == NULL)) { + kfree_skb(skb); + return -1; + } + if (idev->cnf.accept_source_route < 0) { + in6_dev_put(idev); + kfree_skb(skb); + return -1; + } + + if (accept_source_route > idev->cnf.accept_source_route) + accept_source_route = idev->cnf.accept_source_route; + + in6_dev_put(idev); if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) || !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) { @@ -378,6 +395,22 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp) hdr = (struct ipv6_rt_hdr *) skb->h.raw; + switch (hdr->type) { +#ifdef CONFIG_IPV6_MIP6 + break; +#endif + case IPV6_SRCRT_TYPE_0: + if (accept_source_route > 0) + break; + kfree_skb(skb); + return -1; + default: + IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), + IPSTATS_MIB_INHDRERRORS); + icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->type) - skb->nh.raw); + return -1; + } + if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr) || skb->pkt_type != PACKET_HOST) { IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), @@ -435,11 +468,6 @@ looped_back: } break; #endif - default: - IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), - IPSTATS_MIB_INHDRERRORS); - icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->type) - skb->nh.raw); - return -1; } /* |