Functional default: enabled if local forwarding is disabled.
disabled if local forwarding is enabled.
+accept_source_route - INTEGER
+ Accept source routing (routing extension header).
+
+ > 0: Accept routing header.
+ = 0: Accept only routing header type 2.
+ < 0: Do not accept routing header.
+
+ Default: 0
+
autoconf - BOOLEAN
Autoconfigure addresses using Prefix Information in Router
Advertisements.
__s32 max_desync_factor;
#endif
__s32 max_addresses;
+ __s32 accept_source_route;
void *sysctl;
};
DEVCONF_MAX_DESYNC_FACTOR,
DEVCONF_MAX_ADDRESSES,
DEVCONF_FORCE_MLD_VERSION,
+ __DEVCONF_ACCEPT_RA_DEFRTR,
+ __DEVCONF_ACCEPT_RA_PINFO,
+ __DEVCONF_ACCEPT_RA_RTR_PREF,
+ __DEVCONF_RTR_PROBE_INTERVAL,
+ __DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
+ __DEVCONF_PROXY_NDP,
+ __DEVCONF_OPTIMISTIC_DAD,
+ DEVCONF_ACCEPT_SOURCE_ROUTE,
DEVCONF_MAX
};
NET_IPV6_MAX_DESYNC_FACTOR=15,
NET_IPV6_MAX_ADDRESSES=16,
NET_IPV6_FORCE_MLD_VERSION=17,
+ NET_IPV6_ACCEPT_SOURCE_ROUTE=25,
__NET_IPV6_MAX
};
.max_desync_factor = MAX_DESYNC_FACTOR,
#endif
.max_addresses = IPV6_MAX_ADDRESSES,
+ .accept_source_route = 0,
};
static struct ipv6_devconf ipv6_devconf_dflt = {
.max_desync_factor = MAX_DESYNC_FACTOR,
#endif
.max_addresses = IPV6_MAX_ADDRESSES,
+ .accept_source_route = 0,
};
/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
array[DEVCONF_MAX_DESYNC_FACTOR] = cnf->max_desync_factor;
#endif
array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses;
+ array[DEVCONF_ACCEPT_SOURCE_ROUTE] = cnf->accept_source_route;
}
/* Maximum length of ifinfomsg attributes */
.mode = 0644,
.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 */
}
struct inet6_skb_parm *opt = IP6CB(skb);
struct in6_addr *addr;
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))) {
hdr = (struct ipv6_rt_hdr *) skb->h.raw;
+ switch (hdr->type) {
+ case IPV6_SRCRT_TYPE_0:
+ if (accept_source_route > 0)
+ break;
+ kfree_skb(skb);
+ return -1;
+ default:
+ IP6_INC_STATS_BH(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(IPSTATS_MIB_INADDRERRORS);
return 1;
}
- if (hdr->type != IPV6_SRCRT_TYPE_0) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
- icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->type) - skb->nh.raw);
- return -1;
- }
-
if (hdr->hdrlen & 0x01) {
IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->hdrlen) - skb->nh.raw);