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[IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl.

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki 2006-03-20 17:07:03 -08:00 committed by David S. Miller
parent e317da9622
commit 09c884d4c3
5 changed files with 36 additions and 1 deletions
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9
Documentation/networking/ip-sysctl.txt
View file

@ -729,6 +729,15 @@ accept_ra_pinfo - BOOLEAN
Functional default: enabled if accept_ra is enabled.
disabled if accept_ra is disabled.
accept_ra_rt_info_max_plen - INTEGER
Maximum prefix length of Route Information in RA.
Route Information w/ prefix larger than or equal to this
variable shall be ignored.
Functional default: 0 if accept_ra_rtr_pref is enabled.
-1 if accept_ra_rtr_pref is disabled.
accept_ra_rtr_pref - BOOLEAN
Accept Router Preference in RA.

4
include/linux/ipv6.h
View file

@ -150,6 +150,9 @@ struct ipv6_devconf {
#ifdef CONFIG_IPV6_ROUTER_PREF
__s32 accept_ra_rtr_pref;
__s32 rtr_probe_interval;
#ifdef CONFIG_IPV6_ROUTE_INFO
__s32 accept_ra_rt_info_max_plen;
#endif
#endif
void *sysctl;
};
@ -177,6 +180,7 @@ enum {
DEVCONF_ACCEPT_RA_PINFO,
DEVCONF_ACCEPT_RA_RTR_PREF,
DEVCONF_RTR_PROBE_INTERVAL,
DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
DEVCONF_MAX
};

1
include/linux/sysctl.h
View file

@ -535,6 +535,7 @@ enum {
NET_IPV6_ACCEPT_RA_PINFO=19,
NET_IPV6_ACCEPT_RA_RTR_PREF=20,
NET_IPV6_RTR_PROBE_INTERVAL=21,
NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
__NET_IPV6_MAX
};

19
net/ipv6/addrconf.c
View file

@ -170,6 +170,9 @@ struct ipv6_devconf ipv6_devconf = {
#ifdef CONFIG_IPV6_ROUTER_PREF
.accept_ra_rtr_pref = 1,
.rtr_probe_interval = 60 * HZ,
#ifdef CONFIG_IPV6_ROUTE_INFO
.accept_ra_rt_info_max_plen = 0,
#endif
#endif
};
@ -197,6 +200,9 @@ static struct ipv6_devconf ipv6_devconf_dflt = {
#ifdef CONFIG_IPV6_ROUTER_PREF
.accept_ra_rtr_pref = 1,
.rtr_probe_interval = 60 * HZ,
#ifdef CONFIG_IPV6_ROUTE_INFO
.accept_ra_rt_info_max_plen = 0,
#endif
#endif
};
@ -3133,6 +3139,9 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf,
#ifdef CONFIG_IPV6_ROUTER_PREF
array[DEVCONF_ACCEPT_RA_RTR_PREF] = cnf->accept_ra_rtr_pref;
array[DEVCONF_RTR_PROBE_INTERVAL] = cnf->rtr_probe_interval;
#ifdef CONFIV_IPV6_ROUTE_INFO
array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen;
#endif
#endif
}
@ -3620,6 +3629,16 @@ static struct addrconf_sysctl_table
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
#ifdef CONFIV_IPV6_ROUTE_INFO
{
.ctl_name = NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN,
.procname = "accept_ra_rt_info_max_plen",
.data = &ipv6_devconf.accept_ra_rt_info_max_plen,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#endif
#endif
{
.ctl_name = 0, /* sentinel */

4
net/ipv6/ndisc.c
View file

@ -1214,11 +1214,13 @@ static void ndisc_router_discovery(struct sk_buff *skb)
}
#ifdef CONFIG_IPV6_ROUTE_INFO
if (ndopts.nd_opts_ri) {
if (in6_dev->cnf.accept_ra_rtr_pref && ndopts.nd_opts_ri) {
struct nd_opt_hdr *p;
for (p = ndopts.nd_opts_ri;
p;
p = ndisc_next_option(p, ndopts.nd_opts_ri_end)) {
if (((struct route_info *)p)->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)
continue;
rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,
&skb->nh.ipv6h->saddr);
}