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Commit 09c884d4 authored by YOSHIFUJI Hideaki's avatar YOSHIFUJI Hideaki Committed by David S. Miller
Browse files

[IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl. 



Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e317da96

Documentation/networking/ip-sysctl.txt

+9 −0
Original line number Diff line number Diff line
@@ -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.

include/linux/ipv6.h

+4 −0
Original line number Diff line number Diff line
@@ -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

};

include/linux/sysctl.h

+1 −0
Original line number Diff line number Diff line
@@ -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

};

net/ipv6/addrconf.c

+19 −0
Original line number Diff line number Diff line
@@ -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 */

net/ipv6/ndisc.c

+3 −1
Original line number Diff line number Diff line
@@ -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);

		}