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Commit fbea49e1 authored by YOSHIFUJI Hideaki's avatar YOSHIFUJI Hideaki Committed by David S. Miller
Browse files

[IPV6] NDISC: Add proxy_ndp sysctl. 



We do not always need proxy NDP functionality even we
enable forwarding.

Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 62dd9318

Documentation/networking/ip-sysctl.txt

+3 −0
Original line number Diff line number Diff line
@@ -765,6 +765,9 @@ conf/all/forwarding - BOOLEAN 


	This referred to as global forwarding.



proxy_ndp - BOOLEAN

	Do proxy ndp.



conf/interface/*:

	Change special settings per interface.

include/linux/ipv6.h

+2 −0
Original line number Diff line number Diff line
@@ -176,6 +176,7 @@ struct ipv6_devconf { 
	__s32		accept_ra_rt_info_max_plen;

#endif

#endif

	__s32		proxy_ndp;

	void		*sysctl;

};
@@ -203,6 +204,7 @@ enum { 
	DEVCONF_ACCEPT_RA_RTR_PREF,

	DEVCONF_RTR_PROBE_INTERVAL,

	DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,

	DEVCONF_PROXY_NDP,

	DEVCONF_MAX

};

include/linux/sysctl.h

+1 −0
Original line number Diff line number Diff line
@@ -556,6 +556,7 @@ enum { 
	NET_IPV6_ACCEPT_RA_RTR_PREF=20,

	NET_IPV6_RTR_PROBE_INTERVAL=21,

	NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,

	NET_IPV6_PROXY_NDP=23,

	__NET_IPV6_MAX

};

net/ipv6/addrconf.c

+11 −0
Original line number Diff line number Diff line
@@ -175,6 +175,7 @@ struct ipv6_devconf ipv6_devconf __read_mostly = { 
	.accept_ra_rt_info_max_plen = 0,

#endif

#endif

	.proxy_ndp		= 0,

};



static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
@@ -205,6 +206,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = { 
	.accept_ra_rt_info_max_plen = 0,

#endif

#endif

	.proxy_ndp		= 0,

};



/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
@@ -3337,6 +3339,7 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf, 
	array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen;

#endif

#endif

	array[DEVCONF_PROXY_NDP] = cnf->proxy_ndp;

}



/* Maximum length of ifinfomsg attributes */
@@ -3859,6 +3862,14 @@ static struct addrconf_sysctl_table 
		},

#endif

#endif

		{

			.ctl_name	=	NET_IPV6_PROXY_NDP,

			.procname	=	"proxy_ndp",

			.data		=	&ipv6_devconf.proxy_ndp,

			.maxlen		=	sizeof(int),

			.mode		=	0644,

			.proc_handler	=	&proc_dointvec,

		},

		{

			.ctl_name	=	0,	/* sentinel */

		}

net/ipv6/ip6_output.c

+3 −1
Original line number Diff line number Diff line
@@ -412,7 +412,9 @@ int ip6_forward(struct sk_buff *skb) 
		return -ETIMEDOUT;

	}



	if (pneigh_lookup(&nd_tbl, &hdr->daddr, skb->dev, 0)) {

	/* XXX: idev->cnf.proxy_ndp? */

	if (ipv6_devconf.proxy_ndp &&

	    pneigh_lookup(&nd_tbl, &hdr->daddr, skb->dev, 0)) {

		int proxied = ip6_forward_proxy_check(skb);

		if (proxied > 0)

			return ip6_input(skb);