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[IPV6]: ADDRCONF: Add accept_ra_pinfo sysctl.

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This controls whether we accept Prefix Information in RAs.

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 16:55:26 -08:00 committed by David S. Miller
parent 65f5c7c114
commit c4fd30eb18
5 changed files with 23 additions and 3 deletions
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10
Documentation/networking/ip-sysctl.txt
View file

@ -723,6 +723,12 @@ accept_ra_defrtr - BOOLEAN
Functional default: enabled if accept_ra is enabled. Functional default: enabled if accept_ra is enabled.
disabled if accept_ra is disabled. disabled if accept_ra is disabled.
accept_ra_pinfo - BOOLEAN
Learn Prefix Inforamtion in Router Advertisement.
Functional default: enabled if accept_ra is enabled.
disabled if accept_ra is disabled.
accept_redirects - BOOLEAN accept_redirects - BOOLEAN
Accept Redirects. Accept Redirects.
@ -733,8 +739,8 @@ autoconf - BOOLEAN
Autoconfigure addresses using Prefix Information in Router Autoconfigure addresses using Prefix Information in Router
Advertisements. Advertisements.
Functional default: enabled if accept_ra is enabled. Functional default: enabled if accept_ra_pinfo is enabled.
disabled if accept_ra is disabled. disabled if accept_ra_pinfo is disabled.
dad_transmits - INTEGER dad_transmits - INTEGER
The amount of Duplicate Address Detection probes to send. The amount of Duplicate Address Detection probes to send.

2
include/linux/ipv6.h
View file

@ -146,6 +146,7 @@ struct ipv6_devconf {
#endif #endif
__s32 max_addresses; __s32 max_addresses;
__s32 accept_ra_defrtr; __s32 accept_ra_defrtr;
__s32 accept_ra_pinfo;
void *sysctl; void *sysctl;
}; };
@ -169,6 +170,7 @@ enum {
DEVCONF_MAX_ADDRESSES, DEVCONF_MAX_ADDRESSES,
DEVCONF_FORCE_MLD_VERSION, DEVCONF_FORCE_MLD_VERSION,
DEVCONF_ACCEPT_RA_DEFRTR, DEVCONF_ACCEPT_RA_DEFRTR,
DEVCONF_ACCEPT_RA_PINFO,
DEVCONF_MAX DEVCONF_MAX
}; };

1
include/linux/sysctl.h
View file

@ -532,6 +532,7 @@ enum {
NET_IPV6_MAX_ADDRESSES=16, NET_IPV6_MAX_ADDRESSES=16,
NET_IPV6_FORCE_MLD_VERSION=17, NET_IPV6_FORCE_MLD_VERSION=17,
NET_IPV6_ACCEPT_RA_DEFRTR=18, NET_IPV6_ACCEPT_RA_DEFRTR=18,
NET_IPV6_ACCEPT_RA_PINFO=19,
__NET_IPV6_MAX __NET_IPV6_MAX
}; };

11
net/ipv6/addrconf.c
View file

@ -166,6 +166,7 @@ struct ipv6_devconf ipv6_devconf = {
#endif #endif
.max_addresses = IPV6_MAX_ADDRESSES, .max_addresses = IPV6_MAX_ADDRESSES,
.accept_ra_defrtr = 1, .accept_ra_defrtr = 1,
.accept_ra_pinfo = 1,
}; };
static struct ipv6_devconf ipv6_devconf_dflt = { static struct ipv6_devconf ipv6_devconf_dflt = {
@ -188,6 +189,7 @@ static struct ipv6_devconf ipv6_devconf_dflt = {
#endif #endif
.max_addresses = IPV6_MAX_ADDRESSES, .max_addresses = IPV6_MAX_ADDRESSES,
.accept_ra_defrtr = 1, .accept_ra_defrtr = 1,
.accept_ra_pinfo = 1,
}; };
/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */ /* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
@ -3119,6 +3121,7 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf,
#endif #endif
array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses; array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses;
array[DEVCONF_ACCEPT_RA_DEFRTR] = cnf->accept_ra_defrtr; array[DEVCONF_ACCEPT_RA_DEFRTR] = cnf->accept_ra_defrtr;
array[DEVCONF_ACCEPT_RA_PINFO] = cnf->accept_ra_pinfo;
} }
static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
@ -3579,6 +3582,14 @@ static struct addrconf_sysctl_table
.mode = 0644, .mode = 0644,
.proc_handler = &proc_dointvec, .proc_handler = &proc_dointvec,
}, },
{
.ctl_name = NET_IPV6_ACCEPT_RA_PINFO,
.procname = "accept_ra_pinfo",
.data = &ipv6_devconf.accept_ra_pinfo,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{ {
.ctl_name = 0, /* sentinel */ .ctl_name = 0, /* sentinel */
} }

2
net/ipv6/ndisc.c
View file

@ -1191,7 +1191,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
NEIGH_UPDATE_F_ISROUTER); NEIGH_UPDATE_F_ISROUTER);
} }
if (ndopts.nd_opts_pi) { if (in6_dev->cnf.accept_ra_pinfo && ndopts.nd_opts_pi) {
struct nd_opt_hdr *p; struct nd_opt_hdr *p;
for (p = ndopts.nd_opts_pi; for (p = ndopts.nd_opts_pi;
p; p;