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[IPV6]: make extended headers to return an error at initialization

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This patch factorize the code for the differents init functions for rthdr,
nodata, destopt in a single function exthdrs_init.
This function returns an error so the af_inet6 module can check correctly
the initialization.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Lezcano 2007-12-11 02:23:54 -08:00 committed by David S. Miller
parent 0a3e78ac2c
commit 248b238dc9
3 changed files with 49 additions and 32 deletions
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5
include/net/transp_v6.h
View file

@ -17,10 +17,9 @@ extern struct proto tcpv6_prot;
struct flowi;
/* extention headers */
extern void ipv6_rthdr_init(void);
extern int ipv6_exthdrs_init(void);
extern void ipv6_exthdrs_exit(void);
extern void ipv6_frag_init(void);
extern void ipv6_nodata_init(void);
extern void ipv6_destopt_init(void);
/* transport protocols */
extern void rawv6_init(void);

10
net/ipv6/af_inet6.c
View file

@ -859,10 +859,11 @@ static int __init inet6_init(void)
goto addrconf_fail;
/* Init v6 extension headers. */
ipv6_rthdr_init();
err = ipv6_exthdrs_init();
if (err)
goto ipv6_exthdrs_fail;
ipv6_frag_init();
ipv6_nodata_init();
ipv6_destopt_init();
/* Init v6 transport protocols. */
udpv6_init();
@ -874,6 +875,8 @@ static int __init inet6_init(void)
out:
return err;
ipv6_exthdrs_fail:
addrconf_cleanup();
addrconf_fail:
ip6_flowlabel_cleanup();
ip6_flowlabel_fail:
@ -932,6 +935,7 @@ static void __exit inet6_exit(void)
/* Cleanup code parts. */
ipv6_packet_cleanup();
ipv6_exthdrs_exit();
addrconf_cleanup();
ip6_flowlabel_cleanup();
ip6_route_cleanup();

66
net/ipv6/exthdrs.c
View file

@ -308,28 +308,6 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
return -1;
}
static struct inet6_protocol destopt_protocol = {
.handler = ipv6_destopt_rcv,
.flags = INET6_PROTO_NOPOLICY | INET6_PROTO_GSO_EXTHDR,
};
void __init ipv6_destopt_init(void)
{
if (inet6_add_protocol(&destopt_protocol, IPPROTO_DSTOPTS) < 0)
printk(KERN_ERR "ipv6_destopt_init: Could not register protocol\n");
}
static struct inet6_protocol nodata_protocol = {
.handler = dst_discard,
.flags = INET6_PROTO_NOPOLICY,
};
void __init ipv6_nodata_init(void)
{
if (inet6_add_protocol(&nodata_protocol, IPPROTO_NONE) < 0)
printk(KERN_ERR "ipv6_nodata_init: Could not register protocol\n");
}
/********************************
Routing header.
********************************/
@ -527,12 +505,48 @@ static struct inet6_protocol rthdr_protocol = {
.flags = INET6_PROTO_NOPOLICY | INET6_PROTO_GSO_EXTHDR,
};
void __init ipv6_rthdr_init(void)
{
if (inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING) < 0)
printk(KERN_ERR "ipv6_rthdr_init: Could not register protocol\n");
static struct inet6_protocol destopt_protocol = {
.handler = ipv6_destopt_rcv,
.flags = INET6_PROTO_NOPOLICY | INET6_PROTO_GSO_EXTHDR,
};
static struct inet6_protocol nodata_protocol = {
.handler = dst_discard,
.flags = INET6_PROTO_NOPOLICY,
};
int __init ipv6_exthdrs_init(void)
{
int ret;
ret = inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING);
if (ret)
goto out;
ret = inet6_add_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
if (ret)
goto out_rthdr;
ret = inet6_add_protocol(&nodata_protocol, IPPROTO_NONE);
if (ret)
goto out_destopt;
out:
return ret;
out_rthdr:
inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);
out_destopt:
inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
goto out;
};
void ipv6_exthdrs_exit(void)
{
inet6_del_protocol(&nodata_protocol, IPPROTO_NONE);
inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);
}
/**********************************
Hop-by-hop options.
**********************************/