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authorDaniel Lezcano <dlezcano@fr.ibm.com>2007-12-11 02:25:01 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:57:12 -0800
commit87c3efbfdd1f98af14a1f60ff19f73d9a8d8da98 (patch)
tree938179d4904406a82d35018c0d7b895505213124 /net/ipv6
parent853cbbaaa4ccdf221be5ab6afe967aa9998546b7 (diff)
downloadop-kernel-dev-87c3efbfdd1f98af14a1f60ff19f73d9a8d8da98.zip
op-kernel-dev-87c3efbfdd1f98af14a1f60ff19f73d9a8d8da98.tar.gz
[IPV6]: make inet6_register_protosw to return an error code
This patch makes the inet6_register_protosw to return an error code. The different protocols can be aware the registration was successful or not and can pass the error to the initial caller, af_inet6. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/af_inet6.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index a75c4bc..53b06de 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -565,21 +565,23 @@ static struct inet_protosw rawv6_protosw = {
.flags = INET_PROTOSW_REUSE,
};
-void
-inet6_register_protosw(struct inet_protosw *p)
+int inet6_register_protosw(struct inet_protosw *p)
{
struct list_head *lh;
struct inet_protosw *answer;
- int protocol = p->protocol;
struct list_head *last_perm;
+ int protocol = p->protocol;
+ int ret;
spin_lock_bh(&inetsw6_lock);
+ ret = -EINVAL;
if (p->type >= SOCK_MAX)
goto out_illegal;
/* If we are trying to override a permanent protocol, bail. */
answer = NULL;
+ ret = -EPERM;
last_perm = &inetsw6[p->type];
list_for_each(lh, &inetsw6[p->type]) {
answer = list_entry(lh, struct inet_protosw, list);
@@ -603,9 +605,10 @@ inet6_register_protosw(struct inet_protosw *p)
* system automatically returns to the old behavior.
*/
list_add_rcu(&p->list, last_perm);
+ ret = 0;
out:
spin_unlock_bh(&inetsw6_lock);
- return;
+ return ret;
out_permanent:
printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
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