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[SCTP]: Re-order SCTP initializations to avoid race with sctp_rcv()

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Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sridhar Samudrala 2007-05-04 13:36:30 -07:00 • committed by David S. Miller
parent ce5325c133
commit 827bf12236
3 changed files with 80 additions and 54 deletions
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51
net/sctp/ipv6.c
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@ -992,21 +992,10 @@ static struct sctp_pf sctp_pf_inet6_specific = {
.af = &sctp_ipv6_specific,
};
/* Initialize IPv6 support and register with inet6 stack. */
/* Initialize IPv6 support and register with socket layer. */
int sctp_v6_init(void)
{
int rc = proto_register(&sctpv6_prot, 1);
if (rc)
goto out;
/* Register inet6 protocol. */
rc = -EAGAIN;
if (inet6_add_protocol(&sctpv6_protocol, IPPROTO_SCTP) < 0)
goto out_unregister_sctp_proto;
/* Add SCTPv6(UDP and TCP style) to inetsw6 linked list. */
inet6_register_protosw(&sctpv6_seqpacket_protosw);
inet6_register_protosw(&sctpv6_stream_protosw);
int rc;
/* Register the SCTP specific PF_INET6 functions. */
sctp_register_pf(&sctp_pf_inet6_specific, PF_INET6);
@ -1014,23 +1003,41 @@ int sctp_v6_init(void)
/* Register the SCTP specific AF_INET6 functions. */
sctp_register_af(&sctp_ipv6_specific);
rc = proto_register(&sctpv6_prot, 1);
if (rc)
return rc;
/* Add SCTPv6(UDP and TCP style) to inetsw6 linked list. */
inet6_register_protosw(&sctpv6_seqpacket_protosw);
inet6_register_protosw(&sctpv6_stream_protosw);
return 0;
}
/* Register with inet6 layer. */
int sctp_v6_add_protocol(void)
{
/* Register notifier for inet6 address additions/deletions. */
register_inet6addr_notifier(&sctp_inet6addr_notifier);
rc = 0;
out:
return rc;
out_unregister_sctp_proto:
proto_unregister(&sctpv6_prot);
goto out;
if (inet6_add_protocol(&sctpv6_protocol, IPPROTO_SCTP) < 0)
return -EAGAIN;
return 0;
}
/* IPv6 specific exit support. */
void sctp_v6_exit(void)
{
list_del(&sctp_ipv6_specific.list);
inet6_del_protocol(&sctpv6_protocol, IPPROTO_SCTP);
inet6_unregister_protosw(&sctpv6_seqpacket_protosw);
inet6_unregister_protosw(&sctpv6_stream_protosw);
unregister_inet6addr_notifier(&sctp_inet6addr_notifier);
proto_unregister(&sctpv6_prot);
list_del(&sctp_ipv6_specific.list);
}
/* Unregister with inet6 layer. */
void sctp_v6_del_protocol(void)
{
inet6_del_protocol(&sctpv6_protocol, IPPROTO_SCTP);
unregister_inet6addr_notifier(&sctp_inet6addr_notifier);
}