*
* Virtual Server: Network Support
*
- * Copyright (C) 2003-2005 Herbert Pötzl
+ * Copyright (C) 2003-2006 Herbert Pötzl
*
* V0.01 broken out from vcontext V0.05
* V0.02 cleaned up implementation
* V0.03 added equiv nx commands
* V0.04 switch to RCU based hash
* V0.05 and back to locking again
+ * V0.06 have __create claim() the nxi
*
*/
static inline void __unhash_nx_info(struct nx_info *nxi)
{
- vxd_assert_lock(&nx_info_hash_lock);
vxdprintk(VXD_CBIT(nid, 4),
"__unhash_nx_info: %p[#%d]", nxi, nxi->nx_id);
+ spin_lock(&nx_info_hash_lock);
/* context must be hashed */
BUG_ON(!nx_info_state(nxi, NXS_HASHED));
nxi->nx_state &= ~NXS_HASHED;
hlist_del(&nxi->nx_hlist);
+ spin_unlock(&nx_info_hash_lock);
}
/* __create_nx_info()
* create the requested context
- * get() and hash it */
+ * get(), claim() and hash it */
static struct nx_info * __create_nx_info(int id)
{
/* new context */
vxdprintk(VXD_CBIT(nid, 0),
"create_nx_info(%d) = %p (new)", id, new);
+ claim_nx_info(new, NULL);
__hash_nx_info(get_nx_info(new));
nxi = new, new = NULL;
void unhash_nx_info(struct nx_info *nxi)
{
__shutdown_nx_info(nxi);
- spin_lock(&nx_info_hash_lock);
__unhash_nx_info(nxi);
- spin_unlock(&nx_info_hash_lock);
}
#ifdef CONFIG_VSERVER_LEGACYNET
if (old_nxi)
release_nx_info(old_nxi, p);
+ ret = 0;
out:
put_nx_info(old_nxi);
return ret;
void nx_set_persistent(struct nx_info *nxi)
{
+ vxdprintk(VXD_CBIT(nid, 6),
+ "nx_set_persistent(%p[#%d])", nxi, nxi->nx_id);
+
get_nx_info(nxi);
- claim_nx_info(nxi, current);
+ claim_nx_info(nxi, NULL);
}
void nx_clear_persistent(struct nx_info *nxi)
vxdprintk(VXD_CBIT(nid, 6),
"nx_clear_persistent(%p[#%d])", nxi, nxi->nx_id);
- release_nx_info(nxi, current);
+ release_nx_info(nxi, NULL);
put_nx_info(nxi);
}
/* initial flags */
new_nxi->nx_flags = vc_data.flagword;
- /* get a reference for persistent contexts */
- if ((vc_data.flagword & NXF_PERSISTENT))
- nx_set_persistent(new_nxi);
-
ret = -ENOEXEC;
if (vs_net_change(new_nxi, VSC_NETUP))
- goto out_unhash;
+ goto out;
+
ret = nx_migrate_task(current, new_nxi);
- if (!ret) {
- /* return context id on success */
- ret = new_nxi->nx_id;
+ if (ret)
goto out;
- }
-out_unhash:
- /* prepare for context disposal */
- new_nxi->nx_state |= NXS_SHUTDOWN;
+
+ /* return context id on success */
+ ret = new_nxi->nx_id;
+
+ /* get a reference for persistent contexts */
if ((vc_data.flagword & NXF_PERSISTENT))
- nx_clear_persistent(new_nxi);
- __unhash_nx_info(new_nxi);
+ nx_set_persistent(new_nxi);
out:
+ release_nx_info(new_nxi, NULL);
put_nx_info(new_nxi);
return ret;
}