static struct tbl *get_table_protected(struct datapath *dp)
{
- return rcu_dereference_protected(dp->table, lockdep_is_held(&dp->mutex));
+ return rcu_dereference_protected(dp->table,
+ lockdep_is_held(&dp->mutex));
+}
+
+static struct vport *get_vport_protected(struct datapath *dp, u16 port_no)
+{
+ return rcu_dereference_protected(dp->ports[port_no],
+ lockdep_is_held(&dp->mutex));
}
/* Must be called with rcu_read_lock or RTNL lock. */
const struct vport *port,
int event, unsigned int flags)
{
- const struct datapath *dp = port->dp;
+ struct datapath *dp = port->dp;
int ifindex = vport_get_ifindex(port);
int iflink = vport_get_iflink(port);
struct ifinfomsg *hdr;
NLA_PUT_STRING(skb, IFLA_IFNAME, vport_get_name(port));
NLA_PUT_U32(skb, IFLA_MASTER,
- vport_get_ifindex(rtnl_dereference(dp->ports[ODPP_LOCAL])));
+ vport_get_ifindex(get_vport_protected(dp, ODPP_LOCAL)));
NLA_PUT_U32(skb, IFLA_MTU, vport_get_mtu(port));
#ifdef IFLA_OPERSTATE
NLA_PUT_U8(skb, IFLA_OPERSTATE,
goto err_put_module;
INIT_LIST_HEAD(&dp->port_list);
mutex_init(&dp->mutex);
+ mutex_lock(&dp->mutex);
dp->dp_idx = dp_idx;
for (i = 0; i < DP_N_QUEUES; i++)
skb_queue_head_init(&dp->queues[i]);
/* Allocate table. */
err = -ENOMEM;
- rcu_assign_pointer(dp->table, tbl_create(0));
+ rcu_assign_pointer(dp->table, tbl_create(TBL_MIN_BUCKETS));
if (!dp->table)
goto err_free_dp;
dp->drop_frags = 0;
dp->stats_percpu = alloc_percpu(struct dp_stats_percpu);
- if (!dp->stats_percpu)
+ if (!dp->stats_percpu) {
+ err = -ENOMEM;
goto err_destroy_local_port;
+ }
rcu_assign_pointer(dps[dp_idx], dp);
dp_sysfs_add_dp(dp);
+ mutex_unlock(&dp->mutex);
mutex_unlock(&dp_mutex);
rtnl_unlock();
return 0;
err_destroy_local_port:
- dp_detach_port(dp->ports[ODPP_LOCAL]);
+ dp_detach_port(get_vport_protected(dp, ODPP_LOCAL));
err_destroy_table:
- tbl_destroy(dp->table, NULL);
+ tbl_destroy(get_table_protected(dp), NULL);
err_free_dp:
+ mutex_unlock(&dp->mutex);
kfree(dp);
err_put_module:
module_put(THIS_MODULE);
return err;
}
-static void do_destroy_dp(struct datapath *dp)
+static void destroy_dp_rcu(struct rcu_head *rcu)
{
- struct vport *p, *n;
+ struct datapath *dp = container_of(rcu, struct datapath, rcu);
int i;
- list_for_each_entry_safe (p, n, &dp->port_list, node)
- if (p->port_no != ODPP_LOCAL)
- dp_detach_port(p);
-
- dp_sysfs_del_dp(dp);
-
- rcu_assign_pointer(dps[dp->dp_idx], NULL);
-
- dp_detach_port(dp->ports[ODPP_LOCAL]);
-
- tbl_destroy(dp->table, flow_free_tbl);
-
for (i = 0; i < DP_N_QUEUES; i++)
skb_queue_purge(&dp->queues[i]);
+
+ tbl_destroy((struct tbl __force *)dp->table, flow_free_tbl);
free_percpu(dp->stats_percpu);
kobject_put(&dp->ifobj);
- module_put(THIS_MODULE);
}
static int destroy_dp(int dp_idx)
{
struct datapath *dp;
- int err;
+ int err = 0;
+ struct vport *p, *n;
rtnl_lock();
mutex_lock(&dp_mutex);
dp = get_dp(dp_idx);
- err = -ENODEV;
- if (!dp)
- goto err_unlock;
+ if (!dp) {
+ err = -ENODEV;
+ goto out;
+ }
- do_destroy_dp(dp);
- err = 0;
+ mutex_lock(&dp->mutex);
-err_unlock:
+ list_for_each_entry_safe (p, n, &dp->port_list, node)
+ if (p->port_no != ODPP_LOCAL)
+ dp_detach_port(p);
+
+ dp_sysfs_del_dp(dp);
+ rcu_assign_pointer(dps[dp->dp_idx], NULL);
+ dp_detach_port(get_vport_protected(dp, ODPP_LOCAL));
+
+ mutex_unlock(&dp->mutex);
+ call_rcu(&dp->rcu, destroy_dp_rcu);
+ module_put(THIS_MODULE);
+
+out:
mutex_unlock(&dp_mutex);
rtnl_unlock();
return err;
}
-/* Called with RTNL lock and dp_mutex. */
+/* Called with RTNL lock and dp->mutex. */
static int new_vport(struct datapath *dp, struct odp_port *odp_port, int port_no)
{
struct vport_parms parms;
goto out_unlock_dp;
set_internal_devs_mtu(dp);
- dp_sysfs_add_if(dp->ports[port_no]);
+ dp_sysfs_add_if(get_vport_protected(dp, port_no));
err = put_user(port_no, &portp->port);
if (!dp)
goto out_unlock_rtnl;
- p = dp->ports[port_no];
+ p = get_vport_protected(dp, port_no);
err = -ENOENT;
if (!p)
goto out_unlock_dp;
struct tbl *old_table = get_table_protected(dp);
struct tbl *new_table;
- new_table = tbl_create(0);
+ new_table = tbl_create(TBL_MIN_BUCKETS);
if (!new_table)
return -ENOMEM;
error = -EFAULT;
if (copy_from_user(actions->actions,
- (struct nlattr __user *)flow->actions,
+ (struct nlattr __user __force *)flow->actions,
flow->actions_len))
goto error_free_actions;
error = validate_actions(actions->actions, actions->actions_len);
struct tbl_node *flow_node;
struct sw_flow *flow;
struct tbl *table;
+ struct sw_flow_actions *acts = NULL;
int error;
+ u32 hash;
+ hash = flow_hash(&uf->flow.key);
table = get_table_protected(dp);
- flow_node = tbl_lookup(table, &uf->flow.key, flow_hash(&uf->flow.key), flow_cmp);
+ flow_node = tbl_lookup(table, &uf->flow.key, hash, flow_cmp);
if (!flow_node) {
/* No such flow. */
- struct sw_flow_actions *acts;
-
error = -ENOENT;
if (!(uf->flags & ODPPF_CREATE))
goto error;
rcu_assign_pointer(flow->sf_acts, acts);
/* Put flow in bucket. */
- error = tbl_insert(table, &flow->tbl_node, flow_hash(&flow->key));
+ error = tbl_insert(table, &flow->tbl_node, hash);
if (error)
goto error_free_flow_acts;
return 0;
error_free_flow_acts:
- kfree(flow->sf_acts);
+ kfree(acts);
error_free_flow:
flow->sf_acts = NULL;
flow_put(flow);
u32 i;
for (i = 0; i < flowvec->n_flows; i++) {
- struct odp_flow __user *ufp = (struct odp_flow __user *)&flowvec->flows[i];
+ struct odp_flow __user *ufp = (struct odp_flow __user __force *)&flowvec->flows[i];
struct odp_flow uf;
struct tbl_node *flow_node;
int error;
return 0;
cbdata.dp = dp;
- cbdata.uflows = (struct odp_flow __user *)flowvec->flows;
+ cbdata.uflows = (struct odp_flow __user __force*)flowvec->flows;
cbdata.n_flows = flowvec->n_flows;
cbdata.listed_flows = 0;
err = -EFAULT;
if (copy_from_user(actions->actions,
- (struct nlattr __user *)execute->actions, execute->actions_len))
+ (struct nlattr __user __force *)execute->actions, execute->actions_len))
goto error_free_actions;
err = validate_actions(actions->actions, execute->actions_len);
err = -EFAULT;
if (copy_from_user(skb_put(skb, execute->length),
- (const void __user *)execute->data,
+ (const void __user __force *)execute->data,
execute->length))
goto error_free_skb;
rcu_read_lock();
strncpy(op.devname, vport_get_name(p), sizeof op.devname);
strncpy(op.type, vport_get_type(p), sizeof op.type);
+ vport_get_config(p, op.config);
rcu_read_unlock();
op.port = p->port_no;
static int query_port(struct datapath *dp, struct odp_port __user *uport)
{
struct odp_port port;
+ struct vport *vport;
if (copy_from_user(&port, uport, sizeof port))
return -EFAULT;
if (port.devname[0]) {
- struct vport *vport;
- int err = 0;
-
port.devname[IFNAMSIZ - 1] = '\0';
vport_lock();
- rcu_read_lock();
-
vport = vport_locate(port.devname);
- if (!vport) {
- err = -ENODEV;
- goto error_unlock;
- }
- if (vport->dp != dp) {
- err = -ENOENT;
- goto error_unlock;
- }
-
- port.port = vport->port_no;
-
-error_unlock:
- rcu_read_unlock();
vport_unlock();
- if (err)
- return err;
+ if (!vport)
+ return -ENODEV;
+ if (vport->dp != dp)
+ return -ENOENT;
} else {
if (port.port >= DP_MAX_PORTS)
return -EINVAL;
- if (!dp->ports[port.port])
+
+ vport = get_vport_protected(dp, port.port);
+ if (!vport)
return -ENOENT;
}
- return put_port(dp->ports[port.port], uport);
+ return put_port(vport, uport);
}
static int do_list_ports(struct datapath *dp, struct odp_port __user *uports,
if (copy_from_user(&pv, upv, sizeof pv))
return -EFAULT;
- retval = do_list_ports(dp, (struct odp_port __user *)pv.ports,
+ retval = do_list_ports(dp, (struct odp_port __user __force *)pv.ports,
pv.n_ports);
if (retval < 0)
return retval;
u16 csum_start, csum_offset;
get_skb_csum_pointers(skb, &csum_start, &csum_offset);
+ csum_start -= skb_headroom(skb);
+
BUG_ON(csum_start >= skb_headlen(skb));
retval = skb_copy_and_csum_datagram(skb, csum_start, buf + csum_start,
copy_bytes - csum_start, &csum);
}
static struct file_operations openvswitch_fops = {
+ .owner = THIS_MODULE,
.read = openvswitch_read,
.poll = openvswitch_poll,
.unlocked_ioctl = openvswitch_ioctl,
projects / openvswitch / blobdiff