/*
- * Copyright (c) 2007, 2008, 2009, 2010, 2011 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2011 Nicira Networks.
*
- * Significant portions of this file may be copied from parts of the Linux
- * kernel, by Linus Torvalds and others.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
*/
-/* Functions for managing the dp interface/device. */
-
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/openvswitch.h>
#include <linux/rculist.h>
#include <linux/dmi.h>
-#include <net/inet_ecn.h>
#include <net/genetlink.h>
#include "checksum.h"
#include "datapath.h"
-#include "actions.h"
#include "flow.h"
#include "vlan.h"
#include "tunnel.h"
#include "vport-internal_dev.h"
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) || \
- LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)
-#error Kernels before 2.6.18 or after 3.1 are not supported by this version of Open vSwitch.
+ LINUX_VERSION_CODE > KERNEL_VERSION(3,2,0)
+#error Kernels before 2.6.18 or after 3.2 are not supported by this version of Open vSwitch.
#endif
int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
const struct dp_upcall_info *);
/* Must be called with rcu_read_lock, genl_mutex, or RTNL lock. */
-struct datapath *get_dp(int dp_ifindex)
+static struct datapath *get_dp(int dp_ifindex)
{
struct datapath *dp = NULL;
struct net_device *dev;
return dp;
}
-EXPORT_SYMBOL_GPL(get_dp);
/* Must be called with genl_mutex. */
static struct flow_table *get_table_protected(struct datapath *dp)
/* Must be called with rcu_read_lock or RTNL lock. */
const char *dp_name(const struct datapath *dp)
{
- return vport_get_name(rcu_dereference_rtnl(dp->ports[OVSP_LOCAL]));
+ struct vport *vport = rcu_dereference_rtnl(dp->ports[OVSP_LOCAL]);
+ return vport->ops->get_name(vport);
}
static int get_dpifindex(struct datapath *dp)
local = get_vport_protected(dp, OVSP_LOCAL);
if (local)
- ifindex = vport_get_ifindex(local);
+ ifindex = local->ops->get_ifindex(local);
else
ifindex = 0;
int event, unsigned int flags)
{
struct datapath *dp = port->dp;
- int ifindex = vport_get_ifindex(port);
struct ifinfomsg *hdr;
struct nlmsghdr *nlh;
- if (ifindex < 0)
- return ifindex;
+ if (!port->ops->get_ifindex)
+ return -ENODEV;
nlh = nlmsg_put(skb, 0, 0, event, sizeof(*hdr), flags);
if (nlh == NULL)
hdr->ifi_family = AF_BRIDGE;
hdr->__ifi_pad = 0;
hdr->ifi_type = ARPHRD_ETHER;
- hdr->ifi_index = ifindex;
- hdr->ifi_flags = vport_get_flags(port);
+ hdr->ifi_index = port->ops->get_ifindex(port);
+ hdr->ifi_flags = port->ops->get_dev_flags(port);
hdr->ifi_change = 0;
- NLA_PUT_STRING(skb, IFLA_IFNAME, vport_get_name(port));
+ NLA_PUT_STRING(skb, IFLA_IFNAME, port->ops->get_name(port));
NLA_PUT_U32(skb, IFLA_MASTER, get_dpifindex(dp));
- NLA_PUT_U32(skb, IFLA_MTU, vport_get_mtu(port));
+ NLA_PUT_U32(skb, IFLA_MTU, port->ops->get_mtu(port));
#ifdef IFLA_OPERSTATE
NLA_PUT_U8(skb, IFLA_OPERSTATE,
- vport_is_running(port)
- ? vport_get_operstate(port)
+ port->ops->is_running(port)
+ ? port->ops->get_operstate(port)
: IF_OPER_DOWN);
#endif
- NLA_PUT(skb, IFLA_ADDRESS, ETH_ALEN, vport_get_addr(port));
+ NLA_PUT(skb, IFLA_ADDRESS, ETH_ALEN, port->ops->get_addr(port));
return nlmsg_end(skb, nlh);
static void dp_ifinfo_notify(int event, struct vport *port)
{
struct sk_buff *skb;
- int err = -ENOBUFS;
+ int err;
skb = nlmsg_new(br_nlmsg_size(), GFP_KERNEL);
- if (skb == NULL)
- goto errout;
+ if (!skb) {
+ err = -ENOBUFS;
+ goto err;
+ }
err = dp_fill_ifinfo(skb, port, event, 0);
if (err < 0) {
- /* -EMSGSIZE implies BUG in br_nlmsg_size() */
- WARN_ON(err == -EMSGSIZE);
- kfree_skb(skb);
- goto errout;
+ if (err == -ENODEV) {
+ goto out;
+ } else {
+ /* -EMSGSIZE implies BUG in br_nlmsg_size() */
+ WARN_ON(err == -EMSGSIZE);
+ goto err;
+ }
}
+
rtnl_notify(skb, &init_net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
+
return;
-errout:
- if (err < 0)
- rtnl_set_sk_err(&init_net, RTNLGRP_LINK, err);
+err:
+ rtnl_set_sk_err(&init_net, RTNLGRP_LINK, err);
+out:
+ kfree_skb(skb);
}
static void release_dp(struct kobject *kobj)
{
struct datapath *dp = container_of(rcu, struct datapath, rcu);
- flow_tbl_destroy(dp->table);
+ flow_tbl_destroy((__force struct flow_table *)dp->table);
free_percpu(dp->stats_percpu);
kobject_put(&dp->ifobj);
}
write_seqcount_end(&stats->seqlock);
}
-static void copy_and_csum_skb(struct sk_buff *skb, void *to)
-{
- u16 csum_start, csum_offset;
- __wsum csum;
-
- get_skb_csum_pointers(skb, &csum_start, &csum_offset);
- csum_start -= skb_headroom(skb);
-
- skb_copy_bits(skb, 0, to, csum_start);
-
- csum = skb_copy_and_csum_bits(skb, csum_start, to + csum_start,
- skb->len - csum_start, 0);
- *(__sum16 *)(to + csum_start + csum_offset) = csum_fold(csum);
-}
-
static struct genl_family dp_packet_genl_family = {
.id = GENL_ID_GENERATE,
.hdrsize = sizeof(struct ovs_header),
* properly mark later fragments.
*/
later_key = *upcall_info->key;
- later_key.ip.tos_frag &= ~OVS_FRAG_TYPE_MASK;
- later_key.ip.tos_frag |= OVS_FRAG_TYPE_LATER;
+ later_key.ip.frag = OVS_FRAG_TYPE_LATER;
later_info = *upcall_info;
later_info.key = &later_key;
const struct dp_upcall_info *upcall_info)
{
struct ovs_header *upcall;
+ struct sk_buff *nskb = NULL;
struct sk_buff *user_skb; /* to be queued to userspace */
struct nlattr *nla;
unsigned int len;
int err;
- err = vlan_deaccel_tag(skb);
- if (unlikely(err))
- return err;
+ if (vlan_tx_tag_present(skb)) {
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (!nskb)
+ return -ENOMEM;
+
+ err = vlan_deaccel_tag(nskb);
+ if (err)
+ return err;
+
+ skb = nskb;
+ }
- if (nla_attr_size(skb->len) > USHRT_MAX)
- return -EFBIG;
+ if (nla_attr_size(skb->len) > USHRT_MAX) {
+ err = -EFBIG;
+ goto out;
+ }
len = sizeof(struct ovs_header);
len += nla_total_size(skb->len);
len += nla_total_size(8);
user_skb = genlmsg_new(len, GFP_ATOMIC);
- if (!user_skb)
- return -ENOMEM;
+ if (!user_skb) {
+ err = -ENOMEM;
+ goto out;
+ }
upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family,
0, upcall_info->cmd);
nla_get_u64(upcall_info->userdata));
nla = __nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, skb->len);
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- copy_and_csum_skb(skb, nla_data(nla));
- else
- skb_copy_bits(skb, 0, nla_data(nla), skb->len);
- return genlmsg_unicast(&init_net, user_skb, upcall_info->pid);
+ skb_copy_and_csum_dev(skb, nla_data(nla));
+
+ err = genlmsg_unicast(&init_net, user_skb, upcall_info->pid);
+
+out:
+ kfree_skb(nskb);
+ return err;
}
/* Called with genl_mutex. */
return validate_actions(actions, key, depth + 1);
}
-static int validate_action_key(const struct nlattr *a,
- const struct sw_flow_key *flow_key)
+static int validate_set(const struct nlattr *a,
+ const struct sw_flow_key *flow_key)
{
- int act_type = nla_type(a);
const struct nlattr *ovs_key = nla_data(a);
int key_type = nla_type(ovs_key);
nla_len(ovs_key) != ovs_key_lens[key_type])
return -EINVAL;
-#define ACTION(act, key) (((act) << 8) | (key))
-
- switch (ACTION(act_type, key_type)) {
+ switch (key_type) {
const struct ovs_key_ipv4 *ipv4_key;
- const struct ovs_key_8021q *q_key;
-
- case ACTION(OVS_ACTION_ATTR_SET, OVS_KEY_ATTR_PRIORITY):
- case ACTION(OVS_ACTION_ATTR_SET, OVS_KEY_ATTR_TUN_ID):
- case ACTION(OVS_ACTION_ATTR_SET, OVS_KEY_ATTR_ETHERNET):
- break;
- case ACTION(OVS_ACTION_ATTR_PUSH, OVS_KEY_ATTR_8021Q):
- q_key = nla_data(ovs_key);
- if (q_key->q_tpid != htons(ETH_P_8021Q))
- return -EINVAL;
-
- if (q_key->q_tci & htons(VLAN_TAG_PRESENT))
- return -EINVAL;
+ case OVS_KEY_ATTR_PRIORITY:
+ case OVS_KEY_ATTR_TUN_ID:
+ case OVS_KEY_ATTR_ETHERNET:
break;
- case ACTION(OVS_ACTION_ATTR_SET, OVS_KEY_ATTR_IPV4):
+ case OVS_KEY_ATTR_IPV4:
if (flow_key->eth.type != htons(ETH_P_IP))
return -EINVAL;
if (ipv4_key->ipv4_proto != flow_key->ip.proto)
return -EINVAL;
- if (ipv4_key->ipv4_tos & INET_ECN_MASK)
- return -EINVAL;
-
- if (ipv4_key->ipv4_frag !=
- (flow_key->ip.tos_frag & OVS_FRAG_TYPE_MASK))
+ if (ipv4_key->ipv4_frag != flow_key->ip.frag)
return -EINVAL;
break;
- case ACTION(OVS_ACTION_ATTR_SET, OVS_KEY_ATTR_TCP):
+ case OVS_KEY_ATTR_TCP:
if (flow_key->ip.proto != IPPROTO_TCP)
return -EINVAL;
break;
- case ACTION(OVS_ACTION_ATTR_SET, OVS_KEY_ATTR_UDP):
+ case OVS_KEY_ATTR_UDP:
if (flow_key->ip.proto != IPPROTO_UDP)
return -EINVAL;
default:
return -EINVAL;
}
-#undef ACTION
+
return 0;
}
nla_for_each_nested(a, attr, rem) {
/* Expected argument lengths, (u32)-1 for variable length. */
static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = {
- [OVS_ACTION_ATTR_OUTPUT] = 4,
+ [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32),
[OVS_ACTION_ATTR_USERSPACE] = (u32)-1,
- [OVS_ACTION_ATTR_PUSH] = (u32)-1,
- [OVS_ACTION_ATTR_POP] = 2,
+ [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan),
+ [OVS_ACTION_ATTR_POP_VLAN] = 0,
[OVS_ACTION_ATTR_SET] = (u32)-1,
[OVS_ACTION_ATTR_SAMPLE] = (u32)-1
};
+ const struct ovs_action_push_vlan *vlan;
int type = nla_type(a);
if (type > OVS_ACTION_ATTR_MAX ||
break;
- case OVS_ACTION_ATTR_POP:
- if (nla_get_u16(a) != OVS_KEY_ATTR_8021Q)
+ case OVS_ACTION_ATTR_POP_VLAN:
+ break;
+
+ case OVS_ACTION_ATTR_PUSH_VLAN:
+ vlan = nla_data(a);
+ if (vlan->vlan_tpid != htons(ETH_P_8021Q))
+ return -EINVAL;
+ if (!(vlan->vlan_tci & htons(VLAN_TAG_PRESENT)))
return -EINVAL;
break;
case OVS_ACTION_ATTR_SET:
- case OVS_ACTION_ATTR_PUSH:
- err = validate_action_key(a, key);
+ err = validate_set(a, key);
if (err)
return err;
break;
u32 pid, u32 seq, u32 flags, u8 cmd)
{
struct ovs_header *ovs_header;
- struct nlattr *nla;
+ struct ovs_dp_stats dp_stats;
int err;
ovs_header = genlmsg_put(skb, pid, seq, &dp_datapath_genl_family,
if (err)
goto nla_put_failure;
- nla = nla_reserve(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats));
- if (!nla)
- goto nla_put_failure;
- get_dp_stats(dp, nla_data(nla));
+ get_dp_stats(dp, &dp_stats);
+ NLA_PUT(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats), &dp_stats);
return genlmsg_end(skb, ovs_header);
u32 pid, u32 seq, u32 flags, u8 cmd)
{
struct ovs_header *ovs_header;
- struct nlattr *nla;
+ struct ovs_vport_stats vport_stats;
int err;
ovs_header = genlmsg_put(skb, pid, seq, &dp_vport_genl_family,
ovs_header->dp_ifindex = get_dpifindex(vport->dp);
NLA_PUT_U32(skb, OVS_VPORT_ATTR_PORT_NO, vport->port_no);
- NLA_PUT_U32(skb, OVS_VPORT_ATTR_TYPE, vport_get_type(vport));
- NLA_PUT_STRING(skb, OVS_VPORT_ATTR_NAME, vport_get_name(vport));
+ NLA_PUT_U32(skb, OVS_VPORT_ATTR_TYPE, vport->ops->type);
+ NLA_PUT_STRING(skb, OVS_VPORT_ATTR_NAME, vport->ops->get_name(vport));
NLA_PUT_U32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_pid);
- nla = nla_reserve(skb, OVS_VPORT_ATTR_STATS,
- sizeof(struct ovs_vport_stats));
- if (!nla)
- goto nla_put_failure;
-
- vport_get_stats(vport, nla_data(nla));
+ vport_get_stats(vport, &vport_stats);
+ NLA_PUT(skb, OVS_VPORT_ATTR_STATS, sizeof(struct ovs_vport_stats),
+ &vport_stats);
- NLA_PUT(skb, OVS_VPORT_ATTR_ADDRESS, ETH_ALEN, vport_get_addr(vport));
+ NLA_PUT(skb, OVS_VPORT_ATTR_ADDRESS, ETH_ALEN,
+ vport->ops->get_addr(vport));
err = vport_get_options(vport, skb);
if (err == -EMSGSIZE)
err = 0;
if (a[OVS_VPORT_ATTR_TYPE] &&
- nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport_get_type(vport))
+ nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type)
err = -EINVAL;
if (!err && a[OVS_VPORT_ATTR_OPTIONS])
BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > sizeof(dummy_skb->cb));
- pr_info("Open vSwitch %s, built "__DATE__" "__TIME__"\n",
+ pr_info("Open vSwitch switching datapath %s, built "__DATE__" "__TIME__"\n",
VERSION BUILDNR);
err = tnl_init();
projects / openvswitch / blobdiff