/*
- * Copyright (c) 2010, 2011 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2015 Nicira, Inc.
*
- * 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
*/
#ifndef VPORT_H
#define VPORT_H 1
+#include <linux/if_tunnel.h>
#include <linux/list.h>
+#include <linux/netlink.h>
#include <linux/openvswitch.h>
-#include <linux/seqlock.h>
+#include <linux/reciprocal_div.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
+#include <linux/u64_stats_sync.h>
+#include <net/route.h>
#include "datapath.h"
/* The following definitions are for users of the vport subsytem: */
-int vport_init(void);
-void vport_exit(void);
-
-struct vport *vport_add(const struct vport_parms *);
-void vport_del(struct vport *);
-
-struct vport *vport_locate(const char *name);
-
-int vport_set_addr(struct vport *, const unsigned char *);
-void vport_set_stats(struct vport *, struct ovs_vport_stats *);
+int ovs_vport_init(void);
+void ovs_vport_exit(void);
-const char *vport_get_name(const struct vport *);
-enum ovs_vport_type vport_get_type(const struct vport *);
-const unsigned char *vport_get_addr(const struct vport *);
+struct vport *ovs_vport_add(const struct vport_parms *);
+void ovs_vport_del(struct vport *);
-struct kobject *vport_get_kobj(const struct vport *);
-void vport_get_stats(struct vport *, struct ovs_vport_stats *);
+struct vport *ovs_vport_locate(const struct net *net, const char *name);
-unsigned vport_get_flags(const struct vport *);
-int vport_is_running(const struct vport *);
-unsigned char vport_get_operstate(const struct vport *);
+void ovs_vport_get_stats(struct vport *, struct ovs_vport_stats *);
-int vport_get_ifindex(const struct vport *);
+int ovs_vport_set_options(struct vport *, struct nlattr *options);
+int ovs_vport_get_options(const struct vport *, struct sk_buff *);
-int vport_get_mtu(const struct vport *);
+int ovs_vport_set_upcall_portids(struct vport *, const struct nlattr *pids);
+int ovs_vport_get_upcall_portids(const struct vport *, struct sk_buff *);
+u32 ovs_vport_find_upcall_portid(const struct vport *, struct sk_buff *);
-int vport_set_options(struct vport *, struct nlattr *options);
-int vport_get_options(const struct vport *, struct sk_buff *);
+int ovs_tunnel_get_egress_info(struct dp_upcall_info *upcall,
+ struct net *net,
+ struct sk_buff *,
+ u8 ipproto,
+ __be16 tp_src,
+ __be16 tp_dst);
-int vport_send(struct vport *, struct sk_buff *);
+int ovs_vport_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
+ struct dp_upcall_info *upcall);
-/* The following definitions are for implementers of vport devices: */
-
-struct vport_percpu_stats {
- u64 rx_bytes;
- u64 rx_packets;
- u64 tx_bytes;
- u64 tx_packets;
- seqcount_t seqlock;
-};
-
-struct vport_err_stats {
- u64 rx_dropped;
- u64 rx_errors;
- u64 tx_dropped;
- u64 tx_errors;
+/**
+ * struct vport_portids - array of netlink portids of a vport.
+ * must be protected by rcu.
+ * @rn_ids: The reciprocal value of @n_ids.
+ * @rcu: RCU callback head for deferred destruction.
+ * @n_ids: Size of @ids array.
+ * @ids: Array storing the Netlink socket pids to be used for packets received
+ * on this port that miss the flow table.
+ */
+struct vport_portids {
+ struct reciprocal_value rn_ids;
+ struct rcu_head rcu;
+ u32 n_ids;
+ u32 ids[];
};
/**
* struct vport - one port within a datapath
* @rcu: RCU callback head for deferred destruction.
- * @port_no: Index into @dp's @ports array.
* @dp: Datapath to which this port belongs.
- * @kobj: Represents /sys/class/net/<devname>/brport.
- * @linkname: The name of the link from /sys/class/net/<datapath>/brif to this
- * &struct vport. (We keep this around so that we can delete it if the
- * device gets renamed.) Set to the null string when no link exists.
- * @node: Element in @dp's @port_list.
- * @upcall_pid: The Netlink port to use for packets received on this port that
- * miss the flow table.
+ * @upcall_portids: RCU protected 'struct vport_portids'.
+ * @port_no: Index into @dp's @ports array.
* @hash_node: Element in @dev_table hash table in vport.c.
+ * @dp_hash_node: Element in @datapath->ports hash table in datapath.c.
* @ops: Class structure.
- * @percpu_stats: Points to per-CPU statistics used and maintained by vport
- * @stats_lock: Protects @err_stats and @offset_stats.
- * @err_stats: Points to error statistics used and maintained by vport
- * @offset_stats: Added to actual statistics as a sop to compatibility with
- * XAPI for Citrix XenServer. Deprecated.
+ * @detach_list: list used for detaching vport in net-exit call.
*/
struct vport {
- struct rcu_head rcu;
- u16 port_no;
+ struct net_device *dev;
struct datapath *dp;
- struct kobject kobj;
- char linkname[IFNAMSIZ];
- struct list_head node;
- u32 upcall_pid;
+ struct vport_portids __rcu *upcall_portids;
+ u16 port_no;
struct hlist_node hash_node;
+ struct hlist_node dp_hash_node;
const struct vport_ops *ops;
- struct vport_percpu_stats __percpu *percpu_stats;
-
- spinlock_t stats_lock;
- struct vport_err_stats err_stats;
- struct ovs_vport_stats offset_stats;
+ struct list_head detach_list;
+ struct rcu_head rcu;
};
-#define VPORT_F_REQUIRED (1 << 0) /* If init fails, module loading fails. */
-#define VPORT_F_FLOW (1 << 1) /* Sets OVS_CB(skb)->flow. */
-#define VPORT_F_TUN_ID (1 << 2) /* Sets OVS_CB(skb)->tun_id. */
-
/**
* struct vport_parms - parameters for creating a new vport
*
enum ovs_vport_type type;
struct nlattr *options;
- /* For vport_alloc(). */
+ /* For ovs_vport_alloc(). */
struct datapath *dp;
u16 port_no;
- u32 upcall_pid;
+ struct nlattr *upcall_portids;
};
/**
* struct vport_ops - definition of a type of virtual port
*
* @type: %OVS_VPORT_TYPE_* value for this type of virtual port.
- * @flags: Flags of type VPORT_F_* that influence how the generic vport layer
- * handles this vport.
- * @init: Called at module initialization. If VPORT_F_REQUIRED is set then the
- * failure of this function will cause the module to not load. If the flag is
- * not set and initialzation fails then no vports of this type can be created.
- * @exit: Called at module unload.
* @create: Create a new vport configured as specified. On success returns
- * a new vport allocated with vport_alloc(), otherwise an ERR_PTR() value.
+ * a new vport allocated with ovs_vport_alloc(), otherwise an ERR_PTR() value.
* @destroy: Destroys a vport. Must call vport_free() on the vport but not
* before an RCU grace period has elapsed.
* @set_options: Modify the configuration of an existing vport. May be %NULL
* @get_options: Appends vport-specific attributes for the configuration of an
* existing vport to a &struct sk_buff. May be %NULL for a vport that does not
* have any configuration.
- * @set_addr: Set the device's MAC address. May be null if not supported.
- * @get_name: Get the device's name.
- * @get_addr: Get the device's MAC address.
- * @get_config: Get the device's configuration.
- * @get_kobj: Get the kobj associated with the device (may return null).
- * @get_dev_flags: Get the device's flags.
- * @is_running: Checks whether the device is running.
- * @get_operstate: Get the device's operating state.
- * @get_ifindex: Get the system interface index associated with the device.
- * May be null if the device does not have an ifindex.
- * @get_mtu: Get the device's MTU. May be %NULL if the device does not have an
- * MTU (as e.g. some tunnels do not).
- * @send: Send a packet on the device. Returns the length of the packet sent.
+ * @send: Send a packet on the device.
+ * zero for dropped packets or negative for error.
+ * @get_egress_tun_info: Get the egress tunnel 5-tuple and other info for
+ * a packet.
*/
struct vport_ops {
enum ovs_vport_type type;
- u32 flags;
- /* Called at module init and exit respectively. */
- int (*init)(void);
- void (*exit)(void);
-
- /* Called with RTNL lock. */
+ /* Called with ovs_mutex. */
struct vport *(*create)(const struct vport_parms *);
void (*destroy)(struct vport *);
int (*set_options)(struct vport *, struct nlattr *);
int (*get_options)(const struct vport *, struct sk_buff *);
- int (*set_addr)(struct vport *, const unsigned char *);
-
- /* Called with rcu_read_lock or RTNL lock. */
- const char *(*get_name)(const struct vport *);
- const unsigned char *(*get_addr)(const struct vport *);
- void (*get_config)(const struct vport *, void *);
- struct kobject *(*get_kobj)(const struct vport *);
-
- unsigned (*get_dev_flags)(const struct vport *);
- int (*is_running)(const struct vport *);
- unsigned char (*get_operstate)(const struct vport *);
-
- int (*get_ifindex)(const struct vport *);
-
- int (*get_mtu)(const struct vport *);
+ int (*get_egress_tun_info)(struct vport *, struct sk_buff *,
+ struct dp_upcall_info *upcall);
+ netdev_tx_t (*send)(struct sk_buff *skb);
- int (*send)(struct vport *, struct sk_buff *);
+ struct module *owner;
+ struct list_head list;
};
-enum vport_err_type {
- VPORT_E_RX_DROPPED,
- VPORT_E_RX_ERROR,
- VPORT_E_TX_DROPPED,
- VPORT_E_TX_ERROR,
-};
-
-struct vport *vport_alloc(int priv_size, const struct vport_ops *,
- const struct vport_parms *);
-void vport_free(struct vport *);
+struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *,
+ const struct vport_parms *);
+void ovs_vport_free(struct vport *);
+void ovs_vport_deferred_free(struct vport *vport);
#define VPORT_ALIGN 8
*/
static inline void *vport_priv(const struct vport *vport)
{
- return (u8 *)vport + ALIGN(sizeof(struct vport), VPORT_ALIGN);
+ return (u8 *)(uintptr_t)vport + ALIGN(sizeof(struct vport), VPORT_ALIGN);
}
/**
* the result of a hash table lookup. @priv must point to the start of the
* private data area.
*/
-static inline struct vport *vport_from_priv(const void *priv)
+static inline struct vport *vport_from_priv(void *priv)
{
- return (struct vport *)(priv - ALIGN(sizeof(struct vport), VPORT_ALIGN));
+ return (struct vport *)((u8 *)priv - ALIGN(sizeof(struct vport), VPORT_ALIGN));
}
-void vport_receive(struct vport *, struct sk_buff *);
-void vport_record_error(struct vport *, enum vport_err_type err_type);
+int ovs_vport_receive(struct vport *, struct sk_buff *,
+ const struct ip_tunnel_info *);
+
+static inline void ovs_skb_postpush_rcsum(struct sk_buff *skb,
+ const void *start, unsigned int len)
+{
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->csum = csum_add(skb->csum, csum_partial(start, len, 0));
+}
-/* List of statically compiled vport implementations. Don't forget to also
- * add yours to the list at the top of vport.c. */
-extern const struct vport_ops netdev_vport_ops;
-extern const struct vport_ops internal_vport_ops;
-extern const struct vport_ops patch_vport_ops;
-extern const struct vport_ops gre_vport_ops;
-extern const struct vport_ops capwap_vport_ops;
+static inline const char *ovs_vport_name(struct vport *vport)
+{
+ return vport->dev->name;
+}
+
+int __ovs_vport_ops_register(struct vport_ops *ops);
+#define ovs_vport_ops_register(ops) \
+({ \
+ (ops)->owner = THIS_MODULE; \
+ __ovs_vport_ops_register(ops); \
+})
+
+void ovs_vport_ops_unregister(struct vport_ops *ops);
+
+static inline struct rtable *ovs_tunnel_route_lookup(struct net *net,
+ const struct ip_tunnel_key *key,
+ u32 mark,
+ struct flowi4 *fl,
+ u8 protocol)
+{
+ struct rtable *rt;
+
+ memset(fl, 0, sizeof(*fl));
+ fl->daddr = key->u.ipv4.dst;
+ fl->saddr = key->u.ipv4.src;
+ fl->flowi4_tos = RT_TOS(key->tos);
+ fl->flowi4_mark = mark;
+ fl->flowi4_proto = protocol;
+
+ rt = ip_route_output_key(net, fl);
+ return rt;
+}
+void ovs_vport_send(struct vport *vport, struct sk_buff *skb);
#endif /* vport.h */
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