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-rw-r--r--include/linux/if_team.h242
1 files changed, 242 insertions, 0 deletions
diff --git a/include/linux/if_team.h b/include/linux/if_team.h
new file mode 100644
index 00000000000..828181fbad5
--- /dev/null
+++ b/include/linux/if_team.h
@@ -0,0 +1,242 @@
+/*
+ * include/linux/if_team.h - Network team device driver header
+ * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _LINUX_IF_TEAM_H_
+#define _LINUX_IF_TEAM_H_
+
+#ifdef __KERNEL__
+
+struct team_pcpu_stats {
+ u64 rx_packets;
+ u64 rx_bytes;
+ u64 rx_multicast;
+ u64 tx_packets;
+ u64 tx_bytes;
+ struct u64_stats_sync syncp;
+ u32 rx_dropped;
+ u32 tx_dropped;
+};
+
+struct team;
+
+struct team_port {
+ struct net_device *dev;
+ struct hlist_node hlist; /* node in hash list */
+ struct list_head list; /* node in ordinary list */
+ struct team *team;
+ int index;
+
+ /*
+ * A place for storing original values of the device before it
+ * become a port.
+ */
+ struct {
+ unsigned char dev_addr[MAX_ADDR_LEN];
+ unsigned int mtu;
+ } orig;
+
+ bool linkup;
+ u32 speed;
+ u8 duplex;
+
+ struct rcu_head rcu;
+};
+
+struct team_mode_ops {
+ int (*init)(struct team *team);
+ void (*exit)(struct team *team);
+ rx_handler_result_t (*receive)(struct team *team,
+ struct team_port *port,
+ struct sk_buff *skb);
+ bool (*transmit)(struct team *team, struct sk_buff *skb);
+ int (*port_enter)(struct team *team, struct team_port *port);
+ void (*port_leave)(struct team *team, struct team_port *port);
+ void (*port_change_mac)(struct team *team, struct team_port *port);
+};
+
+enum team_option_type {
+ TEAM_OPTION_TYPE_U32,
+ TEAM_OPTION_TYPE_STRING,
+};
+
+struct team_option {
+ struct list_head list;
+ const char *name;
+ enum team_option_type type;
+ int (*getter)(struct team *team, void *arg);
+ int (*setter)(struct team *team, void *arg);
+};
+
+struct team_mode {
+ struct list_head list;
+ const char *kind;
+ struct module *owner;
+ size_t priv_size;
+ const struct team_mode_ops *ops;
+};
+
+#define TEAM_PORT_HASHBITS 4
+#define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS)
+
+#define TEAM_MODE_PRIV_LONGS 4
+#define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS)
+
+struct team {
+ struct net_device *dev; /* associated netdevice */
+ struct team_pcpu_stats __percpu *pcpu_stats;
+
+ struct mutex lock; /* used for overall locking, e.g. port lists write */
+
+ /*
+ * port lists with port count
+ */
+ int port_count;
+ struct hlist_head port_hlist[TEAM_PORT_HASHENTRIES];
+ struct list_head port_list;
+
+ struct list_head option_list;
+
+ const struct team_mode *mode;
+ struct team_mode_ops ops;
+ long mode_priv[TEAM_MODE_PRIV_LONGS];
+};
+
+static inline struct hlist_head *team_port_index_hash(struct team *team,
+ int port_index)
+{
+ return &team->port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)];
+}
+
+static inline struct team_port *team_get_port_by_index(struct team *team,
+ int port_index)
+{
+ struct hlist_node *p;
+ struct team_port *port;
+ struct hlist_head *head = team_port_index_hash(team, port_index);
+
+ hlist_for_each_entry(port, p, head, hlist)
+ if (port->index == port_index)
+ return port;
+ return NULL;
+}
+static inline struct team_port *team_get_port_by_index_rcu(struct team *team,
+ int port_index)
+{
+ struct hlist_node *p;
+ struct team_port *port;
+ struct hlist_head *head = team_port_index_hash(team, port_index);
+
+ hlist_for_each_entry_rcu(port, p, head, hlist)
+ if (port->index == port_index)
+ return port;
+ return NULL;
+}
+
+extern int team_port_set_team_mac(struct team_port *port);
+extern int team_options_register(struct team *team,
+ const struct team_option *option,
+ size_t option_count);
+extern void team_options_unregister(struct team *team,
+ const struct team_option *option,
+ size_t option_count);
+extern int team_mode_register(struct team_mode *mode);
+extern int team_mode_unregister(struct team_mode *mode);
+
+#endif /* __KERNEL__ */
+
+#define TEAM_STRING_MAX_LEN 32
+
+/**********************************
+ * NETLINK_GENERIC netlink family.
+ **********************************/
+
+enum {
+ TEAM_CMD_NOOP,
+ TEAM_CMD_OPTIONS_SET,
+ TEAM_CMD_OPTIONS_GET,
+ TEAM_CMD_PORT_LIST_GET,
+
+ __TEAM_CMD_MAX,
+ TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1),
+};
+
+enum {
+ TEAM_ATTR_UNSPEC,
+ TEAM_ATTR_TEAM_IFINDEX, /* u32 */
+ TEAM_ATTR_LIST_OPTION, /* nest */
+ TEAM_ATTR_LIST_PORT, /* nest */
+
+ __TEAM_ATTR_MAX,
+ TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1,
+};
+
+/* Nested layout of get/set msg:
+ *
+ * [TEAM_ATTR_LIST_OPTION]
+ * [TEAM_ATTR_ITEM_OPTION]
+ * [TEAM_ATTR_OPTION_*], ...
+ * [TEAM_ATTR_ITEM_OPTION]
+ * [TEAM_ATTR_OPTION_*], ...
+ * ...
+ * [TEAM_ATTR_LIST_PORT]
+ * [TEAM_ATTR_ITEM_PORT]
+ * [TEAM_ATTR_PORT_*], ...
+ * [TEAM_ATTR_ITEM_PORT]
+ * [TEAM_ATTR_PORT_*], ...
+ * ...
+ */
+
+enum {
+ TEAM_ATTR_ITEM_OPTION_UNSPEC,
+ TEAM_ATTR_ITEM_OPTION, /* nest */
+
+ __TEAM_ATTR_ITEM_OPTION_MAX,
+ TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1,
+};
+
+enum {
+ TEAM_ATTR_OPTION_UNSPEC,
+ TEAM_ATTR_OPTION_NAME, /* string */
+ TEAM_ATTR_OPTION_CHANGED, /* flag */
+ TEAM_ATTR_OPTION_TYPE, /* u8 */
+ TEAM_ATTR_OPTION_DATA, /* dynamic */
+
+ __TEAM_ATTR_OPTION_MAX,
+ TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1,
+};
+
+enum {
+ TEAM_ATTR_ITEM_PORT_UNSPEC,
+ TEAM_ATTR_ITEM_PORT, /* nest */
+
+ __TEAM_ATTR_ITEM_PORT_MAX,
+ TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1,
+};
+
+enum {
+ TEAM_ATTR_PORT_UNSPEC,
+ TEAM_ATTR_PORT_IFINDEX, /* u32 */
+ TEAM_ATTR_PORT_CHANGED, /* flag */
+ TEAM_ATTR_PORT_LINKUP, /* flag */
+ TEAM_ATTR_PORT_SPEED, /* u32 */
+ TEAM_ATTR_PORT_DUPLEX, /* u8 */
+
+ __TEAM_ATTR_PORT_MAX,
+ TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1,
+};
+
+/*
+ * NETLINK_GENERIC related info
+ */
+#define TEAM_GENL_NAME "team"
+#define TEAM_GENL_VERSION 0x1
+#define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event"
+
+#endif /* _LINUX_IF_TEAM_H_ */