include/linux/if

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This source file includes following definitions.
team_port_enabled
team_port_txable
team_netpoll_send_skb
team_netpoll_send_skb
team_dev_queue_xmit
team_port_index_hash
team_get_port_by_index
team_num_to_port_index
team_get_port_by_index_rcu
team_get_first_port_txable_rcu
/*
 * 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_

#include <linux/netpoll.h>
#include <net/sch_generic.h>
#include <linux/types.h>
#include <uapi/linux/if_team.h>

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 enabled ports hash list */
        struct list_head list; /* node in ordinary list */
        struct team *team;
        int index; /* index of enabled port. If disabled, it's set to -1 */

        bool linkup; /* either state.linkup or user.linkup */

        struct {
                bool linkup;
                u32 speed;
                u8 duplex;
        } state;

        /* Values set by userspace */
        struct {
                bool linkup;
                bool linkup_enabled;
        } user;

        /* Custom gennetlink interface related flags */
        bool changed;
        bool removed;

        /*
         * 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;

#ifdef CONFIG_NET_POLL_CONTROLLER
        struct netpoll *np;
#endif

        s32 priority; /* lower number ~ higher priority */
        u16 queue_id;
        struct list_head qom_list; /* node in queue override mapping list */
        struct rcu_head rcu;
        long mode_priv[0];
};

static inline bool team_port_enabled(struct team_port *port)
{
        return port->index != -1;
}

static inline bool team_port_txable(struct team_port *port)
{
        return port->linkup && team_port_enabled(port);
}

#ifdef CONFIG_NET_POLL_CONTROLLER
static inline void team_netpoll_send_skb(struct team_port *port,
                                         struct sk_buff *skb)
{
        struct netpoll *np = port->np;

        if (np)
                netpoll_send_skb(np, skb);
}
#else
static inline void team_netpoll_send_skb(struct team_port *port,
                                         struct sk_buff *skb)
{
}
#endif

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_dev_addr)(struct team *team, struct team_port *port);
        void (*port_enabled)(struct team *team, struct team_port *port);
        void (*port_disabled)(struct team *team, struct team_port *port);
};

extern int team_modeop_port_enter(struct team *team, struct team_port *port);
extern void team_modeop_port_change_dev_addr(struct team *team,
                                             struct team_port *port);

enum team_option_type {
        TEAM_OPTION_TYPE_U32,
        TEAM_OPTION_TYPE_STRING,
        TEAM_OPTION_TYPE_BINARY,
        TEAM_OPTION_TYPE_BOOL,
        TEAM_OPTION_TYPE_S32,
};

struct team_option_inst_info {
        u32 array_index;
        struct team_port *port; /* != NULL if per-port */
};

struct team_gsetter_ctx {
        union {
                u32 u32_val;
                const char *str_val;
                struct {
                        const void *ptr;
                        u32 len;
                } bin_val;
                bool bool_val;
                s32 s32_val;
        } data;
        struct team_option_inst_info *info;
};

struct team_option {
        struct list_head list;
        const char *name;
        bool per_port;
        unsigned int array_size; /* != 0 means the option is array */
        enum team_option_type type;
        int (*init)(struct team *team, struct team_option_inst_info *info);
        int (*getter)(struct team *team, struct team_gsetter_ctx *ctx);
        int (*setter)(struct team *team, struct team_gsetter_ctx *ctx);
};

extern void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info);
extern void team_options_change_check(struct team *team);

struct team_mode {
        const char *kind;
        struct module *owner;
        size_t priv_size;
        size_t port_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 */

        /*
         * List of enabled ports and their count
         */
        int en_port_count;
        struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES];

        struct list_head port_list; /* list of all ports */

        struct list_head option_list;
        struct list_head option_inst_list; /* list of option instances */

        const struct team_mode *mode;
        struct team_mode_ops ops;
        bool user_carrier_enabled;
        bool queue_override_enabled;
        struct list_head *qom_lists; /* array of queue override mapping lists */
        bool port_mtu_change_allowed;
        struct {
                unsigned int count;
                unsigned int interval; /* in ms */
                atomic_t count_pending;
                struct delayed_work dw;
        } notify_peers;
        struct {
                unsigned int count;
                unsigned int interval; /* in ms */
                atomic_t count_pending;
                struct delayed_work dw;
        } mcast_rejoin;
        long mode_priv[TEAM_MODE_PRIV_LONGS];
};

static inline int team_dev_queue_xmit(struct team *team, struct team_port *port,
                                      struct sk_buff *skb)
{
        BUILD_BUG_ON(sizeof(skb->queue_mapping) !=
                     sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping));
        skb_set_queue_mapping(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping);

        skb->dev = port->dev;
        if (unlikely(netpoll_tx_running(team->dev))) {
                team_netpoll_send_skb(port, skb);
                return 0;
        }
        return dev_queue_xmit(skb);
}

static inline struct hlist_head *team_port_index_hash(struct team *team,
                                                      int port_index)
{
        return &team->en_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 team_port *port;
        struct hlist_head *head = team_port_index_hash(team, port_index);

        hlist_for_each_entry(port, head, hlist)
                if (port->index == port_index)
                        return port;
        return NULL;
}

static inline int team_num_to_port_index(struct team *team, int num)
{
        int en_port_count = ACCESS_ONCE(team->en_port_count);

        if (unlikely(!en_port_count))
                return 0;
        return num % en_port_count;
}

static inline struct team_port *team_get_port_by_index_rcu(struct team *team,
                                                           int port_index)
{
        struct team_port *port;
        struct hlist_head *head = team_port_index_hash(team, port_index);

        hlist_for_each_entry_rcu(port, head, hlist)
                if (port->index == port_index)
                        return port;
        return NULL;
}

static inline struct team_port *
team_get_first_port_txable_rcu(struct team *team, struct team_port *port)
{
        struct team_port *cur;

        if (likely(team_port_txable(port)))
                return port;
        cur = port;
        list_for_each_entry_continue_rcu(cur, &team->port_list, list)
                if (team_port_txable(cur))
                        return cur;
        list_for_each_entry_rcu(cur, &team->port_list, list) {
                if (cur == port)
                        break;
                if (team_port_txable(cur))
                        return cur;
        }
        return NULL;
}

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(const struct team_mode *mode);
extern void team_mode_unregister(const struct team_mode *mode);

#define TEAM_DEFAULT_NUM_TX_QUEUES 16
#define TEAM_DEFAULT_NUM_RX_QUEUES 16

#endif /* _LINUX_IF_TEAM_H_ */
/* [<][>][^][v][top][bottom][index][help] */
root/include/linux/if_team.h

INCLUDED FROM

DEFINITIONS
