netifd[6]-proto

enum interface_proto_event {
    IFPEV_UP,
    IFPEV_DOWN,
    IFPEV_LINK_LOST,
    IFPEV_RENEW,
};

enum interface_proto_cmd {
    PROTO_CMD_SETUP,
    PROTO_CMD_TEARDOWN,
    PROTO_CMD_RENEW,
};

enum {
    PROTO_FLAG_IMMEDIATE = (1 << 0),
    PROTO_FLAG_NODEV = (1 << 1),
    PROTO_FLAG_INIT_AVAILABLE = (1 << 2),
    PROTO_FLAG_RENEW_AVAILABLE = (1 << 3),
};

struct interface_proto_state {
    const struct proto_handler *handler;
    struct interface *iface;

    /* filled in by the protocol user */
    void (*proto_event)(struct interface_proto_state *, enum interface_proto_event ev);

    /* filled in by the protocol handler */
    int (*notify)(struct interface_proto_state *, struct blob_attr *data);
    int (*cb)(struct interface_proto_state *, enum interface_proto_cmd cmd, bool force);
    void (*free)(struct interface_proto_state *);
};


struct proto_handler {
    struct avl_node avl;

    unsigned int flags;

    const char *name;
    const struct uci_blob_param_list *config_params;

    struct interface_proto_state *(*attach)(const struct proto_handler *h,
        struct interface *iface, struct blob_attr *attr);
};

enum {
    OPT_IPADDR,
    OPT_IP6ADDR,
    OPT_NETMASK,
    OPT_BROADCAST,
    OPT_GATEWAY,
    OPT_IP6GW,
    OPT_IP6PREFIX,
    __OPT_MAX,
};

static const struct blobmsg_policy proto_ip_attributes[__OPT_MAX] = {
    [OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
    [OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
    [OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
    [OPT_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
    [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
    [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
    [OPT_IP6PREFIX] = { .name = "ip6prefix", .type = BLOBMSG_TYPE_ARRAY },
};

static const struct uci_blob_param_info proto_ip_attr_info[__OPT_MAX] = {
    [OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
    [OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
    [OPT_IP6PREFIX] = { .type = BLOBMSG_TYPE_STRING },
};

static const char * const proto_ip_validate[__OPT_MAX] = {
    [OPT_IPADDR] = "ip4addr",
    [OPT_IP6ADDR] = "ip6addr",
    [OPT_NETMASK] = "netmask",
    [OPT_BROADCAST] = "ipaddr",
    [OPT_GATEWAY] = "ip4addr",
    [OPT_IP6GW] = "ip6addr",
    [OPT_IP6PREFIX] = "ip6addr",
};

const struct uci_blob_param_list proto_ip_attr = {
    .n_params = __OPT_MAX,
    .params = proto_ip_attributes,
    .validate = proto_ip_validate,
    .info = proto_ip_attr_info,
};

enum {
    ADDR_IPADDR,
    ADDR_MASK,
    ADDR_BROADCAST,
    ADDR_PTP,
    ADDR_PREFERRED,
    ADDR_VALID,
    ADDR_OFFLINK,
    ADDR_CLASS,
    __ADDR_MAX
};

static const struct blobmsg_policy proto_ip_addr[__ADDR_MAX] = {
    [ADDR_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_STRING },
    [ADDR_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
    [ADDR_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
    [ADDR_PTP] = { .name = "ptp", .type = BLOBMSG_TYPE_STRING },
    [ADDR_PREFERRED] = { .name = "preferred", .type = BLOBMSG_TYPE_INT32 },
    [ADDR_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
    [ADDR_OFFLINK] = { .name = "offlink", .type = BLOBMSG_TYPE_BOOL },
    [ADDR_CLASS] = { .name = "class", .type = BLOBMSG_TYPE_STRING },
};

/**
 *     proto            
 */
void add_proto_handler(struct proto_handler *p)

/**
 *    interface   proto    
 */
void proto_init_interface(struct interface *iface, struct blob_attr *attr)

/**
 *   proto       proto      ，    interface   
 *
 * @param iface interface object
 * @param proto_name protocol name string
 */
void proto_attach_interface(struct interface *iface, const char *proto_name)

/**
 * interface  proto    
 */
int interface_proto_event(struct interface_proto_state *proto,
              enum interface_proto_cmd cmd, bool force)

/**
 *   interface    IP  
 *
 * @param iface interface object
 * @param attr configure of static ip
 */
int proto_apply_static_ip_settings(struct interface *iface, struct blob_attr *attr)

/**
 *   interface  IP  
 *
 * @param iface interface object
 * @param attr configure of ip
 * @param ext 
 */
int proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)

/**
 *       proto        
 */
void proto_dump_handlers(struct blob_buf *b)