225 lines
7.1 KiB
C
225 lines
7.1 KiB
C
/*
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* WiMedia Logical Link Control Protocol (WLP)
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* Internal API
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*
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* Copyright (C) 2007 Intel Corporation
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* Reinette Chatre <reinette.chatre@intel.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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*/
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#ifndef __WLP_INTERNAL_H__
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#define __WLP_INTERNAL_H__
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/**
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* State of WSS connection
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*
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* A device needs to connect to a neighbor in an activated WSS before data
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* can be transmitted. The spec also distinguishes between a new connection
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* attempt and a connection attempt after previous connection attempts. The
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* state WLP_WSS_CONNECT_FAILED is used for this scenario. See WLP 0.99
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* [7.2.6]
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*/
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enum wlp_wss_connect {
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WLP_WSS_UNCONNECTED = 0,
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WLP_WSS_CONNECTED,
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WLP_WSS_CONNECT_FAILED,
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};
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extern struct kobj_type wss_ktype;
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extern struct attribute_group wss_attr_group;
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/* This should be changed to a dynamic array where entries are sorted
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* by eth_addr and search is done in a binary form
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*
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* Although thinking twice about it: this technologie's maximum reach
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* is 10 meters...unless you want to pack too much stuff in around
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* your radio controller/WLP device, the list will probably not be
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* too big.
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*
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* In any case, there is probably some data structure in the kernel
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* than we could reused for that already.
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*
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* The below structure is really just good while we support one WSS per
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* host.
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*/
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struct wlp_eda_node {
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struct list_head list_node;
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unsigned char eth_addr[ETH_ALEN];
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struct uwb_dev_addr dev_addr;
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struct wlp_wss *wss;
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unsigned char virt_addr[ETH_ALEN];
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u8 tag;
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enum wlp_wss_connect state;
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};
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typedef int (*wlp_eda_for_each_f)(struct wlp *, struct wlp_eda_node *, void *);
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extern void wlp_eda_init(struct wlp_eda *);
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extern void wlp_eda_release(struct wlp_eda *);
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extern int wlp_eda_create_node(struct wlp_eda *,
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const unsigned char eth_addr[ETH_ALEN],
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const struct uwb_dev_addr *);
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extern void wlp_eda_rm_node(struct wlp_eda *, const struct uwb_dev_addr *);
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extern int wlp_eda_update_node(struct wlp_eda *,
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const struct uwb_dev_addr *,
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struct wlp_wss *,
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const unsigned char virt_addr[ETH_ALEN],
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const u8, const enum wlp_wss_connect);
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extern int wlp_eda_update_node_state(struct wlp_eda *,
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const struct uwb_dev_addr *,
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const enum wlp_wss_connect);
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extern int wlp_copy_eda_node(struct wlp_eda *, struct uwb_dev_addr *,
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struct wlp_eda_node *);
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extern int wlp_eda_for_each(struct wlp_eda *, wlp_eda_for_each_f , void *);
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extern int wlp_eda_for_virtual(struct wlp_eda *,
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const unsigned char eth_addr[ETH_ALEN],
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struct uwb_dev_addr *,
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wlp_eda_for_each_f , void *);
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extern void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *);
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extern size_t wlp_wss_key_print(char *, size_t, u8 *);
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/* Function called when no more references to WSS exists */
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extern void wlp_wss_release(struct kobject *);
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extern void wlp_wss_reset(struct wlp_wss *);
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extern int wlp_wss_create_activate(struct wlp_wss *, struct wlp_uuid *,
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char *, unsigned, unsigned);
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extern int wlp_wss_enroll_activate(struct wlp_wss *, struct wlp_uuid *,
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struct uwb_dev_addr *);
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extern ssize_t wlp_discover(struct wlp *);
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extern int wlp_enroll_neighbor(struct wlp *, struct wlp_neighbor_e *,
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struct wlp_wss *, struct wlp_uuid *);
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extern int wlp_wss_is_active(struct wlp *, struct wlp_wss *,
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struct uwb_dev_addr *);
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struct wlp_assoc_conn_ctx {
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struct work_struct ws;
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struct wlp *wlp;
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struct sk_buff *skb;
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struct wlp_eda_node eda_entry;
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};
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extern int wlp_wss_connect_prep(struct wlp *, struct wlp_eda_node *, void *);
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extern int wlp_wss_send_copy(struct wlp *, struct wlp_eda_node *, void *);
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/* Message handling */
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struct wlp_assoc_frame_ctx {
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struct work_struct ws;
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struct wlp *wlp;
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struct sk_buff *skb;
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struct uwb_dev_addr src;
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};
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extern int wlp_wss_prep_hdr(struct wlp *, struct wlp_eda_node *, void *);
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extern void wlp_handle_d1_frame(struct work_struct *);
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extern int wlp_parse_d2_frame_to_cache(struct wlp *, struct sk_buff *,
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struct wlp_neighbor_e *);
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extern int wlp_parse_d2_frame_to_enroll(struct wlp_wss *, struct sk_buff *,
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struct wlp_neighbor_e *,
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struct wlp_uuid *);
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extern void wlp_handle_c1_frame(struct work_struct *);
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extern void wlp_handle_c3_frame(struct work_struct *);
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extern int wlp_parse_c3c4_frame(struct wlp *, struct sk_buff *,
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struct wlp_uuid *, u8 *,
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struct uwb_mac_addr *);
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extern int wlp_parse_f0(struct wlp *, struct sk_buff *);
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extern int wlp_send_assoc_frame(struct wlp *, struct wlp_wss *,
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struct uwb_dev_addr *, enum wlp_assoc_type);
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extern ssize_t wlp_get_version(struct wlp *, struct wlp_attr_version *,
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u8 *, ssize_t);
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extern ssize_t wlp_get_wssid(struct wlp *, struct wlp_attr_wssid *,
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struct wlp_uuid *, ssize_t);
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extern int __wlp_alloc_device_info(struct wlp *);
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extern int __wlp_setup_device_info(struct wlp *);
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extern struct wlp_wss_attribute wss_attribute_properties;
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extern struct wlp_wss_attribute wss_attribute_members;
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extern struct wlp_wss_attribute wss_attribute_state;
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static inline
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size_t wlp_wss_uuid_print(char *buf, size_t bufsize, struct wlp_uuid *uuid)
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{
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size_t result;
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result = scnprintf(buf, bufsize,
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"%02x:%02x:%02x:%02x:%02x:%02x:"
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"%02x:%02x:%02x:%02x:%02x:%02x:"
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"%02x:%02x:%02x:%02x",
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uuid->data[0], uuid->data[1],
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uuid->data[2], uuid->data[3],
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uuid->data[4], uuid->data[5],
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uuid->data[6], uuid->data[7],
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uuid->data[8], uuid->data[9],
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uuid->data[10], uuid->data[11],
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uuid->data[12], uuid->data[13],
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uuid->data[14], uuid->data[15]);
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return result;
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}
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/**
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* FIXME: How should a nonce be displayed?
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*/
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static inline
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size_t wlp_wss_nonce_print(char *buf, size_t bufsize, struct wlp_nonce *nonce)
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{
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size_t result;
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result = scnprintf(buf, bufsize,
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"%02x %02x %02x %02x %02x %02x "
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"%02x %02x %02x %02x %02x %02x "
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"%02x %02x %02x %02x",
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nonce->data[0], nonce->data[1],
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nonce->data[2], nonce->data[3],
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nonce->data[4], nonce->data[5],
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nonce->data[6], nonce->data[7],
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nonce->data[8], nonce->data[9],
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nonce->data[10], nonce->data[11],
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nonce->data[12], nonce->data[13],
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nonce->data[14], nonce->data[15]);
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return result;
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}
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static inline
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void wlp_session_cb(struct wlp *wlp)
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{
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struct completion *completion = wlp->session->cb_priv;
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complete(completion);
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}
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static inline
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int wlp_uuid_is_set(struct wlp_uuid *uuid)
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{
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struct wlp_uuid zero_uuid = { .data = { 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00} };
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if (!memcmp(uuid, &zero_uuid, sizeof(*uuid)))
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return 0;
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return 1;
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}
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#endif /* __WLP_INTERNAL_H__ */
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