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/*
* Copyright (c) 2012 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef FWEH_H_
#define FWEH_H_
#include <asm/unaligned.h>
#include <linux/skbuff.h>
#include <linux/if_ether.h>
#include <linux/if.h>
/* formward declarations */
struct brcmf_pub;
struct brcmf_if;
struct brcmf_cfg80211_info;
struct brcmf_event;
/* firmware event codes sent by the dongle */
enum brcmf_fweh_event_code {
BRCMF_E_SET_SSID = 0,
BRCMF_E_JOIN = 1,
BRCMF_E_START = 2,
BRCMF_E_AUTH = 3,
BRCMF_E_AUTH_IND = 4,
BRCMF_E_DEAUTH = 5,
BRCMF_E_DEAUTH_IND = 6,
BRCMF_E_ASSOC = 7,
BRCMF_E_ASSOC_IND = 8,
BRCMF_E_REASSOC = 9,
BRCMF_E_REASSOC_IND = 10,
BRCMF_E_DISASSOC = 11,
BRCMF_E_DISASSOC_IND = 12,
BRCMF_E_QUIET_START = 13,
BRCMF_E_QUIET_END = 14,
BRCMF_E_BEACON_RX = 15,
BRCMF_E_LINK = 16,
BRCMF_E_MIC_ERROR = 17,
BRCMF_E_NDIS_LINK = 18,
BRCMF_E_ROAM = 19,
BRCMF_E_TXFAIL = 20,
BRCMF_E_PMKID_CACHE = 21,
BRCMF_E_RETROGRADE_TSF = 22,
BRCMF_E_PRUNE = 23,
BRCMF_E_AUTOAUTH = 24,
BRCMF_E_EAPOL_MSG = 25,
BRCMF_E_SCAN_COMPLETE = 26,
BRCMF_E_ADDTS_IND = 27,
BRCMF_E_DELTS_IND = 28,
BRCMF_E_BCNSENT_IND = 29,
BRCMF_E_BCNRX_MSG = 30,
BRCMF_E_BCNLOST_MSG = 31,
BRCMF_E_ROAM_PREP = 32,
BRCMF_E_PFN_NET_FOUND = 33,
BRCMF_E_PFN_NET_LOST = 34,
BRCMF_E_RESET_COMPLETE = 35,
BRCMF_E_JOIN_START = 36,
BRCMF_E_ROAM_START = 37,
BRCMF_E_ASSOC_START = 38,
BRCMF_E_IBSS_ASSOC = 39,
BRCMF_E_RADIO = 40,
BRCMF_E_PSM_WATCHDOG = 41,
BRCMF_E_PROBREQ_MSG = 44,
BRCMF_E_SCAN_CONFIRM_IND = 45,
BRCMF_E_PSK_SUP = 46,
BRCMF_E_COUNTRY_CODE_CHANGED = 47,
BRCMF_E_EXCEEDED_MEDIUM_TIME = 48,
BRCMF_E_ICV_ERROR = 49,
BRCMF_E_UNICAST_DECODE_ERROR = 50,
BRCMF_E_MULTICAST_DECODE_ERROR = 51,
BRCMF_E_TRACE = 52,
BRCMF_E_IF = 54,
BRCMF_E_RSSI = 56,
BRCMF_E_PFN_SCAN_COMPLETE = 57,
BRCMF_E_EXTLOG_MSG = 58,
BRCMF_E_ACTION_FRAME = 59,
BRCMF_E_ACTION_FRAME_COMPLETE = 60,
BRCMF_E_PRE_ASSOC_IND = 61,
BRCMF_E_PRE_REASSOC_IND = 62,
BRCMF_E_CHANNEL_ADOPTED = 63,
BRCMF_E_AP_STARTED = 64,
BRCMF_E_DFS_AP_STOP = 65,
BRCMF_E_DFS_AP_RESUME = 66,
BRCMF_E_ESCAN_RESULT = 69,
BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE = 70,
BRCMF_E_DCS_REQUEST = 73,
BRCMF_E_FIFO_CREDIT_MAP = 74,
BRCMF_E_LAST
};
/* flags field values in struct brcmf_event_msg */
#define BRCMF_EVENT_MSG_LINK 0x01
#define BRCMF_EVENT_MSG_FLUSHTXQ 0x02
#define BRCMF_EVENT_MSG_GROUP 0x04
/**
* definitions for event packet validation.
*/
#define BRCMF_EVENT_OUI_OFFSET 19
#define BRCM_OUI "\x00\x10\x18"
#define DOT11_OUI_LEN 3
#define BCMILCP_BCM_SUBTYPE_EVENT 1
/**
* struct brcmf_event_msg - firmware event message.
*
* @version: version information.
* @flags: event flags.
* @event_code: firmware event code.
* @status: status information.
* @reason: reason code.
* @auth_type: authentication type.
* @datalen: lenght of event data buffer.
* @addr: ether address.
* @ifname: interface name.
* @ifidx: interface index.
* @bsscfgidx: bsscfg index.
*/
struct brcmf_event_msg {
u16 version;
u16 flags;
u32 event_code;
u32 status;
u32 reason;
s32 auth_type;
u32 datalen;
u8 addr[ETH_ALEN];
char ifname[IFNAMSIZ];
u8 ifidx;
u8 bsscfgidx;
};
typedef int (*brcmf_fweh_handler_t)(struct brcmf_if *ifp,
const struct brcmf_event_msg *evtmsg,
void *data);
/**
* struct brcmf_fweh_info - firmware event handling information.
*
* @event_work: event worker.
* @evt_q_lock: lock for event queue protection.
* @event_q: event queue.
* @evt_handler: registered event handlers.
*/
struct brcmf_fweh_info {
struct work_struct event_work;
spinlock_t evt_q_lock;
struct list_head event_q;
int (*evt_handler[BRCMF_E_LAST])(struct brcmf_if *ifp,
const struct brcmf_event_msg *evtmsg,
void *data);
};
void brcmf_fweh_attach(struct brcmf_pub *drvr);
void brcmf_fweh_detach(struct brcmf_pub *drvr);
int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code,
int (*handler)(struct brcmf_if *ifp,
const struct brcmf_event_msg *evtmsg,
void *data));
void brcmf_fweh_unregister(struct brcmf_pub *drvr,
enum brcmf_fweh_event_code code);
int brcmf_fweh_activate_events(struct brcmf_if *ifp);
void brcmf_fweh_process_event(struct brcmf_pub *drvr,
struct brcmf_event *event_packet, u8 *ifidx);
static inline void brcmf_fweh_process_skb(struct brcmf_pub *drvr,
struct sk_buff *skb, u8 *ifidx)
{
struct brcmf_event *event_packet;
u8 *data;
u16 usr_stype;
/* only process events when protocol matches */
if (skb->protocol != cpu_to_be16(ETH_P_LINK_CTL))
return;
/* check for BRCM oui match */
event_packet = (struct brcmf_event *)skb_mac_header(skb);
data = (u8 *)event_packet;
data += BRCMF_EVENT_OUI_OFFSET;
if (memcmp(BRCM_OUI, data, DOT11_OUI_LEN))
return;
/* final match on usr_subtype */
data += DOT11_OUI_LEN;
usr_stype = get_unaligned_be16(data);
if (usr_stype != BCMILCP_BCM_SUBTYPE_EVENT)
return;
brcmf_fweh_process_event(drvr, event_packet, ifidx);
}
#endif /* FWEH_H_ */
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