diff options
Diffstat (limited to 'drivers/staging/brcm80211/sys/wlc_key.h')
-rw-r--r-- | drivers/staging/brcm80211/sys/wlc_key.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/drivers/staging/brcm80211/sys/wlc_key.h b/drivers/staging/brcm80211/sys/wlc_key.h new file mode 100644 index 000000000000..d4f1b91f4dee --- /dev/null +++ b/drivers/staging/brcm80211/sys/wlc_key.h @@ -0,0 +1,143 @@ +/* + * Copyright (c) 2010 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 _wlc_key_h_ +#define _wlc_key_h_ + +struct scb; +struct wlc_info; +struct wlc_bsscfg; +/* Maximum # of keys that wl driver supports in S/W. + * Keys supported in H/W is less than or equal to WSEC_MAX_KEYS. + */ +#define WSEC_MAX_KEYS 54 /* Max # of keys (50 + 4 default keys) */ +#define WLC_DEFAULT_KEYS 4 /* Default # of keys */ + +#define WSEC_MAX_WOWL_KEYS 5 /* Max keys in WOWL mode (1 + 4 default keys) */ + +#define WPA2_GTK_MAX 3 + +/* +* Max # of keys currently supported: +* +* s/w keys if WSEC_SW(wlc->wsec). +* h/w keys otherwise. +*/ +#define WLC_MAX_WSEC_KEYS(wlc) WSEC_MAX_KEYS + +/* number of 802.11 default (non-paired, group keys) */ +#define WSEC_MAX_DEFAULT_KEYS 4 /* # of default keys */ + +/* Max # of hardware keys supported */ +#define WLC_MAX_WSEC_HW_KEYS(wlc) WSEC_MAX_RCMTA_KEYS + +/* Max # of hardware TKIP MIC keys supported */ +#define WLC_MAX_TKMIC_HW_KEYS(wlc) ((D11REV_GE((wlc)->pub->corerev, 13)) ? \ + WSEC_MAX_TKMIC_ENGINE_KEYS : 0) + +#define WSEC_HW_TKMIC_KEY(wlc, key, bsscfg) \ + (((D11REV_GE((wlc)->pub->corerev, 13)) && ((wlc)->machwcap & MCAP_TKIPMIC)) && \ + (key) && ((key)->algo == CRYPTO_ALGO_TKIP) && \ + !WSEC_SOFTKEY(wlc, key, bsscfg) && \ + WSEC_KEY_INDEX(wlc, key) >= WLC_DEFAULT_KEYS && \ + (WSEC_KEY_INDEX(wlc, key) < WSEC_MAX_TKMIC_ENGINE_KEYS)) + +/* index of key in key table */ +#define WSEC_KEY_INDEX(wlc, key) ((key)->idx) + +#define WSEC_SOFTKEY(wlc, key, bsscfg) (WLC_SW_KEYS(wlc, bsscfg) || \ + WSEC_KEY_INDEX(wlc, key) >= WLC_MAX_WSEC_HW_KEYS(wlc)) + +/* get a key, non-NULL only if key allocated and not clear */ +#define WSEC_KEY(wlc, i) (((wlc)->wsec_keys[i] && (wlc)->wsec_keys[i]->len) ? \ + (wlc)->wsec_keys[i] : NULL) + +#define WSEC_SCB_KEY_VALID(scb) (((scb)->key && (scb)->key->len) ? true : false) + +/* default key */ +#define WSEC_BSS_DEFAULT_KEY(bsscfg) (((bsscfg)->wsec_index == -1) ? \ + (struct wsec_key *)NULL:(bsscfg)->bss_def_keys[(bsscfg)->wsec_index]) + +/* Macros for key management in IBSS mode */ +#define WSEC_IBSS_MAX_PEERS 16 /* Max # of IBSS Peers */ +#define WSEC_IBSS_RCMTA_INDEX(idx) \ + (((idx - WSEC_MAX_DEFAULT_KEYS) % WSEC_IBSS_MAX_PEERS) + WSEC_MAX_DEFAULT_KEYS) + +/* contiguous # key slots for infrastructure mode STA */ +#define WSEC_BSS_STA_KEY_GROUP_SIZE 5 + +typedef struct wsec_iv { + u32 hi; /* upper 32 bits of IV */ + u16 lo; /* lower 16 bits of IV */ +} wsec_iv_t; + +#define WLC_NUMRXIVS 16 /* # rx IVs (one per 802.11e TID) */ + +typedef struct wsec_key { + struct ether_addr ea; /* per station */ + u8 idx; /* key index in wsec_keys array */ + u8 id; /* key ID [0-3] */ + u8 algo; /* CRYPTO_ALGO_AES_CCM, CRYPTO_ALGO_WEP128, etc */ + u8 rcmta; /* rcmta entry index, same as idx by default */ + u16 flags; /* misc flags */ + u8 algo_hw; /* cache for hw register */ + u8 aes_mode; /* cache for hw register */ + s8 iv_len; /* IV length */ + s8 icv_len; /* ICV length */ + u32 len; /* key length..don't move this var */ + /* data is 4byte aligned */ + u8 data[DOT11_MAX_KEY_SIZE]; /* key data */ + wsec_iv_t rxiv[WLC_NUMRXIVS]; /* Rx IV (one per TID) */ + wsec_iv_t txiv; /* Tx IV */ + +} wsec_key_t; + +typedef struct { + u8 vec[roundup(WSEC_MAX_KEYS, NBBY) / NBBY]; /* bitvec of wsec_key indexes */ +} wsec_key_vec_t; + +/* For use with wsec_key_t.flags */ + +#define WSEC_BS_UPDATE (1 << 0) /* Indicates hw needs key update on BS switch */ +#define WSEC_PRIMARY_KEY (1 << 1) /* Indicates this key is the primary (ie tx) key */ +#define WSEC_TKIP_ERROR (1 << 2) /* Provoke deliberate MIC error */ +#define WSEC_REPLAY_ERROR (1 << 3) /* Provoke deliberate replay */ +#define WSEC_IBSS_PEER_GROUP_KEY (1 << 7) /* Flag: group key for a IBSS PEER */ +#define WSEC_ICV_ERROR (1 << 8) /* Provoke deliberate ICV error */ + +#define wlc_key_insert(a, b, c, d, e, f, g, h, i, j) (BCME_ERROR) +#define wlc_key_update(a, b, c) do {} while (0) +#define wlc_key_remove(a, b, c) do {} while (0) +#define wlc_key_remove_all(a, b) do {} while (0) +#define wlc_key_delete(a, b, c) do {} while (0) +#define wlc_scb_key_delete(a, b) do {} while (0) +#define wlc_key_lookup(a, b, c, d, e) (NULL) +#define wlc_key_hw_init_all(a) do {} while (0) +#define wlc_key_hw_init(a, b, c) do {} while (0) +#define wlc_key_hw_wowl_init(a, b, c, d) do {} while (0) +#define wlc_key_sw_wowl_update(a, b, c, d, e) do {} while (0) +#define wlc_key_sw_wowl_create(a, b, c) (BCME_ERROR) +#define wlc_key_iv_update(a, b, c, d, e) do {(void)e; } while (0) +#define wlc_key_iv_init(a, b, c) do {} while (0) +#define wlc_key_set_error(a, b, c) (BCME_ERROR) +#define wlc_key_dump_hw(a, b) (BCME_ERROR) +#define wlc_key_dump_sw(a, b) (BCME_ERROR) +#define wlc_key_defkeyflag(a) (0) +#define wlc_rcmta_add_bssid(a, b) do {} while (0) +#define wlc_rcmta_del_bssid(a, b) do {} while (0) +#define wlc_key_scb_delete(a, b) do {} while (0) + +#endif /* _wlc_key_h_ */ |