| /* |
| * 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; |
| |
| #define broken_roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) |
| typedef struct { |
| u8 vec[broken_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_ */ |