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14dd3a71cc
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200504201224.GA32282@embeddedor
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause-Clear */
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/*
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* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
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*/
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#ifndef ATH11K_HW_H
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#define ATH11K_HW_H
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/* Target configuration defines */
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/* Num VDEVS per radio */
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#define TARGET_NUM_VDEVS (16 + 1)
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#define TARGET_NUM_PEERS_PDEV (512 + TARGET_NUM_VDEVS)
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/* Num of peers for Single Radio mode */
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#define TARGET_NUM_PEERS_SINGLE (TARGET_NUM_PEERS_PDEV)
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/* Num of peers for DBS */
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#define TARGET_NUM_PEERS_DBS (2 * TARGET_NUM_PEERS_PDEV)
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/* Num of peers for DBS_SBS */
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#define TARGET_NUM_PEERS_DBS_SBS (3 * TARGET_NUM_PEERS_PDEV)
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/* Max num of stations (per radio) */
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#define TARGET_NUM_STATIONS 512
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#define TARGET_NUM_PEERS(x) TARGET_NUM_PEERS_##x
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#define TARGET_NUM_PEER_KEYS 2
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#define TARGET_NUM_TIDS(x) (2 * TARGET_NUM_PEERS(x) + \
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4 * TARGET_NUM_VDEVS + 8)
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#define TARGET_AST_SKID_LIMIT 16
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#define TARGET_NUM_OFFLD_PEERS 4
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#define TARGET_NUM_OFFLD_REORDER_BUFFS 4
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#define TARGET_TX_CHAIN_MASK (BIT(0) | BIT(1) | BIT(2) | BIT(4))
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#define TARGET_RX_CHAIN_MASK (BIT(0) | BIT(1) | BIT(2) | BIT(4))
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#define TARGET_RX_TIMEOUT_LO_PRI 100
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#define TARGET_RX_TIMEOUT_HI_PRI 40
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#define TARGET_DECAP_MODE_RAW 0
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#define TARGET_DECAP_MODE_NATIVE_WIFI 1
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#define TARGET_DECAP_MODE_ETH 2
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#define TARGET_SCAN_MAX_PENDING_REQS 4
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#define TARGET_BMISS_OFFLOAD_MAX_VDEV 3
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#define TARGET_ROAM_OFFLOAD_MAX_VDEV 3
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#define TARGET_ROAM_OFFLOAD_MAX_AP_PROFILES 8
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#define TARGET_GTK_OFFLOAD_MAX_VDEV 3
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#define TARGET_NUM_MCAST_GROUPS 12
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#define TARGET_NUM_MCAST_TABLE_ELEMS 64
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#define TARGET_MCAST2UCAST_MODE 2
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#define TARGET_TX_DBG_LOG_SIZE 1024
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#define TARGET_RX_SKIP_DEFRAG_TIMEOUT_DUP_DETECTION_CHECK 1
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#define TARGET_VOW_CONFIG 0
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#define TARGET_NUM_MSDU_DESC (2500)
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#define TARGET_MAX_FRAG_ENTRIES 6
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#define TARGET_MAX_BCN_OFFLD 16
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#define TARGET_NUM_WDS_ENTRIES 32
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#define TARGET_DMA_BURST_SIZE 1
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#define TARGET_RX_BATCHMODE 1
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#define ATH11K_HW_MAX_QUEUES 4
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#define ATH11K_QUEUE_LEN 4096
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#define ATH11k_HW_RATECODE_CCK_SHORT_PREAM_MASK 0x4
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#define ATH11K_FW_DIR "ath11k"
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/* IPQ8074 definitions */
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#define IPQ8074_FW_DIR "IPQ8074"
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#define IPQ8074_MAX_BOARD_DATA_SZ (256 * 1024)
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#define IPQ8074_MAX_CAL_DATA_SZ IPQ8074_MAX_BOARD_DATA_SZ
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#define ATH11K_BOARD_MAGIC "QCA-ATH11K-BOARD"
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#define ATH11K_BOARD_API2_FILE "board-2.bin"
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#define ATH11K_DEFAULT_BOARD_FILE "bdwlan.bin"
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#define ATH11K_DEFAULT_CAL_FILE "caldata.bin"
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enum ath11k_hw_rate_cck {
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ATH11K_HW_RATE_CCK_LP_11M = 0,
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ATH11K_HW_RATE_CCK_LP_5_5M,
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ATH11K_HW_RATE_CCK_LP_2M,
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ATH11K_HW_RATE_CCK_LP_1M,
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ATH11K_HW_RATE_CCK_SP_11M,
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ATH11K_HW_RATE_CCK_SP_5_5M,
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ATH11K_HW_RATE_CCK_SP_2M,
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};
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enum ath11k_hw_rate_ofdm {
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ATH11K_HW_RATE_OFDM_48M = 0,
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ATH11K_HW_RATE_OFDM_24M,
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ATH11K_HW_RATE_OFDM_12M,
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ATH11K_HW_RATE_OFDM_6M,
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ATH11K_HW_RATE_OFDM_54M,
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ATH11K_HW_RATE_OFDM_36M,
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ATH11K_HW_RATE_OFDM_18M,
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ATH11K_HW_RATE_OFDM_9M,
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};
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struct ath11k_hw_params {
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const char *name;
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struct {
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const char *dir;
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size_t board_size;
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size_t cal_size;
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} fw;
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};
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struct ath11k_fw_ie {
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__le32 id;
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__le32 len;
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u8 data[];
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};
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enum ath11k_bd_ie_board_type {
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ATH11K_BD_IE_BOARD_NAME = 0,
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ATH11K_BD_IE_BOARD_DATA = 1,
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};
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enum ath11k_bd_ie_type {
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/* contains sub IEs of enum ath11k_bd_ie_board_type */
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ATH11K_BD_IE_BOARD = 0,
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ATH11K_BD_IE_BOARD_EXT = 1,
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};
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#endif
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