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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * NXP Wireless LAN device driver: utility functions4 *5 * Copyright 2011-2020 NXP6 */7 8#ifndef _MWIFIEX_UTIL_H_9#define _MWIFIEX_UTIL_H_10 11struct mwifiex_private;12 13struct mwifiex_dma_mapping {14 dma_addr_t addr;15 size_t len;16};17 18struct mwifiex_cb {19 struct mwifiex_dma_mapping dma_mapping;20 union {21 struct mwifiex_rxinfo rx_info;22 struct mwifiex_txinfo tx_info;23 };24};25 26/* size/addr for mwifiex_debug_info */27#define item_size(n) (sizeof_field(struct mwifiex_debug_info, n))28#define item_addr(n) (offsetof(struct mwifiex_debug_info, n))29 30/* size/addr for struct mwifiex_adapter */31#define adapter_item_size(n) (sizeof_field(struct mwifiex_adapter, n))32#define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n))33 34struct mwifiex_debug_data {35 char name[32]; /* variable/array name */36 u32 size; /* size of the variable/array */37 size_t addr; /* address of the variable/array */38 int num; /* number of variables in an array */39};40 41static inline struct mwifiex_rxinfo *MWIFIEX_SKB_RXCB(struct sk_buff *skb)42{43 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;44 45 BUILD_BUG_ON(sizeof(struct mwifiex_cb) > sizeof(skb->cb));46 return &cb->rx_info;47}48 49static inline struct mwifiex_txinfo *MWIFIEX_SKB_TXCB(struct sk_buff *skb)50{51 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;52 53 return &cb->tx_info;54}55 56static inline void mwifiex_store_mapping(struct sk_buff *skb,57 struct mwifiex_dma_mapping *mapping)58{59 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;60 61 memcpy(&cb->dma_mapping, mapping, sizeof(*mapping));62}63 64static inline void mwifiex_get_mapping(struct sk_buff *skb,65 struct mwifiex_dma_mapping *mapping)66{67 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;68 69 memcpy(mapping, &cb->dma_mapping, sizeof(*mapping));70}71 72static inline dma_addr_t MWIFIEX_SKB_DMA_ADDR(struct sk_buff *skb)73{74 struct mwifiex_dma_mapping mapping;75 76 mwifiex_get_mapping(skb, &mapping);77 78 return mapping.addr;79}80 81int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,82 struct mwifiex_debug_info *info);83 84static inline void le16_unaligned_add_cpu(__le16 *var, u16 val)85{86 put_unaligned_le16(get_unaligned_le16(var) + val, var);87}88 89#endif /* !_MWIFIEX_UTIL_H_ */90