[PATCH] staging: r8188eu: use proper type for second argiment of rtw_(aes|tkip|wep)_(decrypt|encrypt)

From: Ivan Safonov
Date: Sun Jul 26 2020 - 17:00:02 EST

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rtw_aes_decrypt, rtw_tkip_decrypt, rtw_wep_decrypt, rtw_aes_encrypt,
rtw_tkip_encrypt, rtw_wep_encrypt are takes (u8 *) second argiment and
always uses it as (struct recv_frame *) or (struct xmit_frame *).
This is causes a lot of unnecessary type casts
and complicates refactoring.

Signed-off-by: Ivan Safonov <insafonov@xxxxxxxxx>
---
drivers/staging/rtl8188eu/core/rtw_mlme_ext.c | 2 +-
drivers/staging/rtl8188eu/core/rtw_recv.c | 6 +--
drivers/staging/rtl8188eu/core/rtw_security.c | 50 +++++++++----------
drivers/staging/rtl8188eu/core/rtw_xmit.c | 6 +--
.../staging/rtl8188eu/include/rtw_security.h | 12 ++---
5 files changed, 38 insertions(+), 38 deletions(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
index 46a0ac08e90a..98b1ba2e489f 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
@@ -870,7 +870,7 @@ static void issue_auth(struct adapter *padapter, struct sta_info *psta,

pattrib->last_txcmdsz = pattrib->pktlen;

- rtw_wep_encrypt(padapter, (u8 *)pmgntframe);
+ rtw_wep_encrypt(padapter, pmgntframe);
DBG_88E("%s\n", __func__);
dump_mgntframe(padapter, pmgntframe);
}
diff --git a/drivers/staging/rtl8188eu/core/rtw_recv.c b/drivers/staging/rtl8188eu/core/rtw_recv.c
index 0a4c1b2686b5..5fe7a0458dd2 100644
--- a/drivers/staging/rtl8188eu/core/rtw_recv.c
+++ b/drivers/staging/rtl8188eu/core/rtw_recv.c
@@ -384,13 +384,13 @@ static struct recv_frame *decryptor(struct adapter *padapter,
switch (prxattrib->encrypt) {
case _WEP40_:
case _WEP104_:
- res = rtw_wep_decrypt(padapter, (u8 *)precv_frame);
+ res = rtw_wep_decrypt(padapter, precv_frame);
break;
case _TKIP_:
- res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
+ res = rtw_tkip_decrypt(padapter, precv_frame);
break;
case _AES_:
- res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
+ res = rtw_aes_decrypt(padapter, precv_frame);
break;
default:
break;
diff --git a/drivers/staging/rtl8188eu/core/rtw_security.c b/drivers/staging/rtl8188eu/core/rtw_security.c
index 57e171d3e48d..78a8ac60bf3d 100644
--- a/drivers/staging/rtl8188eu/core/rtw_security.c
+++ b/drivers/staging/rtl8188eu/core/rtw_security.c
@@ -129,12 +129,12 @@ static __le32 getcrc32(u8 *buf, int len)
/*
Need to consider the fragment situation
*/
-void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe)
+void rtw_wep_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
int curfragnum, length;
u8 *pframe;
u8 hw_hdr_offset = 0;
- struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct security_priv *psecuritypriv = &padapter->securitypriv;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
const int keyindex = psecuritypriv->dot11PrivacyKeyIndex;
@@ -142,16 +142,16 @@ void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe)
struct sk_buff *skb;
struct lib80211_crypto_ops *crypto_ops;

- if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
+ if (pxmitframe->buf_addr == NULL)
return;

if ((pattrib->encrypt != _WEP40_) && (pattrib->encrypt != _WEP104_))
return;

hw_hdr_offset = TXDESC_SIZE +
- (((struct xmit_frame *)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ);
+ (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);

- pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset;
+ pframe = pxmitframe->buf_addr + hw_hdr_offset;

crypto_ops = lib80211_get_crypto_ops("WEP");

@@ -198,13 +198,13 @@ void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe)
crypto_ops->deinit(crypto_private);
}

-int rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe)
+int rtw_wep_decrypt(struct adapter *padapter, struct recv_frame *precvframe)
{
- struct rx_pkt_attrib *prxattrib = &(((struct recv_frame *)precvframe)->attrib);
+ struct rx_pkt_attrib *prxattrib = &precvframe->attrib;

if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) {
struct security_priv *psecuritypriv = &padapter->securitypriv;
- struct sk_buff *skb = ((struct recv_frame *)precvframe)->pkt;
+ struct sk_buff *skb = precvframe->pkt;
u8 *pframe = skb->data;
void *crypto_private = NULL;
int status = _SUCCESS;
@@ -572,7 +572,7 @@ static void phase2(u8 *rc4key, const u8 *tk, const u16 *p1k, u16 iv16)
}

/* The hlen isn't include the IV */
-u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
+u32 rtw_tkip_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
{ /* exclude ICV */
u16 pnl;
u32 pnh;
@@ -586,17 +586,17 @@ u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
u8 *pframe, *payload, *iv, *prwskey;
union pn48 dot11txpn;
struct sta_info *stainfo;
- struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct security_priv *psecuritypriv = &padapter->securitypriv;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
u32 res = _SUCCESS;

- if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
+ if (pxmitframe->buf_addr == NULL)
return _FAIL;

hw_hdr_offset = TXDESC_SIZE +
- (((struct xmit_frame *)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ);
- pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset;
+ (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
+ pframe = pxmitframe->buf_addr + hw_hdr_offset;
/* 4 start to encrypt each fragment */
if (pattrib->encrypt == _TKIP_) {
if (pattrib->psta)
@@ -653,7 +653,7 @@ u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
}

/* The hlen isn't include the IV */
-u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
+u32 rtw_tkip_decrypt(struct adapter *padapter, struct recv_frame *precvframe)
{ /* exclude ICV */
u16 pnl;
u32 pnh;
@@ -666,12 +666,12 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
u8 *pframe, *payload, *iv, *prwskey;
union pn48 dot11txpn;
struct sta_info *stainfo;
- struct rx_pkt_attrib *prxattrib = &((struct recv_frame *)precvframe)->attrib;
+ struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
struct security_priv *psecuritypriv = &padapter->securitypriv;
u32 res = _SUCCESS;

- pframe = (unsigned char *)((struct recv_frame *)precvframe)->pkt->data;
+ pframe = (unsigned char *)precvframe->pkt->data;

/* 4 start to decrypt recvframe */
if (prxattrib->encrypt == _TKIP_) {
@@ -691,7 +691,7 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)

iv = pframe + prxattrib->hdrlen;
payload = pframe + prxattrib->iv_len + prxattrib->hdrlen;
- length = ((struct recv_frame *)precvframe)->pkt->len - prxattrib->hdrlen - prxattrib->iv_len;
+ length = precvframe->pkt->len - prxattrib->hdrlen - prxattrib->iv_len;

GET_TKIP_PN(iv, dot11txpn);

@@ -1214,7 +1214,7 @@ static int aes_cipher(u8 *key, uint hdrlen, u8 *pframe, uint plen)
return _SUCCESS;
}

-u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
+u32 rtw_aes_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
{ /* exclude ICV */

/*static*/
@@ -1225,20 +1225,20 @@ u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
u8 *pframe, *prwskey; /* *payload,*iv */
u8 hw_hdr_offset = 0;
struct sta_info *stainfo;
- struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct security_priv *psecuritypriv = &padapter->securitypriv;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;

/* uint offset = 0; */
u32 res = _SUCCESS;

- if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
+ if (pxmitframe->buf_addr == NULL)
return _FAIL;

hw_hdr_offset = TXDESC_SIZE +
- (((struct xmit_frame *)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ);
+ (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);

- pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset;
+ pframe = pxmitframe->buf_addr + hw_hdr_offset;

/* 4 start to encrypt each fragment */
if (pattrib->encrypt == _AES_) {
@@ -1276,9 +1276,9 @@ u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
return res;
}

-u32 rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe)
+u32 rtw_aes_decrypt(struct adapter *padapter, struct recv_frame *precvframe)
{
- struct rx_pkt_attrib *prxattrib = &((struct recv_frame *)precvframe)->attrib;
+ struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
u32 res = _SUCCESS;

/* 4 start to encrypt each fragment */
@@ -1288,7 +1288,7 @@ u32 rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe)
if (stainfo != NULL) {
int key_idx;
const int key_length = 16, iv_len = 8, icv_len = 8;
- struct sk_buff *skb = ((struct recv_frame *)precvframe)->pkt;
+ struct sk_buff *skb = precvframe->pkt;
void *crypto_private = NULL;
u8 *key, *pframe = skb->data;
struct lib80211_crypto_ops *crypto_ops = lib80211_get_crypto_ops("CCMP");
diff --git a/drivers/staging/rtl8188eu/core/rtw_xmit.c b/drivers/staging/rtl8188eu/core/rtw_xmit.c
index d3b1b32bbf76..314790fea1ae 100644
--- a/drivers/staging/rtl8188eu/core/rtw_xmit.c
+++ b/drivers/staging/rtl8188eu/core/rtw_xmit.c
@@ -713,13 +713,13 @@ static s32 xmitframe_swencrypt(struct adapter *padapter, struct xmit_frame *pxmi
switch (pattrib->encrypt) {
case _WEP40_:
case _WEP104_:
- rtw_wep_encrypt(padapter, (u8 *)pxmitframe);
+ rtw_wep_encrypt(padapter, pxmitframe);
break;
case _TKIP_:
- rtw_tkip_encrypt(padapter, (u8 *)pxmitframe);
+ rtw_tkip_encrypt(padapter, pxmitframe);
break;
case _AES_:
- rtw_aes_encrypt(padapter, (u8 *)pxmitframe);
+ rtw_aes_encrypt(padapter, pxmitframe);
break;
default:
break;
diff --git a/drivers/staging/rtl8188eu/include/rtw_security.h b/drivers/staging/rtl8188eu/include/rtw_security.h
index 2a3c58fbf805..8ba02a7cea60 100644
--- a/drivers/staging/rtl8188eu/include/rtw_security.h
+++ b/drivers/staging/rtl8188eu/include/rtw_security.h
@@ -292,11 +292,11 @@ void rtw_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nBytes);
void rtw_secgetmic(struct mic_data *pmicdata, u8 *dst);
void rtw_seccalctkipmic(u8 *key, u8 *header, u8 *data, u32 data_len,
u8 *Miccode, u8 priority);
-u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe);
-u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe);
-void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe);
-u32 rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe);
-u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe);
-int rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe);
+u32 rtw_aes_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
+u32 rtw_tkip_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
+void rtw_wep_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
+u32 rtw_aes_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
+u32 rtw_tkip_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
+int rtw_wep_decrypt(struct adapter *padapter, struct recv_frame *precvframe);

#endif /* __RTL871X_SECURITY_H_ */
--
2.26.2

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