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Subject[PATCH 23/37] staging:r8188eu: update rx_tail and pkt->tail synchronously
Date
To replace rx_tail with pkt->tail.
Now pkt->tail is equal to rx_tail and pkt->len is equal to len.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
---
drivers/staging/rtl8188eu/include/rtw_recv.h | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/rtl8188eu/include/rtw_recv.h b/drivers/staging/rtl8188eu/include/rtw_recv.h
index 9a3a978..34d13f8 100644
--- a/drivers/staging/rtl8188eu/include/rtw_recv.h
+++ b/drivers/staging/rtl8188eu/include/rtw_recv.h
@@ -279,17 +279,17 @@ static inline u8 *recvframe_put(struct recv_frame *precvframe, uint sz)
* and return the updated rx_tail to the caller */
/* after putting, rx_tail must be still larger than rx_end. */

+ u8 *tail;
+
if (precvframe == NULL)
return NULL;

- precvframe->rx_tail += sz;
-
- if (precvframe->rx_tail > precvframe->pkt->end) {
- precvframe->rx_tail -= sz;
+ tail = skb_put(precvframe->pkt, sz);
+ if (!tail)
return NULL;
- }
+ precvframe->rx_tail += sz;
precvframe->len += sz;
- return precvframe->rx_tail;
+ return tail;
}

static inline void recvframe_pull_tail(struct recv_frame *precvframe, uint sz)
@@ -302,11 +302,11 @@ static inline void recvframe_pull_tail(struct recv_frame *precvframe, uint sz)

if (precvframe == NULL)
return;
- precvframe->rx_tail -= sz;
- if (precvframe->rx_tail < precvframe->pkt->data) {
- precvframe->rx_tail += sz;
+
+ if (precvframe->len < sz)
return;
- }
+ precvframe->rx_tail -= sz;
+ skb_trim(precvframe->pkt, precvframe->pkt->len - sz);
precvframe->len -= sz;
}

--
2.7.3
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