From bda1b1b77918ea340bbfb2938a0fd7d5203e430c Mon Sep 17 00:00:00 2001 From: Yogesh Ashok Powar Date: Fri, 3 Aug 2012 18:06:01 -0700 Subject: [PATCH] mwifiex: correction in MSDU padding logic Padding arithmetic will always work for MSDUs provided first MSDU ends on 4-byte boundary. Fixing it by making sure that all MSDU ends on 4-byte boundary. Signed-off-by: Yogesh Ashok Powar Signed-off-by: Amitkumar Karwar Signed-off-by: Kiran Divekar Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/11n_aggr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mwifiex/11n_aggr.c b/drivers/net/wireless/mwifiex/11n_aggr.c index 04222f27665f..395f1bfd4102 100644 --- a/drivers/net/wireless/mwifiex/11n_aggr.c +++ b/drivers/net/wireless/mwifiex/11n_aggr.c @@ -82,8 +82,8 @@ mwifiex_11n_form_amsdu_pkt(struct sk_buff *skb_aggr, /* Add payload */ memcpy(skb_put(skb_aggr, skb_src->len), skb_src->data, skb_src->len); - *pad = (((skb_src->len + LLC_SNAP_LEN) & 3)) ? (4 - (((skb_src->len + - LLC_SNAP_LEN)) & 3)) : 0; + /* Add padding for new MSDU to start from 4 byte boundary */ + *pad = (4 - ((unsigned long)skb_aggr->tail & 0x3)) % 4; return skb_aggr->len + *pad; }