mac80211: make align adjustment code support paged SKB
This fixed a BUG_ON in __skb_trim() when paged rx is used in
iwlwifi driver. Yes, the whole mac80211 stack doesn't support
paged SKB yet. But let's start the work slowly from small
code snippets.
Reported-and-tested-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 798fa82..c832d40 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1326,10 +1326,10 @@
skb = NULL;
} else {
u8 *data = skb->data;
- size_t len = skb->len;
- u8 *new = __skb_push(skb, align);
- memmove(new, data, len);
- __skb_trim(skb, len);
+ size_t len = skb_headlen(skb);
+ skb->data -= align;
+ memmove(skb->data, data, len);
+ skb_set_tail_pointer(skb, len);
}
}
#endif