[source] mac80211: fix tx issue with CCMP PN generated in hardware

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/f3747020e202883a43729fc245986f9e36289d6c

commit f3747020e202883a43729fc245986f9e36289d6c
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Mon Sep 12 11:25:20 2016 +0200

    mac80211: fix tx issue with CCMP PN generated in hardware
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 .../346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch b/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch
index 8ceed51..aba1ff4 100644
--- a/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch
+++ b/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch
@@ -404,7 +404,7 @@ Signed-off-by: Felix Fietkau <nbd at nbd.name>
  	sta->tx_stats.packets[skb_get_queue_mapping(skb)]++;
  
 -	if (fast_tx->pn_offs) {
-+	if (pn_offs) {
++	if (pn_offs && (key_conf->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
  		u64 pn;
 -		u8 *crypto_hdr = skb->data + fast_tx->pn_offs;
 +		u8 *crypto_hdr = skb->data + pn_offs;