Re: regression: tethering fails in 3.5 with iwlwifi
From: Eric Dumazet <hidden>
Date: 2012-09-20 13:22:08
Also in:
linux-wireless
Possibly related (same subject, not in this thread)
- 2013-03-23 · Re: regression: tethering fails in 3.5 with iwlwifi · Luis Henriques <hidden>
- 2013-03-22 · Re: regression: tethering fails in 3.5 with iwlwifi · Artem Bityutskiy <hidden>
- 2013-03-21 · Re: regression: tethering fails in 3.5 with iwlwifi · David Miller <davem@davemloft.net>
- 2013-03-21 · Re: regression: tethering fails in 3.5 with iwlwifi · Johannes Berg <johannes@sipsolutions.net>
- 2012-09-20 · Re: regression: tethering fails in 3.5 with iwlwifi · Eric Dumazet <hidden>
On Thu, 2012-09-20 at 16:22 +0300, Artem Bityutskiy wrote:
quoted hunk ↗ jump to hunk
OK, I've tried almost this (see below) and it solves my issue:diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 965e6ec..7f079d0 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c@@ -1798,9 +1798,13 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx) if (skb) { /* deliver to local stack */ - skb->protocol = eth_type_trans(skb, dev); - memset(skb->cb, 0, sizeof(skb->cb)); - netif_receive_skb(skb); + if (pskb_may_pull(skb, 40)) { + skb->protocol = eth_type_trans(skb, dev); + memset(skb->cb, 0, sizeof(skb->cb)); + netif_receive_skb(skb); + } else { + kfree_skb(skb); + } } }
OK but you cant do that, or small frames will be dropped. Anyway its a hack, we should find the buggy layer. You could use dropwatch (drop_monitor) to check where frame is dropped. modprobe drop_monitor dropwatch -l kas