From f2872a8fe27df310b755b7786151fc572ded053f Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Mon, 2 Mar 2009 16:01:53 -0800 Subject: [PATCH] igb: remove skb_orphan calls Remove skb_orphan call from igb driver as it can cause multiple issues due to the fact that it is calling the desctructor and removing the skb from the socket prior to transmission. The call was added to improve performance but did so by allowing the skb to be removed from the socket which gave the socket more window space to transmit. The performance gain is not worth the extra problems that this kind of workaround can introduce as this could lead to a potential DoS if a UDP stream decided to monopolize the transmit path. Signed-off-by: Alexander Duyck Acked-by: Mitch Williams Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/igb_main.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 6cae258df96d0..78558f840fd24 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -3258,14 +3258,6 @@ static int igb_xmit_frame_ring_adv(struct sk_buff *skb, if (unlikely(shtx->hardware)) { shtx->in_progress = 1; tx_flags |= IGB_TX_FLAGS_TSTAMP; - } else if (likely(!shtx->software)) { - /* - * TODO: can this be solved in dev.c:dev_hard_start_xmit()? - * There are probably unmodified driver which do something - * like this and thus don't work in combination with - * SOF_TIMESTAMPING_TX_SOFTWARE. - */ - skb_orphan(skb); } if (adapter->vlgrp && vlan_tx_tag_present(skb)) { @@ -4253,9 +4245,6 @@ static void igb_tx_hwtstamp(struct igb_adapter *adapter, struct sk_buff *skb) timecompare_transform(&adapter->compare, ns); skb_tstamp_tx(skb, &shhwtstamps); } - - /* delayed orphaning: skb_tstamp_tx() needs the socket */ - skb_orphan(skb); } } -- 2.39.5