From 822f8565c93949fb2d31502d595c8bc45629c9b7 Mon Sep 17 00:00:00 2001 From: Suresh Reddy Date: Wed, 13 Sep 2017 11:12:42 -0400 Subject: be2net: fix TSO6/GSO issue causing TX-stall on Lancer/BEx IPv6 TSO requests with extension hdrs are a problem to the Lancer and BEx chips. Workaround is to disable TSO6 feature for such packets. Also in Lancer chips, MSS less than 256 was resulting in TX stall. Fix this by disabling GSO when MSS less than 256. Signed-off-by: Suresh Reddy Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_main.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/net/ethernet/emulex/benet/be_main.c') diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 319eee36649b..0e3d9f39a807 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5089,6 +5089,20 @@ static netdev_features_t be_features_check(struct sk_buff *skb, struct be_adapter *adapter = netdev_priv(dev); u8 l4_hdr = 0; + if (skb_is_gso(skb)) { + /* IPv6 TSO requests with extension hdrs are a problem + * to Lancer and BE3 HW. Disable TSO6 feature. + */ + if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb)) + features &= ~NETIF_F_TSO6; + + /* Lancer cannot handle the packet with MSS less than 256. + * Disable the GSO support in such cases + */ + if (lancer_chip(adapter) && skb_shinfo(skb)->gso_size < 256) + features &= ~NETIF_F_GSO_MASK; + } + /* The code below restricts offload features for some tunneled and * Q-in-Q packets. * Offload features for normal (non tunnel) packets are unchanged. -- cgit