net: Fix IPv6 GSO type checks in Intel ethernet drivers

Found this problem when testing IPv6 from a KVM guest to a remote
host via e1000e device on the host.
The following patch fixes the check for IPv6 GSO packet in Intel
ethernet drivers to use skb_is_gso_v6(). SKB_GSO_DODGY is also set
when packets are forwarded from a guest.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 3d88710..57f149b 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -3786,7 +3786,7 @@
 		                                         0, IPPROTO_TCP, 0);
 		cmd_length = E1000_TXD_CMD_IP;
 		ipcse = skb_transport_offset(skb) - 1;
-	} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
+	} else if (skb_is_gso_v6(skb)) {
 		ipv6_hdr(skb)->payload_len = 0;
 		tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
 		                                       &ipv6_hdr(skb)->daddr,
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 2ca1734..997124d 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -3422,7 +3422,7 @@
 							 iph->daddr, 0,
 							 IPPROTO_TCP,
 							 0);
-	} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
+	} else if (skb_is_gso_v6(skb)) {
 		ipv6_hdr(skb)->payload_len = 0;
 		tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
 						       &ipv6_hdr(skb)->daddr,
diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c
index 43c8375..297a5dd 100644
--- a/drivers/net/igbvf/netdev.c
+++ b/drivers/net/igbvf/netdev.c
@@ -1963,7 +1963,7 @@
 		                                         iph->daddr, 0,
 		                                         IPPROTO_TCP,
 		                                         0);
-	} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
+	} else if (skb_is_gso_v6(skb)) {
 		ipv6_hdr(skb)->payload_len = 0;
 		tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
 		                                       &ipv6_hdr(skb)->daddr,
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 6d61add..b5f64ad 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4928,7 +4928,7 @@
 			                                         iph->daddr, 0,
 			                                         IPPROTO_TCP,
 			                                         0);
-		} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
+		} else if (skb_is_gso_v6(skb)) {
 			ipv6_hdr(skb)->payload_len = 0;
 			tcp_hdr(skb)->check =
 			    ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,