[PATCH net-next 1/2] ip_gre: allow CSUM capable devices to handle packets

[PATCH net-next 1/2] ip_gre: allow CSUM capable devices to handle packets

[Dmitry Kravkov]

If device is not able to handle checksumming it will
be handled in dev_xmit

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
---
 net/ipv4/ip_gre.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index a56f118..cdc31ac 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -745,12 +745,9 @@ static struct sk_buff *handle_offloads(struct sk_buff *skb)
 			goto error;
 		skb_shinfo(skb)->gso_type |= SKB_GSO_GRE;
 		return skb;
-	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		err = skb_checksum_help(skb);
-		if (unlikely(err))
-			goto error;
 	}
-	skb->ip_summed = CHECKSUM_NONE;
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		skb->ip_summed = CHECKSUM_NONE;
 
 	return skb;
 
-- 
1.7.7.2

[PATCH net-next 2/2] ip_gre: propogate target device GSO capability to the tunnel device

[Dmitry Kravkov]

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
---
 net/ipv4/ip_gre.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index cdc31ac..31bc941 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1103,8 +1103,14 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
 	tunnel->hlen = addend;
 	/* TCP offload with GRE SEQ is not supported. */
 	if (!(tunnel->parms.o_flags & GRE_SEQ)) {
-		dev->features		|= NETIF_F_GSO_SOFTWARE;
-		dev->hw_features	|= NETIF_F_GSO_SOFTWARE;
+		/* device supports enc gso offload*/
+		if (tdev->hw_enc_features & NETIF_F_GRE_GSO) {
+			dev->features		|= NETIF_F_TSO;
+			dev->hw_features	|= NETIF_F_TSO;
+		} else {
+			dev->features		|= NETIF_F_GSO_SOFTWARE;
+			dev->hw_features	|= NETIF_F_GSO_SOFTWARE;
+		}
 	}
 
 	return mtu;
-- 
1.7.7.2

[PATCH net-next 2/2] ip_gre: propogate target device GSO capability to the tunnel device

[y]

From: Dmitry Kravkov <dmitry@broadcom.com>


Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
---
 net/ipv4/ip_gre.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index cdc31ac..31bc941 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1103,8 +1103,14 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
 	tunnel->hlen = addend;
 	/* TCP offload with GRE SEQ is not supported. */
 	if (!(tunnel->parms.o_flags & GRE_SEQ)) {
-		dev->features		|= NETIF_F_GSO_SOFTWARE;
-		dev->hw_features	|= NETIF_F_GSO_SOFTWARE;
+		/* device supports enc gso offload*/
+		if (tdev->hw_enc_features & NETIF_F_GRE_GSO) {
+			dev->features		|= NETIF_F_TSO;
+			dev->hw_features	|= NETIF_F_TSO;
+		} else {
+			dev->features		|= NETIF_F_GSO_SOFTWARE;
+			dev->hw_features	|= NETIF_F_GSO_SOFTWARE;
+		}
 	}
 
 	return mtu;
-- 
1.7.7.2