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Commit 369bfd4e authored by Chopra, Manish's avatar Chopra, Manish Committed by David S. Miller
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qede: Disable tunnel offloads for non offloaded UDP ports 



This patch disables tunnel offloads via ndo_features_check()
if given UDP port is not offloaded to hardware. This in turn
allows to run multiple tunnel interfaces using different UDP ports.

Signed-off-by: default avatarManish Chopra <manish.chopra@cavium.com>
Signed-off-by: default avatarYuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 19489c7f

drivers/net/ethernet/qlogic/qede/qede_fp.c

+17 −6
Original line number Diff line number Diff line
@@ -1697,14 +1697,25 @@ netdev_features_t qede_features_check(struct sk_buff *skb, 
		}



		/* Disable offloads for geneve tunnels, as HW can't parse

		 * the geneve header which has option length greater than 32B.

		 * the geneve header which has option length greater than 32b

		 * and disable offloads for the ports which are not offloaded.

		 */

		if ((l4_proto == IPPROTO_UDP) &&

		    ((skb_inner_mac_header(skb) -

		      skb_transport_header(skb)) > QEDE_MAX_TUN_HDR_LEN))

		if (l4_proto == IPPROTO_UDP) {

			struct qede_dev *edev = netdev_priv(dev);

			u16 hdrlen, vxln_port, gnv_port;



			hdrlen = QEDE_MAX_TUN_HDR_LEN;

			vxln_port = edev->vxlan_dst_port;

			gnv_port = edev->geneve_dst_port;



			if ((skb_inner_mac_header(skb) -

			     skb_transport_header(skb)) > hdrlen ||

			     (ntohs(udp_hdr(skb)->dest) != vxln_port &&

			      ntohs(udp_hdr(skb)->dest) != gnv_port))

				return features & ~(NETIF_F_CSUM_MASK |

						    NETIF_F_GSO_MASK);

		}

	}



	return features;

}