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qede: Disable tunnel offloads for non offloaded UDP ports

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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: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Chopra, Manish 2017-04-24 10:00:46 -07:00 committed by David S. Miller
parent 19489c7f0d
commit 369bfd4ec7
1 changed files with 17 additions and 6 deletions
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23
drivers/net/ethernet/qlogic/qede/qede_fp.c
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@ -1697,13 +1697,24 @@ 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))
return features & ~(NETIF_F_CSUM_MASK |
NETIF_F_GSO_MASK);
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;