diff mbox series

[net-next,v3,03/12] xgbe: switch to more generic VxLAN detection

Message ID 20200714191830.694674-4-kuba@kernel.org
State Accepted
Delegated to: David Miller
Headers show
Series udp_tunnel: NIC RX port offload infrastructure | expand

Commit Message

Jakub Kicinski July 14, 2020, 7:18 p.m. UTC
Instead of looping though the list of ports just check
if the geometry of the packet is correct for VxLAN.
HW most likely doesn't care about the exact port, anyway,
since only first port is actually offloaded, and this way
we won't have to maintain the port list at all.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 27 +++++++-----------------
 1 file changed, 8 insertions(+), 19 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index a87264f95f1a..dfeddf5fbf78 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -1773,13 +1773,8 @@  static int xgbe_prep_tso(struct sk_buff *skb, struct xgbe_packet_data *packet)
 	return 0;
 }
 
-static bool xgbe_is_vxlan(struct xgbe_prv_data *pdata, struct sk_buff *skb)
+static bool xgbe_is_vxlan(struct sk_buff *skb)
 {
-	struct xgbe_vxlan_data *vdata;
-
-	if (pdata->vxlan_force_disable)
-		return false;
-
 	if (!skb->encapsulation)
 		return false;
 
@@ -1801,19 +1796,13 @@  static bool xgbe_is_vxlan(struct xgbe_prv_data *pdata, struct sk_buff *skb)
 		return false;
 	}
 
-	/* See if we have the UDP port in our list */
-	list_for_each_entry(vdata, &pdata->vxlan_ports, list) {
-		if ((skb->protocol == htons(ETH_P_IP)) &&
-		    (vdata->sa_family == AF_INET) &&
-		    (vdata->port == udp_hdr(skb)->dest))
-			return true;
-		else if ((skb->protocol == htons(ETH_P_IPV6)) &&
-			 (vdata->sa_family == AF_INET6) &&
-			 (vdata->port == udp_hdr(skb)->dest))
-			return true;
-	}
+	if (skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
+	    skb->inner_protocol != htons(ETH_P_TEB) ||
+	    (skb_inner_mac_header(skb) - skb_transport_header(skb) !=
+	     sizeof(struct udphdr) + sizeof(struct vxlanhdr)))
+		return false;
 
-	return false;
+	return true;
 }
 
 static int xgbe_is_tso(struct sk_buff *skb)
@@ -1864,7 +1853,7 @@  static void xgbe_packet_info(struct xgbe_prv_data *pdata,
 		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
 			       CSUM_ENABLE, 1);
 
-	if (xgbe_is_vxlan(pdata, skb))
+	if (xgbe_is_vxlan(skb))
 		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
 			       VXLAN, 1);