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Date: Tue, 1 Jul 2014 21:32:49 -0700 (PDT)
From: Tom Herbert <therbert@...gle.com>
To: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 5/8] vxlan: Call udp_flow_src_port
In vxlan and OVS vport-vxlan call common function to get source port
for a UDP tunnel. Removed vxlan_src_port since the functionality is
now in udp_flow_src_port.
Signed-off-by: Tom Herbert <therbert@...gle.com>
---
drivers/net/vxlan.c | 26 ++------------------------
include/net/vxlan.h | 2 --
net/openvswitch/vport-vxlan.c | 5 +----
3 files changed, 3 insertions(+), 30 deletions(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index ade33ef..c2d3601 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1570,25 +1570,6 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb)
return false;
}
-/* Compute source port for outgoing packet
- * first choice to use L4 flow hash since it will spread
- * better and maybe available from hardware
- * secondary choice is to use jhash on the Ethernet header
- */
-__be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb)
-{
- unsigned int range = (port_max - port_min) + 1;
- u32 hash;
-
- hash = skb_get_hash(skb);
- if (!hash)
- hash = jhash(skb->data, 2 * ETH_ALEN,
- (__force u32) skb->protocol);
-
- return htons((((u64) hash * range) >> 32) + port_min);
-}
-EXPORT_SYMBOL_GPL(vxlan_src_port);
-
static inline struct sk_buff *vxlan_handle_offloads(struct sk_buff *skb,
bool udp_csum)
{
@@ -1807,7 +1788,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
if (tos == 1)
tos = ip_tunnel_get_dsfield(old_iph, skb);
- src_port = vxlan_src_port(vxlan->port_min, vxlan->port_max, skb);
+ src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->port_min,
+ vxlan->port_max, true);
if (dst->sa.sa_family == AF_INET) {
memset(&fl4, 0, sizeof(fl4));
@@ -2235,7 +2217,6 @@ static void vxlan_setup(struct net_device *dev)
{
struct vxlan_dev *vxlan = netdev_priv(dev);
unsigned int h;
- int low, high;
eth_hw_addr_random(dev);
ether_setup(dev);
@@ -2272,9 +2253,6 @@ static void vxlan_setup(struct net_device *dev)
vxlan->age_timer.function = vxlan_cleanup;
vxlan->age_timer.data = (unsigned long) vxlan;
- inet_get_local_port_range(dev_net(dev), &low, &high);
- vxlan->port_min = low;
- vxlan->port_max = high;
vxlan->dst_port = htons(vxlan_port);
vxlan->dev = dev;
diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index 12196ce6..d5f59f3 100644
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -45,8 +45,6 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
__be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
__be16 src_port, __be16 dst_port, __be32 vni, bool xnet);
-__be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb);
-
/* IP header + UDP + VXLAN + Ethernet header */
#define VXLAN_HEADROOM (20 + 8 + 8 + 14)
/* IPv6 header + UDP + VXLAN + Ethernet header */
diff --git a/net/openvswitch/vport-vxlan.c b/net/openvswitch/vport-vxlan.c
index 0edbd95..d8b7e24 100644
--- a/net/openvswitch/vport-vxlan.c
+++ b/net/openvswitch/vport-vxlan.c
@@ -143,8 +143,6 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
struct rtable *rt;
struct flowi4 fl;
__be16 src_port;
- int port_min;
- int port_max;
__be16 df;
int err;
@@ -172,8 +170,7 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
skb->ignore_df = 1;
- inet_get_local_port_range(net, &port_min, &port_max);
- src_port = vxlan_src_port(port_min, port_max, skb);
+ src_port = udp_flow_src_port(net, skb, 0, 0, true);
err = vxlan_xmit_skb(vxlan_port->vs, rt, skb,
fl.saddr, OVS_CB(skb)->tun_key->ipv4_dst,
--
2.0.0.526.g5318336
--
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