datapath: vport: Remove compat support

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>

datapath/linux/compat/include/linux/if.h

@@ -3,13 +3,6 @@
 
 #include_next <linux/if.h>
 
-#include <linux/version.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,31)
-
-#define IFF_XMIT_DST_RELEASE 0
-
-#endif /* linux kernel < 2.6.31 */
-
 #ifndef IFF_TX_SKB_SHARING
 #define IFF_TX_SKB_SHARING 0
 #endif

datapath/linux/compat/include/net/ip.h

@@ -4,12 +4,6 @@
 #include_next <net/ip.h>
 
 #include <linux/version.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
-
-extern int		__ip_local_out(struct sk_buff *skb);
-extern int		ip_local_out(struct sk_buff *skb);
-
-#endif /* linux kernel < 2.6.25 */
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0)
 static inline bool ip_is_fragment(const struct iphdr *iph)

datapath/vport-internal_dev.c

@@ -41,9 +41,6 @@
 
 struct internal_dev {
 	struct vport *vport;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
-	struct net_device_stats stats;
-#endif
 };
 
 static struct internal_dev *internal_dev_priv(struct net_device *netdev)
@@ -59,11 +56,7 @@ static struct rtnl_link_stats64 *internal_dev_get_stats(struct net_device *netde
 #else
 static struct net_device_stats *internal_dev_sys_stats(struct net_device *netdev)
 {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
-	struct net_device_stats *stats = &internal_dev_priv(netdev)->stats;
-#else
 	struct net_device_stats *stats = &netdev->stats;
-#endif
 #endif
 	struct vport *vport = ovs_internal_dev_get_vport(netdev);
 	struct ovs_vport_stats vport_stats;
@@ -187,10 +180,8 @@ static void do_setup(struct net_device *netdev)
 	netdev->features = NETIF_F_LLTX | NETIF_F_SG | NETIF_F_FRAGLIST |
 			   NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_TSO;
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
 	netdev->vlan_features = netdev->features;
 	netdev->features |= NETIF_F_HW_VLAN_CTAG_TX;
-#endif
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
 	netdev->hw_features = netdev->features & ~NETIF_F_LLTX;
@@ -287,10 +278,6 @@ static int internal_dev_recv(struct vport *vport, struct sk_buff *skb)
 
 	netif_rx(skb);
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
-	netdev->last_rx = jiffies;
-#endif
-
 	return len;
 }
 

datapath/vport-lisp.c

@@ -20,7 +20,6 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/version.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
 
 #include <linux/in.h>
 #include <linux/ip.h>
@@ -646,6 +645,3 @@ const struct vport_ops ovs_lisp_vport_ops = {
 	.get_options	= lisp_get_options,
 	.send		= lisp_tnl_send,
 };
-#else
-#warning LISP tunneling will not be available on kernels before 2.6.26
-#endif /* Linux kernel < 2.6.26 */

datapath/vport-netdev.c

@@ -80,7 +80,7 @@ static struct sk_buff *netdev_frame_hook(struct sk_buff *skb)
 
 	return NULL;
 }
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
 /*
  * Used as br_handle_frame_hook.  (Cannot run bridge at the same time, even on
  * different set of devices!)
@@ -92,17 +92,6 @@ static struct sk_buff *netdev_frame_hook(struct net_bridge_port *p,
 	netdev_port_receive((struct vport *)p, skb);
 	return NULL;
 }
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-/*
- * Used as br_handle_frame_hook.  (Cannot run bridge at the same time, even on
- * different set of devices!)
- */
-/* Called with rcu_read_lock and bottom-halves disabled. */
-static int netdev_frame_hook(struct net_bridge_port *p, struct sk_buff **pskb)
-{
-	netdev_port_receive((struct vport *)p, *pskb);
-	return 1;
-}
 #else
 #error
 #endif
@@ -186,9 +175,6 @@ static struct vport *netdev_create(const struct vport_parms *parms)
 		goto error_master_upper_dev_unlink;
 
 	dev_set_promiscuity(netdev_vport->dev, 1);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
-	dev_disable_lro(netdev_vport->dev);
-#endif
 	netdev_vport->dev->priv_flags |= IFF_OVS_DATAPATH;
 	rtnl_unlock();
 

datapath/vport-vxlan.c

@@ -20,7 +20,6 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/version.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
 
 #include <linux/in.h>
 #include <linux/ip.h>
@@ -206,6 +205,3 @@ const struct vport_ops ovs_vxlan_vport_ops = {
 	.get_options	= vxlan_get_options,
 	.send		= vxlan_tnl_send,
 };
-#else
-#warning VXLAN tunneling will not be available on kernels before 2.6.26
-#endif /* Linux kernel < 2.6.26 */

datapath/vport.c

@@ -44,10 +44,8 @@ static const struct vport_ops *vport_ops_list[] = {
 	&ovs_gre_vport_ops,
 	&ovs_gre64_vport_ops,
 #endif
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
 	&ovs_vxlan_vport_ops,
 	&ovs_lisp_vport_ops,
-#endif
 };
 
 /* Protected by RCU read lock for reading, ovs_mutex for writing. */

vswitchd/vswitch.xml

@@ -1341,8 +1341,6 @@
 	      An Ethernet tunnel over the experimental, UDP-based VXLAN
 	      protocol described at
 	      <code>http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03</code>.
-	      VXLAN is currently supported only with the Linux kernel datapath
-	      with kernel version 2.6.26 or later.
 	    </p>
 	    <p>
 	      Open vSwitch uses UDP destination port 4789.  The source port used for
@@ -1354,8 +1352,7 @@
           <dt><code>lisp</code></dt>
           <dd>
             A layer 3 tunnel over the experimental, UDP-based Locator/ID
-            Separation Protocol (RFC 6830). LISP is currently supported only
+            Separation Protocol (RFC 6830).
-            with the Linux kernel datapath with kernel version 2.6.26 or later.
           </dd>
 
           <dt><code>patch</code></dt>