datapath: Check for backported sctp_compute_cksum().

This is backported by RHEL7. Reported-by: Ashok Byahatti <[email protected]> Signed-off-by: Jesse Gross <[email protected]> Acked-by: Joe Stringer <[email protected]>
Milstein · Jan 4, 2014 · c4e976d · c4e976d
1 parent 004a624
commit c4e976d
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/acinclude.m4 b/acinclude.m4
@@ -281,6 +281,8 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
 
+  OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
+
   OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
                   [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
 

diff --git a/datapath/linux/compat/include/net/sctp/checksum.h b/datapath/linux/compat/include/net/sctp/checksum.h
@@ -1,10 +1,9 @@
 #ifndef __SCTP_CHECKSUM_WRAPPER_H
 #define __SCTP_CHECKSUM_WRAPPER_H 1
 
-#include <linux/version.h>
 #include_next <net/sctp/checksum.h>
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,12,0)
+#ifndef HAVE_SCTP_COMPUTE_CKSUM
 static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
 					unsigned int offset)
 {