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commit 2ea824143172e38b4387ef23b8685cebaee21c69
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Author: Pravin B Shelar <pshelar@nicira.com>
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Date: Tue Sep 24 18:42:43 2013 -0700
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datapath: Backport __ip_select_ident() function
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definition of __ip_select_ident() changed in newer kernel and
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it is backported to stable kernel, Therefore adding configure
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check to detect the new function.
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Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
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Acked-by: Andy Zhou <azhou@nicira.com>
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diff --git a/acinclude.m4 b/acinclude.m4
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index 7e036e5..b0794d2 100644
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--- a/acinclude.m4
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+++ b/acinclude.m4
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@@ -284,6 +284,8 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
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OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
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OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
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+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
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+ [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
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OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
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OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
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diff --git a/datapath/linux/compat/ip_tunnels_core.c b/datapath/linux/compat/ip_tunnels_core.c
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index d650be2..a70aefc 100644
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--- a/datapath/linux/compat/ip_tunnels_core.c
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+++ b/datapath/linux/compat/ip_tunnels_core.c
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@@ -70,7 +70,12 @@ int iptunnel_xmit(struct rtable *rt,
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iph->daddr = dst;
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iph->saddr = src;
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iph->ttl = ttl;
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+
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+#ifdef HAVE_IP_SELECT_IDENT_USING_DST_ENTRY
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__ip_select_ident(iph, &rt_dst(rt), (skb_shinfo(skb)->gso_segs ?: 1) - 1);
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+#else
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+ __ip_select_ident(iph, skb_shinfo(skb)->gso_segs ?: 1);
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+#endif
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err = ip_local_out(skb);
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if (unlikely(net_xmit_eval(err)))
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