From: Florian Westphal <[email protected]>
Upstream commit:
commit cb9c68363efb6d1f950ec55fb06e031ee70db5fc
Author: Florian Westphal <[email protected]>
Date: Mon Jan 23 18:21:56 2017 +0100
skbuff: add and use skb_nfct helper
Followup patch renames skb->nfct and changes its type so add a helper to
avoid intrusive rename change later.
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: Jarno Rajahalme <[email protected]>
---
acinclude.m4 | 1 +
datapath/conntrack.c | 6 +++---
datapath/linux/compat/include/linux/skbuff.h | 11 +++++++++++
3 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/acinclude.m4 b/acinclude.m4
index 5ffb5a7..caf42cb 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -607,6 +607,7 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
[OVS_DEFINE([HAVE_BOOL_TYPE])])
diff --git a/datapath/conntrack.c b/datapath/conntrack.c
index 36db32a..ec354c3 100644
--- a/datapath/conntrack.c
+++ b/datapath/conntrack.c
@@ -763,8 +763,8 @@ static int __ovs_ct_lookup(struct net *net, struct
sw_flow_key *key,
/* Associate skb with specified zone. */
if (tmpl) {
- if (skb->nfct)
- nf_conntrack_put(skb->nfct);
+ if (skb_nfct(skb))
+ nf_conntrack_put(skb_nfct(skb));
nf_conntrack_get(&tmpl->ct_general);
skb->nfct = &tmpl->ct_general;
skb->nfctinfo = IP_CT_NEW;
@@ -861,7 +861,7 @@ static int ovs_ct_lookup(struct net *net, struct
sw_flow_key *key,
if (err)
return err;
- ct = (struct nf_conn *)skb->nfct;
+ ct = (struct nf_conn *)skb_nfct(skb);
if (ct)
nf_ct_deliver_cached_events(ct);
}
diff --git a/datapath/linux/compat/include/linux/skbuff.h
b/datapath/linux/compat/include/linux/skbuff.h
index 6c45939..2a6cf2f 100644
--- a/datapath/linux/compat/include/linux/skbuff.h
+++ b/datapath/linux/compat/include/linux/skbuff.h
@@ -376,4 +376,15 @@ static inline __wsum lco_csum(struct sk_buff *skb)
return csum_partial(l4_hdr, csum_start - l4_hdr, partial);
}
#endif
+
+#ifndef HAVE_SKB_NFCT
+static inline struct nf_conntrack *skb_nfct(const struct sk_buff *skb)
+{
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
+ return skb->nfct;
+#else
+ return NULL;
+#endif
+}
+#endif
#endif
--
2.1.4
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