From: Alex Gartrell <agartr...@fb.com>
This is necessary as we'll be trying to schedule icmp later and we'll want
to share this code.
Signed-off-by: Alex Gartrell <agartr...@fb.com>
Acked-by: Julian Anastasov <j...@ssi.bg>
Signed-off-by: Simon Horman <ho...@verge.net.au>
---
net/netfilter/ipvs/ip_vs_core.c | 60 +++++++++++++++++++++++++--------------
1 file changed, 39 insertions(+), 21 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index bb998d4..2c44e34 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1327,6 +1327,42 @@ ip_vs_local_reply6(const struct nf_hook_ops *ops, struct
sk_buff *skb,
#endif
+static unsigned int
+ip_vs_try_to_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
+ int *verdict, struct ip_vs_conn **cpp,
+ struct ip_vs_iphdr *iph)
+{
+ struct ip_vs_protocol *pp = pd->pp;
+
+ if (!iph->fragoffs) {
+ /* No (second) fragments need to enter here, as nf_defrag_ipv6
+ * replayed fragment zero will already have created the cp
+ */
+
+ /* Schedule and create new connection entry into cpp */
+ if (!pp->conn_schedule(af, skb, pd, verdict, cpp, iph))
+ return 0;
+ }
+
+ if (unlikely(!*cpp)) {
+ /* sorry, all this trouble for a no-hit :) */
+ IP_VS_DBG_PKT(12, af, pp, skb, iph->off,
+ "ip_vs_in: packet continues traversal as normal");
+ if (iph->fragoffs) {
+ /* Fragment that couldn't be mapped to a conn entry
+ * is missing module nf_defrag_ipv6
+ */
+ IP_VS_DBG_RL("Unhandled frag, load nf_defrag_ipv6\n");
+ IP_VS_DBG_PKT(7, af, pp, skb, iph->off,
+ "unhandled fragment");
+ }
+ *verdict = NF_ACCEPT;
+ return 0;
+ }
+
+ return 1;
+}
+
/*
* Handle ICMP messages in the outside-to-inside direction (incoming).
* Find any that might be relevant, check against existing connections,
@@ -1690,33 +1726,15 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int
af)
cp = NULL;
}
- if (unlikely(!cp) && !iph.fragoffs) {
- /* No (second) fragments need to enter here, as nf_defrag_ipv6
- * replayed fragment zero will already have created the cp
- */
+ if (unlikely(!cp)) {
int v;
- /* Schedule and create new connection entry into &cp */
- if (!pp->conn_schedule(af, skb, pd, &v, &cp, &iph))
+ if (!ip_vs_try_to_schedule(af, skb, pd, &v, &cp, &iph))
return v;
}
- if (unlikely(!cp)) {
- /* sorry, all this trouble for a no-hit :) */
- IP_VS_DBG_PKT(12, af, pp, skb, 0,
- "ip_vs_in: packet continues traversal as normal");
- if (iph.fragoffs) {
- /* Fragment that couldn't be mapped to a conn entry
- * is missing module nf_defrag_ipv6
- */
- IP_VS_DBG_RL("Unhandled frag, load nf_defrag_ipv6\n");
- IP_VS_DBG_PKT(7, af, pp, skb, iph.off,
- "unhandled fragment");
- }
- return NF_ACCEPT;
- }
-
IP_VS_DBG_PKT(11, af, pp, skb, iph.off, "Incoming packet");
+
/* Check the server status */
if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) {
/* the destination server is not available */
--
1.7.10.4
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