linux-kernel - [PATCH v3] ipvs: Add traffic statistic up even it is VS/DR or VS/TUN mode

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Date:   Wed, 30 Sep 2020 09:26:10 +0800
From:   "longguang.yue" <bigclouds@....com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     kuba@...nel.org, yuelongguang@...il.com,
        "longguang.yue" <bigclouds@....com>,
        Wensong Zhang <wensong@...ux-vs.org>,
        Simon Horman <horms@...ge.net.au>,
        Julian Anastasov <ja@....bg>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        netdev@...r.kernel.org (open list:IPVS),
        lvs-devel@...r.kernel.org (open list:IPVS),
        netfilter-devel@...r.kernel.org (open list:NETFILTER),
        coreteam@...filter.org (open list:NETFILTER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3] ipvs: Add traffic statistic up even it is VS/DR or VS/TUN mode

It's ipvs's duty to do traffic statistic if packets get hit,
no matter what mode it is.

Signed-off-by: longguang.yue <bigclouds@....com>
---
 net/netfilter/ipvs/ip_vs_conn.c | 14 ++++++++++++--
 net/netfilter/ipvs/ip_vs_core.c |  5 ++++-
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index a90b8eac16ac..c4d164ce8ca7 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -401,6 +401,8 @@ struct ip_vs_conn *ip_vs_ct_in_get(const struct ip_vs_conn_param *p)
 struct ip_vs_conn *ip_vs_conn_out_get(const struct ip_vs_conn_param *p)
 {
 	unsigned int hash;
+	__be16 cport;
+	const union nf_inet_addr *caddr;
 	struct ip_vs_conn *cp, *ret=NULL;
 
 	/*
@@ -411,10 +413,18 @@ struct ip_vs_conn *ip_vs_conn_out_get(const struct ip_vs_conn_param *p)
 	rcu_read_lock();
 
 	hlist_for_each_entry_rcu(cp, &ip_vs_conn_tab[hash], c_list) {
-		if (p->vport == cp->cport && p->cport == cp->dport &&
+		cport = cp->dport;
+		caddr = &cp->daddr;
+
+		if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) {
+			cport = cp->vport;
+			caddr = &cp->vaddr;
+		}
+
+		if (p->vport == cp->cport && p->cport == cport &&
 		    cp->af == p->af &&
 		    ip_vs_addr_equal(p->af, p->vaddr, &cp->caddr) &&
-		    ip_vs_addr_equal(p->af, p->caddr, &cp->daddr) &&
+		    ip_vs_addr_equal(p->af, p->caddr, caddr) &&
 		    p->protocol == cp->protocol &&
 		    cp->ipvs == p->ipvs) {
 			if (!__ip_vs_conn_get(cp))
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index e3668a6e54e4..7ba88dab297a 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1413,8 +1413,11 @@ ip_vs_out(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, in
 			     ipvs, af, skb, &iph);
 
 	if (likely(cp)) {
-		if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
+		if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) {
+			ip_vs_out_stats(cp, skb);
+			skb->ipvs_property = 1;
 			goto ignore_cp;
+		}
 		return handle_response(af, skb, pd, cp, &iph, hooknum);
 	}
 
-- 
2.20.1 (Apple Git-117)