[PATCH v2 net-next 3/5] geneve: Pass struct geneve_dev to geneve_find_sock().

[Kuniyuki Iwashima <kuniyu@google.com>]

This is a prep patch to make a subsequent patch clean.

We will need to access geneve_dev->cfg.info.key.u.{ipv4,ipv6}.src
in geneve_find_sock() later and extend conditions there.

Let's pass down struct geneve from geneve_sock_add() to
geneve_find_sock() and flatten the conditional logic.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
---
 drivers/net/geneve.c | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 7e8c3023842e..4f841eced028 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -1040,35 +1040,41 @@ static void geneve_sock_release(struct geneve_dev *geneve)
 #endif
 }
 
-static struct geneve_sock *geneve_find_sock(struct geneve_net *gn,
-					    sa_family_t family,
-					    __be16 dst_port,
-					    bool gro_hint)
+static struct geneve_sock *geneve_find_sock(struct net *net,
+					    struct geneve_dev *geneve, bool ipv6)
 {
+	struct geneve_net *gn = net_generic(net, geneve_net_id);
+	struct ip_tunnel_info *info = &geneve->cfg.info;
+	sa_family_t family = ipv6 ? AF_INET6 : AF_INET;
+	bool gro_hint = geneve->cfg.gro_hint;
+	__be16 dst_port = info->key.tp_dst;
 	struct geneve_sock *gs;
 
 	list_for_each_entry(gs, &gn->sock_list, list) {
-		if (inet_sk(gs->sk)->inet_sport == dst_port &&
-		    geneve_get_sk_family(gs) == family &&
-		    gs->gro_hint == gro_hint) {
-			return gs;
-		}
+		if (inet_sk(gs->sk)->inet_sport != dst_port)
+			continue;
+
+		if (geneve_get_sk_family(gs) != family)
+			continue;
+
+		if (gs->gro_hint != gro_hint)
+			continue;
+
+		return gs;
 	}
+
 	return NULL;
 }
 
 static int geneve_sock_add(struct geneve_dev *geneve, bool ipv6)
 {
 	struct net *net = geneve->net;
-	struct geneve_net *gn = net_generic(net, geneve_net_id);
-	bool gro_hint = geneve->cfg.gro_hint;
 	struct geneve_dev_node *node;
 	struct geneve_sock *gs;
 	__u8 vni[3];
 	__u32 hash;
 
-	gs = geneve_find_sock(gn, ipv6 ? AF_INET6 : AF_INET,
-			      geneve->cfg.info.key.tp_dst, gro_hint);
+	gs = geneve_find_sock(net, geneve, ipv6);
 	if (gs) {
 		gs->refcnt++;
 		goto out;
@@ -1080,7 +1086,7 @@ static int geneve_sock_add(struct geneve_dev *geneve, bool ipv6)
 
 out:
 	gs->collect_md = geneve->cfg.collect_md;
-	gs->gro_hint = gro_hint;
+	gs->gro_hint = geneve->cfg.gro_hint;
 #if IS_ENABLED(CONFIG_IPV6)
 	if (ipv6) {
 		rcu_assign_pointer(geneve->sock6, gs);
-- 
2.54.0.746.g67dd491aae-goog