[PATCH net-next 2/7] net: dsa: remove useless rcv copy in DSA tree

[Vivien Didelot]

The dsa_switch_tree holds a copy of the rcv member of the dsa_device_ops
structure. dst->rcv is always assigned to dst->tag_ops->rcv. Remove this
useless copy.

Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
 include/net/dsa.h | 4 ----
 net/dsa/dsa.c     | 4 ++--
 net/dsa/dsa2.c    | 2 --
 net/dsa/legacy.c  | 2 --
 4 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index cb5d668b265d..4b82766715e9 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -126,10 +126,6 @@ struct dsa_switch_tree {
         * protocol to use.
         */
        struct net_device       *master_netdev;
-       struct sk_buff *        (*rcv)(struct sk_buff *skb,
-                                      struct net_device *dev,
-                                      struct packet_type *pt,
-                                      struct net_device *orig_dev);
 
        /*
         * Original copy of the master netdev ethtool_ops
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 7a8a0358299b..861dc0e5020d 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -29,7 +29,7 @@
 
 bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
 {
-       return !!dst->rcv;
+       return dst->tag_ops && dst->tag_ops->rcv;
 }
 
 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
@@ -209,7 +209,7 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct 
net_device *dev,
        if (!skb)
                return 0;
 
-       nskb = dst->rcv(skb, dev, pt, orig_dev);
+       nskb = dst->tag_ops->rcv(skb, dev, pt, orig_dev);
        if (!nskb) {
                kfree_skb(skb);
                return 0;
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 4301f52e4f5a..12306c15ed51 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -528,8 +528,6 @@ static int dsa_cpu_parse(struct dsa_port *port, u32 index,
                return PTR_ERR(dst->tag_ops);
        }
 
-       dst->rcv = dst->tag_ops->rcv;
-
        return 0;
 }
 
diff --git a/net/dsa/legacy.c b/net/dsa/legacy.c
index ac4379b8d7ac..738c5c2d7d3c 100644
--- a/net/dsa/legacy.c
+++ b/net/dsa/legacy.c
@@ -150,8 +150,6 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, 
struct device *parent)
                dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
                if (IS_ERR(dst->tag_ops))
                        return PTR_ERR(dst->tag_ops);
-
-               dst->rcv = dst->tag_ops->rcv;
        }
 
        memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable));
-- 
2.13.0