netdev - [PATCH net-next 2/4] net: gro: move skb_gro_receive_list to udp

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Date:   Mon, 15 Nov 2021 09:05:52 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 2/4] net: gro: move skb_gro_receive_list to udp_offload.c

From: Eric Dumazet <edumazet@...gle.com>

This helper is used once, no need to keep it in fat net/core/skbuff.c

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/linux/netdevice.h |  1 -
 net/core/skbuff.c         | 26 --------------------------
 net/ipv4/udp_offload.c    | 27 +++++++++++++++++++++++++++
 3 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d95c9839ce90d611f4b729c7c54e277446259c7a..ce6ee1453dbc3691fab13ee079347fbd49e587d3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2903,7 +2903,6 @@ struct net_device *dev_get_by_napi_id(unsigned int napi_id);
 int netdev_get_name(struct net *net, char *name, int ifindex);
 int dev_restart(struct net_device *dev);
 int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb);
-int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb);
 
 
 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 1c4f2a2e52550eef6eb6002314813983abb2e266..68b13bc77b749dbacf739a71ef7a1b5f48d89e0c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3920,32 +3920,6 @@ struct sk_buff *skb_segment_list(struct sk_buff *skb,
 }
 EXPORT_SYMBOL_GPL(skb_segment_list);
 
-int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
-{
-	if (unlikely(p->len + skb->len >= 65536))
-		return -E2BIG;
-
-	if (NAPI_GRO_CB(p)->last == p)
-		skb_shinfo(p)->frag_list = skb;
-	else
-		NAPI_GRO_CB(p)->last->next = skb;
-
-	skb_pull(skb, skb_gro_offset(skb));
-
-	NAPI_GRO_CB(p)->last = skb;
-	NAPI_GRO_CB(p)->count++;
-	p->data_len += skb->len;
-
-	/* sk owenrship - if any - completely transferred to the aggregated packet */
-	skb->destructor = NULL;
-	p->truesize += skb->truesize;
-	p->len += skb->len;
-
-	NAPI_GRO_CB(skb)->same_flow = 1;
-
-	return 0;
-}
-
 /**
  *	skb_segment - Perform protocol segmentation on skb.
  *	@head_skb: buffer to segment
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 7fbf9975e8c0e9f0aa6a707bb63b55628ca6add8..cbeb8965d1b771b4d50c888a42279287904304e9 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -425,6 +425,33 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
 	return segs;
 }
 
+static int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
+{
+	if (unlikely(p->len + skb->len >= 65536))
+		return -E2BIG;
+
+	if (NAPI_GRO_CB(p)->last == p)
+		skb_shinfo(p)->frag_list = skb;
+	else
+		NAPI_GRO_CB(p)->last->next = skb;
+
+	skb_pull(skb, skb_gro_offset(skb));
+
+	NAPI_GRO_CB(p)->last = skb;
+	NAPI_GRO_CB(p)->count++;
+	p->data_len += skb->len;
+
+	/* sk owenrship - if any - completely transferred to the aggregated packet */
+	skb->destructor = NULL;
+	p->truesize += skb->truesize;
+	p->len += skb->len;
+
+	NAPI_GRO_CB(skb)->same_flow = 1;
+
+	return 0;
+}
+
+
 #define UDP_GRO_CNT_MAX 64
 static struct sk_buff *udp_gro_receive_segment(struct list_head *head,
 					       struct sk_buff *skb)
-- 
2.34.0.rc1.387.gb447b232ab-goog