diff mbox series

[net-next,v5,15/15] virtio_net: introduce virtnet_build_skb()

Message ID 20230508061417.65297-16-xuanzhuo@linux.alibaba.com (mailing list archive)
State Accepted
Commit 21e26a71f5d3cae2551abcda318263a6a8c15206
Delegated to: Netdev Maintainers
Headers show
Series virtio_net: refactor xdp codes | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers success CCed 14 of 14 maintainers
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 65 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Xuan Zhuo May 8, 2023, 6:14 a.m. UTC 
This logic is used in multiple places, now we separate it into
a helper.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
 drivers/net/virtio_net.c | 34 +++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 37287ede1959..97241006d64a 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -443,6 +443,22 @@  static unsigned int mergeable_ctx_to_truesize(void *mrg_ctx)
 	return (unsigned long)mrg_ctx & ((1 << MRG_CTX_HEADER_SHIFT) - 1);
 }
 
+static struct sk_buff *virtnet_build_skb(void *buf, unsigned int buflen,
+					 unsigned int headroom,
+					 unsigned int len)
+{
+	struct sk_buff *skb;
+
+	skb = build_skb(buf, buflen);
+	if (unlikely(!skb))
+		return NULL;
+
+	skb_reserve(skb, headroom);
+	skb_put(skb, len);
+
+	return skb;
+}
+
 /* Called from bottom half context */
 static struct sk_buff *page_to_skb(struct virtnet_info *vi,
 				   struct receive_queue *rq,
@@ -476,13 +492,10 @@  static struct sk_buff *page_to_skb(struct virtnet_info *vi,
 
 	/* copy small packet so we can reuse these pages */
 	if (!NET_IP_ALIGN && len > GOOD_COPY_LEN && tailroom >= shinfo_size) {
-		skb = build_skb(buf, truesize);
+		skb = virtnet_build_skb(buf, truesize, p - buf, len);
 		if (unlikely(!skb))
 			return NULL;
 
-		skb_reserve(skb, p - buf);
-		skb_put(skb, len);
-
 		page = (struct page *)page->private;
 		if (page)
 			give_pages(rq, page);
@@ -946,13 +959,10 @@  static struct sk_buff *receive_small_build_skb(struct virtnet_info *vi,
 	buflen = SKB_DATA_ALIGN(GOOD_PACKET_LEN + headroom) +
 		SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 
-	skb = build_skb(buf, buflen);
-	if (!skb)
+	skb = virtnet_build_skb(buf, buflen, headroom, len);
+	if (unlikely(!skb))
 		return NULL;
 
-	skb_reserve(skb, headroom);
-	skb_put(skb, len);
-
 	buf += header_offset;
 	memcpy(skb_vnet_hdr(skb), buf, vi->hdr_len);
 
@@ -1028,12 +1038,10 @@  static struct sk_buff *receive_small_xdp(struct net_device *dev,
 		goto err_xdp;
 	}
 
-	skb = build_skb(buf, buflen);
-	if (!skb)
+	skb = virtnet_build_skb(buf, buflen, xdp.data - buf, len);
+	if (unlikely(!skb))
 		goto err;
 
-	skb_reserve(skb, xdp.data - buf);
-	skb_put(skb, len);
 	if (metasize)
 		skb_metadata_set(skb, metasize);