netdev - [PATCH net-next V3 4/6] skb_array: add wrappers for resizing

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Message-Id: <1467258779-3539-5-git-send-email-jasowang@redhat.com>
Date:	Thu, 30 Jun 2016 11:52:57 +0800
From:	Jason Wang <jasowang@...hat.com>
To:	mst@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, davem@...emloft.net
Cc:	kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	eric.dumazet@...il.com, brouer@...hat.com,
	Jason Wang <jasowang@...hat.com>
Subject: [PATCH net-next V3 4/6] skb_array: add wrappers for resizing

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Signed-off-by: Jason Wang <jasowang@...hat.com>
---
 include/linux/skb_array.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/skb_array.h b/include/linux/skb_array.h
index 2dd0d1e..f4dfade 100644
--- a/include/linux/skb_array.h
+++ b/include/linux/skb_array.h
@@ -161,6 +161,15 @@ static inline int skb_array_resize(struct skb_array *a, int size, gfp_t gfp)
 	return ptr_ring_resize(&a->ring, size, gfp, __skb_array_destroy_skb);
 }
 
+static inline int skb_array_resize_multiple(struct skb_array **rings,
+					    int nrings, int size, gfp_t gfp)
+{
+	BUILD_BUG_ON(offsetof(struct skb_array, ring));
+	return ptr_ring_resize_multiple((struct ptr_ring **)rings,
+					nrings, size, gfp,
+					__skb_array_destroy_skb);
+}
+
 static inline void skb_array_cleanup(struct skb_array *a)
 {
 	ptr_ring_cleanup(&a->ring, __skb_array_destroy_skb);
-- 
2.7.4