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Groups > linux.kernel > #1612661

[PATCH V2 net-next 4/7] tap: export skb_array

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This patch exports skb_array through tap_get_skb_array(). Caller can
then manipulate skb array directly.

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/net/tap.c      | 13 +++++++++++++
 include/linux/if_tap.h |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 4d4173d..abdaf86 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -1193,6 +1193,19 @@ struct socket *tap_get_socket(struct file *file)
 }
 EXPORT_SYMBOL_GPL(tap_get_socket);
 
+struct skb_array *tap_get_skb_array(struct file *file)
+{
+	struct tap_queue *q;
+
+	if (file->f_op != &tap_fops)
+		return ERR_PTR(-EINVAL);
+	q = file->private_data;
+	if (!q)
+		return ERR_PTR(-EBADFD);
+	return &q->skb_array;
+}
+EXPORT_SYMBOL_GPL(tap_get_skb_array);
+
 int tap_queue_resize(struct tap_dev *tap)
 {
 	struct net_device *dev = tap->dev;
diff --git a/include/linux/if_tap.h b/include/linux/if_tap.h
index 3482c3c..4837157 100644
--- a/include/linux/if_tap.h
+++ b/include/linux/if_tap.h
@@ -3,6 +3,7 @@
 
 #if IS_ENABLED(CONFIG_TAP)
 struct socket *tap_get_socket(struct file *);
+struct skb_array *tap_get_skb_array(struct file *file);
 #else
 #include <linux/err.h>
 #include <linux/errno.h>
@@ -12,6 +13,10 @@ static inline struct socket *tap_get_socket(struct file *f)
 {
 	return ERR_PTR(-EINVAL);
 }
+static inline struct skb_array *tap_get_skb_array(struct file *f)
+{
+	return ERR_PTR(-EINVAL);
+}
 #endif /* CONFIG_TAP */
 
 #include <net/sock.h>
-- 
2.7.4

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[PATCH V2 net-next 0/7] vhost-net rx batching Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
  [PATCH V2 net-next 6/7] tap: support receiving skb from msg_control Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
    Re: [PATCH V2 net-next 6/7] tap: support receiving skb from  msg_control "Michael S. Tsirkin" <mst@redhat.com> - 2017-03-30 17:10 +0200
      Re: [PATCH V2 net-next 6/7] tap: support receiving skb from  msg_control Jason Wang <jasowang@redhat.com> - 2017-03-31 06:10 +0200
  [PATCH V2 net-next 1/7] ptr_ring: introduce batch dequeuing Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
    Re: [PATCH V2 net-next 1/7] ptr_ring: introduce batch dequeuing "Michael S. Tsirkin" <mst@redhat.com> - 2017-03-30 16:00 +0200
      Re: [PATCH V2 net-next 1/7] ptr_ring: introduce batch dequeuing Jason Wang <jasowang@redhat.com> - 2017-03-31 06:00 +0200
        Re: [PATCH V2 net-next 1/7] ptr_ring: introduce batch dequeuing "Michael S. Tsirkin" <mst@redhat.com> - 2017-03-31 16:40 +0200
          Re: [PATCH V2 net-next 1/7] ptr_ring: introduce batch dequeuing Jason Wang <jasowang@redhat.com> - 2017-04-01 07:20 +0200
  [PATCH V2 net-next 4/7] tap: export skb_array Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
  [PATCH V2 net-next 3/7] tun: export skb_array Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
  [PATCH V2 net-next 2/7] skb_array: introduce batch dequeuing Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
  [PATCH V2 net-next 7/7] vhost_net: try batch dequing from skb array Jason Wang <jasowang@redhat.com> - 2017-03-30 09:30 +0200
    Re: [PATCH V2 net-next 7/7] vhost_net: try batch dequing from skb  array "Michael S. Tsirkin" <mst@redhat.com> - 2017-03-30 16:30 +0200
      Re: [PATCH V2 net-next 7/7] vhost_net: try batch dequing from skb  array Jason Wang <jasowang@redhat.com> - 2017-03-31 06:10 +0200
        Re: [PATCH V2 net-next 7/7] vhost_net: try batch dequing from skb  array Jason Wang <jasowang@redhat.com> - 2017-03-31 08:50 +0200

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