From: Jason Wang <jasowang@redhat.com>
To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com
Cc: Jason Wang <jasowang@redhat.com>
Subject: [PATCH net-next V3 5/9] tun: export skb_array
Date: Wed, 10 May 2017 10:37:57 +0800 [thread overview]
Message-ID: <1494383881-6811-6-git-send-email-jasowang@redhat.com> (raw)
In-Reply-To: <1494383881-6811-1-git-send-email-jasowang@redhat.com>
This patch exports skb_array through tun_get_skb_array(). Caller can
then manipulate skb array directly.
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/net/tun.c | 13 +++++++++++++
include/linux/if_tun.h | 5 +++++
2 files changed, 18 insertions(+)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index bbd707b..3cbfc5c 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2626,6 +2626,19 @@ struct socket *tun_get_socket(struct file *file)
}
EXPORT_SYMBOL_GPL(tun_get_socket);
+struct skb_array *tun_get_skb_array(struct file *file)
+{
+ struct tun_file *tfile;
+
+ if (file->f_op != &tun_fops)
+ return ERR_PTR(-EINVAL);
+ tfile = file->private_data;
+ if (!tfile)
+ return ERR_PTR(-EBADFD);
+ return &tfile->tx_array;
+}
+EXPORT_SYMBOL_GPL(tun_get_skb_array);
+
module_init(tun_init);
module_exit(tun_cleanup);
MODULE_DESCRIPTION(DRV_DESCRIPTION);
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
index ed6da2e..bf9bdf4 100644
--- a/include/linux/if_tun.h
+++ b/include/linux/if_tun.h
@@ -19,6 +19,7 @@
#if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
struct socket *tun_get_socket(struct file *);
+struct skb_array *tun_get_skb_array(struct file *file);
#else
#include <linux/err.h>
#include <linux/errno.h>
@@ -28,5 +29,9 @@ static inline struct socket *tun_get_socket(struct file *f)
{
return ERR_PTR(-EINVAL);
}
+static inline struct skb_array *tun_get_skb_array(struct file *f)
+{
+ return ERR_PTR(-EINVAL);
+}
#endif /* CONFIG_TUN */
#endif /* __IF_TUN_H */
--
2.7.4
next prev parent reply other threads:[~2017-05-10 2:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-10 2:37 [PATCH net-next V3 0/9] vhost_net rx batch dequeuing Jason Wang
2017-05-10 2:37 ` [PATCH net-next V3 1/9] ptr_ring: add ptr_ring_unconsume Jason Wang
2017-05-10 2:37 ` [PATCH net-next V3 2/9] skb_array: introduce skb_array_unconsume Jason Wang
2017-05-10 2:37 ` [PATCH net-next V3 3/9] ptr_ring: introduce batch dequeuing Jason Wang
2017-05-10 2:37 ` [PATCH net-next V3 4/9] skb_array: " Jason Wang
2017-05-10 2:37 ` Jason Wang [this message]
2017-05-10 2:37 ` [PATCH net-next V3 6/9] tap: export skb_array Jason Wang
2017-05-10 2:37 ` [PATCH net-next V3 7/9] tun: support receiving skb through msg_control Jason Wang
2017-05-10 2:38 ` [PATCH net-next V3 8/9] tap: support receiving skb from msg_control Jason Wang
2017-05-10 2:38 ` [PATCH net-next V3 9/9] vhost_net: try batch dequing from skb array Jason Wang
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