From 49f96fd0cb3808e5ff96573f28b3dceb16eb6998 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Wed, 17 May 2017 12:14:42 +0800 Subject: [PATCH] tap: export skb_array This patch exports skb_array through tap_get_skb_array(). Caller can then manipulate skb array directly. Signed-off-by: Jason Wang Signed-off-by: David S. Miller --- 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 #include @@ -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 -- 2.7.4