diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.9/601-net-readd-skb_recycle.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.9/601-net-readd-skb_recycle.patch | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/target/linux/layerscape/patches-4.9/601-net-readd-skb_recycle.patch b/target/linux/layerscape/patches-4.9/601-net-readd-skb_recycle.patch deleted file mode 100644 index 08aa2a0944..0000000000 --- a/target/linux/layerscape/patches-4.9/601-net-readd-skb_recycle.patch +++ /dev/null @@ -1,66 +0,0 @@ -From 9527ee5eb436ad773acc7320b372a5f4825a920d Mon Sep 17 00:00:00 2001 -From: Madalin Bucur <madalin.bucur@freescale.com> -Date: Tue, 5 Jan 2016 12:12:07 +0200 -Subject: [PATCH] net: readd skb_recycle() - -Adding back skb_recycle() as it's used by the DPAA Ethernet driver. -This was removed from the upstream kernel because it was lacking users. - -Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> ---- - include/linux/skbuff.h | 1 + - net/core/skbuff.c | 26 ++++++++++++++++++++++++++ - 2 files changed, 27 insertions(+) - -diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h -index 32810f279f8e..a52a6fb0ac2e 100644 ---- a/include/linux/skbuff.h -+++ b/include/linux/skbuff.h -@@ -902,6 +902,7 @@ void kfree_skb(struct sk_buff *skb); - void kfree_skb_list(struct sk_buff *segs); - void skb_tx_error(struct sk_buff *skb); - void consume_skb(struct sk_buff *skb); -+void skb_recycle(struct sk_buff *skb); - void __kfree_skb(struct sk_buff *skb); - extern struct kmem_cache *skbuff_head_cache; - -diff --git a/net/core/skbuff.c b/net/core/skbuff.c -index fe008f1bd930..ab1038083df2 100644 ---- a/net/core/skbuff.c -+++ b/net/core/skbuff.c -@@ -825,6 +825,32 @@ void napi_consume_skb(struct sk_buff *skb, int budget) - } - EXPORT_SYMBOL(napi_consume_skb); - -+/** -+ * skb_recycle - clean up an skb for reuse -+ * @skb: buffer -+ * -+ * Recycles the skb to be reused as a receive buffer. This -+ * function does any necessary reference count dropping, and -+ * cleans up the skbuff as if it just came from __alloc_skb(). -+ */ -+void skb_recycle(struct sk_buff *skb) -+{ -+ struct skb_shared_info *shinfo; -+ u8 head_frag = skb->head_frag; -+ -+ skb_release_head_state(skb); -+ -+ shinfo = skb_shinfo(skb); -+ memset(shinfo, 0, offsetof(struct skb_shared_info, dataref)); -+ atomic_set(&shinfo->dataref, 1); -+ -+ memset(skb, 0, offsetof(struct sk_buff, tail)); -+ skb->data = skb->head + NET_SKB_PAD; -+ skb->head_frag = head_frag; -+ skb_reset_tail_pointer(skb); -+} -+EXPORT_SYMBOL(skb_recycle); -+ - /* Make sure a field is enclosed inside headers_start/headers_end section */ - #define CHECK_SKB_FIELD(field) \ - BUILD_BUG_ON(offsetof(struct sk_buff, field) < \ --- -2.11.1 - |