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authorPavel Begunkov <asml.silence@gmail.com>2022-07-12 23:52:28 +0300
committerJakub Kicinski <kuba@kernel.org>2022-07-19 05:58:45 +0300
commit2e07a521e1e424787af3bfc59615de4220856c35 (patch)
tree5444a5c42b38fff579bc9ef95a8bb9b244fe77da /include
parent1b4b2b09d4fb451029b112f17d34792e0277aeb2 (diff)
downloadlinux-2e07a521e1e424787af3bfc59615de4220856c35.tar.xz
skbuff: add SKBFL_DONT_ORPHAN flag
We don't want to list every single ubuf_info callback in skb_orphan_frags(), add a flag controlling the behaviour. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/skbuff.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d3d10556f0fa..8e12b3b9ad6c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -686,10 +686,13 @@ enum {
* charged to the kernel memory.
*/
SKBFL_PURE_ZEROCOPY = BIT(2),
+
+ SKBFL_DONT_ORPHAN = BIT(3),
};
#define SKBFL_ZEROCOPY_FRAG (SKBFL_ZEROCOPY_ENABLE | SKBFL_SHARED_FRAG)
-#define SKBFL_ALL_ZEROCOPY (SKBFL_ZEROCOPY_FRAG | SKBFL_PURE_ZEROCOPY)
+#define SKBFL_ALL_ZEROCOPY (SKBFL_ZEROCOPY_FRAG | SKBFL_PURE_ZEROCOPY | \
+ SKBFL_DONT_ORPHAN)
/*
* The callback notifies userspace to release buffers when skb DMA is done in
@@ -3182,8 +3185,7 @@ static inline int skb_orphan_frags(struct sk_buff *skb, gfp_t gfp_mask)
{
if (likely(!skb_zcopy(skb)))
return 0;
- if (!skb_zcopy_is_nouarg(skb) &&
- skb_uarg(skb)->callback == msg_zerocopy_callback)
+ if (skb_shinfo(skb)->flags & SKBFL_DONT_ORPHAN)
return 0;
return skb_copy_ubufs(skb, gfp_mask);
}