[RFC PATCH 11/21] skbuff: add a zc_netgpu bitflag
From: Jonathan Lemon <hidden>
Date: 2020-06-18 16:10:20
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This could likely be moved elsewhere. The presence of the flag on the skb indicates that one of the fragments may contain zerocopy data (where the data is not accessible to the cpu). Signed-off-by: Jonathan Lemon <redacted> --- include/linux/skbuff.h | 3 ++- net/core/skbuff.c | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 0c0377fc00c2..ba41d1a383f8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h@@ -782,7 +782,8 @@ struct sk_buff { fclone:2, peeked:1, head_frag:1, - pfmemalloc:1; + pfmemalloc:1, + zc_netgpu:1; #ifdef CONFIG_SKB_EXTENSIONS __u8 active_extensions; #endif
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b8afefe6f6b6..2a391042be53 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c@@ -992,6 +992,7 @@ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb) n->cloned = 1; n->nohdr = 0; n->peeked = 0; + C(zc_netgpu); C(pfmemalloc); n->destructor = NULL; C(tail);
--
2.24.1