netdev - [RFC Optimizing veth xsk performance 07/10] sk_buff: add destructor_arg_xsk

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Message-Id: <20230803140441.53596-8-huangjie.albert@bytedance.com>
Date: Thu,  3 Aug 2023 22:04:33 +0800
From: "huangjie.albert" <huangjie.albert@...edance.com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: "huangjie.albert" <huangjie.albert@...edance.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Jesper Dangaard Brouer <hawk@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	Björn Töpel <bjorn@...nel.org>,
	Magnus Karlsson <magnus.karlsson@...el.com>,
	Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
	Jonathan Lemon <jonathan.lemon@...il.com>,
	Pavel Begunkov <asml.silence@...il.com>,
	Shmulik Ladkani <shmulik.ladkani@...il.com>,
	Kees Cook <keescook@...omium.org>,
	Richard Gobert <richardbgobert@...il.com>,
	Yunsheng Lin <linyunsheng@...wei.com>,
	netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
	linux-kernel@...r.kernel.org (open list),
	bpf@...r.kernel.org (open list:XDP (eXpress Data Path))
Subject: [RFC Optimizing veth xsk performance 07/10] sk_buff: add destructor_arg_xsk_pool for zero copy

this member is add for dummy dev to suppot zero copy

Signed-off-by: huangjie.albert <huangjie.albert@...edance.com>
---
 include/linux/skbuff.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 16a49ba534e4..fa9577d233a4 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -592,6 +592,7 @@ struct skb_shared_info {
 	/* Intermediate layers must ensure that destructor_arg
 	 * remains valid until skb destructor */
 	void *		destructor_arg;
+	void *		destructor_arg_xsk_pool; /*  just for dummy device xsk zero copy */
 
 	/* must be last field, see pskb_expand_head() */
 	skb_frag_t	frags[MAX_SKB_FRAGS];
-- 
2.20.1