linux-kernel - [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