All of lore.kernel.org
 help / color / mirror / Atom feed
From: Pavel Begunkov <asml.silence@gmail.com>
To: netdev@vger.kernel.org
Cc: "David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
	Wei Liu <wei.liu@kernel.org>, Paul Durrant <paul@xen.org>,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	Pavel Begunkov <asml.silence@gmail.com>
Subject: [PATCH net-next 1/4] net: introduce struct ubuf_info_msgzc
Date: Fri, 23 Sep 2022 17:39:01 +0100	[thread overview]
Message-ID: <641bb6844e67e639a9403b8eab96c3fa34659e2a.1663892211.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1663892211.git.asml.silence@gmail.com>

We're going to split struct ubuf_info and leave there only
mandatory fields. Users are free to extend it. Add struct
ubuf_info_msgzc, which will be an extended version for MSG_ZEROCOPY and
some other users. It duplicates of struct ubuf_info for now and will be
removed in a couple of patches.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 include/linux/skbuff.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f15d5b62539b..fd7dcb977fdf 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -554,7 +554,28 @@ struct ubuf_info {
 	} mmp;
 };
 
+struct ubuf_info_msgzc {
+	struct ubuf_info ubuf;
+
+	union {
+		struct {
+			unsigned long desc;
+			void *ctx;
+		};
+		struct {
+			u32 id;
+			u16 len;
+			u16 zerocopy:1;
+			u32 bytelen;
+		};
+	};
+
+	struct mmpin mmp;
+};
+
 #define skb_uarg(SKB)	((struct ubuf_info *)(skb_shinfo(SKB)->destructor_arg))
+#define uarg_to_msgzc(ubuf_ptr)	container_of((ubuf_ptr), struct ubuf_info_msgzc, \
+					     ubuf)
 
 int mm_account_pinned_pages(struct mmpin *mmp, size_t size);
 void mm_unaccount_pinned_pages(struct mmpin *mmp);
-- 
2.37.2


  reply	other threads:[~2022-09-23 16:40 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-23 16:39 [PATCH net-next 0/4] shrink struct ubuf_info Pavel Begunkov
2022-09-23 16:39 ` Pavel Begunkov [this message]
2022-09-23 16:39 ` [PATCH net-next 2/4] xen/netback: use struct ubuf_info_msgzc Pavel Begunkov
2022-09-23 16:39 ` [PATCH net-next 3/4] vhost/net: " Pavel Begunkov
2022-09-23 16:39 ` [PATCH net-next 4/4] net: shrink struct ubuf_info Pavel Begunkov
2022-09-27 13:49 ` [PATCH net-next 0/4] " Paolo Abeni
2022-09-27 13:49   ` Paolo Abeni
2022-09-27 14:28   ` Pavel Begunkov
2022-09-27 17:16     ` Pavel Begunkov
2022-09-27 17:56       ` Paolo Abeni
2022-09-27 17:56         ` Paolo Abeni
2022-09-27 18:48         ` Pavel Begunkov
2022-09-27 19:59           ` Paolo Abeni
2022-09-27 19:59             ` Paolo Abeni
2022-09-27 20:17             ` Pavel Begunkov
2022-09-27 20:23               ` Paolo Abeni
2022-09-27 20:23                 ` Paolo Abeni
2022-09-27 21:02                 ` Pavel Begunkov
2022-09-29  2:20 ` patchwork-bot+netdevbpf

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=641bb6844e67e639a9403b8eab96c3fa34659e2a.1663892211.git.asml.silence@gmail.com \
    --to=asml.silence@gmail.com \
    --cc=davem@davemloft.net \
    --cc=jasowang@redhat.com \
    --cc=kuba@kernel.org \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mst@redhat.com \
    --cc=netdev@vger.kernel.org \
    --cc=paul@xen.org \
    --cc=virtualization@lists.linux-foundation.org \
    --cc=wei.liu@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.