From: Pavel Begunkov <[email protected]>
To: [email protected], [email protected]
Cc: Jens Axboe <[email protected]>,
"David S . Miller" <[email protected]>,
Jakub Kicinski <[email protected]>,
[email protected], [email protected],
[email protected], Wei Liu <[email protected]>,
Paul Durrant <[email protected]>,
[email protected], [email protected],
"Michael S . Tsirkin" <[email protected]>,
Jason Wang <[email protected]>,
Pavel Begunkov <[email protected]>
Subject: [RFC net-next io_uring 06/11] net: add flags for controlling ubuf_info
Date: Wed, 10 Aug 2022 16:49:14 +0100 [thread overview]
Message-ID: <433971d77b5a757b11ce5683ef1d0377efcc8544.1660124059.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
There are already skb_flags in ubuf_info, which enhancing skbs. Also add
flags controlling ubuf_info, mainly to hint about various referencing
aspects of it, which will be introduced in later patches.
Signed-off-by: Pavel Begunkov <[email protected]>
---
include/linux/skbuff.h | 1 +
io_uring/notif.c | 1 +
net/core/skbuff.c | 1 +
3 files changed, 3 insertions(+)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e749b5d3868d..2b2e0020030b 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -535,6 +535,7 @@ struct ubuf_info {
bool zerocopy_success);
refcount_t refcnt;
u8 skb_flags;
+ u8 flags;
};
struct ubuf_info_msgzc {
diff --git a/io_uring/notif.c b/io_uring/notif.c
index 97cb4a7e8849..a2ba1e35a59f 100644
--- a/io_uring/notif.c
+++ b/io_uring/notif.c
@@ -66,6 +66,7 @@ struct io_kiocb *io_alloc_notif(struct io_ring_ctx *ctx,
nd = io_notif_to_data(notif);
nd->account_pages = 0;
nd->uarg.skb_flags = SKBFL_ZEROCOPY_FRAG | SKBFL_DONT_ORPHAN;
+ nd->uarg.flags = 0;
nd->uarg.callback = io_uring_tx_zerocopy_callback;
/* master ref owned by io_notif_slot, will be dropped on flush */
refcount_set(&nd->uarg.refcnt, 1);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 40bb84986800..7e102373482c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1207,6 +1207,7 @@ static struct ubuf_info *msg_zerocopy_alloc(struct sock *sk, size_t size)
uarg->bytelen = size;
uarg->zerocopy = 1;
uarg->ubuf.skb_flags = SKBFL_ZEROCOPY_FRAG | SKBFL_DONT_ORPHAN;
+ uarg->ubuf.flags = 0;
refcount_set(&uarg->ubuf.refcnt, 1);
sock_hold(sk);
--
2.37.0
next prev parent reply other threads:[~2022-08-10 15:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 15:49 [RFC net-next io_uring 00/11] improve io_uring's ubuf_info refcounting Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 01/11] net: introduce struct ubuf_info_msgzc Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 02/11] xen/netback: use " Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 03/11] vhost/net: " Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 04/11] net: shrink struct ubuf_info Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 05/11] net: rename ubuf_info's flags Pavel Begunkov
2022-08-10 15:49 ` Pavel Begunkov [this message]
2022-08-10 15:49 ` [RFC net-next io_uring 07/11] net/tcp: optimise tcp ubuf refcounting Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 08/11] net: let callers provide ->msg_ubuf refs Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 09/11] io_uring/notif: add helper for flushing refs Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 10/11] io_uring/notif: mark notifs with UARGFL_CALLER_PINNED Pavel Begunkov
2022-08-10 15:49 ` [RFC net-next io_uring 11/11] io_uring/notif: add ubuf_info ref caching Pavel Begunkov
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