Am 22.10.22 um 18:07 schrieb Jens Axboe:
On 10/22/22 9:57 AM, Pavel Begunkov wrote:
On 10/21/22 17:14, Jakub Kicinski wrote:
On Fri, 21 Oct 2022 11:16:39 +0100 Pavel Begunkov wrote:
We need an efficient way in io_uring to check whether a socket supports
zerocopy with msghdr provided ubuf_info. Add a new flag into the struct
socket flags fields.
Cc: <stable@xxxxxxxxxxxxxxx> # 6.0
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
? include/linux/net.h | 1 +
? net/ipv4/tcp.c????? | 1 +
? net/ipv4/udp.c????? | 1 +
? 3 files changed, 3 insertions(+)
diff --git a/include/linux/net.h b/include/linux/net.h
index 711c3593c3b8..18d942bbdf6e 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -41,6 +41,7 @@ struct net;
? #define SOCK_NOSPACE??????? 2
? #define SOCK_PASSCRED??????? 3
? #define SOCK_PASSSEC??????? 4
+#define SOCK_SUPPORT_ZC??????? 5
Acked-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Any idea on when this will make it to Linus? If within a week we can
probably delay:
After a chat with Jens, IIUC he can take it and send out to
Linus early. So, sounds like a good plan
Yes, and let's retain the name for now, can always be changed if we need
to make it more granular. I'll ship this off before -rc2.
I'm now always getting -EOPNOTSUPP from SENDMSG_ZC for tcp connections...
metze
