[PATCH net-next 0/4] splice, net: Replace sendpage with sendmsg(MSG_SPLICE_PAGES), part 2

From: David Howells <dhowells@redhat.com>
To: netdev@vger.kernel.org
Cc: David Howells <dhowells@redhat.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
	David Ahern <dsahern@kernel.org>,
	Matthew Wilcox <willy@infradead.org>,
	Jens Axboe <axboe@kernel.dk>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH net-next 0/4] splice, net: Replace sendpage with sendmsg(MSG_SPLICE_PAGES), part 2
Date: Wed, 24 May 2023 15:49:19 +0100	[thread overview]
Message-ID: <20230524144923.3623536-1-dhowells@redhat.com> (raw)

Here's the second tranche of patches towards providing a MSG_SPLICE_PAGES
internal sendmsg flag that is intended to replace the ->sendpage() op with
calls to sendmsg().  MSG_SPLICE_PAGES is a hint that tells the protocol
that it should splice the pages supplied if it can and copy them if not.

This set consists of the following parts:

 (1) Implement MSG_SPLICE_PAGES support in Chelsio TLS and make
     chtls_sendpage() just a wrapper around sendmsg().

 (2) Implement MSG_SPLICE_PAGES support in AF_KCM and make kcm_sendpage()
     just a wrapper around sendmsg().

I've pushed the patches here also:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=sendpage-2

David

Link: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=51c78a4d532efe9543a4df019ff405f05c6157f6 # part 1

David Howells (4):
  chelsio: Support MSG_SPLICE_PAGES
  chelsio: Convert chtls_sendpage() to use MSG_SPLICE_PAGES
  kcm: Support MSG_SPLICE_PAGES
  kcm: Convert kcm_sendpage() to use MSG_SPLICE_PAGES

 .../chelsio/inline_crypto/chtls/chtls_io.c    | 121 ++--------
 net/kcm/kcmsock.c                             | 216 +++++-------------
 2 files changed, 74 insertions(+), 263 deletions(-)