From: David Howells <dhowells@redhat.com>
To: netdev@vger.kernel.org
Cc: David Howells <dhowells@redhat.com>,
Ayush Sawal <ayush.sawal@chelsio.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>,
Simon Horman <simon.horman@corigine.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH net-next v2 1/2] chelsio: Support MSG_SPLICE_PAGES
Date: Wed, 31 May 2023 12:00:07 +0100 [thread overview]
Message-ID: <20230531110008.642903-2-dhowells@redhat.com> (raw)
In-Reply-To: <20230531110008.642903-1-dhowells@redhat.com>
Make Chelsio's TLS offload sendmsg() support MSG_SPLICE_PAGES, splicing in
pages from the source iterator if possible and copying the data in
otherwise.
This allows ->sendpage() to be replaced by something that can handle
multiple multipage folios in a single transaction.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ayush Sawal <ayush.sawal@chelsio.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: netdev@vger.kernel.org
---
.../ethernet/chelsio/inline_crypto/chtls/chtls_io.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
index ae6b17b96bf1..1d08386ac916 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
@@ -1092,7 +1092,17 @@ int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
if (copy > size)
copy = size;
- if (skb_tailroom(skb) > 0) {
+ if (msg->msg_flags & MSG_SPLICE_PAGES) {
+ err = skb_splice_from_iter(skb, &msg->msg_iter, copy,
+ sk->sk_allocation);
+ if (err < 0) {
+ if (err == -EMSGSIZE)
+ goto new_buf;
+ goto do_fault;
+ }
+ copy = err;
+ sk_wmem_queued_add(sk, copy);
+ } else if (skb_tailroom(skb) > 0) {
copy = min(copy, skb_tailroom(skb));
if (is_tls_tx(csk))
copy = min_t(int, copy, csk->tlshws.txleft);
next prev parent reply other threads:[~2023-05-31 11:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 11:00 [PATCH net-next v2 0/2] splice, net: Handle MSG_SPLICE_PAGES in Chelsio-TLS David Howells
2023-05-31 11:00 ` David Howells [this message]
2023-05-31 11:00 ` [PATCH net-next v2 2/2] chelsio: Convert chtls_sendpage() to use MSG_SPLICE_PAGES David Howells
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