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| author | David Howells <dhowells@redhat.com> | 2024-01-29 23:47:57 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2024-03-05 23:31:43 +0000 |
| commit | 49489bb03a501547450e8fdc6d85d023d8a3b2c4 (patch) | |
| tree | 072eb93c5f650cd6e2bf76652359b6c77f5c335f /net/rxrpc/insecure.c | |
| parent | 8985f2b09b3303b935b9ab4814d801251f0c7c22 (diff) | |
| download | lwn-49489bb03a501547450e8fdc6d85d023d8a3b2c4.tar.gz lwn-49489bb03a501547450e8fdc6d85d023d8a3b2c4.zip | |
rxrpc: Do zerocopy using MSG_SPLICE_PAGES and page frags
Switch from keeping the transmission buffers in the rxrpc_txbuf struct and
allocated from the slab, to allocating them using page fragment allocators
(which uses raw pages), thereby allowing them to be passed to
MSG_SPLICE_PAGES and avoid copying into the UDP buffers.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.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: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Diffstat (limited to 'net/rxrpc/insecure.c')
| -rw-r--r-- | net/rxrpc/insecure.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/net/rxrpc/insecure.c b/net/rxrpc/insecure.c index 34353b6e584b..f2701068ed9e 100644 --- a/net/rxrpc/insecure.c +++ b/net/rxrpc/insecure.c @@ -15,14 +15,11 @@ static int none_init_connection_security(struct rxrpc_connection *conn, } /* - * Work out how much data we can put in an unsecured packet. + * Allocate an appropriately sized buffer for the amount of data remaining. */ -static int none_how_much_data(struct rxrpc_call *call, size_t remain, - size_t *_buf_size, size_t *_data_size, size_t *_offset) +static struct rxrpc_txbuf *none_alloc_txbuf(struct rxrpc_call *call, size_t remain, gfp_t gfp) { - *_buf_size = *_data_size = min_t(size_t, remain, RXRPC_JUMBO_DATALEN); - *_offset = 0; - return 0; + return rxrpc_alloc_data_txbuf(call, min_t(size_t, remain, RXRPC_JUMBO_DATALEN), 0, gfp); } static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb) @@ -79,7 +76,7 @@ const struct rxrpc_security rxrpc_no_security = { .exit = none_exit, .init_connection_security = none_init_connection_security, .free_call_crypto = none_free_call_crypto, - .how_much_data = none_how_much_data, + .alloc_txbuf = none_alloc_txbuf, .secure_packet = none_secure_packet, .verify_packet = none_verify_packet, .respond_to_challenge = none_respond_to_challenge, |