mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 14:05:08 +07:00
e20cf8d3f1
This is the RX counterpart of commit bec1f6f697 ("udp: generate gso
with UDP_SEGMENT"). When UDP_GRO is enabled, such socket is also
eligible for GRO in the rx path: UDP segments directed to such socket
are assembled into a larger GSO_UDP_L4 packet.
The core UDP GRO support is enabled with setsockopt(UDP_GRO).
Initial benchmark numbers:
Before:
udp rx: 1079 MB/s 769065 calls/s
After:
udp rx: 1466 MB/s 24877 calls/s
This change introduces a side effect in respect to UDP tunnels:
after a UDP tunnel creation, now the kernel performs a lookup per ingress
UDP packet, while before such lookup happened only if the ingress packet
carried a valid internal header csum.
rfc v2 -> rfc v3:
- fixed typos in macro name and comments
- really enforce UDP_GRO_CNT_MAX, instead of UDP_GRO_CNT_MAX + 1
- acquire socket lock in UDP_GRO setsockopt
rfc v1 -> rfc v2:
- use a new option to enable UDP GRO
- use static keys to protect the UDP GRO socket lookup
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
|
|
/*
|
|
* INET An implementation of the TCP/IP protocol suite for the LINUX
|
|
* operating system. INET is implemented using the BSD Socket
|
|
* interface as the means of communication with the user level.
|
|
*
|
|
* Definitions for the UDP protocol.
|
|
*
|
|
* Version: @(#)udp.h 1.0.2 04/28/93
|
|
*
|
|
* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifndef _UAPI_LINUX_UDP_H
|
|
#define _UAPI_LINUX_UDP_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct udphdr {
|
|
__be16 source;
|
|
__be16 dest;
|
|
__be16 len;
|
|
__sum16 check;
|
|
};
|
|
|
|
/* UDP socket options */
|
|
#define UDP_CORK 1 /* Never send partially complete segments */
|
|
#define UDP_ENCAP 100 /* Set the socket to accept encapsulated packets */
|
|
#define UDP_NO_CHECK6_TX 101 /* Disable sending checksum for UDP6X */
|
|
#define UDP_NO_CHECK6_RX 102 /* Disable accpeting checksum for UDP6 */
|
|
#define UDP_SEGMENT 103 /* Set GSO segmentation size */
|
|
#define UDP_GRO 104 /* This socket can receive UDP GRO packets */
|
|
|
|
/* UDP encapsulation types */
|
|
#define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
|
|
#define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */
|
|
#define UDP_ENCAP_L2TPINUDP 3 /* rfc2661 */
|
|
#define UDP_ENCAP_GTP0 4 /* GSM TS 09.60 */
|
|
#define UDP_ENCAP_GTP1U 5 /* 3GPP TS 29.060 */
|
|
#define UDP_ENCAP_RXRPC 6
|
|
|
|
#endif /* _UAPI_LINUX_UDP_H */
|