mirror of
https://github.com/openvswitch/ovs
synced 2025-10-19 14:37:21 +00:00
6b31e07347
Typically, kernel datapath threads send upcalls to userspace where handler threads process the upcalls. For TAP and DPDK devices, the datapath threads operate in userspace, so there is no need for separate handler threads. This patch allows userspace datapath threads to directly call the ofproto upcall functions, eliminating the need for handler threads for datapaths of type 'netdev'. Signed-off-by: Ryan Wilson <wryan@nicira.com> Signed-off-by: Ethan Jackson <ethan@nicira.com> Acked-by: Ethan Jackson <ethan@nicira.com>
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
|
|
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef DPIF_NETDEV_H
|
|
#define DPIF_NETDEV_H 1
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include "dpif.h"
|
|
#include "openvswitch/types.h"
|
|
#include "ofpbuf.h"
|
|
#include "packets.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP
|
|
* headers to be aligned on a 4-byte boundary. */
|
|
enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN };
|
|
|
|
static inline void dp_packet_pad(struct ofpbuf *b)
|
|
{
|
|
if (ofpbuf_size(b) < ETH_TOTAL_MIN) {
|
|
ofpbuf_put_zeros(b, ETH_TOTAL_MIN - ofpbuf_size(b));
|
|
}
|
|
}
|
|
|
|
#define NR_QUEUE 1
|
|
#define NR_PMD_THREADS 1
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* netdev.h */
|