mirror of
https://github.com/openvswitch/ovs
synced 2025-10-13 14:07:02 +00:00
65f13b50c5
With this commit, ovs by default will create one pmd thread for each numa node and pin the pmd thread to available cpu core on the numa node. NON_PMD_CORE_ID (currently 0) is used to reserve a particular cpu core for the I/O of all non-pmd threads. No pmd thread can be pinned to this reserved core. As side-effects of this commit: - pmd thread will not be created, if there is no dpdk interface from the corresponding numa node added to ovs. - the exact-match cache for non-pmd threads is removed from 'struct dp_netdev'. Instead, all non-pmd threads will use the exact-match cache defined in the 'struct dp_netdev_pmd_thread' for NON_PMD_CORE_ID. - the rx packet processing functions are refactored to use 'struct dp_netdev_pmd_thread' as input. - the 'netdev_send()' function will be called with the proper queue id. - both pmd and non-pmd threads can call the dpif_netdev_execute(). so, use a per-thread key to help recognize the calling thread. Signed-off-by: Alex Wang <alexw@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef DPIF_NETDEV_H
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#define DPIF_NETDEV_H 1
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "dpif.h"
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#include "openvswitch/types.h"
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#include "ofpbuf.h"
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#include "packets.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP
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* headers to be aligned on a 4-byte boundary. */
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enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN };
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static inline void dp_packet_pad(struct ofpbuf *b)
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{
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if (ofpbuf_size(b) < ETH_TOTAL_MIN) {
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ofpbuf_put_zeros(b, ETH_TOTAL_MIN - ofpbuf_size(b));
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}
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}
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#define NR_QUEUE 1
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#define NR_PMD_THREADS 1
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#define NON_PMD_CORE_ID 0
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#ifdef __cplusplus
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}
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#endif
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#endif /* netdev.h */
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