f10d322eff
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Acked-by: Gage Eads <gage.eads@intel.com>
150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
/*
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* BSD LICENSE
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*
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* Copyright (C) Cavium networks Ltd. 2017.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Cavium networks nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "ssovf_worker.h"
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static force_inline void
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ssows_new_event(struct ssows *ws, const struct rte_event *ev)
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{
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const uint64_t event_ptr = ev->u64;
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const uint32_t tag = (uint32_t)ev->event;
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const uint8_t new_tt = ev->sched_type;
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const uint8_t grp = ev->queue_id;
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ssows_add_work(ws, event_ptr, tag, new_tt, grp);
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}
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static force_inline void
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ssows_fwd_swtag(struct ssows *ws, const struct rte_event *ev, const uint8_t grp)
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{
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const uint8_t cur_tt = ws->cur_tt;
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const uint8_t new_tt = ev->sched_type;
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const uint32_t tag = (uint32_t)ev->event;
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/*
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* cur_tt/new_tt SSO_SYNC_ORDERED SSO_SYNC_ATOMIC SSO_SYNC_UNTAGGED
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*
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* SSO_SYNC_ORDERED norm norm untag
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* SSO_SYNC_ATOMIC norm norm untag
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* SSO_SYNC_UNTAGGED full full NOOP
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*/
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if (unlikely(cur_tt == SSO_SYNC_UNTAGGED)) {
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if (new_tt != SSO_SYNC_UNTAGGED) {
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ssows_swtag_full(ws, ev->u64, tag,
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new_tt, grp);
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}
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} else {
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if (likely(new_tt != SSO_SYNC_UNTAGGED))
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ssows_swtag_norm(ws, tag, new_tt);
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else
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ssows_swtag_untag(ws);
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}
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ws->swtag_req = 1;
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}
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#define OCT_EVENT_TYPE_GRP_FWD (RTE_EVENT_TYPE_MAX - 1)
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static force_inline void
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ssows_fwd_group(struct ssows *ws, const struct rte_event *ev, const uint8_t grp)
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{
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const uint64_t event_ptr = ev->u64;
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const uint32_t tag = (uint32_t)ev->event;
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const uint8_t cur_tt = ws->cur_tt;
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const uint8_t new_tt = ev->sched_type;
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if (cur_tt == SSO_SYNC_ORDERED) {
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/* Create unique tag based on custom event type and new grp */
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uint32_t newtag = OCT_EVENT_TYPE_GRP_FWD << 28;
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newtag |= grp << 20;
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newtag |= tag;
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ssows_swtag_norm(ws, newtag, SSO_SYNC_ATOMIC);
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rte_smp_wmb();
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ssows_swtag_wait(ws);
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} else {
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rte_smp_wmb();
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}
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ssows_add_work(ws, event_ptr, tag, new_tt, grp);
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}
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static force_inline void
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ssows_forward_event(struct ssows *ws, const struct rte_event *ev)
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{
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const uint8_t grp = ev->queue_id;
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/* Group hasn't changed, Use SWTAG to forward the event */
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if (ws->cur_grp == grp)
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ssows_fwd_swtag(ws, ev, grp);
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else
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/*
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* Group has been changed for group based work pipelining,
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* Use deschedule/add_work operation to transfer the event to
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* new group/core
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*/
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ssows_fwd_group(ws, ev, grp);
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}
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static force_inline void
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ssows_release_event(struct ssows *ws)
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{
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if (likely(ws->cur_tt != SSO_SYNC_UNTAGGED))
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ssows_swtag_untag(ws);
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}
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force_inline uint16_t __hot
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ssows_enq(void *port, const struct rte_event *ev)
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{
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struct ssows *ws = port;
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uint16_t ret = 1;
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switch (ev->op) {
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case RTE_EVENT_OP_NEW:
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ssows_new_event(ws, ev);
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break;
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case RTE_EVENT_OP_FORWARD:
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ssows_forward_event(ws, ev);
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break;
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case RTE_EVENT_OP_RELEASE:
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ssows_release_event(ws);
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break;
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default:
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ret = 0;
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}
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return ret;
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}
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uint16_t __hot
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ssows_enq_burst(void *port, const struct rte_event ev[], uint16_t nb_events)
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{
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RTE_SET_USED(nb_events);
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return ssows_enq(port, ev);
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}
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