diff options
| author |   Deepak S <deepak.s@linux.intel.com> | 2017-07-13 21:26:50 -0700 |
|---|---|---|
| committer | Deepak S <deepak.s@linux.intel.com> | 2017-07-14 04:58:47 -0700 |
| commit | 7286b2518ec8e4398b512ce95def9166a7af2e4a (patch) | |
| tree | c93ef65d9e73e8893ccecb720152e16aae96a8b6 /VNFs/DPPD-PROX/prefetch.h | |
| parent | adcb79da90176b27224eeb1d00aa0e611ef85a9b (diff) | |
Adding PROX(Packet pROcessing eXecution engine) VNF to sampleVNF
JIRA: SAMPLEVNF-55
PROX is a DPDK-based application implementing Telco use-cases such as
a simplified BRAS/BNG, light-weight AFTR... It also allows configuring
finer grained network functions like QoS, Routing, load-balancing...
(We are moving PROX version v039 to sampleVNF
https://01.org/intel-data-plane-performance-demonstrators/prox-overview)
Change-Id: Ia3cb02cf0e49ac5596e922c197ff7e010293d033
Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Diffstat (limited to 'VNFs/DPPD-PROX/prefetch.h')
| -rw-r--r-- | VNFs/DPPD-PROX/prefetch.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/prefetch.h b/VNFs/DPPD-PROX/prefetch.h new file mode 100644 index 00000000..a42afe4a --- /dev/null +++ b/VNFs/DPPD-PROX/prefetch.h @@ -0,0 +1,63 @@ +/* +// Copyright (c) 2010-2017 Intel Corporation +// +// 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 _PREFETCH_H_ +#define _PREFETCH_H_ + +#include <rte_mbuf.h> + +static inline void prefetch_nta(volatile void *p) +{ + asm volatile ("prefetchnta %[p]" : [p] "+m" (*(volatile char *)p)); +} + +#ifdef PROX_PREFETCH_OFFSET +#define PREFETCH0(p) rte_prefetch0(p) +#define PREFETCH_OFFSET PROX_PREFETCH_OFFSET +#else +#define PREFETCH0(p) do {} while (0) +#define PREFETCH_OFFSET 0 +#endif + +static inline void prefetch_pkts(__attribute__((unused)) struct rte_mbuf **mbufs, __attribute__((unused)) uint16_t n_pkts) +{ +#ifdef PROX_PREFETCH_OFFSET + for (uint16_t j = 0; j < PROX_PREFETCH_OFFSET && j < n_pkts; ++j) { + PREFETCH0(mbufs[j]); + } + for (uint16_t j = PROX_PREFETCH_OFFSET; j < n_pkts; ++j) { + PREFETCH0(mbufs[j]); + PREFETCH0(rte_pktmbuf_mtod(mbufs[j - PROX_PREFETCH_OFFSET], void*)); + } + for (uint16_t j = n_pkts - PROX_PREFETCH_OFFSET; j < n_pkts; ++j) { + PREFETCH0(rte_pktmbuf_mtod(mbufs[j], void*)); + } +#endif +} + +static inline void prefetch_first(__attribute__((unused)) struct rte_mbuf **mbufs, __attribute__((unused)) uint16_t n_pkts) +{ +#ifdef PROX_PREFETCH_OFFSET + for (uint16_t j = 0; j < PROX_PREFETCH_OFFSET && j < n_pkts; ++j) { + PREFETCH0(mbufs[j]); + } + for (uint16_t j = 1; j < PROX_PREFETCH_OFFSET && j < n_pkts; ++j) { + PREFETCH0(rte_pktmbuf_mtod(mbufs[j - 1], void *)); + } +#endif +} + +#endif /* _PREFETCH_H_ */ |