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/local_mbuf.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/local_mbuf.h')
-rw-r--r-- | VNFs/DPPD-PROX/local_mbuf.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/local_mbuf.h b/VNFs/DPPD-PROX/local_mbuf.h new file mode 100644 index 00000000..c65086cc --- /dev/null +++ b/VNFs/DPPD-PROX/local_mbuf.h @@ -0,0 +1,62 @@ +/* +// 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 _LOCAL_MBUF_H_ +#define _LOCAL_MBUF_H_ +#define LOCAL_MBUF_COUNT 64 + +struct local_mbuf { + struct rte_mempool *mempool; + uint32_t n_new_pkts; + struct rte_mbuf *new_pkts[LOCAL_MBUF_COUNT]; +}; + +static struct rte_mbuf **local_mbuf_take(struct local_mbuf *local_mbuf, uint32_t count) +{ + PROX_ASSERT(local_mbuf->n_new_pkts >= count); + + const uint32_t start_pos = local_mbuf->n_new_pkts - count; + struct rte_mbuf **ret = &local_mbuf->new_pkts[start_pos]; + + local_mbuf->n_new_pkts -= count; + return ret; +} + +static int local_mbuf_refill(struct local_mbuf *local_mbuf) +{ + const uint32_t fill = LOCAL_MBUF_COUNT - local_mbuf->n_new_pkts; + struct rte_mbuf **fill_mbuf = &local_mbuf->new_pkts[local_mbuf->n_new_pkts]; + + if (rte_mempool_get_bulk(local_mbuf->mempool, (void **)fill_mbuf, fill) < 0) + return -1; + local_mbuf->n_new_pkts += fill; + return 0; +} + +/* Ensures that count or more mbufs are available. Returns pointer to + count allocated mbufs or NULL if not enough mbufs are available. */ +static struct rte_mbuf **local_mbuf_refill_and_take(struct local_mbuf *local_mbuf, uint32_t count) +{ + PROX_ASSERT(count <= LOCAL_MBUF_COUNT); + if (local_mbuf->n_new_pkts >= count) + return local_mbuf_take(local_mbuf, count); + + if (local_mbuf_refill(local_mbuf) == 0) + return local_mbuf_take(local_mbuf, count); + return NULL; +} + +#endif /* _LOCAL_MBUF_H_ */ |