[dpdk-dev,v3] examples/ipsec-secgw: limit inflight packets count
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Commit Message
Revert previous patch that introduce a performance
degradation in certain scenarios and add a configurable
limit for number inflight packets.
Revert
commit 84d4b5e4ec48 ("examples/ipsec-secgw: improve IPsec dequeue logic")
Cc: stable@dpdk.org
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
---
v3: updated enqueue size trim computation
examples/ipsec-secgw/ipsec.c | 32 +++++++++++++++-----------------
examples/ipsec-secgw/ipsec.h | 1 +
2 files changed, 16 insertions(+), 17 deletions(-)
Comments
On 5/9/2018 2:28 PM, Radu Nicolau wrote:
> Revert previous patch that introduce a performance
> degradation in certain scenarios and add a configurable
> limit for number inflight packets.
>
> Revert
> commit 84d4b5e4ec48 ("examples/ipsec-secgw: improve IPsec dequeue logic")
> Cc: stable@dpdk.org
>
> Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
> ---
> v3: updated enqueue size trim computation
>
> examples/ipsec-secgw/ipsec.c | 32 +++++++++++++++-----------------
> examples/ipsec-secgw/ipsec.h | 1 +
> 2 files changed, 16 insertions(+), 17 deletions(-)
>
> diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
> index ee24973..1929752 100644
> --- a/examples/ipsec-secgw/ipsec.c
> +++ b/examples/ipsec-secgw/ipsec.c
> @@ -348,13 +348,19 @@ create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
> static inline void
> enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
> {
> - int32_t ret, i;
> + int32_t ret = 0, i;
>
> cqp->buf[cqp->len++] = cop;
>
> if (cqp->len == MAX_PKT_BURST) {
> - ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp,
> - cqp->buf, cqp->len);
> + int enq_size = cqp->len;
> + if ((cqp->in_flight + enq_size) >= MAX_INFLIGHT)
This should be ((cqp->in_flight + enq_size) > MAX_INFLIGHT). there Will
be one extra operation in case it is equal.
Otherwise,
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
> -----Original Message-----
> From: Akhil Goyal [mailto:akhil.goyal@nxp.com]
> Sent: Wednesday, May 9, 2018 1:02 PM
> To: Nicolau, Radu <radu.nicolau@intel.com>; dev@dpdk.org
> Cc: akhil.goyal@nxp.com; De Lara Guarch, Pablo
> <pablo.de.lara.guarch@intel.com>; stable@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3] examples/ipsec-secgw: limit inflight packets
> count
>
> On 5/9/2018 2:28 PM, Radu Nicolau wrote:
> > Revert previous patch that introduce a performance degradation in
> > certain scenarios and add a configurable limit for number inflight
> > packets.
> >
> > Revert
> > commit 84d4b5e4ec48 ("examples/ipsec-secgw: improve IPsec dequeue
> > logic")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
> > ---
> > v3: updated enqueue size trim computation
> >
> > examples/ipsec-secgw/ipsec.c | 32 +++++++++++++++-----------------
> > examples/ipsec-secgw/ipsec.h | 1 +
> > 2 files changed, 16 insertions(+), 17 deletions(-)
> >
> > diff --git a/examples/ipsec-secgw/ipsec.c
> > b/examples/ipsec-secgw/ipsec.c index ee24973..1929752 100644
> > --- a/examples/ipsec-secgw/ipsec.c
> > +++ b/examples/ipsec-secgw/ipsec.c
> > @@ -348,13 +348,19 @@ create_session(struct ipsec_ctx *ipsec_ctx,
> > struct ipsec_sa *sa) static inline void enqueue_cop(struct cdev_qp
> > *cqp, struct rte_crypto_op *cop) {
> > - int32_t ret, i;
> > + int32_t ret = 0, i;
> >
> > cqp->buf[cqp->len++] = cop;
> >
> > if (cqp->len == MAX_PKT_BURST) {
> > - ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp,
> > - cqp->buf, cqp->len);
> > + int enq_size = cqp->len;
> > + if ((cqp->in_flight + enq_size) >= MAX_INFLIGHT)
>
> This should be ((cqp->in_flight + enq_size) > MAX_INFLIGHT). there Will be one
> extra operation in case it is equal.
>
> Otherwise,
> Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
Applied to dpdk-next-crypto, with change requested.
Thanks,
Pablo
@@ -348,13 +348,19 @@ create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
static inline void
enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
{
- int32_t ret, i;
+ int32_t ret = 0, i;
cqp->buf[cqp->len++] = cop;
if (cqp->len == MAX_PKT_BURST) {
- ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp,
- cqp->buf, cqp->len);
+ int enq_size = cqp->len;
+ if ((cqp->in_flight + enq_size) >= MAX_INFLIGHT)
+ enq_size -=
+ (int)((cqp->in_flight + enq_size) - MAX_INFLIGHT);
+
+ if (enq_size > 0)
+ ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp,
+ cqp->buf, enq_size);
if (ret < cqp->len) {
RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:"
" enqueued %u crypto ops out of %u\n",
@@ -489,9 +495,12 @@ ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
struct ipsec_sa *sa;
struct rte_mbuf *pkt;
- for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts;) {
+ for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) {
struct cdev_qp *cqp;
- cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp];
+
+ cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++];
+ if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
+ ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
while (ipsec_ctx->ol_pkts_cnt > 0 && nb_pkts < max_pkts) {
pkt = ipsec_ctx->ol_pkts[--ipsec_ctx->ol_pkts_cnt];
@@ -506,13 +515,8 @@ ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
pkts[nb_pkts++] = pkt;
}
- if (cqp->in_flight == 0) {
- ipsec_ctx->last_qp++;
- if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
- ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
- i++;
+ if (cqp->in_flight == 0)
continue;
- }
nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp,
cops, max_pkts - nb_pkts);
@@ -536,12 +540,6 @@ ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
}
}
pkts[nb_pkts++] = pkt;
- if (cqp->in_flight < max_pkts) {
- ipsec_ctx->last_qp++;
- if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
- ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
- i++;
- }
}
}
@@ -17,6 +17,7 @@
#define RTE_LOGTYPE_IPSEC_IPIP RTE_LOGTYPE_USER3
#define MAX_PKT_BURST 32
+#define MAX_INFLIGHT 128
#define MAX_QP_PER_LCORE 256
#define MAX_DIGEST_SIZE 32 /* Bytes -- 256 bits */