* [dpdk-stable] [PATCH v6 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued
[not found] <1546011238-22318-2-git-send-email-konstantin.ananyev@intel.com>
@ 2019-01-03 20:25 ` Konstantin Ananyev
2019-01-03 20:25 ` [dpdk-stable] [PATCH v6 04/10] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: Konstantin Ananyev @ 2019-01-03 20:25 UTC (permalink / raw)
To: dev, dev; +Cc: akhil.goyal, Konstantin Ananyev, stable
In some cases crypto-ops could never be dequeued from the crypto-device.
The easiest way to reproduce:
start ipsec-secgw with crypto-dev and send to it less then 32 packets.
none packets will be forwarded.
Reason for that is that the application does dequeue() from crypto-queues
only when new packets arrive.
This patch makes the app to call dequeue() on a regular basis.
Also to make code cleaner and easier to understand,
it separates crypto-dev enqueue() and dequeue() code paths.
pkt_process() now only enqueues packets into crypto device,
dequeuing and final processing is done by drain_crypto_queues().
Fixes: c64278c0c18b ("examples/ipsec-secgw: rework processing loop")
Cc: stable@dpdk.org
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
---
examples/ipsec-secgw/ipsec-secgw.c | 136 ++++++++++++++++++++++++-----
examples/ipsec-secgw/ipsec.c | 99 +++++++++++++--------
examples/ipsec-secgw/ipsec.h | 11 +++
3 files changed, 191 insertions(+), 55 deletions(-)
diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
index e79d17d51..2a8ead708 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -469,38 +469,55 @@ inbound_sp_sa(struct sp_ctx *sp, struct sa_ctx *sa, struct traffic_type *ip,
ip->num = j;
}
-static inline void
-process_pkts_inbound(struct ipsec_ctx *ipsec_ctx,
- struct ipsec_traffic *traffic)
+static void
+split46_traffic(struct ipsec_traffic *trf, struct rte_mbuf *mb[], uint32_t num)
{
+ uint32_t i, n4, n6;
+ struct ip *ip;
struct rte_mbuf *m;
- uint16_t idx, nb_pkts_in, i, n_ip4, n_ip6;
- nb_pkts_in = ipsec_inbound(ipsec_ctx, traffic->ipsec.pkts,
- traffic->ipsec.num, MAX_PKT_BURST);
+ n4 = trf->ip4.num;
+ n6 = trf->ip6.num;
- n_ip4 = traffic->ip4.num;
- n_ip6 = traffic->ip6.num;
+ for (i = 0; i < num; i++) {
+
+ m = mb[i];
+ ip = rte_pktmbuf_mtod(m, struct ip *);
- /* SP/ACL Inbound check ipsec and ip4 */
- for (i = 0; i < nb_pkts_in; i++) {
- m = traffic->ipsec.pkts[i];
- struct ip *ip = rte_pktmbuf_mtod(m, struct ip *);
if (ip->ip_v == IPVERSION) {
- idx = traffic->ip4.num++;
- traffic->ip4.pkts[idx] = m;
- traffic->ip4.data[idx] = rte_pktmbuf_mtod_offset(m,
+ trf->ip4.pkts[n4] = m;
+ trf->ip4.data[n4] = rte_pktmbuf_mtod_offset(m,
uint8_t *, offsetof(struct ip, ip_p));
+ n4++;
} else if (ip->ip_v == IP6_VERSION) {
- idx = traffic->ip6.num++;
- traffic->ip6.pkts[idx] = m;
- traffic->ip6.data[idx] = rte_pktmbuf_mtod_offset(m,
+ trf->ip6.pkts[n6] = m;
+ trf->ip6.data[n6] = rte_pktmbuf_mtod_offset(m,
uint8_t *,
offsetof(struct ip6_hdr, ip6_nxt));
+ n6++;
} else
rte_pktmbuf_free(m);
}
+ trf->ip4.num = n4;
+ trf->ip6.num = n6;
+}
+
+
+static inline void
+process_pkts_inbound(struct ipsec_ctx *ipsec_ctx,
+ struct ipsec_traffic *traffic)
+{
+ uint16_t nb_pkts_in, n_ip4, n_ip6;
+
+ n_ip4 = traffic->ip4.num;
+ n_ip6 = traffic->ip6.num;
+
+ nb_pkts_in = ipsec_inbound(ipsec_ctx, traffic->ipsec.pkts,
+ traffic->ipsec.num, MAX_PKT_BURST);
+
+ split46_traffic(traffic, traffic->ipsec.pkts, nb_pkts_in);
+
inbound_sp_sa(ipsec_ctx->sp4_ctx, ipsec_ctx->sa_ctx, &traffic->ip4,
n_ip4);
@@ -795,7 +812,7 @@ process_pkts(struct lcore_conf *qconf, struct rte_mbuf **pkts,
}
static inline void
-drain_buffers(struct lcore_conf *qconf)
+drain_tx_buffers(struct lcore_conf *qconf)
{
struct buffer *buf;
uint32_t portid;
@@ -809,6 +826,81 @@ drain_buffers(struct lcore_conf *qconf)
}
}
+static inline void
+drain_crypto_buffers(struct lcore_conf *qconf)
+{
+ uint32_t i;
+ struct ipsec_ctx *ctx;
+
+ /* drain inbound buffers*/
+ ctx = &qconf->inbound;
+ for (i = 0; i != ctx->nb_qps; i++) {
+ if (ctx->tbl[i].len != 0)
+ enqueue_cop_burst(ctx->tbl + i);
+ }
+
+ /* drain outbound buffers*/
+ ctx = &qconf->outbound;
+ for (i = 0; i != ctx->nb_qps; i++) {
+ if (ctx->tbl[i].len != 0)
+ enqueue_cop_burst(ctx->tbl + i);
+ }
+}
+
+static void
+drain_inbound_crypto_queues(const struct lcore_conf *qconf,
+ struct ipsec_ctx *ctx)
+{
+ uint32_t n;
+ struct ipsec_traffic trf;
+
+ /* dequeue packets from crypto-queue */
+ n = ipsec_inbound_cqp_dequeue(ctx, trf.ipsec.pkts,
+ RTE_DIM(trf.ipsec.pkts));
+ if (n == 0)
+ return;
+
+ trf.ip4.num = 0;
+ trf.ip6.num = 0;
+
+ /* split traffic by ipv4-ipv6 */
+ split46_traffic(&trf, trf.ipsec.pkts, n);
+
+ /* process ipv4 packets */
+ inbound_sp_sa(ctx->sp4_ctx, ctx->sa_ctx, &trf.ip4, 0);
+ route4_pkts(qconf->rt4_ctx, trf.ip4.pkts, trf.ip4.num);
+
+ /* process ipv6 packets */
+ inbound_sp_sa(ctx->sp6_ctx, ctx->sa_ctx, &trf.ip6, 0);
+ route6_pkts(qconf->rt6_ctx, trf.ip6.pkts, trf.ip6.num);
+}
+
+static void
+drain_outbound_crypto_queues(const struct lcore_conf *qconf,
+ struct ipsec_ctx *ctx)
+{
+ uint32_t n;
+ struct ipsec_traffic trf;
+
+ /* dequeue packets from crypto-queue */
+ n = ipsec_outbound_cqp_dequeue(ctx, trf.ipsec.pkts,
+ RTE_DIM(trf.ipsec.pkts));
+ if (n == 0)
+ return;
+
+ trf.ip4.num = 0;
+ trf.ip6.num = 0;
+
+ /* split traffic by ipv4-ipv6 */
+ split46_traffic(&trf, trf.ipsec.pkts, n);
+
+ /* process ipv4 packets */
+ route4_pkts(qconf->rt4_ctx, trf.ip4.pkts, trf.ip4.num);
+
+ /* process ipv6 packets */
+ route6_pkts(qconf->rt6_ctx, trf.ip6.pkts, trf.ip6.num);
+}
+
/* main processing loop */
static int32_t
main_loop(__attribute__((unused)) void *dummy)
@@ -866,7 +958,8 @@ main_loop(__attribute__((unused)) void *dummy)
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
- drain_buffers(qconf);
+ drain_tx_buffers(qconf);
+ drain_crypto_buffers(qconf);
prev_tsc = cur_tsc;
}
@@ -880,6 +973,9 @@ main_loop(__attribute__((unused)) void *dummy)
if (nb_rx > 0)
process_pkts(qconf, pkts, nb_rx, portid);
}
+
+ drain_inbound_crypto_queues(qconf, &qconf->inbound);
+ drain_outbound_crypto_queues(qconf, &qconf->outbound);
}
}
diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
index 3d415f1af..72a29bcb1 100644
--- a/examples/ipsec-secgw/ipsec.c
+++ b/examples/ipsec-secgw/ipsec.c
@@ -333,33 +333,35 @@ create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
return 0;
}
+/*
+ * queue crypto-ops into PMD queue.
+ */
+void
+enqueue_cop_burst(struct cdev_qp *cqp)
+{
+ uint32_t i, len, ret;
+
+ len = cqp->len;
+ ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, cqp->buf, len);
+ if (ret < len) {
+ RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:"
+ " enqueued %u crypto ops out of %u\n",
+ cqp->id, cqp->qp, ret, len);
+ /* drop packets that we fail to enqueue */
+ for (i = ret; i < len; i++)
+ rte_pktmbuf_free(cqp->buf[i]->sym->m_src);
+ }
+ cqp->in_flight += ret;
+ cqp->len = 0;
+}
+
static inline void
enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
{
- int32_t ret = 0, i;
-
cqp->buf[cqp->len++] = cop;
- if (cqp->len == MAX_PKT_BURST) {
- 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",
- cqp->id, cqp->qp,
- ret, cqp->len);
- for (i = ret; i < cqp->len; i++)
- rte_pktmbuf_free(cqp->buf[i]->sym->m_src);
- }
- cqp->in_flight += ret;
- cqp->len = 0;
- }
+ if (cqp->len == MAX_PKT_BURST)
+ enqueue_cop_burst(cqp);
}
static inline void
@@ -473,6 +475,32 @@ ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
}
}
+static inline int32_t
+ipsec_inline_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
+ struct rte_mbuf *pkts[], uint16_t max_pkts)
+{
+ int32_t nb_pkts, ret;
+ struct ipsec_mbuf_metadata *priv;
+ struct ipsec_sa *sa;
+ struct rte_mbuf *pkt;
+
+ nb_pkts = 0;
+ while (ipsec_ctx->ol_pkts_cnt > 0 && nb_pkts < max_pkts) {
+ pkt = ipsec_ctx->ol_pkts[--ipsec_ctx->ol_pkts_cnt];
+ rte_prefetch0(pkt);
+ priv = get_priv(pkt);
+ sa = priv->sa;
+ ret = xform_func(pkt, sa, &priv->cop);
+ if (unlikely(ret)) {
+ rte_pktmbuf_free(pkt);
+ continue;
+ }
+ pkts[nb_pkts++] = pkt;
+ }
+
+ return nb_pkts;
+}
+
static inline int
ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
struct rte_mbuf *pkts[], uint16_t max_pkts)
@@ -490,19 +518,6 @@ ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
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];
- rte_prefetch0(pkt);
- priv = get_priv(pkt);
- sa = priv->sa;
- ret = xform_func(pkt, sa, &priv->cop);
- if (unlikely(ret)) {
- rte_pktmbuf_free(pkt);
- continue;
- }
- pkts[nb_pkts++] = pkt;
- }
-
if (cqp->in_flight == 0)
continue;
@@ -545,6 +560,13 @@ ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts);
+ return ipsec_inline_dequeue(esp_inbound_post, ctx, pkts, len);
+}
+
+uint16_t
+ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
+ uint16_t len)
+{
return ipsec_dequeue(esp_inbound_post, ctx, pkts, len);
}
@@ -558,5 +580,12 @@ ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts);
+ return ipsec_inline_dequeue(esp_outbound_post, ctx, pkts, len);
+}
+
+uint16_t
+ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
+ uint16_t len)
+{
return ipsec_dequeue(esp_outbound_post, ctx, pkts, len);
}
diff --git a/examples/ipsec-secgw/ipsec.h b/examples/ipsec-secgw/ipsec.h
index 580f7876b..2f04b7d68 100644
--- a/examples/ipsec-secgw/ipsec.h
+++ b/examples/ipsec-secgw/ipsec.h
@@ -184,6 +184,14 @@ uint16_t
ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len);
+uint16_t
+ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
+ uint16_t len);
+
+uint16_t
+ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
+ uint16_t len);
+
static inline uint16_t
ipsec_metadata_size(void)
{
@@ -248,4 +256,7 @@ sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads,
int
add_dst_ethaddr(uint16_t port, const struct ether_addr *addr);
+void
+enqueue_cop_burst(struct cdev_qp *cqp);
+
#endif /* __IPSEC_H__ */
--
2.17.1
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