From: Lance Richardson <lance.richardson@broadcom.com>
To: Ajit Khaparde <ajit.khaparde@broadcom.com>,
Somnath Kotur <somnath.kotur@broadcom.com>
Cc: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 04/12] net/bnxt: require async cq for vector mode
Date: Wed, 9 Sep 2020 11:52:57 -0400 [thread overview]
Message-ID: <20200909155302.28656-5-lance.richardson@broadcom.com> (raw)
In-Reply-To: <20200909155302.28656-1-lance.richardson@broadcom.com>
Disable support for vector mode when async completions can be placed
in a receive completion ring and change the default for all platforms
to use a dedicated async completion ring.
Simplify completion handling in vector mode receive paths now that
it no longer needs to handle async completions.
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
---
drivers/net/bnxt/bnxt.h | 19 ++--
drivers/net/bnxt/bnxt_ethdev.c | 2 +-
drivers/net/bnxt/bnxt_rxtx_vec_neon.c | 121 +++++++++++---------------
drivers/net/bnxt/bnxt_rxtx_vec_sse.c | 116 +++++++++++-------------
4 files changed, 111 insertions(+), 147 deletions(-)
diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index a190d78bdd..ef5824cf9a 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -119,20 +119,19 @@
(BNXT_CHIP_THOR(bp) ? TPA_MAX_SEGS_TH : \
TPA_MAX_SEGS)
-#ifdef RTE_ARCH_ARM64
-#define BNXT_NUM_ASYNC_CPR(bp) (BNXT_STINGRAY(bp) ? 0 : 1)
+/*
+ * Define the number of async completion rings to be used. Set to zero for
+ * configurations in which the maximum number of packet completion rings
+ * for packet completions is desired or when async completion handling
+ * cannot be interrupt-driven.
+ */
+#ifdef RTE_EXEC_ENV_FREEBSD
+/* In FreeBSD OS, nic_uio driver does not support interrupts */
+#define BNXT_NUM_ASYNC_CPR(bp) 0
#else
#define BNXT_NUM_ASYNC_CPR(bp) 1
#endif
-/* In FreeBSD OS, nic_uio driver does not support interrupts */
-#ifdef RTE_EXEC_ENV_FREEBSD
-#ifdef BNXT_NUM_ASYNC_CPR
-#undef BNXT_NUM_ASYNC_CPR
-#endif
-#define BNXT_NUM_ASYNC_CPR(bp) 0
-#endif
-
#define BNXT_MISC_VEC_ID RTE_INTR_VEC_ZERO_OFFSET
#define BNXT_RX_VEC_START RTE_INTR_VEC_RXTX_OFFSET
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index c57c5cc2af..1ad9bfc0a6 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1114,7 +1114,7 @@ bnxt_receive_function(struct rte_eth_dev *eth_dev)
DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
DEV_RX_OFFLOAD_RSS_HASH |
DEV_RX_OFFLOAD_VLAN_FILTER)) &&
- !BNXT_TRUFLOW_EN(bp)) {
+ !BNXT_TRUFLOW_EN(bp) && BNXT_NUM_ASYNC_CPR(bp)) {
PMD_DRV_LOG(INFO, "Using vector mode receive for port %d\n",
eth_dev->data->port_id);
bp->flags |= BNXT_FLAG_RX_VECTOR_PKT_MODE;
diff --git a/drivers/net/bnxt/bnxt_rxtx_vec_neon.c b/drivers/net/bnxt/bnxt_rxtx_vec_neon.c
index eff196f3a0..a212d46cbe 100644
--- a/drivers/net/bnxt/bnxt_rxtx_vec_neon.c
+++ b/drivers/net/bnxt/bnxt_rxtx_vec_neon.c
@@ -206,7 +206,6 @@ bnxt_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
uint32_t cons;
int nb_rx_pkts = 0;
struct rx_pkt_cmpl *rxcmp;
- bool evt = false;
const uint64x2_t mbuf_init = {rxq->mbuf_initializer, 0};
const uint8x16_t shuf_msk = {
0xFF, 0xFF, 0xFF, 0xFF, /* pkt_type (zeroes) */
@@ -215,6 +214,7 @@ bnxt_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
0xFF, 0xFF, /* vlan_tci (zeroes) */
12, 13, 14, 15 /* rss hash */
};
+ int i;
/* If Rx Q was stopped return */
if (unlikely(!rxq->rx_started))
@@ -226,90 +226,73 @@ bnxt_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
/* Return no more than RTE_BNXT_MAX_RX_BURST per call. */
nb_pkts = RTE_MIN(nb_pkts, RTE_BNXT_MAX_RX_BURST);
- /* Make nb_pkts an integer multiple of RTE_BNXT_DESCS_PER_LOOP */
+ /* Make nb_pkts an integer multiple of RTE_BNXT_DESCS_PER_LOOP. */
nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_BNXT_DESCS_PER_LOOP);
if (!nb_pkts)
return 0;
/* Handle RX burst request */
- while (1) {
+ for (i = 0; i < nb_pkts; i++) {
+ struct rx_pkt_cmpl_hi *rxcmp1;
+ struct rte_mbuf *mbuf;
+ uint64x2_t mm_rxcmp;
+ uint8x16_t pkt_mb;
+
cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
+ rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cons + 1];
- if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
+ if (!CMP_VALID(rxcmp1, raw_cons + 1, cpr->cp_ring_struct))
break;
- if (likely(CMP_TYPE(rxcmp) == RX_PKT_CMPL_TYPE_RX_L2)) {
- struct rx_pkt_cmpl_hi *rxcmp1;
- uint32_t tmp_raw_cons;
- uint16_t cp_cons;
- struct rte_mbuf *mbuf;
- uint64x2_t mm_rxcmp;
- uint8x16_t pkt_mb;
-
- tmp_raw_cons = NEXT_RAW_CMP(raw_cons);
- cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
- rxcmp1 = (struct rx_pkt_cmpl_hi *)
- &cpr->cp_desc_ring[cp_cons];
-
- if (!CMP_VALID(rxcmp1, tmp_raw_cons,
- cpr->cp_ring_struct))
- break;
-
- raw_cons = tmp_raw_cons;
- cons = rxcmp->opaque;
-
- mbuf = rxr->rx_buf_ring[cons];
- rte_prefetch0(mbuf);
- rxr->rx_buf_ring[cons] = NULL;
-
- /* Set constant fields from mbuf initializer. */
- vst1q_u64((uint64_t *)&mbuf->rearm_data, mbuf_init);
-
- /* Set mbuf pkt_len, data_len, and rss_hash fields. */
- mm_rxcmp = vld1q_u64((uint64_t *)rxcmp);
- pkt_mb = vqtbl1q_u8(vreinterpretq_u8_u64(mm_rxcmp),
- shuf_msk);
- vst1q_u64((uint64_t *)&mbuf->rx_descriptor_fields1,
- vreinterpretq_u64_u8(pkt_mb));
-
- rte_compiler_barrier();
-
- if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID)
- mbuf->ol_flags |= PKT_RX_RSS_HASH;
-
- if (rxcmp1->flags2 &
- RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
- mbuf->vlan_tci = rxcmp1->metadata &
- (RX_PKT_CMPL_METADATA_VID_MASK |
- RX_PKT_CMPL_METADATA_DE |
- RX_PKT_CMPL_METADATA_PRI_MASK);
- mbuf->ol_flags |=
- PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
- }
-
- bnxt_parse_csum(mbuf, rxcmp1);
- mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
-
- rx_pkts[nb_rx_pkts++] = mbuf;
- } else if (!BNXT_NUM_ASYNC_CPR(rxq->bp)) {
- evt =
- bnxt_event_hwrm_resp_handler(rxq->bp,
- (struct cmpl_base *)rxcmp);
+ raw_cons += 2;
+ cons = rxcmp->opaque;
+
+ mbuf = rxr->rx_buf_ring[cons];
+ rte_prefetch0(mbuf);
+ rxr->rx_buf_ring[cons] = NULL;
+
+ /* Set constant fields from mbuf initializer. */
+ vst1q_u64((uint64_t *)&mbuf->rearm_data, mbuf_init);
+
+ /* Set mbuf pkt_len, data_len, and rss_hash fields. */
+ mm_rxcmp = vld1q_u64((uint64_t *)rxcmp);
+ pkt_mb = vqtbl1q_u8(vreinterpretq_u8_u64(mm_rxcmp), shuf_msk);
+ vst1q_u64((uint64_t *)&mbuf->rx_descriptor_fields1,
+ vreinterpretq_u64_u8(pkt_mb));
+
+ rte_compiler_barrier();
+
+ if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID)
+ mbuf->ol_flags |= PKT_RX_RSS_HASH;
+
+ if (rxcmp1->flags2 &
+ RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
+ mbuf->vlan_tci = rxcmp1->metadata &
+ (RX_PKT_CMPL_METADATA_VID_MASK |
+ RX_PKT_CMPL_METADATA_DE |
+ RX_PKT_CMPL_METADATA_PRI_MASK);
+ mbuf->ol_flags |=
+ PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
}
- raw_cons = NEXT_RAW_CMP(raw_cons);
- if (nb_rx_pkts == nb_pkts || evt)
- break;
+ bnxt_parse_csum(mbuf, rxcmp1);
+ mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
+
+ rx_pkts[nb_rx_pkts++] = mbuf;
}
- rxr->rx_prod = RING_ADV(rxr->rx_ring_struct, rxr->rx_prod, nb_rx_pkts);
- rxq->rxrearm_nb += nb_rx_pkts;
- cpr->cp_raw_cons = raw_cons;
- cpr->valid = !!(cpr->cp_raw_cons & cpr->cp_ring_struct->ring_size);
- if (nb_rx_pkts || evt)
+ if (nb_rx_pkts) {
+ rxr->rx_prod =
+ RING_ADV(rxr->rx_ring_struct, rxr->rx_prod, nb_rx_pkts);
+
+ rxq->rxrearm_nb += nb_rx_pkts;
+ cpr->cp_raw_cons = raw_cons;
+ cpr->valid =
+ !!(cpr->cp_raw_cons & cpr->cp_ring_struct->ring_size);
bnxt_db_cq(cpr);
+ }
return nb_rx_pkts;
}
diff --git a/drivers/net/bnxt/bnxt_rxtx_vec_sse.c b/drivers/net/bnxt/bnxt_rxtx_vec_sse.c
index 822e43343f..c00d7f6807 100644
--- a/drivers/net/bnxt/bnxt_rxtx_vec_sse.c
+++ b/drivers/net/bnxt/bnxt_rxtx_vec_sse.c
@@ -210,7 +210,6 @@ bnxt_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
uint32_t cons;
int nb_rx_pkts = 0;
struct rx_pkt_cmpl *rxcmp;
- bool evt = false;
const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
const __m128i shuf_msk =
_mm_set_epi8(15, 14, 13, 12, /* rss */
@@ -218,6 +217,7 @@ bnxt_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
3, 2, /* data_len */
0xFF, 0xFF, 3, 2, /* pkt_len */
0xFF, 0xFF, 0xFF, 0xFF); /* pkt_type (zeroes) */
+ int i;
/* If Rx Q was stopped return */
if (unlikely(!rxq->rx_started))
@@ -238,83 +238,65 @@ bnxt_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
return 0;
/* Handle RX burst request */
- while (1) {
+ for (i = 0; i < nb_pkts; i++) {
+ struct rx_pkt_cmpl_hi *rxcmp1;
+ struct rte_mbuf *mbuf;
+ __m128i mm_rxcmp, pkt_mb;
+
cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
+ rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cons + 1];
- if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
+ if (!CMP_VALID(rxcmp1, raw_cons + 1, cpr->cp_ring_struct))
break;
- if (likely(CMP_TYPE(rxcmp) == RX_PKT_CMPL_TYPE_RX_L2)) {
- struct rx_pkt_cmpl_hi *rxcmp1;
- uint32_t tmp_raw_cons;
- uint16_t cp_cons;
- struct rte_mbuf *mbuf;
- __m128i mm_rxcmp, pkt_mb;
-
- tmp_raw_cons = NEXT_RAW_CMP(raw_cons);
- cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
- rxcmp1 = (struct rx_pkt_cmpl_hi *)
- &cpr->cp_desc_ring[cp_cons];
-
- if (!CMP_VALID(rxcmp1, tmp_raw_cons,
- cpr->cp_ring_struct))
- break;
-
- raw_cons = tmp_raw_cons;
- cons = rxcmp->opaque;
-
- mbuf = rxr->rx_buf_ring[cons];
- rte_prefetch0(mbuf);
- rxr->rx_buf_ring[cons] = NULL;
-
- /* Set constant fields from mbuf initializer. */
- _mm_store_si128((__m128i *)&mbuf->rearm_data,
- mbuf_init);
-
- /* Set mbuf pkt_len, data_len, and rss_hash fields. */
- mm_rxcmp = _mm_load_si128((__m128i *)rxcmp);
- pkt_mb = _mm_shuffle_epi8(mm_rxcmp, shuf_msk);
- _mm_storeu_si128((void *)&mbuf->rx_descriptor_fields1,
- pkt_mb);
-
- rte_compiler_barrier();
-
- if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID)
- mbuf->ol_flags |= PKT_RX_RSS_HASH;
-
- if (rxcmp1->flags2 &
- RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
- mbuf->vlan_tci = rxcmp1->metadata &
- (RX_PKT_CMPL_METADATA_VID_MASK |
- RX_PKT_CMPL_METADATA_DE |
- RX_PKT_CMPL_METADATA_PRI_MASK);
- mbuf->ol_flags |=
- PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
- }
-
- bnxt_parse_csum(mbuf, rxcmp1);
- mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
-
- rx_pkts[nb_rx_pkts++] = mbuf;
- } else if (!BNXT_NUM_ASYNC_CPR(rxq->bp)) {
- evt =
- bnxt_event_hwrm_resp_handler(rxq->bp,
- (struct cmpl_base *)rxcmp);
+ raw_cons += 2;
+ cons = rxcmp->opaque;
+
+ mbuf = rxr->rx_buf_ring[cons];
+ rte_prefetch0(mbuf);
+ rxr->rx_buf_ring[cons] = NULL;
+
+ /* Set constant fields from mbuf initializer. */
+ _mm_store_si128((__m128i *)&mbuf->rearm_data, mbuf_init);
+
+ /* Set mbuf pkt_len, data_len, and rss_hash fields. */
+ mm_rxcmp = _mm_load_si128((__m128i *)rxcmp);
+ pkt_mb = _mm_shuffle_epi8(mm_rxcmp, shuf_msk);
+ _mm_storeu_si128((void *)&mbuf->rx_descriptor_fields1, pkt_mb);
+
+ rte_compiler_barrier();
+
+ if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID)
+ mbuf->ol_flags |= PKT_RX_RSS_HASH;
+
+ if (rxcmp1->flags2 &
+ RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
+ mbuf->vlan_tci = rxcmp1->metadata &
+ (RX_PKT_CMPL_METADATA_VID_MASK |
+ RX_PKT_CMPL_METADATA_DE |
+ RX_PKT_CMPL_METADATA_PRI_MASK);
+ mbuf->ol_flags |=
+ PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
}
- raw_cons = NEXT_RAW_CMP(raw_cons);
- if (nb_rx_pkts == nb_pkts || evt)
- break;
+ bnxt_parse_csum(mbuf, rxcmp1);
+ mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
+
+ rx_pkts[nb_rx_pkts++] = mbuf;
}
- rxr->rx_prod = RING_ADV(rxr->rx_ring_struct, rxr->rx_prod, nb_rx_pkts);
- rxq->rxrearm_nb += nb_rx_pkts;
- cpr->cp_raw_cons = raw_cons;
- cpr->valid = !!(cpr->cp_raw_cons & cpr->cp_ring_struct->ring_size);
- if (nb_rx_pkts || evt)
+ if (nb_rx_pkts) {
+ rxr->rx_prod =
+ RING_ADV(rxr->rx_ring_struct, rxr->rx_prod, nb_rx_pkts);
+
+ rxq->rxrearm_nb += nb_rx_pkts;
+ cpr->cp_raw_cons = raw_cons;
+ cpr->valid =
+ !!(cpr->cp_raw_cons & cpr->cp_ring_struct->ring_size);
bnxt_db_cq(cpr);
+ }
return nb_rx_pkts;
}
--
2.25.1
next prev parent reply other threads:[~2020-09-09 15:53 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 15:52 [dpdk-dev] [PATCH 00/12] net/bnxt: vector PMD improvements Lance Richardson
2020-09-09 15:52 ` [dpdk-dev] [PATCH 01/12] net/bnxt: fix burst mode get for Arm Lance Richardson
2020-09-09 15:52 ` [dpdk-dev] [PATCH 02/12] net/bnxt: fix rxq/txq get information Lance Richardson
2020-09-11 14:41 ` Ferruh Yigit
2020-09-18 18:41 ` Lance Richardson
2020-09-21 11:05 ` Ferruh Yigit
2020-09-09 15:52 ` [dpdk-dev] [PATCH 03/12] net/bnxt: use appropriate type for Rx mbuf ring Lance Richardson
2020-09-09 15:52 ` Lance Richardson [this message]
2020-09-11 15:02 ` [dpdk-dev] [PATCH 04/12] net/bnxt: require async cq for vector mode Ferruh Yigit
2020-09-11 15:07 ` Lance Richardson
2020-09-09 15:52 ` [dpdk-dev] [PATCH 05/12] net/bnxt: improve support for small ring sizes Lance Richardson
2020-09-14 22:03 ` Ferruh Yigit
2020-09-15 14:12 ` Lance Richardson
2020-09-09 15:52 ` [dpdk-dev] [PATCH 06/12] net/bnxt: use smaller cq when agg ring not needed Lance Richardson
2020-09-09 15:53 ` [dpdk-dev] [PATCH 07/12] net/bnxt: increase max burst size for vector mode Lance Richardson
2020-09-11 15:19 ` Ferruh Yigit
2020-09-11 15:38 ` Lance Richardson
2020-09-11 15:56 ` Ferruh Yigit
2020-09-09 15:53 ` [dpdk-dev] [PATCH 08/12] net/bnxt: use table-based packet type translation Lance Richardson
2020-09-09 15:53 ` [dpdk-dev] [PATCH 09/12] net/bnxt: table-based handling for ol flags Lance Richardson
2020-09-11 3:42 ` [dpdk-dev] [PATCH 00/12] net/bnxt: vector PMD improvements Ajit Khaparde
2020-09-11 15:58 ` Ferruh Yigit
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