From: Jeff Guo <jia.guo@intel.com>
To: qiming.yang@intel.com, beilei.xing@intel.com,
wei.zhao1@intel.com, qi.z.zhang@intel.com, jingjing.wu@intel.com
Cc: bruce.richardson@intel.com, dev@dpdk.org, jia.guo@intel.com,
helin.zhang@intel.com, mb@smartsharesystems.com,
ferruh.yigit@intel.com, barbette@kth.se
Subject: [dpdk-dev] [PATCH v2 4/5] net/iavf: maximize vector rx burst for iavf
Date: Thu, 27 Aug 2020 18:10:07 +0800 [thread overview]
Message-ID: <20200827101008.76906-5-jia.guo@intel.com> (raw)
In-Reply-To: <20200827101008.76906-1-jia.guo@intel.com>
The limitation of burst size in vector rx was removed, since it should
retrieve as much received packets as possible. And also the scattered
receive path should use a wrapper function to achieve the goal of
burst maximizing.
Signed-off-by: Jeff Guo <jia.guo@intel.com>
---
drivers/net/iavf/iavf_rxtx_vec_avx2.c | 21 +----
drivers/net/iavf/iavf_rxtx_vec_sse.c | 107 ++++++++++++++++----------
2 files changed, 68 insertions(+), 60 deletions(-)
diff --git a/drivers/net/iavf/iavf_rxtx_vec_avx2.c b/drivers/net/iavf/iavf_rxtx_vec_avx2.c
index e5e0fd309..35166d4c6 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_avx2.c
+++ b/drivers/net/iavf/iavf_rxtx_vec_avx2.c
@@ -1224,10 +1224,6 @@ _iavf_recv_raw_pkts_vec_avx2_flex_rxd(struct iavf_rx_queue *rxq,
return received;
}
-/**
- * Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
- */
uint16_t
iavf_recv_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts)
@@ -1235,10 +1231,6 @@ iavf_recv_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
return _iavf_recv_raw_pkts_vec_avx2(rx_queue, rx_pkts, nb_pkts, NULL);
}
-/**
- * Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
- */
uint16_t
iavf_recv_pkts_vec_avx2_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts)
@@ -1249,8 +1241,6 @@ iavf_recv_pkts_vec_avx2_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
/**
* vPMD receive routine that reassembles single burst of 32 scattered packets
- * Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
*/
static uint16_t
iavf_recv_scattered_burst_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
@@ -1290,9 +1280,6 @@ iavf_recv_scattered_burst_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
/**
* vPMD receive routine that reassembles scattered packets.
- * Main receive routine that can handle arbitrary burst sizes
- * Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
*/
uint16_t
iavf_recv_scattered_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
@@ -1313,10 +1300,7 @@ iavf_recv_scattered_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
}
/**
- * vPMD receive routine that reassembles single burst of
- * 32 scattered packets for flex RxD
- * Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
+ * vPMD receive routine that reassembles scattered packets for flex RxD
*/
static uint16_t
iavf_recv_scattered_burst_vec_avx2_flex_rxd(void *rx_queue,
@@ -1357,9 +1341,6 @@ iavf_recv_scattered_burst_vec_avx2_flex_rxd(void *rx_queue,
/**
* vPMD receive routine that reassembles scattered packets for flex RxD.
- * Main receive routine that can handle arbitrary burst sizes
- * Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
*/
uint16_t
iavf_recv_scattered_pkts_vec_avx2_flex_rxd(void *rx_queue,
diff --git a/drivers/net/iavf/iavf_rxtx_vec_sse.c b/drivers/net/iavf/iavf_rxtx_vec_sse.c
index 85c5bd4af..a78a741dd 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_sse.c
+++ b/drivers/net/iavf/iavf_rxtx_vec_sse.c
@@ -379,10 +379,12 @@ flex_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
rx_pkts[3]->packet_type = type_table[_mm_extract_epi16(ptype_all, 7)];
}
-/* Notice:
+/**
+ * vPMD raw receive routine, only accept(nb_pkts >= IAVF_VPMD_DESCS_PER_LOOP)
+ *
+ * Notice:
* - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- * numbers of DD bits
+ * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
*/
static inline uint16_t
_recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
@@ -413,9 +415,6 @@ _recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
__m128i dd_check, eop_check;
- /* nb_pkts shall be less equal than IAVF_VPMD_RX_MAX_BURST */
- nb_pkts = RTE_MIN(nb_pkts, IAVF_VPMD_RX_MAX_BURST);
-
/* nb_pkts has to be floor-aligned to IAVF_VPMD_DESCS_PER_LOOP */
nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_VPMD_DESCS_PER_LOOP);
@@ -627,11 +626,6 @@ _recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
return nb_pkts_recd;
}
-/* Notice:
- * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- * numbers of DD bits
- */
static inline uint16_t
_recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
struct rte_mbuf **rx_pkts,
@@ -688,9 +682,6 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
const __m128i eop_check = _mm_set_epi64x(0x0000000200000002LL,
0x0000000200000002LL);
- /* nb_pkts shall be less equal than IAVF_VPMD_RX_MAX_BURST */
- nb_pkts = RTE_MIN(nb_pkts, IAVF_VPMD_RX_MAX_BURST);
-
/* nb_pkts has to be floor-aligned to IAVF_VPMD_DESCS_PER_LOOP */
nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_VPMD_DESCS_PER_LOOP);
@@ -921,11 +912,6 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
return nb_pkts_recd;
}
-/* Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- * numbers of DD bits
- */
uint16_t
iavf_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts)
@@ -933,11 +919,6 @@ iavf_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
}
-/* Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- * numbers of DD bits
- */
uint16_t
iavf_recv_pkts_vec_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts)
@@ -945,15 +926,12 @@ iavf_recv_pkts_vec_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
return _recv_raw_pkts_vec_flex_rxd(rx_queue, rx_pkts, nb_pkts, NULL);
}
-/* vPMD receive routine that reassembles scattered packets
- * Notice:
- * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- * numbers of DD bits
+/**
+ * vPMD receive routine that reassembles scattered packets
*/
-uint16_t
-iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
+static uint16_t
+iavf_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
{
struct iavf_rx_queue *rxq = rx_queue;
uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
@@ -986,16 +964,39 @@ iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
&split_flags[i]);
}
-/* vPMD receive routine that reassembles scattered packets for flex RxD
- * Notice:
- * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- * numbers of DD bits
+/**
+ * vPMD receive routine that reassembles scattered packets.
*/
uint16_t
-iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
- struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
+iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ uint16_t retval = 0;
+
+ while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
+ uint16_t burst;
+
+ burst = iavf_recv_scattered_burst_vec(rx_queue,
+ rx_pkts + retval,
+ IAVF_VPMD_RX_MAX_BURST);
+ retval += burst;
+ nb_pkts -= burst;
+ if (burst < IAVF_VPMD_RX_MAX_BURST)
+ return retval;
+ }
+
+ return retval + iavf_recv_scattered_burst_vec(rx_queue,
+ rx_pkts + retval,
+ nb_pkts);
+}
+
+/**
+ * vPMD receive routine that reassembles scattered packets for flex RxD
+ */
+static uint16_t
+iavf_recv_scattered_burst_vec_flex_rxd(void *rx_queue,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
{
struct iavf_rx_queue *rxq = rx_queue;
uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
@@ -1028,6 +1029,32 @@ iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
&split_flags[i]);
}
+/**
+ * vPMD receive routine that reassembles scattered packets.
+ */
+uint16_t
+iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ uint16_t retval = 0;
+
+ while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
+ uint16_t burst;
+
+ burst = iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
+ rx_pkts + retval,
+ IAVF_VPMD_RX_MAX_BURST);
+ retval += burst;
+ nb_pkts -= burst;
+ if (burst < IAVF_VPMD_RX_MAX_BURST)
+ return retval;
+ }
+
+ return retval + iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
+ rx_pkts + retval, nb_pkts);
+}
+
static inline void
vtx1(volatile struct iavf_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags)
{
--
2.20.1
next prev parent reply other threads:[~2020-08-27 10:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-27 10:10 [dpdk-dev] [PATCH v2 0/5] maximize vector rx burst for PMDs Jeff Guo
2020-08-27 10:10 ` [dpdk-dev] [PATCH v2 1/5] net/ixgbe: maximize vector rx burst for ixgbe Jeff Guo
2020-08-27 10:10 ` [dpdk-dev] [PATCH v2 2/5] net/i40e: maximize vector rx burst for i40e Jeff Guo
2020-08-27 10:10 ` [dpdk-dev] [PATCH v2 3/5] net/ice: maximize vector rx burst for ice Jeff Guo
2020-08-31 4:41 ` Zhang, Qi Z
2020-08-31 5:24 ` Jeff Guo
2020-08-27 10:10 ` Jeff Guo [this message]
2020-08-27 10:10 ` [dpdk-dev] [PATCH v2 5/5] net/fm10k: maximize vector rx burst for fm10k Jeff Guo
2020-08-27 12:38 ` [dpdk-dev] [PATCH v2 0/5] maximize vector rx burst for PMDs Morten Brørup
2020-08-28 2:06 ` Wang, Haiyue
2020-08-28 6:39 ` Jeff Guo
2020-08-28 11:45 ` Morten Brørup
2020-08-28 20:30 ` Stephen Hemminger
2020-08-31 14:27 ` Wang, Haiyue
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