This patch enables Rx timestamp offload on SSE data path.
Enable timestamp offload with the command '--enable-rx-timestamp',
pay attention that getting Rx timestamp offload will drop the performance.
Signed-off-by: Zhichao Zeng <zhichaox.z...@intel.com>
---
v4: rework avx2 patch based on offload path
---
v3: logging with driver dedicated macro
---
v2: fix compile warning and timestamp error
---
drivers/net/iavf/iavf_rxtx_vec_sse.c | 159 ++++++++++++++++++++++++++-
1 file changed, 156 insertions(+), 3 deletions(-)
diff --git a/drivers/net/iavf/iavf_rxtx_vec_sse.c
b/drivers/net/iavf/iavf_rxtx_vec_sse.c
index 3f30be01aa..b754122c51 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_sse.c
+++ b/drivers/net/iavf/iavf_rxtx_vec_sse.c
@@ -392,6 +392,11 @@ flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i
descs[4],
_mm_extract_epi32(fdir_id0_3, 3);
} /* if() on fdir_enabled */
+#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
+ if (rxq->offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP)
+ flags = _mm_or_si128(flags,
_mm_set1_epi32(iavf_timestamp_dynflag));
+#endif
+
/**
* At this point, we have the 4 sets of flags in the low 16-bits
* of each 32-bit value in flags.
@@ -723,7 +728,9 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
int pos;
uint64_t var;
struct iavf_adapter *adapter = rxq->vsi->adapter;
+#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
uint64_t offloads = adapter->dev_data->dev_conf.rxmode.offloads;
+#endif
const uint32_t *ptype_tbl = adapter->ptype_tbl;
__m128i crc_adjust = _mm_set_epi16
(0, 0, 0, /* ignore non-length fields */
@@ -793,6 +800,24 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
rte_cpu_to_le_32(1 << IAVF_RX_FLEX_DESC_STATUS0_DD_S)))
return 0;
+#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
+ uint8_t inflection_point = 0;
+ bool is_tsinit = false;
+ __m128i hw_low_last = _mm_set_epi32(0, 0, 0, (uint32_t)rxq->phc_time);
+
+ if (rxq->offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP) {
+ uint64_t sw_cur_time = rte_get_timer_cycles() /
(rte_get_timer_hz() / 1000);
+
+ if (unlikely(sw_cur_time - rxq->hw_time_update > 4)) {
+ hw_low_last = _mm_setzero_si128();
+ is_tsinit = 1;
+ } else {
+ hw_low_last = _mm_set_epi32(0, 0, 0,
(uint32_t)rxq->phc_time);
+ }
+ }
+
+#endif
+
/**
* Compile-time verify the shuffle mask
* NOTE: some field positions already verified above, but duplicated
@@ -825,7 +850,7 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
rxdp += IAVF_VPMD_DESCS_PER_LOOP) {
__m128i descs[IAVF_VPMD_DESCS_PER_LOOP];
#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
- __m128i descs_bh[IAVF_VPMD_DESCS_PER_LOOP];
+ __m128i descs_bh[IAVF_VPMD_DESCS_PER_LOOP] =
{_mm_setzero_si128()};
#endif
__m128i pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
__m128i staterr, sterr_tmp1, sterr_tmp2;
@@ -895,10 +920,11 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
/**
- * needs to load 2nd 16B of each desc for RSS hash parsing,
+ * needs to load 2nd 16B of each desc,
* will cause performance drop to get into this context.
*/
if (offloads & RTE_ETH_RX_OFFLOAD_RSS_HASH ||
+ offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP ||
rxq->rx_flags & IAVF_RX_FLAGS_VLAN_TAG_LOC_L2TAG2_2) {
/* load bottom half of every 32B desc */
descs_bh[3] = _mm_load_si128
@@ -964,7 +990,94 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
pkt_mb2 = _mm_or_si128(pkt_mb2, vlan_tci2);
pkt_mb1 = _mm_or_si128(pkt_mb1, vlan_tci1);
pkt_mb0 = _mm_or_si128(pkt_mb0, vlan_tci0);
- }
+ } /* if() on Vlan parsing */
+
+ if (offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP) {
+ uint32_t mask = 0xFFFFFFFF;
+ __m128i ts;
+ __m128i ts_low = _mm_setzero_si128();
+ __m128i ts_low1;
+ __m128i max_ret;
+ __m128i cmp_ret;
+ uint8_t ret = 0;
+ uint8_t shift = 4;
+ __m128i ts_desp_mask = _mm_set_epi32(mask, 0, 0, 0);
+ __m128i cmp_mask = _mm_set1_epi32(mask);
+
+ ts = _mm_and_si128(descs_bh[0], ts_desp_mask);
+ ts_low = _mm_or_si128(ts_low, _mm_srli_si128(ts, 3 *
4));
+ ts = _mm_and_si128(descs_bh[1], ts_desp_mask);
+ ts_low = _mm_or_si128(ts_low, _mm_srli_si128(ts, 2 *
4));
+ ts = _mm_and_si128(descs_bh[2], ts_desp_mask);
+ ts_low = _mm_or_si128(ts_low, _mm_srli_si128(ts, 1 *
4));
+ ts = _mm_and_si128(descs_bh[3], ts_desp_mask);
+ ts_low = _mm_or_si128(ts_low, ts);
+
+ ts_low1 = _mm_slli_si128(ts_low, 4);
+ ts_low1 = _mm_and_si128(ts_low, _mm_set_epi32(mask,
mask, mask, 0));
+ ts_low1 = _mm_or_si128(ts_low1, hw_low_last);
+ hw_low_last = _mm_and_si128(ts_low, _mm_set_epi32(0, 0,
0, mask));
+
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 0],
+ iavf_timestamp_dynfield_offset, uint32_t *) =
_mm_extract_epi32(ts_low, 0);
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 1],
+ iavf_timestamp_dynfield_offset, uint32_t *) =
_mm_extract_epi32(ts_low, 1);
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 2],
+ iavf_timestamp_dynfield_offset, uint32_t *) =
_mm_extract_epi32(ts_low, 2);
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 3],
+ iavf_timestamp_dynfield_offset, uint32_t *) =
_mm_extract_epi32(ts_low, 3);
+
+ if (unlikely(is_tsinit)) {
+ uint32_t in_timestamp;
+
+ if (iavf_get_phc_time(rxq))
+ PMD_DRV_LOG(ERR, "get physical time
failed");
+ in_timestamp = *RTE_MBUF_DYNFIELD(rx_pkts[pos +
0],
+
iavf_timestamp_dynfield_offset, uint32_t *);
+ rxq->phc_time =
iavf_tstamp_convert_32b_64b(rxq->phc_time, in_timestamp);
+ }
+
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 0],
+ iavf_timestamp_dynfield_offset + 4, uint32_t *)
= (uint32_t)(rxq->phc_time >> 32);
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 1],
+ iavf_timestamp_dynfield_offset + 4, uint32_t *)
= (uint32_t)(rxq->phc_time >> 32);
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 2],
+ iavf_timestamp_dynfield_offset + 4, uint32_t *)
= (uint32_t)(rxq->phc_time >> 32);
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 3],
+ iavf_timestamp_dynfield_offset + 4, uint32_t *)
= (uint32_t)(rxq->phc_time >> 32);
+
+ max_ret = _mm_max_epu32(ts_low, ts_low1);
+ cmp_ret = _mm_andnot_si128(_mm_cmpeq_epi32(max_ret,
ts_low), cmp_mask);
+
+ if (_mm_testz_si128(cmp_ret, cmp_mask)) {
+ inflection_point = 0;
+ } else {
+ inflection_point = 1;
+ while (shift > 1) {
+ shift = shift >> 1;
+ __m128i mask_low;
+ __m128i mask_high;
+ switch (shift) {
+ case 2:
+ mask_low = _mm_set_epi32(0, 0,
mask, mask);
+ mask_high = _mm_set_epi32(mask,
mask, 0, 0);
+ break;
+ case 1:
+ mask_low =
_mm_srli_si128(cmp_mask, 4);
+ mask_high =
_mm_slli_si128(cmp_mask, 4);
+ break;
+ }
+ ret = _mm_testz_si128(cmp_ret,
mask_low);
+ if (ret) {
+ ret = _mm_testz_si128(cmp_ret,
mask_high);
+ inflection_point += ret ? 0 :
shift;
+ cmp_mask = mask_high;
+ } else {
+ cmp_mask = mask_low;
+ }
+ }
+ }
+ } /* if() on Timestamp parsing */
flex_desc_to_olflags_v(rxq, descs, descs_bh, &rx_pkts[pos]);
#else
@@ -1011,10 +1124,50 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
/* C.4 calc available number of desc */
var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
nb_pkts_recd += var;
+
+#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
+ if (rxq->offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP) {
+ inflection_point = (inflection_point <= var) ?
inflection_point : 0;
+ switch (inflection_point) {
+ case 1:
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 0],
+ iavf_timestamp_dynfield_offset + 4,
uint32_t *) += 1;
+ case 2:
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 1],
+ iavf_timestamp_dynfield_offset + 4,
uint32_t *) += 1;
+ case 3:
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 2],
+ iavf_timestamp_dynfield_offset + 4,
uint32_t *) += 1;
+ case 4:
+ *RTE_MBUF_DYNFIELD(rx_pkts[pos + 3],
+ iavf_timestamp_dynfield_offset + 4,
uint32_t *) += 1;
+ rxq->phc_time += (uint64_t)1 << 32;
+ case 0:
+ break;
+ default:
+ PMD_DRV_LOG(ERR, "invalid inflection point for
rx timestamp");
+ break;
+ }
+
+ rxq->hw_time_update = rte_get_timer_cycles() /
(rte_get_timer_hz() / 1000);
+ }
+#pragma GCC diagnostic pop
+#endif
+
if (likely(var != IAVF_VPMD_DESCS_PER_LOOP))
break;
}
+#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
+#ifdef IAVF_RX_TS_OFFLOAD
+ if (nb_pkts_recd > 0 && (rxq->offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP))
+ rxq->phc_time = *RTE_MBUF_DYNFIELD(rx_pkts[nb_pkts_recd - 1],
+ iavf_timestamp_dynfield_offset,
uint32_t *);
+#endif
+#endif
+
/* Update our internal tail pointer */
rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
--
2.34.1
