* [PATCH 0/4] Remove SSE from some Intel drivers
@ 2025-08-25 12:35 Ciara Loftus
2025-08-25 12:35 ` [PATCH 1/4] net/i40e: remove SSE vector path Ciara Loftus
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Ciara Loftus @ 2025-08-25 12:35 UTC (permalink / raw)
To: dev; +Cc: Ciara Loftus
This patch removes the SSE Rx and Tx paths from the i40e, iavf and ice
driverss. Each of these drivers have faster vector paths (AVX2 and AVX-512)
which have feature parity with the SSE paths. In environments where AVX2 or
AVX-512 are not supported, the scalar path will still be used, which also
has feature parity.
This series is intended for the next-net-intel tree.
Ciara Loftus (4):
net/i40e: remove SSE vector path
net/iavf: remove SSE vector path
net/ice: remove SSE vector path
doc: add release note entry for SSE removal
doc/guides/rel_notes/release_25_11.rst | 5 +
drivers/net/intel/i40e/i40e_rxtx.c | 57 +-
drivers/net/intel/i40e/i40e_rxtx_vec_avx2.c | 26 +
drivers/net/intel/i40e/i40e_rxtx_vec_sse.c | 723 ----------
drivers/net/intel/i40e/meson.build | 1 -
drivers/net/intel/iavf/iavf_rxtx.c | 46 +-
drivers/net/intel/iavf/iavf_rxtx.h | 2 -
drivers/net/intel/iavf/iavf_rxtx_vec_avx2.c | 27 +
drivers/net/intel/iavf/iavf_rxtx_vec_sse.c | 1395 -------------------
drivers/net/intel/iavf/meson.build | 1 -
drivers/net/intel/ice/ice_rxtx.c | 43 +-
drivers/net/intel/ice/ice_rxtx.h | 6 -
drivers/net/intel/ice/ice_rxtx_vec_avx2.c | 29 +
drivers/net/intel/ice/ice_rxtx_vec_sse.c | 743 ----------
drivers/net/intel/ice/meson.build | 1 -
15 files changed, 158 insertions(+), 2947 deletions(-)
delete mode 100644 drivers/net/intel/i40e/i40e_rxtx_vec_sse.c
delete mode 100644 drivers/net/intel/iavf/iavf_rxtx_vec_sse.c
delete mode 100644 drivers/net/intel/ice/ice_rxtx_vec_sse.c
--
2.34.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/4] net/i40e: remove SSE vector path
2025-08-25 12:35 [PATCH 0/4] Remove SSE from some Intel drivers Ciara Loftus
@ 2025-08-25 12:35 ` Ciara Loftus
2025-08-25 12:35 ` [PATCH 2/4] net/iavf: " Ciara Loftus
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Ciara Loftus @ 2025-08-25 12:35 UTC (permalink / raw)
To: dev; +Cc: Ciara Loftus
Modern x86 systems all support AVX2, if not AVX-512, so the SSE path
is no longer widely used. This change will not result in any feature
loss, as in the rare cases where the SSE path would have been used in
the absence of AVX2 or AVX-512, the fallback scalar path will be used
which has feature parity with SSE.
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
drivers/net/intel/i40e/i40e_rxtx.c | 57 +-
drivers/net/intel/i40e/i40e_rxtx_vec_avx2.c | 26 +
drivers/net/intel/i40e/i40e_rxtx_vec_sse.c | 723 --------------------
drivers/net/intel/i40e/meson.build | 1 -
4 files changed, 62 insertions(+), 745 deletions(-)
delete mode 100644 drivers/net/intel/i40e/i40e_rxtx_vec_sse.c
diff --git a/drivers/net/intel/i40e/i40e_rxtx.c b/drivers/net/intel/i40e/i40e_rxtx.c
index 4c0d12c179..25d2f9753a 100644
--- a/drivers/net/intel/i40e/i40e_rxtx.c
+++ b/drivers/net/intel/i40e/i40e_rxtx.c
@@ -31,6 +31,10 @@
#include "i40e_ethdev.h"
#include "i40e_rxtx.h"
+#ifdef RTE_ARCH_X86
+#include "../common/rx_vec_x86.h"
+#endif
+
#define DEFAULT_TX_RS_THRESH 32
#define DEFAULT_TX_FREE_THRESH 32
@@ -1527,6 +1531,7 @@ i40e_xmit_pkts_simple(void *tx_queue,
return nb_tx;
}
+#ifndef RTE_ARCH_X86
static uint16_t
i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts)
@@ -1549,6 +1554,7 @@ i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
return nb_tx;
}
+#endif
/* Tx mbuf check */
static uint16_t
@@ -2637,11 +2643,13 @@ i40e_rx_queue_release_mbufs(struct ci_rx_queue *rxq)
{
uint16_t i;
+#ifndef RTE_ARCH_X86
/* SSE Vector driver has a different way of releasing mbufs. */
if (rxq->vector_rx) {
i40e_rx_queue_release_mbufs_vec(rxq);
return;
}
+#endif
if (!rxq->sw_ring) {
PMD_DRV_LOG(DEBUG, "Pointer to sw_ring is NULL");
@@ -3297,11 +3305,6 @@ static const struct ci_rx_path_info i40e_rx_path_infos[] = {
[I40E_RX_BULK_ALLOC] = { i40e_recv_pkts_bulk_alloc, "Scalar Bulk Alloc",
{I40E_RX_SCALAR_OFFLOADS, RTE_VECT_SIMD_DISABLED, {.bulk_alloc = true}}},
#ifdef RTE_ARCH_X86
- [I40E_RX_SSE] = { i40e_recv_pkts_vec, "Vector SSE",
- {I40E_RX_VECTOR_OFFLOADS, RTE_VECT_SIMD_128, {.bulk_alloc = true}}},
- [I40E_RX_SSE_SCATTERED] = { i40e_recv_scattered_pkts_vec, "Vector SSE Scattered",
- {I40E_RX_VECTOR_OFFLOADS, RTE_VECT_SIMD_128,
- {.scattered = true, .bulk_alloc = true}}},
[I40E_RX_AVX2] = { i40e_recv_pkts_vec_avx2, "Vector AVX2",
{I40E_RX_VECTOR_OFFLOADS, RTE_VECT_SIMD_256, {.bulk_alloc = true}}},
[I40E_RX_AVX2_SCATTERED] = { i40e_recv_scattered_pkts_vec_avx2, "Vector AVX2 Scattered",
@@ -3396,15 +3399,9 @@ i40e_set_rx_function(struct rte_eth_dev *dev)
/* Propagate information about RX function choice through all queues. */
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- vector_rx =
- (dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec ||
- dev->rx_pkt_burst == i40e_recv_pkts_vec ||
-#ifdef CC_AVX512_SUPPORT
- dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec_avx512 ||
- dev->rx_pkt_burst == i40e_recv_pkts_vec_avx512 ||
-#endif
- dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec_avx2 ||
- dev->rx_pkt_burst == i40e_recv_pkts_vec_avx2);
+ vector_rx = ad->rx_func_type != I40E_RX_DEFAULT &&
+ ad->rx_func_type != I40E_RX_SCATTERED &&
+ ad->rx_func_type != I40E_RX_BULK_ALLOC;
for (i = 0; i < dev->data->nb_rx_queues; i++) {
struct ci_rx_queue *rxq = dev->data->rx_queues[i];
@@ -3507,12 +3504,9 @@ i40e_set_tx_function(struct rte_eth_dev *dev)
dev->tx_pkt_burst = i40e_xmit_pkts;
#endif
} else {
- PMD_INIT_LOG(DEBUG, "Using %sVector Tx (port %d).",
- ad->tx_simd_width == RTE_VECT_SIMD_256 ? "avx2 " : "",
+ PMD_INIT_LOG(DEBUG, "Using avx2 Vector Tx (port %d).",
dev->data->port_id);
- dev->tx_pkt_burst = ad->tx_simd_width == RTE_VECT_SIMD_256 ?
- i40e_xmit_pkts_vec_avx2 :
- i40e_xmit_pkts_vec;
+ dev->tx_pkt_burst = i40e_xmit_pkts_vec_avx2;
dev->recycle_tx_mbufs_reuse = i40e_recycle_tx_mbufs_reuse_vec;
}
#else /* RTE_ARCH_X86 */
@@ -3550,7 +3544,6 @@ static const struct {
{ i40e_xmit_pkts_vec_avx512, "Vector AVX512" },
#endif
{ i40e_xmit_pkts_vec_avx2, "Vector AVX2" },
- { i40e_xmit_pkts_vec, "Vector SSE" },
#elif defined(RTE_ARCH_ARM64)
{ i40e_xmit_pkts_vec, "Vector Neon" },
#elif defined(RTE_ARCH_PPC_64)
@@ -3650,7 +3643,29 @@ i40e_set_default_pctype_table(struct rte_eth_dev *dev)
}
}
-#ifndef RTE_ARCH_X86
+#ifdef RTE_ARCH_X86
+enum rte_vect_max_simd
+i40e_get_max_simd_bitwidth(void)
+{
+ return ci_get_x86_max_simd_bitwidth();
+}
+
+uint16_t
+i40e_recv_pkts_vec(void __rte_unused * rx_queue,
+ struct rte_mbuf __rte_unused * *rx_pkts,
+ uint16_t __rte_unused nb_pkts)
+{
+ return 0;
+}
+
+uint16_t
+i40e_recv_scattered_pkts_vec(void __rte_unused * rx_queue,
+ struct rte_mbuf __rte_unused * *rx_pkts,
+ uint16_t __rte_unused nb_pkts)
+{
+ return 0;
+}
+#else
uint16_t
i40e_recv_pkts_vec_avx2(void __rte_unused *rx_queue,
struct rte_mbuf __rte_unused **rx_pkts,
diff --git a/drivers/net/intel/i40e/i40e_rxtx_vec_avx2.c b/drivers/net/intel/i40e/i40e_rxtx_vec_avx2.c
index aeb2756e7a..8822f4a9ac 100644
--- a/drivers/net/intel/i40e/i40e_rxtx_vec_avx2.c
+++ b/drivers/net/intel/i40e/i40e_rxtx_vec_avx2.c
@@ -820,3 +820,29 @@ i40e_xmit_pkts_vec_avx2(void *tx_queue, struct rte_mbuf **tx_pkts,
return nb_tx;
}
+
+void __rte_cold
+i40e_rx_queue_release_mbufs_vec(struct ci_rx_queue *rxq)
+{
+ _i40e_rx_queue_release_mbufs_vec(rxq);
+}
+
+int __rte_cold
+i40e_rxq_vec_setup(struct ci_rx_queue *rxq)
+{
+ rxq->vector_rx = 1;
+ rxq->mbuf_initializer = ci_rxq_mbuf_initializer(rxq->port_id);
+ return 0;
+}
+
+int __rte_cold
+i40e_txq_vec_setup(struct ci_tx_queue *txq __rte_unused)
+{
+ return 0;
+}
+
+int __rte_cold
+i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
+{
+ return i40e_rx_vec_dev_conf_condition_check_default(dev);
+}
diff --git a/drivers/net/intel/i40e/i40e_rxtx_vec_sse.c b/drivers/net/intel/i40e/i40e_rxtx_vec_sse.c
deleted file mode 100644
index c035408dcc..0000000000
--- a/drivers/net/intel/i40e/i40e_rxtx_vec_sse.c
+++ /dev/null
@@ -1,723 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2015 Intel Corporation
- */
-
-#include <stdint.h>
-#include <ethdev_driver.h>
-#include <rte_malloc.h>
-
-#include "base/i40e_prototype.h"
-#include "base/i40e_type.h"
-#include "i40e_ethdev.h"
-#include "i40e_rxtx.h"
-#include "i40e_rxtx_vec_common.h"
-
-#include "../common/rx_vec_x86.h"
-
-#include <rte_vect.h>
-
-static inline void
-i40e_rxq_rearm(struct ci_rx_queue *rxq)
-{
- ci_rxq_rearm(rxq, CI_RX_VEC_LEVEL_SSE);
-}
-
-#ifndef RTE_NET_INTEL_USE_16BYTE_DESC
-/* SSE version of FDIR mark extraction for 4 32B descriptors at a time */
-static inline __m128i
-descs_to_fdir_32b(volatile union ci_rx_desc *rxdp, struct rte_mbuf **rx_pkt)
-{
- /* 32B descriptors: Load 2nd half of descriptors for FDIR ID data */
- __m128i desc0_qw23, desc1_qw23, desc2_qw23, desc3_qw23;
- desc0_qw23 = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, &(rxdp + 0)->wb.qword2));
- desc1_qw23 = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, &(rxdp + 1)->wb.qword2));
- desc2_qw23 = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, &(rxdp + 2)->wb.qword2));
- desc3_qw23 = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, &(rxdp + 3)->wb.qword2));
-
- /* FDIR ID data: move last u32 of each desc to 4 u32 lanes */
- __m128i v_unpack_01, v_unpack_23;
- v_unpack_01 = _mm_unpackhi_epi32(desc0_qw23, desc1_qw23);
- v_unpack_23 = _mm_unpackhi_epi32(desc2_qw23, desc3_qw23);
- __m128i v_fdir_ids = _mm_unpackhi_epi64(v_unpack_01, v_unpack_23);
-
- /* Extended Status: extract from each lower 32 bits, to u32 lanes */
- v_unpack_01 = _mm_unpacklo_epi32(desc0_qw23, desc1_qw23);
- v_unpack_23 = _mm_unpacklo_epi32(desc2_qw23, desc3_qw23);
- __m128i v_flt_status = _mm_unpacklo_epi64(v_unpack_01, v_unpack_23);
-
- /* Shift u32 left and right to "mask away" bits not required.
- * Data required is 4:5 (zero based), so left shift by 26 (32-6)
- * and then right shift by 30 (32 - 2 bits required).
- */
- v_flt_status = _mm_slli_epi32(v_flt_status, 26);
- v_flt_status = _mm_srli_epi32(v_flt_status, 30);
-
- /* Generate constant 1 in all u32 lanes and compare */
- RTE_BUILD_BUG_ON(I40E_RX_DESC_EXT_STATUS_FLEXBH_FD_ID != 1);
- __m128i v_zeros = _mm_setzero_si128();
- __m128i v_ffff = _mm_cmpeq_epi32(v_zeros, v_zeros);
- __m128i v_u32_one = _mm_srli_epi32(v_ffff, 31);
-
- /* per desc mask, bits set if FDIR ID is valid */
- __m128i v_fd_id_mask = _mm_cmpeq_epi32(v_flt_status, v_u32_one);
-
- /* Mask ID data to zero if the FD_ID bit not set in desc */
- v_fdir_ids = _mm_and_si128(v_fdir_ids, v_fd_id_mask);
-
- /* Extract and store as u32. No advantage to combining into SSE
- * stores, there are no surrounding stores to around fdir.hi
- */
- rx_pkt[0]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 0);
- rx_pkt[1]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 1);
- rx_pkt[2]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 2);
- rx_pkt[3]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 3);
-
- /* convert fdir_id_mask into a single bit, then shift as required for
- * correct location in the mbuf->olflags
- */
- RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR_ID != (1 << I40E_FDIR_ID_BIT_SHIFT));
- v_fd_id_mask = _mm_srli_epi32(v_fd_id_mask, 31);
- v_fd_id_mask = _mm_slli_epi32(v_fd_id_mask, I40E_FDIR_ID_BIT_SHIFT);
-
- /* The returned value must be combined into each mbuf. This is already
- * being done for RSS and VLAN mbuf olflags, so return bits to OR in.
- */
- return v_fd_id_mask;
-}
-
-#else /* 32 or 16B FDIR ID handling */
-
-/* Handle 16B descriptor FDIR ID flag setting based on FLM. See scalar driver
- * for scalar implementation of the same functionality.
- */
-static inline __m128i
-descs_to_fdir_16b(__m128i fltstat, __m128i descs[4], struct rte_mbuf **rx_pkt)
-{
- /* unpack filter-status data from descriptors */
- __m128i v_tmp_01 = _mm_unpacklo_epi32(descs[0], descs[1]);
- __m128i v_tmp_23 = _mm_unpacklo_epi32(descs[2], descs[3]);
- __m128i v_fdir_ids = _mm_unpackhi_epi64(v_tmp_01, v_tmp_23);
-
- /* Generate one bit in each u32 lane */
- __m128i v_zeros = _mm_setzero_si128();
- __m128i v_ffff = _mm_cmpeq_epi32(v_zeros, v_zeros);
- __m128i v_111_mask = _mm_srli_epi32(v_ffff, 29);
- __m128i v_11_mask = _mm_srli_epi32(v_ffff, 30);
-
- /* Top lane ones mask for FDIR isolation */
- __m128i v_desc_fdir_mask = _mm_insert_epi32(v_zeros, UINT32_MAX, 1);
-
- /* Compare and mask away FDIR ID data if bit not set */
- __m128i v_u32_bits = _mm_and_si128(v_111_mask, fltstat);
- __m128i v_fdir_id_mask = _mm_cmpeq_epi32(v_u32_bits, v_11_mask);
- v_fdir_ids = _mm_and_si128(v_fdir_id_mask, v_fdir_ids);
-
- /* Store data to fdir.hi in mbuf */
- rx_pkt[0]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 0);
- rx_pkt[1]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 1);
- rx_pkt[2]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 2);
- rx_pkt[3]->hash.fdir.hi = _mm_extract_epi32(v_fdir_ids, 3);
-
- /* Move fdir_id_mask to correct lane, blend RSS to zero on hits */
- __m128i v_desc3_shift = _mm_alignr_epi8(v_zeros, v_fdir_id_mask, 8);
- __m128i v_desc3_mask = _mm_and_si128(v_desc_fdir_mask, v_desc3_shift);
- descs[3] = _mm_blendv_epi8(descs[3], _mm_setzero_si128(), v_desc3_mask);
-
- __m128i v_desc2_shift = _mm_alignr_epi8(v_zeros, v_fdir_id_mask, 4);
- __m128i v_desc2_mask = _mm_and_si128(v_desc_fdir_mask, v_desc2_shift);
- descs[2] = _mm_blendv_epi8(descs[2], _mm_setzero_si128(), v_desc2_mask);
-
- __m128i v_desc1_shift = v_fdir_id_mask;
- __m128i v_desc1_mask = _mm_and_si128(v_desc_fdir_mask, v_desc1_shift);
- descs[1] = _mm_blendv_epi8(descs[1], _mm_setzero_si128(), v_desc1_mask);
-
- __m128i v_desc0_shift = _mm_alignr_epi8(v_fdir_id_mask, v_zeros, 12);
- __m128i v_desc0_mask = _mm_and_si128(v_desc_fdir_mask, v_desc0_shift);
- descs[0] = _mm_blendv_epi8(descs[0], _mm_setzero_si128(), v_desc0_mask);
-
- /* Shift to 1 or 0 bit per u32 lane, then to RTE_MBUF_F_RX_FDIR_ID offset */
- RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR_ID != (1 << I40E_FDIR_ID_BIT_SHIFT));
- __m128i v_mask_one_bit = _mm_srli_epi32(v_fdir_id_mask, 31);
- return _mm_slli_epi32(v_mask_one_bit, I40E_FDIR_ID_BIT_SHIFT);
-}
-#endif
-
-static inline void
-desc_to_olflags_v(struct ci_rx_queue *rxq, volatile union ci_rx_desc *rxdp,
- __m128i descs[4], struct rte_mbuf **rx_pkts)
-{
- const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
- __m128i rearm0, rearm1, rearm2, rearm3;
-
- __m128i vlan0, vlan1, rss, l3_l4e;
-
- /* mask everything except RSS, flow director and VLAN flags
- * bit2 is for VLAN tag, bit11 for flow director indication
- * bit13:12 for RSS indication.
- */
- const __m128i rss_vlan_msk = _mm_set_epi32(
- 0x1c03804, 0x1c03804, 0x1c03804, 0x1c03804);
-
- const __m128i cksum_mask = _mm_set_epi32(
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
-
- /* map rss and vlan type to rss hash and vlan flag */
- const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
- 0, 0, 0, 0);
-
- const __m128i rss_flags = _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_RSS_HASH, 0, 0,
- 0, 0, RTE_MBUF_F_RX_FDIR, 0);
-
- const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
- /* shift right 1 bit to make sure it not exceed 255 */
- (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1);
-
- /* Unpack "status" from quadword 1, bits 0:32 */
- vlan0 = _mm_unpackhi_epi32(descs[0], descs[1]);
- vlan1 = _mm_unpackhi_epi32(descs[2], descs[3]);
- vlan0 = _mm_unpacklo_epi64(vlan0, vlan1);
-
- vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
- vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
-
- const __m128i desc_fltstat = _mm_srli_epi32(vlan1, 11);
- rss = _mm_shuffle_epi8(rss_flags, desc_fltstat);
-
- l3_l4e = _mm_srli_epi32(vlan1, 22);
- l3_l4e = _mm_shuffle_epi8(l3_l4e_flags, l3_l4e);
- /* then we shift left 1 bit */
- l3_l4e = _mm_slli_epi32(l3_l4e, 1);
- /* we need to mask out the redundant bits */
- l3_l4e = _mm_and_si128(l3_l4e, cksum_mask);
-
- vlan0 = _mm_or_si128(vlan0, rss);
- vlan0 = _mm_or_si128(vlan0, l3_l4e);
-
- /* Extract FDIR ID only if FDIR is enabled to avoid useless work */
- if (rxq->fdir_enabled) {
-#ifndef RTE_NET_INTEL_USE_16BYTE_DESC
- __m128i v_fdir_ol_flags = descs_to_fdir_32b(rxdp, rx_pkts);
-#else
- (void)rxdp; /* rxdp not required for 16B desc mode */
- __m128i v_fdir_ol_flags = descs_to_fdir_16b(desc_fltstat,
- descs, rx_pkts);
-#endif
- /* OR in ol_flag bits after descriptor specific extraction */
- vlan0 = _mm_or_si128(vlan0, v_fdir_ol_flags);
- }
-
- /*
- * At this point, we have the 4 sets of flags in the low 16-bits
- * of each 32-bit value in vlan0.
- * We want to extract these, and merge them with the mbuf init data
- * so we can do a single 16-byte write to the mbuf to set the flags
- * and all the other initialization fields. Extracting the
- * appropriate flags means that we have to do a shift and blend for
- * each mbuf before we do the write.
- */
- rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 8), 0x10);
- rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 4), 0x10);
- rearm2 = _mm_blend_epi16(mbuf_init, vlan0, 0x10);
- rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(vlan0, 4), 0x10);
-
- /* write the rearm data and the olflags in one write */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
- offsetof(struct rte_mbuf, rearm_data) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
- RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
- _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
- _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
- _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
- _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
-}
-
-#define PKTLEN_SHIFT 10
-
-static inline void
-desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
- uint32_t *ptype_tbl)
-{
- __m128i ptype0 = _mm_unpackhi_epi64(descs[0], descs[1]);
- __m128i ptype1 = _mm_unpackhi_epi64(descs[2], descs[3]);
-
- ptype0 = _mm_srli_epi64(ptype0, 30);
- ptype1 = _mm_srli_epi64(ptype1, 30);
-
- rx_pkts[0]->packet_type = ptype_tbl[_mm_extract_epi8(ptype0, 0)];
- rx_pkts[1]->packet_type = ptype_tbl[_mm_extract_epi8(ptype0, 8)];
- rx_pkts[2]->packet_type = ptype_tbl[_mm_extract_epi8(ptype1, 0)];
- rx_pkts[3]->packet_type = ptype_tbl[_mm_extract_epi8(ptype1, 8)];
-}
-
-/**
- * vPMD raw receive routine, only accept(nb_pkts >= I40E_VPMD_DESCS_PER_LOOP)
- *
- * Notice:
- * - nb_pkts < I40E_VPMD_DESCS_PER_LOOP, just return no packet
- * - floor align nb_pkts to a I40E_VPMD_DESCS_PER_LOOP power-of-two
- */
-static inline uint16_t
-_recv_raw_pkts_vec(struct ci_rx_queue *rxq, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts, uint8_t *split_packet)
-{
- volatile union ci_rx_desc *rxdp;
- struct ci_rx_entry *sw_ring;
- uint16_t nb_pkts_recd;
- int pos;
- uint64_t var;
- __m128i shuf_msk;
- uint32_t *ptype_tbl = rxq->i40e_vsi->adapter->ptype_tbl;
-
- __m128i crc_adjust = _mm_set_epi16(
- 0, 0, 0, /* ignore non-length fields */
- -rxq->crc_len, /* sub crc on data_len */
- 0, /* ignore high-16bits of pkt_len */
- -rxq->crc_len, /* sub crc on pkt_len */
- 0, 0 /* ignore pkt_type field */
- );
- /*
- * compile-time check the above crc_adjust layout is correct.
- * NOTE: the first field (lowest address) is given last in set_epi16
- * call above.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
- __m128i dd_check, eop_check;
-
- /* nb_pkts has to be floor-aligned to I40E_VPMD_DESCS_PER_LOOP */
- nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, I40E_VPMD_DESCS_PER_LOOP);
-
- /* Just the act of getting into the function from the application is
- * going to cost about 7 cycles
- */
- rxdp = rxq->rx_ring + rxq->rx_tail;
-
- rte_prefetch0(rxdp);
-
- /* See if we need to rearm the RX queue - gives the prefetch a bit
- * of time to act
- */
- if (rxq->rxrearm_nb > I40E_VPMD_RXQ_REARM_THRESH)
- i40e_rxq_rearm(rxq);
-
- /* Before we start moving massive data around, check to see if
- * there is actually a packet available
- */
- if (!(rxdp->wb.qword1.status_error_len &
- rte_cpu_to_le_32(1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
- return 0;
-
- /* 4 packets DD mask */
- dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
-
- /* 4 packets EOP mask */
- eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
-
- /* mask to shuffle from desc. to mbuf */
- shuf_msk = _mm_set_epi8(
- 7, 6, 5, 4, /* octet 4~7, 32bits rss */
- 3, 2, /* octet 2~3, low 16 bits vlan_macip */
- 15, 14, /* octet 15~14, 16 bits data_len */
- 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
- 15, 14, /* octet 15~14, low 16 bits pkt_len */
- 0xFF, 0xFF, /* pkt_type set as unknown */
- 0xFF, 0xFF /*pkt_type set as unknown */
- );
- /*
- * Compile-time verify the shuffle mask
- * NOTE: some field positions already verified above, but duplicated
- * here for completeness in case of future modifications.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
-
- /* Cache is empty -> need to scan the buffer rings, but first move
- * the next 'n' mbufs into the cache
- */
- sw_ring = &rxq->sw_ring[rxq->rx_tail];
-
- /* A. load 4 packet in one loop
- * [A*. mask out 4 unused dirty field in desc]
- * B. copy 4 mbuf point from swring to rx_pkts
- * C. calc the number of DD bits among the 4 packets
- * [C*. extract the end-of-packet bit, if requested]
- * D. fill info. from desc to mbuf
- */
-
- for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
- pos += I40E_VPMD_DESCS_PER_LOOP,
- rxdp += I40E_VPMD_DESCS_PER_LOOP) {
- __m128i descs[I40E_VPMD_DESCS_PER_LOOP];
- __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
- __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
- /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
- __m128i mbp1;
-#if defined(RTE_ARCH_X86_64)
- __m128i mbp2;
-#endif
-
- /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
- mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
- /* Read desc statuses backwards to avoid race condition */
- /* A.1 load desc[3] */
- descs[3] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 3));
- rte_compiler_barrier();
-
- /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
-
-#if defined(RTE_ARCH_X86_64)
- /* B.1 load 2 64 bit mbuf points */
- mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos+2]);
-#endif
-
- /* A.1 load desc[2-0] */
- descs[2] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 2));
- rte_compiler_barrier();
- descs[1] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 1));
- rte_compiler_barrier();
- descs[0] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp));
-
-#if defined(RTE_ARCH_X86_64)
- /* B.2 copy 2 mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos+2], mbp2);
-#endif
-
- if (split_packet) {
- rte_mbuf_prefetch_part2(rx_pkts[pos]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
- }
-
- /* avoid compiler reorder optimization */
- rte_compiler_barrier();
-
- /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
- const __m128i len3 = _mm_slli_epi32(descs[3], PKTLEN_SHIFT);
- const __m128i len2 = _mm_slli_epi32(descs[2], PKTLEN_SHIFT);
-
- /* merge the now-aligned packet length fields back in */
- descs[3] = _mm_blend_epi16(descs[3], len3, 0x80);
- descs[2] = _mm_blend_epi16(descs[2], len2, 0x80);
-
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
-
- desc_to_olflags_v(rxq, rxdp, descs, &rx_pkts[pos]);
-
- /* D.1 pkt 3,4 convert format from desc to pktmbuf */
- pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
- pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
-
- /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
- pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
- pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
-
- /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
- const __m128i len1 = _mm_slli_epi32(descs[1], PKTLEN_SHIFT);
- const __m128i len0 = _mm_slli_epi32(descs[0], PKTLEN_SHIFT);
-
- /* merge the now-aligned packet length fields back in */
- descs[1] = _mm_blend_epi16(descs[1], len1, 0x80);
- descs[0] = _mm_blend_epi16(descs[0], len0, 0x80);
-
- /* D.1 pkt 1,2 convert format from desc to pktmbuf */
- pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
- pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
-
- /* C.2 get 4 pkts staterr value */
- zero = _mm_xor_si128(dd_check, dd_check);
- staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
-
- /* D.3 copy final 3,4 data to rx_pkts */
- _mm_storeu_si128((void *)&rx_pkts[pos+3]->rx_descriptor_fields1,
- pkt_mb4);
- _mm_storeu_si128((void *)&rx_pkts[pos+2]->rx_descriptor_fields1,
- pkt_mb3);
-
- /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
- pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
- pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
-
- /* C* extract and record EOP bit */
- if (split_packet) {
- __m128i eop_shuf_mask = _mm_set_epi8(
- 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF,
- 0x04, 0x0C, 0x00, 0x08
- );
-
- /* and with mask to extract bits, flipping 1-0 */
- __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
- /* the staterr values are not in order, as the count
- * of dd bits doesn't care. However, for end of
- * packet tracking, we do care, so shuffle. This also
- * compresses the 32-bit values to 8-bit
- */
- eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
- /* store the resulting 32-bit value */
- *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
- split_packet += I40E_VPMD_DESCS_PER_LOOP;
- }
-
- /* C.3 calc available number of desc */
- staterr = _mm_and_si128(staterr, dd_check);
- staterr = _mm_packs_epi32(staterr, zero);
-
- /* D.3 copy final 1,2 data to rx_pkts */
- _mm_storeu_si128((void *)&rx_pkts[pos+1]->rx_descriptor_fields1,
- pkt_mb2);
- _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
- pkt_mb1);
- desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
- /* C.4 calc available number of desc */
- var = rte_popcount64(_mm_cvtsi128_si64(staterr));
- nb_pkts_recd += var;
- if (likely(var != I40E_VPMD_DESCS_PER_LOOP))
- break;
- }
-
- /* 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));
- rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
-
- return nb_pkts_recd;
-}
-
- /*
- * Notice:
- * - nb_pkts < I40E_VPMD_DESCS_PER_LOOP, just return no packet
- */
-uint16_t
-i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
-}
-
-/**
- * vPMD receive routine that reassembles single burst of 32 scattered packets
- *
- * Notice:
- * - nb_pkts < I40E_VPMD_DESCS_PER_LOOP, just return no packet
- */
-static uint16_t
-i40e_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
-
- struct ci_rx_queue *rxq = rx_queue;
- uint8_t split_flags[I40E_VPMD_RX_BURST] = {0};
-
- /* get some new buffers */
- uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
- split_flags);
- if (nb_bufs == 0)
- return 0;
-
- /* happy day case, full burst + no packets to be joined */
- const uint64_t *split_fl64 = (uint64_t *)split_flags;
-
- if (rxq->pkt_first_seg == NULL &&
- split_fl64[0] == 0 && split_fl64[1] == 0 &&
- split_fl64[2] == 0 && split_fl64[3] == 0)
- return nb_bufs;
-
- /* reassemble any packets that need reassembly*/
- unsigned i = 0;
-
- if (rxq->pkt_first_seg == NULL) {
- /* find the first split flag, and only reassemble then*/
- while (i < nb_bufs && !split_flags[i])
- i++;
- if (i == nb_bufs)
- return nb_bufs;
- rxq->pkt_first_seg = rx_pkts[i];
- }
- return i + ci_rx_reassemble_packets(&rx_pkts[i], nb_bufs - i, &split_flags[i],
- &rxq->pkt_first_seg, &rxq->pkt_last_seg, rxq->crc_len);
-}
-
-/**
- * vPMD receive routine that reassembles scattered packets.
- */
-uint16_t
-i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- uint16_t retval = 0;
-
- while (nb_pkts > I40E_VPMD_RX_BURST) {
- uint16_t burst;
-
- burst = i40e_recv_scattered_burst_vec(rx_queue,
- rx_pkts + retval,
- I40E_VPMD_RX_BURST);
- retval += burst;
- nb_pkts -= burst;
- if (burst < I40E_VPMD_RX_BURST)
- return retval;
- }
-
- return retval + i40e_recv_scattered_burst_vec(rx_queue,
- rx_pkts + retval,
- nb_pkts);
-}
-
-static inline void
-vtx1(volatile struct i40e_tx_desc *txdp,
- struct rte_mbuf *pkt, uint64_t flags)
-{
- uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA |
- ((uint64_t)flags << I40E_TXD_QW1_CMD_SHIFT) |
- ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
-
- __m128i descriptor = _mm_set_epi64x(high_qw,
- pkt->buf_iova + pkt->data_off);
- _mm_store_si128(RTE_CAST_PTR(__m128i *, txdp), descriptor);
-}
-
-static inline void
-vtx(volatile struct i40e_tx_desc *txdp,
- struct rte_mbuf **pkt, uint16_t nb_pkts, uint64_t flags)
-{
- int i;
-
- for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
- vtx1(txdp, *pkt, flags);
-}
-
-uint16_t
-i40e_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
- uint16_t nb_pkts)
-{
- struct ci_tx_queue *txq = (struct ci_tx_queue *)tx_queue;
- volatile struct i40e_tx_desc *txdp;
- struct ci_tx_entry_vec *txep;
- uint16_t n, nb_commit, tx_id;
- uint64_t flags = I40E_TD_CMD;
- uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD;
- int i;
-
- if (txq->nb_tx_free < txq->tx_free_thresh)
- ci_tx_free_bufs_vec(txq, i40e_tx_desc_done, false);
-
- nb_commit = nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
- if (unlikely(nb_pkts == 0))
- return 0;
-
- tx_id = txq->tx_tail;
- txdp = &txq->i40e_tx_ring[tx_id];
- txep = &txq->sw_ring_vec[tx_id];
-
- txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
-
- n = (uint16_t)(txq->nb_tx_desc - tx_id);
- if (nb_commit >= n) {
- ci_tx_backlog_entry_vec(txep, tx_pkts, n);
-
- for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
- vtx1(txdp, *tx_pkts, flags);
-
- vtx1(txdp, *tx_pkts++, rs);
-
- nb_commit = (uint16_t)(nb_commit - n);
-
- tx_id = 0;
- txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
-
- /* avoid reach the end of ring */
- txdp = &txq->i40e_tx_ring[tx_id];
- txep = &txq->sw_ring_vec[tx_id];
- }
-
- ci_tx_backlog_entry_vec(txep, tx_pkts, nb_commit);
-
- vtx(txdp, tx_pkts, nb_commit, flags);
-
- tx_id = (uint16_t)(tx_id + nb_commit);
- if (tx_id > txq->tx_next_rs) {
- txq->i40e_tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
- rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
- I40E_TXD_QW1_CMD_SHIFT);
- txq->tx_next_rs =
- (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
- }
-
- txq->tx_tail = tx_id;
-
- I40E_PCI_REG_WC_WRITE(txq->qtx_tail, txq->tx_tail);
-
- return nb_pkts;
-}
-
-void __rte_cold
-i40e_rx_queue_release_mbufs_vec(struct ci_rx_queue *rxq)
-{
- _i40e_rx_queue_release_mbufs_vec(rxq);
-}
-
-int __rte_cold
-i40e_rxq_vec_setup(struct ci_rx_queue *rxq)
-{
- rxq->vector_rx = 1;
- rxq->mbuf_initializer = ci_rxq_mbuf_initializer(rxq->port_id);
- return 0;
-}
-
-int __rte_cold
-i40e_txq_vec_setup(struct ci_tx_queue *txq __rte_unused)
-{
- return 0;
-}
-
-int __rte_cold
-i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
-{
- return i40e_rx_vec_dev_conf_condition_check_default(dev);
-}
-
-enum rte_vect_max_simd
-i40e_get_max_simd_bitwidth(void)
-{
- return ci_get_x86_max_simd_bitwidth();
-}
diff --git a/drivers/net/intel/i40e/meson.build b/drivers/net/intel/i40e/meson.build
index 49e7f899e6..bccae1ffc1 100644
--- a/drivers/net/intel/i40e/meson.build
+++ b/drivers/net/intel/i40e/meson.build
@@ -37,7 +37,6 @@ testpmd_sources = files('i40e_testpmd.c')
deps += ['hash']
if arch_subdir == 'x86'
- sources += files('i40e_rxtx_vec_sse.c')
sources_avx2 += files('i40e_rxtx_vec_avx2.c')
sources_avx512 += files('i40e_rxtx_vec_avx512.c')
elif arch_subdir == 'ppc'
--
2.34.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/4] net/iavf: remove SSE vector path
2025-08-25 12:35 [PATCH 0/4] Remove SSE from some Intel drivers Ciara Loftus
2025-08-25 12:35 ` [PATCH 1/4] net/i40e: remove SSE vector path Ciara Loftus
@ 2025-08-25 12:35 ` Ciara Loftus
2025-08-25 12:35 ` [PATCH 3/4] net/ice: " Ciara Loftus
2025-08-25 12:35 ` [PATCH 4/4] doc: add release note entry for SSE removal Ciara Loftus
3 siblings, 0 replies; 6+ messages in thread
From: Ciara Loftus @ 2025-08-25 12:35 UTC (permalink / raw)
To: dev; +Cc: Ciara Loftus
Modern x86 systems all support AVX2, if not AVX-512, so the SSE path
is no longer widely used. This change will not result in any feature
loss, as in the rare cases where the SSE path would have been used in
the absence of AVX2 or AVX-512, the fallback scalar path will be used
which has feature parity with SSE.
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
drivers/net/intel/iavf/iavf_rxtx.c | 46 +-
drivers/net/intel/iavf/iavf_rxtx.h | 2 -
drivers/net/intel/iavf/iavf_rxtx_vec_avx2.c | 27 +
drivers/net/intel/iavf/iavf_rxtx_vec_sse.c | 1395 -------------------
drivers/net/intel/iavf/meson.build | 1 -
5 files changed, 42 insertions(+), 1429 deletions(-)
delete mode 100644 drivers/net/intel/iavf/iavf_rxtx_vec_sse.c
diff --git a/drivers/net/intel/iavf/iavf_rxtx.c b/drivers/net/intel/iavf/iavf_rxtx.c
index ab44558a85..7194a2646f 100644
--- a/drivers/net/intel/iavf/iavf_rxtx.c
+++ b/drivers/net/intel/iavf/iavf_rxtx.c
@@ -34,6 +34,10 @@
#include "iavf_ipsec_crypto.h"
#include "rte_pmd_iavf.h"
+#ifdef RTE_ARCH_X86
+#include "../common/rx_vec_x86.h"
+#endif
+
#define GRE_CHECKSUM_PRESENT 0x8000
#define GRE_KEY_PRESENT 0x2000
#define GRE_SEQUENCE_PRESENT 0x1000
@@ -384,9 +388,6 @@ release_rxq_mbufs(struct ci_rx_queue *rxq)
static const
struct iavf_rxq_ops iavf_rxq_release_mbufs_ops[] = {
[IAVF_REL_MBUFS_DEFAULT].release_mbufs = release_rxq_mbufs,
-#ifdef RTE_ARCH_X86
- [IAVF_REL_MBUFS_SSE_VEC].release_mbufs = iavf_rx_queue_release_mbufs_sse,
-#endif
#ifdef RTE_ARCH_ARM64
[IAVF_REL_MBUFS_NEON_VEC].release_mbufs = iavf_rx_queue_release_mbufs_neon,
#endif
@@ -3735,19 +3736,6 @@ static const struct ci_rx_path_info iavf_rx_path_infos[] = {
[IAVF_RX_BULK_ALLOC] = {iavf_recv_pkts_bulk_alloc, "Scalar Bulk Alloc",
{IAVF_RX_SCALAR_OFFLOADS, RTE_VECT_SIMD_DISABLED, {.bulk_alloc = true}}},
#ifdef RTE_ARCH_X86
- [IAVF_RX_SSE] = {iavf_recv_pkts_vec, "Vector SSE",
- {IAVF_RX_VECTOR_OFFLOAD_OFFLOADS, RTE_VECT_SIMD_128, {.bulk_alloc = true}}},
- [IAVF_RX_SSE_SCATTERED] = {iavf_recv_scattered_pkts_vec, "Vector Scattered SSE",
- {IAVF_RX_VECTOR_OFFLOADS | RTE_ETH_RX_OFFLOAD_SCATTER, RTE_VECT_SIMD_128,
- {.scattered = true, .bulk_alloc = true}}},
- [IAVF_RX_SSE_FLEX_RXD] = {iavf_recv_pkts_vec_flex_rxd, "Vector Flex SSE",
- {IAVF_RX_VECTOR_OFFLOAD_FLEX_OFFLOADS, RTE_VECT_SIMD_128,
- {.flex_desc = true, .bulk_alloc = true}}},
- [IAVF_RX_SSE_SCATTERED_FLEX_RXD] = {
- iavf_recv_scattered_pkts_vec_flex_rxd, "Vector Scattered SSE Flex",
- {IAVF_RX_VECTOR_OFFLOAD_FLEX_OFFLOADS | RTE_ETH_RX_OFFLOAD_SCATTER,
- RTE_VECT_SIMD_128,
- {.scattered = true, .flex_desc = true, .bulk_alloc = true}}},
[IAVF_RX_AVX2] = {iavf_recv_pkts_vec_avx2, "Vector AVX2",
{IAVF_RX_VECTOR_OFFLOADS, RTE_VECT_SIMD_256, {.bulk_alloc = true}}},
[IAVF_RX_AVX2_SCATTERED] = {iavf_recv_scattered_pkts_vec_avx2, "Vector Scattered AVX2",
@@ -3838,7 +3826,6 @@ static const struct {
[IAVF_TX_DISABLED] = {iavf_xmit_pkts_no_poll, "Disabled"},
[IAVF_TX_DEFAULT] = {iavf_xmit_pkts, "Scalar"},
#ifdef RTE_ARCH_X86
- [IAVF_TX_SSE] = {iavf_xmit_pkts_vec, "Vector SSE"},
[IAVF_TX_AVX2] = {iavf_xmit_pkts_vec_avx2, "Vector AVX2"},
[IAVF_TX_AVX2_OFFLOAD] = {iavf_xmit_pkts_vec_avx2_offload,
"Vector AVX2 Offload"},
@@ -3990,6 +3977,14 @@ iavf_xmit_pkts_check(void *tx_queue, struct rte_mbuf **tx_pkts,
return iavf_tx_pkt_burst_ops[tx_func_type].pkt_burst(tx_queue, tx_pkts, good_pkts);
}
+#ifdef RTE_ARCH_X86
+enum rte_vect_max_simd
+iavf_get_max_simd_bitwidth(void)
+{
+ return ci_get_x86_max_simd_bitwidth();
+}
+#endif
+
/* choose rx function*/
void
iavf_set_rx_function(struct rte_eth_dev *dev)
@@ -4058,14 +4053,13 @@ iavf_set_tx_function(struct rte_eth_dev *dev)
{
struct iavf_adapter *adapter =
IAVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
- enum iavf_tx_func_type tx_func_type;
+ enum iavf_tx_func_type tx_func_type = IAVF_TX_DEFAULT;
int mbuf_check = adapter->devargs.mbuf_check;
int no_poll_on_link_down = adapter->devargs.no_poll_on_link_down;
#ifdef RTE_ARCH_X86
struct ci_tx_queue *txq;
int i;
int check_ret;
- bool use_sse = false;
bool use_avx2 = false;
bool use_avx512 = false;
enum rte_vect_max_simd tx_simd_path = iavf_get_max_simd_bitwidth();
@@ -4073,23 +4067,13 @@ iavf_set_tx_function(struct rte_eth_dev *dev)
check_ret = iavf_tx_vec_dev_check(dev);
if (check_ret >= 0 &&
- rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128) {
- /* SSE not support offload path yet. */
- if (check_ret == IAVF_VECTOR_PATH) {
- use_sse = true;
- }
-
+ rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_256) {
use_avx2 = tx_simd_path == RTE_VECT_SIMD_256;
use_avx512 = tx_simd_path == RTE_VECT_SIMD_512;
- if (!use_sse && !use_avx2 && !use_avx512)
+ if (!use_avx2 && !use_avx512)
goto normal;
- if (use_sse) {
- PMD_DRV_LOG(DEBUG, "Using Vector Tx (port %d).",
- dev->data->port_id);
- tx_func_type = IAVF_TX_SSE;
- }
if (use_avx2) {
if (check_ret == IAVF_VECTOR_PATH) {
tx_func_type = IAVF_TX_AVX2;
diff --git a/drivers/net/intel/iavf/iavf_rxtx.h b/drivers/net/intel/iavf/iavf_rxtx.h
index 723c30d05b..123d477a08 100644
--- a/drivers/net/intel/iavf/iavf_rxtx.h
+++ b/drivers/net/intel/iavf/iavf_rxtx.h
@@ -640,8 +640,6 @@ uint8_t iavf_proto_xtr_type_to_rxdid(uint8_t xtr_type);
void iavf_set_default_ptype_table(struct rte_eth_dev *dev);
void iavf_tx_queue_release_mbufs_avx512(struct ci_tx_queue *txq);
-void iavf_rx_queue_release_mbufs_sse(struct ci_rx_queue *rxq);
-void iavf_tx_queue_release_mbufs_sse(struct ci_tx_queue *txq);
void iavf_rx_queue_release_mbufs_neon(struct ci_rx_queue *rxq);
enum rte_vect_max_simd iavf_get_max_simd_bitwidth(void);
diff --git a/drivers/net/intel/iavf/iavf_rxtx_vec_avx2.c b/drivers/net/intel/iavf/iavf_rxtx_vec_avx2.c
index e417257086..5f09e3ec37 100644
--- a/drivers/net/intel/iavf/iavf_rxtx_vec_avx2.c
+++ b/drivers/net/intel/iavf/iavf_rxtx_vec_avx2.c
@@ -1810,3 +1810,30 @@ iavf_xmit_pkts_vec_avx2_offload(void *tx_queue, struct rte_mbuf **tx_pkts,
{
return iavf_xmit_pkts_vec_avx2_common(tx_queue, tx_pkts, nb_pkts, true);
}
+
+int __rte_cold
+iavf_txq_vec_setup(struct ci_tx_queue *txq)
+{
+ txq->vector_tx = true;
+ return 0;
+}
+
+int __rte_cold
+iavf_rxq_vec_setup(struct ci_rx_queue *rxq)
+{
+ rxq->rel_mbufs_type = IAVF_REL_MBUFS_SSE_VEC;
+ rxq->mbuf_initializer = ci_rxq_mbuf_initializer(rxq->port_id);
+ return 0;
+}
+
+int __rte_cold
+iavf_rx_vec_dev_check(struct rte_eth_dev *dev)
+{
+ return iavf_rx_vec_dev_check_default(dev);
+}
+
+int __rte_cold
+iavf_tx_vec_dev_check(struct rte_eth_dev *dev)
+{
+ return iavf_tx_vec_dev_check_default(dev);
+}
diff --git a/drivers/net/intel/iavf/iavf_rxtx_vec_sse.c b/drivers/net/intel/iavf/iavf_rxtx_vec_sse.c
deleted file mode 100644
index 9dae0a79bf..0000000000
--- a/drivers/net/intel/iavf/iavf_rxtx_vec_sse.c
+++ /dev/null
@@ -1,1395 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2017 Intel Corporation
- */
-
-#include <stdint.h>
-#include <ethdev_driver.h>
-#include <rte_malloc.h>
-
-#include "iavf.h"
-#include "iavf_rxtx.h"
-#include "iavf_rxtx_vec_common.h"
-#include "../common/rx_vec_x86.h"
-
-#include <rte_vect.h>
-
-static inline void
-iavf_rxq_rearm(struct ci_rx_queue *rxq)
-{
- ci_rxq_rearm(rxq, CI_RX_VEC_LEVEL_SSE);
-}
-
-static inline void
-desc_to_olflags_v(struct ci_rx_queue *rxq, __m128i descs[4],
- struct rte_mbuf **rx_pkts)
-{
- const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
- __m128i rearm0, rearm1, rearm2, rearm3;
-
- __m128i vlan0, vlan1, rss, l3_l4e;
-
- /* mask everything except RSS, flow director and VLAN flags
- * bit2 is for VLAN tag, bit11 for flow director indication
- * bit13:12 for RSS indication.
- */
- const __m128i rss_vlan_msk = _mm_set_epi32(
- 0x1c03804, 0x1c03804, 0x1c03804, 0x1c03804);
-
- const __m128i cksum_mask = _mm_set_epi32(
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
-
- /* map rss and vlan type to rss hash and vlan flag */
- const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
- 0, 0, 0, 0);
-
- const __m128i rss_flags = _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_RSS_HASH, 0, 0,
- 0, 0, RTE_MBUF_F_RX_FDIR, 0);
-
- const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
- /* shift right 1 bit to make sure it not exceed 255 */
- (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
- RTE_MBUF_F_RX_IP_CKSUM_BAD >> 1,
- (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD) >> 1);
-
- vlan0 = _mm_unpackhi_epi32(descs[0], descs[1]);
- vlan1 = _mm_unpackhi_epi32(descs[2], descs[3]);
- vlan0 = _mm_unpacklo_epi64(vlan0, vlan1);
-
- vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
- vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
-
- rss = _mm_srli_epi32(vlan1, 11);
- rss = _mm_shuffle_epi8(rss_flags, rss);
-
- l3_l4e = _mm_srli_epi32(vlan1, 22);
- l3_l4e = _mm_shuffle_epi8(l3_l4e_flags, l3_l4e);
- /* then we shift left 1 bit */
- l3_l4e = _mm_slli_epi32(l3_l4e, 1);
- /* we need to mask out the redundant bits */
- l3_l4e = _mm_and_si128(l3_l4e, cksum_mask);
-
- vlan0 = _mm_or_si128(vlan0, rss);
- vlan0 = _mm_or_si128(vlan0, l3_l4e);
-
- /* At this point, we have the 4 sets of flags in the low 16-bits
- * of each 32-bit value in vlan0.
- * We want to extract these, and merge them with the mbuf init data
- * so we can do a single 16-byte write to the mbuf to set the flags
- * and all the other initialization fields. Extracting the
- * appropriate flags means that we have to do a shift and blend for
- * each mbuf before we do the write.
- */
- rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 8), 0x10);
- rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 4), 0x10);
- rearm2 = _mm_blend_epi16(mbuf_init, vlan0, 0x10);
- rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(vlan0, 4), 0x10);
-
- /* write the rearm data and the olflags in one write */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
- offsetof(struct rte_mbuf, rearm_data) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
- RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
- _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
- _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
- _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
- _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
-}
-
-static inline __m128i
-flex_rxd_to_fdir_flags_vec(const __m128i fdir_id0_3)
-{
-#define FDID_MIS_MAGIC 0xFFFFFFFF
- RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR != (1 << 2));
- RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR_ID != (1 << 13));
- const __m128i pkt_fdir_bit = _mm_set1_epi32(RTE_MBUF_F_RX_FDIR |
- RTE_MBUF_F_RX_FDIR_ID);
- /* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
- const __m128i fdir_mis_mask = _mm_set1_epi32(FDID_MIS_MAGIC);
- __m128i fdir_mask = _mm_cmpeq_epi32(fdir_id0_3,
- fdir_mis_mask);
- /* this XOR op results to bit-reverse the fdir_mask */
- fdir_mask = _mm_xor_si128(fdir_mask, fdir_mis_mask);
- const __m128i fdir_flags = _mm_and_si128(fdir_mask, pkt_fdir_bit);
-
- return fdir_flags;
-}
-
-static inline void
-flex_desc_to_olflags_v(struct ci_rx_queue *rxq, __m128i descs[4], __m128i descs_bh[4],
- struct rte_mbuf **rx_pkts)
-{
- const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
- __m128i rearm0, rearm1, rearm2, rearm3;
-
- __m128i tmp_desc, flags, rss_vlan;
-
- /* mask everything except checksum, RSS and VLAN flags.
- * bit6:4 for checksum.
- * bit12 for RSS indication.
- * bit13 for VLAN indication.
- */
- const __m128i desc_mask = _mm_set_epi32(0x30f0, 0x30f0,
- 0x30f0, 0x30f0);
-
- const __m128i cksum_mask = _mm_set_epi32(RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
-
- /* map the checksum, rss and vlan fields to the checksum, rss
- * and vlan flag
- */
- const __m128i cksum_flags =
- _mm_set_epi8((RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- /**
- * shift right 20 bits to use the low two bits to indicate
- * outer checksum status
- * shift right 1 bit to make sure it not exceed 255
- */
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1);
-
-
- const __m128i rss_vlan_flags = _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
- RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
- RTE_MBUF_F_RX_RSS_HASH, 0);
-
- /* merge 4 descriptors */
- flags = _mm_unpackhi_epi32(descs[0], descs[1]);
- tmp_desc = _mm_unpackhi_epi32(descs[2], descs[3]);
- tmp_desc = _mm_unpacklo_epi64(flags, tmp_desc);
- tmp_desc = _mm_and_si128(tmp_desc, desc_mask);
-
- /* checksum flags */
- tmp_desc = _mm_srli_epi32(tmp_desc, 4);
- flags = _mm_shuffle_epi8(cksum_flags, tmp_desc);
- /* then we shift left 1 bit */
- flags = _mm_slli_epi32(flags, 1);
- __m128i l4_outer_mask = _mm_set_epi32(0x6, 0x6, 0x6, 0x6);
- __m128i l4_outer_flags = _mm_and_si128(flags, l4_outer_mask);
- l4_outer_flags = _mm_slli_epi32(l4_outer_flags, 20);
-
- __m128i l3_l4_mask = _mm_set_epi32(~0x6, ~0x6, ~0x6, ~0x6);
- __m128i l3_l4_flags = _mm_and_si128(flags, l3_l4_mask);
- flags = _mm_or_si128(l3_l4_flags, l4_outer_flags);
- /* we need to mask out the redundant bits introduced by RSS or
- * VLAN fields.
- */
- flags = _mm_and_si128(flags, cksum_mask);
-
- /* RSS, VLAN flag */
- tmp_desc = _mm_srli_epi32(tmp_desc, 8);
- rss_vlan = _mm_shuffle_epi8(rss_vlan_flags, tmp_desc);
-
- /* merge the flags */
- flags = _mm_or_si128(flags, rss_vlan);
-
- if (rxq->rx_flags & IAVF_RX_FLAGS_VLAN_TAG_LOC_L2TAG2_2) {
- const __m128i l2tag2_mask =
- _mm_set1_epi32(1 << IAVF_RX_FLEX_DESC_STATUS1_L2TAG2P_S);
-
- const __m128i vlan_tci0_1 =
- _mm_unpacklo_epi32(descs_bh[0], descs_bh[1]);
- const __m128i vlan_tci2_3 =
- _mm_unpacklo_epi32(descs_bh[2], descs_bh[3]);
- const __m128i vlan_tci0_3 =
- _mm_unpacklo_epi64(vlan_tci0_1, vlan_tci2_3);
-
- __m128i vlan_bits = _mm_and_si128(vlan_tci0_3, l2tag2_mask);
-
- vlan_bits = _mm_srli_epi32(vlan_bits,
- IAVF_RX_FLEX_DESC_STATUS1_L2TAG2P_S);
-
- const __m128i vlan_flags_shuf =
- _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0,
- RTE_MBUF_F_RX_VLAN |
- RTE_MBUF_F_RX_VLAN_STRIPPED,
- 0);
-
- const __m128i vlan_flags = _mm_shuffle_epi8(vlan_flags_shuf, vlan_bits);
-
- /* merge with vlan_flags */
- flags = _mm_or_si128(flags, vlan_flags);
- }
-
- if (rxq->fdir_enabled) {
- const __m128i fdir_id0_1 =
- _mm_unpackhi_epi32(descs[0], descs[1]);
-
- const __m128i fdir_id2_3 =
- _mm_unpackhi_epi32(descs[2], descs[3]);
-
- const __m128i fdir_id0_3 =
- _mm_unpackhi_epi64(fdir_id0_1, fdir_id2_3);
-
- const __m128i fdir_flags =
- flex_rxd_to_fdir_flags_vec(fdir_id0_3);
-
- /* merge with fdir_flags */
- flags = _mm_or_si128(flags, fdir_flags);
-
- /* write fdir_id to mbuf */
- rx_pkts[0]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 0);
-
- rx_pkts[1]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 1);
-
- rx_pkts[2]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 2);
-
- rx_pkts[3]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 3);
- } /* if() on fdir_enabled */
-
- if (rxq->offloads & RTE_ETH_RX_OFFLOAD_TIMESTAMP)
- flags = _mm_or_si128(flags, _mm_set1_epi32(iavf_timestamp_dynflag));
-
- /**
- * At this point, we have the 4 sets of flags in the low 16-bits
- * of each 32-bit value in flags.
- * We want to extract these, and merge them with the mbuf init data
- * so we can do a single 16-byte write to the mbuf to set the flags
- * and all the other initialization fields. Extracting the
- * appropriate flags means that we have to do a shift and blend for
- * each mbuf before we do the write.
- */
- rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 8), 0x30);
- rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 4), 0x30);
- rearm2 = _mm_blend_epi16(mbuf_init, flags, 0x30);
- rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(flags, 4), 0x30);
-
- /* write the rearm data and the olflags in one write */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
- offsetof(struct rte_mbuf, rearm_data) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
- RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
- _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
- _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
- _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
- _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
-}
-
-#define PKTLEN_SHIFT 10
-
-static inline void
-desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
- const uint32_t *type_table)
-{
- __m128i ptype0 = _mm_unpackhi_epi64(descs[0], descs[1]);
- __m128i ptype1 = _mm_unpackhi_epi64(descs[2], descs[3]);
-
- ptype0 = _mm_srli_epi64(ptype0, 30);
- ptype1 = _mm_srli_epi64(ptype1, 30);
-
- rx_pkts[0]->packet_type = type_table[_mm_extract_epi8(ptype0, 0)];
- rx_pkts[1]->packet_type = type_table[_mm_extract_epi8(ptype0, 8)];
- rx_pkts[2]->packet_type = type_table[_mm_extract_epi8(ptype1, 0)];
- rx_pkts[3]->packet_type = type_table[_mm_extract_epi8(ptype1, 8)];
-}
-
-static inline void
-flex_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
- const uint32_t *type_table)
-{
- const __m128i ptype_mask =
- _mm_set_epi16(IAVF_RX_FLEX_DESC_PTYPE_M, 0x0,
- IAVF_RX_FLEX_DESC_PTYPE_M, 0x0,
- IAVF_RX_FLEX_DESC_PTYPE_M, 0x0,
- IAVF_RX_FLEX_DESC_PTYPE_M, 0x0);
-
- __m128i ptype_01 = _mm_unpacklo_epi32(descs[0], descs[1]);
- __m128i ptype_23 = _mm_unpacklo_epi32(descs[2], descs[3]);
- __m128i ptype_all = _mm_unpacklo_epi64(ptype_01, ptype_23);
-
- ptype_all = _mm_and_si128(ptype_all, ptype_mask);
-
- rx_pkts[0]->packet_type = type_table[_mm_extract_epi16(ptype_all, 1)];
- rx_pkts[1]->packet_type = type_table[_mm_extract_epi16(ptype_all, 3)];
- rx_pkts[2]->packet_type = type_table[_mm_extract_epi16(ptype_all, 5)];
- rx_pkts[3]->packet_type = type_table[_mm_extract_epi16(ptype_all, 7)];
-}
-
-/**
- * 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
- * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
- */
-static inline uint16_t
-_recv_raw_pkts_vec(struct ci_rx_queue *rxq, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts, uint8_t *split_packet)
-{
- volatile union ci_rx_desc *rxdp;
- struct ci_rx_entry *sw_ring;
- uint16_t nb_pkts_recd;
- int pos;
- uint64_t var;
- __m128i shuf_msk;
- const uint32_t *ptype_tbl = rxq->iavf_vsi->adapter->ptype_tbl;
-
- __m128i crc_adjust = _mm_set_epi16(
- 0, 0, 0, /* ignore non-length fields */
- -rxq->crc_len, /* sub crc on data_len */
- 0, /* ignore high-16bits of pkt_len */
- -rxq->crc_len, /* sub crc on pkt_len */
- 0, 0 /* ignore pkt_type field */
- );
- /* compile-time check the above crc_adjust layout is correct.
- * NOTE: the first field (lowest address) is given last in set_epi16
- * call above.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
- __m128i dd_check, eop_check;
-
- /* 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);
-
- /* Just the act of getting into the function from the application is
- * going to cost about 7 cycles
- */
- rxdp = rxq->rx_ring + rxq->rx_tail;
-
- rte_prefetch0(rxdp);
-
- /* See if we need to rearm the RX queue - gives the prefetch a bit
- * of time to act
- */
- if (rxq->rxrearm_nb > rxq->rx_free_thresh)
- iavf_rxq_rearm(rxq);
-
- /* Before we start moving massive data around, check to see if
- * there is actually a packet available
- */
- if (!(rxdp->wb.qword1.status_error_len &
- rte_cpu_to_le_32(1 << IAVF_RX_DESC_STATUS_DD_SHIFT)))
- return 0;
-
- /* 4 packets DD mask */
- dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
-
- /* 4 packets EOP mask */
- eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
-
- /* mask to shuffle from desc. to mbuf */
- shuf_msk = _mm_set_epi8(
- 7, 6, 5, 4, /* octet 4~7, 32bits rss */
- 3, 2, /* octet 2~3, low 16 bits vlan_macip */
- 15, 14, /* octet 15~14, 16 bits data_len */
- 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
- 15, 14, /* octet 15~14, low 16 bits pkt_len */
- 0xFF, 0xFF, 0xFF, 0xFF /* pkt_type set as unknown */
- );
- /* Compile-time verify the shuffle mask
- * NOTE: some field positions already verified above, but duplicated
- * here for completeness in case of future modifications.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
-
- /* Cache is empty -> need to scan the buffer rings, but first move
- * the next 'n' mbufs into the cache
- */
- sw_ring = &rxq->sw_ring[rxq->rx_tail];
-
- /* A. load 4 packet in one loop
- * [A*. mask out 4 unused dirty field in desc]
- * B. copy 4 mbuf point from swring to rx_pkts
- * C. calc the number of DD bits among the 4 packets
- * [C*. extract the end-of-packet bit, if requested]
- * D. fill info. from desc to mbuf
- */
-
- for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
- pos += IAVF_VPMD_DESCS_PER_LOOP,
- rxdp += IAVF_VPMD_DESCS_PER_LOOP) {
- __m128i descs[IAVF_VPMD_DESCS_PER_LOOP];
- __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
- __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
- /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
- __m128i mbp1;
-#if defined(RTE_ARCH_X86_64)
- __m128i mbp2;
-#endif
-
- /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
- mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos].mbuf);
- /* Read desc statuses backwards to avoid race condition */
- /* A.1 load desc[3] */
- descs[3] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 3));
- rte_compiler_barrier();
-
- /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
-
-#if defined(RTE_ARCH_X86_64)
- /* B.1 load 2 64 bit mbuf points */
- mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
-#endif
-
- /* A.1 load desc[2-0] */
- descs[2] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 2));
- rte_compiler_barrier();
- descs[1] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 1));
- rte_compiler_barrier();
- descs[0] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp));
-
-#if defined(RTE_ARCH_X86_64)
- /* B.2 copy 2 mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
-#endif
-
- if (split_packet) {
- rte_mbuf_prefetch_part2(rx_pkts[pos]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
- }
-
- /* avoid compiler reorder optimization */
- rte_compiler_barrier();
-
- /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
- const __m128i len3 = _mm_slli_epi32(descs[3], PKTLEN_SHIFT);
- const __m128i len2 = _mm_slli_epi32(descs[2], PKTLEN_SHIFT);
-
- /* merge the now-aligned packet length fields back in */
- descs[3] = _mm_blend_epi16(descs[3], len3, 0x80);
- descs[2] = _mm_blend_epi16(descs[2], len2, 0x80);
-
- /* D.1 pkt 3,4 convert format from desc to pktmbuf */
- pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
- pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
-
- /* C.1 4=>2 status err info only */
- sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
- sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
-
- desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
-
- /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
- pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
- pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
-
- /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
- const __m128i len1 = _mm_slli_epi32(descs[1], PKTLEN_SHIFT);
- const __m128i len0 = _mm_slli_epi32(descs[0], PKTLEN_SHIFT);
-
- /* merge the now-aligned packet length fields back in */
- descs[1] = _mm_blend_epi16(descs[1], len1, 0x80);
- descs[0] = _mm_blend_epi16(descs[0], len0, 0x80);
-
- /* D.1 pkt 1,2 convert format from desc to pktmbuf */
- pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
- pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
-
- /* C.2 get 4 pkts status err value */
- zero = _mm_xor_si128(dd_check, dd_check);
- staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
-
- /* D.3 copy final 3,4 data to rx_pkts */
- _mm_storeu_si128(
- (void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
- pkt_mb4);
- _mm_storeu_si128(
- (void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
- pkt_mb3);
-
- /* D.2 pkt 1,2 remove crc */
- pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
- pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
-
- /* C* extract and record EOP bit */
- if (split_packet) {
- __m128i eop_shuf_mask = _mm_set_epi8(
- 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF,
- 0x04, 0x0C, 0x00, 0x08
- );
-
- /* and with mask to extract bits, flipping 1-0 */
- __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
- /* the staterr values are not in order, as the count
- * of dd bits doesn't care. However, for end of
- * packet tracking, we do care, so shuffle. This also
- * compresses the 32-bit values to 8-bit
- */
- eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
- /* store the resulting 32-bit value */
- *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
- split_packet += IAVF_VPMD_DESCS_PER_LOOP;
- }
-
- /* C.3 calc available number of desc */
- staterr = _mm_and_si128(staterr, dd_check);
- staterr = _mm_packs_epi32(staterr, zero);
-
- /* D.3 copy final 1,2 data to rx_pkts */
- _mm_storeu_si128(
- (void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
- pkt_mb2);
- _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
- pkt_mb1);
- desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
- /* C.4 calc available number of desc */
- var = rte_popcount64(_mm_cvtsi128_si64(staterr));
- nb_pkts_recd += var;
- if (likely(var != IAVF_VPMD_DESCS_PER_LOOP))
- break;
- }
-
- /* 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));
- rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
-
- return nb_pkts_recd;
-}
-
-/**
- * vPMD raw receive routine for flex RxD,
- * only accept(nb_pkts >= IAVF_VPMD_DESCS_PER_LOOP)
- *
- * Notice:
- * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
- */
-static inline uint16_t
-_recv_raw_pkts_vec_flex_rxd(struct ci_rx_queue *rxq,
- struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts, uint8_t *split_packet)
-{
- volatile union ci_rx_flex_desc *rxdp;
- struct ci_rx_entry *sw_ring;
- uint16_t nb_pkts_recd;
- int pos;
- uint64_t var;
- struct iavf_adapter *adapter = rxq->iavf_vsi->adapter;
- uint64_t offloads = adapter->dev_data->dev_conf.rxmode.offloads;
- const uint32_t *ptype_tbl = adapter->ptype_tbl;
- __m128i crc_adjust = _mm_set_epi16
- (0, 0, 0, /* ignore non-length fields */
- -rxq->crc_len, /* sub crc on data_len */
- 0, /* ignore high-16bits of pkt_len */
- -rxq->crc_len, /* sub crc on pkt_len */
- 0, 0 /* ignore pkt_type field */
- );
- const __m128i zero = _mm_setzero_si128();
- /* mask to shuffle from desc. to mbuf */
- const __m128i shuf_msk = _mm_set_epi8
- (0xFF, 0xFF,
- 0xFF, 0xFF, /* rss hash parsed separately */
- 11, 10, /* octet 10~11, 16 bits vlan_macip */
- 5, 4, /* octet 4~5, 16 bits data_len */
- 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
- 5, 4, /* octet 4~5, low 16 bits pkt_len */
- 0xFF, 0xFF, /* pkt_type set as unknown */
- 0xFF, 0xFF /* pkt_type set as unknown */
- );
- const __m128i eop_shuf_mask = _mm_set_epi8(0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0x04, 0x0C,
- 0x00, 0x08);
-
- /**
- * compile-time check the above crc_adjust layout is correct.
- * NOTE: the first field (lowest address) is given last in set_epi16
- * call above.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
-
- /* 4 packets DD mask */
- const __m128i dd_check = _mm_set_epi64x(0x0000000100000001LL,
- 0x0000000100000001LL);
- /* 4 packets EOP mask */
- const __m128i eop_check = _mm_set_epi64x(0x0000000200000002LL,
- 0x0000000200000002LL);
-
- /* 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);
-
- /* Just the act of getting into the function from the application is
- * going to cost about 7 cycles
- */
- rxdp = rxq->rx_flex_ring + rxq->rx_tail;
-
- rte_prefetch0(rxdp);
-
- /* See if we need to rearm the RX queue - gives the prefetch a bit
- * of time to act
- */
- if (rxq->rxrearm_nb > rxq->rx_free_thresh)
- iavf_rxq_rearm(rxq);
-
- /* Before we start moving massive data around, check to see if
- * there is actually a packet available
- */
- if (!(rxdp->wb.status_error0 &
- rte_cpu_to_le_32(1 << IAVF_RX_FLEX_DESC_STATUS0_DD_S)))
- return 0;
-
- 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);
- }
- }
-
- /**
- * Compile-time verify the shuffle mask
- * NOTE: some field positions already verified above, but duplicated
- * here for completeness in case of future modifications.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
-
- /* Cache is empty -> need to scan the buffer rings, but first move
- * the next 'n' mbufs into the cache
- */
- sw_ring = &rxq->sw_ring[rxq->rx_tail];
-
- /* A. load 4 packet in one loop
- * [A*. mask out 4 unused dirty field in desc]
- * B. copy 4 mbuf point from swring to rx_pkts
- * C. calc the number of DD bits among the 4 packets
- * [C*. extract the end-of-packet bit, if requested]
- * D. fill info. from desc to mbuf
- */
-
- for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
- pos += IAVF_VPMD_DESCS_PER_LOOP,
- rxdp += IAVF_VPMD_DESCS_PER_LOOP) {
- __m128i descs[IAVF_VPMD_DESCS_PER_LOOP];
- __m128i descs_bh[IAVF_VPMD_DESCS_PER_LOOP] = {_mm_setzero_si128()};
- __m128i pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
- __m128i staterr, sterr_tmp1, sterr_tmp2;
- /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
- __m128i mbp1;
-#if defined(RTE_ARCH_X86_64)
- __m128i mbp2;
-#endif
-
- /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
- mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos].mbuf);
- /* Read desc statuses backwards to avoid race condition */
- /* A.1 load desc[3] */
- descs[3] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 3));
- rte_compiler_barrier();
-
- /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
-
-#if defined(RTE_ARCH_X86_64)
- /* B.1 load 2 64 bit mbuf points */
- mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
-#endif
-
- /* A.1 load desc[2-0] */
- descs[2] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 2));
- rte_compiler_barrier();
- descs[1] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 1));
- rte_compiler_barrier();
- descs[0] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp));
-
-#if defined(RTE_ARCH_X86_64)
- /* B.2 copy 2 mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
-#endif
-
- if (split_packet) {
- rte_mbuf_prefetch_part2(rx_pkts[pos]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
- }
-
- /* avoid compiler reorder optimization */
- rte_compiler_barrier();
-
- /* D.1 pkt 3,4 convert format from desc to pktmbuf */
- pkt_mb3 = _mm_shuffle_epi8(descs[3], shuf_msk);
- pkt_mb2 = _mm_shuffle_epi8(descs[2], shuf_msk);
-
- /* D.1 pkt 1,2 convert format from desc to pktmbuf */
- pkt_mb1 = _mm_shuffle_epi8(descs[1], shuf_msk);
- pkt_mb0 = _mm_shuffle_epi8(descs[0], shuf_msk);
-
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
-
- /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
- pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
- pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
-
- /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
- pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
- pkt_mb0 = _mm_add_epi16(pkt_mb0, crc_adjust);
-
- /**
- * 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
- (RTE_CAST_PTR(const __m128i *, &rxdp[3].wb.status_error1));
- rte_compiler_barrier();
- descs_bh[2] = _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[2].wb.status_error1));
- rte_compiler_barrier();
- descs_bh[1] = _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[1].wb.status_error1));
- rte_compiler_barrier();
- descs_bh[0] = _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[0].wb.status_error1));
- }
-
- if (offloads & RTE_ETH_RX_OFFLOAD_RSS_HASH) {
- /**
- * to shift the 32b RSS hash value to the
- * highest 32b of each 128b before mask
- */
- __m128i rss_hash3 =
- _mm_slli_epi64(descs_bh[3], 32);
- __m128i rss_hash2 =
- _mm_slli_epi64(descs_bh[2], 32);
- __m128i rss_hash1 =
- _mm_slli_epi64(descs_bh[1], 32);
- __m128i rss_hash0 =
- _mm_slli_epi64(descs_bh[0], 32);
-
- __m128i rss_hash_msk =
- _mm_set_epi32(0xFFFFFFFF, 0, 0, 0);
-
- rss_hash3 = _mm_and_si128
- (rss_hash3, rss_hash_msk);
- rss_hash2 = _mm_and_si128
- (rss_hash2, rss_hash_msk);
- rss_hash1 = _mm_and_si128
- (rss_hash1, rss_hash_msk);
- rss_hash0 = _mm_and_si128
- (rss_hash0, rss_hash_msk);
-
- pkt_mb3 = _mm_or_si128(pkt_mb3, rss_hash3);
- pkt_mb2 = _mm_or_si128(pkt_mb2, rss_hash2);
- pkt_mb1 = _mm_or_si128(pkt_mb1, rss_hash1);
- pkt_mb0 = _mm_or_si128(pkt_mb0, rss_hash0);
- } /* if() on RSS hash parsing */
-
- if (rxq->rx_flags & IAVF_RX_FLAGS_VLAN_TAG_LOC_L2TAG2_2) {
- /* L2TAG2_2 */
- __m128i vlan_tci3 = _mm_slli_si128(descs_bh[3], 4);
- __m128i vlan_tci2 = _mm_slli_si128(descs_bh[2], 4);
- __m128i vlan_tci1 = _mm_slli_si128(descs_bh[1], 4);
- __m128i vlan_tci0 = _mm_slli_si128(descs_bh[0], 4);
-
- const __m128i vlan_tci_msk = _mm_set_epi32(0, 0xFFFF0000, 0, 0);
-
- vlan_tci3 = _mm_and_si128(vlan_tci3, vlan_tci_msk);
- vlan_tci2 = _mm_and_si128(vlan_tci2, vlan_tci_msk);
- vlan_tci1 = _mm_and_si128(vlan_tci1, vlan_tci_msk);
- vlan_tci0 = _mm_and_si128(vlan_tci0, vlan_tci_msk);
-
- pkt_mb3 = _mm_or_si128(pkt_mb3, vlan_tci3);
- 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 = _mm_setzero_si128();
- __m128i mask_high = _mm_setzero_si128();
- 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]);
-
- /* C.2 get 4 pkts staterr value */
- staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
-
- /* D.3 copy final 3,4 data to rx_pkts */
- _mm_storeu_si128
- ((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
- pkt_mb3);
- _mm_storeu_si128
- ((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
- pkt_mb2);
-
- /* C* extract and record EOP bit */
- if (split_packet) {
- /* and with mask to extract bits, flipping 1-0 */
- __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
- /* the staterr values are not in order, as the count
- * of dd bits doesn't care. However, for end of
- * packet tracking, we do care, so shuffle. This also
- * compresses the 32-bit values to 8-bit
- */
- eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
- /* store the resulting 32-bit value */
- *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
- split_packet += IAVF_VPMD_DESCS_PER_LOOP;
- }
-
- /* C.3 calc available number of desc */
- staterr = _mm_and_si128(staterr, dd_check);
- staterr = _mm_packs_epi32(staterr, zero);
-
- /* D.3 copy final 1,2 data to rx_pkts */
- _mm_storeu_si128
- ((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
- pkt_mb1);
- _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
- pkt_mb0);
- flex_desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
- /* C.4 calc available number of desc */
- var = rte_popcount64(_mm_cvtsi128_si64(staterr));
- nb_pkts_recd += var;
-
- 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;
- /* fallthrough */
- case 2:
- *RTE_MBUF_DYNFIELD(rx_pkts[pos + 1],
- iavf_timestamp_dynfield_offset + 4, uint32_t *) += 1;
- /* fallthrough */
- case 3:
- *RTE_MBUF_DYNFIELD(rx_pkts[pos + 2],
- iavf_timestamp_dynfield_offset + 4, uint32_t *) += 1;
- /* fallthrough */
- case 4:
- *RTE_MBUF_DYNFIELD(rx_pkts[pos + 3],
- iavf_timestamp_dynfield_offset + 4, uint32_t *) += 1;
- rxq->phc_time += (uint64_t)1 << 32;
- /* fallthrough */
- 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);
- }
-
- if (likely(var != IAVF_VPMD_DESCS_PER_LOOP))
- break;
- }
-
-#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
-
- /* 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));
- rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
-
- return nb_pkts_recd;
-}
-
-/* Notice:
- * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_BURST, only scan IAVF_VPMD_RX_BURST
- * numbers of DD bits
- */
-uint16_t
-iavf_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_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_BURST, only scan IAVF_VPMD_RX_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)
-{
- return _recv_raw_pkts_vec_flex_rxd(rx_queue, rx_pkts, nb_pkts, NULL);
-}
-
-/**
- * vPMD receive routine that reassembles single burst of 32 scattered packets
- *
- * Notice:
- * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- */
-static uint16_t
-iavf_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- struct ci_rx_queue *rxq = rx_queue;
- uint8_t split_flags[IAVF_VPMD_RX_BURST] = {0};
- unsigned int i = 0;
-
- /* get some new buffers */
- uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
- split_flags);
- if (nb_bufs == 0)
- return 0;
-
- /* happy day case, full burst + no packets to be joined */
- const uint64_t *split_fl64 = (uint64_t *)split_flags;
-
- if (!rxq->pkt_first_seg &&
- split_fl64[0] == 0 && split_fl64[1] == 0 &&
- split_fl64[2] == 0 && split_fl64[3] == 0)
- return nb_bufs;
-
- /* reassemble any packets that need reassembly*/
- if (!rxq->pkt_first_seg) {
- /* find the first split flag, and only reassemble then*/
- while (i < nb_bufs && !split_flags[i])
- i++;
- if (i == nb_bufs)
- return nb_bufs;
- rxq->pkt_first_seg = rx_pkts[i];
- }
- return i + ci_rx_reassemble_packets(&rx_pkts[i], nb_bufs - i, &split_flags[i],
- &rxq->pkt_first_seg, &rxq->pkt_last_seg, rxq->crc_len);
-}
-
-/**
- * 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)
-{
- uint16_t retval = 0;
-
- while (nb_pkts > IAVF_VPMD_RX_BURST) {
- uint16_t burst;
-
- burst = iavf_recv_scattered_burst_vec(rx_queue,
- rx_pkts + retval,
- IAVF_VPMD_RX_BURST);
- retval += burst;
- nb_pkts -= burst;
- if (burst < IAVF_VPMD_RX_BURST)
- return retval;
- }
-
- return retval + iavf_recv_scattered_burst_vec(rx_queue,
- rx_pkts + retval,
- nb_pkts);
-}
-
-/**
- * vPMD receive routine that reassembles single burst of 32 scattered packets
- * for flex RxD
- *
- * Notice:
- * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- */
-static uint16_t
-iavf_recv_scattered_burst_vec_flex_rxd(void *rx_queue,
- struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- struct ci_rx_queue *rxq = rx_queue;
- uint8_t split_flags[IAVF_VPMD_RX_BURST] = {0};
- unsigned int i = 0;
-
- /* get some new buffers */
- uint16_t nb_bufs = _recv_raw_pkts_vec_flex_rxd(rxq, rx_pkts, nb_pkts,
- split_flags);
- if (nb_bufs == 0)
- return 0;
-
- /* happy day case, full burst + no packets to be joined */
- const uint64_t *split_fl64 = (uint64_t *)split_flags;
-
- if (!rxq->pkt_first_seg &&
- split_fl64[0] == 0 && split_fl64[1] == 0 &&
- split_fl64[2] == 0 && split_fl64[3] == 0)
- return nb_bufs;
-
- /* reassemble any packets that need reassembly*/
- if (!rxq->pkt_first_seg) {
- /* find the first split flag, and only reassemble then*/
- while (i < nb_bufs && !split_flags[i])
- i++;
- if (i == nb_bufs)
- return nb_bufs;
- rxq->pkt_first_seg = rx_pkts[i];
- }
- return i + ci_rx_reassemble_packets(&rx_pkts[i], nb_bufs - i, &split_flags[i],
- &rxq->pkt_first_seg, &rxq->pkt_last_seg, rxq->crc_len);
-}
-
-/**
- * vPMD receive routine that reassembles scattered packets for flex RxD
- */
-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_BURST) {
- uint16_t burst;
-
- burst = iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
- rx_pkts + retval,
- IAVF_VPMD_RX_BURST);
- retval += burst;
- nb_pkts -= burst;
- if (burst < IAVF_VPMD_RX_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)
-{
- uint64_t high_qw =
- (IAVF_TX_DESC_DTYPE_DATA |
- ((uint64_t)flags << IAVF_TXD_QW1_CMD_SHIFT) |
- ((uint64_t)pkt->data_len <<
- IAVF_TXD_QW1_TX_BUF_SZ_SHIFT));
-
- __m128i descriptor = _mm_set_epi64x(high_qw,
- pkt->buf_iova + pkt->data_off);
- _mm_store_si128(RTE_CAST_PTR(__m128i *, txdp), descriptor);
-}
-
-static inline void
-iavf_vtx(volatile struct iavf_tx_desc *txdp, struct rte_mbuf **pkt,
- uint16_t nb_pkts, uint64_t flags)
-{
- int i;
-
- for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
- vtx1(txdp, *pkt, flags);
-}
-
-uint16_t
-iavf_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
- uint16_t nb_pkts)
-{
- struct ci_tx_queue *txq = (struct ci_tx_queue *)tx_queue;
- volatile struct iavf_tx_desc *txdp;
- struct ci_tx_entry_vec *txep;
- uint16_t n, nb_commit, tx_id;
- uint64_t flags = IAVF_TX_DESC_CMD_EOP | 0x04; /* bit 2 must be set */
- uint64_t rs = IAVF_TX_DESC_CMD_RS | flags;
- int i;
-
- if (txq->nb_tx_free < txq->tx_free_thresh)
- ci_tx_free_bufs_vec(txq, iavf_tx_desc_done, false);
-
- nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
- if (unlikely(nb_pkts == 0))
- return 0;
- nb_commit = nb_pkts;
-
- tx_id = txq->tx_tail;
- txdp = &txq->iavf_tx_ring[tx_id];
- txep = &txq->sw_ring_vec[tx_id];
-
- txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
-
- n = (uint16_t)(txq->nb_tx_desc - tx_id);
- if (nb_commit >= n) {
- ci_tx_backlog_entry_vec(txep, tx_pkts, n);
-
- for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
- vtx1(txdp, *tx_pkts, flags);
-
- vtx1(txdp, *tx_pkts++, rs);
-
- nb_commit = (uint16_t)(nb_commit - n);
-
- tx_id = 0;
- txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
-
- /* avoid reach the end of ring */
- txdp = &txq->iavf_tx_ring[tx_id];
- txep = &txq->sw_ring_vec[tx_id];
- }
-
- ci_tx_backlog_entry_vec(txep, tx_pkts, nb_commit);
-
- iavf_vtx(txdp, tx_pkts, nb_commit, flags);
-
- tx_id = (uint16_t)(tx_id + nb_commit);
- if (tx_id > txq->tx_next_rs) {
- txq->iavf_tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
- rte_cpu_to_le_64(((uint64_t)IAVF_TX_DESC_CMD_RS) <<
- IAVF_TXD_QW1_CMD_SHIFT);
- txq->tx_next_rs =
- (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
- }
-
- txq->tx_tail = tx_id;
-
- PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_pkts=%u",
- txq->port_id, txq->queue_id, tx_id, nb_pkts);
-
- IAVF_PCI_REG_WC_WRITE(txq->qtx_tail, txq->tx_tail);
-
- return nb_pkts;
-}
-
-uint16_t
-iavf_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
- uint16_t nb_pkts)
-{
- uint16_t nb_tx = 0;
- struct ci_tx_queue *txq = (struct ci_tx_queue *)tx_queue;
-
- while (nb_pkts) {
- uint16_t ret, num;
-
- /* cross rs_thresh boundary is not allowed */
- num = (uint16_t)RTE_MIN(nb_pkts, txq->tx_rs_thresh);
- ret = iavf_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num);
- nb_tx += ret;
- nb_pkts -= ret;
- if (ret < num)
- break;
- }
-
- return nb_tx;
-}
-
-void __rte_cold
-iavf_rx_queue_release_mbufs_sse(struct ci_rx_queue *rxq)
-{
- _iavf_rx_queue_release_mbufs_vec(rxq);
-}
-
-int __rte_cold
-iavf_txq_vec_setup(struct ci_tx_queue *txq)
-{
- txq->vector_tx = true;
- return 0;
-}
-
-int __rte_cold
-iavf_rxq_vec_setup(struct ci_rx_queue *rxq)
-{
- rxq->rel_mbufs_type = IAVF_REL_MBUFS_SSE_VEC;
- rxq->mbuf_initializer = ci_rxq_mbuf_initializer(rxq->port_id);
- return 0;
-}
-
-int __rte_cold
-iavf_rx_vec_dev_check(struct rte_eth_dev *dev)
-{
- return iavf_rx_vec_dev_check_default(dev);
-}
-
-int __rte_cold
-iavf_tx_vec_dev_check(struct rte_eth_dev *dev)
-{
- return iavf_tx_vec_dev_check_default(dev);
-}
-
-enum rte_vect_max_simd
-iavf_get_max_simd_bitwidth(void)
-{
- return ci_get_x86_max_simd_bitwidth();
-}
diff --git a/drivers/net/intel/iavf/meson.build b/drivers/net/intel/iavf/meson.build
index 0db94d6fe6..f9576586f6 100644
--- a/drivers/net/intel/iavf/meson.build
+++ b/drivers/net/intel/iavf/meson.build
@@ -27,7 +27,6 @@ sources = files(
)
if arch_subdir == 'x86'
- sources += files('iavf_rxtx_vec_sse.c')
sources_avx2 += files('iavf_rxtx_vec_avx2.c')
sources_avx512 += files('iavf_rxtx_vec_avx512.c')
elif arch_subdir == 'arm'
--
2.34.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 3/4] net/ice: remove SSE vector path
2025-08-25 12:35 [PATCH 0/4] Remove SSE from some Intel drivers Ciara Loftus
2025-08-25 12:35 ` [PATCH 1/4] net/i40e: remove SSE vector path Ciara Loftus
2025-08-25 12:35 ` [PATCH 2/4] net/iavf: " Ciara Loftus
@ 2025-08-25 12:35 ` Ciara Loftus
2025-08-25 12:35 ` [PATCH 4/4] doc: add release note entry for SSE removal Ciara Loftus
3 siblings, 0 replies; 6+ messages in thread
From: Ciara Loftus @ 2025-08-25 12:35 UTC (permalink / raw)
To: dev; +Cc: Ciara Loftus
Modern x86 systems all support AVX2, if not AVX-512, so the SSE path
is no longer widely used. This change will not result in any feature
loss, as in the rare cases where the SSE path would have been used in
the absence of AVX2 or AVX-512, the fallback scalar path will be used
which has feature parity with SSE.
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
drivers/net/intel/ice/ice_rxtx.c | 43 +-
drivers/net/intel/ice/ice_rxtx.h | 6 -
drivers/net/intel/ice/ice_rxtx_vec_avx2.c | 29 +
drivers/net/intel/ice/ice_rxtx_vec_sse.c | 743 ----------------------
drivers/net/intel/ice/meson.build | 1 -
5 files changed, 49 insertions(+), 773 deletions(-)
delete mode 100644 drivers/net/intel/ice/ice_rxtx_vec_sse.c
diff --git a/drivers/net/intel/ice/ice_rxtx.c b/drivers/net/intel/ice/ice_rxtx.c
index 7e5c0a9b29..e30d50a499 100644
--- a/drivers/net/intel/ice/ice_rxtx.c
+++ b/drivers/net/intel/ice/ice_rxtx.c
@@ -9,6 +9,10 @@
#include "ice_rxtx.h"
#include "ice_rxtx_vec_common.h"
+#ifdef RTE_ARCH_X86
+#include "../common/rx_vec_x86.h"
+#endif
+
#define ICE_TX_CKSUM_OFFLOAD_MASK (RTE_MBUF_F_TX_IP_CKSUM | \
RTE_MBUF_F_TX_L4_MASK | \
RTE_MBUF_F_TX_TCP_SEG | \
@@ -2464,18 +2468,14 @@ ice_dev_supported_ptypes_get(struct rte_eth_dev *dev, size_t *no_of_elements)
return ptypes;
#ifdef RTE_ARCH_X86
- if (dev->rx_pkt_burst == ice_recv_pkts_vec ||
- dev->rx_pkt_burst == ice_recv_scattered_pkts_vec ||
-#ifdef CC_AVX512_SUPPORT
- dev->rx_pkt_burst == ice_recv_pkts_vec_avx512 ||
- dev->rx_pkt_burst == ice_recv_pkts_vec_avx512_offload ||
- dev->rx_pkt_burst == ice_recv_scattered_pkts_vec_avx512 ||
- dev->rx_pkt_burst == ice_recv_scattered_pkts_vec_avx512_offload ||
-#endif
- dev->rx_pkt_burst == ice_recv_pkts_vec_avx2 ||
- dev->rx_pkt_burst == ice_recv_pkts_vec_avx2_offload ||
- dev->rx_pkt_burst == ice_recv_scattered_pkts_vec_avx2 ||
- dev->rx_pkt_burst == ice_recv_scattered_pkts_vec_avx2_offload)
+ if (ad->rx_func_type == ICE_RX_AVX2 ||
+ ad->rx_func_type == ICE_RX_AVX2_OFFLOAD ||
+ ad->rx_func_type == ICE_RX_AVX2_SCATTERED ||
+ ad->rx_func_type == ICE_RX_AVX2_SCATTERED_OFFLOAD ||
+ ad->rx_func_type == ICE_RX_AVX512 ||
+ ad->rx_func_type == ICE_RX_AVX512_OFFLOAD ||
+ ad->rx_func_type == ICE_RX_AVX512_SCATTERED ||
+ ad->rx_func_type == ICE_RX_AVX512_SCATTERED_OFFLOAD)
return ptypes;
#endif
@@ -3479,6 +3479,12 @@ ice_tx_done_cleanup_vec(struct ci_tx_queue *txq __rte_unused,
{
return -ENOTSUP;
}
+
+enum rte_vect_max_simd
+ice_get_max_simd_bitwidth(void)
+{
+ return ci_get_x86_max_simd_bitwidth();
+}
#endif
static int
@@ -3674,11 +3680,6 @@ static const struct ci_rx_path_info ice_rx_path_infos[] = {
[ICE_RX_BULK_ALLOC] = {ice_recv_pkts_bulk_alloc, "Scalar Bulk Alloc",
{ICE_RX_SCALAR_OFFLOADS, RTE_VECT_SIMD_DISABLED, {.bulk_alloc = true}}},
#ifdef RTE_ARCH_X86
- [ICE_RX_SSE] = {ice_recv_pkts_vec, "Vector SSE",
- {ICE_RX_VECTOR_OFFLOAD_OFFLOADS, RTE_VECT_SIMD_128, {.bulk_alloc = true}}},
- [ICE_RX_SSE_SCATTERED] = {ice_recv_scattered_pkts_vec, "Vector SSE Scattered",
- {ICE_RX_VECTOR_OFFLOAD_OFFLOADS, RTE_VECT_SIMD_128,
- {.scattered = true, .bulk_alloc = true}}},
[ICE_RX_AVX2] = {ice_recv_pkts_vec_avx2, "Vector AVX2",
{ICE_RX_VECTOR_OFFLOADS, RTE_VECT_SIMD_256, {.bulk_alloc = true}}},
[ICE_RX_AVX2_SCATTERED] = {ice_recv_scattered_pkts_vec_avx2, "Vector AVX2 Scattered",
@@ -4051,12 +4052,9 @@ ice_set_tx_function(struct rte_eth_dev *dev)
ice_xmit_pkts_vec_avx2_offload;
dev->tx_pkt_prepare = ice_prep_pkts;
} else {
- PMD_DRV_LOG(DEBUG, "Using %sVector Tx (port %d).",
- ad->tx_simd_width == RTE_VECT_SIMD_256 ? "avx2 " : "",
+ PMD_DRV_LOG(DEBUG, "Using avx2 Vector Tx (port %d).",
dev->data->port_id);
- dev->tx_pkt_burst = ad->tx_simd_width == RTE_VECT_SIMD_256 ?
- ice_xmit_pkts_vec_avx2 :
- ice_xmit_pkts_vec;
+ dev->tx_pkt_burst = ice_xmit_pkts_vec_avx2;
}
}
@@ -4097,7 +4095,6 @@ static const struct {
#endif
{ ice_xmit_pkts_vec_avx2, "Vector AVX2" },
{ ice_xmit_pkts_vec_avx2_offload, "Offload Vector AVX2" },
- { ice_xmit_pkts_vec, "Vector SSE" },
#endif
};
diff --git a/drivers/net/intel/ice/ice_rxtx.h b/drivers/net/intel/ice/ice_rxtx.h
index 488ba85562..7c7e58c286 100644
--- a/drivers/net/intel/ice/ice_rxtx.h
+++ b/drivers/net/intel/ice/ice_rxtx.h
@@ -251,12 +251,6 @@ int ice_rx_vec_dev_check(struct rte_eth_dev *dev);
int ice_tx_vec_dev_check(struct rte_eth_dev *dev);
int ice_rxq_vec_setup(struct ci_rx_queue *rxq);
int ice_txq_vec_setup(struct ci_tx_queue *txq);
-uint16_t ice_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts);
-uint16_t ice_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts);
-uint16_t ice_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
- uint16_t nb_pkts);
uint16_t ice_recv_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t ice_recv_pkts_vec_avx2_offload(void *rx_queue, struct rte_mbuf **rx_pkts,
diff --git a/drivers/net/intel/ice/ice_rxtx_vec_avx2.c b/drivers/net/intel/ice/ice_rxtx_vec_avx2.c
index b952b8dddc..dbe0cac89f 100644
--- a/drivers/net/intel/ice/ice_rxtx_vec_avx2.c
+++ b/drivers/net/intel/ice/ice_rxtx_vec_avx2.c
@@ -949,3 +949,32 @@ ice_xmit_pkts_vec_avx2_offload(void *tx_queue, struct rte_mbuf **tx_pkts,
{
return ice_xmit_pkts_vec_avx2_common(tx_queue, tx_pkts, nb_pkts, true);
}
+
+int __rte_cold
+ice_rxq_vec_setup(struct ci_rx_queue *rxq)
+{
+ if (!rxq)
+ return -1;
+
+ rxq->rx_rel_mbufs = _ice_rx_queue_release_mbufs_vec;
+ rxq->mbuf_initializer = ci_rxq_mbuf_initializer(rxq->port_id);
+ return 0;
+}
+
+int __rte_cold
+ice_txq_vec_setup(struct ci_tx_queue *txq __rte_unused)
+{
+ return 0;
+}
+
+int __rte_cold
+ice_rx_vec_dev_check(struct rte_eth_dev *dev)
+{
+ return ice_rx_vec_dev_check_default(dev);
+}
+
+int __rte_cold
+ice_tx_vec_dev_check(struct rte_eth_dev *dev)
+{
+ return ice_tx_vec_dev_check_default(dev);
+}
diff --git a/drivers/net/intel/ice/ice_rxtx_vec_sse.c b/drivers/net/intel/ice/ice_rxtx_vec_sse.c
deleted file mode 100644
index 1545bc3b6e..0000000000
--- a/drivers/net/intel/ice/ice_rxtx_vec_sse.c
+++ /dev/null
@@ -1,743 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2019 Intel Corporation
- */
-
-#include "ice_rxtx_vec_common.h"
-
-#include "../common/rx_vec_x86.h"
-
-#include <rte_vect.h>
-
-static inline __m128i
-ice_flex_rxd_to_fdir_flags_vec(const __m128i fdir_id0_3)
-{
-#define FDID_MIS_MAGIC 0xFFFFFFFF
- RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR != (1 << 2));
- RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR_ID != (1 << 13));
- const __m128i pkt_fdir_bit = _mm_set1_epi32(RTE_MBUF_F_RX_FDIR |
- RTE_MBUF_F_RX_FDIR_ID);
- /* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
- const __m128i fdir_mis_mask = _mm_set1_epi32(FDID_MIS_MAGIC);
- __m128i fdir_mask = _mm_cmpeq_epi32(fdir_id0_3,
- fdir_mis_mask);
- /* this XOR op results to bit-reverse the fdir_mask */
- fdir_mask = _mm_xor_si128(fdir_mask, fdir_mis_mask);
- const __m128i fdir_flags = _mm_and_si128(fdir_mask, pkt_fdir_bit);
-
- return fdir_flags;
-}
-
-static inline void
-ice_rxq_rearm(struct ci_rx_queue *rxq)
-{
- ci_rxq_rearm(rxq, CI_RX_VEC_LEVEL_SSE);
-}
-
-static inline void
-ice_rx_desc_to_olflags_v(struct ci_rx_queue *rxq, __m128i descs[4],
- struct rte_mbuf **rx_pkts)
-{
- const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
- __m128i rearm0, rearm1, rearm2, rearm3;
-
- __m128i tmp_desc, flags, rss_vlan;
-
- /* mask everything except checksum, RSS and VLAN flags.
- * bit6:4 for checksum.
- * bit12 for RSS indication.
- * bit13 for VLAN indication.
- */
- const __m128i desc_mask = _mm_set_epi32(0x30f0, 0x30f0,
- 0x30f0, 0x30f0);
- const __m128i cksum_mask = _mm_set_epi32(RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
- RTE_MBUF_F_RX_IP_CKSUM_MASK |
- RTE_MBUF_F_RX_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
-
- /* map the checksum, rss and vlan fields to the checksum, rss
- * and vlan flag
- */
- const __m128i cksum_flags =
- _mm_set_epi8((RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 |
- RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- /**
- * shift right 20 bits to use the low two bits to indicate
- * outer checksum status
- * shift right 1 bit to make sure it not exceed 255
- */
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
- RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_BAD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
- (RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD >> 20 | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
- RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1);
-
- const __m128i rss_vlan_flags = _mm_set_epi8(0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
- RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
- RTE_MBUF_F_RX_RSS_HASH, 0);
-
- /* merge 4 descriptors */
- flags = _mm_unpackhi_epi32(descs[0], descs[1]);
- tmp_desc = _mm_unpackhi_epi32(descs[2], descs[3]);
- tmp_desc = _mm_unpacklo_epi64(flags, tmp_desc);
- tmp_desc = _mm_and_si128(tmp_desc, desc_mask);
-
- /* checksum flags */
- tmp_desc = _mm_srli_epi32(tmp_desc, 4);
- flags = _mm_shuffle_epi8(cksum_flags, tmp_desc);
- /* then we shift left 1 bit */
- flags = _mm_slli_epi32(flags, 1);
-
- __m128i l4_outer_mask = _mm_set_epi32(0x6, 0x6, 0x6, 0x6);
- __m128i l4_outer_flags = _mm_and_si128(flags, l4_outer_mask);
- l4_outer_flags = _mm_slli_epi32(l4_outer_flags, 20);
-
- __m128i l3_l4_mask = _mm_set_epi32(~0x6, ~0x6, ~0x6, ~0x6);
- __m128i l3_l4_flags = _mm_and_si128(flags, l3_l4_mask);
- flags = _mm_or_si128(l3_l4_flags, l4_outer_flags);
- /* we need to mask out the redundant bits introduced by RSS or
- * VLAN fields.
- */
- flags = _mm_and_si128(flags, cksum_mask);
-
- /* RSS, VLAN flag */
- tmp_desc = _mm_srli_epi32(tmp_desc, 8);
- rss_vlan = _mm_shuffle_epi8(rss_vlan_flags, tmp_desc);
-
- /* merge the flags */
- flags = _mm_or_si128(flags, rss_vlan);
-
- if (rxq->fdir_enabled) {
- const __m128i fdir_id0_1 =
- _mm_unpackhi_epi32(descs[0], descs[1]);
-
- const __m128i fdir_id2_3 =
- _mm_unpackhi_epi32(descs[2], descs[3]);
-
- const __m128i fdir_id0_3 =
- _mm_unpackhi_epi64(fdir_id0_1, fdir_id2_3);
-
- const __m128i fdir_flags =
- ice_flex_rxd_to_fdir_flags_vec(fdir_id0_3);
-
- /* merge with fdir_flags */
- flags = _mm_or_si128(flags, fdir_flags);
-
- /* write fdir_id to mbuf */
- rx_pkts[0]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 0);
-
- rx_pkts[1]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 1);
-
- rx_pkts[2]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 2);
-
- rx_pkts[3]->hash.fdir.hi =
- _mm_extract_epi32(fdir_id0_3, 3);
- } /* if() on fdir_enabled */
-
- /**
- * At this point, we have the 4 sets of flags in the low 16-bits
- * of each 32-bit value in flags.
- * We want to extract these, and merge them with the mbuf init data
- * so we can do a single 16-byte write to the mbuf to set the flags
- * and all the other initialization fields. Extracting the
- * appropriate flags means that we have to do a shift and blend for
- * each mbuf before we do the write.
- */
- rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 8), 0x30);
- rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 4), 0x30);
- rearm2 = _mm_blend_epi16(mbuf_init, flags, 0x30);
- rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(flags, 4), 0x30);
-
- /* write the rearm data and the olflags in one write */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
- offsetof(struct rte_mbuf, rearm_data) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
- RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
- _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
- _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
- _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
- _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
-}
-
-static inline void
-ice_rx_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
- uint32_t *ptype_tbl)
-{
- const __m128i ptype_mask = _mm_set_epi16(ICE_RX_FLEX_DESC_PTYPE_M, 0,
- ICE_RX_FLEX_DESC_PTYPE_M, 0,
- ICE_RX_FLEX_DESC_PTYPE_M, 0,
- ICE_RX_FLEX_DESC_PTYPE_M, 0);
- __m128i ptype_01 = _mm_unpacklo_epi32(descs[0], descs[1]);
- __m128i ptype_23 = _mm_unpacklo_epi32(descs[2], descs[3]);
- __m128i ptype_all = _mm_unpacklo_epi64(ptype_01, ptype_23);
-
- ptype_all = _mm_and_si128(ptype_all, ptype_mask);
-
- rx_pkts[0]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 1)];
- rx_pkts[1]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 3)];
- rx_pkts[2]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 5)];
- rx_pkts[3]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 7)];
-}
-
-/**
- * vPMD raw receive routine, only accept(nb_pkts >= ICE_VPMD_DESCS_PER_LOOP)
- *
- * Notice:
- * - nb_pkts < ICE_VPMD_DESCS_PER_LOOP, just return no packet
- * - floor align nb_pkts to a ICE_VPMD_DESCS_PER_LOOP power-of-two
- */
-static inline uint16_t
-_ice_recv_raw_pkts_vec(struct ci_rx_queue *rxq, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts, uint8_t *split_packet)
-{
- volatile union ci_rx_flex_desc *rxdp;
- struct ci_rx_entry *sw_ring;
- uint16_t nb_pkts_recd;
- int pos;
- uint64_t var;
- uint32_t *ptype_tbl = rxq->ice_vsi->adapter->ptype_tbl;
- __m128i crc_adjust = _mm_set_epi16
- (0, 0, 0, /* ignore non-length fields */
- -rxq->crc_len, /* sub crc on data_len */
- 0, /* ignore high-16bits of pkt_len */
- -rxq->crc_len, /* sub crc on pkt_len */
- 0, 0 /* ignore pkt_type field */
- );
- const __m128i zero = _mm_setzero_si128();
- /* mask to shuffle from desc. to mbuf */
- const __m128i shuf_msk = _mm_set_epi8
- (0xFF, 0xFF,
- 0xFF, 0xFF, /* rss hash parsed separately */
- 11, 10, /* octet 10~11, 16 bits vlan_macip */
- 5, 4, /* octet 4~5, 16 bits data_len */
- 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
- 5, 4, /* octet 4~5, low 16 bits pkt_len */
- 0xFF, 0xFF, /* pkt_type set as unknown */
- 0xFF, 0xFF /* pkt_type set as unknown */
- );
- const __m128i eop_shuf_mask = _mm_set_epi8(0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0xFF, 0xFF,
- 0x04, 0x0C,
- 0x00, 0x08);
-
- /**
- * compile-time check the above crc_adjust layout is correct.
- * NOTE: the first field (lowest address) is given last in set_epi16
- * call above.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
-
- /* 4 packets DD mask */
- const __m128i dd_check = _mm_set_epi64x(0x0000000100000001LL,
- 0x0000000100000001LL);
- /* 4 packets EOP mask */
- const __m128i eop_check = _mm_set_epi64x(0x0000000200000002LL,
- 0x0000000200000002LL);
-
- /* nb_pkts has to be floor-aligned to ICE_VPMD_DESCS_PER_LOOP */
- nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, ICE_VPMD_DESCS_PER_LOOP);
-
- /* Just the act of getting into the function from the application is
- * going to cost about 7 cycles
- */
- rxdp = rxq->rx_flex_ring + rxq->rx_tail;
-
- rte_prefetch0(rxdp);
-
- /* See if we need to rearm the RX queue - gives the prefetch a bit
- * of time to act
- */
- if (rxq->rxrearm_nb > ICE_VPMD_RXQ_REARM_THRESH)
- ice_rxq_rearm(rxq);
-
- /* Before we start moving massive data around, check to see if
- * there is actually a packet available
- */
- if (!(rxdp->wb.status_error0 &
- rte_cpu_to_le_32(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S)))
- return 0;
-
- /**
- * Compile-time verify the shuffle mask
- * NOTE: some field positions already verified above, but duplicated
- * here for completeness in case of future modifications.
- */
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
- RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
- offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
-
- /* Cache is empty -> need to scan the buffer rings, but first move
- * the next 'n' mbufs into the cache
- */
- sw_ring = &rxq->sw_ring[rxq->rx_tail];
-
- /* A. load 4 packet in one loop
- * [A*. mask out 4 unused dirty field in desc]
- * B. copy 4 mbuf point from swring to rx_pkts
- * C. calc the number of DD bits among the 4 packets
- * [C*. extract the end-of-packet bit, if requested]
- * D. fill info. from desc to mbuf
- */
-
- for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
- pos += ICE_VPMD_DESCS_PER_LOOP,
- rxdp += ICE_VPMD_DESCS_PER_LOOP) {
- __m128i descs[ICE_VPMD_DESCS_PER_LOOP];
- __m128i pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
- __m128i staterr, sterr_tmp1, sterr_tmp2;
- /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
- __m128i mbp1;
-#if defined(RTE_ARCH_X86_64)
- __m128i mbp2;
-#endif
-
- /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
- mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
- /* Read desc statuses backwards to avoid race condition */
- /* A.1 load desc[3] */
- descs[3] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 3));
- rte_compiler_barrier();
-
- /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
-
-#if defined(RTE_ARCH_X86_64)
- /* B.1 load 2 64 bit mbuf points */
- mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
-#endif
-
- /* A.1 load desc[2-0] */
- descs[2] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 2));
- rte_compiler_barrier();
- descs[1] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp + 1));
- rte_compiler_barrier();
- descs[0] = _mm_loadu_si128(RTE_CAST_PTR(const __m128i *, rxdp));
-
-#if defined(RTE_ARCH_X86_64)
- /* B.2 copy 2 mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
-#endif
-
- if (split_packet) {
- rte_mbuf_prefetch_part2(rx_pkts[pos]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
- rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
- }
-
- /* avoid compiler reorder optimization */
- rte_compiler_barrier();
-
- /* D.1 pkt 3,4 convert format from desc to pktmbuf */
- pkt_mb3 = _mm_shuffle_epi8(descs[3], shuf_msk);
- pkt_mb2 = _mm_shuffle_epi8(descs[2], shuf_msk);
-
- /* D.1 pkt 1,2 convert format from desc to pktmbuf */
- pkt_mb1 = _mm_shuffle_epi8(descs[1], shuf_msk);
- pkt_mb0 = _mm_shuffle_epi8(descs[0], shuf_msk);
-
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
-
- ice_rx_desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
-
- /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
- pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
- pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
-
- /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
- pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
- pkt_mb0 = _mm_add_epi16(pkt_mb0, crc_adjust);
-
-#ifndef RTE_NET_INTEL_USE_16BYTE_DESC
- /**
- * needs to load 2nd 16B of each desc for RSS hash parsing,
- * will cause performance drop to get into this context.
- */
- if (rxq->ice_vsi->adapter->pf.dev_data->dev_conf.rxmode.offloads &
- RTE_ETH_RX_OFFLOAD_RSS_HASH) {
- /* load bottom half of every 32B desc */
- const __m128i raw_desc_bh3 =
- _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[3].wb.status_error1));
- rte_compiler_barrier();
- const __m128i raw_desc_bh2 =
- _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[2].wb.status_error1));
- rte_compiler_barrier();
- const __m128i raw_desc_bh1 =
- _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[1].wb.status_error1));
- rte_compiler_barrier();
- const __m128i raw_desc_bh0 =
- _mm_load_si128
- (RTE_CAST_PTR(const __m128i *, &rxdp[0].wb.status_error1));
-
- /**
- * to shift the 32b RSS hash value to the
- * highest 32b of each 128b before mask
- */
- __m128i rss_hash3 =
- _mm_slli_epi64(raw_desc_bh3, 32);
- __m128i rss_hash2 =
- _mm_slli_epi64(raw_desc_bh2, 32);
- __m128i rss_hash1 =
- _mm_slli_epi64(raw_desc_bh1, 32);
- __m128i rss_hash0 =
- _mm_slli_epi64(raw_desc_bh0, 32);
-
- __m128i rss_hash_msk =
- _mm_set_epi32(0xFFFFFFFF, 0, 0, 0);
-
- rss_hash3 = _mm_and_si128
- (rss_hash3, rss_hash_msk);
- rss_hash2 = _mm_and_si128
- (rss_hash2, rss_hash_msk);
- rss_hash1 = _mm_and_si128
- (rss_hash1, rss_hash_msk);
- rss_hash0 = _mm_and_si128
- (rss_hash0, rss_hash_msk);
-
- pkt_mb3 = _mm_or_si128(pkt_mb3, rss_hash3);
- pkt_mb2 = _mm_or_si128(pkt_mb2, rss_hash2);
- pkt_mb1 = _mm_or_si128(pkt_mb1, rss_hash1);
- pkt_mb0 = _mm_or_si128(pkt_mb0, rss_hash0);
- } /* if() on RSS hash parsing */
-#endif
-
- /* C.2 get 4 pkts staterr value */
- staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
-
- /* D.3 copy final 3,4 data to rx_pkts */
- _mm_storeu_si128
- ((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
- pkt_mb3);
- _mm_storeu_si128
- ((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
- pkt_mb2);
-
- /* C* extract and record EOP bit */
- if (split_packet) {
- /* and with mask to extract bits, flipping 1-0 */
- __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
- /* the staterr values are not in order, as the count
- * of dd bits doesn't care. However, for end of
- * packet tracking, we do care, so shuffle. This also
- * compresses the 32-bit values to 8-bit
- */
- eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
- /* store the resulting 32-bit value */
- *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
- split_packet += ICE_VPMD_DESCS_PER_LOOP;
- }
-
- /* C.3 calc available number of desc */
- staterr = _mm_and_si128(staterr, dd_check);
- staterr = _mm_packs_epi32(staterr, zero);
-
- /* D.3 copy final 1,2 data to rx_pkts */
- _mm_storeu_si128
- ((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
- pkt_mb1);
- _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
- pkt_mb0);
- ice_rx_desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
- /* C.4 calc available number of desc */
- var = rte_popcount64(_mm_cvtsi128_si64(staterr));
- nb_pkts_recd += var;
- if (likely(var != ICE_VPMD_DESCS_PER_LOOP))
- break;
- }
-
- /* 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));
- rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
-
- return nb_pkts_recd;
-}
-
-/**
- * Notice:
- * - nb_pkts < ICE_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > ICE_VPMD_RX_BURST, only scan ICE_VPMD_RX_BURST
- * numbers of DD bits
- */
-uint16_t
-ice_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- return _ice_recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
-}
-
-/**
- * vPMD receive routine that reassembles single burst of 32 scattered packets
- *
- * Notice:
- * - nb_pkts < ICE_VPMD_DESCS_PER_LOOP, just return no packet
- */
-static uint16_t
-ice_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- struct ci_rx_queue *rxq = rx_queue;
- uint8_t split_flags[ICE_VPMD_RX_BURST] = {0};
-
- /* get some new buffers */
- uint16_t nb_bufs = _ice_recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
- split_flags);
- if (nb_bufs == 0)
- return 0;
-
- /* happy day case, full burst + no packets to be joined */
- const uint64_t *split_fl64 = (uint64_t *)split_flags;
-
- if (!rxq->pkt_first_seg &&
- split_fl64[0] == 0 && split_fl64[1] == 0 &&
- split_fl64[2] == 0 && split_fl64[3] == 0)
- return nb_bufs;
-
- /* reassemble any packets that need reassembly*/
- unsigned int i = 0;
-
- if (!rxq->pkt_first_seg) {
- /* find the first split flag, and only reassemble then*/
- while (i < nb_bufs && !split_flags[i])
- i++;
- if (i == nb_bufs)
- return nb_bufs;
- rxq->pkt_first_seg = rx_pkts[i];
- }
- return i + ci_rx_reassemble_packets(&rx_pkts[i], nb_bufs - i, &split_flags[i],
- &rxq->pkt_first_seg, &rxq->pkt_last_seg, rxq->crc_len);
-}
-
-/**
- * vPMD receive routine that reassembles scattered packets.
- */
-uint16_t
-ice_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
- uint16_t nb_pkts)
-{
- uint16_t retval = 0;
-
- while (nb_pkts > ICE_VPMD_RX_BURST) {
- uint16_t burst;
-
- burst = ice_recv_scattered_burst_vec(rx_queue,
- rx_pkts + retval,
- ICE_VPMD_RX_BURST);
- retval += burst;
- nb_pkts -= burst;
- if (burst < ICE_VPMD_RX_BURST)
- return retval;
- }
-
- return retval + ice_recv_scattered_burst_vec(rx_queue,
- rx_pkts + retval,
- nb_pkts);
-}
-
-static inline void
-ice_vtx1(volatile struct ice_tx_desc *txdp, struct rte_mbuf *pkt,
- uint64_t flags)
-{
- uint64_t high_qw =
- (ICE_TX_DESC_DTYPE_DATA |
- ((uint64_t)flags << ICE_TXD_QW1_CMD_S) |
- ((uint64_t)pkt->data_len << ICE_TXD_QW1_TX_BUF_SZ_S));
-
- __m128i descriptor = _mm_set_epi64x(high_qw, rte_pktmbuf_iova(pkt));
- _mm_store_si128(RTE_CAST_PTR(__m128i *, txdp), descriptor);
-}
-
-static inline void
-ice_vtx(volatile struct ice_tx_desc *txdp, struct rte_mbuf **pkt,
- uint16_t nb_pkts, uint64_t flags)
-{
- int i;
-
- for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
- ice_vtx1(txdp, *pkt, flags);
-}
-
-static uint16_t
-ice_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
- uint16_t nb_pkts)
-{
- struct ci_tx_queue *txq = (struct ci_tx_queue *)tx_queue;
- volatile struct ice_tx_desc *txdp;
- struct ci_tx_entry_vec *txep;
- uint16_t n, nb_commit, tx_id;
- uint64_t flags = ICE_TD_CMD;
- uint64_t rs = ICE_TX_DESC_CMD_RS | ICE_TD_CMD;
- int i;
-
- /* cross rx_thresh boundary is not allowed */
- nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
-
- if (txq->nb_tx_free < txq->tx_free_thresh)
- ci_tx_free_bufs_vec(txq, ice_tx_desc_done, false);
-
- nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
- nb_commit = nb_pkts;
- if (unlikely(nb_pkts == 0))
- return 0;
-
- tx_id = txq->tx_tail;
- txdp = &txq->ice_tx_ring[tx_id];
- txep = &txq->sw_ring_vec[tx_id];
-
- txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
-
- n = (uint16_t)(txq->nb_tx_desc - tx_id);
- if (nb_commit >= n) {
- ci_tx_backlog_entry_vec(txep, tx_pkts, n);
-
- for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
- ice_vtx1(txdp, *tx_pkts, flags);
-
- ice_vtx1(txdp, *tx_pkts++, rs);
-
- nb_commit = (uint16_t)(nb_commit - n);
-
- tx_id = 0;
- txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
-
- /* avoid reach the end of ring */
- txdp = &txq->ice_tx_ring[tx_id];
- txep = &txq->sw_ring_vec[tx_id];
- }
-
- ci_tx_backlog_entry_vec(txep, tx_pkts, nb_commit);
-
- ice_vtx(txdp, tx_pkts, nb_commit, flags);
-
- tx_id = (uint16_t)(tx_id + nb_commit);
- if (tx_id > txq->tx_next_rs) {
- txq->ice_tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
- rte_cpu_to_le_64(((uint64_t)ICE_TX_DESC_CMD_RS) <<
- ICE_TXD_QW1_CMD_S);
- txq->tx_next_rs =
- (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
- }
-
- txq->tx_tail = tx_id;
-
- ICE_PCI_REG_WC_WRITE(txq->qtx_tail, txq->tx_tail);
-
- return nb_pkts;
-}
-
-uint16_t
-ice_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
- uint16_t nb_pkts)
-{
- uint16_t nb_tx = 0;
- struct ci_tx_queue *txq = (struct ci_tx_queue *)tx_queue;
-
- while (nb_pkts) {
- uint16_t ret, num;
-
- num = (uint16_t)RTE_MIN(nb_pkts, txq->tx_rs_thresh);
- ret = ice_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num);
- nb_tx += ret;
- nb_pkts -= ret;
- if (ret < num)
- break;
- }
-
- return nb_tx;
-}
-
-int __rte_cold
-ice_rxq_vec_setup(struct ci_rx_queue *rxq)
-{
- if (!rxq)
- return -1;
-
- rxq->rx_rel_mbufs = _ice_rx_queue_release_mbufs_vec;
- rxq->mbuf_initializer = ci_rxq_mbuf_initializer(rxq->port_id);
- return 0;
-}
-
-int __rte_cold
-ice_txq_vec_setup(struct ci_tx_queue *txq __rte_unused)
-{
- return 0;
-}
-
-int __rte_cold
-ice_rx_vec_dev_check(struct rte_eth_dev *dev)
-{
- return ice_rx_vec_dev_check_default(dev);
-}
-
-int __rte_cold
-ice_tx_vec_dev_check(struct rte_eth_dev *dev)
-{
- return ice_tx_vec_dev_check_default(dev);
-}
-
-enum rte_vect_max_simd
-ice_get_max_simd_bitwidth(void)
-{
- return ci_get_x86_max_simd_bitwidth();
-}
diff --git a/drivers/net/intel/ice/meson.build b/drivers/net/intel/ice/meson.build
index 8a20d0f297..293577676f 100644
--- a/drivers/net/intel/ice/meson.build
+++ b/drivers/net/intel/ice/meson.build
@@ -31,7 +31,6 @@ else
endif
if arch_subdir == 'x86'
- sources += files('ice_rxtx_vec_sse.c')
sources_avx2 += files('ice_rxtx_vec_avx2.c')
sources_avx512 += files('ice_rxtx_vec_avx512.c')
endif
--
2.34.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 4/4] doc: add release note entry for SSE removal
2025-08-25 12:35 [PATCH 0/4] Remove SSE from some Intel drivers Ciara Loftus
` (2 preceding siblings ...)
2025-08-25 12:35 ` [PATCH 3/4] net/ice: " Ciara Loftus
@ 2025-08-25 12:35 ` Ciara Loftus
2025-08-25 13:20 ` Bruce Richardson
3 siblings, 1 reply; 6+ messages in thread
From: Ciara Loftus @ 2025-08-25 12:35 UTC (permalink / raw)
To: dev; +Cc: Ciara Loftus
The SSE paths have been removed from the i40e, iavf and ice Intel
drivers. Add a release note documenting their removal.
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
doc/guides/rel_notes/release_25_11.rst | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/doc/guides/rel_notes/release_25_11.rst b/doc/guides/rel_notes/release_25_11.rst
index ccad6d89ff..d2749f2e4b 100644
--- a/doc/guides/rel_notes/release_25_11.rst
+++ b/doc/guides/rel_notes/release_25_11.rst
@@ -55,6 +55,11 @@ New Features
Also, make sure to start the actual text at the margin.
=======================================================
+* **Removed the SSE vector paths from some Intel drivers.**
+
+ The SSE path was not widely used, so it was removed from the i40e,
+ iavf and ice drivers.
+
Removed Items
-------------
--
2.34.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 4/4] doc: add release note entry for SSE removal
2025-08-25 12:35 ` [PATCH 4/4] doc: add release note entry for SSE removal Ciara Loftus
@ 2025-08-25 13:20 ` Bruce Richardson
0 siblings, 0 replies; 6+ messages in thread
From: Bruce Richardson @ 2025-08-25 13:20 UTC (permalink / raw)
To: Ciara Loftus; +Cc: dev
On Mon, Aug 25, 2025 at 12:35:48PM +0000, Ciara Loftus wrote:
> The SSE paths have been removed from the i40e, iavf and ice Intel
> drivers. Add a release note documenting their removal.
>
> Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
> ---
> doc/guides/rel_notes/release_25_11.rst | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/doc/guides/rel_notes/release_25_11.rst b/doc/guides/rel_notes/release_25_11.rst
> index ccad6d89ff..d2749f2e4b 100644
> --- a/doc/guides/rel_notes/release_25_11.rst
> +++ b/doc/guides/rel_notes/release_25_11.rst
> @@ -55,6 +55,11 @@ New Features
> Also, make sure to start the actual text at the margin.
> =======================================================
>
> +* **Removed the SSE vector paths from some Intel drivers.**
> +
> + The SSE path was not widely used, so it was removed from the i40e,
> + iavf and ice drivers.
> +
>
> Removed Items
> -------------
> --
I think the deprecation notice can be removed, too.
Also, like with the cover letter, it's worth explaining that the SSE paths
are replaced by the AVX2 and AVX-512 paths which offer better performance.
/Bruce
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-08-25 13:22 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2025-08-25 12:35 [PATCH 0/4] Remove SSE from some Intel drivers Ciara Loftus
2025-08-25 12:35 ` [PATCH 1/4] net/i40e: remove SSE vector path Ciara Loftus
2025-08-25 12:35 ` [PATCH 2/4] net/iavf: " Ciara Loftus
2025-08-25 12:35 ` [PATCH 3/4] net/ice: " Ciara Loftus
2025-08-25 12:35 ` [PATCH 4/4] doc: add release note entry for SSE removal Ciara Loftus
2025-08-25 13:20 ` Bruce Richardson
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