Re: [dpdk-dev] [PATCH v2] net/ice: enable advanced RSS

[Ye Xiaolong <xiaolong.ye@intel.com>]

On 09/09, Simei Su wrote:
>This patch supports the following features:
>  (1)inner header hash for tunnel packets, including comms package.
>  (2)symmetric hash by rte_flow RSS action.
>  (3)input set change by rte_flow RSS action.
>
>Signed-off-by: Simei Su <simei.su@intel.com>
>---
>This patch depends on the following patches on patchwork:
>  (1)https://patchwork.dpdk.org/patch/58546/
>      [2/4] net/ice: rework for generic flow enabling
>  (2)https://patchwork.dpdk.org/patch/57137/
>      [v2,1/2] ethdev: add symmetric toeplitz hash support
>  (3)https://patchwork.dpdk.org/patch/57138/
>      [v2,2/2] app/testpmd: add symmetric toeplitz hash support
>  (4)https://patchwork.dpdk.org/patch/57601/
>      [1/2] ethdev: extend RSS offload types
>  (5)https://patchwork.dpdk.org/patch/57602/
>      [2/2] app/testpmd: add RSS offload types extending support
>
> drivers/net/ice/ice_ethdev.c |   7 +
> drivers/net/ice/ice_hash.c   | 548 +++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 555 insertions(+)
> create mode 100644 drivers/net/ice/ice_hash.c
>
>diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
>index f5cc647..3766a32 100644
>--- a/drivers/net/ice/ice_ethdev.c
>+++ b/drivers/net/ice/ice_ethdev.c
>@@ -1874,6 +1874,7 @@ static int ice_init_rss(struct ice_pf *pf)
> 	uint16_t i, nb_q;
> 	int ret = 0;
> 	bool is_safe_mode = pf->adapter->is_safe_mode;
>+	uint32_t reg;
> 
> 	rss_conf = &dev->data->dev_conf.rx_adv_conf.rss_conf;
> 	nb_q = dev->data->nb_rx_queues;
>@@ -1917,6 +1918,12 @@ static int ice_init_rss(struct ice_pf *pf)
> 	if (ret)
> 		return -EINVAL;
> 
>+	/* Enable registers for symmetric_toeplitz function. */
>+	reg = ICE_READ_REG(hw, VSIQF_HASH_CTL(vsi->vsi_id));
>+	reg = (reg & (~VSIQF_HASH_CTL_HASH_SCHEME_M)) |
>+		(1 << VSIQF_HASH_CTL_HASH_SCHEME_S);
>+	ICE_WRITE_REG(hw, VSIQF_HASH_CTL(vsi->vsi_id), reg);
>+
> 	/* configure RSS for IPv4 with input set IPv4 src/dst */
> 	ret = ice_add_rss_cfg(hw, vsi->idx, ICE_FLOW_HASH_IPV4,
> 			      ICE_FLOW_SEG_HDR_IPV4, 0);
>diff --git a/drivers/net/ice/ice_hash.c b/drivers/net/ice/ice_hash.c
>new file mode 100644
>index 0000000..fbd7cd7
>--- /dev/null
>+++ b/drivers/net/ice/ice_hash.c
>@@ -0,0 +1,548 @@
>+/* SPDX-License-Identifier: BSD-3-Clause
>+ * Copyright(c) 2019 Intel Corporation
>+ */
>+
>+#include <sys/queue.h>
>+#include <stdio.h>
>+#include <errno.h>
>+#include <stdint.h>
>+#include <string.h>
>+#include <unistd.h>
>+#include <stdarg.h>
>+
>+#include <rte_debug.h>
>+#include <rte_ether.h>
>+#include <rte_ethdev_driver.h>
>+#include <rte_log.h>
>+#include <rte_malloc.h>
>+#include <rte_eth_ctrl.h>
>+#include <rte_tailq.h>
>+#include <rte_flow_driver.h>
>+
>+#include "ice_logs.h"
>+#include "base/ice_type.h"
>+#include "base/ice_flow.h"
>+#include "ice_ethdev.h"
>+#include "ice_generic_flow.h"
>+
>+#define ICE_ACTION_RSS_MAX_QUEUE_NUM 32
>+
>+static struct ice_pattern_match_item ice_hash_pattern_list_os[];
>+static struct ice_pattern_match_item ice_hash_pattern_list_comms[];

Above two forward declaration seems unnecessary. 

>+
>+struct rss_type_match_hdr {
>+	uint32_t hdr_mask;
>+	uint64_t eth_rss_hint;
>+};
>+
>+struct ice_hash_match_type {
>+	uint64_t hash_type;
>+	uint64_t hash_flds;
>+};
>+
>+struct rss_meta {
>+	uint32_t pkt_hdr;
>+	uint64_t hash_flds;
>+	uint8_t hash_function;
>+};
>+
>+static int
>+ice_hash_init(struct ice_adapter *ad);
>+
>+static int
>+ice_hash_create(struct ice_adapter *ad,
>+		struct rte_flow *flow,
>+		void *meta,
>+		struct rte_flow_error *error);
>+
>+static int
>+ice_hash_destroy(struct ice_adapter *ad,
>+		struct rte_flow *flow,
>+		struct rte_flow_error *error);
>+
>+static void
>+ice_hash_uninit(struct ice_adapter *ad);
>+
>+static void
>+ice_hash_free(struct rte_flow *flow);
>+
>+static int
>+ice_hash_parse_pattern_action(struct ice_adapter *ad,
>+			struct ice_pattern_match_item *array,
>+			uint32_t array_len,
>+			const struct rte_flow_item pattern[],
>+			const struct rte_flow_action actions[],
>+			void **meta,
>+			struct rte_flow_error *error);
>+
>+/* The first member is protocol header, the second member is ETH_RSS_*. */
>+const struct rss_type_match_hdr hint_0 = {
>+	ICE_FLOW_SEG_HDR_NONE,	0};
>+const struct rss_type_match_hdr hint_1 = {
>+	ICE_FLOW_SEG_HDR_IPV4,	ETH_RSS_IPV4};
>+const struct rss_type_match_hdr hint_2 = {
>+	ICE_FLOW_SEG_HDR_IPV4|ICE_FLOW_SEG_HDR_UDP, ETH_RSS_NONFRAG_IPV4_UDP};
>+const struct rss_type_match_hdr hint_3 = {
>+	ICE_FLOW_SEG_HDR_IPV4|ICE_FLOW_SEG_HDR_TCP, ETH_RSS_NONFRAG_IPV4_TCP};
>+const struct rss_type_match_hdr hint_4 = {
>+	ICE_FLOW_SEG_HDR_IPV4|ICE_FLOW_SEG_HDR_SCTP, ETH_RSS_NONFRAG_IPV4_SCTP};
>+const struct rss_type_match_hdr hint_5 = {
>+	ICE_FLOW_SEG_HDR_IPV6,	ETH_RSS_IPV6};
>+const struct rss_type_match_hdr hint_6 = {
>+	ICE_FLOW_SEG_HDR_IPV6|ICE_FLOW_SEG_HDR_UDP, ETH_RSS_NONFRAG_IPV6_UDP};
>+const struct rss_type_match_hdr hint_7 = {
>+	ICE_FLOW_SEG_HDR_IPV6|ICE_FLOW_SEG_HDR_TCP, ETH_RSS_NONFRAG_IPV6_TCP};
>+const struct rss_type_match_hdr hint_8 = {
>+	ICE_FLOW_SEG_HDR_IPV6|ICE_FLOW_SEG_HDR_SCTP, ETH_RSS_NONFRAG_IPV6_SCTP};
>+const struct rss_type_match_hdr hint_9 = {
>+	ICE_FLOW_SEG_HDR_GTPU_IP,	ETH_RSS_IPV4};
>+const struct rss_type_match_hdr hint_10 = {
>+	ICE_FLOW_SEG_HDR_PPPOE,	ETH_RSS_IPV4};
>+const struct rss_type_match_hdr hint_11 = {
>+	ICE_FLOW_SEG_HDR_PPPOE,	ETH_RSS_NONFRAG_IPV4_UDP};
>+const struct rss_type_match_hdr hint_12 = {
>+	ICE_FLOW_SEG_HDR_PPPOE,	ETH_RSS_NONFRAG_IPV4_TCP};
>+const struct rss_type_match_hdr hint_13 = {
>+	ICE_FLOW_SEG_HDR_PPPOE,	ETH_RSS_NONFRAG_IPV4_SCTP};
>+
>+/* Supported pattern for os default package. */
>+static struct ice_pattern_match_item ice_hash_pattern_list_os[] = {
>+	{pattern_eth_ipv4,	ICE_INSET_NONE,	(uint64_t)(&hint_1)},
>+	{pattern_eth_ipv4_udp,	ICE_INSET_NONE,	(uint64_t)(&hint_2)},
>+	{pattern_eth_ipv4_tcp,	ICE_INSET_NONE,	(uint64_t)(&hint_3)},
>+	{pattern_eth_ipv4_sctp,	ICE_INSET_NONE,	(uint64_t)(&hint_4)},
>+	{pattern_eth_ipv6,	ICE_INSET_NONE,	(uint64_t)(&hint_5)},
>+	{pattern_eth_ipv6_udp,	ICE_INSET_NONE,	(uint64_t)(&hint_6)},
>+	{pattern_eth_ipv6_tcp,	ICE_INSET_NONE,	(uint64_t)(&hint_7)},
>+	{pattern_eth_ipv6_sctp,	ICE_INSET_NONE,	(uint64_t)(&hint_8)},
>+	{pattern_empty,		ICE_INSET_NONE,	(uint64_t)(&hint_0)},
>+};
>+
>+/* Supported pattern for comms package. */
>+static struct ice_pattern_match_item ice_hash_pattern_list_comms[] = {
>+	{pattern_eth_ipv4,		 ICE_INSET_NONE,  (uint64_t)(&hint_1)},
>+	{pattern_eth_ipv4_udp,		 ICE_INSET_NONE,  (uint64_t)(&hint_2)},
>+	{pattern_eth_ipv4_tcp,		 ICE_INSET_NONE,  (uint64_t)(&hint_3)},
>+	{pattern_eth_ipv4_sctp,		 ICE_INSET_NONE,  (uint64_t)(&hint_4)},
>+	{pattern_eth_ipv6,		 ICE_INSET_NONE,  (uint64_t)(&hint_5)},
>+	{pattern_eth_ipv6_udp,		 ICE_INSET_NONE,  (uint64_t)(&hint_6)},
>+	{pattern_eth_ipv6_tcp,		 ICE_INSET_NONE,  (uint64_t)(&hint_7)},
>+	{pattern_eth_ipv6_sctp,		 ICE_INSET_NONE,  (uint64_t)(&hint_8)},
>+	{pattern_empty,			 ICE_INSET_NONE,  (uint64_t)(&hint_0)},
>+	{pattern_eth_ipv4_gtpu_ipv4,	 ICE_INSET_NONE,  (uint64_t)(&hint_9)},
>+	{pattern_eth_ipv4_gtpu_ipv4_udp, ICE_INSET_NONE,  (uint64_t)(&hint_9)},
>+	{pattern_eth_ipv4_gtpu_ipv4_tcp, ICE_INSET_NONE,  (uint64_t)(&hint_9)},
>+	{pattern_eth_pppoes_ipv4,	 ICE_INSET_NONE,  (uint64_t)(&hint_10)},
>+	{pattern_eth_pppoes_ipv4_udp,	 ICE_INSET_NONE,  (uint64_t)(&hint_11)},
>+	{pattern_eth_pppoes_ipv4_tcp,	 ICE_INSET_NONE,  (uint64_t)(&hint_12)},
>+	{pattern_eth_pppoes_ipv4_sctp,	 ICE_INSET_NONE,  (uint64_t)(&hint_13)},
>+};
>+
>+/**
>+ * The first member is input set combination,
>+ * the second member is hash fields.
>+ */
>+struct ice_hash_match_type ice_hash_type_list[] = {
>+	{ETH_RSS_IPV4|ETH_RSS_L3_SRC_ONLY,					BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)},
>+	{ETH_RSS_IPV4|ETH_RSS_L3_DST_ONLY,					BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)},
>+	{ETH_RSS_IPV4,								ICE_FLOW_HASH_IPV4},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L3_SRC_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|ICE_FLOW_HASH_UDP_PORT},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L3_DST_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|ICE_FLOW_HASH_UDP_PORT},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L4_SRC_ONLY,				ICE_FLOW_HASH_IPV4|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_UDP|ETH_RSS_L4_DST_ONLY,				ICE_FLOW_HASH_IPV4|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_UDP,						ICE_HASH_UDP_IPV4},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L3_SRC_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|ICE_FLOW_HASH_TCP_PORT},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L3_DST_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|ICE_FLOW_HASH_TCP_PORT},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L4_SRC_ONLY,				ICE_FLOW_HASH_IPV4|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_TCP|ETH_RSS_L4_DST_ONLY,				ICE_FLOW_HASH_IPV4|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_TCP,						ICE_HASH_TCP_IPV4},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L3_SRC_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)|ICE_FLOW_HASH_SCTP_PORT},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L3_DST_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)|ICE_FLOW_HASH_SCTP_PORT},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L4_SRC_ONLY,				ICE_FLOW_HASH_IPV4|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP|ETH_RSS_L4_DST_ONLY,				ICE_FLOW_HASH_IPV4|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV4_SCTP,						ICE_HASH_SCTP_IPV4},
>+	{ETH_RSS_IPV6|ETH_RSS_L3_SRC_ONLY,					BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)},
>+	{ETH_RSS_IPV6|ETH_RSS_L3_DST_ONLY,					BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)},
>+	{ETH_RSS_IPV6,								ICE_FLOW_HASH_IPV6},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L3_SRC_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|ICE_FLOW_HASH_UDP_PORT},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L3_DST_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|ICE_FLOW_HASH_UDP_PORT},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L4_SRC_ONLY,				ICE_FLOW_HASH_IPV6|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_UDP|ETH_RSS_L4_DST_ONLY,				ICE_FLOW_HASH_IPV6|BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_UDP,						ICE_HASH_UDP_IPV6},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L3_SRC_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|ICE_FLOW_HASH_TCP_PORT},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L3_DST_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|ICE_FLOW_HASH_TCP_PORT},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L4_SRC_ONLY,				ICE_FLOW_HASH_IPV6|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_TCP|ETH_RSS_L4_DST_ONLY,				ICE_FLOW_HASH_IPV6|BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_TCP,						ICE_HASH_TCP_IPV6},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L3_SRC_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L3_SRC_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)|ICE_FLOW_HASH_SCTP_PORT},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_SRC_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L3_DST_ONLY|ETH_RSS_L4_DST_ONLY,	BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L3_DST_ONLY,				BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)|ICE_FLOW_HASH_SCTP_PORT},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L4_SRC_ONLY,				ICE_FLOW_HASH_IPV6|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP|ETH_RSS_L4_DST_ONLY,				ICE_FLOW_HASH_IPV6|BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
>+	{ETH_RSS_NONFRAG_IPV6_SCTP,						ICE_HASH_SCTP_IPV6},
>+};
>+
>+static struct ice_flow_engine ice_hash_engine = {
>+	.init = ice_hash_init,
>+	.create = ice_hash_create,
>+	.destroy = ice_hash_destroy,
>+	.uninit = ice_hash_uninit,
>+	.free = ice_hash_free,
>+	.type = ICE_FLOW_ENGINE_HASH,
>+};
>+
>+/* Register parser for os package. */
>+static struct ice_flow_parser ice_hash_parser_os = {
>+	.engine = &ice_hash_engine,
>+	.array = ice_hash_pattern_list_os,
>+	.array_len = RTE_DIM(ice_hash_pattern_list_os),
>+	.parse_pattern_action = ice_hash_parse_pattern_action,
>+	.stage = ICE_FLOW_STAGE_RSS,
>+};
>+
>+/* Register parser for comms package. */
>+static struct ice_flow_parser ice_hash_parser_comms = {
>+	.engine = &ice_hash_engine,
>+	.array = ice_hash_pattern_list_comms,
>+	.array_len = RTE_DIM(ice_hash_pattern_list_comms),
>+	.parse_pattern_action = ice_hash_parse_pattern_action,
>+	.stage = ICE_FLOW_STAGE_RSS,
>+};
>+
>+RTE_INIT(ice_hash_init_log)

I don't think this function has something to do with 'log', better to use name
like ice_hash_engine_init.

>+{
>+	struct ice_flow_engine *engine = &ice_hash_engine;
>+	ice_register_flow_engine(engine);
>+}
>+
>+static int
>+ice_hash_init(struct ice_adapter *ad)
>+{
>+	int ret = 0;

Unnecessary initialization for the ret.

>+
>+	if (ad->active_pkg_type == ICE_PKG_TYPE_OS_DEFAULT) {
>+		struct ice_flow_parser *parser = &ice_hash_parser_os;
>+		ret = ice_register_parser(parser, ad);
>+	} else if (ad->active_pkg_type == ICE_PKG_TYPE_COMMS) {
>+		struct ice_flow_parser *parser = &ice_hash_parser_comms;
>+		ret = ice_register_parser(parser, ad);
>+	}
>+

What about:

	struct ice_flow_parser *parser; 

	if (ad->active_pkg_type == ICE_PKG_TYPE_OS_DEFAULT) {
		parser = &ice_hash_parser_os;
	} else if (ad->active_pkg_type == ICE_PKG_TYPE_COMMS) {
		parser = &ice_hash_parser_comms;
	}

	return ice_register_parser(parser, ad);

>+	return ret;
>+}
>+
>+static int
>+ice_hash_check_inset(const struct rte_flow_item pattern[],
>+		struct rte_flow_error *error)
>+{
>+	const struct rte_flow_item *item = pattern;
>+
>+	for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
>+		if (item->last) {
>+			rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_ITEM, item,
>+					"Not support range");
>+			return -rte_errno;
>+		}
>+
>+		/* Ignore spec and mask. */
>+		if (item->spec || item->mask) {
>+			rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_ITEM, item,
>+					"Invalid mask.");

"Invalid spec/mask."

>+			return -rte_errno;
>+		}
>+	}
>+
>+	return 0;
>+}
>+
>+static int
>+ice_hash_parse_action(struct ice_pattern_match_item *pattern_match_item,
>+		const struct rte_flow_action actions[],
>+		void **meta,
>+		struct rte_flow_error *error)
>+{
>+	const struct rte_flow_action *action;
>+	enum rte_flow_action_type action_type;
>+	const struct rte_flow_action_rss *rss;
>+	struct rss_type_match_hdr *m = (struct rss_type_match_hdr *)
>+				(pattern_match_item->meta);
>+	uint32_t type_list_len = RTE_DIM(ice_hash_type_list);
>+	struct ice_hash_match_type *type_match_item;
>+
>+	/* Supported action is RSS. */
>+	for (action = actions; action->type !=
>+		RTE_FLOW_ACTION_TYPE_END; action++) {
>+		action_type = action->type;
>+		switch (action_type) {
>+		case RTE_FLOW_ACTION_TYPE_RSS:
>+			rss = action->conf;
>+			uint16_t i;
>+
>+			/* Check if pattern is empty. */
>+			if (((pattern_match_item->pattern_list) !=
>+				pattern_empty) && (rss->func ==
>+				RTE_ETH_HASH_FUNCTION_SIMPLE_XOR))
>+				return rte_flow_error_set(error, ENOTSUP,
>+					RTE_FLOW_ERROR_TYPE_ACTION, action,
>+					"Not supported flow");
>+
>+			/* Check if rss types match pattern. */
>+			if (rss->func != RTE_ETH_HASH_FUNCTION_SIMPLE_XOR) {
>+				if (((rss->types & ETH_RSS_IPV4) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_NONFRAG_IPV4_UDP) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_NONFRAG_IPV4_TCP) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_NONFRAG_IPV4_SCTP) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_IPV6) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_NONFRAG_IPV6_UDP) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_NONFRAG_IPV6_TCP) != m->eth_rss_hint) ||
>+				((rss->types & ETH_RSS_NONFRAG_IPV6_SCTP) != m->eth_rss_hint))
>+					return rte_flow_error_set(error,
>+					ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
>+					action, "Not supported RSS types");
>+			}
>+
>+			if (rss->level)
>+				return rte_flow_error_set(error, ENOTSUP,
>+					RTE_FLOW_ERROR_TYPE_ACTION, action,
>+					"a nonzero RSS encapsulation level is not supported");
>+
>+			if (rss->key_len == 0)
>+				return rte_flow_error_set(error, ENOTSUP,
>+					RTE_FLOW_ERROR_TYPE_ACTION, action,
>+					"RSS hash key_len mustn't be 0");
>+
>+			if ((rss->queue_num) > ICE_ACTION_RSS_MAX_QUEUE_NUM)
>+				return rte_flow_error_set(error, ENOTSUP,
>+					RTE_FLOW_ERROR_TYPE_ACTION, action,
>+					"too many queues for RSS context");
>+
>+			/* Check hash function and save it to rss_meta. */
>+			if (rss->func ==
>+				RTE_ETH_HASH_FUNCTION_SIMPLE_XOR)
>+				((struct rss_meta *)*meta)->hash_function =
>+				RTE_ETH_HASH_FUNCTION_SIMPLE_XOR;
>+
>+			if (rss->func ==
>+				RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ)
>+				((struct rss_meta *)*meta)->hash_function =
>+				RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ;
>+
>+			type_match_item = rte_zmalloc("ice_type_match_item",
>+					sizeof(struct ice_hash_match_type), 0);
>+			if (!type_match_item) {
>+				rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
>+					"No memory for type_match_item");
>+				return -ENOMEM;
>+			}
>+
>+			/* Find matched hash fields according to hash type. */
>+			for (i = 0; i < type_list_len; i++) {
>+				if (rss->types ==
>+					ice_hash_type_list[i].hash_type) {
>+					type_match_item->hash_type =
>+						ice_hash_type_list[i].hash_type;
>+					type_match_item->hash_flds =
>+						ice_hash_type_list[i].hash_flds;
>+				}
>+			}
>+
>+			/* Save hash fileds to rss_meta. */
>+			((struct rss_meta *)*meta)->hash_flds =
>+					type_match_item->hash_flds;
>+
>+			rte_free(type_match_item);
>+			break;
>+
>+		case RTE_FLOW_ACTION_TYPE_END:
>+			return 0;
>+			break;
>+
>+		default:
>+			rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_ACTION, action,
>+					"Invalid action.");
>+			return -rte_errno;
>+		}
>+	}
>+
>+	return 0;
>+}
>+
>+static int
>+ice_hash_parse_pattern_action(__rte_unused struct ice_adapter *ad,
>+			struct ice_pattern_match_item *array,
>+			uint32_t array_len,
>+			const struct rte_flow_item pattern[],
>+			const struct rte_flow_action actions[],
>+			void **meta,
>+			struct rte_flow_error *error)
>+{
>+	int ret = 0;
>+	struct ice_pattern_match_item *pattern_match_item = NULL;
>+	struct rss_meta *rss_meta_ptr = NULL;

Unnecessary initializations.

>+
>+	rss_meta_ptr = rte_zmalloc(NULL, sizeof(*rss_meta_ptr), 0);
>+	if (!rss_meta_ptr) {
>+		rte_flow_error_set(error, EINVAL,
>+				RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
>+				"No memory for rss_meta_ptr");
>+		return -ENOMEM;
>+	}
>+
>+	/* Check rss supported pattern and find matched pattern. */
>+	pattern_match_item = ice_search_pattern_match_item(pattern,
>+					array, array_len, error);
>+	if (!pattern_match_item)
>+		return -rte_errno;
>+
>+	ret = ice_hash_check_inset(pattern, error);
>+	if (ret)
>+		return -rte_errno;
>+
>+	/* Save protocol header to rss_meta. */
>+	*meta = rss_meta_ptr;
>+	((struct rss_meta *)*meta)->pkt_hdr = ((struct rss_type_match_hdr *)
>+		(pattern_match_item->meta))->hdr_mask;
>+
>+	/* Check rss action. */
>+	ret = ice_hash_parse_action(pattern_match_item, actions, meta, error);
>+	if (ret)
>+		return -rte_errno;
>+
>+	rte_free(pattern_match_item);
>+
>+	return 0;
>+}
>+
>+static int
>+ice_hash_create(struct ice_adapter *ad,
>+		struct rte_flow *flow,
>+		void *meta,
>+		__rte_unused struct rte_flow_error *error)
>+{
>+	struct ice_pf *pf = &ad->pf;
>+	struct ice_hw *hw = ICE_PF_TO_HW(pf);
>+	struct ice_vsi *vsi = pf->main_vsi;
>+	int ret	= 0;
>+	uint32_t reg;
>+	struct ice_rss_cfg *filter_ptr;
>+
>+	uint32_t headermask = ((struct rss_meta *)meta)->pkt_hdr;
>+	uint64_t hash_field = ((struct rss_meta *)meta)->hash_flds;
>+	uint8_t hash_function = ((struct rss_meta *)meta)->hash_function;
>+
>+	filter_ptr = rte_zmalloc("ice_rss_filter",
>+				sizeof(struct ice_rss_cfg), 0);
>+	if (!filter_ptr) {
>+		rte_flow_error_set(error, EINVAL,
>+				RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
>+				"No memory for filter_ptr");
>+		return -ENOMEM;
>+	}
>+
>+	if (hash_function == RTE_ETH_HASH_FUNCTION_SIMPLE_XOR) {
>+		/* Enable registers for simple_xor hash function. */
>+		reg = ICE_READ_REG(hw, VSIQF_HASH_CTL(vsi->vsi_id));
>+		reg = (reg & (~VSIQF_HASH_CTL_HASH_SCHEME_M)) |
>+			(2 << VSIQF_HASH_CTL_HASH_SCHEME_S);
>+		ICE_WRITE_REG(hw, VSIQF_HASH_CTL(vsi->vsi_id), reg);
>+
>+		filter_ptr->symm = hash_function;
>+
>+		goto out;
>+	} else if (hash_function == RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ) {
>+		ret = ice_add_rss_cfg(hw, vsi->idx, hash_field, headermask, 1);
>+		if (ret)
>+			rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
>+					"rss flow create fail");

Do we need to error out here?

>+	} else {
>+		ret = ice_add_rss_cfg(hw, vsi->idx, hash_field, headermask, 0);
>+		if (ret)
>+			rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
>+					"rss flow create fail");

Ditto.

>+	}
>+
>+	filter_ptr->packet_hdr = headermask;
>+	filter_ptr->hashed_flds = hash_field;
>+
>+out:
>+	flow->rule = filter_ptr;
>+	rte_free(meta);
>+	return 0;
>+}
>+
>+static int
>+ice_hash_destroy(struct ice_adapter *ad,
>+		struct rte_flow *flow,
>+		__rte_unused struct rte_flow_error *error)

It's actually used in this function, so just remove the __rte_unused tag.

>+{
>+	struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(ad);
>+	struct ice_hw *hw = ICE_PF_TO_HW(pf);
>+	struct ice_vsi *vsi = pf->main_vsi;
>+	int ret = 0;

Unnecessary initialization.

>+	uint32_t reg;
>+	struct ice_rss_cfg *filter_ptr;
>+
>+	filter_ptr = (struct ice_rss_cfg *)flow->rule;
>+
>+	if (filter_ptr->symm == RTE_ETH_HASH_FUNCTION_SIMPLE_XOR) {
>+		/* Return to symmetric_toeplitz state. */
>+		reg = ICE_READ_REG(hw, VSIQF_HASH_CTL(vsi->vsi_id));
>+		reg = (reg & (~VSIQF_HASH_CTL_HASH_SCHEME_M)) |
>+			(1 << VSIQF_HASH_CTL_HASH_SCHEME_S);
>+		ICE_WRITE_REG(hw, VSIQF_HASH_CTL(vsi->vsi_id), reg);
>+	} else {
>+		ret = ice_rem_vsi_rss_cfg(hw, vsi->idx);
>+		if (ret)
>+			rte_flow_error_set(error, EINVAL,
>+					RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
>+					"rss flow destroy fail");

If ice_rem_vsi_rss_cfg fails here, do we still need to proceed to free the flow
other than return error here?

>+	}
>+
>+	rte_free(filter_ptr);
>+
>+	return 0;
>+}
>+
>+static void
>+ice_hash_uninit(struct ice_adapter *ad)
>+{
>+	if (ad->active_pkg_type == ICE_PKG_TYPE_OS_DEFAULT)
>+		ice_unregister_parser(&ice_hash_parser_os, ad);
>+	else if (ad->active_pkg_type == ICE_PKG_TYPE_COMMS)
>+		ice_unregister_parser(&ice_hash_parser_comms, ad);
>+}
>+
>+static void
>+ice_hash_free(struct rte_flow *flow)
>+{
>+	rte_free(flow->rule);
>+}
>-- 
>1.8.3.1
>