[PATCH v1 15/50] net/ntnic: add hasher (HSH) flow module

[Serhii Iliushyk <sil-plv@napatech.com>]

From: Oleksandr Kolomeiets <okl-plv@napatech.com>

The Hasher module calculates a configurable hash value
to be used internally by the FPGA.
The module support both Toeplitz and NT-hash.

Signed-off-by: Oleksandr Kolomeiets <okl-plv@napatech.com>
---
 drivers/net/ntnic/include/hw_mod_backend.h    |  16 ++
 drivers/net/ntnic/include/hw_mod_hsh_v5.h     |  46 ++++
 drivers/net/ntnic/meson.build                 |   1 +
 .../nthw/flow_api/flow_backend/flow_backend.c |  80 ++++++
 .../ntnic/nthw/flow_filter/flow_nthw_hsh.c    | 260 ++++++++++++++++++
 .../ntnic/nthw/flow_filter/flow_nthw_hsh.h    |  87 ++++++
 .../ntnic/nthw/supported/nthw_fpga_mod_defs.h |   1 +
 .../ntnic/nthw/supported/nthw_fpga_reg_defs.h |   1 +
 .../nthw/supported/nthw_fpga_reg_defs_hsh.h   |  50 ++++
 9 files changed, 542 insertions(+)
 create mode 100644 drivers/net/ntnic/include/hw_mod_hsh_v5.h
 create mode 100644 drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.c
 create mode 100644 drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.h
 create mode 100644 drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs_hsh.h

diff --git a/drivers/net/ntnic/include/hw_mod_backend.h b/drivers/net/ntnic/include/hw_mod_backend.h
index 133a61fe9c..a4c3336e13 100644
--- a/drivers/net/ntnic/include/hw_mod_backend.h
+++ b/drivers/net/ntnic/include/hw_mod_backend.h
@@ -12,6 +12,7 @@
 #include "hw_mod_cat_v21.h"
 #include "hw_mod_flm_v25.h"
 #include "hw_mod_km_v7.h"
+#include "hw_mod_hsh_v5.h"
 
 #define MAX_PHYS_ADAPTERS 8
 
@@ -75,6 +76,16 @@ struct flm_func_s {
 	};
 };
 
+struct hsh_func_s {
+	COMMON_FUNC_INFO_S;
+	uint32_t nb_rcp;/* number of HSH recipes supported by FPGA */
+	/* indication if Toeplitz is supported by FPGA, i.e. 0 - unsupported, 1 - supported */
+	uint32_t toeplitz;
+	union {
+		struct hw_mod_hsh_v5_s v5;
+	};
+};
+
 enum debug_mode_e {
 	FLOW_BACKEND_DEBUG_MODE_NONE = 0x0000,
 	FLOW_BACKEND_DEBUG_MODE_WRITE = 0x0001
@@ -180,6 +191,11 @@ struct flow_api_backend_ops {
 		uint32_t *inf_data, uint32_t inf_size,
 		uint32_t *inf_word_cnt, uint32_t *sta_data,
 		uint32_t sta_size, uint32_t *sta_word_cnt);
+
+	/* HSH */
+	bool (*get_hsh_present)(void *dev);
+	uint32_t (*get_hsh_version)(void *dev);
+	int (*hsh_rcp_flush)(void *dev, const struct hsh_func_s *hsh, int category, int cnt);
 };
 
 struct flow_api_backend_s {
diff --git a/drivers/net/ntnic/include/hw_mod_hsh_v5.h b/drivers/net/ntnic/include/hw_mod_hsh_v5.h
new file mode 100644
index 0000000000..cdab15e6c2
--- /dev/null
+++ b/drivers/net/ntnic/include/hw_mod_hsh_v5.h
@@ -0,0 +1,46 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef _HW_MOD_HSH_V5_H_
+#define _HW_MOD_HSH_V5_H_
+
+#include <stdint.h>
+
+#define HSH_RCP_MAC_PORT_MASK_SIZE 4
+#define HSH_RCP_WORD_MASK_SIZE 10
+/* Toeplitz hash key size in 32-bit words, e.g. 10 words means 320 bits, i.e. 40 Bytes */
+#define HSH_RCP_KEY_SIZE 10
+
+struct hsh_v5_rcp_s {
+	uint32_t load_dist_type;
+	uint32_t mac_port_mask[HSH_RCP_MAC_PORT_MASK_SIZE];
+	uint32_t sort;
+	uint32_t qw0_pe;
+	int32_t qw0_ofs;
+	uint32_t qw4_pe;
+	int32_t qw4_ofs;
+	uint32_t w8_pe;
+	int32_t w8_ofs;
+	uint32_t w8_sort;
+	uint32_t w9_pe;
+	int32_t w9_ofs;
+	uint32_t w9_sort;
+	uint32_t w9_p;
+	uint32_t p_mask;
+	uint32_t word_mask[HSH_RCP_WORD_MASK_SIZE];
+	uint32_t seed;
+	uint32_t tnl_p;
+	uint32_t hsh_valid;
+	uint32_t hsh_type;
+	uint32_t toeplitz;	/* Toeplitz enabled / disabled */
+	uint32_t k[HSH_RCP_KEY_SIZE];	/* Toeplitz hash key */
+	uint32_t auto_ipv4_mask;
+};
+
+struct hw_mod_hsh_v5_s {
+	struct hsh_v5_rcp_s *rcp;
+};
+
+#endif	/* _HW_MOD_HSH_V5_H_ */
diff --git a/drivers/net/ntnic/meson.build b/drivers/net/ntnic/meson.build
index 1ca34d8b47..de6777f4d3 100644
--- a/drivers/net/ntnic/meson.build
+++ b/drivers/net/ntnic/meson.build
@@ -48,6 +48,7 @@ sources = files(
         'nthw/flow_api/flow_filter.c',
         'nthw/flow_filter/flow_nthw_cat.c',
         'nthw/flow_filter/flow_nthw_flm.c',
+        'nthw/flow_filter/flow_nthw_hsh.c',
         'nthw/flow_filter/flow_nthw_ifr.c',
         'nthw/flow_filter/flow_nthw_info.c',
         'nthw/flow_filter/flow_nthw_km.c',
diff --git a/drivers/net/ntnic/nthw/flow_api/flow_backend/flow_backend.c b/drivers/net/ntnic/nthw/flow_api/flow_backend/flow_backend.c
index 5d2c09d52a..86a7da2334 100644
--- a/drivers/net/ntnic/nthw/flow_api/flow_backend/flow_backend.c
+++ b/drivers/net/ntnic/nthw/flow_api/flow_backend/flow_backend.c
@@ -10,6 +10,7 @@
 #include "flow_nthw_cat.h"
 #include "flow_nthw_km.h"
 #include "flow_nthw_flm.h"
+#include "flow_nthw_hsh.h"
 #include "ntnic_mod_reg.h"
 #include "nthw_fpga_model.h"
 #include "hw_mod_backend.h"
@@ -28,6 +29,7 @@ static struct backend_dev_s {
 	struct cat_nthw *p_cat_nthw;
 	struct km_nthw *p_km_nthw;
 	struct flm_nthw *p_flm_nthw;
+	struct hsh_nthw *p_hsh_nthw;
 	struct ifr_nthw *p_ifr_nthw;    /* TPE module */
 } be_devs[MAX_PHYS_ADAPTERS];
 
@@ -1260,6 +1262,69 @@ static int flm_inf_sta_data_update(void *be_dev, const struct flm_func_s *flm, u
 	return ret;
 }
 
+/*
+ * HSH
+ */
+
+static bool hsh_get_present(void *be_dev)
+{
+	struct backend_dev_s *be = (struct backend_dev_s *)be_dev;
+	return be->p_hsh_nthw != NULL;
+}
+
+static uint32_t hsh_get_version(void *be_dev)
+{
+	struct backend_dev_s *be = (struct backend_dev_s *)be_dev;
+	return (uint32_t)((nthw_module_get_major_version(be->p_hsh_nthw->m_hsh) << 16) |
+			(nthw_module_get_minor_version(be->p_hsh_nthw->m_hsh) & 0xffff));
+}
+
+static int hsh_rcp_flush(void *be_dev, const struct hsh_func_s *hsh, int category, int cnt)
+{
+	struct backend_dev_s *be = (struct backend_dev_s *)be_dev;
+	CHECK_DEBUG_ON(be, hsh, be->p_hsh_nthw);
+
+	if (hsh->ver == 5) {
+		hsh_nthw_rcp_cnt(be->p_hsh_nthw, 1);
+
+		for (int i = 0; i < cnt; i++) {
+			hsh_nthw_rcp_select(be->p_hsh_nthw, category + i);
+			hsh_nthw_rcp_load_dist_type(be->p_hsh_nthw,
+				hsh->v5.rcp[category + i].load_dist_type);
+			hsh_nthw_rcp_mac_port_mask(be->p_hsh_nthw,
+				hsh->v5.rcp[category + i].mac_port_mask);
+			hsh_nthw_rcp_sort(be->p_hsh_nthw, hsh->v5.rcp[category + i].sort);
+			hsh_nthw_rcp_qw0_pe(be->p_hsh_nthw, hsh->v5.rcp[category + i].qw0_pe);
+			hsh_nthw_rcp_qw0_ofs(be->p_hsh_nthw, hsh->v5.rcp[category + i].qw0_ofs);
+			hsh_nthw_rcp_qw4_pe(be->p_hsh_nthw, hsh->v5.rcp[category + i].qw4_pe);
+			hsh_nthw_rcp_qw4_ofs(be->p_hsh_nthw, hsh->v5.rcp[category + i].qw4_ofs);
+			hsh_nthw_rcp_w8_pe(be->p_hsh_nthw, hsh->v5.rcp[category + i].w8_pe);
+			hsh_nthw_rcp_w8_ofs(be->p_hsh_nthw, hsh->v5.rcp[category + i].w8_ofs);
+			hsh_nthw_rcp_w8_sort(be->p_hsh_nthw, hsh->v5.rcp[category + i].w8_sort);
+			hsh_nthw_rcp_w9_pe(be->p_hsh_nthw, hsh->v5.rcp[category + i].w9_pe);
+			hsh_nthw_rcp_w9_ofs(be->p_hsh_nthw, hsh->v5.rcp[category + i].w9_ofs);
+			hsh_nthw_rcp_w9_sort(be->p_hsh_nthw, hsh->v5.rcp[category + i].w9_sort);
+			hsh_nthw_rcp_w9_p(be->p_hsh_nthw, hsh->v5.rcp[category + i].w9_p);
+			hsh_nthw_rcp_p_mask(be->p_hsh_nthw, hsh->v5.rcp[category + i].p_mask);
+			hsh_nthw_rcp_word_mask(be->p_hsh_nthw,
+				hsh->v5.rcp[category + i].word_mask);
+			hsh_nthw_rcp_seed(be->p_hsh_nthw, hsh->v5.rcp[category + i].seed);
+			hsh_nthw_rcp_tnl_p(be->p_hsh_nthw, hsh->v5.rcp[category + i].tnl_p);
+			hsh_nthw_rcp_hsh_valid(be->p_hsh_nthw,
+				hsh->v5.rcp[category + i].hsh_valid);
+			hsh_nthw_rcp_hsh_type(be->p_hsh_nthw, hsh->v5.rcp[category + i].hsh_type);
+			hsh_nthw_rcp_toeplitz(be->p_hsh_nthw, hsh->v5.rcp[category + i].toeplitz);
+			hsh_nthw_rcp_k(be->p_hsh_nthw, hsh->v5.rcp[category + i].k);
+			hsh_nthw_rcp_auto_ipv4_mask(be->p_hsh_nthw,
+				hsh->v5.rcp[category + i].auto_ipv4_mask);
+			hsh_nthw_rcp_flush(be->p_hsh_nthw);
+		}
+	}
+
+	CHECK_DEBUG_OFF(hsh, be->p_hsh_nthw);
+	return 0;
+}
+
 /*
  * DBS
  */
@@ -1369,6 +1434,10 @@ const struct flow_api_backend_ops flow_be_iface = {
 	flm_stat_update,
 	flm_lrn_data_flush,
 	flm_inf_sta_data_update,
+
+	hsh_get_present,
+	hsh_get_version,
+	hsh_rcp_flush,
 };
 
 const struct flow_api_backend_ops *bin_flow_backend_init(nthw_fpga_t *p_fpga, void **dev)
@@ -1419,6 +1488,16 @@ const struct flow_api_backend_ops *bin_flow_backend_init(nthw_fpga_t *p_fpga, vo
 		be_devs[physical_adapter_no].p_ifr_nthw = NULL;
 	}
 
+	/* Init nthw HSH */
+	if (hsh_nthw_init(NULL, p_fpga, physical_adapter_no) == 0) {
+		struct hsh_nthw *phshnthw = hsh_nthw_new();
+		hsh_nthw_init(phshnthw, p_fpga, physical_adapter_no);
+		be_devs[physical_adapter_no].p_hsh_nthw = phshnthw;
+
+	} else {
+		be_devs[physical_adapter_no].p_hsh_nthw = NULL;
+	}
+
 	be_devs[physical_adapter_no].adapter_no = physical_adapter_no;
 	*dev = (void *)&be_devs[physical_adapter_no];
 
@@ -1432,6 +1511,7 @@ static void bin_flow_backend_done(void *dev)
 	cat_nthw_delete(be_dev->p_cat_nthw);
 	km_nthw_delete(be_dev->p_km_nthw);
 	flm_nthw_delete(be_dev->p_flm_nthw);
+	hsh_nthw_delete(be_dev->p_hsh_nthw);
 }
 
 static const struct flow_backend_ops ops = {
diff --git a/drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.c b/drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.c
new file mode 100644
index 0000000000..c878c4e54b
--- /dev/null
+++ b/drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.c
@@ -0,0 +1,260 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "ntlog.h"
+
+#include "nthw_drv.h"
+#include "nthw_register.h"
+
+#include "flow_nthw_hsh.h"
+
+void hsh_nthw_set_debug_mode(struct hsh_nthw *p, unsigned int n_debug_mode)
+{
+	nthw_module_set_debug_mode(p->m_hsh, n_debug_mode);
+}
+
+struct hsh_nthw *hsh_nthw_new(void)
+{
+	struct hsh_nthw *p = malloc(sizeof(struct hsh_nthw));
+
+	if (p)
+		(void)memset(p, 0, sizeof(*p));
+
+	return p;
+}
+
+void hsh_nthw_delete(struct hsh_nthw *p)
+{
+	if (p) {
+		(void)memset(p, 0, sizeof(*p));
+		free(p);
+	}
+}
+
+int hsh_nthw_init(struct hsh_nthw *p, nthw_fpga_t *p_fpga, int n_instance)
+{
+	const char *const p_adapter_id_str = p_fpga->p_fpga_info->mp_adapter_id_str;
+	nthw_module_t *p_mod = nthw_fpga_query_module(p_fpga, MOD_HSH, n_instance);
+	assert(n_instance >= 0 && n_instance < 256);
+
+	if (p == NULL)
+		return p_mod == NULL ? -1 : 0;
+
+	if (p_mod == NULL) {
+		NT_LOG(ERR, NTHW, "%s: Hsh %d: no such instance\n", p_adapter_id_str, n_instance);
+		return -1;
+	}
+
+	p->mp_fpga = p_fpga;
+	p->m_physical_adapter_no = (uint8_t)n_instance;
+	p->m_hsh = p_mod;
+
+	/* RCP */
+	p->mp_rcp_ctrl = nthw_module_get_register(p->m_hsh, HSH_RCP_CTRL);
+	p->mp_rcp_addr = nthw_register_get_field(p->mp_rcp_ctrl, HSH_RCP_CTRL_ADR);
+	p->mp_rcp_cnt = nthw_register_get_field(p->mp_rcp_ctrl, HSH_RCP_CTRL_CNT);
+	p->mp_rcp_data = nthw_module_get_register(p->m_hsh, HSH_RCP_DATA);
+	p->mp_rcp_data_load_dist_type =
+		nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_LOAD_DIST_TYPE);
+	p->mp_rcp_data_mac_port_mask =
+		nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_MAC_PORT_MASK);
+	p->mp_rcp_data_sort = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_SORT);
+	p->mp_rcp_data_qw0_pe = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_QW0_PE);
+	p->mp_rcp_data_qw0_ofs = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_QW0_OFS);
+	p->mp_rcp_data_qw4_pe = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_QW4_PE);
+	p->mp_rcp_data_qw4_ofs = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_QW4_OFS);
+	p->mp_rcp_data_w8_pe = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W8_PE);
+	p->mp_rcp_data_w8_ofs = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W8_OFS);
+	p->mp_rcp_data_w8_sort = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W8_SORT);
+	p->mp_rcp_data_w9_pe = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W9_PE);
+	p->mp_rcp_data_w9_ofs = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W9_OFS);
+	p->mp_rcp_data_w9_sort = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W9_SORT);
+	p->mp_rcp_data_w9_p = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_W9_P);
+	p->mp_rcp_data_p_mask = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_P_MASK);
+	p->mp_rcp_data_word_mask = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_WORD_MASK);
+	p->mp_rcp_data_seed = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_SEED);
+	p->mp_rcp_data_tnl_p = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_TNL_P);
+	p->mp_rcp_data_hsh_valid = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_HSH_VALID);
+	p->mp_rcp_data_hsh_type = nthw_register_get_field(p->mp_rcp_data, HSH_RCP_DATA_HSH_TYPE);
+	p->mp_rcp_data_toeplitz = nthw_register_query_field(p->mp_rcp_data, HSH_RCP_DATA_TOEPLITZ);
+	p->mp_rcp_data_k = nthw_register_query_field(p->mp_rcp_data, HSH_RCP_DATA_K);
+	p->mp_rcp_data_auto_ipv4_mask =
+		nthw_register_query_field(p->mp_rcp_data, HSH_RCP_DATA_AUTO_IPV4_MASK);
+
+	/* Init */
+	uint32_t val[10] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+	nthw_field_set_val32(p->mp_rcp_addr, 0);
+	nthw_field_set_val32(p->mp_rcp_cnt, 1);
+
+	nthw_field_set_val32(p->mp_rcp_data_load_dist_type, 0);
+	nthw_field_set_val(p->mp_rcp_data_mac_port_mask, val,
+		p->mp_rcp_data_mac_port_mask->mn_words);
+	nthw_field_set_val32(p->mp_rcp_data_sort, 0);
+	nthw_field_set_val32(p->mp_rcp_data_qw0_pe, 0);
+	nthw_field_set_val32(p->mp_rcp_data_qw0_ofs, 0);
+	nthw_field_set_val32(p->mp_rcp_data_qw4_pe, 0);
+	nthw_field_set_val32(p->mp_rcp_data_qw4_ofs, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w8_pe, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w8_ofs, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w8_sort, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w9_pe, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w9_ofs, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w9_sort, 0);
+	nthw_field_set_val32(p->mp_rcp_data_w9_p, 0);
+	nthw_field_set_val(p->mp_rcp_data_word_mask, val, 10);
+	nthw_field_set_val32(p->mp_rcp_data_seed, 0);
+	nthw_field_set_val32(p->mp_rcp_data_tnl_p, 0);
+	nthw_field_set_val32(p->mp_rcp_data_hsh_valid, 0);
+	nthw_field_set_val32(p->mp_rcp_data_hsh_type, 31);
+
+	if (p->mp_rcp_data_toeplitz)
+		nthw_field_set_val32(p->mp_rcp_data_toeplitz, 0);
+
+	if (p->mp_rcp_data_k)
+		nthw_field_set_val(p->mp_rcp_data_k, val, 10);
+
+	nthw_register_flush(p->mp_rcp_ctrl, 1);
+	nthw_register_flush(p->mp_rcp_data, 1);
+
+	return 0;
+}
+
+void hsh_nthw_rcp_select(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_addr, val);
+}
+
+void hsh_nthw_rcp_cnt(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_cnt, val);
+}
+
+void hsh_nthw_rcp_load_dist_type(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_load_dist_type, val);
+}
+
+void hsh_nthw_rcp_mac_port_mask(const struct hsh_nthw *p, uint32_t *val)
+{
+	nthw_field_set_val(p->mp_rcp_data_mac_port_mask, val,
+		p->mp_rcp_data_mac_port_mask->mn_words);
+}
+
+void hsh_nthw_rcp_sort(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_sort, val);
+}
+
+void hsh_nthw_rcp_qw0_pe(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_qw0_pe, val);
+}
+
+void hsh_nthw_rcp_qw0_ofs(const struct hsh_nthw *p, int32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_qw0_ofs, val);
+}
+
+void hsh_nthw_rcp_qw4_pe(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_qw4_pe, val);
+}
+
+void hsh_nthw_rcp_qw4_ofs(const struct hsh_nthw *p, int32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_qw4_ofs, val);
+}
+
+void hsh_nthw_rcp_w8_pe(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w8_pe, val);
+}
+
+void hsh_nthw_rcp_w8_ofs(const struct hsh_nthw *p, int32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w8_ofs, val);
+}
+
+void hsh_nthw_rcp_w8_sort(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w8_sort, val);
+}
+
+void hsh_nthw_rcp_w9_pe(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w9_pe, val);
+}
+
+void hsh_nthw_rcp_w9_ofs(const struct hsh_nthw *p, int32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w9_ofs, val);
+}
+
+void hsh_nthw_rcp_w9_sort(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w9_sort, val);
+}
+
+void hsh_nthw_rcp_w9_p(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_w9_p, val);
+}
+
+void hsh_nthw_rcp_p_mask(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_p_mask, val);
+}
+
+void hsh_nthw_rcp_word_mask(const struct hsh_nthw *p, uint32_t *val)
+{
+	nthw_field_set_val(p->mp_rcp_data_word_mask, val, 10);
+}
+
+void hsh_nthw_rcp_seed(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_seed, val);
+}
+
+void hsh_nthw_rcp_tnl_p(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_tnl_p, val);
+}
+
+void hsh_nthw_rcp_hsh_valid(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_hsh_valid, val);
+}
+
+void hsh_nthw_rcp_hsh_type(const struct hsh_nthw *p, uint32_t val)
+{
+	nthw_field_set_val32(p->mp_rcp_data_hsh_type, val);
+}
+
+void hsh_nthw_rcp_toeplitz(const struct hsh_nthw *p, uint32_t val)
+{
+	if (p->mp_rcp_data_toeplitz)
+		nthw_field_set_val32(p->mp_rcp_data_toeplitz, val);
+}
+
+void hsh_nthw_rcp_k(const struct hsh_nthw *p, uint32_t *val)
+{
+	if (p->mp_rcp_data_k)
+		nthw_field_set_val(p->mp_rcp_data_k, val, 10);
+}
+
+void hsh_nthw_rcp_auto_ipv4_mask(const struct hsh_nthw *p, uint32_t val)
+{
+	if (p->mp_rcp_data_auto_ipv4_mask)
+		nthw_field_set_val32(p->mp_rcp_data_auto_ipv4_mask, val);
+}
+
+void hsh_nthw_rcp_flush(const struct hsh_nthw *p)
+{
+	nthw_register_flush(p->mp_rcp_ctrl, 1);
+	nthw_register_flush(p->mp_rcp_data, 1);
+}
diff --git a/drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.h b/drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.h
new file mode 100644
index 0000000000..70626122e3
--- /dev/null
+++ b/drivers/net/ntnic/nthw/flow_filter/flow_nthw_hsh.h
@@ -0,0 +1,87 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __FLOW_NTHW_HSH_H__
+#define __FLOW_NTHW_HSH_H__
+
+#include <stdint.h>
+
+#include "nthw_fpga_model.h"
+
+struct hsh_nthw;
+
+typedef struct hsh_nthw hsh_nthw_t;
+
+struct hsh_nthw *hsh_nthw_new(void);
+void hsh_nthw_delete(struct hsh_nthw *p);
+int hsh_nthw_init(struct hsh_nthw *p, nthw_fpga_t *p_fpga, int n_instance);
+
+int hsh_nthw_setup(struct hsh_nthw *p, int n_idx, int n_idx_cnt);
+void hsh_nthw_set_debug_mode(struct hsh_nthw *p, unsigned int n_debug_mode);
+
+/* RCP */
+void hsh_nthw_rcp_select(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_cnt(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_load_dist_type(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_mac_port_mask(const struct hsh_nthw *p, uint32_t *val);
+void hsh_nthw_rcp_sort(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_qw0_pe(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_qw0_ofs(const struct hsh_nthw *p, int32_t val);
+void hsh_nthw_rcp_qw4_pe(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_qw4_ofs(const struct hsh_nthw *p, int32_t val);
+void hsh_nthw_rcp_w8_pe(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_w8_ofs(const struct hsh_nthw *p, int32_t val);
+void hsh_nthw_rcp_w8_sort(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_w9_pe(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_w9_ofs(const struct hsh_nthw *p, int32_t val);
+void hsh_nthw_rcp_w9_sort(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_w9_p(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_p_mask(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_word_mask(const struct hsh_nthw *p, uint32_t *val);
+void hsh_nthw_rcp_seed(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_tnl_p(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_hsh_valid(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_hsh_type(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_toeplitz(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_k(const struct hsh_nthw *p, uint32_t *val);
+void hsh_nthw_rcp_auto_ipv4_mask(const struct hsh_nthw *p, uint32_t val);
+void hsh_nthw_rcp_flush(const struct hsh_nthw *p);
+
+struct hsh_nthw {
+	uint8_t m_physical_adapter_no;
+	nthw_fpga_t *mp_fpga;
+
+	nthw_module_t *m_hsh;
+
+	nthw_register_t *mp_rcp_ctrl;
+	nthw_field_t *mp_rcp_addr;
+	nthw_field_t *mp_rcp_cnt;
+	nthw_register_t *mp_rcp_data;
+	nthw_field_t *mp_rcp_data_load_dist_type;
+	nthw_field_t *mp_rcp_data_mac_port_mask;
+	nthw_field_t *mp_rcp_data_sort;
+	nthw_field_t *mp_rcp_data_qw0_pe;
+	nthw_field_t *mp_rcp_data_qw0_ofs;
+	nthw_field_t *mp_rcp_data_qw4_pe;
+	nthw_field_t *mp_rcp_data_qw4_ofs;
+	nthw_field_t *mp_rcp_data_w8_pe;
+	nthw_field_t *mp_rcp_data_w8_ofs;
+	nthw_field_t *mp_rcp_data_w8_sort;
+	nthw_field_t *mp_rcp_data_w9_pe;
+	nthw_field_t *mp_rcp_data_w9_ofs;
+	nthw_field_t *mp_rcp_data_w9_sort;
+	nthw_field_t *mp_rcp_data_w9_p;
+	nthw_field_t *mp_rcp_data_p_mask;
+	nthw_field_t *mp_rcp_data_word_mask;
+	nthw_field_t *mp_rcp_data_seed;
+	nthw_field_t *mp_rcp_data_tnl_p;
+	nthw_field_t *mp_rcp_data_hsh_valid;
+	nthw_field_t *mp_rcp_data_hsh_type;
+	nthw_field_t *mp_rcp_data_toeplitz;
+	nthw_field_t *mp_rcp_data_k;
+	nthw_field_t *mp_rcp_data_auto_ipv4_mask;
+};
+
+#endif	/* __FLOW_NTHW_HSH_H__ */
diff --git a/drivers/net/ntnic/nthw/supported/nthw_fpga_mod_defs.h b/drivers/net/ntnic/nthw/supported/nthw_fpga_mod_defs.h
index 6b2b5334da..a929a98b52 100644
--- a/drivers/net/ntnic/nthw/supported/nthw_fpga_mod_defs.h
+++ b/drivers/net/ntnic/nthw/supported/nthw_fpga_mod_defs.h
@@ -20,6 +20,7 @@
 #define MOD_GMF (0x68b1d15aUL)
 #define MOD_GPIO_PHY (0xbbe81659UL)
 #define MOD_HIF (0x7815363UL)
+#define MOD_HSH (0x501484bfUL)
 #define MOD_I2CM (0x93bc7780UL)
 #define MOD_IFR (0x9b01f1e6UL)
 #define MOD_IIC (0x7629cddbUL)
diff --git a/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs.h b/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs.h
index 38b222363e..9155cc4435 100644
--- a/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs.h
+++ b/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs.h
@@ -19,6 +19,7 @@
 #include "nthw_fpga_reg_defs_gmf.h"
 #include "nthw_fpga_reg_defs_gpio_phy.h"
 #include "nthw_fpga_reg_defs_hif.h"
+#include "nthw_fpga_reg_defs_hsh.h"
 #include "nthw_fpga_reg_defs_i2cm.h"
 #include "nthw_fpga_reg_defs_ifr.h"
 #include "nthw_fpga_reg_defs_iic.h"
diff --git a/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs_hsh.h b/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs_hsh.h
new file mode 100644
index 0000000000..fb95a514de
--- /dev/null
+++ b/drivers/net/ntnic/nthw/supported/nthw_fpga_reg_defs_hsh.h
@@ -0,0 +1,50 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Napatech A/S
+ */
+
+/*
+ * nthw_fpga_reg_defs_hsh.h
+ *
+ * Auto-generated file - do *NOT* edit
+ *
+ */
+
+#ifndef _NTHW_FPGA_REG_DEFS_HSH_
+#define _NTHW_FPGA_REG_DEFS_HSH_
+
+/* HSH */
+#define NTHW_MOD_HSH (0x501484bfUL)
+#define HSH_RCP_CTRL (0xb257f1b9UL)
+#define HSH_RCP_CTRL_ADR (0x5685bfbUL)
+#define HSH_RCP_CTRL_CNT (0x1560c22aUL)
+#define HSH_RCP_DATA (0x1d8673a0UL)
+#define HSH_RCP_DATA_AUTO_IPV4_MASK (0xa0d4de3bUL)
+#define HSH_RCP_DATA_HSH_TYPE (0x14cd0865UL)
+#define HSH_RCP_DATA_HSH_VALID (0xc89b0bd3UL)
+#define HSH_RCP_DATA_K (0xccdb0222UL)
+#define HSH_RCP_DATA_LOAD_DIST_TYPE (0x152a0a87UL)
+#define HSH_RCP_DATA_MAC_PORT_MASK (0x5160b288UL)
+#define HSH_RCP_DATA_P_MASK (0x8a555abbUL)
+#define HSH_RCP_DATA_QW0_OFS (0x276b79cfUL)
+#define HSH_RCP_DATA_QW0_PE (0x32014a20UL)
+#define HSH_RCP_DATA_QW4_OFS (0xd2ebdf0fUL)
+#define HSH_RCP_DATA_QW4_PE (0xbd63dd77UL)
+#define HSH_RCP_DATA_SEED (0xf8fc2c1cUL)
+#define HSH_RCP_DATA_SORT (0xed5f3d38UL)
+#define HSH_RCP_DATA_TNL_P (0x6e56b51eUL)
+#define HSH_RCP_DATA_TOEPLITZ (0xc1864a45UL)
+#define HSH_RCP_DATA_W8_OFS (0x68150d02UL)
+#define HSH_RCP_DATA_W8_PE (0x9387d583UL)
+#define HSH_RCP_DATA_W8_SORT (0x5c67eca8UL)
+#define HSH_RCP_DATA_W9_OFS (0x557524b2UL)
+#define HSH_RCP_DATA_W9_P (0x808204d9UL)
+#define HSH_RCP_DATA_W9_PE (0x2b3bb2e6UL)
+#define HSH_RCP_DATA_W9_SORT (0x973b3f0dUL)
+#define HSH_RCP_DATA_WORD_MASK (0x55c53a1fUL)
+
+#endif	/* _NTHW_FPGA_REG_DEFS_HSH_ */
+
+/*
+ * Auto-generated file - do *NOT* edit
+ */
-- 
2.45.0