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From: Serhii Iliushyk <sil-plv@napatech.com>
To: dev@dpdk.org
Cc: mko-plv@napatech.com, sil-plv@napatech.com, ckm@napatech.com,
andrew.rybchenko@oktetlabs.ru, ferruh.yigit@amd.com,
Oleksandr Kolomeiets <okl-plv@napatech.com>
Subject: [PATCH v1 28/31] net/ntnic: add slicer (SLC LR) FPGA module
Date: Fri, 4 Oct 2024 17:07:21 +0200
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From: Oleksandr Kolomeiets <okl-plv@napatech.com>
The Slicer for Local Retransmit module can cut of the head a packet
before the packet leaves the FPGA RX pipeline.
This is used when the TX pipeline is configured
to add a new head in the packet.
Signed-off-by: Oleksandr Kolomeiets <okl-plv@napatech.com>
---
drivers/net/ntnic/include/hw_mod_backend.h | 21 ++++++
drivers/net/ntnic/meson.build | 1 +
.../nthw/flow_api/hw_mod/hw_mod_backend.c | 4 ++
.../nthw/flow_api/hw_mod/hw_mod_slc_lr.c | 65 +++++++++++++++++++
4 files changed, 91 insertions(+)
create mode 100644 drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_slc_lr.c
diff --git a/drivers/net/ntnic/include/hw_mod_backend.h b/drivers/net/ntnic/include/hw_mod_backend.h
index 13e0d1731e..b28192e682 100644
--- a/drivers/net/ntnic/include/hw_mod_backend.h
+++ b/drivers/net/ntnic/include/hw_mod_backend.h
@@ -7,6 +7,7 @@
#define _HW_MOD_BACKEND_H_
#include <stdbool.h>
+#include <string.h>
#include "ntlog.h"
@@ -580,6 +581,25 @@ struct slc_lr_func_s {
struct hw_mod_slc_lr_v2_s v2;
};
};
+enum hw_slc_lr_e {
+ /* functions */
+ HW_SLC_LR_RCP_PRESET_ALL = 0,
+ HW_SLC_LR_RCP_COMPARE,
+ HW_SLC_LR_RCP_FIND,
+ /* fields */
+ HW_SLC_LR_RCP_HEAD_SLC_EN = FIELD_START_INDEX,
+ HW_SLC_LR_RCP_HEAD_DYN,
+ HW_SLC_LR_RCP_HEAD_OFS,
+ HW_SLC_LR_RCP_TAIL_SLC_EN,
+ HW_SLC_LR_RCP_TAIL_DYN,
+ HW_SLC_LR_RCP_TAIL_OFS,
+ HW_SLC_LR_RCP_PCAP
+};
+bool hw_mod_slc_lr_present(struct flow_api_backend_s *be);
+int hw_mod_slc_lr_alloc(struct flow_api_backend_s *be);
+void hw_mod_slc_lr_free(struct flow_api_backend_s *be);
+int hw_mod_slc_lr_reset(struct flow_api_backend_s *be);
+int hw_mod_slc_lr_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
struct pdb_func_s {
COMMON_FUNC_INFO_S;
@@ -758,6 +778,7 @@ struct flow_api_backend_s {
struct flm_func_s flm;
struct hsh_func_s hsh;
struct qsl_func_s qsl;
+ struct slc_lr_func_s slc_lr;
/* NIC attributes */
unsigned int num_phy_ports;
diff --git a/drivers/net/ntnic/meson.build b/drivers/net/ntnic/meson.build
index 02981ef987..4caee8ac41 100644
--- a/drivers/net/ntnic/meson.build
+++ b/drivers/net/ntnic/meson.build
@@ -54,6 +54,7 @@ sources = files(
'nthw/flow_api/hw_mod/hw_mod_hsh.c',
'nthw/flow_api/hw_mod/hw_mod_km.c',
'nthw/flow_api/hw_mod/hw_mod_qsl.c',
+ 'nthw/flow_api/hw_mod/hw_mod_slc_lr.c',
'nthw/flow_filter/flow_nthw_cat.c',
'nthw/flow_filter/flow_nthw_csu.c',
'nthw/flow_filter/flow_nthw_flm.c',
diff --git a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c
index 4f16235a67..6b0ea2a4a6 100644
--- a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c
+++ b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c
@@ -22,6 +22,10 @@ static const struct {
{ "FLM", hw_mod_flm_alloc, hw_mod_flm_free, hw_mod_flm_reset, hw_mod_flm_present },
{ "HSH", hw_mod_hsh_alloc, hw_mod_hsh_free, hw_mod_hsh_reset, hw_mod_hsh_present },
{ "QSL", hw_mod_qsl_alloc, hw_mod_qsl_free, hw_mod_qsl_reset, hw_mod_qsl_present },
+ {
+ "SLC LR", hw_mod_slc_lr_alloc, hw_mod_slc_lr_free, hw_mod_slc_lr_reset,
+ hw_mod_slc_lr_present
+ },
};
#define MOD_COUNT (ARRAY_SIZE(module))
diff --git a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_slc_lr.c b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_slc_lr.c
new file mode 100644
index 0000000000..d95352ec67
--- /dev/null
+++ b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_slc_lr.c
@@ -0,0 +1,65 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "hw_mod_backend.h"
+
+#define _MOD_ "SLC_LR"
+#define _VER_ be->slc_lr.ver
+
+bool hw_mod_slc_lr_present(struct flow_api_backend_s *be)
+{
+ return be->iface->get_slc_lr_present(be->be_dev);
+}
+
+int hw_mod_slc_lr_alloc(struct flow_api_backend_s *be)
+{
+ _VER_ = be->iface->get_slc_lr_version(be->be_dev);
+ NT_LOG(DBG, FILTER, "SLC LR MODULE VERSION %i.%i\n", VER_MAJOR(_VER_), VER_MINOR(_VER_));
+
+ switch (_VER_) {
+ case 2:
+ if (!callocate_mod((struct common_func_s *)&be->slc_lr, 1, &be->slc_lr.v2.rcp,
+ be->max_categories, sizeof(struct slc_lr_v2_rcp_s)))
+ return -1;
+
+ break;
+
+ default:
+ return UNSUP_VER;
+ }
+
+ return 0;
+}
+
+void hw_mod_slc_lr_free(struct flow_api_backend_s *be)
+{
+ if (be->slc_lr.base) {
+ free(be->slc_lr.base);
+ be->slc_lr.base = NULL;
+ }
+}
+
+int hw_mod_slc_lr_reset(struct flow_api_backend_s *be)
+{
+ /* Zero entire cache area */
+ zero_module_cache((struct common_func_s *)(&be->slc_lr));
+
+ NT_LOG(DBG, FILTER, "INIT SLC LR RCP\n");
+ return hw_mod_slc_lr_rcp_flush(be, 0, be->max_categories);
+}
+
+int hw_mod_slc_lr_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+ if (count == ALL_ENTRIES)
+ count = be->max_categories;
+
+ if ((unsigned int)(start_idx + count) > be->max_categories)
+ return INDEX_TOO_LARGE;
+
+ return be->iface->slc_lr_rcp_flush(be->be_dev, &be->slc_lr, start_idx, count);
+}
--
2.45.0