[dpdk-dev] [PATCH 29/52] common/cnxk: add VLAN filter support

[Nithin Dabilpuram <ndabilpuram@marvell.com>]

From: Sunil Kumar Kori <skori@marvell.com>

Add helper API to support VLAN filtering and stripping
on Rx and VLAN insertion on Tx.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
 drivers/common/cnxk/meson.build    |   1 +
 drivers/common/cnxk/roc_nix.h      |  45 ++++++++
 drivers/common/cnxk/roc_nix_vlan.c | 205 +++++++++++++++++++++++++++++++++++++
 drivers/common/cnxk/version.map    |   8 ++
 4 files changed, 259 insertions(+)
 create mode 100644 drivers/common/cnxk/roc_nix_vlan.c

diff --git a/drivers/common/cnxk/meson.build b/drivers/common/cnxk/meson.build
index 4f00b1d..6ec6f4f 100644
--- a/drivers/common/cnxk/meson.build
+++ b/drivers/common/cnxk/meson.build
@@ -26,6 +26,7 @@ sources = files('roc_dev.c',
 		'roc_nix_queue.c',
 		'roc_nix_rss.c',
 		'roc_nix_stats.c',
+		'roc_nix_vlan.c',
 		'roc_npa.c',
 		'roc_npa_debug.c',
 		'roc_npa_irq.c',
diff --git a/drivers/common/cnxk/roc_nix.h b/drivers/common/cnxk/roc_nix.h
index 441b752..8cd2f26 100644
--- a/drivers/common/cnxk/roc_nix.h
+++ b/drivers/common/cnxk/roc_nix.h
@@ -17,6 +17,26 @@ enum roc_nix_sq_max_sqe_sz {
 	roc_nix_maxsqesz_w8 = NIX_MAXSQESZ_W8,
 };
 
+enum roc_nix_vlan_type {
+	ROC_NIX_VLAN_TYPE_INNER = 0x01,
+	ROC_NIX_VLAN_TYPE_OUTER = 0x02,
+};
+
+struct roc_nix_vlan_config {
+	uint32_t type;
+	union {
+		struct {
+			uint32_t vtag_inner;
+			uint32_t vtag_outer;
+		} vlan;
+
+		struct {
+			int idx_inner;
+			int idx_outer;
+		} mcam;
+	};
+};
+
 /* NIX LF RX offload configuration flags.
  * These are input flags to roc_nix_lf_alloc:rx_cfg
  */
@@ -336,6 +356,31 @@ int __roc_api roc_nix_ptp_info_cb_register(struct roc_nix *roc_nix,
 					   ptp_info_update_t ptp_update);
 void __roc_api roc_nix_ptp_info_cb_unregister(struct roc_nix *roc_nix);
 
+/* VLAN */
+int __roc_api
+roc_nix_vlan_mcam_entry_read(struct roc_nix *roc_nix, uint32_t index,
+			     struct npc_mcam_read_entry_rsp **rsp);
+int __roc_api roc_nix_vlan_mcam_entry_write(struct roc_nix *roc_nix,
+					    uint32_t index,
+					    struct mcam_entry *entry,
+					    uint8_t intf, uint8_t enable);
+int __roc_api roc_nix_vlan_mcam_entry_alloc_and_write(struct roc_nix *roc_nix,
+						      struct mcam_entry *entry,
+						      uint8_t intf,
+						      uint8_t priority,
+						      uint8_t ref_entry);
+int __roc_api roc_nix_vlan_mcam_entry_free(struct roc_nix *roc_nix,
+					   uint32_t index);
+int __roc_api roc_nix_vlan_mcam_entry_ena_dis(struct roc_nix *roc_nix,
+					      uint32_t index, const int enable);
+int __roc_api roc_nix_vlan_strip_vtag_ena_dis(struct roc_nix *roc_nix,
+					      bool enable);
+int __roc_api roc_nix_vlan_insert_ena_dis(struct roc_nix *roc_nix,
+					  struct roc_nix_vlan_config *vlan_cfg,
+					  uint64_t *mcam_index, bool enable);
+int __roc_api roc_nix_vlan_tpid_set(struct roc_nix *roc_nix, uint32_t type,
+				    uint16_t tpid);
+
 /* MCAST*/
 int __roc_api roc_nix_mcast_mcam_entry_alloc(struct roc_nix *roc_nix,
 					     uint16_t nb_entries,
diff --git a/drivers/common/cnxk/roc_nix_vlan.c b/drivers/common/cnxk/roc_nix_vlan.c
new file mode 100644
index 0000000..293af82
--- /dev/null
+++ b/drivers/common/cnxk/roc_nix_vlan.c
@@ -0,0 +1,205 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2020 Marvell.
+ */
+
+#include "roc_api.h"
+#include "roc_priv.h"
+
+static inline struct mbox *
+get_mbox(struct roc_nix *roc_nix)
+{
+	struct nix *nix = roc_nix_to_nix_priv(roc_nix);
+	struct dev *dev = &nix->dev;
+
+	return dev->mbox;
+}
+
+int
+roc_nix_vlan_mcam_entry_read(struct roc_nix *roc_nix, uint32_t index,
+			     struct npc_mcam_read_entry_rsp **rsp)
+{
+	struct mbox *mbox = get_mbox(roc_nix);
+	struct npc_mcam_read_entry_req *req;
+	int rc = -ENOSPC;
+
+	req = mbox_alloc_msg_npc_mcam_read_entry(mbox);
+	if (req == NULL)
+		return rc;
+	req->entry = index;
+
+	return mbox_process_msg(mbox, (void **)rsp);
+}
+
+int
+roc_nix_vlan_mcam_entry_write(struct roc_nix *roc_nix, uint32_t index,
+			      struct mcam_entry *entry, uint8_t intf,
+			      uint8_t enable)
+{
+	struct mbox *mbox = get_mbox(roc_nix);
+	struct npc_mcam_write_entry_req *req;
+	struct msghdr *rsp;
+	int rc = -ENOSPC;
+
+	req = mbox_alloc_msg_npc_mcam_write_entry(mbox);
+	if (req == NULL)
+		return rc;
+	req->entry = index;
+	req->intf = intf;
+	req->enable_entry = enable;
+	mbox_memcpy(&req->entry_data, entry, sizeof(struct mcam_entry));
+
+	return mbox_process_msg(mbox, (void *)&rsp);
+}
+
+int
+roc_nix_vlan_mcam_entry_alloc_and_write(struct roc_nix *roc_nix,
+					struct mcam_entry *entry, uint8_t intf,
+					uint8_t priority, uint8_t ref_entry)
+{
+	struct npc_mcam_alloc_and_write_entry_req *req;
+	struct npc_mcam_alloc_and_write_entry_rsp *rsp;
+	struct mbox *mbox = get_mbox(roc_nix);
+	int rc = -ENOSPC;
+
+	req = mbox_alloc_msg_npc_mcam_alloc_and_write_entry(mbox);
+	if (req == NULL)
+		return rc;
+	req->priority = priority;
+	req->ref_entry = ref_entry;
+	req->intf = intf;
+	req->enable_entry = true;
+	mbox_memcpy(&req->entry_data, entry, sizeof(struct mcam_entry));
+
+	rc = mbox_process_msg(mbox, (void *)&rsp);
+	if (rc)
+		return rc;
+
+	return rsp->entry;
+}
+
+int
+roc_nix_vlan_mcam_entry_free(struct roc_nix *roc_nix, uint32_t index)
+{
+	struct mbox *mbox = get_mbox(roc_nix);
+	struct npc_mcam_free_entry_req *req;
+	int rc = -ENOSPC;
+
+	req = mbox_alloc_msg_npc_mcam_free_entry(mbox);
+	if (req == NULL)
+		return rc;
+	req->entry = index;
+
+	return mbox_process_msg(mbox, NULL);
+}
+
+int
+roc_nix_vlan_mcam_entry_ena_dis(struct roc_nix *roc_nix, uint32_t index,
+				const int enable)
+{
+	struct npc_mcam_ena_dis_entry_req *req;
+	struct mbox *mbox = get_mbox(roc_nix);
+	int rc = -ENOSPC;
+
+	if (enable) {
+		req = mbox_alloc_msg_npc_mcam_ena_entry(mbox);
+		if (req == NULL)
+			return rc;
+	} else {
+		req = mbox_alloc_msg_npc_mcam_dis_entry(mbox);
+		if (req == NULL)
+			return rc;
+	}
+
+	req->entry = index;
+	return mbox_process_msg(mbox, NULL);
+}
+
+int
+roc_nix_vlan_strip_vtag_ena_dis(struct roc_nix *roc_nix, bool enable)
+{
+	struct mbox *mbox = get_mbox(roc_nix);
+	struct nix_vtag_config *vtag_cfg;
+	int rc = -ENOSPC;
+
+	vtag_cfg = mbox_alloc_msg_nix_vtag_cfg(mbox);
+	if (vtag_cfg == NULL)
+		return rc;
+	vtag_cfg->vtag_size = NIX_VTAGSIZE_T4;
+	vtag_cfg->cfg_type = 1;	       /* Rx VLAN configuration */
+	vtag_cfg->rx.capture_vtag = 1; /* Always capture */
+	vtag_cfg->rx.vtag_type = 0;    /* Use index 0 */
+
+	if (enable)
+		vtag_cfg->rx.strip_vtag = 1;
+	else
+		vtag_cfg->rx.strip_vtag = 0;
+
+	return mbox_process(mbox);
+}
+
+int
+roc_nix_vlan_insert_ena_dis(struct roc_nix *roc_nix,
+			    struct roc_nix_vlan_config *vlan_cfg,
+			    uint64_t *mcam_index, bool enable)
+{
+	struct mbox *mbox = get_mbox(roc_nix);
+	struct nix_vtag_config *vtag_cfg;
+	struct nix_vtag_config_rsp *rsp;
+	int rc = -ENOSPC;
+
+	vtag_cfg = mbox_alloc_msg_nix_vtag_cfg(mbox);
+	if (vtag_cfg == NULL)
+		return rc;
+	vtag_cfg->cfg_type = 0; /* Tx VLAN configuration */
+	vtag_cfg->vtag_size = NIX_VTAGSIZE_T4;
+
+	if (enable) {
+		if (vlan_cfg->type & ROC_NIX_VLAN_TYPE_INNER) {
+			vtag_cfg->tx.vtag0 = vlan_cfg->vlan.vtag_inner;
+			vtag_cfg->tx.cfg_vtag0 = true;
+		}
+		if (vlan_cfg->type & ROC_NIX_VLAN_TYPE_OUTER) {
+			vtag_cfg->tx.vtag1 = vlan_cfg->vlan.vtag_outer;
+			vtag_cfg->tx.cfg_vtag1 = true;
+		}
+	} else {
+		if (vlan_cfg->type & ROC_NIX_VLAN_TYPE_INNER) {
+			vtag_cfg->tx.vtag0_idx = vlan_cfg->mcam.idx_inner;
+			vtag_cfg->tx.free_vtag0 = true;
+		}
+		if (vlan_cfg->type & ROC_NIX_VLAN_TYPE_OUTER) {
+			vtag_cfg->tx.vtag1_idx = vlan_cfg->mcam.idx_outer;
+			vtag_cfg->tx.free_vtag1 = true;
+		}
+	}
+
+	rc = mbox_process_msg(mbox, (void *)&rsp);
+	if (rc)
+		return rc;
+
+	if (enable)
+		*mcam_index =
+			(((uint64_t)rsp->vtag1_idx << 32) | rsp->vtag0_idx);
+
+	return 0;
+}
+
+int
+roc_nix_vlan_tpid_set(struct roc_nix *roc_nix, uint32_t type, uint16_t tpid)
+{
+	struct mbox *mbox = get_mbox(roc_nix);
+	struct nix_set_vlan_tpid *tpid_cfg;
+	int rc = -ENOSPC;
+
+	tpid_cfg = mbox_alloc_msg_nix_set_vlan_tpid(mbox);
+	if (tpid_cfg == NULL)
+		return rc;
+	tpid_cfg->tpid = tpid;
+
+	if (type & ROC_NIX_VLAN_TYPE_OUTER)
+		tpid_cfg->vlan_type = NIX_VLAN_TYPE_OUTER;
+	else
+		tpid_cfg->vlan_type = NIX_VLAN_TYPE_INNER;
+
+	return mbox_process(mbox);
+}
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index 454e91c..2bac424 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -97,6 +97,14 @@ INTERNAL {
 	roc_nix_xstats_names_get;
 	roc_nix_unregister_cq_irqs;
 	roc_nix_unregister_queue_irqs;
+	roc_nix_vlan_insert_ena_dis;
+	roc_nix_vlan_mcam_entry_alloc_and_write;
+	roc_nix_vlan_mcam_entry_ena_dis;
+	roc_nix_vlan_mcam_entry_free;
+	roc_nix_vlan_mcam_entry_read;
+	roc_nix_vlan_mcam_entry_write;
+	roc_nix_vlan_strip_vtag_ena_dis;
+	roc_nix_vlan_tpid_set;
 	roc_npa_aura_limit_modify;
 	roc_npa_aura_op_range_set;
 	roc_npa_ctx_dump;
-- 
2.8.4