[dpdk-dev] [PATCH 06/40] bnxt: add vnic functions and structs

[Stephen Hurd <stephen.hurd@broadcom.com>]

Add functions to allocate, initialize, and free vnics.

Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/Makefile              |   1 +
 drivers/net/bnxt/bnxt.h                |  14 ++
 drivers/net/bnxt/bnxt_vnic.c           | 277 +++++++++++++++++++++++++++++++++
 drivers/net/bnxt/bnxt_vnic.h           |  80 ++++++++++
 drivers/net/bnxt/hsi_struct_def_dpdk.h |   5 +-
 5 files changed, 376 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/bnxt/bnxt_vnic.c
 create mode 100644 drivers/net/bnxt/bnxt_vnic.h

diff --git a/drivers/net/bnxt/Makefile b/drivers/net/bnxt/Makefile
index bb2be76..f77ecb5 100644
--- a/drivers/net/bnxt/Makefile
+++ b/drivers/net/bnxt/Makefile
@@ -50,6 +50,7 @@ EXPORT_MAP := rte_pmd_bnxt_version.map
 #
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_ethdev.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_hwrm.c
+SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_vnic.c
 
 #
 # Export include files
diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index f1a620f..846972e 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -45,6 +45,13 @@
 #define BNXT_MAX_MTU		9000
 #define VLAN_TAG_SIZE		4
 
+enum bnxt_hw_context {
+	HW_CONTEXT_NONE     = 0,
+	HW_CONTEXT_IS_RSS   = 1,
+	HW_CONTEXT_IS_COS   = 2,
+	HW_CONTEXT_IS_LB    = 3,
+};
+
 struct bnxt_vf_info {
 	uint16_t		fw_fid;
 	uint8_t			mac_addr[ETHER_ADDR_LEN];
@@ -130,6 +137,13 @@ struct bnxt {
 	unsigned		tx_cp_nr_rings;
 	struct bnxt_tx_queue **tx_queues;
 
+	struct bnxt_vnic_info	*vnic_info;
+	STAILQ_HEAD(, bnxt_vnic_info)	free_vnic_list;
+
+	/* VNIC pointer for flow filter (VMDq) pools */
+#define MAX_FF_POOLS	ETH_64_POOLS
+	STAILQ_HEAD(, bnxt_vnic_info)	ff_pool[MAX_FF_POOLS];
+
 #define MAX_NUM_MAC_ADDR	32
 	uint8_t			mac_addr[ETHER_ADDR_LEN];
 
diff --git a/drivers/net/bnxt/bnxt_vnic.c b/drivers/net/bnxt/bnxt_vnic.c
new file mode 100644
index 0000000..c04c4c7
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_vnic.c
@@ -0,0 +1,277 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2014-2015 Broadcom Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Broadcom Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <inttypes.h>
+
+#include <rte_memzone.h>
+#include <rte_malloc.h>
+
+#include "bnxt.h"
+#include "bnxt_vnic.h"
+#include "hsi_struct_def_dpdk.h"
+
+/*
+ * VNIC Functions
+ */
+
+static void prandom_bytes(void *dest_ptr, size_t len)
+{
+	char *dest = (char *)dest_ptr;
+	uint64_t rb;
+
+	while (len) {
+		rb = rte_rand();
+		if (len >= 8) {
+			memcpy(dest, &rb, 8);
+			len -= 8;
+			dest += 8;
+		} else {
+			memcpy(dest, &rb, len);
+			dest += len;
+			len = 0;
+		}
+	}
+}
+
+void bnxt_init_vnics(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *vnic;
+	uint16_t max_vnics;
+	int i, j;
+
+	if (BNXT_PF(bp)) {
+		struct bnxt_pf_info *pf = &bp->pf;
+
+		max_vnics = pf->max_vnics;
+	} else {
+		struct bnxt_vf_info *vf = &bp->vf;
+
+		max_vnics = vf->max_vnics;
+	}
+	STAILQ_INIT(&bp->free_vnic_list);
+	for (i = 0; i < max_vnics; i++) {
+		vnic = &bp->vnic_info[i];
+		vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
+		vnic->fw_rss_cos_lb_ctx = (uint16_t)HWRM_NA_SIGNATURE;
+		vnic->ctx_is_rss_cos_lb = HW_CONTEXT_NONE;
+
+		for (j = 0; j < MAX_QUEUES_PER_VNIC; j++)
+			vnic->fw_grp_ids[j] = (uint16_t)HWRM_NA_SIGNATURE;
+
+		prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
+		STAILQ_INIT(&vnic->filter);
+		STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
+	}
+	for (i = 0; i < MAX_FF_POOLS; i++)
+		STAILQ_INIT(&bp->ff_pool[i]);
+}
+
+int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
+			  int pool)
+{
+	struct bnxt_vnic_info *temp;
+
+	temp = STAILQ_FIRST(&bp->ff_pool[pool]);
+	while (temp) {
+		if (temp == vnic) {
+			STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
+				      bnxt_vnic_info, next);
+			vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
+			STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
+					   next);
+			return 0;
+		}
+		temp = STAILQ_NEXT(temp, next);
+	}
+	RTE_LOG(ERR, PMD, "VNIC %p is not found in pool[%d]\n", vnic, pool);
+	return -EINVAL;
+}
+
+struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *vnic;
+
+	/* Find the 1st unused vnic from the free_vnic_list pool*/
+	vnic = STAILQ_FIRST(&bp->free_vnic_list);
+	if (!vnic) {
+		RTE_LOG(ERR, PMD, "No more free VNIC resources\n");
+		return NULL;
+	}
+	STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
+	return vnic;
+}
+
+void bnxt_free_all_vnics(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *temp, *next;
+	int i;
+
+	for (i = 0; i < MAX_FF_POOLS; i++) {
+		temp = STAILQ_FIRST(&bp->ff_pool[i]);
+		while (temp) {
+			next = STAILQ_NEXT(temp, next);
+			STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
+				      next);
+			STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
+			temp = next;
+		}
+	}
+}
+
+void bnxt_free_vnic_attributes(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *vnic;
+
+	STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
+		if (vnic->rss_table) {
+			/* 'Unreserve' the rss_table */
+			/* N/A */
+
+			vnic->rss_table = NULL;
+		}
+
+		if (vnic->rss_hash_key) {
+			/* 'Unreserve' the rss_hash_key */
+			/* N/A */
+
+			vnic->rss_hash_key = NULL;
+		}
+	}
+}
+
+int bnxt_alloc_vnic_attributes(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *vnic;
+	struct rte_pci_device *pdev = bp->pdev;
+	const struct rte_memzone *mz;
+	char mz_name[RTE_MEMZONE_NAMESIZE];
+	int entry_length = RTE_CACHE_LINE_ROUNDUP(
+				HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
+				HW_HASH_KEY_SIZE);
+	uint16_t max_vnics;
+	int i;
+
+	if (BNXT_PF(bp)) {
+		struct bnxt_pf_info *pf = &bp->pf;
+
+		max_vnics = pf->max_vnics;
+	} else {
+		struct bnxt_vf_info *vf = &bp->vf;
+
+		max_vnics = vf->max_vnics;
+	}
+	snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
+		 "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
+		 pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
+	mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
+	mz = rte_memzone_lookup(mz_name);
+	if (!mz) {
+		mz = rte_memzone_reserve(mz_name,
+					 entry_length * max_vnics,
+					 SOCKET_ID_ANY,
+					 RTE_MEMZONE_2MB |
+					 RTE_MEMZONE_SIZE_HINT_ONLY);
+		if (!mz)
+			return -ENOMEM;
+	}
+
+	for (i = 0; i < max_vnics; i++) {
+		vnic = &bp->vnic_info[i];
+
+		/* Allocate rss table and hash key */
+		vnic->rss_table =
+			(void *)((char *)mz->addr + (entry_length * i));
+		memset(vnic->rss_table, -1, entry_length);
+
+		vnic->rss_table_dma_addr = mz->phys_addr + (entry_length * i);
+		vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
+			     HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
+
+		vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
+			     HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
+	}
+
+	return 0;
+}
+
+void bnxt_free_vnic_mem(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *vnic;
+	uint16_t max_vnics, i;
+
+	if (BNXT_PF(bp)) {
+		struct bnxt_pf_info *pf = &bp->pf;
+
+		max_vnics = pf->max_vnics;
+	} else {
+		struct bnxt_vf_info *vf = &bp->vf;
+
+		max_vnics = vf->max_vnics;
+	}
+	for (i = 0; i < max_vnics; i++) {
+		vnic = &bp->vnic_info[i];
+		if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
+			RTE_LOG(ERR, PMD, "VNIC is not freed yet!\n");
+			/* TODO Call HWRM to free VNIC */
+		}
+	}
+
+	rte_free(bp->vnic_info);
+	bp->vnic_info = NULL;
+}
+
+int bnxt_alloc_vnic_mem(struct bnxt *bp)
+{
+	struct bnxt_vnic_info *vnic_mem;
+	uint16_t max_vnics;
+
+	if (BNXT_PF(bp)) {
+		struct bnxt_pf_info *pf = &bp->pf;
+
+		max_vnics = pf->max_vnics;
+	} else {
+		struct bnxt_vf_info *vf = &bp->vf;
+
+		max_vnics = vf->max_vnics;
+	}
+	/* Allocate memory for VNIC pool and filter pool */
+	vnic_mem = rte_zmalloc("bnxt_vnic_info",
+			       max_vnics * sizeof(struct bnxt_vnic_info), 0);
+	if (vnic_mem == NULL) {
+		RTE_LOG(ERR, PMD, "Failed to alloc memory for %d VNICs",
+			max_vnics);
+		return -ENOMEM;
+	}
+	bp->vnic_info = vnic_mem;
+	return 0;
+}
diff --git a/drivers/net/bnxt/bnxt_vnic.h b/drivers/net/bnxt/bnxt_vnic.h
new file mode 100644
index 0000000..9671ba4
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_vnic.h
@@ -0,0 +1,80 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2014-2015 Broadcom Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Broadcom Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _BNXT_VNIC_H_
+#define _BNXT_VNIC_H_
+
+#include <sys/queue.h>
+#include <stdbool.h>
+
+struct bnxt_vnic_info {
+	STAILQ_ENTRY(bnxt_vnic_info)	next;
+	uint8_t		ff_pool_idx;
+
+	uint16_t	fw_vnic_id; /* returned by Chimp during alloc */
+	uint16_t	fw_rss_cos_lb_ctx;
+	uint16_t	ctx_is_rss_cos_lb;
+#define MAX_NUM_TRAFFIC_CLASSES		8
+#define MAX_NUM_RSS_QUEUES_PER_VNIC	16
+#define MAX_QUEUES_PER_VNIC	(MAX_NUM_RSS_QUEUES_PER_VNIC + \
+				 MAX_NUM_TRAFFIC_CLASSES)
+	uint16_t	start_grp_id;
+	uint16_t	end_grp_id;
+	uint16_t	fw_grp_ids[MAX_QUEUES_PER_VNIC];
+	uint16_t	hash_type;
+	phys_addr_t	rss_table_dma_addr;
+	uint16_t	*rss_table;
+	phys_addr_t	rss_hash_key_dma_addr;
+	void		*rss_hash_key;
+	uint32_t	flags;
+#define BNXT_VNIC_INFO_PROMISC			(1 << 0)
+#define BNXT_VNIC_INFO_ALLMULTI			(1 << 1)
+
+	bool		vlan_strip;
+	bool		func_default;
+
+	STAILQ_HEAD(, bnxt_filter_info)	filter;
+};
+
+struct bnxt;
+void bnxt_init_vnics(struct bnxt *bp);
+int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
+			  int pool);
+struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp);
+void bnxt_free_all_vnics(struct bnxt *bp);
+void bnxt_free_vnic_attributes(struct bnxt *bp);
+int bnxt_alloc_vnic_attributes(struct bnxt *bp);
+void bnxt_free_vnic_mem(struct bnxt *bp);
+int bnxt_alloc_vnic_mem(struct bnxt *bp);
+
+#endif
diff --git a/drivers/net/bnxt/hsi_struct_def_dpdk.h b/drivers/net/bnxt/hsi_struct_def_dpdk.h
index e36774e..3c032e0 100644
--- a/drivers/net/bnxt/hsi_struct_def_dpdk.h
+++ b/drivers/net/bnxt/hsi_struct_def_dpdk.h
@@ -43,8 +43,11 @@
  * Following is the signature for HWRM message field that indicates not
  * applicable (All F's). Need to cast it the size of the field if needed.
  */
+#define HWRM_NA_SIGNATURE        ((uint32_t)(-1))
 #define HWRM_MAX_REQ_LEN	(128)  /* hwrm_func_buf_rgtr */
 #define HWRM_MAX_RESP_LEN	(176)  /* hwrm_func_qstats */
+#define HW_HASH_INDEX_SIZE      0x80    /* 7 bit indirection table index. */
+#define HW_HASH_KEY_SIZE        40
 #define HWRM_RESP_VALID_KEY	1 /* valid key for HWRM response */
 
 /*
@@ -54,7 +57,7 @@
 #define HWRM_FUNC_QCAPS		(UINT32_C(0x15))
 #define HWRM_FUNC_DRV_UNRGTR	(UINT32_C(0x1a))
 #define HWRM_FUNC_DRV_RGTR	(UINT32_C(0x1d))
-#define HWRM_PORT_PHY_CFG                                 (UINT32_C(0x20))
+#define HWRM_PORT_PHY_CFG	(UINT32_C(0x20))
 #define HWRM_QUEUE_QPORTCFG	(UINT32_C(0x30))
 
 /*
-- 
1.9.1