1 files changed, 255 insertions, 0 deletions
diff --git a/drivers/net/enic/enic_clsf.c b/drivers/net/enic/enic_clsf.c
new file mode 100644
index 00000000..edb56e1d
--- /dev/null
+++ b/drivers/net/enic/enic_clsf.c
@@ -0,0 +1,255 @@
+/*
+ * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * Copyright (c) 2014, Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 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 HOLDER 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 <libgen.h>
+
+#include <rte_ethdev.h>
+#include <rte_malloc.h>
+#include <rte_hash.h>
+#include <rte_byteorder.h>
+
+#include "enic_compat.h"
+#include "enic.h"
+#include "wq_enet_desc.h"
+#include "rq_enet_desc.h"
+#include "cq_enet_desc.h"
+#include "vnic_enet.h"
+#include "vnic_dev.h"
+#include "vnic_wq.h"
+#include "vnic_rq.h"
+#include "vnic_cq.h"
+#include "vnic_intr.h"
+#include "vnic_nic.h"
+
+#ifdef RTE_MACHINE_CPUFLAG_SSE4_2
+#include <rte_hash_crc.h>
+#define DEFAULT_HASH_FUNC       rte_hash_crc
+#else
+#include <rte_jhash.h>
+#define DEFAULT_HASH_FUNC       rte_jhash
+#endif
+
+#define ENICPMD_CLSF_HASH_ENTRIES       ENICPMD_FDIR_MAX
+
+void enic_fdir_stats_get(struct enic *enic, struct rte_eth_fdir_stats *stats)
+{
+	*stats = enic->fdir.stats;
+}
+
+int enic_fdir_del_fltr(struct enic *enic, struct rte_eth_fdir_filter *params)
+{
+	int32_t pos;
+	struct enic_fdir_node *key;
+	/* See if the key is in the table */
+	pos = rte_hash_del_key(enic->fdir.hash, params);
+	switch (pos) {
+	case -EINVAL:
+	case -ENOENT:
+		enic->fdir.stats.f_remove++;
+		return -EINVAL;
+	default:
+		/* The entry is present in the table */
+		key = enic->fdir.nodes[pos];
+
+		/* Delete the filter */
+		vnic_dev_classifier(enic->vdev, CLSF_DEL,
+			&key->fltr_id, NULL);
+		rte_free(key);
+		enic->fdir.nodes[pos] = NULL;
+		enic->fdir.stats.free++;
+		enic->fdir.stats.remove++;
+		break;
+	}
+	return 0;
+}
+
+int enic_fdir_add_fltr(struct enic *enic, struct rte_eth_fdir_filter *params)
+{
+	struct enic_fdir_node *key;
+	struct filter fltr = {0};
+	int32_t pos;
+	u8 do_free = 0;
+	u16 old_fltr_id = 0;
+	u32 flowtype_supported;
+	u16 flex_bytes;
+	u16 queue;
+
+	flowtype_supported = (
+		(RTE_ETH_FLOW_NONFRAG_IPV4_TCP == params->input.flow_type) ||
+		(RTE_ETH_FLOW_NONFRAG_IPV4_UDP == params->input.flow_type));
+
+	flex_bytes = ((params->input.flow_ext.flexbytes[1] << 8 & 0xFF00) |
+		(params->input.flow_ext.flexbytes[0] & 0xFF));
+
+	if (!enic->fdir.hash ||
+		(params->input.flow_ext.vlan_tci & 0xFFF) ||
+		!flowtype_supported || flex_bytes ||
+		params->action.behavior /* drop */) {
+		enic->fdir.stats.f_add++;
+		return -ENOTSUP;
+	}
+
+	queue = params->action.rx_queue;
+	/* See if the key is already there in the table */
+	pos = rte_hash_del_key(enic->fdir.hash, params);
+	switch (pos) {
+	case -EINVAL:
+		enic->fdir.stats.f_add++;
+		return -EINVAL;
+	case -ENOENT:
+		/* Add a new classifier entry */
+		if (!enic->fdir.stats.free) {
+			enic->fdir.stats.f_add++;
+			return -ENOSPC;
+		}
+		key = rte_zmalloc("enic_fdir_node",
+				  sizeof(struct enic_fdir_node), 0);
+		if (!key) {
+			enic->fdir.stats.f_add++;
+			return -ENOMEM;
+		}
+		break;
+	default:
+		/* The entry is already present in the table.
+		 * Check if there is a change in queue
+		 */
+		key = enic->fdir.nodes[pos];
+		enic->fdir.nodes[pos] = NULL;
+		if (unlikely(key->rq_index == queue)) {
+			/* Nothing to be done */
+			pos = rte_hash_add_key(enic->fdir.hash, params);
+			enic->fdir.nodes[pos] = key;
+			enic->fdir.stats.f_add++;
+			dev_warning(enic,
+				"FDIR rule is already present\n");
+			return 0;
+		}
+
+		if (likely(enic->fdir.stats.free)) {
+			/* Add the filter and then delete the old one.
+			 * This is to avoid packets from going into the
+			 * default queue during the window between
+			 * delete and add
+			 */
+			do_free = 1;
+			old_fltr_id = key->fltr_id;
+		} else {
+			/* No free slots in the classifier.
+			 * Delete the filter and add the modified one later
+			 */
+			vnic_dev_classifier(enic->vdev, CLSF_DEL,
+				&key->fltr_id, NULL);
+			enic->fdir.stats.free++;
+		}
+
+		break;
+	}
+
+	key->filter = *params;
+	key->rq_index = queue;
+
+	fltr.type = FILTER_IPV4_5TUPLE;
+	fltr.u.ipv4.src_addr = rte_be_to_cpu_32(
+		params->input.flow.ip4_flow.src_ip);
+	fltr.u.ipv4.dst_addr = rte_be_to_cpu_32(
+		params->input.flow.ip4_flow.dst_ip);
+	fltr.u.ipv4.src_port = rte_be_to_cpu_16(
+		params->input.flow.udp4_flow.src_port);
+	fltr.u.ipv4.dst_port = rte_be_to_cpu_16(
+		params->input.flow.udp4_flow.dst_port);
+
+	if (RTE_ETH_FLOW_NONFRAG_IPV4_TCP == params->input.flow_type)
+		fltr.u.ipv4.protocol = PROTO_TCP;
+	else
+		fltr.u.ipv4.protocol = PROTO_UDP;
+
+	fltr.u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
+
+	if (!vnic_dev_classifier(enic->vdev, CLSF_ADD, &queue, &fltr)) {
+		key->fltr_id = queue;
+	} else {
+		dev_err(enic, "Add classifier entry failed\n");
+		enic->fdir.stats.f_add++;
+		rte_free(key);
+		return -1;
+	}
+
+	if (do_free)
+		vnic_dev_classifier(enic->vdev, CLSF_DEL, &old_fltr_id, NULL);
+	else{
+		enic->fdir.stats.free--;
+		enic->fdir.stats.add++;
+	}
+
+	pos = rte_hash_add_key(enic->fdir.hash, params);
+	enic->fdir.nodes[pos] = key;
+	return 0;
+}
+
+void enic_clsf_destroy(struct enic *enic)
+{
+	u32 index;
+	struct enic_fdir_node *key;
+	/* delete classifier entries */
+	for (index = 0; index < ENICPMD_FDIR_MAX; index++) {
+		key = enic->fdir.nodes[index];
+		if (key) {
+			vnic_dev_classifier(enic->vdev, CLSF_DEL,
+				&key->fltr_id, NULL);
+			rte_free(key);
+		}
+	}
+
+	if (enic->fdir.hash) {
+		rte_hash_free(enic->fdir.hash);
+		enic->fdir.hash = NULL;
+	}
+}
+
+int enic_clsf_init(struct enic *enic)
+{
+	struct rte_hash_parameters hash_params = {
+		.name = "enicpmd_clsf_hash",
+		.entries = ENICPMD_CLSF_HASH_ENTRIES,
+		.key_len = sizeof(struct rte_eth_fdir_filter),
+		.hash_func = DEFAULT_HASH_FUNC,
+		.hash_func_init_val = 0,
+		.socket_id = SOCKET_ID_ANY,
+	};
+
+	enic->fdir.hash = rte_hash_create(&hash_params);
+	memset(&enic->fdir.stats, 0, sizeof(enic->fdir.stats));
+	enic->fdir.stats.free = ENICPMD_FDIR_MAX;
+	return NULL == enic->fdir.hash;
+}