--- /dev/null
+/*
+ * 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;
+}
Code Review / deb_dpdk.git / blobdiff