2 * Copyright 2008-2014 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 * Copyright (c) 2014, Cisco Systems, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
37 #include <rte_ethdev.h>
38 #include <rte_malloc.h>
40 #include <rte_byteorder.h>
42 #include "enic_compat.h"
44 #include "wq_enet_desc.h"
45 #include "rq_enet_desc.h"
46 #include "cq_enet_desc.h"
47 #include "vnic_enet.h"
52 #include "vnic_intr.h"
55 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
56 #include <rte_hash_crc.h>
57 #define DEFAULT_HASH_FUNC rte_hash_crc
59 #include <rte_jhash.h>
60 #define DEFAULT_HASH_FUNC rte_jhash
63 #define ENICPMD_CLSF_HASH_ENTRIES ENICPMD_FDIR_MAX
65 void enic_fdir_stats_get(struct enic *enic, struct rte_eth_fdir_stats *stats)
67 *stats = enic->fdir.stats;
70 int enic_fdir_del_fltr(struct enic *enic, struct rte_eth_fdir_filter *params)
73 struct enic_fdir_node *key;
74 /* See if the key is in the table */
75 pos = rte_hash_del_key(enic->fdir.hash, params);
79 enic->fdir.stats.f_remove++;
82 /* The entry is present in the table */
83 key = enic->fdir.nodes[pos];
85 /* Delete the filter */
86 vnic_dev_classifier(enic->vdev, CLSF_DEL,
89 enic->fdir.nodes[pos] = NULL;
90 enic->fdir.stats.free++;
91 enic->fdir.stats.remove++;
97 int enic_fdir_add_fltr(struct enic *enic, struct rte_eth_fdir_filter *params)
99 struct enic_fdir_node *key;
100 struct filter fltr = {0};
104 u32 flowtype_supported;
108 flowtype_supported = (
109 (RTE_ETH_FLOW_NONFRAG_IPV4_TCP == params->input.flow_type) ||
110 (RTE_ETH_FLOW_NONFRAG_IPV4_UDP == params->input.flow_type));
112 flex_bytes = ((params->input.flow_ext.flexbytes[1] << 8 & 0xFF00) |
113 (params->input.flow_ext.flexbytes[0] & 0xFF));
115 if (!enic->fdir.hash ||
116 (params->input.flow_ext.vlan_tci & 0xFFF) ||
117 !flowtype_supported || flex_bytes ||
118 params->action.behavior /* drop */) {
119 enic->fdir.stats.f_add++;
123 /* Get the enicpmd RQ from the DPDK Rx queue */
124 queue = enic_sop_rq(params->action.rx_queue);
126 /* See if the key is already there in the table */
127 pos = rte_hash_del_key(enic->fdir.hash, params);
130 enic->fdir.stats.f_add++;
133 /* Add a new classifier entry */
134 if (!enic->fdir.stats.free) {
135 enic->fdir.stats.f_add++;
138 key = rte_zmalloc("enic_fdir_node",
139 sizeof(struct enic_fdir_node), 0);
141 enic->fdir.stats.f_add++;
146 /* The entry is already present in the table.
147 * Check if there is a change in queue
149 key = enic->fdir.nodes[pos];
150 enic->fdir.nodes[pos] = NULL;
151 if (unlikely(key->rq_index == queue)) {
152 /* Nothing to be done */
153 enic->fdir.stats.f_add++;
154 pos = rte_hash_add_key(enic->fdir.hash, params);
156 dev_err(enic, "Add hash key failed\n");
159 enic->fdir.nodes[pos] = key;
161 "FDIR rule is already present\n");
165 if (likely(enic->fdir.stats.free)) {
166 /* Add the filter and then delete the old one.
167 * This is to avoid packets from going into the
168 * default queue during the window between
172 old_fltr_id = key->fltr_id;
174 /* No free slots in the classifier.
175 * Delete the filter and add the modified one later
177 vnic_dev_classifier(enic->vdev, CLSF_DEL,
178 &key->fltr_id, NULL);
179 enic->fdir.stats.free++;
185 key->filter = *params;
186 key->rq_index = queue;
188 fltr.type = FILTER_IPV4_5TUPLE;
189 fltr.u.ipv4.src_addr = rte_be_to_cpu_32(
190 params->input.flow.ip4_flow.src_ip);
191 fltr.u.ipv4.dst_addr = rte_be_to_cpu_32(
192 params->input.flow.ip4_flow.dst_ip);
193 fltr.u.ipv4.src_port = rte_be_to_cpu_16(
194 params->input.flow.udp4_flow.src_port);
195 fltr.u.ipv4.dst_port = rte_be_to_cpu_16(
196 params->input.flow.udp4_flow.dst_port);
198 if (RTE_ETH_FLOW_NONFRAG_IPV4_TCP == params->input.flow_type)
199 fltr.u.ipv4.protocol = PROTO_TCP;
201 fltr.u.ipv4.protocol = PROTO_UDP;
203 fltr.u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
205 if (!vnic_dev_classifier(enic->vdev, CLSF_ADD, &queue, &fltr)) {
206 key->fltr_id = queue;
208 dev_err(enic, "Add classifier entry failed\n");
209 enic->fdir.stats.f_add++;
215 vnic_dev_classifier(enic->vdev, CLSF_DEL, &old_fltr_id, NULL);
217 enic->fdir.stats.free--;
218 enic->fdir.stats.add++;
221 pos = rte_hash_add_key(enic->fdir.hash, params);
223 enic->fdir.stats.f_add++;
224 dev_err(enic, "Add hash key failed\n");
228 enic->fdir.nodes[pos] = key;
232 void enic_clsf_destroy(struct enic *enic)
235 struct enic_fdir_node *key;
236 /* delete classifier entries */
237 for (index = 0; index < ENICPMD_FDIR_MAX; index++) {
238 key = enic->fdir.nodes[index];
240 vnic_dev_classifier(enic->vdev, CLSF_DEL,
241 &key->fltr_id, NULL);
246 if (enic->fdir.hash) {
247 rte_hash_free(enic->fdir.hash);
248 enic->fdir.hash = NULL;
252 int enic_clsf_init(struct enic *enic)
254 char clsf_name[RTE_HASH_NAMESIZE];
255 struct rte_hash_parameters hash_params = {
257 .entries = ENICPMD_CLSF_HASH_ENTRIES,
258 .key_len = sizeof(struct rte_eth_fdir_filter),
259 .hash_func = DEFAULT_HASH_FUNC,
260 .hash_func_init_val = 0,
261 .socket_id = SOCKET_ID_ANY,
263 snprintf(clsf_name, RTE_HASH_NAMESIZE, "enic_clsf_%s", enic->bdf_name);
264 enic->fdir.hash = rte_hash_create(&hash_params);
265 memset(&enic->fdir.stats, 0, sizeof(enic->fdir.stats));
266 enic->fdir.stats.free = ENICPMD_FDIR_MAX;
267 return NULL == enic->fdir.hash;