2 * Copyright (c) 2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/vnet.h>
17 #include <vppinfra/vec.h>
18 #include <vppinfra/format.h>
19 #include <vlib/unix/cj.h>
22 #include <vnet/ip/ip.h>
23 #include <vnet/ethernet/ethernet.h>
24 #include <vnet/ethernet/arp_packet.h>
25 #include <vnet/vxlan/vxlan.h>
26 #include <dpdk/device/dpdk.h>
28 #include <dpdk/device/dpdk_priv.h>
29 #include <vppinfra/error.h>
31 /* constant structs */
32 static const struct rte_flow_attr ingress = {.ingress = 1 };
33 static const struct rte_flow_item_eth any_eth[2] = { };
34 static const struct rte_flow_item_vlan any_vlan[2] = { };
37 dpdk_flow_add (dpdk_device_t * xd, vnet_flow_t * f, dpdk_flow_entry_t * fe)
39 struct rte_flow_item_ipv4 ip4[2] = { };
40 struct rte_flow_item_ipv6 ip6[2] = { };
41 struct rte_flow_item_udp udp[2] = { };
42 struct rte_flow_item_tcp tcp[2] = { };
43 struct rte_flow_action_mark mark = { 0 };
44 struct rte_flow_action_queue queue = { 0 };
45 struct rte_flow_item *item, *items = 0;
46 struct rte_flow_action *action, *actions = 0;
50 vxlan_hdr_sz = sizeof (vxlan_header_t),
51 raw_sz = sizeof (struct rte_flow_item_raw)
56 struct rte_flow_item_raw item;
57 u8 val[raw_sz + vxlan_hdr_sz];
60 u16 src_port, dst_port, src_port_mask, dst_port_mask;
64 if (f->actions & (~xd->supported_flow_actions))
65 return VNET_FLOW_ERROR_NOT_SUPPORTED;
69 vec_add2 (items, item, 1);
70 item->type = RTE_FLOW_ITEM_TYPE_ETH;
72 item->mask = any_eth + 1;
75 if (f->type != VNET_FLOW_TYPE_IP4_VXLAN)
77 vec_add2 (items, item, 1);
78 item->type = RTE_FLOW_ITEM_TYPE_VLAN;
79 item->spec = any_vlan;
80 item->mask = any_vlan + 1;
84 vec_add2 (items, item, 1);
85 if (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE)
87 vnet_flow_ip6_n_tuple_t *t6 = &f->ip6_n_tuple;
88 clib_memcpy_fast (ip6[0].hdr.src_addr, &t6->src_addr.addr, 16);
89 clib_memcpy_fast (ip6[1].hdr.src_addr, &t6->src_addr.mask, 16);
90 clib_memcpy_fast (ip6[0].hdr.dst_addr, &t6->dst_addr.addr, 16);
91 clib_memcpy_fast (ip6[1].hdr.dst_addr, &t6->dst_addr.mask, 16);
92 item->type = RTE_FLOW_ITEM_TYPE_IPV6;
96 src_port = t6->src_port.port;
97 dst_port = t6->dst_port.port;
98 src_port_mask = t6->src_port.mask;
99 dst_port_mask = t6->dst_port.mask;
100 protocol = t6->protocol;
102 else if (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE)
104 vnet_flow_ip4_n_tuple_t *t4 = &f->ip4_n_tuple;
105 ip4[0].hdr.src_addr = t4->src_addr.addr.as_u32;
106 ip4[1].hdr.src_addr = t4->src_addr.mask.as_u32;
107 ip4[0].hdr.dst_addr = t4->dst_addr.addr.as_u32;
108 ip4[1].hdr.dst_addr = t4->dst_addr.mask.as_u32;
109 item->type = RTE_FLOW_ITEM_TYPE_IPV4;
111 item->mask = ip4 + 1;
113 src_port = t4->src_port.port;
114 dst_port = t4->dst_port.port;
115 src_port_mask = t4->src_port.mask;
116 dst_port_mask = t4->dst_port.mask;
117 protocol = t4->protocol;
119 else if (f->type == VNET_FLOW_TYPE_IP4_VXLAN)
121 vnet_flow_ip4_vxlan_t *v4 = &f->ip4_vxlan;
122 ip4[0].hdr.src_addr = v4->src_addr.as_u32;
123 ip4[1].hdr.src_addr = -1;
124 ip4[0].hdr.dst_addr = v4->dst_addr.as_u32;
125 ip4[1].hdr.dst_addr = -1;
126 item->type = RTE_FLOW_ITEM_TYPE_IPV4;
128 item->mask = ip4 + 1;
130 dst_port = v4->dst_port;
134 protocol = IP_PROTOCOL_UDP;
138 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
143 vec_add2 (items, item, 1);
144 if (protocol == IP_PROTOCOL_UDP)
146 udp[0].hdr.src_port = clib_host_to_net_u16 (src_port);
147 udp[1].hdr.src_port = clib_host_to_net_u16 (src_port_mask);
148 udp[0].hdr.dst_port = clib_host_to_net_u16 (dst_port);
149 udp[1].hdr.dst_port = clib_host_to_net_u16 (dst_port_mask);
150 item->type = RTE_FLOW_ITEM_TYPE_UDP;
152 item->mask = udp + 1;
154 else if (protocol == IP_PROTOCOL_TCP)
156 tcp[0].hdr.src_port = clib_host_to_net_u16 (src_port);
157 tcp[1].hdr.src_port = clib_host_to_net_u16 (src_port_mask);
158 tcp[0].hdr.dst_port = clib_host_to_net_u16 (dst_port);
159 tcp[1].hdr.dst_port = clib_host_to_net_u16 (dst_port_mask);
160 item->type = RTE_FLOW_ITEM_TYPE_TCP;
162 item->mask = tcp + 1;
166 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
170 /* Tunnel header match */
171 if (f->type == VNET_FLOW_TYPE_IP4_VXLAN)
173 u32 vni = f->ip4_vxlan.vni;
174 vxlan_header_t spec_hdr = {
175 .flags = VXLAN_FLAGS_I,
176 .vni_reserved = clib_host_to_net_u32 (vni << 8)
178 vxlan_header_t mask_hdr = {
180 .vni_reserved = clib_host_to_net_u32 (((u32) - 1) << 8)
183 clib_memset (raw, 0, sizeof raw);
184 raw[0].item.relative = 1;
185 raw[0].item.length = vxlan_hdr_sz;
187 clib_memcpy_fast (raw[0].val + raw_sz, &spec_hdr, vxlan_hdr_sz);
188 raw[0].item.pattern = raw[0].val + raw_sz;
189 clib_memcpy_fast (raw[1].val + raw_sz, &mask_hdr, vxlan_hdr_sz);
190 raw[1].item.pattern = raw[1].val + raw_sz;
192 vec_add2 (items, item, 1);
193 item->type = RTE_FLOW_ITEM_TYPE_RAW;
195 item->mask = raw + 1;
198 vec_add2 (items, item, 1);
199 item->type = RTE_FLOW_ITEM_TYPE_END;
202 vec_add2 (actions, action, 1);
203 action->type = RTE_FLOW_ACTION_TYPE_PASSTHRU;
205 if (f->actions & VNET_FLOW_ACTION_REDIRECT_TO_QUEUE)
207 vec_add2 (actions, action, 1);
208 queue.index = f->redirect_queue;
209 action->type = RTE_FLOW_ACTION_TYPE_QUEUE;
210 action->conf = &queue;
213 if (f->actions & VNET_FLOW_ACTION_MARK)
215 vec_add2 (actions, action, 1);
217 action->type = RTE_FLOW_ACTION_TYPE_MARK;
218 action->conf = &mark;
221 vec_add2 (actions, action, 1);
222 action->type = RTE_FLOW_ACTION_TYPE_END;
224 rv = rte_flow_validate (xd->device_index, &ingress, items, actions,
225 &xd->last_flow_error);
230 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
231 else if (rv == -EEXIST)
232 rv = VNET_FLOW_ERROR_ALREADY_EXISTS;
234 rv = VNET_FLOW_ERROR_INTERNAL;
238 fe->handle = rte_flow_create (xd->device_index, &ingress, items, actions,
239 &xd->last_flow_error);
242 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
251 dpdk_flow_ops_fn (vnet_main_t * vnm, vnet_flow_dev_op_t op, u32 dev_instance,
252 u32 flow_index, uword * private_data)
254 dpdk_main_t *dm = &dpdk_main;
255 vnet_flow_t *flow = vnet_get_flow (flow_index);
256 dpdk_device_t *xd = vec_elt_at_index (dm->devices, dev_instance);
257 dpdk_flow_entry_t *fe;
258 dpdk_flow_lookup_entry_t *fle = 0;
261 /* recycle old flow lookup entries only after the main loop counter
262 increases - i.e. previously DMA'ed packets were handled */
263 if (vec_len (xd->parked_lookup_indexes) > 0 &&
264 xd->parked_loop_count != dm->vlib_main->main_loop_count)
268 vec_foreach (fl_index, xd->parked_lookup_indexes)
269 pool_put_index (xd->flow_lookup_entries, *fl_index);
270 vec_reset_length (xd->flow_lookup_entries);
273 if (op == VNET_FLOW_DEV_OP_DEL_FLOW)
275 ASSERT (*private_data >= vec_len (xd->flow_entries));
277 fe = vec_elt_at_index (xd->flow_entries, *private_data);
279 if ((rv = rte_flow_destroy (xd->device_index, fe->handle,
280 &xd->last_flow_error)))
281 return VNET_FLOW_ERROR_INTERNAL;
285 /* make sure no action is taken for in-flight (marked) packets */
286 fle = pool_elt_at_index (xd->flow_lookup_entries, fe->mark);
287 clib_memset (fle, -1, sizeof (*fle));
288 vec_add1 (xd->parked_lookup_indexes, fe->mark);
289 xd->parked_loop_count = dm->vlib_main->main_loop_count;
292 clib_memset (fe, 0, sizeof (*fe));
293 pool_put (xd->flow_entries, fe);
295 goto disable_rx_offload;
298 if (op != VNET_FLOW_DEV_OP_ADD_FLOW)
299 return VNET_FLOW_ERROR_NOT_SUPPORTED;
301 pool_get (xd->flow_entries, fe);
302 fe->flow_index = flow->index;
304 if (flow->actions == 0)
306 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
310 /* if we need to mark packets, assign one mark */
311 if (flow->actions & (VNET_FLOW_ACTION_MARK |
312 VNET_FLOW_ACTION_REDIRECT_TO_NODE |
313 VNET_FLOW_ACTION_BUFFER_ADVANCE))
316 if (xd->flow_lookup_entries == 0)
317 pool_get_aligned (xd->flow_lookup_entries, fle,
318 CLIB_CACHE_LINE_BYTES);
319 pool_get_aligned (xd->flow_lookup_entries, fle, CLIB_CACHE_LINE_BYTES);
320 fe->mark = fle - xd->flow_lookup_entries;
322 /* install entry in the lookup table */
323 clib_memset (fle, -1, sizeof (*fle));
324 if (flow->actions & VNET_FLOW_ACTION_MARK)
325 fle->flow_id = flow->mark_flow_id;
326 if (flow->actions & VNET_FLOW_ACTION_REDIRECT_TO_NODE)
327 fle->next_index = flow->redirect_device_input_next_index;
328 if (flow->actions & VNET_FLOW_ACTION_BUFFER_ADVANCE)
329 fle->buffer_advance = flow->buffer_advance;
334 if ((xd->flags & DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD) == 0)
336 xd->flags |= DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD;
337 dpdk_device_setup (xd);
342 case VNET_FLOW_TYPE_IP4_N_TUPLE:
343 case VNET_FLOW_TYPE_IP6_N_TUPLE:
344 case VNET_FLOW_TYPE_IP4_VXLAN:
345 if ((rv = dpdk_flow_add (xd, flow, fe)))
349 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
353 *private_data = fe - xd->flow_entries;
358 clib_memset (fe, 0, sizeof (*fe));
359 pool_put (xd->flow_entries, fe);
362 clib_memset (fle, -1, sizeof (*fle));
363 pool_put (xd->flow_lookup_entries, fle);
367 if ((xd->flags & DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD) != 0
368 && pool_elts (xd->flow_entries) == 0)
370 xd->flags &= ~DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD;
371 dpdk_device_setup (xd);
378 format_dpdk_flow (u8 * s, va_list * args)
380 u32 dev_instance = va_arg (*args, u32);
381 u32 flow_index = va_arg (*args, u32);
382 uword private_data = va_arg (*args, uword);
383 dpdk_main_t *dm = &dpdk_main;
384 dpdk_device_t *xd = vec_elt_at_index (dm->devices, dev_instance);
385 dpdk_flow_entry_t *fe;
387 if (flow_index == ~0)
389 s = format (s, "%-25s: %U\n", "supported flow actions",
390 format_flow_actions, xd->supported_flow_actions);
391 s = format (s, "%-25s: %d\n", "last DPDK error type",
392 xd->last_flow_error.type);
393 s = format (s, "%-25s: %s\n", "last DPDK error message",
394 xd->last_flow_error.message ? xd->last_flow_error.message :
399 if (private_data >= vec_len (xd->flow_entries))
400 return format (s, "unknown flow");
402 fe = vec_elt_at_index (xd->flow_entries, private_data);
403 s = format (s, "mark %u", fe->mark);
408 * fd.io coding-style-patch-verification: ON
411 * eval: (c-set-style "gnu")