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_item *item, *items = 0;
45 struct rte_flow_action *action, *actions = 0;
49 vxlan_hdr_sz = sizeof (vxlan_header_t),
50 raw_sz = sizeof (struct rte_flow_item_raw)
55 struct rte_flow_item_raw item;
56 u8 val[raw_sz + vxlan_hdr_sz];
59 u16 src_port, dst_port, src_port_mask, dst_port_mask;
63 if (f->actions & (~xd->supported_flow_actions))
64 return VNET_FLOW_ERROR_NOT_SUPPORTED;
68 vec_add2 (items, item, 1);
69 item->type = RTE_FLOW_ITEM_TYPE_ETH;
71 item->mask = any_eth + 1;
74 if (f->type != VNET_FLOW_TYPE_IP4_VXLAN)
76 vec_add2 (items, item, 1);
77 item->type = RTE_FLOW_ITEM_TYPE_VLAN;
78 item->spec = any_vlan;
79 item->mask = any_vlan + 1;
83 vec_add2 (items, item, 1);
84 if (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE)
86 vnet_flow_ip6_n_tuple_t *t6 = &f->ip6_n_tuple;
87 clib_memcpy_fast (ip6[0].hdr.src_addr, &t6->src_addr.addr, 16);
88 clib_memcpy_fast (ip6[1].hdr.src_addr, &t6->src_addr.mask, 16);
89 clib_memcpy_fast (ip6[0].hdr.dst_addr, &t6->dst_addr.addr, 16);
90 clib_memcpy_fast (ip6[1].hdr.dst_addr, &t6->dst_addr.mask, 16);
91 item->type = RTE_FLOW_ITEM_TYPE_IPV6;
95 src_port = t6->src_port.port;
96 dst_port = t6->dst_port.port;
97 src_port_mask = t6->src_port.mask;
98 dst_port_mask = t6->dst_port.mask;
99 protocol = t6->protocol;
101 else if (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE)
103 vnet_flow_ip4_n_tuple_t *t4 = &f->ip4_n_tuple;
104 ip4[0].hdr.src_addr = t4->src_addr.addr.as_u32;
105 ip4[1].hdr.src_addr = t4->src_addr.mask.as_u32;
106 ip4[0].hdr.dst_addr = t4->dst_addr.addr.as_u32;
107 ip4[1].hdr.dst_addr = t4->dst_addr.mask.as_u32;
108 item->type = RTE_FLOW_ITEM_TYPE_IPV4;
110 item->mask = ip4 + 1;
112 src_port = t4->src_port.port;
113 dst_port = t4->dst_port.port;
114 src_port_mask = t4->src_port.mask;
115 dst_port_mask = t4->dst_port.mask;
116 protocol = t4->protocol;
118 else if (f->type == VNET_FLOW_TYPE_IP4_VXLAN)
120 vnet_flow_ip4_vxlan_t *v4 = &f->ip4_vxlan;
121 ip4[0].hdr.src_addr = v4->src_addr.as_u32;
122 ip4[1].hdr.src_addr = -1;
123 ip4[0].hdr.dst_addr = v4->dst_addr.as_u32;
124 ip4[1].hdr.dst_addr = -1;
125 item->type = RTE_FLOW_ITEM_TYPE_IPV4;
127 item->mask = ip4 + 1;
129 dst_port = v4->dst_port;
133 protocol = IP_PROTOCOL_UDP;
137 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
142 vec_add2 (items, item, 1);
143 if (protocol == IP_PROTOCOL_UDP)
145 udp[0].hdr.src_port = clib_host_to_net_u16 (src_port);
146 udp[1].hdr.src_port = clib_host_to_net_u16 (src_port_mask);
147 udp[0].hdr.dst_port = clib_host_to_net_u16 (dst_port);
148 udp[1].hdr.dst_port = clib_host_to_net_u16 (dst_port_mask);
149 item->type = RTE_FLOW_ITEM_TYPE_UDP;
151 item->mask = udp + 1;
153 else if (protocol == IP_PROTOCOL_TCP)
155 tcp[0].hdr.src_port = clib_host_to_net_u16 (src_port);
156 tcp[1].hdr.src_port = clib_host_to_net_u16 (src_port_mask);
157 tcp[0].hdr.dst_port = clib_host_to_net_u16 (dst_port);
158 tcp[1].hdr.dst_port = clib_host_to_net_u16 (dst_port_mask);
159 item->type = RTE_FLOW_ITEM_TYPE_TCP;
161 item->mask = tcp + 1;
165 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
169 /* Tunnel header match */
170 if (f->type == VNET_FLOW_TYPE_IP4_VXLAN)
172 u32 vni = f->ip4_vxlan.vni;
173 vxlan_header_t spec_hdr = {
174 .flags = VXLAN_FLAGS_I,
175 .vni_reserved = clib_host_to_net_u32 (vni << 8)
177 vxlan_header_t mask_hdr = {
179 .vni_reserved = clib_host_to_net_u32 (((u32) - 1) << 8)
182 clib_memset (raw, 0, sizeof raw);
183 raw[0].item.relative = 1;
184 raw[0].item.length = vxlan_hdr_sz;
186 clib_memcpy_fast (raw[0].val + raw_sz, &spec_hdr, vxlan_hdr_sz);
187 raw[0].item.pattern = raw[0].val + raw_sz;
188 clib_memcpy_fast (raw[1].val + raw_sz, &mask_hdr, vxlan_hdr_sz);
189 raw[1].item.pattern = raw[1].val + raw_sz;
191 vec_add2 (items, item, 1);
192 item->type = RTE_FLOW_ITEM_TYPE_RAW;
194 item->mask = raw + 1;
197 vec_add2 (items, item, 1);
198 item->type = RTE_FLOW_ITEM_TYPE_END;
201 vec_add2 (actions, action, 1);
202 action->type = RTE_FLOW_ACTION_TYPE_PASSTHRU;
204 vec_add2 (actions, action, 1);
206 action->type = RTE_FLOW_ACTION_TYPE_MARK;
207 action->conf = &mark;
209 vec_add2 (actions, action, 1);
210 action->type = RTE_FLOW_ACTION_TYPE_END;
212 fe->handle = rte_flow_create (xd->device_index, &ingress, items, actions,
213 &xd->last_flow_error);
216 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
225 dpdk_flow_ops_fn (vnet_main_t * vnm, vnet_flow_dev_op_t op, u32 dev_instance,
226 u32 flow_index, uword * private_data)
228 dpdk_main_t *dm = &dpdk_main;
229 vnet_flow_t *flow = vnet_get_flow (flow_index);
230 dpdk_device_t *xd = vec_elt_at_index (dm->devices, dev_instance);
231 dpdk_flow_entry_t *fe;
232 dpdk_flow_lookup_entry_t *fle = 0;
235 /* recycle old flow lookup entries only after the main loop counter
236 increases - i.e. previously DMA'ed packets were handled */
237 if (vec_len (xd->parked_lookup_indexes) > 0 &&
238 xd->parked_loop_count != dm->vlib_main->main_loop_count)
242 vec_foreach (fl_index, xd->parked_lookup_indexes)
243 pool_put_index (xd->flow_lookup_entries, *fl_index);
244 vec_reset_length (xd->flow_lookup_entries);
247 if (op == VNET_FLOW_DEV_OP_DEL_FLOW)
249 ASSERT (*private_data >= vec_len (xd->flow_entries));
251 fe = vec_elt_at_index (xd->flow_entries, *private_data);
253 if ((rv = rte_flow_destroy (xd->device_index, fe->handle,
254 &xd->last_flow_error)))
255 return VNET_FLOW_ERROR_INTERNAL;
259 /* make sure no action is taken for in-flight (marked) packets */
260 fle = pool_elt_at_index (xd->flow_lookup_entries, fe->mark);
261 clib_memset (fle, -1, sizeof (*fle));
262 vec_add1 (xd->parked_lookup_indexes, fe->mark);
263 xd->parked_loop_count = dm->vlib_main->main_loop_count;
266 clib_memset (fe, 0, sizeof (*fe));
267 pool_put (xd->flow_entries, fe);
269 goto disable_rx_offload;
272 if (op != VNET_FLOW_DEV_OP_ADD_FLOW)
273 return VNET_FLOW_ERROR_NOT_SUPPORTED;
275 pool_get (xd->flow_entries, fe);
276 fe->flow_index = flow->index;
278 if (flow->actions == 0)
280 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
284 /* if we need to mark packets, assign one mark */
285 if (flow->actions & (VNET_FLOW_ACTION_MARK |
286 VNET_FLOW_ACTION_REDIRECT_TO_NODE |
287 VNET_FLOW_ACTION_BUFFER_ADVANCE))
290 if (xd->flow_lookup_entries == 0)
291 pool_get_aligned (xd->flow_lookup_entries, fle,
292 CLIB_CACHE_LINE_BYTES);
293 pool_get_aligned (xd->flow_lookup_entries, fle, CLIB_CACHE_LINE_BYTES);
294 fe->mark = fle - xd->flow_lookup_entries;
296 /* install entry in the lookup table */
297 clib_memset (fle, -1, sizeof (*fle));
298 if (flow->actions & VNET_FLOW_ACTION_MARK)
299 fle->flow_id = flow->mark_flow_id;
300 if (flow->actions & VNET_FLOW_ACTION_REDIRECT_TO_NODE)
301 fle->next_index = flow->redirect_device_input_next_index;
302 if (flow->actions & VNET_FLOW_ACTION_BUFFER_ADVANCE)
303 fle->buffer_advance = flow->buffer_advance;
308 if ((xd->flags & DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD) == 0)
310 xd->flags |= DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD;
311 dpdk_device_setup (xd);
316 case VNET_FLOW_TYPE_IP4_N_TUPLE:
317 case VNET_FLOW_TYPE_IP6_N_TUPLE:
318 case VNET_FLOW_TYPE_IP4_VXLAN:
319 if ((rv = dpdk_flow_add (xd, flow, fe)))
323 rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
327 *private_data = fe - xd->flow_entries;
332 clib_memset (fe, 0, sizeof (*fe));
333 pool_put (xd->flow_entries, fe);
336 clib_memset (fle, -1, sizeof (*fle));
337 pool_put (xd->flow_lookup_entries, fle);
341 if ((xd->flags & DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD) != 0
342 && pool_elts (xd->flow_entries) == 0)
344 xd->flags &= ~DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD;
345 dpdk_device_setup (xd);
352 format_dpdk_flow (u8 * s, va_list * args)
354 u32 dev_instance = va_arg (*args, u32);
355 u32 flow_index = va_arg (*args, u32);
356 uword private_data = va_arg (*args, uword);
357 dpdk_main_t *dm = &dpdk_main;
358 dpdk_device_t *xd = vec_elt_at_index (dm->devices, dev_instance);
359 dpdk_flow_entry_t *fe;
361 if (flow_index == ~0)
363 s = format (s, "%-25s: %U\n", "supported flow actions",
364 format_flow_actions, xd->supported_flow_actions);
365 s = format (s, "%-25s: %d\n", "last DPDK error type",
366 xd->last_flow_error.type);
367 s = format (s, "%-25s: %s\n", "last DPDK error message",
368 xd->last_flow_error.message ? xd->last_flow_error.message :
373 if (private_data >= vec_len (xd->flow_entries))
374 return format (s, "unknown flow");
376 fe = vec_elt_at_index (xd->flow_entries, private_data);
377 s = format (s, "mark %u", fe->mark);
382 * fd.io coding-style-patch-verification: ON
385 * eval: (c-set-style "gnu")