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update source to Ceph Pacific 16.2.2
[ceph.git] / ceph / src / spdk / dpdk / lib / librte_ethdev / rte_flow.c
CommitLineData
11fdf7f2
TL		 1/* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2016 6WIND S.A.
3 * Copyright 2016 Mellanox Technologies, Ltd
4 */
5
6#include <errno.h>
7#include <stddef.h>
8#include <stdint.h>
9#include <string.h>
10
11#include <rte_common.h>
12#include <rte_errno.h>
13#include <rte_branch_prediction.h>
9f95a23c 14#include <rte_string_fns.h>
f67539c2
TL		 15#include <rte_mbuf.h>
16#include <rte_mbuf_dyn.h>
11fdf7f2
TL		 17#include "rte_ethdev.h"
18#include "rte_flow_driver.h"
19#include "rte_flow.h"
20
f67539c2
TL		 21/* Mbuf dynamic field name for metadata. */
22int32_t rte_flow_dynf_metadata_offs = -1;
23
24/* Mbuf dynamic field flag bit number for metadata. */
25uint64_t rte_flow_dynf_metadata_mask;
26
11fdf7f2
TL		 27/**
28 * Flow elements description tables.
29 */
30struct rte_flow_desc_data {
31 const char *name;
32 size_t size;
33};
34
35/** Generate flow_item[] entry. */
36#define MK_FLOW_ITEM(t, s) \
37 [RTE_FLOW_ITEM_TYPE_ ## t] = { \
38 .name = # t, \
39 .size = s, \
40 }
41
42/** Information about known flow pattern items. */
43static const struct rte_flow_desc_data rte_flow_desc_item[] = {
44 MK_FLOW_ITEM(END, 0),
45 MK_FLOW_ITEM(VOID, 0),
46 MK_FLOW_ITEM(INVERT, 0),
47 MK_FLOW_ITEM(ANY, sizeof(struct rte_flow_item_any)),
48 MK_FLOW_ITEM(PF, 0),
49 MK_FLOW_ITEM(VF, sizeof(struct rte_flow_item_vf)),
50 MK_FLOW_ITEM(PHY_PORT, sizeof(struct rte_flow_item_phy_port)),
51 MK_FLOW_ITEM(PORT_ID, sizeof(struct rte_flow_item_port_id)),
52 MK_FLOW_ITEM(RAW, sizeof(struct rte_flow_item_raw)),
53 MK_FLOW_ITEM(ETH, sizeof(struct rte_flow_item_eth)),
54 MK_FLOW_ITEM(VLAN, sizeof(struct rte_flow_item_vlan)),
55 MK_FLOW_ITEM(IPV4, sizeof(struct rte_flow_item_ipv4)),
56 MK_FLOW_ITEM(IPV6, sizeof(struct rte_flow_item_ipv6)),
57 MK_FLOW_ITEM(ICMP, sizeof(struct rte_flow_item_icmp)),
58 MK_FLOW_ITEM(UDP, sizeof(struct rte_flow_item_udp)),
59 MK_FLOW_ITEM(TCP, sizeof(struct rte_flow_item_tcp)),
60 MK_FLOW_ITEM(SCTP, sizeof(struct rte_flow_item_sctp)),
61 MK_FLOW_ITEM(VXLAN, sizeof(struct rte_flow_item_vxlan)),
11fdf7f2
TL		 62 MK_FLOW_ITEM(E_TAG, sizeof(struct rte_flow_item_e_tag)),
63 MK_FLOW_ITEM(NVGRE, sizeof(struct rte_flow_item_nvgre)),
9f95a23c
TL		 64 MK_FLOW_ITEM(MPLS, sizeof(struct rte_flow_item_mpls)),
65 MK_FLOW_ITEM(GRE, sizeof(struct rte_flow_item_gre)),
66 MK_FLOW_ITEM(FUZZY, sizeof(struct rte_flow_item_fuzzy)),
67 MK_FLOW_ITEM(GTP, sizeof(struct rte_flow_item_gtp)),
68 MK_FLOW_ITEM(GTPC, sizeof(struct rte_flow_item_gtp)),
69 MK_FLOW_ITEM(GTPU, sizeof(struct rte_flow_item_gtp)),
70 MK_FLOW_ITEM(ESP, sizeof(struct rte_flow_item_esp)),
11fdf7f2
TL		 71 MK_FLOW_ITEM(GENEVE, sizeof(struct rte_flow_item_geneve)),
72 MK_FLOW_ITEM(VXLAN_GPE, sizeof(struct rte_flow_item_vxlan_gpe)),
73 MK_FLOW_ITEM(ARP_ETH_IPV4, sizeof(struct rte_flow_item_arp_eth_ipv4)),
74 MK_FLOW_ITEM(IPV6_EXT, sizeof(struct rte_flow_item_ipv6_ext)),
75 MK_FLOW_ITEM(ICMP6, sizeof(struct rte_flow_item_icmp6)),
76 MK_FLOW_ITEM(ICMP6_ND_NS, sizeof(struct rte_flow_item_icmp6_nd_ns)),
77 MK_FLOW_ITEM(ICMP6_ND_NA, sizeof(struct rte_flow_item_icmp6_nd_na)),
78 MK_FLOW_ITEM(ICMP6_ND_OPT, sizeof(struct rte_flow_item_icmp6_nd_opt)),
79 MK_FLOW_ITEM(ICMP6_ND_OPT_SLA_ETH,
80 sizeof(struct rte_flow_item_icmp6_nd_opt_sla_eth)),
81 MK_FLOW_ITEM(ICMP6_ND_OPT_TLA_ETH,
82 sizeof(struct rte_flow_item_icmp6_nd_opt_tla_eth)),
9f95a23c
TL		 83 MK_FLOW_ITEM(MARK, sizeof(struct rte_flow_item_mark)),
84 MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta)),
f67539c2
TL		 85 MK_FLOW_ITEM(TAG, sizeof(struct rte_flow_item_tag)),
86 MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)),
87 MK_FLOW_ITEM(GTP_PSC, sizeof(struct rte_flow_item_gtp_psc)),
88 MK_FLOW_ITEM(PPPOES, sizeof(struct rte_flow_item_pppoe)),
89 MK_FLOW_ITEM(PPPOED, sizeof(struct rte_flow_item_pppoe)),
90 MK_FLOW_ITEM(PPPOE_PROTO_ID,
91 sizeof(struct rte_flow_item_pppoe_proto_id)),
92 MK_FLOW_ITEM(NSH, sizeof(struct rte_flow_item_nsh)),
93 MK_FLOW_ITEM(IGMP, sizeof(struct rte_flow_item_igmp)),
94 MK_FLOW_ITEM(AH, sizeof(struct rte_flow_item_ah)),
95 MK_FLOW_ITEM(HIGIG2, sizeof(struct rte_flow_item_higig2_hdr)),
96 MK_FLOW_ITEM(L2TPV3OIP, sizeof(struct rte_flow_item_l2tpv3oip)),
97 MK_FLOW_ITEM(PFCP, sizeof(struct rte_flow_item_pfcp)),
11fdf7f2
TL		 98};
99
100/** Generate flow_action[] entry. */
101#define MK_FLOW_ACTION(t, s) \
102 [RTE_FLOW_ACTION_TYPE_ ## t] = { \
103 .name = # t, \
104 .size = s, \
105 }
106
107/** Information about known flow actions. */
108static const struct rte_flow_desc_data rte_flow_desc_action[] = {
109 MK_FLOW_ACTION(END, 0),
110 MK_FLOW_ACTION(VOID, 0),
111 MK_FLOW_ACTION(PASSTHRU, 0),
9f95a23c 112 MK_FLOW_ACTION(JUMP, sizeof(struct rte_flow_action_jump)),
11fdf7f2
TL		 113 MK_FLOW_ACTION(MARK, sizeof(struct rte_flow_action_mark)),
114 MK_FLOW_ACTION(FLAG, 0),
115 MK_FLOW_ACTION(QUEUE, sizeof(struct rte_flow_action_queue)),
116 MK_FLOW_ACTION(DROP, 0),
117 MK_FLOW_ACTION(COUNT, sizeof(struct rte_flow_action_count)),
118 MK_FLOW_ACTION(RSS, sizeof(struct rte_flow_action_rss)),
119 MK_FLOW_ACTION(PF, 0),
120 MK_FLOW_ACTION(VF, sizeof(struct rte_flow_action_vf)),
121 MK_FLOW_ACTION(PHY_PORT, sizeof(struct rte_flow_action_phy_port)),
122 MK_FLOW_ACTION(PORT_ID, sizeof(struct rte_flow_action_port_id)),
9f95a23c
TL		 123 MK_FLOW_ACTION(METER, sizeof(struct rte_flow_action_meter)),
124 MK_FLOW_ACTION(SECURITY, sizeof(struct rte_flow_action_security)),
11fdf7f2
TL		 125 MK_FLOW_ACTION(OF_SET_MPLS_TTL,
126 sizeof(struct rte_flow_action_of_set_mpls_ttl)),
127 MK_FLOW_ACTION(OF_DEC_MPLS_TTL, 0),
128 MK_FLOW_ACTION(OF_SET_NW_TTL,
129 sizeof(struct rte_flow_action_of_set_nw_ttl)),
130 MK_FLOW_ACTION(OF_DEC_NW_TTL, 0),
131 MK_FLOW_ACTION(OF_COPY_TTL_OUT, 0),
132 MK_FLOW_ACTION(OF_COPY_TTL_IN, 0),
133 MK_FLOW_ACTION(OF_POP_VLAN, 0),
134 MK_FLOW_ACTION(OF_PUSH_VLAN,
135 sizeof(struct rte_flow_action_of_push_vlan)),
136 MK_FLOW_ACTION(OF_SET_VLAN_VID,
137 sizeof(struct rte_flow_action_of_set_vlan_vid)),
138 MK_FLOW_ACTION(OF_SET_VLAN_PCP,
139 sizeof(struct rte_flow_action_of_set_vlan_pcp)),
140 MK_FLOW_ACTION(OF_POP_MPLS,
141 sizeof(struct rte_flow_action_of_pop_mpls)),
142 MK_FLOW_ACTION(OF_PUSH_MPLS,
143 sizeof(struct rte_flow_action_of_push_mpls)),
9f95a23c
TL		 144 MK_FLOW_ACTION(VXLAN_ENCAP, sizeof(struct rte_flow_action_vxlan_encap)),
145 MK_FLOW_ACTION(VXLAN_DECAP, 0),
146 MK_FLOW_ACTION(NVGRE_ENCAP, sizeof(struct rte_flow_action_vxlan_encap)),
147 MK_FLOW_ACTION(NVGRE_DECAP, 0),
148 MK_FLOW_ACTION(RAW_ENCAP, sizeof(struct rte_flow_action_raw_encap)),
149 MK_FLOW_ACTION(RAW_DECAP, sizeof(struct rte_flow_action_raw_decap)),
150 MK_FLOW_ACTION(SET_IPV4_SRC,
151 sizeof(struct rte_flow_action_set_ipv4)),
152 MK_FLOW_ACTION(SET_IPV4_DST,
153 sizeof(struct rte_flow_action_set_ipv4)),
154 MK_FLOW_ACTION(SET_IPV6_SRC,
155 sizeof(struct rte_flow_action_set_ipv6)),
156 MK_FLOW_ACTION(SET_IPV6_DST,
157 sizeof(struct rte_flow_action_set_ipv6)),
158 MK_FLOW_ACTION(SET_TP_SRC,
159 sizeof(struct rte_flow_action_set_tp)),
160 MK_FLOW_ACTION(SET_TP_DST,
161 sizeof(struct rte_flow_action_set_tp)),
162 MK_FLOW_ACTION(MAC_SWAP, 0),
163 MK_FLOW_ACTION(DEC_TTL, 0),
164 MK_FLOW_ACTION(SET_TTL, sizeof(struct rte_flow_action_set_ttl)),
165 MK_FLOW_ACTION(SET_MAC_SRC, sizeof(struct rte_flow_action_set_mac)),
166 MK_FLOW_ACTION(SET_MAC_DST, sizeof(struct rte_flow_action_set_mac)),
f67539c2
TL		 167 MK_FLOW_ACTION(INC_TCP_SEQ, sizeof(rte_be32_t)),
168 MK_FLOW_ACTION(DEC_TCP_SEQ, sizeof(rte_be32_t)),
169 MK_FLOW_ACTION(INC_TCP_ACK, sizeof(rte_be32_t)),
170 MK_FLOW_ACTION(DEC_TCP_ACK, sizeof(rte_be32_t)),
171 MK_FLOW_ACTION(SET_TAG, sizeof(struct rte_flow_action_set_tag)),
172 MK_FLOW_ACTION(SET_META, sizeof(struct rte_flow_action_set_meta)),
173 MK_FLOW_ACTION(SET_IPV4_DSCP, sizeof(struct rte_flow_action_set_dscp)),
174 MK_FLOW_ACTION(SET_IPV6_DSCP, sizeof(struct rte_flow_action_set_dscp)),
175 MK_FLOW_ACTION(AGE, sizeof(struct rte_flow_action_age)),
11fdf7f2
TL		 176};
177
f67539c2
TL		 178int
179rte_flow_dynf_metadata_register(void)
180{
181 int offset;
182 int flag;
183
184 static const struct rte_mbuf_dynfield desc_offs = {
185 .name = RTE_MBUF_DYNFIELD_METADATA_NAME,
186 .size = sizeof(uint32_t),
187 .align = __alignof__(uint32_t),
188 };
189 static const struct rte_mbuf_dynflag desc_flag = {
190 .name = RTE_MBUF_DYNFLAG_METADATA_NAME,
191 };
192
193 offset = rte_mbuf_dynfield_register(&desc_offs);
194 if (offset < 0)
195 goto error;
196 flag = rte_mbuf_dynflag_register(&desc_flag);
197 if (flag < 0)
198 goto error;
199 rte_flow_dynf_metadata_offs = offset;
200 rte_flow_dynf_metadata_mask = (1ULL << flag);
201 return 0;
202
203error:
204 rte_flow_dynf_metadata_offs = -1;
205 rte_flow_dynf_metadata_mask = 0ULL;
206 return -rte_errno;
207}
208
11fdf7f2
TL		 209static int
210flow_err(uint16_t port_id, int ret, struct rte_flow_error *error)
211{
212 if (ret == 0)
213 return 0;
214 if (rte_eth_dev_is_removed(port_id))
215 return rte_flow_error_set(error, EIO,
216 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
217 NULL, rte_strerror(EIO));
218 return ret;
219}
220
f67539c2
TL		 221static enum rte_flow_item_type
222rte_flow_expand_rss_item_complete(const struct rte_flow_item *item)
223{
224 enum rte_flow_item_type ret = RTE_FLOW_ITEM_TYPE_VOID;
225 uint16_t ether_type = 0;
226 uint16_t ether_type_m;
227 uint8_t ip_next_proto = 0;
228 uint8_t ip_next_proto_m;
229
230 if (item == NULL || item->spec == NULL)
231 return ret;
232 switch (item->type) {
233 case RTE_FLOW_ITEM_TYPE_ETH:
234 if (item->mask)
235 ether_type_m = ((const struct rte_flow_item_eth *)
236 (item->mask))->type;
237 else
238 ether_type_m = rte_flow_item_eth_mask.type;
239 if (ether_type_m != RTE_BE16(0xFFFF))
240 break;
241 ether_type = ((const struct rte_flow_item_eth *)
242 (item->spec))->type;
243 if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV4)
244 ret = RTE_FLOW_ITEM_TYPE_IPV4;
245 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV6)
246 ret = RTE_FLOW_ITEM_TYPE_IPV6;
247 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_VLAN)
248 ret = RTE_FLOW_ITEM_TYPE_VLAN;
249 break;
250 case RTE_FLOW_ITEM_TYPE_VLAN:
251 if (item->mask)
252 ether_type_m = ((const struct rte_flow_item_vlan *)
253 (item->mask))->inner_type;
254 else
255 ether_type_m = rte_flow_item_vlan_mask.inner_type;
256 if (ether_type_m != RTE_BE16(0xFFFF))
257 break;
258 ether_type = ((const struct rte_flow_item_vlan *)
259 (item->spec))->inner_type;
260 if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV4)
261 ret = RTE_FLOW_ITEM_TYPE_IPV4;
262 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV6)
263 ret = RTE_FLOW_ITEM_TYPE_IPV6;
264 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_VLAN)
265 ret = RTE_FLOW_ITEM_TYPE_VLAN;
266 break;
267 case RTE_FLOW_ITEM_TYPE_IPV4:
268 if (item->mask)
269 ip_next_proto_m = ((const struct rte_flow_item_ipv4 *)
270 (item->mask))->hdr.next_proto_id;
271 else
272 ip_next_proto_m =
273 rte_flow_item_ipv4_mask.hdr.next_proto_id;
274 if (ip_next_proto_m != 0xFF)
275 break;
276 ip_next_proto = ((const struct rte_flow_item_ipv4 *)
277 (item->spec))->hdr.next_proto_id;
278 if (ip_next_proto == IPPROTO_UDP)
279 ret = RTE_FLOW_ITEM_TYPE_UDP;
280 else if (ip_next_proto == IPPROTO_TCP)
281 ret = RTE_FLOW_ITEM_TYPE_TCP;
282 else if (ip_next_proto == IPPROTO_IP)
283 ret = RTE_FLOW_ITEM_TYPE_IPV4;
284 else if (ip_next_proto == IPPROTO_IPV6)
285 ret = RTE_FLOW_ITEM_TYPE_IPV6;
286 break;
287 case RTE_FLOW_ITEM_TYPE_IPV6:
288 if (item->mask)
289 ip_next_proto_m = ((const struct rte_flow_item_ipv6 *)
290 (item->mask))->hdr.proto;
291 else
292 ip_next_proto_m =
293 rte_flow_item_ipv6_mask.hdr.proto;
294 if (ip_next_proto_m != 0xFF)
295 break;
296 ip_next_proto = ((const struct rte_flow_item_ipv6 *)
297 (item->spec))->hdr.proto;
298 if (ip_next_proto == IPPROTO_UDP)
299 ret = RTE_FLOW_ITEM_TYPE_UDP;
300 else if (ip_next_proto == IPPROTO_TCP)
301 ret = RTE_FLOW_ITEM_TYPE_TCP;
302 else if (ip_next_proto == IPPROTO_IP)
303 ret = RTE_FLOW_ITEM_TYPE_IPV4;
304 else if (ip_next_proto == IPPROTO_IPV6)
305 ret = RTE_FLOW_ITEM_TYPE_IPV6;
306 break;
307 default:
308 ret = RTE_FLOW_ITEM_TYPE_VOID;
309 break;
310 }
311 return ret;
312}
313
11fdf7f2
TL		 314/* Get generic flow operations structure from a port. */
315const struct rte_flow_ops *
316rte_flow_ops_get(uint16_t port_id, struct rte_flow_error *error)
317{
318 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
319 const struct rte_flow_ops *ops;
320 int code;
321
322 if (unlikely(!rte_eth_dev_is_valid_port(port_id)))
323 code = ENODEV;
324 else if (unlikely(!dev->dev_ops->filter_ctrl ||
325 dev->dev_ops->filter_ctrl(dev,
326 RTE_ETH_FILTER_GENERIC,
327 RTE_ETH_FILTER_GET,
328 &ops) ||
329 !ops))
330 code = ENOSYS;
331 else
332 return ops;
333 rte_flow_error_set(error, code, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
334 NULL, rte_strerror(code));
335 return NULL;
336}
337
338/* Check whether a flow rule can be created on a given port. */
339int
340rte_flow_validate(uint16_t port_id,
341 const struct rte_flow_attr *attr,
342 const struct rte_flow_item pattern[],
343 const struct rte_flow_action actions[],
344 struct rte_flow_error *error)
345{
346 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
347 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
348
349 if (unlikely(!ops))
350 return -rte_errno;
351 if (likely(!!ops->validate))
352 return flow_err(port_id, ops->validate(dev, attr, pattern,
353 actions, error), error);
354 return rte_flow_error_set(error, ENOSYS,
355 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
356 NULL, rte_strerror(ENOSYS));
357}
358
359/* Create a flow rule on a given port. */
360struct rte_flow *
361rte_flow_create(uint16_t port_id,
362 const struct rte_flow_attr *attr,
363 const struct rte_flow_item pattern[],
364 const struct rte_flow_action actions[],
365 struct rte_flow_error *error)
366{
367 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
368 struct rte_flow *flow;
369 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
370
371 if (unlikely(!ops))
372 return NULL;
373 if (likely(!!ops->create)) {
374 flow = ops->create(dev, attr, pattern, actions, error);
375 if (flow == NULL)
376 flow_err(port_id, -rte_errno, error);
377 return flow;
378 }
379 rte_flow_error_set(error, ENOSYS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
380 NULL, rte_strerror(ENOSYS));
381 return NULL;
382}
383
384/* Destroy a flow rule on a given port. */
385int
386rte_flow_destroy(uint16_t port_id,
387 struct rte_flow *flow,
388 struct rte_flow_error *error)
389{
390 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
391 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
392
393 if (unlikely(!ops))
394 return -rte_errno;
395 if (likely(!!ops->destroy))
396 return flow_err(port_id, ops->destroy(dev, flow, error),
397 error);
398 return rte_flow_error_set(error, ENOSYS,
399 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
400 NULL, rte_strerror(ENOSYS));
401}
402
403/* Destroy all flow rules associated with a port. */
404int
405rte_flow_flush(uint16_t port_id,
406 struct rte_flow_error *error)
407{
408 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
409 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
410
411 if (unlikely(!ops))
412 return -rte_errno;
413 if (likely(!!ops->flush))
414 return flow_err(port_id, ops->flush(dev, error), error);
415 return rte_flow_error_set(error, ENOSYS,
416 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
417 NULL, rte_strerror(ENOSYS));
418}
419
420/* Query an existing flow rule. */
421int
422rte_flow_query(uint16_t port_id,
423 struct rte_flow *flow,
424 const struct rte_flow_action *action,
425 void *data,
426 struct rte_flow_error *error)
427{
428 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
429 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
430
431 if (!ops)
432 return -rte_errno;
433 if (likely(!!ops->query))
434 return flow_err(port_id, ops->query(dev, flow, action, data,
435 error), error);
436 return rte_flow_error_set(error, ENOSYS,
437 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
438 NULL, rte_strerror(ENOSYS));
439}
440
441/* Restrict ingress traffic to the defined flow rules. */
442int
443rte_flow_isolate(uint16_t port_id,
444 int set,
445 struct rte_flow_error *error)
446{
447 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
448 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
449
450 if (!ops)
451 return -rte_errno;
452 if (likely(!!ops->isolate))
453 return flow_err(port_id, ops->isolate(dev, set, error), error);
454 return rte_flow_error_set(error, ENOSYS,
455 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
456 NULL, rte_strerror(ENOSYS));
457}
458
459/* Initialize flow error structure. */
460int
461rte_flow_error_set(struct rte_flow_error *error,
462 int code,
463 enum rte_flow_error_type type,
464 const void *cause,
465 const char *message)
466{
467 if (error) {
468 *error = (struct rte_flow_error){
469 .type = type,
470 .cause = cause,
471 .message = message,
472 };
473 }
474 rte_errno = code;
475 return -code;
476}
477
478/** Pattern item specification types. */
9f95a23c
TL		 479enum rte_flow_conv_item_spec_type {
480 RTE_FLOW_CONV_ITEM_SPEC,
481 RTE_FLOW_CONV_ITEM_LAST,
482 RTE_FLOW_CONV_ITEM_MASK,
11fdf7f2
TL		 483};
484
9f95a23c
TL		 485/**
486 * Copy pattern item specification.
487 *
488 * @param[out] buf
489 * Output buffer. Can be NULL if @p size is zero.
490 * @param size
491 * Size of @p buf in bytes.
492 * @param[in] item
493 * Pattern item to copy specification from.
494 * @param type
495 * Specification selector for either @p spec, @p last or @p mask.
496 *
497 * @return
498 * Number of bytes needed to store pattern item specification regardless
499 * of @p size. @p buf contents are truncated to @p size if not large
500 * enough.
501 */
11fdf7f2 502static size_t
9f95a23c
TL		 503rte_flow_conv_item_spec(void *buf, const size_t size,
504 const struct rte_flow_item *item,
505 enum rte_flow_conv_item_spec_type type)
11fdf7f2 506{
9f95a23c 507 size_t off;
11fdf7f2 508 const void *data =
9f95a23c
TL		 509 type == RTE_FLOW_CONV_ITEM_SPEC ? item->spec :
510 type == RTE_FLOW_CONV_ITEM_LAST ? item->last :
511 type == RTE_FLOW_CONV_ITEM_MASK ? item->mask :
11fdf7f2
TL		 512 NULL;
513
11fdf7f2
TL		 514 switch (item->type) {
515 union {
516 const struct rte_flow_item_raw *raw;
517 } spec;
518 union {
519 const struct rte_flow_item_raw *raw;
520 } last;
521 union {
522 const struct rte_flow_item_raw *raw;
523 } mask;
524 union {
525 const struct rte_flow_item_raw *raw;
526 } src;
527 union {
528 struct rte_flow_item_raw *raw;
529 } dst;
9f95a23c 530 size_t tmp;
11fdf7f2
TL		 531
532 case RTE_FLOW_ITEM_TYPE_RAW:
533 spec.raw = item->spec;
534 last.raw = item->last ? item->last : item->spec;
535 mask.raw = item->mask ? item->mask : &rte_flow_item_raw_mask;
536 src.raw = data;
537 dst.raw = buf;
9f95a23c
TL		 538 rte_memcpy(dst.raw,
539 (&(struct rte_flow_item_raw){
540 .relative = src.raw->relative,
541 .search = src.raw->search,
542 .reserved = src.raw->reserved,
543 .offset = src.raw->offset,
544 .limit = src.raw->limit,
545 .length = src.raw->length,
546 }),
547 size > sizeof(*dst.raw) ? sizeof(*dst.raw) : size);
548 off = sizeof(*dst.raw);
549 if (type == RTE_FLOW_CONV_ITEM_SPEC ||
550 (type == RTE_FLOW_CONV_ITEM_MASK &&
11fdf7f2
TL		 551 ((spec.raw->length & mask.raw->length) >=
552 (last.raw->length & mask.raw->length))))
9f95a23c 553 tmp = spec.raw->length & mask.raw->length;
11fdf7f2 554 else
9f95a23c
TL		 555 tmp = last.raw->length & mask.raw->length;
556 if (tmp) {
557 off = RTE_ALIGN_CEIL(off, sizeof(*dst.raw->pattern));
558 if (size >= off + tmp)
559 dst.raw->pattern = rte_memcpy
560 ((void *)((uintptr_t)dst.raw + off),
561 src.raw->pattern, tmp);
562 off += tmp;
11fdf7f2
TL		 563 }
564 break;
565 default:
9f95a23c
TL		 566 off = rte_flow_desc_item[item->type].size;
567 rte_memcpy(buf, data, (size > off ? off : size));
11fdf7f2
TL		 568 break;
569 }
9f95a23c 570 return off;
11fdf7f2
TL		 571}
572
9f95a23c
TL		 573/**
574 * Copy action configuration.
575 *
576 * @param[out] buf
577 * Output buffer. Can be NULL if @p size is zero.
578 * @param size
579 * Size of @p buf in bytes.
580 * @param[in] action
581 * Action to copy configuration from.
582 *
583 * @return
584 * Number of bytes needed to store pattern item specification regardless
585 * of @p size. @p buf contents are truncated to @p size if not large
586 * enough.
587 */
11fdf7f2 588static size_t
9f95a23c
TL		 589rte_flow_conv_action_conf(void *buf, const size_t size,
590 const struct rte_flow_action *action)
11fdf7f2 591{
9f95a23c 592 size_t off;
11fdf7f2 593
11fdf7f2
TL		 594 switch (action->type) {
595 union {
596 const struct rte_flow_action_rss *rss;
9f95a23c
TL		 597 const struct rte_flow_action_vxlan_encap *vxlan_encap;
598 const struct rte_flow_action_nvgre_encap *nvgre_encap;
11fdf7f2
TL		 599 } src;
600 union {
601 struct rte_flow_action_rss *rss;
9f95a23c
TL		 602 struct rte_flow_action_vxlan_encap *vxlan_encap;
603 struct rte_flow_action_nvgre_encap *nvgre_encap;
11fdf7f2 604 } dst;
9f95a23c
TL		 605 size_t tmp;
606 int ret;
11fdf7f2
TL		 607
608 case RTE_FLOW_ACTION_TYPE_RSS:
609 src.rss = action->conf;
610 dst.rss = buf;
9f95a23c
TL		 611 rte_memcpy(dst.rss,
612 (&(struct rte_flow_action_rss){
11fdf7f2
TL		 613 .func = src.rss->func,
614 .level = src.rss->level,
615 .types = src.rss->types,
616 .key_len = src.rss->key_len,
617 .queue_num = src.rss->queue_num,
9f95a23c
TL		 618 }),
619 size > sizeof(*dst.rss) ? sizeof(*dst.rss) : size);
620 off = sizeof(*dst.rss);
11fdf7f2 621 if (src.rss->key_len) {
9f95a23c
TL		 622 off = RTE_ALIGN_CEIL(off, sizeof(*dst.rss->key));
623 tmp = sizeof(*src.rss->key) * src.rss->key_len;
624 if (size >= off + tmp)
625 dst.rss->key = rte_memcpy
11fdf7f2 626 ((void *)((uintptr_t)dst.rss + off),
9f95a23c
TL		 627 src.rss->key, tmp);
628 off += tmp;
11fdf7f2
TL		 629 }
630 if (src.rss->queue_num) {
9f95a23c
TL		 631 off = RTE_ALIGN_CEIL(off, sizeof(*dst.rss->queue));
632 tmp = sizeof(*src.rss->queue) * src.rss->queue_num;
633 if (size >= off + tmp)
634 dst.rss->queue = rte_memcpy
11fdf7f2 635 ((void *)((uintptr_t)dst.rss + off),
9f95a23c
TL		 636 src.rss->queue, tmp);
637 off += tmp;
638 }
639 break;
640 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
641 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
642 src.vxlan_encap = action->conf;
643 dst.vxlan_encap = buf;
644 RTE_BUILD_BUG_ON(sizeof(*src.vxlan_encap) !=
645 sizeof(*src.nvgre_encap) ||
646 offsetof(struct rte_flow_action_vxlan_encap,
647 definition) !=
648 offsetof(struct rte_flow_action_nvgre_encap,
649 definition));
650 off = sizeof(*dst.vxlan_encap);
651 if (src.vxlan_encap->definition) {
652 off = RTE_ALIGN_CEIL
653 (off, sizeof(*dst.vxlan_encap->definition));
654 ret = rte_flow_conv
655 (RTE_FLOW_CONV_OP_PATTERN,
656 (void *)((uintptr_t)dst.vxlan_encap + off),
657 size > off ? size - off : 0,
658 src.vxlan_encap->definition, NULL);
659 if (ret < 0)
660 return 0;
661 if (size >= off + ret)
662 dst.vxlan_encap->definition =
663 (void *)((uintptr_t)dst.vxlan_encap +
664 off);
665 off += ret;
11fdf7f2 666 }
11fdf7f2
TL		 667 break;
668 default:
9f95a23c
TL		 669 off = rte_flow_desc_action[action->type].size;
670 rte_memcpy(buf, action->conf, (size > off ? off : size));
11fdf7f2
TL		 671 break;
672 }
9f95a23c
TL		 673 return off;
674}
675
676/**
677 * Copy a list of pattern items.
678 *
679 * @param[out] dst
680 * Destination buffer. Can be NULL if @p size is zero.
681 * @param size
682 * Size of @p dst in bytes.
683 * @param[in] src
684 * Source pattern items.
685 * @param num
686 * Maximum number of pattern items to process from @p src or 0 to process
687 * the entire list. In both cases, processing stops after
688 * RTE_FLOW_ITEM_TYPE_END is encountered.
689 * @param[out] error
690 * Perform verbose error reporting if not NULL.
691 *
692 * @return
693 * A positive value representing the number of bytes needed to store
694 * pattern items regardless of @p size on success (@p buf contents are
695 * truncated to @p size if not large enough), a negative errno value
696 * otherwise and rte_errno is set.
697 */
698static int
699rte_flow_conv_pattern(struct rte_flow_item *dst,
700 const size_t size,
701 const struct rte_flow_item *src,
702 unsigned int num,
703 struct rte_flow_error *error)
704{
705 uintptr_t data = (uintptr_t)dst;
706 size_t off;
707 size_t ret;
708 unsigned int i;
709
710 for (i = 0, off = 0; !num || i != num; ++i, ++src, ++dst) {
711 if ((size_t)src->type >= RTE_DIM(rte_flow_desc_item) ||
712 !rte_flow_desc_item[src->type].name)
713 return rte_flow_error_set
714 (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, src,
715 "cannot convert unknown item type");
716 if (size >= off + sizeof(*dst))
717 *dst = (struct rte_flow_item){
718 .type = src->type,
719 };
720 off += sizeof(*dst);
721 if (!src->type)
722 num = i + 1;
723 }
724 num = i;
725 src -= num;
726 dst -= num;
727 do {
728 if (src->spec) {
729 off = RTE_ALIGN_CEIL(off, sizeof(double));
730 ret = rte_flow_conv_item_spec
731 ((void *)(data + off),
732 size > off ? size - off : 0, src,
733 RTE_FLOW_CONV_ITEM_SPEC);
734 if (size && size >= off + ret)
735 dst->spec = (void *)(data + off);
736 off += ret;
737
738 }
739 if (src->last) {
740 off = RTE_ALIGN_CEIL(off, sizeof(double));
741 ret = rte_flow_conv_item_spec
742 ((void *)(data + off),
743 size > off ? size - off : 0, src,
744 RTE_FLOW_CONV_ITEM_LAST);
745 if (size && size >= off + ret)
746 dst->last = (void *)(data + off);
747 off += ret;
748 }
749 if (src->mask) {
750 off = RTE_ALIGN_CEIL(off, sizeof(double));
751 ret = rte_flow_conv_item_spec
752 ((void *)(data + off),
753 size > off ? size - off : 0, src,
754 RTE_FLOW_CONV_ITEM_MASK);
755 if (size && size >= off + ret)
756 dst->mask = (void *)(data + off);
757 off += ret;
758 }
759 ++src;
760 ++dst;
761 } while (--num);
762 return off;
763}
764
765/**
766 * Copy a list of actions.
767 *
768 * @param[out] dst
769 * Destination buffer. Can be NULL if @p size is zero.
770 * @param size
771 * Size of @p dst in bytes.
772 * @param[in] src
773 * Source actions.
774 * @param num
775 * Maximum number of actions to process from @p src or 0 to process the
776 * entire list. In both cases, processing stops after
777 * RTE_FLOW_ACTION_TYPE_END is encountered.
778 * @param[out] error
779 * Perform verbose error reporting if not NULL.
780 *
781 * @return
782 * A positive value representing the number of bytes needed to store
783 * actions regardless of @p size on success (@p buf contents are truncated
784 * to @p size if not large enough), a negative errno value otherwise and
785 * rte_errno is set.
786 */
787static int
788rte_flow_conv_actions(struct rte_flow_action *dst,
789 const size_t size,
790 const struct rte_flow_action *src,
791 unsigned int num,
792 struct rte_flow_error *error)
793{
794 uintptr_t data = (uintptr_t)dst;
795 size_t off;
796 size_t ret;
797 unsigned int i;
798
799 for (i = 0, off = 0; !num || i != num; ++i, ++src, ++dst) {
800 if ((size_t)src->type >= RTE_DIM(rte_flow_desc_action) ||
801 !rte_flow_desc_action[src->type].name)
802 return rte_flow_error_set
803 (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
804 src, "cannot convert unknown action type");
805 if (size >= off + sizeof(*dst))
806 *dst = (struct rte_flow_action){
807 .type = src->type,
808 };
809 off += sizeof(*dst);
810 if (!src->type)
811 num = i + 1;
812 }
813 num = i;
814 src -= num;
815 dst -= num;
816 do {
817 if (src->conf) {
818 off = RTE_ALIGN_CEIL(off, sizeof(double));
819 ret = rte_flow_conv_action_conf
820 ((void *)(data + off),
821 size > off ? size - off : 0, src);
822 if (size && size >= off + ret)
823 dst->conf = (void *)(data + off);
824 off += ret;
825 }
826 ++src;
827 ++dst;
828 } while (--num);
829 return off;
830}
831
832/**
833 * Copy flow rule components.
834 *
835 * This comprises the flow rule descriptor itself, attributes, pattern and
836 * actions list. NULL components in @p src are skipped.
837 *
838 * @param[out] dst
839 * Destination buffer. Can be NULL if @p size is zero.
840 * @param size
841 * Size of @p dst in bytes.
842 * @param[in] src
843 * Source flow rule descriptor.
844 * @param[out] error
845 * Perform verbose error reporting if not NULL.
846 *
847 * @return
848 * A positive value representing the number of bytes needed to store all
849 * components including the descriptor regardless of @p size on success
850 * (@p buf contents are truncated to @p size if not large enough), a
851 * negative errno value otherwise and rte_errno is set.
852 */
853static int
854rte_flow_conv_rule(struct rte_flow_conv_rule *dst,
855 const size_t size,
856 const struct rte_flow_conv_rule *src,
857 struct rte_flow_error *error)
858{
859 size_t off;
860 int ret;
861
862 rte_memcpy(dst,
863 (&(struct rte_flow_conv_rule){
864 .attr = NULL,
865 .pattern = NULL,
866 .actions = NULL,
867 }),
868 size > sizeof(*dst) ? sizeof(*dst) : size);
869 off = sizeof(*dst);
870 if (src->attr_ro) {
871 off = RTE_ALIGN_CEIL(off, sizeof(double));
872 if (size && size >= off + sizeof(*dst->attr))
873 dst->attr = rte_memcpy
874 ((void *)((uintptr_t)dst + off),
875 src->attr_ro, sizeof(*dst->attr));
876 off += sizeof(*dst->attr);
877 }
878 if (src->pattern_ro) {
879 off = RTE_ALIGN_CEIL(off, sizeof(double));
880 ret = rte_flow_conv_pattern((void *)((uintptr_t)dst + off),
881 size > off ? size - off : 0,
882 src->pattern_ro, 0, error);
883 if (ret < 0)
884 return ret;
885 if (size && size >= off + (size_t)ret)
886 dst->pattern = (void *)((uintptr_t)dst + off);
887 off += ret;
888 }
889 if (src->actions_ro) {
890 off = RTE_ALIGN_CEIL(off, sizeof(double));
891 ret = rte_flow_conv_actions((void *)((uintptr_t)dst + off),
892 size > off ? size - off : 0,
893 src->actions_ro, 0, error);
894 if (ret < 0)
895 return ret;
896 if (size >= off + (size_t)ret)
897 dst->actions = (void *)((uintptr_t)dst + off);
898 off += ret;
899 }
900 return off;
901}
902
903/**
904 * Retrieve the name of a pattern item/action type.
905 *
906 * @param is_action
907 * Nonzero when @p src represents an action type instead of a pattern item
908 * type.
909 * @param is_ptr
910 * Nonzero to write string address instead of contents into @p dst.
911 * @param[out] dst
912 * Destination buffer. Can be NULL if @p size is zero.
913 * @param size
914 * Size of @p dst in bytes.
915 * @param[in] src
916 * Depending on @p is_action, source pattern item or action type cast as a
917 * pointer.
918 * @param[out] error
919 * Perform verbose error reporting if not NULL.
920 *
921 * @return
922 * A positive value representing the number of bytes needed to store the
923 * name or its address regardless of @p size on success (@p buf contents
924 * are truncated to @p size if not large enough), a negative errno value
925 * otherwise and rte_errno is set.
926 */
927static int
928rte_flow_conv_name(int is_action,
929 int is_ptr,
930 char *dst,
931 const size_t size,
932 const void *src,
933 struct rte_flow_error *error)
934{
935 struct desc_info {
936 const struct rte_flow_desc_data *data;
937 size_t num;
938 };
939 static const struct desc_info info_rep[2] = {
940 { rte_flow_desc_item, RTE_DIM(rte_flow_desc_item), },
941 { rte_flow_desc_action, RTE_DIM(rte_flow_desc_action), },
942 };
943 const struct desc_info *const info = &info_rep[!!is_action];
944 unsigned int type = (uintptr_t)src;
945
946 if (type >= info->num)
947 return rte_flow_error_set
948 (error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
949 "unknown object type to retrieve the name of");
950 if (!is_ptr)
951 return strlcpy(dst, info->data[type].name, size);
952 if (size >= sizeof(const char **))
953 *((const char **)dst) = info->data[type].name;
954 return sizeof(const char **);
955}
956
957/** Helper function to convert flow API objects. */
958int
959rte_flow_conv(enum rte_flow_conv_op op,
960 void *dst,
961 size_t size,
962 const void *src,
963 struct rte_flow_error *error)
964{
965 switch (op) {
966 const struct rte_flow_attr *attr;
967
968 case RTE_FLOW_CONV_OP_NONE:
969 return 0;
970 case RTE_FLOW_CONV_OP_ATTR:
971 attr = src;
972 if (size > sizeof(*attr))
973 size = sizeof(*attr);
974 rte_memcpy(dst, attr, size);
975 return sizeof(*attr);
976 case RTE_FLOW_CONV_OP_ITEM:
977 return rte_flow_conv_pattern(dst, size, src, 1, error);
978 case RTE_FLOW_CONV_OP_ACTION:
979 return rte_flow_conv_actions(dst, size, src, 1, error);
980 case RTE_FLOW_CONV_OP_PATTERN:
981 return rte_flow_conv_pattern(dst, size, src, 0, error);
982 case RTE_FLOW_CONV_OP_ACTIONS:
983 return rte_flow_conv_actions(dst, size, src, 0, error);
984 case RTE_FLOW_CONV_OP_RULE:
985 return rte_flow_conv_rule(dst, size, src, error);
986 case RTE_FLOW_CONV_OP_ITEM_NAME:
987 return rte_flow_conv_name(0, 0, dst, size, src, error);
988 case RTE_FLOW_CONV_OP_ACTION_NAME:
989 return rte_flow_conv_name(1, 0, dst, size, src, error);
990 case RTE_FLOW_CONV_OP_ITEM_NAME_PTR:
991 return rte_flow_conv_name(0, 1, dst, size, src, error);
992 case RTE_FLOW_CONV_OP_ACTION_NAME_PTR:
993 return rte_flow_conv_name(1, 1, dst, size, src, error);
994 }
995 return rte_flow_error_set
996 (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
997 "unknown object conversion operation");
11fdf7f2
TL		 998}
999
1000/** Store a full rte_flow description. */
1001size_t
1002rte_flow_copy(struct rte_flow_desc *desc, size_t len,
1003 const struct rte_flow_attr *attr,
1004 const struct rte_flow_item *items,
1005 const struct rte_flow_action *actions)
1006{
9f95a23c
TL		 1007 /*
1008 * Overlap struct rte_flow_conv with struct rte_flow_desc in order
1009 * to convert the former to the latter without wasting space.
1010 */
1011 struct rte_flow_conv_rule *dst =
1012 len ?
1013 (void *)((uintptr_t)desc +
1014 (offsetof(struct rte_flow_desc, actions) -
1015 offsetof(struct rte_flow_conv_rule, actions))) :
1016 NULL;
1017 size_t dst_size =
1018 len > sizeof(*desc) - sizeof(*dst) ?
1019 len - (sizeof(*desc) - sizeof(*dst)) :
1020 0;
1021 struct rte_flow_conv_rule src = {
1022 .attr_ro = NULL,
1023 .pattern_ro = items,
1024 .actions_ro = actions,
1025 };
1026 int ret;
1027
1028 RTE_BUILD_BUG_ON(sizeof(struct rte_flow_desc) <
1029 sizeof(struct rte_flow_conv_rule));
1030 if (dst_size &&
1031 (&dst->pattern != &desc->items ||
1032 &dst->actions != &desc->actions ||
1033 (uintptr_t)(dst + 1) != (uintptr_t)(desc + 1))) {
1034 rte_errno = EINVAL;
1035 return 0;
11fdf7f2 1036 }
9f95a23c
TL		 1037 ret = rte_flow_conv(RTE_FLOW_CONV_OP_RULE, dst, dst_size, &src, NULL);
1038 if (ret < 0)
1039 return 0;
1040 ret += sizeof(*desc) - sizeof(*dst);
1041 rte_memcpy(desc,
1042 (&(struct rte_flow_desc){
1043 .size = ret,
11fdf7f2 1044 .attr = *attr,
9f95a23c
TL		 1045 .items = dst_size ? dst->pattern : NULL,
1046 .actions = dst_size ? dst->actions : NULL,
1047 }),
1048 len > sizeof(*desc) ? sizeof(*desc) : len);
1049 return ret;
11fdf7f2
TL		 1050}
1051
1052/**
1053 * Expand RSS flows into several possible flows according to the RSS hash
1054 * fields requested and the driver capabilities.
1055 */
f67539c2 1056int
11fdf7f2
TL		 1057rte_flow_expand_rss(struct rte_flow_expand_rss *buf, size_t size,
1058 const struct rte_flow_item *pattern, uint64_t types,
1059 const struct rte_flow_expand_node graph[],
1060 int graph_root_index)
1061{
1062 const int elt_n = 8;
1063 const struct rte_flow_item *item;
1064 const struct rte_flow_expand_node *node = &graph[graph_root_index];
1065 const int *next_node;
1066 const int *stack[elt_n];
1067 int stack_pos = 0;
1068 struct rte_flow_item flow_items[elt_n];
1069 unsigned int i;
1070 size_t lsize;
1071 size_t user_pattern_size = 0;
1072 void *addr = NULL;
f67539c2
TL		 1073 const struct rte_flow_expand_node *next = NULL;
1074 struct rte_flow_item missed_item;
1075 int missed = 0;
1076 int elt = 0;
1077 const struct rte_flow_item *last_item = NULL;
11fdf7f2 1078
f67539c2 1079 memset(&missed_item, 0, sizeof(missed_item));
11fdf7f2
TL		 1080 lsize = offsetof(struct rte_flow_expand_rss, entry) +
1081 elt_n * sizeof(buf->entry[0]);
1082 if (lsize <= size) {
1083 buf->entry[0].priority = 0;
1084 buf->entry[0].pattern = (void *)&buf->entry[elt_n];
1085 buf->entries = 0;
1086 addr = buf->entry[0].pattern;
1087 }
1088 for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
f67539c2
TL		 1089 if (item->type != RTE_FLOW_ITEM_TYPE_VOID)
1090 last_item = item;
11fdf7f2
TL		 1091 for (i = 0; node->next && node->next[i]; ++i) {
1092 next = &graph[node->next[i]];
1093 if (next->type == item->type)
1094 break;
1095 }
1096 if (next)
1097 node = next;
1098 user_pattern_size += sizeof(*item);
1099 }
1100 user_pattern_size += sizeof(*item); /* Handle END item. */
1101 lsize += user_pattern_size;
1102 /* Copy the user pattern in the first entry of the buffer. */
1103 if (lsize <= size) {
1104 rte_memcpy(addr, pattern, user_pattern_size);
1105 addr = (void *)(((uintptr_t)addr) + user_pattern_size);
1106 buf->entries = 1;
1107 }
1108 /* Start expanding. */
1109 memset(flow_items, 0, sizeof(flow_items));
1110 user_pattern_size -= sizeof(*item);
f67539c2
TL		 1111 /*
1112 * Check if the last valid item has spec set
1113 * and need complete pattern.
1114 */
1115 missed_item.type = rte_flow_expand_rss_item_complete(last_item);
1116 if (missed_item.type != RTE_FLOW_ITEM_TYPE_VOID) {
1117 next = NULL;
1118 missed = 1;
1119 for (i = 0; node->next && node->next[i]; ++i) {
1120 next = &graph[node->next[i]];
1121 if (next->type == missed_item.type) {
1122 flow_items[0].type = missed_item.type;
1123 flow_items[1].type = RTE_FLOW_ITEM_TYPE_END;
1124 break;
1125 }
1126 next = NULL;
1127 }
1128 }
1129 if (next && missed) {
1130 elt = 2; /* missed item + item end. */
1131 node = next;
1132 lsize += elt * sizeof(*item) + user_pattern_size;
1133 if ((node->rss_types & types) && lsize <= size) {
1134 buf->entry[buf->entries].priority = 1;
1135 buf->entry[buf->entries].pattern = addr;
1136 buf->entries++;
1137 rte_memcpy(addr, buf->entry[0].pattern,
1138 user_pattern_size);
1139 addr = (void *)(((uintptr_t)addr) + user_pattern_size);
1140 rte_memcpy(addr, flow_items, elt * sizeof(*item));
1141 addr = (void *)(((uintptr_t)addr) +
1142 elt * sizeof(*item));
1143 }
1144 }
1145 memset(flow_items, 0, sizeof(flow_items));
11fdf7f2
TL		 1146 next_node = node->next;
1147 stack[stack_pos] = next_node;
1148 node = next_node ? &graph[*next_node] : NULL;
1149 while (node) {
1150 flow_items[stack_pos].type = node->type;
1151 if (node->rss_types & types) {
1152 /*
1153 * compute the number of items to copy from the
1154 * expansion and copy it.
1155 * When the stack_pos is 0, there are 1 element in it,
1156 * plus the addition END item.
1157 */
f67539c2 1158 elt = stack_pos + 2;
11fdf7f2
TL		 1159 flow_items[stack_pos + 1].type = RTE_FLOW_ITEM_TYPE_END;
1160 lsize += elt * sizeof(*item) + user_pattern_size;
1161 if (lsize <= size) {
1162 size_t n = elt * sizeof(*item);
1163
1164 buf->entry[buf->entries].priority =
f67539c2 1165 stack_pos + 1 + missed;
11fdf7f2
TL		 1166 buf->entry[buf->entries].pattern = addr;
1167 buf->entries++;
1168 rte_memcpy(addr, buf->entry[0].pattern,
1169 user_pattern_size);
1170 addr = (void *)(((uintptr_t)addr) +
1171 user_pattern_size);
f67539c2
TL		 1172 rte_memcpy(addr, &missed_item,
1173 missed * sizeof(*item));
1174 addr = (void *)(((uintptr_t)addr) +
1175 missed * sizeof(*item));
11fdf7f2
TL		 1176 rte_memcpy(addr, flow_items, n);
1177 addr = (void *)(((uintptr_t)addr) + n);
1178 }
1179 }
1180 /* Go deeper. */
1181 if (node->next) {
1182 next_node = node->next;
1183 if (stack_pos++ == elt_n) {
1184 rte_errno = E2BIG;
1185 return -rte_errno;
1186 }
1187 stack[stack_pos] = next_node;
1188 } else if (*(next_node + 1)) {
1189 /* Follow up with the next possibility. */
1190 ++next_node;
1191 } else {
1192 /* Move to the next path. */
1193 if (stack_pos)
1194 next_node = stack[--stack_pos];
1195 next_node++;
1196 stack[stack_pos] = next_node;
1197 }
1198 node = *next_node ? &graph[*next_node] : NULL;
1199 };
f67539c2
TL		 1200 /* no expanded flows but we have missed item, create one rule for it */
1201 if (buf->entries == 1 && missed != 0) {
1202 elt = 2;
1203 lsize += elt * sizeof(*item) + user_pattern_size;
1204 if (lsize <= size) {
1205 buf->entry[buf->entries].priority = 1;
1206 buf->entry[buf->entries].pattern = addr;
1207 buf->entries++;
1208 flow_items[0].type = missed_item.type;
1209 flow_items[1].type = RTE_FLOW_ITEM_TYPE_END;
1210 rte_memcpy(addr, buf->entry[0].pattern,
1211 user_pattern_size);
1212 addr = (void *)(((uintptr_t)addr) + user_pattern_size);
1213 rte_memcpy(addr, flow_items, elt * sizeof(*item));
1214 addr = (void *)(((uintptr_t)addr) +
1215 elt * sizeof(*item));
1216 }
1217 }
11fdf7f2
TL		 1218 return lsize;
1219}
f67539c2
TL		 1220
1221int
1222rte_flow_dev_dump(uint16_t port_id, FILE *file, struct rte_flow_error *error)
1223{
1224 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
1225 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
1226
1227 if (unlikely(!ops))
1228 return -rte_errno;
1229 if (likely(!!ops->dev_dump))
1230 return flow_err(port_id, ops->dev_dump(dev, file, error),
1231 error);
1232 return rte_flow_error_set(error, ENOSYS,
1233 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1234 NULL, rte_strerror(ENOSYS));
1235}
1236
1237int
1238rte_flow_get_aged_flows(uint16_t port_id, void **contexts,
1239 uint32_t nb_contexts, struct rte_flow_error *error)
1240{
1241 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
1242 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
1243
1244 if (unlikely(!ops))
1245 return -rte_errno;
1246 if (likely(!!ops->get_aged_flows))
1247 return flow_err(port_id, ops->get_aged_flows(dev, contexts,
1248 nb_contexts, error), error);
1249 return rte_flow_error_set(error, ENOTSUP,
1250 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1251 NULL, rte_strerror(ENOTSUP));
1252}
Ceph