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1 | /* | |
2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc. | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #ifndef DPBUF_H | |
18 | #define DPBUF_H 1 | |
19 | ||
20 | #include <stddef.h> | |
21 | #include <stdint.h> | |
22 | ||
23 | #ifdef DPDK_NETDEV | |
24 | #include <rte_config.h> | |
25 | #include <rte_mbuf.h> | |
26 | #endif | |
27 | ||
28 | #include "netdev-afxdp.h" | |
29 | #include "netdev-dpdk.h" | |
30 | #include "openvswitch/list.h" | |
31 | #include "packets.h" | |
32 | #include "util.h" | |
33 | #include "flow.h" | |
34 | ||
35 | #ifdef __cplusplus | |
36 | extern "C" { | |
37 | #endif | |
38 | ||
39 | enum OVS_PACKED_ENUM dp_packet_source { | |
40 | DPBUF_MALLOC, /* Obtained via malloc(). */ | |
41 | DPBUF_STACK, /* Un-movable stack space or static buffer. */ | |
42 | DPBUF_STUB, /* Starts on stack, may expand into heap. */ | |
43 | DPBUF_DPDK, /* buffer data is from DPDK allocated memory. | |
44 | * ref to dp_packet_init_dpdk() in dp-packet.c. | |
45 | */ | |
46 | DPBUF_AFXDP, /* Buffer data from XDP frame. */ | |
47 | }; | |
48 | ||
49 | #define DP_PACKET_CONTEXT_SIZE 64 | |
50 | ||
51 | #ifdef DPDK_NETDEV | |
52 | #define DEF_OL_FLAG(NAME, DPDK_DEF, GENERIC_DEF) NAME = DPDK_DEF | |
53 | #else | |
54 | #define DEF_OL_FLAG(NAME, DPDK_DEF, GENERIC_DEF) NAME = GENERIC_DEF | |
55 | #endif | |
56 | ||
57 | /* Bit masks for the 'ol_flags' member of the 'dp_packet' structure. */ | |
58 | enum dp_packet_offload_mask { | |
59 | /* Value 0 is not used. */ | |
60 | /* Is the 'rss_hash' valid? */ | |
61 | DEF_OL_FLAG(DP_PACKET_OL_RSS_HASH, PKT_RX_RSS_HASH, 0x1), | |
62 | /* Is the 'flow_mark' valid? */ | |
63 | DEF_OL_FLAG(DP_PACKET_OL_FLOW_MARK, PKT_RX_FDIR_ID, 0x2), | |
64 | /* Bad L4 checksum in the packet. */ | |
65 | DEF_OL_FLAG(DP_PACKET_OL_RX_L4_CKSUM_BAD, PKT_RX_L4_CKSUM_BAD, 0x4), | |
66 | /* Bad IP checksum in the packet. */ | |
67 | DEF_OL_FLAG(DP_PACKET_OL_RX_IP_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD, 0x8), | |
68 | /* Valid L4 checksum in the packet. */ | |
69 | DEF_OL_FLAG(DP_PACKET_OL_RX_L4_CKSUM_GOOD, PKT_RX_L4_CKSUM_GOOD, 0x10), | |
70 | /* Valid IP checksum in the packet. */ | |
71 | DEF_OL_FLAG(DP_PACKET_OL_RX_IP_CKSUM_GOOD, PKT_RX_IP_CKSUM_GOOD, 0x20), | |
72 | /* TCP Segmentation Offload. */ | |
73 | DEF_OL_FLAG(DP_PACKET_OL_TX_TCP_SEG, PKT_TX_TCP_SEG, 0x40), | |
74 | /* Offloaded packet is IPv4. */ | |
75 | DEF_OL_FLAG(DP_PACKET_OL_TX_IPV4, PKT_TX_IPV4, 0x80), | |
76 | /* Offloaded packet is IPv6. */ | |
77 | DEF_OL_FLAG(DP_PACKET_OL_TX_IPV6, PKT_TX_IPV6, 0x100), | |
78 | /* Offload TCP checksum. */ | |
79 | DEF_OL_FLAG(DP_PACKET_OL_TX_TCP_CKSUM, PKT_TX_TCP_CKSUM, 0x200), | |
80 | /* Offload UDP checksum. */ | |
81 | DEF_OL_FLAG(DP_PACKET_OL_TX_UDP_CKSUM, PKT_TX_UDP_CKSUM, 0x400), | |
82 | /* Offload SCTP checksum. */ | |
83 | DEF_OL_FLAG(DP_PACKET_OL_TX_SCTP_CKSUM, PKT_TX_SCTP_CKSUM, 0x800), | |
84 | /* Adding new field requires adding to DP_PACKET_OL_SUPPORTED_MASK. */ | |
85 | }; | |
86 | ||
87 | #define DP_PACKET_OL_SUPPORTED_MASK (DP_PACKET_OL_RSS_HASH | \ | |
88 | DP_PACKET_OL_FLOW_MARK | \ | |
89 | DP_PACKET_OL_RX_L4_CKSUM_BAD | \ | |
90 | DP_PACKET_OL_RX_IP_CKSUM_BAD | \ | |
91 | DP_PACKET_OL_RX_L4_CKSUM_GOOD | \ | |
92 | DP_PACKET_OL_RX_IP_CKSUM_GOOD | \ | |
93 | DP_PACKET_OL_TX_TCP_SEG | \ | |
94 | DP_PACKET_OL_TX_IPV4 | \ | |
95 | DP_PACKET_OL_TX_IPV6 | \ | |
96 | DP_PACKET_OL_TX_TCP_CKSUM | \ | |
97 | DP_PACKET_OL_TX_UDP_CKSUM | \ | |
98 | DP_PACKET_OL_TX_SCTP_CKSUM) | |
99 | ||
100 | #define DP_PACKET_OL_TX_L4_MASK (DP_PACKET_OL_TX_TCP_CKSUM | \ | |
101 | DP_PACKET_OL_TX_UDP_CKSUM | \ | |
102 | DP_PACKET_OL_TX_SCTP_CKSUM) | |
103 | #define DP_PACKET_OL_RX_IP_CKSUM_MASK (DP_PACKET_OL_RX_IP_CKSUM_GOOD | \ | |
104 | DP_PACKET_OL_RX_IP_CKSUM_BAD) | |
105 | #define DP_PACKET_OL_RX_L4_CKSUM_MASK (DP_PACKET_OL_RX_L4_CKSUM_GOOD | \ | |
106 | DP_PACKET_OL_RX_L4_CKSUM_BAD) | |
107 | ||
108 | /* Buffer for holding packet data. A dp_packet is automatically reallocated | |
109 | * as necessary if it grows too large for the available memory. | |
110 | * By default the packet type is set to Ethernet (PT_ETH). | |
111 | */ | |
112 | struct dp_packet { | |
113 | #ifdef DPDK_NETDEV | |
114 | struct rte_mbuf mbuf; /* DPDK mbuf */ | |
115 | #else | |
116 | void *base_; /* First byte of allocated space. */ | |
117 | uint16_t allocated_; /* Number of bytes allocated. */ | |
118 | uint16_t data_ofs; /* First byte actually in use. */ | |
119 | uint32_t size_; /* Number of bytes in use. */ | |
120 | uint32_t ol_flags; /* Offloading flags. */ | |
121 | uint32_t rss_hash; /* Packet hash. */ | |
122 | uint32_t flow_mark; /* Packet flow mark. */ | |
123 | #endif | |
124 | enum dp_packet_source source; /* Source of memory allocated as 'base'. */ | |
125 | ||
126 | /* All the following elements of this struct are copied in a single call | |
127 | * of memcpy in dp_packet_clone_with_headroom. */ | |
128 | uint16_t l2_pad_size; /* Detected l2 padding size. | |
129 | * Padding is non-pullable. */ | |
130 | uint16_t l2_5_ofs; /* MPLS label stack offset, or UINT16_MAX */ | |
131 | uint16_t l3_ofs; /* Network-level header offset, | |
132 | * or UINT16_MAX. */ | |
133 | uint16_t l4_ofs; /* Transport-level header offset, | |
134 | or UINT16_MAX. */ | |
135 | uint32_t cutlen; /* length in bytes to cut from the end. */ | |
136 | ovs_be32 packet_type; /* Packet type as defined in OpenFlow */ | |
137 | union { | |
138 | struct pkt_metadata md; | |
139 | uint64_t data[DP_PACKET_CONTEXT_SIZE / 8]; | |
140 | }; | |
141 | }; | |
142 | ||
143 | #if HAVE_AF_XDP | |
144 | struct dp_packet_afxdp { | |
145 | struct umem_pool *mpool; | |
146 | struct dp_packet packet; | |
147 | }; | |
148 | #endif | |
149 | ||
150 | static inline void *dp_packet_data(const struct dp_packet *); | |
151 | static inline void dp_packet_set_data(struct dp_packet *, void *); | |
152 | static inline void *dp_packet_base(const struct dp_packet *); | |
153 | static inline void dp_packet_set_base(struct dp_packet *, void *); | |
154 | ||
155 | static inline uint32_t dp_packet_size(const struct dp_packet *); | |
156 | static inline void dp_packet_set_size(struct dp_packet *, uint32_t); | |
157 | ||
158 | static inline uint16_t dp_packet_get_allocated(const struct dp_packet *); | |
159 | static inline void dp_packet_set_allocated(struct dp_packet *, uint16_t); | |
160 | ||
161 | void *dp_packet_resize_l2(struct dp_packet *, int increment); | |
162 | void *dp_packet_resize_l2_5(struct dp_packet *, int increment); | |
163 | static inline void *dp_packet_eth(const struct dp_packet *); | |
164 | static inline void dp_packet_reset_offsets(struct dp_packet *); | |
165 | static inline uint16_t dp_packet_l2_pad_size(const struct dp_packet *); | |
166 | static inline void dp_packet_set_l2_pad_size(struct dp_packet *, uint16_t); | |
167 | static inline void *dp_packet_l2_5(const struct dp_packet *); | |
168 | static inline void dp_packet_set_l2_5(struct dp_packet *, void *); | |
169 | static inline void *dp_packet_l3(const struct dp_packet *); | |
170 | static inline void dp_packet_set_l3(struct dp_packet *, void *); | |
171 | static inline void *dp_packet_l4(const struct dp_packet *); | |
172 | static inline void dp_packet_set_l4(struct dp_packet *, void *); | |
173 | static inline size_t dp_packet_l4_size(const struct dp_packet *); | |
174 | static inline const void *dp_packet_get_tcp_payload(const struct dp_packet *); | |
175 | static inline const void *dp_packet_get_udp_payload(const struct dp_packet *); | |
176 | static inline const void *dp_packet_get_sctp_payload(const struct dp_packet *); | |
177 | static inline const void *dp_packet_get_icmp_payload(const struct dp_packet *); | |
178 | static inline const void *dp_packet_get_nd_payload(const struct dp_packet *); | |
179 | ||
180 | void dp_packet_use(struct dp_packet *, void *, size_t); | |
181 | void dp_packet_use_stub(struct dp_packet *, void *, size_t); | |
182 | void dp_packet_use_const(struct dp_packet *, const void *, size_t); | |
183 | #if HAVE_AF_XDP | |
184 | void dp_packet_use_afxdp(struct dp_packet *, void *, size_t, size_t); | |
185 | #endif | |
186 | void dp_packet_init_dpdk(struct dp_packet *); | |
187 | ||
188 | void dp_packet_init(struct dp_packet *, size_t); | |
189 | void dp_packet_uninit(struct dp_packet *); | |
190 | ||
191 | struct dp_packet *dp_packet_new(size_t); | |
192 | struct dp_packet *dp_packet_new_with_headroom(size_t, size_t headroom); | |
193 | struct dp_packet *dp_packet_clone(const struct dp_packet *); | |
194 | struct dp_packet *dp_packet_clone_with_headroom(const struct dp_packet *, | |
195 | size_t headroom); | |
196 | struct dp_packet *dp_packet_clone_data(const void *, size_t); | |
197 | struct dp_packet *dp_packet_clone_data_with_headroom(const void *, size_t, | |
198 | size_t headroom); | |
199 | void dp_packet_resize(struct dp_packet *b, size_t new_headroom, | |
200 | size_t new_tailroom); | |
201 | static inline void dp_packet_delete(struct dp_packet *); | |
202 | ||
203 | static inline void *dp_packet_at(const struct dp_packet *, size_t offset, | |
204 | size_t size); | |
205 | static inline void *dp_packet_at_assert(const struct dp_packet *, | |
206 | size_t offset, size_t size); | |
207 | static inline void *dp_packet_tail(const struct dp_packet *); | |
208 | static inline void *dp_packet_end(const struct dp_packet *); | |
209 | ||
210 | void *dp_packet_put_uninit(struct dp_packet *, size_t); | |
211 | void *dp_packet_put_zeros(struct dp_packet *, size_t); | |
212 | void *dp_packet_put(struct dp_packet *, const void *, size_t); | |
213 | char *dp_packet_put_hex(struct dp_packet *, const char *s, size_t *n); | |
214 | void dp_packet_reserve(struct dp_packet *, size_t); | |
215 | void dp_packet_reserve_with_tailroom(struct dp_packet *, size_t headroom, | |
216 | size_t tailroom); | |
217 | void *dp_packet_push_uninit(struct dp_packet *, size_t); | |
218 | void *dp_packet_push_zeros(struct dp_packet *, size_t); | |
219 | void *dp_packet_push(struct dp_packet *, const void *, size_t); | |
220 | ||
221 | static inline size_t dp_packet_headroom(const struct dp_packet *); | |
222 | static inline size_t dp_packet_tailroom(const struct dp_packet *); | |
223 | void dp_packet_prealloc_headroom(struct dp_packet *, size_t); | |
224 | void dp_packet_prealloc_tailroom(struct dp_packet *, size_t); | |
225 | void dp_packet_shift(struct dp_packet *, int); | |
226 | ||
227 | static inline void dp_packet_clear(struct dp_packet *); | |
228 | static inline void *dp_packet_pull(struct dp_packet *, size_t); | |
229 | static inline void *dp_packet_try_pull(struct dp_packet *, size_t); | |
230 | ||
231 | void *dp_packet_steal_data(struct dp_packet *); | |
232 | ||
233 | static inline bool dp_packet_equal(const struct dp_packet *, | |
234 | const struct dp_packet *); | |
235 | ||
236 | \f | |
237 | /* Frees memory that 'b' points to, as well as 'b' itself. */ | |
238 | static inline void | |
239 | dp_packet_delete(struct dp_packet *b) | |
240 | { | |
241 | if (b) { | |
242 | if (b->source == DPBUF_DPDK) { | |
243 | /* If this dp_packet was allocated by DPDK it must have been | |
244 | * created as a dp_packet */ | |
245 | free_dpdk_buf((struct dp_packet*) b); | |
246 | return; | |
247 | } | |
248 | ||
249 | if (b->source == DPBUF_AFXDP) { | |
250 | free_afxdp_buf(b); | |
251 | return; | |
252 | } | |
253 | ||
254 | dp_packet_uninit(b); | |
255 | free(b); | |
256 | } | |
257 | } | |
258 | ||
259 | /* If 'b' contains at least 'offset + size' bytes of data, returns a pointer to | |
260 | * byte 'offset'. Otherwise, returns a null pointer. */ | |
261 | static inline void * | |
262 | dp_packet_at(const struct dp_packet *b, size_t offset, size_t size) | |
263 | { | |
264 | return offset + size <= dp_packet_size(b) | |
265 | ? (char *) dp_packet_data(b) + offset | |
266 | : NULL; | |
267 | } | |
268 | ||
269 | /* Returns a pointer to byte 'offset' in 'b', which must contain at least | |
270 | * 'offset + size' bytes of data. */ | |
271 | static inline void * | |
272 | dp_packet_at_assert(const struct dp_packet *b, size_t offset, size_t size) | |
273 | { | |
274 | ovs_assert(offset + size <= dp_packet_size(b)); | |
275 | return ((char *) dp_packet_data(b)) + offset; | |
276 | } | |
277 | ||
278 | /* Returns a pointer to byte following the last byte of data in use in 'b'. */ | |
279 | static inline void * | |
280 | dp_packet_tail(const struct dp_packet *b) | |
281 | { | |
282 | return (char *) dp_packet_data(b) + dp_packet_size(b); | |
283 | } | |
284 | ||
285 | /* Returns a pointer to byte following the last byte allocated for use (but | |
286 | * not necessarily in use) in 'b'. */ | |
287 | static inline void * | |
288 | dp_packet_end(const struct dp_packet *b) | |
289 | { | |
290 | return (char *) dp_packet_base(b) + dp_packet_get_allocated(b); | |
291 | } | |
292 | ||
293 | /* Returns the number of bytes of headroom in 'b', that is, the number of bytes | |
294 | * of unused space in dp_packet 'b' before the data that is in use. (Most | |
295 | * commonly, the data in a dp_packet is at its beginning, and thus the | |
296 | * dp_packet's headroom is 0.) */ | |
297 | static inline size_t | |
298 | dp_packet_headroom(const struct dp_packet *b) | |
299 | { | |
300 | return (char *) dp_packet_data(b) - (char *) dp_packet_base(b); | |
301 | } | |
302 | ||
303 | /* Returns the number of bytes that may be appended to the tail end of | |
304 | * dp_packet 'b' before the dp_packet must be reallocated. */ | |
305 | static inline size_t | |
306 | dp_packet_tailroom(const struct dp_packet *b) | |
307 | { | |
308 | return (char *) dp_packet_end(b) - (char *) dp_packet_tail(b); | |
309 | } | |
310 | ||
311 | /* Clears any data from 'b'. */ | |
312 | static inline void | |
313 | dp_packet_clear(struct dp_packet *b) | |
314 | { | |
315 | dp_packet_set_data(b, dp_packet_base(b)); | |
316 | dp_packet_set_size(b, 0); | |
317 | } | |
318 | ||
319 | /* Removes 'size' bytes from the head end of 'b', which must contain at least | |
320 | * 'size' bytes of data. Returns the first byte of data removed. */ | |
321 | static inline void * | |
322 | dp_packet_pull(struct dp_packet *b, size_t size) | |
323 | { | |
324 | void *data = dp_packet_data(b); | |
325 | ovs_assert(dp_packet_size(b) - dp_packet_l2_pad_size(b) >= size); | |
326 | dp_packet_set_data(b, (char *) dp_packet_data(b) + size); | |
327 | dp_packet_set_size(b, dp_packet_size(b) - size); | |
328 | return data; | |
329 | } | |
330 | ||
331 | /* If 'b' has at least 'size' bytes of data, removes that many bytes from the | |
332 | * head end of 'b' and returns the first byte removed. Otherwise, returns a | |
333 | * null pointer without modifying 'b'. */ | |
334 | static inline void * | |
335 | dp_packet_try_pull(struct dp_packet *b, size_t size) | |
336 | { | |
337 | return dp_packet_size(b) - dp_packet_l2_pad_size(b) >= size | |
338 | ? dp_packet_pull(b, size) : NULL; | |
339 | } | |
340 | ||
341 | static inline bool | |
342 | dp_packet_equal(const struct dp_packet *a, const struct dp_packet *b) | |
343 | { | |
344 | return dp_packet_size(a) == dp_packet_size(b) && | |
345 | !memcmp(dp_packet_data(a), dp_packet_data(b), dp_packet_size(a)); | |
346 | } | |
347 | ||
348 | static inline bool | |
349 | dp_packet_is_eth(const struct dp_packet *b) | |
350 | { | |
351 | return b->packet_type == htonl(PT_ETH); | |
352 | } | |
353 | ||
354 | /* Get the start of the Ethernet frame. 'l3_ofs' marks the end of the l2 | |
355 | * headers, so return NULL if it is not set. */ | |
356 | static inline void * | |
357 | dp_packet_eth(const struct dp_packet *b) | |
358 | { | |
359 | return (dp_packet_is_eth(b) && b->l3_ofs != UINT16_MAX) | |
360 | ? dp_packet_data(b) : NULL; | |
361 | } | |
362 | ||
363 | /* Resets all layer offsets. 'l3' offset must be set before 'l2' can be | |
364 | * retrieved. */ | |
365 | static inline void | |
366 | dp_packet_reset_offsets(struct dp_packet *b) | |
367 | { | |
368 | b->l2_pad_size = 0; | |
369 | b->l2_5_ofs = UINT16_MAX; | |
370 | b->l3_ofs = UINT16_MAX; | |
371 | b->l4_ofs = UINT16_MAX; | |
372 | } | |
373 | ||
374 | static inline uint16_t | |
375 | dp_packet_l2_pad_size(const struct dp_packet *b) | |
376 | { | |
377 | return b->l2_pad_size; | |
378 | } | |
379 | ||
380 | static inline void | |
381 | dp_packet_set_l2_pad_size(struct dp_packet *b, uint16_t pad_size) | |
382 | { | |
383 | ovs_assert(pad_size <= dp_packet_size(b)); | |
384 | b->l2_pad_size = pad_size; | |
385 | } | |
386 | ||
387 | static inline void * | |
388 | dp_packet_l2_5(const struct dp_packet *b) | |
389 | { | |
390 | return b->l2_5_ofs != UINT16_MAX | |
391 | ? (char *) dp_packet_data(b) + b->l2_5_ofs | |
392 | : NULL; | |
393 | } | |
394 | ||
395 | static inline void | |
396 | dp_packet_set_l2_5(struct dp_packet *b, void *l2_5) | |
397 | { | |
398 | b->l2_5_ofs = l2_5 | |
399 | ? (char *) l2_5 - (char *) dp_packet_data(b) | |
400 | : UINT16_MAX; | |
401 | } | |
402 | ||
403 | static inline void * | |
404 | dp_packet_l3(const struct dp_packet *b) | |
405 | { | |
406 | return b->l3_ofs != UINT16_MAX | |
407 | ? (char *) dp_packet_data(b) + b->l3_ofs | |
408 | : NULL; | |
409 | } | |
410 | ||
411 | static inline void | |
412 | dp_packet_set_l3(struct dp_packet *b, void *l3) | |
413 | { | |
414 | b->l3_ofs = l3 ? (char *) l3 - (char *) dp_packet_data(b) : UINT16_MAX; | |
415 | } | |
416 | ||
417 | static inline void * | |
418 | dp_packet_l4(const struct dp_packet *b) | |
419 | { | |
420 | return b->l4_ofs != UINT16_MAX | |
421 | ? (char *) dp_packet_data(b) + b->l4_ofs | |
422 | : NULL; | |
423 | } | |
424 | ||
425 | static inline void | |
426 | dp_packet_set_l4(struct dp_packet *b, void *l4) | |
427 | { | |
428 | b->l4_ofs = l4 ? (char *) l4 - (char *) dp_packet_data(b) : UINT16_MAX; | |
429 | } | |
430 | ||
431 | /* Returns the size of the packet from the beginning of the L3 header to the | |
432 | * end of the L3 payload. Hence L2 padding is not included. */ | |
433 | static inline size_t | |
434 | dp_packet_l3_size(const struct dp_packet *b) | |
435 | { | |
436 | return OVS_LIKELY(b->l3_ofs != UINT16_MAX) | |
437 | ? (const char *)dp_packet_tail(b) - (const char *)dp_packet_l3(b) | |
438 | - dp_packet_l2_pad_size(b) | |
439 | : 0; | |
440 | } | |
441 | ||
442 | /* Returns the size of the packet from the beginning of the L4 header to the | |
443 | * end of the L4 payload. Hence L2 padding is not included. */ | |
444 | static inline size_t | |
445 | dp_packet_l4_size(const struct dp_packet *b) | |
446 | { | |
447 | return OVS_LIKELY(b->l4_ofs != UINT16_MAX) | |
448 | ? (const char *)dp_packet_tail(b) - (const char *)dp_packet_l4(b) | |
449 | - dp_packet_l2_pad_size(b) | |
450 | : 0; | |
451 | } | |
452 | ||
453 | static inline const void * | |
454 | dp_packet_get_tcp_payload(const struct dp_packet *b) | |
455 | { | |
456 | size_t l4_size = dp_packet_l4_size(b); | |
457 | ||
458 | if (OVS_LIKELY(l4_size >= TCP_HEADER_LEN)) { | |
459 | struct tcp_header *tcp = dp_packet_l4(b); | |
460 | int tcp_len = TCP_OFFSET(tcp->tcp_ctl) * 4; | |
461 | ||
462 | if (OVS_LIKELY(tcp_len >= TCP_HEADER_LEN && tcp_len <= l4_size)) { | |
463 | return (const char *)tcp + tcp_len; | |
464 | } | |
465 | } | |
466 | return NULL; | |
467 | } | |
468 | ||
469 | static inline uint32_t | |
470 | dp_packet_get_tcp_payload_length(const struct dp_packet *pkt) | |
471 | { | |
472 | const char *tcp_payload = dp_packet_get_tcp_payload(pkt); | |
473 | if (tcp_payload) { | |
474 | return ((char *) dp_packet_tail(pkt) - dp_packet_l2_pad_size(pkt) | |
475 | - tcp_payload); | |
476 | } else { | |
477 | return 0; | |
478 | } | |
479 | } | |
480 | ||
481 | static inline const void * | |
482 | dp_packet_get_udp_payload(const struct dp_packet *b) | |
483 | { | |
484 | return OVS_LIKELY(dp_packet_l4_size(b) >= UDP_HEADER_LEN) | |
485 | ? (const char *)dp_packet_l4(b) + UDP_HEADER_LEN : NULL; | |
486 | } | |
487 | ||
488 | static inline const void * | |
489 | dp_packet_get_sctp_payload(const struct dp_packet *b) | |
490 | { | |
491 | return OVS_LIKELY(dp_packet_l4_size(b) >= SCTP_HEADER_LEN) | |
492 | ? (const char *)dp_packet_l4(b) + SCTP_HEADER_LEN : NULL; | |
493 | } | |
494 | ||
495 | static inline const void * | |
496 | dp_packet_get_icmp_payload(const struct dp_packet *b) | |
497 | { | |
498 | return OVS_LIKELY(dp_packet_l4_size(b) >= ICMP_HEADER_LEN) | |
499 | ? (const char *)dp_packet_l4(b) + ICMP_HEADER_LEN : NULL; | |
500 | } | |
501 | ||
502 | static inline const void * | |
503 | dp_packet_get_nd_payload(const struct dp_packet *b) | |
504 | { | |
505 | return OVS_LIKELY(dp_packet_l4_size(b) >= ND_MSG_LEN) | |
506 | ? (const char *)dp_packet_l4(b) + ND_MSG_LEN : NULL; | |
507 | } | |
508 | ||
509 | #ifdef DPDK_NETDEV | |
510 | static inline uint64_t * | |
511 | dp_packet_ol_flags_ptr(const struct dp_packet *b) | |
512 | { | |
513 | return CONST_CAST(uint64_t *, &b->mbuf.ol_flags); | |
514 | } | |
515 | ||
516 | static inline uint32_t * | |
517 | dp_packet_rss_ptr(const struct dp_packet *b) | |
518 | { | |
519 | return CONST_CAST(uint32_t *, &b->mbuf.hash.rss); | |
520 | } | |
521 | ||
522 | static inline uint32_t * | |
523 | dp_packet_flow_mark_ptr(const struct dp_packet *b) | |
524 | { | |
525 | return CONST_CAST(uint32_t *, &b->mbuf.hash.fdir.hi); | |
526 | } | |
527 | ||
528 | #else | |
529 | static inline uint32_t * | |
530 | dp_packet_ol_flags_ptr(const struct dp_packet *b) | |
531 | { | |
532 | return CONST_CAST(uint32_t *, &b->ol_flags); | |
533 | } | |
534 | ||
535 | static inline uint32_t * | |
536 | dp_packet_rss_ptr(const struct dp_packet *b) | |
537 | { | |
538 | return CONST_CAST(uint32_t *, &b->rss_hash); | |
539 | } | |
540 | ||
541 | static inline uint32_t * | |
542 | dp_packet_flow_mark_ptr(const struct dp_packet *b) | |
543 | { | |
544 | return CONST_CAST(uint32_t *, &b->flow_mark); | |
545 | } | |
546 | #endif | |
547 | ||
548 | #ifdef DPDK_NETDEV | |
549 | BUILD_ASSERT_DECL(offsetof(struct dp_packet, mbuf) == 0); | |
550 | ||
551 | static inline void | |
552 | dp_packet_init_specific(struct dp_packet *p) | |
553 | { | |
554 | /* This initialization is needed for packets that do not come from DPDK | |
555 | * interfaces, when vswitchd is built with --with-dpdk. */ | |
556 | p->mbuf.ol_flags = p->mbuf.tx_offload = p->mbuf.packet_type = 0; | |
557 | p->mbuf.nb_segs = 1; | |
558 | p->mbuf.next = NULL; | |
559 | } | |
560 | ||
561 | static inline void * | |
562 | dp_packet_base(const struct dp_packet *b) | |
563 | { | |
564 | return b->mbuf.buf_addr; | |
565 | } | |
566 | ||
567 | static inline void | |
568 | dp_packet_set_base(struct dp_packet *b, void *d) | |
569 | { | |
570 | b->mbuf.buf_addr = d; | |
571 | } | |
572 | ||
573 | static inline uint32_t | |
574 | dp_packet_size(const struct dp_packet *b) | |
575 | { | |
576 | return b->mbuf.pkt_len; | |
577 | } | |
578 | ||
579 | static inline void | |
580 | dp_packet_set_size(struct dp_packet *b, uint32_t v) | |
581 | { | |
582 | /* netdev-dpdk does not currently support segmentation; consequently, for | |
583 | * all intents and purposes, 'data_len' (16 bit) and 'pkt_len' (32 bit) may | |
584 | * be used interchangably. | |
585 | * | |
586 | * On the datapath, it is expected that the size of packets | |
587 | * (and thus 'v') will always be <= UINT16_MAX; this means that there is no | |
588 | * loss of accuracy in assigning 'v' to 'data_len'. | |
589 | */ | |
590 | b->mbuf.data_len = (uint16_t)v; /* Current seg length. */ | |
591 | b->mbuf.pkt_len = v; /* Total length of all segments linked to | |
592 | * this segment. */ | |
593 | } | |
594 | ||
595 | static inline uint16_t | |
596 | __packet_data(const struct dp_packet *b) | |
597 | { | |
598 | return b->mbuf.data_off; | |
599 | } | |
600 | ||
601 | static inline void | |
602 | __packet_set_data(struct dp_packet *b, uint16_t v) | |
603 | { | |
604 | b->mbuf.data_off = v; | |
605 | } | |
606 | ||
607 | static inline uint16_t | |
608 | dp_packet_get_allocated(const struct dp_packet *b) | |
609 | { | |
610 | return b->mbuf.buf_len; | |
611 | } | |
612 | ||
613 | static inline void | |
614 | dp_packet_set_allocated(struct dp_packet *b, uint16_t s) | |
615 | { | |
616 | b->mbuf.buf_len = s; | |
617 | } | |
618 | ||
619 | #else /* DPDK_NETDEV */ | |
620 | ||
621 | static inline void | |
622 | dp_packet_init_specific(struct dp_packet *p OVS_UNUSED) | |
623 | { | |
624 | /* There are no implementation-specific fields for initialization. */ | |
625 | } | |
626 | ||
627 | static inline void * | |
628 | dp_packet_base(const struct dp_packet *b) | |
629 | { | |
630 | return b->base_; | |
631 | } | |
632 | ||
633 | static inline void | |
634 | dp_packet_set_base(struct dp_packet *b, void *d) | |
635 | { | |
636 | b->base_ = d; | |
637 | } | |
638 | ||
639 | static inline uint32_t | |
640 | dp_packet_size(const struct dp_packet *b) | |
641 | { | |
642 | return b->size_; | |
643 | } | |
644 | ||
645 | static inline void | |
646 | dp_packet_set_size(struct dp_packet *b, uint32_t v) | |
647 | { | |
648 | b->size_ = v; | |
649 | } | |
650 | ||
651 | static inline uint16_t | |
652 | __packet_data(const struct dp_packet *b) | |
653 | { | |
654 | return b->data_ofs; | |
655 | } | |
656 | ||
657 | static inline void | |
658 | __packet_set_data(struct dp_packet *b, uint16_t v) | |
659 | { | |
660 | b->data_ofs = v; | |
661 | } | |
662 | ||
663 | static inline uint16_t | |
664 | dp_packet_get_allocated(const struct dp_packet *b) | |
665 | { | |
666 | return b->allocated_; | |
667 | } | |
668 | ||
669 | static inline void | |
670 | dp_packet_set_allocated(struct dp_packet *b, uint16_t s) | |
671 | { | |
672 | b->allocated_ = s; | |
673 | } | |
674 | ||
675 | #endif /* DPDK_NETDEV */ | |
676 | ||
677 | static inline void | |
678 | dp_packet_reset_cutlen(struct dp_packet *b) | |
679 | { | |
680 | b->cutlen = 0; | |
681 | } | |
682 | ||
683 | static inline uint32_t | |
684 | dp_packet_set_cutlen(struct dp_packet *b, uint32_t max_len) | |
685 | { | |
686 | if (max_len < ETH_HEADER_LEN) { | |
687 | max_len = ETH_HEADER_LEN; | |
688 | } | |
689 | ||
690 | if (max_len >= dp_packet_size(b)) { | |
691 | b->cutlen = 0; | |
692 | } else { | |
693 | b->cutlen = dp_packet_size(b) - max_len; | |
694 | } | |
695 | return b->cutlen; | |
696 | } | |
697 | ||
698 | static inline uint32_t | |
699 | dp_packet_get_cutlen(const struct dp_packet *b) | |
700 | { | |
701 | /* Always in valid range if user uses dp_packet_set_cutlen. */ | |
702 | return b->cutlen; | |
703 | } | |
704 | ||
705 | static inline uint32_t | |
706 | dp_packet_get_send_len(const struct dp_packet *b) | |
707 | { | |
708 | return dp_packet_size(b) - dp_packet_get_cutlen(b); | |
709 | } | |
710 | ||
711 | static inline void * | |
712 | dp_packet_data(const struct dp_packet *b) | |
713 | { | |
714 | return __packet_data(b) != UINT16_MAX | |
715 | ? (char *) dp_packet_base(b) + __packet_data(b) : NULL; | |
716 | } | |
717 | ||
718 | static inline void | |
719 | dp_packet_set_data(struct dp_packet *b, void *data) | |
720 | { | |
721 | if (data) { | |
722 | __packet_set_data(b, (char *) data - (char *) dp_packet_base(b)); | |
723 | } else { | |
724 | __packet_set_data(b, UINT16_MAX); | |
725 | } | |
726 | } | |
727 | ||
728 | static inline void | |
729 | dp_packet_reset_packet(struct dp_packet *b, int off) | |
730 | { | |
731 | dp_packet_set_size(b, dp_packet_size(b) - off); | |
732 | dp_packet_set_data(b, ((unsigned char *) dp_packet_data(b) + off)); | |
733 | dp_packet_reset_offsets(b); | |
734 | } | |
735 | ||
736 | enum { NETDEV_MAX_BURST = 32 }; /* Maximum number packets in a batch. */ | |
737 | ||
738 | struct dp_packet_batch { | |
739 | size_t count; | |
740 | bool trunc; /* true if the batch needs truncate. */ | |
741 | bool do_not_steal; /* Indicate that the packets should not be stolen. */ | |
742 | struct dp_packet *packets[NETDEV_MAX_BURST]; | |
743 | }; | |
744 | ||
745 | static inline void | |
746 | dp_packet_batch_init(struct dp_packet_batch *batch) | |
747 | { | |
748 | batch->count = 0; | |
749 | batch->trunc = false; | |
750 | batch->do_not_steal = false; | |
751 | } | |
752 | ||
753 | static inline void | |
754 | dp_packet_batch_add__(struct dp_packet_batch *batch, | |
755 | struct dp_packet *packet, size_t limit) | |
756 | { | |
757 | if (batch->count < limit) { | |
758 | batch->packets[batch->count++] = packet; | |
759 | } else { | |
760 | dp_packet_delete(packet); | |
761 | } | |
762 | } | |
763 | ||
764 | /* When the batch is full, 'packet' will be dropped and freed. */ | |
765 | static inline void | |
766 | dp_packet_batch_add(struct dp_packet_batch *batch, struct dp_packet *packet) | |
767 | { | |
768 | dp_packet_batch_add__(batch, packet, NETDEV_MAX_BURST); | |
769 | } | |
770 | ||
771 | static inline size_t | |
772 | dp_packet_batch_size(const struct dp_packet_batch *batch) | |
773 | { | |
774 | return batch->count; | |
775 | } | |
776 | ||
777 | /* Clear 'batch' for refill. Use dp_packet_batch_refill() to add | |
778 | * packets back into the 'batch'. */ | |
779 | static inline void | |
780 | dp_packet_batch_refill_init(struct dp_packet_batch *batch) | |
781 | { | |
782 | batch->count = 0; | |
783 | }; | |
784 | ||
785 | static inline void | |
786 | dp_packet_batch_refill(struct dp_packet_batch *batch, | |
787 | struct dp_packet *packet, size_t idx) | |
788 | { | |
789 | dp_packet_batch_add__(batch, packet, MIN(NETDEV_MAX_BURST, idx + 1)); | |
790 | } | |
791 | ||
792 | static inline void | |
793 | dp_packet_batch_init_packet(struct dp_packet_batch *batch, struct dp_packet *p) | |
794 | { | |
795 | dp_packet_batch_init(batch); | |
796 | batch->count = 1; | |
797 | batch->packets[0] = p; | |
798 | } | |
799 | ||
800 | static inline bool | |
801 | dp_packet_batch_is_empty(const struct dp_packet_batch *batch) | |
802 | { | |
803 | return !dp_packet_batch_size(batch); | |
804 | } | |
805 | ||
806 | static inline bool | |
807 | dp_packet_batch_is_full(const struct dp_packet_batch *batch) | |
808 | { | |
809 | return dp_packet_batch_size(batch) == NETDEV_MAX_BURST; | |
810 | } | |
811 | ||
812 | #define DP_PACKET_BATCH_FOR_EACH(IDX, PACKET, BATCH) \ | |
813 | for (size_t IDX = 0; IDX < dp_packet_batch_size(BATCH); IDX++) \ | |
814 | if (PACKET = BATCH->packets[IDX], true) | |
815 | ||
816 | /* Use this macro for cases where some packets in the 'BATCH' may be | |
817 | * dropped after going through each packet in the 'BATCH'. | |
818 | * | |
819 | * For packets to stay in the 'BATCH', they need to be refilled back | |
820 | * into the 'BATCH' by calling dp_packet_batch_refill(). Caller owns | |
821 | * the packets that are not refilled. | |
822 | * | |
823 | * Caller needs to supply 'SIZE', that stores the current number of | |
824 | * packets in 'BATCH'. It is best to declare this variable with | |
825 | * the 'const' modifier since it should not be modified by | |
826 | * the iterator. */ | |
827 | #define DP_PACKET_BATCH_REFILL_FOR_EACH(IDX, SIZE, PACKET, BATCH) \ | |
828 | for (dp_packet_batch_refill_init(BATCH), IDX=0; IDX < SIZE; IDX++) \ | |
829 | if (PACKET = BATCH->packets[IDX], true) | |
830 | ||
831 | static inline void | |
832 | dp_packet_batch_clone(struct dp_packet_batch *dst, | |
833 | struct dp_packet_batch *src) | |
834 | { | |
835 | struct dp_packet *packet; | |
836 | ||
837 | dp_packet_batch_init(dst); | |
838 | DP_PACKET_BATCH_FOR_EACH (i, packet, src) { | |
839 | if (i + 1 < dp_packet_batch_size(src)) { | |
840 | OVS_PREFETCH(src->packets[i + 1]); | |
841 | } | |
842 | ||
843 | uint32_t headroom = dp_packet_headroom(packet); | |
844 | struct dp_packet *pkt_clone; | |
845 | ||
846 | pkt_clone = dp_packet_clone_with_headroom(packet, headroom); | |
847 | dp_packet_batch_add(dst, pkt_clone); | |
848 | } | |
849 | dst->trunc = src->trunc; | |
850 | } | |
851 | ||
852 | static inline void | |
853 | dp_packet_delete_batch(struct dp_packet_batch *batch, bool should_steal) | |
854 | { | |
855 | if (should_steal) { | |
856 | struct dp_packet *packet; | |
857 | ||
858 | DP_PACKET_BATCH_FOR_EACH (i, packet, batch) { | |
859 | dp_packet_delete(packet); | |
860 | } | |
861 | dp_packet_batch_init(batch); | |
862 | } | |
863 | } | |
864 | ||
865 | static inline void | |
866 | dp_packet_batch_init_packet_fields(struct dp_packet_batch *batch) | |
867 | { | |
868 | struct dp_packet *packet; | |
869 | ||
870 | DP_PACKET_BATCH_FOR_EACH (i, packet, batch) { | |
871 | dp_packet_reset_cutlen(packet); | |
872 | packet->packet_type = htonl(PT_ETH); | |
873 | } | |
874 | } | |
875 | ||
876 | static inline void | |
877 | dp_packet_batch_apply_cutlen(struct dp_packet_batch *batch) | |
878 | { | |
879 | if (batch->trunc) { | |
880 | struct dp_packet *packet; | |
881 | ||
882 | DP_PACKET_BATCH_FOR_EACH (i, packet, batch) { | |
883 | dp_packet_set_size(packet, dp_packet_get_send_len(packet)); | |
884 | dp_packet_reset_cutlen(packet); | |
885 | } | |
886 | batch->trunc = false; | |
887 | } | |
888 | } | |
889 | ||
890 | static inline void | |
891 | dp_packet_batch_reset_cutlen(struct dp_packet_batch *batch) | |
892 | { | |
893 | if (batch->trunc) { | |
894 | struct dp_packet *packet; | |
895 | ||
896 | DP_PACKET_BATCH_FOR_EACH (i, packet, batch) { | |
897 | dp_packet_reset_cutlen(packet); | |
898 | } | |
899 | batch->trunc = false; | |
900 | } | |
901 | } | |
902 | ||
903 | /* Returns the RSS hash of the packet 'p'. Note that the returned value is | |
904 | * correct only if 'dp_packet_rss_valid(p)' returns 'true'. */ | |
905 | static inline uint32_t | |
906 | dp_packet_get_rss_hash(const struct dp_packet *p) | |
907 | { | |
908 | return *dp_packet_rss_ptr(p); | |
909 | } | |
910 | ||
911 | static inline void | |
912 | dp_packet_set_rss_hash(struct dp_packet *p, uint32_t hash) | |
913 | { | |
914 | *dp_packet_rss_ptr(p) = hash; | |
915 | *dp_packet_ol_flags_ptr(p) |= DP_PACKET_OL_RSS_HASH; | |
916 | } | |
917 | ||
918 | static inline bool | |
919 | dp_packet_rss_valid(const struct dp_packet *p) | |
920 | { | |
921 | return *dp_packet_ol_flags_ptr(p) & DP_PACKET_OL_RSS_HASH; | |
922 | } | |
923 | ||
924 | static inline void | |
925 | dp_packet_reset_offload(struct dp_packet *p) | |
926 | { | |
927 | *dp_packet_ol_flags_ptr(p) &= ~DP_PACKET_OL_SUPPORTED_MASK; | |
928 | } | |
929 | ||
930 | static inline bool | |
931 | dp_packet_has_flow_mark(const struct dp_packet *p, uint32_t *mark) | |
932 | { | |
933 | if (*dp_packet_ol_flags_ptr(p) & DP_PACKET_OL_FLOW_MARK) { | |
934 | *mark = *dp_packet_flow_mark_ptr(p); | |
935 | return true; | |
936 | } | |
937 | ||
938 | return false; | |
939 | } | |
940 | ||
941 | static inline void | |
942 | dp_packet_set_flow_mark(struct dp_packet *p, uint32_t mark) | |
943 | { | |
944 | *dp_packet_flow_mark_ptr(p) = mark; | |
945 | *dp_packet_ol_flags_ptr(p) |= DP_PACKET_OL_FLOW_MARK; | |
946 | } | |
947 | ||
948 | /* Returns the L4 cksum offload bitmask. */ | |
949 | static inline uint64_t | |
950 | dp_packet_hwol_l4_mask(const struct dp_packet *b) | |
951 | { | |
952 | return *dp_packet_ol_flags_ptr(b) & DP_PACKET_OL_TX_L4_MASK; | |
953 | } | |
954 | ||
955 | /* Return true if the packet 'b' requested L4 checksum offload. */ | |
956 | static inline bool | |
957 | dp_packet_hwol_tx_l4_checksum(const struct dp_packet *b) | |
958 | { | |
959 | return !!dp_packet_hwol_l4_mask(b); | |
960 | } | |
961 | ||
962 | /* Returns 'true' if packet 'b' is marked for TCP segmentation offloading. */ | |
963 | static inline bool | |
964 | dp_packet_hwol_is_tso(const struct dp_packet *b) | |
965 | { | |
966 | return !!(*dp_packet_ol_flags_ptr(b) & DP_PACKET_OL_TX_TCP_SEG); | |
967 | } | |
968 | ||
969 | /* Returns 'true' if packet 'b' is marked for IPv4 checksum offloading. */ | |
970 | static inline bool | |
971 | dp_packet_hwol_is_ipv4(const struct dp_packet *b) | |
972 | { | |
973 | return !!(*dp_packet_ol_flags_ptr(b) & DP_PACKET_OL_TX_IPV4); | |
974 | } | |
975 | ||
976 | /* Returns 'true' if packet 'b' is marked for TCP checksum offloading. */ | |
977 | static inline bool | |
978 | dp_packet_hwol_l4_is_tcp(const struct dp_packet *b) | |
979 | { | |
980 | return (*dp_packet_ol_flags_ptr(b) & DP_PACKET_OL_TX_L4_MASK) == | |
981 | DP_PACKET_OL_TX_TCP_CKSUM; | |
982 | } | |
983 | ||
984 | /* Returns 'true' if packet 'b' is marked for UDP checksum offloading. */ | |
985 | static inline bool | |
986 | dp_packet_hwol_l4_is_udp(struct dp_packet *b) | |
987 | { | |
988 | return (*dp_packet_ol_flags_ptr(b) & DP_PACKET_OL_TX_L4_MASK) == | |
989 | DP_PACKET_OL_TX_UDP_CKSUM; | |
990 | } | |
991 | ||
992 | /* Returns 'true' if packet 'b' is marked for SCTP checksum offloading. */ | |
993 | static inline bool | |
994 | dp_packet_hwol_l4_is_sctp(struct dp_packet *b) | |
995 | { | |
996 | return (*dp_packet_ol_flags_ptr(b) & DP_PACKET_OL_TX_L4_MASK) == | |
997 | DP_PACKET_OL_TX_SCTP_CKSUM; | |
998 | } | |
999 | ||
1000 | /* Mark packet 'b' for IPv4 checksum offloading. */ | |
1001 | static inline void | |
1002 | dp_packet_hwol_set_tx_ipv4(struct dp_packet *b) | |
1003 | { | |
1004 | *dp_packet_ol_flags_ptr(b) |= DP_PACKET_OL_TX_IPV4; | |
1005 | } | |
1006 | ||
1007 | /* Mark packet 'b' for IPv6 checksum offloading. */ | |
1008 | static inline void | |
1009 | dp_packet_hwol_set_tx_ipv6(struct dp_packet *b) | |
1010 | { | |
1011 | *dp_packet_ol_flags_ptr(b) |= DP_PACKET_OL_TX_IPV6; | |
1012 | } | |
1013 | ||
1014 | /* Mark packet 'b' for TCP checksum offloading. It implies that either | |
1015 | * the packet 'b' is marked for IPv4 or IPv6 checksum offloading. */ | |
1016 | static inline void | |
1017 | dp_packet_hwol_set_csum_tcp(struct dp_packet *b) | |
1018 | { | |
1019 | *dp_packet_ol_flags_ptr(b) |= DP_PACKET_OL_TX_TCP_CKSUM; | |
1020 | } | |
1021 | ||
1022 | /* Mark packet 'b' for UDP checksum offloading. It implies that either | |
1023 | * the packet 'b' is marked for IPv4 or IPv6 checksum offloading. */ | |
1024 | static inline void | |
1025 | dp_packet_hwol_set_csum_udp(struct dp_packet *b) | |
1026 | { | |
1027 | *dp_packet_ol_flags_ptr(b) |= DP_PACKET_OL_TX_UDP_CKSUM; | |
1028 | } | |
1029 | ||
1030 | /* Mark packet 'b' for SCTP checksum offloading. It implies that either | |
1031 | * the packet 'b' is marked for IPv4 or IPv6 checksum offloading. */ | |
1032 | static inline void | |
1033 | dp_packet_hwol_set_csum_sctp(struct dp_packet *b) | |
1034 | { | |
1035 | *dp_packet_ol_flags_ptr(b) |= DP_PACKET_OL_TX_SCTP_CKSUM; | |
1036 | } | |
1037 | ||
1038 | /* Mark packet 'b' for TCP segmentation offloading. It implies that | |
1039 | * either the packet 'b' is marked for IPv4 or IPv6 checksum offloading | |
1040 | * and also for TCP checksum offloading. */ | |
1041 | static inline void | |
1042 | dp_packet_hwol_set_tcp_seg(struct dp_packet *b) | |
1043 | { | |
1044 | *dp_packet_ol_flags_ptr(b) |= DP_PACKET_OL_TX_TCP_SEG; | |
1045 | } | |
1046 | ||
1047 | static inline bool | |
1048 | dp_packet_ip_checksum_valid(const struct dp_packet *p) | |
1049 | { | |
1050 | return (*dp_packet_ol_flags_ptr(p) & DP_PACKET_OL_RX_IP_CKSUM_MASK) == | |
1051 | DP_PACKET_OL_RX_IP_CKSUM_GOOD; | |
1052 | } | |
1053 | ||
1054 | static inline bool | |
1055 | dp_packet_ip_checksum_bad(const struct dp_packet *p) | |
1056 | { | |
1057 | return (*dp_packet_ol_flags_ptr(p) & DP_PACKET_OL_RX_IP_CKSUM_MASK) == | |
1058 | DP_PACKET_OL_RX_IP_CKSUM_BAD; | |
1059 | } | |
1060 | ||
1061 | static inline bool | |
1062 | dp_packet_l4_checksum_valid(const struct dp_packet *p) | |
1063 | { | |
1064 | return (*dp_packet_ol_flags_ptr(p) & DP_PACKET_OL_RX_L4_CKSUM_MASK) == | |
1065 | DP_PACKET_OL_RX_L4_CKSUM_GOOD; | |
1066 | } | |
1067 | ||
1068 | static inline bool | |
1069 | dp_packet_l4_checksum_bad(const struct dp_packet *p) | |
1070 | { | |
1071 | return (*dp_packet_ol_flags_ptr(p) & DP_PACKET_OL_RX_L4_CKSUM_MASK) == | |
1072 | DP_PACKET_OL_RX_L4_CKSUM_BAD; | |
1073 | } | |
1074 | ||
1075 | #ifdef __cplusplus | |
1076 | } | |
1077 | #endif | |
1078 | ||
1079 | #endif /* dp-packet.h */ |