l3fwd_em_hlm_sse.h revision 809f0800
1/*-
2 *   BSD LICENSE
3 *
4 *   Copyright(c) 2016 Intel Corporation. All rights reserved.
5 *   All rights reserved.
6 *
7 *   Redistribution and use in source and binary forms, with or without
8 *   modification, are permitted provided that the following conditions
9 *   are met:
10 *
11 *     * Redistributions of source code must retain the above copyright
12 *       notice, this list of conditions and the following disclaimer.
13 *     * Redistributions in binary form must reproduce the above copyright
14 *       notice, this list of conditions and the following disclaimer in
15 *       the documentation and/or other materials provided with the
16 *       distribution.
17 *     * Neither the name of Intel Corporation nor the names of its
18 *       contributors may be used to endorse or promote products derived
19 *       from this software without specific prior written permission.
20 *
21 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef __L3FWD_EM_HLM_SSE_H__
35#define __L3FWD_EM_HLM_SSE_H__
36
37#include "l3fwd_sse.h"
38
39static inline __attribute__((always_inline)) void
40em_get_dst_port_ipv4x8(struct lcore_conf *qconf, struct rte_mbuf *m[8],
41		uint8_t portid, uint16_t dst_port[8])
42{
43	int32_t ret[8];
44	union ipv4_5tuple_host key[8];
45	__m128i data[8];
46
47	data[0] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[0], __m128i *,
48				sizeof(struct ether_hdr) +
49				offsetof(struct ipv4_hdr, time_to_live)));
50	data[1] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[1], __m128i *,
51				sizeof(struct ether_hdr) +
52				offsetof(struct ipv4_hdr, time_to_live)));
53	data[2] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[2], __m128i *,
54				sizeof(struct ether_hdr) +
55				offsetof(struct ipv4_hdr, time_to_live)));
56	data[3] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[3], __m128i *,
57				sizeof(struct ether_hdr) +
58				offsetof(struct ipv4_hdr, time_to_live)));
59	data[4] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[4], __m128i *,
60				sizeof(struct ether_hdr) +
61				offsetof(struct ipv4_hdr, time_to_live)));
62	data[5] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[5], __m128i *,
63				sizeof(struct ether_hdr) +
64				offsetof(struct ipv4_hdr, time_to_live)));
65	data[6] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[6], __m128i *,
66				sizeof(struct ether_hdr) +
67				offsetof(struct ipv4_hdr, time_to_live)));
68	data[7] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[7], __m128i *,
69				sizeof(struct ether_hdr) +
70				offsetof(struct ipv4_hdr, time_to_live)));
71
72	key[0].xmm = _mm_and_si128(data[0], mask0.x);
73	key[1].xmm = _mm_and_si128(data[1], mask0.x);
74	key[2].xmm = _mm_and_si128(data[2], mask0.x);
75	key[3].xmm = _mm_and_si128(data[3], mask0.x);
76	key[4].xmm = _mm_and_si128(data[4], mask0.x);
77	key[5].xmm = _mm_and_si128(data[5], mask0.x);
78	key[6].xmm = _mm_and_si128(data[6], mask0.x);
79	key[7].xmm = _mm_and_si128(data[7], mask0.x);
80
81	const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
82				&key[4], &key[5], &key[6], &key[7]};
83
84	rte_hash_lookup_bulk(qconf->ipv4_lookup_struct, &key_array[0], 8, ret);
85
86	dst_port[0] = (uint8_t) ((ret[0] < 0) ?
87			portid : ipv4_l3fwd_out_if[ret[0]]);
88	dst_port[1] = (uint8_t) ((ret[1] < 0) ?
89			portid : ipv4_l3fwd_out_if[ret[1]]);
90	dst_port[2] = (uint8_t) ((ret[2] < 0) ?
91			portid : ipv4_l3fwd_out_if[ret[2]]);
92	dst_port[3] = (uint8_t) ((ret[3] < 0) ?
93			portid : ipv4_l3fwd_out_if[ret[3]]);
94	dst_port[4] = (uint8_t) ((ret[4] < 0) ?
95			portid : ipv4_l3fwd_out_if[ret[4]]);
96	dst_port[5] = (uint8_t) ((ret[5] < 0) ?
97			portid : ipv4_l3fwd_out_if[ret[5]]);
98	dst_port[6] = (uint8_t) ((ret[6] < 0) ?
99			portid : ipv4_l3fwd_out_if[ret[6]]);
100	dst_port[7] = (uint8_t) ((ret[7] < 0) ?
101			portid : ipv4_l3fwd_out_if[ret[7]]);
102
103	if (dst_port[0] >= RTE_MAX_ETHPORTS ||
104			(enabled_port_mask & 1 << dst_port[0]) == 0)
105		dst_port[0] = portid;
106
107	if (dst_port[1] >= RTE_MAX_ETHPORTS ||
108			(enabled_port_mask & 1 << dst_port[1]) == 0)
109		dst_port[1] = portid;
110
111	if (dst_port[2] >= RTE_MAX_ETHPORTS ||
112			(enabled_port_mask & 1 << dst_port[2]) == 0)
113		dst_port[2] = portid;
114
115	if (dst_port[3] >= RTE_MAX_ETHPORTS ||
116			(enabled_port_mask & 1 << dst_port[3]) == 0)
117		dst_port[3] = portid;
118
119	if (dst_port[4] >= RTE_MAX_ETHPORTS ||
120			(enabled_port_mask & 1 << dst_port[4]) == 0)
121		dst_port[4] = portid;
122
123	if (dst_port[5] >= RTE_MAX_ETHPORTS ||
124			(enabled_port_mask & 1 << dst_port[5]) == 0)
125		dst_port[5] = portid;
126
127	if (dst_port[6] >= RTE_MAX_ETHPORTS ||
128			(enabled_port_mask & 1 << dst_port[6]) == 0)
129		dst_port[6] = portid;
130
131	if (dst_port[7] >= RTE_MAX_ETHPORTS ||
132			(enabled_port_mask & 1 << dst_port[7]) == 0)
133		dst_port[7] = portid;
134
135}
136
137static inline void
138get_ipv6_5tuple(struct rte_mbuf *m0, __m128i mask0,
139		__m128i mask1, union ipv6_5tuple_host *key)
140{
141	__m128i tmpdata0 = _mm_loadu_si128(
142			rte_pktmbuf_mtod_offset(m0, __m128i *,
143				sizeof(struct ether_hdr) +
144				offsetof(struct ipv6_hdr, payload_len)));
145
146	__m128i tmpdata1 = _mm_loadu_si128(
147			rte_pktmbuf_mtod_offset(m0, __m128i *,
148				sizeof(struct ether_hdr) +
149				offsetof(struct ipv6_hdr, payload_len) +
150				sizeof(__m128i)));
151
152	__m128i tmpdata2 = _mm_loadu_si128(
153			rte_pktmbuf_mtod_offset(m0, __m128i *,
154				sizeof(struct ether_hdr) +
155				offsetof(struct ipv6_hdr, payload_len) +
156				sizeof(__m128i) + sizeof(__m128i)));
157
158	key->xmm[0] = _mm_and_si128(tmpdata0, mask0);
159	key->xmm[1] = tmpdata1;
160	key->xmm[2] = _mm_and_si128(tmpdata2, mask1);
161}
162
163static inline __attribute__((always_inline)) void
164em_get_dst_port_ipv6x8(struct lcore_conf *qconf, struct rte_mbuf *m[8],
165		uint8_t portid, uint16_t dst_port[8])
166{
167	int32_t ret[8];
168	union ipv6_5tuple_host key[8];
169
170	get_ipv6_5tuple(m[0], mask1.x, mask2.x, &key[0]);
171	get_ipv6_5tuple(m[1], mask1.x, mask2.x, &key[1]);
172	get_ipv6_5tuple(m[2], mask1.x, mask2.x, &key[2]);
173	get_ipv6_5tuple(m[3], mask1.x, mask2.x, &key[3]);
174	get_ipv6_5tuple(m[4], mask1.x, mask2.x, &key[4]);
175	get_ipv6_5tuple(m[5], mask1.x, mask2.x, &key[5]);
176	get_ipv6_5tuple(m[6], mask1.x, mask2.x, &key[6]);
177	get_ipv6_5tuple(m[7], mask1.x, mask2.x, &key[7]);
178
179	const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
180			&key[4], &key[5], &key[6], &key[7]};
181
182	rte_hash_lookup_bulk(qconf->ipv6_lookup_struct, &key_array[0], 8, ret);
183
184	dst_port[0] = (uint8_t) ((ret[0] < 0) ?
185			portid : ipv6_l3fwd_out_if[ret[0]]);
186	dst_port[1] = (uint8_t) ((ret[1] < 0) ?
187			portid : ipv6_l3fwd_out_if[ret[1]]);
188	dst_port[2] = (uint8_t) ((ret[2] < 0) ?
189			portid : ipv6_l3fwd_out_if[ret[2]]);
190	dst_port[3] = (uint8_t) ((ret[3] < 0) ?
191			portid : ipv6_l3fwd_out_if[ret[3]]);
192	dst_port[4] = (uint8_t) ((ret[4] < 0) ?
193			portid : ipv6_l3fwd_out_if[ret[4]]);
194	dst_port[5] = (uint8_t) ((ret[5] < 0) ?
195			portid : ipv6_l3fwd_out_if[ret[5]]);
196	dst_port[6] = (uint8_t) ((ret[6] < 0) ?
197			portid : ipv6_l3fwd_out_if[ret[6]]);
198	dst_port[7] = (uint8_t) ((ret[7] < 0) ?
199			portid : ipv6_l3fwd_out_if[ret[7]]);
200
201	if (dst_port[0] >= RTE_MAX_ETHPORTS ||
202			(enabled_port_mask & 1 << dst_port[0]) == 0)
203		dst_port[0] = portid;
204
205	if (dst_port[1] >= RTE_MAX_ETHPORTS ||
206			(enabled_port_mask & 1 << dst_port[1]) == 0)
207		dst_port[1] = portid;
208
209	if (dst_port[2] >= RTE_MAX_ETHPORTS ||
210			(enabled_port_mask & 1 << dst_port[2]) == 0)
211		dst_port[2] = portid;
212
213	if (dst_port[3] >= RTE_MAX_ETHPORTS ||
214			(enabled_port_mask & 1 << dst_port[3]) == 0)
215		dst_port[3] = portid;
216
217	if (dst_port[4] >= RTE_MAX_ETHPORTS ||
218			(enabled_port_mask & 1 << dst_port[4]) == 0)
219		dst_port[4] = portid;
220
221	if (dst_port[5] >= RTE_MAX_ETHPORTS ||
222			(enabled_port_mask & 1 << dst_port[5]) == 0)
223		dst_port[5] = portid;
224
225	if (dst_port[6] >= RTE_MAX_ETHPORTS ||
226			(enabled_port_mask & 1 << dst_port[6]) == 0)
227		dst_port[6] = portid;
228
229	if (dst_port[7] >= RTE_MAX_ETHPORTS ||
230			(enabled_port_mask & 1 << dst_port[7]) == 0)
231		dst_port[7] = portid;
232
233}
234
235static inline __attribute__((always_inline)) uint16_t
236em_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
237		uint8_t portid)
238{
239	uint8_t next_hop;
240	struct ipv4_hdr *ipv4_hdr;
241	struct ipv6_hdr *ipv6_hdr;
242	uint32_t tcp_or_udp;
243	uint32_t l3_ptypes;
244
245	tcp_or_udp = pkt->packet_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
246	l3_ptypes = pkt->packet_type & RTE_PTYPE_L3_MASK;
247
248	if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV4)) {
249
250		/* Handle IPv4 headers.*/
251		ipv4_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv4_hdr *,
252				sizeof(struct ether_hdr));
253
254		next_hop = em_get_ipv4_dst_port(ipv4_hdr, portid,
255				qconf->ipv4_lookup_struct);
256
257		if (next_hop >= RTE_MAX_ETHPORTS ||
258				(enabled_port_mask & 1 << next_hop) == 0)
259			next_hop = portid;
260
261		return next_hop;
262
263	} else if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV6)) {
264
265		/* Handle IPv6 headers.*/
266		ipv6_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv6_hdr *,
267				sizeof(struct ether_hdr));
268
269		next_hop = em_get_ipv6_dst_port(ipv6_hdr, portid,
270				qconf->ipv6_lookup_struct);
271
272		if (next_hop >= RTE_MAX_ETHPORTS ||
273				(enabled_port_mask & 1 << next_hop) == 0)
274			next_hop = portid;
275
276		return next_hop;
277
278	}
279
280	return portid;
281}
282
283/*
284 * Buffer optimized handling of packets, invoked
285 * from main_loop.
286 */
287static inline void
288l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
289		uint8_t portid, struct lcore_conf *qconf)
290{
291	int32_t j;
292	uint16_t dst_port[MAX_PKT_BURST];
293
294	/*
295	 * Send nb_rx - nb_rx%8 packets
296	 * in groups of 8.
297	 */
298	int32_t n = RTE_ALIGN_FLOOR(nb_rx, 8);
299
300	for (j = 0; j < n; j += 8) {
301
302		uint32_t pkt_type =
303			pkts_burst[j]->packet_type &
304			pkts_burst[j+1]->packet_type &
305			pkts_burst[j+2]->packet_type &
306			pkts_burst[j+3]->packet_type &
307			pkts_burst[j+4]->packet_type &
308			pkts_burst[j+5]->packet_type &
309			pkts_burst[j+6]->packet_type &
310			pkts_burst[j+7]->packet_type;
311
312		uint32_t l3_type = pkt_type & RTE_PTYPE_L3_MASK;
313		uint32_t tcp_or_udp = pkt_type &
314			(RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
315
316		if (tcp_or_udp && (l3_type == RTE_PTYPE_L3_IPV4)) {
317
318			em_get_dst_port_ipv4x8(qconf, &pkts_burst[j], portid, &dst_port[j]);
319
320		} else if (tcp_or_udp && (l3_type == RTE_PTYPE_L3_IPV6)) {
321
322			em_get_dst_port_ipv6x8(qconf, &pkts_burst[j], portid, &dst_port[j]);
323
324		} else {
325			dst_port[j]   = em_get_dst_port(qconf, pkts_burst[j], portid);
326			dst_port[j+1] = em_get_dst_port(qconf, pkts_burst[j+1], portid);
327			dst_port[j+2] = em_get_dst_port(qconf, pkts_burst[j+2], portid);
328			dst_port[j+3] = em_get_dst_port(qconf, pkts_burst[j+3], portid);
329			dst_port[j+4] = em_get_dst_port(qconf, pkts_burst[j+4], portid);
330			dst_port[j+5] = em_get_dst_port(qconf, pkts_burst[j+5], portid);
331			dst_port[j+6] = em_get_dst_port(qconf, pkts_burst[j+6], portid);
332			dst_port[j+7] = em_get_dst_port(qconf, pkts_burst[j+7], portid);
333		}
334	}
335
336	for (; j < nb_rx; j++)
337		dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
338
339	send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
340
341}
342#endif /* __L3FWD_EM_SSE_HLM_H__ */
343