summaryrefslogtreecommitdiffstats
path: root/VNFs/DPPD-PROX/handle_qinq_decap6.c
blob: 77bacb754ba1b1e0f1bcfab5ac7fcb4caaeee38e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
/*
// Copyright (c) 2010-2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/

#include <rte_cycles.h>
#include <rte_table_hash.h>

#include "prox_lua.h"
#include "prox_lua_types.h"

#include "handle_qinq_encap6.h"
#include "log.h"
#include "lconf.h"
#include "task_init.h"
#include "task_base.h"
#include "tx_pkt.h"
#include "defines.h"
#include "pkt_prototypes.h"
#include "prox_assert.h"
#include "hash_utils.h"
#include "task_base.h"
#include "prefetch.h"
#include "hash_entry_types.h"
#include "prox_cfg.h"
#include "log.h"
#include "quit.h"
#include "prox_shared.h"
#include "prox_compat.h"

/* Packets must all be IPv6, always store QinQ tags for lookup (not configurable) */
struct task_qinq_decap6 {
	struct task_base                base;
	struct rte_table_hash           *cpe_table;
	uint16_t                        *user_table;
	uint32_t                        bucket_index;
	struct ether_addr 		edaddr;
	struct rte_lpm6                 *rte_lpm6;
	void*                           period_data; /* used if using dual stack*/
	void (*period_func)(void* data);
	uint64_t                        cpe_timeout;
};

void update_arp_entries6(void* data);

static void init_task_qinq_decap6(struct task_base *tbase, struct task_args *targ)
{
	struct task_qinq_decap6 *task = (struct task_qinq_decap6 *)tbase;
	const int socket_id = rte_lcore_to_socket_id(targ->lconf->id);

	task->edaddr = targ->edaddr;
	task->cpe_table = targ->cpe_table;
	task->cpe_timeout = msec_to_tsc(targ->cpe_table_timeout_ms);

	if (targ->cpe_table_timeout_ms) {
		if (targ->lconf->period_func) {
			task->period_func = targ->lconf->period_func;
			task->period_data = targ->lconf->period_data;
		}
		targ->lconf->period_func = update_arp_entries6;
		targ->lconf->period_data = tbase;
		targ->lconf->period_timeout = msec_to_tsc(500) / NUM_VCPES;
	}

	task->user_table = prox_sh_find_socket(socket_id, "user_table");
	if (!task->user_table) {
		PROX_PANIC(!strcmp(targ->user_table, ""), "No user table defined\n");
		int ret = lua_to_user_table(prox_lua(), GLOBAL, targ->user_table, socket_id, &task->user_table);
		PROX_PANIC(ret, "Failed to create user table from config:\n%s\n", get_lua_to_errors());
		prox_sh_add_socket(socket_id, "user_table", task->user_table);
	}

	struct lpm6 *lpm = prox_sh_find_socket(socket_id, "lpm6");
	if (!lpm) {
		struct lpm6 *lpm6;
		int ret;

		ret = lua_to_lpm6(prox_lua(), GLOBAL, "lpm6", socket_id, &lpm6);
		PROX_PANIC(ret, "Failed to read lpm6 from config:\n%s\n", get_lua_to_errors());
		prox_sh_add_socket(socket_id, "lpm6", lpm6);
	}
	task->rte_lpm6 = lpm->rte_lpm6;
}

static void early_init(struct task_args *targ)
{
	if (!targ->cpe_table) {
		init_cpe6_table(targ);
	}
}

static inline uint8_t handle_qinq_decap6(struct task_qinq_decap6 *task, struct rte_mbuf *mbuf)
{
	struct qinq_hdr *pqinq = rte_pktmbuf_mtod(mbuf, struct qinq_hdr *);
	struct ipv6_hdr *pip6 = (struct ipv6_hdr *)(pqinq + 1);

	uint16_t svlan = pqinq->svlan.vlan_tci & 0xFF0F;
	uint16_t cvlan = pqinq->cvlan.vlan_tci & 0xFF0F;

	struct cpe_data entry;
	entry.mac_port_8bytes = *((uint64_t *)(((uint8_t *)pqinq) + 5)) << 16;
	entry.qinq_svlan = svlan;
	entry.qinq_cvlan = cvlan;
	entry.user = task->user_table[PKT_TO_LUTQINQ(svlan, cvlan)];
	entry.tsc = rte_rdtsc() + task->cpe_timeout;

	int key_found = 0;
	void* entry_in_hash = NULL;
	int ret = prox_rte_table_add(task->cpe_table, pip6->src_addr, &entry, &key_found, &entry_in_hash);

	if (unlikely(ret)) {
		plogx_err("Failed to add key " IPv6_BYTES_FMT "\n", IPv6_BYTES(pip6->src_addr));
		return OUT_DISCARD;
	}

	pqinq = (struct qinq_hdr *)rte_pktmbuf_adj(mbuf, 2 * sizeof(struct vlan_hdr));
	PROX_ASSERT(pqinq);
	pqinq->ether_type = ETYPE_IPv6;
	// Dest MAC addresses
	ether_addr_copy(&task->edaddr, &pqinq->d_addr);
	return 0;
}

static int handle_qinq_decap6_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts)
{
	struct task_qinq_decap6 *task = (struct task_qinq_decap6 *)tbase;
	uint8_t out[MAX_PKT_BURST];
	uint16_t j;

	prefetch_first(mbufs, n_pkts);

	for (j = 0; j + PREFETCH_OFFSET < n_pkts; ++j) {
#ifdef PROX_PREFETCH_OFFSET
		PREFETCH0(mbufs[j + PREFETCH_OFFSET]);
		PREFETCH0(rte_pktmbuf_mtod(mbufs[j + PREFETCH_OFFSET - 1], void *));
#endif
		out[j] = handle_qinq_decap6(task, mbufs[j]);
	}
#ifdef PROX_PREFETCH_OFFSET
	PREFETCH0(rte_pktmbuf_mtod(mbufs[n_pkts - 1], void *));
	for (; j < n_pkts; ++j) {
		out[j] = handle_qinq_decap6(task, mbufs[j]);
	}
#endif

	return task->base.tx_pkt(&task->base, mbufs, n_pkts, out);
}

void update_arp_entries6(void* data)
{
	uint64_t cur_tsc = rte_rdtsc();
	struct task_qinq_decap6 *task = (struct task_qinq_decap6 *)data;

	struct cpe_data *entries[4] = {0};
	void *key[4] = {0};
	uint64_t n_buckets = get_bucket(task->cpe_table, task->bucket_index, key, (void**)entries);

	for (uint8_t i = 0; i < 4 && entries[i]; ++i) {
		if (entries[i]->tsc < cur_tsc) {
			int key_found = 0;
			void* entry = 0;
			prox_rte_table_delete(task->cpe_table, key[i], &key_found, entry);
		}
	}

	task->bucket_index++;
	task->bucket_index &= (n_buckets - 1);

	if (task->period_func) {
		task->period_func(task->period_data);
	}
}

static struct task_init task_init_qinq_decap6 = {
	.mode = QINQ_DECAP6,
	.mode_str = "qinqdecapv6",
	.early_init = early_init,
	.init = init_task_qinq_decap6,
	.handle = handle_qinq_decap6_bulk,
	.size = sizeof(struct task_qinq_decap6)
};

__attribute__((constructor)) static void reg_task_qinq_decap6(void)
{
	reg_task(&task_init_qinq_decap6);
}