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/*
// 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.
*/
#ifndef _HANDLE_QINQ_ENCAP4_H_
#define _HANDLE_QINQ_ENCAP4_H_
#include <rte_ip.h>
#include <rte_ether.h>
#include "log.h"
#include "prox_assert.h"
#include "etypes.h"
#include "mpls.h"
#include "task_init.h"
struct task_qinq_encap4 {
struct task_base base;
struct rte_table_hash *cpe_table;
uint16_t qinq_tag;
uint64_t src_mac[PROX_MAX_PORTS];
int offload_crc;
uint8_t runtime_flags;
uint8_t *dscp;
uint64_t keys[64];
struct rte_mbuf* fake_packets[64];
uint64_t cpe_timeout;
#ifdef ENABLE_EXTRA_USER_STATISTICS
uint32_t *stats_per_user;
uint32_t n_users;
#endif
};
struct qinq_gre_entry {
uint16_t svlan;
uint16_t cvlan;
uint32_t gre_id;
uint32_t user;
uint32_t rss; // RSS based on Toeplitz_hash(svlan and cvlan)
};
struct qinq_gre_map {
uint32_t count;
struct qinq_gre_entry entries[0];
};
struct qinq_gre_map *get_qinq_gre_map(struct task_args *targ);
struct task_args;
struct prox_shared;
void init_qinq_gre_table(struct task_args *targ, struct qinq_gre_map *qinq_gre_map);
void init_qinq_gre_hash(struct task_args *targ, struct qinq_gre_map *qinq_gre_map);
void init_cpe4_table(struct task_args *targ);
void init_cpe4_hash(struct task_args *targ);
static inline uint8_t mpls_untag(struct rte_mbuf *mbuf)
{
struct ether_hdr *peth = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
const uint16_t eth_type = peth->ether_type;
if (eth_type == ETYPE_MPLSU) {
struct ether_hdr *pneweth = (struct ether_hdr *)rte_pktmbuf_adj(mbuf, 4);
const struct mpls_hdr *mpls = (const struct mpls_hdr *)(peth + 1);
if (mpls->bos == 0) {
// Double MPLS tag
pneweth = (struct ether_hdr *)rte_pktmbuf_adj(mbuf, 4);
PROX_ASSERT(pneweth);
}
const struct ipv4_hdr *pip = (const struct ipv4_hdr *)(pneweth + 1);
if ((pip->version_ihl >> 4) == 4) {
pneweth->ether_type = ETYPE_IPv4;
return 1;
}
else if ((pip->version_ihl >> 4) == 6) {
pneweth->ether_type = ETYPE_IPv6;
return 1;
}
plog_info("Error removing MPLS: unexpected IP version: %d\n", pip->version_ihl >> 4);
return 0;
}
if (eth_type != ETYPE_LLDP) {
plog_info("Error Removing MPLS: ether_type = %#06x\n", eth_type);
}
return 0;
}
#endif /* _HANDLE_QINQ_ENCAP4_H_ */
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