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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.
*/
#include <rte_mbuf.h>
#include "task_init.h"
#include "task_base.h"
#include "lconf.h"
#include "log.h"
#include "prox_port_cfg.h"
struct task_l2fwd {
struct task_base base;
uint8_t src_dst_mac[12];
uint32_t runtime_flags;
};
static int handle_l2fwd_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts)
{
struct task_l2fwd *task = (struct task_l2fwd *)tbase;
prox_rte_ether_hdr *hdr;
prox_rte_ether_addr mac;
if ((task->runtime_flags & (TASK_ARG_DST_MAC_SET|TASK_ARG_SRC_MAC_SET)) == (TASK_ARG_DST_MAC_SET|TASK_ARG_SRC_MAC_SET)) {
/* Source and Destination mac hardcoded */
for (uint16_t j = 0; j < n_pkts; ++j) {
hdr = rte_pktmbuf_mtod(mbufs[j], prox_rte_ether_hdr *);
rte_memcpy(hdr, task->src_dst_mac, sizeof(task->src_dst_mac));
}
} else {
for (uint16_t j = 0; j < n_pkts; ++j) {
hdr = rte_pktmbuf_mtod(mbufs[j], prox_rte_ether_hdr *);
if ((task->runtime_flags & (TASK_ARG_DO_NOT_SET_SRC_MAC|TASK_ARG_SRC_MAC_SET)) == 0) {
/* dst mac will be used as src mac */
prox_rte_ether_addr_copy(&hdr->d_addr, &mac);
}
if (task->runtime_flags & TASK_ARG_DST_MAC_SET)
prox_rte_ether_addr_copy((prox_rte_ether_addr *)&task->src_dst_mac[0], &hdr->d_addr);
else if ((task->runtime_flags & TASK_ARG_DO_NOT_SET_DST_MAC) == 0)
prox_rte_ether_addr_copy(&hdr->s_addr, &hdr->d_addr);
if (task->runtime_flags & TASK_ARG_SRC_MAC_SET) {
prox_rte_ether_addr_copy((prox_rte_ether_addr *)&task->src_dst_mac[6], &hdr->s_addr);
} else if ((task->runtime_flags & TASK_ARG_DO_NOT_SET_SRC_MAC) == 0) {
prox_rte_ether_addr_copy(&mac, &hdr->s_addr);
}
}
}
return task->base.tx_pkt(&task->base, mbufs, n_pkts, NULL);
}
static void init_task_l2fwd(struct task_base *tbase, struct task_args *targ)
{
struct task_l2fwd *task = (struct task_l2fwd *)tbase;
prox_rte_ether_addr *src_addr, *dst_addr;
/*
* The destination MAC of the outgoing packet is based on the config file:
* - 'dst mac=xx:xx:xx:xx:xx:xx' => the pre-configured mac will be used as dst mac
* - 'dst mac=packet' => the src mac of the incoming packet is used as dst mac
* - 'dst mac=no' => the dst mac is untouched
* - (default - no 'dst mac') => the src mac from the incoming packet is used as dst mac
*
* The source MAC of the outgoing packet is based on the config file:
* - 'src mac=xx:xx:xx:xx:xx:xx' => the pre-configured mac will be used as src mac
* - 'src mac=packet' => the dst mac of the incoming packet is used as src mac
* - 'src mac=hw' => the mac address of the tx port is used as src mac
* An error is returned if there are no physical tx ports
* - 'src mac=no' => the src mac is untouched
* - (default - no 'src mac') => if there is physical tx port, the mac of that port is used as src mac
* - (default - no 'src mac') if there are no physical tx ports the dst mac of the incoming packet
is used as src mac
*/
if (targ->flags & TASK_ARG_DST_MAC_SET) {
dst_addr = &targ->edaddr;
memcpy(&task->src_dst_mac[0], dst_addr, sizeof(*src_addr));
}
if (targ->flags & TASK_ARG_SRC_MAC_SET) {
src_addr = &targ->esaddr;
memcpy(&task->src_dst_mac[6], src_addr, sizeof(*dst_addr));
plog_info("\t\tCore %d: src mac set from config file\n", targ->lconf->id);
} else if ((targ->flags & TASK_ARG_DO_NOT_SET_SRC_MAC) == 0) {
if (targ->flags & TASK_ARG_HW_SRC_MAC)
PROX_PANIC(targ->nb_txports == 0, "src mac set to hw but no tx port\n");
if (targ->nb_txports) {
src_addr = &prox_port_cfg[task->base.tx_params_hw.tx_port_queue[0].port].eth_addr;
targ->flags |= TASK_ARG_SRC_MAC_SET;
plog_info("\t\tCore %d: src mac set from port\n", targ->lconf->id);
memcpy(&task->src_dst_mac[6], src_addr, sizeof(*dst_addr));
}
}
task->runtime_flags = targ->flags;
}
static struct task_init task_init_l2fwd = {
.mode_str = "l2fwd",
.init = init_task_l2fwd,
.handle = handle_l2fwd_bulk,
.flag_features = TASK_FEATURE_NEVER_DISCARDS|TASK_FEATURE_TXQ_FLAGS_NOOFFLOADS,
.size = sizeof(struct task_l2fwd),
};
__attribute__((constructor)) static void reg_task_l2fwd(void)
{
reg_task(&task_init_l2fwd);
}
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