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control.c
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/*
* Packet-journey userland router which uses DPDK for its fastpath switching
*
*/
/*
* Copyright (c) 2015 Gandi S.A.S. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Parts from:
*
* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <spawn.h>
#include <rte_version.h>
#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_log.h>
#include <rte_ip.h>
#include <rte_lpm.h>
#include <rte_lpm6.h>
#include <rte_ethdev.h>
#include <cmdline_parse.h>
#include <cmdline_parse_ipaddr.h>
#include <libnetlink.h>
#include <libneighbour.h>
#include "common.h"
#include "control.h"
#include "routing.h"
#include "config.h"
#define CTRL_CBK_MAX_SIZE 256
#ifndef __DECONST
#define __DECONST(type, var) ((type)(uintptr_t)(const void*)(var))
#endif
#define IN6ADDR_BROADCAST { { { 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255 } } }
extern char** environ;
struct control_handle {
int32_t socket_id;
};
struct handle_res {
struct netl_handle* netl_h;
int32_t socket_id;
};
struct lpm_stats_t lpm4_stats[NB_SOCKETS];
struct lpm_stats_t lpm6_stats[NB_SOCKETS];
static const char* oper_states[] = {
"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
"TESTING", "DORMANT", "UP"};
static void
print_operstate(FILE* f, __u8 state)
{
if (state >= sizeof(oper_states) / sizeof(oper_states[0]))
fprintf(f, "state %#x ", state);
else
fprintf(f, "state %s ", oper_states[state]);
}
static void
apply_rate_limit_ipv6(struct in6_addr* nexthop,
uint8_t nexthop_id,
int socket_id)
{
uint32_t i;
// apply rate limit rule if next hop neighbor is in the table
for (i = 0; i < NEI_NUM_ENTRIES; i++) {
// if addresses match
if (!memcmp(&rlimit6_lookup_table[socket_id][i].addr, nexthop,
sizeof(struct in6_addr))) {
rlimit6_max[socket_id][nexthop_id] =
rlimit6_lookup_table[socket_id][i].num;
break;
}
}
}
int control_add_ipv4_local_entry(struct in_addr* nexthop,
struct in_addr* saddr,
uint8_t depth,
uint32_t port_id,
int32_t socket_id);
int control_add_ipv6_local_entry(struct in6_addr* nexthop,
struct in6_addr* saddr,
uint8_t depth,
uint32_t port_id,
int32_t socket_id);
static int
route4(__rte_unused struct rtmsg* route,
route_action_t action,
struct in_addr* addr,
uint8_t depth,
struct in_addr* nexthop,
uint8_t type,
void* args)
{
// If route add
// lookup next hop in neighbor table ipv4
// if not lookup
// create next hop, with flag invalid and addr = nexthop
// nexthopid = last id
//
// register new route in lpm, with nexthop id
// increment refcount in neighbor
// If route delete
// lookup next hop in neighbor table ipv4
// if not lookup
// then WTF TABLE CORRUPTED
// remove route from lpm
// decrement refcount in neighbor
// if refcount reached 0
// then flag entry empty
struct control_handle* handle = args;
assert(handle != NULL);
uint16_t nexthop_id;
int s;
int32_t socket_id = handle->socket_id;
struct in_addr blackhole_addr4 = {rte_be_to_cpu_32(INADDR_ANY)};
char buf[INET6_ADDRSTRLEN];
if (type == RTN_BLACKHOLE) {
nexthop = &blackhole_addr4;
}
if (depth == 0) {
addr = &blackhole_addr4;
}
if (action == ROUTE_ADD) {
RTE_LOG(INFO, PKTJ_CTRL1, "adding an ipv4 route %s with hop %s type %d\n",
inet_ntop(AF_INET, addr, buf, INET6_ADDRSTRLEN),
inet_ntop(AF_INET, nexthop, buf, INET6_ADDRSTRLEN),
type);
// lookup nexthop
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id],
nexthop, &nexthop_id, 0);
if (s < 0) {
s = neighbor4_add_nexthop(neighbor4_struct[socket_id],
nexthop, &nexthop_id,
NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a "
"nexthop during "
"route adding...\n");
return -1;
}
}
if (depth) {
s = rte_lpm_add(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), depth,
nexthop_id);
if (s < 0) {
lpm4_stats[socket_id].nb_add_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a route in "
"lpm during route "
"adding...\n");
return -1;
}
lpm4_stats[socket_id].nb_add_ok++;
}
else { // default route
s = neighbor4_set_nexthop(neighbor4_struct[socket_id], nexthop, 0, NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add "
"default route \n");
return -1;
}
neighbor4_copy_lladdr_port(neighbor4_struct[socket_id], nexthop_id, 0);
}
neighbor4_refcount_incr(neighbor4_struct[socket_id],
nexthop_id);
}
if (action == ROUTE_DELETE) {
RTE_LOG(INFO, PKTJ_CTRL1, "deleting an ipv4 route %s with hop %s type %d\n",
inet_ntop(AF_INET, addr, buf, INET6_ADDRSTRLEN),
inet_ntop(AF_INET, nexthop, buf, INET6_ADDRSTRLEN),
type);
if (depth == 0) {
// remove default route
struct in_addr default_ip = {INADDR_BROADCAST};
s = neighbor4_set_nexthop(neighbor4_struct[socket_id], &default_ip, 0, NEI_ACTION_DROP);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to remove "
"default route \n");
return -1;
}
}
// lookup nexthop
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id],
nexthop, &nexthop_id, 0);
if (s < 0) {
RTE_LOG(INFO, PKTJ_CTRL1,
"failed to find nexthop "
"during route deletion...\n");
return -1;
}
s = rte_lpm_delete(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), depth);
if (s < 0) {
lpm4_stats[socket_id].nb_del_ko++;
RTE_LOG(INFO, PKTJ_CTRL1, "failed to delete route...\n");
return -1;
}
neighbor4_refcount_decr(neighbor4_struct[socket_id],
nexthop_id);
lpm4_stats[socket_id].nb_del_ok++;
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "route ope success\n");
return 0;
}
static int
route6(__rte_unused struct rtmsg* route,
route_action_t action,
struct in6_addr* addr,
uint8_t depth,
struct in6_addr* nexthop,
uint8_t type,
void* args)
{
// If route add
// lookup next hop in neighbor table ipv4
// if not lookup
// create next hop, with flag invalid and addr = nexthop
// nexthopid = last id
//
// register new route in lpm, with nexthop id
// increment refcount in neighbor
// If route delete
// lookup next hop in neighbor table ipv4
// if not lookup
// then WTF TABLE CORRUPTED
// remove route from lpm
// decrement refcount in neighbor
// if refcount reached 0
// then flag entry empty
struct control_handle* handle = args;
assert(handle != NULL);
uint16_t nexthop_id;
int s;
int32_t socket_id = handle->socket_id;
static struct in6_addr blackhole_addr6 = IN6ADDR_ANY_INIT;
if (type == RTN_BLACKHOLE) {
nexthop = &blackhole_addr6;
}
if (depth == 0) {
addr = &blackhole_addr6;
}
if (action == ROUTE_ADD) {
RTE_LOG(DEBUG, PKTJ_CTRL1, "adding an ipv6 route...\n");
// lookup nexthop
s = neighbor6_lookup_nexthop(neighbor6_struct[socket_id],
nexthop, &nexthop_id, 0);
if (s < 0) {
s = neighbor6_add_nexthop(neighbor6_struct[socket_id],
nexthop, &nexthop_id,
NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a "
"nexthop during "
"route adding...\n");
return -1;
}
// apply rate limit rule if next hop neighbor is in the
// table
apply_rate_limit_ipv6(nexthop, nexthop_id, socket_id);
}
if (depth) {
s = rte_lpm6_add(ipv6_pktj_lookup_struct[socket_id],
addr->s6_addr, depth, nexthop_id);
if (s < 0) {
lpm6_stats[socket_id].nb_add_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a route in "
"lpm during route "
"adding...\n");
return -1;
}
lpm6_stats[socket_id].nb_add_ok++;
}
else { // default route
s = neighbor6_set_nexthop(neighbor6_struct[socket_id], nexthop, 0, NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add "
"default route \n");
return -1;
}
neighbor6_copy_lladdr_port(neighbor6_struct[socket_id], nexthop_id, 0);
}
neighbor6_refcount_incr(neighbor6_struct[socket_id],
nexthop_id);
}
if (action == ROUTE_DELETE) {
RTE_LOG(DEBUG, PKTJ_CTRL1, "deleting an ipv6 route...\n");
if (depth == 0) {
// remove default route
struct in6_addr default_ip6 = IN6ADDR_BROADCAST;
s = neighbor6_set_nexthop(neighbor6_struct[socket_id], &default_ip6, 0, NEI_ACTION_DROP);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to remove "
"default route \n");
return -1;
}
}
// lookup nexthop
s = neighbor6_lookup_nexthop(neighbor6_struct[socket_id],
nexthop, &nexthop_id, 0);
if (s < 0) {
RTE_LOG(INFO, PKTJ_CTRL1,
"failed to find nexthop "
"during route deletion...\n");
return -1;
}
s = rte_lpm6_delete(ipv6_pktj_lookup_struct[socket_id],
addr->s6_addr, depth);
if (s < 0) {
lpm6_stats[socket_id].nb_del_ko++;
RTE_LOG(INFO, PKTJ_CTRL1, "failed to delete route...\n");
return -1;
}
neighbor6_refcount_decr(neighbor6_struct[socket_id],
nexthop_id);
lpm6_stats[socket_id].nb_del_ok++;
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "route ope success\n");
return 0;
}
static int
neighbor4(neighbor_action_t action,
__s32 port_id,
struct in_addr* addr,
struct ether_addr* lladdr,
__u8 flags,
__rte_unused __u16 vlan_id,
void* args)
{
// if port_id is not handled
// ignore, return immediatly
// if neighbor add
// lookup neighbor
// if exists
// update lladdr, set flag as REACHABLE/STALE/DELAY
// else
// // This should not happen
// insert new nexthop
// set insert date=now, refcount = 0, flag=REACHABLE/STALE/DELAY
// if neighbor delete
// lookup neighbor
// if exists
// if refcount != 0
// set nexthop as invalid
// else
// set flag empty
// else
// do nothing
// // this should not happen
struct control_handle* handle = args;
assert(handle != NULL);
int s;
uint16_t nexthop_id;
uint32_t find_id;
int32_t socket_id = handle->socket_id;
char ipbuf[INET_ADDRSTRLEN];
assert(neighbor4_struct != NULL);
if (addr == NULL)
return -1;
inet_ntop(AF_INET, addr, ipbuf, INET_ADDRSTRLEN);
if (action == NEIGHBOR_ADD) {
if (lladdr == NULL)
return -1;
char ibuf[IFNAMSIZ];
unsigned kni_vlan;
if_indextoname(port_id, ibuf);
s = sscanf(ibuf, "dpdk%10u.%10u", &port_id, &kni_vlan);
if (s <= 0) {
RTE_LOG(INFO, PKTJ_CTRL1,
"received a neighbor "
"announce for an unmanaged "
"iface %s\n",
ibuf);
return -1;
}
if (flags != NUD_REACHABLE && flags != NUD_FAILED
&& flags != NUD_PERMANENT && flags != NUD_STALE) {
RTE_LOG(INFO, PKTJ_CTRL1,
"don't handle state of neighbor4 "
"(state %d, %s)...\n",
flags, ipbuf);
return -1;
}
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id], addr,
&nexthop_id, 0);
if (s < 0) {
RTE_LOG(DEBUG, PKTJ_CTRL1,
"adding ipv4 neighbor %s with port %s "
"vlan_id %d...\n",
ipbuf, ibuf, kni_vlan);
s = neighbor4_add_nexthop(neighbor4_struct[socket_id],
addr, &nexthop_id,
NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a "
"nexthop in neighbor "
"table...\n");
return -1;
}
if (rte_lpm_lookup(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr),
&find_id) == 0) {
s = rte_lpm_add(
ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), 32,
nexthop_id);
if (s < 0) {
lpm4_stats[socket_id].nb_add_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a route in "
"lpm during neighbor "
"adding...\n");
return -1;
}
lpm4_stats[socket_id].nb_add_ok++;
}
}
if (flags == NUD_FAILED) {
neighbor4_set_action(neighbor4_struct[socket_id],
nexthop_id, NEI_ACTION_KNI);
} else {
neighbor4_set_action(neighbor4_struct[socket_id],
nexthop_id, NEI_ACTION_FWD);
}
RTE_LOG(DEBUG, PKTJ_CTRL1,
"set neighbor4 with port_id %d state %d\n", port_id,
flags);
neighbor4_set_lladdr_port(neighbor4_struct[socket_id],
nexthop_id, &ports_eth_addr[port_id],
lladdr, port_id, kni_vlan);
neighbor4_set_state(neighbor4_struct[socket_id], nexthop_id,
flags);
// update default route neighbor if required
neighbor4_lookup_nexthop(neighbor4_struct[socket_id], addr,
&nexthop_id, -1);
if (nexthop_id == 0) {
neighbor4_set_lladdr_port(neighbor4_struct[socket_id],
nexthop_id, &ports_eth_addr[port_id],
lladdr, port_id, kni_vlan);
neighbor4_set_state(neighbor4_struct[socket_id], nexthop_id,
flags);
}
}
if (action == NEIGHBOR_DELETE) {
if (flags != NUD_FAILED && flags != NUD_STALE) {
RTE_LOG(
DEBUG, PKTJ_CTRL1,
"neighbor4 delete ope failed, bad NUD state: %d \n",
flags);
return -1;
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "deleting ipv4 neighbor...\n");
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id], addr,
&nexthop_id, 0);
if (s < 0) {
RTE_LOG(INFO, PKTJ_CTRL1,
"failed to find a nexthop to "
"delete in neighbor "
"table...\n");
return 0;
}
neighbor4_delete(neighbor4_struct[socket_id], nexthop_id);
// FIXME not thread safe
if (neighbor4_struct[socket_id]
->entries.t4[nexthop_id]
.neighbor.refcnt == 0) {
s = rte_lpm_delete(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), 32);
if (s < 0) {
lpm4_stats[socket_id].nb_del_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to delete route...\n");
return -1;
}
lpm4_stats[socket_id].nb_del_ok++;
}
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "neigh %s ope success\n", ipbuf);
return 0;
}
static int
neighbor6(neighbor_action_t action,
int32_t port_id,
struct in6_addr* addr,
struct ether_addr* lladdr,
uint8_t flags,
__rte_unused uint16_t vlan_id,
void* args)
{
// if port_id is not handled
// ignore, return immediatly
// if neighbor add
// lookup neighbor
// if exists
// update lladdr, set flag as REACHABLE/STALE/DELAY
// else
// // This should not happen
// insert new nexthop
// set insert date=now, refcount = 0, flag=REACHABLE/STALE/DELAY
// if neighbor delete
// lookup neighbor
// if exists
// if refcount != 0
// set nexthop as invalid
// else
// set flag empty
// else
// do nothing
// // this should not happen
struct control_handle* handle = args;
assert(handle != NULL);
int s;
uint16_t nexthop_id;
lpm6_neigh find_id;
int32_t socket_id = handle->socket_id;
char ipbuf[INET6_ADDRSTRLEN];
assert(neighbor6_struct != NULL);
if (addr == NULL)
return -1;
inet_ntop(AF_INET6, addr, ipbuf, INET6_ADDRSTRLEN);
if (action == NEIGHBOR_ADD) {
if (lladdr == NULL)
return -1;
char ibuf[IFNAMSIZ];
unsigned kni_vlan;
if_indextoname(port_id, ibuf);
s = sscanf(ibuf, "dpdk%10u.%10u", &port_id, &kni_vlan);
if (s <= 0) {
RTE_LOG(INFO, PKTJ_CTRL1,
"received a neighbor "
"announce for an unmanaged "
"iface %s\n",
ibuf);
return -1;
}
if (flags != NUD_REACHABLE && flags != NUD_FAILED
&& flags != NUD_PERMANENT) {
RTE_LOG(INFO, PKTJ_CTRL1,
"don't handle state of neighbor6 "
"(state %d, %s)...\n",
flags, ipbuf);
return -1;
}
s = neighbor6_lookup_nexthop(neighbor6_struct[socket_id], addr,
&nexthop_id, 0);
if (s < 0) {
RTE_LOG(
DEBUG, PKTJ_CTRL1,
"adding ipv6 neighbor %s with port_id %d "
"vlan_id %d...\n",
ipbuf, port_id, kni_vlan);
s = neighbor6_add_nexthop(neighbor6_struct[socket_id],
addr, &nexthop_id,
NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a "
"nexthop in neighbor "
"table...\n");
return -1;
}
// apply rate limit rule if next hop neighbor is in the
// table
apply_rate_limit_ipv6(addr, nexthop_id, socket_id);
if (rte_lpm6_lookup(ipv6_pktj_lookup_struct[socket_id],
addr->s6_addr, &find_id) == 0) {
s = rte_lpm6_add(
ipv6_pktj_lookup_struct[socket_id],
addr->s6_addr, 128, nexthop_id);
if (s < 0) {
lpm6_stats[socket_id].nb_add_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a route in "
"lpm during neighbor "
"adding...\n");
return -1;
}
lpm6_stats[socket_id].nb_add_ok++;
}
}
if (flags == NUD_FAILED) {
neighbor6_set_action(neighbor6_struct[socket_id],
nexthop_id, NEI_ACTION_KNI);
} else {
neighbor6_set_action(neighbor6_struct[socket_id],
nexthop_id, NEI_ACTION_FWD);
}
RTE_LOG(DEBUG, PKTJ_CTRL1,
"set neighbor6 with port_id %d state %d \n", port_id,
flags);
neighbor6_set_lladdr_port(neighbor6_struct[socket_id],
nexthop_id, &ports_eth_addr[port_id],
lladdr, port_id, kni_vlan);
neighbor6_set_state(neighbor6_struct[socket_id], nexthop_id,
flags);
// update default route neighbor if required
neighbor6_lookup_nexthop(neighbor6_struct[socket_id], addr,
&nexthop_id, -1);
if (nexthop_id == 0) {
neighbor6_set_lladdr_port(neighbor6_struct[socket_id],
nexthop_id, &ports_eth_addr[port_id],
lladdr, port_id, kni_vlan);
neighbor6_set_state(neighbor6_struct[socket_id], nexthop_id,
flags);
}
}
if (action == NEIGHBOR_DELETE) {
if (flags != NUD_FAILED && flags != NUD_STALE) {
RTE_LOG(
DEBUG, PKTJ_CTRL1,
"neighbor6 delete ope failed, bad NUD state: %d \n",
flags);
return -1;
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "deleting ipv6 neighbor...\n");
s = neighbor6_lookup_nexthop(neighbor6_struct[socket_id], addr,
&nexthop_id, 0);
if (s < 0) {
RTE_LOG(INFO, PKTJ_CTRL1,
"failed to find a nexthop to "
"delete in neighbor "
"table...\n");
return 0;
}
neighbor6_delete(neighbor6_struct[socket_id], nexthop_id);
// FIXME not thread safe
if (neighbor6_struct[socket_id]
->entries.t6[nexthop_id]
.neighbor.refcnt == 0) {
s = rte_lpm6_delete(ipv6_pktj_lookup_struct[socket_id],
addr->s6_addr, 128);
if (s < 0) {
lpm6_stats[socket_id].nb_del_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to delete route...\n");
return -1;
}
// reset rate limit for this id
rlimit6_max[socket_id][nexthop_id] = UINT32_MAX;
lpm6_stats[socket_id].nb_del_ok++;
}
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "neigh %s ope success\n", ipbuf);
return 0;
}
static int
addr4(__rte_unused addr_action_t action,
int32_t port_id,
struct in_addr* addr,
uint8_t prefixlen,
void* args)
{
char buf[255];
char ibuf[IFNAMSIZ];
struct control_handle* handle = args;
assert(handle != NULL);
int32_t socket_id = handle->socket_id;
if_indextoname(port_id, ibuf);
sscanf(ibuf, "dpdk%10d", &port_id);
RTE_LOG(DEBUG, PKTJ_CTRL1, "addr4 port=%s %s/%d with port_id %d\n",
ibuf, inet_ntop(AF_INET, addr, buf, 255), prefixlen, port_id);
control_add_ipv4_local_entry(addr, addr, prefixlen, port_id, socket_id);
return 0;
}
static int
addr6(__rte_unused addr_action_t action,
int32_t port_id,
struct in6_addr* addr,
uint8_t prefixlen,
void* args)
{
char buf[255];
char ibuf[IFNAMSIZ];
struct control_handle* handle = args;
assert(handle != NULL);
int32_t socket_id = handle->socket_id;
if_indextoname(port_id, ibuf);
sscanf(ibuf, "dpdk%10d", &port_id);
RTE_LOG(DEBUG, PKTJ_CTRL1, "addr6 port=%s %s/%d with port_id %d\n",
ibuf, inet_ntop(AF_INET6, addr, buf, 255), prefixlen, port_id);
control_add_ipv6_local_entry(addr, addr, prefixlen, port_id, socket_id);
// multicast ipv6
struct in6_addr mc_linklocal = IN6ADDR_ANY_INIT;
mc_linklocal.s6_addr[0] = 0xff;
mc_linklocal.s6_addr[1] = 0x02;
control_add_ipv6_local_entry(&mc_linklocal, &mc_linklocal, 16, port_id,
socket_id);
return 0;
}
static int
eth_link(link_action_t action,
int ifid,
struct ether_addr* lladdr,
int mtu,
const char* name,
oper_state_t state,
uint16_t vlanid,
__rte_unused void* args)
{
char action_buf[4];
char ebuf[32];
unsigned l, i;
if (action == LINK_ADD) {
memcpy(action_buf, "add", 4);
} else {
memcpy(action_buf, "del", 4);
}
l = 0;
for (i = 0; i < sizeof(*lladdr); i++) {
if (i == 0) {
snprintf(ebuf + l, sizeof(ebuf) - l, "%02x",
lladdr->addr_bytes[i]);
l += 2;
} else {
snprintf(ebuf + l, sizeof(ebuf) - l, ":%02x",
lladdr->addr_bytes[i]);
l += 3;
}
}
if (l >= 32)
l = 31;
ebuf[l] = '\0';
fprintf(stdout, "%d: link %s %s mtu %d label %s vlan %d ", ifid,
action_buf, ebuf, mtu, name, vlanid);
print_operstate(stdout, state);
fprintf(stdout, "\n");
fflush(stdout);
return 0;
}
static int
add_invalid_neighbor4(neighbor_struct_t* neighbor_struct,
struct in_addr* ip,
uint16_t dst_port)
{
struct ether_addr invalid_mac = {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
uint16_t nexthop_id;
if (neighbor4_add_nexthop(neighbor_struct, ip, &nexthop_id,
NEI_ACTION_DROP) < 0) {
return -1;
}
neighbor4_refcount_incr(neighbor_struct, nexthop_id);
neighbor4_set_lladdr_port(neighbor_struct, nexthop_id, &invalid_mac,
&invalid_mac, dst_port, -1);
return 0;
}
static int
add_invalid_neighbor6(neighbor_struct_t* neighbor_struct,
struct in6_addr* ip,
uint16_t dst_port)
{
struct ether_addr invalid_mac = {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
uint16_t nexthop_id;
if (neighbor6_add_nexthop(neighbor_struct, ip, &nexthop_id,
NEI_ACTION_DROP) < 0) {
return -1;
}
neighbor6_refcount_incr(neighbor_struct, nexthop_id);
neighbor6_set_lladdr_port(neighbor_struct, nexthop_id, &invalid_mac,
&invalid_mac, dst_port, -1);
return 0;
}
static void
netl_log(const char *msg, uint32_t lvl)
{
rte_log(lvl, RTE_LOGTYPE_PKTJ_CTRL1, "PKTJ_CRTL1: %s\n", msg);
}
void *
control_init(int32_t socket_id, unsigned events)
{
struct netl_handle* netl_h;
struct handle_res* res;
netl_h = netl_create(events);
if (netl_h == NULL) {
RTE_LOG(ERR, PKTJ_CTRL1, "Couldn't initialize netlink socket");
goto err;
}
neighbor4_struct[socket_id] = nei_create(socket_id);
if (neighbor4_struct[socket_id] == NULL) {
RTE_LOG(ERR, PKTJ_CTRL1,
"Couldn't initialize neighbor4 struct");
goto err;
}
neighbor6_struct[socket_id] = nei_create(socket_id);
if (neighbor6_struct[socket_id] == NULL) {
RTE_LOG(ERR, PKTJ_CTRL1,
"Couldn't initialize neighbor6 struct");
goto err;
}
netl_h->cb.addr4 = addr4;
netl_h->cb.addr6 = addr6;
netl_h->cb.neighbor4 = neighbor4;
netl_h->cb.neighbor6 = neighbor6;
netl_h->cb.route4 = route4;
netl_h->cb.route6 = route6;
netl_h->cb.link = eth_link;
netl_h->cb.log = netl_log;
struct in_addr default_ip = {INADDR_BROADCAST};
struct in6_addr default_ip6 = IN6ADDR_BROADCAST;
if (add_invalid_neighbor4(neighbor4_struct[socket_id], &default_ip,
BAD_PORT) < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"Couldn't add default target in neighbor4 table");
goto err;
}
if (add_invalid_neighbor6(neighbor6_struct[socket_id], &default_ip6,
BAD_PORT) < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"Couldn't add default target in neighbor6 table");
goto err;
}
struct in_addr invalid_ip = {INADDR_ANY};
struct in6_addr invalid_ip6 = IN6ADDR_ANY_INIT;
if (add_invalid_neighbor4(neighbor4_struct[socket_id], &invalid_ip,
BAD_PORT) < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"Couldn't add drop target in neighbor4 table");
goto err;
}
if (add_invalid_neighbor6(neighbor6_struct[socket_id], &invalid_ip6,
BAD_PORT) < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"Couldn't add drop target in neighbor6 table");
goto err;
}
res = rte_malloc("handle-res", sizeof(*res), socket_id);
res->socket_id = socket_id;
res->netl_h = netl_h;
return res;
err:
rte_panic("failed to init control_main");
}
void
control_stop(void* data)
{
struct handle_res* res;
struct netl_handle* netl_h;
res = data;
netl_h = res->netl_h;
netl_close(netl_h);
}
void
control_terminate(void* data)
{
struct handle_res* res;
res = data;
netl_free(res->netl_h);
rte_free(res);
}
int