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inetaddr.c
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/*
* DPVS is a software load balancer (Virtual Server) based on DPDK.
*
* Copyright (C) 2021 iQIYI (www.iqiyi.com).
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <assert.h>
#include "dpdk.h"
#include "ctrl.h"
#include "netif.h"
#include "netif_addr.h"
#include "timer.h"
#include "sa_pool.h"
#include "ndisc.h"
#include "route.h"
#include "route6.h"
#include "inetaddr.h"
#include "conf/inetaddr.h"
#define IFA
#define RTE_LOGTYPE_IFA RTE_LOGTYPE_USER1
#define INET_ADDR_HSIZE_SHIFT 8
#define INET_ADDR_HSIZE (1U << INET_ADDR_HSIZE_SHIFT)
struct ifaddr_action {
int af;
union inet_addr addr;
union inet_addr bcast;
uint8_t plen;
uint8_t scope;
uint32_t flags;
uint32_t valid_lft;
uint32_t prefered_lft;
struct netif_port *dev;
ifaddr_ops_t op;
};
static struct list_head inet_addr_tab[DPVS_MAX_LCORE][INET_ADDR_HSIZE];
static uint32_t inet_addr_cnt[DPVS_MAX_LCORE];
static struct list_head ifa_expired_list[DPVS_MAX_LCORE];
static uint8_t slave_workers;
static uint64_t slave_worker_mask;
/* forward declarations */
static void ifa_free(struct inet_ifaddr **ifa_p);
static void fill_ifaddr_action(int af, struct netif_port *dev,
const union inet_addr *addr, uint8_t plen,
const union inet_addr *bcast,
uint32_t valid_lft, uint32_t prefered_lft,
uint8_t scope, uint32_t flags, ifaddr_ops_t op,
struct ifaddr_action *param);
static int __inet_addr_add(const struct ifaddr_action *param);
static int __inet_addr_del(const struct ifaddr_action *param);
static int __inet_addr_mod(const struct ifaddr_action *param);
static int __inet_addr_flush(const struct ifaddr_action *param);
static int __inet_addr_sync(const struct ifaddr_action *param);
static int inet_addr_sync(const struct ifaddr_action *param);
static uint32_t ifa_msg_seq(void)
{
static uint32_t counter = 0; /* for mc msg, called from master only */
return counter++;
}
static inline struct inet_device *dev_get_idev(const struct netif_port *dev)
{
assert(dev && dev->in_ptr);
rte_atomic32_inc(&dev->in_ptr->refcnt);
return dev->in_ptr;
}
static inline void idev_put(struct inet_device *idev)
{
rte_atomic32_dec(&idev->refcnt);
}
static inline void imc_hash(struct inet_ifmcaddr *imc, struct inet_device *idev)
{
list_add(&imc->d_list, &idev->this_ifm_list);
rte_atomic32_inc(&imc->refcnt);
}
static inline void imc_unhash(struct inet_ifmcaddr *imc)
{
assert(rte_atomic32_read(&imc->refcnt) > 1);
list_del(&imc->d_list);
rte_atomic32_dec(&imc->refcnt);
}
static struct inet_ifmcaddr *imc_lookup(int af, const struct inet_device *idev,
const union inet_addr *maddr)
{
struct inet_ifmcaddr *imc;
lcoreid_t cid = rte_lcore_id();
list_for_each_entry(imc, &idev->ifm_list[cid], d_list) {
if (inet_addr_equal(af, &imc->addr, maddr)) {
rte_atomic32_inc(&imc->refcnt);
return imc;
}
}
return NULL;
}
static void imc_put(struct inet_ifmcaddr *imc)
{
char ipstr[64];
if (rte_atomic32_dec_and_test(&imc->refcnt)) {
RTE_LOG(DEBUG, IFA, "[%02d] %s: del mcaddr %s\n",
rte_lcore_id(), __func__,
inet_ntop(imc->af, &imc->addr, ipstr, sizeof(ipstr)));
/* check unhashed? */
rte_free(imc);
}
}
static int idev_mc_add(int af, struct inet_device *idev,
const union inet_addr *maddr)
{
struct inet_ifmcaddr *imc;
char ipstr[64];
imc = imc_lookup(af, idev, maddr);
if (imc) {
imc_put(imc);
return EDPVS_EXIST;
}
imc = rte_calloc(NULL, 1, sizeof(struct inet_ifmcaddr), RTE_CACHE_LINE_SIZE);
if (!imc)
return EDPVS_NOMEM;
imc->af = af;
imc->idev = idev;
imc->addr = *maddr;
rte_atomic32_init(&imc->refcnt);
imc_hash(imc, idev);
RTE_LOG(DEBUG, IFA, "[%02d] %s: create and add mcaddr %s\n",
rte_lcore_id(), __func__,
inet_ntop(af, &imc->addr, ipstr, sizeof(ipstr)));
return EDPVS_OK;
}
static int idev_mc_del(int af, struct inet_device *idev,
const union inet_addr *maddr)
{
struct inet_ifmcaddr *imc;
imc = imc_lookup(af, idev, maddr);
if (!imc)
return EDPVS_NOTEXIST;
imc_unhash(imc);
imc_put(imc);
return EDPVS_OK;
}
static int ifa_add_del_mcast(struct inet_ifaddr *ifa, bool add)
{
int err;
union inet_addr iaddr;
struct ether_addr eaddr;
/* for ipv6 only */
if (ifa->af != AF_INET6)
return EDPVS_OK;
memset(&iaddr, 0, sizeof(iaddr));
memset(&eaddr, 0, sizeof(eaddr));
addrconf_addr_solict_mult(&ifa->addr.in6, &iaddr.in6);
ipv6_mac_mult(&iaddr.in6, &eaddr);
if (add) {
err = idev_mc_add(ifa->af, ifa->idev, &iaddr);
if (err && err != EDPVS_EXIST && err != EDPVS_NOTEXIST)
return err;
err = netif_mc_add(ifa->idev->dev, &eaddr);
if (err && err != EDPVS_EXIST && err != EDPVS_NOTEXIST) {
idev_mc_del(ifa->af, ifa->idev, &iaddr);
return err;
}
} else {
err = idev_mc_del(ifa->af, ifa->idev, &iaddr);
if (err && err != EDPVS_EXIST && err != EDPVS_NOTEXIST)
return err;
err = netif_mc_del(ifa->idev->dev, &eaddr);
if (err && err != EDPVS_EXIST && err != EDPVS_NOTEXIST) {
idev_mc_add(ifa->af, ifa->idev, &iaddr);
return err;
}
}
return EDPVS_OK;
}
/* add ipv6 multicast address after port start */
int idev_add_mcast_init(void *args)
{
int err;
struct inet_device *idev;
union inet_addr all_nodes, all_routers;
struct ether_addr eaddr_nodes, eaddr_routers;
struct netif_port *dev = (struct netif_port *) args;
idev = dev_get_idev(dev);
memset(&eaddr_nodes, 0, sizeof(eaddr_nodes));
memset(&eaddr_routers, 0, sizeof(eaddr_routers));
memcpy(&all_nodes, &in6addr_linklocal_allnodes, sizeof(all_nodes));
memcpy(&all_routers, &in6addr_linklocal_allrouters, sizeof(all_routers));
ipv6_mac_mult(&all_nodes.in6, &eaddr_nodes);
ipv6_mac_mult(&all_routers.in6, &eaddr_routers);
err = idev_mc_add(AF_INET6, idev, &all_nodes);
if (err != EDPVS_OK)
goto errout;
err = netif_mc_add(idev->dev, &eaddr_nodes);
if (err != EDPVS_OK)
goto free_idev_nodes;
err = idev_mc_add(AF_INET6, idev, &all_routers);
if (err != EDPVS_OK)
goto free_netif_nodes;
err = netif_mc_add(idev->dev, &eaddr_routers);
if (err != EDPVS_OK)
goto free_idev_routers;
idev_put(idev);
return EDPVS_OK;
free_idev_routers:
idev_mc_del(AF_INET6, idev, &all_routers);
free_netif_nodes:
netif_mc_del(idev->dev, &eaddr_nodes);
free_idev_nodes:
idev_mc_del(AF_INET6, idev, &all_nodes);
errout:
idev_put(idev);
return err;
}
/* refer to linux:ipv6_chk_mcast_addr */
bool inet_chk_mcast_addr(int af, struct netif_port *dev,
const union inet_addr *group,
const union inet_addr *src)
{
int ret;
struct inet_device *idev;
struct inet_ifmcaddr *imc;
/* for ipv6 only */
if (af != AF_INET6)
return true;
idev = dev_get_idev(dev);
if (unlikely(idev == NULL))
return false;
ret = false;
imc = imc_lookup(af, idev, group);
if (imc) {
if (src && !ipv6_addr_any(&src->in6)) {
/* TODO: check source-specific multicast (SSM) if @src is assigned */
ret = true;
} else {
ret = true;
}
imc_put(imc);
}
idev_put(idev);
return ret;
}
static inline bool ifa_prefix_check(int af, const union inet_addr *addr,
uint8_t plen)
{
if (af != AF_INET && af != AF_INET6)
return false;
if (inet_is_addr_any(af, addr))
return false;
if ((af == AF_INET && plen > 32) ||
(af == AF_INET6 && plen > 128))
return false;
return true;
}
static inline void ifa_set_lifetime(struct inet_ifaddr *ifa,
uint32_t valid_lft, uint32_t prefered_lft)
{
/* TODO: support prefered_lft */
prefered_lft = valid_lft;
if (!valid_lft)
ifa->flags |= IFA_F_PERMANENT;
else
ifa->flags &= ~IFA_F_PERMANENT;
ifa->valid_lft = valid_lft;
ifa->prefered_lft = prefered_lft;
}
static uint32_t ifa_hash_key(int af, const union inet_addr *addr)
{
uint32_t hash, fold;
fold = inet_addr_fold(af, addr);
hash = (fold * 0x61C88647) >> (32 - INET_ADDR_HSIZE_SHIFT);
return hash % INET_ADDR_HSIZE;
}
static struct inet_ifaddr *ifa_lookup(struct inet_device *idev,
const union inet_addr *addr,
uint8_t plen, int af)
{
struct inet_ifaddr *ifa;
list_for_each_entry(ifa, &idev->this_ifa_list, d_list) {
if ((!plen || ifa->plen == plen) && (ifa->af == af)
&& inet_addr_equal(ifa->af, &ifa->addr, addr)) {
rte_atomic32_inc(&ifa->refcnt);
return ifa;
}
}
return NULL;
}
static struct inet_ifaddr *expired_ifa_lookup(struct inet_device *idev,
const union inet_addr *addr,
uint8_t plen, int af)
{
struct inet_ifaddr *ifa;
lcoreid_t cid = rte_lcore_id();
list_for_each_entry(ifa, &ifa_expired_list[cid], h_list) {
if ((!plen || ifa->plen == plen) && (ifa->af == af)
&& inet_addr_equal(af, &ifa->addr, addr)
&& ifa->idev == idev) {
rte_atomic32_inc(&ifa->refcnt);
return ifa;
}
}
return NULL;
}
static void ifa_put(struct inet_ifaddr *ifa)
{
if (rte_atomic32_dec_and_test(&ifa->refcnt)) {
/* check unhashed? */
ifa_free(&ifa);
}
}
static void ifa_hash(struct inet_device *idev, struct inet_ifaddr *ifa)
{
uint32_t hash;
lcoreid_t cid = rte_lcore_id();
/* add to global hash table */
hash = ifa_hash_key(ifa->af, &ifa->addr);
list_add(&ifa->h_list, &inet_addr_tab[cid][hash]);
++inet_addr_cnt[cid];
/* add to inet_device's list */
list_add(&ifa->d_list, &idev->ifa_list[cid]);
++idev->ifa_cnt[cid];
rte_atomic32_inc(&ifa->refcnt);
}
static void ifa_unhash(struct inet_ifaddr *ifa)
{
lcoreid_t cid = rte_lcore_id();
assert(rte_atomic32_read(&ifa->refcnt) > 1);
list_del(&ifa->h_list);
list_del(&ifa->d_list);
INIT_LIST_HEAD(&ifa->h_list);
INIT_LIST_HEAD(&ifa->d_list);
assert(inet_addr_cnt[cid] > 0 && ifa->idev->ifa_cnt[cid] > 0);
--inet_addr_cnt[cid];
--ifa->idev->ifa_cnt[cid];
/* move @ifa to @ifa_expired_list, and remove it @ifa_free later */
list_add_tail(&ifa->h_list, &ifa_expired_list[cid]);
/* free sapool when no one is using it.
* note ifa may free from here. */
if (ifa->flags & IFA_F_SAPOOL)
sa_pool_destroy(ifa);
rte_atomic32_dec(&ifa->refcnt);
}
struct netif_port *inet_addr_get_iface(int af, union inet_addr *addr)
{
lcoreid_t cid;
uint32_t hash;
struct inet_ifaddr *ifa;
cid = rte_lcore_id();
hash = ifa_hash_key(af, addr);
list_for_each_entry(ifa, &inet_addr_tab[cid][hash], h_list) {
if (inet_addr_equal(af, &ifa->addr, addr))
return ifa->idev->dev;
}
return NULL;
}
struct inet_ifaddr *inet_addr_ifa_get(int af, const struct netif_port *dev,
union inet_addr *addr)
{
struct inet_ifaddr *ifa;
struct inet_device *idev;
if (!dev) {
dev = inet_addr_get_iface(af, addr);
if (!dev)
return NULL;
}
idev = dev_get_idev(dev);
assert(idev != NULL);
ifa = ifa_lookup(idev, addr, 0, af);
idev_put(idev);
return ifa;
}
struct inet_ifaddr *inet_addr_ifa_get_expired(int af, const struct netif_port *dev,
union inet_addr *addr)
{
struct inet_ifaddr *ifa;
struct inet_device *idev;
if (!dev) {
dev = inet_addr_get_iface(af, addr);
if (!dev)
return NULL;
}
idev = dev_get_idev(dev);
assert(idev != NULL);
ifa = expired_ifa_lookup(idev, addr, 0, af);
idev_put(idev);
return ifa;
}
void inet_addr_ifa_put(struct inet_ifaddr *ifa)
{
ifa_put(ifa);
}
void inet_addr_select(int af, const struct netif_port *dev,
const union inet_addr *dst, int scope,
union inet_addr *addr)
{
struct inet_device *idev;
struct inet_ifaddr *ifa;
lcoreid_t cid = rte_lcore_id();
if (!addr || !dev)
return;
idev = dev_get_idev(dev);
if (unlikely(!idev))
return;
switch (af) {
case AF_INET:
addr->in.s_addr = htonl(INADDR_ANY);
list_for_each_entry(ifa, &idev->ifa_list[cid], d_list) {
if (ifa->af != AF_INET)
continue;
if ((ifa->flags & IFA_F_SECONDARY) ||
(ifa->flags & IFA_F_TENTATIVE))
continue;
if (ifa->scope > scope)
continue;
if (!dst || inet_addr_same_net(af, ifa->plen, dst, &ifa->addr)) {
*addr = ifa->addr;
break;
}
/* save it and may have better choice later */
*addr = ifa->addr;
}
break;
case AF_INET6:
addr->in6 = in6addr_any;
ipv6_addr_select(idev, dst, addr);
break;
default:
break;
}
idev_put(idev);
}
static int ifa_add_route4(struct inet_ifaddr *ifa)
{
int err;
union inet_addr net;
err = route_add(&ifa->addr.in, 32, RTF_LOCALIN,
NULL, ifa->idev->dev, NULL, 0, 0);
if (err != EDPVS_OK && err != EDPVS_EXIST)
return err;
err = inet_addr_net(ifa->af, &ifa->addr, &ifa->mask, &net);
if (err != EDPVS_OK)
goto errout;
if (ifa->plen == 32)
return EDPVS_OK;
err = route_add(&net.in, ifa->plen, RTF_FORWARD,
NULL, ifa->idev->dev, &ifa->addr.in, 0, 0);
if (err != EDPVS_OK && err != EDPVS_EXIST)
goto errout;
return EDPVS_OK;
errout:
route_del(&ifa->addr.in, ifa->plen, RTF_LOCALIN,
NULL, ifa->idev->dev, NULL, 0, 0);
return err;
}
static int ifa_add_route6(struct inet_ifaddr *ifa)
{
int err;
struct in6_addr net;
err = route6_add(&ifa->addr.in6, 128, RTF_LOCALIN,
&in6addr_any, ifa->idev->dev,
&in6addr_any, ifa->idev->dev->mtu);
if (err != EDPVS_OK && err != EDPVS_EXIST)
return err;
if (ifa->plen == 128)
return EDPVS_OK;
ipv6_addr_prefix(&net, &ifa->addr.in6, ifa->plen);
err = route6_add(&net, ifa->plen, RTF_FORWARD,
&in6addr_any, ifa->idev->dev,
&ifa->addr.in6, ifa->idev->dev->mtu);
if (err != EDPVS_OK && err != EDPVS_EXIST)
goto errout;
return EDPVS_OK;
errout:
route6_del(&ifa->addr.in6, 128, RTF_LOCALIN,
&in6addr_any, ifa->idev->dev,
&in6addr_any, ifa->idev->dev->mtu);
return err;
}
static int ifa_add_route(struct inet_ifaddr *ifa)
{
/* set route from master */
if (unlikely(rte_lcore_id() != rte_get_master_lcore()))
return EDPVS_OK;
switch (ifa->af) {
case AF_INET:
return ifa_add_route4(ifa);
case AF_INET6:
return ifa_add_route6(ifa);
default:
return EDPVS_NOTSUPP;
}
}
static int ifa_del_route4(struct inet_ifaddr *ifa)
{
int err;
union inet_addr net;
err = route_del(&ifa->addr.in, 32, RTF_LOCALIN,
NULL, ifa->idev->dev, NULL, 0, 0);
if (err != EDPVS_OK && err != EDPVS_NOTEXIST)
RTE_LOG(WARNING, IFA, "%s: fail to delete localin route\n", __func__);
if (ifa->plen == 32)
return EDPVS_OK;
err = inet_addr_net(ifa->af, &ifa->addr, &ifa->mask, &net);
if (err != EDPVS_OK)
RTE_LOG(WARNING, IFA, "%s: fail to get ip net\n", __func__);
err = route_del(&net.in, ifa->plen, RTF_FORWARD,
NULL, ifa->idev->dev, &ifa->addr.in, 0, 0);
if (err != EDPVS_OK && err != EDPVS_NOTEXIST)
RTE_LOG(WARNING, IFA, "%s: fail to delete forward route\n", __func__);
return EDPVS_OK;
}
static int ifa_del_route6(struct inet_ifaddr *ifa)
{
int err;
struct in6_addr net;
err = route6_del(&ifa->addr.in6, 128, RTF_LOCALIN,
&in6addr_any, ifa->idev->dev,
&in6addr_any, ifa->idev->dev->mtu);
if (err != EDPVS_OK && err != EDPVS_NOTEXIST)
RTE_LOG(WARNING, IFA, "%s: fail to delete localin route\n", __func__);
if (ifa->plen == 128)
return EDPVS_OK;
ipv6_addr_prefix(&net, &ifa->addr.in6, ifa->plen);
err = route6_del(&net, ifa->plen, RTF_FORWARD,
&in6addr_any, ifa->idev->dev,
&in6addr_any, ifa->idev->dev->mtu);
if (err != EDPVS_OK && err != EDPVS_NOTEXIST)
RTE_LOG(WARNING, IFA, "%s: fail to delete forward route\n", __func__);
return EDPVS_OK;
}
static int ifa_del_route(struct inet_ifaddr *ifa)
{
/* set route from master */
if (unlikely(rte_lcore_id() != rte_get_master_lcore()))
return EDPVS_OK;
switch (ifa->af) {
case AF_INET:
return ifa_del_route4(ifa);
case AF_INET6:
return ifa_del_route6(ifa);
default:
return EDPVS_NOTSUPP;
}
}
static int inet_ifaddr_dad_completed(void *arg)
{
int err;
struct ifaddr_action param;
struct inet_ifaddr *ifa = arg;
/* only master's ifa scheduled ifa->dad_timer */
assert(rte_lcore_id() == rte_get_master_lcore());
dpvs_timer_cancel_nolock(&ifa->dad_timer, true);
ifa->flags &= ~(IFA_F_TENTATIVE | IFA_F_OPTIMISTIC | IFA_F_DADFAILED);
/* sync ifa->flags */
fill_ifaddr_action(ifa->af, ifa->idev->dev, &ifa->addr, ifa->plen, &ifa->bcast,
ifa->valid_lft, ifa->prefered_lft, ifa->scope,
ifa->flags, INET_ADDR_SYNC, ¶m);
err = inet_addr_sync(¶m);
if (err != EDPVS_OK)
RTE_LOG(ERR, IFA, "%s: inet_addr_sync failed\n", __func__);
return DTIMER_OK;
}
static void inet_ifaddr_dad_start(struct inet_ifaddr *ifa)
{
lcoreid_t cid = rte_lcore_id();
struct timeval tv = {
.tv_sec = 3,
.tv_usec = 0
};
if (ifa->flags & IFA_F_NODAD || !(ifa->flags & IFA_F_TENTATIVE)) {
ifa->flags &= ~(IFA_F_TENTATIVE | IFA_F_OPTIMISTIC | IFA_F_DADFAILED);
return;
}
ifa->flags |= IFA_F_TENTATIVE | IFA_F_OPTIMISTIC;
/* timing and sending dad on master only */
if (cid != rte_get_master_lcore())
return;
dpvs_time_rand_delay(&tv, 1000000);
dpvs_timer_cancel(&ifa->dad_timer, true);
dpvs_timer_sched(&ifa->dad_timer, &tv, inet_ifaddr_dad_completed, ifa, true);
ndisc_send_dad(ifa->idev->dev, &ifa->addr.in6);
}
/* called from slave lcore */
void inet_ifaddr_dad_failure(struct inet_ifaddr *ifa)
{
struct ifaddr_action param;
if (ifa->flags & IFA_F_PERMANENT) {
ifa->flags |= IFA_F_DADFAILED;
fill_ifaddr_action(ifa->af, ifa->idev->dev, &ifa->addr, ifa->plen,
&ifa->bcast, ifa->valid_lft, ifa->prefered_lft,
ifa->scope, ifa->flags, INET_ADDR_SYNC, ¶m);
if (inet_addr_sync(¶m) != EDPVS_OK)
RTE_LOG(ERR, IFA, "[%02d] %s: inet_addr_sync failed\n",
rte_lcore_id(), __func__);
} else if (ifa->flags & IFA_F_TENTATIVE) {
/* TODO: support privacy addr */
RTE_LOG(WARNING, IFA, "[%02d] %s: privacy addr is not supported.\n",
rte_lcore_id(), __func__);
return;
} else {
/* delete ifa from all lcores */
fill_ifaddr_action(ifa->af, ifa->idev->dev, &ifa->addr, ifa->plen, &ifa->bcast,
ifa->valid_lft, ifa->prefered_lft, ifa->scope,
ifa->flags, INET_ADDR_DEL, ¶m);
if (inet_addr_sync(¶m) != EDPVS_OK)
RTE_LOG(ERR, IFA, "[%02d] %s: inet_addr_sync failed\n",
rte_lcore_id(), __func__);
}
}
static int ifa_expire(void *arg)
{
int err;
lcoreid_t cid = rte_lcore_id();
struct inet_ifaddr *ifa = (struct inet_ifaddr *)arg;
/* only master's ifa scheduled ifa->timer */
assert(cid == rte_get_master_lcore());
err = inet_addr_del(ifa->af, ifa->idev->dev, &ifa->addr, ifa->plen);
if (err != EDPVS_OK) {
RTE_LOG(ERR, IFA, "inet_addr_del failed\n", __func__);
return DTIMER_OK;
}
return DTIMER_STOP;
}
static int ifa_entry_add(const struct ifaddr_action *param)
{
int err;
char ipstr[64];
struct inet_device *idev;
struct inet_ifaddr *ifa;
struct timeval timeo = { 0 };
bool is_master = (rte_lcore_id() == rte_get_master_lcore());
if (!param || !param->dev || !ifa_prefix_check(param->af,
¶m->addr, param->plen))
return EDPVS_INVAL;
idev = dev_get_idev(param->dev);
if (!idev)
return EDPVS_RESOURCE;
ifa = ifa_lookup(idev, ¶m->addr, param->plen, param->af);
if (ifa) {
ifa_put(ifa);
err = EDPVS_EXIST;
goto errout;
}
/* reuse expired ifa */
ifa = expired_ifa_lookup(idev, ¶m->addr, param->plen, param->af);
if (ifa) {
if (ifa->flags & IFA_F_SAPOOL) {
hold_ifa_sa_pool(ifa); /* hold sa_pool again */
}
list_del_init(&ifa->h_list);
ifa_hash(idev, ifa);
ifa_put(ifa);
RTE_LOG(DEBUG, IFA, "[%02d] %s: reuse expired ifaddr %s\n", rte_lcore_id(), __func__,
inet_ntop(ifa->af, &ifa->addr, ipstr, sizeof(ipstr)));
return EDPVS_OK;
}
ifa = rte_calloc(NULL, 1, sizeof(*ifa), RTE_CACHE_LINE_SIZE);
if (!ifa) {
err = EDPVS_NOMEM;
goto errout;
}
ifa->idev = idev;
ifa->af = param->af;
ifa->addr = param->addr;
ifa->plen = param->plen;
ifa->bcast = param->bcast;
ifa->scope = param->scope;
ifa->flags = param->flags;
if (param->af == AF_INET)
inet_plen_to_mask(param->af, param->plen, &ifa->mask);
rte_atomic32_init(&ifa->refcnt);
ifa_set_lifetime(ifa, param->valid_lft, param->prefered_lft);
dpvs_time_now(&ifa->tstemp, is_master); /* mod time */
dpvs_time_now(&ifa->cstemp, is_master); /* create time */
err = ifa_add_del_mcast(ifa, true);
if (err != EDPVS_OK)
goto free_ifa;
err = ifa_add_route(ifa);
if (err != EDPVS_OK && err != EDPVS_EXIST)
goto del_mc;
if (ifa->flags & IFA_F_SAPOOL) {
err = sa_pool_create(ifa, 0, 0);
if (err != EDPVS_OK)
goto del_route;
}
#ifdef CONFIG_TIMER_DEBUG
snprintf(ifa->timer.name, sizeof(ifa->timer.name), "%s", "ifa_temp_timer");
snprintf(ifa->dad_timer.name, sizeof(ifa->dad_timer.name), "%s", "ifa_dad_timer");
#endif
if (!(ifa->flags & IFA_F_PERMANENT)) {
timeo.tv_sec = ifa->valid_lft;
if (is_master) {
dpvs_time_rand_delay(&timeo, 1000000);
dpvs_timer_sched(&ifa->timer, &timeo, ifa_expire, ifa, true);
}
}
if ((ifa->af == AF_INET6) && (ifa->flags & IFA_F_PERMANENT)) {
ifa->flags |= IFA_F_TENTATIVE | IFA_F_OPTIMISTIC;
inet_ifaddr_dad_start(ifa);
}
ifa_hash(idev, ifa);
RTE_LOG(DEBUG, IFA, "[%02d] %s: add ifaddr %s\n", rte_lcore_id(), __func__,
inet_ntop(ifa->af, &ifa->addr, ipstr, sizeof(ipstr)));
/* note: hold @idev until ifa deleted */
return EDPVS_OK;
del_route:
ifa_del_route(ifa);
del_mc:
ifa_add_del_mcast(ifa, false);
free_ifa:
rte_free(ifa);
errout:
idev_put(idev);
RTE_LOG(WARNING, IFA, "[%02d] %s: add ifaddr %s failed -- %s\n", rte_lcore_id(), __func__,
inet_ntop(param->af, ¶m->addr, ipstr, sizeof(ipstr)), dpvs_strerror(err));
return err;
}
static int ifa_entry_mod(const struct ifaddr_action *param)
{
int err;
char ipstr[64];
struct inet_device *idev;
struct inet_ifaddr *ifa;
struct timeval timeo = { 0 };
bool is_master = (rte_lcore_id() == rte_get_master_lcore());
if (!param || !param->dev || !ifa_prefix_check(param->af,
¶m->addr, param->plen))
return EDPVS_INVAL;
idev = dev_get_idev(param->dev);
if (!idev)
return EDPVS_RESOURCE;
ifa = ifa_lookup(idev, ¶m->addr, param->plen, param->af);
if (!ifa) {
err = EDPVS_NOTEXIST;
goto errout;
}
dpvs_time_now(&ifa->tstemp, is_master); /* mod time */
ifa->bcast = param->bcast;
ifa->scope = param->scope;
ifa_set_lifetime(ifa, param->valid_lft, param->prefered_lft);
if (!(ifa->flags & IFA_F_PERMANENT)) {
timeo.tv_sec = ifa->valid_lft;
if (is_master) {
dpvs_timer_cancel(&ifa->timer, true);
dpvs_time_rand_delay(&timeo, 1000000);
dpvs_timer_sched(&ifa->timer, &timeo, ifa_expire, ifa, true);
}
}
if ((ifa->af == AF_INET6) && (ifa->flags & IFA_F_PERMANENT)) {
ifa->flags |= IFA_F_TENTATIVE | IFA_F_OPTIMISTIC;
inet_ifaddr_dad_start(ifa);
}
RTE_LOG(DEBUG, IFA, "[%02d] %s: edit ifaddr %s\n", rte_lcore_id(), __func__,
inet_ntop(ifa->af, &ifa->addr, ipstr, sizeof(ipstr)));
ifa_put(ifa);
idev_put(idev);
return EDPVS_OK;
errout:
idev_put(idev);
RTE_LOG(WARNING, IFA, "[%02d] %s: edit ifaddr %s failed -- %s\n", rte_lcore_id(), __func__,
inet_ntop(param->af, ¶m->addr, ipstr, sizeof(ipstr)), dpvs_strerror(err));
return err;
}
static int ifa_entry_del(const struct ifaddr_action *param)
{
struct inet_ifaddr *ifa;
struct inet_device *idev;
if (!param || !param->dev || !ifa_prefix_check(param->af,
¶m->addr, param->plen))
return EDPVS_INVAL;
idev = dev_get_idev(param->dev);
if (unlikely(!idev))
return EDPVS_RESOURCE;
ifa = ifa_lookup(idev, ¶m->addr, param->plen, param->af);
if (!ifa) {
idev_put(idev);
return EDPVS_NOTEXIST;
}
ifa_unhash(ifa);
ifa_put(ifa);
idev_put(idev);
return EDPVS_OK;
}
static int ifa_entry_flush(const struct ifaddr_action *param)
{
struct inet_ifaddr *ifa, *nxt;
struct inet_device *idev;
lcoreid_t cid = rte_lcore_id();
if (!param || !param->dev)
return EDPVS_INVAL;
idev = dev_get_idev(param->dev);
if (unlikely(!idev))
return EDPVS_RESOURCE;
list_for_each_entry_safe(ifa, nxt, &idev->ifa_list[cid], d_list) {
rte_atomic32_inc(&ifa->refcnt); /* hold @ifa before unhash */
ifa_unhash(ifa);
ifa_put(ifa);
}
idev_put(idev);
return EDPVS_OK;
}