aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/linux/inetdevice.h1
-rw-r--r--include/net/addrconf.h13
-rw-r--r--include/net/if_inet6.h1
-rw-r--r--include/net/route.h1
-rw-r--r--include/uapi/linux/if_addr.h1
-rw-r--r--net/ipv4/devinet.c15
-rw-r--r--net/ipv4/fib_frontend.c53
-rw-r--r--net/ipv6/addrconf.c359
-rw-r--r--[-rwxr-xr-x]tools/testing/selftests/net/fib_tests.sh181
9 files changed, 472 insertions, 153 deletions
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index e16fe7d44a71..27650f1bff3d 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -139,6 +139,7 @@ struct in_ifaddr {
__be32 ifa_local;
__be32 ifa_address;
__be32 ifa_mask;
+ __u32 ifa_rt_priority;
__be32 ifa_broadcast;
unsigned char ifa_scope;
unsigned char ifa_prefixlen;
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index c07d4dd09361..5f43f7a70fe6 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -59,6 +59,19 @@ struct in6_validator_info {
struct netlink_ext_ack *extack;
};
+struct ifa6_config {
+ const struct in6_addr *pfx;
+ unsigned int plen;
+
+ const struct in6_addr *peer_pfx;
+
+ u32 rt_priority;
+ u32 ifa_flags;
+ u32 preferred_lft;
+ u32 valid_lft;
+ u16 scope;
+};
+
int addrconf_init(void);
void addrconf_cleanup(void);
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
index db389253dc2a..d7578cf49c3a 100644
--- a/include/net/if_inet6.h
+++ b/include/net/if_inet6.h
@@ -42,6 +42,7 @@ enum {
struct inet6_ifaddr {
struct in6_addr addr;
__u32 prefix_len;
+ __u32 rt_priority;
/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
__u32 valid_lft;
diff --git a/include/net/route.h b/include/net/route.h
index dbb032d5921b..bb53cdba38dc 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -225,6 +225,7 @@ struct rtable *rt_dst_alloc(struct net_device *dev,
struct in_ifaddr;
void fib_add_ifaddr(struct in_ifaddr *);
void fib_del_ifaddr(struct in_ifaddr *, struct in_ifaddr *);
+void fib_modify_prefix_metric(struct in_ifaddr *ifa, u32 new_metric);
void rt_add_uncached_list(struct rtable *rt);
void rt_del_uncached_list(struct rtable *rt);
diff --git a/include/uapi/linux/if_addr.h b/include/uapi/linux/if_addr.h
index 2ef053d265de..ebaf5701c9db 100644
--- a/include/uapi/linux/if_addr.h
+++ b/include/uapi/linux/if_addr.h
@@ -33,6 +33,7 @@ enum {
IFA_CACHEINFO,
IFA_MULTICAST,
IFA_FLAGS,
+ IFA_RT_PRIORITY, /* u32, priority/metric for prefix route */
__IFA_MAX,
};
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 40f001782c1b..d7585ab1a77a 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -99,6 +99,7 @@ static const struct nla_policy ifa_ipv4_policy[IFA_MAX+1] = {
[IFA_LABEL] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 },
[IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) },
[IFA_FLAGS] = { .type = NLA_U32 },
+ [IFA_RT_PRIORITY] = { .type = NLA_U32 },
};
#define IN4_ADDR_HSIZE_SHIFT 8
@@ -835,6 +836,9 @@ static struct in_ifaddr *rtm_to_ifaddr(struct net *net, struct nlmsghdr *nlh,
else
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
+ if (tb[IFA_RT_PRIORITY])
+ ifa->ifa_rt_priority = nla_get_u32(tb[IFA_RT_PRIORITY]);
+
if (tb[IFA_CACHEINFO]) {
struct ifa_cacheinfo *ci;
@@ -906,12 +910,20 @@ static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh,
return __inet_insert_ifa(ifa, nlh, NETLINK_CB(skb).portid,
extack);
} else {
+ u32 new_metric = ifa->ifa_rt_priority;
+
inet_free_ifa(ifa);
if (nlh->nlmsg_flags & NLM_F_EXCL ||
!(nlh->nlmsg_flags & NLM_F_REPLACE))
return -EEXIST;
ifa = ifa_existing;
+
+ if (ifa->ifa_rt_priority != new_metric) {
+ fib_modify_prefix_metric(ifa, new_metric);
+ ifa->ifa_rt_priority = new_metric;
+ }
+
set_ifa_lifetime(ifa, valid_lft, prefered_lft);
cancel_delayed_work(&check_lifetime_work);
queue_delayed_work(system_power_efficient_wq,
@@ -1549,6 +1561,7 @@ static size_t inet_nlmsg_size(void)
+ nla_total_size(4) /* IFA_BROADCAST */
+ nla_total_size(IFNAMSIZ) /* IFA_LABEL */
+ nla_total_size(4) /* IFA_FLAGS */
+ + nla_total_size(4) /* IFA_RT_PRIORITY */
+ nla_total_size(sizeof(struct ifa_cacheinfo)); /* IFA_CACHEINFO */
}
@@ -1618,6 +1631,8 @@ static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa,
(ifa->ifa_label[0] &&
nla_put_string(skb, IFA_LABEL, ifa->ifa_label)) ||
nla_put_u32(skb, IFA_FLAGS, ifa->ifa_flags) ||
+ (ifa->ifa_rt_priority &&
+ nla_put_u32(skb, IFA_RT_PRIORITY, ifa->ifa_rt_priority)) ||
put_cacheinfo(skb, ifa->ifa_cstamp, ifa->ifa_tstamp,
preferred, valid))
goto nla_put_failure;
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index b69e2824c761..63aa39b3af03 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -847,7 +847,8 @@ out_err:
* to fib engine. It is legal, because all events occur
* only when netlink is already locked.
*/
-static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifaddr *ifa)
+static void fib_magic(int cmd, int type, __be32 dst, int dst_len,
+ struct in_ifaddr *ifa, u32 rt_priority)
{
struct net *net = dev_net(ifa->ifa_dev->dev);
u32 tb_id = l3mdev_fib_table(ifa->ifa_dev->dev);
@@ -857,6 +858,7 @@ static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifad
.fc_type = type,
.fc_dst = dst,
.fc_dst_len = dst_len,
+ .fc_priority = rt_priority,
.fc_prefsrc = ifa->ifa_local,
.fc_oif = ifa->ifa_dev->dev->ifindex,
.fc_nlflags = NLM_F_CREATE | NLM_F_APPEND,
@@ -902,31 +904,57 @@ void fib_add_ifaddr(struct in_ifaddr *ifa)
}
}
- fib_magic(RTM_NEWROUTE, RTN_LOCAL, addr, 32, prim);
+ fib_magic(RTM_NEWROUTE, RTN_LOCAL, addr, 32, prim, 0);
if (!(dev->flags & IFF_UP))
return;
/* Add broadcast address, if it is explicitly assigned. */
if (ifa->ifa_broadcast && ifa->ifa_broadcast != htonl(0xFFFFFFFF))
- fib_magic(RTM_NEWROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim);
+ fib_magic(RTM_NEWROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32,
+ prim, 0);
if (!ipv4_is_zeronet(prefix) && !(ifa->ifa_flags & IFA_F_SECONDARY) &&
(prefix != addr || ifa->ifa_prefixlen < 32)) {
if (!(ifa->ifa_flags & IFA_F_NOPREFIXROUTE))
fib_magic(RTM_NEWROUTE,
dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST,
- prefix, ifa->ifa_prefixlen, prim);
+ prefix, ifa->ifa_prefixlen, prim,
+ ifa->ifa_rt_priority);
/* Add network specific broadcasts, when it takes a sense */
if (ifa->ifa_prefixlen < 31) {
- fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix, 32, prim);
+ fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix, 32,
+ prim, 0);
fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix | ~mask,
- 32, prim);
+ 32, prim, 0);
}
}
}
+void fib_modify_prefix_metric(struct in_ifaddr *ifa, u32 new_metric)
+{
+ __be32 prefix = ifa->ifa_address & ifa->ifa_mask;
+ struct in_device *in_dev = ifa->ifa_dev;
+ struct net_device *dev = in_dev->dev;
+
+ if (!(dev->flags & IFF_UP) ||
+ ifa->ifa_flags & (IFA_F_SECONDARY | IFA_F_NOPREFIXROUTE) ||
+ ipv4_is_zeronet(prefix) ||
+ prefix == ifa->ifa_local || ifa->ifa_prefixlen == 32)
+ return;
+
+ /* add the new */
+ fib_magic(RTM_NEWROUTE,
+ dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST,
+ prefix, ifa->ifa_prefixlen, ifa, new_metric);
+
+ /* delete the old */
+ fib_magic(RTM_DELROUTE,
+ dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST,
+ prefix, ifa->ifa_prefixlen, ifa, ifa->ifa_rt_priority);
+}
+
/* Delete primary or secondary address.
* Optionally, on secondary address promotion consider the addresses
* from subnet iprim as deleted, even if they are in device list.
@@ -968,7 +996,7 @@ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim)
if (!(ifa->ifa_flags & IFA_F_NOPREFIXROUTE))
fib_magic(RTM_DELROUTE,
dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST,
- any, ifa->ifa_prefixlen, prim);
+ any, ifa->ifa_prefixlen, prim, 0);
subnet = 1;
}
@@ -1052,17 +1080,20 @@ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim)
no_promotions:
if (!(ok & BRD_OK))
- fib_magic(RTM_DELROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim);
+ fib_magic(RTM_DELROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32,
+ prim, 0);
if (subnet && ifa->ifa_prefixlen < 31) {
if (!(ok & BRD1_OK))
- fib_magic(RTM_DELROUTE, RTN_BROADCAST, brd, 32, prim);
+ fib_magic(RTM_DELROUTE, RTN_BROADCAST, brd, 32,
+ prim, 0);
if (!(ok & BRD0_OK))
- fib_magic(RTM_DELROUTE, RTN_BROADCAST, any, 32, prim);
+ fib_magic(RTM_DELROUTE, RTN_BROADCAST, any, 32,
+ prim, 0);
}
if (!(ok & LOCAL_OK)) {
unsigned int addr_type;
- fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 32, prim);
+ fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 32, prim, 0);
/* Check, that this local address finally disappeared. */
addr_type = inet_addr_type_dev_table(dev_net(dev), dev,
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index fbfd71a2d9c8..f09afc232da4 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -986,17 +986,15 @@ static int ipv6_add_addr_hash(struct net_device *dev, struct inet6_ifaddr *ifa)
/* On success it returns ifp with increased reference count */
static struct inet6_ifaddr *
-ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
- const struct in6_addr *peer_addr, int pfxlen,
- int scope, u32 flags, u32 valid_lft, u32 prefered_lft,
+ipv6_add_addr(struct inet6_dev *idev, struct ifa6_config *cfg,
bool can_block, struct netlink_ext_ack *extack)
{
gfp_t gfp_flags = can_block ? GFP_KERNEL : GFP_ATOMIC;
+ int addr_type = ipv6_addr_type(cfg->pfx);
struct net *net = dev_net(idev->dev);
struct inet6_ifaddr *ifa = NULL;
struct fib6_info *f6i = NULL;
int err = 0;
- int addr_type = ipv6_addr_type(addr);
if (addr_type == IPV6_ADDR_ANY ||
addr_type & IPV6_ADDR_MULTICAST ||
@@ -1019,7 +1017,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
*/
if (can_block) {
struct in6_validator_info i6vi = {
- .i6vi_addr = *addr,
+ .i6vi_addr = *cfg->pfx,
.i6vi_dev = idev,
.extack = extack,
};
@@ -1036,7 +1034,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
goto out;
}
- f6i = addrconf_f6i_alloc(net, idev, addr, false, gfp_flags);
+ f6i = addrconf_f6i_alloc(net, idev, cfg->pfx, false, gfp_flags);
if (IS_ERR(f6i)) {
err = PTR_ERR(f6i);
f6i = NULL;
@@ -1049,21 +1047,22 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
neigh_parms_data_state_setall(idev->nd_parms);
- ifa->addr = *addr;
- if (peer_addr)
- ifa->peer_addr = *peer_addr;
+ ifa->addr = *cfg->pfx;
+ if (cfg->peer_pfx)
+ ifa->peer_addr = *cfg->peer_pfx;
spin_lock_init(&ifa->lock);
INIT_DELAYED_WORK(&ifa->dad_work, addrconf_dad_work);
INIT_HLIST_NODE(&ifa->addr_lst);
- ifa->scope = scope;
- ifa->prefix_len = pfxlen;
- ifa->flags = flags;
+ ifa->scope = cfg->scope;
+ ifa->prefix_len = cfg->plen;
+ ifa->rt_priority = cfg->rt_priority;
+ ifa->flags = cfg->ifa_flags;
/* No need to add the TENTATIVE flag for addresses with NODAD */
- if (!(flags & IFA_F_NODAD))
+ if (!(cfg->ifa_flags & IFA_F_NODAD))
ifa->flags |= IFA_F_TENTATIVE;
- ifa->valid_lft = valid_lft;
- ifa->prefered_lft = prefered_lft;
+ ifa->valid_lft = cfg->valid_lft;
+ ifa->prefered_lft = cfg->preferred_lft;
ifa->cstamp = ifa->tstamp = jiffies;
ifa->tokenized = false;
@@ -1260,11 +1259,10 @@ static int ipv6_create_tempaddr(struct inet6_ifaddr *ifp,
{
struct inet6_dev *idev = ifp->idev;
struct in6_addr addr, *tmpaddr;
- unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_tstamp, age;
+ unsigned long tmp_tstamp, age;
unsigned long regen_advance;
- int tmp_plen;
+ struct ifa6_config cfg;
int ret = 0;
- u32 addr_flags;
unsigned long now = jiffies;
long max_desync_factor;
s32 cnf_temp_preferred_lft;
@@ -1326,13 +1324,12 @@ retry:
}
}
- tmp_valid_lft = min_t(__u32,
- ifp->valid_lft,
+ cfg.valid_lft = min_t(__u32, ifp->valid_lft,
idev->cnf.temp_valid_lft + age);
- tmp_prefered_lft = cnf_temp_preferred_lft + age -
- idev->desync_factor;
- tmp_prefered_lft = min_t(__u32, ifp->prefered_lft, tmp_prefered_lft);
- tmp_plen = ifp->prefix_len;
+ cfg.preferred_lft = cnf_temp_preferred_lft + age - idev->desync_factor;
+ cfg.preferred_lft = min_t(__u32, ifp->prefered_lft, cfg.preferred_lft);
+
+ cfg.plen = ifp->prefix_len;
tmp_tstamp = ifp->tstamp;
spin_unlock_bh(&ifp->lock);
@@ -1346,21 +1343,23 @@ retry:
* temporary addresses being generated.
*/
age = (now - tmp_tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ;
- if (tmp_prefered_lft <= regen_advance + age) {
+ if (cfg.preferred_lft <= regen_advance + age) {
in6_ifa_put(ifp);
in6_dev_put(idev);
ret = -1;
goto out;
}
- addr_flags = IFA_F_TEMPORARY;
+ cfg.ifa_flags = IFA_F_TEMPORARY;
/* set in addrconf_prefix_rcv() */
if (ifp->flags & IFA_F_OPTIMISTIC)
- addr_flags |= IFA_F_OPTIMISTIC;
+ cfg.ifa_flags |= IFA_F_OPTIMISTIC;
+
+ cfg.pfx = &addr;
+ cfg.scope = ipv6_addr_scope(cfg.pfx);
+ cfg.rt_priority = 0;
- ift = ipv6_add_addr(idev, &addr, NULL, tmp_plen,
- ipv6_addr_scope(&addr), addr_flags,
- tmp_valid_lft, tmp_prefered_lft, block, NULL);
+ ift = ipv6_add_addr(idev, &cfg, block, NULL);
if (IS_ERR(ift)) {
in6_ifa_put(ifp);
in6_dev_put(idev);
@@ -2031,13 +2030,17 @@ void addrconf_dad_failure(struct sk_buff *skb, struct inet6_ifaddr *ifp)
spin_lock_bh(&ifp->lock);
if (ifp->flags & IFA_F_STABLE_PRIVACY) {
- int scope = ifp->scope;
- u32 flags = ifp->flags;
struct in6_addr new_addr;
struct inet6_ifaddr *ifp2;
- u32 valid_lft, preferred_lft;
- int pfxlen = ifp->prefix_len;
int retries = ifp->stable_privacy_retry + 1;
+ struct ifa6_config cfg = {
+ .pfx = &new_addr,
+ .plen = ifp->prefix_len,
+ .ifa_flags = ifp->flags,
+ .valid_lft = ifp->valid_lft,
+ .preferred_lft = ifp->prefered_lft,
+ .scope = ifp->scope,
+ };
if (retries > net->ipv6.sysctl.idgen_retries) {
net_info_ratelimited("%s: privacy stable address generation failed because of DAD conflicts!\n",
@@ -2050,9 +2053,6 @@ void addrconf_dad_failure(struct sk_buff *skb, struct inet6_ifaddr *ifp)
idev))
goto errdad;
- valid_lft = ifp->valid_lft;
- preferred_lft = ifp->prefered_lft;
-
spin_unlock_bh(&ifp->lock);
if (idev->cnf.max_addresses &&
@@ -2063,9 +2063,7 @@ void addrconf_dad_failure(struct sk_buff *skb, struct inet6_ifaddr *ifp)
net_info_ratelimited("%s: generating new stable privacy address because of DAD conflict\n",
ifp->idev->dev->name);
- ifp2 = ipv6_add_addr(idev, &new_addr, NULL, pfxlen,
- scope, flags, valid_lft,
- preferred_lft, false, NULL);
+ ifp2 = ipv6_add_addr(idev, &cfg, false, NULL);
if (IS_ERR(ifp2))
goto lock_errdad;
@@ -2318,12 +2316,13 @@ static void ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpad
*/
static void
-addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
- unsigned long expires, u32 flags, gfp_t gfp_flags)
+addrconf_prefix_route(struct in6_addr *pfx, int plen, u32 metric,
+ struct net_device *dev, unsigned long expires,
+ u32 flags, gfp_t gfp_flags)
{
struct fib6_config cfg = {
.fc_table = l3mdev_fib_table(dev) ? : RT6_TABLE_PREFIX,
- .fc_metric = IP6_RT_PRIO_ADDRCONF,
+ .fc_metric = metric ? : IP6_RT_PRIO_ADDRCONF,
.fc_ifindex = dev->ifindex,
.fc_expires = expires,
.fc_dst_len = plen,
@@ -2507,12 +2506,20 @@ int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
if (!ifp && valid_lft) {
int max_addresses = in6_dev->cnf.max_addresses;
+ struct ifa6_config cfg = {
+ .pfx = addr,
+ .plen = pinfo->prefix_len,
+ .ifa_flags = addr_flags,
+ .valid_lft = valid_lft,
+ .preferred_lft = prefered_lft,
+ .scope = addr_type & IPV6_ADDR_SCOPE_MASK,
+ };
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
if ((net->ipv6.devconf_all->optimistic_dad ||
in6_dev->cnf.optimistic_dad) &&
!net->ipv6.devconf_all->forwarding && sllao)
- addr_flags |= IFA_F_OPTIMISTIC;
+ cfg.ifa_flags |= IFA_F_OPTIMISTIC;
#endif
/* Do not allow to create too much of autoconfigured
@@ -2520,11 +2527,7 @@ int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
*/
if (!max_addresses ||
ipv6_count_addresses(in6_dev) < max_addresses)
- ifp = ipv6_add_addr(in6_dev, addr, NULL,
- pinfo->prefix_len,
- addr_type&IPV6_ADDR_SCOPE_MASK,
- addr_flags, valid_lft,
- prefered_lft, false, NULL);
+ ifp = ipv6_add_addr(in6_dev, &cfg, false, NULL);
if (IS_ERR_OR_NULL(ifp))
return -1;
@@ -2683,7 +2686,8 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao)
expires = jiffies_to_clock_t(rt_expires);
}
addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len,
- dev, expires, flags, GFP_ATOMIC);
+ 0, dev, expires, flags,
+ GFP_ATOMIC);
}
fib6_info_release(rt);
}
@@ -2830,10 +2834,7 @@ static int ipv6_mc_config(struct sock *sk, bool join,
* Manual configuration of address on an interface
*/
static int inet6_addr_add(struct net *net, int ifindex,
- const struct in6_addr *pfx,
- const struct in6_addr *peer_pfx,
- unsigned int plen, __u32 ifa_flags,
- __u32 prefered_lft, __u32 valid_lft,
+ struct ifa6_config *cfg,
struct netlink_ext_ack *extack)
{
struct inet6_ifaddr *ifp;
@@ -2841,19 +2842,18 @@ static int inet6_addr_add(struct net *net, int ifindex,
struct net_device *dev;
unsigned long timeout;
clock_t expires;
- int scope;
u32 flags;
ASSERT_RTNL();
- if (plen > 128)
+ if (cfg->plen > 128)
return -EINVAL;
/* check the lifetime */
- if (!valid_lft || prefered_lft > valid_lft)
+ if (!cfg->valid_lft || cfg->preferred_lft > cfg->valid_lft)
return -EINVAL;
- if (ifa_flags & IFA_F_MANAGETEMPADDR && plen != 64)
+ if (cfg->ifa_flags & IFA_F_MANAGETEMPADDR && cfg->plen != 64)
return -EINVAL;
dev = __dev_get_by_index(net, ifindex);
@@ -2864,41 +2864,40 @@ static int inet6_addr_add(struct net *net, int ifindex,
if (IS_ERR(idev))
return PTR_ERR(idev);
- if (ifa_flags & IFA_F_MCAUTOJOIN) {
+ if (cfg->ifa_flags & IFA_F_MCAUTOJOIN) {
int ret = ipv6_mc_config(net->ipv6.mc_autojoin_sk,
- true, pfx, ifindex);
+ true, cfg->pfx, ifindex);
if (ret < 0)
return ret;
}
- scope = ipv6_addr_scope(pfx);
+ cfg->scope = ipv6_addr_scope(cfg->pfx);
- timeout = addrconf_timeout_fixup(valid_lft, HZ);
+ timeout = addrconf_timeout_fixup(cfg->valid_lft, HZ);
if (addrconf_finite_timeout(timeout)) {
expires = jiffies_to_clock_t(timeout * HZ);
- valid_lft = timeout;
+ cfg->valid_lft = timeout;
flags = RTF_EXPIRES;
} else {
expires = 0;
flags = 0;
- ifa_flags |= IFA_F_PERMANENT;
+ cfg->ifa_flags |= IFA_F_PERMANENT;
}
- timeout = addrconf_timeout_fixup(prefered_lft, HZ);
+ timeout = addrconf_timeout_fixup(cfg->preferred_lft, HZ);
if (addrconf_finite_timeout(timeout)) {
if (timeout == 0)
- ifa_flags |= IFA_F_DEPRECATED;
- prefered_lft = timeout;
+ cfg->ifa_flags |= IFA_F_DEPRECATED;
+ cfg->preferred_lft = timeout;
}
- ifp = ipv6_add_addr(idev, pfx, peer_pfx, plen, scope, ifa_flags,
- valid_lft, prefered_lft, true, extack);
-
+ ifp = ipv6_add_addr(idev, cfg, true, extack);
if (!IS_ERR(ifp)) {
- if (!(ifa_flags & IFA_F_NOPREFIXROUTE)) {
- addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev,
- expires, flags, GFP_KERNEL);
+ if (!(cfg->ifa_flags & IFA_F_NOPREFIXROUTE)) {
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
+ ifp->rt_priority, dev, expires,
+ flags, GFP_KERNEL);
}
/* Send a netlink notification if DAD is enabled and
@@ -2912,15 +2911,15 @@ static int inet6_addr_add(struct net *net, int ifindex,
* manually configured addresses
*/
addrconf_dad_start(ifp);
- if (ifa_flags & IFA_F_MANAGETEMPADDR)
- manage_tempaddrs(idev, ifp, valid_lft, prefered_lft,
- true, jiffies);
+ if (cfg->ifa_flags & IFA_F_MANAGETEMPADDR)
+ manage_tempaddrs(idev, ifp, cfg->valid_lft,
+ cfg->preferred_lft, true, jiffies);
in6_ifa_put(ifp);
addrconf_verify_rtnl();
return 0;
- } else if (ifa_flags & IFA_F_MCAUTOJOIN) {
- ipv6_mc_config(net->ipv6.mc_autojoin_sk,
- false, pfx, ifindex);
+ } else if (cfg->ifa_flags & IFA_F_MCAUTOJOIN) {
+ ipv6_mc_config(net->ipv6.mc_autojoin_sk, false,
+ cfg->pfx, ifindex);
}
return PTR_ERR(ifp);
@@ -2971,6 +2970,11 @@ static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags,
int addrconf_add_ifaddr(struct net *net, void __user *arg)
{
+ struct ifa6_config cfg = {
+ .ifa_flags = IFA_F_PERMANENT,
+ .preferred_lft = INFINITY_LIFE_TIME,
+ .valid_lft = INFINITY_LIFE_TIME,
+ };
struct in6_ifreq ireq;
int err;
@@ -2980,10 +2984,11 @@ int addrconf_add_ifaddr(struct net *net, void __user *arg)
if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
return -EFAULT;
+ cfg.pfx = &ireq.ifr6_addr;
+ cfg.plen = ireq.ifr6_prefixlen;
+
rtnl_lock();
- err = inet6_addr_add(net, ireq.ifr6_ifindex, &ireq.ifr6_addr, NULL,
- ireq.ifr6_prefixlen, IFA_F_PERMANENT,
- INFINITY_LIFE_TIME, INFINITY_LIFE_TIME, NULL);
+ err = inet6_addr_add(net, ireq.ifr6_ifindex, &cfg, NULL);
rtnl_unlock();
return err;
}
@@ -3010,11 +3015,16 @@ static void add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
int plen, int scope)
{
struct inet6_ifaddr *ifp;
+ struct ifa6_config cfg = {
+ .pfx = addr,
+ .plen = plen,
+ .ifa_flags = IFA_F_PERMANENT,
+ .valid_lft = INFINITY_LIFE_TIME,
+ .preferred_lft = INFINITY_LIFE_TIME,
+ .scope = scope
+ };
- ifp = ipv6_add_addr(idev, addr, NULL, plen,
- scope, IFA_F_PERMANENT,
- INFINITY_LIFE_TIME, INFINITY_LIFE_TIME,
- true, NULL);
+ ifp = ipv6_add_addr(idev, &cfg, true, NULL);
if (!IS_ERR(ifp)) {
spin_lock_bh(&ifp->lock);
ifp->flags &= ~IFA_F_TENTATIVE;
@@ -3051,7 +3061,7 @@ static void sit_add_v4_addrs(struct inet6_dev *idev)
if (addr.s6_addr32[3]) {
add_addr(idev, &addr, plen, scope);
- addrconf_prefix_route(&addr, plen, idev->dev, 0, pflags,
+ addrconf_prefix_route(&addr, plen, 0, idev->dev, 0, pflags,
GFP_ATOMIC);
return;
}
@@ -3076,8 +3086,8 @@ static void sit_add_v4_addrs(struct inet6_dev *idev)
}
add_addr(idev, &addr, plen, flag);
- addrconf_prefix_route(&addr, plen, idev->dev, 0,
- pflags, GFP_ATOMIC);
+ addrconf_prefix_route(&addr, plen, 0, idev->dev,
+ 0, pflags, GFP_ATOMIC);
}
}
}
@@ -3104,20 +3114,26 @@ static void init_loopback(struct net_device *dev)
void addrconf_add_linklocal(struct inet6_dev *idev,
const struct in6_addr *addr, u32 flags)
{
+ struct ifa6_config cfg = {
+ .pfx = addr,
+ .plen = 64,
+ .ifa_flags = flags | IFA_F_PERMANENT,
+ .valid_lft = INFINITY_LIFE_TIME,
+ .preferred_lft = INFINITY_LIFE_TIME,
+ .scope = IFA_LINK
+ };
struct inet6_ifaddr *ifp;
- u32 addr_flags = flags | IFA_F_PERMANENT;
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
if ((dev_net(idev->dev)->ipv6.devconf_all->optimistic_dad ||
idev->cnf.optimistic_dad) &&
!dev_net(idev->dev)->ipv6.devconf_all->forwarding)
- addr_flags |= IFA_F_OPTIMISTIC;
+ cfg.ifa_flags |= IFA_F_OPTIMISTIC;
#endif
- ifp = ipv6_add_addr(idev, addr, NULL, 64, IFA_LINK, addr_flags,
- INFINITY_LIFE_TIME, INFINITY_LIFE_TIME, true, NULL);
+ ifp = ipv6_add_addr(idev, &cfg, true, NULL);
if (!IS_ERR(ifp)) {
- addrconf_prefix_route(&ifp->addr, ifp->prefix_len, idev->dev,
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len, 0, idev->dev,
0, 0, GFP_ATOMIC);
addrconf_dad_start(ifp);
in6_ifa_put(ifp);
@@ -3233,7 +3249,7 @@ static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route)
addrconf_add_linklocal(idev, &addr,
IFA_F_STABLE_PRIVACY);
else if (prefix_route)
- addrconf_prefix_route(&addr, 64, idev->dev,
+ addrconf_prefix_route(&addr, 64, 0, idev->dev,
0, 0, GFP_KERNEL);
break;
case IN6_ADDR_GEN_MODE_EUI64:
@@ -3244,7 +3260,7 @@ static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route)
if (ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) == 0)
addrconf_add_linklocal(idev, &addr, 0);
else if (prefix_route)
- addrconf_prefix_route(&addr, 64, idev->dev,
+ addrconf_prefix_route(&addr, 64, 0, idev->dev,
0, 0, GFP_KERNEL);
break;
case IN6_ADDR_GEN_MODE_NONE:
@@ -3364,7 +3380,8 @@ static int fixup_permanent_addr(struct net *net,
if (!(ifp->flags & IFA_F_NOPREFIXROUTE)) {
addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
- idev->dev, 0, 0, GFP_ATOMIC);
+ ifp->rt_priority, idev->dev, 0, 0,
+ GFP_ATOMIC);
}
if (ifp->state == INET6_IFADDR_STATE_PREDAD)
@@ -4484,6 +4501,7 @@ static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
[IFA_LOCAL] = { .len = sizeof(struct in6_addr) },
[IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) },
[IFA_FLAGS] = { .len = sizeof(u32) },
+ [IFA_RT_PRIORITY] = { .len = sizeof(u32) },
};
static int
@@ -4516,8 +4534,38 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh,
ifm->ifa_prefixlen);
}
-static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags,
- u32 prefered_lft, u32 valid_lft)
+static int modify_prefix_route(struct inet6_ifaddr *ifp,
+ unsigned long expires, u32 flags)
+{
+ struct fib6_info *f6i;
+
+ f6i = addrconf_get_prefix_route(&ifp->addr,
+ ifp->prefix_len,
+ ifp->idev->dev,
+ 0, RTF_GATEWAY | RTF_DEFAULT);
+ if (!f6i)
+ return -ENOENT;
+
+ if (f6i->fib6_metric != ifp->rt_priority) {
+ /* add new one */
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
+ ifp->rt_priority, ifp->idev->dev,
+ expires, flags, GFP_KERNEL);
+ /* delete old one */
+ ip6_del_rt(dev_net(ifp->idev->dev), f6i);
+ } else {
+ if (!expires)
+ fib6_clean_expires(f6i);
+ else
+ fib6_set_expires(f6i, expires);
+
+ fib6_info_release(f6i);
+ }
+
+ return 0;
+}
+
+static int inet6_addr_modify(struct inet6_ifaddr *ifp, struct ifa6_config *cfg)
{
u32 flags;
clock_t expires;
@@ -4527,32 +4575,32 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags,
ASSERT_RTNL();
- if (!valid_lft || (prefered_lft > valid_lft))
+ if (!cfg->valid_lft || cfg->preferred_lft > cfg->valid_lft)
return -EINVAL;
- if (ifa_flags & IFA_F_MANAGETEMPADDR &&
+ if (cfg->ifa_flags & IFA_F_MANAGETEMPADDR &&
(ifp->flags & IFA_F_TEMPORARY || ifp->prefix_len != 64))
return -EINVAL;
if (!(ifp->flags & IFA_F_TENTATIVE) || ifp->flags & IFA_F_DADFAILED)
- ifa_flags &= ~IFA_F_OPTIMISTIC;
+ cfg->ifa_flags &= ~IFA_F_OPTIMISTIC;
- timeout = addrconf_timeout_fixup(valid_lft, HZ);
+ timeout = addrconf_timeout_fixup(cfg->valid_lft, HZ);
if (addrconf_finite_timeout(timeout)) {
expires = jiffies_to_clock_t(timeout * HZ);
- valid_lft = timeout;
+ cfg->valid_lft = timeout;
flags = RTF_EXPIRES;
} else {
expires = 0;
flags = 0;
- ifa_flags |= IFA_F_PERMANENT;
+ cfg->ifa_flags |= IFA_F_PERMANENT;
}
- timeout = addrconf_timeout_fixup(prefered_lft, HZ);
+ timeout = addrconf_timeout_fixup(cfg->preferred_lft, HZ);
if (addrconf_finite_timeout(timeout)) {
if (timeout == 0)
- ifa_flags |= IFA_F_DEPRECATED;
- prefered_lft = timeout;
+ cfg->ifa_flags |= IFA_F_DEPRECATED;
+ cfg->preferred_lft = timeout;
}
spin_lock_bh(&ifp->lock);
@@ -4562,19 +4610,30 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags,
ifp->flags &= ~(IFA_F_DEPRECATED | IFA_F_PERMANENT | IFA_F_NODAD |
IFA_F_HOMEADDRESS | IFA_F_MANAGETEMPADDR |
IFA_F_NOPREFIXROUTE);
- ifp->flags |= ifa_flags;
+ ifp->flags |= cfg->ifa_flags;
ifp->tstamp = jiffies;
- ifp->valid_lft = valid_lft;
- ifp->prefered_lft = prefered_lft;
+ ifp->valid_lft = cfg->valid_lft;
+ ifp->prefered_lft = cfg->preferred_lft;
+
+ if (cfg->rt_priority && cfg->rt_priority != ifp->rt_priority)
+ ifp->rt_priority = cfg->rt_priority;
spin_unlock_bh(&ifp->lock);
if (!(ifp->flags&IFA_F_TENTATIVE))
ipv6_ifa_notify(0, ifp);
- if (!(ifa_flags & IFA_F_NOPREFIXROUTE)) {
- addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
- ifp->idev->dev, expires, flags,
- GFP_KERNEL);
+ if (!(cfg->ifa_flags & IFA_F_NOPREFIXROUTE)) {
+ int rc = -ENOENT;
+
+ if (had_prefixroute)
+ rc = modify_prefix_route(ifp, expires, flags);
+
+ /* prefix route could have been deleted; if so restore it */
+ if (rc == -ENOENT) {
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
+ ifp->rt_priority, ifp->idev->dev,
+ expires, flags, GFP_KERNEL);
+ }
} else if (had_prefixroute) {
enum cleanup_prefix_rt_t action;
unsigned long rt_expires;
@@ -4590,10 +4649,14 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags,
}
if (was_managetempaddr || ifp->flags & IFA_F_MANAGETEMPADDR) {
- if (was_managetempaddr && !(ifp->flags & IFA_F_MANAGETEMPADDR))
- valid_lft = prefered_lft = 0;
- manage_tempaddrs(ifp->idev, ifp, valid_lft, prefered_lft,
- !was_managetempaddr, jiffies);
+ if (was_managetempaddr &&
+ !(ifp->flags & IFA_F_MANAGETEMPADDR)) {
+ cfg->valid_lft = 0;
+ cfg->preferred_lft = 0;
+ }
+ manage_tempaddrs(ifp->idev, ifp, cfg->valid_lft,
+ cfg->preferred_lft, !was_managetempaddr,
+ jiffies);
}
addrconf_verify_rtnl();
@@ -4608,12 +4671,11 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh,
struct net *net = sock_net(skb->sk);
struct ifaddrmsg *ifm;
struct nlattr *tb[IFA_MAX+1];
- struct in6_addr *pfx, *peer_pfx;
+ struct in6_addr *peer_pfx;
struct inet6_ifaddr *ifa;
struct net_device *dev;
struct inet6_dev *idev;
- u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME;
- u32 ifa_flags;
+ struct ifa6_config cfg;
int err;
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy,
@@ -4621,60 +4683,70 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err < 0)
return err;
+ memset(&cfg, 0, sizeof(cfg));
+
ifm = nlmsg_data(nlh);
- pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
- if (!pfx)
+ cfg.pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
+ if (!cfg.pfx)
return -EINVAL;
+ cfg.peer_pfx = peer_pfx;
+ cfg.plen = ifm->ifa_prefixlen;
+ if (tb[IFA_RT_PRIORITY])
+ cfg.rt_priority = nla_get_u32(tb[IFA_RT_PRIORITY]);
+
+ cfg.valid_lft = INFINITY_LIFE_TIME;
+ cfg.preferred_lft = INFINITY_LIFE_TIME;
+
if (tb[IFA_CACHEINFO]) {
struct ifa_cacheinfo *ci;
ci = nla_data(tb[IFA_CACHEINFO]);
- valid_lft = ci->ifa_valid;
- preferred_lft = ci->ifa_prefered;
- } else {
- preferred_lft = INFINITY_LIFE_TIME;
- valid_lft = INFINITY_LIFE_TIME;
+ cfg.valid_lft = ci->ifa_valid;
+ cfg.preferred_lft = ci->ifa_prefered;
}
dev = __dev_get_by_index(net, ifm->ifa_index);
if (!dev)
return -ENODEV;
- ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags;
+ if (tb[IFA_FLAGS])
+ cfg.ifa_flags = nla_get_u32(tb[IFA_FLAGS]);
+ else
+ cfg.ifa_flags = ifm->ifa_flags;
/* We ignore other flags so far. */
- ifa_flags &= IFA_F_NODAD | IFA_F_HOMEADDRESS | IFA_F_MANAGETEMPADDR |
- IFA_F_NOPREFIXROUTE | IFA_F_MCAUTOJOIN | IFA_F_OPTIMISTIC;
+ cfg.ifa_flags &= IFA_F_NODAD | IFA_F_HOMEADDRESS |
+ IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE |
+ IFA_F_MCAUTOJOIN | IFA_F_OPTIMISTIC;
idev = ipv6_find_idev(dev);
if (IS_ERR(idev))
return PTR_ERR(idev);
if (!ipv6_allow_optimistic_dad(net, idev))
- ifa_flags &= ~IFA_F_OPTIMISTIC;
+ cfg.ifa_flags &= ~IFA_F_OPTIMISTIC;
- if (ifa_flags & IFA_F_NODAD && ifa_flags & IFA_F_OPTIMISTIC) {
+ if (cfg.ifa_flags & IFA_F_NODAD &&
+ cfg.ifa_flags & IFA_F_OPTIMISTIC) {
NL_SET_ERR_MSG(extack, "IFA_F_NODAD and IFA_F_OPTIMISTIC are mutually exclusive");
return -EINVAL;
}
- ifa = ipv6_get_ifaddr(net, pfx, dev, 1);
+ ifa = ipv6_get_ifaddr(net, cfg.pfx, dev, 1);
if (!ifa) {
/*
* It would be best to check for !NLM_F_CREATE here but
* userspace already relies on not having to provide this.
*/
- return inet6_addr_add(net, ifm->ifa_index, pfx, peer_pfx,
- ifm->ifa_prefixlen, ifa_flags,
- preferred_lft, valid_lft, extack);
+ return inet6_addr_add(net, ifm->ifa_index, &cfg, extack);
}
if (nlh->nlmsg_flags & NLM_F_EXCL ||
!(nlh->nlmsg_flags & NLM_F_REPLACE))
err = -EEXIST;
else
- err = inet6_addr_modify(ifa, ifa_flags, preferred_lft, valid_lft);
+ err = inet6_addr_modify(ifa, &cfg);
in6_ifa_put(ifa);
@@ -4725,7 +4797,8 @@ static inline int inet6_ifaddr_msgsize(void)
+ nla_total_size(16) /* IFA_LOCAL */
+ nla_total_size(16) /* IFA_ADDRESS */
+ nla_total_size(sizeof(struct ifa_cacheinfo))
- + nla_total_size(4) /* IFA_FLAGS */;
+ + nla_total_size(4) /* IFA_FLAGS */
+ + nla_total_size(4) /* IFA_RT_PRIORITY */;
}
static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
@@ -4771,6 +4844,10 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
if (nla_put_in6_addr(skb, IFA_ADDRESS, &ifa->addr) < 0)
goto error;
+ if (ifa->rt_priority &&
+ nla_put_u32(skb, IFA_RT_PRIORITY, ifa->rt_priority))
+ goto error;
+
if (put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0)
goto error;
@@ -5615,7 +5692,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
if (ifp->idev->cnf.forwarding)
addrconf_join_anycast(ifp);
if (!ipv6_addr_any(&ifp->peer_addr))
- addrconf_prefix_route(&ifp->peer_addr, 128,
+ addrconf_prefix_route(&ifp->peer_addr, 128, 0,
ifp->idev->dev, 0, 0,
GFP_ATOMIC);
break;
diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index e7d76fbc36e9..9780c5a2d73f 100755..100644
--- a/tools/testing/selftests/net/fib_tests.sh
+++ b/tools/testing/selftests/net/fib_tests.sh
@@ -6,7 +6,8 @@
ret=0
-TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt"
+# all tests in this script. Can be overridden with -t option
+TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric"
VERBOSE=0
PAUSE_ON_FAIL=no
PAUSE=no
@@ -642,6 +643,8 @@ check_route6()
local rc=0
out=$($IP -6 ro ls match ${pfx} | sed -e 's/ pref medium//')
+ [ "${out}" = "${expected}" ] && return 0
+
if [ -z "${out}" ]; then
if [ "$VERBOSE" = "1" ]; then
printf "\nNo route entry found\n"
@@ -911,6 +914,98 @@ ipv6_route_test()
route_cleanup
}
+ip_addr_metric_check()
+{
+ ip addr help 2>&1 | grep -q metric
+ if [ $? -ne 0 ]; then
+ echo "iproute2 command does not support metric for addresses. Skipping test"
+ return 1
+ fi
+
+ return 0
+}
+
+ipv6_addr_metric_test()
+{
+ local rc
+
+ echo
+ echo "IPv6 prefix route tests"
+
+ ip_addr_metric_check || return 1
+
+ setup
+
+ set -e
+ $IP li add dummy1 type dummy
+ $IP li add dummy2 type dummy
+ $IP li set dummy1 up
+ $IP li set dummy2 up
+
+ # default entry is metric 256
+ run_cmd "$IP -6 addr add dev dummy1 2001:db8:104::1/64"
+ run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::2/64"
+ set +e
+
+ check_route6 "2001:db8:104::/64 dev dummy1 proto kernel metric 256 2001:db8:104::/64 dev dummy2 proto kernel metric 256"
+ log_test $? 0 "Default metric"
+
+ set -e
+ run_cmd "$IP -6 addr flush dev dummy1"
+ run_cmd "$IP -6 addr add dev dummy1 2001:db8:104::1/64 metric 257"
+ set +e
+
+ check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 256 2001:db8:104::/64 dev dummy1 proto kernel metric 257"
+ log_test $? 0 "User specified metric on first device"
+
+ set -e
+ run_cmd "$IP -6 addr flush dev dummy2"
+ run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::2/64 metric 258"
+ set +e
+
+ check_route6 "2001:db8:104::/64 dev dummy1 proto kernel metric 257 2001:db8:104::/64 dev dummy2 proto kernel metric 258"
+ log_test $? 0 "User specified metric on second device"
+
+ run_cmd "$IP -6 addr del dev dummy1 2001:db8:104::1/64 metric 257"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 258"
+ rc=$?
+ fi
+ log_test $rc 0 "Delete of address on first device"
+
+ run_cmd "$IP -6 addr change dev dummy2 2001:db8:104::2/64 metric 259"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 259"
+ rc=$?
+ fi
+ log_test $rc 0 "Modify metric of address"
+
+ # verify prefix route removed on down
+ run_cmd "ip netns exec testns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1"
+ run_cmd "$IP li set dev dummy2 down"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route6 ""
+ rc=$?
+ fi
+ log_test $rc 0 "Prefix route removed on link down"
+
+ # verify prefix route re-inserted with assigned metric
+ run_cmd "$IP li set dev dummy2 up"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 259"
+ rc=$?
+ fi
+ log_test $rc 0 "Prefix route with metric on link up"
+
+ $IP li del dummy1
+ $IP li del dummy2
+ cleanup
+}
+
# add route for a prefix, flushing any existing routes first
# expected to be the first step of a test
add_route()
@@ -955,6 +1050,8 @@ check_route()
local rc=0
out=$($IP ro ls match ${pfx})
+ [ "${out}" = "${expected}" ] && return 0
+
if [ -z "${out}" ]; then
if [ "$VERBOSE" = "1" ]; then
printf "\nNo route entry found\n"
@@ -1181,6 +1278,86 @@ ipv4_route_test()
route_cleanup
}
+ipv4_addr_metric_test()
+{
+ local rc
+
+ echo
+ echo "IPv4 prefix route tests"
+
+ ip_addr_metric_check || return 1
+
+ setup
+
+ set -e
+ $IP li add dummy1 type dummy
+ $IP li add dummy2 type dummy
+ $IP li set dummy1 up
+ $IP li set dummy2 up
+
+ # default entry is metric 256
+ run_cmd "$IP addr add dev dummy1 172.16.104.1/24"
+ run_cmd "$IP addr add dev dummy2 172.16.104.2/24"
+ set +e
+
+ check_route "172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2"
+ log_test $? 0 "Default metric"
+
+ set -e
+ run_cmd "$IP addr flush dev dummy1"
+ run_cmd "$IP addr add dev dummy1 172.16.104.1/24 metric 257"
+ set +e
+
+ check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 metric 257"
+ log_test $? 0 "User specified metric on first device"
+
+ set -e
+ run_cmd "$IP addr flush dev dummy2"
+ run_cmd "$IP addr add dev dummy2 172.16.104.2/24 metric 258"
+ set +e
+
+ check_route "172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 metric 257 172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 258"
+ log_test $? 0 "User specified metric on second device"
+
+ run_cmd "$IP addr del dev dummy1 172.16.104.1/24 metric 257"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 258"
+ rc=$?
+ fi
+ log_test $rc 0 "Delete of address on first device"
+
+ run_cmd "$IP addr change dev dummy2 172.16.104.2/24 metric 259"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 259"
+ rc=$?
+ fi
+ log_test $rc 0 "Modify metric of address"
+
+ # verify prefix route removed on down
+ run_cmd "$IP li set dev dummy2 down"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route ""
+ rc=$?
+ fi
+ log_test $rc 0 "Prefix route removed on link down"
+
+ # verify prefix route re-inserted with assigned metric
+ run_cmd "$IP li set dev dummy2 up"
+ rc=$?
+ if [ $rc -eq 0 ]; then
+ check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 259"
+ rc=$?
+ fi
+ log_test $rc 0 "Prefix route with metric on link up"
+
+ $IP li del dummy1
+ $IP li del dummy2
+ cleanup
+}
+
################################################################################
# usage
@@ -1245,6 +1422,8 @@ do
fib_nexthop_test|nexthop) fib_nexthop_test;;
ipv6_route_test|ipv6_rt) ipv6_route_test;;
ipv4_route_test|ipv4_rt) ipv4_route_test;;
+ ipv6_addr_metric) ipv6_addr_metric_test;;
+ ipv4_addr_metric) ipv4_addr_metric_test;;
help) echo "Test names: $TESTS"; exit 0;;
esac
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.