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Diffstat (limited to 'net/ipv6/addrconf.c')
-rw-r--r--net/ipv6/addrconf.c83
1 files changed, 38 insertions, 45 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 6bc85f7c31e3..480e68422efb 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -127,8 +127,8 @@ static inline void addrconf_sysctl_unregister(struct inet6_dev *idev)
#endif
#ifdef CONFIG_IPV6_PRIVACY
-static int __ipv6_regen_rndid(struct inet6_dev *idev);
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
+static void __ipv6_regen_rndid(struct inet6_dev *idev);
+static void __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
static void ipv6_regen_rndid(unsigned long data);
#endif
@@ -788,10 +788,16 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
struct in6_addr prefix;
struct rt6_info *rt;
struct net *net = dev_net(ifp->idev->dev);
+ struct flowi6 fl6 = {};
+
ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
- rt = rt6_lookup(net, &prefix, NULL, ifp->idev->dev->ifindex, 1);
+ fl6.flowi6_oif = ifp->idev->dev->ifindex;
+ fl6.daddr = prefix;
+ rt = (struct rt6_info *)ip6_route_lookup(net, &fl6,
+ RT6_LOOKUP_F_IFACE);
- if (rt && addrconf_is_prefix_route(rt)) {
+ if (rt != net->ipv6.ip6_null_entry &&
+ addrconf_is_prefix_route(rt)) {
if (onlink == 0) {
ip6_del_rt(rt);
rt = NULL;
@@ -852,16 +858,7 @@ retry:
}
in6_ifa_hold(ifp);
memcpy(addr.s6_addr, ifp->addr.s6_addr, 8);
- if (__ipv6_try_regen_rndid(idev, tmpaddr) < 0) {
- spin_unlock_bh(&ifp->lock);
- write_unlock(&idev->lock);
- pr_warn("%s: regeneration of randomized interface id failed\n",
- __func__);
- in6_ifa_put(ifp);
- in6_dev_put(idev);
- ret = -1;
- goto out;
- }
+ __ipv6_try_regen_rndid(idev, tmpaddr);
memcpy(&addr.s6_addr[8], idev->rndid, 8);
age = (now - ifp->tstamp) / HZ;
tmp_valid_lft = min_t(__u32,
@@ -1079,8 +1076,10 @@ static int ipv6_get_saddr_eval(struct net *net,
break;
case IPV6_SADDR_RULE_PREFIX:
/* Rule 8: Use longest matching prefix */
- score->matchlen = ret = ipv6_addr_diff(&score->ifa->addr,
- dst->addr);
+ ret = ipv6_addr_diff(&score->ifa->addr, dst->addr);
+ if (ret > score->ifa->prefix_len)
+ ret = score->ifa->prefix_len;
+ score->matchlen = ret;
break;
default:
ret = 0;
@@ -1093,7 +1092,7 @@ out:
return ret;
}
-int ipv6_dev_get_saddr(struct net *net, struct net_device *dst_dev,
+int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
const struct in6_addr *daddr, unsigned int prefs,
struct in6_addr *saddr)
{
@@ -1600,7 +1599,7 @@ static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev)
#ifdef CONFIG_IPV6_PRIVACY
/* (re)generation of randomized interface identifier (RFC 3041 3.2, 3.5) */
-static int __ipv6_regen_rndid(struct inet6_dev *idev)
+static void __ipv6_regen_rndid(struct inet6_dev *idev)
{
regen:
get_random_bytes(idev->rndid, sizeof(idev->rndid));
@@ -1627,8 +1626,6 @@ regen:
if ((idev->rndid[2]|idev->rndid[3]|idev->rndid[4]|idev->rndid[5]|idev->rndid[6]|idev->rndid[7]) == 0x00)
goto regen;
}
-
- return 0;
}
static void ipv6_regen_rndid(unsigned long data)
@@ -1642,8 +1639,7 @@ static void ipv6_regen_rndid(unsigned long data)
if (idev->dead)
goto out;
- if (__ipv6_regen_rndid(idev) < 0)
- goto out;
+ __ipv6_regen_rndid(idev);
expires = jiffies +
idev->cnf.temp_prefered_lft * HZ -
@@ -1664,13 +1660,10 @@ out:
in6_dev_put(idev);
}
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr)
+static void __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr)
{
- int ret = 0;
-
if (tmpaddr && memcmp(idev->rndid, &tmpaddr->s6_addr[8], 8) == 0)
- ret = __ipv6_regen_rndid(idev);
- return ret;
+ __ipv6_regen_rndid(idev);
}
#endif
@@ -1721,7 +1714,7 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
if (table == NULL)
return NULL;
- write_lock_bh(&table->tb6_lock);
+ read_lock_bh(&table->tb6_lock);
fn = fib6_locate(&table->tb6_root, pfx, plen, NULL, 0);
if (!fn)
goto out;
@@ -1736,7 +1729,7 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
break;
}
out:
- write_unlock_bh(&table->tb6_lock);
+ read_unlock_bh(&table->tb6_lock);
return rt;
}
@@ -3549,12 +3542,12 @@ static inline int inet6_ifaddr_msgsize(void)
}
static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
- u32 pid, u32 seq, int event, unsigned int flags)
+ u32 portid, u32 seq, int event, unsigned int flags)
{
struct nlmsghdr *nlh;
u32 preferred, valid;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
if (nlh == NULL)
return -EMSGSIZE;
@@ -3592,7 +3585,7 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
}
static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
- u32 pid, u32 seq, int event, u16 flags)
+ u32 portid, u32 seq, int event, u16 flags)
{
struct nlmsghdr *nlh;
u8 scope = RT_SCOPE_UNIVERSE;
@@ -3601,7 +3594,7 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE)
scope = RT_SCOPE_SITE;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
if (nlh == NULL)
return -EMSGSIZE;
@@ -3617,7 +3610,7 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
}
static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
- u32 pid, u32 seq, int event, unsigned int flags)
+ u32 portid, u32 seq, int event, unsigned int flags)
{
struct nlmsghdr *nlh;
u8 scope = RT_SCOPE_UNIVERSE;
@@ -3626,7 +3619,7 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE)
scope = RT_SCOPE_SITE;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
if (nlh == NULL)
return -EMSGSIZE;
@@ -3667,7 +3660,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
if (++ip_idx < s_ip_idx)
continue;
err = inet6_fill_ifaddr(skb, ifa,
- NETLINK_CB(cb->skb).pid,
+ NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_NEWADDR,
NLM_F_MULTI);
@@ -3683,7 +3676,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
if (ip_idx < s_ip_idx)
continue;
err = inet6_fill_ifmcaddr(skb, ifmca,
- NETLINK_CB(cb->skb).pid,
+ NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_GETMULTICAST,
NLM_F_MULTI);
@@ -3698,7 +3691,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
if (ip_idx < s_ip_idx)
continue;
err = inet6_fill_ifacaddr(skb, ifaca,
- NETLINK_CB(cb->skb).pid,
+ NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_GETANYCAST,
NLM_F_MULTI);
@@ -3820,7 +3813,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
goto errout_ifa;
}
- err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
+ err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).portid,
nlh->nlmsg_seq, RTM_NEWADDR, 0);
if (err < 0) {
/* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
@@ -3828,7 +3821,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
kfree_skb(skb);
goto errout_ifa;
}
- err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).pid);
+ err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
errout_ifa:
in6_ifa_put(ifa);
errout:
@@ -4030,14 +4023,14 @@ static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
}
static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
- u32 pid, u32 seq, int event, unsigned int flags)
+ u32 portid, u32 seq, int event, unsigned int flags)
{
struct net_device *dev = idev->dev;
struct ifinfomsg *hdr;
struct nlmsghdr *nlh;
void *protoinfo;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(*hdr), flags);
if (nlh == NULL)
return -EMSGSIZE;
@@ -4095,7 +4088,7 @@ static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
if (!idev)
goto cont;
if (inet6_fill_ifinfo(skb, idev,
- NETLINK_CB(cb->skb).pid,
+ NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_NEWLINK, NLM_F_MULTI) <= 0)
goto out;
@@ -4143,14 +4136,14 @@ static inline size_t inet6_prefix_nlmsg_size(void)
}
static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev,
- struct prefix_info *pinfo, u32 pid, u32 seq,
+ struct prefix_info *pinfo, u32 portid, u32 seq,
int event, unsigned int flags)
{
struct prefixmsg *pmsg;
struct nlmsghdr *nlh;
struct prefix_cacheinfo ci;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(*pmsg), flags);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(*pmsg), flags);
if (nlh == NULL)
return -EMSGSIZE;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-05 01:31:52 +0100