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driver: ipvlan: Define common functions to decrease duplicated codes used to add or del IP address

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There are some duplicated codes in ipvlan_add_addr6/4 and
ipvlan_del_addr6/4. Now define two common functions ipvlan_add_addr
and ipvlan_del_addr to decrease the duplicated codes.
It could be helful to maintain the codes.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gao Feng 2016-12-28 16:46:51 +08:00 committed by David S. Miller
parent c4907c6ebb
commit 8667398277
1 changed files with 29 additions and 39 deletions
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68
drivers/net/ipvlan/ipvlan_main.c
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@ -674,23 +674,22 @@ static int ipvlan_device_event(struct notifier_block *unused,
return NOTIFY_DONE;
}
static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
static int ipvlan_add_addr(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6)
{
struct ipvl_addr *addr;
if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) {
netif_err(ipvlan, ifup, ipvlan->dev,
"Failed to add IPv6=%pI6c addr for %s intf\n",
ip6_addr, ipvlan->dev->name);
return -EINVAL;
}
addr = kzalloc(sizeof(struct ipvl_addr), GFP_ATOMIC);
if (!addr)
return -ENOMEM;
addr->master = ipvlan;
memcpy(&addr->ip6addr, ip6_addr, sizeof(struct in6_addr));
addr->atype = IPVL_IPV6;
if (is_v6) {
memcpy(&addr->ip6addr, iaddr, sizeof(struct in6_addr));
addr->atype = IPVL_IPV6;
} else {
memcpy(&addr->ip4addr, iaddr, sizeof(struct in_addr));
addr->atype = IPVL_IPV4;
}
list_add_tail(&addr->anode, &ipvlan->addrs);
/* If the interface is not up, the address will be added to the hash
@ -702,11 +701,11 @@ static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
return 0;
}
static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
static void ipvlan_del_addr(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6)
{
struct ipvl_addr *addr;
addr = ipvlan_find_addr(ipvlan, ip6_addr, true);
addr = ipvlan_find_addr(ipvlan, iaddr, is_v6);
if (!addr)
return;
@ -717,6 +716,23 @@ static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
return;
}
static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
{
if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) {
netif_err(ipvlan, ifup, ipvlan->dev,
"Failed to add IPv6=%pI6c addr for %s intf\n",
ip6_addr, ipvlan->dev->name);
return -EINVAL;
}
return ipvlan_add_addr(ipvlan, ip6_addr, true);
}
static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
{
return ipvlan_del_addr(ipvlan, ip6_addr, true);
}
static int ipvlan_addr6_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
@ -750,45 +766,19 @@ static int ipvlan_addr6_event(struct notifier_block *unused,
static int ipvlan_add_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr)
{
struct ipvl_addr *addr;
if (ipvlan_addr_busy(ipvlan->port, ip4_addr, false)) {
netif_err(ipvlan, ifup, ipvlan->dev,
"Failed to add IPv4=%pI4 on %s intf.\n",
ip4_addr, ipvlan->dev->name);
return -EINVAL;
}
addr = kzalloc(sizeof(struct ipvl_addr), GFP_KERNEL);
if (!addr)
return -ENOMEM;
addr->master = ipvlan;
memcpy(&addr->ip4addr, ip4_addr, sizeof(struct in_addr));
addr->atype = IPVL_IPV4;
list_add_tail(&addr->anode, &ipvlan->addrs);
/* If the interface is not up, the address will be added to the hash
* list by ipvlan_open.
*/
if (netif_running(ipvlan->dev))
ipvlan_ht_addr_add(ipvlan, addr);
return 0;
return ipvlan_add_addr(ipvlan, ip4_addr, false);
}
static void ipvlan_del_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr)
{
struct ipvl_addr *addr;
addr = ipvlan_find_addr(ipvlan, ip4_addr, false);
if (!addr)
return;
ipvlan_ht_addr_del(addr);
list_del(&addr->anode);
kfree_rcu(addr, rcu);
return;
return ipvlan_del_addr(ipvlan, ip4_addr, false);
}
static int ipvlan_addr4_event(struct notifier_block *unused,