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[IPV4]: Remove extra argument from arp_ignore.

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arp_ignore has two arguments: dev & in_dev. dev is used for
inet_confirm_addr calling only.

inet_confirm_addr, in turn, either gets in_dev from the device passed
or iterates over all network devices if the device passed is NULL. It
seems logical to directly pass in_dev into inet_confirm_addr.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis V. Lunev 2008-01-14 23:05:55 -08:00 • committed by David S. Miller
parent 06f0511df1
commit 9bd85e3264
3 changed files with 12 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/linux/inetdevice.h
View file

@ -135,7 +135,7 @@ extern int devinet_ioctl(unsigned int cmd, void __user *);
extern void devinet_init(void); extern void devinet_init(void);
extern struct in_device *inetdev_by_index(int); extern struct in_device *inetdev_by_index(int);
extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope); extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
extern __be32 inet_confirm_addr(const struct net_device *dev, __be32 dst, __be32 local, int scope); extern __be32 inet_confirm_addr(struct in_device *in_dev, __be32 dst, __be32 local, int scope);
extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask); extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa) static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)

11
net/ipv4/arp.c
View file

@ -382,8 +382,7 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)
read_unlock_bh(&neigh->lock); read_unlock_bh(&neigh->lock);
} }
static int arp_ignore(struct in_device *in_dev, struct net_device *dev, static int arp_ignore(struct in_device *in_dev, __be32 sip, __be32 tip)
__be32 sip, __be32 tip)
{ {
int scope; int scope;
@ -403,7 +402,7 @@ static int arp_ignore(struct in_device *in_dev, struct net_device *dev,
case 3: /* Do not reply for scope host addresses */ case 3: /* Do not reply for scope host addresses */
sip = 0; sip = 0;
scope = RT_SCOPE_LINK; scope = RT_SCOPE_LINK;
dev = NULL; in_dev = NULL;
break; break;
case 4: /* Reserved */ case 4: /* Reserved */
case 5: case 5:
@ -415,7 +414,7 @@ static int arp_ignore(struct in_device *in_dev, struct net_device *dev,
default: default:
return 0; return 0;
} }
return !inet_confirm_addr(dev, sip, tip, scope); return !inet_confirm_addr(in_dev, sip, tip, scope);
} }
static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev) static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev)
@ -807,7 +806,7 @@ static int arp_process(struct sk_buff *skb)
if (sip == 0) { if (sip == 0) {
if (arp->ar_op == htons(ARPOP_REQUEST) && if (arp->ar_op == htons(ARPOP_REQUEST) &&
inet_addr_type(&init_net, tip) == RTN_LOCAL && inet_addr_type(&init_net, tip) == RTN_LOCAL &&
!arp_ignore(in_dev,dev,sip,tip)) !arp_ignore(in_dev, sip, tip))
arp_send(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha, arp_send(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha,
dev->dev_addr, sha); dev->dev_addr, sha);
goto out; goto out;
@ -825,7 +824,7 @@ static int arp_process(struct sk_buff *skb)
int dont_send = 0; int dont_send = 0;
if (!dont_send) if (!dont_send)
dont_send |= arp_ignore(in_dev,dev,sip,tip); dont_send |= arp_ignore(in_dev,sip,tip);
if (!dont_send && IN_DEV_ARPFILTER(in_dev)) if (!dont_send && IN_DEV_ARPFILTER(in_dev))
dont_send |= arp_filter(sip,tip,dev); dont_send |= arp_filter(sip,tip,dev);
if (!dont_send) if (!dont_send)

17
net/ipv4/devinet.c
View file

@ -968,24 +968,19 @@ static __be32 confirm_addr_indev(struct in_device *in_dev, __be32 dst,
/* /*
* Confirm that local IP address exists using wildcards: * Confirm that local IP address exists using wildcards:
* - dev: only on this interface, 0=any interface * - in_dev: only on this interface, 0=any interface
* - dst: only in the same subnet as dst, 0=any dst * - dst: only in the same subnet as dst, 0=any dst
* - local: address, 0=autoselect the local address * - local: address, 0=autoselect the local address
* - scope: maximum allowed scope value for the local address * - scope: maximum allowed scope value for the local address
*/ */
__be32 inet_confirm_addr(const struct net_device *dev, __be32 dst, __be32 local, int scope) __be32 inet_confirm_addr(struct in_device *in_dev,
__be32 dst, __be32 local, int scope)
{ {
__be32 addr = 0; __be32 addr = 0;
struct in_device *in_dev; struct net_device *dev;
if (dev) { if (in_dev != NULL)
rcu_read_lock(); return confirm_addr_indev(in_dev, dst, local, scope);
if ((in_dev = __in_dev_get_rcu(dev)))
addr = confirm_addr_indev(in_dev, dst, local, scope);
rcu_read_unlock();
return addr;
}
read_lock(&dev_base_lock); read_lock(&dev_base_lock);
rcu_read_lock(); rcu_read_lock();