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authorDavid Ahern <dsa@cumulusnetworks.com>2015-08-28 02:07:02 +0300
committerDavid S. Miller <davem@davemloft.net>2015-08-28 23:32:36 +0300
commit5345c2e12d41f815c1009c9dee72f3d5fcfd4282 (patch)
tree65e011d6d82252a935a93044dc7bc99beb32bf90 /include/net/inetpeer.h
parentd39d14ffa24cca9f0e44aa4a63315f4c44c56a93 (diff)
downloadlinux-5345c2e12d41f815c1009c9dee72f3d5fcfd4282.tar.xz
net: Refactor inetpeer address struct
Move the inetpeer_addr_base union to inetpeer_addr and drop inetpeer_addr_base. Both the a6 and in6_addr overlays are not needed; drop the __be32 version and rename in6 to a6 for consistency with ipv4. Add a new u32 array to the union which removes the need for the typecast in the compare function and the use of a consistent arg for both ipv4 and ipv6 addresses which makes the compare function more readable. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inetpeer.h')
-rw-r--r--include/net/inetpeer.h35
1 files changed, 19 insertions, 16 deletions
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 9d9b3446731d..e34f98aa93b1 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -15,16 +15,14 @@
#include <net/ipv6.h>
#include <linux/atomic.h>
-struct inetpeer_addr_base {
+#define INETPEER_MAXKEYSZ (sizeof(struct in6_addr) / sizeof(u32))
+
+struct inetpeer_addr {
union {
__be32 a4;
- __be32 a6[4];
- struct in6_addr in6;
+ struct in6_addr a6;
+ u32 key[INETPEER_MAXKEYSZ];
};
-};
-
-struct inetpeer_addr {
- struct inetpeer_addr_base addr;
__u16 family;
};
@@ -73,25 +71,25 @@ void inet_initpeers(void) __init;
static inline void inetpeer_set_addr_v4(struct inetpeer_addr *iaddr, __be32 ip)
{
- iaddr->addr.a4 = ip;
+ iaddr->a4 = ip;
iaddr->family = AF_INET;
}
static inline __be32 inetpeer_get_addr_v4(struct inetpeer_addr *iaddr)
{
- return iaddr->addr.a4;
+ return iaddr->a4;
}
static inline void inetpeer_set_addr_v6(struct inetpeer_addr *iaddr,
struct in6_addr *in6)
{
- iaddr->addr.in6 = *in6;
+ iaddr->a6 = *in6;
iaddr->family = AF_INET6;
}
static inline struct in6_addr *inetpeer_get_addr_v6(struct inetpeer_addr *iaddr)
{
- return &iaddr->addr.in6;
+ return &iaddr->a6;
}
/* can be called with or without local BH being disabled */
@@ -105,7 +103,7 @@ static inline struct inet_peer *inet_getpeer_v4(struct inet_peer_base *base,
{
struct inetpeer_addr daddr;
- daddr.addr.a4 = v4daddr;
+ daddr.a4 = v4daddr;
daddr.family = AF_INET;
return inet_getpeer(base, &daddr, create);
}
@@ -116,7 +114,7 @@ static inline struct inet_peer *inet_getpeer_v6(struct inet_peer_base *base,
{
struct inetpeer_addr daddr;
- daddr.addr.in6 = *v6daddr;
+ daddr.a6 = *v6daddr;
daddr.family = AF_INET6;
return inet_getpeer(base, &daddr, create);
}
@@ -124,12 +122,17 @@ static inline struct inet_peer *inet_getpeer_v6(struct inet_peer_base *base,
static inline int inetpeer_addr_cmp(const struct inetpeer_addr *a,
const struct inetpeer_addr *b)
{
- int i, n = (a->family == AF_INET ? 1 : 4);
+ int i, n;
+
+ if (a->family == AF_INET)
+ n = sizeof(a->a4) / sizeof(u32);
+ else
+ n = sizeof(a->a6) / sizeof(u32);
for (i = 0; i < n; i++) {
- if (a->addr.a6[i] == b->addr.a6[i])
+ if (a->key[i] == b->key[i])
continue;
- if ((__force u32)a->addr.a6[i] < (__force u32)b->addr.a6[i])
+ if (a->key[i] < b->key[i])
return -1;
return 1;
}