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Message-Id: <1440710193-4824-5-git-send-email-dsa@cumulusnetworks.com>
Date: Thu, 27 Aug 2015 14:16:32 -0700
From: David Ahern <dsa@...ulusnetworks.com>
To: netdev@...r.kernel.org
Cc: David Ahern <dsa@...ulusnetworks.com>
Subject: [PATCH net-next 4/5] 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@...ulusnetworks.com>
---
include/net/inetpeer.h | 30 ++++++++++++++----------------
1 file changed, 14 insertions(+), 16 deletions(-)
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 9d9b3446731d..e96bada9d19a 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 +122,12 @@ 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 = (a->family == AF_INET ? sizeof(a->a4) : sizeof(a->a6));
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;
}
--
1.9.1
--
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