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net: Add support for VRFs to inetpeer cache

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inetpeer caches based on address only, so duplicate IP addresses within
a namespace return the same cached entry. Enhance the ipv4 address key
to contain both the IPv4 address and VRF device index.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2015-08-27 16:07:03 -07:00 • committed by David S. Miller
parent 5345c2e12d
commit 192132b9a0
4 changed files with 21 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

17
include/net/inetpeer.h
View file

@ -15,11 +15,17 @@
#include <net/ipv6.h>
#include <linux/atomic.h>
/* IPv4 address key for cache lookups */
struct ipv4_addr_key {
__be32 addr;
int vif;
};
#define INETPEER_MAXKEYSZ (sizeof(struct in6_addr) / sizeof(u32))
struct inetpeer_addr {
union {
__be32 a4;
struct ipv4_addr_key a4;
struct in6_addr a6;
u32 key[INETPEER_MAXKEYSZ];
};
@ -71,13 +77,13 @@ void inet_initpeers(void) __init;
static inline void inetpeer_set_addr_v4(struct inetpeer_addr *iaddr, __be32 ip)
{
iaddr->a4 = ip;
iaddr->a4.addr = ip;
iaddr->family = AF_INET;
}
static inline __be32 inetpeer_get_addr_v4(struct inetpeer_addr *iaddr)
{
return iaddr->a4;
return iaddr->a4.addr;
}
static inline void inetpeer_set_addr_v6(struct inetpeer_addr *iaddr,
@ -99,11 +105,12 @@ struct inet_peer *inet_getpeer(struct inet_peer_base *base,
static inline struct inet_peer *inet_getpeer_v4(struct inet_peer_base *base,
__be32 v4daddr,
int create)
int vif, int create)
{
struct inetpeer_addr daddr;
daddr.a4 = v4daddr;
daddr.a4.addr = v4daddr;
daddr.a4.vif = vif;
daddr.family = AF_INET;
return inet_getpeer(base, &daddr, create);
}