diff options
| author | dpward <david.ward@ll.mit.edu> | 2011-09-05 16:47:24 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-11 09:37:17 -0800 |
| commit | 3fa57c1bf5fb311544199b7837a08b9f5bf5e6e4 (patch) | |
| tree | 9285297f1b3fee391dca9773416e900d0b49b7a8 /include/net/flow.h | |
| parent | 867ca3109d0289d0a62bb3c7fc3d365e9d478fae (diff) | |
net: Handle different key sizes between address families in flow cache
commit aa1c366e4febc7f5c2b84958a2dd7cd70e28f9d0 upstream.
With the conversion of struct flowi to a union of AF-specific structs, some
operations on the flow cache need to account for the exact size of the key.
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/net/flow.h')
| -rw-r--r-- | include/net/flow.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/net/flow.h b/include/net/flow.h index a33385366edb..32359fdc7e73 100644 --- a/include/net/flow.h +++ b/include/net/flow.h @@ -7,6 +7,7 @@ #ifndef _NET_FLOW_H #define _NET_FLOW_H +#include <linux/socket.h> #include <linux/in6.h> #include <asm/atomic.h> @@ -161,6 +162,24 @@ static inline struct flowi *flowidn_to_flowi(struct flowidn *fldn) return container_of(fldn, struct flowi, u.dn); } +typedef unsigned long flow_compare_t; + +static inline size_t flow_key_size(u16 family) +{ + switch (family) { + case AF_INET: + BUILD_BUG_ON(sizeof(struct flowi4) % sizeof(flow_compare_t)); + return sizeof(struct flowi4) / sizeof(flow_compare_t); + case AF_INET6: + BUILD_BUG_ON(sizeof(struct flowi6) % sizeof(flow_compare_t)); + return sizeof(struct flowi6) / sizeof(flow_compare_t); + case AF_DECnet: + BUILD_BUG_ON(sizeof(struct flowidn) % sizeof(flow_compare_t)); + return sizeof(struct flowidn) / sizeof(flow_compare_t); + } + return 0; +} + #define FLOW_DIR_IN 0 #define FLOW_DIR_OUT 1 #define FLOW_DIR_FWD 2 |