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-rw-r--r--fs/nfsd/cache.h17
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h
index 93cc9d34c459..87fd1410b737 100644
--- a/fs/nfsd/cache.h
+++ b/fs/nfsd/cache.h
@@ -12,6 +12,10 @@
/*
* Representation of a reply cache entry.
+ *
+ * Note that we use a sockaddr_in6 to hold the address instead of the more
+ * typical sockaddr_storage. This is for space reasons, since sockaddr_storage
+ * is much larger than a sockaddr_in6.
*/
struct svc_cacherep {
struct hlist_node c_hash;
@@ -20,11 +24,13 @@ struct svc_cacherep {
unsigned char c_state, /* unused, inprog, done */
c_type, /* status, buffer */
c_secure : 1; /* req came from port < 1024 */
- struct sockaddr_in c_addr;
+ struct sockaddr_in6 c_addr;
__be32 c_xid;
u32 c_prot;
u32 c_proc;
u32 c_vers;
+ unsigned int c_len;
+ __wsum c_csum;
unsigned long c_timestamp;
union {
struct kvec u_vec;
@@ -46,8 +52,7 @@ enum {
enum {
RC_DROPIT,
RC_REPLY,
- RC_DOIT,
- RC_INTR
+ RC_DOIT
};
/*
@@ -67,6 +72,12 @@ enum {
*/
#define RC_DELAY (HZ/5)
+/* Cache entries expire after this time period */
+#define RC_EXPIRE (120 * HZ)
+
+/* Checksum this amount of the request */
+#define RC_CSUMLEN (256U)
+
int nfsd_reply_cache_init(void);
void nfsd_reply_cache_shutdown(void);
int nfsd_cache_lookup(struct svc_rqst *);