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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-07-18 00:11:30 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-07-18 00:11:30 +0200 |
| commit | d9ba131d8f58c0d2ff5029e7002ab43f913b36f9 (patch) | |
| tree | f2ed7330c72077bf84954b989cbe1ff47522a115 /include | |
| parent | SUNRPC: Clean up the slot table allocation (diff) | |
| download | linux-d9ba131d8f58c0d2ff5029e7002ab43f913b36f9.tar.xz linux-d9ba131d8f58c0d2ff5029e7002ab43f913b36f9.zip | |
SUNRPC: Support dynamic slot allocation for TCP connections
Allow the number of available slots to grow with the TCP window size.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sunrpc/xprt.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 05047250f218..d02762d1de27 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -22,6 +22,7 @@ #define RPC_MIN_SLOT_TABLE (2U) #define RPC_DEF_SLOT_TABLE (16U) #define RPC_MAX_SLOT_TABLE (128U) +#define RPC_MAX_SLOT_TABLE_LIMIT (65536U) /* * This describes a timeout strategy @@ -168,7 +169,9 @@ struct rpc_xprt { struct rpc_wait_queue pending; /* requests in flight */ struct rpc_wait_queue backlog; /* waiting for slot */ struct list_head free; /* free slots */ - unsigned int max_reqs; /* total slots */ + unsigned int max_reqs; /* max number of slots */ + unsigned int min_reqs; /* min number of slots */ + atomic_t num_reqs; /* total slots */ unsigned long state; /* transport state */ unsigned char shutdown : 1, /* being shut down */ resvport : 1; /* use a reserved port */ @@ -281,7 +284,9 @@ void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); void xprt_release(struct rpc_task *task); struct rpc_xprt * xprt_get(struct rpc_xprt *xprt); void xprt_put(struct rpc_xprt *xprt); -struct rpc_xprt * xprt_alloc(struct net *net, int size, int max_req); +struct rpc_xprt * xprt_alloc(struct net *net, size_t size, + unsigned int num_prealloc, + unsigned int max_req); void xprt_free(struct rpc_xprt *); static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p) |