x86/topology: Fix function name in documentation
[cris-mirror.git] / include / linux / sunrpc / rpc_rdma.h
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1 /*
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41 #ifndef _LINUX_SUNRPC_RPC_RDMA_H
42 #define _LINUX_SUNRPC_RPC_RDMA_H
44 #include <linux/types.h>
45 #include <linux/bitops.h>
47 #define RPCRDMA_VERSION 1
48 #define rpcrdma_version cpu_to_be32(RPCRDMA_VERSION)
50 enum {
51 RPCRDMA_V1_DEF_INLINE_SIZE = 1024,
55 * XDR sizes, in quads
57 enum {
58 rpcrdma_fixed_maxsz = 4,
59 rpcrdma_segment_maxsz = 4,
60 rpcrdma_readchunk_maxsz = 2 + rpcrdma_segment_maxsz,
64 * Smallest RPC/RDMA header: rm_xid through rm_type, then rm_nochunks
66 #define RPCRDMA_HDRLEN_MIN (sizeof(__be32) * 7)
67 #define RPCRDMA_HDRLEN_ERR (sizeof(__be32) * 5)
69 enum rpcrdma_errcode {
70 ERR_VERS = 1,
71 ERR_CHUNK = 2
74 enum rpcrdma_proc {
75 RDMA_MSG = 0, /* An RPC call or reply msg */
76 RDMA_NOMSG = 1, /* An RPC call or reply msg - separate body */
77 RDMA_MSGP = 2, /* An RPC call or reply msg with padding */
78 RDMA_DONE = 3, /* Client signals reply completion */
79 RDMA_ERROR = 4 /* An RPC RDMA encoding error */
82 #define rdma_msg cpu_to_be32(RDMA_MSG)
83 #define rdma_nomsg cpu_to_be32(RDMA_NOMSG)
84 #define rdma_msgp cpu_to_be32(RDMA_MSGP)
85 #define rdma_done cpu_to_be32(RDMA_DONE)
86 #define rdma_error cpu_to_be32(RDMA_ERROR)
88 #define err_vers cpu_to_be32(ERR_VERS)
89 #define err_chunk cpu_to_be32(ERR_CHUNK)
92 * Private extension to RPC-over-RDMA Version One.
93 * Message passed during RDMA-CM connection set-up.
95 * Add new fields at the end, and don't permute existing
96 * fields.
98 struct rpcrdma_connect_private {
99 __be32 cp_magic;
100 u8 cp_version;
101 u8 cp_flags;
102 u8 cp_send_size;
103 u8 cp_recv_size;
104 } __packed;
106 #define rpcrdma_cmp_magic __cpu_to_be32(0xf6ab0e18)
108 enum {
109 RPCRDMA_CMP_VERSION = 1,
110 RPCRDMA_CMP_F_SND_W_INV_OK = BIT(0),
113 static inline u8
114 rpcrdma_encode_buffer_size(unsigned int size)
116 return (size >> 10) - 1;
119 static inline unsigned int
120 rpcrdma_decode_buffer_size(u8 val)
122 return ((unsigned int)val + 1) << 10;
125 #endif /* _LINUX_SUNRPC_RPC_RDMA_H */