From: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: anna.schumaker-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v3 15/22] rpcrdma: RDMA/CM private message data structure
Date: Thu, 15 Sep 2016 10:56:59 -0400 [thread overview]
Message-ID: <20160915145659.11080.54491.stgit@manet.1015granger.net> (raw)
In-Reply-To: <20160915143440.11080.89241.stgit-FYjufvaPoItvLzlybtyyYzGyq/o6K9yX@public.gmane.org>
Introduce data structure used by both client and server to exchange
implementation details during RDMA/CM connection establishment.
This is an experimental out-of-band exchange between Linux
RPC-over-RDMA Version One implementations, replacing the deprecated
CCP (see RFC 5666bis). The purpose of this extension is to enable
prototyping of features that might be introduced in a subsequent
version of RPC-over-RDMA.
Suggested by Christoph Hellwig and Devesh Sharma.
Signed-off-by: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
---
include/linux/sunrpc/rpc_rdma.h | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/include/linux/sunrpc/rpc_rdma.h b/include/linux/sunrpc/rpc_rdma.h
index 3b1ff38..a7da6bf 100644
--- a/include/linux/sunrpc/rpc_rdma.h
+++ b/include/linux/sunrpc/rpc_rdma.h
@@ -41,6 +41,7 @@
#define _LINUX_SUNRPC_RPC_RDMA_H
#include <linux/types.h>
+#include <linux/bitops.h>
#define RPCRDMA_VERSION 1
#define rpcrdma_version cpu_to_be32(RPCRDMA_VERSION)
@@ -129,4 +130,38 @@ enum rpcrdma_proc {
#define rdma_done cpu_to_be32(RDMA_DONE)
#define rdma_error cpu_to_be32(RDMA_ERROR)
+/*
+ * Private extension to RPC-over-RDMA Version One.
+ * Message passed during RDMA-CM connection set-up.
+ *
+ * Add new fields at the end, and don't permute existing
+ * fields.
+ */
+struct rpcrdma_connect_private {
+ __be32 cp_magic;
+ u8 cp_version;
+ u8 cp_flags;
+ u8 cp_send_size;
+ u8 cp_recv_size;
+} __packed;
+
+#define rpcrdma_cmp_magic __cpu_to_be32(0xf6ab0e18)
+
+enum {
+ RPCRDMA_CMP_VERSION = 1,
+ RPCRDMA_CMP_F_SND_W_INV_OK = BIT(0),
+};
+
+static inline u8
+rpcrdma_encode_buffer_size(unsigned int size)
+{
+ return (size >> 10) - 1;
+}
+
+static inline unsigned int
+rpcrdma_decode_buffer_size(u8 val)
+{
+ return ((unsigned int)val + 1) << 10;
+}
+
#endif /* _LINUX_SUNRPC_RPC_RDMA_H */
--
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WARNING: multiple messages have this Message-ID (diff)
From: Chuck Lever <chuck.lever@oracle.com>
To: anna.schumaker@netapp.com
Cc: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org
Subject: [PATCH v3 15/22] rpcrdma: RDMA/CM private message data structure
Date: Thu, 15 Sep 2016 10:56:59 -0400 [thread overview]
Message-ID: <20160915145659.11080.54491.stgit@manet.1015granger.net> (raw)
In-Reply-To: <20160915143440.11080.89241.stgit@manet.1015granger.net>
Introduce data structure used by both client and server to exchange
implementation details during RDMA/CM connection establishment.
This is an experimental out-of-band exchange between Linux
RPC-over-RDMA Version One implementations, replacing the deprecated
CCP (see RFC 5666bis). The purpose of this extension is to enable
prototyping of features that might be introduced in a subsequent
version of RPC-over-RDMA.
Suggested by Christoph Hellwig and Devesh Sharma.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
---
include/linux/sunrpc/rpc_rdma.h | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/include/linux/sunrpc/rpc_rdma.h b/include/linux/sunrpc/rpc_rdma.h
index 3b1ff38..a7da6bf 100644
--- a/include/linux/sunrpc/rpc_rdma.h
+++ b/include/linux/sunrpc/rpc_rdma.h
@@ -41,6 +41,7 @@
#define _LINUX_SUNRPC_RPC_RDMA_H
#include <linux/types.h>
+#include <linux/bitops.h>
#define RPCRDMA_VERSION 1
#define rpcrdma_version cpu_to_be32(RPCRDMA_VERSION)
@@ -129,4 +130,38 @@ enum rpcrdma_proc {
#define rdma_done cpu_to_be32(RDMA_DONE)
#define rdma_error cpu_to_be32(RDMA_ERROR)
+/*
+ * Private extension to RPC-over-RDMA Version One.
+ * Message passed during RDMA-CM connection set-up.
+ *
+ * Add new fields at the end, and don't permute existing
+ * fields.
+ */
+struct rpcrdma_connect_private {
+ __be32 cp_magic;
+ u8 cp_version;
+ u8 cp_flags;
+ u8 cp_send_size;
+ u8 cp_recv_size;
+} __packed;
+
+#define rpcrdma_cmp_magic __cpu_to_be32(0xf6ab0e18)
+
+enum {
+ RPCRDMA_CMP_VERSION = 1,
+ RPCRDMA_CMP_F_SND_W_INV_OK = BIT(0),
+};
+
+static inline u8
+rpcrdma_encode_buffer_size(unsigned int size)
+{
+ return (size >> 10) - 1;
+}
+
+static inline unsigned int
+rpcrdma_decode_buffer_size(u8 val)
+{
+ return ((unsigned int)val + 1) << 10;
+}
+
#endif /* _LINUX_SUNRPC_RPC_RDMA_H */
next prev parent reply other threads:[~2016-09-15 14:56 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 14:54 [PATCH v3 00/22] client-side NFS/RDMA patches ready for v4.9 Chuck Lever
2016-09-15 14:54 ` Chuck Lever
[not found] ` <20160915143440.11080.89241.stgit-FYjufvaPoItvLzlybtyyYzGyq/o6K9yX@public.gmane.org>
2016-09-15 14:55 ` [PATCH v3 01/22] xprtrdma: Eliminate INLINE_THRESHOLD macros Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:55 ` [PATCH v3 02/22] SUNRPC: Refactor rpc_xdr_buf_init() Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:55 ` [PATCH v3 03/22] SUNRPC: Generalize the RPC buffer allocation API Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:55 ` [PATCH v3 04/22] SUNRPC: Generalize the RPC buffer release API Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:55 ` [PATCH v3 05/22] SUNRPC: Separate buffer pointers for RPC Call and Reply messages Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:55 ` [PATCH v3 06/22] SUNRPC: Add a transport-specific private field in rpc_rqst Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:55 ` [PATCH v3 07/22] xprtrdma: Initialize separate RPC call and reply buffers Chuck Lever
2016-09-15 14:55 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 08/22] xprtrdma: Use smaller buffers for RPC-over-RDMA headers Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 09/22] xprtrdma: Replace DMA_BIDIRECTIONAL Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 10/22] xprtrdma: Delay DMA mapping Send and Receive buffers Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 11/22] xprtrdma: Eliminate "ia" argument in rpcrdma_{alloc, free}_regbuf Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 12/22] xprtrdma: Simplify rpcrdma_ep_post_recv() Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 13/22] xprtrdma: Move send_wr to struct rpcrdma_req Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` [PATCH v3 14/22] xprtrdma: Move recv_wr to struct rpcrdma_rep Chuck Lever
2016-09-15 14:56 ` Chuck Lever
2016-09-15 14:56 ` Chuck Lever [this message]
2016-09-15 14:56 ` [PATCH v3 15/22] rpcrdma: RDMA/CM private message data structure Chuck Lever
2016-09-15 14:57 ` [PATCH v3 16/22] xprtrdma: Client-side support for rpcrdma_connect_private Chuck Lever
2016-09-15 14:57 ` Chuck Lever
2016-09-15 14:57 ` [PATCH v3 17/22] xprtrdma: Basic support for Remote Invalidation Chuck Lever
2016-09-15 14:57 ` Chuck Lever
2016-09-15 14:57 ` [PATCH v3 18/22] xprtrdma: Use gathered Send for large inline messages Chuck Lever
2016-09-15 14:57 ` Chuck Lever
2016-09-15 14:57 ` [PATCH v3 19/22] xprtrdma: Support larger inline thresholds Chuck Lever
2016-09-15 14:57 ` Chuck Lever
2016-09-15 14:57 ` [PATCH v3 20/22] xprtrmda: Report address of frmr, not mw Chuck Lever
2016-09-15 14:57 ` Chuck Lever
2016-09-15 14:57 ` [PATCH v3 21/22] xprtrdma: Rename rpcrdma_receive_wc() Chuck Lever
2016-09-15 14:57 ` Chuck Lever
2016-09-15 14:57 ` [PATCH v3 22/22] xprtrdma: Eliminate rpcrdma_receive_worker() Chuck Lever
2016-09-15 14:57 ` Chuck Lever
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