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Diffstat (limited to 'include/linux/rds.h')
| -rw-r--r-- | include/linux/rds.h | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/include/linux/rds.h b/include/linux/rds.h deleted file mode 100644 index 91950950aa5..00000000000 --- a/include/linux/rds.h +++ /dev/null @@ -1,285 +0,0 @@ -/* - * Copyright (c) 2008 Oracle. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _LINUX_RDS_H -#define _LINUX_RDS_H - -#include <linux/types.h> - -#define RDS_IB_ABI_VERSION 0x301 - -/* - * setsockopt/getsockopt for SOL_RDS - */ -#define RDS_CANCEL_SENT_TO 1 -#define RDS_GET_MR 2 -#define RDS_FREE_MR 3 -/* deprecated: RDS_BARRIER 4 */ -#define RDS_RECVERR 5 -#define RDS_CONG_MONITOR 6 -#define RDS_GET_MR_FOR_DEST 7 - -/* - * Control message types for SOL_RDS. - * - * CMSG_RDMA_ARGS (sendmsg) - * Request a RDMA transfer to/from the specified - * memory ranges. - * The cmsg_data is a struct rds_rdma_args. - * RDS_CMSG_RDMA_DEST (recvmsg, sendmsg) - * Kernel informs application about intended - * source/destination of a RDMA transfer - * RDS_CMSG_RDMA_MAP (sendmsg) - * Application asks kernel to map the given - * memory range into a IB MR, and send the - * R_Key along in an RDS extension header. - * The cmsg_data is a struct rds_get_mr_args, - * the same as for the GET_MR setsockopt. - * RDS_CMSG_RDMA_STATUS (recvmsg) - * Returns the status of a completed RDMA operation. - */ -#define RDS_CMSG_RDMA_ARGS 1 -#define RDS_CMSG_RDMA_DEST 2 -#define RDS_CMSG_RDMA_MAP 3 -#define RDS_CMSG_RDMA_STATUS 4 -#define RDS_CMSG_CONG_UPDATE 5 -#define RDS_CMSG_ATOMIC_FADD 6 -#define RDS_CMSG_ATOMIC_CSWP 7 -#define RDS_CMSG_MASKED_ATOMIC_FADD 8 -#define RDS_CMSG_MASKED_ATOMIC_CSWP 9 - -#define RDS_INFO_FIRST 10000 -#define RDS_INFO_COUNTERS 10000 -#define RDS_INFO_CONNECTIONS 10001 -/* 10002 aka RDS_INFO_FLOWS is deprecated */ -#define RDS_INFO_SEND_MESSAGES 10003 -#define RDS_INFO_RETRANS_MESSAGES 10004 -#define RDS_INFO_RECV_MESSAGES 10005 -#define RDS_INFO_SOCKETS 10006 -#define RDS_INFO_TCP_SOCKETS 10007 -#define RDS_INFO_IB_CONNECTIONS 10008 -#define RDS_INFO_CONNECTION_STATS 10009 -#define RDS_INFO_IWARP_CONNECTIONS 10010 -#define RDS_INFO_LAST 10010 - -struct rds_info_counter { - uint8_t name[32]; - uint64_t value; -} __attribute__((packed)); - -#define RDS_INFO_CONNECTION_FLAG_SENDING 0x01 -#define RDS_INFO_CONNECTION_FLAG_CONNECTING 0x02 -#define RDS_INFO_CONNECTION_FLAG_CONNECTED 0x04 - -#define TRANSNAMSIZ 16 - -struct rds_info_connection { - uint64_t next_tx_seq; - uint64_t next_rx_seq; - __be32 laddr; - __be32 faddr; - uint8_t transport[TRANSNAMSIZ]; /* null term ascii */ - uint8_t flags; -} __attribute__((packed)); - -#define RDS_INFO_MESSAGE_FLAG_ACK 0x01 -#define RDS_INFO_MESSAGE_FLAG_FAST_ACK 0x02 - -struct rds_info_message { - uint64_t seq; - uint32_t len; - __be32 laddr; - __be32 faddr; - __be16 lport; - __be16 fport; - uint8_t flags; -} __attribute__((packed)); - -struct rds_info_socket { - uint32_t sndbuf; - __be32 bound_addr; - __be32 connected_addr; - __be16 bound_port; - __be16 connected_port; - uint32_t rcvbuf; - uint64_t inum; -} __attribute__((packed)); - -struct rds_info_tcp_socket { - __be32 local_addr; - __be16 local_port; - __be32 peer_addr; - __be16 peer_port; - uint64_t hdr_rem; - uint64_t data_rem; - uint32_t last_sent_nxt; - uint32_t last_expected_una; - uint32_t last_seen_una; -} __attribute__((packed)); - -#define RDS_IB_GID_LEN 16 -struct rds_info_rdma_connection { - __be32 src_addr; - __be32 dst_addr; - uint8_t src_gid[RDS_IB_GID_LEN]; - uint8_t dst_gid[RDS_IB_GID_LEN]; - - uint32_t max_send_wr; - uint32_t max_recv_wr; - uint32_t max_send_sge; - uint32_t rdma_mr_max; - uint32_t rdma_mr_size; -}; - -/* - * Congestion monitoring. - * Congestion control in RDS happens at the host connection - * level by exchanging a bitmap marking congested ports. - * By default, a process sleeping in poll() is always woken - * up when the congestion map is updated. - * With explicit monitoring, an application can have more - * fine-grained control. - * The application installs a 64bit mask value in the socket, - * where each bit corresponds to a group of ports. - * When a congestion update arrives, RDS checks the set of - * ports that are now uncongested against the list bit mask - * installed in the socket, and if they overlap, we queue a - * cong_notification on the socket. - * - * To install the congestion monitor bitmask, use RDS_CONG_MONITOR - * with the 64bit mask. - * Congestion updates are received via RDS_CMSG_CONG_UPDATE - * control messages. - * - * The correspondence between bits and ports is - * 1 << (portnum % 64) - */ -#define RDS_CONG_MONITOR_SIZE 64 -#define RDS_CONG_MONITOR_BIT(port) (((unsigned int) port) % RDS_CONG_MONITOR_SIZE) -#define RDS_CONG_MONITOR_MASK(port) (1ULL << RDS_CONG_MONITOR_BIT(port)) - -/* - * RDMA related types - */ - -/* - * This encapsulates a remote memory location. - * In the current implementation, it contains the R_Key - * of the remote memory region, and the offset into it - * (so that the application does not have to worry about - * alignment). - */ -typedef uint64_t rds_rdma_cookie_t; - -struct rds_iovec { - uint64_t addr; - uint64_t bytes; -}; - -struct rds_get_mr_args { - struct rds_iovec vec; - uint64_t cookie_addr; - uint64_t flags; -}; - -struct rds_get_mr_for_dest_args { - struct sockaddr_storage dest_addr; - struct rds_iovec vec; - uint64_t cookie_addr; - uint64_t flags; -}; - -struct rds_free_mr_args { - rds_rdma_cookie_t cookie; - uint64_t flags; -}; - -struct rds_rdma_args { - rds_rdma_cookie_t cookie; - struct rds_iovec remote_vec; - uint64_t local_vec_addr; - uint64_t nr_local; - uint64_t flags; - uint64_t user_token; -}; - -struct rds_atomic_args { - rds_rdma_cookie_t cookie; - uint64_t local_addr; - uint64_t remote_addr; - union { - struct { - uint64_t compare; - uint64_t swap; - } cswp; - struct { - uint64_t add; - } fadd; - struct { - uint64_t compare; - uint64_t swap; - uint64_t compare_mask; - uint64_t swap_mask; - } m_cswp; - struct { - uint64_t add; - uint64_t nocarry_mask; - } m_fadd; - }; - uint64_t flags; - uint64_t user_token; -}; - -struct rds_rdma_notify { - uint64_t user_token; - int32_t status; -}; - -#define RDS_RDMA_SUCCESS 0 -#define RDS_RDMA_REMOTE_ERROR 1 -#define RDS_RDMA_CANCELED 2 -#define RDS_RDMA_DROPPED 3 -#define RDS_RDMA_OTHER_ERROR 4 - -/* - * Common set of flags for all RDMA related structs - */ -#define RDS_RDMA_READWRITE 0x0001 -#define RDS_RDMA_FENCE 0x0002 /* use FENCE for immediate send */ -#define RDS_RDMA_INVALIDATE 0x0004 /* invalidate R_Key after freeing MR */ -#define RDS_RDMA_USE_ONCE 0x0008 /* free MR after use */ -#define RDS_RDMA_DONTWAIT 0x0010 /* Don't wait in SET_BARRIER */ -#define RDS_RDMA_NOTIFY_ME 0x0020 /* Notify when operation completes */ -#define RDS_RDMA_SILENT 0x0040 /* Do not interrupt remote */ - -#endif /* IB_RDS_H */ |