diff options
Diffstat (limited to 'include/rdma/rdma_cm.h')
| -rw-r--r-- | include/rdma/rdma_cm.h | 209 |
1 files changed, 162 insertions, 47 deletions
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h index deb5a0a4cee..1ed2088dc9f 100644 --- a/include/rdma/rdma_cm.h +++ b/include/rdma/rdma_cm.h @@ -2,29 +2,33 @@ * Copyright (c) 2005 Voltaire Inc. All rights reserved. * Copyright (c) 2005 Intel Corporation. All rights reserved. * - * This Software is licensed under one of the following licenses: + * 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: * - * 1) under the terms of the "Common Public License 1.0" a copy of which is - * available from the Open Source Initiative, see - * http://www.opensource.org/licenses/cpl.php. + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: * - * 2) under the terms of the "The BSD License" a copy of which is - * available from the Open Source Initiative, see - * http://www.opensource.org/licenses/bsd-license.php. + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. * - * 3) under the terms of the "GNU General Public License (GPL) Version 2" a - * copy of which is available from the Open Source Initiative, see - * http://www.opensource.org/licenses/gpl-license.php. - * - * Licensee has the right to choose one of the above licenses. - * - * Redistributions of source code must retain the above copyright - * notice and one of the license notices. - * - * Redistributions in binary form must reproduce both the above copyright - * notice, one of the license notices in the documentation - * and/or other materials provided with the distribution. + * - 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. */ #if !defined(RDMA_CM_H) @@ -52,22 +56,28 @@ enum rdma_cm_event_type { RDMA_CM_EVENT_ESTABLISHED, RDMA_CM_EVENT_DISCONNECTED, RDMA_CM_EVENT_DEVICE_REMOVAL, + RDMA_CM_EVENT_MULTICAST_JOIN, + RDMA_CM_EVENT_MULTICAST_ERROR, + RDMA_CM_EVENT_ADDR_CHANGE, + RDMA_CM_EVENT_TIMEWAIT_EXIT }; enum rdma_port_space { - RDMA_PS_SDP = 0x0001, - RDMA_PS_TCP = 0x0106, - RDMA_PS_UDP = 0x0111, - RDMA_PS_SCTP = 0x0183 + RDMA_PS_SDP = 0x0001, + RDMA_PS_IPOIB = 0x0002, + RDMA_PS_IB = 0x013F, + RDMA_PS_TCP = 0x0106, + RDMA_PS_UDP = 0x0111, }; +#define RDMA_IB_IP_PS_MASK 0xFFFFFFFFFFFF0000ULL +#define RDMA_IB_IP_PS_TCP 0x0000000001060000ULL +#define RDMA_IB_IP_PS_UDP 0x0000000001110000ULL +#define RDMA_IB_IP_PS_IB 0x00000000013F0000ULL + struct rdma_addr { - struct sockaddr src_addr; - u8 src_pad[sizeof(struct sockaddr_in6) - - sizeof(struct sockaddr)]; - struct sockaddr dst_addr; - u8 dst_pad[sizeof(struct sockaddr_in6) - - sizeof(struct sockaddr)]; + struct sockaddr_storage src_addr; + struct sockaddr_storage dst_addr; struct rdma_dev_addr dev_addr; }; @@ -77,11 +87,49 @@ struct rdma_route { int num_paths; }; +struct rdma_conn_param { + const void *private_data; + u8 private_data_len; + u8 responder_resources; + u8 initiator_depth; + u8 flow_control; + u8 retry_count; /* ignored when accepting */ + u8 rnr_retry_count; + /* Fields below ignored if a QP is created on the rdma_cm_id. */ + u8 srq; + u32 qp_num; + u32 qkey; +}; + +struct rdma_ud_param { + const void *private_data; + u8 private_data_len; + struct ib_ah_attr ah_attr; + u32 qp_num; + u32 qkey; +}; + struct rdma_cm_event { enum rdma_cm_event_type event; int status; - void *private_data; - u8 private_data_len; + union { + struct rdma_conn_param conn; + struct rdma_ud_param ud; + } param; +}; + +enum rdma_cm_state { + RDMA_CM_IDLE, + RDMA_CM_ADDR_QUERY, + RDMA_CM_ADDR_RESOLVED, + RDMA_CM_ROUTE_QUERY, + RDMA_CM_ROUTE_RESOLVED, + RDMA_CM_CONNECT, + RDMA_CM_DISCONNECT, + RDMA_CM_ADDR_BOUND, + RDMA_CM_LISTEN, + RDMA_CM_DEVICE_REMOVAL, + RDMA_CM_DESTROYING }; struct rdma_cm_id; @@ -103,6 +151,7 @@ struct rdma_cm_id { rdma_cm_event_handler event_handler; struct rdma_route route; enum rdma_port_space ps; + enum ib_qp_type qp_type; u8 port_num; }; @@ -113,9 +162,11 @@ struct rdma_cm_id { * returned rdma_id. * @context: User specified context associated with the id. * @ps: RDMA port space. + * @qp_type: type of queue pair associated with the id. */ struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, - void *context, enum rdma_port_space ps); + void *context, enum rdma_port_space ps, + enum ib_qp_type qp_type); /** * rdma_destroy_id - Destroys an RDMA identifier. @@ -204,25 +255,17 @@ void rdma_destroy_qp(struct rdma_cm_id *id); int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, int *qp_attr_mask); -struct rdma_conn_param { - const void *private_data; - u8 private_data_len; - u8 responder_resources; - u8 initiator_depth; - u8 flow_control; - u8 retry_count; /* ignored when accepting */ - u8 rnr_retry_count; - /* Fields below ignored if a QP is created on the rdma_cm_id. */ - u8 srq; - u32 qp_num; - enum ib_qp_type qp_type; -}; - /** * rdma_connect - Initiate an active connection request. + * @id: Connection identifier to connect. + * @conn_param: Connection information used for connected QPs. * * Users must have resolved a route for the rdma_cm_id to connect with * by having called rdma_resolve_route before calling this routine. + * + * This call will either connect to a remote QP or obtain remote QP + * information for unconnected rdma_cm_id's. The actual operation is + * based on the rdma_cm_id's port space. */ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param); @@ -253,6 +296,21 @@ int rdma_listen(struct rdma_cm_id *id, int backlog); int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param); /** + * rdma_notify - Notifies the RDMA CM of an asynchronous event that has + * occurred on the connection. + * @id: Connection identifier to transition to established. + * @event: Asynchronous event. + * + * This routine should be invoked by users to notify the CM of relevant + * communication events. Events that should be reported to the CM and + * when to report them are: + * + * IB_EVENT_COMM_EST - Used when a message is received on a connected + * QP before an RTU has been received. + */ +int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event); + +/** * rdma_reject - Called to reject a connection request or response. */ int rdma_reject(struct rdma_cm_id *id, const void *private_data, @@ -264,5 +322,62 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data, */ int rdma_disconnect(struct rdma_cm_id *id); -#endif /* RDMA_CM_H */ +/** + * rdma_join_multicast - Join the multicast group specified by the given + * address. + * @id: Communication identifier associated with the request. + * @addr: Multicast address identifying the group to join. + * @context: User-defined context associated with the join request, returned + * to the user through the private_data pointer in multicast events. + */ +int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, + void *context); + +/** + * rdma_leave_multicast - Leave the multicast group specified by the given + * address. + */ +void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr); + +/** + * rdma_set_service_type - Set the type of service associated with a + * connection identifier. + * @id: Communication identifier to associated with service type. + * @tos: Type of service. + * + * The type of service is interpretted as a differentiated service + * field (RFC 2474). The service type should be specified before + * performing route resolution, as existing communication on the + * connection identifier may be unaffected. The type of service + * requested may not be supported by the network to all destinations. + */ +void rdma_set_service_type(struct rdma_cm_id *id, int tos); + +/** + * rdma_set_reuseaddr - Allow the reuse of local addresses when binding + * the rdma_cm_id. + * @id: Communication identifier to configure. + * @reuse: Value indicating if the bound address is reusable. + * + * Reuse must be set before an address is bound to the id. + */ +int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse); + +/** + * rdma_set_afonly - Specify that listens are restricted to the + * bound address family only. + * @id: Communication identifer to configure. + * @afonly: Value indicating if listens are restricted. + * + * Must be set before identifier is in the listening state. + */ +int rdma_set_afonly(struct rdma_cm_id *id, int afonly); + + /** + * rdma_get_service_id - Return the IB service ID for a specified address. + * @id: Communication identifier associated with the address. + * @addr: Address for the service ID. + */ +__be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr); +#endif /* RDMA_CM_H */ |