diff options
Diffstat (limited to 'include/rdma/rdma_cm.h')
| -rw-r--r-- | include/rdma/rdma_cm.h | 120 |
1 files changed, 41 insertions, 79 deletions
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h index 71f48cfdc24c..cdc7cafab572 100644 --- a/include/rdma/rdma_cm.h +++ b/include/rdma/rdma_cm.h @@ -1,37 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* * Copyright (c) 2005 Voltaire Inc. All rights reserved. * Copyright (c) 2005 Intel Corporation. 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. */ -#if !defined(RDMA_CM_H) +#ifndef RDMA_CM_H #define RDMA_CM_H #include <linux/socket.h> @@ -76,10 +49,21 @@ struct rdma_addr { struct rdma_dev_addr dev_addr; }; +#define RDMA_PRIMARY_PATH_MAX_REC_NUM 3 struct rdma_route { struct rdma_addr addr; struct sa_path_rec *path_rec; - int num_paths; + + /* Optional path records of primary path */ + struct sa_path_rec *path_rec_inbound; + struct sa_path_rec *path_rec_outbound; + + /* + * 0 - No primary nor alternate path is available + * 1 - Only primary path is available + * 2 - Both primary and alternate path are available + */ + int num_pri_alt_paths; }; struct rdma_conn_param { @@ -111,6 +95,7 @@ struct rdma_cm_event { struct rdma_conn_param conn; struct rdma_ud_param ud; } param; + struct rdma_ucm_ece ece; }; struct rdma_cm_id; @@ -133,14 +118,18 @@ struct rdma_cm_id { struct rdma_route route; enum rdma_ucm_port_space ps; enum ib_qp_type qp_type; - u8 port_num; + u32 port_num; + struct work_struct net_work; }; -struct rdma_cm_id *__rdma_create_id(struct net *net, - rdma_cm_event_handler event_handler, - void *context, enum rdma_ucm_port_space ps, - enum ib_qp_type qp_type, - const char *caller); +struct rdma_cm_id * +__rdma_create_kernel_id(struct net *net, rdma_cm_event_handler event_handler, + void *context, enum rdma_ucm_port_space ps, + enum ib_qp_type qp_type, const char *caller); +struct rdma_cm_id *rdma_create_user_id(rdma_cm_event_handler event_handler, + void *context, + enum rdma_ucm_port_space ps, + enum ib_qp_type qp_type); /** * rdma_create_id - Create an RDMA identifier. @@ -158,9 +147,9 @@ struct rdma_cm_id *__rdma_create_id(struct net *net, * The event handler callback serializes on the id's mutex and is * allowed to sleep. */ -#define rdma_create_id(net, event_handler, context, ps, qp_type) \ - __rdma_create_id((net), (event_handler), (context), (ps), (qp_type), \ - KBUILD_MODNAME) +#define rdma_create_id(net, event_handler, context, ps, qp_type) \ + __rdma_create_kernel_id(net, event_handler, context, ps, qp_type, \ + KBUILD_MODNAME) /** * rdma_destroy_id - Destroys an RDMA identifier. @@ -250,19 +239,12 @@ 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); -/** - * 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); +int rdma_connect_locked(struct rdma_cm_id *id, + struct rdma_conn_param *conn_param); + +int rdma_connect_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param, + struct rdma_ucm_ece *ece); /** * rdma_listen - This function is called by the passive side to @@ -273,26 +255,12 @@ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param); */ int rdma_listen(struct rdma_cm_id *id, int backlog); -int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param, - const char *caller); +int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param); -/** - * rdma_accept - Called to accept a connection request or response. - * @id: Connection identifier associated with the request. - * @conn_param: Information needed to establish the connection. This must be - * provided if accepting a connection request. If accepting a connection - * response, this parameter must be NULL. - * - * Typically, this routine is only called by the listener to accept a connection - * request. It must also be called on the active side of a connection if the - * user is performing their own QP transitions. - * - * In the case of error, a reject message is sent to the remote side and the - * state of the qp associated with the id is modified to error, such that any - * previously posted receive buffers would be flushed. - */ -#define rdma_accept(id, conn_param) \ - __rdma_accept((id), (conn_param), KBUILD_MODNAME) +void rdma_lock_handler(struct rdma_cm_id *id); +void rdma_unlock_handler(struct rdma_cm_id *id); +int rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param, + struct rdma_ucm_ece *ece); /** * rdma_notify - Notifies the RDMA CM of an asynchronous event that has @@ -313,7 +281,7 @@ 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, - u8 private_data_len); + u8 private_data_len, u8 reason); /** * rdma_disconnect - This function disconnects the associated QP and @@ -375,6 +343,8 @@ int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse); int rdma_set_afonly(struct rdma_cm_id *id, int afonly); int rdma_set_ack_timeout(struct rdma_cm_id *id, u8 timeout); + +int rdma_set_min_rnr_timer(struct rdma_cm_id *id, u8 min_rnr_timer); /** * rdma_get_service_id - Return the IB service ID for a specified address. * @id: Communication identifier associated with the address. @@ -390,14 +360,6 @@ __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr); const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id, int reason); /** - * rdma_is_consumer_reject - return true if the consumer rejected the connect - * request. - * @id: Communication identifier that received the REJECT event. - * @reason: Value returned in the REJECT event status field. - */ -bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason); - -/** * rdma_consumer_reject_data - return the consumer reject private data and * length, if any. * @id: Communication identifier that received the REJECT event. |