/* * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2004 Infinicon Corporation. All rights reserved. * Copyright (c) 2004 Intel Corporation. All rights reserved. * Copyright (c) 2004 Topspin Corporation. All rights reserved. * Copyright (c) 2004-2006 Voltaire 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(IB_MAD_H) #define IB_MAD_H #include #include /* Management base version */ #define IB_MGMT_BASE_VERSION 1 /* Management classes */ #define IB_MGMT_CLASS_SUBN_LID_ROUTED 0x01 #define IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 0x81 #define IB_MGMT_CLASS_SUBN_ADM 0x03 #define IB_MGMT_CLASS_PERF_MGMT 0x04 #define IB_MGMT_CLASS_BM 0x05 #define IB_MGMT_CLASS_DEVICE_MGMT 0x06 #define IB_MGMT_CLASS_CM 0x07 #define IB_MGMT_CLASS_SNMP 0x08 #define IB_MGMT_CLASS_DEVICE_ADM 0x10 #define IB_MGMT_CLASS_BOOT_MGMT 0x11 #define IB_MGMT_CLASS_BIS 0x12 #define IB_MGMT_CLASS_CONG_MGMT 0x21 #define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30 #define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F #define IB_OPENIB_OUI (0x001405) /* Management methods */ #define IB_MGMT_METHOD_GET 0x01 #define IB_MGMT_METHOD_SET 0x02 #define IB_MGMT_METHOD_GET_RESP 0x81 #define IB_MGMT_METHOD_SEND 0x03 #define IB_MGMT_METHOD_TRAP 0x05 #define IB_MGMT_METHOD_REPORT 0x06 #define IB_MGMT_METHOD_REPORT_RESP 0x86 #define IB_MGMT_METHOD_TRAP_REPRESS 0x07 #define IB_MGMT_METHOD_RESP 0x80 #define IB_BM_ATTR_MOD_RESP cpu_to_be32(1) #define IB_MGMT_MAX_METHODS 128 /* RMPP information */ #define IB_MGMT_RMPP_VERSION 1 #define IB_MGMT_RMPP_TYPE_DATA 1 #define IB_MGMT_RMPP_TYPE_ACK 2 #define IB_MGMT_RMPP_TYPE_STOP 3 #define IB_MGMT_RMPP_TYPE_ABORT 4 #define IB_MGMT_RMPP_FLAG_ACTIVE 1 #define IB_MGMT_RMPP_FLAG_FIRST (1<<1) #define IB_MGMT_RMPP_FLAG_LAST (1<<2) #define IB_MGMT_RMPP_NO_RESPTIME 0x1F #define IB_MGMT_RMPP_STATUS_SUCCESS 0 #define IB_MGMT_RMPP_STATUS_RESX 1 #define IB_MGMT_RMPP_STATUS_ABORT_MIN 118 #define IB_MGMT_RMPP_STATUS_T2L 118 #define IB_MGMT_RMPP_STATUS_BAD_LEN 119 #define IB_MGMT_RMPP_STATUS_BAD_SEG 120 #define IB_MGMT_RMPP_STATUS_BADT 121 #define IB_MGMT_RMPP_STATUS_W2S 122 #define IB_MGMT_RMPP_STATUS_S2B 123 #define IB_MGMT_RMPP_STATUS_BAD_STATUS 124 #define IB_MGMT_RMPP_STATUS_UNV 125 #define IB_MGMT_RMPP_STATUS_TMR 126 #define IB_MGMT_RMPP_STATUS_UNSPEC 127 #define IB_MGMT_RMPP_STATUS_ABORT_MAX 127 #define IB_QP0 0 #define IB_QP1 __constant_htonl(1) #define IB_QP1_QKEY 0x80010000 #define IB_QP_SET_QKEY 0x80000000 #define IB_DEFAULT_PKEY_PARTIAL 0x7FFF #define IB_DEFAULT_PKEY_FULL 0xFFFF enum { IB_MGMT_MAD_HDR = 24, IB_MGMT_MAD_DATA = 232, IB_MGMT_RMPP_HDR = 36, IB_MGMT_RMPP_DATA = 220, IB_MGMT_VENDOR_HDR = 40, IB_MGMT_VENDOR_DATA = 216, IB_MGMT_SA_HDR = 56, IB_MGMT_SA_DATA = 200, IB_MGMT_DEVICE_HDR = 64, IB_MGMT_DEVICE_DATA = 192, }; struct ib_mad_hdr { u8 base_version; u8 mgmt_class; u8 class_version; u8 method; __be16 status; __be16 class_specific; __be64 tid; __be16 attr_id; __be16 resv; __be32 attr_mod; }; struct ib_rmpp_hdr { u8 rmpp_version; u8 rmpp_type; u8 rmpp_rtime_flags; u8 rmpp_status; __be32 seg_num; __be32 paylen_newwin; }; typedef u64 __bitwise ib_sa_comp_mask; #define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n)) /* * ib_sa_hdr and ib_sa_mad structures must be packed because they have * 64-bit fields that are only 32-bit aligned. 64-bit architectures will * lay them out wrong otherwise. (And unfortunately they are sent on * the wire so we can't change the layout) */ struct ib_sa_hdr { __be64 sm_key; __be16 attr_offset; __be16 reserved; ib_sa_comp_mask comp_mask; } __attribute__ ((packed)); struct ib_mad { struct ib_mad_hdr mad_hdr; u8 data[IB_MGMT_MAD_DATA]; }; struct ib_rmpp_mad { struct ib_mad_hdr mad_hdr; struct ib_rmpp_hdr rmpp_hdr; u8 data[IB_MGMT_RMPP_DATA]; }; struct ib_sa_mad { struct ib_mad_hdr mad_hdr; struct ib_rmpp_hdr rmpp_hdr; struct ib_sa_hdr sa_hdr; u8 data[IB_MGMT_SA_DATA]; } __attribute__ ((packed)); struct ib_vendor_mad { struct ib_mad_hdr mad_hdr; struct ib_rmpp_hdr rmpp_hdr; u8 reserved; u8 oui[3]; u8 data[IB_MGMT_VENDOR_DATA]; }; struct ib_class_port_info { u8 base_version; u8 class_version; __be16 capability_mask; u8 reserved[3]; u8 resp_time_value; u8 redirect_gid[16]; __be32 redirect_tcslfl; __be16 redirect_lid; __be16 redirect_pkey; __be32 redirect_qp; __be32 redirect_qkey; u8 trap_gid[16]; __be32 trap_tcslfl; __be16 trap_lid; __be16 trap_pkey; __be32 trap_hlqp; __be32 trap_qkey; }; /** * ib_mad_send_buf - MAD data buffer and work request for sends. * @next: A pointer used to chain together MADs for posting. * @mad: References an allocated MAD data buffer for MADs that do not have * RMPP active. For MADs using RMPP, references the common and management * class specific headers. * @mad_agent: MAD agent that allocated the buffer. * @ah: The address handle to use when sending the MAD. * @context: User-controlled context fields. * @hdr_len: Indicates the size of the data header of the MAD. This length * includes the common MAD, RMPP, and class specific headers. * @data_len: Indicates the total size of user-transferred data. * @seg_count: The number of RMPP segments allocated for this send. * @seg_size: Size of each RMPP segment. * @timeout_ms: Time to wait for a response. * @retries: Number of times to retry a request for a response. For MADs * using RMPP, this applies per window. On completion, returns the number * of retries needed to complete the transfer. * * Users are responsible for initializing the MAD buffer itself, with the * exception of any RMPP header. Additional segment buffer space allocated * beyond data_len is padding. */ struct ib_mad_send_buf { struct ib_mad_send_buf *next; void *mad; struct ib_mad_agent *mad_agent; struct ib_ah *ah; void *context[2]; int hdr_len; int data_len; int seg_count; int seg_size; int timeout_ms; int retries; }; /** * ib_response_mad - Returns if the specified MAD has been generated in * response to a sent request or trap. */ int ib_response_mad(struct ib_mad *mad); /** * ib_get_rmpp_resptime - Returns the RMPP response time. * @rmpp_hdr: An RMPP header. */ static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr) { return rmpp_hdr->rmpp_rtime_flags >> 3; } /** * ib_get_rmpp_flags - Returns the RMPP flags. * @rmpp_hdr: An RMPP header. */ static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr) { return rmpp_hdr->rmpp_rtime_flags & 0x7; } /** * ib_set_rmpp_resptime - Sets the response time in an RMPP header. * @rmpp_hdr: An RMPP header. * @rtime: The response time to set. */ static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime) { rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3); } /** * ib_set_rmpp_flags - Sets the flags in an RMPP header. * @rmpp_hdr: An RMPP header. * @flags: The flags to set. */ static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags) { rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF8) | (flags & 0x7); } struct ib_mad_agent; struct ib_mad_send_wc; struct ib_mad_recv_wc; /** * ib_mad_send_handler - callback handler for a sent MAD. * @mad_agent: MAD agent that sent the MAD. * @mad_send_wc: Send work completion information on the sent MAD. */ typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent, struct ib_mad_send_wc *mad_send_wc); /** * ib_mad_snoop_handler - Callback handler for snooping sent MADs. * @mad_agent: MAD agent that snooped the MAD. * @send_wr: Work request information on the sent MAD. * @mad_send_wc: Work completion information on the sent MAD. Valid * only for snooping that occurs on a send completion. * * Clients snooping MADs should not modify data referenced by the @send_wr * or @mad_send_wc. */ typedef void (*ib_mad_snoop_handler)(struct ib_mad_agent *mad_agent, struct ib_mad_send_buf *send_buf, struct ib_mad_send_wc *mad_send_wc); /** * ib_mad_recv_handler - callback handler for a received MAD. * @mad_agent: MAD agent requesting the received MAD. * @mad_recv_wc: Received work completion information on the received MAD. * * MADs received in response to a send request operation will be handed to * the user before the send operation completes. All data buffers given * to registered agents through this routine are owned by the receiving * client, except for snooping agents. Clients snooping MADs should not * modify the data referenced by @mad_recv_wc. */ typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent, struct ib_mad_recv_wc *mad_recv_wc); /** * ib_mad_agent - Used to track MAD registration with the access layer. * @device: Reference to device registration is on. * @qp: Reference to QP used for sending and receiving MADs. * @mr: Memory region for system memory usable for DMA. * @recv_handler: Callback handler for a received MAD. * @send_handler: Callback handler for a sent MAD. * @snoop_handler: Callback handler for snooped sent MADs. * @context: User-specified context associated with this registration. * @hi_tid: Access layer assigned transaction ID for this client. * Unsolicited MADs sent by this client will have the upper 32-bits * of their TID set to this value. * @port_num: Port number on which QP is registered * @rmpp_version: If set, indicates the RMPP version used by this agent. */ struct ib_mad_agent { struct ib_device *device; struct ib_qp *qp; struct ib_mr *mr; ib_mad_recv_handler recv_handler; ib_mad_send_handler send_handler; ib_mad_snoop_handler snoop_handler; void *context; u32 hi_tid; u8 port_num; u8 rmpp_version; }; /** * ib_mad_send_wc - MAD send completion information. * @send_buf: Send MAD data buffer associated with the send MAD request. * @status: Completion status. * @vendor_err: Optional vendor error information returned with a failed * request. */ struct ib_mad_send_wc { struct ib_mad_send_buf *send_buf; enum ib_wc_status status; u32 vendor_err; }; /** * ib_mad_recv_buf - received MAD buffer information. * @list: Reference to next data buffer for a received RMPP MAD. * @grh: References a data buffer containing the global route header. * The data refereced by this buffer is only valid if the GRH is * valid. * @mad: References the start of the received MAD. */ struct ib_mad_recv_buf { struct list_head list; struct ib_grh *grh; struct ib_mad *mad; }; /** * ib_mad_recv_wc - received MAD information. * @wc: Completion information for the received data. * @recv_buf: Specifies the location of the received data buffer(s). * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers. * @mad_len: The length of the received MAD, without duplicated headers. * * For received response, the wr_id contains a pointer to the ib_mad_send_buf * for the corresponding send request. */ struct ib_mad_recv_wc { struct ib_wc *wc; struct ib_mad_recv_buf recv_buf; struct list_head rmpp_list; int mad_len; }; /** * ib_mad_reg_req - MAD registration request * @mgmt_class: Indicates which management class of MADs should be receive * by the caller. This field is only required if the user wishes to * receive unsolicited MADs, otherwise it should be 0. * @mgmt_class_version: Indicates which version of MADs for the given * management class to receive. * @oui: Indicates IEEE OUI when mgmt_class is a vendor class * in the range from 0x30 to 0x4f. Otherwise not used. * @method_mask: The caller will receive unsolicited MADs for any method * where @method_mask = 1. */ struct ib_mad_reg_req { u8 mgmt_class; u8 mgmt_class_version; u8 oui[3]; DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS); }; /** * ib_register_mad_agent - Register to send/receive MADs. * @device: The device to register with. * @port_num: The port on the specified device to use. * @qp_type: Specifies which QP to access. Must be either * IB_QPT_SMI or IB_QPT_GSI. * @mad_reg_req: Specifies which unsolicited MADs should be received * by the caller. This parameter may be NULL if the caller only * wishes to receive solicited responses. * @rmpp_version: If set, indicates that the client will send * and receive MADs that contain the RMPP header for the given version. * If set to 0, indicates that RMPP is not used by this client. * @send_handler: The completion callback routine invoked after a send * request has completed. * @recv_handler: The completion callback routine invoked for a received * MAD. * @context: User specified context associated with the registration. */ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, u8 port_num, enum ib_qp_type qp_type, struct ib_mad_reg_req *mad_reg_req, u8 rmpp_version, ib_mad_send_handler send_handler, ib_mad_recv_handler recv_handler, void *context); enum ib_mad_snoop_flags { /*IB_MAD_SNOOP_POSTED_SENDS = 1,*/ /*IB_MAD_SNOOP_RMPP_SENDS = (1<<1),*/ IB_MAD_SNOOP_SEND_COMPLETIONS = (1<<2), /*IB_MAD_SNOOP_RMPP_SEND_COMPLETIONS = (1<<3),*/ IB_MAD_SNOOP_RECVS = (1<<4) /*IB_MAD_SNOOP_RMPP_RECVS = (1<<5),*/ /*IB_MAD_SNOOP_REDIRECTED_QPS = (1<<6)*/ }; /** * ib_register_mad_snoop - Register to snoop sent and received MADs. * @device: The device to register with. * @port_num: The port on the specified device to use. * @qp_type: Specifies which QP traffic to snoop. Must be either * IB_QPT_SMI or IB_QPT_GSI. * @mad_snoop_flags: Specifies information where snooping occurs. * @send_handler: The callback routine invoked for a snooped send. * @recv_handler: The callback routine invoked for a snooped receive. * @context: User specified context associated with the registration. */ struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device, u8 port_num, enum ib_qp_type qp_type, int mad_snoop_flags, ib_mad_snoop_handler snoop_handler, ib_mad_recv_handler recv_handler, void *context); /** * ib_unregister_mad_agent - Unregisters a client from using MAD services. * @mad_agent: Corresponding MAD registration request to deregister. * * After invoking this routine, MAD services are no longer usable by the * client on the associated QP. */ int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent); /** * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated * with the registered client. * @send_buf: Specifies the information needed to send the MAD(s). * @bad_send_buf: Specifies the MAD on which an error was encountered. This * parameter is optional if only a single MAD is posted. * * Sent MADs are not guaranteed to complete in the order that they were posted. * * If the MAD requires RMPP, the data buffer should contain a single copy * of the common MAD, RMPP, and class specific headers, followed by the class * defined data. If the class defined data would not divide evenly into * RMPP segments, then space must be allocated at the end of the referenced * buffer for any required padding. To indicate the amount of class defined * data being transferred, the paylen_newwin field in the RMPP header should * be set to the size of the class specific header plus the amount of class * defined data being transferred. The paylen_newwin field should be * specified in network-byte order. */ int ib_post_send_mad(struct ib_mad_send_buf *send_buf, struct ib_mad_send_buf **bad_send_buf); /** * ib_free_recv_mad - Returns data buffers used to receive a MAD. * @mad_recv_wc: Work completion information for a received MAD. * * Clients receiving MADs through their ib_mad_recv_handler must call this * routine to return the work completion buffers to the access layer. */ void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc); /** * ib_cancel_mad - Cancels an outstanding send MAD operation. * @mad_agent: Specifies the registration associated with sent MAD. * @send_buf: Indicates the MAD to cancel. * * MADs will be returned to the user through the corresponding * ib_mad_send_handler. */ void ib_cancel_mad(struct ib_mad_agent *mad_agent, struct ib_mad_send_buf *send_buf); /** * ib_modify_mad - Modifies an outstanding send MAD operation. * @mad_agent: Specifies the registration associated with sent MAD. * @send_buf: Indicates the MAD to modify. * @timeout_ms: New timeout value for sent MAD. * * This call will reset the timeout value for a sent MAD to the specified * value. */ int ib_modify_mad(struct ib_mad_agent *mad_agent, struct ib_mad_send_buf *send_buf, u32 timeout_ms); /** * ib_redirect_mad_qp - Registers a QP for MAD services. * @qp: Reference to a QP that requires MAD services. * @rmpp_version: If set, indicates that the client will send * and receive MADs that contain the RMPP header for the given version. * If set to 0, indicates that RMPP is not used by this client. * @send_handler: The completion callback routine invoked after a send * request has completed. * @recv_handler: The completion callback routine invoked for a received * MAD. * @context: User specified context associated with the registration. * * Use of this call allows clients to use MAD services, such as RMPP, * on user-owned QPs. After calling this routine, users may send * MADs on the specified QP by calling ib_mad_post_send. */ struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp, u8 rmpp_version, ib_mad_send_handler send_handler, ib_mad_recv_handler recv_handler, void *context); /** * ib_process_mad_wc - Processes a work completion associated with a * MAD sent or received on a redirected QP. * @mad_agent: Specifies the registered MAD service using the redirected QP. * @wc: References a work completion associated with a sent or received * MAD segment. * * This routine is used to complete or continue processing on a MAD request. * If the work completion is associated with a send operation, calling * this routine is required to continue an RMPP transfer or to wait for a * corresponding response, if it is a request. If the work completion is * associated with a receive operation, calling this routine is required to * process an inbound or outbound RMPP transfer, or to match a response MAD * with its corresponding request. */ int ib_process_mad_wc(struct ib_mad_agent *mad_agent, struct ib_wc *wc); /** * ib_create_send_mad - Allocate and initialize a data buffer and work request * for sending a MAD. * @mad_agent: Specifies the registered MAD service to associate with the MAD. * @remote_qpn: Specifies the QPN of the receiving node. * @pkey_index: Specifies which PKey the MAD will be sent using. This field * is valid only if the remote_qpn is QP 1. * @rmpp_active: Indicates if the send will enable RMPP. * @hdr_len: Indicates the size of the data header of the MAD. This length * should include the common MAD header, RMPP header, plus any class * specific header. * @data_len: Indicates the size of any user-transferred data. The call will * automatically adjust the allocated buffer size to account for any * additional padding that may be necessary. * @gfp_mask: GFP mask used for the memory allocation. * * This routine allocates a MAD for sending. The returned MAD send buffer * will reference a data buffer usable for sending a MAD, along * with an initialized work request structure. Users may modify the returned * MAD data buffer before posting the send. * * The returned MAD header, class specific headers, and any padding will be * cleared. Users are responsible for initializing the common MAD header, * any class specific header, and MAD data area. * If @rmpp_active is set, the RMPP header will be initialized for sending. */ struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent, u32 remote_qpn, u16 pkey_index, int rmpp_active, int hdr_len, int data_len, gfp_t gfp_mask); /** * ib_is_mad_class_rmpp - returns whether given management class * supports RMPP. * @mgmt_class: management class * * This routine returns whether the management class supports RMPP. */ int ib_is_mad_class_rmpp(u8 mgmt_class); /** * ib_get_mad_data_offset - returns the data offset for a given * management class. * @mgmt_class: management class * * This routine returns the data offset in the MAD for the management * class requested. */ int ib_get_mad_data_offset(u8 mgmt_class); /** * ib_get_rmpp_segment - returns the data buffer for a given RMPP segment. * @send_buf: Previously allocated send data buffer. * @seg_num: number of segment to return * * This routine returns a pointer to the data buffer of an RMPP MAD. * Users must provide synchronization to @send_buf around this call. */ void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num); /** * ib_free_send_mad - Returns data buffers used to send a MAD. * @send_buf: Previously allocated send data buffer. */ void ib_free_send_mad(struct ib_mad_send_buf *send_buf); #endif /* IB_MAD_H */