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Diffstat (limited to 'kernel/include/rdma/ib_sa.h')
| -rw-r--r-- | kernel/include/rdma/ib_sa.h | 431 |
1 files changed, 431 insertions, 0 deletions
diff --git a/kernel/include/rdma/ib_sa.h b/kernel/include/rdma/ib_sa.h new file mode 100644 index 000000000..7e071a6ab --- /dev/null +++ b/kernel/include/rdma/ib_sa.h @@ -0,0 +1,431 @@ +/* + * Copyright (c) 2004 Topspin Communications. All rights reserved. + * Copyright (c) 2005 Voltaire, Inc. All rights reserved. + * Copyright (c) 2006 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. + */ + +#ifndef IB_SA_H +#define IB_SA_H + +#include <linux/completion.h> +#include <linux/compiler.h> + +#include <linux/atomic.h> + +#include <rdma/ib_verbs.h> +#include <rdma/ib_mad.h> + +enum { + IB_SA_CLASS_VERSION = 2, /* IB spec version 1.1/1.2 */ + + IB_SA_METHOD_GET_TABLE = 0x12, + IB_SA_METHOD_GET_TABLE_RESP = 0x92, + IB_SA_METHOD_DELETE = 0x15, + IB_SA_METHOD_DELETE_RESP = 0x95, + IB_SA_METHOD_GET_MULTI = 0x14, + IB_SA_METHOD_GET_MULTI_RESP = 0x94, + IB_SA_METHOD_GET_TRACE_TBL = 0x13 +}; + +enum { + IB_SA_ATTR_CLASS_PORTINFO = 0x01, + IB_SA_ATTR_NOTICE = 0x02, + IB_SA_ATTR_INFORM_INFO = 0x03, + IB_SA_ATTR_NODE_REC = 0x11, + IB_SA_ATTR_PORT_INFO_REC = 0x12, + IB_SA_ATTR_SL2VL_REC = 0x13, + IB_SA_ATTR_SWITCH_REC = 0x14, + IB_SA_ATTR_LINEAR_FDB_REC = 0x15, + IB_SA_ATTR_RANDOM_FDB_REC = 0x16, + IB_SA_ATTR_MCAST_FDB_REC = 0x17, + IB_SA_ATTR_SM_INFO_REC = 0x18, + IB_SA_ATTR_LINK_REC = 0x20, + IB_SA_ATTR_GUID_INFO_REC = 0x30, + IB_SA_ATTR_SERVICE_REC = 0x31, + IB_SA_ATTR_PARTITION_REC = 0x33, + IB_SA_ATTR_PATH_REC = 0x35, + IB_SA_ATTR_VL_ARB_REC = 0x36, + IB_SA_ATTR_MC_MEMBER_REC = 0x38, + IB_SA_ATTR_TRACE_REC = 0x39, + IB_SA_ATTR_MULTI_PATH_REC = 0x3a, + IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b, + IB_SA_ATTR_INFORM_INFO_REC = 0xf3 +}; + +enum ib_sa_selector { + IB_SA_GT = 0, + IB_SA_LT = 1, + IB_SA_EQ = 2, + /* + * The meaning of "best" depends on the attribute: for + * example, for MTU best will return the largest available + * MTU, while for packet life time, best will return the + * smallest available life time. + */ + IB_SA_BEST = 3 +}; + +/* + * Structures for SA records are named "struct ib_sa_xxx_rec." No + * attempt is made to pack structures to match the physical layout of + * SA records in SA MADs; all packing and unpacking is handled by the + * SA query code. + * + * For a record with structure ib_sa_xxx_rec, the naming convention + * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we + * never use different abbreviations or otherwise change the spelling + * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY). + * + * Reserved rows are indicated with comments to help maintainability. + */ + +#define IB_SA_PATH_REC_SERVICE_ID (IB_SA_COMP_MASK( 0) |\ + IB_SA_COMP_MASK( 1)) +#define IB_SA_PATH_REC_DGID IB_SA_COMP_MASK( 2) +#define IB_SA_PATH_REC_SGID IB_SA_COMP_MASK( 3) +#define IB_SA_PATH_REC_DLID IB_SA_COMP_MASK( 4) +#define IB_SA_PATH_REC_SLID IB_SA_COMP_MASK( 5) +#define IB_SA_PATH_REC_RAW_TRAFFIC IB_SA_COMP_MASK( 6) +/* reserved: 7 */ +#define IB_SA_PATH_REC_FLOW_LABEL IB_SA_COMP_MASK( 8) +#define IB_SA_PATH_REC_HOP_LIMIT IB_SA_COMP_MASK( 9) +#define IB_SA_PATH_REC_TRAFFIC_CLASS IB_SA_COMP_MASK(10) +#define IB_SA_PATH_REC_REVERSIBLE IB_SA_COMP_MASK(11) +#define IB_SA_PATH_REC_NUMB_PATH IB_SA_COMP_MASK(12) +#define IB_SA_PATH_REC_PKEY IB_SA_COMP_MASK(13) +#define IB_SA_PATH_REC_QOS_CLASS IB_SA_COMP_MASK(14) +#define IB_SA_PATH_REC_SL IB_SA_COMP_MASK(15) +#define IB_SA_PATH_REC_MTU_SELECTOR IB_SA_COMP_MASK(16) +#define IB_SA_PATH_REC_MTU IB_SA_COMP_MASK(17) +#define IB_SA_PATH_REC_RATE_SELECTOR IB_SA_COMP_MASK(18) +#define IB_SA_PATH_REC_RATE IB_SA_COMP_MASK(19) +#define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(20) +#define IB_SA_PATH_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(21) +#define IB_SA_PATH_REC_PREFERENCE IB_SA_COMP_MASK(22) + +struct ib_sa_path_rec { + __be64 service_id; + union ib_gid dgid; + union ib_gid sgid; + __be16 dlid; + __be16 slid; + int raw_traffic; + /* reserved */ + __be32 flow_label; + u8 hop_limit; + u8 traffic_class; + int reversible; + u8 numb_path; + __be16 pkey; + __be16 qos_class; + u8 sl; + u8 mtu_selector; + u8 mtu; + u8 rate_selector; + u8 rate; + u8 packet_life_time_selector; + u8 packet_life_time; + u8 preference; + u8 smac[ETH_ALEN]; + u8 dmac[ETH_ALEN]; + u16 vlan_id; +}; + +#define IB_SA_MCMEMBER_REC_MGID IB_SA_COMP_MASK( 0) +#define IB_SA_MCMEMBER_REC_PORT_GID IB_SA_COMP_MASK( 1) +#define IB_SA_MCMEMBER_REC_QKEY IB_SA_COMP_MASK( 2) +#define IB_SA_MCMEMBER_REC_MLID IB_SA_COMP_MASK( 3) +#define IB_SA_MCMEMBER_REC_MTU_SELECTOR IB_SA_COMP_MASK( 4) +#define IB_SA_MCMEMBER_REC_MTU IB_SA_COMP_MASK( 5) +#define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS IB_SA_COMP_MASK( 6) +#define IB_SA_MCMEMBER_REC_PKEY IB_SA_COMP_MASK( 7) +#define IB_SA_MCMEMBER_REC_RATE_SELECTOR IB_SA_COMP_MASK( 8) +#define IB_SA_MCMEMBER_REC_RATE IB_SA_COMP_MASK( 9) +#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(10) +#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(11) +#define IB_SA_MCMEMBER_REC_SL IB_SA_COMP_MASK(12) +#define IB_SA_MCMEMBER_REC_FLOW_LABEL IB_SA_COMP_MASK(13) +#define IB_SA_MCMEMBER_REC_HOP_LIMIT IB_SA_COMP_MASK(14) +#define IB_SA_MCMEMBER_REC_SCOPE IB_SA_COMP_MASK(15) +#define IB_SA_MCMEMBER_REC_JOIN_STATE IB_SA_COMP_MASK(16) +#define IB_SA_MCMEMBER_REC_PROXY_JOIN IB_SA_COMP_MASK(17) + +struct ib_sa_mcmember_rec { + union ib_gid mgid; + union ib_gid port_gid; + __be32 qkey; + __be16 mlid; + u8 mtu_selector; + u8 mtu; + u8 traffic_class; + __be16 pkey; + u8 rate_selector; + u8 rate; + u8 packet_life_time_selector; + u8 packet_life_time; + u8 sl; + __be32 flow_label; + u8 hop_limit; + u8 scope; + u8 join_state; + int proxy_join; +}; + +/* Service Record Component Mask Sec 15.2.5.14 Ver 1.1 */ +#define IB_SA_SERVICE_REC_SERVICE_ID IB_SA_COMP_MASK( 0) +#define IB_SA_SERVICE_REC_SERVICE_GID IB_SA_COMP_MASK( 1) +#define IB_SA_SERVICE_REC_SERVICE_PKEY IB_SA_COMP_MASK( 2) +/* reserved: 3 */ +#define IB_SA_SERVICE_REC_SERVICE_LEASE IB_SA_COMP_MASK( 4) +#define IB_SA_SERVICE_REC_SERVICE_KEY IB_SA_COMP_MASK( 5) +#define IB_SA_SERVICE_REC_SERVICE_NAME IB_SA_COMP_MASK( 6) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_0 IB_SA_COMP_MASK( 7) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_1 IB_SA_COMP_MASK( 8) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_2 IB_SA_COMP_MASK( 9) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_3 IB_SA_COMP_MASK(10) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_4 IB_SA_COMP_MASK(11) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_5 IB_SA_COMP_MASK(12) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_6 IB_SA_COMP_MASK(13) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_7 IB_SA_COMP_MASK(14) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_8 IB_SA_COMP_MASK(15) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_9 IB_SA_COMP_MASK(16) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_10 IB_SA_COMP_MASK(17) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_11 IB_SA_COMP_MASK(18) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_12 IB_SA_COMP_MASK(19) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_13 IB_SA_COMP_MASK(20) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_14 IB_SA_COMP_MASK(21) +#define IB_SA_SERVICE_REC_SERVICE_DATA8_15 IB_SA_COMP_MASK(22) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_0 IB_SA_COMP_MASK(23) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_1 IB_SA_COMP_MASK(24) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_2 IB_SA_COMP_MASK(25) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_3 IB_SA_COMP_MASK(26) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_4 IB_SA_COMP_MASK(27) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_5 IB_SA_COMP_MASK(28) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_6 IB_SA_COMP_MASK(29) +#define IB_SA_SERVICE_REC_SERVICE_DATA16_7 IB_SA_COMP_MASK(30) +#define IB_SA_SERVICE_REC_SERVICE_DATA32_0 IB_SA_COMP_MASK(31) +#define IB_SA_SERVICE_REC_SERVICE_DATA32_1 IB_SA_COMP_MASK(32) +#define IB_SA_SERVICE_REC_SERVICE_DATA32_2 IB_SA_COMP_MASK(33) +#define IB_SA_SERVICE_REC_SERVICE_DATA32_3 IB_SA_COMP_MASK(34) +#define IB_SA_SERVICE_REC_SERVICE_DATA64_0 IB_SA_COMP_MASK(35) +#define IB_SA_SERVICE_REC_SERVICE_DATA64_1 IB_SA_COMP_MASK(36) + +#define IB_DEFAULT_SERVICE_LEASE 0xFFFFFFFF + +struct ib_sa_service_rec { + u64 id; + union ib_gid gid; + __be16 pkey; + /* reserved */ + u32 lease; + u8 key[16]; + u8 name[64]; + u8 data8[16]; + u16 data16[8]; + u32 data32[4]; + u64 data64[2]; +}; + +#define IB_SA_GUIDINFO_REC_LID IB_SA_COMP_MASK(0) +#define IB_SA_GUIDINFO_REC_BLOCK_NUM IB_SA_COMP_MASK(1) +#define IB_SA_GUIDINFO_REC_RES1 IB_SA_COMP_MASK(2) +#define IB_SA_GUIDINFO_REC_RES2 IB_SA_COMP_MASK(3) +#define IB_SA_GUIDINFO_REC_GID0 IB_SA_COMP_MASK(4) +#define IB_SA_GUIDINFO_REC_GID1 IB_SA_COMP_MASK(5) +#define IB_SA_GUIDINFO_REC_GID2 IB_SA_COMP_MASK(6) +#define IB_SA_GUIDINFO_REC_GID3 IB_SA_COMP_MASK(7) +#define IB_SA_GUIDINFO_REC_GID4 IB_SA_COMP_MASK(8) +#define IB_SA_GUIDINFO_REC_GID5 IB_SA_COMP_MASK(9) +#define IB_SA_GUIDINFO_REC_GID6 IB_SA_COMP_MASK(10) +#define IB_SA_GUIDINFO_REC_GID7 IB_SA_COMP_MASK(11) + +struct ib_sa_guidinfo_rec { + __be16 lid; + u8 block_num; + /* reserved */ + u8 res1; + __be32 res2; + u8 guid_info_list[64]; +}; + +struct ib_sa_client { + atomic_t users; + struct completion comp; +}; + +/** + * ib_sa_register_client - Register an SA client. + */ +void ib_sa_register_client(struct ib_sa_client *client); + +/** + * ib_sa_unregister_client - Deregister an SA client. + * @client: Client object to deregister. + */ +void ib_sa_unregister_client(struct ib_sa_client *client); + +struct ib_sa_query; + +void ib_sa_cancel_query(int id, struct ib_sa_query *query); + +int ib_sa_path_rec_get(struct ib_sa_client *client, + struct ib_device *device, u8 port_num, + struct ib_sa_path_rec *rec, + ib_sa_comp_mask comp_mask, + int timeout_ms, gfp_t gfp_mask, + void (*callback)(int status, + struct ib_sa_path_rec *resp, + void *context), + void *context, + struct ib_sa_query **query); + +int ib_sa_service_rec_query(struct ib_sa_client *client, + struct ib_device *device, u8 port_num, + u8 method, + struct ib_sa_service_rec *rec, + ib_sa_comp_mask comp_mask, + int timeout_ms, gfp_t gfp_mask, + void (*callback)(int status, + struct ib_sa_service_rec *resp, + void *context), + void *context, + struct ib_sa_query **sa_query); + +struct ib_sa_multicast { + struct ib_sa_mcmember_rec rec; + ib_sa_comp_mask comp_mask; + int (*callback)(int status, + struct ib_sa_multicast *multicast); + void *context; +}; + +/** + * ib_sa_join_multicast - Initiates a join request to the specified multicast + * group. + * @client: SA client + * @device: Device associated with the multicast group. + * @port_num: Port on the specified device to associate with the multicast + * group. + * @rec: SA multicast member record specifying group attributes. + * @comp_mask: Component mask indicating which group attributes of %rec are + * valid. + * @gfp_mask: GFP mask for memory allocations. + * @callback: User callback invoked once the join operation completes. + * @context: User specified context stored with the ib_sa_multicast structure. + * + * This call initiates a multicast join request with the SA for the specified + * multicast group. If the join operation is started successfully, it returns + * an ib_sa_multicast structure that is used to track the multicast operation. + * Users must free this structure by calling ib_free_multicast, even if the + * join operation later fails. (The callback status is non-zero.) + * + * If the join operation fails; status will be non-zero, with the following + * failures possible: + * -ETIMEDOUT: The request timed out. + * -EIO: An error occurred sending the query. + * -EINVAL: The MCMemberRecord values differed from the existing group's. + * -ENETRESET: Indicates that an fatal error has occurred on the multicast + * group, and the user must rejoin the group to continue using it. + */ +struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client, + struct ib_device *device, u8 port_num, + struct ib_sa_mcmember_rec *rec, + ib_sa_comp_mask comp_mask, gfp_t gfp_mask, + int (*callback)(int status, + struct ib_sa_multicast + *multicast), + void *context); + +/** + * ib_free_multicast - Frees the multicast tracking structure, and releases + * any reference on the multicast group. + * @multicast: Multicast tracking structure allocated by ib_join_multicast. + * + * This call blocks until the multicast identifier is destroyed. It may + * not be called from within the multicast callback; however, returning a non- + * zero value from the callback will result in destroying the multicast + * tracking structure. + */ +void ib_sa_free_multicast(struct ib_sa_multicast *multicast); + +/** + * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and + * returns it if found. + * @device: Device associated with the multicast group. + * @port_num: Port on the specified device to associate with the multicast + * group. + * @mgid: MGID of multicast group. + * @rec: Location to copy SA multicast member record. + */ +int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num, + union ib_gid *mgid, struct ib_sa_mcmember_rec *rec); + +/** + * ib_init_ah_from_mcmember - Initialize address handle attributes based on + * an SA multicast member record. + */ +int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num, + struct ib_sa_mcmember_rec *rec, + struct ib_ah_attr *ah_attr); + +/** + * ib_init_ah_from_path - Initialize address handle attributes based on an SA + * path record. + */ +int ib_init_ah_from_path(struct ib_device *device, u8 port_num, + struct ib_sa_path_rec *rec, + struct ib_ah_attr *ah_attr); + +/** + * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec + * to IB MAD wire format. + */ +void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute); + +/** + * ib_sa_unpack_path - Convert a path record from MAD format to struct + * ib_sa_path_rec. + */ +void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec); + +/* Support GuidInfoRecord */ +int ib_sa_guid_info_rec_query(struct ib_sa_client *client, + struct ib_device *device, u8 port_num, + struct ib_sa_guidinfo_rec *rec, + ib_sa_comp_mask comp_mask, u8 method, + int timeout_ms, gfp_t gfp_mask, + void (*callback)(int status, + struct ib_sa_guidinfo_rec *resp, + void *context), + void *context, + struct ib_sa_query **sa_query); + +#endif /* IB_SA_H */ |