File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h
new file mode 100644
index 0000000..b43e64d
--- /dev/null
+++ b/include/rdma/ib_sa.h
@@ -0,0 +1,439 @@
+/*
+ * 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 <linux/netdevice.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;
+ u8 raw_traffic;
+ /* reserved */
+ __be32 flow_label;
+ u8 hop_limit;
+ u8 traffic_class;
+ u8 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 dmac[ETH_ALEN];
+ /* ignored in IB */
+ int ifindex;
+ /* ignored in IB */
+ struct net *net;
+};
+
+static inline struct net_device *ib_get_ndev_from_path(struct ib_sa_path_rec *rec)
+{
+ return rec->net ? dev_get_by_index(rec->net, rec->ifindex) : NULL;
+}
+
+#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;
+ u8 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 */