/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* * Copyright (c) 2004 Topspin Communications. All rights reserved. * Copyright (c) 2005 Voltaire, Inc. All rights reserved. * Copyright (c) 2006 Intel Corporation. All rights reserved.
*/
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
};
/* * There are 4 types of join states: * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember. * The order corresponds to JoinState bits in MCMemberRecord.
*/ enum ib_sa_mc_join_states {
FULLMEMBER_JOIN,
NONMEMBER_JOIN,
SENDONLY_NONMEBER_JOIN,
SENDONLY_FULLMEMBER_JOIN,
NUM_JOIN_MEMBERSHIP_TYPES,
};
/* * 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.
*/
/** * struct sa_path_rec_roce - RoCE specific portion of the path record entry * @route_resolved: When set, it indicates that this route is already * resolved for this path record entry. * @dmac: Destination mac address for the given DGID entry * of the path record entry.
*/ struct sa_path_rec_roce { bool route_resolved;
u8 dmac[ETH_ALEN];
};
/** * 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,
u32 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, u32 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, u32 port_num, struct ib_sa_mcmember_rec *rec, struct net_device *ndev, enum ib_gid_type gid_type, struct rdma_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 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 sa_path_rec *rec);
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