IB/core: Support for CMA multicast join flags
Added UCMA and CMA support for multicast join flags. Flags are
passed using UCMA CM join command previously reserved fields.
Currently supporting two join flags indicating two different
multicast JoinStates:
1. Full Member:
The initiator creates the Multicast group(MCG) if it wasn't
previously created, can send Multicast messages to the group
and receive messages from the MCG.
2. Send Only Full Member:
The initiator creates the Multicast group(MCG) if it wasn't
previously created, can send Multicast messages to the group
but doesn't receive any messages from the MCG.
IB: Send Only Full Member requires a query of ClassPortInfo
to determine if SM/SA supports this option. If SM/SA
doesn't support Send-Only there will be no join request
sent and an error will be returned.
ETH: When Send Only Full Member is requested no IGMP join
will be sent.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed by: Hal Rosenstock <hal@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h
index 3840416..5ee7aab 100644
--- a/include/rdma/ib_sa.h
+++ b/include/rdma/ib_sa.h
@@ -94,6 +94,19 @@
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,
+};
+
#define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT BIT(12)
/*
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index afe44fd..81fb1d1 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -333,11 +333,13 @@
* address.
* @id: Communication identifier associated with the request.
* @addr: Multicast address identifying the group to join.
+ * @join_state: Multicast JoinState bitmap requested by port.
+ * Bitmap is based on IB_SA_MCMEMBER_REC_JOIN_STATE bits.
* @context: User-defined context associated with the join request, returned
* to the user through the private_data pointer in multicast events.
*/
int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
- void *context);
+ u8 join_state, void *context);
/**
* rdma_leave_multicast - Leave the multicast group specified by the given
diff --git a/include/uapi/rdma/rdma_user_cm.h b/include/uapi/rdma/rdma_user_cm.h
index 3066718..01923d4 100644
--- a/include/uapi/rdma/rdma_user_cm.h
+++ b/include/uapi/rdma/rdma_user_cm.h
@@ -244,12 +244,19 @@
__u32 id;
};
+/* Multicast join flags */
+enum {
+ RDMA_MC_JOIN_FLAG_FULLMEMBER,
+ RDMA_MC_JOIN_FLAG_SENDONLY_FULLMEMBER,
+ RDMA_MC_JOIN_FLAG_RESERVED,
+};
+
struct rdma_ucm_join_mcast {
__u64 response; /* rdma_ucma_create_id_resp */
__u64 uid;
__u32 id;
__u16 addr_size;
- __u16 reserved;
+ __u16 join_flags;
struct sockaddr_storage addr;
};