diff options
author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/net/infiniband/ib_mcast.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/net/infiniband/ib_mcast.c')
-rw-r--r-- | qemu/roms/ipxe/src/net/infiniband/ib_mcast.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/net/infiniband/ib_mcast.c b/qemu/roms/ipxe/src/net/infiniband/ib_mcast.c new file mode 100644 index 000000000..0a5e72a37 --- /dev/null +++ b/qemu/roms/ipxe/src/net/infiniband/ib_mcast.c @@ -0,0 +1,213 @@ +/* + * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include <stdint.h> +#include <string.h> +#include <byteswap.h> +#include <errno.h> +#include <ipxe/list.h> +#include <ipxe/infiniband.h> +#include <ipxe/ib_mi.h> +#include <ipxe/ib_mcast.h> + +/** @file + * + * Infiniband multicast groups + * + */ + +/** + * Generate multicast membership MAD + * + * @v ibdev Infiniband device + * @v gid Multicast GID + * @v join Join (rather than leave) group + * @v mad MAD to fill in + */ +static void ib_mcast_mad ( struct ib_device *ibdev, union ib_gid *gid, + int join, union ib_mad *mad ) { + struct ib_mad_sa *sa = &mad->sa; + + /* Construct multicast membership record request */ + memset ( sa, 0, sizeof ( *sa ) ); + sa->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; + sa->mad_hdr.class_version = IB_SA_CLASS_VERSION; + sa->mad_hdr.method = + ( join ? IB_MGMT_METHOD_SET : IB_MGMT_METHOD_DELETE ); + sa->mad_hdr.attr_id = htons ( IB_SA_ATTR_MC_MEMBER_REC ); + sa->sa_hdr.comp_mask[1] = + htonl ( IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | + IB_SA_MCMEMBER_REC_JOIN_STATE ); + sa->sa_data.mc_member_record.scope__join_state = 1; + memcpy ( &sa->sa_data.mc_member_record.mgid, gid, + sizeof ( sa->sa_data.mc_member_record.mgid ) ); + memcpy ( &sa->sa_data.mc_member_record.port_gid, &ibdev->gid, + sizeof ( sa->sa_data.mc_member_record.port_gid ) ); +} + +/** + * Handle multicast membership record join response + * + * @v ibdev Infiniband device + * @v mi Management interface + * @v madx Management transaction + * @v rc Status code + * @v mad Received MAD (or NULL on error) + * @v av Source address vector (or NULL on error) + */ +static void ib_mcast_complete ( struct ib_device *ibdev, + struct ib_mad_interface *mi __unused, + struct ib_mad_transaction *madx, + int rc, union ib_mad *mad, + struct ib_address_vector *av __unused ) { + struct ib_mc_membership *membership = ib_madx_get_ownerdata ( madx ); + struct ib_queue_pair *qp = membership->qp; + union ib_gid *gid = &membership->gid; + struct ib_mc_member_record *mc_member_record = + &mad->sa.sa_data.mc_member_record; + int joined; + unsigned long qkey; + + /* Report failures */ + if ( ( rc == 0 ) && ( mad->hdr.status != htons ( IB_MGMT_STATUS_OK ) )) + rc = -ENOTCONN; + if ( rc != 0 ) { + DBGC ( ibdev, "IBDEV %p QPN %lx join failed: %s\n", + ibdev, qp->qpn, strerror ( rc ) ); + goto out; + } + + /* Extract values from MAD */ + joined = ( mad->hdr.method == IB_MGMT_METHOD_GET_RESP ); + qkey = ntohl ( mc_member_record->qkey ); + DBGC ( ibdev, "IBDEV %p QPN %lx %s " IB_GID_FMT " qkey %lx\n", + ibdev, qp->qpn, ( joined ? "joined" : "left" ), + IB_GID_ARGS ( gid ), qkey ); + + /* Set queue key */ + qp->qkey = qkey; + if ( ( rc = ib_modify_qp ( ibdev, qp ) ) != 0 ) { + DBGC ( ibdev, "IBDEV %p QPN %lx could not modify qkey: %s\n", + ibdev, qp->qpn, strerror ( rc ) ); + goto out; + } + + out: + /* Destroy the completed transaction */ + ib_destroy_madx ( ibdev, mi, madx ); + membership->madx = NULL; + + /* Hand off to upper completion handler */ + membership->complete ( ibdev, qp, membership, rc, mad ); +} + +/** Multicast membership management transaction completion operations */ +static struct ib_mad_transaction_operations ib_mcast_op = { + .complete = ib_mcast_complete, +}; + +/** + * Join multicast group + * + * @v ibdev Infiniband device + * @v qp Queue pair + * @v membership Multicast group membership + * @v gid Multicast GID to join + * @v joined Join completion handler + * @ret rc Return status code + */ +int ib_mcast_join ( struct ib_device *ibdev, struct ib_queue_pair *qp, + struct ib_mc_membership *membership, union ib_gid *gid, + void ( * complete ) ( struct ib_device *ibdev, + struct ib_queue_pair *qp, + struct ib_mc_membership *membership, + int rc, union ib_mad *mad ) ) { + union ib_mad mad; + int rc; + + DBGC ( ibdev, "IBDEV %p QPN %lx joining " IB_GID_FMT "\n", + ibdev, qp->qpn, IB_GID_ARGS ( gid ) ); + + /* Initialise structure */ + membership->qp = qp; + memcpy ( &membership->gid, gid, sizeof ( membership->gid ) ); + membership->complete = complete; + + /* Attach queue pair to multicast GID */ + if ( ( rc = ib_mcast_attach ( ibdev, qp, gid ) ) != 0 ) { + DBGC ( ibdev, "IBDEV %p QPN %lx could not attach: %s\n", + ibdev, qp->qpn, strerror ( rc ) ); + goto err_mcast_attach; + } + + /* Initiate multicast membership join */ + ib_mcast_mad ( ibdev, gid, 1, &mad ); + membership->madx = ib_create_madx ( ibdev, ibdev->gsi, &mad, NULL, + &ib_mcast_op ); + if ( ! membership->madx ) { + DBGC ( ibdev, "IBDEV %p QPN %lx could not create join " + "transaction\n", ibdev, qp->qpn ); + rc = -ENOMEM; + goto err_create_madx; + } + ib_madx_set_ownerdata ( membership->madx, membership ); + + return 0; + + ib_destroy_madx ( ibdev, ibdev->gsi, membership->madx ); + err_create_madx: + ib_mcast_detach ( ibdev, qp, gid ); + err_mcast_attach: + return rc; +} + +/** + * Leave multicast group + * + * @v ibdev Infiniband device + * @v qp Queue pair + * @v membership Multicast group membership + */ +void ib_mcast_leave ( struct ib_device *ibdev, struct ib_queue_pair *qp, + struct ib_mc_membership *membership ) { + union ib_gid *gid = &membership->gid; + union ib_mad mad; + int rc; + + DBGC ( ibdev, "IBDEV %p QPN %lx leaving " IB_GID_FMT "\n", + ibdev, qp->qpn, IB_GID_ARGS ( gid ) ); + + /* Detach from multicast GID */ + ib_mcast_detach ( ibdev, qp, &membership->gid ); + + /* Cancel multicast membership join, if applicable */ + if ( membership->madx ) { + ib_destroy_madx ( ibdev, ibdev->gsi, membership->madx ); + membership->madx = NULL; + } + + /* Send a single group leave MAD */ + ib_mcast_mad ( ibdev, &membership->gid, 0, &mad ); + if ( ( rc = ib_mi_send ( ibdev, ibdev->gsi, &mad, NULL ) ) != 0 ) { + DBGC ( ibdev, "IBDEV %p QPN %lx could not send leave request: " + "%s\n", ibdev, qp->qpn, strerror ( rc ) ); + } +} |