mirror of
https://github.com/ipxe/ipxe
synced 2025-12-23 21:41:43 +03:00
[infiniband] Update all other MAD users to use a management interface
This commit is contained in:
Michael Brown
@@ -24,10 +24,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#include <byteswap.h>
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#include <errno.h>
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#include <assert.h>
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#include <gpxe/list.h>
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#include <gpxe/process.h>
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#include <gpxe/infiniband.h>
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#include <gpxe/ib_gma.h>
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#include <gpxe/ib_mi.h>
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#include <gpxe/ib_pathrec.h>
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#include <gpxe/ib_cm.h>
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@@ -38,64 +36,170 @@ FILE_LICENCE ( GPL2_OR_LATER );
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*
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*/
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/** An outstanding connection request */
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struct ib_cm_request {
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/** List of all outstanding requests */
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struct list_head list;
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/** Local communication ID */
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uint32_t local_id;
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/** Remote communication ID */
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uint32_t remote_id;
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/** Queue pair */
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struct ib_queue_pair *qp;
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/** Target service ID */
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struct ib_gid_half service_id;
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/** Connection process */
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struct process process;
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/** Notification handler
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*
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* @v qp Queue pair
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* @v rc Connection status code
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* @v private_data Private data
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* @v private_data_len Length of private data
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*/
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void ( * notify ) ( struct ib_queue_pair *qp, int rc,
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void *private_data, size_t private_data_len );
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/** Private data length */
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size_t private_data_len;
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/** Private data */
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uint8_t private_data[0];
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};
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/** List of all outstanding connection requests */
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static LIST_HEAD ( ib_cm_requests );
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/**
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* Send connection request
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* Send "ready to use" response
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*
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* @v request Connection request
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* @v ibdev Infiniband device
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* @v mi Management interface
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* @v conn Connection
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* @v av Address vector
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* @ret rc Return status code
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*/
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static int ib_cm_send_request ( struct ib_cm_request *request ) {
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struct ib_queue_pair *qp = request->qp;
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struct ib_device *ibdev = qp->ibdev;
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struct ib_gma *gma = ibdev->gma;
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static int ib_cm_send_rtu ( struct ib_device *ibdev,
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struct ib_mad_interface *mi,
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struct ib_connection *conn,
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struct ib_address_vector *av ) {
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union ib_mad mad;
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struct ib_mad_cm *cm = &mad.cm;
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struct ib_cm_connect_request *connect_req =
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&cm->cm_data.connect_request;
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size_t private_data_len;
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struct ib_cm_ready_to_use *ready =
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&mad.cm.cm_data.ready_to_use;
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int rc;
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/* Construct "ready to use" response */
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memset ( &mad, 0, sizeof ( mad ) );
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mad.hdr.mgmt_class = IB_MGMT_CLASS_CM;
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mad.hdr.class_version = IB_CM_CLASS_VERSION;
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mad.hdr.method = IB_MGMT_METHOD_SEND;
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mad.hdr.attr_id = htons ( IB_CM_ATTR_READY_TO_USE );
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ready->local_id = htonl ( conn->local_id );
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ready->remote_id = htonl ( conn->remote_id );
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if ( ( rc = ib_mi_send ( ibdev, mi, &mad, av ) ) != 0 ){
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DBGC ( conn, "CM %p could not send RTU: %s\n",
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conn, strerror ( rc ) );
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return rc;
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}
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return 0;
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}
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/**
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* Handle connection request transaction completion
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*
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* @v ibdev Infiniband device
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* @v mi Management interface
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* @v madx Management transaction
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* @v rc Status code
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* @v mad Received MAD (or NULL on error)
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* @v av Source address vector (or NULL on error)
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*/
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static void ib_cm_req_complete ( struct ib_device *ibdev,
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struct ib_mad_interface *mi,
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struct ib_mad_transaction *madx,
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int rc, union ib_mad *mad,
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struct ib_address_vector *av ) {
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struct ib_connection *conn = ib_madx_get_ownerdata ( madx );
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struct ib_queue_pair *qp = conn->qp;
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struct ib_cm_common *common = &mad->cm.cm_data.common;
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struct ib_cm_connect_reply *connect_rep =
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&mad->cm.cm_data.connect_reply;
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struct ib_cm_connect_reject *connect_rej =
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&mad->cm.cm_data.connect_reject;
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void *private_data = NULL;
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size_t private_data_len = 0;
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/* Report failures */
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if ( rc != 0 ) {
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DBGC ( conn, "CM %p connection request failed: %s\n",
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conn, strerror ( rc ) );
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goto out;
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}
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/* Record remote communication ID */
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conn->remote_id = ntohl ( common->local_id );
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/* Handle response */
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switch ( mad->hdr.attr_id ) {
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case htons ( IB_CM_ATTR_CONNECT_REPLY ) :
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/* Extract fields */
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qp->av.qpn = ( ntohl ( connect_rep->local_qpn ) >> 8 );
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qp->send.psn = ( ntohl ( connect_rep->starting_psn ) >> 8 );
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private_data = &connect_rep->private_data;
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private_data_len = sizeof ( connect_rep->private_data );
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DBGC ( conn, "CM %p connected to QPN %lx PSN %x\n",
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conn, qp->av.qpn, qp->send.psn );
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/* Modify queue pair */
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if ( ( rc = ib_modify_qp ( ibdev, qp ) ) != 0 ) {
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DBGC ( conn, "CM %p could not modify queue pair: %s\n",
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conn, strerror ( rc ) );
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goto out;
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}
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/* Send "ready to use" reply */
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if ( ( rc = ib_cm_send_rtu ( ibdev, mi, conn, av ) ) != 0 ) {
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/* Treat as non-fatal */
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rc = 0;
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}
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break;
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case htons ( IB_CM_ATTR_CONNECT_REJECT ) :
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/* Extract fields */
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DBGC ( conn, "CM %p connection rejected (reason %d)\n",
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conn, ntohs ( connect_rej->reason ) );
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private_data = &connect_rej->private_data;
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private_data_len = sizeof ( connect_rej->private_data );
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rc = -ENOTCONN;
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break;
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default:
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DBGC ( conn, "CM %p unexpected response (attribute %04x)\n",
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conn, ntohs ( mad->hdr.attr_id ) );
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rc = -EIO;
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break;
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}
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out:
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/* Destroy the completed transaction */
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ib_destroy_madx ( ibdev, ibdev->gsi, madx );
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conn->madx = NULL;
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/* Hand off to the upper completion handler */
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conn->op->changed ( ibdev, qp, conn, rc, private_data,
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private_data_len );
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}
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/** Connection request operations */
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static struct ib_mad_transaction_operations ib_cm_req_op = {
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.complete = ib_cm_req_complete,
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};
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/**
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* Handle connection path transaction completion
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*
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* @v ibdev Infiniband device
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* @v path Path
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* @v rc Status code
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* @v av Address vector, or NULL on error
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*/
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static void ib_cm_path_complete ( struct ib_device *ibdev,
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struct ib_path *path, int rc,
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struct ib_address_vector *av ) {
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struct ib_connection *conn = ib_path_get_ownerdata ( path );
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struct ib_queue_pair *qp = conn->qp;
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union ib_mad mad;
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struct ib_cm_connect_request *connect_req =
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&mad.cm.cm_data.connect_request;
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size_t private_data_len;
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/* Report failures */
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if ( rc != 0 ) {
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DBGC ( conn, "CM %p path lookup failed: %s\n",
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conn, strerror ( rc ) );
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conn->op->changed ( ibdev, qp, conn, rc, NULL, 0 );
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goto out;
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}
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/* Update queue pair peer path */
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memcpy ( &qp->av, av, sizeof ( qp->av ) );
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/* Construct connection request */
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memset ( cm, 0, sizeof ( *cm ) );
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cm->mad_hdr.base_version = IB_MGMT_BASE_VERSION;
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cm->mad_hdr.mgmt_class = IB_MGMT_CLASS_CM;
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cm->mad_hdr.class_version = IB_CM_CLASS_VERSION;
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cm->mad_hdr.method = IB_MGMT_METHOD_SEND;
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cm->mad_hdr.attr_id = htons ( IB_CM_ATTR_CONNECT_REQUEST );
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connect_req->local_id = htonl ( request->local_id );
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memcpy ( &connect_req->service_id, &request->service_id,
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memset ( &mad, 0, sizeof ( mad ) );
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mad.hdr.mgmt_class = IB_MGMT_CLASS_CM;
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mad.hdr.class_version = IB_CM_CLASS_VERSION;
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mad.hdr.method = IB_MGMT_METHOD_SEND;
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mad.hdr.attr_id = htons ( IB_CM_ATTR_CONNECT_REQUEST );
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connect_req->local_id = htonl ( conn->local_id );
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memcpy ( &connect_req->service_id, &conn->service_id,
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sizeof ( connect_req->service_id ) );
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ib_get_hca_info ( ibdev, &connect_req->local_ca );
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connect_req->local_qpn__responder_resources =
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@@ -113,217 +217,116 @@ static int ib_cm_send_request ( struct ib_cm_request *request ) {
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connect_req->max_cm_retries__srq =
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( ( 0x0f << 4 ) | ( 0 << 3 ) );
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connect_req->primary.local_lid = htons ( ibdev->lid );
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connect_req->primary.remote_lid = htons ( request->qp->av.lid );
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connect_req->primary.remote_lid = htons ( conn->qp->av.lid );
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memcpy ( &connect_req->primary.local_gid, &ibdev->gid,
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sizeof ( connect_req->primary.local_gid ) );
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memcpy ( &connect_req->primary.remote_gid, &request->qp->av.gid,
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memcpy ( &connect_req->primary.remote_gid, &conn->qp->av.gid,
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sizeof ( connect_req->primary.remote_gid ) );
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connect_req->primary.flow_label__rate =
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htonl ( ( 0 << 12 ) | ( request->qp->av.rate << 0 ) );
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htonl ( ( 0 << 12 ) | ( conn->qp->av.rate << 0 ) );
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connect_req->primary.hop_limit = 0;
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connect_req->primary.sl__subnet_local =
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( ( request->qp->av.sl << 4 ) | ( 1 << 3 ) );
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( ( conn->qp->av.sl << 4 ) | ( 1 << 3 ) );
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connect_req->primary.local_ack_timeout = ( 0x13 << 3 );
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private_data_len = request->private_data_len;
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private_data_len = conn->private_data_len;
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if ( private_data_len > sizeof ( connect_req->private_data ) )
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private_data_len = sizeof ( connect_req->private_data );
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memcpy ( &connect_req->private_data, &request->private_data,
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memcpy ( &connect_req->private_data, &conn->private_data,
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private_data_len );
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/* Send request */
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if ( ( rc = ib_gma_request ( gma, &mad, NULL, 1 ) ) != 0 ) {
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DBGC ( gma, "GMA %p could not send connection request: %s\n",
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gma, strerror ( rc ) );
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return rc;
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/* Create connection request */
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conn->madx = ib_create_madx ( ibdev, ibdev->gsi, &mad, NULL,
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&ib_cm_req_op );
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if ( ! conn->madx ) {
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DBGC ( conn, "CM %p could not create connection request\n",
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conn );
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conn->op->changed ( ibdev, qp, conn, rc, NULL, 0 );
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goto out;
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}
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ib_madx_set_ownerdata ( conn->madx, conn );
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return 0;
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out:
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/* Destroy the completed transaction */
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ib_destroy_path ( ibdev, path );
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conn->path = NULL;
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}
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/**
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* Connection request process step
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*
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* @v process Connection request process
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*/
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static void ib_cm_step ( struct process *process ) {
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struct ib_cm_request *request =
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container_of ( process, struct ib_cm_request, process );
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struct ib_queue_pair *qp = request->qp;
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struct ib_device *ibdev = qp->ibdev;
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int rc;
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/* Wait until path can be resolved */
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if ( ( rc = ib_resolve_path ( ibdev, &request->qp->av ) ) != 0 )
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return;
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/* Wait until request can be sent */
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if ( ( rc = ib_cm_send_request ( request ) ) != 0 )
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return;
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/* Stop process */
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process_del ( process );
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}
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/**
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* Identify connection request by communication ID
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*
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* @v local_id Local communication ID
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* @v remote_id Remote communication ID
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* @ret request Connection request, or NULL
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*/
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static struct ib_cm_request * ib_cm_find_request ( uint32_t local_id,
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uint32_t remote_id ) {
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struct ib_cm_request *request;
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list_for_each_entry ( request, &ib_cm_requests, list ) {
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if ( request->local_id == local_id ) {
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request->remote_id = remote_id;
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return request;
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}
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}
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return NULL;
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}
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/**
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* Handle connection reply
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*
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* @v gma General management agent
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* @v mad MAD
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* @ret response MAD response
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*/
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static union ib_mad * ib_cm_connect_reply ( struct ib_gma *gma,
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union ib_mad *mad ) {
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struct ib_cm_connect_reply *connect_rep =
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&mad->cm.cm_data.connect_reply;
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struct ib_cm_ready_to_use *ready =
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&mad->cm.cm_data.ready_to_use;
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struct ib_cm_request *request;
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int rc;
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/* Identify request */
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request = ib_cm_find_request ( ntohl ( connect_rep->remote_id ),
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ntohl ( connect_rep->local_id ) );
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if ( ! request ) {
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DBGC ( gma, "GMA %p received connection reply with unknown "
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"ID %08x\n", gma, ntohl ( connect_rep->remote_id ) );
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return NULL;
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}
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/* Extract fields */
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request->qp->av.qpn = ( ntohl ( connect_rep->local_qpn ) >> 8 );
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request->qp->send.psn = ( ntohl ( connect_rep->starting_psn ) >> 8 );
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DBGC ( gma, "GMA %p QPN %lx connected to QPN %lx PSN %x\n", gma,
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request->qp->qpn, request->qp->av.qpn, request->qp->send.psn );
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/* Modify queue pair */
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if ( ( rc = ib_modify_qp ( request->qp->ibdev, request->qp ) ) != 0 ) {
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DBGC ( gma, "GMA %p QPN %lx could not modify queue pair: %s\n",
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gma, request->qp->qpn, strerror ( rc ) );
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return NULL;
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}
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/* Inform recipient that we are now connected */
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request->notify ( request->qp, 0, &connect_rep->private_data,
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sizeof ( connect_rep->private_data ) );
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/* Construct ready to use reply */
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mad->hdr.attr_id = htons ( IB_CM_ATTR_READY_TO_USE );
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memset ( ready, 0, sizeof ( *ready ) );
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ready->local_id = htonl ( request->local_id );
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ready->remote_id = htonl ( request->remote_id );
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return mad;
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}
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/**
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* Handle connection rejection
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*
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* @v gma General management agent
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* @v mad MAD
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* @ret response MAD response
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*/
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static union ib_mad * ib_cm_connect_reject ( struct ib_gma *gma,
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union ib_mad *mad ) {
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struct ib_cm_connect_reject *connect_rej =
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&mad->cm.cm_data.connect_reject;
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struct ib_cm_request *request;
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uint16_t reason;
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/* Identify request */
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request = ib_cm_find_request ( ntohl ( connect_rej->remote_id ),
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ntohl ( connect_rej->local_id ) );
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if ( ! request ) {
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DBGC ( gma, "GMA %p received connection rejection with "
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"unknown ID %08x\n", gma,
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ntohl ( connect_rej->remote_id ) );
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return NULL;
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}
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/* Extract fields */
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reason = ntohs ( connect_rej->reason );
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DBGC ( gma, "GMA %p QPN %lx connection rejected (reason %d)\n",
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gma, request->qp->qpn, reason );
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/* Inform recipient that we are now disconnected */
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request->notify ( request->qp, -ENOTCONN, &connect_rej->private_data,
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sizeof ( connect_rej->private_data ) );
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return NULL;
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}
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||||
|
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/** Communication management MAD handlers */
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struct ib_gma_handler ib_cm_handlers[] __ib_gma_handler = {
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{
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.mgmt_class = IB_MGMT_CLASS_CM,
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.class_version = IB_CM_CLASS_VERSION,
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.method = IB_MGMT_METHOD_SEND,
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.attr_id = htons ( IB_CM_ATTR_CONNECT_REPLY ),
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.handle = ib_cm_connect_reply,
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||||
},
|
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{
|
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.mgmt_class = IB_MGMT_CLASS_CM,
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||||
.class_version = IB_CM_CLASS_VERSION,
|
||||
.method = IB_MGMT_METHOD_SEND,
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||||
.attr_id = htons ( IB_CM_ATTR_CONNECT_REJECT ),
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.handle = ib_cm_connect_reject,
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},
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||||
/** Connection path operations */
|
||||
static struct ib_path_operations ib_cm_path_op = {
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||||
.complete = ib_cm_path_complete,
|
||||
};
|
||||
|
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/**
|
||||
* Connect to remote QP
|
||||
* Create connection to remote QP
|
||||
*
|
||||
* @v ibdev Infiniband device
|
||||
* @v qp Queue pair
|
||||
* @v dgid Target GID
|
||||
* @v service_id Target service ID
|
||||
* @v private_data Private data
|
||||
* @v private_data_len Length of private data
|
||||
* @ret rc Return status code
|
||||
* @v private_data Connection request private data
|
||||
* @v private_data_len Length of connection request private data
|
||||
* @v op Connection operations
|
||||
* @ret conn Connection
|
||||
*/
|
||||
int ib_cm_connect ( struct ib_queue_pair *qp, struct ib_gid *dgid,
|
||||
struct ib_gid_half *service_id,
|
||||
void *private_data, size_t private_data_len,
|
||||
void ( * notify ) ( struct ib_queue_pair *qp, int rc,
|
||||
void *private_data,
|
||||
size_t private_data_len ) ) {
|
||||
struct ib_cm_request *request;
|
||||
struct ib_connection *
|
||||
ib_create_conn ( struct ib_device *ibdev, struct ib_queue_pair *qp,
|
||||
struct ib_gid *dgid, struct ib_gid_half *service_id,
|
||||
void *private_data, size_t private_data_len,
|
||||
struct ib_connection_operations *op ) {
|
||||
struct ib_connection *conn;
|
||||
|
||||
/* Allocate and initialise request */
|
||||
request = zalloc ( sizeof ( *request ) + private_data_len );
|
||||
if ( ! request )
|
||||
return -ENOMEM;
|
||||
list_add ( &request->list, &ib_cm_requests );
|
||||
request->local_id = random();
|
||||
request->qp = qp;
|
||||
conn = zalloc ( sizeof ( *conn ) + private_data_len );
|
||||
if ( ! conn )
|
||||
goto err_alloc_conn;
|
||||
conn->ibdev = ibdev;
|
||||
conn->qp = qp;
|
||||
memset ( &qp->av, 0, sizeof ( qp->av ) );
|
||||
qp->av.gid_present = 1;
|
||||
memcpy ( &qp->av.gid, dgid, sizeof ( qp->av.gid ) );
|
||||
memcpy ( &request->service_id, service_id,
|
||||
sizeof ( request->service_id ) );
|
||||
request->notify = notify;
|
||||
request->private_data_len = private_data_len;
|
||||
memcpy ( &request->private_data, private_data, private_data_len );
|
||||
process_init ( &request->process, ib_cm_step, NULL );
|
||||
conn->local_id = random();
|
||||
memcpy ( &conn->service_id, service_id, sizeof ( conn->service_id ) );
|
||||
conn->op = op;
|
||||
conn->private_data_len = private_data_len;
|
||||
memcpy ( &conn->private_data, private_data, private_data_len );
|
||||
|
||||
return 0;
|
||||
/* Create path */
|
||||
conn->path = ib_create_path ( ibdev, &qp->av, &ib_cm_path_op );
|
||||
if ( ! conn->path )
|
||||
goto err_create_path;
|
||||
ib_path_set_ownerdata ( conn->path, conn );
|
||||
|
||||
DBGC ( conn, "CM %p created for IBDEV %p QPN %lx\n",
|
||||
conn, ibdev, qp->qpn );
|
||||
DBGC ( conn, "CM %p connecting to %08x:%08x:%08x:%08x %08x:%08x\n",
|
||||
conn, ntohl ( dgid->u.dwords[0] ), ntohl ( dgid->u.dwords[1] ),
|
||||
ntohl ( dgid->u.dwords[2] ), ntohl ( dgid->u.dwords[3] ),
|
||||
ntohl ( service_id->u.dwords[0] ),
|
||||
ntohl ( service_id->u.dwords[1] ) );
|
||||
|
||||
return conn;
|
||||
|
||||
ib_destroy_path ( ibdev, conn->path );
|
||||
err_create_path:
|
||||
free ( conn );
|
||||
err_alloc_conn:
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* Destroy connection to remote QP
|
||||
*
|
||||
* @v ibdev Infiniband device
|
||||
* @v qp Queue pair
|
||||
* @v conn Connection
|
||||
*/
|
||||
void ib_destroy_conn ( struct ib_device *ibdev,
|
||||
struct ib_queue_pair *qp __unused,
|
||||
struct ib_connection *conn ) {
|
||||
|
||||
if ( conn->madx )
|
||||
ib_destroy_madx ( ibdev, ibdev->gsi, conn->madx );
|
||||
if ( conn->path )
|
||||
ib_destroy_path ( ibdev, conn->path );
|
||||
free ( conn );
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user