1 files changed, 0 insertions, 296 deletions
diff --git a/gpxe/src/net/infiniband/ib_pathrec.c b/gpxe/src/net/infiniband/ib_pathrec.c
deleted file mode 100644
index 136e628d..00000000
--- a/gpxe/src/net/infiniband/ib_pathrec.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- * Copyright (C) 2009 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <byteswap.h>
-#include <errno.h>
-#include <gpxe/infiniband.h>
-#include <gpxe/ib_mi.h>
-#include <gpxe/ib_pathrec.h>
-
-/** @file
- *
- * Infiniband path lookups
- *
- */
-
-/**
- * Handle path transaction completion
- *
- * @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_path_complete ( struct ib_device *ibdev,
-			       struct ib_mad_interface *mi,
-			       struct ib_mad_transaction *madx,
-			       int rc, union ib_mad *mad,
-			       struct ib_address_vector *av __unused ) {
-	struct ib_path *path = ib_madx_get_ownerdata ( madx );
-	struct ib_gid *dgid = &path->av.gid;
-	struct ib_path_record *pathrec = &mad->sa.sa_data.path_record;
-
-	/* Report failures */
-	if ( ( rc == 0 ) && ( mad->hdr.status != htons ( IB_MGMT_STATUS_OK ) ))
-		rc = -ENETUNREACH;
-	if ( rc != 0 ) {
-		DBGC ( ibdev, "IBDEV %p path lookup for %08x:%08x:%08x:%08x "
-		       "failed: %s\n", ibdev, htonl ( dgid->u.dwords[0] ),
-		       htonl ( dgid->u.dwords[1] ),
-		       htonl ( dgid->u.dwords[2] ),
-		       htonl ( dgid->u.dwords[3] ), strerror ( rc ) );
-		goto out;
-	}
-
-	/* Extract values from MAD */
-	path->av.lid = ntohs ( pathrec->dlid );
-	path->av.sl = ( pathrec->reserved__sl & 0x0f );
-	path->av.rate = ( pathrec->rate_selector__rate & 0x3f );
-	DBGC ( ibdev, "IBDEV %p path to %08x:%08x:%08x:%08x is %04x sl %d "
-	       "rate %d\n", ibdev, htonl ( dgid->u.dwords[0] ),
-	       htonl ( dgid->u.dwords[1] ), htonl ( dgid->u.dwords[2] ),
-	       htonl ( dgid->u.dwords[3] ), path->av.lid, path->av.sl,
-	       path->av.rate );
-
- out:
-	/* Destroy the completed transaction */
-	ib_destroy_madx ( ibdev, mi, madx );
-	path->madx = NULL;
-
-	/* Hand off to upper completion handler */
-	path->op->complete ( ibdev, path, rc, &path->av );
-}
-
-/** Path transaction completion operations */
-static struct ib_mad_transaction_operations ib_path_op = {
-	.complete = ib_path_complete,
-};
-
-/**
- * Create path
- *
- * @v ibdev		Infiniband device
- * @v av		Address vector to complete
- * @v op		Path operations
- * @ret path		Path
- */
-struct ib_path *
-ib_create_path ( struct ib_device *ibdev, struct ib_address_vector *av,
-		 struct ib_path_operations *op ) {
-	struct ib_path *path;
-	union ib_mad mad;
-	struct ib_mad_sa *sa = &mad.sa;
-
-	/* Allocate and initialise structure */
-	path = zalloc ( sizeof ( *path ) );
-	if ( ! path )
-		goto err_alloc_path;
-	path->ibdev = ibdev;
-	memcpy ( &path->av, av, sizeof ( path->av ) );
-	path->op = op;
-
-	/* Construct path 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 = IB_MGMT_METHOD_GET;
-	sa->mad_hdr.attr_id = htons ( IB_SA_ATTR_PATH_REC );
-	sa->sa_hdr.comp_mask[1] =
-		htonl ( IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID );
-	memcpy ( &sa->sa_data.path_record.dgid, &path->av.gid,
-		 sizeof ( sa->sa_data.path_record.dgid ) );
-	memcpy ( &sa->sa_data.path_record.sgid, &ibdev->gid,
-		 sizeof ( sa->sa_data.path_record.sgid ) );
-
-	/* Create management transaction */
-	path->madx = ib_create_madx ( ibdev, ibdev->gsi, &mad, NULL,
-				      &ib_path_op );
-	if ( ! path->madx )
-		goto err_create_madx;
-	ib_madx_set_ownerdata ( path->madx, path );
-
-	return path;
-
-	ib_destroy_madx ( ibdev, ibdev->gsi, path->madx );
- err_create_madx:
-	free ( path );
- err_alloc_path:
-	return NULL;
-}
-
-/**
- * Destroy path
- *
- * @v ibdev		Infiniband device
- * @v path		Path
- */
-void ib_destroy_path ( struct ib_device *ibdev, struct ib_path *path ) {
-
-	if ( path->madx )
-		ib_destroy_madx ( ibdev, ibdev->gsi, path->madx );
-	free ( path );
-}
-
-/** Number of path cache entries
- *
- * Must be a power of two.
- */
-#define IB_NUM_CACHED_PATHS 4
-
-/** A cached path */
-struct ib_cached_path {
-	/** Path */
-	struct ib_path *path;
-};
-
-/** Path cache */
-static struct ib_cached_path ib_path_cache[IB_NUM_CACHED_PATHS];
-
-/** Oldest path cache entry index */
-static unsigned int ib_path_cache_idx;
-
-/**
- * Find path cache entry
- *
- * @v ibdev		Infiniband device
- * @v dgid		Destination GID
- * @ret path		Path cache entry, or NULL
- */
-static struct ib_cached_path *
-ib_find_path_cache_entry ( struct ib_device *ibdev, struct ib_gid *dgid ) {
-	struct ib_cached_path *cached;
-	unsigned int i;
-
-	for ( i = 0 ; i < IB_NUM_CACHED_PATHS ; i++ ) {
-		cached = &ib_path_cache[i];
-		if ( ! cached->path )
-			continue;
-		if ( cached->path->ibdev != ibdev )
-			continue;
-		if ( memcmp ( &cached->path->av.gid, dgid,
-			      sizeof ( cached->path->av.gid ) ) != 0 )
-			continue;
-		return cached;
-	}
-
-	return NULL;
-}
-
-/**
- * Handle cached path transaction completion
- *
- * @v ibdev		Infiniband device
- * @v path		Path
- * @v rc		Status code
- * @v av		Address vector, or NULL on error
- */
-static void ib_cached_path_complete ( struct ib_device *ibdev,
-				      struct ib_path *path, int rc,
-				      struct ib_address_vector *av __unused ) {
-	struct ib_cached_path *cached = ib_path_get_ownerdata ( path );
-
-	/* If the transaction failed, erase the cache entry */
-	if ( rc != 0 ) {
-		/* Destroy the old cache entry */
-		ib_destroy_path ( ibdev, path );
-		memset ( cached, 0, sizeof ( *cached ) );
-		return;
-	}
-
-	/* Do not destroy the completed transaction; we still need to
-	 * refer to the resolved path.
-	 */
-}
-
-/** Cached path transaction completion operations */
-static struct ib_path_operations ib_cached_path_op = {
-	.complete = ib_cached_path_complete,
-};
-
-/**
- * Resolve path
- *
- * @v ibdev		Infiniband device
- * @v av		Address vector to complete
- * @ret rc		Return status code
- *
- * This provides a non-transactional way to resolve a path, via a
- * cache similar to ARP.
- */
-int ib_resolve_path ( struct ib_device *ibdev, struct ib_address_vector *av ) {
-	struct ib_gid *gid = &av->gid;
-	struct ib_cached_path *cached;
-	unsigned int cache_idx;
-
-	/* Sanity check */
-	if ( ! av->gid_present ) {
-		DBGC ( ibdev, "IBDEV %p attempt to look up path "
-		       "without GID\n", ibdev );
-		return -EINVAL;
-	}
-
-	/* Look in cache for a matching entry */
-	cached = ib_find_path_cache_entry ( ibdev, gid );
-	if ( cached && cached->path->av.lid ) {
-		/* Populated entry found */
-		av->lid = cached->path->av.lid;
-		av->rate = cached->path->av.rate;
-		av->sl = cached->path->av.sl;
-		DBGC2 ( ibdev, "IBDEV %p cache hit for %08x:%08x:%08x:%08x\n",
-			ibdev, htonl ( gid->u.dwords[0] ),
-			htonl ( gid->u.dwords[1] ), htonl ( gid->u.dwords[2] ),
-			htonl ( gid->u.dwords[3] ) );
-		return 0;
-	}
-	DBGC ( ibdev, "IBDEV %p cache miss for %08x:%08x:%08x:%08x%s\n",
-	       ibdev, htonl ( gid->u.dwords[0] ), htonl ( gid->u.dwords[1] ),
-	       htonl ( gid->u.dwords[2] ), htonl ( gid->u.dwords[3] ),
-	       ( cached ? " (in progress)" : "" ) );
-
-	/* If lookup is already in progress, do nothing */
-	if ( cached )
-		return -ENOENT;
-
-	/* Locate a new cache entry to use */
-	cache_idx = ( (ib_path_cache_idx++) % IB_NUM_CACHED_PATHS );
-	cached = &ib_path_cache[cache_idx];
-
-	/* Destroy the old cache entry */
-	if ( cached->path )
-		ib_destroy_path ( ibdev, cached->path );
-	memset ( cached, 0, sizeof ( *cached ) );
-
-	/* Create new path */
-	cached->path = ib_create_path ( ibdev, av, &ib_cached_path_op );
-	if ( ! cached->path ) {
-		DBGC ( ibdev, "IBDEV %p could not create path\n",
-		       ibdev );
-		return -ENOMEM;
-	}
-	ib_path_set_ownerdata ( cached->path, cached );
-
-	/* Not found yet */
-	return -ENOENT;
-}