summaryrefslogtreecommitdiff
path: root/usr/src/lib/sun_fc/common/HBAPort.cc
diff options
context:
space:
mode:
Diffstat (limited to 'usr/src/lib/sun_fc/common/HBAPort.cc')
-rw-r--r--usr/src/lib/sun_fc/common/HBAPort.cc304
1 files changed, 304 insertions, 0 deletions
diff --git a/usr/src/lib/sun_fc/common/HBAPort.cc b/usr/src/lib/sun_fc/common/HBAPort.cc
new file mode 100644
index 0000000000..29fbb10641
--- /dev/null
+++ b/usr/src/lib/sun_fc/common/HBAPort.cc
@@ -0,0 +1,304 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+
+
+#include "HBAPort.h"
+#include "Exceptions.h"
+#include "Trace.h"
+#include <iostream>
+#include <iomanip>
+#include <cerrno>
+#include <cstring>
+#include <sys/types.h>
+#include <sys/mkdev.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stropts.h>
+#include <dirent.h>
+#include <libdevinfo.h>
+
+using namespace std;
+
+/**
+ * Standard definition for general topology lookup (See T11 FC-FS)
+ */
+const int HBAPort::RNID_GENERAL_TOPOLOGY_DATA_FORMAT = 0xDF;
+const uint8_t HBAPort::HBA_NPIV_PORT_MAX = UCHAR_MAX;
+
+/**
+ * @memo Construct a new deafult HBA Port
+ */
+HBAPort::HBAPort() {
+}
+
+/**
+ * @memo Compare two HBA ports for equality
+ * @return TRUE if both ports are the same
+ * @return FALSE if the ports are different
+ *
+ * @doc Comparison is based on Node WWN, Port WWN and path
+ */
+bool HBAPort::operator==(HBAPort &comp) {
+ return (this->getPortWWN() == comp.getPortWWN() &&
+ this->getNodeWWN() == comp.getNodeWWN() &&
+ this->getPath() == comp.getPath());
+}
+
+/**
+ * @memo Validate that the port is still present in the system
+ * @exception UnavailableException if the port is not present
+ *
+ * @doc If the port is still present on the system, the routine
+ * will return normally. If the port is not present
+ * an exception will be thrown.
+ */
+void HBAPort::validatePresent() {
+ Trace log("HBAPort::validatePresent");
+ string path = getPath();
+ struct stat sbuf;
+ if (stat(path.c_str(), &sbuf) == -1) {
+ if (errno == ENOENT) {
+ throw UnavailableException();
+ } else {
+ log.debug("Unable to stat %s: %s", path.c_str(),
+ strerror(errno));
+ throw InternalError();
+ }
+ }
+}
+
+
+/*
+ * structure for di_devlink_walk
+ */
+typedef struct walk_devlink {
+ char *path;
+ size_t len;
+ char **linkpp;
+} walk_devlink_t;
+
+/**
+ * @memo callback funtion for di_devlink_walk
+ * @postcondition Find matching /dev link for the given path argument.
+ * @param devlink element and callback function argument.
+ *
+ * @doc The input path is expected to not have "/devices".
+ */
+extern "C" int
+get_devlink(di_devlink_t devlink, void *arg) {
+ Trace log("get_devlink");
+ walk_devlink_t *warg = (walk_devlink_t *)arg;
+
+ /*
+ * When path is specified, it doesn't have minor
+ * name. Therefore, the ../.. prefixes needs to be stripped.
+ */
+ if (warg->path) {
+ // di_devlink_content contains /devices
+ char *content = (char *)di_devlink_content(devlink);
+ char *start = strstr(content, "/devices");
+
+ if (start == NULL ||
+ strncmp(start, warg->path, warg->len) != 0 ||
+ // make it sure the device path has minor name
+ start[warg->len] != ':')
+ return (DI_WALK_CONTINUE);
+ }
+
+ *(warg->linkpp) = strdup(di_devlink_path(devlink));
+ return (DI_WALK_TERMINATE);
+}
+
+/**
+ * @memo Convert /devices paths to /dev sym-link paths.
+ * @postcondition The mapping buffer OSDeviceName paths will be
+ * converted to short names.
+ * @param mappings The target mappings data to convert to
+ * short names
+ *
+ * @doc If no link
+ * is found, the long path is left as is.
+ * Note: The NumberOfEntries field MUST not be greater than the size
+ * of the array passed in.
+ */
+void HBAPort::convertToShortNames(PHBA_FCPTARGETMAPPINGV2 mappings) {
+ Trace log("HBAPort::convertToShortNames");
+ di_devlink_handle_t hdl;
+ walk_devlink_t warg;
+ char *minor_path, *devlinkp;
+
+ if ((hdl = di_devlink_init(NULL, 0)) == NULL) {
+ log.internalError("di_devlink_init failed. Errno:%d", errno);
+ // no need to check further, just return here.
+ return;
+ }
+
+ for (int j = 0; j < mappings->NumberOfEntries; j++) {
+ if (strchr(mappings->entry[j].ScsiId.OSDeviceName, ':')) {
+ // search link for minor node
+ minor_path = mappings->entry[j].ScsiId.OSDeviceName;
+ if (strstr(minor_path, "/devices") != NULL) {
+ minor_path = mappings->entry[j].ScsiId.OSDeviceName +
+ strlen("/devices");
+ } else {
+ minor_path = mappings->entry[j].ScsiId.OSDeviceName;
+ }
+ warg.path = NULL;
+ } else {
+ minor_path = NULL;
+ if (strstr(mappings->entry[j].ScsiId.OSDeviceName,
+ "/devices") != NULL) {
+ warg.len = strlen (mappings->entry[j].ScsiId.OSDeviceName) -
+ strlen ("/devices");
+ warg.path = mappings->entry[j].ScsiId.OSDeviceName +
+ strlen ("/devices");
+ } else {
+ warg.len = strlen(mappings->entry[j].ScsiId.OSDeviceName);
+ warg.path = mappings->entry[j].ScsiId.OSDeviceName;
+ }
+ }
+
+ devlinkp = NULL;
+ warg.linkpp = &devlinkp;
+ (void) di_devlink_walk(hdl, NULL, minor_path, DI_PRIMARY_LINK,
+ (void *)&warg, get_devlink);
+
+ if (devlinkp != NULL) {
+ snprintf(mappings->entry[j].ScsiId.OSDeviceName,
+ sizeof (mappings->entry[j].ScsiId.OSDeviceName),
+ "%s", devlinkp);
+ free(devlinkp);
+ } // else leave OSDeviceName alone.
+
+ }
+
+ di_devlink_fini(&hdl);
+
+}
+
+/*
+ * Finds controller path for a give device path.
+ *
+ * Return vale: controller path.
+ */
+string HBAPort::lookupControllerPath(string path) {
+ Trace log("lookupControllerPath");
+ DIR *dp;
+ char buf[MAXPATHLEN];
+ char node[MAXPATHLEN];
+ struct dirent **dirpp, *dirp;
+ const char dir[] = "/dev/cfg";
+ ssize_t count;
+ uchar_t *dir_buf = new uchar_t[sizeof (struct dirent) + MAXPATHLEN];
+
+ if ((dp = opendir(dir)) == NULL) {
+ string tmp = "Unable to open ";
+ tmp += dir;
+ tmp += "to find controller number.";
+ delete (dir_buf);
+ throw IOError(tmp);
+ }
+
+ dirp = (struct dirent *) dir_buf;
+ dirpp = &dirp;
+ while ((readdir_r(dp, dirp, dirpp)) == 0 && dirp != NULL) {
+ if (strcmp(dirp->d_name, ".") == 0 ||
+ strcmp(dirp->d_name, "..") == 0) {
+ continue;
+ }
+ sprintf(node, "%s/%s", dir, dirp->d_name);
+ if ((count = readlink(node,buf,sizeof(buf)))) {
+ buf[count] = '\0';
+ if (strstr(buf, path.c_str())) {
+ string cfg_path = dir;
+ cfg_path += "/";
+ cfg_path += dirp->d_name;
+ closedir(dp);
+ delete (dir_buf);
+ return (cfg_path);
+ }
+ }
+ }
+
+ closedir(dp);
+ delete (dir_buf);
+ throw InternalError("Unable to find controller path");
+}
+
+void HBAPort::addPort(HBANPIVPort *port) {
+ Trace log("HBAPort::addPort");
+ lock();
+ // support hba with up to UCHAR_MAX number of ports.
+ if (npivportsByIndex.size() + 1 > HBA_NPIV_PORT_MAX) {
+ unlock();
+ throw InternalError("HBA NPIV Port count exceeds max number of ports");
+ }
+
+ try {
+ npivportsByWWN[port->getPortWWN()] = port;
+ npivportsByIndex.insert(npivportsByIndex.end(), port);
+ unlock();
+ } catch (...) {
+ unlock();
+ throw;
+ }
+}
+
+HBANPIVPort* HBAPort::getPort(uint64_t wwn) {
+ Trace log("HBAPort::getPort");
+ HBANPIVPort *port = NULL;
+
+ lock();
+ try {
+ if (npivportsByWWN.find(wwn) == npivportsByWWN.end()) {
+ throw IllegalWWNException();
+ }
+ port = npivportsByWWN[wwn];
+ unlock();
+ return (port);
+ } catch (...) {
+ unlock();
+ throw;
+ }
+}
+
+HBANPIVPort* HBAPort::getPortByIndex(int index) {
+ Trace log("HBAPort::getPortByIndex");
+ lock();
+ try {
+ if (index >= npivportsByIndex.size() || index < 0) {
+ throw IllegalIndexException();
+ }
+ HBANPIVPort *tmp = npivportsByIndex[index];
+ unlock();
+ return (tmp);
+ } catch (...) {
+ unlock();
+ throw;
+ }
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-26 18:16:23 +0000