1 files changed, 151 insertions, 26 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_fs.c b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
index 38b150f775e7..685258e34034 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_fs.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
@@ -43,6 +43,18 @@ struct file_operations;
 
 static struct dentry *ipoib_root;
 
+static void format_gid(union ib_gid *gid, char *buf)
+{
+        int i, n;
+
+        for (n = 0, i = 0; i < 8; ++i) {
+                n += sprintf(buf + n, "%x",
+                             be16_to_cpu(((__be16 *) gid->raw)[i]));
+                if (i < 7)
+                        buf[n++] = ':';
+        }
+}
+
 static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos)
 {
         struct ipoib_mcast_iter *iter;
@@ -54,7 +66,7 @@ static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos)
 
         while (n--) {
                 if (ipoib_mcast_iter_next(iter)) {
-                        ipoib_mcast_iter_free(iter);
+                        kfree(iter);
                         return NULL;
                 }
         }
@@ -70,7 +82,7 @@ static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr,
         (*pos)++;
 
         if (ipoib_mcast_iter_next(iter)) {
-                ipoib_mcast_iter_free(iter);
+                kfree(iter);
                 return NULL;
         }
 
@@ -87,32 +99,32 @@ static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr)
         struct ipoib_mcast_iter *iter = iter_ptr;
         char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
         union ib_gid mgid;
-        int i, n;
         unsigned long created;
         unsigned int queuelen, complete, send_only;
 
-        if (iter) {
-                ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen,
-                                      &complete, &send_only);
+        if (!iter)
+                return 0;
 
-                for (n = 0, i = 0; i < sizeof mgid / 2; ++i) {
-                        n += sprintf(gid_buf + n, "%x",
-                                     be16_to_cpu(((__be16 *) mgid.raw)[i]));
-                        if (i < sizeof mgid / 2 - 1)
-                                gid_buf[n++] = ':';
-                }
-        }
+        ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen,
+                              &complete, &send_only);
 
-        seq_printf(file, "GID: %*s", -(1 + (int) sizeof gid_buf), gid_buf);
+        format_gid(&mgid, gid_buf);
 
         seq_printf(file,
-                   " created: %10ld queuelen: %4d complete: %d send_only: %d\n",
-                   created, queuelen, complete, send_only);
+                   "GID: %s\n"
+                   "  created: %10ld\n"
+                   "  queuelen: %9d\n"
+                   "  complete: %9s\n"
+                   "  send_only: %8s\n"
+                   "\n",
+                   gid_buf, created, queuelen,
+                   complete ? "yes" : "no",
+                   send_only ? "yes" : "no");
 
         return 0;
 }
 
-static struct seq_operations ipoib_seq_ops = {
+static struct seq_operations ipoib_mcg_seq_ops = {
         .start = ipoib_mcg_seq_start,
         .next  = ipoib_mcg_seq_next,
         .stop  = ipoib_mcg_seq_stop,
@@ -124,7 +136,7 @@ static int ipoib_mcg_open(struct inode *inode, struct file *file)
         struct seq_file *seq;
         int ret;
 
-        ret = seq_open(file, &ipoib_seq_ops);
+        ret = seq_open(file, &ipoib_mcg_seq_ops);
         if (ret)
                 return ret;
 
@@ -134,7 +146,7 @@ static int ipoib_mcg_open(struct inode *inode, struct file *file)
         return 0;
 }
 
-static struct file_operations ipoib_fops = {
+static struct file_operations ipoib_mcg_fops = {
         .owner   = THIS_MODULE,
         .open    = ipoib_mcg_open,
         .read    = seq_read,
@@ -142,25 +154,138 @@ static struct file_operations ipoib_fops = {
         .release = seq_release
 };
 
-int ipoib_create_debug_file(struct net_device *dev)
+static void *ipoib_path_seq_start(struct seq_file *file, loff_t *pos)
+{
+        struct ipoib_path_iter *iter;
+        loff_t n = *pos;
+
+        iter = ipoib_path_iter_init(file->private);
+        if (!iter)
+                return NULL;
+
+        while (n--) {
+                if (ipoib_path_iter_next(iter)) {
+                        kfree(iter);
+                        return NULL;
+                }
+        }
+
+        return iter;
+}
+
+static void *ipoib_path_seq_next(struct seq_file *file, void *iter_ptr,
+                                   loff_t *pos)
+{
+        struct ipoib_path_iter *iter = iter_ptr;
+
+        (*pos)++;
+
+        if (ipoib_path_iter_next(iter)) {
+                kfree(iter);
+                return NULL;
+        }
+
+        return iter;
+}
+
+static void ipoib_path_seq_stop(struct seq_file *file, void *iter_ptr)
+{
+        /* nothing for now */
+}
+
+static int ipoib_path_seq_show(struct seq_file *file, void *iter_ptr)
+{
+        struct ipoib_path_iter *iter = iter_ptr;
+        char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
+        struct ipoib_path path;
+        int rate;
+
+        if (!iter)
+                return 0;
+
+        ipoib_path_iter_read(iter, &path);
+
+        format_gid(&path.pathrec.dgid, gid_buf);
+
+        seq_printf(file,
+                   "GID: %s\n"
+                   "  complete: %6s\n",
+                   gid_buf, path.pathrec.dlid ? "yes" : "no");
+
+        if (path.pathrec.dlid) {
+                rate = ib_sa_rate_enum_to_int(path.pathrec.rate) * 25;
+
+                seq_printf(file,
+                           "  DLID:     0x%04x\n"
+                           "  SL: %12d\n"
+                           "  rate: %*d%s Gb/sec\n",
+                           be16_to_cpu(path.pathrec.dlid),
+                           path.pathrec.sl,
+                           10 - ((rate % 10) ? 2 : 0),
+                           rate / 10, rate % 10 ? ".5" : "");
+        }
+
+        seq_putc(file, '\n');
+
+        return 0;
+}
+
+static struct seq_operations ipoib_path_seq_ops = {
+        .start = ipoib_path_seq_start,
+        .next  = ipoib_path_seq_next,
+        .stop  = ipoib_path_seq_stop,
+        .show  = ipoib_path_seq_show,
+};
+
+static int ipoib_path_open(struct inode *inode, struct file *file)
+{
+        struct seq_file *seq;
+        int ret;
+
+        ret = seq_open(file, &ipoib_path_seq_ops);
+        if (ret)
+                return ret;
+
+        seq = file->private_data;
+        seq->private = inode->u.generic_ip;
+
+        return 0;
+}
+
+static struct file_operations ipoib_path_fops = {
+        .owner   = THIS_MODULE,
+        .open    = ipoib_path_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = seq_release
+};
+
+void ipoib_create_debug_files(struct net_device *dev)
 {
         struct ipoib_dev_priv *priv = netdev_priv(dev);
-        char name[IFNAMSIZ + sizeof "_mcg"];
+        char name[IFNAMSIZ + sizeof "_path"];
 
         snprintf(name, sizeof name, "%s_mcg", dev->name);
-
         priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
-                                               ipoib_root, dev, &ipoib_fops);
-
-        return priv->mcg_dentry ? 0 : -ENOMEM;
+                                               ipoib_root, dev, &ipoib_mcg_fops);
+        if (!priv->mcg_dentry)
+                ipoib_warn(priv, "failed to create mcg debug file\n");
+
+        snprintf(name, sizeof name, "%s_path", dev->name);
+        priv->path_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
+                                                ipoib_root, dev, &ipoib_path_fops);
+        if (!priv->path_dentry)
+                ipoib_warn(priv, "failed to create path debug file\n");
 }
 
-void ipoib_delete_debug_file(struct net_device *dev)
+void ipoib_delete_debug_files(struct net_device *dev)
 {
         struct ipoib_dev_priv *priv = netdev_priv(dev);
 
         if (priv->mcg_dentry)
                 debugfs_remove(priv->mcg_dentry);
+        if (priv->path_dentry)
+                debugfs_remove(priv->path_dentry);
 }
 
 int ipoib_register_debugfs(void)