[PATCH] IPMI: per-channel command registration

This patch adds the ability to register for a command per-channel in the
IPMI driver.

If your BMC supports multiple channels, incoming messages can be useful to
have the ability to register to receive commands on a specific channel
instead the current behaviour of all channels.

Signed-off-by: David Barksdale <amatus@ocgnet.org>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 32 insertions, 2 deletions

diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c
index 68d7c61a864e..81fcf0ce21d1 100644
--- a/drivers/char/ipmi/ipmi_devintf.c
+++ b/drivers/char/ipmi/ipmi_devintf.c
@@ -377,7 +377,8 @@ static int ipmi_ioctl(struct inode  *inode,
                         break;
                 }
 
-                rv = ipmi_register_for_cmd(priv->user, val.netfn, val.cmd);
+                rv = ipmi_register_for_cmd(priv->user, val.netfn, val.cmd,
+                                           IPMI_CHAN_ALL);
                 break;
         }
 
@@ -390,7 +391,36 @@ static int ipmi_ioctl(struct inode  *inode,
                         break;
                 }
 
-                rv = ipmi_unregister_for_cmd(priv->user, val.netfn, val.cmd);
+                rv = ipmi_unregister_for_cmd(priv->user, val.netfn, val.cmd,
+                                             IPMI_CHAN_ALL);
+                break;
+        }
+
+        case IPMICTL_REGISTER_FOR_CMD_CHANS:
+        {
+                struct ipmi_cmdspec_chans val;
+
+                if (copy_from_user(&val, arg, sizeof(val))) {
+                        rv = -EFAULT;
+                        break;
+                }
+
+                rv = ipmi_register_for_cmd(priv->user, val.netfn, val.cmd,
+                                           val.chans);
+                break;
+        }
+
+        case IPMICTL_UNREGISTER_FOR_CMD_CHANS:
+        {
+                struct ipmi_cmdspec_chans val;
+
+                if (copy_from_user(&val, arg, sizeof(val))) {
+                        rv = -EFAULT;
+                        break;
+                }
+
+                rv = ipmi_unregister_for_cmd(priv->user, val.netfn, val.cmd,
+                                             val.chans);
                 break;
         }