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[PATCH] IPMI: per-channel command registration

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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>
This commit is contained in:
Corey Minyard 2006-09-30 23:27:56 -07:00 • committed by Linus Torvalds
parent 54f67f631d
commit c69c31270c
4 changed files with 139 additions and 29 deletions
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48
include/linux/ipmi.h
View file

@ -148,6 +148,13 @@ struct ipmi_lan_addr
#define IPMI_BMC_CHANNEL 0xf
#define IPMI_NUM_CHANNELS 0x10
/*
* Used to signify an "all channel" bitmask. This is more than the
* actual number of channels because this is used in userland and
* will cover us if the number of channels is extended.
*/
#define IPMI_CHAN_ALL (~0)
/*
* A raw IPMI message without any addressing. This covers both
@ -350,18 +357,21 @@ int ipmi_request_supply_msgs(ipmi_user_t user,
/*
* When commands come in to the SMS, the user can register to receive
* them. Only one user can be listening on a specific netfn/cmd pair
* them. Only one user can be listening on a specific netfn/cmd/chan tuple
* at a time, you will get an EBUSY error if the command is already
* registered. If a command is received that does not have a user
* registered, the driver will automatically return the proper
* error.
* error. Channels are specified as a bitfield, use IPMI_CHAN_ALL to
* mean all channels.
*/
int ipmi_register_for_cmd(ipmi_user_t user,
unsigned char netfn,
unsigned char cmd);
unsigned char cmd,
unsigned int chans);
int ipmi_unregister_for_cmd(ipmi_user_t user,
unsigned char netfn,
unsigned char cmd);
unsigned char cmd,
unsigned int chans);
/*
* Allow run-to-completion mode to be set for the interface of
@ -571,6 +581,36 @@ struct ipmi_cmdspec
#define IPMICTL_UNREGISTER_FOR_CMD _IOR(IPMI_IOC_MAGIC, 15, \
struct ipmi_cmdspec)
/*
* Register to get commands from other entities on specific channels.
* This way, you can only listen on specific channels, or have messages
* from some channels go to one place and other channels to someplace
* else. The chans field is a bitmask, (1 << channel) for each channel.
* It may be IPMI_CHAN_ALL for all channels.
*/
struct ipmi_cmdspec_chans
{
unsigned int netfn;
unsigned int cmd;
unsigned int chans;
};
/*
* Register to receive a specific command on specific channels. error values:
* - EFAULT - an address supplied was invalid.
* - EBUSY - One of the netfn/cmd/chans supplied was already in use.
* - ENOMEM - could not allocate memory for the entry.
*/
#define IPMICTL_REGISTER_FOR_CMD_CHANS _IOR(IPMI_IOC_MAGIC, 28, \
struct ipmi_cmdspec_chans)
/*
* Unregister some netfn/cmd/chans. error values:
* - EFAULT - an address supplied was invalid.
* - ENOENT - None of the netfn/cmd/chans were found registered for this user.
*/
#define IPMICTL_UNREGISTER_FOR_CMD_CHANS _IOR(IPMI_IOC_MAGIC, 29, \
struct ipmi_cmdspec_chans)
/*
* Set whether this interface receives events. Note that the first
* user registered for events will get all pending events for the