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nl80211: vendor command support

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Add support for vendor-specific commands to nl80211. This is
intended to be used for really vendor-specific functionality
that can't be implemented in a generic fashion for any reason.
It's *NOT* intended to be used for any normal/generic feature
or any optimisations that could be implemented across drivers.

Currently, only vendor commands (with replies) are supported,
no dump operations or vendor-specific notifications.

Also add a function wdev_to_ieee80211_vif() to mac80211 which
is needed for mac80211-based drivers wanting to implement any
vendor commands.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2013-11-13 13:37:47 +01:00
parent 7869303b17
commit ad7e718c9b
6 changed files with 348 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
include/uapi/linux/nl80211.h
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@@ -693,6 +693,15 @@
* other station that transmission must be blocked until the channel
* switch is complete.
*
* @NL80211_CMD_VENDOR: Vendor-specified command/event. The command is specified
* by the %NL80211_ATTR_VENDOR_ID attribute and a sub-command in
* %NL80211_ATTR_VENDOR_SUBCMD. Parameter(s) can be transported in
* %NL80211_ATTR_VENDOR_DATA.
* For feature advertisement, the %NL80211_ATTR_VENDOR_DATA attribute is
* used in the wiphy data as a nested attribute containing descriptions
* (&struct nl80211_vendor_cmd_info) of the supported vendor commands.
* This may also be sent as an event with the same attributes.
*
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -860,6 +869,8 @@ enum nl80211_commands {
NL80211_CMD_CHANNEL_SWITCH,
NL80211_CMD_VENDOR,
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -1524,6 +1535,12 @@ enum nl80211_commands {
* Notification Element based on association request when used with
* %NL80211_CMD_NEW_STATION; u8 attribute.
*
* @NL80211_ATTR_VENDOR_ID: The vendor ID, either a 24-bit OUI or, if
* %NL80211_VENDOR_ID_IS_LINUX is set, a special Linux ID (not used yet)
* @NL80211_ATTR_VENDOR_SUBCMD: vendor sub-command
* @NL80211_ATTR_VENDOR_DATA: data for the vendor command, if any; this
* attribute is also used for vendor command feature advertisement
*
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -1845,6 +1862,10 @@ enum nl80211_attrs {
NL80211_ATTR_OPMODE_NOTIF,
NL80211_ATTR_VENDOR_ID,
NL80211_ATTR_VENDOR_SUBCMD,
NL80211_ATTR_VENDOR_DATA,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -3965,4 +3986,24 @@ enum nl80211_rxmgmt_flags {
NL80211_RXMGMT_FLAG_ANSWERED = 1 << 0,
};
/*
* If this flag is unset, the lower 24 bits are an OUI, if set
* a Linux nl80211 vendor ID is used (no such IDs are allocated
* yet, so that's not valid so far)
*/
#define NL80211_VENDOR_ID_IS_LINUX 0x80000000
/**
* struct nl80211_vendor_cmd_info - vendor command data
* @vendor_id: If the %NL80211_VENDOR_ID_IS_LINUX flag is clear, then the
* value is a 24-bit OUI; if it is set then a separately allocated ID
* may be used, but no such IDs are allocated yet. New IDs should be
* added to this file when needed.
* @subcmd: sub-command ID for the command
*/
struct nl80211_vendor_cmd_info {
__u32 vendor_id;
__u32 subcmd;
};
#endif /* __LINUX_NL80211_H */