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nl80211: explicit userspace MPM

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Secure mesh had the implicit requirement that the Mesh
Peering Management entity be in userspace.  However
userspace might want to implement an open MPM as well, so
specify a mesh setup parameter to indicate this.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Thomas Pedersen 2013-03-04 13:06:10 -08:00 committed by Johannes Berg
parent 2ff2b690c5
commit bb2798d45f
4 changed files with 29 additions and 7 deletions
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2
include/net/cfg80211.h
View File

@ -1151,6 +1151,7 @@ struct mesh_config {
* @ie_len: length of vendor information elements
* @is_authenticated: this mesh requires authentication
* @is_secure: this mesh uses security
* @user_mpm: userspace handles all MPM functions
* @dtim_period: DTIM period to use
* @beacon_interval: beacon interval to use
* @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
@ -1168,6 +1169,7 @@ struct mesh_setup {
u8 ie_len;
bool is_authenticated;
bool is_secure;
bool user_mpm;
u8 dtim_period;
u16 beacon_interval;
int mcast_rate[IEEE80211_NUM_BANDS];

25
include/uapi/linux/nl80211.h
View File

@ -513,9 +513,11 @@
* @NL80211_CMD_NEW_PEER_CANDIDATE: Notification on the reception of a
* beacon or probe response from a compatible mesh peer. This is only
* sent while no station information (sta_info) exists for the new peer
* candidate and when @NL80211_MESH_SETUP_USERSPACE_AUTH is set. On
* reception of this notification, userspace may decide to create a new
* station (@NL80211_CMD_NEW_STATION). To stop this notification from
* candidate and when @NL80211_MESH_SETUP_USERSPACE_AUTH,
* @NL80211_MESH_SETUP_USERSPACE_AMPE, or
* @NL80211_MESH_SETUP_USERSPACE_MPM is set. On reception of this
* notification, userspace may decide to create a new station
* (@NL80211_CMD_NEW_STATION). To stop this notification from
* reoccurring, the userspace authentication daemon may want to create the
* new station with the AUTHENTICATED flag unset and maybe change it later
* depending on the authentication result.
@ -1199,10 +1201,10 @@ enum nl80211_commands {
* @NL80211_ATTR_SUPPORT_MESH_AUTH: Currently, this means the underlying driver
* allows auth frames in a mesh to be passed to userspace for processing via
* the @NL80211_MESH_SETUP_USERSPACE_AUTH flag.
* @NL80211_ATTR_STA_PLINK_STATE: The state of a mesh peer link as
* defined in &enum nl80211_plink_state. Used when userspace is
* driving the peer link management state machine.
* @NL80211_MESH_SETUP_USERSPACE_AMPE must be enabled.
* @NL80211_ATTR_STA_PLINK_STATE: The state of a mesh peer link as defined in
* &enum nl80211_plink_state. Used when userspace is driving the peer link
* management state machine. @NL80211_MESH_SETUP_USERSPACE_AMPE or
* @NL80211_MESH_SETUP_USERSPACE_MPM must be enabled.
*
* @NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED: indicates, as part of the wiphy
* capabilities, the supported WoWLAN triggers
@ -2612,6 +2614,9 @@ enum nl80211_meshconf_params {
* vendor specific synchronization method or disable it to use the default
* neighbor offset synchronization
*
* @NL80211_MESH_SETUP_USERSPACE_MPM: Enable this option if userspace will
* implement an MPM which handles peer allocation and state.
*
* @NL80211_MESH_SETUP_ATTR_MAX: highest possible mesh setup attribute number
*
* @__NL80211_MESH_SETUP_ATTR_AFTER_LAST: Internal use
@ -2624,6 +2629,7 @@ enum nl80211_mesh_setup_params {
NL80211_MESH_SETUP_USERSPACE_AUTH,
NL80211_MESH_SETUP_USERSPACE_AMPE,
NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC,
NL80211_MESH_SETUP_USERSPACE_MPM,
/* keep last */
__NL80211_MESH_SETUP_ATTR_AFTER_LAST,
@ -3526,6 +3532,10 @@ enum nl80211_ap_sme_features {
* stations the authenticated/associated bits have to be set in the mask.
* @NL80211_FEATURE_ADVERTISE_CHAN_LIMITS: cfg80211 advertises channel limits
* (HT40, VHT 80/160 MHz) if this flag is set
* @NL80211_FEATURE_USERSPACE_MPM: This driver supports a userspace Mesh
* Peering Management entity which may be implemented by registering for
* beacons or NL80211_CMD_NEW_PEER_CANDIDATE events. The mesh beacon is
* still generated by the driver.
*/
enum nl80211_feature_flags {
NL80211_FEATURE_SK_TX_STATUS = 1 << 0,
@ -3544,6 +3554,7 @@ enum nl80211_feature_flags {
/* bit 13 is reserved */
NL80211_FEATURE_ADVERTISE_CHAN_LIMITS = 1 << 14,
NL80211_FEATURE_FULL_AP_CLIENT_STATE = 1 << 15,
NL80211_FEATURE_USERSPACE_MPM = 1 << 16,
};
/**

1
net/wireless/mesh.c
View File

@ -85,6 +85,7 @@ const struct mesh_setup default_mesh_setup = {
.ie = NULL,
.ie_len = 0,
.is_secure = false,
.user_mpm = false,
.beacon_interval = MESH_DEFAULT_BEACON_INTERVAL,
.dtim_period = MESH_DEFAULT_DTIM_PERIOD,
};

8
net/wireless/nl80211.c
View File

@ -4618,6 +4618,7 @@ static const struct nla_policy
[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
[NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
[NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
@ -4756,6 +4757,7 @@ do { \
static int nl80211_parse_mesh_setup(struct genl_info *info,
struct mesh_setup *setup)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
if (!info->attrs[NL80211_ATTR_MESH_SETUP])
@ -4792,8 +4794,14 @@ static int nl80211_parse_mesh_setup(struct genl_info *info,
setup->ie = nla_data(ieattr);
setup->ie_len = nla_len(ieattr);
}
if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
!(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
return -EINVAL;
setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
if (setup->is_secure)
setup->user_mpm = true;
return 0;
}