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hostapd: add radius WISPr rate control AVPs

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This allows a radius server to send AVPs for client rate control inside the
accept message. Further add the ratelimits to the sta-authorized ubus
notification.

Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin 2024-11-29 08:40:08 +01:00
parent 90d0065f51
commit 461d9dca89
2 changed files with 112 additions and 0 deletions
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105
package/network/services/hostapd/patches/763-radius-wispr.patch Normal file
View File

@ -0,0 +1,105 @@
--- a/src/ap/ieee802_1x.c
+++ b/src/ap/ieee802_1x.c
@@ -2035,6 +2035,25 @@ static int ieee802_1x_update_vlan(struct
}
#endif /* CONFIG_NO_VLAN */
+static int ieee802_1x_update_wispr(struct hostapd_data *hapd,
+ struct sta_info *sta,
+ struct radius_msg *msg)
+{
+ memset(sta->bandwidth, 0, sizeof(sta->bandwidth));
+
+ if (radius_msg_get_wispr(msg, sta->bandwidth))
+ return 0;
+
+ if (!sta->bandwidth[0] && !sta->bandwidth[1])
+ return 0;
+
+ hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
+ HOSTAPD_LEVEL_INFO,
+ "received wispr bandwidth from RADIUS server %d/%d",
+ sta->bandwidth[0], sta->bandwidth[1]);
+
+ return 0;
+}
/**
* ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
@@ -2151,6 +2170,7 @@ ieee802_1x_receive_auth(struct radius_ms
ieee802_1x_check_hs20(hapd, sta, msg,
session_timeout_set ?
(int) session_timeout : -1);
+ ieee802_1x_update_wispr(hapd, sta, msg);
break;
case RADIUS_CODE_ACCESS_REJECT:
sm->eap_if->aaaFail = true;
--- a/src/ap/sta_info.h
+++ b/src/ap/sta_info.h
@@ -95,6 +95,7 @@ struct sta_info {
u8 supported_rates[WLAN_SUPP_RATES_MAX];
int supported_rates_len;
u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
+ u32 bandwidth[2];
#ifdef CONFIG_MESH
enum mesh_plink_state plink_state;
--- a/src/radius/radius.c
+++ b/src/radius/radius.c
@@ -1339,6 +1339,35 @@ radius_msg_get_cisco_keys(struct radius_
return keys;
}
+#define RADIUS_VENDOR_ID_WISPR 14122
+#define RADIUS_WISPR_AV_BW_UP 7
+#define RADIUS_WISPR_AV_BW_DOWN 8
+
+int
+radius_msg_get_wispr(struct radius_msg *msg, u32 *bandwidth)
+{
+ int i;
+
+ if (msg == NULL || bandwidth == NULL)
+ return 1;
+
+ for (i = 0; i < 2; i++) {
+ size_t keylen;
+ u8 *key;
+
+ key = radius_msg_get_vendor_attr(msg, RADIUS_VENDOR_ID_WISPR,
+ RADIUS_WISPR_AV_BW_UP + i, &keylen);
+ if (!key)
+ continue;
+
+ if (keylen == 4)
+ bandwidth[i] = ntohl(*((u32 *)key));
+ os_free(key);
+ }
+
+ return 0;
+}
+
int radius_msg_add_mppe_keys(struct radius_msg *msg,
const u8 *req_authenticator,
--- a/src/radius/radius.h
+++ b/src/radius/radius.h
@@ -233,6 +233,10 @@ enum {
RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL = 10,
};
+#define RADIUS_VENDOR_ID_WISPR 14122
+#define RADIUS_WISPR_AV_BW_UP 7
+#define RADIUS_WISPR_AV_BW_DOWN 8
+
#ifdef _MSC_VER
#pragma pack(pop)
#endif /* _MSC_VER */
@@ -306,6 +310,7 @@ radius_msg_get_ms_keys(struct radius_msg
struct radius_ms_mppe_keys *
radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
const u8 *secret, size_t secret_len);
+int radius_msg_get_wispr(struct radius_msg *msg, u32 *bandwidth);
int radius_msg_add_mppe_keys(struct radius_msg *msg,
const u8 *req_authenticator,
const u8 *secret, size_t secret_len,

7
package/network/services/hostapd/src/src/ap/ubus.c
View File

@ -1876,6 +1876,13 @@ void hostapd_ubus_notify_authorized(struct hostapd_data *hapd, struct sta_info *
blobmsg_add_string(&b, "ifname", hapd->conf->iface);
if (auth_alg)
blobmsg_add_string(&b, "auth-alg", auth_alg);
if (sta->bandwidth[0] || sta->bandwidth[1]) {
void *r = blobmsg_open_array(&b, "rate-limit");
blobmsg_add_u32(&b, "", sta->bandwidth[0]);
blobmsg_add_u32(&b, "", sta->bandwidth[1]);
blobmsg_close_array(&b, r);
}
ubus_notify(ctx, &hapd->ubus.obj, "sta-authorized", b.head, -1);
}