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qtnfmac: handle MIC failure event from firmware 

Report MIC failure from firmware to cfg80211 subsystem
using dedicated callback cfg80211_michael_mic_failure.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Sergey Matyukevich 2019-11-13 11:06:57 +00:00 committed by Kalle Valo
parent 46d55fcec1
commit 239ce8a797
2 changed files with 55 additions and 0 deletions
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40
drivers/net/wireless/quantenna/qtnfmac/event.c
View File

@ -618,6 +618,42 @@ qtnf_event_handle_external_auth(struct qtnf_vif *vif,
return ret;
}
static int
qtnf_event_handle_mic_failure(struct qtnf_vif *vif,
const struct qlink_event_mic_failure *mic_ev,
u16 len)
{
struct wiphy *wiphy = priv_to_wiphy(vif->mac);
u8 pairwise;
if (len < sizeof(*mic_ev)) {
pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
vif->mac->macid, vif->vifid, len,
sizeof(struct qlink_event_mic_failure));
return -EINVAL;
}
if (!wiphy->registered || !vif->netdev)
return 0;
if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
pr_err("VIF%u.%u: MIC_FAILURE event when not in STA mode\n",
vif->mac->macid, vif->vifid);
return -EPROTO;
}
pairwise = mic_ev->pairwise ?
NL80211_KEYTYPE_PAIRWISE : NL80211_KEYTYPE_GROUP;
pr_info("%s: MIC error: src=%pM key_index=%u pairwise=%u\n",
vif->netdev->name, mic_ev->src, mic_ev->key_index, pairwise);
cfg80211_michael_mic_failure(vif->netdev, mic_ev->src, pairwise,
mic_ev->key_index, NULL, GFP_KERNEL);
return 0;
}
static int qtnf_event_parse(struct qtnf_wmac *mac,
const struct sk_buff *event_skb)
{
@ -680,6 +716,10 @@ static int qtnf_event_parse(struct qtnf_wmac *mac,
ret = qtnf_event_handle_external_auth(vif, (const void *)event,
event_len);
break;
case QLINK_EVENT_MIC_FAILURE:
ret = qtnf_event_handle_mic_failure(vif, (const void *)event,
event_len);
break;
default:
pr_warn("unknown event type: %x\n", event_id);
break;

15
drivers/net/wireless/quantenna/qtnfmac/qlink.h
View File

@ -958,6 +958,7 @@ enum qlink_event_type {
QLINK_EVENT_FREQ_CHANGE = 0x0028,
QLINK_EVENT_RADAR = 0x0029,
QLINK_EVENT_EXTERNAL_AUTH = 0x0030,
QLINK_EVENT_MIC_FAILURE = 0x0031,
};
/**
@ -1151,6 +1152,20 @@ struct qlink_event_external_auth {
u8 action;
} __packed;
/**
* struct qlink_event_mic_failure - data for QLINK_EVENT_MIC_FAILURE event
*
* @src: source MAC address of the frame
* @key_index: index of the key being reported
* @pairwise: whether the key is pairwise or group
*/
struct qlink_event_mic_failure {
struct qlink_event ehdr;
u8 src[ETH_ALEN];
u8 key_index;
u8 pairwise;
} __packed;
/* QLINK TLVs (Type-Length Values) definitions
*/