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-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/d3.c114
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c46
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c106
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/sta.h12
4 files changed, 245 insertions, 33 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index 6ac4072..2cd9052 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -137,6 +137,28 @@ static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
out[i] = cpu_to_le16(p1k[i]);
}
+static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
+ struct iwl_mvm_key_pn *ptk_pn,
+ struct ieee80211_key_seq *seq,
+ int tid, int queues)
+{
+ const u8 *ret = seq->ccmp.pn;
+ int i;
+
+ /* get the PN from mac80211, used on the default queue */
+ ieee80211_get_key_rx_seq(key, tid, seq);
+
+ /* and use the internal data for the other queues */
+ for (i = 1; i < queues; i++) {
+ const u8 *tmp = ptk_pn->q[i].pn[tid];
+
+ if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
+ ret = tmp;
+ }
+
+ return ret;
+}
+
struct wowlan_key_data {
struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
struct iwl_wowlan_tkip_params_cmd *tkip;
@@ -294,18 +316,42 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
/*
* For non-QoS this relies on the fact that both the uCode and
- * mac80211 use TID 0 for checking the IV in the frames.
+ * mac80211/our RX code use TID 0 for checking the PN.
*/
- for (i = 0; i < IWL_NUM_RSC; i++) {
- u8 *pn = seq.ccmp.pn;
+ if (sta && iwl_mvm_has_new_rx_api(mvm)) {
+ struct iwl_mvm_sta *mvmsta;
+ struct iwl_mvm_key_pn *ptk_pn;
+ const u8 *pn;
+
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ ptk_pn = rcu_dereference_protected(
+ mvmsta->ptk_pn[key->keyidx],
+ lockdep_is_held(&mvm->mutex));
+ if (WARN_ON(!ptk_pn))
+ break;
- ieee80211_get_key_rx_seq(key, i, &seq);
- aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
- ((u64)pn[4] << 8) |
- ((u64)pn[3] << 16) |
- ((u64)pn[2] << 24) |
- ((u64)pn[1] << 32) |
- ((u64)pn[0] << 40));
+ for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
+ pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
+ mvm->trans->num_rx_queues);
+ aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
+ ((u64)pn[4] << 8) |
+ ((u64)pn[3] << 16) |
+ ((u64)pn[2] << 24) |
+ ((u64)pn[1] << 32) |
+ ((u64)pn[0] << 40));
+ }
+ } else {
+ for (i = 0; i < IWL_NUM_RSC; i++) {
+ u8 *pn = seq.ccmp.pn;
+
+ ieee80211_get_key_rx_seq(key, i, &seq);
+ aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
+ ((u64)pn[4] << 8) |
+ ((u64)pn[3] << 16) |
+ ((u64)pn[2] << 24) |
+ ((u64)pn[1] << 32) |
+ ((u64)pn[0] << 40));
+ }
}
data->use_rsc_tsc = true;
break;
@@ -1426,18 +1472,42 @@ static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
seq->tkip.iv16 = le16_to_cpu(sc->iv16);
}
-static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs,
+static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
+ struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
int tid;
BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
- for (tid = 0; tid < IWL_NUM_RSC; tid++) {
- struct ieee80211_key_seq seq = {};
+ if (sta && iwl_mvm_has_new_rx_api(mvm)) {
+ struct iwl_mvm_sta *mvmsta;
+ struct iwl_mvm_key_pn *ptk_pn;
- iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
- ieee80211_set_key_rx_seq(key, tid, &seq);
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+ ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
+ lockdep_is_held(&mvm->mutex));
+ if (WARN_ON(!ptk_pn))
+ return;
+
+ for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
+ struct ieee80211_key_seq seq = {};
+ int i;
+
+ iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
+ ieee80211_set_key_rx_seq(key, tid, &seq);
+ for (i = 1; i < mvm->trans->num_rx_queues; i++)
+ memcpy(ptk_pn->q[i].pn[tid],
+ seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
+ }
+ } else {
+ for (tid = 0; tid < IWL_NUM_RSC; tid++) {
+ struct ieee80211_key_seq seq = {};
+
+ iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
+ ieee80211_set_key_rx_seq(key, tid, &seq);
+ }
}
}
@@ -1456,14 +1526,15 @@ static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
}
}
-static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
+static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
+ struct ieee80211_key_conf *key,
struct iwl_wowlan_status *status)
{
union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
- iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key);
+ iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
break;
case WLAN_CIPHER_SUITE_TKIP:
iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
@@ -1474,6 +1545,7 @@ static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
}
struct iwl_mvm_d3_gtk_iter_data {
+ struct iwl_mvm *mvm;
struct iwl_wowlan_status *status;
void *last_gtk;
u32 cipher;
@@ -1522,7 +1594,8 @@ static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
- iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key);
+ iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
+ sta, key);
atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
break;
case WLAN_CIPHER_SUITE_TKIP:
@@ -1545,7 +1618,7 @@ static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
if (data->status->num_of_gtk_rekeys)
ieee80211_remove_key(key);
else if (data->last_gtk == key)
- iwl_mvm_set_key_rx_seq(key, data->status);
+ iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
}
static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
@@ -1554,6 +1627,7 @@ static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_d3_gtk_iter_data gtkdata = {
+ .mvm = mvm,
.status = status,
};
u32 disconnection_reasons =
@@ -1615,7 +1689,7 @@ static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
key = ieee80211_gtk_rekey_add(vif, &conf.conf);
if (IS_ERR(key))
return false;
- iwl_mvm_set_key_rx_seq(key, status);
+ iwl_mvm_set_key_rx_seq(mvm, key, status);
}
if (status->num_of_gtk_rekeys) {
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 40b5c53..d70a171 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -2568,6 +2568,9 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
struct ieee80211_key_conf *key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+ struct iwl_mvm_sta *mvmsta;
+ struct iwl_mvm_key_pn *ptk_pn;
+ int keyidx = key->keyidx;
int ret;
u8 key_offset;
@@ -2635,6 +2638,36 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
break;
}
+ if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
+ sta && iwl_mvm_has_new_rx_api(mvm) &&
+ key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
+ (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
+ key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
+ struct ieee80211_key_seq seq;
+ int tid, q;
+
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
+ ptk_pn = kzalloc(sizeof(*ptk_pn) +
+ mvm->trans->num_rx_queues *
+ sizeof(ptk_pn->q[0]),
+ GFP_KERNEL);
+ if (!ptk_pn) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
+ ieee80211_get_key_rx_seq(key, tid, &seq);
+ for (q = 0; q < mvm->trans->num_rx_queues; q++)
+ memcpy(ptk_pn->q[q].pn[tid],
+ seq.ccmp.pn,
+ IEEE80211_CCMP_PN_LEN);
+ }
+
+ rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
+ }
+
/* in HW restart reuse the index, otherwise request a new one */
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
key_offset = key->hw_key_idx;
@@ -2660,6 +2693,19 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
break;
}
+ if (sta && iwl_mvm_has_new_rx_api(mvm) &&
+ key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
+ (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
+ key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ ptk_pn = rcu_dereference_protected(
+ mvmsta->ptk_pn[keyidx],
+ lockdep_is_held(&mvm->mutex));
+ RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
+ if (ptk_pn)
+ kfree_rcu(ptk_pn, rcu_head);
+ }
+
IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
break;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index e2a872d..0c073e0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -78,12 +78,83 @@ void iwl_mvm_rx_phy_cmd_mq(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
#endif
}
-static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
- struct napi_struct *napi,
- struct sk_buff *skb,
- struct ieee80211_hdr *hdr, u16 len,
- u32 ampdu_status, u8 crypt_len,
- struct iwl_rx_cmd_buffer *rxb)
+static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
+ int queue, struct ieee80211_sta *sta)
+{
+ struct iwl_mvm_sta *mvmsta;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
+ struct iwl_mvm_key_pn *ptk_pn;
+ u8 tid, keyidx;
+ u8 pn[IEEE80211_CCMP_PN_LEN];
+ u8 *extiv;
+
+ /* do PN checking */
+
+ /* multicast and non-data only arrives on default queue */
+ if (!ieee80211_is_data(hdr->frame_control) ||
+ is_multicast_ether_addr(hdr->addr1))
+ return 0;
+
+ /* do not check PN for open AP */
+ if (!(stats->flag & RX_FLAG_DECRYPTED))
+ return 0;
+
+ /*
+ * avoid checking for default queue - we don't want to replicate
+ * all the logic that's necessary for checking the PN on fragmented
+ * frames, leave that to mac80211
+ */
+ if (queue == 0)
+ return 0;
+
+ /* if we are here - this for sure is either CCMP or GCMP */
+ if (IS_ERR_OR_NULL(sta)) {
+ IWL_ERR(mvm,
+ "expected hw-decrypted unicast frame for station\n");
+ return -1;
+ }
+
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+ extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
+ keyidx = extiv[3] >> 6;
+
+ ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
+ if (!ptk_pn)
+ return -1;
+
+ if (ieee80211_is_data_qos(hdr->frame_control))
+ tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ else
+ tid = 0;
+
+ /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
+ if (tid >= IWL_MAX_TID_COUNT)
+ return -1;
+
+ /* load pn */
+ pn[0] = extiv[7];
+ pn[1] = extiv[6];
+ pn[2] = extiv[5];
+ pn[3] = extiv[4];
+ pn[4] = extiv[1];
+ pn[5] = extiv[0];
+
+ if (memcmp(pn, ptk_pn->q[queue].pn[tid],
+ IEEE80211_CCMP_PN_LEN) <= 0)
+ return -1;
+
+ memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
+ stats->flag |= RX_FLAG_PN_VALIDATED;
+
+ return 0;
+}
+
+/* iwl_mvm_create_skb Adds the rxb to a new skb */
+static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr,
+ u16 len, u8 crypt_len,
+ struct iwl_rx_cmd_buffer *rxb)
{
unsigned int hdrlen, fraglen;
@@ -112,8 +183,18 @@ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
fraglen, rxb->truesize);
}
+}
- ieee80211_rx_napi(mvm->hw, skb, napi);
+/* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
+static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
+ struct napi_struct *napi,
+ struct sk_buff *skb, int queue,
+ struct ieee80211_sta *sta)
+{
+ if (iwl_mvm_check_pn(mvm, skb, queue, sta))
+ kfree_skb(skb);
+ else
+ ieee80211_rx_napi(mvm->hw, skb, napi);
}
static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
@@ -141,7 +222,7 @@ static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
rx_status->chain_signal[2] = energy_c;
}
-static u32 iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
+static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
struct ieee80211_rx_status *stats,
struct iwl_rx_mpdu_desc *desc, int queue,
u8 *crypt_len)
@@ -158,6 +239,7 @@ static u32 iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
case IWL_RX_MPDU_STATUS_SEC_CCM:
case IWL_RX_MPDU_STATUS_SEC_GCM:
+ BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
/* alg is CCM: check MIC only */
if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
return -1;
@@ -217,7 +299,6 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
u32 rate_n_flags = le32_to_cpu(desc->rate_n_flags);
struct ieee80211_sta *sta = NULL;
struct sk_buff *skb;
- u32 ampdu_status;
u8 crypt_len = 0;
/* Dont use dev_alloc_skb(), we'll have enough headroom once
@@ -311,8 +392,6 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
iwl_mvm_rx_csum(sta, skb, desc);
}
- rcu_read_unlock();
-
/*
* TODO: PHY info.
* Verify we don't have the information in the MPDU descriptor and
@@ -367,8 +446,9 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
/* TODO: PHY info - update ampdu queue statistics (for debugfs) */
/* TODO: PHY info - gscan */
- iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, hdr, len, ampdu_status,
- crypt_len, rxb);
+ iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb);
+ iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
+ rcu_read_unlock();
}
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
index badf17c..39fdf52 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
@@ -7,6 +7,7 @@
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * Copyright(c) 2015 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@@ -33,6 +34,7 @@
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * Copyright(c) 2015 Intel Deutschland GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -284,6 +286,13 @@ static inline u16 iwl_mvm_tid_queued(struct iwl_mvm_tid_data *tid_data)
tid_data->next_reclaimed);
}
+struct iwl_mvm_key_pn {
+ struct rcu_head rcu_head;
+ struct {
+ u8 pn[IWL_MAX_TID_COUNT][IEEE80211_CCMP_PN_LEN];
+ } ____cacheline_aligned_in_smp q[];
+};
+
/**
* struct iwl_mvm_sta - representation of a station in the driver
* @sta_id: the index of the station in the fw (will be replaced by id_n_color)
@@ -308,6 +317,7 @@ static inline u16 iwl_mvm_tid_queued(struct iwl_mvm_tid_data *tid_data)
* gets empty before all the frames were sent, which can happen when
* we are sending frames from an AMPDU queue and there was a hole in
* the BA window. To be used for UAPSD only.
+ * @ptk_pn: per-queue PTK PN data structures
*
* When mac80211 creates a station it reserves some space (hw->sta_data_size)
* in the structure for use by driver. This structure is placed in that
@@ -328,6 +338,8 @@ struct iwl_mvm_sta {
struct iwl_lq_sta lq_sta;
struct ieee80211_vif *vif;
+ struct iwl_mvm_key_pn __rcu *ptk_pn[4];
+
/* Temporary, until the new TLC will control the Tx protection */
s8 tx_protection;
bool tt_tx_protection;
generated by cgit v0.10.2 at 2024-11-16 14:22:09 (GMT)