1117 lines
34 KiB
C
1117 lines
34 KiB
C
/******************************************************************************
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
|
|
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
|
|
* Copyright(c) 2015 - 2017 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
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* The full GNU General Public License is included in this distribution
|
|
* in the file called COPYING.
|
|
*
|
|
* Contact Information:
|
|
* Intel Linux Wireless <ilw@linux.intel.com>
|
|
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
|
|
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
|
|
* Copyright(c) 2015 - 2017 Intel Deutschland GmbH
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*****************************************************************************/
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include "iwl-trans.h"
|
|
#include "mvm.h"
|
|
#include "fw-api.h"
|
|
|
|
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;
|
|
|
|
if (!(stats->flag & RX_FLAG_AMSDU_MORE))
|
|
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)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
|
|
unsigned int headlen, fraglen, pad_len = 0;
|
|
unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
|
|
|
if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
|
|
pad_len = 2;
|
|
|
|
/*
|
|
* If the device inserted padding it means that (it thought)
|
|
* the 802.11 header wasn't a multiple of 4 bytes long. In
|
|
* this case, reserve two bytes at the start of the SKB to
|
|
* align the payload properly in case we end up copying it.
|
|
*/
|
|
skb_reserve(skb, pad_len);
|
|
}
|
|
len -= pad_len;
|
|
|
|
/* If frame is small enough to fit in skb->head, pull it completely.
|
|
* If not, only pull ieee80211_hdr (including crypto if present, and
|
|
* an additional 8 bytes for SNAP/ethertype, see below) so that
|
|
* splice() or TCP coalesce are more efficient.
|
|
*
|
|
* Since, in addition, ieee80211_data_to_8023() always pull in at
|
|
* least 8 bytes (possibly more for mesh) we can do the same here
|
|
* to save the cost of doing it later. That still doesn't pull in
|
|
* the actual IP header since the typical case has a SNAP header.
|
|
* If the latter changes (there are efforts in the standards group
|
|
* to do so) we should revisit this and ieee80211_data_to_8023().
|
|
*/
|
|
headlen = (len <= skb_tailroom(skb)) ? len :
|
|
hdrlen + crypt_len + 8;
|
|
|
|
/* The firmware may align the packet to DWORD.
|
|
* The padding is inserted after the IV.
|
|
* After copying the header + IV skip the padding if
|
|
* present before copying packet data.
|
|
*/
|
|
hdrlen += crypt_len;
|
|
skb_put_data(skb, hdr, hdrlen);
|
|
skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
|
|
|
|
fraglen = len - headlen;
|
|
|
|
if (fraglen) {
|
|
int offset = (void *)hdr + headlen + pad_len -
|
|
rxb_addr(rxb) + rxb_offset(rxb);
|
|
|
|
skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
|
|
fraglen, rxb->truesize);
|
|
}
|
|
}
|
|
|
|
/* 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, sta, skb, napi);
|
|
}
|
|
|
|
static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
|
|
struct iwl_rx_mpdu_desc *desc,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
int energy_a, energy_b, max_energy;
|
|
u32 rate_flags = le32_to_cpu(desc->rate_n_flags);
|
|
|
|
energy_a = desc->energy_a;
|
|
energy_a = energy_a ? -energy_a : S8_MIN;
|
|
energy_b = desc->energy_b;
|
|
energy_b = energy_b ? -energy_b : S8_MIN;
|
|
max_energy = max(energy_a, energy_b);
|
|
|
|
IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
|
|
energy_a, energy_b, max_energy);
|
|
|
|
rx_status->signal = max_energy;
|
|
rx_status->chains =
|
|
(rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
|
|
rx_status->chain_signal[0] = energy_a;
|
|
rx_status->chain_signal[1] = energy_b;
|
|
rx_status->chain_signal[2] = S8_MIN;
|
|
}
|
|
|
|
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, u32 pkt_flags,
|
|
int queue, u8 *crypt_len)
|
|
{
|
|
u16 status = le16_to_cpu(desc->status);
|
|
|
|
if (!ieee80211_has_protected(hdr->frame_control) ||
|
|
(status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
|
|
IWL_RX_MPDU_STATUS_SEC_NONE)
|
|
return 0;
|
|
|
|
/* TODO: handle packets encrypted with unknown alg */
|
|
|
|
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;
|
|
|
|
stats->flag |= RX_FLAG_DECRYPTED;
|
|
if (pkt_flags & FH_RSCSR_RADA_EN)
|
|
stats->flag |= RX_FLAG_MIC_STRIPPED;
|
|
*crypt_len = IEEE80211_CCMP_HDR_LEN;
|
|
return 0;
|
|
case IWL_RX_MPDU_STATUS_SEC_TKIP:
|
|
/* Don't drop the frame and decrypt it in SW */
|
|
if (!(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
|
|
return 0;
|
|
|
|
*crypt_len = IEEE80211_TKIP_IV_LEN;
|
|
/* fall through if TTAK OK */
|
|
case IWL_RX_MPDU_STATUS_SEC_WEP:
|
|
if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
|
|
return -1;
|
|
|
|
stats->flag |= RX_FLAG_DECRYPTED;
|
|
if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
|
|
IWL_RX_MPDU_STATUS_SEC_WEP)
|
|
*crypt_len = IEEE80211_WEP_IV_LEN;
|
|
|
|
if (pkt_flags & FH_RSCSR_RADA_EN)
|
|
stats->flag |= RX_FLAG_ICV_STRIPPED;
|
|
|
|
return 0;
|
|
case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
|
|
if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
|
|
return -1;
|
|
stats->flag |= RX_FLAG_DECRYPTED;
|
|
return 0;
|
|
default:
|
|
/* Expected in monitor (not having the keys) */
|
|
if (!mvm->monitor_on)
|
|
IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
|
|
struct sk_buff *skb,
|
|
struct iwl_rx_mpdu_desc *desc)
|
|
{
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
|
|
u16 flags = le16_to_cpu(desc->l3l4_flags);
|
|
u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
|
|
IWL_RX_L3_PROTO_POS);
|
|
|
|
if (mvmvif->features & NETIF_F_RXCSUM &&
|
|
flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
|
|
(flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
|
|
l3_prot == IWL_RX_L3_TYPE_IPV6 ||
|
|
l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
}
|
|
|
|
/*
|
|
* returns true if a packet outside BA session is a duplicate and
|
|
* should be dropped
|
|
*/
|
|
static bool iwl_mvm_is_nonagg_dup(struct ieee80211_sta *sta, int queue,
|
|
struct ieee80211_rx_status *rx_status,
|
|
struct ieee80211_hdr *hdr,
|
|
struct iwl_rx_mpdu_desc *desc)
|
|
{
|
|
struct iwl_mvm_sta *mvm_sta;
|
|
struct iwl_mvm_rxq_dup_data *dup_data;
|
|
u8 baid, tid, sub_frame_idx;
|
|
|
|
if (WARN_ON(IS_ERR_OR_NULL(sta)))
|
|
return false;
|
|
|
|
baid = (le32_to_cpu(desc->reorder_data) &
|
|
IWL_RX_MPDU_REORDER_BAID_MASK) >>
|
|
IWL_RX_MPDU_REORDER_BAID_SHIFT;
|
|
|
|
if (baid != IWL_RX_REORDER_DATA_INVALID_BAID)
|
|
return false;
|
|
|
|
mvm_sta = iwl_mvm_sta_from_mac80211(sta);
|
|
dup_data = &mvm_sta->dup_data[queue];
|
|
|
|
/*
|
|
* Drop duplicate 802.11 retransmissions
|
|
* (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
|
|
*/
|
|
if (ieee80211_is_ctl(hdr->frame_control) ||
|
|
ieee80211_is_qos_nullfunc(hdr->frame_control) ||
|
|
is_multicast_ether_addr(hdr->addr1)) {
|
|
rx_status->flag |= RX_FLAG_DUP_VALIDATED;
|
|
return false;
|
|
}
|
|
|
|
if (ieee80211_is_data_qos(hdr->frame_control))
|
|
/* frame has qos control */
|
|
tid = *ieee80211_get_qos_ctl(hdr) &
|
|
IEEE80211_QOS_CTL_TID_MASK;
|
|
else
|
|
tid = IWL_MAX_TID_COUNT;
|
|
|
|
/* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
|
|
sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
|
|
|
|
if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
|
|
dup_data->last_seq[tid] == hdr->seq_ctrl &&
|
|
dup_data->last_sub_frame[tid] >= sub_frame_idx))
|
|
return true;
|
|
|
|
dup_data->last_seq[tid] = hdr->seq_ctrl;
|
|
dup_data->last_sub_frame[tid] = sub_frame_idx;
|
|
|
|
rx_status->flag |= RX_FLAG_DUP_VALIDATED;
|
|
|
|
return false;
|
|
}
|
|
|
|
int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
|
|
const u8 *data, u32 count)
|
|
{
|
|
struct iwl_rxq_sync_cmd *cmd;
|
|
u32 data_size = sizeof(*cmd) + count;
|
|
int ret;
|
|
|
|
/* should be DWORD aligned */
|
|
if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE))
|
|
return -EINVAL;
|
|
|
|
cmd = kzalloc(data_size, GFP_KERNEL);
|
|
if (!cmd)
|
|
return -ENOMEM;
|
|
|
|
cmd->rxq_mask = cpu_to_le32(rxq_mask);
|
|
cmd->count = cpu_to_le32(count);
|
|
cmd->flags = 0;
|
|
memcpy(cmd->payload, data, count);
|
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm,
|
|
WIDE_ID(DATA_PATH_GROUP,
|
|
TRIGGER_RX_QUEUES_NOTIF_CMD),
|
|
0, data_size, cmd);
|
|
|
|
kfree(cmd);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Returns true if sn2 - buffer_size < sn1 < sn2.
|
|
* To be used only in order to compare reorder buffer head with NSSN.
|
|
* We fully trust NSSN unless it is behind us due to reorder timeout.
|
|
* Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
|
|
*/
|
|
static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
|
|
{
|
|
return ieee80211_sn_less(sn1, sn2) &&
|
|
!ieee80211_sn_less(sn1, sn2 - buffer_size);
|
|
}
|
|
|
|
#define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)
|
|
|
|
static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
|
|
struct ieee80211_sta *sta,
|
|
struct napi_struct *napi,
|
|
struct iwl_mvm_baid_data *baid_data,
|
|
struct iwl_mvm_reorder_buffer *reorder_buf,
|
|
u16 nssn)
|
|
{
|
|
struct iwl_mvm_reorder_buf_entry *entries =
|
|
&baid_data->entries[reorder_buf->queue *
|
|
baid_data->entries_per_queue];
|
|
u16 ssn = reorder_buf->head_sn;
|
|
|
|
lockdep_assert_held(&reorder_buf->lock);
|
|
|
|
/* ignore nssn smaller than head sn - this can happen due to timeout */
|
|
if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
|
|
goto set_timer;
|
|
|
|
while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
|
|
int index = ssn % reorder_buf->buf_size;
|
|
struct sk_buff_head *skb_list = &entries[index].e.frames;
|
|
struct sk_buff *skb;
|
|
|
|
ssn = ieee80211_sn_inc(ssn);
|
|
|
|
/*
|
|
* Empty the list. Will have more than one frame for A-MSDU.
|
|
* Empty list is valid as well since nssn indicates frames were
|
|
* received.
|
|
*/
|
|
while ((skb = __skb_dequeue(skb_list))) {
|
|
iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
|
|
reorder_buf->queue,
|
|
sta);
|
|
reorder_buf->num_stored--;
|
|
}
|
|
}
|
|
reorder_buf->head_sn = nssn;
|
|
|
|
set_timer:
|
|
if (reorder_buf->num_stored && !reorder_buf->removed) {
|
|
u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
|
|
|
|
while (skb_queue_empty(&entries[index].e.frames))
|
|
index = (index + 1) % reorder_buf->buf_size;
|
|
/* modify timer to match next frame's expiration time */
|
|
mod_timer(&reorder_buf->reorder_timer,
|
|
entries[index].e.reorder_time + 1 +
|
|
RX_REORDER_BUF_TIMEOUT_MQ);
|
|
} else {
|
|
del_timer(&reorder_buf->reorder_timer);
|
|
}
|
|
}
|
|
|
|
void iwl_mvm_reorder_timer_expired(struct timer_list *t)
|
|
{
|
|
struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
|
|
struct iwl_mvm_baid_data *baid_data =
|
|
iwl_mvm_baid_data_from_reorder_buf(buf);
|
|
struct iwl_mvm_reorder_buf_entry *entries =
|
|
&baid_data->entries[buf->queue * baid_data->entries_per_queue];
|
|
int i;
|
|
u16 sn = 0, index = 0;
|
|
bool expired = false;
|
|
bool cont = false;
|
|
|
|
spin_lock(&buf->lock);
|
|
|
|
if (!buf->num_stored || buf->removed) {
|
|
spin_unlock(&buf->lock);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < buf->buf_size ; i++) {
|
|
index = (buf->head_sn + i) % buf->buf_size;
|
|
|
|
if (skb_queue_empty(&entries[index].e.frames)) {
|
|
/*
|
|
* If there is a hole and the next frame didn't expire
|
|
* we want to break and not advance SN
|
|
*/
|
|
cont = false;
|
|
continue;
|
|
}
|
|
if (!cont &&
|
|
!time_after(jiffies, entries[index].e.reorder_time +
|
|
RX_REORDER_BUF_TIMEOUT_MQ))
|
|
break;
|
|
|
|
expired = true;
|
|
/* continue until next hole after this expired frames */
|
|
cont = true;
|
|
sn = ieee80211_sn_add(buf->head_sn, i + 1);
|
|
}
|
|
|
|
if (expired) {
|
|
struct ieee80211_sta *sta;
|
|
struct iwl_mvm_sta *mvmsta;
|
|
u8 sta_id = baid_data->sta_id;
|
|
|
|
rcu_read_lock();
|
|
sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
|
|
mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
|
|
/* SN is set to the last expired frame + 1 */
|
|
IWL_DEBUG_HT(buf->mvm,
|
|
"Releasing expired frames for sta %u, sn %d\n",
|
|
sta_id, sn);
|
|
iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
|
|
sta, baid_data->tid);
|
|
iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, buf, sn);
|
|
rcu_read_unlock();
|
|
} else {
|
|
/*
|
|
* If no frame expired and there are stored frames, index is now
|
|
* pointing to the first unexpired frame - modify timer
|
|
* accordingly to this frame.
|
|
*/
|
|
mod_timer(&buf->reorder_timer,
|
|
entries[index].e.reorder_time +
|
|
1 + RX_REORDER_BUF_TIMEOUT_MQ);
|
|
}
|
|
spin_unlock(&buf->lock);
|
|
}
|
|
|
|
static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
|
|
struct iwl_mvm_delba_data *data)
|
|
{
|
|
struct iwl_mvm_baid_data *ba_data;
|
|
struct ieee80211_sta *sta;
|
|
struct iwl_mvm_reorder_buffer *reorder_buf;
|
|
u8 baid = data->baid;
|
|
|
|
if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
|
|
return;
|
|
|
|
rcu_read_lock();
|
|
|
|
ba_data = rcu_dereference(mvm->baid_map[baid]);
|
|
if (WARN_ON_ONCE(!ba_data))
|
|
goto out;
|
|
|
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
|
|
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
|
|
goto out;
|
|
|
|
reorder_buf = &ba_data->reorder_buf[queue];
|
|
|
|
/* release all frames that are in the reorder buffer to the stack */
|
|
spin_lock_bh(&reorder_buf->lock);
|
|
iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
|
|
ieee80211_sn_add(reorder_buf->head_sn,
|
|
reorder_buf->buf_size));
|
|
spin_unlock_bh(&reorder_buf->lock);
|
|
del_timer_sync(&reorder_buf->reorder_timer);
|
|
|
|
out:
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
|
|
int queue)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
struct iwl_rxq_sync_notification *notif;
|
|
struct iwl_mvm_internal_rxq_notif *internal_notif;
|
|
|
|
notif = (void *)pkt->data;
|
|
internal_notif = (void *)notif->payload;
|
|
|
|
if (internal_notif->sync) {
|
|
if (mvm->queue_sync_cookie != internal_notif->cookie) {
|
|
WARN_ONCE(1,
|
|
"Received expired RX queue sync message\n");
|
|
return;
|
|
}
|
|
if (!atomic_dec_return(&mvm->queue_sync_counter))
|
|
wake_up(&mvm->rx_sync_waitq);
|
|
}
|
|
|
|
switch (internal_notif->type) {
|
|
case IWL_MVM_RXQ_EMPTY:
|
|
break;
|
|
case IWL_MVM_RXQ_NOTIF_DEL_BA:
|
|
iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
|
|
break;
|
|
default:
|
|
WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Returns true if the MPDU was buffered\dropped, false if it should be passed
|
|
* to upper layer.
|
|
*/
|
|
static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
|
|
struct napi_struct *napi,
|
|
int queue,
|
|
struct ieee80211_sta *sta,
|
|
struct sk_buff *skb,
|
|
struct iwl_rx_mpdu_desc *desc)
|
|
{
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
|
struct iwl_mvm_sta *mvm_sta;
|
|
struct iwl_mvm_baid_data *baid_data;
|
|
struct iwl_mvm_reorder_buffer *buffer;
|
|
struct sk_buff *tail;
|
|
u32 reorder = le32_to_cpu(desc->reorder_data);
|
|
bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
|
|
bool last_subframe =
|
|
desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
|
|
u8 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
|
|
u8 sub_frame_idx = desc->amsdu_info &
|
|
IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
|
|
struct iwl_mvm_reorder_buf_entry *entries;
|
|
int index;
|
|
u16 nssn, sn;
|
|
u8 baid;
|
|
|
|
baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
|
|
IWL_RX_MPDU_REORDER_BAID_SHIFT;
|
|
|
|
/*
|
|
* This also covers the case of receiving a Block Ack Request
|
|
* outside a BA session; we'll pass it to mac80211 and that
|
|
* then sends a delBA action frame.
|
|
*/
|
|
if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
|
|
return false;
|
|
|
|
/* no sta yet */
|
|
if (WARN_ONCE(IS_ERR_OR_NULL(sta),
|
|
"Got valid BAID without a valid station assigned\n"))
|
|
return false;
|
|
|
|
mvm_sta = iwl_mvm_sta_from_mac80211(sta);
|
|
|
|
/* not a data packet or a bar */
|
|
if (!ieee80211_is_back_req(hdr->frame_control) &&
|
|
(!ieee80211_is_data_qos(hdr->frame_control) ||
|
|
is_multicast_ether_addr(hdr->addr1)))
|
|
return false;
|
|
|
|
if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
|
|
return false;
|
|
|
|
baid_data = rcu_dereference(mvm->baid_map[baid]);
|
|
if (!baid_data) {
|
|
IWL_DEBUG_RX(mvm,
|
|
"Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
|
|
baid, reorder);
|
|
return false;
|
|
}
|
|
|
|
if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
|
|
"baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
|
|
baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
|
|
tid))
|
|
return false;
|
|
|
|
nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
|
|
sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
|
|
IWL_RX_MPDU_REORDER_SN_SHIFT;
|
|
|
|
buffer = &baid_data->reorder_buf[queue];
|
|
entries = &baid_data->entries[queue * baid_data->entries_per_queue];
|
|
|
|
spin_lock_bh(&buffer->lock);
|
|
|
|
if (!buffer->valid) {
|
|
if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
|
|
spin_unlock_bh(&buffer->lock);
|
|
return false;
|
|
}
|
|
buffer->valid = true;
|
|
}
|
|
|
|
if (ieee80211_is_back_req(hdr->frame_control)) {
|
|
iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
|
|
goto drop;
|
|
}
|
|
|
|
/*
|
|
* If there was a significant jump in the nssn - adjust.
|
|
* If the SN is smaller than the NSSN it might need to first go into
|
|
* the reorder buffer, in which case we just release up to it and the
|
|
* rest of the function will take care of storing it and releasing up to
|
|
* the nssn
|
|
*/
|
|
if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
|
|
buffer->buf_size) ||
|
|
!ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
|
|
u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
|
|
|
|
iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
|
|
min_sn);
|
|
}
|
|
|
|
/* drop any oudated packets */
|
|
if (ieee80211_sn_less(sn, buffer->head_sn))
|
|
goto drop;
|
|
|
|
/* release immediately if allowed by nssn and no stored frames */
|
|
if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
|
|
if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
|
|
buffer->buf_size) &&
|
|
(!amsdu || last_subframe))
|
|
buffer->head_sn = nssn;
|
|
/* No need to update AMSDU last SN - we are moving the head */
|
|
spin_unlock_bh(&buffer->lock);
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* release immediately if there are no stored frames, and the sn is
|
|
* equal to the head.
|
|
* This can happen due to reorder timer, where NSSN is behind head_sn.
|
|
* When we released everything, and we got the next frame in the
|
|
* sequence, according to the NSSN we can't release immediately,
|
|
* while technically there is no hole and we can move forward.
|
|
*/
|
|
if (!buffer->num_stored && sn == buffer->head_sn) {
|
|
if (!amsdu || last_subframe)
|
|
buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
|
|
/* No need to update AMSDU last SN - we are moving the head */
|
|
spin_unlock_bh(&buffer->lock);
|
|
return false;
|
|
}
|
|
|
|
index = sn % buffer->buf_size;
|
|
|
|
/*
|
|
* Check if we already stored this frame
|
|
* As AMSDU is either received or not as whole, logic is simple:
|
|
* If we have frames in that position in the buffer and the last frame
|
|
* originated from AMSDU had a different SN then it is a retransmission.
|
|
* If it is the same SN then if the subframe index is incrementing it
|
|
* is the same AMSDU - otherwise it is a retransmission.
|
|
*/
|
|
tail = skb_peek_tail(&entries[index].e.frames);
|
|
if (tail && !amsdu)
|
|
goto drop;
|
|
else if (tail && (sn != buffer->last_amsdu ||
|
|
buffer->last_sub_index >= sub_frame_idx))
|
|
goto drop;
|
|
|
|
/* put in reorder buffer */
|
|
__skb_queue_tail(&entries[index].e.frames, skb);
|
|
buffer->num_stored++;
|
|
entries[index].e.reorder_time = jiffies;
|
|
|
|
if (amsdu) {
|
|
buffer->last_amsdu = sn;
|
|
buffer->last_sub_index = sub_frame_idx;
|
|
}
|
|
|
|
/*
|
|
* We cannot trust NSSN for AMSDU sub-frames that are not the last.
|
|
* The reason is that NSSN advances on the first sub-frame, and may
|
|
* cause the reorder buffer to advance before all the sub-frames arrive.
|
|
* Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
|
|
* SN 1. NSSN for first sub frame will be 3 with the result of driver
|
|
* releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
|
|
* already ahead and it will be dropped.
|
|
* If the last sub-frame is not on this queue - we will get frame
|
|
* release notification with up to date NSSN.
|
|
*/
|
|
if (!amsdu || last_subframe)
|
|
iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
|
|
|
|
spin_unlock_bh(&buffer->lock);
|
|
return true;
|
|
|
|
drop:
|
|
kfree_skb(skb);
|
|
spin_unlock_bh(&buffer->lock);
|
|
return true;
|
|
}
|
|
|
|
static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
|
|
u32 reorder_data, u8 baid)
|
|
{
|
|
unsigned long now = jiffies;
|
|
unsigned long timeout;
|
|
struct iwl_mvm_baid_data *data;
|
|
|
|
rcu_read_lock();
|
|
|
|
data = rcu_dereference(mvm->baid_map[baid]);
|
|
if (!data) {
|
|
IWL_DEBUG_RX(mvm,
|
|
"Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
|
|
baid, reorder_data);
|
|
goto out;
|
|
}
|
|
|
|
if (!data->timeout)
|
|
goto out;
|
|
|
|
timeout = data->timeout;
|
|
/*
|
|
* Do not update last rx all the time to avoid cache bouncing
|
|
* between the rx queues.
|
|
* Update it every timeout. Worst case is the session will
|
|
* expire after ~ 2 * timeout, which doesn't matter that much.
|
|
*/
|
|
if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
|
|
/* Update is atomic */
|
|
data->last_rx = now;
|
|
|
|
out:
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
|
|
struct iwl_rx_cmd_buffer *rxb, int queue)
|
|
{
|
|
struct ieee80211_rx_status *rx_status;
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
|
|
struct ieee80211_hdr *hdr = (void *)(pkt->data + sizeof(*desc));
|
|
u32 len = le16_to_cpu(desc->mpdu_len);
|
|
u32 rate_n_flags = le32_to_cpu(desc->rate_n_flags);
|
|
u16 phy_info = le16_to_cpu(desc->phy_info);
|
|
struct ieee80211_sta *sta = NULL;
|
|
struct sk_buff *skb;
|
|
u8 crypt_len = 0;
|
|
|
|
if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
|
|
return;
|
|
|
|
/* Dont use dev_alloc_skb(), we'll have enough headroom once
|
|
* ieee80211_hdr pulled.
|
|
*/
|
|
skb = alloc_skb(128, GFP_ATOMIC);
|
|
if (!skb) {
|
|
IWL_ERR(mvm, "alloc_skb failed\n");
|
|
return;
|
|
}
|
|
|
|
rx_status = IEEE80211_SKB_RXCB(skb);
|
|
|
|
if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, desc,
|
|
le32_to_cpu(pkt->len_n_flags), queue,
|
|
&crypt_len)) {
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Keep packets with CRC errors (and with overrun) for monitor mode
|
|
* (otherwise the firmware discards them) but mark them as bad.
|
|
*/
|
|
if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
|
|
!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
|
|
IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
|
|
le16_to_cpu(desc->status));
|
|
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
|
|
}
|
|
/* set the preamble flag if appropriate */
|
|
if (phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
|
|
rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
|
|
|
|
if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
|
|
rx_status->mactime = le64_to_cpu(desc->tsf_on_air_rise);
|
|
/* TSF as indicated by the firmware is at INA time */
|
|
rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
|
|
}
|
|
rx_status->device_timestamp = le32_to_cpu(desc->gp2_on_air_rise);
|
|
rx_status->band = desc->channel > 14 ? NL80211_BAND_5GHZ :
|
|
NL80211_BAND_2GHZ;
|
|
rx_status->freq = ieee80211_channel_to_frequency(desc->channel,
|
|
rx_status->band);
|
|
iwl_mvm_get_signal_strength(mvm, desc, rx_status);
|
|
|
|
/* update aggregation data for monitor sake on default queue */
|
|
if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
|
|
bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
|
|
|
|
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
|
|
rx_status->ampdu_reference = mvm->ampdu_ref;
|
|
/* toggle is switched whenever new aggregation starts */
|
|
if (toggle_bit != mvm->ampdu_toggle) {
|
|
mvm->ampdu_ref++;
|
|
mvm->ampdu_toggle = toggle_bit;
|
|
}
|
|
}
|
|
|
|
rcu_read_lock();
|
|
|
|
if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
|
|
u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
|
|
|
|
if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
|
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
|
|
if (IS_ERR(sta))
|
|
sta = NULL;
|
|
}
|
|
} else if (!is_multicast_ether_addr(hdr->addr2)) {
|
|
/*
|
|
* This is fine since we prevent two stations with the same
|
|
* address from being added.
|
|
*/
|
|
sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
|
|
}
|
|
|
|
if (sta) {
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct ieee80211_vif *tx_blocked_vif =
|
|
rcu_dereference(mvm->csa_tx_blocked_vif);
|
|
u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
|
|
IWL_RX_MPDU_REORDER_BAID_MASK) >>
|
|
IWL_RX_MPDU_REORDER_BAID_SHIFT);
|
|
|
|
/*
|
|
* We have tx blocked stations (with CS bit). If we heard
|
|
* frames from a blocked station on a new channel we can
|
|
* TX to it again.
|
|
*/
|
|
if (unlikely(tx_blocked_vif) &&
|
|
tx_blocked_vif == mvmsta->vif) {
|
|
struct iwl_mvm_vif *mvmvif =
|
|
iwl_mvm_vif_from_mac80211(tx_blocked_vif);
|
|
|
|
if (mvmvif->csa_target_freq == rx_status->freq)
|
|
iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
|
|
false);
|
|
}
|
|
|
|
rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status);
|
|
|
|
if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) &&
|
|
ieee80211_is_beacon(hdr->frame_control)) {
|
|
struct iwl_fw_dbg_trigger_tlv *trig;
|
|
struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
|
|
bool trig_check;
|
|
s32 rssi;
|
|
|
|
trig = iwl_fw_dbg_get_trigger(mvm->fw,
|
|
FW_DBG_TRIGGER_RSSI);
|
|
rssi_trig = (void *)trig->data;
|
|
rssi = le32_to_cpu(rssi_trig->rssi);
|
|
|
|
trig_check =
|
|
iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
|
|
ieee80211_vif_to_wdev(mvmsta->vif),
|
|
trig);
|
|
if (trig_check && rx_status->signal < rssi)
|
|
iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
|
|
NULL);
|
|
}
|
|
|
|
if (ieee80211_is_data(hdr->frame_control))
|
|
iwl_mvm_rx_csum(sta, skb, desc);
|
|
|
|
if (iwl_mvm_is_nonagg_dup(sta, queue, rx_status, hdr, desc)) {
|
|
kfree_skb(skb);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Our hardware de-aggregates AMSDUs but copies the mac header
|
|
* as it to the de-aggregated MPDUs. We need to turn off the
|
|
* AMSDU bit in the QoS control ourselves.
|
|
* In addition, HW reverses addr3 and addr4 - reverse it back.
|
|
*/
|
|
if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
|
|
!WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
|
|
int i;
|
|
u8 *qc = ieee80211_get_qos_ctl(hdr);
|
|
u8 mac_addr[ETH_ALEN];
|
|
|
|
*qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
|
|
|
|
for (i = 0; i < ETH_ALEN; i++)
|
|
mac_addr[i] = hdr->addr3[ETH_ALEN - i - 1];
|
|
ether_addr_copy(hdr->addr3, mac_addr);
|
|
|
|
if (ieee80211_has_a4(hdr->frame_control)) {
|
|
for (i = 0; i < ETH_ALEN; i++)
|
|
mac_addr[i] =
|
|
hdr->addr4[ETH_ALEN - i - 1];
|
|
ether_addr_copy(hdr->addr4, mac_addr);
|
|
}
|
|
}
|
|
if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
|
|
u32 reorder_data = le32_to_cpu(desc->reorder_data);
|
|
|
|
iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
|
|
}
|
|
}
|
|
|
|
/* Set up the HT phy flags */
|
|
switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
|
|
case RATE_MCS_CHAN_WIDTH_20:
|
|
break;
|
|
case RATE_MCS_CHAN_WIDTH_40:
|
|
rx_status->bw = RATE_INFO_BW_40;
|
|
break;
|
|
case RATE_MCS_CHAN_WIDTH_80:
|
|
rx_status->bw = RATE_INFO_BW_80;
|
|
break;
|
|
case RATE_MCS_CHAN_WIDTH_160:
|
|
rx_status->bw = RATE_INFO_BW_160;
|
|
break;
|
|
}
|
|
if (rate_n_flags & RATE_MCS_SGI_MSK)
|
|
rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
|
|
if (rate_n_flags & RATE_HT_MCS_GF_MSK)
|
|
rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
|
|
if (rate_n_flags & RATE_MCS_LDPC_MSK)
|
|
rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
|
|
if (rate_n_flags & RATE_MCS_HT_MSK) {
|
|
u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
|
|
RATE_MCS_STBC_POS;
|
|
rx_status->encoding = RX_ENC_HT;
|
|
rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
|
|
rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
|
|
} else if (rate_n_flags & RATE_MCS_VHT_MSK) {
|
|
u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
|
|
RATE_MCS_STBC_POS;
|
|
rx_status->nss =
|
|
((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
|
|
RATE_VHT_MCS_NSS_POS) + 1;
|
|
rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
|
|
rx_status->encoding = RX_ENC_VHT;
|
|
rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
|
|
if (rate_n_flags & RATE_MCS_BF_MSK)
|
|
rx_status->enc_flags |= RX_ENC_FLAG_BF;
|
|
} else {
|
|
int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
|
|
rx_status->band);
|
|
|
|
if (WARN(rate < 0 || rate > 0xFF,
|
|
"Invalid rate flags 0x%x, band %d,\n",
|
|
rate_n_flags, rx_status->band)) {
|
|
kfree_skb(skb);
|
|
goto out;
|
|
}
|
|
rx_status->rate_idx = rate;
|
|
|
|
}
|
|
|
|
/* management stuff on default queue */
|
|
if (!queue) {
|
|
if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
|
|
ieee80211_is_probe_resp(hdr->frame_control)) &&
|
|
mvm->sched_scan_pass_all ==
|
|
SCHED_SCAN_PASS_ALL_ENABLED))
|
|
mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
|
|
|
|
if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
|
|
ieee80211_is_probe_resp(hdr->frame_control)))
|
|
rx_status->boottime_ns = ktime_get_boot_ns();
|
|
}
|
|
|
|
iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb);
|
|
if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
|
|
iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
|
|
out:
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
|
|
struct iwl_rx_cmd_buffer *rxb, int queue)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
struct iwl_frame_release *release = (void *)pkt->data;
|
|
struct ieee80211_sta *sta;
|
|
struct iwl_mvm_reorder_buffer *reorder_buf;
|
|
struct iwl_mvm_baid_data *ba_data;
|
|
|
|
int baid = release->baid;
|
|
|
|
IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
|
|
release->baid, le16_to_cpu(release->nssn));
|
|
|
|
if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
|
|
return;
|
|
|
|
rcu_read_lock();
|
|
|
|
ba_data = rcu_dereference(mvm->baid_map[baid]);
|
|
if (WARN_ON_ONCE(!ba_data))
|
|
goto out;
|
|
|
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
|
|
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
|
|
goto out;
|
|
|
|
reorder_buf = &ba_data->reorder_buf[queue];
|
|
|
|
spin_lock_bh(&reorder_buf->lock);
|
|
iwl_mvm_release_frames(mvm, sta, napi, ba_data, reorder_buf,
|
|
le16_to_cpu(release->nssn));
|
|
spin_unlock_bh(&reorder_buf->lock);
|
|
|
|
out:
|
|
rcu_read_unlock();
|
|
}
|