6.15-stable review patch. If anyone has any objections, please let me know.
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From: P Praneesh quic_ppranees@quicinc.com
[ Upstream commit 3973cda5ef496fd412fdec2c7c3403ac90e391b8 ]
Currently, the monitor Rx parser handler is inherited from the ath11k. However, the ath12k 802.11be hardware does not report the Rx TLV header in the MSDU data. Instead, the hardware reports those TLVs under the following TLV tags:
1. Buffer address 2. MPDU start 3. MPDU end 4. MSDU end
Therefore, add support for parsing the above TLVs in the Rx monitor path and use this information for MSDU buffer and status updates.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: P Praneesh quic_ppranees@quicinc.com Tested-by: Nicolas Escande nico.escande@gmail.com Reviewed-by: Vasanthakumar Thiagarajan vasanthakumar.thiagarajan@oss.qualcomm.com Signed-off-by: Karthikeyan Periyasamy quic_periyasa@quicinc.com Link: https://patch.msgid.link/20250324062518.2752822-3-quic_periyasa@quicinc.com Signed-off-by: Jeff Johnson jeff.johnson@oss.qualcomm.com Stable-dep-of: f5d6b15d9503 ("wifi: ath12k: fix wrong handling of CCMP256 and GCMP ciphers") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath12k/dp.h | 2 + drivers/net/wireless/ath/ath12k/dp_mon.c | 157 ++++++++++++++++++++++- drivers/net/wireless/ath/ath12k/dp_mon.h | 4 +- drivers/net/wireless/ath/ath12k/dp_rx.c | 2 + drivers/net/wireless/ath/ath12k/hal_rx.h | 12 +- 5 files changed, 170 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/ath/ath12k/dp.h b/drivers/net/wireless/ath/ath12k/dp.h index 75435a931548c..427a87b63dec3 100644 --- a/drivers/net/wireless/ath/ath12k/dp.h +++ b/drivers/net/wireless/ath/ath12k/dp.h @@ -106,6 +106,8 @@ struct dp_mon_mpdu { struct list_head list; struct sk_buff *head; struct sk_buff *tail; + u32 err_bitmap; + u8 decap_format; };
#define DP_MON_MAX_STATUS_BUF 32 diff --git a/drivers/net/wireless/ath/ath12k/dp_mon.c b/drivers/net/wireless/ath/ath12k/dp_mon.c index d22800e894850..8c78f601f70aa 100644 --- a/drivers/net/wireless/ath/ath12k/dp_mon.c +++ b/drivers/net/wireless/ath/ath12k/dp_mon.c @@ -1647,7 +1647,7 @@ ath12k_dp_mon_rx_parse_status_tlv(struct ath12k *ar, u32_get_bits(info[0], HAL_RX_MPDU_START_INFO0_PPDU_ID); }
- break; + return HAL_RX_MON_STATUS_MPDU_START; } case HAL_RX_MSDU_START: /* TODO: add msdu start parsing logic */ @@ -2088,6 +2088,144 @@ static int ath12k_dp_mon_rx_deliver(struct ath12k *ar, return -EINVAL; }
+static int ath12k_dp_pkt_set_pktlen(struct sk_buff *skb, u32 len) +{ + if (skb->len > len) { + skb_trim(skb, len); + } else { + if (skb_tailroom(skb) < len - skb->len) { + if ((pskb_expand_head(skb, 0, + len - skb->len - skb_tailroom(skb), + GFP_ATOMIC))) { + return -ENOMEM; + } + } + skb_put(skb, (len - skb->len)); + } + + return 0; +} + +static void ath12k_dp_mon_parse_rx_msdu_end_err(u32 info, u32 *errmap) +{ + if (info & RX_MSDU_END_INFO13_FCS_ERR) + *errmap |= HAL_RX_MPDU_ERR_FCS; + + if (info & RX_MSDU_END_INFO13_DECRYPT_ERR) + *errmap |= HAL_RX_MPDU_ERR_DECRYPT; + + if (info & RX_MSDU_END_INFO13_TKIP_MIC_ERR) + *errmap |= HAL_RX_MPDU_ERR_TKIP_MIC; + + if (info & RX_MSDU_END_INFO13_A_MSDU_ERROR) + *errmap |= HAL_RX_MPDU_ERR_AMSDU_ERR; + + if (info & RX_MSDU_END_INFO13_OVERFLOW_ERR) + *errmap |= HAL_RX_MPDU_ERR_OVERFLOW; + + if (info & RX_MSDU_END_INFO13_MSDU_LEN_ERR) + *errmap |= HAL_RX_MPDU_ERR_MSDU_LEN; + + if (info & RX_MSDU_END_INFO13_MPDU_LEN_ERR) + *errmap |= HAL_RX_MPDU_ERR_MPDU_LEN; +} + +static int +ath12k_dp_mon_parse_status_msdu_end(struct ath12k_mon_data *pmon, + const struct hal_rx_msdu_end *msdu_end) +{ + struct dp_mon_mpdu *mon_mpdu = pmon->mon_mpdu; + + ath12k_dp_mon_parse_rx_msdu_end_err(__le32_to_cpu(msdu_end->info2), + &mon_mpdu->err_bitmap); + + mon_mpdu->decap_format = le32_get_bits(msdu_end->info1, + RX_MSDU_END_INFO11_DECAP_FORMAT); + + return 0; +} + +static int +ath12k_dp_mon_parse_status_buf(struct ath12k *ar, + struct ath12k_mon_data *pmon, + const struct dp_mon_packet_info *packet_info) +{ + struct ath12k_base *ab = ar->ab; + struct dp_rxdma_mon_ring *buf_ring = &ab->dp.rxdma_mon_buf_ring; + struct sk_buff *msdu; + int buf_id; + u32 offset; + + buf_id = u32_get_bits(packet_info->cookie, DP_RXDMA_BUF_COOKIE_BUF_ID); + + spin_lock_bh(&buf_ring->idr_lock); + msdu = idr_remove(&buf_ring->bufs_idr, buf_id); + spin_unlock_bh(&buf_ring->idr_lock); + + if (unlikely(!msdu)) { + ath12k_warn(ab, "mon dest desc with inval buf_id %d\n", buf_id); + return 0; + } + + dma_unmap_single(ab->dev, ATH12K_SKB_RXCB(msdu)->paddr, + msdu->len + skb_tailroom(msdu), + DMA_FROM_DEVICE); + + offset = packet_info->dma_length + ATH12K_MON_RX_DOT11_OFFSET; + if (ath12k_dp_pkt_set_pktlen(msdu, offset)) { + dev_kfree_skb_any(msdu); + goto dest_replenish; + } + + if (!pmon->mon_mpdu->head) + pmon->mon_mpdu->head = msdu; + else + pmon->mon_mpdu->tail->next = msdu; + + pmon->mon_mpdu->tail = msdu; + +dest_replenish: + ath12k_dp_mon_buf_replenish(ab, buf_ring, 1); + + return 0; +} + +static int +ath12k_dp_mon_parse_rx_dest_tlv(struct ath12k *ar, + struct ath12k_mon_data *pmon, + enum hal_rx_mon_status hal_status, + const void *tlv_data) +{ + switch (hal_status) { + case HAL_RX_MON_STATUS_MPDU_START: + if (WARN_ON_ONCE(pmon->mon_mpdu)) + break; + + pmon->mon_mpdu = kzalloc(sizeof(*pmon->mon_mpdu), GFP_ATOMIC); + if (!pmon->mon_mpdu) + return -ENOMEM; + break; + case HAL_RX_MON_STATUS_BUF_ADDR: + return ath12k_dp_mon_parse_status_buf(ar, pmon, tlv_data); + case HAL_RX_MON_STATUS_MPDU_END: + /* If no MSDU then free empty MPDU */ + if (pmon->mon_mpdu->tail) { + pmon->mon_mpdu->tail->next = NULL; + list_add_tail(&pmon->mon_mpdu->list, &pmon->dp_rx_mon_mpdu_list); + } else { + kfree(pmon->mon_mpdu); + } + pmon->mon_mpdu = NULL; + break; + case HAL_RX_MON_STATUS_MSDU_END: + return ath12k_dp_mon_parse_status_msdu_end(pmon, tlv_data); + default: + break; + } + + return 0; +} + static enum hal_rx_mon_status ath12k_dp_mon_parse_rx_dest(struct ath12k *ar, struct ath12k_mon_data *pmon, struct sk_buff *skb) @@ -2114,14 +2252,20 @@ ath12k_dp_mon_parse_rx_dest(struct ath12k *ar, struct ath12k_mon_data *pmon, tlv_len = le64_get_bits(tlv->tl, HAL_TLV_64_HDR_LEN);
hal_status = ath12k_dp_mon_rx_parse_status_tlv(ar, pmon, tlv); + + if (ar->monitor_started && + ath12k_dp_mon_parse_rx_dest_tlv(ar, pmon, hal_status, tlv->value)) + return HAL_RX_MON_STATUS_PPDU_DONE; + ptr += sizeof(*tlv) + tlv_len; ptr = PTR_ALIGN(ptr, HAL_TLV_64_ALIGN);
- if ((ptr - skb->data) >= DP_RX_BUFFER_SIZE) + if ((ptr - skb->data) > skb->len) break;
} while ((hal_status == HAL_RX_MON_STATUS_PPDU_NOT_DONE) || (hal_status == HAL_RX_MON_STATUS_BUF_ADDR) || + (hal_status == HAL_RX_MON_STATUS_MPDU_START) || (hal_status == HAL_RX_MON_STATUS_MPDU_END) || (hal_status == HAL_RX_MON_STATUS_MSDU_END));
@@ -2142,9 +2286,11 @@ ath12k_dp_mon_rx_parse_mon_status(struct ath12k *ar, struct dp_mon_mpdu *tmp; struct dp_mon_mpdu *mon_mpdu = pmon->mon_mpdu; struct sk_buff *head_msdu, *tail_msdu; - enum hal_rx_mon_status hal_status = HAL_RX_MON_STATUS_BUF_DONE; + enum hal_rx_mon_status hal_status;
- ath12k_dp_mon_parse_rx_dest(ar, pmon, skb); + hal_status = ath12k_dp_mon_parse_rx_dest(ar, pmon, skb); + if (hal_status != HAL_RX_MON_STATUS_PPDU_DONE) + return hal_status;
list_for_each_entry_safe(mon_mpdu, tmp, &pmon->dp_rx_mon_mpdu_list, list) { list_del(&mon_mpdu->list); @@ -2158,6 +2304,7 @@ ath12k_dp_mon_rx_parse_mon_status(struct ath12k *ar,
kfree(mon_mpdu); } + return hal_status; }
@@ -3346,7 +3493,7 @@ int ath12k_dp_mon_srng_process(struct ath12k *ar, int *budget, ath12k_dp_mon_rx_memset_ppdu_info(ppdu_info);
while ((skb = __skb_dequeue(&skb_list))) { - hal_status = ath12k_dp_mon_parse_rx_dest(ar, pmon, skb); + hal_status = ath12k_dp_mon_rx_parse_mon_status(ar, pmon, skb, napi); if (hal_status != HAL_RX_MON_STATUS_PPDU_DONE) { ppdu_info->ppdu_continuation = true; dev_kfree_skb_any(skb); diff --git a/drivers/net/wireless/ath/ath12k/dp_mon.h b/drivers/net/wireless/ath/ath12k/dp_mon.h index e4368eb42aca8..b039f6b9277c6 100644 --- a/drivers/net/wireless/ath/ath12k/dp_mon.h +++ b/drivers/net/wireless/ath/ath12k/dp_mon.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: BSD-3-Clause-Clear */ /* * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved. - * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. */
#ifndef ATH12K_DP_MON_H @@ -9,6 +9,8 @@
#include "core.h"
+#define ATH12K_MON_RX_DOT11_OFFSET 5 + enum dp_monitor_mode { ATH12K_DP_TX_MONITOR_MODE, ATH12K_DP_RX_MONITOR_MODE diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c index 125ccbd0532ce..d6794c753f3ae 100644 --- a/drivers/net/wireless/ath/ath12k/dp_rx.c +++ b/drivers/net/wireless/ath/ath12k/dp_rx.c @@ -4482,6 +4482,8 @@ int ath12k_dp_rx_pdev_mon_attach(struct ath12k *ar)
pmon->mon_last_linkdesc_paddr = 0; pmon->mon_last_buf_cookie = DP_RX_DESC_COOKIE_MAX + 1; + INIT_LIST_HEAD(&pmon->dp_rx_mon_mpdu_list); + pmon->mon_mpdu = NULL; spin_lock_init(&pmon->mon_lock);
return 0; diff --git a/drivers/net/wireless/ath/ath12k/hal_rx.h b/drivers/net/wireless/ath/ath12k/hal_rx.h index 6bdcd0867d86e..6f10e4222ba6e 100644 --- a/drivers/net/wireless/ath/ath12k/hal_rx.h +++ b/drivers/net/wireless/ath/ath12k/hal_rx.h @@ -108,11 +108,12 @@ enum hal_rx_mon_status { HAL_RX_MON_STATUS_PPDU_DONE, HAL_RX_MON_STATUS_BUF_DONE, HAL_RX_MON_STATUS_BUF_ADDR, + HAL_RX_MON_STATUS_MPDU_START, HAL_RX_MON_STATUS_MPDU_END, HAL_RX_MON_STATUS_MSDU_END, };
-#define HAL_RX_MAX_MPDU 256 +#define HAL_RX_MAX_MPDU 1024 #define HAL_RX_NUM_WORDS_PER_PPDU_BITMAP (HAL_RX_MAX_MPDU >> 5)
struct hal_rx_user_status { @@ -506,6 +507,15 @@ struct hal_rx_mpdu_start { __le32 rsvd2[16]; } __packed;
+struct hal_rx_msdu_end { + __le32 info0; + __le32 rsvd0[18]; + __le32 info1; + __le32 rsvd1[10]; + __le32 info2; + __le32 rsvd2; +} __packed; + #define HAL_RX_PPDU_END_DURATION GENMASK(23, 0) struct hal_rx_ppdu_end_duration { __le32 rsvd0[9];