diff options
Diffstat (limited to 'drivers/net/wireless/ath')
-rw-r--r-- | drivers/net/wireless/ath/ath11k/Kconfig | 1 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/core.h | 1 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/dp.c | 8 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/dp.h | 12 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/dp_rx.c | 755 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/dp_rx.h | 1 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/mac.c | 14 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/peer.h | 7 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath11k/rx_desc.h | 2 |
9 files changed, 709 insertions, 92 deletions
diff --git a/drivers/net/wireless/ath/ath11k/Kconfig b/drivers/net/wireless/ath/ath11k/Kconfig index c88e16d4022b..738f99090d83 100644 --- a/drivers/net/wireless/ath/ath11k/Kconfig +++ b/drivers/net/wireless/ath/ath11k/Kconfig @@ -3,6 +3,7 @@ config ATH11K tristate "Qualcomm Technologies 802.11ax chipset support" depends on MAC80211 && HAS_DMA depends on REMOTEPROC + depends on CRYPTO_MICHAEL_MIC depends on ARCH_QCOM || COMPILE_TEST select ATH_COMMON select QCOM_QMI_HELPERS diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h index 5c767d87c174..af83429fb4fd 100644 --- a/drivers/net/wireless/ath/ath11k/core.h +++ b/drivers/net/wireless/ath/ath11k/core.h @@ -77,6 +77,7 @@ struct ath11k_skb_rxcb { u8 err_code; u8 mac_id; u8 unmapped; + u8 is_frag; }; enum ath11k_hw_rev { diff --git a/drivers/net/wireless/ath/ath11k/dp.c b/drivers/net/wireless/ath/ath11k/dp.c index ce7634111bcf..99717447ca1d 100644 --- a/drivers/net/wireless/ath/ath11k/dp.c +++ b/drivers/net/wireless/ath/ath11k/dp.c @@ -3,6 +3,7 @@ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. */ +#include <crypto/hash.h> #include "core.h" #include "dp_tx.h" #include "hal_tx.h" @@ -33,6 +34,7 @@ void ath11k_dp_peer_cleanup(struct ath11k *ar, int vdev_id, const u8 *addr) } ath11k_peer_rx_tid_cleanup(ar, peer); + crypto_free_shash(peer->tfm_mmic); spin_unlock_bh(&ab->base_lock); } @@ -65,6 +67,12 @@ int ath11k_dp_peer_setup(struct ath11k *ar, int vdev_id, const u8 *addr) } } + ret = ath11k_peer_rx_frag_setup(ar, addr, vdev_id); + if (ret) { + ath11k_warn(ab, "failed to setup rx defrag context\n"); + return ret; + } + /* TODO: Setup other peer specific resource used in data path */ return 0; diff --git a/drivers/net/wireless/ath/ath11k/dp.h b/drivers/net/wireless/ath/ath11k/dp.h index 4f9e4cea056a..ed11728478e9 100644 --- a/drivers/net/wireless/ath/ath11k/dp.h +++ b/drivers/net/wireless/ath/ath11k/dp.h @@ -22,6 +22,18 @@ struct dp_rx_tid { u32 size; u32 ba_win_sz; bool active; + + /* Info related to rx fragments */ + u32 cur_sn; + u16 last_frag_no; + u16 rx_frag_bitmap; + + struct sk_buff_head rx_frags; + struct hal_reo_dest_ring *dst_ring_desc; + + /* Timer info related to fragments */ + struct timer_list frag_timer; + struct ath11k_base *ab; }; #define DP_REO_DESC_FREE_TIMEOUT_MS 1000 diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c index dc7881baf809..9871f2d18ad3 100644 --- a/drivers/net/wireless/ath/ath11k/dp_rx.c +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c @@ -4,6 +4,7 @@ */ #include <linux/ieee80211.h> +#include <crypto/hash.h> #include "core.h" #include "debug.h" #include "hal_desc.h" @@ -13,6 +14,8 @@ #include "dp_tx.h" #include "peer.h" +#define ATH11K_DP_RX_FRAGMENT_TIMEOUT_MS (2 * HZ) + static u8 *ath11k_dp_rx_h_80211_hdr(struct hal_rx_desc *desc) { return desc->hdr_status; @@ -28,10 +31,44 @@ static enum hal_encrypt_type ath11k_dp_rx_h_mpdu_start_enctype(struct hal_rx_des __le32_to_cpu(desc->mpdu_start.info2)); } -static u8 ath11k_dp_rx_h_mpdu_start_decap_type(struct hal_rx_desc *desc) +static u8 ath11k_dp_rx_h_msdu_start_decap_type(struct hal_rx_desc *desc) +{ + return FIELD_GET(RX_MSDU_START_INFO2_DECAP_FORMAT, + __le32_to_cpu(desc->msdu_start.info2)); +} + +static bool ath11k_dp_rx_h_mpdu_start_seq_ctrl_valid(struct hal_rx_desc *desc) +{ + return !!FIELD_GET(RX_MPDU_START_INFO1_MPDU_SEQ_CTRL_VALID, + __le32_to_cpu(desc->mpdu_start.info1)); +} + +static bool ath11k_dp_rx_h_mpdu_start_fc_valid(struct hal_rx_desc *desc) +{ + return !!FIELD_GET(RX_MPDU_START_INFO1_MPDU_FCTRL_VALID, + __le32_to_cpu(desc->mpdu_start.info1)); +} + +static bool ath11k_dp_rx_h_mpdu_start_more_frags(struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE); + return ieee80211_has_morefrags(hdr->frame_control); +} + +static u16 ath11k_dp_rx_h_mpdu_start_frag_no(struct sk_buff *skb) { - return FIELD_GET(RX_MPDU_START_INFO5_DECAP_TYPE, - __le32_to_cpu(desc->mpdu_start.info5)); + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE); + return le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; +} + +static u16 ath11k_dp_rx_h_mpdu_start_seq_no(struct hal_rx_desc *desc) +{ + return FIELD_GET(RX_MPDU_START_INFO1_MPDU_SEQ_NUM, + __le32_to_cpu(desc->mpdu_start.info1)); } static bool ath11k_dp_rx_h_attn_msdu_done(struct hal_rx_desc *desc) @@ -137,6 +174,17 @@ static u8 ath11k_dp_rx_h_msdu_start_nss(struct hal_rx_desc *desc) return hweight8(mimo_ss_bitmap); } +static u8 ath11k_dp_rx_h_mpdu_start_tid(struct hal_rx_desc *desc) +{ + return FIELD_GET(RX_MPDU_START_INFO2_TID, + __le32_to_cpu(desc->mpdu_start.info2)); +} + +static u16 ath11k_dp_rx_h_mpdu_start_peer_id(struct hal_rx_desc *desc) +{ + return __le16_to_cpu(desc->mpdu_start.sw_peer_id); +} + static u8 ath11k_dp_rx_h_msdu_end_l3pad(struct hal_rx_desc *desc) { return FIELD_GET(RX_MSDU_END_INFO2_L3_HDR_PADDING, @@ -661,12 +709,75 @@ void ath11k_peer_rx_tid_delete(struct ath11k *ar, rx_tid->active = false; } +static int ath11k_dp_rx_link_desc_return(struct ath11k_base *ab, + u32 *link_desc, + enum hal_wbm_rel_bm_act action) +{ + struct ath11k_dp *dp = &ab->dp; + struct hal_srng *srng; + u32 *desc; + int ret = 0; + + srng = &ab->hal.srng_list[dp->wbm_desc_rel_ring.ring_id]; + + spin_lock_bh(&srng->lock); + + ath11k_hal_srng_access_begin(ab, srng); + + desc = ath11k_hal_srng_src_get_next_entry(ab, srng); + if (!desc) { + ret = -ENOBUFS; + goto exit; + } + + ath11k_hal_rx_msdu_link_desc_set(ab, (void *)desc, (void *)link_desc, + action); + +exit: + ath11k_hal_srng_access_end(ab, srng); + + spin_unlock_bh(&srng->lock); + + return ret; +} + +static void ath11k_dp_rx_frags_cleanup(struct dp_rx_tid *rx_tid, bool rel_link_desc) +{ + struct ath11k_base *ab = rx_tid->ab; + + lockdep_assert_held(&ab->base_lock); + + if (rx_tid->dst_ring_desc) { + if (rel_link_desc) + ath11k_dp_rx_link_desc_return(ab, (u32 *)rx_tid->dst_ring_desc, + HAL_WBM_REL_BM_ACT_PUT_IN_IDLE); + kfree(rx_tid->dst_ring_desc); + rx_tid->dst_ring_desc = NULL; + } + + rx_tid->cur_sn = 0; + rx_tid->last_frag_no = 0; + rx_tid->rx_frag_bitmap = 0; + __skb_queue_purge(&rx_tid->rx_frags); +} + void ath11k_peer_rx_tid_cleanup(struct ath11k *ar, struct ath11k_peer *peer) { + struct dp_rx_tid *rx_tid; int i; - for (i = 0; i <= IEEE80211_NUM_TIDS; i++) + lockdep_assert_held(&ar->ab->base_lock); + + for (i = 0; i <= IEEE80211_NUM_TIDS; i++) { + rx_tid = &peer->rx_tid[i]; + ath11k_peer_rx_tid_delete(ar, peer, i); + ath11k_dp_rx_frags_cleanup(rx_tid, true); + + spin_unlock_bh(&ar->ab->base_lock); + del_timer_sync(&rx_tid->frag_timer); + spin_lock_bh(&ar->ab->base_lock); + } } static int ath11k_peer_rx_tid_reo_update(struct ath11k *ar, @@ -1525,7 +1636,9 @@ static int ath11k_dp_rx_retrieve_amsdu(struct ath11k *ar, msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(rx_desc); l3_pad_bytes = ath11k_dp_rx_h_msdu_end_l3pad(lrx_desc); - if (!rxcb->is_continuation) { + if (rxcb->is_frag) { + skb_pull(msdu, HAL_RX_DESC_SIZE); + } else if (!rxcb->is_continuation) { skb_put(msdu, HAL_RX_DESC_SIZE + l3_pad_bytes + msdu_len); skb_pull(msdu, HAL_RX_DESC_SIZE + l3_pad_bytes); } else { @@ -1830,7 +1943,7 @@ static void ath11k_dp_rx_h_undecap(struct ath11k *ar, struct sk_buff *msdu, u8 decap; first_hdr = ath11k_dp_rx_h_80211_hdr(rx_desc); - decap = ath11k_dp_rx_h_mpdu_start_decap_type(rx_desc); + decap = ath11k_dp_rx_h_msdu_start_decap_type(rx_desc); switch (decap) { case DP_RX_DECAP_TYPE_NATIVE_WIFI: @@ -2668,99 +2781,563 @@ exit: return num_buffs_reaped; } -static int ath11k_dp_rx_link_desc_return(struct ath11k_base *ab, - u32 *link_desc, - enum hal_wbm_rel_bm_act action) +static void ath11k_dp_rx_frag_timer(struct timer_list *timer) { - struct ath11k_dp *dp = &ab->dp; - struct hal_srng *srng; - u32 *desc; - int ret = 0; + struct dp_rx_tid *rx_tid = from_timer(rx_tid, timer, frag_timer); - srng = &ab->hal.srng_list[dp->wbm_desc_rel_ring.ring_id]; + spin_lock_bh(&rx_tid->ab->base_lock); + if (rx_tid->last_frag_no && + rx_tid->rx_frag_bitmap == GENMASK(rx_tid->last_frag_no, 0)) { + spin_unlock_bh(&rx_tid->ab->base_lock); + return; + } + ath11k_dp_rx_frags_cleanup(rx_tid, true); + spin_unlock_bh(&rx_tid->ab->base_lock); +} - spin_lock_bh(&srng->lock); +int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id) +{ + struct ath11k_base *ab = ar->ab; + struct crypto_shash *tfm; + struct ath11k_peer *peer; + struct dp_rx_tid *rx_tid; + int i; - ath11k_hal_srng_access_begin(ab, srng); + tfm = crypto_alloc_shash("michael_mic", 0, 0); + if (IS_ERR(tfm)) + return PTR_ERR(tfm); - desc = ath11k_hal_srng_src_get_next_entry(ab, srng); - if (!desc) { - ret = -ENOBUFS; - goto exit; + spin_lock_bh(&ab->base_lock); + + peer = ath11k_peer_find(ab, vdev_id, peer_mac); + if (!peer) { + ath11k_warn(ab, "failed to find the peer to set up fragment info\n"); + spin_unlock_bh(&ab->base_lock); + return -ENOENT; } - ath11k_hal_rx_msdu_link_desc_set(ab, (void *)desc, (void *)link_desc, - action); + for (i = 0; i <= IEEE80211_NUM_TIDS; i++) { + rx_tid = &peer->rx_tid[i]; + rx_tid->ab = ab; + timer_setup(&rx_tid->frag_timer, ath11k_dp_rx_frag_timer, 0); + skb_queue_head_init(&rx_tid->rx_frags); + } -exit: - ath11k_hal_srng_access_end(ab, srng); + peer->tfm_mmic = tfm; + spin_unlock_bh(&ab->base_lock); - spin_unlock_bh(&srng->lock); + return 0; +} + +static int ath11k_dp_rx_h_michael_mic(struct crypto_shash *tfm, u8 *key, + struct ieee80211_hdr *hdr, u8 *data, + size_t data_len, u8 *mic) +{ + SHASH_DESC_ON_STACK(desc, tfm); + u8 mic_hdr[16] = {0}; + u8 tid = 0; + int ret; + + if (!tfm) + return -EINVAL; + + desc->tfm = tfm; + + ret = crypto_shash_setkey(tfm, key, 8); + if (ret) + goto out; + ret = crypto_shash_init(desc); + if (ret) + goto out; + + /* TKIP MIC header */ + memcpy(mic_hdr, ieee80211_get_DA(hdr), ETH_ALEN); + memcpy(mic_hdr + ETH_ALEN, ieee80211_get_SA(hdr), ETH_ALEN); + if (ieee80211_is_data_qos(hdr->frame_control)) + tid = ieee80211_get_tid(hdr); + mic_hdr[12] = tid; + + ret = crypto_shash_update(desc, mic_hdr, 16); + if (ret) + goto out; + ret = crypto_shash_update(desc, data, data_len); + if (ret) + goto out; + ret = crypto_shash_final(desc, mic); +out: + shash_desc_zero(desc); return ret; } -static void ath11k_dp_rx_frag_h_mpdu(struct ath11k *ar, - struct sk_buff *msdu, - struct hal_rx_desc *rx_desc, - struct ieee80211_rx_status *rx_status) +static int ath11k_dp_rx_h_verify_tkip_mic(struct ath11k *ar, struct ath11k_peer *peer, + struct sk_buff *msdu) { - u8 rx_channel; + struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)msdu->data; + struct ieee80211_rx_status *rxs = IEEE80211_SKB_RXCB(msdu); + struct ieee80211_key_conf *key_conf; + struct ieee80211_hdr *hdr; + u8 mic[IEEE80211_CCMP_MIC_LEN]; + int head_len, tail_len, ret; + size_t data_len; + u32 hdr_len; + u8 *key, *data; + u8 key_idx; + + if (ath11k_dp_rx_h_mpdu_start_enctype(rx_desc) != HAL_ENCRYPT_TYPE_TKIP_MIC) + return 0; + + hdr = (struct ieee80211_hdr *)(msdu->data + HAL_RX_DESC_SIZE); + hdr_len = ieee80211_hdrlen(hdr->frame_control); + head_len = hdr_len + HAL_RX_DESC_SIZE + IEEE80211_TKIP_IV_LEN; + tail_len = IEEE80211_CCMP_MIC_LEN + IEEE80211_TKIP_ICV_LEN + FCS_LEN; + + if (!is_multicast_ether_addr(hdr->addr1)) + key_idx = peer->ucast_keyidx; + else + key_idx = peer->mcast_keyidx; + + key_conf = peer->keys[key_idx]; + + data = msdu->data + head_len; + data_len = msdu->len - head_len - tail_len; + key = &key_conf->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]; + + ret = ath11k_dp_rx_h_michael_mic(peer->tfm_mmic, key, hdr, data, data_len, mic); + if (ret || memcmp(mic, data + data_len, IEEE80211_CCMP_MIC_LEN)) + goto mic_fail; + + return 0; + +mic_fail: + (ATH11K_SKB_RXCB(msdu))->is_first_msdu = 1; + (ATH11K_SKB_RXCB(msdu))->is_last_msdu = 1; + + rxs->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_MMIC_STRIPPED | + RX_FLAG_IV_STRIPPED | RX_FLAG_DECRYPTED; + skb_pull(msdu, HAL_RX_DESC_SIZE); + + ath11k_dp_rx_h_ppdu(ar, rx_desc, rxs); + ath11k_dp_rx_h_undecap(ar, msdu, rx_desc, + HAL_ENCRYPT_TYPE_TKIP_MIC, rxs, true); + ieee80211_rx(ar->hw, msdu); + return -EINVAL; +} + +static void ath11k_dp_rx_h_undecap_frag(struct ath11k *ar, struct sk_buff *msdu, + enum hal_encrypt_type enctype, u32 flags) +{ + struct ieee80211_hdr *hdr; + size_t hdr_len; + size_t crypto_len; + + if (!flags) + return; + + hdr = (struct ieee80211_hdr *)(msdu->data + HAL_RX_DESC_SIZE); + + if (flags & RX_FLAG_MIC_STRIPPED) + skb_trim(msdu, msdu->len - + ath11k_dp_rx_crypto_mic_len(ar, enctype)); + + if (flags & RX_FLAG_ICV_STRIPPED) + skb_trim(msdu, msdu->len - + ath11k_dp_rx_crypto_icv_len(ar, enctype)); + + if (flags & RX_FLAG_IV_STRIPPED) { + hdr_len = ieee80211_hdrlen(hdr->frame_control); + crypto_len = ath11k_dp_rx_crypto_param_len(ar, enctype); + + memmove((void *)msdu->data + HAL_RX_DESC_SIZE + crypto_len, + (void *)msdu->data + HAL_RX_DESC_SIZE, hdr_len); + skb_pull(msdu, crypto_len); + } +} + +static int ath11k_dp_rx_h_defrag(struct ath11k *ar, + struct ath11k_peer *peer, + struct dp_rx_tid *rx_tid, + struct sk_buff **defrag_skb) +{ + struct hal_rx_desc *rx_desc; + struct sk_buff *skb, *first_frag, *last_frag; + struct ieee80211_hdr *hdr; enum hal_encrypt_type enctype; - bool is_decrypted; - u32 err_bitmap; + bool is_decrypted = false; + int msdu_len = 0; + int extra_space; + u32 flags; + + first_frag = skb_peek(&rx_tid->rx_frags); + last_frag = skb_peek_tail(&rx_tid->rx_frags); + + skb_queue_walk(&rx_tid->rx_frags, skb) { + flags = 0; + rx_desc = (struct hal_rx_desc *)skb->data; + hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE); + + enctype = ath11k_dp_rx_h_mpdu_start_enctype(rx_desc); + if (enctype != HAL_ENCRYPT_TYPE_OPEN) + is_decrypted = ath11k_dp_rx_h_attn_is_decrypted(rx_desc); + + if (is_decrypted) { + if (skb != first_frag) + flags |= RX_FLAG_IV_STRIPPED; + if (skb != last_frag) + flags |= RX_FLAG_ICV_STRIPPED | + RX_FLAG_MIC_STRIPPED; + } - is_decrypted = ath11k_dp_rx_h_attn_is_decrypted(rx_desc); - enctype = ath11k_dp_rx_h_mpdu_start_enctype(rx_desc); - err_bitmap = ath11k_dp_rx_h_attn_mpdu_err(rx_desc); + /* RX fragments are always raw packets */ + if (skb != last_frag) + skb_trim(skb, skb->len - FCS_LEN); + ath11k_dp_rx_h_undecap_frag(ar, skb, enctype, flags); - if (err_bitmap & DP_RX_MPDU_ERR_FCS) - rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; + if (skb != first_frag) + skb_pull(skb, HAL_RX_DESC_SIZE + + ieee80211_hdrlen(hdr->frame_control)); + msdu_len += skb->len; + } - if (err_bitmap & DP_RX_MPDU_ERR_TKIP_MIC) - rx_status->flag |= RX_FLAG_MMIC_ERROR; + extra_space = msdu_len - (DP_RX_BUFFER_SIZE + skb_tailroom(first_frag)); + if (extra_space > 0 && + (pskb_expand_head(first_frag, 0, extra_space, GFP_ATOMIC) < 0)) + return -ENOMEM; - rx_status->encoding = RX_ENC_LEGACY; - rx_status->bw = RATE_INFO_BW_20; + __skb_unlink(first_frag, &rx_tid->rx_frags); + while ((skb = __skb_dequeue(&rx_tid->rx_frags))) { + skb_put_data(first_frag, skb->data, skb->len); + dev_kfree_skb_any(skb); + } - rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL; + hdr = (struct ieee80211_hdr *)(first_frag->data + HAL_RX_DESC_SIZE); + hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_MOREFRAGS); + ATH11K_SKB_RXCB(first_frag)->is_frag = 1; - rx_channel = ath11k_dp_rx_h_msdu_start_freq(rx_desc); + if (ath11k_dp_rx_h_verify_tkip_mic(ar, peer, first_frag)) + first_frag = NULL; - if (rx_channel >= 1 && rx_channel <= 14) { - rx_status->band = NL80211_BAND_2GHZ; - } else if (rx_channel >= 36 && rx_channel <= 173) { - rx_status->band = NL80211_BAND_5GHZ; - } else { - ath11k_warn(ar->ab, "Unsupported Channel info received %d\n", - rx_channel); + *defrag_skb = first_frag; + return 0; +} + +static int ath11k_dp_rx_h_defrag_reo_reinject(struct ath11k *ar, struct dp_rx_tid *rx_tid, + struct sk_buff *defrag_skb) +{ + struct ath11k_base *ab = ar->ab; + struct ath11k_pdev_dp *dp = &ar->dp; + struct dp_rxdma_ring *rx_refill_ring = &dp->rx_refill_buf_ring; + struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)defrag_skb->data; + struct hal_reo_entrance_ring *reo_ent_ring; + struct hal_reo_dest_ring *reo_dest_ring; + struct dp_link_desc_bank *link_desc_banks; + struct hal_rx_msdu_link *msdu_link; + struct hal_rx_msdu_details *msdu0; + struct hal_srng *srng; + dma_addr_t paddr; + u32 desc_bank, msdu_info, mpdu_info; + u32 dst_idx, cookie; + u32 *msdu_len_offset; + int ret, buf_id; + + link_desc_banks = ab->dp.link_desc_banks; + reo_dest_ring = rx_tid->dst_ring_desc; + + ath11k_hal_rx_reo_ent_paddr_get(ab, reo_dest_ring, &paddr, &desc_bank); + msdu_link = (struct hal_rx_msdu_link *)(link_desc_banks[desc_bank].vaddr + + (paddr - link_desc_banks[desc_bank].paddr)); + msdu0 = &msdu_link->msdu_link[0]; + dst_idx = FIELD_GET(RX_MSDU_DESC_INFO0_REO_DEST_IND, msdu0->rx_msdu_info.info0); + memset(msdu0, 0, sizeof(*msdu0)); + + msdu_info = FIELD_PREP(RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU, 1) | + FIELD_PREP(RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU, 1) | + FIELD_PREP(RX_MSDU_DESC_INFO0_MSDU_CONTINUATION, 0) | + FIELD_PREP(RX_MSDU_DESC_INFO0_MSDU_LENGTH, + defrag_skb->len - HAL_RX_DESC_SIZE) | + FIELD_PREP(RX_MSDU_DESC_INFO0_REO_DEST_IND, dst_idx) | + FIELD_PREP(RX_MSDU_DESC_INFO0_VALID_SA, 1) | + FIELD_PREP(RX_MSDU_DESC_INFO0_VALID_DA, 1); + msdu0->rx_msdu_info.info0 = msdu_info; + + /* change msdu len in hal rx desc */ + msdu_len_offset = (u32 *)&rx_desc->msdu_start; + *msdu_len_offset &= ~(RX_MSDU_START_INFO1_MSDU_LENGTH); + *msdu_len_offset |= defrag_skb->len - HAL_RX_DESC_SIZE; + + paddr = dma_map_single(ab->dev, defrag_skb->data, + defrag_skb->len + skb_tailroom(defrag_skb), + DMA_FROM_DEVICE); + if (dma_mapping_error(ab->dev, paddr)) + return -ENOMEM; + + spin_lock_bh(&rx_refill_ring->idr_lock); + buf_id = idr_alloc(&rx_refill_ring->bufs_idr, defrag_skb, 0, + rx_refill_ring->bufs_max * 3, GFP_ATOMIC); + spin_unlock_bh(&rx_refill_ring->idr_lock); + if (buf_id < 0) { + ret = -ENOMEM; + goto err_unmap_dma; + } + + ATH11K_SKB_RXCB(defrag_skb)->paddr = paddr; + cookie = FIELD_PREP(DP_RXDMA_BUF_COOKIE_PDEV_ID, dp->mac_id) | + FIELD_PREP(DP_RXDMA_BUF_COOKIE_BUF_ID, buf_id); + + ath11k_hal_rx_buf_addr_info_set(msdu0, paddr, cookie, HAL_RX_BUF_RBM_SW3_BM); + + /* Fill mpdu details into reo entrace ring */ + srng = &ab->hal.srng_list[ab->dp.reo_reinject_ring.ring_id]; + + spin_lock_bh(&srng->lock); + ath11k_hal_srng_access_begin(ab, srng); + + reo_ent_ring = (struct hal_reo_entrance_ring *) + ath11k_hal_srng_src_get_next_entry(ab, srng); + if (!reo_ent_ring) { + ath11k_hal_srng_access_end(ab, srng); + spin_unlock_bh(&srng->lock); + ret = -ENOSPC; + goto err_free_idr; + } + memset(reo_ent_ring, 0, sizeof(*reo_ent_ring)); + + ath11k_hal_rx_reo_ent_paddr_get(ab, reo_dest_ring, &paddr, &desc_bank); + ath11k_hal_rx_buf_addr_info_set(reo_ent_ring, paddr, desc_bank, + HAL_RX_BUF_RBM_WBM_IDLE_DESC_LIST); + + mpdu_info = FIELD_PREP(RX_MPDU_DESC_INFO0_MSDU_COUNT, 1) | + FIELD_PREP(RX_MPDU_DESC_INFO0_SEQ_NUM, rx_tid->cur_sn) | + FIELD_PREP(RX_MPDU_DESC_INFO0_FRAG_FLAG, 0) | + FIELD_PREP(RX_MPDU_DESC_INFO0_VALID_SA, 1) | + FIELD_PREP(RX_MPDU_DESC_INFO0_VALID_DA, 1) | + FIELD_PREP(RX_MPDU_DESC_INFO0_RAW_MPDU, 1) | + FIELD_PREP(RX_MPDU_DESC_INFO0_VALID_PN, 1); + + reo_ent_ring->rx_mpdu_info.info0 = mpdu_info; + reo_ent_ring->rx_mpdu_info.meta_data = reo_dest_ring->rx_mpdu_info.meta_data; + reo_ent_ring->queue_addr_lo = reo_dest_ring->queue_addr_lo; + reo_ent_ring->info0 = FIELD_PREP(HAL_REO_ENTR_RING_INFO0_QUEUE_ADDR_HI, + FIELD_GET(HAL_REO_DEST_RING_INFO0_QUEUE_ADDR_HI, + reo_dest_ring->info0)) | + FIELD_PREP(HAL_REO_ENTR_RING_INFO0_DEST_IND, dst_idx); + ath11k_hal_srng_access_end(ab, srng); + spin_unlock_bh(&srng->lock); + + return 0; + +err_free_idr: + spin_lock_bh(&rx_refill_ring->idr_lock); + idr_remove(&rx_refill_ring->bufs_idr, buf_id); + spin_unlock_bh(&rx_refill_ring->idr_lock); +err_unmap_dma: + dma_unmap_single(ab->dev, paddr, defrag_skb->len + skb_tailroom(defrag_skb), + DMA_FROM_DEVICE); + return ret; +} + +static int ath11k_dp_rx_h_cmp_frags(struct sk_buff *a, struct sk_buff *b) +{ + int frag1, frag2; + + frag1 = ath11k_dp_rx_h_mpdu_start_frag_no(a); + frag2 = ath11k_dp_rx_h_mpdu_start_frag_no(b); + + return frag1 - frag2; +} + +static void ath11k_dp_rx_h_sort_frags(struct sk_buff_head *frag_list, + struct sk_buff *cur_frag) +{ + struct sk_buff *skb; + int cmp; + + skb_queue_walk(frag_list, skb) { + cmp = ath11k_dp_rx_h_cmp_frags(skb, cur_frag); + if (cmp < 0) + continue; + __skb_queue_before(frag_list, skb, cur_frag); return; } + __skb_queue_tail(frag_list, cur_frag); +} - rx_status->freq = ieee80211_channel_to_frequency(rx_channel, - rx_status->band); - ath11k_dp_rx_h_rate(ar, rx_desc, rx_status); +static u64 ath11k_dp_rx_h_get_pn(struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr; + u64 pn = 0; + u8 *ehdr; - /* Rx fragments are received in raw mode */ - skb_trim(msdu, msdu->len - FCS_LEN); + hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE); + ehdr = skb->data + HAL_RX_DESC_SIZE + ieee80211_hdrlen(hdr->frame_control); - if (is_decrypted) { - rx_status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED; - skb_trim(msdu, msdu->len - - ath11k_dp_rx_crypto_mic_len(ar, enctype)); + pn = ehdr[0]; + pn |= (u64)ehdr[1] << 8; + pn |= (u64)ehdr[4] << 16; + pn |= (u64)ehdr[5] << 24; + pn |= (u64)ehdr[6] << 32; + pn |= (u64)ehdr[7] << 40; + + return pn; +} + +static bool +ath11k_dp_rx_h_defrag_validate_incr_pn(struct ath11k *ar, struct dp_rx_tid *rx_tid) +{ + enum hal_encrypt_type encrypt_type; + struct sk_buff *first_frag, *skb; + struct hal_rx_desc *desc; + u64 last_pn; + u64 cur_pn; + + first_frag = skb_peek(&rx_tid->rx_frags); + desc = (struct hal_rx_desc *)first_frag->data; + + encrypt_type = ath11k_dp_rx_h_mpdu_start_enctype(desc); + if (encrypt_type != HAL_ENCRYPT_TYPE_CCMP_128 && + encrypt_type != HAL_ENCRYPT_TYPE_CCMP_256 && + encrypt_type != HAL_ENCRYPT_TYPE_GCMP_128 && + encrypt_type != HAL_ENCRYPT_TYPE_AES_GCMP_256) + return true; + + last_pn = ath11k_dp_rx_h_get_pn(first_frag); + skb_queue_walk(&rx_tid->rx_frags, skb) { + if (skb == first_frag) + continue; + + cur_pn = ath11k_dp_rx_h_get_pn(skb); + if (cur_pn != last_pn + 1) + return false; + last_pn = cur_pn; } + return true; +} + +static int ath11k_dp_rx_frag_h_mpdu(struct ath11k *ar, + struct sk_buff *msdu, + u32 *ring_desc) +{ + struct ath11k_base *ab = ar->ab; + struct hal_rx_desc *rx_desc; + struct ath11k_peer *peer; + struct dp_rx_tid *rx_tid; + struct sk_buff *defrag_skb = NULL; + u32 peer_id; + u16 seqno, frag_no; + u8 tid; + int ret = 0; + bool more_frags; + + rx_desc = (struct hal_rx_desc *)msdu->data; + peer_id = ath11k_dp_rx_h_mpdu_start_peer_id(rx_desc); + tid = ath11k_dp_rx_h_mpdu_start_tid(rx_desc); + seqno = ath11k_dp_rx_h_mpdu_start_seq_no(rx_desc); + frag_no = ath11k_dp_rx_h_mpdu_start_frag_no(msdu); + more_frags = ath11k_dp_rx_h_mpdu_start_more_frags(msdu); + + if (!ath11k_dp_rx_h_mpdu_start_seq_ctrl_valid(rx_desc) || + !ath11k_dp_rx_h_mpdu_start_fc_valid(rx_desc) || + tid > IEEE80211_NUM_TIDS) + return -EINVAL; + + /* received unfragmented packet in reo + * exception ring, this shouldn't happen + * as these packets typically come from + * reo2sw srngs. + */ + if (WARN_ON_ONCE(!frag_no && !more_frags)) + return -EINVAL; + + spin_lock_bh(&ab->base_lock); + peer = ath11k_peer_find_by_id(ab, peer_id); + if (!peer) { + ath11k_warn(ab, "failed to find the peer to de-fragment received fragment peer_id %d\n", + peer_id); + ret = -ENOENT; + goto out_unlock; + } + rx_tid = &peer->rx_tid[tid]; + + if ((!skb_queue_empty(&rx_tid->rx_frags) && seqno != rx_tid->cur_sn) || + skb_queue_empty(&rx_tid->rx_frags)) { + /* Flush stored fragments and start a new sequence */ + ath11k_dp_rx_frags_cleanup(rx_tid, true); + rx_tid->cur_sn = seqno; + } + + if (rx_tid->rx_frag_bitmap & BIT(frag_no)) { + /* Fragment already present */ + ret = -EINVAL; + goto out_unlock; + } + + if (frag_no > __fls(rx_tid->rx_frag_bitmap)) + __skb_queue_tail(&rx_tid->rx_frags, msdu); + else + ath11k_dp_rx_h_sort_frags(&rx_tid->rx_frags, msdu); + + rx_tid->rx_frag_bitmap |= BIT(frag_no); + if (!more_frags) + rx_tid->last_frag_no = frag_no; + + if (frag_no == 0) { + rx_tid->dst_ring_desc = kmemdup(ring_desc, + sizeof(*rx_tid->dst_ring_desc), + GFP_ATOMIC); + if (!rx_tid->dst_ring_desc) { + ret = -ENOMEM; + goto out_unlock; + } + } else { + ath11k_dp_rx_link_desc_return(ab, ring_desc, + HAL_WBM_REL_BM_ACT_PUT_IN_IDLE); + } + + if (!rx_tid->last_frag_no || + rx_tid->rx_frag_bitmap != GENMASK(rx_tid->last_frag_no, 0)) { + mod_timer(&rx_tid->frag_timer, jiffies + + ATH11K_DP_RX_FRAGMENT_TIMEOUT_MS); + goto out_unlock; + } + + spin_unlock_bh(&ab->base_lock); + del_timer_sync(&rx_tid->frag_timer); + spin_lock_bh(&ab->base_lock); + + peer = ath11k_peer_find_by_id(ab, peer_id); + if (!peer) + goto err_frags_cleanup; + + if (!ath11k_dp_rx_h_defrag_validate_incr_pn(ar, rx_tid)) + goto err_frags_cleanup; + + if (ath11k_dp_rx_h_defrag(ar, peer, rx_tid, &defrag_skb)) + goto err_frags_cleanup; + + if (!defrag_skb) + goto err_frags_cleanup; + + if (ath11k_dp_rx_h_defrag_reo_reinject(ar, rx_tid, defrag_skb)) + goto err_frags_cleanup; + + ath11k_dp_rx_frags_cleanup(rx_tid, false); + goto out_unlock; + +err_frags_cleanup: + dev_kfree_skb_any(defrag_skb); + ath11k_dp_rx_frags_cleanup(rx_tid, true); +out_unlock: + spin_unlock_bh(&ab->base_lock); + return ret; } static int -ath11k_dp_process_rx_err_buf(struct ath11k *ar, struct napi_struct *napi, - int buf_id, bool frag) +ath11k_dp_process_rx_err_buf(struct ath11k *ar, u32 *ring_desc, int buf_id, bool drop) { struct ath11k_pdev_dp *dp = &ar->dp; struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring; - struct ieee80211_rx_status rx_status = {0}; struct sk_buff *msdu; struct ath11k_skb_rxcb *rxcb; - struct ieee80211_rx_status *status; struct hal_rx_desc *rx_desc; u16 msdu_len; @@ -2781,10 +3358,7 @@ ath11k_dp_process_rx_err_buf(struct ath11k *ar, struct napi_struct *napi, msdu->len + skb_tailroom(msdu), DMA_FROM_DEVICE); - if (!frag) { - /* Process only rx fragments below, and drop - * msdu's indicated due to error reasons. - */ + if (drop) { dev_kfree_skb_any(msdu); return 0; } @@ -2803,16 +3377,12 @@ ath11k_dp_process_rx_err_buf(struct ath11k *ar, struct napi_struct *napi, rx_desc = (struct hal_rx_desc *)msdu->data; msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(rx_desc); skb_put(msdu, HAL_RX_DESC_SIZE + msdu_len); - skb_pull(msdu, HAL_RX_DESC_SIZE); - - ath11k_dp_rx_frag_h_mpdu(ar, msdu, rx_desc, &rx_status); - - status = IEEE80211_SKB_RXCB(msdu); - - *status = rx_status; - - ath11k_dp_rx_deliver_msdu(ar, napi, msdu); + if (ath11k_dp_rx_frag_h_mpdu(ar, msdu, ring_desc)) { + dev_kfree_skb_any(msdu); + ath11k_dp_rx_link_desc_return(ar->ab, ring_desc, + HAL_WBM_REL_BM_ACT_PUT_IN_IDLE); + } exit: rcu_read_unlock(); return 0; @@ -2837,6 +3407,7 @@ int ath11k_dp_process_rx_err(struct ath11k_base *ab, struct napi_struct *napi, dma_addr_t paddr; u32 *desc; bool is_frag; + u8 drop = 0; tot_n_bufs_reaped = 0; quota = budget; @@ -2878,9 +3449,15 @@ int ath11k_dp_process_rx_err(struct ath11k_base *ab, struct napi_struct *napi, is_frag = !!(reo_desc->rx_mpdu_info.info0 & RX_MPDU_DESC_INFO0_FRAG_FLAG); - /* Return the link desc back to wbm idle list */ - ath11k_dp_rx_link_desc_return(ab, desc, - HAL_WBM_REL_BM_ACT_PUT_IN_IDLE); + /* Process only rx fragments with one msdu per link desc below, and drop + * msdu's indicated due to error reasons. + */ + if (!is_frag || num_msdus > 1) { + drop = 1; + /* Return the link desc back to wbm idle list */ + ath11k_dp_rx_link_desc_return(ab, desc, + HAL_WBM_REL_BM_ACT_PUT_IN_IDLE); + } for (i = 0; i < num_msdus; i++) { buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID, @@ -2891,8 +3468,7 @@ int ath11k_dp_process_rx_err(struct ath11k_base *ab, struct napi_struct *napi, ar = ab->pdevs[mac_id].ar; - if (!ath11k_dp_process_rx_err_buf(ar, napi, buf_id, - is_frag)) { + if (!ath11k_dp_process_rx_err_buf(ar, desc, buf_id, drop)) { n_bufs_reaped[mac_id]++; tot_n_bufs_reaped++; } @@ -2961,7 +3537,7 @@ static int ath11k_dp_rx_h_null_q_desc(struct ath11k *ar, struct sk_buff *msdu, msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(desc); - if ((msdu_len + HAL_RX_DESC_SIZE) > DP_RX_BUFFER_SIZE) { + if (!rxcb->is_frag && ((msdu_len + HAL_RX_DESC_SIZE) > DP_RX_BUFFER_SIZE)) { /* First buffer will be freed by the caller, so deduct it's length */ msdu_len = msdu_len - (DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE); ath11k_dp_rx_null_q_desc_sg_drop(ar, msdu_len, msdu_list); @@ -2989,14 +3565,17 @@ static int ath11k_dp_rx_h_null_q_desc(struct ath11k *ar, struct sk_buff *msdu, rxcb->is_first_msdu = ath11k_dp_rx_h_msdu_end_first_msdu(desc); rxcb->is_last_msdu = ath11k_dp_rx_h_msdu_end_last_msdu(desc); - l3pad_bytes = ath11k_dp_rx_h_msdu_end_l3pad(desc); - - if ((HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE) - return -EINVAL; + if (rxcb->is_frag) { + skb_pull(msdu, HAL_RX_DESC_SIZE); + } else { + l3pad_bytes = ath11k_dp_rx_h_msdu_end_l3pad(desc); - skb_put(msdu, HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len); - skb_pull(msdu, HAL_RX_DESC_SIZE + l3pad_bytes); + if ((HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE) + return -EINVAL; + skb_put(msdu, HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len); + skb_pull(msdu, HAL_RX_DESC_SIZE + l3pad_bytes); + } ath11k_dp_rx_h_ppdu(ar, desc, status); __skb_queue_tail(&amsdu_list, msdu); diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.h b/drivers/net/wireless/ath/ath11k/dp_rx.h index 1b08b7dcafbc..c3f3ccd03a90 100644 --- a/drivers/net/wireless/ath/ath11k/dp_rx.h +++ b/drivers/net/wireless/ath/ath11k/dp_rx.h @@ -84,5 +84,6 @@ int ath11k_dp_rx_mon_status_bufs_replenish(struct ath11k_base *ab, int mac_id, gfp_t gfp); int ath11k_dp_rx_pdev_mon_detach(struct ath11k *ar); int ath11k_dp_rx_pdev_mon_attach(struct ath11k *ar); +int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id); #endif /* ATH11K_DP_RX_H */ diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index e28f5a348be6..2b9097557d95 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -2384,11 +2384,19 @@ static int ath11k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, spin_lock_bh(&ab->base_lock); peer = ath11k_peer_find(ab, arvif->vdev_id, peer_addr); - if (peer && cmd == SET_KEY) + if (peer && cmd == SET_KEY) { peer->keys[key->keyidx] = key; - else if (peer && cmd == DISABLE_KEY) + if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) + peer->ucast_keyidx = key->keyidx; + else + peer->mcast_keyidx = key->keyidx; + } else if (peer && cmd == DISABLE_KEY) { peer->keys[key->keyidx] = NULL; - else if (!peer) + if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) + peer->ucast_keyidx = 0; + else + peer->mcast_keyidx = 0; + } else if (!peer) /* impossible unless FW goes crazy */ ath11k_warn(ab, "peer %pM disappeared!\n", peer_addr); spin_unlock_bh(&ab->base_lock); diff --git a/drivers/net/wireless/ath/ath11k/peer.h b/drivers/net/wireless/ath/ath11k/peer.h index 9a40d1f6ccd9..55d9919b8b5d 100644 --- a/drivers/net/wireless/ath/ath11k/peer.h +++ b/drivers/net/wireless/ath/ath11k/peer.h @@ -17,6 +17,13 @@ struct ath11k_peer { /* protected by ab->data_lock */ struct ieee80211_key_conf *keys[WMI_MAX_KEY_INDEX + 1]; struct dp_rx_tid rx_tid[IEEE80211_NUM_TIDS + 1]; + + /* Info used in MMIC verification of + * RX fragments + */ + struct crypto_shash *tfm_mmic; + u8 mcast_keyidx; + u8 ucast_keyidx; }; void ath11k_peer_unmap_event(struct ath11k_base *ab, u16 peer_id); diff --git a/drivers/net/wireless/ath/ath11k/rx_desc.h b/drivers/net/wireless/ath/ath11k/rx_desc.h index 4d586fd1f872..1c4264637a41 100644 --- a/drivers/net/wireless/ath/ath11k/rx_desc.h +++ b/drivers/net/wireless/ath/ath11k/rx_desc.h @@ -342,7 +342,7 @@ struct rx_attention { #define RX_MPDU_START_INFO0_PROTO_VER_ERR BIT(12) #define RX_MPDU_START_INFO0_AST_LOOKUP_VALID BIT(13) -#define RX_MPDU_START_INFO1_MPDU_CTRL_VALID BIT(0) +#define RX_MPDU_START_INFO1_MPDU_FCTRL_VALID BIT(0) #define RX_MPDU_START_INFO1_MPDU_DUR_VALID BIT(1) #define RX_MPDU_START_INFO1_MAC_ADDR1_VALID BIT(2) #define RX_MPDU_START_INFO1_MAC_ADDR2_VALID BIT(3) |