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path: root/drivers/net/wireless/ath/ath10k/htt_rx.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath10k/htt_rx.c')
-rw-r--r--drivers/net/wireless/ath/ath10k/htt_rx.c230
1 files changed, 230 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 961e14633320..45f4eecc3839 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -2266,6 +2266,231 @@ err:
return true;
}
+static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb,
+ u16 head_len,
+ u16 hdr_len)
+{
+ u8 *ivp, *orig_hdr;
+
+ orig_hdr = skb->data;
+ ivp = orig_hdr + hdr_len + head_len;
+
+ /* the ExtIV bit is always set to 1 for TKIP */
+ if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
+ return -EINVAL;
+
+ memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
+ skb_pull(skb, IEEE80211_TKIP_IV_LEN);
+ skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN);
+ return 0;
+}
+
+static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb,
+ u16 head_len,
+ u16 hdr_len)
+{
+ u8 *ivp, *orig_hdr;
+
+ orig_hdr = skb->data;
+ ivp = orig_hdr + hdr_len + head_len;
+
+ /* the ExtIV bit is always set to 1 for TKIP */
+ if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
+ return -EINVAL;
+
+ memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
+ skb_pull(skb, IEEE80211_TKIP_IV_LEN);
+ skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
+ return 0;
+}
+
+static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb,
+ u16 head_len,
+ u16 hdr_len)
+{
+ u8 *ivp, *orig_hdr;
+
+ orig_hdr = skb->data;
+ ivp = orig_hdr + hdr_len + head_len;
+
+ /* the ExtIV bit is always set to 1 for CCMP */
+ if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
+ return -EINVAL;
+
+ skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN);
+ memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len);
+ skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
+ return 0;
+}
+
+static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb,
+ u16 head_len,
+ u16 hdr_len)
+{
+ u8 *orig_hdr;
+
+ orig_hdr = skb->data;
+
+ memmove(orig_hdr + IEEE80211_WEP_IV_LEN,
+ orig_hdr, head_len + hdr_len);
+ skb_pull(skb, IEEE80211_WEP_IV_LEN);
+ skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
+ return 0;
+}
+
+static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt,
+ struct htt_rx_fragment_indication *rx,
+ struct sk_buff *skb)
+{
+ struct ath10k *ar = htt->ar;
+ enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC;
+ enum htt_txrx_sec_cast_type sec_index;
+ struct htt_rx_indication_hl *rx_hl;
+ enum htt_security_types sec_type;
+ u32 tid, frag, seq, rx_desc_info;
+ union htt_rx_pn_t new_pn = {0};
+ struct htt_hl_rx_desc *rx_desc;
+ u16 peer_id, sc, hdr_space;
+ union htt_rx_pn_t *last_pn;
+ struct ieee80211_hdr *hdr;
+ int ret, num_mpdu_ranges;
+ struct ath10k_peer *peer;
+ struct htt_resp *resp;
+ size_t tot_hdr_len;
+
+ resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
+ skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
+ skb_trim(skb, skb->len - FCS_LEN);
+
+ peer_id = __le16_to_cpu(rx->peer_id);
+ rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl);
+
+ spin_lock_bh(&ar->data_lock);
+ peer = ath10k_peer_find_by_id(ar, peer_id);
+ if (!peer) {
+ ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id);
+ goto err;
+ }
+
+ num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1),
+ HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
+
+ tot_hdr_len = sizeof(struct htt_resp_hdr) +
+ sizeof(rx_hl->hdr) +
+ sizeof(rx_hl->ppdu) +
+ sizeof(rx_hl->prefix) +
+ sizeof(rx_hl->fw_desc) +
+ sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges;
+
+ tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
+ rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len);
+ rx_desc_info = __le32_to_cpu(rx_desc->info);
+
+ if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) {
+ spin_unlock_bh(&ar->data_lock);
+ return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
+ HTT_RX_NON_PN_CHECK,
+ HTT_RX_NON_TKIP_MIC);
+ }
+
+ hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len);
+
+ if (ieee80211_has_retry(hdr->frame_control))
+ goto err;
+
+ hdr_space = ieee80211_hdrlen(hdr->frame_control);
+ sc = __le16_to_cpu(hdr->seq_ctrl);
+ seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
+ frag = sc & IEEE80211_SCTL_FRAG;
+
+ sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ?
+ HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST;
+ sec_type = peer->rx_pn[sec_index].sec_type;
+ ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
+
+ switch (sec_type) {
+ case HTT_SECURITY_TKIP:
+ tkip_mic = HTT_RX_TKIP_MIC;
+ ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb,
+ tot_hdr_len +
+ rx_hl->fw_desc.len,
+ hdr_space);
+ if (ret)
+ goto err;
+ break;
+ case HTT_SECURITY_TKIP_NOMIC:
+ ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb,
+ tot_hdr_len +
+ rx_hl->fw_desc.len,
+ hdr_space);
+ if (ret)
+ goto err;
+ break;
+ case HTT_SECURITY_AES_CCMP:
+ ret = ath10k_htt_rx_frag_ccmp_decap(skb,
+ tot_hdr_len + rx_hl->fw_desc.len,
+ hdr_space);
+ if (ret)
+ goto err;
+ break;
+ case HTT_SECURITY_WEP128:
+ case HTT_SECURITY_WEP104:
+ case HTT_SECURITY_WEP40:
+ ret = ath10k_htt_rx_frag_wep_decap(skb,
+ tot_hdr_len + rx_hl->fw_desc.len,
+ hdr_space);
+ if (ret)
+ goto err;
+ break;
+ default:
+ break;
+ }
+
+ resp = (struct htt_resp *)(skb->data);
+
+ if (sec_type != HTT_SECURITY_AES_CCMP &&
+ sec_type != HTT_SECURITY_TKIP &&
+ sec_type != HTT_SECURITY_TKIP_NOMIC) {
+ spin_unlock_bh(&ar->data_lock);
+ return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
+ HTT_RX_NON_PN_CHECK,
+ HTT_RX_NON_TKIP_MIC);
+ }
+
+ last_pn = &peer->frag_tids_last_pn[tid];
+
+ if (frag == 0) {
+ if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl))
+ goto err;
+
+ last_pn->pn48 = new_pn.pn48;
+ peer->frag_tids_seq[tid] = seq;
+ } else if (sec_type == HTT_SECURITY_AES_CCMP) {
+ if (seq != peer->frag_tids_seq[tid])
+ goto err;
+
+ if (new_pn.pn48 != last_pn->pn48 + 1)
+ goto err;
+
+ last_pn->pn48 = new_pn.pn48;
+ last_pn = &peer->tids_last_pn[tid];
+ last_pn->pn48 = new_pn.pn48;
+ }
+
+ spin_unlock_bh(&ar->data_lock);
+
+ return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
+ HTT_RX_NON_PN_CHECK, tkip_mic);
+
+err:
+ spin_unlock_bh(&ar->data_lock);
+
+ /* Tell the caller that it must free the skb since we have not
+ * consumed it
+ */
+ return true;
+}
+
static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt,
struct htt_rx_indication *rx)
{
@@ -3511,6 +3736,10 @@ bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
skb->data, skb->len);
atomic_inc(&htt->num_mpdus_ready);
+
+ return ath10k_htt_rx_proc_rx_frag_ind(htt,
+ &resp->rx_frag_ind,
+ skb);
break;
}
case HTT_T2H_MSG_TYPE_TEST:
@@ -3724,6 +3953,7 @@ static const struct ath10k_htt_rx_ops htt_rx_ops_64 = {
};
static const struct ath10k_htt_rx_ops htt_rx_ops_hl = {
+ .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl,
};
void ath10k_htt_set_rx_ops(struct ath10k_htt *htt)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 06:26:36 +0000