/** ****************************************************************************** * * @file rwnx_rx.c * * Copyright (C) RivieraWaves 2012-2019 * ****************************************************************************** */ #include #include #include #include #include "rwnx_defs.h" #include "rwnx_rx.h" #include "rwnx_tx.h" #include "rwnx_prof.h" #include "ipc_host.h" #include "rwnx_events.h" #include "rwnx_compat.h" #include "aicwf_txrxif.h" #ifdef AICWF_ARP_OFFLOAD #include #include #include "rwnx_msg_tx.h" #endif #ifndef IEEE80211_MAX_CHAINS #define IEEE80211_MAX_CHAINS 4 #endif u8 dhcped; // = 0; u16 tx_legrates_lut_rate[] = { 10, 20, 55, 110, 60, 90, 120, 180, 240, 360, 480, 540 }; u16 legrates_lut_rate[] = { 10, 20, 55, 110, 0, 0, 0, 0, 480, 240, 120, 60, 540, 360, 180, 90 }; const u8 legrates_lut[] = { 0, /* 0 */ 1, /* 1 */ 2, /* 2 */ 3, /* 3 */ -1, /* 4 */ -1, /* 5 */ -1, /* 6 */ -1, /* 7 */ 10, /* 8 */ 8, /* 9 */ 6, /* 10 */ 4, /* 11 */ 11, /* 12 */ 9, /* 13 */ 7, /* 14 */ 5 /* 15 */ }; struct vendor_radiotap_hdr { u8 oui[3]; u8 subns; u16 len; u8 data[]; }; /** * rwnx_rx_get_vif - Return pointer to the destination vif * * @rwnx_hw: main driver data * @vif_idx: vif index present in rx descriptor * * Select the vif that should receive this frame. Returns NULL if the destination * vif is not active or vif is not specified in the descriptor. */ static inline struct rwnx_vif *rwnx_rx_get_vif(struct rwnx_hw *rwnx_hw, int vif_idx) { struct rwnx_vif *rwnx_vif = NULL; if (vif_idx < NX_VIRT_DEV_MAX) { rwnx_vif = rwnx_hw->vif_table[vif_idx]; if (!rwnx_vif || !rwnx_vif->up) return NULL; } return rwnx_vif; } /** * rwnx_rx_vector_convert - Convert a legacy RX vector into a new RX vector format * * @rwnx_hw: main driver data. * @rx_vect1: Rx vector 1 descriptor of the received frame. * @rx_vect2: Rx vector 2 descriptor of the received frame. */ static void rwnx_rx_vector_convert(struct rwnx_hw *rwnx_hw, struct rx_vector_1 *rx_vect1, struct rx_vector_2 *rx_vect2) { struct rx_vector_1_old rx_vect1_leg; struct rx_vector_2_old rx_vect2_leg; u32_l phy_vers = rwnx_hw->version_cfm.version_phy_2; // Check if we need to do the conversion. Only if old modem is used if (__MDM_MAJOR_VERSION(phy_vers) > 0) { rx_vect1->rssi1 = rx_vect1->rssi_leg; return; } // Copy the received vector locally memcpy(&rx_vect1_leg, rx_vect1, sizeof(struct rx_vector_1_old)); // Reset it memset(rx_vect1, 0, sizeof(struct rx_vector_1)); // Perform the conversion rx_vect1->format_mod = rx_vect1_leg.format_mod; rx_vect1->ch_bw = rx_vect1_leg.ch_bw; rx_vect1->antenna_set = rx_vect1_leg.antenna_set; rx_vect1->leg_length = rx_vect1_leg.leg_length; rx_vect1->leg_rate = rx_vect1_leg.leg_rate; rx_vect1->rssi1 = rx_vect1_leg.rssi1; switch (rx_vect1->format_mod) { case FORMATMOD_NON_HT: case FORMATMOD_NON_HT_DUP_OFDM: rx_vect1->leg.lsig_valid = rx_vect1_leg.lsig_valid; rx_vect1->leg.chn_bw_in_non_ht = rx_vect1_leg.num_extn_ss; rx_vect1->leg.dyn_bw_in_non_ht = rx_vect1_leg.dyn_bw; break; case FORMATMOD_HT_MF: case FORMATMOD_HT_GF: rx_vect1->ht.aggregation = rx_vect1_leg.aggregation; rx_vect1->ht.fec = rx_vect1_leg.fec_coding; rx_vect1->ht.lsig_valid = rx_vect1_leg.lsig_valid; rx_vect1->ht.length = rx_vect1_leg.ht_length; rx_vect1->ht.mcs = rx_vect1_leg.mcs; rx_vect1->ht.num_extn_ss = rx_vect1_leg.num_extn_ss; rx_vect1->ht.short_gi = rx_vect1_leg.short_gi; rx_vect1->ht.smoothing = rx_vect1_leg.smoothing; rx_vect1->ht.sounding = rx_vect1_leg.sounding; rx_vect1->ht.stbc = rx_vect1_leg.stbc; break; case FORMATMOD_VHT: rx_vect1->vht.beamformed = !rx_vect1_leg.smoothing; rx_vect1->vht.fec = rx_vect1_leg.fec_coding; rx_vect1->vht.length = rx_vect1_leg.ht_length | rx_vect1_leg._ht_length << 8; rx_vect1->vht.mcs = rx_vect1_leg.mcs & 0x0F; rx_vect1->vht.nss = rx_vect1_leg.stbc ? rx_vect1_leg.n_sts/2 : rx_vect1_leg.n_sts; rx_vect1->vht.doze_not_allowed = rx_vect1_leg.doze_not_allowed; rx_vect1->vht.short_gi = rx_vect1_leg.short_gi; rx_vect1->vht.sounding = rx_vect1_leg.sounding; rx_vect1->vht.stbc = rx_vect1_leg.stbc; rx_vect1->vht.group_id = rx_vect1_leg.group_id; rx_vect1->vht.partial_aid = rx_vect1_leg.partial_aid; rx_vect1->vht.first_user = rx_vect1_leg.first_user; break; } if (!rx_vect2) return; // Copy the received vector 2 locally memcpy(&rx_vect2_leg, rx_vect2, sizeof(struct rx_vector_2_old)); // Reset it memset(rx_vect2, 0, sizeof(struct rx_vector_2)); rx_vect2->rcpi1 = rx_vect2_leg.rcpi; rx_vect2->rcpi2 = rx_vect2_leg.rcpi; rx_vect2->rcpi3 = rx_vect2_leg.rcpi; rx_vect2->rcpi4 = rx_vect2_leg.rcpi; rx_vect2->evm1 = rx_vect2_leg.evm1; rx_vect2->evm2 = rx_vect2_leg.evm2; rx_vect2->evm3 = rx_vect2_leg.evm3; rx_vect2->evm4 = rx_vect2_leg.evm4; } /** * rwnx_rx_statistic - save some statistics about received frames * * @rwnx_hw: main driver data. * @hw_rxhdr: Rx Hardware descriptor of the received frame. * @sta: STA that sent the frame. */ static void rwnx_rx_statistic(struct rwnx_hw *rwnx_hw, struct hw_rxhdr *hw_rxhdr, struct rwnx_sta *sta) { #if 1//def CONFIG_RWNX_DEBUGFS struct rwnx_stats *stats = &rwnx_hw->stats; struct rwnx_rx_rate_stats *rate_stats = &sta->stats.rx_rate; struct rx_vector_1 *rxvect = &hw_rxhdr->hwvect.rx_vect1; int mpdu, ampdu, mpdu_prev, rate_idx; /* save complete hwvect */ sta->stats.last_rx = hw_rxhdr->hwvect; /* update ampdu rx stats */ mpdu = hw_rxhdr->hwvect.mpdu_cnt; ampdu = hw_rxhdr->hwvect.ampdu_cnt; mpdu_prev = stats->ampdus_rx_map[ampdu]; if (mpdu_prev < mpdu) { stats->ampdus_rx_miss += mpdu - mpdu_prev - 1; } else { stats->ampdus_rx[mpdu_prev]++; } stats->ampdus_rx_map[ampdu] = mpdu; /* update rx rate statistic */ if (!rate_stats->size) return; if (rxvect->format_mod > FORMATMOD_NON_HT_DUP_OFDM) { int mcs; int bw = rxvect->ch_bw; int sgi; int nss; switch (rxvect->format_mod) { case FORMATMOD_HT_MF: case FORMATMOD_HT_GF: mcs = rxvect->ht.mcs % 8; nss = rxvect->ht.mcs / 8; sgi = rxvect->ht.short_gi; rate_idx = N_CCK + N_OFDM + nss * 32 + mcs * 4 + bw * 2 + sgi; break; case FORMATMOD_VHT: mcs = rxvect->vht.mcs; nss = rxvect->vht.nss; sgi = rxvect->vht.short_gi; rate_idx = N_CCK + N_OFDM + N_HT + nss * 80 + mcs * 8 + bw * 2 + sgi; break; case FORMATMOD_HE_SU: mcs = rxvect->he.mcs; nss = rxvect->he.nss; sgi = rxvect->he.gi_type; rate_idx = N_CCK + N_OFDM + N_HT + N_VHT + nss * 144 + mcs * 12 + bw * 3 + sgi; break; default: mcs = rxvect->he.mcs; nss = rxvect->he.nss; sgi = rxvect->he.gi_type; rate_idx = N_CCK + N_OFDM + N_HT + N_VHT + N_HE_SU + nss * 216 + mcs * 18 + rxvect->he.ru_size * 3 + sgi; break; } } else { int idx = legrates_lut[rxvect->leg_rate]; if (idx < 4) { rate_idx = idx * 2 + rxvect->pre_type; } else { rate_idx = N_CCK + idx - 4; } } if (rate_idx < rate_stats->size) { if (!rate_stats->table[rate_idx]) rate_stats->rate_cnt++; rate_stats->table[rate_idx]++; rate_stats->cpt++; } else { wiphy_err(rwnx_hw->wiphy, "RX: Invalid index conversion => %d/%d\n", rate_idx, rate_stats->size); } #endif } /** * rwnx_rx_data_skb - Process one data frame * * @rwnx_hw: main driver data * @rwnx_vif: vif that received the buffer * @skb: skb received * @rxhdr: HW rx descriptor * @return: true if buffer has been forwarded to upper layer * * If buffer is amsdu , it is first split into a list of skb. * Then each skb may be: * - forwarded to upper layer * - resent on wireless interface * * When vif is a STA interface, every skb is only forwarded to upper layer. * When vif is an AP interface, multicast skb are forwarded and resent, whereas * skb for other BSS's STA are only resent. */ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)) #define RAISE_RX_SOFTIRQ() \ cpu_raise_softirq(smp_processor_id(), NET_RX_SOFTIRQ) #endif /* LINUX_VERSION_CODE */ void rwnx_rx_data_skb_resend(struct rwnx_hw *rwnx_hw, struct rwnx_vif *rwnx_vif, struct sk_buff *skb, struct hw_rxhdr *rxhdr) { struct sk_buff *rx_skb = skb; const struct ethhdr *eth; struct sk_buff *skb_copy; rx_skb->dev = rwnx_vif->ndev; skb_reset_mac_header(rx_skb); eth = eth_hdr(rx_skb); //printk("resend\n"); /* resend pkt on wireless interface */ /* always need to copy buffer when forward=0 to get enough headrom for tsdesc */ skb_copy = skb_copy_expand(rx_skb, sizeof(struct rwnx_txhdr) + RWNX_SWTXHDR_ALIGN_SZ + 3 + 24 + 8, 0, GFP_ATOMIC); if (skb_copy) { int res; skb_copy->protocol = htons(ETH_P_802_3); skb_reset_network_header(skb_copy); skb_reset_mac_header(skb_copy); rwnx_vif->is_resending = true; res = dev_queue_xmit(skb_copy); rwnx_vif->is_resending = false; /* note: buffer is always consummed by dev_queue_xmit */ if (res == NET_XMIT_DROP) { rwnx_vif->net_stats.rx_dropped++; rwnx_vif->net_stats.tx_dropped++; } else if (res != NET_XMIT_SUCCESS) { netdev_err(rwnx_vif->ndev, "Failed to re-send buffer to driver (res=%d)", res); rwnx_vif->net_stats.tx_errors++; } } else { netdev_err(rwnx_vif->ndev, "Failed to copy skb"); } } static void rwnx_rx_data_skb_forward(struct rwnx_hw *rwnx_hw, struct rwnx_vif *rwnx_vif, struct sk_buff *skb, struct hw_rxhdr *rxhdr) { struct sk_buff *rx_skb; rx_skb = skb; rx_skb->dev = rwnx_vif->ndev; skb_reset_mac_header(rx_skb); #ifdef CONFIG_BR_SUPPORT void *br_port = NULL; if (1) {//(check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_ADHOC_STATE) == _TRUE) { /* Insert NAT2.5 RX here! */ #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35)) br_port = rwnx_vif->ndev->br_port; #else rcu_read_lock(); br_port = rcu_dereference(rwnx_vif->ndev->rx_handler_data); rcu_read_unlock(); #endif if (br_port) { int nat25_handle_frame(struct rwnx_vif *vif, struct sk_buff *skb); if (nat25_handle_frame(rwnx_vif, rx_skb) == -1) { /* priv->ext_stats.rx_data_drops++; */ /* DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n"); */ /* return FAIL; */ } } } #endif /* CONFIG_BR_SUPPORT */ /* Update statistics */ rwnx_vif->net_stats.rx_packets++; rwnx_vif->net_stats.rx_bytes += rx_skb->len; //printk("forward\n"); rx_skb->protocol = eth_type_trans(rx_skb, rwnx_vif->ndev); memset(rx_skb->cb, 0, sizeof(rx_skb->cb)); REG_SW_SET_PROFILING(rwnx_hw, SW_PROF_IEEE80211RX); #ifdef CONFIG_RX_NETIF_RECV_SKB //modify by aic local_bh_disable(); netif_receive_skb(rx_skb); local_bh_enable(); #else if (in_interrupt()) { netif_rx(rx_skb); } else { /* * If the receive is not processed inside an ISR, the softirqd must be woken explicitly to service the NET_RX_SOFTIRQ. * * In 2.6 kernels, this is handledby netif_rx_ni(), but in earlier kernels, we need to do it manually. */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) netif_rx_ni(rx_skb); #else ulong flags; netif_rx(rx_skb); local_irq_save(flags); RAISE_RX_SOFTIRQ(); local_irq_restore(flags); #endif } #endif REG_SW_CLEAR_PROFILING(rwnx_hw, SW_PROF_IEEE80211RX); rwnx_hw->stats.last_rx = jiffies; } static bool rwnx_rx_data_skb(struct rwnx_hw *rwnx_hw, struct rwnx_vif *rwnx_vif, struct sk_buff *skb, struct hw_rxhdr *rxhdr) { struct sk_buff_head list; struct sk_buff *rx_skb; bool amsdu = rxhdr->flags_is_amsdu; bool resend = false, forward = true; skb->dev = rwnx_vif->ndev; __skb_queue_head_init(&list); if (amsdu) { int count; ieee80211_amsdu_to_8023s(skb, &list, rwnx_vif->ndev->dev_addr, RWNX_VIF_TYPE(rwnx_vif), 0, NULL, NULL); count = skb_queue_len(&list); if (count > ARRAY_SIZE(rwnx_hw->stats.amsdus_rx)) count = ARRAY_SIZE(rwnx_hw->stats.amsdus_rx); rwnx_hw->stats.amsdus_rx[count - 1]++; } else { rwnx_hw->stats.amsdus_rx[0]++; __skb_queue_head(&list, skb); } if (((RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_AP) || (RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_AP_VLAN) || (RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_P2P_GO)) && !(rwnx_vif->ap.flags & RWNX_AP_ISOLATE)) { const struct ethhdr *eth; rx_skb = skb_peek(&list); skb_reset_mac_header(rx_skb); eth = eth_hdr(rx_skb); if (unlikely(is_multicast_ether_addr(eth->h_dest))) { /* broadcast pkt need to be forwared to upper layer and resent on wireless interface */ resend = true; } else { /* unicast pkt for STA inside the BSS, no need to forward to upper layer simply resend on wireless interface */ if (rxhdr->flags_dst_idx != RWNX_INVALID_STA) { struct rwnx_sta *sta = &rwnx_hw->sta_table[rxhdr->flags_dst_idx]; if (sta->valid && (sta->vlan_idx == rwnx_vif->vif_index)) { forward = false; resend = true; } } } } else if (RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_MESH_POINT) { const struct ethhdr *eth; rx_skb = skb_peek(&list); skb_reset_mac_header(rx_skb); eth = eth_hdr(rx_skb); if (!is_multicast_ether_addr(eth->h_dest)) { /* unicast pkt for STA inside the BSS, no need to forward to upper layer simply resend on wireless interface */ if (rxhdr->flags_dst_idx != RWNX_INVALID_STA) { forward = false; resend = true; } } } while (!skb_queue_empty(&list)) { rx_skb = __skb_dequeue(&list); /* resend pkt on wireless interface */ if (resend) { struct sk_buff *skb_copy; /* always need to copy buffer when forward=0 to get enough headrom for tsdesc */ skb_copy = skb_copy_expand(rx_skb, sizeof(struct rwnx_txhdr) + RWNX_SWTXHDR_ALIGN_SZ + 3 + 24 + 8, 0, GFP_ATOMIC); if (skb_copy) { int res; skb_copy->protocol = htons(ETH_P_802_3); skb_reset_network_header(skb_copy); skb_reset_mac_header(skb_copy); rwnx_vif->is_resending = true; res = dev_queue_xmit(skb_copy); rwnx_vif->is_resending = false; /* note: buffer is always consummed by dev_queue_xmit */ if (res == NET_XMIT_DROP) { rwnx_vif->net_stats.rx_dropped++; rwnx_vif->net_stats.tx_dropped++; } else if (res != NET_XMIT_SUCCESS) { netdev_err(rwnx_vif->ndev, "Failed to re-send buffer to driver (res=%d)", res); rwnx_vif->net_stats.tx_errors++; } } else { netdev_err(rwnx_vif->ndev, "Failed to copy skb"); } } /* forward pkt to upper layer */ if (forward) { #ifdef CONFIG_BR_SUPPORT void *br_port = NULL; if (1) {//(check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_ADHOC_STATE) == _TRUE) { /* Insert NAT2.5 RX here! */ #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35)) br_port = rwnx_vif->ndev->br_port; #else rcu_read_lock(); br_port = rcu_dereference(rwnx_vif->ndev->rx_handler_data); rcu_read_unlock(); #endif if (br_port) { int nat25_handle_frame(struct rwnx_vif *vif, struct sk_buff *skb); if (nat25_handle_frame(rwnx_vif, rx_skb) == -1) { /* priv->ext_stats.rx_data_drops++; */ /* DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n"); */ /* return FAIL; */ } } } #endif /* CONFIG_BR_SUPPORT */ /* Update statistics */ rwnx_vif->net_stats.rx_packets++; rwnx_vif->net_stats.rx_bytes += rx_skb->len; rx_skb->protocol = eth_type_trans(rx_skb, rwnx_vif->ndev); #ifdef AICWF_ARP_OFFLOAD if (RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_STATION || RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_P2P_CLIENT) arpoffload_proc(rx_skb, rwnx_vif); #endif memset(rx_skb->cb, 0, sizeof(rx_skb->cb)); REG_SW_SET_PROFILING(rwnx_hw, SW_PROF_IEEE80211RX); #ifdef CONFIG_RX_NETIF_RECV_SKB //modify by aic local_bh_disable(); netif_receive_skb(rx_skb); local_bh_enable(); #else if (in_interrupt()) { netif_rx(rx_skb); } else { /* * If the receive is not processed inside an ISR, the softirqd must be woken explicitly to service the NET_RX_SOFTIRQ. * * In 2.6 kernels, this is handledby netif_rx_ni(), but in earlier kernels, we need to do it manually. */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) netif_rx_ni(rx_skb); #else ulong flags; netif_rx(rx_skb); local_irq_save(flags); RAISE_RX_SOFTIRQ(); local_irq_restore(flags); #endif } #endif REG_SW_CLEAR_PROFILING(rwnx_hw, SW_PROF_IEEE80211RX); rwnx_hw->stats.last_rx = jiffies; } } return forward; } #ifdef CONFIG_HE_FOR_OLD_KERNEL #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)) const u8 *cfg80211_find_ie_match(u8 eid, const u8 *ies, int len, const u8 *match, int match_len, int match_offset) { const struct element *elem; /* match_offset can't be smaller than 2, unless match_len is * zero, in which case match_offset must be zero as well. */ if (WARN_ON((match_len && match_offset < 2) || (!match_len && match_offset))) return NULL; for_each_element_id(elem, eid, ies, len) { if (elem->datalen >= match_offset - 2 + match_len && !memcmp(elem->data + match_offset - 2, match, match_len)) return (void *)elem; } return NULL; } #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)) static inline const u8 *cfg80211_find_ext_ie(u8 ext_eid, const u8* ies, int len) { return cfg80211_find_ie_match(WLAN_EID_EXTENSION, ies, len, &ext_eid, 1, 2); } #endif #endif /** * rwnx_rx_mgmt - Process one 802.11 management frame * * @rwnx_hw: main driver data * @rwnx_vif: vif to upload the buffer to * @skb: skb received * @rxhdr: HW rx descriptor * * Forward the management frame to a given interface. */ static void rwnx_rx_mgmt(struct rwnx_hw *rwnx_hw, struct rwnx_vif *rwnx_vif, struct sk_buff *skb, struct hw_rxhdr *hw_rxhdr) { struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; struct rx_vector_1 *rxvect = &hw_rxhdr->hwvect.rx_vect1; //printk("rwnx_rx_mgmt\n"); #if (defined CONFIG_HE_FOR_OLD_KERNEL) || (defined CONFIG_VHT_FOR_OLD_KERNEL) struct aic_sta *sta = &rwnx_hw->aic_table[rwnx_vif->ap.aic_index]; const u8* ie; u32 len; if (ieee80211_is_assoc_req(mgmt->frame_control) && rwnx_vif->wdev.iftype == NL80211_IFTYPE_AP) { printk("ASSOC_REQ: sta_idx %d MAC %pM\n", rwnx_vif->ap.aic_index, mgmt->sa); sta->sta_idx = rwnx_vif->ap.aic_index; len = skb->len - (mgmt->u.assoc_req.variable - skb->data); #ifdef CONFIG_HE_FOR_OLD_KERNEL struct ieee80211_he_cap_elem *he; ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, mgmt->u.assoc_req.variable, len); if (ie && ie[1] >= sizeof(*he) + 1) { printk("assoc_req: find he\n"); sta->he = true; } else { printk("assoc_req: no find he\n"); sta->he = false; } #endif #ifdef CONFIG_VHT_FOR_OLD_KERNEL struct ieee80211_vht_cap *vht; ie = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, mgmt->u.assoc_req.variable, len); if (ie && ie[1] >= sizeof(*vht)) { printk("assoc_req: find vht\n"); sta->vht = true; } else { printk("assoc_req: no find vht\n"); sta->vht = false; } #endif } #endif if (ieee80211_is_mgmt(mgmt->frame_control) && (skb->len <= 24 || skb->len > 768)) { printk("mgmt err\n"); return; } if (ieee80211_is_beacon(mgmt->frame_control)) { if ((RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_MESH_POINT) && hw_rxhdr->flags_new_peer) { #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0)) cfg80211_notify_new_peer_candidate(rwnx_vif->ndev, mgmt->sa, mgmt->u.beacon.variable, skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable), GFP_ATOMIC); #else /* TODO: the value of parameter sig_dbm need to be confirmed */ rwnx_cfg80211_notify_new_peer_candidate(rwnx_vif->ndev, mgmt->sa, mgmt->u.beacon.variable, skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable), rxvect->rssi1, GFP_ATOMIC); #endif } else { rwnx_cfg80211_report_obss_beacon(rwnx_hw->wiphy, skb->data, skb->len, hw_rxhdr->phy_info.phy_prim20_freq, rxvect->rssi1); } } else if ((ieee80211_is_deauth(mgmt->frame_control) || ieee80211_is_disassoc(mgmt->frame_control)) && (mgmt->u.deauth.reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA || mgmt->u.deauth.reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0) // TODO: process unprot mgmt cfg80211_rx_unprot_mlme_mgmt(rwnx_vif->ndev, skb->data, skb->len); #endif } else if ((RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_STATION) && (ieee80211_is_action(mgmt->frame_control) && (mgmt->u.action.category == 6))) { struct cfg80211_ft_event_params ft_event; ft_event.target_ap = (uint8_t *)&mgmt->u.action + ETH_ALEN + 2; ft_event.ies = (uint8_t *)&mgmt->u.action + ETH_ALEN * 2 + 2; ft_event.ies_len = skb->len - (ft_event.ies - (uint8_t *)mgmt); ft_event.ric_ies = NULL; ft_event.ric_ies_len = 0; cfg80211_ft_event(rwnx_vif->ndev, &ft_event); } else { cfg80211_rx_mgmt(&rwnx_vif->wdev, hw_rxhdr->phy_info.phy_prim20_freq, rxvect->rssi1, skb->data, skb->len, 0); } } /** * rwnx_rx_mgmt_any - Process one 802.11 management frame * * @rwnx_hw: main driver data * @skb: skb received * @rxhdr: HW rx descriptor * * Process the management frame and free the corresponding skb. * If vif is not specified in the rx descriptor, the the frame is uploaded * on all active vifs. */ static void rwnx_rx_mgmt_any(struct rwnx_hw *rwnx_hw, struct sk_buff *skb, struct hw_rxhdr *hw_rxhdr) { struct rwnx_vif *rwnx_vif; int vif_idx = hw_rxhdr->flags_vif_idx; #ifdef CREATE_TRACE_POINTS trace_mgmt_rx(hw_rxhdr->phy_info.phy_prim20_freq, vif_idx, hw_rxhdr->flags_sta_idx, (struct ieee80211_mgmt *)skb->data); #endif if (vif_idx == RWNX_INVALID_VIF) { list_for_each_entry(rwnx_vif, &rwnx_hw->vifs, list) { if (!rwnx_vif->up) continue; rwnx_rx_mgmt(rwnx_hw, rwnx_vif, skb, hw_rxhdr); } } else { rwnx_vif = rwnx_rx_get_vif(rwnx_hw, vif_idx); if (rwnx_vif) rwnx_rx_mgmt(rwnx_hw, rwnx_vif, skb, hw_rxhdr); } dev_kfree_skb(skb); } /** * rwnx_rx_rtap_hdrlen - Return radiotap header length * * @rxvect: Rx vector used to fill the radiotap header * @has_vend_rtap: boolean indicating if vendor specific data is present * * Compute the length of the radiotap header based on @rxvect and vendor * specific data (if any). */ static u8 rwnx_rx_rtap_hdrlen(struct rx_vector_1 *rxvect, bool has_vend_rtap) { u8 rtap_len; /* Compute radiotap header length */ rtap_len = sizeof(struct ieee80211_radiotap_header) + 8; // Check for multiple antennas if (hweight32(rxvect->antenna_set) > 1) // antenna and antenna signal fields rtap_len += 4 * hweight8(rxvect->antenna_set); // TSFT if (!has_vend_rtap) { rtap_len = ALIGN(rtap_len, 8); rtap_len += 8; } // IEEE80211_HW_SIGNAL_DBM rtap_len++; // Check if single antenna if (hweight32(rxvect->antenna_set) == 1) rtap_len++; //Single antenna // padding for RX FLAGS rtap_len = ALIGN(rtap_len, 2); // Check for HT frames if ((rxvect->format_mod == FORMATMOD_HT_MF) || (rxvect->format_mod == FORMATMOD_HT_GF)) rtap_len += 3; // Check for AMPDU if (!(has_vend_rtap) && ((rxvect->format_mod >= FORMATMOD_VHT) || ((rxvect->format_mod > FORMATMOD_NON_HT_DUP_OFDM) && (rxvect->ht.aggregation)))) { rtap_len = ALIGN(rtap_len, 4); rtap_len += 8; } // Check for VHT frames if (rxvect->format_mod == FORMATMOD_VHT) { rtap_len = ALIGN(rtap_len, 2); rtap_len += 12; } // Check for HE frames if (rxvect->format_mod == FORMATMOD_HE_SU) { rtap_len = ALIGN(rtap_len, 2); rtap_len += sizeof(struct ieee80211_radiotap_he); } // Check for multiple antennas if (hweight32(rxvect->antenna_set) > 1) { // antenna and antenna signal fields rtap_len += 2 * hweight8(rxvect->antenna_set); } // Check for vendor specific data if (has_vend_rtap) { /* vendor presence bitmap */ rtap_len += 4; /* alignment for fixed 6-byte vendor data header */ rtap_len = ALIGN(rtap_len, 2); } return rtap_len; } /** * rwnx_rx_add_rtap_hdr - Add radiotap header to sk_buff * * @rwnx_hw: main driver data * @skb: skb received (will include the radiotap header) * @rxvect: Rx vector * @phy_info: Information regarding the phy * @hwvect: HW Info (NULL if vendor specific data is available) * @rtap_len: Length of the radiotap header * @vend_rtap_len: radiotap vendor length (0 if not present) * @vend_it_present: radiotap vendor present * * Builds a radiotap header and add it to @skb. */ static void rwnx_rx_add_rtap_hdr(struct rwnx_hw *rwnx_hw, struct sk_buff *skb, struct rx_vector_1 *rxvect, struct phy_channel_info_desc *phy_info, struct hw_vect *hwvect, int rtap_len, u8 vend_rtap_len, u32 vend_it_present) { struct ieee80211_radiotap_header *rtap; u8 *pos, rate_idx; __le32 *it_present; u32 it_present_val = 0; bool fec_coding = false; bool short_gi = false; bool stbc = false; bool aggregation = false; rtap = (struct ieee80211_radiotap_header *)skb_push(skb, rtap_len); memset((u8 *) rtap, 0, rtap_len); rtap->it_version = 0; rtap->it_pad = 0; rtap->it_len = cpu_to_le16(rtap_len + vend_rtap_len); it_present = &rtap->it_present; // Check for multiple antennas if (hweight32(rxvect->antenna_set) > 1) { int chain; unsigned long chains = rxvect->antenna_set; for_each_set_bit(chain, &chains, IEEE80211_MAX_CHAINS) { it_present_val |= BIT(IEEE80211_RADIOTAP_EXT) | BIT(IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE); put_unaligned_le32(it_present_val, it_present); it_present++; it_present_val = BIT(IEEE80211_RADIOTAP_ANTENNA) | BIT(IEEE80211_RADIOTAP_DBM_ANTSIGNAL); } } // Check if vendor specific data is present if (vend_rtap_len) { it_present_val |= BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE) | BIT(IEEE80211_RADIOTAP_EXT); put_unaligned_le32(it_present_val, it_present); it_present++; it_present_val = vend_it_present; } put_unaligned_le32(it_present_val, it_present); pos = (void *)(it_present + 1); // IEEE80211_RADIOTAP_TSFT if (hwvect) { rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT); // padding while ((pos - (u8 *)rtap) & 7) *pos++ = 0; put_unaligned_le64((((u64)le32_to_cpu(hwvect->tsf_hi) << 32) + (u64)le32_to_cpu(hwvect->tsf_lo)), pos); pos += 8; } // IEEE80211_RADIOTAP_FLAGS rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_FLAGS); if (hwvect && (!hwvect->frm_successful_rx)) *pos |= IEEE80211_RADIOTAP_F_BADFCS; if (!rxvect->pre_type && (rxvect->format_mod <= FORMATMOD_NON_HT_DUP_OFDM)) *pos |= IEEE80211_RADIOTAP_F_SHORTPRE; pos++; // IEEE80211_RADIOTAP_RATE // check for HT, VHT or HE frames if (rxvect->format_mod >= FORMATMOD_HE_SU) { rate_idx = rxvect->he.mcs; fec_coding = rxvect->he.fec; stbc = rxvect->he.stbc; aggregation = true; *pos = 0; } else if (rxvect->format_mod == FORMATMOD_VHT) { rate_idx = rxvect->vht.mcs; fec_coding = rxvect->vht.fec; short_gi = rxvect->vht.short_gi; stbc = rxvect->vht.stbc; aggregation = true; *pos = 0; } else if (rxvect->format_mod > FORMATMOD_NON_HT_DUP_OFDM) { rate_idx = rxvect->ht.mcs; fec_coding = rxvect->ht.fec; short_gi = rxvect->ht.short_gi; stbc = rxvect->ht.stbc; aggregation = rxvect->ht.aggregation; *pos = 0; } else { struct ieee80211_supported_band *band = rwnx_hw->wiphy->bands[phy_info->phy_band]; rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE); BUG_ON((rate_idx = legrates_lut[rxvect->leg_rate]) == -1); if (phy_info->phy_band == NL80211_BAND_5GHZ) rate_idx -= 4; /* rwnx_ratetable_5ghz[0].hw_value == 4 */ *pos = DIV_ROUND_UP(band->bitrates[rate_idx].bitrate, 5); } pos++; // IEEE80211_RADIOTAP_CHANNEL rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_CHANNEL); put_unaligned_le16(phy_info->phy_prim20_freq, pos); pos += 2; if (phy_info->phy_band == NL80211_BAND_5GHZ) put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ, pos); else if (rxvect->format_mod > FORMATMOD_NON_HT_DUP_OFDM) put_unaligned_le16(IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ, pos); else put_unaligned_le16(IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ, pos); pos += 2; if (hweight32(rxvect->antenna_set) == 1) { // IEEE80211_RADIOTAP_DBM_ANTSIGNAL rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL); *pos++ = rxvect->rssi1; // IEEE80211_RADIOTAP_ANTENNA rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_ANTENNA); *pos++ = rxvect->antenna_set; } // IEEE80211_RADIOTAP_LOCK_QUALITY is missing // IEEE80211_RADIOTAP_DB_ANTNOISE is missing // IEEE80211_RADIOTAP_RX_FLAGS rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RX_FLAGS); // 2 byte alignment if ((pos - (u8 *)rtap) & 1) *pos++ = 0; put_unaligned_le16(0, pos); //Right now, we only support fcs error (no RX_FLAG_FAILED_PLCP_CRC) pos += 2; // Check if HT if ((rxvect->format_mod == FORMATMOD_HT_MF) || (rxvect->format_mod == FORMATMOD_HT_GF)) { rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); *pos++ = IEEE80211_RADIOTAP_MCS_HAVE_MCS | IEEE80211_RADIOTAP_MCS_HAVE_GI | IEEE80211_RADIOTAP_MCS_HAVE_BW; *pos = 0; if (short_gi) *pos |= IEEE80211_RADIOTAP_MCS_SGI; if (rxvect->ch_bw == PHY_CHNL_BW_40) *pos |= IEEE80211_RADIOTAP_MCS_BW_40; if (rxvect->format_mod == FORMATMOD_HT_GF) *pos |= IEEE80211_RADIOTAP_MCS_FMT_GF; if (fec_coding) *pos |= IEEE80211_RADIOTAP_MCS_FEC_LDPC; #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) *pos++ |= stbc << 5; #else *pos++ |= stbc << IEEE80211_RADIOTAP_MCS_STBC_SHIFT; #endif *pos++ = rate_idx; } // check for HT or VHT frames if (aggregation && hwvect) { // 4 byte alignment while ((pos - (u8 *)rtap) & 3) pos++; rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_AMPDU_STATUS); put_unaligned_le32(hwvect->ampdu_cnt, pos); pos += 4; put_unaligned_le32(0, pos); pos += 4; } // Check for VHT frames if (rxvect->format_mod == FORMATMOD_VHT) { u16 vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; u8 vht_nss = rxvect->vht.nss + 1; rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT); if ((rxvect->ch_bw == PHY_CHNL_BW_160) && phy_info->phy_center2_freq) vht_details &= ~IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; put_unaligned_le16(vht_details, pos); pos += 2; // flags if (short_gi) *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; if (stbc) *pos |= IEEE80211_RADIOTAP_VHT_FLAG_STBC; pos++; // bandwidth if (rxvect->ch_bw == PHY_CHNL_BW_40) *pos++ = 1; if (rxvect->ch_bw == PHY_CHNL_BW_80) *pos++ = 4; else if ((rxvect->ch_bw == PHY_CHNL_BW_160) && phy_info->phy_center2_freq) *pos++ = 0; //80P80 else if (rxvect->ch_bw == PHY_CHNL_BW_160) *pos++ = 11; else // 20 MHz *pos++ = 0; // MCS/NSS *pos = (rate_idx << 4) | vht_nss; pos += 4; if (fec_coding) #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0) *pos |= 0x01; #else *pos |= IEEE80211_RADIOTAP_CODING_LDPC_USER0; #endif pos++; // group ID pos++; // partial_aid pos += 2; } // Check for HE frames if (rxvect->format_mod == FORMATMOD_HE_SU) { struct ieee80211_radiotap_he he; #define HE_PREP(f, val) cpu_to_le16(FIELD_PREP(IEEE80211_RADIOTAP_HE_##f, val)) #define D1_KNOWN(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_##f##_KNOWN) #define D2_KNOWN(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_##f##_KNOWN) he.data1 = D1_KNOWN(DATA_MCS) | D1_KNOWN(BSS_COLOR) | D1_KNOWN(BEAM_CHANGE) | D1_KNOWN(UL_DL) | D1_KNOWN(CODING) | D1_KNOWN(STBC) | D1_KNOWN(BW_RU_ALLOC) | D1_KNOWN(DOPPLER) | D1_KNOWN(DATA_DCM); he.data2 = D2_KNOWN(GI) | D2_KNOWN(TXBF); if (stbc) { he.data6 |= HE_PREP(DATA6_NSTS, 2); he.data3 |= HE_PREP(DATA3_STBC, 1); } else { he.data6 |= HE_PREP(DATA6_NSTS, rxvect->he.nss); } he.data3 |= HE_PREP(DATA3_BSS_COLOR, rxvect->he.bss_color); he.data3 |= HE_PREP(DATA3_BEAM_CHANGE, rxvect->he.beam_change); he.data3 |= HE_PREP(DATA3_UL_DL, rxvect->he.uplink_flag); he.data3 |= HE_PREP(DATA3_BSS_COLOR, rxvect->he.bss_color); he.data3 |= HE_PREP(DATA3_DATA_MCS, rxvect->he.mcs); he.data3 |= HE_PREP(DATA3_DATA_DCM, rxvect->he.dcm); he.data3 |= HE_PREP(DATA3_CODING, rxvect->he.fec); he.data5 |= HE_PREP(DATA5_GI, rxvect->he.gi_type); he.data5 |= HE_PREP(DATA5_TXBF, rxvect->he.beamformed); he.data5 |= HE_PREP(DATA5_LTF_SIZE, rxvect->he.he_ltf_type + 1); switch (rxvect->ch_bw) { case PHY_CHNL_BW_20: he.data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ); break; case PHY_CHNL_BW_40: he.data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ); break; case PHY_CHNL_BW_80: he.data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ); break; case PHY_CHNL_BW_160: he.data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ); break; default: WARN_ONCE(1, "Invalid SU BW %d\n", rxvect->ch_bw); } he.data6 |= HE_PREP(DATA6_DOPPLER, rxvect->he.doppler); /* ensure 2 byte alignment */ while ((pos - (u8 *)rtap) & 1) pos++; rtap->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_HE); memcpy(pos, &he, sizeof(he)); pos += sizeof(he); } // Rx Chains if (hweight32(rxvect->antenna_set) > 1) { int chain; unsigned long chains = rxvect->antenna_set; u8 rssis[4] = {rxvect->rssi1, rxvect->rssi1, rxvect->rssi1, rxvect->rssi1}; for_each_set_bit(chain, &chains, IEEE80211_MAX_CHAINS) { *pos++ = rssis[chain]; *pos++ = chain; } } } /** * rwnx_rx_monitor - Build radiotap header for skb an send it to netdev * * @rwnx_hw: main driver data * @rwnx_vif: vif that received the buffer * @skb: sk_buff received * @hw_rxhdr_ptr: Pointer to HW RX header * @rtap_len: Radiotap Header length * * Add radiotap header to the receved skb and send it to netdev */ static int rwnx_rx_monitor(struct rwnx_hw *rwnx_hw, struct rwnx_vif *rwnx_vif, struct sk_buff *skb, struct hw_rxhdr *hw_rxhdr_ptr, u8 rtap_len) { skb->dev = rwnx_vif->ndev; if (rwnx_vif->wdev.iftype != NL80211_IFTYPE_MONITOR) { netdev_err(rwnx_vif->ndev, "not a monitor vif\n"); return -1; } /* Add RadioTap Header */ rwnx_rx_add_rtap_hdr(rwnx_hw, skb, &hw_rxhdr_ptr->hwvect.rx_vect1, &hw_rxhdr_ptr->phy_info, &hw_rxhdr_ptr->hwvect, rtap_len, 0, 0); skb_reset_mac_header(skb); skb->ip_summed = CHECKSUM_UNNECESSARY; skb->pkt_type = PACKET_OTHERHOST; skb->protocol = htons(ETH_P_802_2); local_bh_disable(); netif_receive_skb(skb); local_bh_enable(); return 0; } #ifdef AICWF_ARP_OFFLOAD void arpoffload_proc(struct sk_buff *skb, struct rwnx_vif *rwnx_vif) { struct iphdr *iphead = (struct iphdr *)(skb->data); struct udphdr *udph; struct DHCPInfo *dhcph; if (skb->protocol == htons(ETH_P_IP)) { // IP if (iphead->protocol == IPPROTO_UDP) { // UDP udph = (struct udphdr *)((u8 *)iphead + (iphead->ihl << 2)); if ((udph->source == __constant_htons(SERVER_PORT)) && (udph->dest == __constant_htons(CLIENT_PORT))) { // DHCP offset/ack dhcph = (struct DHCPInfo *)((u8 *)udph + sizeof(struct udphdr)); if (dhcph->cookie == htonl(DHCP_MAGIC) && dhcph->op == 2 && !memcmp(dhcph->chaddr, rwnx_vif->ndev->dev_addr, 6)) { // match magic word u32 length = ntohs(udph->len) - sizeof(struct udphdr) - offsetof(struct DHCPInfo, options); u16 offset = 0; u8 *option = dhcph->options; while (option[offset] != DHCP_OPTION_END && offset < length) { if (option[offset] == DHCP_OPTION_MESSAGE_TYPE) { if (option[offset+2] == DHCP_ACK) { dhcped = 1; AICWFDBG(LOGINFO, "paired=%x, should=%x\n", rwnx_vif->sta.paired_cipher_type, WLAN_CIPHER_SUITE_CCMP); if (rwnx_vif->sta.paired_cipher_type == WLAN_CIPHER_SUITE_CCMP || \ rwnx_vif->sta.paired_cipher_type == WLAN_CIPHER_SUITE_AES_CMAC || \ ((rwnx_vif->sta.group_cipher_type == 0xff) && \ (rwnx_vif->sta.paired_cipher_type == 0xff))) rwnx_send_arpoffload_en_req(rwnx_vif->rwnx_hw, rwnx_vif, dhcph->yiaddr, 1); else rwnx_send_arpoffload_en_req(rwnx_vif->rwnx_hw, rwnx_vif, dhcph->yiaddr, 0); } } offset += 2 + option[offset+1]; } } } } } } #endif #ifdef AICWF_RX_REORDER void reord_rxframe_free(spinlock_t *lock, struct list_head *q, struct list_head *list) { spin_lock_bh(lock); list_add(list, q); spin_unlock_bh(lock); } struct recv_msdu *reord_rxframe_alloc(spinlock_t *lock, struct list_head *q) { struct recv_msdu *rxframe; spin_lock_bh(lock); if (list_empty(q)) { spin_unlock_bh(lock); return NULL; } rxframe = list_entry(q->next, struct recv_msdu, rxframe_list); list_del_init(q->next); spin_unlock_bh(lock); return rxframe; } struct reord_ctrl_info *reord_init_sta(struct aicwf_rx_priv *rx_priv, const u8 *mac_addr) { u8 i = 0; struct reord_ctrl *preorder_ctrl = NULL; struct reord_ctrl_info *reord_info; #ifdef AICWF_SDIO_SUPPORT struct aicwf_bus *bus_if = rx_priv->sdiodev->bus_if; #else struct aicwf_bus *bus_if = rx_priv->usbdev->bus_if; #endif if (bus_if->state == BUS_DOWN_ST || rx_priv == NULL) { AICWFDBG(LOGERROR, "bad stat!\n"); return NULL; } AICWFDBG(LOGINFO, "reord_init_sta:%pM\n", mac_addr); reord_info = kmalloc(sizeof(struct reord_ctrl_info), GFP_ATOMIC); if (!reord_info) return NULL; memcpy(reord_info->mac_addr, mac_addr, ETH_ALEN); for (i = 0; i < 8; i++) { preorder_ctrl = &reord_info->preorder_ctrl[i]; preorder_ctrl->enable = true; preorder_ctrl->ind_sn = 0xffff; preorder_ctrl->wsize_b = AICWF_REORDER_WINSIZE; preorder_ctrl->rx_priv = rx_priv; INIT_LIST_HEAD(&preorder_ctrl->reord_list); spin_lock_init(&preorder_ctrl->reord_list_lock); #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) init_timer(&preorder_ctrl->reord_timer); preorder_ctrl->reord_timer.data = (ulong) preorder_ctrl; preorder_ctrl->reord_timer.function = reord_timeout_handler; #else timer_setup(&preorder_ctrl->reord_timer, reord_timeout_handler, 0); #endif INIT_WORK(&preorder_ctrl->reord_timer_work, reord_timeout_worker); } return reord_info; } int reord_flush_tid(struct aicwf_rx_priv *rx_priv, struct sk_buff *skb, u8 tid) { struct reord_ctrl_info *reord_info; struct reord_ctrl *preorder_ctrl; struct rwnx_vif *rwnx_vif = (struct rwnx_vif *)rx_priv->rwnx_vif; struct ethhdr *eh = (struct ethhdr *)(skb->data); u8 *mac; unsigned long flags; u8 found = 0; struct list_head *phead, *plist; struct recv_msdu *prframe; int ret; if ((rwnx_vif->wdev.iftype == NL80211_IFTYPE_STATION) || (rwnx_vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)) mac = eh->h_dest; else if ((rwnx_vif->wdev.iftype == NL80211_IFTYPE_AP) || (rwnx_vif->wdev.iftype == NL80211_IFTYPE_P2P_GO)) mac = eh->h_source; else { AICWFDBG(LOGERROR, "error mode:%d!\n", rwnx_vif->wdev.iftype); dev_kfree_skb(skb); return -1; } spin_lock_bh(&rx_priv->stas_reord_lock); list_for_each_entry(reord_info, &rx_priv->stas_reord_list, list) { if (!memcmp(mac, reord_info->mac_addr, ETH_ALEN)) { found = 1; preorder_ctrl = &reord_info->preorder_ctrl[tid]; break; } } if (!found) { spin_unlock_bh(&rx_priv->stas_reord_lock); return 0; } spin_unlock_bh(&rx_priv->stas_reord_lock); if (preorder_ctrl->enable == false) return 0; spin_lock_irqsave(&preorder_ctrl->reord_list_lock, flags); phead = &preorder_ctrl->reord_list; while (1) { if (list_empty(phead)) { break; } plist = phead->next; prframe = list_entry(plist, struct recv_msdu, reord_pending_list); reord_single_frame_ind(rx_priv, prframe); list_del_init(&(prframe->reord_pending_list)); } AICWFDBG(LOGINFO, "flush:tid=%d", tid); preorder_ctrl->enable = false; spin_unlock_irqrestore(&preorder_ctrl->reord_list_lock, flags); if (timer_pending(&preorder_ctrl->reord_timer)) ret = del_timer_sync(&preorder_ctrl->reord_timer); cancel_work_sync(&preorder_ctrl->reord_timer_work); return 0; } void reord_deinit_sta(struct aicwf_rx_priv *rx_priv, struct reord_ctrl_info *reord_info) { u8 i = 0; unsigned long flags; struct reord_ctrl *preorder_ctrl = NULL; int ret; if (rx_priv == NULL) { txrx_err("bad rx_priv!\n"); return; } for (i = 0; i < 8; i++) { struct recv_msdu *req, *next; preorder_ctrl = &reord_info->preorder_ctrl[i]; spin_lock_irqsave(&preorder_ctrl->reord_list_lock, flags); list_for_each_entry_safe(req, next, &preorder_ctrl->reord_list, reord_pending_list) { list_del_init(&req->reord_pending_list); if (req->pkt != NULL) dev_kfree_skb(req->pkt); req->pkt = NULL; reord_rxframe_free(&rx_priv->freeq_lock, &rx_priv->rxframes_freequeue, &req->rxframe_list); } spin_unlock_irqrestore(&preorder_ctrl->reord_list_lock, flags); if (timer_pending(&preorder_ctrl->reord_timer)) { ret = del_timer_sync(&preorder_ctrl->reord_timer); } cancel_work_sync(&preorder_ctrl->reord_timer_work); } list_del(&reord_info->list); kfree(reord_info); } int reord_single_frame_ind(struct aicwf_rx_priv *rx_priv, struct recv_msdu *prframe) { struct list_head *rxframes_freequeue = NULL; struct sk_buff *skb = NULL; struct rwnx_vif *rwnx_vif = (struct rwnx_vif *)rx_priv->rwnx_vif; rxframes_freequeue = &rx_priv->rxframes_freequeue; skb = prframe->pkt; #ifdef CONFIG_BR_SUPPORT void *br_port = NULL; if (1) {//(check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_ADHOC_STATE) == _TRUE) { /* Insert NAT2.5 RX here! */ #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35)) br_port = rwnx_vif->ndev->br_port; #else rcu_read_lock(); br_port = rcu_dereference(rwnx_vif->ndev->rx_handler_data); rcu_read_unlock(); #endif if (br_port) { int nat25_handle_frame(struct rwnx_vif *vif, struct sk_buff *skb); if (nat25_handle_frame(rwnx_vif, skb) == -1) { /* priv->ext_stats.rx_data_drops++; */ /* DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n"); */ /* return FAIL; */ } } } #endif /* CONFIG_BR_SUPPORT */ if (skb == NULL) { txrx_err("skb is NULL\n"); return -1; } if(!prframe->forward) { //printk("single: %d not forward: drop\n", prframe->seq_num); dev_kfree_skb(skb); prframe->pkt = NULL; reord_rxframe_free(&rx_priv->freeq_lock, rxframes_freequeue, &prframe->rxframe_list); return 0; } skb->data = prframe->rx_data; skb_set_tail_pointer(skb, prframe->len); skb->len = prframe->len; rwnx_vif->net_stats.rx_packets++; rwnx_vif->net_stats.rx_bytes += skb->len; //printk("netif sn=%d, len=%d\n", precv_frame->attrib.seq_num, skb->len); skb->dev = rwnx_vif->ndev; skb->protocol = eth_type_trans(skb, rwnx_vif->ndev); #ifdef AICWF_ARP_OFFLOAD if (RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_STATION || RWNX_VIF_TYPE(rwnx_vif) == NL80211_IFTYPE_P2P_CLIENT) { arpoffload_proc(skb, rwnx_vif); } #endif memset(skb->cb, 0, sizeof(skb->cb)); #ifdef CONFIG_RX_NETIF_RECV_SKB//AIDEN test local_bh_disable(); netif_receive_skb(skb); local_bh_enable(); #else if (in_interrupt()) { netif_rx(skb); } else { /* * If the receive is not processed inside an ISR, the softirqd must be woken explicitly to service the NET_RX_SOFTIRQ. * * In 2.6 kernels, this is handledby netif_rx_ni(), but in earlier kernels, we need to do it manually. */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) netif_rx_ni(skb); #else ulong flags; netif_rx(skb); local_irq_save(flags); RAISE_RX_SOFTIRQ(); local_irq_restore(flags); #endif } #endif//CONFIG_RX_NETIF_RECV_SKB //rwnx_vif->net_stats.rx_packets++; //rwnx_vif->net_stats.rx_bytes += skb->len; prframe->pkt = NULL; reord_rxframe_free(&rx_priv->freeq_lock, rxframes_freequeue, &prframe->rxframe_list); return 0; } bool reord_rxframes_process(struct aicwf_rx_priv *rx_priv, struct reord_ctrl *preorder_ctrl, int bforced) { struct list_head *phead, *plist; struct recv_msdu *prframe; bool bPktInBuf = false; if (bforced == true) { phead = &preorder_ctrl->reord_list; if (list_empty(phead)) { return false; } plist = phead->next; prframe = list_entry(plist, struct recv_msdu, reord_pending_list); preorder_ctrl->ind_sn = prframe->seq_num; } phead = &preorder_ctrl->reord_list; if (list_empty(phead)) { return bPktInBuf; } list_for_each_entry(prframe, phead, reord_pending_list) { if (!SN_LESS(preorder_ctrl->ind_sn, prframe->seq_num)) { if (SN_EQUAL(preorder_ctrl->ind_sn, prframe->seq_num)) { preorder_ctrl->ind_sn = (preorder_ctrl->ind_sn + 1) & 0xFFF; } } else { bPktInBuf = true; break; } } return bPktInBuf; } void reord_rxframes_ind(struct aicwf_rx_priv *rx_priv, struct reord_ctrl *preorder_ctrl) { struct list_head *phead, *plist; struct recv_msdu *prframe; phead = &preorder_ctrl->reord_list; while (1) { //spin_lock_bh(&preorder_ctrl->reord_list_lock); if (list_empty(phead)) { // spin_unlock_bh(&preorder_ctrl->reord_list_lock); break; } plist = phead->next; prframe = list_entry(plist, struct recv_msdu, reord_pending_list); if (!SN_LESS(preorder_ctrl->ind_sn, prframe->seq_num)) { list_del_init(&(prframe->reord_pending_list)); // spin_unlock_bh(&preorder_ctrl->reord_list_lock); reord_single_frame_ind(rx_priv, prframe); } else { // spin_unlock_bh(&preorder_ctrl->reord_list_lock); break; } } } int reorder_timeout = REORDER_UPDATE_TIME; module_param(reorder_timeout, int, 0660); #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) void reord_timeout_handler (ulong data) #else void reord_timeout_handler (struct timer_list *t) #endif { #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) struct reord_ctrl *preorder_ctrl = (struct reord_ctrl *)data; #else struct reord_ctrl *preorder_ctrl = from_timer(preorder_ctrl, t, reord_timer); #endif #if 0 //AIDEN struct aicwf_rx_priv *rx_priv = preorder_ctrl->rx_priv; if (reord_rxframes_process(rx_priv, preorder_ctrl, true) == true) { mod_timer(&preorder_ctrl->reord_timer, jiffies + msecs_to_jiffies(REORDER_UPDATE_TIME)); } #endif if (!work_pending(&preorder_ctrl->reord_timer_work)) schedule_work(&preorder_ctrl->reord_timer_work); } void reord_timeout_worker(struct work_struct *work) { struct reord_ctrl *preorder_ctrl = container_of(work, struct reord_ctrl, reord_timer_work); struct aicwf_rx_priv *rx_priv = preorder_ctrl->rx_priv; spin_lock_bh(&preorder_ctrl->reord_list_lock); #if 1//AIDEN if (reord_rxframes_process(rx_priv, preorder_ctrl, true)==true) { mod_timer(&preorder_ctrl->reord_timer, jiffies + msecs_to_jiffies(reorder_timeout/*REORDER_UPDATE_TIME*/)); } #endif reord_rxframes_ind(rx_priv, preorder_ctrl); spin_unlock_bh(&preorder_ctrl->reord_list_lock); return ; } int reord_process_unit(struct aicwf_rx_priv *rx_priv, struct sk_buff *skb, u16 seq_num, u8 tid, u8 forward) { int ret = 0; u8 *mac; struct recv_msdu *pframe; struct reord_ctrl *preorder_ctrl; struct reord_ctrl_info *reord_info; struct rwnx_vif *rwnx_vif = (struct rwnx_vif *)rx_priv->rwnx_vif; struct ethhdr *eh = (struct ethhdr *)(skb->data); u8 *da = eh->h_dest; u8 is_mcast = ((*da) & 0x01) ? 1 : 0; if (rwnx_vif == NULL || skb->len <= 14) { dev_kfree_skb(skb); return -1; } pframe = reord_rxframe_alloc(&rx_priv->freeq_lock, &rx_priv->rxframes_freequeue); if (!pframe) { dev_kfree_skb(skb); return -1; } INIT_LIST_HEAD(&pframe->reord_pending_list); pframe->seq_num = seq_num; pframe->tid = tid; pframe->rx_data = skb->data; pframe->len = skb->len; pframe->pkt = skb; pframe->forward = forward; preorder_ctrl = pframe->preorder_ctrl; if ((ntohs(eh->h_proto) == ETH_P_PAE) || is_mcast) return reord_single_frame_ind(rx_priv, pframe); if ((rwnx_vif->wdev.iftype == NL80211_IFTYPE_STATION) || (rwnx_vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)) mac = eh->h_dest; else if ((rwnx_vif->wdev.iftype == NL80211_IFTYPE_AP) || (rwnx_vif->wdev.iftype == NL80211_IFTYPE_P2P_GO)) mac = eh->h_source; else { dev_kfree_skb(skb); return -1; } spin_lock_bh(&rx_priv->stas_reord_lock); list_for_each_entry(reord_info, &rx_priv->stas_reord_list, list) { if (!memcmp(mac, reord_info->mac_addr, ETH_ALEN)) { preorder_ctrl = &reord_info->preorder_ctrl[pframe->tid]; break; } } if (&reord_info->list == &rx_priv->stas_reord_list) { reord_info = reord_init_sta(rx_priv, mac); if (!reord_info) { spin_unlock_bh(&rx_priv->stas_reord_lock); dev_kfree_skb(skb); return -1; } list_add_tail(&reord_info->list, &rx_priv->stas_reord_list); preorder_ctrl = &reord_info->preorder_ctrl[pframe->tid]; } else { if (preorder_ctrl->enable == false) { preorder_ctrl->enable = true; preorder_ctrl->ind_sn = 0xffff; preorder_ctrl->wsize_b = AICWF_REORDER_WINSIZE; preorder_ctrl->rx_priv = rx_priv; } } spin_unlock_bh(&rx_priv->stas_reord_lock); if (preorder_ctrl->enable == false) { spin_lock_bh(&preorder_ctrl->reord_list_lock); preorder_ctrl->ind_sn = pframe->seq_num; reord_single_frame_ind(rx_priv, pframe); preorder_ctrl->ind_sn = (preorder_ctrl->ind_sn + 1)%4096; spin_unlock_bh(&rx_priv->stas_reord_lock); return 0; } spin_lock_bh(&preorder_ctrl->reord_list_lock); if (reord_need_check(preorder_ctrl, pframe->seq_num)) { if(pframe->rx_data[42] == 0x80){//this is rtp package if(pframe->seq_num == preorder_ctrl->ind_sn){ //printk("%s pframe->seq_num1:%d \r\n", __func__, pframe->seq_num); reord_single_frame_ind(rx_priv, pframe);//not need to reorder }else{ printk("%s free pframe->seq_num:%d \r\n", __func__, pframe->seq_num); if (pframe->pkt){ dev_kfree_skb(pframe->pkt); pframe->pkt = NULL; } reord_rxframe_free(&rx_priv->freeq_lock, &rx_priv->rxframes_freequeue, &pframe->rxframe_list); } }else{ //printk("%s pframe->seq_num2:%d \r\n", __func__, pframe->seq_num); reord_single_frame_ind(rx_priv, pframe);//not need to reorder } spin_unlock_bh(&preorder_ctrl->reord_list_lock); return 0; } if (reord_rxframe_enqueue(preorder_ctrl, pframe)) { spin_unlock_bh(&preorder_ctrl->reord_list_lock); goto fail; } if (reord_rxframes_process(rx_priv, preorder_ctrl, false) == true) { if (!timer_pending(&preorder_ctrl->reord_timer)) { ret = mod_timer(&preorder_ctrl->reord_timer, jiffies + msecs_to_jiffies(reorder_timeout/*REORDER_UPDATE_TIME*/)); } } else { if (timer_pending(&preorder_ctrl->reord_timer)) { ret = del_timer(&preorder_ctrl->reord_timer); } } reord_rxframes_ind(rx_priv, preorder_ctrl); spin_unlock_bh(&preorder_ctrl->reord_list_lock); return 0; fail: if (pframe->pkt) { dev_kfree_skb(pframe->pkt); pframe->pkt = NULL; } reord_rxframe_free(&rx_priv->freeq_lock, &rx_priv->rxframes_freequeue, &pframe->rxframe_list); return ret; } int reord_need_check(struct reord_ctrl *preorder_ctrl, u16 seq_num) { u8 wsize = preorder_ctrl->wsize_b; u16 wend = (preorder_ctrl->ind_sn + wsize -1) & 0xFFF; if (preorder_ctrl->ind_sn == 0xFFFF) { preorder_ctrl->ind_sn = seq_num; } if (SN_LESS(seq_num, preorder_ctrl->ind_sn)) { return -1; } if (SN_EQUAL(seq_num, preorder_ctrl->ind_sn)) { preorder_ctrl->ind_sn = (preorder_ctrl->ind_sn + 1) & 0xFFF; } else if (SN_LESS(wend, seq_num)) { if (seq_num >= (wsize-1)) preorder_ctrl->ind_sn = seq_num-(wsize-1); else preorder_ctrl->ind_sn = 0xFFF - (wsize - (seq_num + 1)) + 1; } return 0; } int reord_rxframe_enqueue(struct reord_ctrl *preorder_ctrl, struct recv_msdu *prframe) { struct list_head *preord_list = &preorder_ctrl->reord_list; struct list_head *phead, *plist; struct recv_msdu *pnextrframe; phead = preord_list; plist = phead->next; while (phead != plist) { pnextrframe = list_entry(plist, struct recv_msdu, reord_pending_list); if (SN_LESS(pnextrframe->seq_num, prframe->seq_num)) { plist = plist->next; continue; } else if (SN_EQUAL(pnextrframe->seq_num, prframe->seq_num)) { return -1; } else { break; } } list_add_tail(&(prframe->reord_pending_list), plist); return 0; } #endif /* AICWF_RX_REORDER */ void remove_sec_hdr_mgmt_frame(struct hw_rxhdr *hw_rxhdr, struct sk_buff *skb) { u8 hdr_len = 24; u8 mgmt_header[24] = {0}; if (!hw_rxhdr->hwvect.ga_frame) { if (((skb->data[0] & 0x0C) == 0) && (skb->data[1] & 0x40) == 0x40) { //protect management frame printk("frame type %x\n", skb->data[0]); if (hw_rxhdr->hwvect.decr_status == RWNX_RX_HD_DECR_CCMP128) { memcpy(mgmt_header, skb->data, hdr_len); skb_pull(skb, 8); memcpy(skb->data, mgmt_header, hdr_len); hw_rxhdr->hwvect.len -= 8; } else { printk("unsupport decr_status:%d\n", hw_rxhdr->hwvect.decr_status); } } } } #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) void defrag_timeout_cb(ulong data) #else void defrag_timeout_cb(struct timer_list *t) #endif { struct defrag_ctrl_info *defrag_ctrl = NULL; #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) defrag_ctrl = (struct defrag_ctrl_info *)data; #else defrag_ctrl = from_timer(defrag_ctrl, t, defrag_timer); #endif printk("%s:%p\r\n", __func__, defrag_ctrl); spin_lock_bh(&defrag_ctrl->rwnx_hw->defrag_lock); list_del_init(&defrag_ctrl->list); dev_kfree_skb(defrag_ctrl->skb); kfree(defrag_ctrl); spin_unlock_bh(&defrag_ctrl->rwnx_hw->defrag_lock); } u8 rwnx_rxdataind_aicwf(struct rwnx_hw *rwnx_hw, void *hostid, void *rx_priv) { struct hw_rxhdr *hw_rxhdr; struct rxdesc_tag *rxdesc = NULL; struct rwnx_vif *rwnx_vif; struct sk_buff *skb = hostid; int msdu_offset = sizeof(struct hw_rxhdr) + 2; u16_l status = 0; struct aicwf_rx_priv *rx_priv_tmp; u8 hdr_len = 24; u8 ra[MAC_ADDR_LEN] = {0}; u8 ta[MAC_ADDR_LEN] = {0}; u8 ether_type[2] = {0}; u8 pull_len = 0; u16 seq_num = 0; u8_l frag_num = 0; u8 tid = 0; u8 is_qos = 0; u8 is_frag = 0; struct defrag_ctrl_info *defrag_info = NULL; struct defrag_ctrl_info *defrag_info_tmp = NULL; struct sk_buff *skb_tmp = NULL; int ret; u8 sta_idx = 0; u16_l frame_ctrl; u8 is_amsdu = 0; u16 len_alligned = 0; u16 sublen = 0; struct sk_buff *sub_skb = NULL; bool resend = false, forward = true; const struct ethhdr *eth; hw_rxhdr = (struct hw_rxhdr *)skb->data; if (hw_rxhdr->is_monitor_vif) { status = RX_STAT_MONITOR; printk("monitor rx\n"); } if (hw_rxhdr->flags_upload) status |= RX_STAT_FORWARD; /* Check if we need to delete the buffer */ if (status & RX_STAT_DELETE) { /* Remove the SK buffer from the rxbuf_elems table */ #if 0 rwnx_ipc_rxbuf_elem_pull(rwnx_hw, skb); #endif /* Free the buffer */ dev_kfree_skb(skb); goto end; } /* Check if we need to forward the buffer coming from a monitor interface */ if (status & RX_STAT_MONITOR) { struct sk_buff *skb_monitor; struct hw_rxhdr hw_rxhdr_copy; u8 rtap_len; u16 frm_len; //Check if monitor interface exists and is open rwnx_vif = rwnx_rx_get_vif(rwnx_hw, rwnx_hw->monitor_vif); if (!rwnx_vif) { dev_err(rwnx_hw->dev, "Received monitor frame but there is no monitor interface open\n"); goto check_len_update; } rwnx_rx_vector_convert(rwnx_hw, &hw_rxhdr->hwvect.rx_vect1, &hw_rxhdr->hwvect.rx_vect2); rtap_len = rwnx_rx_rtap_hdrlen(&hw_rxhdr->hwvect.rx_vect1, false); // Move skb->data pointer to MAC Header or Ethernet header skb->data += (msdu_offset + 2); //sdio/usb word allign //Save frame length frm_len = le32_to_cpu(hw_rxhdr->hwvect.len); // Reserve space for frame skb->len = frm_len; if (status == RX_STAT_MONITOR) { /* Remove the SK buffer from the rxbuf_elems table. It will also unmap the buffer and then sync the buffer for the cpu */ //rwnx_ipc_rxbuf_elem_pull(rwnx_hw, skb); //Check if there is enough space to add the radiotap header if (skb_headroom(skb) > rtap_len) { skb_monitor = skb; //Duplicate the HW Rx Header to override with the radiotap header memcpy(&hw_rxhdr_copy, hw_rxhdr, sizeof(hw_rxhdr_copy)); hw_rxhdr = &hw_rxhdr_copy; } else { //Duplicate the skb and extend the headroom skb_monitor = skb_copy_expand(skb, rtap_len, 0, GFP_ATOMIC); //Reset original skb->data pointer skb->data = (void *)hw_rxhdr; } } else { skb->data = (void *)hw_rxhdr; wiphy_err(rwnx_hw->wiphy, "RX status %d is invalid when MON_DATA is disabled\n", status); goto check_len_update; } skb_reset_tail_pointer(skb); skb->len = 0; skb_reset_tail_pointer(skb_monitor); skb_monitor->len = 0; skb_put(skb_monitor, frm_len); if (rwnx_rx_monitor(rwnx_hw, rwnx_vif, skb_monitor, hw_rxhdr, rtap_len)) dev_kfree_skb(skb_monitor); if (status == RX_STAT_MONITOR) { status |= RX_STAT_ALLOC; if (skb_monitor != skb) { dev_kfree_skb(skb); } } } check_len_update: /* Check if we need to update the length */ if (status & RX_STAT_LEN_UPDATE) { if (rxdesc) hw_rxhdr->hwvect.len = rxdesc->frame_len; if (status & RX_STAT_ETH_LEN_UPDATE) { /* Update Length Field inside the Ethernet Header */ struct ethhdr *hdr = (struct ethhdr *)((u8 *)hw_rxhdr + msdu_offset); if (rxdesc) hdr->h_proto = htons(rxdesc->frame_len - sizeof(struct ethhdr)); } goto end; } /* Check if it must be discarded after informing upper layer */ if (status & RX_STAT_SPURIOUS) { struct ieee80211_hdr *hdr; hdr = (struct ieee80211_hdr *)(skb->data + msdu_offset); rwnx_vif = rwnx_rx_get_vif(rwnx_hw, hw_rxhdr->flags_vif_idx); if (rwnx_vif) { rwnx_cfg80211_rx_spurious_frame(rwnx_vif->ndev, hdr->addr2, GFP_ATOMIC); } goto end; } /* Check if we need to forward the buffer */ if (status & RX_STAT_FORWARD) { rwnx_rx_vector_convert(rwnx_hw, &hw_rxhdr->hwvect.rx_vect1, &hw_rxhdr->hwvect.rx_vect2); skb_pull(skb, msdu_offset + 2); //+2 since sdio allign 58->60 #define MAC_FCTRL_MOREFRAG 0x0400 frame_ctrl = (skb->data[1] << 8) | skb->data[0]; seq_num = ((skb->data[22] & 0xf0) >> 4) | (skb->data[23] << 4); frag_num = (skb->data[22] & 0x0f); is_amsdu = 0; if ((skb->data[0] & 0x0f) == 0x08) { if ((skb->data[0] & 0x80) == 0x80) {//qos data hdr_len = 26; tid = skb->data[24] & 0x0F; is_qos = 1; if (skb->data[24] & 0x80) is_amsdu = 1; } if(skb->data[1] & 0x80)// htc hdr_len += 4; if ((skb->data[1] & 0x3) == 0x1) {// to ds memcpy(ra, &skb->data[16], MAC_ADDR_LEN); memcpy(ta, &skb->data[10], MAC_ADDR_LEN); } else if ((skb->data[1] & 0x3) == 0x2) { //from ds memcpy(ta, &skb->data[16], MAC_ADDR_LEN); memcpy(ra, &skb->data[4], MAC_ADDR_LEN); } pull_len += (hdr_len + 8); switch (hw_rxhdr->hwvect.decr_status) { case RWNX_RX_HD_DECR_CCMP128: pull_len += 8;//ccmp_header //skb_pull(&skb->data[skb->len-8], 8); //ccmp_mic_len memcpy(ether_type, &skb->data[hdr_len + 6 + 8], 2); break; case RWNX_RX_HD_DECR_TKIP: pull_len += 8;//tkip_header memcpy(ether_type, &skb->data[hdr_len + 6 + 8], 2); break; case RWNX_RX_HD_DECR_WEP: pull_len += 4;//wep_header memcpy(ether_type, &skb->data[hdr_len + 6 + 4], 2); break; case RWNX_RX_HD_DECR_WAPI: pull_len += 18;//wapi_header memcpy(ether_type, &skb->data[hdr_len + 6 + 18], 2); break; default: memcpy(ether_type, &skb->data[hdr_len + 6], 2); break; } if (is_amsdu) { skb_pull(skb, pull_len-8); /* |amsdu sub1 | amsdu sub2 | ... */ len_alligned = 0; sublen = 0; sub_skb = NULL; //printk("is_len:%d, pull:%d\n", skb->len, pull_len); while (skb->len > 16) { sublen = (skb->data[12]<<8)|(skb->data[13]); if (skb->len > (sublen+14)) len_alligned = roundup(sublen + 14, 4); else if (skb->len == (sublen+14)) len_alligned = sublen+14; else { printk("accroding to amsdu: this will not happen\n"); break; } //printk("sublen = %d, %x, %x, %x, %x\r\n", sublen,skb->data[0], skb->data[1], skb->data[12], skb->data[13]); #if 1 sub_skb = __dev_alloc_skb(sublen - 6 + 12, GFP_KERNEL); skb_put(sub_skb, sublen - 6 + 12); memcpy(sub_skb->data, skb->data, MAC_ADDR_LEN); memcpy(&sub_skb->data[6], &skb->data[6], MAC_ADDR_LEN); memcpy(&sub_skb->data[12], &skb->data[14 + 6], sublen - 6); rwnx_vif = rwnx_rx_get_vif(rwnx_hw, hw_rxhdr->flags_vif_idx); if (!rwnx_vif) { printk("Frame received but no active vif (%d)", hw_rxhdr->flags_vif_idx); dev_kfree_skb(sub_skb); break; } if (!rwnx_rx_data_skb(rwnx_hw, rwnx_vif, sub_skb, hw_rxhdr)) dev_kfree_skb(sub_skb); #endif skb_pull(skb, len_alligned); } dev_kfree_skb(skb); return 0; } if (hw_rxhdr->flags_dst_idx != RWNX_INVALID_STA) sta_idx = hw_rxhdr->flags_dst_idx; if (!hw_rxhdr->flags_need_reord && ((frame_ctrl & MAC_FCTRL_MOREFRAG) || frag_num)) { printk("rxfrag:%d,%d,%d,sn=%d,%d\r\n", (frame_ctrl & MAC_FCTRL_MOREFRAG), frag_num, skb->len, seq_num,pull_len); if (frame_ctrl & MAC_FCTRL_MOREFRAG) { spin_lock_bh(&rwnx_hw->defrag_lock); if (!list_empty(&rwnx_hw->defrag_list)) { list_for_each_entry(defrag_info_tmp, &rwnx_hw->defrag_list, list) { if ((defrag_info_tmp->sn == seq_num) && (defrag_info_tmp->tid == tid) && \ defrag_info_tmp->sta_idx == sta_idx) { defrag_info = defrag_info_tmp; break; } } } //printk("rx frag: sn=%d, fn=%d, skb->len=%d\r\n", seq_num, frag_num, skb->len); if (defrag_info) { is_frag = 1; if (defrag_info->next_fn != frag_num) { printk("discard:%d:%d\n", defrag_info->next_fn, frag_num); dev_kfree_skb(skb); spin_unlock_bh(&rwnx_hw->defrag_lock); return 0; } skb_put(defrag_info->skb, skb->len-(pull_len-8)); memcpy(&defrag_info->skb->data[defrag_info->frm_len], \ &skb->data[pull_len-8], skb->len - (pull_len-8)); //printk("middle:%d,%d\n", skb->len-(pull_len-8), skb->len); defrag_info->frm_len += (skb->len - (pull_len - 8)); defrag_info->next_fn++; dev_kfree_skb(skb); spin_unlock_bh(&rwnx_hw->defrag_lock); return 0; } else { defrag_info = kzalloc(sizeof(struct defrag_ctrl_info), GFP_KERNEL); if (defrag_info == NULL) { printk("no defrag_ctrl_info\r\n"); dev_kfree_skb(skb); spin_unlock_bh(&rwnx_hw->defrag_lock); return 0; } defrag_info->skb = __dev_alloc_skb(2000, GFP_KERNEL); if (defrag_info->skb == NULL) { printk("no fragment skb\r\n"); dev_kfree_skb(skb); kfree(defrag_info); spin_unlock_bh(&rwnx_hw->defrag_lock); return 0; } is_frag = 1; skb_pull(skb, pull_len); skb_push(skb, 14); memcpy(skb->data, ra, MAC_ADDR_LEN); memcpy(&skb->data[6], ta, MAC_ADDR_LEN); memcpy(&skb->data[12], ether_type, 2); defrag_info->sn = seq_num; defrag_info->next_fn = 1; defrag_info->tid = tid; defrag_info->sta_idx = sta_idx; skb_put(defrag_info->skb, skb->len); memcpy(defrag_info->skb->data, skb->data, skb->len); defrag_info->frm_len = skb->len; defrag_info->rwnx_hw = rwnx_hw; //printk("first:%p,%p,%p,%p,%p, %d,%d\r\n", defrag_info, defrag_info->skb, defrag_info->skb->head, defrag_info->skb->tail, defrag_info->skb->end, defrag_info->frm_len, skb->len); list_add_tail(&defrag_info->list, &rwnx_hw->defrag_list); spin_unlock_bh(&rwnx_hw->defrag_lock); #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) init_timer(&defrag_info->defrag_timer); defrag_info->defrag_timer.data = (unsigned long)defrag_info; defrag_info->defrag_timer.function = defrag_timeout_cb; #else timer_setup(&defrag_info->defrag_timer, defrag_timeout_cb, 0); #endif ret = mod_timer(&defrag_info->defrag_timer, jiffies + msecs_to_jiffies(DEFRAG_MAX_WAIT)); dev_kfree_skb(skb); return 0; } } else { //check whether the last fragment if (!list_empty(&rwnx_hw->defrag_list)) { spin_lock_bh(&rwnx_hw->defrag_lock); list_for_each_entry(defrag_info_tmp, &rwnx_hw->defrag_list, list) { if (((defrag_info_tmp->sn == seq_num) && (defrag_info_tmp->tid == tid) && \ defrag_info_tmp->sta_idx == sta_idx)) { defrag_info = defrag_info_tmp; break; } } if (!defrag_info) spin_unlock_bh(&rwnx_hw->defrag_lock); else { if (defrag_info->next_fn != frag_num) { printk("discard:%d:%d\n", defrag_info->next_fn, frag_num); dev_kfree_skb(skb); spin_unlock_bh(&rwnx_hw->defrag_lock); return 0; } skb_put(defrag_info->skb, skb->len - (pull_len-8)); memcpy(&defrag_info->skb->data[defrag_info->frm_len], \ &skb->data[pull_len-8], skb->len - (pull_len-8)); defrag_info->frm_len += (skb->len - (pull_len-8)); is_frag = 1; //printk("last: sn=%d, fn=%d, %d, %d\r\n", seq_num, frag_num, defrag_info->frm_len, skb->len); rwnx_vif = rwnx_rx_get_vif(rwnx_hw, hw_rxhdr->flags_vif_idx); if (!rwnx_vif) { printk("Frame received but no active vif (%d)", hw_rxhdr->flags_vif_idx); dev_kfree_skb(skb); spin_unlock_bh(&rwnx_hw->defrag_lock); return 0; } dev_kfree_skb(skb); skb_tmp = defrag_info->skb; list_del_init(&defrag_info->list); if (timer_pending(&defrag_info->defrag_timer)) { ret = del_timer(&defrag_info->defrag_timer); } kfree(defrag_info); spin_unlock_bh(&rwnx_hw->defrag_lock); if (!rwnx_rx_data_skb(rwnx_hw, rwnx_vif, skb_tmp, hw_rxhdr)) dev_kfree_skb(skb_tmp); return 0; } } } } if (!is_frag) { skb_pull(skb, pull_len); skb_push(skb, 14); memcpy(skb->data, ra, MAC_ADDR_LEN); memcpy(&skb->data[6], ta, MAC_ADDR_LEN); memcpy(&skb->data[12], ether_type, 2); } } if (hw_rxhdr->flags_is_80211_mpdu) { remove_sec_hdr_mgmt_frame(hw_rxhdr, skb); rwnx_rx_mgmt_any(rwnx_hw, skb, hw_rxhdr); } else { rwnx_vif = rwnx_rx_get_vif(rwnx_hw, hw_rxhdr->flags_vif_idx); if (!rwnx_vif) { dev_err(rwnx_hw->dev, "Frame received but no active vif(%d)", hw_rxhdr->flags_vif_idx); dev_kfree_skb(skb); goto end; } if (hw_rxhdr->flags_sta_idx != RWNX_INVALID_STA) { struct rwnx_sta *sta; sta = &rwnx_hw->sta_table[hw_rxhdr->flags_sta_idx]; rwnx_rx_statistic(rwnx_hw, hw_rxhdr, sta); if (sta->vlan_idx != rwnx_vif->vif_index) { rwnx_vif = rwnx_hw->vif_table[sta->vlan_idx]; if (!rwnx_vif) { dev_kfree_skb(skb); goto end; } } if (hw_rxhdr->flags_is_4addr && !rwnx_vif->use_4addr) { rwnx_cfg80211_rx_unexpected_4addr_frame(rwnx_vif->ndev, sta->mac_addr, GFP_ATOMIC); } } skb->priority = 256 + tid;//hw_rxhdr->flags_user_prio; #ifdef AICWF_RX_REORDER rx_priv_tmp = rx_priv; rx_priv_tmp->rwnx_vif = (void *)rwnx_vif; if ((rwnx_vif->wdev.iftype == NL80211_IFTYPE_STATION) || (rwnx_vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)) { if (is_qos && hw_rxhdr->flags_need_reord) reord_process_unit((struct aicwf_rx_priv *)rx_priv, skb, seq_num, tid, 1); else if (is_qos && !hw_rxhdr->flags_need_reord) { reord_flush_tid((struct aicwf_rx_priv *)rx_priv, skb, tid); if (!rwnx_rx_data_skb(rwnx_hw, rwnx_vif, skb, hw_rxhdr)) dev_kfree_skb(skb); } else { if (!rwnx_rx_data_skb(rwnx_hw, rwnx_vif, skb, hw_rxhdr)) dev_kfree_skb(skb); } } else if ((rwnx_vif->wdev.iftype == NL80211_IFTYPE_AP) || (rwnx_vif->wdev.iftype == NL80211_IFTYPE_P2P_GO)) { #if 1 skb_reset_mac_header(skb); eth = eth_hdr(skb); //printk("da:%pM, %x,%x, len=%d\n", eth->h_dest, skb->data[12], skb->data[13], skb->len); if (unlikely(is_multicast_ether_addr(eth->h_dest))) { /* broadcast pkt need to be forwared to upper layer and resent on wireless interface */ resend = true; } else { /* unicast pkt for STA inside the BSS, no need to forward to upper layer simply resend on wireless interface */ if (hw_rxhdr->flags_dst_idx != RWNX_INVALID_STA) { struct rwnx_sta *sta = &rwnx_hw->sta_table[hw_rxhdr->flags_dst_idx]; if (sta->valid && (sta->vlan_idx == rwnx_vif->vif_index)) { resend = true; forward = false; } } } if (resend) rwnx_rx_data_skb_resend(rwnx_hw, rwnx_vif, skb, hw_rxhdr); if (forward) { if (is_qos && hw_rxhdr->flags_need_reord) reord_process_unit((struct aicwf_rx_priv *)rx_priv, skb, seq_num, tid, 1); else if (is_qos && !hw_rxhdr->flags_need_reord) { reord_flush_tid((struct aicwf_rx_priv *)rx_priv, skb, tid); rwnx_rx_data_skb_forward(rwnx_hw, rwnx_vif, skb, hw_rxhdr); } else rwnx_rx_data_skb_forward(rwnx_hw, rwnx_vif, skb, hw_rxhdr); } else if(resend) { if (is_qos && hw_rxhdr->flags_need_reord) reord_process_unit((struct aicwf_rx_priv *)rx_priv, skb, seq_num, tid, 0); else if (is_qos && !hw_rxhdr->flags_need_reord) { reord_flush_tid((struct aicwf_rx_priv *)rx_priv, skb, tid); dev_kfree_skb(skb); } }else dev_kfree_skb(skb); #else if (!rwnx_rx_data_skb(rwnx_hw, rwnx_vif, skb, hw_rxhdr)) dev_kfree_skb(skb); #endif } #else if (!rwnx_rx_data_skb(rwnx_hw, rwnx_vif, skb, hw_rxhdr)) dev_kfree_skb(skb); #endif } } end: return 0; }