diff options
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/txrx.c')
-rw-r--r-- | drivers/net/wireless/ath/wil6210/txrx.c | 177 |
1 files changed, 109 insertions, 68 deletions
diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c index 16b8a4e5201f..b60b9fcaaebd 100644 --- a/drivers/net/wireless/ath/wil6210/txrx.c +++ b/drivers/net/wireless/ath/wil6210/txrx.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. + * Copyright (c) 2018, The Linux Foundation. All rights reserved. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -474,7 +475,8 @@ static struct sk_buff *wil_vring_reap_rx(struct wil6210_priv *wil, struct vring *vring) { struct device *dev = wil_to_dev(wil); - struct net_device *ndev = wil_to_ndev(wil); + struct wil6210_vif *vif; + struct net_device *ndev; volatile struct vring_rx_desc *_d; struct vring_rx_desc *d; struct sk_buff *skb; @@ -483,7 +485,7 @@ static struct sk_buff *wil_vring_reap_rx(struct wil6210_priv *wil, unsigned int sz = wil->rx_buf_len + ETH_HLEN + snaplen; u16 dmalen; u8 ftype; - int cid; + int cid, mid; int i; struct wil_net_stats *stats; @@ -520,6 +522,16 @@ again: (const void *)d, sizeof(*d), false); cid = wil_rxdesc_cid(d); + mid = wil_rxdesc_mid(d); + vif = wil->vifs[mid]; + + if (unlikely(!vif)) { + wil_dbg_txrx(wil, "skipped RX descriptor with invalid mid %d", + mid); + kfree_skb(skb); + goto again; + } + ndev = vif_to_ndev(vif); stats = &wil->sta[cid].stats; if (unlikely(dmalen > sz)) { @@ -553,7 +565,6 @@ again: ftype = wil_rxdesc_ftype(d) << 2; if (unlikely(ftype != IEEE80211_FTYPE_DATA)) { u8 fc1 = wil_rxdesc_fc1(d); - int mid = wil_rxdesc_mid(d); int tid = wil_rxdesc_tid(d); u16 seq = wil_rxdesc_seq(d); @@ -565,7 +576,7 @@ again: wil_dbg_txrx(wil, "BAR: MID %d CID %d TID %d Seq 0x%03x\n", mid, cid, tid, seq); - wil_rx_bar(wil, cid, tid, seq); + wil_rx_bar(wil, vif, cid, tid, seq); } else { /* print again all info. One can enable only this * without overhead for printing every Rx frame @@ -621,10 +632,15 @@ again: /** * allocate and fill up to @count buffers in rx ring * buffers posted at @swtail + * Note: we have a single RX queue for servicing all VIFs, but we + * allocate skbs with headroom according to main interface only. This + * means it will not work with monitor interface together with other VIFs. + * Currently we only support monitor interface on its own without other VIFs, + * and we will need to fix this code once we add support. */ static int wil_rx_refill(struct wil6210_priv *wil, int count) { - struct net_device *ndev = wil_to_ndev(wil); + struct net_device *ndev = wil->main_ndev; struct vring *v = &wil->vring_rx; u32 next_tail; int rc = 0; @@ -713,8 +729,9 @@ static int wil_rx_crypto_check(struct wil6210_priv *wil, struct sk_buff *skb) void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) { gro_result_t rc = GRO_NORMAL; + struct wil6210_vif *vif = ndev_to_vif(ndev); struct wil6210_priv *wil = ndev_to_wil(ndev); - struct wireless_dev *wdev = wil_to_wdev(wil); + struct wireless_dev *wdev = vif_to_wdev(vif); unsigned int len = skb->len; struct vring_rx_desc *d = wil_skb_rxdesc(skb); int cid = wil_rxdesc_cid(d); /* always 0..7, no need to check */ @@ -751,14 +768,15 @@ void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) goto stats; } - if (wdev->iftype == NL80211_IFTYPE_AP && !wil->ap_isolate) { + if (wdev->iftype == NL80211_IFTYPE_AP && !vif->ap_isolate) { if (mcast) { /* send multicast frames both to higher layers in * local net stack and back to the wireless medium */ xmit_skb = skb_copy(skb, GFP_ATOMIC); } else { - int xmit_cid = wil_find_cid(wil, eth->h_dest); + int xmit_cid = wil_find_cid(wil, vif->mid, + eth->h_dest); if (xmit_cid >= 0) { /* The destination station is associated to @@ -786,8 +804,8 @@ void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) } if (skb) { /* deliver to local stack */ - skb->protocol = eth_type_trans(skb, ndev); + skb->dev = ndev; rc = napi_gro_receive(&wil->napi_rx, skb); wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n", len, gro_res_str[rc]); @@ -815,7 +833,8 @@ stats: */ void wil_rx_handle(struct wil6210_priv *wil, int *quota) { - struct net_device *ndev = wil_to_ndev(wil); + struct net_device *ndev = wil->main_ndev; + struct wireless_dev *wdev = ndev->ieee80211_ptr; struct vring *v = &wil->vring_rx; struct sk_buff *skb; @@ -827,7 +846,8 @@ void wil_rx_handle(struct wil6210_priv *wil, int *quota) while ((*quota > 0) && (NULL != (skb = wil_vring_reap_rx(wil, v)))) { (*quota)--; - if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { + /* monitor is currently supported on main interface only */ + if (wdev->iftype == NL80211_IFTYPE_MONITOR) { skb->dev = ndev; skb_reset_mac_header(skb); skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -911,12 +931,14 @@ static inline void wil_tx_data_init(struct vring_tx_data *txdata) txdata->agg_timeout = 0; txdata->agg_amsdu = 0; txdata->addba_in_progress = false; + txdata->mid = U8_MAX; spin_unlock_bh(&txdata->lock); } -int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size, +int wil_vring_init_tx(struct wil6210_vif *vif, int id, int size, int cid, int tid) { + struct wil6210_priv *wil = vif_to_wil(vif); int rc; struct wmi_vring_cfg_cmd cmd = { .action = cpu_to_le32(WMI_VRING_CMD_ADD), @@ -966,9 +988,9 @@ int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size, cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); - if (!wil->privacy) + if (!vif->privacy) txdata->dot1x_open = true; - rc = wmi_call(wil, WMI_VRING_CFG_CMDID, &cmd, sizeof(cmd), + rc = wmi_call(wil, WMI_VRING_CFG_CMDID, vif->mid, &cmd, sizeof(cmd), WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); if (rc) goto out_free; @@ -982,6 +1004,7 @@ int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size, spin_lock_bh(&txdata->lock); vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); + txdata->mid = vif->mid; txdata->enabled = 1; spin_unlock_bh(&txdata->lock); @@ -1003,8 +1026,9 @@ int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size, return rc; } -int wil_vring_init_bcast(struct wil6210_priv *wil, int id, int size) +int wil_vring_init_bcast(struct wil6210_vif *vif, int id, int size) { + struct wil6210_priv *wil = vif_to_wil(vif); int rc; struct wmi_bcast_vring_cfg_cmd cmd = { .action = cpu_to_le32(WMI_VRING_CMD_ADD), @@ -1046,9 +1070,10 @@ int wil_vring_init_bcast(struct wil6210_priv *wil, int id, int size) cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); - if (!wil->privacy) + if (!vif->privacy) txdata->dot1x_open = true; - rc = wmi_call(wil, WMI_BCAST_VRING_CFG_CMDID, &cmd, sizeof(cmd), + rc = wmi_call(wil, WMI_BCAST_VRING_CFG_CMDID, vif->mid, + &cmd, sizeof(cmd), WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); if (rc) goto out_free; @@ -1062,6 +1087,7 @@ int wil_vring_init_bcast(struct wil6210_priv *wil, int id, int size) spin_lock_bh(&txdata->lock); vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); + txdata->mid = vif->mid; txdata->enabled = 1; spin_unlock_bh(&txdata->lock); @@ -1091,6 +1117,7 @@ void wil_vring_fini_tx(struct wil6210_priv *wil, int id) spin_lock_bh(&txdata->lock); txdata->dot1x_open = false; + txdata->mid = U8_MAX; txdata->enabled = 0; /* no Tx can be in progress or start anew */ spin_unlock_bh(&txdata->lock); /* napi_synchronize waits for completion of the current NAPI but will @@ -1108,11 +1135,12 @@ void wil_vring_fini_tx(struct wil6210_priv *wil, int id) } static struct vring *wil_find_tx_ucast(struct wil6210_priv *wil, + struct wil6210_vif *vif, struct sk_buff *skb) { int i; struct ethhdr *eth = (void *)skb->data; - int cid = wil_find_cid(wil, eth->h_dest); + int cid = wil_find_cid(wil, vif->mid, eth->h_dest); if (cid < 0) return NULL; @@ -1142,10 +1170,11 @@ static struct vring *wil_find_tx_ucast(struct wil6210_priv *wil, return NULL; } -static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, - struct sk_buff *skb); +static int wil_tx_vring(struct wil6210_priv *wil, struct wil6210_vif *vif, + struct vring *vring, struct sk_buff *skb); static struct vring *wil_find_tx_vring_sta(struct wil6210_priv *wil, + struct wil6210_vif *vif, struct sk_buff *skb) { struct vring *v; @@ -1160,7 +1189,7 @@ static struct vring *wil_find_tx_vring_sta(struct wil6210_priv *wil, for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { v = &wil->vring_tx[i]; txdata = &wil->vring_tx_data[i]; - if (!v->va || !txdata->enabled) + if (!v->va || !txdata->enabled || txdata->mid != vif->mid) continue; cid = wil->vring2cid_tid[i][0]; @@ -1193,11 +1222,12 @@ static struct vring *wil_find_tx_vring_sta(struct wil6210_priv *wil, * - for PBSS */ static struct vring *wil_find_tx_bcast_1(struct wil6210_priv *wil, + struct wil6210_vif *vif, struct sk_buff *skb) { struct vring *v; struct vring_tx_data *txdata; - int i = wil->bcast_vring; + int i = vif->bcast_vring; if (i < 0) return NULL; @@ -1222,6 +1252,7 @@ static void wil_set_da_for_vring(struct wil6210_priv *wil, } static struct vring *wil_find_tx_bcast_2(struct wil6210_priv *wil, + struct wil6210_vif *vif, struct sk_buff *skb) { struct vring *v, *v2; @@ -1230,13 +1261,13 @@ static struct vring *wil_find_tx_bcast_2(struct wil6210_priv *wil, u8 cid; struct ethhdr *eth = (void *)skb->data; char *src = eth->h_source; - struct vring_tx_data *txdata; + struct vring_tx_data *txdata, *txdata2; /* find 1-st vring eligible for data */ for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { v = &wil->vring_tx[i]; txdata = &wil->vring_tx_data[i]; - if (!v->va || !txdata->enabled) + if (!v->va || !txdata->enabled || txdata->mid != vif->mid) continue; cid = wil->vring2cid_tid[i][0]; @@ -1264,7 +1295,8 @@ found: /* find other active vrings and duplicate skb for each */ for (i++; i < WIL6210_MAX_TX_RINGS; i++) { v2 = &wil->vring_tx[i]; - if (!v2->va) + txdata2 = &wil->vring_tx_data[i]; + if (!v2->va || txdata2->mid != vif->mid) continue; cid = wil->vring2cid_tid[i][0]; if (cid >= WIL6210_MAX_CID) /* skip BCAST */ @@ -1280,7 +1312,7 @@ found: if (skb2) { wil_dbg_txrx(wil, "BCAST DUP -> ring %d\n", i); wil_set_da_for_vring(wil, skb2, i); - wil_tx_vring(wil, v2, skb2); + wil_tx_vring(wil, vif, v2, skb2); } else { wil_err(wil, "skb_copy failed\n"); } @@ -1417,8 +1449,8 @@ static inline void wil_set_tx_desc_last_tso(volatile struct vring_tx_desc *d) DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS; } -static int __wil_tx_vring_tso(struct wil6210_priv *wil, struct vring *vring, - struct sk_buff *skb) +static int __wil_tx_vring_tso(struct wil6210_priv *wil, struct wil6210_vif *vif, + struct vring *vring, struct sk_buff *skb) { struct device *dev = wil_to_dev(wil); @@ -1710,8 +1742,8 @@ err_exit: return rc; } -static int __wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, - struct sk_buff *skb) +static int __wil_tx_vring(struct wil6210_priv *wil, struct wil6210_vif *vif, + struct vring *vring, struct sk_buff *skb) { struct device *dev = wil_to_dev(wil); struct vring_tx_desc dd, *d = ⅆ @@ -1725,7 +1757,7 @@ static int __wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, uint i = swhead; dma_addr_t pa; int used; - bool mcast = (vring_index == wil->bcast_vring); + bool mcast = (vring_index == vif->bcast_vring); uint len = skb_headlen(skb); wil_dbg_txrx(wil, "tx_vring: %d bytes to vring %d\n", skb->len, @@ -1860,8 +1892,8 @@ static int __wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, return -EINVAL; } -static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, - struct sk_buff *skb) +static int wil_tx_vring(struct wil6210_priv *wil, struct wil6210_vif *vif, + struct vring *vring, struct sk_buff *skb) { int vring_index = vring - wil->vring_tx; struct vring_tx_data *txdata = &wil->vring_tx_data[vring_index]; @@ -1879,7 +1911,7 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, } rc = (skb_is_gso(skb) ? __wil_tx_vring_tso : __wil_tx_vring) - (wil, vring, skb); + (wil, vif, vring, skb); spin_unlock(&txdata->lock); @@ -1888,6 +1920,7 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, /** * Check status of tx vrings and stop/wake net queues if needed + * It will start/stop net queues of a specific VIF net_device. * * This function does one of two checks: * In case check_stop is true, will check if net queues need to be stopped. If @@ -1903,28 +1936,32 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, * availability and modified vring has high descriptor availability. */ static inline void __wil_update_net_queues(struct wil6210_priv *wil, + struct wil6210_vif *vif, struct vring *vring, bool check_stop) { int i; + if (unlikely(!vif)) + return; + if (vring) - wil_dbg_txrx(wil, "vring %d, check_stop=%d, stopped=%d", - (int)(vring - wil->vring_tx), check_stop, - wil->net_queue_stopped); + wil_dbg_txrx(wil, "vring %d, mid %d, check_stop=%d, stopped=%d", + (int)(vring - wil->vring_tx), vif->mid, check_stop, + vif->net_queue_stopped); else - wil_dbg_txrx(wil, "check_stop=%d, stopped=%d", - check_stop, wil->net_queue_stopped); + wil_dbg_txrx(wil, "check_stop=%d, mid=%d, stopped=%d", + check_stop, vif->mid, vif->net_queue_stopped); - if (check_stop == wil->net_queue_stopped) + if (check_stop == vif->net_queue_stopped) /* net queues already in desired state */ return; if (check_stop) { if (!vring || unlikely(wil_vring_avail_low(vring))) { /* not enough room in the vring */ - netif_tx_stop_all_queues(wil_to_ndev(wil)); - wil->net_queue_stopped = true; + netif_tx_stop_all_queues(vif_to_ndev(vif)); + vif->net_queue_stopped = true; wil_dbg_txrx(wil, "netif_tx_stop called\n"); } return; @@ -1940,7 +1977,8 @@ static inline void __wil_update_net_queues(struct wil6210_priv *wil, struct vring *cur_vring = &wil->vring_tx[i]; struct vring_tx_data *txdata = &wil->vring_tx_data[i]; - if (!cur_vring->va || !txdata->enabled || cur_vring == vring) + if (txdata->mid != vif->mid || !cur_vring->va || + !txdata->enabled || cur_vring == vring) continue; if (wil_vring_avail_low(cur_vring)) { @@ -1953,30 +1991,31 @@ static inline void __wil_update_net_queues(struct wil6210_priv *wil, if (!vring || wil_vring_avail_high(vring)) { /* enough room in the vring */ wil_dbg_txrx(wil, "calling netif_tx_wake\n"); - netif_tx_wake_all_queues(wil_to_ndev(wil)); - wil->net_queue_stopped = false; + netif_tx_wake_all_queues(vif_to_ndev(vif)); + vif->net_queue_stopped = false; } } -void wil_update_net_queues(struct wil6210_priv *wil, struct vring *vring, - bool check_stop) +void wil_update_net_queues(struct wil6210_priv *wil, struct wil6210_vif *vif, + struct vring *vring, bool check_stop) { spin_lock(&wil->net_queue_lock); - __wil_update_net_queues(wil, vring, check_stop); + __wil_update_net_queues(wil, vif, vring, check_stop); spin_unlock(&wil->net_queue_lock); } -void wil_update_net_queues_bh(struct wil6210_priv *wil, struct vring *vring, - bool check_stop) +void wil_update_net_queues_bh(struct wil6210_priv *wil, struct wil6210_vif *vif, + struct vring *vring, bool check_stop) { spin_lock_bh(&wil->net_queue_lock); - __wil_update_net_queues(wil, vring, check_stop); + __wil_update_net_queues(wil, vif, vring, check_stop); spin_unlock_bh(&wil->net_queue_lock); } netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) { - struct wil6210_priv *wil = ndev_to_wil(ndev); + struct wil6210_vif *vif = ndev_to_vif(ndev); + struct wil6210_priv *wil = vif_to_wil(vif); struct ethhdr *eth = (void *)skb->data; bool bcast = is_multicast_ether_addr(eth->h_dest); struct vring *vring; @@ -1991,49 +2030,50 @@ netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) } goto drop; } - if (unlikely(!test_bit(wil_status_fwconnected, wil->status))) { - wil_dbg_ratelimited(wil, "FW not connected, packet dropped\n"); + if (unlikely(!test_bit(wil_vif_fwconnected, vif->status))) { + wil_dbg_ratelimited(wil, + "VIF not connected, packet dropped\n"); goto drop; } - if (unlikely(wil->wdev->iftype == NL80211_IFTYPE_MONITOR)) { + if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_MONITOR)) { wil_err(wil, "Xmit in monitor mode not supported\n"); goto drop; } pr_once_fw = false; /* find vring */ - if (wil->wdev->iftype == NL80211_IFTYPE_STATION && !wil->pbss) { + if (vif->wdev.iftype == NL80211_IFTYPE_STATION && !vif->pbss) { /* in STA mode (ESS), all to same VRING (to AP) */ - vring = wil_find_tx_vring_sta(wil, skb); + vring = wil_find_tx_vring_sta(wil, vif, skb); } else if (bcast) { - if (wil->pbss) + if (vif->pbss) /* in pbss, no bcast VRING - duplicate skb in * all stations VRINGs */ - vring = wil_find_tx_bcast_2(wil, skb); - else if (wil->wdev->iftype == NL80211_IFTYPE_AP) + vring = wil_find_tx_bcast_2(wil, vif, skb); + else if (vif->wdev.iftype == NL80211_IFTYPE_AP) /* AP has a dedicated bcast VRING */ - vring = wil_find_tx_bcast_1(wil, skb); + vring = wil_find_tx_bcast_1(wil, vif, skb); else /* unexpected combination, fallback to duplicating * the skb in all stations VRINGs */ - vring = wil_find_tx_bcast_2(wil, skb); + vring = wil_find_tx_bcast_2(wil, vif, skb); } else { /* unicast, find specific VRING by dest. address */ - vring = wil_find_tx_ucast(wil, skb); + vring = wil_find_tx_ucast(wil, vif, skb); } if (unlikely(!vring)) { wil_dbg_txrx(wil, "No Tx VRING found for %pM\n", eth->h_dest); goto drop; } /* set up vring entry */ - rc = wil_tx_vring(wil, vring, skb); + rc = wil_tx_vring(wil, vif, vring, skb); switch (rc) { case 0: /* shall we stop net queues? */ - wil_update_net_queues_bh(wil, vring, true); + wil_update_net_queues_bh(wil, vif, vring, true); /* statistics will be updated on the tx_complete */ dev_kfree_skb_any(skb); return NETDEV_TX_OK; @@ -2072,9 +2112,10 @@ static inline void wil_consume_skb(struct sk_buff *skb, bool acked) * * Safe to call from IRQ */ -int wil_tx_complete(struct wil6210_priv *wil, int ringid) +int wil_tx_complete(struct wil6210_vif *vif, int ringid) { - struct net_device *ndev = wil_to_ndev(wil); + struct wil6210_priv *wil = vif_to_wil(vif); + struct net_device *ndev = vif_to_ndev(vif); struct device *dev = wil_to_dev(wil); struct vring *vring = &wil->vring_tx[ringid]; struct vring_tx_data *txdata = &wil->vring_tx_data[ringid]; @@ -2184,7 +2225,7 @@ int wil_tx_complete(struct wil6210_priv *wil, int ringid) /* shall we wake net queues? */ if (done) - wil_update_net_queues(wil, vring, false); + wil_update_net_queues(wil, vif, vring, false); return done; } |