Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1 | /* |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 2 | * Copyright (c) 2012-2015 Qualcomm Atheros, Inc. |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 17 | #include <linux/etherdevice.h> |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 18 | #include <net/ieee80211_radiotap.h> |
| 19 | #include <linux/if_arp.h> |
| 20 | #include <linux/moduleparam.h> |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 21 | #include <linux/ip.h> |
| 22 | #include <linux/ipv6.h> |
| 23 | #include <net/ipv6.h> |
Vladimir Kondratiev | 0786dc4 | 2014-01-14 20:31:26 +0200 | [diff] [blame] | 24 | #include <linux/prefetch.h> |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 25 | |
| 26 | #include "wil6210.h" |
| 27 | #include "wmi.h" |
| 28 | #include "txrx.h" |
Vladimir Kondratiev | 9865809 | 2013-05-12 14:43:35 +0300 | [diff] [blame] | 29 | #include "trace.h" |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 30 | |
| 31 | static bool rtap_include_phy_info; |
| 32 | module_param(rtap_include_phy_info, bool, S_IRUGO); |
| 33 | MODULE_PARM_DESC(rtap_include_phy_info, |
| 34 | " Include PHY info in the radiotap header, default - no"); |
| 35 | |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 36 | bool rx_align_2; |
| 37 | module_param(rx_align_2, bool, S_IRUGO); |
| 38 | MODULE_PARM_DESC(rx_align_2, " align Rx buffers on 4*n+2, default - no"); |
| 39 | |
| 40 | static inline uint wil_rx_snaplen(void) |
| 41 | { |
| 42 | return rx_align_2 ? 6 : 0; |
| 43 | } |
| 44 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 45 | static inline int wil_vring_is_empty(struct vring *vring) |
| 46 | { |
| 47 | return vring->swhead == vring->swtail; |
| 48 | } |
| 49 | |
| 50 | static inline u32 wil_vring_next_tail(struct vring *vring) |
| 51 | { |
| 52 | return (vring->swtail + 1) % vring->size; |
| 53 | } |
| 54 | |
| 55 | static inline void wil_vring_advance_head(struct vring *vring, int n) |
| 56 | { |
| 57 | vring->swhead = (vring->swhead + n) % vring->size; |
| 58 | } |
| 59 | |
| 60 | static inline int wil_vring_is_full(struct vring *vring) |
| 61 | { |
| 62 | return wil_vring_next_tail(vring) == vring->swhead; |
| 63 | } |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 64 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 65 | /* Used space in Tx Vring */ |
| 66 | static inline int wil_vring_used_tx(struct vring *vring) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 67 | { |
| 68 | u32 swhead = vring->swhead; |
| 69 | u32 swtail = vring->swtail; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 70 | return (vring->size + swhead - swtail) % vring->size; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 71 | } |
| 72 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 73 | /* Available space in Tx Vring */ |
| 74 | static inline int wil_vring_avail_tx(struct vring *vring) |
| 75 | { |
| 76 | return vring->size - wil_vring_used_tx(vring) - 1; |
| 77 | } |
| 78 | |
| 79 | /* wil_vring_wmark_low - low watermark for available descriptor space */ |
Vladimir Kondratiev | 5bb6423 | 2014-05-27 14:45:46 +0300 | [diff] [blame] | 80 | static inline int wil_vring_wmark_low(struct vring *vring) |
| 81 | { |
| 82 | return vring->size/8; |
| 83 | } |
| 84 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 85 | /* wil_vring_wmark_high - high watermark for available descriptor space */ |
Vladimir Kondratiev | 5bb6423 | 2014-05-27 14:45:46 +0300 | [diff] [blame] | 86 | static inline int wil_vring_wmark_high(struct vring *vring) |
| 87 | { |
| 88 | return vring->size/4; |
| 89 | } |
| 90 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 91 | /* wil_val_in_range - check if value in [min,max) */ |
| 92 | static inline bool wil_val_in_range(int val, int min, int max) |
| 93 | { |
| 94 | return val >= min && val < max; |
| 95 | } |
| 96 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 97 | static int wil_vring_alloc(struct wil6210_priv *wil, struct vring *vring) |
| 98 | { |
| 99 | struct device *dev = wil_to_dev(wil); |
| 100 | size_t sz = vring->size * sizeof(vring->va[0]); |
| 101 | uint i; |
| 102 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 103 | wil_dbg_misc(wil, "%s()\n", __func__); |
| 104 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 105 | BUILD_BUG_ON(sizeof(vring->va[0]) != 32); |
| 106 | |
| 107 | vring->swhead = 0; |
| 108 | vring->swtail = 0; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 109 | vring->ctx = kcalloc(vring->size, sizeof(vring->ctx[0]), GFP_KERNEL); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 110 | if (!vring->ctx) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 111 | vring->va = NULL; |
| 112 | return -ENOMEM; |
| 113 | } |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 114 | /* vring->va should be aligned on its size rounded up to power of 2 |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 115 | * This is granted by the dma_alloc_coherent |
| 116 | */ |
| 117 | vring->va = dma_alloc_coherent(dev, sz, &vring->pa, GFP_KERNEL); |
| 118 | if (!vring->va) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 119 | kfree(vring->ctx); |
| 120 | vring->ctx = NULL; |
| 121 | return -ENOMEM; |
| 122 | } |
| 123 | /* initially, all descriptors are SW owned |
| 124 | * For Tx and Rx, ownership bit is at the same location, thus |
| 125 | * we can use any |
| 126 | */ |
| 127 | for (i = 0; i < vring->size; i++) { |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 128 | volatile struct vring_tx_desc *_d = &vring->va[i].tx; |
| 129 | |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 130 | _d->dma.status = TX_DMA_STATUS_DU; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 131 | } |
| 132 | |
Vladimir Kondratiev | 39c52ee | 2014-05-27 14:45:49 +0300 | [diff] [blame] | 133 | wil_dbg_misc(wil, "vring[%d] 0x%p:%pad 0x%p\n", vring->size, |
| 134 | vring->va, &vring->pa, vring->ctx); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 135 | |
| 136 | return 0; |
| 137 | } |
| 138 | |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 139 | static void wil_txdesc_unmap(struct device *dev, struct vring_tx_desc *d, |
| 140 | struct wil_ctx *ctx) |
| 141 | { |
| 142 | dma_addr_t pa = wil_desc_addr(&d->dma.addr); |
| 143 | u16 dmalen = le16_to_cpu(d->dma.length); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 144 | |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 145 | switch (ctx->mapped_as) { |
| 146 | case wil_mapped_as_single: |
| 147 | dma_unmap_single(dev, pa, dmalen, DMA_TO_DEVICE); |
| 148 | break; |
| 149 | case wil_mapped_as_page: |
| 150 | dma_unmap_page(dev, pa, dmalen, DMA_TO_DEVICE); |
| 151 | break; |
| 152 | default: |
| 153 | break; |
| 154 | } |
| 155 | } |
| 156 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 157 | static void wil_vring_free(struct wil6210_priv *wil, struct vring *vring, |
| 158 | int tx) |
| 159 | { |
| 160 | struct device *dev = wil_to_dev(wil); |
| 161 | size_t sz = vring->size * sizeof(vring->va[0]); |
| 162 | |
Vladimir Kondratiev | ef77285 | 2014-09-10 16:34:31 +0300 | [diff] [blame] | 163 | if (tx) { |
| 164 | int vring_index = vring - wil->vring_tx; |
| 165 | |
| 166 | wil_dbg_misc(wil, "free Tx vring %d [%d] 0x%p:%pad 0x%p\n", |
| 167 | vring_index, vring->size, vring->va, |
| 168 | &vring->pa, vring->ctx); |
| 169 | } else { |
| 170 | wil_dbg_misc(wil, "free Rx vring [%d] 0x%p:%pad 0x%p\n", |
| 171 | vring->size, vring->va, |
| 172 | &vring->pa, vring->ctx); |
| 173 | } |
| 174 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 175 | while (!wil_vring_is_empty(vring)) { |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 176 | dma_addr_t pa; |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 177 | u16 dmalen; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 178 | struct wil_ctx *ctx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 179 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 180 | if (tx) { |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 181 | struct vring_tx_desc dd, *d = ⅆ |
| 182 | volatile struct vring_tx_desc *_d = |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 183 | &vring->va[vring->swtail].tx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 184 | |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 185 | ctx = &vring->ctx[vring->swtail]; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 186 | *d = *_d; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 187 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 188 | if (ctx->skb) |
| 189 | dev_kfree_skb_any(ctx->skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 190 | vring->swtail = wil_vring_next_tail(vring); |
| 191 | } else { /* rx */ |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 192 | struct vring_rx_desc dd, *d = ⅆ |
| 193 | volatile struct vring_rx_desc *_d = |
Vladimir Kondratiev | 4d1ac07 | 2013-07-11 18:03:38 +0300 | [diff] [blame] | 194 | &vring->va[vring->swhead].rx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 195 | |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 196 | ctx = &vring->ctx[vring->swhead]; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 197 | *d = *_d; |
| 198 | pa = wil_desc_addr(&d->dma.addr); |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 199 | dmalen = le16_to_cpu(d->dma.length); |
| 200 | dma_unmap_single(dev, pa, dmalen, DMA_FROM_DEVICE); |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 201 | kfree_skb(ctx->skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 202 | wil_vring_advance_head(vring, 1); |
| 203 | } |
| 204 | } |
| 205 | dma_free_coherent(dev, sz, (void *)vring->va, vring->pa); |
| 206 | kfree(vring->ctx); |
| 207 | vring->pa = 0; |
| 208 | vring->va = NULL; |
| 209 | vring->ctx = NULL; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Allocate one skb for Rx VRING |
| 214 | * |
| 215 | * Safe to call from IRQ |
| 216 | */ |
| 217 | static int wil_vring_alloc_skb(struct wil6210_priv *wil, struct vring *vring, |
| 218 | u32 i, int headroom) |
| 219 | { |
| 220 | struct device *dev = wil_to_dev(wil); |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 221 | unsigned int sz = mtu_max + ETH_HLEN + wil_rx_snaplen(); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 222 | struct vring_rx_desc dd, *d = ⅆ |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 223 | volatile struct vring_rx_desc *_d = &vring->va[i].rx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 224 | dma_addr_t pa; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 225 | struct sk_buff *skb = dev_alloc_skb(sz + headroom); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 226 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 227 | if (unlikely(!skb)) |
| 228 | return -ENOMEM; |
| 229 | |
| 230 | skb_reserve(skb, headroom); |
| 231 | skb_put(skb, sz); |
| 232 | |
| 233 | pa = dma_map_single(dev, skb->data, skb->len, DMA_FROM_DEVICE); |
| 234 | if (unlikely(dma_mapping_error(dev, pa))) { |
| 235 | kfree_skb(skb); |
| 236 | return -ENOMEM; |
| 237 | } |
| 238 | |
Vladimir Kondratiev | 48c963a | 2015-04-30 16:25:06 +0300 | [diff] [blame] | 239 | d->dma.d0 = RX_DMA_D0_CMD_DMA_RT | RX_DMA_D0_CMD_DMA_IT; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 240 | wil_desc_addr_set(&d->dma.addr, pa); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 241 | /* ip_length don't care */ |
| 242 | /* b11 don't care */ |
| 243 | /* error don't care */ |
| 244 | d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 245 | d->dma.length = cpu_to_le16(sz); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 246 | *_d = *d; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 247 | vring->ctx[i].skb = skb; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 248 | |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Adds radiotap header |
| 254 | * |
| 255 | * Any error indicated as "Bad FCS" |
| 256 | * |
| 257 | * Vendor data for 04:ce:14-1 (Wilocity-1) consists of: |
| 258 | * - Rx descriptor: 32 bytes |
| 259 | * - Phy info |
| 260 | */ |
| 261 | static void wil_rx_add_radiotap_header(struct wil6210_priv *wil, |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 262 | struct sk_buff *skb) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 263 | { |
| 264 | struct wireless_dev *wdev = wil->wdev; |
| 265 | struct wil6210_rtap { |
| 266 | struct ieee80211_radiotap_header rthdr; |
| 267 | /* fields should be in the order of bits in rthdr.it_present */ |
| 268 | /* flags */ |
| 269 | u8 flags; |
| 270 | /* channel */ |
| 271 | __le16 chnl_freq __aligned(2); |
| 272 | __le16 chnl_flags; |
| 273 | /* MCS */ |
| 274 | u8 mcs_present; |
| 275 | u8 mcs_flags; |
| 276 | u8 mcs_index; |
| 277 | } __packed; |
| 278 | struct wil6210_rtap_vendor { |
| 279 | struct wil6210_rtap rtap; |
| 280 | /* vendor */ |
| 281 | u8 vendor_oui[3] __aligned(2); |
| 282 | u8 vendor_ns; |
| 283 | __le16 vendor_skip; |
| 284 | u8 vendor_data[0]; |
| 285 | } __packed; |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 286 | struct vring_rx_desc *d = wil_skb_rxdesc(skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 287 | struct wil6210_rtap_vendor *rtap_vendor; |
| 288 | int rtap_len = sizeof(struct wil6210_rtap); |
| 289 | int phy_length = 0; /* phy info header size, bytes */ |
| 290 | static char phy_data[128]; |
| 291 | struct ieee80211_channel *ch = wdev->preset_chandef.chan; |
| 292 | |
| 293 | if (rtap_include_phy_info) { |
| 294 | rtap_len = sizeof(*rtap_vendor) + sizeof(*d); |
| 295 | /* calculate additional length */ |
| 296 | if (d->dma.status & RX_DMA_STATUS_PHY_INFO) { |
| 297 | /** |
| 298 | * PHY info starts from 8-byte boundary |
| 299 | * there are 8-byte lines, last line may be partially |
| 300 | * written (HW bug), thus FW configures for last line |
| 301 | * to be excessive. Driver skips this last line. |
| 302 | */ |
| 303 | int len = min_t(int, 8 + sizeof(phy_data), |
| 304 | wil_rxdesc_phy_length(d)); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 305 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 306 | if (len > 8) { |
| 307 | void *p = skb_tail_pointer(skb); |
| 308 | void *pa = PTR_ALIGN(p, 8); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 309 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 310 | if (skb_tailroom(skb) >= len + (pa - p)) { |
| 311 | phy_length = len - 8; |
| 312 | memcpy(phy_data, pa, phy_length); |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | rtap_len += phy_length; |
| 317 | } |
| 318 | |
| 319 | if (skb_headroom(skb) < rtap_len && |
| 320 | pskb_expand_head(skb, rtap_len, 0, GFP_ATOMIC)) { |
| 321 | wil_err(wil, "Unable to expand headrom to %d\n", rtap_len); |
| 322 | return; |
| 323 | } |
| 324 | |
| 325 | rtap_vendor = (void *)skb_push(skb, rtap_len); |
| 326 | memset(rtap_vendor, 0, rtap_len); |
| 327 | |
| 328 | rtap_vendor->rtap.rthdr.it_version = PKTHDR_RADIOTAP_VERSION; |
| 329 | rtap_vendor->rtap.rthdr.it_len = cpu_to_le16(rtap_len); |
| 330 | rtap_vendor->rtap.rthdr.it_present = cpu_to_le32( |
| 331 | (1 << IEEE80211_RADIOTAP_FLAGS) | |
| 332 | (1 << IEEE80211_RADIOTAP_CHANNEL) | |
| 333 | (1 << IEEE80211_RADIOTAP_MCS)); |
| 334 | if (d->dma.status & RX_DMA_STATUS_ERROR) |
| 335 | rtap_vendor->rtap.flags |= IEEE80211_RADIOTAP_F_BADFCS; |
| 336 | |
| 337 | rtap_vendor->rtap.chnl_freq = cpu_to_le16(ch ? ch->center_freq : 58320); |
| 338 | rtap_vendor->rtap.chnl_flags = cpu_to_le16(0); |
| 339 | |
| 340 | rtap_vendor->rtap.mcs_present = IEEE80211_RADIOTAP_MCS_HAVE_MCS; |
| 341 | rtap_vendor->rtap.mcs_flags = 0; |
| 342 | rtap_vendor->rtap.mcs_index = wil_rxdesc_mcs(d); |
| 343 | |
| 344 | if (rtap_include_phy_info) { |
| 345 | rtap_vendor->rtap.rthdr.it_present |= cpu_to_le32(1 << |
| 346 | IEEE80211_RADIOTAP_VENDOR_NAMESPACE); |
| 347 | /* OUI for Wilocity 04:ce:14 */ |
| 348 | rtap_vendor->vendor_oui[0] = 0x04; |
| 349 | rtap_vendor->vendor_oui[1] = 0xce; |
| 350 | rtap_vendor->vendor_oui[2] = 0x14; |
| 351 | rtap_vendor->vendor_ns = 1; |
| 352 | /* Rx descriptor + PHY data */ |
| 353 | rtap_vendor->vendor_skip = cpu_to_le16(sizeof(*d) + |
| 354 | phy_length); |
| 355 | memcpy(rtap_vendor->vendor_data, (void *)d, sizeof(*d)); |
| 356 | memcpy(rtap_vendor->vendor_data + sizeof(*d), phy_data, |
| 357 | phy_length); |
| 358 | } |
| 359 | } |
| 360 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 361 | /** |
| 362 | * reap 1 frame from @swhead |
| 363 | * |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 364 | * Rx descriptor copied to skb->cb |
| 365 | * |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 366 | * Safe to call from IRQ |
| 367 | */ |
| 368 | static struct sk_buff *wil_vring_reap_rx(struct wil6210_priv *wil, |
| 369 | struct vring *vring) |
| 370 | { |
| 371 | struct device *dev = wil_to_dev(wil); |
| 372 | struct net_device *ndev = wil_to_ndev(wil); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 373 | volatile struct vring_rx_desc *_d; |
| 374 | struct vring_rx_desc *d; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 375 | struct sk_buff *skb; |
| 376 | dma_addr_t pa; |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 377 | unsigned int snaplen = wil_rx_snaplen(); |
| 378 | unsigned int sz = mtu_max + ETH_HLEN + snaplen; |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 379 | u16 dmalen; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 380 | u8 ftype; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 381 | int cid; |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 382 | int i = (int)vring->swhead; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 383 | struct wil_net_stats *stats; |
| 384 | |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 385 | BUILD_BUG_ON(sizeof(struct vring_rx_desc) > sizeof(skb->cb)); |
| 386 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 387 | if (unlikely(wil_vring_is_empty(vring))) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 388 | return NULL; |
| 389 | |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 390 | _d = &vring->va[i].rx; |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 391 | if (unlikely(!(_d->dma.status & RX_DMA_STATUS_DU))) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 392 | /* it is not error, we just reached end of Rx done area */ |
| 393 | return NULL; |
| 394 | } |
| 395 | |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 396 | skb = vring->ctx[i].skb; |
| 397 | vring->ctx[i].skb = NULL; |
| 398 | wil_vring_advance_head(vring, 1); |
| 399 | if (!skb) { |
| 400 | wil_err(wil, "No Rx skb at [%d]\n", i); |
| 401 | return NULL; |
| 402 | } |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 403 | d = wil_skb_rxdesc(skb); |
| 404 | *d = *_d; |
| 405 | pa = wil_desc_addr(&d->dma.addr); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 406 | |
| 407 | dma_unmap_single(dev, pa, sz, DMA_FROM_DEVICE); |
| 408 | dmalen = le16_to_cpu(d->dma.length); |
| 409 | |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 410 | trace_wil6210_rx(i, d); |
| 411 | wil_dbg_txrx(wil, "Rx[%3d] : %d bytes\n", i, dmalen); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 412 | wil_hex_dump_txrx("Rx ", DUMP_PREFIX_NONE, 32, 4, |
| 413 | (const void *)d, sizeof(*d), false); |
| 414 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 415 | if (unlikely(dmalen > sz)) { |
Vladimir Kondratiev | e270045 | 2013-05-12 14:43:33 +0300 | [diff] [blame] | 416 | wil_err(wil, "Rx size too large: %d bytes!\n", dmalen); |
Wei Yongjun | 110dea0 | 2013-05-23 17:10:43 +0800 | [diff] [blame] | 417 | kfree_skb(skb); |
Vladimir Kondratiev | e270045 | 2013-05-12 14:43:33 +0300 | [diff] [blame] | 418 | return NULL; |
| 419 | } |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 420 | skb_trim(skb, dmalen); |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 421 | |
Vladimir Kondratiev | 1cbbcb0 | 2014-01-08 11:50:49 +0200 | [diff] [blame] | 422 | prefetch(skb->data); |
| 423 | |
Vladimir Kondratiev | c0d3771 | 2013-05-12 14:43:34 +0300 | [diff] [blame] | 424 | wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, |
| 425 | skb->data, skb_headlen(skb), false); |
| 426 | |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 427 | cid = wil_rxdesc_cid(d); |
| 428 | stats = &wil->sta[cid].stats; |
| 429 | stats->last_mcs_rx = wil_rxdesc_mcs(d); |
Vladimir Kondratiev | c4a110d | 2015-06-09 14:11:18 +0300 | [diff] [blame^] | 430 | if (stats->last_mcs_rx < ARRAY_SIZE(stats->rx_per_mcs)) |
| 431 | stats->rx_per_mcs[stats->last_mcs_rx]++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 432 | |
| 433 | /* use radiotap header only if required */ |
| 434 | if (ndev->type == ARPHRD_IEEE80211_RADIOTAP) |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 435 | wil_rx_add_radiotap_header(wil, skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 436 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 437 | /* no extra checks if in sniffer mode */ |
| 438 | if (ndev->type != ARPHRD_ETHER) |
| 439 | return skb; |
| 440 | /* |
| 441 | * Non-data frames may be delivered through Rx DMA channel (ex: BAR) |
| 442 | * Driver should recognize it by frame type, that is found |
| 443 | * in Rx descriptor. If type is not data, it is 802.11 frame as is |
| 444 | */ |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 445 | ftype = wil_rxdesc_ftype(d) << 2; |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 446 | if (unlikely(ftype != IEEE80211_FTYPE_DATA)) { |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 447 | wil_dbg_txrx(wil, "Non-data frame ftype 0x%08x\n", ftype); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 448 | /* TODO: process it */ |
| 449 | kfree_skb(skb); |
| 450 | return NULL; |
| 451 | } |
| 452 | |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 453 | if (unlikely(skb->len < ETH_HLEN + snaplen)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 454 | wil_err(wil, "Short frame, len = %d\n", skb->len); |
| 455 | /* TODO: process it (i.e. BAR) */ |
| 456 | kfree_skb(skb); |
| 457 | return NULL; |
| 458 | } |
| 459 | |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 460 | /* L4 IDENT is on when HW calculated checksum, check status |
| 461 | * and in case of error drop the packet |
| 462 | * higher stack layers will handle retransmission (if required) |
| 463 | */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 464 | if (likely(d->dma.status & RX_DMA_STATUS_L4I)) { |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 465 | /* L4 protocol identified, csum calculated */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 466 | if (likely((d->dma.error & RX_DMA_ERROR_L4_ERR) == 0)) |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 467 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
Vladimir Kondratiev | 4a68ab10 | 2013-08-13 15:25:32 +0300 | [diff] [blame] | 468 | /* If HW reports bad checksum, let IP stack re-check it |
| 469 | * For example, HW don't understand Microsoft IP stack that |
| 470 | * mis-calculates TCP checksum - if it should be 0x0, |
| 471 | * it writes 0xffff in violation of RFC 1624 |
| 472 | */ |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 473 | } |
| 474 | |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 475 | if (snaplen) { |
| 476 | /* Packet layout |
| 477 | * +-------+-------+---------+------------+------+ |
| 478 | * | SA(6) | DA(6) | SNAP(6) | ETHTYPE(2) | DATA | |
| 479 | * +-------+-------+---------+------------+------+ |
| 480 | * Need to remove SNAP, shifting SA and DA forward |
| 481 | */ |
| 482 | memmove(skb->data + snaplen, skb->data, 2 * ETH_ALEN); |
| 483 | skb_pull(skb, snaplen); |
| 484 | } |
| 485 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 486 | return skb; |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * allocate and fill up to @count buffers in rx ring |
| 491 | * buffers posted at @swtail |
| 492 | */ |
| 493 | static int wil_rx_refill(struct wil6210_priv *wil, int count) |
| 494 | { |
| 495 | struct net_device *ndev = wil_to_ndev(wil); |
| 496 | struct vring *v = &wil->vring_rx; |
| 497 | u32 next_tail; |
| 498 | int rc = 0; |
| 499 | int headroom = ndev->type == ARPHRD_IEEE80211_RADIOTAP ? |
| 500 | WIL6210_RTAP_SIZE : 0; |
| 501 | |
| 502 | for (; next_tail = wil_vring_next_tail(v), |
| 503 | (next_tail != v->swhead) && (count-- > 0); |
| 504 | v->swtail = next_tail) { |
| 505 | rc = wil_vring_alloc_skb(wil, v, v->swtail, headroom); |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 506 | if (unlikely(rc)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 507 | wil_err(wil, "Error %d in wil_rx_refill[%d]\n", |
| 508 | rc, v->swtail); |
| 509 | break; |
| 510 | } |
| 511 | } |
| 512 | iowrite32(v->swtail, wil->csr + HOSTADDR(v->hwtail)); |
| 513 | |
| 514 | return rc; |
| 515 | } |
| 516 | |
| 517 | /* |
| 518 | * Pass Rx packet to the netif. Update statistics. |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 519 | * Called in softirq context (NAPI poll). |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 520 | */ |
Vladimir Kondratiev | b4490f4 | 2014-02-27 16:20:44 +0200 | [diff] [blame] | 521 | void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 522 | { |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 523 | gro_result_t rc = GRO_NORMAL; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 524 | struct wil6210_priv *wil = ndev_to_wil(ndev); |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 525 | struct wireless_dev *wdev = wil_to_wdev(wil); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 526 | unsigned int len = skb->len; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 527 | struct vring_rx_desc *d = wil_skb_rxdesc(skb); |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 528 | int cid = wil_rxdesc_cid(d); /* always 0..7, no need to check */ |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 529 | struct ethhdr *eth = (void *)skb->data; |
| 530 | /* here looking for DA, not A1, thus Rxdesc's 'mcast' indication |
| 531 | * is not suitable, need to look at data |
| 532 | */ |
| 533 | int mcast = is_multicast_ether_addr(eth->h_dest); |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 534 | struct wil_net_stats *stats = &wil->sta[cid].stats; |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 535 | struct sk_buff *xmit_skb = NULL; |
| 536 | static const char * const gro_res_str[] = { |
| 537 | [GRO_MERGED] = "GRO_MERGED", |
| 538 | [GRO_MERGED_FREE] = "GRO_MERGED_FREE", |
| 539 | [GRO_HELD] = "GRO_HELD", |
| 540 | [GRO_NORMAL] = "GRO_NORMAL", |
| 541 | [GRO_DROP] = "GRO_DROP", |
| 542 | }; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 543 | |
Vladimir Kondratiev | 241804c | 2013-01-28 18:31:02 +0200 | [diff] [blame] | 544 | skb_orphan(skb); |
| 545 | |
Vladimir Kondratiev | 02beaf1 | 2015-03-08 15:42:03 +0200 | [diff] [blame] | 546 | if (wdev->iftype == NL80211_IFTYPE_AP && !wil->ap_isolate) { |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 547 | if (mcast) { |
| 548 | /* send multicast frames both to higher layers in |
| 549 | * local net stack and back to the wireless medium |
| 550 | */ |
| 551 | xmit_skb = skb_copy(skb, GFP_ATOMIC); |
| 552 | } else { |
| 553 | int xmit_cid = wil_find_cid(wil, eth->h_dest); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 554 | |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 555 | if (xmit_cid >= 0) { |
| 556 | /* The destination station is associated to |
| 557 | * this AP (in this VLAN), so send the frame |
| 558 | * directly to it and do not pass it to local |
| 559 | * net stack. |
| 560 | */ |
| 561 | xmit_skb = skb; |
| 562 | skb = NULL; |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | if (xmit_skb) { |
| 567 | /* Send to wireless media and increase priority by 256 to |
| 568 | * keep the received priority instead of reclassifying |
| 569 | * the frame (see cfg80211_classify8021d). |
| 570 | */ |
| 571 | xmit_skb->dev = ndev; |
| 572 | xmit_skb->priority += 256; |
| 573 | xmit_skb->protocol = htons(ETH_P_802_3); |
| 574 | skb_reset_network_header(xmit_skb); |
| 575 | skb_reset_mac_header(xmit_skb); |
| 576 | wil_dbg_txrx(wil, "Rx -> Tx %d bytes\n", len); |
| 577 | dev_queue_xmit(xmit_skb); |
| 578 | } |
| 579 | |
| 580 | if (skb) { /* deliver to local stack */ |
| 581 | |
| 582 | skb->protocol = eth_type_trans(skb, ndev); |
| 583 | rc = napi_gro_receive(&wil->napi_rx, skb); |
| 584 | wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n", |
| 585 | len, gro_res_str[rc]); |
| 586 | } |
| 587 | /* statistics. rc set to GRO_NORMAL for AP bridging */ |
Vladimir Kondratiev | b5998e6 | 2014-03-17 15:34:22 +0200 | [diff] [blame] | 588 | if (unlikely(rc == GRO_DROP)) { |
| 589 | ndev->stats.rx_dropped++; |
| 590 | stats->rx_dropped++; |
| 591 | wil_dbg_txrx(wil, "Rx drop %d bytes\n", len); |
| 592 | } else { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 593 | ndev->stats.rx_packets++; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 594 | stats->rx_packets++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 595 | ndev->stats.rx_bytes += len; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 596 | stats->rx_bytes += len; |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 597 | if (mcast) |
| 598 | ndev->stats.multicast++; |
Vladimir Kondratiev | 194b482 | 2014-06-16 19:37:14 +0300 | [diff] [blame] | 599 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | /** |
| 603 | * Proceed all completed skb's from Rx VRING |
| 604 | * |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 605 | * Safe to call from NAPI poll, i.e. softirq with interrupts enabled |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 606 | */ |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 607 | void wil_rx_handle(struct wil6210_priv *wil, int *quota) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 608 | { |
| 609 | struct net_device *ndev = wil_to_ndev(wil); |
| 610 | struct vring *v = &wil->vring_rx; |
| 611 | struct sk_buff *skb; |
| 612 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 613 | if (unlikely(!v->va)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 614 | wil_err(wil, "Rx IRQ while Rx not yet initialized\n"); |
| 615 | return; |
| 616 | } |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 617 | wil_dbg_txrx(wil, "%s()\n", __func__); |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 618 | while ((*quota > 0) && (NULL != (skb = wil_vring_reap_rx(wil, v)))) { |
| 619 | (*quota)--; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 620 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 621 | if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { |
| 622 | skb->dev = ndev; |
| 623 | skb_reset_mac_header(skb); |
| 624 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 625 | skb->pkt_type = PACKET_OTHERHOST; |
| 626 | skb->protocol = htons(ETH_P_802_2); |
Vladimir Kondratiev | b4490f4 | 2014-02-27 16:20:44 +0200 | [diff] [blame] | 627 | wil_netif_rx_any(skb, ndev); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 628 | } else { |
Vladimir Kondratiev | e4373d8 | 2014-12-23 09:47:21 +0200 | [diff] [blame] | 629 | wil_rx_reorder(wil, skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 630 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 631 | } |
| 632 | wil_rx_refill(wil, v->size); |
| 633 | } |
| 634 | |
Vladimir Kondratiev | d3762b4 | 2014-12-01 15:35:02 +0200 | [diff] [blame] | 635 | int wil_rx_init(struct wil6210_priv *wil, u16 size) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 636 | { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 637 | struct vring *vring = &wil->vring_rx; |
| 638 | int rc; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 639 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 640 | wil_dbg_misc(wil, "%s()\n", __func__); |
| 641 | |
Vladimir Kondratiev | 8bf6adb | 2014-03-17 15:34:17 +0200 | [diff] [blame] | 642 | if (vring->va) { |
| 643 | wil_err(wil, "Rx ring already allocated\n"); |
| 644 | return -EINVAL; |
| 645 | } |
| 646 | |
Vladimir Kondratiev | d3762b4 | 2014-12-01 15:35:02 +0200 | [diff] [blame] | 647 | vring->size = size; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 648 | rc = wil_vring_alloc(wil, vring); |
| 649 | if (rc) |
| 650 | return rc; |
| 651 | |
Vladimir Kondratiev | 47e19af | 2013-01-28 18:30:59 +0200 | [diff] [blame] | 652 | rc = wmi_rx_chain_add(wil, vring); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 653 | if (rc) |
| 654 | goto err_free; |
| 655 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 656 | rc = wil_rx_refill(wil, vring->size); |
| 657 | if (rc) |
| 658 | goto err_free; |
| 659 | |
| 660 | return 0; |
| 661 | err_free: |
| 662 | wil_vring_free(wil, vring, 0); |
| 663 | |
| 664 | return rc; |
| 665 | } |
| 666 | |
| 667 | void wil_rx_fini(struct wil6210_priv *wil) |
| 668 | { |
| 669 | struct vring *vring = &wil->vring_rx; |
| 670 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 671 | wil_dbg_misc(wil, "%s()\n", __func__); |
| 672 | |
Vladimir Kondratiev | 2acb422 | 2013-01-28 18:31:08 +0200 | [diff] [blame] | 673 | if (vring->va) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 674 | wil_vring_free(wil, vring, 0); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size, |
| 678 | int cid, int tid) |
| 679 | { |
| 680 | int rc; |
| 681 | struct wmi_vring_cfg_cmd cmd = { |
| 682 | .action = cpu_to_le32(WMI_VRING_CMD_ADD), |
| 683 | .vring_cfg = { |
| 684 | .tx_sw_ring = { |
Vladimir Kondratiev | 9a06bec | 2014-10-28 16:51:27 +0200 | [diff] [blame] | 685 | .max_mpdu_size = |
Vladimir Kondratiev | c44690a | 2014-12-23 09:47:11 +0200 | [diff] [blame] | 686 | cpu_to_le16(wil_mtu2macbuf(mtu_max)), |
Vladimir Kondratiev | b5d98e9 | 2013-04-18 14:33:51 +0300 | [diff] [blame] | 687 | .ring_size = cpu_to_le16(size), |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 688 | }, |
| 689 | .ringid = id, |
Vladimir Kondratiev | a70abea | 2014-03-17 15:34:05 +0200 | [diff] [blame] | 690 | .cidxtid = mk_cidxtid(cid, tid), |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 691 | .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, |
| 692 | .mac_ctrl = 0, |
| 693 | .to_resolution = 0, |
Vladimir Kondratiev | 3277213 | 2014-12-23 09:47:03 +0200 | [diff] [blame] | 694 | .agg_max_wsize = 0, |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 695 | .schd_params = { |
| 696 | .priority = cpu_to_le16(0), |
| 697 | .timeslot_us = cpu_to_le16(0xfff), |
| 698 | }, |
| 699 | }, |
| 700 | }; |
| 701 | struct { |
| 702 | struct wil6210_mbox_hdr_wmi wmi; |
| 703 | struct wmi_vring_cfg_done_event cmd; |
| 704 | } __packed reply; |
| 705 | struct vring *vring = &wil->vring_tx[id]; |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 706 | struct vring_tx_data *txdata = &wil->vring_tx_data[id]; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 707 | |
Vladimir Kondratiev | e0106ad | 2014-09-10 16:34:45 +0300 | [diff] [blame] | 708 | wil_dbg_misc(wil, "%s() max_mpdu_size %d\n", __func__, |
| 709 | cmd.vring_cfg.tx_sw_ring.max_mpdu_size); |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 710 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 711 | if (vring->va) { |
| 712 | wil_err(wil, "Tx ring [%d] already allocated\n", id); |
| 713 | rc = -EINVAL; |
| 714 | goto out; |
| 715 | } |
| 716 | |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 717 | memset(txdata, 0, sizeof(*txdata)); |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 718 | spin_lock_init(&txdata->lock); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 719 | vring->size = size; |
| 720 | rc = wil_vring_alloc(wil, vring); |
| 721 | if (rc) |
| 722 | goto out; |
| 723 | |
Vladimir Kondratiev | 93ae6d4 | 2014-02-27 16:20:51 +0200 | [diff] [blame] | 724 | wil->vring2cid_tid[id][0] = cid; |
| 725 | wil->vring2cid_tid[id][1] = tid; |
| 726 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 727 | cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 728 | |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 729 | if (!wil->privacy) |
| 730 | txdata->dot1x_open = true; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 731 | rc = wmi_call(wil, WMI_VRING_CFG_CMDID, &cmd, sizeof(cmd), |
| 732 | WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); |
| 733 | if (rc) |
| 734 | goto out_free; |
| 735 | |
Vladimir Kondratiev | b802317 | 2013-03-13 14:12:50 +0200 | [diff] [blame] | 736 | if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 737 | wil_err(wil, "Tx config failed, status 0x%02x\n", |
| 738 | reply.cmd.status); |
Vladimir Kondratiev | c331997 | 2013-01-28 18:31:09 +0200 | [diff] [blame] | 739 | rc = -EINVAL; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 740 | goto out_free; |
| 741 | } |
| 742 | vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); |
| 743 | |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 744 | txdata->enabled = 1; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 745 | if (txdata->dot1x_open && (agg_wsize >= 0)) |
Vladimir Kondratiev | 3a3def8 | 2014-12-23 09:47:05 +0200 | [diff] [blame] | 746 | wil_addba_tx_request(wil, id, agg_wsize); |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 747 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 748 | return 0; |
| 749 | out_free: |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 750 | txdata->dot1x_open = false; |
| 751 | txdata->enabled = 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 752 | wil_vring_free(wil, vring, 1); |
| 753 | out: |
| 754 | |
| 755 | return rc; |
| 756 | } |
| 757 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 758 | int wil_vring_init_bcast(struct wil6210_priv *wil, int id, int size) |
| 759 | { |
| 760 | int rc; |
| 761 | struct wmi_bcast_vring_cfg_cmd cmd = { |
| 762 | .action = cpu_to_le32(WMI_VRING_CMD_ADD), |
| 763 | .vring_cfg = { |
| 764 | .tx_sw_ring = { |
| 765 | .max_mpdu_size = |
| 766 | cpu_to_le16(wil_mtu2macbuf(mtu_max)), |
| 767 | .ring_size = cpu_to_le16(size), |
| 768 | }, |
| 769 | .ringid = id, |
| 770 | .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, |
| 771 | }, |
| 772 | }; |
| 773 | struct { |
| 774 | struct wil6210_mbox_hdr_wmi wmi; |
| 775 | struct wmi_vring_cfg_done_event cmd; |
| 776 | } __packed reply; |
| 777 | struct vring *vring = &wil->vring_tx[id]; |
| 778 | struct vring_tx_data *txdata = &wil->vring_tx_data[id]; |
| 779 | |
| 780 | wil_dbg_misc(wil, "%s() max_mpdu_size %d\n", __func__, |
| 781 | cmd.vring_cfg.tx_sw_ring.max_mpdu_size); |
| 782 | |
| 783 | if (vring->va) { |
| 784 | wil_err(wil, "Tx ring [%d] already allocated\n", id); |
| 785 | rc = -EINVAL; |
| 786 | goto out; |
| 787 | } |
| 788 | |
| 789 | memset(txdata, 0, sizeof(*txdata)); |
| 790 | spin_lock_init(&txdata->lock); |
| 791 | vring->size = size; |
| 792 | rc = wil_vring_alloc(wil, vring); |
| 793 | if (rc) |
| 794 | goto out; |
| 795 | |
| 796 | wil->vring2cid_tid[id][0] = WIL6210_MAX_CID; /* CID */ |
| 797 | wil->vring2cid_tid[id][1] = 0; /* TID */ |
| 798 | |
| 799 | cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); |
| 800 | |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 801 | if (!wil->privacy) |
| 802 | txdata->dot1x_open = true; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 803 | rc = wmi_call(wil, WMI_BCAST_VRING_CFG_CMDID, &cmd, sizeof(cmd), |
| 804 | WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); |
| 805 | if (rc) |
| 806 | goto out_free; |
| 807 | |
| 808 | if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { |
| 809 | wil_err(wil, "Tx config failed, status 0x%02x\n", |
| 810 | reply.cmd.status); |
| 811 | rc = -EINVAL; |
| 812 | goto out_free; |
| 813 | } |
| 814 | vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); |
| 815 | |
| 816 | txdata->enabled = 1; |
| 817 | |
| 818 | return 0; |
| 819 | out_free: |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 820 | txdata->enabled = 0; |
| 821 | txdata->dot1x_open = false; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 822 | wil_vring_free(wil, vring, 1); |
| 823 | out: |
| 824 | |
| 825 | return rc; |
| 826 | } |
| 827 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 828 | void wil_vring_fini_tx(struct wil6210_priv *wil, int id) |
| 829 | { |
| 830 | struct vring *vring = &wil->vring_tx[id]; |
Vladimir Kondratiev | 3a124ed | 2014-12-23 09:47:04 +0200 | [diff] [blame] | 831 | struct vring_tx_data *txdata = &wil->vring_tx_data[id]; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 832 | |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 833 | WARN_ON(!mutex_is_locked(&wil->mutex)); |
| 834 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 835 | if (!vring->va) |
| 836 | return; |
| 837 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 838 | wil_dbg_misc(wil, "%s() id=%d\n", __func__, id); |
| 839 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 840 | spin_lock_bh(&txdata->lock); |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 841 | txdata->dot1x_open = false; |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 842 | txdata->enabled = 0; /* no Tx can be in progress or start anew */ |
| 843 | spin_unlock_bh(&txdata->lock); |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 844 | /* make sure NAPI won't touch this vring */ |
Vladimir Kondratiev | 9419b6a | 2014-12-23 09:47:14 +0200 | [diff] [blame] | 845 | if (test_bit(wil_status_napi_en, wil->status)) |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 846 | napi_synchronize(&wil->napi_tx); |
| 847 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 848 | wil_vring_free(wil, vring, 1); |
Vladimir Kondratiev | 3a124ed | 2014-12-23 09:47:04 +0200 | [diff] [blame] | 849 | memset(txdata, 0, sizeof(*txdata)); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 850 | } |
| 851 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 852 | static struct vring *wil_find_tx_ucast(struct wil6210_priv *wil, |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 853 | struct sk_buff *skb) |
| 854 | { |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 855 | int i; |
| 856 | struct ethhdr *eth = (void *)skb->data; |
| 857 | int cid = wil_find_cid(wil, eth->h_dest); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 858 | |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 859 | if (cid < 0) |
| 860 | return NULL; |
| 861 | |
| 862 | /* TODO: fix for multiple TID */ |
| 863 | for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) { |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 864 | if (!wil->vring_tx_data[i].dot1x_open && |
| 865 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
| 866 | continue; |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 867 | if (wil->vring2cid_tid[i][0] == cid) { |
| 868 | struct vring *v = &wil->vring_tx[i]; |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 869 | |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 870 | wil_dbg_txrx(wil, "%s(%pM) -> [%d]\n", |
| 871 | __func__, eth->h_dest, i); |
| 872 | if (v->va) { |
| 873 | return v; |
| 874 | } else { |
| 875 | wil_dbg_txrx(wil, "vring[%d] not valid\n", i); |
| 876 | return NULL; |
| 877 | } |
| 878 | } |
| 879 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 880 | |
| 881 | return NULL; |
| 882 | } |
| 883 | |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 884 | static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, |
| 885 | struct sk_buff *skb); |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 886 | |
| 887 | static struct vring *wil_find_tx_vring_sta(struct wil6210_priv *wil, |
| 888 | struct sk_buff *skb) |
| 889 | { |
| 890 | struct vring *v; |
| 891 | int i; |
| 892 | u8 cid; |
| 893 | |
| 894 | /* In the STA mode, it is expected to have only 1 VRING |
| 895 | * for the AP we connected to. |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 896 | * find 1-st vring eligible for this skb and use it. |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 897 | */ |
| 898 | for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { |
| 899 | v = &wil->vring_tx[i]; |
| 900 | if (!v->va) |
| 901 | continue; |
| 902 | |
| 903 | cid = wil->vring2cid_tid[i][0]; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 904 | if (cid >= WIL6210_MAX_CID) /* skip BCAST */ |
| 905 | continue; |
| 906 | |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 907 | if (!wil->vring_tx_data[i].dot1x_open && |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 908 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 909 | continue; |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 910 | |
| 911 | wil_dbg_txrx(wil, "Tx -> ring %d\n", i); |
| 912 | |
| 913 | return v; |
| 914 | } |
| 915 | |
| 916 | wil_dbg_txrx(wil, "Tx while no vrings active?\n"); |
| 917 | |
| 918 | return NULL; |
| 919 | } |
| 920 | |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 921 | /* Use one of 2 strategies: |
| 922 | * |
| 923 | * 1. New (real broadcast): |
| 924 | * use dedicated broadcast vring |
| 925 | * 2. Old (pseudo-DMS): |
| 926 | * Find 1-st vring and return it; |
| 927 | * duplicate skb and send it to other active vrings; |
| 928 | * in all cases override dest address to unicast peer's address |
| 929 | * Use old strategy when new is not supported yet: |
| 930 | * - for PBSS |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 931 | */ |
| 932 | static struct vring *wil_find_tx_bcast_1(struct wil6210_priv *wil, |
| 933 | struct sk_buff *skb) |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 934 | { |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 935 | struct vring *v; |
| 936 | int i = wil->bcast_vring; |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 937 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 938 | if (i < 0) |
| 939 | return NULL; |
| 940 | v = &wil->vring_tx[i]; |
| 941 | if (!v->va) |
| 942 | return NULL; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 943 | if (!wil->vring_tx_data[i].dot1x_open && |
| 944 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
| 945 | return NULL; |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 946 | |
| 947 | return v; |
| 948 | } |
| 949 | |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 950 | static void wil_set_da_for_vring(struct wil6210_priv *wil, |
| 951 | struct sk_buff *skb, int vring_index) |
| 952 | { |
| 953 | struct ethhdr *eth = (void *)skb->data; |
| 954 | int cid = wil->vring2cid_tid[vring_index][0]; |
| 955 | |
| 956 | ether_addr_copy(eth->h_dest, wil->sta[cid].addr); |
| 957 | } |
| 958 | |
| 959 | static struct vring *wil_find_tx_bcast_2(struct wil6210_priv *wil, |
| 960 | struct sk_buff *skb) |
| 961 | { |
| 962 | struct vring *v, *v2; |
| 963 | struct sk_buff *skb2; |
| 964 | int i; |
| 965 | u8 cid; |
| 966 | struct ethhdr *eth = (void *)skb->data; |
| 967 | char *src = eth->h_source; |
| 968 | |
| 969 | /* find 1-st vring eligible for data */ |
| 970 | for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { |
| 971 | v = &wil->vring_tx[i]; |
| 972 | if (!v->va) |
| 973 | continue; |
| 974 | |
| 975 | cid = wil->vring2cid_tid[i][0]; |
| 976 | if (cid >= WIL6210_MAX_CID) /* skip BCAST */ |
| 977 | continue; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 978 | if (!wil->vring_tx_data[i].dot1x_open && |
| 979 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 980 | continue; |
| 981 | |
| 982 | /* don't Tx back to source when re-routing Rx->Tx at the AP */ |
| 983 | if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) |
| 984 | continue; |
| 985 | |
| 986 | goto found; |
| 987 | } |
| 988 | |
| 989 | wil_dbg_txrx(wil, "Tx while no vrings active?\n"); |
| 990 | |
| 991 | return NULL; |
| 992 | |
| 993 | found: |
| 994 | wil_dbg_txrx(wil, "BCAST -> ring %d\n", i); |
| 995 | wil_set_da_for_vring(wil, skb, i); |
| 996 | |
| 997 | /* find other active vrings and duplicate skb for each */ |
| 998 | for (i++; i < WIL6210_MAX_TX_RINGS; i++) { |
| 999 | v2 = &wil->vring_tx[i]; |
| 1000 | if (!v2->va) |
| 1001 | continue; |
| 1002 | cid = wil->vring2cid_tid[i][0]; |
| 1003 | if (cid >= WIL6210_MAX_CID) /* skip BCAST */ |
| 1004 | continue; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 1005 | if (!wil->vring_tx_data[i].dot1x_open && |
| 1006 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 1007 | continue; |
| 1008 | |
| 1009 | if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) |
| 1010 | continue; |
| 1011 | |
| 1012 | skb2 = skb_copy(skb, GFP_ATOMIC); |
| 1013 | if (skb2) { |
| 1014 | wil_dbg_txrx(wil, "BCAST DUP -> ring %d\n", i); |
| 1015 | wil_set_da_for_vring(wil, skb2, i); |
| 1016 | wil_tx_vring(wil, v2, skb2); |
| 1017 | } else { |
| 1018 | wil_err(wil, "skb_copy failed\n"); |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | return v; |
| 1023 | } |
| 1024 | |
| 1025 | static struct vring *wil_find_tx_bcast(struct wil6210_priv *wil, |
| 1026 | struct sk_buff *skb) |
| 1027 | { |
| 1028 | struct wireless_dev *wdev = wil->wdev; |
| 1029 | |
| 1030 | if (wdev->iftype != NL80211_IFTYPE_AP) |
| 1031 | return wil_find_tx_bcast_2(wil, skb); |
| 1032 | |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 1033 | return wil_find_tx_bcast_1(wil, skb); |
| 1034 | } |
| 1035 | |
Kirshenbaum Erez | 99b55bd | 2013-06-23 12:59:34 +0300 | [diff] [blame] | 1036 | static int wil_tx_desc_map(struct vring_tx_desc *d, dma_addr_t pa, u32 len, |
| 1037 | int vring_index) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1038 | { |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1039 | wil_desc_addr_set(&d->dma.addr, pa); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1040 | d->dma.ip_length = 0; |
| 1041 | /* 0..6: mac_length; 7:ip_version 0-IP6 1-IP4*/ |
| 1042 | d->dma.b11 = 0/*14 | BIT(7)*/; |
| 1043 | d->dma.error = 0; |
| 1044 | d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 1045 | d->dma.length = cpu_to_le16((u16)len); |
Kirshenbaum Erez | 99b55bd | 2013-06-23 12:59:34 +0300 | [diff] [blame] | 1046 | d->dma.d0 = (vring_index << DMA_CFG_DESC_TX_0_QID_POS); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1047 | d->mac.d[0] = 0; |
| 1048 | d->mac.d[1] = 0; |
| 1049 | d->mac.d[2] = 0; |
| 1050 | d->mac.ucode_cmd = 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1051 | /* translation type: 0 - bypass; 1 - 802.3; 2 - native wifi */ |
| 1052 | d->mac.d[2] = BIT(MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_POS) | |
| 1053 | (1 << MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_POS); |
| 1054 | |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1058 | static inline |
| 1059 | void wil_tx_desc_set_nr_frags(struct vring_tx_desc *d, int nr_frags) |
| 1060 | { |
| 1061 | d->mac.d[2] |= ((nr_frags + 1) << |
| 1062 | MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_POS); |
| 1063 | } |
| 1064 | |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1065 | static int wil_tx_desc_offload_cksum_set(struct wil6210_priv *wil, |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1066 | struct vring_tx_desc *d, |
| 1067 | struct sk_buff *skb) |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1068 | { |
| 1069 | int protocol; |
| 1070 | |
| 1071 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
| 1072 | return 0; |
| 1073 | |
Vladimir Kondratiev | df2d08e | 2014-01-08 11:50:48 +0200 | [diff] [blame] | 1074 | d->dma.b11 = ETH_HLEN; /* MAC header length */ |
| 1075 | |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1076 | switch (skb->protocol) { |
| 1077 | case cpu_to_be16(ETH_P_IP): |
| 1078 | protocol = ip_hdr(skb)->protocol; |
Vladimir Kondratiev | df2d08e | 2014-01-08 11:50:48 +0200 | [diff] [blame] | 1079 | d->dma.b11 |= BIT(DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS); |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1080 | break; |
| 1081 | case cpu_to_be16(ETH_P_IPV6): |
| 1082 | protocol = ipv6_hdr(skb)->nexthdr; |
| 1083 | break; |
| 1084 | default: |
| 1085 | return -EINVAL; |
| 1086 | } |
| 1087 | |
| 1088 | switch (protocol) { |
| 1089 | case IPPROTO_TCP: |
| 1090 | d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); |
| 1091 | /* L4 header len: TCP header length */ |
| 1092 | d->dma.d0 |= |
| 1093 | (tcp_hdrlen(skb) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); |
| 1094 | break; |
| 1095 | case IPPROTO_UDP: |
| 1096 | /* L4 header len: UDP header length */ |
| 1097 | d->dma.d0 |= |
| 1098 | (sizeof(struct udphdr) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); |
| 1099 | break; |
| 1100 | default: |
| 1101 | return -EINVAL; |
| 1102 | } |
| 1103 | |
| 1104 | d->dma.ip_length = skb_network_header_len(skb); |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1105 | /* Enable TCP/UDP checksum */ |
| 1106 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); |
| 1107 | /* Calculate pseudo-header */ |
| 1108 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); |
| 1109 | |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1113 | static int __wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, |
| 1114 | struct sk_buff *skb) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1115 | { |
| 1116 | struct device *dev = wil_to_dev(wil); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1117 | struct vring_tx_desc dd, *d = ⅆ |
| 1118 | volatile struct vring_tx_desc *_d; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1119 | u32 swhead = vring->swhead; |
| 1120 | int avail = wil_vring_avail_tx(vring); |
| 1121 | int nr_frags = skb_shinfo(skb)->nr_frags; |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1122 | uint f = 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1123 | int vring_index = vring - wil->vring_tx; |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1124 | struct vring_tx_data *txdata = &wil->vring_tx_data[vring_index]; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1125 | uint i = swhead; |
| 1126 | dma_addr_t pa; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1127 | int used; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1128 | bool mcast = (vring_index == wil->bcast_vring); |
| 1129 | uint len = skb_headlen(skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1130 | |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1131 | wil_dbg_txrx(wil, "%s()\n", __func__); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1132 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1133 | if (unlikely(!txdata->enabled)) |
| 1134 | return -EINVAL; |
| 1135 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1136 | if (unlikely(avail < 1 + nr_frags)) { |
Vladimir Kondratiev | 70801e1 | 2014-12-01 15:36:03 +0200 | [diff] [blame] | 1137 | wil_err_ratelimited(wil, |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1138 | "Tx ring[%2d] full. No space for %d fragments\n", |
| 1139 | vring_index, 1 + nr_frags); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1140 | return -ENOMEM; |
| 1141 | } |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1142 | _d = &vring->va[i].tx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1143 | |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1144 | pa = dma_map_single(dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1145 | |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1146 | wil_dbg_txrx(wil, "Tx[%2d] skb %d bytes 0x%p -> %pad\n", vring_index, |
| 1147 | skb_headlen(skb), skb->data, &pa); |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1148 | wil_hex_dump_txrx("Tx ", DUMP_PREFIX_OFFSET, 16, 1, |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1149 | skb->data, skb_headlen(skb), false); |
| 1150 | |
| 1151 | if (unlikely(dma_mapping_error(dev, pa))) |
| 1152 | return -EINVAL; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1153 | vring->ctx[i].mapped_as = wil_mapped_as_single; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1154 | /* 1-st segment */ |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1155 | wil_tx_desc_map(d, pa, len, vring_index); |
| 1156 | if (unlikely(mcast)) { |
| 1157 | d->mac.d[0] |= BIT(MAC_CFG_DESC_TX_0_MCS_EN_POS); /* MCS 0 */ |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 1158 | if (unlikely(len > WIL_BCAST_MCS0_LIMIT)) /* set MCS 1 */ |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1159 | d->mac.d[0] |= (1 << MAC_CFG_DESC_TX_0_MCS_INDEX_POS); |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1160 | } |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1161 | /* Process TCP/UDP checksum offloading */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1162 | if (unlikely(wil_tx_desc_offload_cksum_set(wil, d, skb))) { |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1163 | wil_err(wil, "Tx[%2d] Failed to set cksum, drop packet\n", |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1164 | vring_index); |
| 1165 | goto dma_error; |
| 1166 | } |
| 1167 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1168 | vring->ctx[i].nr_frags = nr_frags; |
| 1169 | wil_tx_desc_set_nr_frags(d, nr_frags); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1170 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1171 | /* middle segments */ |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1172 | for (; f < nr_frags; f++) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1173 | const struct skb_frag_struct *frag = |
| 1174 | &skb_shinfo(skb)->frags[f]; |
| 1175 | int len = skb_frag_size(frag); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1176 | |
Vladimir Kondratiev | e59d16c | 2015-02-01 10:55:12 +0200 | [diff] [blame] | 1177 | *_d = *d; |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1178 | wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", vring_index, i); |
| 1179 | wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, |
| 1180 | (const void *)d, sizeof(*d), false); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1181 | i = (swhead + f + 1) % vring->size; |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1182 | _d = &vring->va[i].tx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1183 | pa = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1184 | DMA_TO_DEVICE); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1185 | if (unlikely(dma_mapping_error(dev, pa))) |
| 1186 | goto dma_error; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1187 | vring->ctx[i].mapped_as = wil_mapped_as_page; |
Kirshenbaum Erez | 99b55bd | 2013-06-23 12:59:34 +0300 | [diff] [blame] | 1188 | wil_tx_desc_map(d, pa, len, vring_index); |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1189 | /* no need to check return code - |
| 1190 | * if it succeeded for 1-st descriptor, |
| 1191 | * it will succeed here too |
| 1192 | */ |
| 1193 | wil_tx_desc_offload_cksum_set(wil, d, skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1194 | } |
| 1195 | /* for the last seg only */ |
| 1196 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS); |
Kirshenbaum Erez | 668b2bb | 2013-06-23 12:59:35 +0300 | [diff] [blame] | 1197 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1198 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1199 | *_d = *d; |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1200 | wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", vring_index, i); |
| 1201 | wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, |
| 1202 | (const void *)d, sizeof(*d), false); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1203 | |
Vladimir Kondratiev | 6cdadd4 | 2013-07-11 18:03:41 +0300 | [diff] [blame] | 1204 | /* hold reference to skb |
| 1205 | * to prevent skb release before accounting |
| 1206 | * in case of immediate "tx done" |
| 1207 | */ |
| 1208 | vring->ctx[i].skb = skb_get(skb); |
| 1209 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1210 | /* performance monitoring */ |
| 1211 | used = wil_vring_used_tx(vring); |
| 1212 | if (wil_val_in_range(vring_idle_trsh, |
| 1213 | used, used + nr_frags + 1)) { |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1214 | txdata->idle += get_cycles() - txdata->last_idle; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1215 | wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", |
| 1216 | vring_index, used, used + nr_frags + 1); |
| 1217 | } |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1218 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1219 | /* advance swhead */ |
| 1220 | wil_vring_advance_head(vring, nr_frags + 1); |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1221 | wil_dbg_txrx(wil, "Tx[%2d] swhead %d -> %d\n", vring_index, swhead, |
| 1222 | vring->swhead); |
Vladimir Kondratiev | 9865809 | 2013-05-12 14:43:35 +0300 | [diff] [blame] | 1223 | trace_wil6210_tx(vring_index, swhead, skb->len, nr_frags); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1224 | iowrite32(vring->swhead, wil->csr + HOSTADDR(vring->hwtail)); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1225 | |
| 1226 | return 0; |
| 1227 | dma_error: |
| 1228 | /* unmap what we have mapped */ |
Vladimir Kondratiev | c2a146f | 2013-07-21 11:34:36 +0300 | [diff] [blame] | 1229 | nr_frags = f + 1; /* frags mapped + one for skb head */ |
| 1230 | for (f = 0; f < nr_frags; f++) { |
Vladimir Kondratiev | c2a146f | 2013-07-21 11:34:36 +0300 | [diff] [blame] | 1231 | struct wil_ctx *ctx; |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 1232 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1233 | i = (swhead + f) % vring->size; |
Vladimir Kondratiev | c2a146f | 2013-07-21 11:34:36 +0300 | [diff] [blame] | 1234 | ctx = &vring->ctx[i]; |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1235 | _d = &vring->va[i].tx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1236 | *d = *_d; |
| 1237 | _d->dma.status = TX_DMA_STATUS_DU; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1238 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1239 | |
| 1240 | if (ctx->skb) |
| 1241 | dev_kfree_skb_any(ctx->skb); |
| 1242 | |
| 1243 | memset(ctx, 0, sizeof(*ctx)); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1244 | } |
| 1245 | |
| 1246 | return -EINVAL; |
| 1247 | } |
| 1248 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1249 | static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, |
| 1250 | struct sk_buff *skb) |
| 1251 | { |
| 1252 | int vring_index = vring - wil->vring_tx; |
| 1253 | struct vring_tx_data *txdata = &wil->vring_tx_data[vring_index]; |
| 1254 | int rc; |
| 1255 | |
| 1256 | spin_lock(&txdata->lock); |
| 1257 | rc = __wil_tx_vring(wil, vring, skb); |
| 1258 | spin_unlock(&txdata->lock); |
| 1259 | return rc; |
| 1260 | } |
| 1261 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1262 | netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
| 1263 | { |
| 1264 | struct wil6210_priv *wil = ndev_to_wil(ndev); |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 1265 | struct ethhdr *eth = (void *)skb->data; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1266 | bool bcast = is_multicast_ether_addr(eth->h_dest); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1267 | struct vring *vring; |
Vladimir Kondratiev | aa27dea | 2014-03-17 15:34:11 +0200 | [diff] [blame] | 1268 | static bool pr_once_fw; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1269 | int rc; |
| 1270 | |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1271 | wil_dbg_txrx(wil, "%s()\n", __func__); |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1272 | if (unlikely(!test_bit(wil_status_fwready, wil->status))) { |
Vladimir Kondratiev | aa27dea | 2014-03-17 15:34:11 +0200 | [diff] [blame] | 1273 | if (!pr_once_fw) { |
| 1274 | wil_err(wil, "FW not ready\n"); |
| 1275 | pr_once_fw = true; |
| 1276 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1277 | goto drop; |
| 1278 | } |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1279 | if (unlikely(!test_bit(wil_status_fwconnected, wil->status))) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1280 | wil_err(wil, "FW not connected\n"); |
| 1281 | goto drop; |
| 1282 | } |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1283 | if (unlikely(wil->wdev->iftype == NL80211_IFTYPE_MONITOR)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1284 | wil_err(wil, "Xmit in monitor mode not supported\n"); |
| 1285 | goto drop; |
| 1286 | } |
Vladimir Kondratiev | aa27dea | 2014-03-17 15:34:11 +0200 | [diff] [blame] | 1287 | pr_once_fw = false; |
Vladimir Kondratiev | d58db4e | 2013-06-09 09:12:54 +0300 | [diff] [blame] | 1288 | |
| 1289 | /* find vring */ |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 1290 | if (wil->wdev->iftype == NL80211_IFTYPE_STATION) { |
| 1291 | /* in STA mode (ESS), all to same VRING */ |
| 1292 | vring = wil_find_tx_vring_sta(wil, skb); |
| 1293 | } else { /* direct communication, find matching VRING */ |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1294 | vring = bcast ? wil_find_tx_bcast(wil, skb) : |
| 1295 | wil_find_tx_ucast(wil, skb); |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 1296 | } |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1297 | if (unlikely(!vring)) { |
Vladimir Kondratiev | 5aed139 | 2014-06-16 19:37:15 +0300 | [diff] [blame] | 1298 | wil_dbg_txrx(wil, "No Tx VRING found for %pM\n", eth->h_dest); |
Vladimir Kondratiev | d58db4e | 2013-06-09 09:12:54 +0300 | [diff] [blame] | 1299 | goto drop; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1300 | } |
Vladimir Kondratiev | d58db4e | 2013-06-09 09:12:54 +0300 | [diff] [blame] | 1301 | /* set up vring entry */ |
| 1302 | rc = wil_tx_vring(wil, vring, skb); |
| 1303 | |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1304 | /* do we still have enough room in the vring? */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1305 | if (unlikely(wil_vring_avail_tx(vring) < wil_vring_wmark_low(vring))) { |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1306 | netif_tx_stop_all_queues(wil_to_ndev(wil)); |
Vladimir Kondratiev | 55f8f68 | 2014-06-16 19:37:23 +0300 | [diff] [blame] | 1307 | wil_dbg_txrx(wil, "netif_tx_stop : ring full\n"); |
| 1308 | } |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1309 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1310 | switch (rc) { |
| 1311 | case 0: |
Vladimir Kondratiev | 795ce73 | 2013-01-28 18:31:00 +0200 | [diff] [blame] | 1312 | /* statistics will be updated on the tx_complete */ |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1313 | dev_kfree_skb_any(skb); |
| 1314 | return NETDEV_TX_OK; |
| 1315 | case -ENOMEM: |
| 1316 | return NETDEV_TX_BUSY; |
| 1317 | default: |
Vladimir Kondratiev | afda8bb | 2013-01-28 18:31:07 +0200 | [diff] [blame] | 1318 | break; /* goto drop; */ |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1319 | } |
| 1320 | drop: |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1321 | ndev->stats.tx_dropped++; |
| 1322 | dev_kfree_skb_any(skb); |
| 1323 | |
| 1324 | return NET_XMIT_DROP; |
| 1325 | } |
| 1326 | |
Vladimir Kondratiev | 713c8a2 | 2015-01-25 10:52:49 +0200 | [diff] [blame] | 1327 | static inline bool wil_need_txstat(struct sk_buff *skb) |
| 1328 | { |
| 1329 | struct ethhdr *eth = (void *)skb->data; |
| 1330 | |
| 1331 | return is_unicast_ether_addr(eth->h_dest) && skb->sk && |
| 1332 | (skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS); |
| 1333 | } |
| 1334 | |
| 1335 | static inline void wil_consume_skb(struct sk_buff *skb, bool acked) |
| 1336 | { |
| 1337 | if (unlikely(wil_need_txstat(skb))) |
| 1338 | skb_complete_wifi_ack(skb, acked); |
| 1339 | else |
| 1340 | acked ? dev_consume_skb_any(skb) : dev_kfree_skb_any(skb); |
| 1341 | } |
| 1342 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1343 | /** |
| 1344 | * Clean up transmitted skb's from the Tx VRING |
| 1345 | * |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1346 | * Return number of descriptors cleared |
| 1347 | * |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1348 | * Safe to call from IRQ |
| 1349 | */ |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1350 | int wil_tx_complete(struct wil6210_priv *wil, int ringid) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1351 | { |
Vladimir Kondratiev | 795ce73 | 2013-01-28 18:31:00 +0200 | [diff] [blame] | 1352 | struct net_device *ndev = wil_to_ndev(wil); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1353 | struct device *dev = wil_to_dev(wil); |
| 1354 | struct vring *vring = &wil->vring_tx[ringid]; |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 1355 | struct vring_tx_data *txdata = &wil->vring_tx_data[ringid]; |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1356 | int done = 0; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 1357 | int cid = wil->vring2cid_tid[ringid][0]; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1358 | struct wil_net_stats *stats = NULL; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1359 | volatile struct vring_tx_desc *_d; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1360 | int used_before_complete; |
| 1361 | int used_new; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1362 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1363 | if (unlikely(!vring->va)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1364 | wil_err(wil, "Tx irq[%d]: vring not initialized\n", ringid); |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1365 | return 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1366 | } |
| 1367 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1368 | if (unlikely(!txdata->enabled)) { |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 1369 | wil_info(wil, "Tx irq[%d]: vring disabled\n", ringid); |
| 1370 | return 0; |
| 1371 | } |
| 1372 | |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1373 | wil_dbg_txrx(wil, "%s(%d)\n", __func__, ringid); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1374 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1375 | used_before_complete = wil_vring_used_tx(vring); |
| 1376 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1377 | if (cid < WIL6210_MAX_CID) |
| 1378 | stats = &wil->sta[cid].stats; |
| 1379 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1380 | while (!wil_vring_is_empty(vring)) { |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1381 | int new_swtail; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1382 | struct wil_ctx *ctx = &vring->ctx[vring->swtail]; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1383 | /** |
| 1384 | * For the fragmented skb, HW will set DU bit only for the |
| 1385 | * last fragment. look for it |
| 1386 | */ |
| 1387 | int lf = (vring->swtail + ctx->nr_frags) % vring->size; |
| 1388 | /* TODO: check we are not past head */ |
Vladimir Kondratiev | 4de41be | 2013-04-18 14:33:52 +0300 | [diff] [blame] | 1389 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1390 | _d = &vring->va[lf].tx; |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1391 | if (unlikely(!(_d->dma.status & TX_DMA_STATUS_DU))) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1392 | break; |
| 1393 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1394 | new_swtail = (lf + 1) % vring->size; |
| 1395 | while (vring->swtail != new_swtail) { |
| 1396 | struct vring_tx_desc dd, *d = ⅆ |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1397 | u16 dmalen; |
Vladimir Kondratiev | 76dfa4b | 2014-07-14 09:49:39 +0300 | [diff] [blame] | 1398 | struct sk_buff *skb; |
| 1399 | |
| 1400 | ctx = &vring->ctx[vring->swtail]; |
| 1401 | skb = ctx->skb; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1402 | _d = &vring->va[vring->swtail].tx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1403 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1404 | *d = *_d; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1405 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1406 | dmalen = le16_to_cpu(d->dma.length); |
| 1407 | trace_wil6210_tx_done(ringid, vring->swtail, dmalen, |
| 1408 | d->dma.error); |
| 1409 | wil_dbg_txrx(wil, |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1410 | "TxC[%2d][%3d] : %d bytes, status 0x%02x err 0x%02x\n", |
| 1411 | ringid, vring->swtail, dmalen, |
| 1412 | d->dma.status, d->dma.error); |
| 1413 | wil_hex_dump_txrx("TxCD ", DUMP_PREFIX_NONE, 32, 4, |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1414 | (const void *)d, sizeof(*d), false); |
| 1415 | |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1416 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1417 | |
| 1418 | if (skb) { |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1419 | if (likely(d->dma.error == 0)) { |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1420 | ndev->stats.tx_packets++; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1421 | ndev->stats.tx_bytes += skb->len; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1422 | if (stats) { |
| 1423 | stats->tx_packets++; |
| 1424 | stats->tx_bytes += skb->len; |
| 1425 | } |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1426 | } else { |
| 1427 | ndev->stats.tx_errors++; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1428 | if (stats) |
| 1429 | stats->tx_errors++; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1430 | } |
Vladimir Kondratiev | 713c8a2 | 2015-01-25 10:52:49 +0200 | [diff] [blame] | 1431 | wil_consume_skb(skb, d->dma.error == 0); |
Vladimir Kondratiev | 795ce73 | 2013-01-28 18:31:00 +0200 | [diff] [blame] | 1432 | } |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1433 | memset(ctx, 0, sizeof(*ctx)); |
| 1434 | /* There is no need to touch HW descriptor: |
| 1435 | * - ststus bit TX_DMA_STATUS_DU is set by design, |
| 1436 | * so hardware will not try to process this desc., |
| 1437 | * - rest of descriptor will be initialized on Tx. |
| 1438 | */ |
| 1439 | vring->swtail = wil_vring_next_tail(vring); |
| 1440 | done++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1441 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1442 | } |
Vladimir Kondratiev | 67c3e1b | 2014-06-16 19:37:04 +0300 | [diff] [blame] | 1443 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1444 | /* performance monitoring */ |
| 1445 | used_new = wil_vring_used_tx(vring); |
| 1446 | if (wil_val_in_range(vring_idle_trsh, |
| 1447 | used_new, used_before_complete)) { |
| 1448 | wil_dbg_txrx(wil, "Ring[%2d] idle %d -> %d\n", |
| 1449 | ringid, used_before_complete, used_new); |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1450 | txdata->last_idle = get_cycles(); |
| 1451 | } |
Vladimir Kondratiev | 67c3e1b | 2014-06-16 19:37:04 +0300 | [diff] [blame] | 1452 | |
Vladimir Kondratiev | 55f8f68 | 2014-06-16 19:37:23 +0300 | [diff] [blame] | 1453 | if (wil_vring_avail_tx(vring) > wil_vring_wmark_high(vring)) { |
| 1454 | wil_dbg_txrx(wil, "netif_tx_wake : ring not full\n"); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1455 | netif_tx_wake_all_queues(wil_to_ndev(wil)); |
Vladimir Kondratiev | 55f8f68 | 2014-06-16 19:37:23 +0300 | [diff] [blame] | 1456 | } |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1457 | |
| 1458 | return done; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1459 | } |