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 | 9b1ba7b | 2015-11-06 12:50:44 +0200 | [diff] [blame^] | 163 | lockdep_assert_held(&wil->mutex); |
Vladimir Kondratiev | ef77285 | 2014-09-10 16:34:31 +0300 | [diff] [blame] | 164 | if (tx) { |
| 165 | int vring_index = vring - wil->vring_tx; |
| 166 | |
| 167 | wil_dbg_misc(wil, "free Tx vring %d [%d] 0x%p:%pad 0x%p\n", |
| 168 | vring_index, vring->size, vring->va, |
| 169 | &vring->pa, vring->ctx); |
| 170 | } else { |
| 171 | wil_dbg_misc(wil, "free Rx vring [%d] 0x%p:%pad 0x%p\n", |
| 172 | vring->size, vring->va, |
| 173 | &vring->pa, vring->ctx); |
| 174 | } |
| 175 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 176 | while (!wil_vring_is_empty(vring)) { |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 177 | dma_addr_t pa; |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 178 | u16 dmalen; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 179 | struct wil_ctx *ctx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 180 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 181 | if (tx) { |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 182 | struct vring_tx_desc dd, *d = ⅆ |
| 183 | volatile struct vring_tx_desc *_d = |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 184 | &vring->va[vring->swtail].tx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 185 | |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 186 | ctx = &vring->ctx[vring->swtail]; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 187 | *d = *_d; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 188 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 189 | if (ctx->skb) |
| 190 | dev_kfree_skb_any(ctx->skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 191 | vring->swtail = wil_vring_next_tail(vring); |
| 192 | } else { /* rx */ |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 193 | struct vring_rx_desc dd, *d = ⅆ |
| 194 | volatile struct vring_rx_desc *_d = |
Vladimir Kondratiev | 4d1ac07 | 2013-07-11 18:03:38 +0300 | [diff] [blame] | 195 | &vring->va[vring->swhead].rx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 196 | |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 197 | ctx = &vring->ctx[vring->swhead]; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 198 | *d = *_d; |
| 199 | pa = wil_desc_addr(&d->dma.addr); |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 200 | dmalen = le16_to_cpu(d->dma.length); |
| 201 | dma_unmap_single(dev, pa, dmalen, DMA_FROM_DEVICE); |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 202 | kfree_skb(ctx->skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 203 | wil_vring_advance_head(vring, 1); |
| 204 | } |
| 205 | } |
| 206 | dma_free_coherent(dev, sz, (void *)vring->va, vring->pa); |
| 207 | kfree(vring->ctx); |
| 208 | vring->pa = 0; |
| 209 | vring->va = NULL; |
| 210 | vring->ctx = NULL; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Allocate one skb for Rx VRING |
| 215 | * |
| 216 | * Safe to call from IRQ |
| 217 | */ |
| 218 | static int wil_vring_alloc_skb(struct wil6210_priv *wil, struct vring *vring, |
| 219 | u32 i, int headroom) |
| 220 | { |
| 221 | struct device *dev = wil_to_dev(wil); |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 222 | unsigned int sz = mtu_max + ETH_HLEN + wil_rx_snaplen(); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 223 | struct vring_rx_desc dd, *d = ⅆ |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 224 | volatile struct vring_rx_desc *_d = &vring->va[i].rx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 225 | dma_addr_t pa; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 226 | struct sk_buff *skb = dev_alloc_skb(sz + headroom); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 227 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 228 | if (unlikely(!skb)) |
| 229 | return -ENOMEM; |
| 230 | |
| 231 | skb_reserve(skb, headroom); |
| 232 | skb_put(skb, sz); |
| 233 | |
| 234 | pa = dma_map_single(dev, skb->data, skb->len, DMA_FROM_DEVICE); |
| 235 | if (unlikely(dma_mapping_error(dev, pa))) { |
| 236 | kfree_skb(skb); |
| 237 | return -ENOMEM; |
| 238 | } |
| 239 | |
Vladimir Kondratiev | 48c963a | 2015-04-30 16:25:06 +0300 | [diff] [blame] | 240 | 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] | 241 | wil_desc_addr_set(&d->dma.addr, pa); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 242 | /* ip_length don't care */ |
| 243 | /* b11 don't care */ |
| 244 | /* error don't care */ |
| 245 | d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 246 | d->dma.length = cpu_to_le16(sz); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 247 | *_d = *d; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 248 | vring->ctx[i].skb = skb; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 249 | |
| 250 | return 0; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Adds radiotap header |
| 255 | * |
| 256 | * Any error indicated as "Bad FCS" |
| 257 | * |
| 258 | * Vendor data for 04:ce:14-1 (Wilocity-1) consists of: |
| 259 | * - Rx descriptor: 32 bytes |
| 260 | * - Phy info |
| 261 | */ |
| 262 | static void wil_rx_add_radiotap_header(struct wil6210_priv *wil, |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 263 | struct sk_buff *skb) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 264 | { |
| 265 | struct wireless_dev *wdev = wil->wdev; |
| 266 | struct wil6210_rtap { |
| 267 | struct ieee80211_radiotap_header rthdr; |
| 268 | /* fields should be in the order of bits in rthdr.it_present */ |
| 269 | /* flags */ |
| 270 | u8 flags; |
| 271 | /* channel */ |
| 272 | __le16 chnl_freq __aligned(2); |
| 273 | __le16 chnl_flags; |
| 274 | /* MCS */ |
| 275 | u8 mcs_present; |
| 276 | u8 mcs_flags; |
| 277 | u8 mcs_index; |
| 278 | } __packed; |
| 279 | struct wil6210_rtap_vendor { |
| 280 | struct wil6210_rtap rtap; |
| 281 | /* vendor */ |
| 282 | u8 vendor_oui[3] __aligned(2); |
| 283 | u8 vendor_ns; |
| 284 | __le16 vendor_skip; |
| 285 | u8 vendor_data[0]; |
| 286 | } __packed; |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 287 | struct vring_rx_desc *d = wil_skb_rxdesc(skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 288 | struct wil6210_rtap_vendor *rtap_vendor; |
| 289 | int rtap_len = sizeof(struct wil6210_rtap); |
| 290 | int phy_length = 0; /* phy info header size, bytes */ |
| 291 | static char phy_data[128]; |
| 292 | struct ieee80211_channel *ch = wdev->preset_chandef.chan; |
| 293 | |
| 294 | if (rtap_include_phy_info) { |
| 295 | rtap_len = sizeof(*rtap_vendor) + sizeof(*d); |
| 296 | /* calculate additional length */ |
| 297 | if (d->dma.status & RX_DMA_STATUS_PHY_INFO) { |
| 298 | /** |
| 299 | * PHY info starts from 8-byte boundary |
| 300 | * there are 8-byte lines, last line may be partially |
| 301 | * written (HW bug), thus FW configures for last line |
| 302 | * to be excessive. Driver skips this last line. |
| 303 | */ |
| 304 | int len = min_t(int, 8 + sizeof(phy_data), |
| 305 | wil_rxdesc_phy_length(d)); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 306 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 307 | if (len > 8) { |
| 308 | void *p = skb_tail_pointer(skb); |
| 309 | void *pa = PTR_ALIGN(p, 8); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 310 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 311 | if (skb_tailroom(skb) >= len + (pa - p)) { |
| 312 | phy_length = len - 8; |
| 313 | memcpy(phy_data, pa, phy_length); |
| 314 | } |
| 315 | } |
| 316 | } |
| 317 | rtap_len += phy_length; |
| 318 | } |
| 319 | |
| 320 | if (skb_headroom(skb) < rtap_len && |
| 321 | pskb_expand_head(skb, rtap_len, 0, GFP_ATOMIC)) { |
| 322 | wil_err(wil, "Unable to expand headrom to %d\n", rtap_len); |
| 323 | return; |
| 324 | } |
| 325 | |
| 326 | rtap_vendor = (void *)skb_push(skb, rtap_len); |
| 327 | memset(rtap_vendor, 0, rtap_len); |
| 328 | |
| 329 | rtap_vendor->rtap.rthdr.it_version = PKTHDR_RADIOTAP_VERSION; |
| 330 | rtap_vendor->rtap.rthdr.it_len = cpu_to_le16(rtap_len); |
| 331 | rtap_vendor->rtap.rthdr.it_present = cpu_to_le32( |
| 332 | (1 << IEEE80211_RADIOTAP_FLAGS) | |
| 333 | (1 << IEEE80211_RADIOTAP_CHANNEL) | |
| 334 | (1 << IEEE80211_RADIOTAP_MCS)); |
| 335 | if (d->dma.status & RX_DMA_STATUS_ERROR) |
| 336 | rtap_vendor->rtap.flags |= IEEE80211_RADIOTAP_F_BADFCS; |
| 337 | |
| 338 | rtap_vendor->rtap.chnl_freq = cpu_to_le16(ch ? ch->center_freq : 58320); |
| 339 | rtap_vendor->rtap.chnl_flags = cpu_to_le16(0); |
| 340 | |
| 341 | rtap_vendor->rtap.mcs_present = IEEE80211_RADIOTAP_MCS_HAVE_MCS; |
| 342 | rtap_vendor->rtap.mcs_flags = 0; |
| 343 | rtap_vendor->rtap.mcs_index = wil_rxdesc_mcs(d); |
| 344 | |
| 345 | if (rtap_include_phy_info) { |
| 346 | rtap_vendor->rtap.rthdr.it_present |= cpu_to_le32(1 << |
| 347 | IEEE80211_RADIOTAP_VENDOR_NAMESPACE); |
| 348 | /* OUI for Wilocity 04:ce:14 */ |
| 349 | rtap_vendor->vendor_oui[0] = 0x04; |
| 350 | rtap_vendor->vendor_oui[1] = 0xce; |
| 351 | rtap_vendor->vendor_oui[2] = 0x14; |
| 352 | rtap_vendor->vendor_ns = 1; |
| 353 | /* Rx descriptor + PHY data */ |
| 354 | rtap_vendor->vendor_skip = cpu_to_le16(sizeof(*d) + |
| 355 | phy_length); |
| 356 | memcpy(rtap_vendor->vendor_data, (void *)d, sizeof(*d)); |
| 357 | memcpy(rtap_vendor->vendor_data + sizeof(*d), phy_data, |
| 358 | phy_length); |
| 359 | } |
| 360 | } |
| 361 | |
Vladimir Kondratiev | a831334 | 2015-10-04 10:23:23 +0300 | [diff] [blame] | 362 | /* similar to ieee80211_ version, but FC contain only 1-st byte */ |
| 363 | static inline int wil_is_back_req(u8 fc) |
| 364 | { |
| 365 | return (fc & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == |
| 366 | (IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ); |
| 367 | } |
| 368 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 369 | /** |
| 370 | * reap 1 frame from @swhead |
| 371 | * |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 372 | * Rx descriptor copied to skb->cb |
| 373 | * |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 374 | * Safe to call from IRQ |
| 375 | */ |
| 376 | static struct sk_buff *wil_vring_reap_rx(struct wil6210_priv *wil, |
| 377 | struct vring *vring) |
| 378 | { |
| 379 | struct device *dev = wil_to_dev(wil); |
| 380 | struct net_device *ndev = wil_to_ndev(wil); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 381 | volatile struct vring_rx_desc *_d; |
| 382 | struct vring_rx_desc *d; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 383 | struct sk_buff *skb; |
| 384 | dma_addr_t pa; |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 385 | unsigned int snaplen = wil_rx_snaplen(); |
| 386 | unsigned int sz = mtu_max + ETH_HLEN + snaplen; |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 387 | u16 dmalen; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 388 | u8 ftype; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 389 | int cid; |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 390 | int i; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 391 | struct wil_net_stats *stats; |
| 392 | |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 393 | BUILD_BUG_ON(sizeof(struct vring_rx_desc) > sizeof(skb->cb)); |
| 394 | |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 395 | again: |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 396 | if (unlikely(wil_vring_is_empty(vring))) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 397 | return NULL; |
| 398 | |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 399 | i = (int)vring->swhead; |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 400 | _d = &vring->va[i].rx; |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 401 | if (unlikely(!(_d->dma.status & RX_DMA_STATUS_DU))) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 402 | /* it is not error, we just reached end of Rx done area */ |
| 403 | return NULL; |
| 404 | } |
| 405 | |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 406 | skb = vring->ctx[i].skb; |
| 407 | vring->ctx[i].skb = NULL; |
| 408 | wil_vring_advance_head(vring, 1); |
| 409 | if (!skb) { |
| 410 | wil_err(wil, "No Rx skb at [%d]\n", i); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 411 | goto again; |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 412 | } |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 413 | d = wil_skb_rxdesc(skb); |
| 414 | *d = *_d; |
| 415 | pa = wil_desc_addr(&d->dma.addr); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 416 | |
| 417 | dma_unmap_single(dev, pa, sz, DMA_FROM_DEVICE); |
| 418 | dmalen = le16_to_cpu(d->dma.length); |
| 419 | |
Vladimir Kondratiev | 148416a | 2015-03-15 16:00:16 +0200 | [diff] [blame] | 420 | trace_wil6210_rx(i, d); |
| 421 | wil_dbg_txrx(wil, "Rx[%3d] : %d bytes\n", i, dmalen); |
Vladimir Kondratiev | a831334 | 2015-10-04 10:23:23 +0300 | [diff] [blame] | 422 | wil_hex_dump_txrx("RxD ", DUMP_PREFIX_NONE, 32, 4, |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 423 | (const void *)d, sizeof(*d), false); |
| 424 | |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 425 | cid = wil_rxdesc_cid(d); |
| 426 | stats = &wil->sta[cid].stats; |
| 427 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 428 | if (unlikely(dmalen > sz)) { |
Vladimir Kondratiev | e270045 | 2013-05-12 14:43:33 +0300 | [diff] [blame] | 429 | wil_err(wil, "Rx size too large: %d bytes!\n", dmalen); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 430 | stats->rx_large_frame++; |
Wei Yongjun | 110dea0 | 2013-05-23 17:10:43 +0800 | [diff] [blame] | 431 | kfree_skb(skb); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 432 | goto again; |
Vladimir Kondratiev | e270045 | 2013-05-12 14:43:33 +0300 | [diff] [blame] | 433 | } |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 434 | skb_trim(skb, dmalen); |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 435 | |
Vladimir Kondratiev | 1cbbcb0 | 2014-01-08 11:50:49 +0200 | [diff] [blame] | 436 | prefetch(skb->data); |
| 437 | |
Vladimir Kondratiev | c0d3771 | 2013-05-12 14:43:34 +0300 | [diff] [blame] | 438 | wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, |
| 439 | skb->data, skb_headlen(skb), false); |
| 440 | |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 441 | stats->last_mcs_rx = wil_rxdesc_mcs(d); |
Vladimir Kondratiev | c4a110d | 2015-06-09 14:11:18 +0300 | [diff] [blame] | 442 | if (stats->last_mcs_rx < ARRAY_SIZE(stats->rx_per_mcs)) |
| 443 | stats->rx_per_mcs[stats->last_mcs_rx]++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 444 | |
| 445 | /* use radiotap header only if required */ |
| 446 | if (ndev->type == ARPHRD_IEEE80211_RADIOTAP) |
Vladimir Kondratiev | 33e6116 | 2013-04-18 14:33:50 +0300 | [diff] [blame] | 447 | wil_rx_add_radiotap_header(wil, skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 448 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 449 | /* no extra checks if in sniffer mode */ |
| 450 | if (ndev->type != ARPHRD_ETHER) |
| 451 | return skb; |
Vladimir Kondratiev | a831334 | 2015-10-04 10:23:23 +0300 | [diff] [blame] | 452 | /* Non-data frames may be delivered through Rx DMA channel (ex: BAR) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 453 | * Driver should recognize it by frame type, that is found |
| 454 | * in Rx descriptor. If type is not data, it is 802.11 frame as is |
| 455 | */ |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 456 | ftype = wil_rxdesc_ftype(d) << 2; |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 457 | if (unlikely(ftype != IEEE80211_FTYPE_DATA)) { |
Vladimir Kondratiev | a831334 | 2015-10-04 10:23:23 +0300 | [diff] [blame] | 458 | u8 fc1 = wil_rxdesc_fc1(d); |
| 459 | int mid = wil_rxdesc_mid(d); |
| 460 | int tid = wil_rxdesc_tid(d); |
| 461 | u16 seq = wil_rxdesc_seq(d); |
| 462 | |
| 463 | wil_dbg_txrx(wil, |
| 464 | "Non-data frame FC[7:0] 0x%02x MID %d CID %d TID %d Seq 0x%03x\n", |
| 465 | fc1, mid, cid, tid, seq); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 466 | stats->rx_non_data_frame++; |
Vladimir Kondratiev | a831334 | 2015-10-04 10:23:23 +0300 | [diff] [blame] | 467 | if (wil_is_back_req(fc1)) { |
| 468 | wil_dbg_txrx(wil, |
| 469 | "BAR: MID %d CID %d TID %d Seq 0x%03x\n", |
| 470 | mid, cid, tid, seq); |
| 471 | wil_rx_bar(wil, cid, tid, seq); |
| 472 | } else { |
| 473 | /* print again all info. One can enable only this |
| 474 | * without overhead for printing every Rx frame |
| 475 | */ |
| 476 | wil_dbg_txrx(wil, |
| 477 | "Unhandled non-data frame FC[7:0] 0x%02x MID %d CID %d TID %d Seq 0x%03x\n", |
| 478 | fc1, mid, cid, tid, seq); |
| 479 | wil_hex_dump_txrx("RxD ", DUMP_PREFIX_NONE, 32, 4, |
| 480 | (const void *)d, sizeof(*d), false); |
| 481 | wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, |
| 482 | skb->data, skb_headlen(skb), false); |
| 483 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 484 | kfree_skb(skb); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 485 | goto again; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 486 | } |
| 487 | |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 488 | if (unlikely(skb->len < ETH_HLEN + snaplen)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 489 | wil_err(wil, "Short frame, len = %d\n", skb->len); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 490 | stats->rx_short_frame++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 491 | kfree_skb(skb); |
Vladimir Kondratiev | 3b282bc | 2015-10-04 10:23:19 +0300 | [diff] [blame] | 492 | goto again; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 493 | } |
| 494 | |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 495 | /* L4 IDENT is on when HW calculated checksum, check status |
| 496 | * and in case of error drop the packet |
| 497 | * higher stack layers will handle retransmission (if required) |
| 498 | */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 499 | if (likely(d->dma.status & RX_DMA_STATUS_L4I)) { |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 500 | /* L4 protocol identified, csum calculated */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 501 | if (likely((d->dma.error & RX_DMA_ERROR_L4_ERR) == 0)) |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 502 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
Vladimir Kondratiev | 4a68ab10 | 2013-08-13 15:25:32 +0300 | [diff] [blame] | 503 | /* If HW reports bad checksum, let IP stack re-check it |
| 504 | * For example, HW don't understand Microsoft IP stack that |
| 505 | * mis-calculates TCP checksum - if it should be 0x0, |
| 506 | * it writes 0xffff in violation of RFC 1624 |
| 507 | */ |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 508 | } |
| 509 | |
Vladimir Kondratiev | c406ea7 | 2015-03-15 16:00:19 +0200 | [diff] [blame] | 510 | if (snaplen) { |
| 511 | /* Packet layout |
| 512 | * +-------+-------+---------+------------+------+ |
| 513 | * | SA(6) | DA(6) | SNAP(6) | ETHTYPE(2) | DATA | |
| 514 | * +-------+-------+---------+------------+------+ |
| 515 | * Need to remove SNAP, shifting SA and DA forward |
| 516 | */ |
| 517 | memmove(skb->data + snaplen, skb->data, 2 * ETH_ALEN); |
| 518 | skb_pull(skb, snaplen); |
| 519 | } |
| 520 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 521 | return skb; |
| 522 | } |
| 523 | |
| 524 | /** |
| 525 | * allocate and fill up to @count buffers in rx ring |
| 526 | * buffers posted at @swtail |
| 527 | */ |
| 528 | static int wil_rx_refill(struct wil6210_priv *wil, int count) |
| 529 | { |
| 530 | struct net_device *ndev = wil_to_ndev(wil); |
| 531 | struct vring *v = &wil->vring_rx; |
| 532 | u32 next_tail; |
| 533 | int rc = 0; |
| 534 | int headroom = ndev->type == ARPHRD_IEEE80211_RADIOTAP ? |
| 535 | WIL6210_RTAP_SIZE : 0; |
| 536 | |
| 537 | for (; next_tail = wil_vring_next_tail(v), |
| 538 | (next_tail != v->swhead) && (count-- > 0); |
| 539 | v->swtail = next_tail) { |
| 540 | rc = wil_vring_alloc_skb(wil, v, v->swtail, headroom); |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 541 | if (unlikely(rc)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 542 | wil_err(wil, "Error %d in wil_rx_refill[%d]\n", |
| 543 | rc, v->swtail); |
| 544 | break; |
| 545 | } |
| 546 | } |
Vladimir Kondratiev | b9eeb51 | 2015-07-30 13:52:03 +0300 | [diff] [blame] | 547 | wil_w(wil, v->hwtail, v->swtail); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 548 | |
| 549 | return rc; |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * Pass Rx packet to the netif. Update statistics. |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 554 | * Called in softirq context (NAPI poll). |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 555 | */ |
Vladimir Kondratiev | b4490f4 | 2014-02-27 16:20:44 +0200 | [diff] [blame] | 556 | 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] | 557 | { |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 558 | gro_result_t rc = GRO_NORMAL; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 559 | struct wil6210_priv *wil = ndev_to_wil(ndev); |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 560 | struct wireless_dev *wdev = wil_to_wdev(wil); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 561 | unsigned int len = skb->len; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 562 | struct vring_rx_desc *d = wil_skb_rxdesc(skb); |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 563 | 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] | 564 | struct ethhdr *eth = (void *)skb->data; |
| 565 | /* here looking for DA, not A1, thus Rxdesc's 'mcast' indication |
| 566 | * is not suitable, need to look at data |
| 567 | */ |
| 568 | int mcast = is_multicast_ether_addr(eth->h_dest); |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 569 | struct wil_net_stats *stats = &wil->sta[cid].stats; |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 570 | struct sk_buff *xmit_skb = NULL; |
| 571 | static const char * const gro_res_str[] = { |
| 572 | [GRO_MERGED] = "GRO_MERGED", |
| 573 | [GRO_MERGED_FREE] = "GRO_MERGED_FREE", |
| 574 | [GRO_HELD] = "GRO_HELD", |
| 575 | [GRO_NORMAL] = "GRO_NORMAL", |
| 576 | [GRO_DROP] = "GRO_DROP", |
| 577 | }; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 578 | |
Vladimir Shulman | 0553640 | 2015-07-30 13:52:04 +0300 | [diff] [blame] | 579 | if (ndev->features & NETIF_F_RXHASH) |
| 580 | /* fake L4 to ensure it won't be re-calculated later |
| 581 | * set hash to any non-zero value to activate rps |
| 582 | * mechanism, core will be chosen according |
| 583 | * to user-level rps configuration. |
| 584 | */ |
| 585 | skb_set_hash(skb, 1, PKT_HASH_TYPE_L4); |
| 586 | |
Vladimir Kondratiev | 241804c | 2013-01-28 18:31:02 +0200 | [diff] [blame] | 587 | skb_orphan(skb); |
| 588 | |
Vladimir Kondratiev | 02beaf1 | 2015-03-08 15:42:03 +0200 | [diff] [blame] | 589 | if (wdev->iftype == NL80211_IFTYPE_AP && !wil->ap_isolate) { |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 590 | if (mcast) { |
| 591 | /* send multicast frames both to higher layers in |
| 592 | * local net stack and back to the wireless medium |
| 593 | */ |
| 594 | xmit_skb = skb_copy(skb, GFP_ATOMIC); |
| 595 | } else { |
| 596 | int xmit_cid = wil_find_cid(wil, eth->h_dest); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 597 | |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 598 | if (xmit_cid >= 0) { |
| 599 | /* The destination station is associated to |
| 600 | * this AP (in this VLAN), so send the frame |
| 601 | * directly to it and do not pass it to local |
| 602 | * net stack. |
| 603 | */ |
| 604 | xmit_skb = skb; |
| 605 | skb = NULL; |
| 606 | } |
| 607 | } |
| 608 | } |
| 609 | if (xmit_skb) { |
| 610 | /* Send to wireless media and increase priority by 256 to |
| 611 | * keep the received priority instead of reclassifying |
| 612 | * the frame (see cfg80211_classify8021d). |
| 613 | */ |
| 614 | xmit_skb->dev = ndev; |
| 615 | xmit_skb->priority += 256; |
| 616 | xmit_skb->protocol = htons(ETH_P_802_3); |
| 617 | skb_reset_network_header(xmit_skb); |
| 618 | skb_reset_mac_header(xmit_skb); |
| 619 | wil_dbg_txrx(wil, "Rx -> Tx %d bytes\n", len); |
| 620 | dev_queue_xmit(xmit_skb); |
| 621 | } |
| 622 | |
| 623 | if (skb) { /* deliver to local stack */ |
| 624 | |
| 625 | skb->protocol = eth_type_trans(skb, ndev); |
| 626 | rc = napi_gro_receive(&wil->napi_rx, skb); |
| 627 | wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n", |
| 628 | len, gro_res_str[rc]); |
| 629 | } |
| 630 | /* statistics. rc set to GRO_NORMAL for AP bridging */ |
Vladimir Kondratiev | b5998e6 | 2014-03-17 15:34:22 +0200 | [diff] [blame] | 631 | if (unlikely(rc == GRO_DROP)) { |
| 632 | ndev->stats.rx_dropped++; |
| 633 | stats->rx_dropped++; |
| 634 | wil_dbg_txrx(wil, "Rx drop %d bytes\n", len); |
| 635 | } else { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 636 | ndev->stats.rx_packets++; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 637 | stats->rx_packets++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 638 | ndev->stats.rx_bytes += len; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 639 | stats->rx_bytes += len; |
Vladimir Kondratiev | c42da99 | 2015-03-08 15:42:02 +0200 | [diff] [blame] | 640 | if (mcast) |
| 641 | ndev->stats.multicast++; |
Vladimir Kondratiev | 194b482 | 2014-06-16 19:37:14 +0300 | [diff] [blame] | 642 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | /** |
| 646 | * Proceed all completed skb's from Rx VRING |
| 647 | * |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 648 | * Safe to call from NAPI poll, i.e. softirq with interrupts enabled |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 649 | */ |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 650 | void wil_rx_handle(struct wil6210_priv *wil, int *quota) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 651 | { |
| 652 | struct net_device *ndev = wil_to_ndev(wil); |
| 653 | struct vring *v = &wil->vring_rx; |
| 654 | struct sk_buff *skb; |
| 655 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 656 | if (unlikely(!v->va)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 657 | wil_err(wil, "Rx IRQ while Rx not yet initialized\n"); |
| 658 | return; |
| 659 | } |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 660 | wil_dbg_txrx(wil, "%s()\n", __func__); |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 661 | while ((*quota > 0) && (NULL != (skb = wil_vring_reap_rx(wil, v)))) { |
| 662 | (*quota)--; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 663 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 664 | if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { |
| 665 | skb->dev = ndev; |
| 666 | skb_reset_mac_header(skb); |
| 667 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 668 | skb->pkt_type = PACKET_OTHERHOST; |
| 669 | skb->protocol = htons(ETH_P_802_2); |
Vladimir Kondratiev | b4490f4 | 2014-02-27 16:20:44 +0200 | [diff] [blame] | 670 | wil_netif_rx_any(skb, ndev); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 671 | } else { |
Vladimir Kondratiev | e4373d8 | 2014-12-23 09:47:21 +0200 | [diff] [blame] | 672 | wil_rx_reorder(wil, skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 673 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 674 | } |
| 675 | wil_rx_refill(wil, v->size); |
| 676 | } |
| 677 | |
Vladimir Kondratiev | d3762b4 | 2014-12-01 15:35:02 +0200 | [diff] [blame] | 678 | int wil_rx_init(struct wil6210_priv *wil, u16 size) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 679 | { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 680 | struct vring *vring = &wil->vring_rx; |
| 681 | int rc; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 682 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 683 | wil_dbg_misc(wil, "%s()\n", __func__); |
| 684 | |
Vladimir Kondratiev | 8bf6adb | 2014-03-17 15:34:17 +0200 | [diff] [blame] | 685 | if (vring->va) { |
| 686 | wil_err(wil, "Rx ring already allocated\n"); |
| 687 | return -EINVAL; |
| 688 | } |
| 689 | |
Vladimir Kondratiev | d3762b4 | 2014-12-01 15:35:02 +0200 | [diff] [blame] | 690 | vring->size = size; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 691 | rc = wil_vring_alloc(wil, vring); |
| 692 | if (rc) |
| 693 | return rc; |
| 694 | |
Vladimir Kondratiev | 47e19af | 2013-01-28 18:30:59 +0200 | [diff] [blame] | 695 | rc = wmi_rx_chain_add(wil, vring); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 696 | if (rc) |
| 697 | goto err_free; |
| 698 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 699 | rc = wil_rx_refill(wil, vring->size); |
| 700 | if (rc) |
| 701 | goto err_free; |
| 702 | |
| 703 | return 0; |
| 704 | err_free: |
| 705 | wil_vring_free(wil, vring, 0); |
| 706 | |
| 707 | return rc; |
| 708 | } |
| 709 | |
| 710 | void wil_rx_fini(struct wil6210_priv *wil) |
| 711 | { |
| 712 | struct vring *vring = &wil->vring_rx; |
| 713 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 714 | wil_dbg_misc(wil, "%s()\n", __func__); |
| 715 | |
Vladimir Kondratiev | 2acb422 | 2013-01-28 18:31:08 +0200 | [diff] [blame] | 716 | if (vring->va) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 717 | wil_vring_free(wil, vring, 0); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 718 | } |
| 719 | |
| 720 | int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size, |
| 721 | int cid, int tid) |
| 722 | { |
| 723 | int rc; |
| 724 | struct wmi_vring_cfg_cmd cmd = { |
| 725 | .action = cpu_to_le32(WMI_VRING_CMD_ADD), |
| 726 | .vring_cfg = { |
| 727 | .tx_sw_ring = { |
Vladimir Kondratiev | 9a06bec | 2014-10-28 16:51:27 +0200 | [diff] [blame] | 728 | .max_mpdu_size = |
Vladimir Kondratiev | c44690a | 2014-12-23 09:47:11 +0200 | [diff] [blame] | 729 | cpu_to_le16(wil_mtu2macbuf(mtu_max)), |
Vladimir Kondratiev | b5d98e9 | 2013-04-18 14:33:51 +0300 | [diff] [blame] | 730 | .ring_size = cpu_to_le16(size), |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 731 | }, |
| 732 | .ringid = id, |
Vladimir Kondratiev | a70abea | 2014-03-17 15:34:05 +0200 | [diff] [blame] | 733 | .cidxtid = mk_cidxtid(cid, tid), |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 734 | .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, |
| 735 | .mac_ctrl = 0, |
| 736 | .to_resolution = 0, |
Vladimir Kondratiev | 3277213 | 2014-12-23 09:47:03 +0200 | [diff] [blame] | 737 | .agg_max_wsize = 0, |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 738 | .schd_params = { |
| 739 | .priority = cpu_to_le16(0), |
| 740 | .timeslot_us = cpu_to_le16(0xfff), |
| 741 | }, |
| 742 | }, |
| 743 | }; |
| 744 | struct { |
| 745 | struct wil6210_mbox_hdr_wmi wmi; |
| 746 | struct wmi_vring_cfg_done_event cmd; |
| 747 | } __packed reply; |
| 748 | struct vring *vring = &wil->vring_tx[id]; |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 749 | struct vring_tx_data *txdata = &wil->vring_tx_data[id]; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 750 | |
Vladimir Kondratiev | e0106ad | 2014-09-10 16:34:45 +0300 | [diff] [blame] | 751 | wil_dbg_misc(wil, "%s() max_mpdu_size %d\n", __func__, |
| 752 | cmd.vring_cfg.tx_sw_ring.max_mpdu_size); |
Vladimir Kondratiev | 9b1ba7b | 2015-11-06 12:50:44 +0200 | [diff] [blame^] | 753 | lockdep_assert_held(&wil->mutex); |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 754 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 755 | if (vring->va) { |
| 756 | wil_err(wil, "Tx ring [%d] already allocated\n", id); |
| 757 | rc = -EINVAL; |
| 758 | goto out; |
| 759 | } |
| 760 | |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 761 | memset(txdata, 0, sizeof(*txdata)); |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 762 | spin_lock_init(&txdata->lock); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 763 | vring->size = size; |
| 764 | rc = wil_vring_alloc(wil, vring); |
| 765 | if (rc) |
| 766 | goto out; |
| 767 | |
Vladimir Kondratiev | 93ae6d4 | 2014-02-27 16:20:51 +0200 | [diff] [blame] | 768 | wil->vring2cid_tid[id][0] = cid; |
| 769 | wil->vring2cid_tid[id][1] = tid; |
| 770 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 771 | 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] | 772 | |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 773 | if (!wil->privacy) |
| 774 | txdata->dot1x_open = true; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 775 | rc = wmi_call(wil, WMI_VRING_CFG_CMDID, &cmd, sizeof(cmd), |
| 776 | WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); |
| 777 | if (rc) |
| 778 | goto out_free; |
| 779 | |
Vladimir Kondratiev | b802317 | 2013-03-13 14:12:50 +0200 | [diff] [blame] | 780 | if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 781 | wil_err(wil, "Tx config failed, status 0x%02x\n", |
| 782 | reply.cmd.status); |
Vladimir Kondratiev | c331997 | 2013-01-28 18:31:09 +0200 | [diff] [blame] | 783 | rc = -EINVAL; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 784 | goto out_free; |
| 785 | } |
| 786 | vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); |
| 787 | |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 788 | txdata->enabled = 1; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 789 | if (txdata->dot1x_open && (agg_wsize >= 0)) |
Vladimir Kondratiev | 3a3def8 | 2014-12-23 09:47:05 +0200 | [diff] [blame] | 790 | wil_addba_tx_request(wil, id, agg_wsize); |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 791 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 792 | return 0; |
| 793 | out_free: |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 794 | txdata->dot1x_open = false; |
| 795 | txdata->enabled = 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 796 | wil_vring_free(wil, vring, 1); |
| 797 | out: |
| 798 | |
| 799 | return rc; |
| 800 | } |
| 801 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 802 | int wil_vring_init_bcast(struct wil6210_priv *wil, int id, int size) |
| 803 | { |
| 804 | int rc; |
| 805 | struct wmi_bcast_vring_cfg_cmd cmd = { |
| 806 | .action = cpu_to_le32(WMI_VRING_CMD_ADD), |
| 807 | .vring_cfg = { |
| 808 | .tx_sw_ring = { |
| 809 | .max_mpdu_size = |
| 810 | cpu_to_le16(wil_mtu2macbuf(mtu_max)), |
| 811 | .ring_size = cpu_to_le16(size), |
| 812 | }, |
| 813 | .ringid = id, |
| 814 | .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, |
| 815 | }, |
| 816 | }; |
| 817 | struct { |
| 818 | struct wil6210_mbox_hdr_wmi wmi; |
| 819 | struct wmi_vring_cfg_done_event cmd; |
| 820 | } __packed reply; |
| 821 | struct vring *vring = &wil->vring_tx[id]; |
| 822 | struct vring_tx_data *txdata = &wil->vring_tx_data[id]; |
| 823 | |
| 824 | wil_dbg_misc(wil, "%s() max_mpdu_size %d\n", __func__, |
| 825 | cmd.vring_cfg.tx_sw_ring.max_mpdu_size); |
Vladimir Kondratiev | 9b1ba7b | 2015-11-06 12:50:44 +0200 | [diff] [blame^] | 826 | lockdep_assert_held(&wil->mutex); |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 827 | |
| 828 | if (vring->va) { |
| 829 | wil_err(wil, "Tx ring [%d] already allocated\n", id); |
| 830 | rc = -EINVAL; |
| 831 | goto out; |
| 832 | } |
| 833 | |
| 834 | memset(txdata, 0, sizeof(*txdata)); |
| 835 | spin_lock_init(&txdata->lock); |
| 836 | vring->size = size; |
| 837 | rc = wil_vring_alloc(wil, vring); |
| 838 | if (rc) |
| 839 | goto out; |
| 840 | |
| 841 | wil->vring2cid_tid[id][0] = WIL6210_MAX_CID; /* CID */ |
| 842 | wil->vring2cid_tid[id][1] = 0; /* TID */ |
| 843 | |
| 844 | cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); |
| 845 | |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 846 | if (!wil->privacy) |
| 847 | txdata->dot1x_open = true; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 848 | rc = wmi_call(wil, WMI_BCAST_VRING_CFG_CMDID, &cmd, sizeof(cmd), |
| 849 | WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); |
| 850 | if (rc) |
| 851 | goto out_free; |
| 852 | |
| 853 | if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { |
| 854 | wil_err(wil, "Tx config failed, status 0x%02x\n", |
| 855 | reply.cmd.status); |
| 856 | rc = -EINVAL; |
| 857 | goto out_free; |
| 858 | } |
| 859 | vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); |
| 860 | |
| 861 | txdata->enabled = 1; |
| 862 | |
| 863 | return 0; |
| 864 | out_free: |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 865 | txdata->enabled = 0; |
| 866 | txdata->dot1x_open = false; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 867 | wil_vring_free(wil, vring, 1); |
| 868 | out: |
| 869 | |
| 870 | return rc; |
| 871 | } |
| 872 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 873 | void wil_vring_fini_tx(struct wil6210_priv *wil, int id) |
| 874 | { |
| 875 | struct vring *vring = &wil->vring_tx[id]; |
Vladimir Kondratiev | 3a124ed | 2014-12-23 09:47:04 +0200 | [diff] [blame] | 876 | struct vring_tx_data *txdata = &wil->vring_tx_data[id]; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 877 | |
Vladimir Kondratiev | 9b1ba7b | 2015-11-06 12:50:44 +0200 | [diff] [blame^] | 878 | lockdep_assert_held(&wil->mutex); |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 879 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 880 | if (!vring->va) |
| 881 | return; |
| 882 | |
Vladimir Kondratiev | 9cf10d6 | 2014-09-10 16:34:36 +0300 | [diff] [blame] | 883 | wil_dbg_misc(wil, "%s() id=%d\n", __func__, id); |
| 884 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 885 | spin_lock_bh(&txdata->lock); |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 886 | txdata->dot1x_open = false; |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 887 | txdata->enabled = 0; /* no Tx can be in progress or start anew */ |
| 888 | spin_unlock_bh(&txdata->lock); |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 889 | /* make sure NAPI won't touch this vring */ |
Vladimir Kondratiev | 9419b6a | 2014-12-23 09:47:14 +0200 | [diff] [blame] | 890 | if (test_bit(wil_status_napi_en, wil->status)) |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 891 | napi_synchronize(&wil->napi_tx); |
| 892 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 893 | wil_vring_free(wil, vring, 1); |
Vladimir Kondratiev | 3a124ed | 2014-12-23 09:47:04 +0200 | [diff] [blame] | 894 | memset(txdata, 0, sizeof(*txdata)); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 895 | } |
| 896 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 897 | static struct vring *wil_find_tx_ucast(struct wil6210_priv *wil, |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 898 | struct sk_buff *skb) |
| 899 | { |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 900 | int i; |
| 901 | struct ethhdr *eth = (void *)skb->data; |
| 902 | int cid = wil_find_cid(wil, eth->h_dest); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 903 | |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 904 | if (cid < 0) |
| 905 | return NULL; |
| 906 | |
| 907 | /* TODO: fix for multiple TID */ |
| 908 | for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) { |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 909 | if (!wil->vring_tx_data[i].dot1x_open && |
| 910 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
| 911 | continue; |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 912 | if (wil->vring2cid_tid[i][0] == cid) { |
| 913 | struct vring *v = &wil->vring_tx[i]; |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 914 | |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 915 | wil_dbg_txrx(wil, "%s(%pM) -> [%d]\n", |
| 916 | __func__, eth->h_dest, i); |
| 917 | if (v->va) { |
| 918 | return v; |
| 919 | } else { |
| 920 | wil_dbg_txrx(wil, "vring[%d] not valid\n", i); |
| 921 | return NULL; |
| 922 | } |
| 923 | } |
| 924 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 925 | |
| 926 | return NULL; |
| 927 | } |
| 928 | |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 929 | static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, |
| 930 | struct sk_buff *skb); |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 931 | |
| 932 | static struct vring *wil_find_tx_vring_sta(struct wil6210_priv *wil, |
| 933 | struct sk_buff *skb) |
| 934 | { |
| 935 | struct vring *v; |
| 936 | int i; |
| 937 | u8 cid; |
| 938 | |
| 939 | /* In the STA mode, it is expected to have only 1 VRING |
| 940 | * for the AP we connected to. |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 941 | * find 1-st vring eligible for this skb and use it. |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 942 | */ |
| 943 | for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { |
| 944 | v = &wil->vring_tx[i]; |
| 945 | if (!v->va) |
| 946 | continue; |
| 947 | |
| 948 | cid = wil->vring2cid_tid[i][0]; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 949 | if (cid >= WIL6210_MAX_CID) /* skip BCAST */ |
| 950 | continue; |
| 951 | |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 952 | if (!wil->vring_tx_data[i].dot1x_open && |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 953 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 954 | continue; |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 955 | |
| 956 | wil_dbg_txrx(wil, "Tx -> ring %d\n", i); |
| 957 | |
| 958 | return v; |
| 959 | } |
| 960 | |
| 961 | wil_dbg_txrx(wil, "Tx while no vrings active?\n"); |
| 962 | |
| 963 | return NULL; |
| 964 | } |
| 965 | |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 966 | /* Use one of 2 strategies: |
| 967 | * |
| 968 | * 1. New (real broadcast): |
| 969 | * use dedicated broadcast vring |
| 970 | * 2. Old (pseudo-DMS): |
| 971 | * Find 1-st vring and return it; |
| 972 | * duplicate skb and send it to other active vrings; |
| 973 | * in all cases override dest address to unicast peer's address |
| 974 | * Use old strategy when new is not supported yet: |
| 975 | * - for PBSS |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 976 | */ |
| 977 | static struct vring *wil_find_tx_bcast_1(struct wil6210_priv *wil, |
| 978 | struct sk_buff *skb) |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 979 | { |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 980 | struct vring *v; |
| 981 | int i = wil->bcast_vring; |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 982 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 983 | if (i < 0) |
| 984 | return NULL; |
| 985 | v = &wil->vring_tx[i]; |
| 986 | if (!v->va) |
| 987 | return NULL; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 988 | if (!wil->vring_tx_data[i].dot1x_open && |
| 989 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
| 990 | return NULL; |
Vladimir Kondratiev | fb3cac5 | 2014-02-27 16:20:46 +0200 | [diff] [blame] | 991 | |
| 992 | return v; |
| 993 | } |
| 994 | |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 995 | static void wil_set_da_for_vring(struct wil6210_priv *wil, |
| 996 | struct sk_buff *skb, int vring_index) |
| 997 | { |
| 998 | struct ethhdr *eth = (void *)skb->data; |
| 999 | int cid = wil->vring2cid_tid[vring_index][0]; |
| 1000 | |
| 1001 | ether_addr_copy(eth->h_dest, wil->sta[cid].addr); |
| 1002 | } |
| 1003 | |
| 1004 | static struct vring *wil_find_tx_bcast_2(struct wil6210_priv *wil, |
| 1005 | struct sk_buff *skb) |
| 1006 | { |
| 1007 | struct vring *v, *v2; |
| 1008 | struct sk_buff *skb2; |
| 1009 | int i; |
| 1010 | u8 cid; |
| 1011 | struct ethhdr *eth = (void *)skb->data; |
| 1012 | char *src = eth->h_source; |
| 1013 | |
| 1014 | /* find 1-st vring eligible for data */ |
| 1015 | for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { |
| 1016 | v = &wil->vring_tx[i]; |
| 1017 | if (!v->va) |
| 1018 | continue; |
| 1019 | |
| 1020 | cid = wil->vring2cid_tid[i][0]; |
| 1021 | if (cid >= WIL6210_MAX_CID) /* skip BCAST */ |
| 1022 | continue; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 1023 | if (!wil->vring_tx_data[i].dot1x_open && |
| 1024 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 1025 | continue; |
| 1026 | |
| 1027 | /* don't Tx back to source when re-routing Rx->Tx at the AP */ |
| 1028 | if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) |
| 1029 | continue; |
| 1030 | |
| 1031 | goto found; |
| 1032 | } |
| 1033 | |
| 1034 | wil_dbg_txrx(wil, "Tx while no vrings active?\n"); |
| 1035 | |
| 1036 | return NULL; |
| 1037 | |
| 1038 | found: |
| 1039 | wil_dbg_txrx(wil, "BCAST -> ring %d\n", i); |
| 1040 | wil_set_da_for_vring(wil, skb, i); |
| 1041 | |
| 1042 | /* find other active vrings and duplicate skb for each */ |
| 1043 | for (i++; i < WIL6210_MAX_TX_RINGS; i++) { |
| 1044 | v2 = &wil->vring_tx[i]; |
| 1045 | if (!v2->va) |
| 1046 | continue; |
| 1047 | cid = wil->vring2cid_tid[i][0]; |
| 1048 | if (cid >= WIL6210_MAX_CID) /* skip BCAST */ |
| 1049 | continue; |
Vladimir Kondratiev | 230d844 | 2015-04-30 16:25:10 +0300 | [diff] [blame] | 1050 | if (!wil->vring_tx_data[i].dot1x_open && |
| 1051 | (skb->protocol != cpu_to_be16(ETH_P_PAE))) |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 1052 | continue; |
| 1053 | |
| 1054 | if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) |
| 1055 | continue; |
| 1056 | |
| 1057 | skb2 = skb_copy(skb, GFP_ATOMIC); |
| 1058 | if (skb2) { |
| 1059 | wil_dbg_txrx(wil, "BCAST DUP -> ring %d\n", i); |
| 1060 | wil_set_da_for_vring(wil, skb2, i); |
| 1061 | wil_tx_vring(wil, v2, skb2); |
| 1062 | } else { |
| 1063 | wil_err(wil, "skb_copy failed\n"); |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | return v; |
| 1068 | } |
| 1069 | |
| 1070 | static struct vring *wil_find_tx_bcast(struct wil6210_priv *wil, |
| 1071 | struct sk_buff *skb) |
| 1072 | { |
| 1073 | struct wireless_dev *wdev = wil->wdev; |
| 1074 | |
| 1075 | if (wdev->iftype != NL80211_IFTYPE_AP) |
| 1076 | return wil_find_tx_bcast_2(wil, skb); |
| 1077 | |
Vladimir Kondratiev | 7081242 | 2015-03-15 16:00:24 +0200 | [diff] [blame] | 1078 | return wil_find_tx_bcast_1(wil, skb); |
| 1079 | } |
| 1080 | |
Kirshenbaum Erez | 99b55bd | 2013-06-23 12:59:34 +0300 | [diff] [blame] | 1081 | static int wil_tx_desc_map(struct vring_tx_desc *d, dma_addr_t pa, u32 len, |
| 1082 | int vring_index) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1083 | { |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1084 | wil_desc_addr_set(&d->dma.addr, pa); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1085 | d->dma.ip_length = 0; |
| 1086 | /* 0..6: mac_length; 7:ip_version 0-IP6 1-IP4*/ |
| 1087 | d->dma.b11 = 0/*14 | BIT(7)*/; |
| 1088 | d->dma.error = 0; |
| 1089 | d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 1090 | d->dma.length = cpu_to_le16((u16)len); |
Kirshenbaum Erez | 99b55bd | 2013-06-23 12:59:34 +0300 | [diff] [blame] | 1091 | d->dma.d0 = (vring_index << DMA_CFG_DESC_TX_0_QID_POS); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1092 | d->mac.d[0] = 0; |
| 1093 | d->mac.d[1] = 0; |
| 1094 | d->mac.d[2] = 0; |
| 1095 | d->mac.ucode_cmd = 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1096 | /* translation type: 0 - bypass; 1 - 802.3; 2 - native wifi */ |
| 1097 | d->mac.d[2] = BIT(MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_POS) | |
| 1098 | (1 << MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_POS); |
| 1099 | |
| 1100 | return 0; |
| 1101 | } |
| 1102 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1103 | static inline |
| 1104 | void wil_tx_desc_set_nr_frags(struct vring_tx_desc *d, int nr_frags) |
| 1105 | { |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1106 | d->mac.d[2] |= (nr_frags << MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_POS); |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1107 | } |
| 1108 | |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1109 | /** |
| 1110 | * Sets the descriptor @d up for csum and/or TSO offloading. The corresponding |
| 1111 | * @skb is used to obtain the protocol and headers length. |
| 1112 | * @tso_desc_type is a descriptor type for TSO: 0 - a header, 1 - first data, |
| 1113 | * 2 - middle, 3 - last descriptor. |
| 1114 | */ |
| 1115 | |
| 1116 | static void wil_tx_desc_offload_setup_tso(struct vring_tx_desc *d, |
| 1117 | struct sk_buff *skb, |
| 1118 | int tso_desc_type, bool is_ipv4, |
| 1119 | int tcp_hdr_len, int skb_net_hdr_len) |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1120 | { |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1121 | d->dma.b11 = ETH_HLEN; /* MAC header length */ |
| 1122 | d->dma.b11 |= is_ipv4 << DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS; |
| 1123 | |
| 1124 | d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); |
| 1125 | /* L4 header len: TCP header length */ |
| 1126 | d->dma.d0 |= (tcp_hdr_len & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); |
| 1127 | |
| 1128 | /* Setup TSO: bit and desc type */ |
| 1129 | d->dma.d0 |= (BIT(DMA_CFG_DESC_TX_0_TCP_SEG_EN_POS)) | |
| 1130 | (tso_desc_type << DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS); |
| 1131 | d->dma.d0 |= (is_ipv4 << DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_POS); |
| 1132 | |
| 1133 | d->dma.ip_length = skb_net_hdr_len; |
| 1134 | /* Enable TCP/UDP checksum */ |
| 1135 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); |
| 1136 | /* Calculate pseudo-header */ |
| 1137 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); |
| 1138 | } |
| 1139 | |
| 1140 | /** |
| 1141 | * Sets the descriptor @d up for csum. The corresponding |
| 1142 | * @skb is used to obtain the protocol and headers length. |
| 1143 | * Returns the protocol: 0 - not TCP, 1 - TCPv4, 2 - TCPv6. |
| 1144 | * Note, if d==NULL, the function only returns the protocol result. |
| 1145 | * |
| 1146 | * It is very similar to previous wil_tx_desc_offload_setup_tso. This |
| 1147 | * is "if unrolling" to optimize the critical path. |
| 1148 | */ |
| 1149 | |
| 1150 | static int wil_tx_desc_offload_setup(struct vring_tx_desc *d, |
| 1151 | struct sk_buff *skb){ |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1152 | int protocol; |
| 1153 | |
| 1154 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
| 1155 | return 0; |
| 1156 | |
Vladimir Kondratiev | df2d08e | 2014-01-08 11:50:48 +0200 | [diff] [blame] | 1157 | d->dma.b11 = ETH_HLEN; /* MAC header length */ |
| 1158 | |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1159 | switch (skb->protocol) { |
| 1160 | case cpu_to_be16(ETH_P_IP): |
| 1161 | protocol = ip_hdr(skb)->protocol; |
Vladimir Kondratiev | df2d08e | 2014-01-08 11:50:48 +0200 | [diff] [blame] | 1162 | 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] | 1163 | break; |
| 1164 | case cpu_to_be16(ETH_P_IPV6): |
| 1165 | protocol = ipv6_hdr(skb)->nexthdr; |
| 1166 | break; |
| 1167 | default: |
| 1168 | return -EINVAL; |
| 1169 | } |
| 1170 | |
| 1171 | switch (protocol) { |
| 1172 | case IPPROTO_TCP: |
| 1173 | d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); |
| 1174 | /* L4 header len: TCP header length */ |
| 1175 | d->dma.d0 |= |
| 1176 | (tcp_hdrlen(skb) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); |
| 1177 | break; |
| 1178 | case IPPROTO_UDP: |
| 1179 | /* L4 header len: UDP header length */ |
| 1180 | d->dma.d0 |= |
| 1181 | (sizeof(struct udphdr) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); |
| 1182 | break; |
| 1183 | default: |
| 1184 | return -EINVAL; |
| 1185 | } |
| 1186 | |
| 1187 | d->dma.ip_length = skb_network_header_len(skb); |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1188 | /* Enable TCP/UDP checksum */ |
| 1189 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); |
| 1190 | /* Calculate pseudo-header */ |
| 1191 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); |
| 1192 | |
| 1193 | return 0; |
| 1194 | } |
| 1195 | |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1196 | static inline void wil_tx_last_desc(struct vring_tx_desc *d) |
| 1197 | { |
| 1198 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS) | |
| 1199 | BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS) | |
| 1200 | BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS); |
| 1201 | } |
| 1202 | |
| 1203 | static inline void wil_set_tx_desc_last_tso(volatile struct vring_tx_desc *d) |
| 1204 | { |
| 1205 | d->dma.d0 |= wil_tso_type_lst << |
| 1206 | DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS; |
| 1207 | } |
| 1208 | |
| 1209 | static int __wil_tx_vring_tso(struct wil6210_priv *wil, struct vring *vring, |
| 1210 | struct sk_buff *skb) |
| 1211 | { |
| 1212 | struct device *dev = wil_to_dev(wil); |
| 1213 | |
| 1214 | /* point to descriptors in shared memory */ |
| 1215 | volatile struct vring_tx_desc *_desc = NULL, *_hdr_desc, |
| 1216 | *_first_desc = NULL; |
| 1217 | |
| 1218 | /* pointers to shadow descriptors */ |
| 1219 | struct vring_tx_desc desc_mem, hdr_desc_mem, first_desc_mem, |
| 1220 | *d = &hdr_desc_mem, *hdr_desc = &hdr_desc_mem, |
| 1221 | *first_desc = &first_desc_mem; |
| 1222 | |
| 1223 | /* pointer to shadow descriptors' context */ |
| 1224 | struct wil_ctx *hdr_ctx, *first_ctx = NULL; |
| 1225 | |
| 1226 | int descs_used = 0; /* total number of used descriptors */ |
| 1227 | int sg_desc_cnt = 0; /* number of descriptors for current mss*/ |
| 1228 | |
| 1229 | u32 swhead = vring->swhead; |
| 1230 | int used, avail = wil_vring_avail_tx(vring); |
| 1231 | int nr_frags = skb_shinfo(skb)->nr_frags; |
| 1232 | int min_desc_required = nr_frags + 1; |
| 1233 | int mss = skb_shinfo(skb)->gso_size; /* payload size w/o headers */ |
| 1234 | int f, len, hdrlen, headlen; |
| 1235 | int vring_index = vring - wil->vring_tx; |
| 1236 | struct vring_tx_data *txdata = &wil->vring_tx_data[vring_index]; |
| 1237 | uint i = swhead; |
| 1238 | dma_addr_t pa; |
| 1239 | const skb_frag_t *frag = NULL; |
| 1240 | int rem_data = mss; |
| 1241 | int lenmss; |
| 1242 | int hdr_compensation_need = true; |
| 1243 | int desc_tso_type = wil_tso_type_first; |
| 1244 | bool is_ipv4; |
| 1245 | int tcp_hdr_len; |
| 1246 | int skb_net_hdr_len; |
| 1247 | int gso_type; |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1248 | int rc = -EINVAL; |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1249 | |
| 1250 | wil_dbg_txrx(wil, "%s() %d bytes to vring %d\n", |
| 1251 | __func__, skb->len, vring_index); |
| 1252 | |
| 1253 | if (unlikely(!txdata->enabled)) |
| 1254 | return -EINVAL; |
| 1255 | |
| 1256 | /* A typical page 4K is 3-4 payloads, we assume each fragment |
| 1257 | * is a full payload, that's how min_desc_required has been |
| 1258 | * calculated. In real we might need more or less descriptors, |
| 1259 | * this is the initial check only. |
| 1260 | */ |
| 1261 | if (unlikely(avail < min_desc_required)) { |
| 1262 | wil_err_ratelimited(wil, |
| 1263 | "TSO: Tx ring[%2d] full. No space for %d fragments\n", |
| 1264 | vring_index, min_desc_required); |
| 1265 | return -ENOMEM; |
| 1266 | } |
| 1267 | |
| 1268 | /* Header Length = MAC header len + IP header len + TCP header len*/ |
| 1269 | hdrlen = ETH_HLEN + |
| 1270 | (int)skb_network_header_len(skb) + |
| 1271 | tcp_hdrlen(skb); |
| 1272 | |
| 1273 | gso_type = skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV6 | SKB_GSO_TCPV4); |
| 1274 | switch (gso_type) { |
| 1275 | case SKB_GSO_TCPV4: |
| 1276 | /* TCP v4, zero out the IP length and IPv4 checksum fields |
| 1277 | * as required by the offloading doc |
| 1278 | */ |
| 1279 | ip_hdr(skb)->tot_len = 0; |
| 1280 | ip_hdr(skb)->check = 0; |
| 1281 | is_ipv4 = true; |
| 1282 | break; |
| 1283 | case SKB_GSO_TCPV6: |
| 1284 | /* TCP v6, zero out the payload length */ |
| 1285 | ipv6_hdr(skb)->payload_len = 0; |
| 1286 | is_ipv4 = false; |
| 1287 | break; |
| 1288 | default: |
| 1289 | /* other than TCPv4 or TCPv6 types are not supported for TSO. |
| 1290 | * It is also illegal for both to be set simultaneously |
| 1291 | */ |
| 1292 | return -EINVAL; |
| 1293 | } |
| 1294 | |
| 1295 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
| 1296 | return -EINVAL; |
| 1297 | |
| 1298 | /* tcp header length and skb network header length are fixed for all |
| 1299 | * packet's descriptors - read then once here |
| 1300 | */ |
| 1301 | tcp_hdr_len = tcp_hdrlen(skb); |
| 1302 | skb_net_hdr_len = skb_network_header_len(skb); |
| 1303 | |
| 1304 | _hdr_desc = &vring->va[i].tx; |
| 1305 | |
| 1306 | pa = dma_map_single(dev, skb->data, hdrlen, DMA_TO_DEVICE); |
| 1307 | if (unlikely(dma_mapping_error(dev, pa))) { |
| 1308 | wil_err(wil, "TSO: Skb head DMA map error\n"); |
| 1309 | goto err_exit; |
| 1310 | } |
| 1311 | |
| 1312 | wil_tx_desc_map(hdr_desc, pa, hdrlen, vring_index); |
| 1313 | wil_tx_desc_offload_setup_tso(hdr_desc, skb, wil_tso_type_hdr, is_ipv4, |
| 1314 | tcp_hdr_len, skb_net_hdr_len); |
| 1315 | wil_tx_last_desc(hdr_desc); |
| 1316 | |
| 1317 | vring->ctx[i].mapped_as = wil_mapped_as_single; |
| 1318 | hdr_ctx = &vring->ctx[i]; |
| 1319 | |
| 1320 | descs_used++; |
| 1321 | headlen = skb_headlen(skb) - hdrlen; |
| 1322 | |
| 1323 | for (f = headlen ? -1 : 0; f < nr_frags; f++) { |
| 1324 | if (headlen) { |
| 1325 | len = headlen; |
| 1326 | wil_dbg_txrx(wil, "TSO: process skb head, len %u\n", |
| 1327 | len); |
| 1328 | } else { |
| 1329 | frag = &skb_shinfo(skb)->frags[f]; |
| 1330 | len = frag->size; |
| 1331 | wil_dbg_txrx(wil, "TSO: frag[%d]: len %u\n", f, len); |
| 1332 | } |
| 1333 | |
| 1334 | while (len) { |
| 1335 | wil_dbg_txrx(wil, |
| 1336 | "TSO: len %d, rem_data %d, descs_used %d\n", |
| 1337 | len, rem_data, descs_used); |
| 1338 | |
| 1339 | if (descs_used == avail) { |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1340 | wil_err_ratelimited(wil, "TSO: ring overflow\n"); |
| 1341 | rc = -ENOMEM; |
| 1342 | goto mem_error; |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1343 | } |
| 1344 | |
| 1345 | lenmss = min_t(int, rem_data, len); |
| 1346 | i = (swhead + descs_used) % vring->size; |
| 1347 | wil_dbg_txrx(wil, "TSO: lenmss %d, i %d\n", lenmss, i); |
| 1348 | |
| 1349 | if (!headlen) { |
| 1350 | pa = skb_frag_dma_map(dev, frag, |
| 1351 | frag->size - len, lenmss, |
| 1352 | DMA_TO_DEVICE); |
| 1353 | vring->ctx[i].mapped_as = wil_mapped_as_page; |
| 1354 | } else { |
| 1355 | pa = dma_map_single(dev, |
| 1356 | skb->data + |
| 1357 | skb_headlen(skb) - headlen, |
| 1358 | lenmss, |
| 1359 | DMA_TO_DEVICE); |
| 1360 | vring->ctx[i].mapped_as = wil_mapped_as_single; |
| 1361 | headlen -= lenmss; |
| 1362 | } |
| 1363 | |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1364 | if (unlikely(dma_mapping_error(dev, pa))) { |
| 1365 | wil_err(wil, "TSO: DMA map page error\n"); |
| 1366 | goto mem_error; |
| 1367 | } |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1368 | |
| 1369 | _desc = &vring->va[i].tx; |
| 1370 | |
| 1371 | if (!_first_desc) { |
| 1372 | _first_desc = _desc; |
| 1373 | first_ctx = &vring->ctx[i]; |
| 1374 | d = first_desc; |
| 1375 | } else { |
| 1376 | d = &desc_mem; |
| 1377 | } |
| 1378 | |
| 1379 | wil_tx_desc_map(d, pa, lenmss, vring_index); |
| 1380 | wil_tx_desc_offload_setup_tso(d, skb, desc_tso_type, |
| 1381 | is_ipv4, tcp_hdr_len, |
| 1382 | skb_net_hdr_len); |
| 1383 | |
| 1384 | /* use tso_type_first only once */ |
| 1385 | desc_tso_type = wil_tso_type_mid; |
| 1386 | |
| 1387 | descs_used++; /* desc used so far */ |
| 1388 | sg_desc_cnt++; /* desc used for this segment */ |
| 1389 | len -= lenmss; |
| 1390 | rem_data -= lenmss; |
| 1391 | |
| 1392 | wil_dbg_txrx(wil, |
| 1393 | "TSO: len %d, rem_data %d, descs_used %d, sg_desc_cnt %d,\n", |
| 1394 | len, rem_data, descs_used, sg_desc_cnt); |
| 1395 | |
| 1396 | /* Close the segment if reached mss size or last frag*/ |
| 1397 | if (rem_data == 0 || (f == nr_frags - 1 && len == 0)) { |
| 1398 | if (hdr_compensation_need) { |
| 1399 | /* first segment include hdr desc for |
| 1400 | * release |
| 1401 | */ |
| 1402 | hdr_ctx->nr_frags = sg_desc_cnt; |
| 1403 | wil_tx_desc_set_nr_frags(first_desc, |
| 1404 | sg_desc_cnt + |
| 1405 | 1); |
| 1406 | hdr_compensation_need = false; |
| 1407 | } else { |
| 1408 | wil_tx_desc_set_nr_frags(first_desc, |
| 1409 | sg_desc_cnt); |
| 1410 | } |
| 1411 | first_ctx->nr_frags = sg_desc_cnt - 1; |
| 1412 | |
| 1413 | wil_tx_last_desc(d); |
| 1414 | |
| 1415 | /* first descriptor may also be the last |
| 1416 | * for this mss - make sure not to copy |
| 1417 | * it twice |
| 1418 | */ |
| 1419 | if (first_desc != d) |
| 1420 | *_first_desc = *first_desc; |
| 1421 | |
| 1422 | /*last descriptor will be copied at the end |
| 1423 | * of this TS processing |
| 1424 | */ |
| 1425 | if (f < nr_frags - 1 || len > 0) |
| 1426 | *_desc = *d; |
| 1427 | |
| 1428 | rem_data = mss; |
| 1429 | _first_desc = NULL; |
| 1430 | sg_desc_cnt = 0; |
| 1431 | } else if (first_desc != d) /* update mid descriptor */ |
| 1432 | *_desc = *d; |
| 1433 | } |
| 1434 | } |
| 1435 | |
| 1436 | /* first descriptor may also be the last. |
| 1437 | * in this case d pointer is invalid |
| 1438 | */ |
| 1439 | if (_first_desc == _desc) |
| 1440 | d = first_desc; |
| 1441 | |
| 1442 | /* Last data descriptor */ |
| 1443 | wil_set_tx_desc_last_tso(d); |
| 1444 | *_desc = *d; |
| 1445 | |
| 1446 | /* Fill the total number of descriptors in first desc (hdr)*/ |
| 1447 | wil_tx_desc_set_nr_frags(hdr_desc, descs_used); |
| 1448 | *_hdr_desc = *hdr_desc; |
| 1449 | |
| 1450 | /* hold reference to skb |
| 1451 | * to prevent skb release before accounting |
| 1452 | * in case of immediate "tx done" |
| 1453 | */ |
| 1454 | vring->ctx[i].skb = skb_get(skb); |
| 1455 | |
| 1456 | /* performance monitoring */ |
| 1457 | used = wil_vring_used_tx(vring); |
| 1458 | if (wil_val_in_range(vring_idle_trsh, |
| 1459 | used, used + descs_used)) { |
| 1460 | txdata->idle += get_cycles() - txdata->last_idle; |
| 1461 | wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", |
| 1462 | vring_index, used, used + descs_used); |
| 1463 | } |
| 1464 | |
| 1465 | /* advance swhead */ |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1466 | wil_vring_advance_head(vring, descs_used); |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1467 | wil_dbg_txrx(wil, "TSO: Tx swhead %d -> %d\n", swhead, vring->swhead); |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1468 | |
| 1469 | /* make sure all writes to descriptors (shared memory) are done before |
| 1470 | * committing them to HW |
| 1471 | */ |
| 1472 | wmb(); |
| 1473 | |
Vladimir Kondratiev | b9eeb51 | 2015-07-30 13:52:03 +0300 | [diff] [blame] | 1474 | wil_w(wil, vring->hwtail, vring->swhead); |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1475 | return 0; |
| 1476 | |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1477 | mem_error: |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1478 | while (descs_used > 0) { |
| 1479 | struct wil_ctx *ctx; |
| 1480 | |
| 1481 | i = (swhead + descs_used) % vring->size; |
| 1482 | d = (struct vring_tx_desc *)&vring->va[i].tx; |
| 1483 | _desc = &vring->va[i].tx; |
| 1484 | *d = *_desc; |
| 1485 | _desc->dma.status = TX_DMA_STATUS_DU; |
| 1486 | ctx = &vring->ctx[i]; |
| 1487 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1488 | memset(ctx, 0, sizeof(*ctx)); |
| 1489 | descs_used--; |
| 1490 | } |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1491 | err_exit: |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1492 | return rc; |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1493 | } |
| 1494 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1495 | static int __wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, |
| 1496 | struct sk_buff *skb) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1497 | { |
| 1498 | struct device *dev = wil_to_dev(wil); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1499 | struct vring_tx_desc dd, *d = ⅆ |
| 1500 | volatile struct vring_tx_desc *_d; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1501 | u32 swhead = vring->swhead; |
| 1502 | int avail = wil_vring_avail_tx(vring); |
| 1503 | int nr_frags = skb_shinfo(skb)->nr_frags; |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1504 | uint f = 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1505 | int vring_index = vring - wil->vring_tx; |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1506 | struct vring_tx_data *txdata = &wil->vring_tx_data[vring_index]; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1507 | uint i = swhead; |
| 1508 | dma_addr_t pa; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1509 | int used; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1510 | bool mcast = (vring_index == wil->bcast_vring); |
| 1511 | uint len = skb_headlen(skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1512 | |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1513 | wil_dbg_txrx(wil, "%s() %d bytes to vring %d\n", |
| 1514 | __func__, skb->len, vring_index); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1515 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1516 | if (unlikely(!txdata->enabled)) |
| 1517 | return -EINVAL; |
| 1518 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1519 | if (unlikely(avail < 1 + nr_frags)) { |
Vladimir Kondratiev | 70801e1 | 2014-12-01 15:36:03 +0200 | [diff] [blame] | 1520 | wil_err_ratelimited(wil, |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1521 | "Tx ring[%2d] full. No space for %d fragments\n", |
| 1522 | vring_index, 1 + nr_frags); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1523 | return -ENOMEM; |
| 1524 | } |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1525 | _d = &vring->va[i].tx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1526 | |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1527 | 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] | 1528 | |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1529 | wil_dbg_txrx(wil, "Tx[%2d] skb %d bytes 0x%p -> %pad\n", vring_index, |
| 1530 | skb_headlen(skb), skb->data, &pa); |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1531 | wil_hex_dump_txrx("Tx ", DUMP_PREFIX_OFFSET, 16, 1, |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1532 | skb->data, skb_headlen(skb), false); |
| 1533 | |
| 1534 | if (unlikely(dma_mapping_error(dev, pa))) |
| 1535 | return -EINVAL; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1536 | vring->ctx[i].mapped_as = wil_mapped_as_single; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1537 | /* 1-st segment */ |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1538 | wil_tx_desc_map(d, pa, len, vring_index); |
| 1539 | if (unlikely(mcast)) { |
| 1540 | 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] | 1541 | if (unlikely(len > WIL_BCAST_MCS0_LIMIT)) /* set MCS 1 */ |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1542 | 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] | 1543 | } |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1544 | /* Process TCP/UDP checksum offloading */ |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1545 | if (unlikely(wil_tx_desc_offload_setup(d, skb))) { |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1546 | wil_err(wil, "Tx[%2d] Failed to set cksum, drop packet\n", |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1547 | vring_index); |
| 1548 | goto dma_error; |
| 1549 | } |
| 1550 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1551 | vring->ctx[i].nr_frags = nr_frags; |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1552 | wil_tx_desc_set_nr_frags(d, nr_frags + 1); |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1553 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1554 | /* middle segments */ |
Kirshenbaum Erez | 504937d | 2013-07-21 11:34:37 +0300 | [diff] [blame] | 1555 | for (; f < nr_frags; f++) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1556 | const struct skb_frag_struct *frag = |
| 1557 | &skb_shinfo(skb)->frags[f]; |
| 1558 | int len = skb_frag_size(frag); |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1559 | |
Vladimir Kondratiev | e59d16c | 2015-02-01 10:55:12 +0200 | [diff] [blame] | 1560 | *_d = *d; |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1561 | wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", vring_index, i); |
| 1562 | wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, |
| 1563 | (const void *)d, sizeof(*d), false); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1564 | i = (swhead + f + 1) % vring->size; |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1565 | _d = &vring->va[i].tx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1566 | pa = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1567 | DMA_TO_DEVICE); |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1568 | if (unlikely(dma_mapping_error(dev, pa))) { |
| 1569 | wil_err(wil, "Tx[%2d] failed to map fragment\n", |
| 1570 | vring_index); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1571 | goto dma_error; |
Hamad Kadmany | e3d2ed9 | 2015-10-25 15:59:22 +0200 | [diff] [blame] | 1572 | } |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1573 | vring->ctx[i].mapped_as = wil_mapped_as_page; |
Kirshenbaum Erez | 99b55bd | 2013-06-23 12:59:34 +0300 | [diff] [blame] | 1574 | wil_tx_desc_map(d, pa, len, vring_index); |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1575 | /* no need to check return code - |
| 1576 | * if it succeeded for 1-st descriptor, |
| 1577 | * it will succeed here too |
| 1578 | */ |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1579 | wil_tx_desc_offload_setup(d, skb); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1580 | } |
| 1581 | /* for the last seg only */ |
| 1582 | d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS); |
Kirshenbaum Erez | 668b2bb | 2013-06-23 12:59:35 +0300 | [diff] [blame] | 1583 | 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] | 1584 | 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] | 1585 | *_d = *d; |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1586 | wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", vring_index, i); |
| 1587 | wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, |
| 1588 | (const void *)d, sizeof(*d), false); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1589 | |
Vladimir Kondratiev | 6cdadd4 | 2013-07-11 18:03:41 +0300 | [diff] [blame] | 1590 | /* hold reference to skb |
| 1591 | * to prevent skb release before accounting |
| 1592 | * in case of immediate "tx done" |
| 1593 | */ |
| 1594 | vring->ctx[i].skb = skb_get(skb); |
| 1595 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1596 | /* performance monitoring */ |
| 1597 | used = wil_vring_used_tx(vring); |
| 1598 | if (wil_val_in_range(vring_idle_trsh, |
| 1599 | used, used + nr_frags + 1)) { |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1600 | txdata->idle += get_cycles() - txdata->last_idle; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1601 | wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", |
| 1602 | vring_index, used, used + nr_frags + 1); |
| 1603 | } |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1604 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1605 | /* advance swhead */ |
| 1606 | wil_vring_advance_head(vring, nr_frags + 1); |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1607 | wil_dbg_txrx(wil, "Tx[%2d] swhead %d -> %d\n", vring_index, swhead, |
| 1608 | vring->swhead); |
Vladimir Kondratiev | 9865809 | 2013-05-12 14:43:35 +0300 | [diff] [blame] | 1609 | trace_wil6210_tx(vring_index, swhead, skb->len, nr_frags); |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1610 | |
| 1611 | /* make sure all writes to descriptors (shared memory) are done before |
| 1612 | * committing them to HW |
| 1613 | */ |
| 1614 | wmb(); |
| 1615 | |
Vladimir Kondratiev | b9eeb51 | 2015-07-30 13:52:03 +0300 | [diff] [blame] | 1616 | wil_w(wil, vring->hwtail, vring->swhead); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1617 | |
| 1618 | return 0; |
| 1619 | dma_error: |
| 1620 | /* unmap what we have mapped */ |
Vladimir Kondratiev | c2a146f | 2013-07-21 11:34:36 +0300 | [diff] [blame] | 1621 | nr_frags = f + 1; /* frags mapped + one for skb head */ |
| 1622 | for (f = 0; f < nr_frags; f++) { |
Vladimir Kondratiev | c2a146f | 2013-07-21 11:34:36 +0300 | [diff] [blame] | 1623 | struct wil_ctx *ctx; |
Vladimir Kondratiev | 7e594444 | 2013-05-12 14:43:32 +0300 | [diff] [blame] | 1624 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1625 | i = (swhead + f) % vring->size; |
Vladimir Kondratiev | c2a146f | 2013-07-21 11:34:36 +0300 | [diff] [blame] | 1626 | ctx = &vring->ctx[i]; |
Vladimir Kondratiev | 8fe5962 | 2014-09-10 16:34:34 +0300 | [diff] [blame] | 1627 | _d = &vring->va[i].tx; |
Vladimir Kondratiev | 68ada71 | 2013-05-12 14:43:37 +0300 | [diff] [blame] | 1628 | *d = *_d; |
| 1629 | _d->dma.status = TX_DMA_STATUS_DU; |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1630 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1631 | |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1632 | memset(ctx, 0, sizeof(*ctx)); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1633 | } |
| 1634 | |
| 1635 | return -EINVAL; |
| 1636 | } |
| 1637 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1638 | static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, |
| 1639 | struct sk_buff *skb) |
| 1640 | { |
| 1641 | int vring_index = vring - wil->vring_tx; |
| 1642 | struct vring_tx_data *txdata = &wil->vring_tx_data[vring_index]; |
| 1643 | int rc; |
| 1644 | |
| 1645 | spin_lock(&txdata->lock); |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1646 | |
| 1647 | rc = (skb_is_gso(skb) ? __wil_tx_vring_tso : __wil_tx_vring) |
| 1648 | (wil, vring, skb); |
| 1649 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1650 | spin_unlock(&txdata->lock); |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1651 | |
Vladimir Kondratiev | 5933a06 | 2015-02-01 10:55:13 +0200 | [diff] [blame] | 1652 | return rc; |
| 1653 | } |
| 1654 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1655 | netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
| 1656 | { |
| 1657 | struct wil6210_priv *wil = ndev_to_wil(ndev); |
Vladimir Kondratiev | 3df2cd36 | 2014-02-27 16:20:43 +0200 | [diff] [blame] | 1658 | struct ethhdr *eth = (void *)skb->data; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1659 | bool bcast = is_multicast_ether_addr(eth->h_dest); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1660 | struct vring *vring; |
Vladimir Kondratiev | aa27dea | 2014-03-17 15:34:11 +0200 | [diff] [blame] | 1661 | static bool pr_once_fw; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1662 | int rc; |
| 1663 | |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1664 | wil_dbg_txrx(wil, "%s()\n", __func__); |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1665 | if (unlikely(!test_bit(wil_status_fwready, wil->status))) { |
Vladimir Kondratiev | aa27dea | 2014-03-17 15:34:11 +0200 | [diff] [blame] | 1666 | if (!pr_once_fw) { |
| 1667 | wil_err(wil, "FW not ready\n"); |
| 1668 | pr_once_fw = true; |
| 1669 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1670 | goto drop; |
| 1671 | } |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1672 | if (unlikely(!test_bit(wil_status_fwconnected, wil->status))) { |
Vladimir Kondratiev | a3dcbae | 2015-10-04 10:23:25 +0300 | [diff] [blame] | 1673 | wil_err_ratelimited(wil, "FW not connected\n"); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1674 | goto drop; |
| 1675 | } |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1676 | if (unlikely(wil->wdev->iftype == NL80211_IFTYPE_MONITOR)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1677 | wil_err(wil, "Xmit in monitor mode not supported\n"); |
| 1678 | goto drop; |
| 1679 | } |
Vladimir Kondratiev | aa27dea | 2014-03-17 15:34:11 +0200 | [diff] [blame] | 1680 | pr_once_fw = false; |
Vladimir Kondratiev | d58db4e | 2013-06-09 09:12:54 +0300 | [diff] [blame] | 1681 | |
| 1682 | /* find vring */ |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 1683 | if (wil->wdev->iftype == NL80211_IFTYPE_STATION) { |
| 1684 | /* in STA mode (ESS), all to same VRING */ |
| 1685 | vring = wil_find_tx_vring_sta(wil, skb); |
| 1686 | } else { /* direct communication, find matching VRING */ |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1687 | vring = bcast ? wil_find_tx_bcast(wil, skb) : |
| 1688 | wil_find_tx_ucast(wil, skb); |
Vladimir Kondratiev | 54ed90a | 2014-12-23 09:47:15 +0200 | [diff] [blame] | 1689 | } |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1690 | if (unlikely(!vring)) { |
Vladimir Kondratiev | 5aed139 | 2014-06-16 19:37:15 +0300 | [diff] [blame] | 1691 | 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] | 1692 | goto drop; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1693 | } |
Vladimir Kondratiev | d58db4e | 2013-06-09 09:12:54 +0300 | [diff] [blame] | 1694 | /* set up vring entry */ |
| 1695 | rc = wil_tx_vring(wil, vring, skb); |
| 1696 | |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1697 | /* do we still have enough room in the vring? */ |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1698 | if (unlikely(wil_vring_avail_tx(vring) < wil_vring_wmark_low(vring))) { |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1699 | netif_tx_stop_all_queues(wil_to_ndev(wil)); |
Vladimir Kondratiev | 55f8f68 | 2014-06-16 19:37:23 +0300 | [diff] [blame] | 1700 | wil_dbg_txrx(wil, "netif_tx_stop : ring full\n"); |
| 1701 | } |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1702 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1703 | switch (rc) { |
| 1704 | case 0: |
Vladimir Kondratiev | 795ce73 | 2013-01-28 18:31:00 +0200 | [diff] [blame] | 1705 | /* statistics will be updated on the tx_complete */ |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1706 | dev_kfree_skb_any(skb); |
| 1707 | return NETDEV_TX_OK; |
| 1708 | case -ENOMEM: |
| 1709 | return NETDEV_TX_BUSY; |
| 1710 | default: |
Vladimir Kondratiev | afda8bb | 2013-01-28 18:31:07 +0200 | [diff] [blame] | 1711 | break; /* goto drop; */ |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1712 | } |
| 1713 | drop: |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1714 | ndev->stats.tx_dropped++; |
| 1715 | dev_kfree_skb_any(skb); |
| 1716 | |
| 1717 | return NET_XMIT_DROP; |
| 1718 | } |
| 1719 | |
Vladimir Kondratiev | 713c8a2 | 2015-01-25 10:52:49 +0200 | [diff] [blame] | 1720 | static inline bool wil_need_txstat(struct sk_buff *skb) |
| 1721 | { |
| 1722 | struct ethhdr *eth = (void *)skb->data; |
| 1723 | |
| 1724 | return is_unicast_ether_addr(eth->h_dest) && skb->sk && |
| 1725 | (skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS); |
| 1726 | } |
| 1727 | |
| 1728 | static inline void wil_consume_skb(struct sk_buff *skb, bool acked) |
| 1729 | { |
| 1730 | if (unlikely(wil_need_txstat(skb))) |
| 1731 | skb_complete_wifi_ack(skb, acked); |
| 1732 | else |
| 1733 | acked ? dev_consume_skb_any(skb) : dev_kfree_skb_any(skb); |
| 1734 | } |
| 1735 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1736 | /** |
| 1737 | * Clean up transmitted skb's from the Tx VRING |
| 1738 | * |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1739 | * Return number of descriptors cleared |
| 1740 | * |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1741 | * Safe to call from IRQ |
| 1742 | */ |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1743 | int wil_tx_complete(struct wil6210_priv *wil, int ringid) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1744 | { |
Vladimir Kondratiev | 795ce73 | 2013-01-28 18:31:00 +0200 | [diff] [blame] | 1745 | struct net_device *ndev = wil_to_ndev(wil); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1746 | struct device *dev = wil_to_dev(wil); |
| 1747 | struct vring *vring = &wil->vring_tx[ringid]; |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 1748 | struct vring_tx_data *txdata = &wil->vring_tx_data[ringid]; |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1749 | int done = 0; |
Vladimir Kondratiev | c8b78b5 | 2014-02-27 16:20:49 +0200 | [diff] [blame] | 1750 | int cid = wil->vring2cid_tid[ringid][0]; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1751 | struct wil_net_stats *stats = NULL; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1752 | volatile struct vring_tx_desc *_d; |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1753 | int used_before_complete; |
| 1754 | int used_new; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1755 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1756 | if (unlikely(!vring->va)) { |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1757 | wil_err(wil, "Tx irq[%d]: vring not initialized\n", ringid); |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1758 | return 0; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1759 | } |
| 1760 | |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1761 | if (unlikely(!txdata->enabled)) { |
Vladimir Kondratiev | 097638a | 2014-03-17 15:34:25 +0200 | [diff] [blame] | 1762 | wil_info(wil, "Tx irq[%d]: vring disabled\n", ringid); |
| 1763 | return 0; |
| 1764 | } |
| 1765 | |
Vladimir Kondratiev | 7743882 | 2013-01-28 18:31:06 +0200 | [diff] [blame] | 1766 | wil_dbg_txrx(wil, "%s(%d)\n", __func__, ringid); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1767 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1768 | used_before_complete = wil_vring_used_tx(vring); |
| 1769 | |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1770 | if (cid < WIL6210_MAX_CID) |
| 1771 | stats = &wil->sta[cid].stats; |
| 1772 | |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1773 | while (!wil_vring_is_empty(vring)) { |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1774 | int new_swtail; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1775 | struct wil_ctx *ctx = &vring->ctx[vring->swtail]; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1776 | /** |
| 1777 | * For the fragmented skb, HW will set DU bit only for the |
Vladimir Kondratiev | 3d4bde1 | 2015-07-30 13:51:56 +0300 | [diff] [blame] | 1778 | * last fragment. look for it. |
| 1779 | * In TSO the first DU will include hdr desc |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1780 | */ |
| 1781 | int lf = (vring->swtail + ctx->nr_frags) % vring->size; |
| 1782 | /* TODO: check we are not past head */ |
Vladimir Kondratiev | 4de41be | 2013-04-18 14:33:52 +0300 | [diff] [blame] | 1783 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1784 | _d = &vring->va[lf].tx; |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1785 | if (unlikely(!(_d->dma.status & TX_DMA_STATUS_DU))) |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1786 | break; |
| 1787 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1788 | new_swtail = (lf + 1) % vring->size; |
| 1789 | while (vring->swtail != new_swtail) { |
| 1790 | struct vring_tx_desc dd, *d = ⅆ |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1791 | u16 dmalen; |
Vladimir Kondratiev | 76dfa4b | 2014-07-14 09:49:39 +0300 | [diff] [blame] | 1792 | struct sk_buff *skb; |
| 1793 | |
| 1794 | ctx = &vring->ctx[vring->swtail]; |
| 1795 | skb = ctx->skb; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1796 | _d = &vring->va[vring->swtail].tx; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1797 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1798 | *d = *_d; |
Vladimir Kondratiev | f88f113 | 2013-07-11 18:03:40 +0300 | [diff] [blame] | 1799 | |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1800 | dmalen = le16_to_cpu(d->dma.length); |
| 1801 | trace_wil6210_tx_done(ringid, vring->swtail, dmalen, |
| 1802 | d->dma.error); |
| 1803 | wil_dbg_txrx(wil, |
Vladimir Kondratiev | 5b29c57 | 2015-02-01 10:55:14 +0200 | [diff] [blame] | 1804 | "TxC[%2d][%3d] : %d bytes, status 0x%02x err 0x%02x\n", |
| 1805 | ringid, vring->swtail, dmalen, |
| 1806 | d->dma.status, d->dma.error); |
| 1807 | wil_hex_dump_txrx("TxCD ", DUMP_PREFIX_NONE, 32, 4, |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1808 | (const void *)d, sizeof(*d), false); |
| 1809 | |
Vladimir Kondratiev | 2232abd | 2014-03-17 15:34:09 +0200 | [diff] [blame] | 1810 | wil_txdesc_unmap(dev, d, ctx); |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1811 | |
| 1812 | if (skb) { |
Vladimir Kondratiev | 33c477f | 2015-02-15 14:02:33 +0200 | [diff] [blame] | 1813 | if (likely(d->dma.error == 0)) { |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1814 | ndev->stats.tx_packets++; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1815 | ndev->stats.tx_bytes += skb->len; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1816 | if (stats) { |
| 1817 | stats->tx_packets++; |
| 1818 | stats->tx_bytes += skb->len; |
| 1819 | } |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1820 | } else { |
| 1821 | ndev->stats.tx_errors++; |
Vladimir Kondratiev | 41d6b09 | 2015-03-15 16:00:23 +0200 | [diff] [blame] | 1822 | if (stats) |
| 1823 | stats->tx_errors++; |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1824 | } |
Vladimir Kondratiev | 713c8a2 | 2015-01-25 10:52:49 +0200 | [diff] [blame] | 1825 | wil_consume_skb(skb, d->dma.error == 0); |
Vladimir Kondratiev | 795ce73 | 2013-01-28 18:31:00 +0200 | [diff] [blame] | 1826 | } |
Vladimir Kondratiev | c236658 | 2014-03-17 15:34:08 +0200 | [diff] [blame] | 1827 | memset(ctx, 0, sizeof(*ctx)); |
| 1828 | /* There is no need to touch HW descriptor: |
| 1829 | * - ststus bit TX_DMA_STATUS_DU is set by design, |
| 1830 | * so hardware will not try to process this desc., |
| 1831 | * - rest of descriptor will be initialized on Tx. |
| 1832 | */ |
| 1833 | vring->swtail = wil_vring_next_tail(vring); |
| 1834 | done++; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1835 | } |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1836 | } |
Vladimir Kondratiev | 67c3e1b | 2014-06-16 19:37:04 +0300 | [diff] [blame] | 1837 | |
Vladimir Shulman | 0436fd9 | 2015-02-15 14:02:34 +0200 | [diff] [blame] | 1838 | /* performance monitoring */ |
| 1839 | used_new = wil_vring_used_tx(vring); |
| 1840 | if (wil_val_in_range(vring_idle_trsh, |
| 1841 | used_new, used_before_complete)) { |
| 1842 | wil_dbg_txrx(wil, "Ring[%2d] idle %d -> %d\n", |
| 1843 | ringid, used_before_complete, used_new); |
Vladimir Kondratiev | 7c0acf8 | 2014-06-16 19:37:05 +0300 | [diff] [blame] | 1844 | txdata->last_idle = get_cycles(); |
| 1845 | } |
Vladimir Kondratiev | 67c3e1b | 2014-06-16 19:37:04 +0300 | [diff] [blame] | 1846 | |
Vladimir Kondratiev | 55f8f68 | 2014-06-16 19:37:23 +0300 | [diff] [blame] | 1847 | if (wil_vring_avail_tx(vring) > wil_vring_wmark_high(vring)) { |
| 1848 | wil_dbg_txrx(wil, "netif_tx_wake : ring not full\n"); |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1849 | netif_tx_wake_all_queues(wil_to_ndev(wil)); |
Vladimir Kondratiev | 55f8f68 | 2014-06-16 19:37:23 +0300 | [diff] [blame] | 1850 | } |
Vladimir Kondratiev | e0287c4 | 2013-05-12 14:43:36 +0300 | [diff] [blame] | 1851 | |
| 1852 | return done; |
Vladimir Kondratiev | 2be7d22 | 2012-12-20 13:13:19 -0800 | [diff] [blame] | 1853 | } |