12be7d22fSVladimir Kondratiev /* 2af3db60aSLazar Alexei * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. 3387f3794SMaya Erez * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved. 42be7d22fSVladimir Kondratiev * 52be7d22fSVladimir Kondratiev * Permission to use, copy, modify, and/or distribute this software for any 62be7d22fSVladimir Kondratiev * purpose with or without fee is hereby granted, provided that the above 72be7d22fSVladimir Kondratiev * copyright notice and this permission notice appear in all copies. 82be7d22fSVladimir Kondratiev * 92be7d22fSVladimir Kondratiev * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 102be7d22fSVladimir Kondratiev * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 112be7d22fSVladimir Kondratiev * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 122be7d22fSVladimir Kondratiev * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 132be7d22fSVladimir Kondratiev * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 142be7d22fSVladimir Kondratiev * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 152be7d22fSVladimir Kondratiev * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 162be7d22fSVladimir Kondratiev */ 172be7d22fSVladimir Kondratiev 182be7d22fSVladimir Kondratiev #include <linux/etherdevice.h> 192be7d22fSVladimir Kondratiev #include <net/ieee80211_radiotap.h> 202be7d22fSVladimir Kondratiev #include <linux/if_arp.h> 212be7d22fSVladimir Kondratiev #include <linux/moduleparam.h> 22504937d4SKirshenbaum Erez #include <linux/ip.h> 23504937d4SKirshenbaum Erez #include <linux/ipv6.h> 24504937d4SKirshenbaum Erez #include <net/ipv6.h> 250786dc4eSVladimir Kondratiev #include <linux/prefetch.h> 262be7d22fSVladimir Kondratiev 272be7d22fSVladimir Kondratiev #include "wil6210.h" 282be7d22fSVladimir Kondratiev #include "wmi.h" 292be7d22fSVladimir Kondratiev #include "txrx.h" 3098658095SVladimir Kondratiev #include "trace.h" 317be13fc3SGidon Studinski #include "txrx_edma.h" 322be7d22fSVladimir Kondratiev 33c406ea7cSVladimir Kondratiev bool rx_align_2; 3478484c44SMaya Erez module_param(rx_align_2, bool, 0444); 35c406ea7cSVladimir Kondratiev MODULE_PARM_DESC(rx_align_2, " align Rx buffers on 4*n+2, default - no"); 36c406ea7cSVladimir Kondratiev 3752a45702SLior David bool rx_large_buf; 3852a45702SLior David module_param(rx_large_buf, bool, 0444); 3952a45702SLior David MODULE_PARM_DESC(rx_large_buf, " allocate 8KB RX buffers, default - no"); 4052a45702SLior David 410439a5e0SDedy Lansky /* Drop Tx packets in case Tx ring is full */ 420439a5e0SDedy Lansky bool drop_if_ring_full; 430439a5e0SDedy Lansky 44c406ea7cSVladimir Kondratiev static inline uint wil_rx_snaplen(void) 45c406ea7cSVladimir Kondratiev { 46c406ea7cSVladimir Kondratiev return rx_align_2 ? 6 : 0; 47c406ea7cSVladimir Kondratiev } 48c406ea7cSVladimir Kondratiev 4910590c6aSGidon Studinski /* wil_ring_wmark_low - low watermark for available descriptor space */ 5010590c6aSGidon Studinski static inline int wil_ring_wmark_low(struct wil_ring *ring) 512be7d22fSVladimir Kondratiev { 5210590c6aSGidon Studinski return ring->size / 8; 532be7d22fSVladimir Kondratiev } 542be7d22fSVladimir Kondratiev 5510590c6aSGidon Studinski /* wil_ring_wmark_high - high watermark for available descriptor space */ 5610590c6aSGidon Studinski static inline int wil_ring_wmark_high(struct wil_ring *ring) 572be7d22fSVladimir Kondratiev { 5810590c6aSGidon Studinski return ring->size / 4; 595bb6423eSVladimir Kondratiev } 605bb6423eSVladimir Kondratiev 61f9e3033fSDedy Lansky /* returns true if num avail descriptors is lower than wmark_low */ 6210590c6aSGidon Studinski static inline int wil_ring_avail_low(struct wil_ring *ring) 63f9e3033fSDedy Lansky { 6410590c6aSGidon Studinski return wil_ring_avail_tx(ring) < wil_ring_wmark_low(ring); 65f9e3033fSDedy Lansky } 66f9e3033fSDedy Lansky 67f9e3033fSDedy Lansky /* returns true if num avail descriptors is higher than wmark_high */ 6810590c6aSGidon Studinski static inline int wil_ring_avail_high(struct wil_ring *ring) 69f9e3033fSDedy Lansky { 7010590c6aSGidon Studinski return wil_ring_avail_tx(ring) > wil_ring_wmark_high(ring); 71f9e3033fSDedy Lansky } 72f9e3033fSDedy Lansky 73fe9ee51eSMaya Erez /* returns true when all tx vrings are empty */ 74fe9ee51eSMaya Erez bool wil_is_tx_idle(struct wil6210_priv *wil) 75fe9ee51eSMaya Erez { 76fe9ee51eSMaya Erez int i; 77fe9ee51eSMaya Erez unsigned long data_comp_to; 78df2b5388SMaya Erez int min_ring_id = wil_get_min_tx_ring_id(wil); 79fe9ee51eSMaya Erez 80df2b5388SMaya Erez for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 8110590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[i]; 8210590c6aSGidon Studinski int vring_index = vring - wil->ring_tx; 8310590c6aSGidon Studinski struct wil_ring_tx_data *txdata = 8410590c6aSGidon Studinski &wil->ring_tx_data[vring_index]; 85fe9ee51eSMaya Erez 86fe9ee51eSMaya Erez spin_lock(&txdata->lock); 87fe9ee51eSMaya Erez 88fe9ee51eSMaya Erez if (!vring->va || !txdata->enabled) { 89fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 90fe9ee51eSMaya Erez continue; 91fe9ee51eSMaya Erez } 92fe9ee51eSMaya Erez 93fe9ee51eSMaya Erez data_comp_to = jiffies + msecs_to_jiffies( 94fe9ee51eSMaya Erez WIL_DATA_COMPLETION_TO_MS); 95fe9ee51eSMaya Erez if (test_bit(wil_status_napi_en, wil->status)) { 9610590c6aSGidon Studinski while (!wil_ring_is_empty(vring)) { 97fe9ee51eSMaya Erez if (time_after(jiffies, data_comp_to)) { 98fe9ee51eSMaya Erez wil_dbg_pm(wil, 99fe9ee51eSMaya Erez "TO waiting for idle tx\n"); 100fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 101fe9ee51eSMaya Erez return false; 102fe9ee51eSMaya Erez } 103fe9ee51eSMaya Erez wil_dbg_ratelimited(wil, 104fe9ee51eSMaya Erez "tx vring is not empty -> NAPI\n"); 105fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 106fe9ee51eSMaya Erez napi_synchronize(&wil->napi_tx); 107fe9ee51eSMaya Erez msleep(20); 108fe9ee51eSMaya Erez spin_lock(&txdata->lock); 109fe9ee51eSMaya Erez if (!vring->va || !txdata->enabled) 110fe9ee51eSMaya Erez break; 111fe9ee51eSMaya Erez } 112fe9ee51eSMaya Erez } 113fe9ee51eSMaya Erez 114fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 115fe9ee51eSMaya Erez } 116fe9ee51eSMaya Erez 117fe9ee51eSMaya Erez return true; 118fe9ee51eSMaya Erez } 119fe9ee51eSMaya Erez 12010590c6aSGidon Studinski static int wil_vring_alloc(struct wil6210_priv *wil, struct wil_ring *vring) 1212be7d22fSVladimir Kondratiev { 1222be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 1232be7d22fSVladimir Kondratiev size_t sz = vring->size * sizeof(vring->va[0]); 1242be7d22fSVladimir Kondratiev uint i; 1252be7d22fSVladimir Kondratiev 126af3db60aSLazar Alexei wil_dbg_misc(wil, "vring_alloc:\n"); 1279cf10d62SVladimir Kondratiev 1282be7d22fSVladimir Kondratiev BUILD_BUG_ON(sizeof(vring->va[0]) != 32); 1292be7d22fSVladimir Kondratiev 1302be7d22fSVladimir Kondratiev vring->swhead = 0; 1312be7d22fSVladimir Kondratiev vring->swtail = 0; 132f88f113aSVladimir Kondratiev vring->ctx = kcalloc(vring->size, sizeof(vring->ctx[0]), GFP_KERNEL); 1332be7d22fSVladimir Kondratiev if (!vring->ctx) { 1342be7d22fSVladimir Kondratiev vring->va = NULL; 1352be7d22fSVladimir Kondratiev return -ENOMEM; 1362be7d22fSVladimir Kondratiev } 137f2de576dSHamad Kadmany 1380436fd9aSVladimir Shulman /* vring->va should be aligned on its size rounded up to power of 2 139f2de576dSHamad Kadmany * This is granted by the dma_alloc_coherent. 140f2de576dSHamad Kadmany * 141f2de576dSHamad Kadmany * HW has limitation that all vrings addresses must share the same 142f2de576dSHamad Kadmany * upper 16 msb bits part of 48 bits address. To workaround that, 1433dc2c13bSLazar Alexei * if we are using more than 32 bit addresses switch to 32 bit 1443dc2c13bSLazar Alexei * allocation before allocating vring memory. 145f2de576dSHamad Kadmany * 146f2de576dSHamad Kadmany * There's no check for the return value of dma_set_mask_and_coherent, 147f2de576dSHamad Kadmany * since we assume if we were able to set the mask during 148f2de576dSHamad Kadmany * initialization in this system it will not fail if we set it again 1492be7d22fSVladimir Kondratiev */ 1503dc2c13bSLazar Alexei if (wil->dma_addr_size > 32) 151f2de576dSHamad Kadmany dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); 152f2de576dSHamad Kadmany 1532be7d22fSVladimir Kondratiev vring->va = dma_alloc_coherent(dev, sz, &vring->pa, GFP_KERNEL); 1542be7d22fSVladimir Kondratiev if (!vring->va) { 1552be7d22fSVladimir Kondratiev kfree(vring->ctx); 1562be7d22fSVladimir Kondratiev vring->ctx = NULL; 1572be7d22fSVladimir Kondratiev return -ENOMEM; 1582be7d22fSVladimir Kondratiev } 159f2de576dSHamad Kadmany 1603dc2c13bSLazar Alexei if (wil->dma_addr_size > 32) 1613dc2c13bSLazar Alexei dma_set_mask_and_coherent(dev, 1623dc2c13bSLazar Alexei DMA_BIT_MASK(wil->dma_addr_size)); 163f2de576dSHamad Kadmany 1642be7d22fSVladimir Kondratiev /* initially, all descriptors are SW owned 1652be7d22fSVladimir Kondratiev * For Tx and Rx, ownership bit is at the same location, thus 1662be7d22fSVladimir Kondratiev * we can use any 1672be7d22fSVladimir Kondratiev */ 1682be7d22fSVladimir Kondratiev for (i = 0; i < vring->size; i++) { 16910590c6aSGidon Studinski volatile struct vring_tx_desc *_d = 17010590c6aSGidon Studinski &vring->va[i].tx.legacy; 1718fe59627SVladimir Kondratiev 17268ada71eSVladimir Kondratiev _d->dma.status = TX_DMA_STATUS_DU; 1732be7d22fSVladimir Kondratiev } 1742be7d22fSVladimir Kondratiev 17539c52ee8SVladimir Kondratiev wil_dbg_misc(wil, "vring[%d] 0x%p:%pad 0x%p\n", vring->size, 17639c52ee8SVladimir Kondratiev vring->va, &vring->pa, vring->ctx); 1772be7d22fSVladimir Kondratiev 1782be7d22fSVladimir Kondratiev return 0; 1792be7d22fSVladimir Kondratiev } 1802be7d22fSVladimir Kondratiev 1819202d7b6SMaya Erez static void wil_txdesc_unmap(struct device *dev, union wil_tx_desc *desc, 1822232abd5SVladimir Kondratiev struct wil_ctx *ctx) 1832232abd5SVladimir Kondratiev { 1849202d7b6SMaya Erez struct vring_tx_desc *d = &desc->legacy; 1852232abd5SVladimir Kondratiev dma_addr_t pa = wil_desc_addr(&d->dma.addr); 1862232abd5SVladimir Kondratiev u16 dmalen = le16_to_cpu(d->dma.length); 1878fe59627SVladimir Kondratiev 1882232abd5SVladimir Kondratiev switch (ctx->mapped_as) { 1892232abd5SVladimir Kondratiev case wil_mapped_as_single: 1902232abd5SVladimir Kondratiev dma_unmap_single(dev, pa, dmalen, DMA_TO_DEVICE); 1912232abd5SVladimir Kondratiev break; 1922232abd5SVladimir Kondratiev case wil_mapped_as_page: 1932232abd5SVladimir Kondratiev dma_unmap_page(dev, pa, dmalen, DMA_TO_DEVICE); 1942232abd5SVladimir Kondratiev break; 1952232abd5SVladimir Kondratiev default: 1962232abd5SVladimir Kondratiev break; 1972232abd5SVladimir Kondratiev } 1982232abd5SVladimir Kondratiev } 1992232abd5SVladimir Kondratiev 20096c93589SGidon Studinski static void wil_vring_free(struct wil6210_priv *wil, struct wil_ring *vring) 2012be7d22fSVladimir Kondratiev { 2022be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 2032be7d22fSVladimir Kondratiev size_t sz = vring->size * sizeof(vring->va[0]); 2042be7d22fSVladimir Kondratiev 2059b1ba7b2SVladimir Kondratiev lockdep_assert_held(&wil->mutex); 20696c93589SGidon Studinski if (!vring->is_rx) { 20710590c6aSGidon Studinski int vring_index = vring - wil->ring_tx; 208ef77285fSVladimir Kondratiev 209ef77285fSVladimir Kondratiev wil_dbg_misc(wil, "free Tx vring %d [%d] 0x%p:%pad 0x%p\n", 210ef77285fSVladimir Kondratiev vring_index, vring->size, vring->va, 211ef77285fSVladimir Kondratiev &vring->pa, vring->ctx); 212ef77285fSVladimir Kondratiev } else { 213ef77285fSVladimir Kondratiev wil_dbg_misc(wil, "free Rx vring [%d] 0x%p:%pad 0x%p\n", 214ef77285fSVladimir Kondratiev vring->size, vring->va, 215ef77285fSVladimir Kondratiev &vring->pa, vring->ctx); 216ef77285fSVladimir Kondratiev } 217ef77285fSVladimir Kondratiev 21810590c6aSGidon Studinski while (!wil_ring_is_empty(vring)) { 21968ada71eSVladimir Kondratiev dma_addr_t pa; 2207e594444SVladimir Kondratiev u16 dmalen; 221f88f113aSVladimir Kondratiev struct wil_ctx *ctx; 22268ada71eSVladimir Kondratiev 22396c93589SGidon Studinski if (!vring->is_rx) { 22468ada71eSVladimir Kondratiev struct vring_tx_desc dd, *d = ⅆ 22568ada71eSVladimir Kondratiev volatile struct vring_tx_desc *_d = 22610590c6aSGidon Studinski &vring->va[vring->swtail].tx.legacy; 22768ada71eSVladimir Kondratiev 228f88f113aSVladimir Kondratiev ctx = &vring->ctx[vring->swtail]; 22934b8886eSMaya Erez if (!ctx) { 23034b8886eSMaya Erez wil_dbg_txrx(wil, 23134b8886eSMaya Erez "ctx(%d) was already completed\n", 23234b8886eSMaya Erez vring->swtail); 23310590c6aSGidon Studinski vring->swtail = wil_ring_next_tail(vring); 23434b8886eSMaya Erez continue; 23534b8886eSMaya Erez } 23668ada71eSVladimir Kondratiev *d = *_d; 2379202d7b6SMaya Erez wil_txdesc_unmap(dev, (union wil_tx_desc *)d, ctx); 238f88f113aSVladimir Kondratiev if (ctx->skb) 239f88f113aSVladimir Kondratiev dev_kfree_skb_any(ctx->skb); 24010590c6aSGidon Studinski vring->swtail = wil_ring_next_tail(vring); 2412be7d22fSVladimir Kondratiev } else { /* rx */ 24268ada71eSVladimir Kondratiev struct vring_rx_desc dd, *d = ⅆ 24368ada71eSVladimir Kondratiev volatile struct vring_rx_desc *_d = 24410590c6aSGidon Studinski &vring->va[vring->swhead].rx.legacy; 24568ada71eSVladimir Kondratiev 246f88f113aSVladimir Kondratiev ctx = &vring->ctx[vring->swhead]; 24768ada71eSVladimir Kondratiev *d = *_d; 24868ada71eSVladimir Kondratiev pa = wil_desc_addr(&d->dma.addr); 2497e594444SVladimir Kondratiev dmalen = le16_to_cpu(d->dma.length); 2507e594444SVladimir Kondratiev dma_unmap_single(dev, pa, dmalen, DMA_FROM_DEVICE); 251f88f113aSVladimir Kondratiev kfree_skb(ctx->skb); 25210590c6aSGidon Studinski wil_ring_advance_head(vring, 1); 2532be7d22fSVladimir Kondratiev } 2542be7d22fSVladimir Kondratiev } 2552be7d22fSVladimir Kondratiev dma_free_coherent(dev, sz, (void *)vring->va, vring->pa); 2562be7d22fSVladimir Kondratiev kfree(vring->ctx); 2572be7d22fSVladimir Kondratiev vring->pa = 0; 2582be7d22fSVladimir Kondratiev vring->va = NULL; 2592be7d22fSVladimir Kondratiev vring->ctx = NULL; 2602be7d22fSVladimir Kondratiev } 2612be7d22fSVladimir Kondratiev 2622be7d22fSVladimir Kondratiev /** 2632be7d22fSVladimir Kondratiev * Allocate one skb for Rx VRING 2642be7d22fSVladimir Kondratiev * 2652be7d22fSVladimir Kondratiev * Safe to call from IRQ 2662be7d22fSVladimir Kondratiev */ 26710590c6aSGidon Studinski static int wil_vring_alloc_skb(struct wil6210_priv *wil, struct wil_ring *vring, 2682be7d22fSVladimir Kondratiev u32 i, int headroom) 2692be7d22fSVladimir Kondratiev { 2702be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 27152a45702SLior David unsigned int sz = wil->rx_buf_len + ETH_HLEN + wil_rx_snaplen(); 27268ada71eSVladimir Kondratiev struct vring_rx_desc dd, *d = ⅆ 27310590c6aSGidon Studinski volatile struct vring_rx_desc *_d = &vring->va[i].rx.legacy; 2742be7d22fSVladimir Kondratiev dma_addr_t pa; 2752be7d22fSVladimir Kondratiev struct sk_buff *skb = dev_alloc_skb(sz + headroom); 2768fe59627SVladimir Kondratiev 2772be7d22fSVladimir Kondratiev if (unlikely(!skb)) 2782be7d22fSVladimir Kondratiev return -ENOMEM; 2792be7d22fSVladimir Kondratiev 2802be7d22fSVladimir Kondratiev skb_reserve(skb, headroom); 2812be7d22fSVladimir Kondratiev skb_put(skb, sz); 2822be7d22fSVladimir Kondratiev 2830b853210SMaya Erez /** 2840b853210SMaya Erez * Make sure that the network stack calculates checksum for packets 2850b853210SMaya Erez * which failed the HW checksum calculation 2860b853210SMaya Erez */ 2870b853210SMaya Erez skb->ip_summed = CHECKSUM_NONE; 2880b853210SMaya Erez 2892be7d22fSVladimir Kondratiev pa = dma_map_single(dev, skb->data, skb->len, DMA_FROM_DEVICE); 2902be7d22fSVladimir Kondratiev if (unlikely(dma_mapping_error(dev, pa))) { 2912be7d22fSVladimir Kondratiev kfree_skb(skb); 2922be7d22fSVladimir Kondratiev return -ENOMEM; 2932be7d22fSVladimir Kondratiev } 2942be7d22fSVladimir Kondratiev 29548c963afSVladimir Kondratiev d->dma.d0 = RX_DMA_D0_CMD_DMA_RT | RX_DMA_D0_CMD_DMA_IT; 29668ada71eSVladimir Kondratiev wil_desc_addr_set(&d->dma.addr, pa); 2972be7d22fSVladimir Kondratiev /* ip_length don't care */ 2982be7d22fSVladimir Kondratiev /* b11 don't care */ 2992be7d22fSVladimir Kondratiev /* error don't care */ 3002be7d22fSVladimir Kondratiev d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ 3017e594444SVladimir Kondratiev d->dma.length = cpu_to_le16(sz); 30268ada71eSVladimir Kondratiev *_d = *d; 303f88f113aSVladimir Kondratiev vring->ctx[i].skb = skb; 3042be7d22fSVladimir Kondratiev 3052be7d22fSVladimir Kondratiev return 0; 3062be7d22fSVladimir Kondratiev } 3072be7d22fSVladimir Kondratiev 3082be7d22fSVladimir Kondratiev /** 3092be7d22fSVladimir Kondratiev * Adds radiotap header 3102be7d22fSVladimir Kondratiev * 3112be7d22fSVladimir Kondratiev * Any error indicated as "Bad FCS" 3122be7d22fSVladimir Kondratiev * 3132be7d22fSVladimir Kondratiev * Vendor data for 04:ce:14-1 (Wilocity-1) consists of: 3142be7d22fSVladimir Kondratiev * - Rx descriptor: 32 bytes 3152be7d22fSVladimir Kondratiev * - Phy info 3162be7d22fSVladimir Kondratiev */ 3172be7d22fSVladimir Kondratiev static void wil_rx_add_radiotap_header(struct wil6210_priv *wil, 31833e61169SVladimir Kondratiev struct sk_buff *skb) 3192be7d22fSVladimir Kondratiev { 3202be7d22fSVladimir Kondratiev struct wil6210_rtap { 3212be7d22fSVladimir Kondratiev struct ieee80211_radiotap_header rthdr; 3222be7d22fSVladimir Kondratiev /* fields should be in the order of bits in rthdr.it_present */ 3232be7d22fSVladimir Kondratiev /* flags */ 3242be7d22fSVladimir Kondratiev u8 flags; 3252be7d22fSVladimir Kondratiev /* channel */ 3262be7d22fSVladimir Kondratiev __le16 chnl_freq __aligned(2); 3272be7d22fSVladimir Kondratiev __le16 chnl_flags; 3282be7d22fSVladimir Kondratiev /* MCS */ 3292be7d22fSVladimir Kondratiev u8 mcs_present; 3302be7d22fSVladimir Kondratiev u8 mcs_flags; 3312be7d22fSVladimir Kondratiev u8 mcs_index; 3322be7d22fSVladimir Kondratiev } __packed; 33333e61169SVladimir Kondratiev struct vring_rx_desc *d = wil_skb_rxdesc(skb); 334387f3794SMaya Erez struct wil6210_rtap *rtap; 3352be7d22fSVladimir Kondratiev int rtap_len = sizeof(struct wil6210_rtap); 3367d3e4dbeSLior David struct ieee80211_channel *ch = wil->monitor_chandef.chan; 3372be7d22fSVladimir Kondratiev 3382be7d22fSVladimir Kondratiev if (skb_headroom(skb) < rtap_len && 3392be7d22fSVladimir Kondratiev pskb_expand_head(skb, rtap_len, 0, GFP_ATOMIC)) { 3409165dabbSMasanari Iida wil_err(wil, "Unable to expand headroom to %d\n", rtap_len); 3412be7d22fSVladimir Kondratiev return; 3422be7d22fSVladimir Kondratiev } 3432be7d22fSVladimir Kondratiev 344387f3794SMaya Erez rtap = skb_push(skb, rtap_len); 345387f3794SMaya Erez memset(rtap, 0, rtap_len); 3462be7d22fSVladimir Kondratiev 347387f3794SMaya Erez rtap->rthdr.it_version = PKTHDR_RADIOTAP_VERSION; 348387f3794SMaya Erez rtap->rthdr.it_len = cpu_to_le16(rtap_len); 349387f3794SMaya Erez rtap->rthdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | 3502be7d22fSVladimir Kondratiev (1 << IEEE80211_RADIOTAP_CHANNEL) | 3512be7d22fSVladimir Kondratiev (1 << IEEE80211_RADIOTAP_MCS)); 3522be7d22fSVladimir Kondratiev if (d->dma.status & RX_DMA_STATUS_ERROR) 353387f3794SMaya Erez rtap->flags |= IEEE80211_RADIOTAP_F_BADFCS; 3542be7d22fSVladimir Kondratiev 355387f3794SMaya Erez rtap->chnl_freq = cpu_to_le16(ch ? ch->center_freq : 58320); 356387f3794SMaya Erez rtap->chnl_flags = cpu_to_le16(0); 3572be7d22fSVladimir Kondratiev 358387f3794SMaya Erez rtap->mcs_present = IEEE80211_RADIOTAP_MCS_HAVE_MCS; 359387f3794SMaya Erez rtap->mcs_flags = 0; 360387f3794SMaya Erez rtap->mcs_index = wil_rxdesc_mcs(d); 3612be7d22fSVladimir Kondratiev } 3622be7d22fSVladimir Kondratiev 3637be13fc3SGidon Studinski static bool wil_is_rx_idle(struct wil6210_priv *wil) 364fe9ee51eSMaya Erez { 365fe9ee51eSMaya Erez struct vring_rx_desc *_d; 36610590c6aSGidon Studinski struct wil_ring *ring = &wil->ring_rx; 367fe9ee51eSMaya Erez 36810590c6aSGidon Studinski _d = (struct vring_rx_desc *)&ring->va[ring->swhead].rx.legacy; 369fe9ee51eSMaya Erez if (_d->dma.status & RX_DMA_STATUS_DU) 370fe9ee51eSMaya Erez return false; 371fe9ee51eSMaya Erez 372fe9ee51eSMaya Erez return true; 373fe9ee51eSMaya Erez } 374fe9ee51eSMaya Erez 375bf0353a6SAhmad Masri static int wil_rx_get_cid_by_skb(struct wil6210_priv *wil, struct sk_buff *skb) 376bf0353a6SAhmad Masri { 377bf0353a6SAhmad Masri struct vring_rx_desc *d = wil_skb_rxdesc(skb); 378bf0353a6SAhmad Masri int mid = wil_rxdesc_mid(d); 379bf0353a6SAhmad Masri struct wil6210_vif *vif = wil->vifs[mid]; 380bf0353a6SAhmad Masri /* cid from DMA descriptor is limited to 3 bits. 381bf0353a6SAhmad Masri * In case of cid>=8, the value would be cid modulo 8 and we need to 382bf0353a6SAhmad Masri * find real cid by locating the transmitter (ta) inside sta array 383bf0353a6SAhmad Masri */ 384bf0353a6SAhmad Masri int cid = wil_rxdesc_cid(d); 385bf0353a6SAhmad Masri unsigned int snaplen = wil_rx_snaplen(); 386bf0353a6SAhmad Masri struct ieee80211_hdr_3addr *hdr; 387bf0353a6SAhmad Masri int i; 388bf0353a6SAhmad Masri unsigned char *ta; 389bf0353a6SAhmad Masri u8 ftype; 390bf0353a6SAhmad Masri 391bf0353a6SAhmad Masri /* in monitor mode there are no connections */ 392bf0353a6SAhmad Masri if (vif->wdev.iftype == NL80211_IFTYPE_MONITOR) 393bf0353a6SAhmad Masri return cid; 394bf0353a6SAhmad Masri 395bf0353a6SAhmad Masri ftype = wil_rxdesc_ftype(d) << 2; 396bf0353a6SAhmad Masri if (likely(ftype == IEEE80211_FTYPE_DATA)) { 397bf0353a6SAhmad Masri if (unlikely(skb->len < ETH_HLEN + snaplen)) { 398bf0353a6SAhmad Masri wil_err_ratelimited(wil, 399bf0353a6SAhmad Masri "Short data frame, len = %d\n", 400bf0353a6SAhmad Masri skb->len); 401bf0353a6SAhmad Masri return -ENOENT; 402bf0353a6SAhmad Masri } 4036d1ba32cSAhmad Masri ta = wil_skb_get_sa(skb); 404bf0353a6SAhmad Masri } else { 405bf0353a6SAhmad Masri if (unlikely(skb->len < sizeof(struct ieee80211_hdr_3addr))) { 406bf0353a6SAhmad Masri wil_err_ratelimited(wil, "Short frame, len = %d\n", 407bf0353a6SAhmad Masri skb->len); 408bf0353a6SAhmad Masri return -ENOENT; 409bf0353a6SAhmad Masri } 410bf0353a6SAhmad Masri hdr = (void *)skb->data; 411bf0353a6SAhmad Masri ta = hdr->addr2; 412bf0353a6SAhmad Masri } 413bf0353a6SAhmad Masri 414ddf7afddSAhmad Masri if (wil->max_assoc_sta <= WIL6210_RX_DESC_MAX_CID) 415bf0353a6SAhmad Masri return cid; 416bf0353a6SAhmad Masri 417bf0353a6SAhmad Masri /* assuming no concurrency between AP interfaces and STA interfaces. 418bf0353a6SAhmad Masri * multista is used only in P2P_GO or AP mode. In other modes return 419bf0353a6SAhmad Masri * cid from the rx descriptor 420bf0353a6SAhmad Masri */ 421bf0353a6SAhmad Masri if (vif->wdev.iftype != NL80211_IFTYPE_P2P_GO && 422bf0353a6SAhmad Masri vif->wdev.iftype != NL80211_IFTYPE_AP) 423bf0353a6SAhmad Masri return cid; 424bf0353a6SAhmad Masri 425bf0353a6SAhmad Masri /* For Rx packets cid from rx descriptor is limited to 3 bits (0..7), 426bf0353a6SAhmad Masri * to find the real cid, compare transmitter address with the stored 427bf0353a6SAhmad Masri * stations mac address in the driver sta array 428bf0353a6SAhmad Masri */ 429ddf7afddSAhmad Masri for (i = cid; i < wil->max_assoc_sta; i += WIL6210_RX_DESC_MAX_CID) { 430bf0353a6SAhmad Masri if (wil->sta[i].status != wil_sta_unused && 431bf0353a6SAhmad Masri ether_addr_equal(wil->sta[i].addr, ta)) { 432bf0353a6SAhmad Masri cid = i; 433bf0353a6SAhmad Masri break; 434bf0353a6SAhmad Masri } 435bf0353a6SAhmad Masri } 436ddf7afddSAhmad Masri if (i >= wil->max_assoc_sta) { 437bf0353a6SAhmad Masri wil_err_ratelimited(wil, "Could not find cid for frame with transmit addr = %pM, iftype = %d, frametype = %d, len = %d\n", 438bf0353a6SAhmad Masri ta, vif->wdev.iftype, ftype, skb->len); 439bf0353a6SAhmad Masri cid = -ENOENT; 440bf0353a6SAhmad Masri } 441bf0353a6SAhmad Masri 442bf0353a6SAhmad Masri return cid; 443bf0353a6SAhmad Masri } 444bf0353a6SAhmad Masri 4452be7d22fSVladimir Kondratiev /** 4462be7d22fSVladimir Kondratiev * reap 1 frame from @swhead 4472be7d22fSVladimir Kondratiev * 44833e61169SVladimir Kondratiev * Rx descriptor copied to skb->cb 44933e61169SVladimir Kondratiev * 4502be7d22fSVladimir Kondratiev * Safe to call from IRQ 4512be7d22fSVladimir Kondratiev */ 4522be7d22fSVladimir Kondratiev static struct sk_buff *wil_vring_reap_rx(struct wil6210_priv *wil, 45310590c6aSGidon Studinski struct wil_ring *vring) 4542be7d22fSVladimir Kondratiev { 4552be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 4565bd60982SLior David struct wil6210_vif *vif; 4575bd60982SLior David struct net_device *ndev; 45868ada71eSVladimir Kondratiev volatile struct vring_rx_desc *_d; 45968ada71eSVladimir Kondratiev struct vring_rx_desc *d; 4602be7d22fSVladimir Kondratiev struct sk_buff *skb; 4612be7d22fSVladimir Kondratiev dma_addr_t pa; 462c406ea7cSVladimir Kondratiev unsigned int snaplen = wil_rx_snaplen(); 46352a45702SLior David unsigned int sz = wil->rx_buf_len + ETH_HLEN + snaplen; 4647e594444SVladimir Kondratiev u16 dmalen; 4652be7d22fSVladimir Kondratiev u8 ftype; 4665bd60982SLior David int cid, mid; 4673b282bc6SVladimir Kondratiev int i; 468c8b78b5fSVladimir Kondratiev struct wil_net_stats *stats; 469c8b78b5fSVladimir Kondratiev 470bf0353a6SAhmad Masri BUILD_BUG_ON(sizeof(struct skb_rx_info) > sizeof(skb->cb)); 47133e61169SVladimir Kondratiev 4723b282bc6SVladimir Kondratiev again: 47310590c6aSGidon Studinski if (unlikely(wil_ring_is_empty(vring))) 4742be7d22fSVladimir Kondratiev return NULL; 4752be7d22fSVladimir Kondratiev 4763b282bc6SVladimir Kondratiev i = (int)vring->swhead; 47710590c6aSGidon Studinski _d = &vring->va[i].rx.legacy; 47833c477fdSVladimir Kondratiev if (unlikely(!(_d->dma.status & RX_DMA_STATUS_DU))) { 4792be7d22fSVladimir Kondratiev /* it is not error, we just reached end of Rx done area */ 4802be7d22fSVladimir Kondratiev return NULL; 4812be7d22fSVladimir Kondratiev } 4822be7d22fSVladimir Kondratiev 483148416a9SVladimir Kondratiev skb = vring->ctx[i].skb; 484148416a9SVladimir Kondratiev vring->ctx[i].skb = NULL; 48510590c6aSGidon Studinski wil_ring_advance_head(vring, 1); 486148416a9SVladimir Kondratiev if (!skb) { 487148416a9SVladimir Kondratiev wil_err(wil, "No Rx skb at [%d]\n", i); 4883b282bc6SVladimir Kondratiev goto again; 489148416a9SVladimir Kondratiev } 49068ada71eSVladimir Kondratiev d = wil_skb_rxdesc(skb); 49168ada71eSVladimir Kondratiev *d = *_d; 49268ada71eSVladimir Kondratiev pa = wil_desc_addr(&d->dma.addr); 49368ada71eSVladimir Kondratiev 49468ada71eSVladimir Kondratiev dma_unmap_single(dev, pa, sz, DMA_FROM_DEVICE); 49568ada71eSVladimir Kondratiev dmalen = le16_to_cpu(d->dma.length); 49668ada71eSVladimir Kondratiev 497148416a9SVladimir Kondratiev trace_wil6210_rx(i, d); 498148416a9SVladimir Kondratiev wil_dbg_txrx(wil, "Rx[%3d] : %d bytes\n", i, dmalen); 499a8313341SVladimir Kondratiev wil_hex_dump_txrx("RxD ", DUMP_PREFIX_NONE, 32, 4, 50068ada71eSVladimir Kondratiev (const void *)d, sizeof(*d), false); 50168ada71eSVladimir Kondratiev 5025bd60982SLior David mid = wil_rxdesc_mid(d); 5035bd60982SLior David vif = wil->vifs[mid]; 5045bd60982SLior David 5055bd60982SLior David if (unlikely(!vif)) { 5065bd60982SLior David wil_dbg_txrx(wil, "skipped RX descriptor with invalid mid %d", 5075bd60982SLior David mid); 5085bd60982SLior David kfree_skb(skb); 5095bd60982SLior David goto again; 5105bd60982SLior David } 5115bd60982SLior David ndev = vif_to_ndev(vif); 51233c477fdSVladimir Kondratiev if (unlikely(dmalen > sz)) { 513bf0353a6SAhmad Masri wil_err_ratelimited(wil, "Rx size too large: %d bytes!\n", 514bf0353a6SAhmad Masri dmalen); 515110dea00SWei Yongjun kfree_skb(skb); 5163b282bc6SVladimir Kondratiev goto again; 517e270045bSVladimir Kondratiev } 5187e594444SVladimir Kondratiev skb_trim(skb, dmalen); 51933e61169SVladimir Kondratiev 5201cbbcb08SVladimir Kondratiev prefetch(skb->data); 5211cbbcb08SVladimir Kondratiev 522c0d37713SVladimir Kondratiev wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, 523c0d37713SVladimir Kondratiev skb->data, skb_headlen(skb), false); 524c0d37713SVladimir Kondratiev 525bf0353a6SAhmad Masri cid = wil_rx_get_cid_by_skb(wil, skb); 526bf0353a6SAhmad Masri if (cid == -ENOENT) { 527bf0353a6SAhmad Masri kfree_skb(skb); 528bf0353a6SAhmad Masri goto again; 529bf0353a6SAhmad Masri } 530bf0353a6SAhmad Masri wil_skb_set_cid(skb, (u8)cid); 531bf0353a6SAhmad Masri stats = &wil->sta[cid].stats; 532bf0353a6SAhmad Masri 533c8b78b5fSVladimir Kondratiev stats->last_mcs_rx = wil_rxdesc_mcs(d); 534c4a110d8SVladimir Kondratiev if (stats->last_mcs_rx < ARRAY_SIZE(stats->rx_per_mcs)) 535c4a110d8SVladimir Kondratiev stats->rx_per_mcs[stats->last_mcs_rx]++; 5362be7d22fSVladimir Kondratiev 5372be7d22fSVladimir Kondratiev /* use radiotap header only if required */ 5382be7d22fSVladimir Kondratiev if (ndev->type == ARPHRD_IEEE80211_RADIOTAP) 53933e61169SVladimir Kondratiev wil_rx_add_radiotap_header(wil, skb); 5402be7d22fSVladimir Kondratiev 5412be7d22fSVladimir Kondratiev /* no extra checks if in sniffer mode */ 5422be7d22fSVladimir Kondratiev if (ndev->type != ARPHRD_ETHER) 5432be7d22fSVladimir Kondratiev return skb; 544a8313341SVladimir Kondratiev /* Non-data frames may be delivered through Rx DMA channel (ex: BAR) 5452be7d22fSVladimir Kondratiev * Driver should recognize it by frame type, that is found 5462be7d22fSVladimir Kondratiev * in Rx descriptor. If type is not data, it is 802.11 frame as is 5472be7d22fSVladimir Kondratiev */ 54868ada71eSVladimir Kondratiev ftype = wil_rxdesc_ftype(d) << 2; 54933c477fdSVladimir Kondratiev if (unlikely(ftype != IEEE80211_FTYPE_DATA)) { 550a8313341SVladimir Kondratiev u8 fc1 = wil_rxdesc_fc1(d); 551a8313341SVladimir Kondratiev int tid = wil_rxdesc_tid(d); 552a8313341SVladimir Kondratiev u16 seq = wil_rxdesc_seq(d); 553a8313341SVladimir Kondratiev 554a8313341SVladimir Kondratiev wil_dbg_txrx(wil, 555a8313341SVladimir Kondratiev "Non-data frame FC[7:0] 0x%02x MID %d CID %d TID %d Seq 0x%03x\n", 556a8313341SVladimir Kondratiev fc1, mid, cid, tid, seq); 5573b282bc6SVladimir Kondratiev stats->rx_non_data_frame++; 558a8313341SVladimir Kondratiev if (wil_is_back_req(fc1)) { 559a8313341SVladimir Kondratiev wil_dbg_txrx(wil, 560a8313341SVladimir Kondratiev "BAR: MID %d CID %d TID %d Seq 0x%03x\n", 561a8313341SVladimir Kondratiev mid, cid, tid, seq); 5625bd60982SLior David wil_rx_bar(wil, vif, cid, tid, seq); 563a8313341SVladimir Kondratiev } else { 564a8313341SVladimir Kondratiev /* print again all info. One can enable only this 565a8313341SVladimir Kondratiev * without overhead for printing every Rx frame 566a8313341SVladimir Kondratiev */ 567a8313341SVladimir Kondratiev wil_dbg_txrx(wil, 568a8313341SVladimir Kondratiev "Unhandled non-data frame FC[7:0] 0x%02x MID %d CID %d TID %d Seq 0x%03x\n", 569a8313341SVladimir Kondratiev fc1, mid, cid, tid, seq); 570a8313341SVladimir Kondratiev wil_hex_dump_txrx("RxD ", DUMP_PREFIX_NONE, 32, 4, 571a8313341SVladimir Kondratiev (const void *)d, sizeof(*d), false); 572a8313341SVladimir Kondratiev wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, 573a8313341SVladimir Kondratiev skb->data, skb_headlen(skb), false); 574a8313341SVladimir Kondratiev } 5752be7d22fSVladimir Kondratiev kfree_skb(skb); 5763b282bc6SVladimir Kondratiev goto again; 5772be7d22fSVladimir Kondratiev } 5782be7d22fSVladimir Kondratiev 579504937d4SKirshenbaum Erez /* L4 IDENT is on when HW calculated checksum, check status 580504937d4SKirshenbaum Erez * and in case of error drop the packet 581504937d4SKirshenbaum Erez * higher stack layers will handle retransmission (if required) 582504937d4SKirshenbaum Erez */ 58333c477fdSVladimir Kondratiev if (likely(d->dma.status & RX_DMA_STATUS_L4I)) { 584504937d4SKirshenbaum Erez /* L4 protocol identified, csum calculated */ 58533c477fdSVladimir Kondratiev if (likely((d->dma.error & RX_DMA_ERROR_L4_ERR) == 0)) 586504937d4SKirshenbaum Erez skb->ip_summed = CHECKSUM_UNNECESSARY; 5874a68ab10SVladimir Kondratiev /* If HW reports bad checksum, let IP stack re-check it 5884a68ab10SVladimir Kondratiev * For example, HW don't understand Microsoft IP stack that 5894a68ab10SVladimir Kondratiev * mis-calculates TCP checksum - if it should be 0x0, 5904a68ab10SVladimir Kondratiev * it writes 0xffff in violation of RFC 1624 5914a68ab10SVladimir Kondratiev */ 5920b853210SMaya Erez else 5930b853210SMaya Erez stats->rx_csum_err++; 594504937d4SKirshenbaum Erez } 595504937d4SKirshenbaum Erez 596c406ea7cSVladimir Kondratiev if (snaplen) { 597c406ea7cSVladimir Kondratiev /* Packet layout 598c406ea7cSVladimir Kondratiev * +-------+-------+---------+------------+------+ 599c406ea7cSVladimir Kondratiev * | SA(6) | DA(6) | SNAP(6) | ETHTYPE(2) | DATA | 600c406ea7cSVladimir Kondratiev * +-------+-------+---------+------------+------+ 601c406ea7cSVladimir Kondratiev * Need to remove SNAP, shifting SA and DA forward 602c406ea7cSVladimir Kondratiev */ 603c406ea7cSVladimir Kondratiev memmove(skb->data + snaplen, skb->data, 2 * ETH_ALEN); 604c406ea7cSVladimir Kondratiev skb_pull(skb, snaplen); 605c406ea7cSVladimir Kondratiev } 606c406ea7cSVladimir Kondratiev 6072be7d22fSVladimir Kondratiev return skb; 6082be7d22fSVladimir Kondratiev } 6092be7d22fSVladimir Kondratiev 6102be7d22fSVladimir Kondratiev /** 6112be7d22fSVladimir Kondratiev * allocate and fill up to @count buffers in rx ring 6122be7d22fSVladimir Kondratiev * buffers posted at @swtail 6135bd60982SLior David * Note: we have a single RX queue for servicing all VIFs, but we 6145bd60982SLior David * allocate skbs with headroom according to main interface only. This 6155bd60982SLior David * means it will not work with monitor interface together with other VIFs. 6165bd60982SLior David * Currently we only support monitor interface on its own without other VIFs, 6175bd60982SLior David * and we will need to fix this code once we add support. 6182be7d22fSVladimir Kondratiev */ 6192be7d22fSVladimir Kondratiev static int wil_rx_refill(struct wil6210_priv *wil, int count) 6202be7d22fSVladimir Kondratiev { 621e00243faSLior David struct net_device *ndev = wil->main_ndev; 62210590c6aSGidon Studinski struct wil_ring *v = &wil->ring_rx; 6232be7d22fSVladimir Kondratiev u32 next_tail; 6242be7d22fSVladimir Kondratiev int rc = 0; 6252be7d22fSVladimir Kondratiev int headroom = ndev->type == ARPHRD_IEEE80211_RADIOTAP ? 6262be7d22fSVladimir Kondratiev WIL6210_RTAP_SIZE : 0; 6272be7d22fSVladimir Kondratiev 62810590c6aSGidon Studinski for (; next_tail = wil_ring_next_tail(v), 6292be7d22fSVladimir Kondratiev (next_tail != v->swhead) && (count-- > 0); 6302be7d22fSVladimir Kondratiev v->swtail = next_tail) { 6312be7d22fSVladimir Kondratiev rc = wil_vring_alloc_skb(wil, v, v->swtail, headroom); 63233c477fdSVladimir Kondratiev if (unlikely(rc)) { 6333d6b7272SDedy Lansky wil_err_ratelimited(wil, "Error %d in rx refill[%d]\n", 6342be7d22fSVladimir Kondratiev rc, v->swtail); 6352be7d22fSVladimir Kondratiev break; 6362be7d22fSVladimir Kondratiev } 6372be7d22fSVladimir Kondratiev } 638ab6d7cc3SMaya Erez 639ab6d7cc3SMaya Erez /* make sure all writes to descriptors (shared memory) are done before 640ab6d7cc3SMaya Erez * committing them to HW 641ab6d7cc3SMaya Erez */ 642ab6d7cc3SMaya Erez wmb(); 643ab6d7cc3SMaya Erez 644b9eeb512SVladimir Kondratiev wil_w(wil, v->hwtail, v->swtail); 6452be7d22fSVladimir Kondratiev 6462be7d22fSVladimir Kondratiev return rc; 6472be7d22fSVladimir Kondratiev } 6482be7d22fSVladimir Kondratiev 64958527421SVladimir Kondratiev /** 65058527421SVladimir Kondratiev * reverse_memcmp - Compare two areas of memory, in reverse order 65158527421SVladimir Kondratiev * @cs: One area of memory 65258527421SVladimir Kondratiev * @ct: Another area of memory 65358527421SVladimir Kondratiev * @count: The size of the area. 65458527421SVladimir Kondratiev * 65558527421SVladimir Kondratiev * Cut'n'paste from original memcmp (see lib/string.c) 65658527421SVladimir Kondratiev * with minimal modifications 65758527421SVladimir Kondratiev */ 6587be13fc3SGidon Studinski int reverse_memcmp(const void *cs, const void *ct, size_t count) 65958527421SVladimir Kondratiev { 66058527421SVladimir Kondratiev const unsigned char *su1, *su2; 66158527421SVladimir Kondratiev int res = 0; 66258527421SVladimir Kondratiev 66358527421SVladimir Kondratiev for (su1 = cs + count - 1, su2 = ct + count - 1; count > 0; 66458527421SVladimir Kondratiev --su1, --su2, count--) { 66558527421SVladimir Kondratiev res = *su1 - *su2; 66658527421SVladimir Kondratiev if (res) 66758527421SVladimir Kondratiev break; 66858527421SVladimir Kondratiev } 66958527421SVladimir Kondratiev return res; 67058527421SVladimir Kondratiev } 67158527421SVladimir Kondratiev 67258527421SVladimir Kondratiev static int wil_rx_crypto_check(struct wil6210_priv *wil, struct sk_buff *skb) 67358527421SVladimir Kondratiev { 67458527421SVladimir Kondratiev struct vring_rx_desc *d = wil_skb_rxdesc(skb); 675bf0353a6SAhmad Masri int cid = wil_skb_get_cid(skb); 67658527421SVladimir Kondratiev int tid = wil_rxdesc_tid(d); 67758527421SVladimir Kondratiev int key_id = wil_rxdesc_key_id(d); 67858527421SVladimir Kondratiev int mc = wil_rxdesc_mcast(d); 67958527421SVladimir Kondratiev struct wil_sta_info *s = &wil->sta[cid]; 68058527421SVladimir Kondratiev struct wil_tid_crypto_rx *c = mc ? &s->group_crypto_rx : 68158527421SVladimir Kondratiev &s->tid_crypto_rx[tid]; 68258527421SVladimir Kondratiev struct wil_tid_crypto_rx_single *cc = &c->key_id[key_id]; 68358527421SVladimir Kondratiev const u8 *pn = (u8 *)&d->mac.pn_15_0; 68458527421SVladimir Kondratiev 68558527421SVladimir Kondratiev if (!cc->key_set) { 68658527421SVladimir Kondratiev wil_err_ratelimited(wil, 68758527421SVladimir Kondratiev "Key missing. CID %d TID %d MCast %d KEY_ID %d\n", 68858527421SVladimir Kondratiev cid, tid, mc, key_id); 68958527421SVladimir Kondratiev return -EINVAL; 69058527421SVladimir Kondratiev } 69158527421SVladimir Kondratiev 69258527421SVladimir Kondratiev if (reverse_memcmp(pn, cc->pn, IEEE80211_GCMP_PN_LEN) <= 0) { 69358527421SVladimir Kondratiev wil_err_ratelimited(wil, 69458527421SVladimir Kondratiev "Replay attack. CID %d TID %d MCast %d KEY_ID %d PN %6phN last %6phN\n", 69558527421SVladimir Kondratiev cid, tid, mc, key_id, pn, cc->pn); 69658527421SVladimir Kondratiev return -EINVAL; 69758527421SVladimir Kondratiev } 69858527421SVladimir Kondratiev memcpy(cc->pn, pn, IEEE80211_GCMP_PN_LEN); 69958527421SVladimir Kondratiev 70058527421SVladimir Kondratiev return 0; 70158527421SVladimir Kondratiev } 70258527421SVladimir Kondratiev 703e15af41cSDedy Lansky static int wil_rx_error_check(struct wil6210_priv *wil, struct sk_buff *skb, 704e15af41cSDedy Lansky struct wil_net_stats *stats) 705e15af41cSDedy Lansky { 706e15af41cSDedy Lansky struct vring_rx_desc *d = wil_skb_rxdesc(skb); 707e15af41cSDedy Lansky 708e15af41cSDedy Lansky if ((d->dma.status & RX_DMA_STATUS_ERROR) && 709e15af41cSDedy Lansky (d->dma.error & RX_DMA_ERROR_MIC)) { 710e15af41cSDedy Lansky stats->rx_mic_error++; 711e15af41cSDedy Lansky wil_dbg_txrx(wil, "MIC error, dropping packet\n"); 712e15af41cSDedy Lansky return -EFAULT; 713e15af41cSDedy Lansky } 714e15af41cSDedy Lansky 715e15af41cSDedy Lansky return 0; 716e15af41cSDedy Lansky } 717e15af41cSDedy Lansky 7187be13fc3SGidon Studinski static void wil_get_netif_rx_params(struct sk_buff *skb, int *cid, 7197be13fc3SGidon Studinski int *security) 7207be13fc3SGidon Studinski { 7217be13fc3SGidon Studinski struct vring_rx_desc *d = wil_skb_rxdesc(skb); 7227be13fc3SGidon Studinski 723bf0353a6SAhmad Masri *cid = wil_skb_get_cid(skb); 7247be13fc3SGidon Studinski *security = wil_rxdesc_security(d); 7257be13fc3SGidon Studinski } 7267be13fc3SGidon Studinski 7272be7d22fSVladimir Kondratiev /* 7282be7d22fSVladimir Kondratiev * Pass Rx packet to the netif. Update statistics. 729e0287c4aSVladimir Kondratiev * Called in softirq context (NAPI poll). 7302be7d22fSVladimir Kondratiev */ 731b4490f42SVladimir Kondratiev void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) 7322be7d22fSVladimir Kondratiev { 733c42da999SVladimir Kondratiev gro_result_t rc = GRO_NORMAL; 734e00243faSLior David struct wil6210_vif *vif = ndev_to_vif(ndev); 735c8b78b5fSVladimir Kondratiev struct wil6210_priv *wil = ndev_to_wil(ndev); 736e00243faSLior David struct wireless_dev *wdev = vif_to_wdev(vif); 7372be7d22fSVladimir Kondratiev unsigned int len = skb->len; 7387be13fc3SGidon Studinski int cid; 7397be13fc3SGidon Studinski int security; 7406d1ba32cSAhmad Masri u8 *sa, *da = wil_skb_get_da(skb); 741c42da999SVladimir Kondratiev /* here looking for DA, not A1, thus Rxdesc's 'mcast' indication 742c42da999SVladimir Kondratiev * is not suitable, need to look at data 743c42da999SVladimir Kondratiev */ 7446d1ba32cSAhmad Masri int mcast = is_multicast_ether_addr(da); 7457be13fc3SGidon Studinski struct wil_net_stats *stats; 746c42da999SVladimir Kondratiev struct sk_buff *xmit_skb = NULL; 747c42da999SVladimir Kondratiev static const char * const gro_res_str[] = { 748c42da999SVladimir Kondratiev [GRO_MERGED] = "GRO_MERGED", 749c42da999SVladimir Kondratiev [GRO_MERGED_FREE] = "GRO_MERGED_FREE", 750c42da999SVladimir Kondratiev [GRO_HELD] = "GRO_HELD", 751c42da999SVladimir Kondratiev [GRO_NORMAL] = "GRO_NORMAL", 752c42da999SVladimir Kondratiev [GRO_DROP] = "GRO_DROP", 753bfabdd69SGustavo A. R. Silva [GRO_CONSUMED] = "GRO_CONSUMED", 754c42da999SVladimir Kondratiev }; 7552be7d22fSVladimir Kondratiev 7567be13fc3SGidon Studinski wil->txrx_ops.get_netif_rx_params(skb, &cid, &security); 7577be13fc3SGidon Studinski 7587be13fc3SGidon Studinski stats = &wil->sta[cid].stats; 7597be13fc3SGidon Studinski 760241804cbSVladimir Kondratiev skb_orphan(skb); 761241804cbSVladimir Kondratiev 7627be13fc3SGidon Studinski if (security && (wil->txrx_ops.rx_crypto_check(wil, skb) != 0)) { 76358527421SVladimir Kondratiev rc = GRO_DROP; 76458527421SVladimir Kondratiev dev_kfree_skb(skb); 76558527421SVladimir Kondratiev stats->rx_replay++; 76658527421SVladimir Kondratiev goto stats; 76758527421SVladimir Kondratiev } 76858527421SVladimir Kondratiev 769e15af41cSDedy Lansky /* check errors reported by HW and update statistics */ 770e15af41cSDedy Lansky if (unlikely(wil->txrx_ops.rx_error_check(wil, skb, stats))) { 771e15af41cSDedy Lansky dev_kfree_skb(skb); 772e15af41cSDedy Lansky return; 773e15af41cSDedy Lansky } 774e15af41cSDedy Lansky 7759a65064aSDedy Lansky if (wdev->iftype == NL80211_IFTYPE_STATION) { 7766d1ba32cSAhmad Masri sa = wil_skb_get_sa(skb); 7776d1ba32cSAhmad Masri if (mcast && ether_addr_equal(sa, ndev->dev_addr)) { 7789a65064aSDedy Lansky /* mcast packet looped back to us */ 7799a65064aSDedy Lansky rc = GRO_DROP; 7809a65064aSDedy Lansky dev_kfree_skb(skb); 7819a65064aSDedy Lansky goto stats; 7829a65064aSDedy Lansky } 7839a65064aSDedy Lansky } else if (wdev->iftype == NL80211_IFTYPE_AP && !vif->ap_isolate) { 784c42da999SVladimir Kondratiev if (mcast) { 785c42da999SVladimir Kondratiev /* send multicast frames both to higher layers in 786c42da999SVladimir Kondratiev * local net stack and back to the wireless medium 787c42da999SVladimir Kondratiev */ 788c42da999SVladimir Kondratiev xmit_skb = skb_copy(skb, GFP_ATOMIC); 789c42da999SVladimir Kondratiev } else { 7906d1ba32cSAhmad Masri int xmit_cid = wil_find_cid(wil, vif->mid, da); 7912be7d22fSVladimir Kondratiev 792c42da999SVladimir Kondratiev if (xmit_cid >= 0) { 793c42da999SVladimir Kondratiev /* The destination station is associated to 794c42da999SVladimir Kondratiev * this AP (in this VLAN), so send the frame 795c42da999SVladimir Kondratiev * directly to it and do not pass it to local 796c42da999SVladimir Kondratiev * net stack. 797c42da999SVladimir Kondratiev */ 798c42da999SVladimir Kondratiev xmit_skb = skb; 799c42da999SVladimir Kondratiev skb = NULL; 800c42da999SVladimir Kondratiev } 801c42da999SVladimir Kondratiev } 802c42da999SVladimir Kondratiev } 803c42da999SVladimir Kondratiev if (xmit_skb) { 804c42da999SVladimir Kondratiev /* Send to wireless media and increase priority by 256 to 805c42da999SVladimir Kondratiev * keep the received priority instead of reclassifying 806c42da999SVladimir Kondratiev * the frame (see cfg80211_classify8021d). 807c42da999SVladimir Kondratiev */ 808c42da999SVladimir Kondratiev xmit_skb->dev = ndev; 809c42da999SVladimir Kondratiev xmit_skb->priority += 256; 810c42da999SVladimir Kondratiev xmit_skb->protocol = htons(ETH_P_802_3); 811c42da999SVladimir Kondratiev skb_reset_network_header(xmit_skb); 812c42da999SVladimir Kondratiev skb_reset_mac_header(xmit_skb); 813c42da999SVladimir Kondratiev wil_dbg_txrx(wil, "Rx -> Tx %d bytes\n", len); 814c42da999SVladimir Kondratiev dev_queue_xmit(xmit_skb); 815c42da999SVladimir Kondratiev } 816c42da999SVladimir Kondratiev 817c42da999SVladimir Kondratiev if (skb) { /* deliver to local stack */ 818c42da999SVladimir Kondratiev skb->protocol = eth_type_trans(skb, ndev); 8195bd60982SLior David skb->dev = ndev; 820c42da999SVladimir Kondratiev rc = napi_gro_receive(&wil->napi_rx, skb); 821c42da999SVladimir Kondratiev wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n", 822c42da999SVladimir Kondratiev len, gro_res_str[rc]); 823c42da999SVladimir Kondratiev } 82458527421SVladimir Kondratiev stats: 825c42da999SVladimir Kondratiev /* statistics. rc set to GRO_NORMAL for AP bridging */ 826b5998e6aSVladimir Kondratiev if (unlikely(rc == GRO_DROP)) { 827b5998e6aSVladimir Kondratiev ndev->stats.rx_dropped++; 828b5998e6aSVladimir Kondratiev stats->rx_dropped++; 829b5998e6aSVladimir Kondratiev wil_dbg_txrx(wil, "Rx drop %d bytes\n", len); 830b5998e6aSVladimir Kondratiev } else { 8312be7d22fSVladimir Kondratiev ndev->stats.rx_packets++; 832c8b78b5fSVladimir Kondratiev stats->rx_packets++; 8332be7d22fSVladimir Kondratiev ndev->stats.rx_bytes += len; 834c8b78b5fSVladimir Kondratiev stats->rx_bytes += len; 835c42da999SVladimir Kondratiev if (mcast) 836c42da999SVladimir Kondratiev ndev->stats.multicast++; 837194b482bSVladimir Kondratiev } 8382be7d22fSVladimir Kondratiev } 8392be7d22fSVladimir Kondratiev 8402be7d22fSVladimir Kondratiev /** 8412be7d22fSVladimir Kondratiev * Proceed all completed skb's from Rx VRING 8422be7d22fSVladimir Kondratiev * 843e0287c4aSVladimir Kondratiev * Safe to call from NAPI poll, i.e. softirq with interrupts enabled 8442be7d22fSVladimir Kondratiev */ 845e0287c4aSVladimir Kondratiev void wil_rx_handle(struct wil6210_priv *wil, int *quota) 8462be7d22fSVladimir Kondratiev { 847e00243faSLior David struct net_device *ndev = wil->main_ndev; 848e00243faSLior David struct wireless_dev *wdev = ndev->ieee80211_ptr; 84910590c6aSGidon Studinski struct wil_ring *v = &wil->ring_rx; 8502be7d22fSVladimir Kondratiev struct sk_buff *skb; 8512be7d22fSVladimir Kondratiev 85233c477fdSVladimir Kondratiev if (unlikely(!v->va)) { 8532be7d22fSVladimir Kondratiev wil_err(wil, "Rx IRQ while Rx not yet initialized\n"); 8542be7d22fSVladimir Kondratiev return; 8552be7d22fSVladimir Kondratiev } 856af3db60aSLazar Alexei wil_dbg_txrx(wil, "rx_handle\n"); 857e0287c4aSVladimir Kondratiev while ((*quota > 0) && (NULL != (skb = wil_vring_reap_rx(wil, v)))) { 858e0287c4aSVladimir Kondratiev (*quota)--; 8592be7d22fSVladimir Kondratiev 860e00243faSLior David /* monitor is currently supported on main interface only */ 861e00243faSLior David if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 8622be7d22fSVladimir Kondratiev skb->dev = ndev; 8632be7d22fSVladimir Kondratiev skb_reset_mac_header(skb); 8642be7d22fSVladimir Kondratiev skb->ip_summed = CHECKSUM_UNNECESSARY; 8652be7d22fSVladimir Kondratiev skb->pkt_type = PACKET_OTHERHOST; 8662be7d22fSVladimir Kondratiev skb->protocol = htons(ETH_P_802_2); 867b4490f42SVladimir Kondratiev wil_netif_rx_any(skb, ndev); 8682be7d22fSVladimir Kondratiev } else { 869b4490f42SVladimir Kondratiev wil_rx_reorder(wil, skb); 8702be7d22fSVladimir Kondratiev } 8712be7d22fSVladimir Kondratiev } 8722be7d22fSVladimir Kondratiev wil_rx_refill(wil, v->size); 8732be7d22fSVladimir Kondratiev } 8742be7d22fSVladimir Kondratiev 87552a45702SLior David static void wil_rx_buf_len_init(struct wil6210_priv *wil) 87652a45702SLior David { 87752a45702SLior David wil->rx_buf_len = rx_large_buf ? 87852a45702SLior David WIL_MAX_ETH_MTU : TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 87952a45702SLior David if (mtu_max > wil->rx_buf_len) { 88052a45702SLior David /* do not allow RX buffers to be smaller than mtu_max, for 88152a45702SLior David * backward compatibility (mtu_max parameter was also used 88252a45702SLior David * to support receiving large packets) 88352a45702SLior David */ 88452a45702SLior David wil_info(wil, "Override RX buffer to mtu_max(%d)\n", mtu_max); 88552a45702SLior David wil->rx_buf_len = mtu_max; 88652a45702SLior David } 88752a45702SLior David } 88852a45702SLior David 88961e5ec04SDedy Lansky static int wil_rx_init(struct wil6210_priv *wil, uint order) 8902be7d22fSVladimir Kondratiev { 89110590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_rx; 8922be7d22fSVladimir Kondratiev int rc; 8932be7d22fSVladimir Kondratiev 894af3db60aSLazar Alexei wil_dbg_misc(wil, "rx_init\n"); 8959cf10d62SVladimir Kondratiev 8968bf6adb9SVladimir Kondratiev if (vring->va) { 8978bf6adb9SVladimir Kondratiev wil_err(wil, "Rx ring already allocated\n"); 8988bf6adb9SVladimir Kondratiev return -EINVAL; 8998bf6adb9SVladimir Kondratiev } 9008bf6adb9SVladimir Kondratiev 90152a45702SLior David wil_rx_buf_len_init(wil); 90252a45702SLior David 90361e5ec04SDedy Lansky vring->size = 1 << order; 90496c93589SGidon Studinski vring->is_rx = true; 9052be7d22fSVladimir Kondratiev rc = wil_vring_alloc(wil, vring); 9062be7d22fSVladimir Kondratiev if (rc) 9072be7d22fSVladimir Kondratiev return rc; 9082be7d22fSVladimir Kondratiev 90947e19af9SVladimir Kondratiev rc = wmi_rx_chain_add(wil, vring); 9102be7d22fSVladimir Kondratiev if (rc) 9112be7d22fSVladimir Kondratiev goto err_free; 9122be7d22fSVladimir Kondratiev 9132be7d22fSVladimir Kondratiev rc = wil_rx_refill(wil, vring->size); 9142be7d22fSVladimir Kondratiev if (rc) 9152be7d22fSVladimir Kondratiev goto err_free; 9162be7d22fSVladimir Kondratiev 9172be7d22fSVladimir Kondratiev return 0; 9182be7d22fSVladimir Kondratiev err_free: 91996c93589SGidon Studinski wil_vring_free(wil, vring); 9202be7d22fSVladimir Kondratiev 9212be7d22fSVladimir Kondratiev return rc; 9222be7d22fSVladimir Kondratiev } 9232be7d22fSVladimir Kondratiev 92496c93589SGidon Studinski static void wil_rx_fini(struct wil6210_priv *wil) 9252be7d22fSVladimir Kondratiev { 92610590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_rx; 9272be7d22fSVladimir Kondratiev 928af3db60aSLazar Alexei wil_dbg_misc(wil, "rx_fini\n"); 9299cf10d62SVladimir Kondratiev 9302acb4220SVladimir Kondratiev if (vring->va) 93196c93589SGidon Studinski wil_vring_free(wil, vring); 9322be7d22fSVladimir Kondratiev } 9332be7d22fSVladimir Kondratiev 9349202d7b6SMaya Erez static int wil_tx_desc_map(union wil_tx_desc *desc, dma_addr_t pa, 9359202d7b6SMaya Erez u32 len, int vring_index) 9369202d7b6SMaya Erez { 9379202d7b6SMaya Erez struct vring_tx_desc *d = &desc->legacy; 9389202d7b6SMaya Erez 9399202d7b6SMaya Erez wil_desc_addr_set(&d->dma.addr, pa); 9409202d7b6SMaya Erez d->dma.ip_length = 0; 9419202d7b6SMaya Erez /* 0..6: mac_length; 7:ip_version 0-IP6 1-IP4*/ 9429202d7b6SMaya Erez d->dma.b11 = 0/*14 | BIT(7)*/; 9439202d7b6SMaya Erez d->dma.error = 0; 9449202d7b6SMaya Erez d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ 9459202d7b6SMaya Erez d->dma.length = cpu_to_le16((u16)len); 9469202d7b6SMaya Erez d->dma.d0 = (vring_index << DMA_CFG_DESC_TX_0_QID_POS); 9479202d7b6SMaya Erez d->mac.d[0] = 0; 9489202d7b6SMaya Erez d->mac.d[1] = 0; 9499202d7b6SMaya Erez d->mac.d[2] = 0; 9509202d7b6SMaya Erez d->mac.ucode_cmd = 0; 9519202d7b6SMaya Erez /* translation type: 0 - bypass; 1 - 802.3; 2 - native wifi */ 9529202d7b6SMaya Erez d->mac.d[2] = BIT(MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_POS) | 9539202d7b6SMaya Erez (1 << MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_POS); 9549202d7b6SMaya Erez 9559202d7b6SMaya Erez return 0; 9569202d7b6SMaya Erez } 9579202d7b6SMaya Erez 95896c93589SGidon Studinski void wil_tx_data_init(struct wil_ring_tx_data *txdata) 959875e9439SMaya Erez { 960875e9439SMaya Erez spin_lock_bh(&txdata->lock); 961875e9439SMaya Erez txdata->dot1x_open = 0; 962875e9439SMaya Erez txdata->enabled = 0; 963875e9439SMaya Erez txdata->idle = 0; 964875e9439SMaya Erez txdata->last_idle = 0; 965875e9439SMaya Erez txdata->begin = 0; 966875e9439SMaya Erez txdata->agg_wsize = 0; 967875e9439SMaya Erez txdata->agg_timeout = 0; 968875e9439SMaya Erez txdata->agg_amsdu = 0; 969875e9439SMaya Erez txdata->addba_in_progress = false; 970e00243faSLior David txdata->mid = U8_MAX; 971875e9439SMaya Erez spin_unlock_bh(&txdata->lock); 972875e9439SMaya Erez } 973875e9439SMaya Erez 97496c93589SGidon Studinski static int wil_vring_init_tx(struct wil6210_vif *vif, int id, int size, 9752be7d22fSVladimir Kondratiev int cid, int tid) 9762be7d22fSVladimir Kondratiev { 977e00243faSLior David struct wil6210_priv *wil = vif_to_wil(vif); 9782be7d22fSVladimir Kondratiev int rc; 9792be7d22fSVladimir Kondratiev struct wmi_vring_cfg_cmd cmd = { 9802be7d22fSVladimir Kondratiev .action = cpu_to_le32(WMI_VRING_CMD_ADD), 9812be7d22fSVladimir Kondratiev .vring_cfg = { 9822be7d22fSVladimir Kondratiev .tx_sw_ring = { 9839a06bec9SVladimir Kondratiev .max_mpdu_size = 984c44690a1SVladimir Kondratiev cpu_to_le16(wil_mtu2macbuf(mtu_max)), 985b5d98e9dSVladimir Kondratiev .ring_size = cpu_to_le16(size), 9862be7d22fSVladimir Kondratiev }, 9872be7d22fSVladimir Kondratiev .ringid = id, 9882be7d22fSVladimir Kondratiev .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, 9892be7d22fSVladimir Kondratiev .mac_ctrl = 0, 9902be7d22fSVladimir Kondratiev .to_resolution = 0, 9913277213fSVladimir Kondratiev .agg_max_wsize = 0, 9922be7d22fSVladimir Kondratiev .schd_params = { 9932be7d22fSVladimir Kondratiev .priority = cpu_to_le16(0), 9942be7d22fSVladimir Kondratiev .timeslot_us = cpu_to_le16(0xfff), 9952be7d22fSVladimir Kondratiev }, 9962be7d22fSVladimir Kondratiev }, 9972be7d22fSVladimir Kondratiev }; 9982be7d22fSVladimir Kondratiev struct { 999b874ddecSLior David struct wmi_cmd_hdr wmi; 10002be7d22fSVladimir Kondratiev struct wmi_vring_cfg_done_event cmd; 1001807b0860SAlexei Avshalom Lazar } __packed reply = { 1002807b0860SAlexei Avshalom Lazar .cmd = {.status = WMI_FW_STATUS_FAILURE}, 1003807b0860SAlexei Avshalom Lazar }; 100410590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[id]; 100510590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[id]; 10062be7d22fSVladimir Kondratiev 1007bf0353a6SAhmad Masri if (cid >= WIL6210_RX_DESC_MAX_CID) { 1008bf0353a6SAhmad Masri cmd.vring_cfg.cidxtid = CIDXTID_EXTENDED_CID_TID; 1009bf0353a6SAhmad Masri cmd.vring_cfg.cid = cid; 1010bf0353a6SAhmad Masri cmd.vring_cfg.tid = tid; 1011bf0353a6SAhmad Masri } else { 1012bf0353a6SAhmad Masri cmd.vring_cfg.cidxtid = mk_cidxtid(cid, tid); 1013bf0353a6SAhmad Masri } 1014bf0353a6SAhmad Masri 1015af3db60aSLazar Alexei wil_dbg_misc(wil, "vring_init_tx: max_mpdu_size %d\n", 1016e0106adaSVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.max_mpdu_size); 10179b1ba7b2SVladimir Kondratiev lockdep_assert_held(&wil->mutex); 10189cf10d62SVladimir Kondratiev 10192be7d22fSVladimir Kondratiev if (vring->va) { 10202be7d22fSVladimir Kondratiev wil_err(wil, "Tx ring [%d] already allocated\n", id); 10212be7d22fSVladimir Kondratiev rc = -EINVAL; 10222be7d22fSVladimir Kondratiev goto out; 10232be7d22fSVladimir Kondratiev } 10242be7d22fSVladimir Kondratiev 1025875e9439SMaya Erez wil_tx_data_init(txdata); 102696c93589SGidon Studinski vring->is_rx = false; 10272be7d22fSVladimir Kondratiev vring->size = size; 10282be7d22fSVladimir Kondratiev rc = wil_vring_alloc(wil, vring); 10292be7d22fSVladimir Kondratiev if (rc) 10302be7d22fSVladimir Kondratiev goto out; 10312be7d22fSVladimir Kondratiev 103210590c6aSGidon Studinski wil->ring2cid_tid[id][0] = cid; 103310590c6aSGidon Studinski wil->ring2cid_tid[id][1] = tid; 103493ae6d49SVladimir Kondratiev 10352be7d22fSVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); 10362be7d22fSVladimir Kondratiev 1037e00243faSLior David if (!vif->privacy) 1038230d8442SVladimir Kondratiev txdata->dot1x_open = true; 1039e00243faSLior David rc = wmi_call(wil, WMI_VRING_CFG_CMDID, vif->mid, &cmd, sizeof(cmd), 10402a32c20bSAhmad Masri WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 10412a32c20bSAhmad Masri WIL_WMI_CALL_GENERAL_TO_MS); 10422be7d22fSVladimir Kondratiev if (rc) 10432be7d22fSVladimir Kondratiev goto out_free; 10442be7d22fSVladimir Kondratiev 1045b8023177SVladimir Kondratiev if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { 10462be7d22fSVladimir Kondratiev wil_err(wil, "Tx config failed, status 0x%02x\n", 10472be7d22fSVladimir Kondratiev reply.cmd.status); 1048c331997bSVladimir Kondratiev rc = -EINVAL; 10492be7d22fSVladimir Kondratiev goto out_free; 10502be7d22fSVladimir Kondratiev } 10512be7d22fSVladimir Kondratiev 1052dc90506fSMaya Erez spin_lock_bh(&txdata->lock); 1053dc90506fSMaya Erez vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); 1054e00243faSLior David txdata->mid = vif->mid; 1055097638a0SVladimir Kondratiev txdata->enabled = 1; 1056dc90506fSMaya Erez spin_unlock_bh(&txdata->lock); 1057dc90506fSMaya Erez 1058230d8442SVladimir Kondratiev if (txdata->dot1x_open && (agg_wsize >= 0)) 10593a3def8dSVladimir Kondratiev wil_addba_tx_request(wil, id, agg_wsize); 1060097638a0SVladimir Kondratiev 10612be7d22fSVladimir Kondratiev return 0; 10622be7d22fSVladimir Kondratiev out_free: 1063875e9439SMaya Erez spin_lock_bh(&txdata->lock); 1064230d8442SVladimir Kondratiev txdata->dot1x_open = false; 1065230d8442SVladimir Kondratiev txdata->enabled = 0; 1066875e9439SMaya Erez spin_unlock_bh(&txdata->lock); 106796c93589SGidon Studinski wil_vring_free(wil, vring); 1068ddf7afddSAhmad Masri wil->ring2cid_tid[id][0] = wil->max_assoc_sta; 106910590c6aSGidon Studinski wil->ring2cid_tid[id][1] = 0; 10700916d9f2SMaya Erez 10712be7d22fSVladimir Kondratiev out: 10722be7d22fSVladimir Kondratiev 10732be7d22fSVladimir Kondratiev return rc; 10742be7d22fSVladimir Kondratiev } 10752be7d22fSVladimir Kondratiev 1076b9010f10SAhmad Masri static int wil_tx_vring_modify(struct wil6210_vif *vif, int ring_id, int cid, 1077b9010f10SAhmad Masri int tid) 1078b9010f10SAhmad Masri { 1079b9010f10SAhmad Masri struct wil6210_priv *wil = vif_to_wil(vif); 1080b9010f10SAhmad Masri int rc; 1081b9010f10SAhmad Masri struct wmi_vring_cfg_cmd cmd = { 1082b9010f10SAhmad Masri .action = cpu_to_le32(WMI_VRING_CMD_MODIFY), 1083b9010f10SAhmad Masri .vring_cfg = { 1084b9010f10SAhmad Masri .tx_sw_ring = { 1085b9010f10SAhmad Masri .max_mpdu_size = 1086b9010f10SAhmad Masri cpu_to_le16(wil_mtu2macbuf(mtu_max)), 1087b9010f10SAhmad Masri .ring_size = 0, 1088b9010f10SAhmad Masri }, 1089b9010f10SAhmad Masri .ringid = ring_id, 1090b9010f10SAhmad Masri .cidxtid = mk_cidxtid(cid, tid), 1091b9010f10SAhmad Masri .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, 1092b9010f10SAhmad Masri .mac_ctrl = 0, 1093b9010f10SAhmad Masri .to_resolution = 0, 1094b9010f10SAhmad Masri .agg_max_wsize = 0, 1095b9010f10SAhmad Masri .schd_params = { 1096b9010f10SAhmad Masri .priority = cpu_to_le16(0), 1097b9010f10SAhmad Masri .timeslot_us = cpu_to_le16(0xfff), 1098b9010f10SAhmad Masri }, 1099b9010f10SAhmad Masri }, 1100b9010f10SAhmad Masri }; 1101b9010f10SAhmad Masri struct { 1102b9010f10SAhmad Masri struct wmi_cmd_hdr wmi; 1103b9010f10SAhmad Masri struct wmi_vring_cfg_done_event cmd; 1104b9010f10SAhmad Masri } __packed reply = { 1105b9010f10SAhmad Masri .cmd = {.status = WMI_FW_STATUS_FAILURE}, 1106b9010f10SAhmad Masri }; 1107b9010f10SAhmad Masri struct wil_ring *vring = &wil->ring_tx[ring_id]; 1108b9010f10SAhmad Masri struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ring_id]; 1109b9010f10SAhmad Masri 1110b9010f10SAhmad Masri wil_dbg_misc(wil, "vring_modify: ring %d cid %d tid %d\n", ring_id, 1111b9010f10SAhmad Masri cid, tid); 1112b9010f10SAhmad Masri lockdep_assert_held(&wil->mutex); 1113b9010f10SAhmad Masri 1114b9010f10SAhmad Masri if (!vring->va) { 1115b9010f10SAhmad Masri wil_err(wil, "Tx ring [%d] not allocated\n", ring_id); 1116b9010f10SAhmad Masri return -EINVAL; 1117b9010f10SAhmad Masri } 1118b9010f10SAhmad Masri 1119b9010f10SAhmad Masri if (wil->ring2cid_tid[ring_id][0] != cid || 1120b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][1] != tid) { 1121b9010f10SAhmad Masri wil_err(wil, "ring info does not match cid=%u tid=%u\n", 1122b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][0], 1123b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][1]); 1124b9010f10SAhmad Masri } 1125b9010f10SAhmad Masri 1126b9010f10SAhmad Masri cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); 1127b9010f10SAhmad Masri 1128b9010f10SAhmad Masri rc = wmi_call(wil, WMI_VRING_CFG_CMDID, vif->mid, &cmd, sizeof(cmd), 11292a32c20bSAhmad Masri WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 11302a32c20bSAhmad Masri WIL_WMI_CALL_GENERAL_TO_MS); 1131b9010f10SAhmad Masri if (rc) 1132b9010f10SAhmad Masri goto fail; 1133b9010f10SAhmad Masri 1134b9010f10SAhmad Masri if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { 1135b9010f10SAhmad Masri wil_err(wil, "Tx modify failed, status 0x%02x\n", 1136b9010f10SAhmad Masri reply.cmd.status); 1137b9010f10SAhmad Masri rc = -EINVAL; 1138b9010f10SAhmad Masri goto fail; 1139b9010f10SAhmad Masri } 1140b9010f10SAhmad Masri 1141b9010f10SAhmad Masri /* set BA aggregation window size to 0 to force a new BA with the 1142b9010f10SAhmad Masri * new AP 1143b9010f10SAhmad Masri */ 1144b9010f10SAhmad Masri txdata->agg_wsize = 0; 1145b9010f10SAhmad Masri if (txdata->dot1x_open && agg_wsize >= 0) 1146b9010f10SAhmad Masri wil_addba_tx_request(wil, ring_id, agg_wsize); 1147b9010f10SAhmad Masri 1148b9010f10SAhmad Masri return 0; 1149b9010f10SAhmad Masri fail: 1150b9010f10SAhmad Masri spin_lock_bh(&txdata->lock); 1151b9010f10SAhmad Masri txdata->dot1x_open = false; 1152b9010f10SAhmad Masri txdata->enabled = 0; 1153b9010f10SAhmad Masri spin_unlock_bh(&txdata->lock); 1154ddf7afddSAhmad Masri wil->ring2cid_tid[ring_id][0] = wil->max_assoc_sta; 1155b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][1] = 0; 1156b9010f10SAhmad Masri return rc; 1157b9010f10SAhmad Masri } 1158b9010f10SAhmad Masri 1159e00243faSLior David int wil_vring_init_bcast(struct wil6210_vif *vif, int id, int size) 116041d6b093SVladimir Kondratiev { 1161e00243faSLior David struct wil6210_priv *wil = vif_to_wil(vif); 116241d6b093SVladimir Kondratiev int rc; 116341d6b093SVladimir Kondratiev struct wmi_bcast_vring_cfg_cmd cmd = { 116441d6b093SVladimir Kondratiev .action = cpu_to_le32(WMI_VRING_CMD_ADD), 116541d6b093SVladimir Kondratiev .vring_cfg = { 116641d6b093SVladimir Kondratiev .tx_sw_ring = { 116741d6b093SVladimir Kondratiev .max_mpdu_size = 116841d6b093SVladimir Kondratiev cpu_to_le16(wil_mtu2macbuf(mtu_max)), 116941d6b093SVladimir Kondratiev .ring_size = cpu_to_le16(size), 117041d6b093SVladimir Kondratiev }, 117141d6b093SVladimir Kondratiev .ringid = id, 117241d6b093SVladimir Kondratiev .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, 117341d6b093SVladimir Kondratiev }, 117441d6b093SVladimir Kondratiev }; 117541d6b093SVladimir Kondratiev struct { 1176b874ddecSLior David struct wmi_cmd_hdr wmi; 117741d6b093SVladimir Kondratiev struct wmi_vring_cfg_done_event cmd; 1178807b0860SAlexei Avshalom Lazar } __packed reply = { 1179807b0860SAlexei Avshalom Lazar .cmd = {.status = WMI_FW_STATUS_FAILURE}, 1180807b0860SAlexei Avshalom Lazar }; 118110590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[id]; 118210590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[id]; 118341d6b093SVladimir Kondratiev 1184af3db60aSLazar Alexei wil_dbg_misc(wil, "vring_init_bcast: max_mpdu_size %d\n", 118541d6b093SVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.max_mpdu_size); 11869b1ba7b2SVladimir Kondratiev lockdep_assert_held(&wil->mutex); 118741d6b093SVladimir Kondratiev 118841d6b093SVladimir Kondratiev if (vring->va) { 118941d6b093SVladimir Kondratiev wil_err(wil, "Tx ring [%d] already allocated\n", id); 119041d6b093SVladimir Kondratiev rc = -EINVAL; 119141d6b093SVladimir Kondratiev goto out; 119241d6b093SVladimir Kondratiev } 119341d6b093SVladimir Kondratiev 1194875e9439SMaya Erez wil_tx_data_init(txdata); 119596c93589SGidon Studinski vring->is_rx = false; 119641d6b093SVladimir Kondratiev vring->size = size; 119741d6b093SVladimir Kondratiev rc = wil_vring_alloc(wil, vring); 119841d6b093SVladimir Kondratiev if (rc) 119941d6b093SVladimir Kondratiev goto out; 120041d6b093SVladimir Kondratiev 1201ddf7afddSAhmad Masri wil->ring2cid_tid[id][0] = wil->max_assoc_sta; /* CID */ 120210590c6aSGidon Studinski wil->ring2cid_tid[id][1] = 0; /* TID */ 120341d6b093SVladimir Kondratiev 120441d6b093SVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); 120541d6b093SVladimir Kondratiev 1206e00243faSLior David if (!vif->privacy) 1207230d8442SVladimir Kondratiev txdata->dot1x_open = true; 1208e00243faSLior David rc = wmi_call(wil, WMI_BCAST_VRING_CFG_CMDID, vif->mid, 1209e00243faSLior David &cmd, sizeof(cmd), 12102a32c20bSAhmad Masri WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 12112a32c20bSAhmad Masri WIL_WMI_CALL_GENERAL_TO_MS); 121241d6b093SVladimir Kondratiev if (rc) 121341d6b093SVladimir Kondratiev goto out_free; 121441d6b093SVladimir Kondratiev 121541d6b093SVladimir Kondratiev if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { 121641d6b093SVladimir Kondratiev wil_err(wil, "Tx config failed, status 0x%02x\n", 121741d6b093SVladimir Kondratiev reply.cmd.status); 121841d6b093SVladimir Kondratiev rc = -EINVAL; 121941d6b093SVladimir Kondratiev goto out_free; 122041d6b093SVladimir Kondratiev } 122141d6b093SVladimir Kondratiev 1222dc90506fSMaya Erez spin_lock_bh(&txdata->lock); 1223dc90506fSMaya Erez vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); 1224e00243faSLior David txdata->mid = vif->mid; 122541d6b093SVladimir Kondratiev txdata->enabled = 1; 1226dc90506fSMaya Erez spin_unlock_bh(&txdata->lock); 122741d6b093SVladimir Kondratiev 122841d6b093SVladimir Kondratiev return 0; 122941d6b093SVladimir Kondratiev out_free: 1230875e9439SMaya Erez spin_lock_bh(&txdata->lock); 1231230d8442SVladimir Kondratiev txdata->enabled = 0; 1232230d8442SVladimir Kondratiev txdata->dot1x_open = false; 1233875e9439SMaya Erez spin_unlock_bh(&txdata->lock); 123496c93589SGidon Studinski wil_vring_free(wil, vring); 123541d6b093SVladimir Kondratiev out: 123641d6b093SVladimir Kondratiev 123741d6b093SVladimir Kondratiev return rc; 123841d6b093SVladimir Kondratiev } 123941d6b093SVladimir Kondratiev 124010590c6aSGidon Studinski static struct wil_ring *wil_find_tx_ucast(struct wil6210_priv *wil, 1241e00243faSLior David struct wil6210_vif *vif, 12422be7d22fSVladimir Kondratiev struct sk_buff *skb) 12432be7d22fSVladimir Kondratiev { 12446d1ba32cSAhmad Masri int i, cid; 12456d1ba32cSAhmad Masri const u8 *da = wil_skb_get_da(skb); 124696c93589SGidon Studinski int min_ring_id = wil_get_min_tx_ring_id(wil); 12472be7d22fSVladimir Kondratiev 12486d1ba32cSAhmad Masri cid = wil_find_cid(wil, vif->mid, da); 12496d1ba32cSAhmad Masri 1250ddf7afddSAhmad Masri if (cid < 0 || cid >= wil->max_assoc_sta) 12513df2cd36SVladimir Kondratiev return NULL; 12523df2cd36SVladimir Kondratiev 12533df2cd36SVladimir Kondratiev /* TODO: fix for multiple TID */ 125496c93589SGidon Studinski for (i = min_ring_id; i < ARRAY_SIZE(wil->ring2cid_tid); i++) { 125510590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 125610590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 1257230d8442SVladimir Kondratiev continue; 125810590c6aSGidon Studinski if (wil->ring2cid_tid[i][0] == cid) { 125910590c6aSGidon Studinski struct wil_ring *v = &wil->ring_tx[i]; 126010590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[i]; 12618fe59627SVladimir Kondratiev 1262af3db60aSLazar Alexei wil_dbg_txrx(wil, "find_tx_ucast: (%pM) -> [%d]\n", 12636d1ba32cSAhmad Masri da, i); 1264b729aaf0SMaya Erez if (v->va && txdata->enabled) { 12652be7d22fSVladimir Kondratiev return v; 12663df2cd36SVladimir Kondratiev } else { 1267af3db60aSLazar Alexei wil_dbg_txrx(wil, 1268af3db60aSLazar Alexei "find_tx_ucast: vring[%d] not valid\n", 1269af3db60aSLazar Alexei i); 12703df2cd36SVladimir Kondratiev return NULL; 12713df2cd36SVladimir Kondratiev } 12723df2cd36SVladimir Kondratiev } 12733df2cd36SVladimir Kondratiev } 12742be7d22fSVladimir Kondratiev 12752be7d22fSVladimir Kondratiev return NULL; 12762be7d22fSVladimir Kondratiev } 12772be7d22fSVladimir Kondratiev 12789202d7b6SMaya Erez static int wil_tx_ring(struct wil6210_priv *wil, struct wil6210_vif *vif, 12799202d7b6SMaya Erez struct wil_ring *ring, struct sk_buff *skb); 128054ed90a8SVladimir Kondratiev 128110590c6aSGidon Studinski static struct wil_ring *wil_find_tx_ring_sta(struct wil6210_priv *wil, 1282e00243faSLior David struct wil6210_vif *vif, 128354ed90a8SVladimir Kondratiev struct sk_buff *skb) 128454ed90a8SVladimir Kondratiev { 128510590c6aSGidon Studinski struct wil_ring *ring; 128654ed90a8SVladimir Kondratiev int i; 128754ed90a8SVladimir Kondratiev u8 cid; 128810590c6aSGidon Studinski struct wil_ring_tx_data *txdata; 128996c93589SGidon Studinski int min_ring_id = wil_get_min_tx_ring_id(wil); 129054ed90a8SVladimir Kondratiev 129154ed90a8SVladimir Kondratiev /* In the STA mode, it is expected to have only 1 VRING 129254ed90a8SVladimir Kondratiev * for the AP we connected to. 1293230d8442SVladimir Kondratiev * find 1-st vring eligible for this skb and use it. 129454ed90a8SVladimir Kondratiev */ 129596c93589SGidon Studinski for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 129610590c6aSGidon Studinski ring = &wil->ring_tx[i]; 129710590c6aSGidon Studinski txdata = &wil->ring_tx_data[i]; 129810590c6aSGidon Studinski if (!ring->va || !txdata->enabled || txdata->mid != vif->mid) 129954ed90a8SVladimir Kondratiev continue; 130054ed90a8SVladimir Kondratiev 130110590c6aSGidon Studinski cid = wil->ring2cid_tid[i][0]; 1302ddf7afddSAhmad Masri if (cid >= wil->max_assoc_sta) /* skip BCAST */ 130341d6b093SVladimir Kondratiev continue; 130441d6b093SVladimir Kondratiev 130510590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 130610590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 1307230d8442SVladimir Kondratiev continue; 130854ed90a8SVladimir Kondratiev 130954ed90a8SVladimir Kondratiev wil_dbg_txrx(wil, "Tx -> ring %d\n", i); 131054ed90a8SVladimir Kondratiev 131110590c6aSGidon Studinski return ring; 131254ed90a8SVladimir Kondratiev } 131354ed90a8SVladimir Kondratiev 131410590c6aSGidon Studinski wil_dbg_txrx(wil, "Tx while no rings active?\n"); 131554ed90a8SVladimir Kondratiev 131654ed90a8SVladimir Kondratiev return NULL; 131754ed90a8SVladimir Kondratiev } 131854ed90a8SVladimir Kondratiev 131970812421SVladimir Kondratiev /* Use one of 2 strategies: 132070812421SVladimir Kondratiev * 132170812421SVladimir Kondratiev * 1. New (real broadcast): 132270812421SVladimir Kondratiev * use dedicated broadcast vring 132370812421SVladimir Kondratiev * 2. Old (pseudo-DMS): 132470812421SVladimir Kondratiev * Find 1-st vring and return it; 132570812421SVladimir Kondratiev * duplicate skb and send it to other active vrings; 132670812421SVladimir Kondratiev * in all cases override dest address to unicast peer's address 132770812421SVladimir Kondratiev * Use old strategy when new is not supported yet: 132870812421SVladimir Kondratiev * - for PBSS 132970812421SVladimir Kondratiev */ 133010590c6aSGidon Studinski static struct wil_ring *wil_find_tx_bcast_1(struct wil6210_priv *wil, 1331e00243faSLior David struct wil6210_vif *vif, 1332fb3cac57SVladimir Kondratiev struct sk_buff *skb) 1333fb3cac57SVladimir Kondratiev { 133410590c6aSGidon Studinski struct wil_ring *v; 133510590c6aSGidon Studinski struct wil_ring_tx_data *txdata; 133610590c6aSGidon Studinski int i = vif->bcast_ring; 1337fb3cac57SVladimir Kondratiev 133841d6b093SVladimir Kondratiev if (i < 0) 133941d6b093SVladimir Kondratiev return NULL; 134010590c6aSGidon Studinski v = &wil->ring_tx[i]; 134110590c6aSGidon Studinski txdata = &wil->ring_tx_data[i]; 1342b729aaf0SMaya Erez if (!v->va || !txdata->enabled) 1343fb3cac57SVladimir Kondratiev return NULL; 134410590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 134510590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 1346230d8442SVladimir Kondratiev return NULL; 1347fb3cac57SVladimir Kondratiev 1348fb3cac57SVladimir Kondratiev return v; 1349fb3cac57SVladimir Kondratiev } 1350fb3cac57SVladimir Kondratiev 135170812421SVladimir Kondratiev static void wil_set_da_for_vring(struct wil6210_priv *wil, 135270812421SVladimir Kondratiev struct sk_buff *skb, int vring_index) 135370812421SVladimir Kondratiev { 13546d1ba32cSAhmad Masri u8 *da = wil_skb_get_da(skb); 135510590c6aSGidon Studinski int cid = wil->ring2cid_tid[vring_index][0]; 135670812421SVladimir Kondratiev 13576d1ba32cSAhmad Masri ether_addr_copy(da, wil->sta[cid].addr); 135870812421SVladimir Kondratiev } 135970812421SVladimir Kondratiev 136010590c6aSGidon Studinski static struct wil_ring *wil_find_tx_bcast_2(struct wil6210_priv *wil, 1361e00243faSLior David struct wil6210_vif *vif, 136270812421SVladimir Kondratiev struct sk_buff *skb) 136370812421SVladimir Kondratiev { 136410590c6aSGidon Studinski struct wil_ring *v, *v2; 136570812421SVladimir Kondratiev struct sk_buff *skb2; 136670812421SVladimir Kondratiev int i; 136770812421SVladimir Kondratiev u8 cid; 13686d1ba32cSAhmad Masri const u8 *src = wil_skb_get_sa(skb); 136910590c6aSGidon Studinski struct wil_ring_tx_data *txdata, *txdata2; 137096c93589SGidon Studinski int min_ring_id = wil_get_min_tx_ring_id(wil); 137170812421SVladimir Kondratiev 137270812421SVladimir Kondratiev /* find 1-st vring eligible for data */ 137396c93589SGidon Studinski for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 137410590c6aSGidon Studinski v = &wil->ring_tx[i]; 137510590c6aSGidon Studinski txdata = &wil->ring_tx_data[i]; 1376e00243faSLior David if (!v->va || !txdata->enabled || txdata->mid != vif->mid) 137770812421SVladimir Kondratiev continue; 137870812421SVladimir Kondratiev 137910590c6aSGidon Studinski cid = wil->ring2cid_tid[i][0]; 1380ddf7afddSAhmad Masri if (cid >= wil->max_assoc_sta) /* skip BCAST */ 138170812421SVladimir Kondratiev continue; 138210590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 138310590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 138470812421SVladimir Kondratiev continue; 138570812421SVladimir Kondratiev 138670812421SVladimir Kondratiev /* don't Tx back to source when re-routing Rx->Tx at the AP */ 138770812421SVladimir Kondratiev if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) 138870812421SVladimir Kondratiev continue; 138970812421SVladimir Kondratiev 139070812421SVladimir Kondratiev goto found; 139170812421SVladimir Kondratiev } 139270812421SVladimir Kondratiev 139370812421SVladimir Kondratiev wil_dbg_txrx(wil, "Tx while no vrings active?\n"); 139470812421SVladimir Kondratiev 139570812421SVladimir Kondratiev return NULL; 139670812421SVladimir Kondratiev 139770812421SVladimir Kondratiev found: 139870812421SVladimir Kondratiev wil_dbg_txrx(wil, "BCAST -> ring %d\n", i); 139970812421SVladimir Kondratiev wil_set_da_for_vring(wil, skb, i); 140070812421SVladimir Kondratiev 140170812421SVladimir Kondratiev /* find other active vrings and duplicate skb for each */ 140270812421SVladimir Kondratiev for (i++; i < WIL6210_MAX_TX_RINGS; i++) { 140310590c6aSGidon Studinski v2 = &wil->ring_tx[i]; 140410590c6aSGidon Studinski txdata2 = &wil->ring_tx_data[i]; 1405e00243faSLior David if (!v2->va || txdata2->mid != vif->mid) 140670812421SVladimir Kondratiev continue; 140710590c6aSGidon Studinski cid = wil->ring2cid_tid[i][0]; 1408ddf7afddSAhmad Masri if (cid >= wil->max_assoc_sta) /* skip BCAST */ 140970812421SVladimir Kondratiev continue; 141010590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 141110590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 141270812421SVladimir Kondratiev continue; 141370812421SVladimir Kondratiev 141470812421SVladimir Kondratiev if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) 141570812421SVladimir Kondratiev continue; 141670812421SVladimir Kondratiev 141770812421SVladimir Kondratiev skb2 = skb_copy(skb, GFP_ATOMIC); 141870812421SVladimir Kondratiev if (skb2) { 141970812421SVladimir Kondratiev wil_dbg_txrx(wil, "BCAST DUP -> ring %d\n", i); 142070812421SVladimir Kondratiev wil_set_da_for_vring(wil, skb2, i); 14219202d7b6SMaya Erez wil_tx_ring(wil, vif, v2, skb2); 142266449740SLior David /* successful call to wil_tx_ring takes skb2 ref */ 142366449740SLior David dev_kfree_skb_any(skb2); 142470812421SVladimir Kondratiev } else { 142570812421SVladimir Kondratiev wil_err(wil, "skb_copy failed\n"); 142670812421SVladimir Kondratiev } 142770812421SVladimir Kondratiev } 142870812421SVladimir Kondratiev 142970812421SVladimir Kondratiev return v; 143070812421SVladimir Kondratiev } 143170812421SVladimir Kondratiev 1432c236658fSVladimir Kondratiev static inline 1433c236658fSVladimir Kondratiev void wil_tx_desc_set_nr_frags(struct vring_tx_desc *d, int nr_frags) 1434c236658fSVladimir Kondratiev { 14353d4bde15SVladimir Kondratiev d->mac.d[2] |= (nr_frags << MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_POS); 1436c236658fSVladimir Kondratiev } 1437c236658fSVladimir Kondratiev 14383d4bde15SVladimir Kondratiev /** 14393d4bde15SVladimir Kondratiev * Sets the descriptor @d up for csum and/or TSO offloading. The corresponding 14403d4bde15SVladimir Kondratiev * @skb is used to obtain the protocol and headers length. 14413d4bde15SVladimir Kondratiev * @tso_desc_type is a descriptor type for TSO: 0 - a header, 1 - first data, 14423d4bde15SVladimir Kondratiev * 2 - middle, 3 - last descriptor. 14433d4bde15SVladimir Kondratiev */ 14443d4bde15SVladimir Kondratiev 14453d4bde15SVladimir Kondratiev static void wil_tx_desc_offload_setup_tso(struct vring_tx_desc *d, 14463d4bde15SVladimir Kondratiev struct sk_buff *skb, 14473d4bde15SVladimir Kondratiev int tso_desc_type, bool is_ipv4, 14483d4bde15SVladimir Kondratiev int tcp_hdr_len, int skb_net_hdr_len) 1449504937d4SKirshenbaum Erez { 14503d4bde15SVladimir Kondratiev d->dma.b11 = ETH_HLEN; /* MAC header length */ 14513d4bde15SVladimir Kondratiev d->dma.b11 |= is_ipv4 << DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS; 14523d4bde15SVladimir Kondratiev 14533d4bde15SVladimir Kondratiev d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); 14543d4bde15SVladimir Kondratiev /* L4 header len: TCP header length */ 14553d4bde15SVladimir Kondratiev d->dma.d0 |= (tcp_hdr_len & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); 14563d4bde15SVladimir Kondratiev 14573d4bde15SVladimir Kondratiev /* Setup TSO: bit and desc type */ 14583d4bde15SVladimir Kondratiev d->dma.d0 |= (BIT(DMA_CFG_DESC_TX_0_TCP_SEG_EN_POS)) | 14593d4bde15SVladimir Kondratiev (tso_desc_type << DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS); 14603d4bde15SVladimir Kondratiev d->dma.d0 |= (is_ipv4 << DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_POS); 14613d4bde15SVladimir Kondratiev 14623d4bde15SVladimir Kondratiev d->dma.ip_length = skb_net_hdr_len; 14633d4bde15SVladimir Kondratiev /* Enable TCP/UDP checksum */ 14643d4bde15SVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); 14653d4bde15SVladimir Kondratiev /* Calculate pseudo-header */ 14663d4bde15SVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); 14673d4bde15SVladimir Kondratiev } 14683d4bde15SVladimir Kondratiev 14693d4bde15SVladimir Kondratiev /** 14703d4bde15SVladimir Kondratiev * Sets the descriptor @d up for csum. The corresponding 14713d4bde15SVladimir Kondratiev * @skb is used to obtain the protocol and headers length. 14723d4bde15SVladimir Kondratiev * Returns the protocol: 0 - not TCP, 1 - TCPv4, 2 - TCPv6. 14733d4bde15SVladimir Kondratiev * Note, if d==NULL, the function only returns the protocol result. 14743d4bde15SVladimir Kondratiev * 14753d4bde15SVladimir Kondratiev * It is very similar to previous wil_tx_desc_offload_setup_tso. This 14763d4bde15SVladimir Kondratiev * is "if unrolling" to optimize the critical path. 14773d4bde15SVladimir Kondratiev */ 14783d4bde15SVladimir Kondratiev 14793d4bde15SVladimir Kondratiev static int wil_tx_desc_offload_setup(struct vring_tx_desc *d, 14803d4bde15SVladimir Kondratiev struct sk_buff *skb){ 1481504937d4SKirshenbaum Erez int protocol; 1482504937d4SKirshenbaum Erez 1483504937d4SKirshenbaum Erez if (skb->ip_summed != CHECKSUM_PARTIAL) 1484504937d4SKirshenbaum Erez return 0; 1485504937d4SKirshenbaum Erez 1486df2d08eeSVladimir Kondratiev d->dma.b11 = ETH_HLEN; /* MAC header length */ 1487df2d08eeSVladimir Kondratiev 1488504937d4SKirshenbaum Erez switch (skb->protocol) { 1489504937d4SKirshenbaum Erez case cpu_to_be16(ETH_P_IP): 1490504937d4SKirshenbaum Erez protocol = ip_hdr(skb)->protocol; 1491df2d08eeSVladimir Kondratiev d->dma.b11 |= BIT(DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS); 1492504937d4SKirshenbaum Erez break; 1493504937d4SKirshenbaum Erez case cpu_to_be16(ETH_P_IPV6): 1494504937d4SKirshenbaum Erez protocol = ipv6_hdr(skb)->nexthdr; 1495504937d4SKirshenbaum Erez break; 1496504937d4SKirshenbaum Erez default: 1497504937d4SKirshenbaum Erez return -EINVAL; 1498504937d4SKirshenbaum Erez } 1499504937d4SKirshenbaum Erez 1500504937d4SKirshenbaum Erez switch (protocol) { 1501504937d4SKirshenbaum Erez case IPPROTO_TCP: 1502504937d4SKirshenbaum Erez d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); 1503504937d4SKirshenbaum Erez /* L4 header len: TCP header length */ 1504504937d4SKirshenbaum Erez d->dma.d0 |= 1505504937d4SKirshenbaum Erez (tcp_hdrlen(skb) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); 1506504937d4SKirshenbaum Erez break; 1507504937d4SKirshenbaum Erez case IPPROTO_UDP: 1508504937d4SKirshenbaum Erez /* L4 header len: UDP header length */ 1509504937d4SKirshenbaum Erez d->dma.d0 |= 1510504937d4SKirshenbaum Erez (sizeof(struct udphdr) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); 1511504937d4SKirshenbaum Erez break; 1512504937d4SKirshenbaum Erez default: 1513504937d4SKirshenbaum Erez return -EINVAL; 1514504937d4SKirshenbaum Erez } 1515504937d4SKirshenbaum Erez 1516504937d4SKirshenbaum Erez d->dma.ip_length = skb_network_header_len(skb); 1517504937d4SKirshenbaum Erez /* Enable TCP/UDP checksum */ 1518504937d4SKirshenbaum Erez d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); 1519504937d4SKirshenbaum Erez /* Calculate pseudo-header */ 1520504937d4SKirshenbaum Erez d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); 1521504937d4SKirshenbaum Erez 1522504937d4SKirshenbaum Erez return 0; 1523504937d4SKirshenbaum Erez } 1524504937d4SKirshenbaum Erez 15253d4bde15SVladimir Kondratiev static inline void wil_tx_last_desc(struct vring_tx_desc *d) 15263d4bde15SVladimir Kondratiev { 15273d4bde15SVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS) | 15283d4bde15SVladimir Kondratiev BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS) | 15293d4bde15SVladimir Kondratiev BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS); 15303d4bde15SVladimir Kondratiev } 15313d4bde15SVladimir Kondratiev 15323d4bde15SVladimir Kondratiev static inline void wil_set_tx_desc_last_tso(volatile struct vring_tx_desc *d) 15333d4bde15SVladimir Kondratiev { 15343d4bde15SVladimir Kondratiev d->dma.d0 |= wil_tso_type_lst << 15353d4bde15SVladimir Kondratiev DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS; 15363d4bde15SVladimir Kondratiev } 15373d4bde15SVladimir Kondratiev 1538e00243faSLior David static int __wil_tx_vring_tso(struct wil6210_priv *wil, struct wil6210_vif *vif, 153910590c6aSGidon Studinski struct wil_ring *vring, struct sk_buff *skb) 15403d4bde15SVladimir Kondratiev { 15413d4bde15SVladimir Kondratiev struct device *dev = wil_to_dev(wil); 15423d4bde15SVladimir Kondratiev 15433d4bde15SVladimir Kondratiev /* point to descriptors in shared memory */ 15443d4bde15SVladimir Kondratiev volatile struct vring_tx_desc *_desc = NULL, *_hdr_desc, 15453d4bde15SVladimir Kondratiev *_first_desc = NULL; 15463d4bde15SVladimir Kondratiev 15473d4bde15SVladimir Kondratiev /* pointers to shadow descriptors */ 15483d4bde15SVladimir Kondratiev struct vring_tx_desc desc_mem, hdr_desc_mem, first_desc_mem, 15493d4bde15SVladimir Kondratiev *d = &hdr_desc_mem, *hdr_desc = &hdr_desc_mem, 15503d4bde15SVladimir Kondratiev *first_desc = &first_desc_mem; 15513d4bde15SVladimir Kondratiev 15523d4bde15SVladimir Kondratiev /* pointer to shadow descriptors' context */ 15533d4bde15SVladimir Kondratiev struct wil_ctx *hdr_ctx, *first_ctx = NULL; 15543d4bde15SVladimir Kondratiev 15553d4bde15SVladimir Kondratiev int descs_used = 0; /* total number of used descriptors */ 15563d4bde15SVladimir Kondratiev int sg_desc_cnt = 0; /* number of descriptors for current mss*/ 15573d4bde15SVladimir Kondratiev 15583d4bde15SVladimir Kondratiev u32 swhead = vring->swhead; 155910590c6aSGidon Studinski int used, avail = wil_ring_avail_tx(vring); 15603d4bde15SVladimir Kondratiev int nr_frags = skb_shinfo(skb)->nr_frags; 15613d4bde15SVladimir Kondratiev int min_desc_required = nr_frags + 1; 15623d4bde15SVladimir Kondratiev int mss = skb_shinfo(skb)->gso_size; /* payload size w/o headers */ 15633d4bde15SVladimir Kondratiev int f, len, hdrlen, headlen; 156410590c6aSGidon Studinski int vring_index = vring - wil->ring_tx; 156510590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[vring_index]; 15663d4bde15SVladimir Kondratiev uint i = swhead; 15673d4bde15SVladimir Kondratiev dma_addr_t pa; 15683d4bde15SVladimir Kondratiev const skb_frag_t *frag = NULL; 15693d4bde15SVladimir Kondratiev int rem_data = mss; 15703d4bde15SVladimir Kondratiev int lenmss; 15713d4bde15SVladimir Kondratiev int hdr_compensation_need = true; 15723d4bde15SVladimir Kondratiev int desc_tso_type = wil_tso_type_first; 15733d4bde15SVladimir Kondratiev bool is_ipv4; 15743d4bde15SVladimir Kondratiev int tcp_hdr_len; 15753d4bde15SVladimir Kondratiev int skb_net_hdr_len; 15763d4bde15SVladimir Kondratiev int gso_type; 1577e3d2ed94SHamad Kadmany int rc = -EINVAL; 15783d4bde15SVladimir Kondratiev 1579af3db60aSLazar Alexei wil_dbg_txrx(wil, "tx_vring_tso: %d bytes to vring %d\n", skb->len, 1580af3db60aSLazar Alexei vring_index); 15813d4bde15SVladimir Kondratiev 15823d4bde15SVladimir Kondratiev if (unlikely(!txdata->enabled)) 15833d4bde15SVladimir Kondratiev return -EINVAL; 15843d4bde15SVladimir Kondratiev 15853d4bde15SVladimir Kondratiev /* A typical page 4K is 3-4 payloads, we assume each fragment 15863d4bde15SVladimir Kondratiev * is a full payload, that's how min_desc_required has been 15873d4bde15SVladimir Kondratiev * calculated. In real we might need more or less descriptors, 15883d4bde15SVladimir Kondratiev * this is the initial check only. 15893d4bde15SVladimir Kondratiev */ 15903d4bde15SVladimir Kondratiev if (unlikely(avail < min_desc_required)) { 15913d4bde15SVladimir Kondratiev wil_err_ratelimited(wil, 15923d4bde15SVladimir Kondratiev "TSO: Tx ring[%2d] full. No space for %d fragments\n", 15933d4bde15SVladimir Kondratiev vring_index, min_desc_required); 15943d4bde15SVladimir Kondratiev return -ENOMEM; 15953d4bde15SVladimir Kondratiev } 15963d4bde15SVladimir Kondratiev 15973d4bde15SVladimir Kondratiev /* Header Length = MAC header len + IP header len + TCP header len*/ 15983d4bde15SVladimir Kondratiev hdrlen = ETH_HLEN + 15993d4bde15SVladimir Kondratiev (int)skb_network_header_len(skb) + 16003d4bde15SVladimir Kondratiev tcp_hdrlen(skb); 16013d4bde15SVladimir Kondratiev 16023d4bde15SVladimir Kondratiev gso_type = skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV6 | SKB_GSO_TCPV4); 16033d4bde15SVladimir Kondratiev switch (gso_type) { 16043d4bde15SVladimir Kondratiev case SKB_GSO_TCPV4: 16053d4bde15SVladimir Kondratiev /* TCP v4, zero out the IP length and IPv4 checksum fields 16063d4bde15SVladimir Kondratiev * as required by the offloading doc 16073d4bde15SVladimir Kondratiev */ 16083d4bde15SVladimir Kondratiev ip_hdr(skb)->tot_len = 0; 16093d4bde15SVladimir Kondratiev ip_hdr(skb)->check = 0; 16103d4bde15SVladimir Kondratiev is_ipv4 = true; 16113d4bde15SVladimir Kondratiev break; 16123d4bde15SVladimir Kondratiev case SKB_GSO_TCPV6: 16133d4bde15SVladimir Kondratiev /* TCP v6, zero out the payload length */ 16143d4bde15SVladimir Kondratiev ipv6_hdr(skb)->payload_len = 0; 16153d4bde15SVladimir Kondratiev is_ipv4 = false; 16163d4bde15SVladimir Kondratiev break; 16173d4bde15SVladimir Kondratiev default: 16183d4bde15SVladimir Kondratiev /* other than TCPv4 or TCPv6 types are not supported for TSO. 16193d4bde15SVladimir Kondratiev * It is also illegal for both to be set simultaneously 16203d4bde15SVladimir Kondratiev */ 16213d4bde15SVladimir Kondratiev return -EINVAL; 16223d4bde15SVladimir Kondratiev } 16233d4bde15SVladimir Kondratiev 16243d4bde15SVladimir Kondratiev if (skb->ip_summed != CHECKSUM_PARTIAL) 16253d4bde15SVladimir Kondratiev return -EINVAL; 16263d4bde15SVladimir Kondratiev 16273d4bde15SVladimir Kondratiev /* tcp header length and skb network header length are fixed for all 16283d4bde15SVladimir Kondratiev * packet's descriptors - read then once here 16293d4bde15SVladimir Kondratiev */ 16303d4bde15SVladimir Kondratiev tcp_hdr_len = tcp_hdrlen(skb); 16313d4bde15SVladimir Kondratiev skb_net_hdr_len = skb_network_header_len(skb); 16323d4bde15SVladimir Kondratiev 163310590c6aSGidon Studinski _hdr_desc = &vring->va[i].tx.legacy; 16343d4bde15SVladimir Kondratiev 16353d4bde15SVladimir Kondratiev pa = dma_map_single(dev, skb->data, hdrlen, DMA_TO_DEVICE); 16363d4bde15SVladimir Kondratiev if (unlikely(dma_mapping_error(dev, pa))) { 16373d4bde15SVladimir Kondratiev wil_err(wil, "TSO: Skb head DMA map error\n"); 16383d4bde15SVladimir Kondratiev goto err_exit; 16393d4bde15SVladimir Kondratiev } 16403d4bde15SVladimir Kondratiev 16419202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)hdr_desc, pa, 16429202d7b6SMaya Erez hdrlen, vring_index); 16433d4bde15SVladimir Kondratiev wil_tx_desc_offload_setup_tso(hdr_desc, skb, wil_tso_type_hdr, is_ipv4, 16443d4bde15SVladimir Kondratiev tcp_hdr_len, skb_net_hdr_len); 16453d4bde15SVladimir Kondratiev wil_tx_last_desc(hdr_desc); 16463d4bde15SVladimir Kondratiev 16473d4bde15SVladimir Kondratiev vring->ctx[i].mapped_as = wil_mapped_as_single; 16483d4bde15SVladimir Kondratiev hdr_ctx = &vring->ctx[i]; 16493d4bde15SVladimir Kondratiev 16503d4bde15SVladimir Kondratiev descs_used++; 16513d4bde15SVladimir Kondratiev headlen = skb_headlen(skb) - hdrlen; 16523d4bde15SVladimir Kondratiev 16533d4bde15SVladimir Kondratiev for (f = headlen ? -1 : 0; f < nr_frags; f++) { 16543d4bde15SVladimir Kondratiev if (headlen) { 16553d4bde15SVladimir Kondratiev len = headlen; 16563d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "TSO: process skb head, len %u\n", 16573d4bde15SVladimir Kondratiev len); 16583d4bde15SVladimir Kondratiev } else { 16593d4bde15SVladimir Kondratiev frag = &skb_shinfo(skb)->frags[f]; 16603d4bde15SVladimir Kondratiev len = frag->size; 16613d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "TSO: frag[%d]: len %u\n", f, len); 16623d4bde15SVladimir Kondratiev } 16633d4bde15SVladimir Kondratiev 16643d4bde15SVladimir Kondratiev while (len) { 16653d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, 16663d4bde15SVladimir Kondratiev "TSO: len %d, rem_data %d, descs_used %d\n", 16673d4bde15SVladimir Kondratiev len, rem_data, descs_used); 16683d4bde15SVladimir Kondratiev 16693d4bde15SVladimir Kondratiev if (descs_used == avail) { 1670e3d2ed94SHamad Kadmany wil_err_ratelimited(wil, "TSO: ring overflow\n"); 1671e3d2ed94SHamad Kadmany rc = -ENOMEM; 1672e3d2ed94SHamad Kadmany goto mem_error; 16733d4bde15SVladimir Kondratiev } 16743d4bde15SVladimir Kondratiev 16753d4bde15SVladimir Kondratiev lenmss = min_t(int, rem_data, len); 16763d4bde15SVladimir Kondratiev i = (swhead + descs_used) % vring->size; 16773d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "TSO: lenmss %d, i %d\n", lenmss, i); 16783d4bde15SVladimir Kondratiev 16793d4bde15SVladimir Kondratiev if (!headlen) { 16803d4bde15SVladimir Kondratiev pa = skb_frag_dma_map(dev, frag, 16813d4bde15SVladimir Kondratiev frag->size - len, lenmss, 16823d4bde15SVladimir Kondratiev DMA_TO_DEVICE); 16833d4bde15SVladimir Kondratiev vring->ctx[i].mapped_as = wil_mapped_as_page; 16843d4bde15SVladimir Kondratiev } else { 16853d4bde15SVladimir Kondratiev pa = dma_map_single(dev, 16863d4bde15SVladimir Kondratiev skb->data + 16873d4bde15SVladimir Kondratiev skb_headlen(skb) - headlen, 16883d4bde15SVladimir Kondratiev lenmss, 16893d4bde15SVladimir Kondratiev DMA_TO_DEVICE); 16903d4bde15SVladimir Kondratiev vring->ctx[i].mapped_as = wil_mapped_as_single; 16913d4bde15SVladimir Kondratiev headlen -= lenmss; 16923d4bde15SVladimir Kondratiev } 16933d4bde15SVladimir Kondratiev 1694e3d2ed94SHamad Kadmany if (unlikely(dma_mapping_error(dev, pa))) { 1695e3d2ed94SHamad Kadmany wil_err(wil, "TSO: DMA map page error\n"); 1696e3d2ed94SHamad Kadmany goto mem_error; 1697e3d2ed94SHamad Kadmany } 16983d4bde15SVladimir Kondratiev 169910590c6aSGidon Studinski _desc = &vring->va[i].tx.legacy; 17003d4bde15SVladimir Kondratiev 17013d4bde15SVladimir Kondratiev if (!_first_desc) { 17023d4bde15SVladimir Kondratiev _first_desc = _desc; 17033d4bde15SVladimir Kondratiev first_ctx = &vring->ctx[i]; 17043d4bde15SVladimir Kondratiev d = first_desc; 17053d4bde15SVladimir Kondratiev } else { 17063d4bde15SVladimir Kondratiev d = &desc_mem; 17073d4bde15SVladimir Kondratiev } 17083d4bde15SVladimir Kondratiev 17099202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)d, 17109202d7b6SMaya Erez pa, lenmss, vring_index); 17113d4bde15SVladimir Kondratiev wil_tx_desc_offload_setup_tso(d, skb, desc_tso_type, 17123d4bde15SVladimir Kondratiev is_ipv4, tcp_hdr_len, 17133d4bde15SVladimir Kondratiev skb_net_hdr_len); 17143d4bde15SVladimir Kondratiev 17153d4bde15SVladimir Kondratiev /* use tso_type_first only once */ 17163d4bde15SVladimir Kondratiev desc_tso_type = wil_tso_type_mid; 17173d4bde15SVladimir Kondratiev 17183d4bde15SVladimir Kondratiev descs_used++; /* desc used so far */ 17193d4bde15SVladimir Kondratiev sg_desc_cnt++; /* desc used for this segment */ 17203d4bde15SVladimir Kondratiev len -= lenmss; 17213d4bde15SVladimir Kondratiev rem_data -= lenmss; 17223d4bde15SVladimir Kondratiev 17233d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, 17243d4bde15SVladimir Kondratiev "TSO: len %d, rem_data %d, descs_used %d, sg_desc_cnt %d,\n", 17253d4bde15SVladimir Kondratiev len, rem_data, descs_used, sg_desc_cnt); 17263d4bde15SVladimir Kondratiev 17273d4bde15SVladimir Kondratiev /* Close the segment if reached mss size or last frag*/ 17283d4bde15SVladimir Kondratiev if (rem_data == 0 || (f == nr_frags - 1 && len == 0)) { 17293d4bde15SVladimir Kondratiev if (hdr_compensation_need) { 17303d4bde15SVladimir Kondratiev /* first segment include hdr desc for 17313d4bde15SVladimir Kondratiev * release 17323d4bde15SVladimir Kondratiev */ 17333d4bde15SVladimir Kondratiev hdr_ctx->nr_frags = sg_desc_cnt; 17343d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(first_desc, 17353d4bde15SVladimir Kondratiev sg_desc_cnt + 17363d4bde15SVladimir Kondratiev 1); 17373d4bde15SVladimir Kondratiev hdr_compensation_need = false; 17383d4bde15SVladimir Kondratiev } else { 17393d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(first_desc, 17403d4bde15SVladimir Kondratiev sg_desc_cnt); 17413d4bde15SVladimir Kondratiev } 17423d4bde15SVladimir Kondratiev first_ctx->nr_frags = sg_desc_cnt - 1; 17433d4bde15SVladimir Kondratiev 17443d4bde15SVladimir Kondratiev wil_tx_last_desc(d); 17453d4bde15SVladimir Kondratiev 17463d4bde15SVladimir Kondratiev /* first descriptor may also be the last 17473d4bde15SVladimir Kondratiev * for this mss - make sure not to copy 17483d4bde15SVladimir Kondratiev * it twice 17493d4bde15SVladimir Kondratiev */ 17503d4bde15SVladimir Kondratiev if (first_desc != d) 17513d4bde15SVladimir Kondratiev *_first_desc = *first_desc; 17523d4bde15SVladimir Kondratiev 17533d4bde15SVladimir Kondratiev /*last descriptor will be copied at the end 17543d4bde15SVladimir Kondratiev * of this TS processing 17553d4bde15SVladimir Kondratiev */ 17563d4bde15SVladimir Kondratiev if (f < nr_frags - 1 || len > 0) 17573d4bde15SVladimir Kondratiev *_desc = *d; 17583d4bde15SVladimir Kondratiev 17593d4bde15SVladimir Kondratiev rem_data = mss; 17603d4bde15SVladimir Kondratiev _first_desc = NULL; 17613d4bde15SVladimir Kondratiev sg_desc_cnt = 0; 17623d4bde15SVladimir Kondratiev } else if (first_desc != d) /* update mid descriptor */ 17633d4bde15SVladimir Kondratiev *_desc = *d; 17643d4bde15SVladimir Kondratiev } 17653d4bde15SVladimir Kondratiev } 17663d4bde15SVladimir Kondratiev 17679c646597SAlexei Avshalom Lazar if (!_desc) 17689c646597SAlexei Avshalom Lazar goto mem_error; 17699c646597SAlexei Avshalom Lazar 17703d4bde15SVladimir Kondratiev /* first descriptor may also be the last. 17713d4bde15SVladimir Kondratiev * in this case d pointer is invalid 17723d4bde15SVladimir Kondratiev */ 17733d4bde15SVladimir Kondratiev if (_first_desc == _desc) 17743d4bde15SVladimir Kondratiev d = first_desc; 17753d4bde15SVladimir Kondratiev 17763d4bde15SVladimir Kondratiev /* Last data descriptor */ 17773d4bde15SVladimir Kondratiev wil_set_tx_desc_last_tso(d); 17783d4bde15SVladimir Kondratiev *_desc = *d; 17793d4bde15SVladimir Kondratiev 17803d4bde15SVladimir Kondratiev /* Fill the total number of descriptors in first desc (hdr)*/ 17813d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(hdr_desc, descs_used); 17823d4bde15SVladimir Kondratiev *_hdr_desc = *hdr_desc; 17833d4bde15SVladimir Kondratiev 17843d4bde15SVladimir Kondratiev /* hold reference to skb 17853d4bde15SVladimir Kondratiev * to prevent skb release before accounting 17863d4bde15SVladimir Kondratiev * in case of immediate "tx done" 17873d4bde15SVladimir Kondratiev */ 17883d4bde15SVladimir Kondratiev vring->ctx[i].skb = skb_get(skb); 17893d4bde15SVladimir Kondratiev 17903d4bde15SVladimir Kondratiev /* performance monitoring */ 179110590c6aSGidon Studinski used = wil_ring_used_tx(vring); 179210590c6aSGidon Studinski if (wil_val_in_range(wil->ring_idle_trsh, 17933d4bde15SVladimir Kondratiev used, used + descs_used)) { 17943d4bde15SVladimir Kondratiev txdata->idle += get_cycles() - txdata->last_idle; 17953d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", 17963d4bde15SVladimir Kondratiev vring_index, used, used + descs_used); 17973d4bde15SVladimir Kondratiev } 17983d4bde15SVladimir Kondratiev 1799eb26cff1SMaya Erez /* Make sure to advance the head only after descriptor update is done. 1800eb26cff1SMaya Erez * This will prevent a race condition where the completion thread 1801eb26cff1SMaya Erez * will see the DU bit set from previous run and will handle the 1802eb26cff1SMaya Erez * skb before it was completed. 1803eb26cff1SMaya Erez */ 1804eb26cff1SMaya Erez wmb(); 1805eb26cff1SMaya Erez 18063d4bde15SVladimir Kondratiev /* advance swhead */ 180710590c6aSGidon Studinski wil_ring_advance_head(vring, descs_used); 1808e3d2ed94SHamad Kadmany wil_dbg_txrx(wil, "TSO: Tx swhead %d -> %d\n", swhead, vring->swhead); 18093d4bde15SVladimir Kondratiev 18103d4bde15SVladimir Kondratiev /* make sure all writes to descriptors (shared memory) are done before 18113d4bde15SVladimir Kondratiev * committing them to HW 18123d4bde15SVladimir Kondratiev */ 18133d4bde15SVladimir Kondratiev wmb(); 18143d4bde15SVladimir Kondratiev 1815a24a3d6aSDedy Lansky if (wil->tx_latency) 1816a24a3d6aSDedy Lansky *(ktime_t *)&skb->cb = ktime_get(); 1817a24a3d6aSDedy Lansky else 1818a24a3d6aSDedy Lansky memset(skb->cb, 0, sizeof(ktime_t)); 1819a24a3d6aSDedy Lansky 1820b9eeb512SVladimir Kondratiev wil_w(wil, vring->hwtail, vring->swhead); 18213d4bde15SVladimir Kondratiev return 0; 18223d4bde15SVladimir Kondratiev 1823e3d2ed94SHamad Kadmany mem_error: 18243d4bde15SVladimir Kondratiev while (descs_used > 0) { 18253d4bde15SVladimir Kondratiev struct wil_ctx *ctx; 18263d4bde15SVladimir Kondratiev 1827a1526f7eSMaya Erez i = (swhead + descs_used - 1) % vring->size; 182810590c6aSGidon Studinski d = (struct vring_tx_desc *)&vring->va[i].tx.legacy; 182910590c6aSGidon Studinski _desc = &vring->va[i].tx.legacy; 18303d4bde15SVladimir Kondratiev *d = *_desc; 18313d4bde15SVladimir Kondratiev _desc->dma.status = TX_DMA_STATUS_DU; 18323d4bde15SVladimir Kondratiev ctx = &vring->ctx[i]; 18339202d7b6SMaya Erez wil_txdesc_unmap(dev, (union wil_tx_desc *)d, ctx); 18343d4bde15SVladimir Kondratiev memset(ctx, 0, sizeof(*ctx)); 18353d4bde15SVladimir Kondratiev descs_used--; 18363d4bde15SVladimir Kondratiev } 18373d4bde15SVladimir Kondratiev err_exit: 1838e3d2ed94SHamad Kadmany return rc; 18393d4bde15SVladimir Kondratiev } 18403d4bde15SVladimir Kondratiev 18419202d7b6SMaya Erez static int __wil_tx_ring(struct wil6210_priv *wil, struct wil6210_vif *vif, 18429202d7b6SMaya Erez struct wil_ring *ring, struct sk_buff *skb) 18432be7d22fSVladimir Kondratiev { 18442be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 184568ada71eSVladimir Kondratiev struct vring_tx_desc dd, *d = ⅆ 184668ada71eSVladimir Kondratiev volatile struct vring_tx_desc *_d; 18479202d7b6SMaya Erez u32 swhead = ring->swhead; 18489202d7b6SMaya Erez int avail = wil_ring_avail_tx(ring); 18492be7d22fSVladimir Kondratiev int nr_frags = skb_shinfo(skb)->nr_frags; 1850504937d4SKirshenbaum Erez uint f = 0; 18519202d7b6SMaya Erez int ring_index = ring - wil->ring_tx; 18529202d7b6SMaya Erez struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ring_index]; 18532be7d22fSVladimir Kondratiev uint i = swhead; 18542be7d22fSVladimir Kondratiev dma_addr_t pa; 18550436fd9aSVladimir Shulman int used; 18569202d7b6SMaya Erez bool mcast = (ring_index == vif->bcast_ring); 185741d6b093SVladimir Kondratiev uint len = skb_headlen(skb); 18582be7d22fSVladimir Kondratiev 185910590c6aSGidon Studinski wil_dbg_txrx(wil, "tx_ring: %d bytes to ring %d, nr_frags %d\n", 18609202d7b6SMaya Erez skb->len, ring_index, nr_frags); 18612be7d22fSVladimir Kondratiev 18625933a06dSVladimir Kondratiev if (unlikely(!txdata->enabled)) 18635933a06dSVladimir Kondratiev return -EINVAL; 18645933a06dSVladimir Kondratiev 186533c477fdSVladimir Kondratiev if (unlikely(avail < 1 + nr_frags)) { 186670801e1bSVladimir Kondratiev wil_err_ratelimited(wil, 18675b29c573SVladimir Kondratiev "Tx ring[%2d] full. No space for %d fragments\n", 18689202d7b6SMaya Erez ring_index, 1 + nr_frags); 18692be7d22fSVladimir Kondratiev return -ENOMEM; 18702be7d22fSVladimir Kondratiev } 18719202d7b6SMaya Erez _d = &ring->va[i].tx.legacy; 18722be7d22fSVladimir Kondratiev 18738fe59627SVladimir Kondratiev pa = dma_map_single(dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); 18742be7d22fSVladimir Kondratiev 18759202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] skb %d bytes 0x%p -> %pad\n", ring_index, 18765b29c573SVladimir Kondratiev skb_headlen(skb), skb->data, &pa); 18777743882dSVladimir Kondratiev wil_hex_dump_txrx("Tx ", DUMP_PREFIX_OFFSET, 16, 1, 18782be7d22fSVladimir Kondratiev skb->data, skb_headlen(skb), false); 18792be7d22fSVladimir Kondratiev 18802be7d22fSVladimir Kondratiev if (unlikely(dma_mapping_error(dev, pa))) 18812be7d22fSVladimir Kondratiev return -EINVAL; 18829202d7b6SMaya Erez ring->ctx[i].mapped_as = wil_mapped_as_single; 18832be7d22fSVladimir Kondratiev /* 1-st segment */ 18849202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)d, pa, len, 18859202d7b6SMaya Erez ring_index); 188641d6b093SVladimir Kondratiev if (unlikely(mcast)) { 188741d6b093SVladimir Kondratiev d->mac.d[0] |= BIT(MAC_CFG_DESC_TX_0_MCS_EN_POS); /* MCS 0 */ 1888230d8442SVladimir Kondratiev if (unlikely(len > WIL_BCAST_MCS0_LIMIT)) /* set MCS 1 */ 188941d6b093SVladimir Kondratiev d->mac.d[0] |= (1 << MAC_CFG_DESC_TX_0_MCS_INDEX_POS); 189041d6b093SVladimir Kondratiev } 1891504937d4SKirshenbaum Erez /* Process TCP/UDP checksum offloading */ 18923d4bde15SVladimir Kondratiev if (unlikely(wil_tx_desc_offload_setup(d, skb))) { 18935b29c573SVladimir Kondratiev wil_err(wil, "Tx[%2d] Failed to set cksum, drop packet\n", 18949202d7b6SMaya Erez ring_index); 1895504937d4SKirshenbaum Erez goto dma_error; 1896504937d4SKirshenbaum Erez } 1897504937d4SKirshenbaum Erez 18989202d7b6SMaya Erez ring->ctx[i].nr_frags = nr_frags; 18993d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(d, nr_frags + 1); 190068ada71eSVladimir Kondratiev 19012be7d22fSVladimir Kondratiev /* middle segments */ 1902504937d4SKirshenbaum Erez for (; f < nr_frags; f++) { 19032be7d22fSVladimir Kondratiev const struct skb_frag_struct *frag = 19042be7d22fSVladimir Kondratiev &skb_shinfo(skb)->frags[f]; 19052be7d22fSVladimir Kondratiev int len = skb_frag_size(frag); 19068fe59627SVladimir Kondratiev 1907e59d16c0SVladimir Kondratiev *_d = *d; 19089202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", ring_index, i); 19095b29c573SVladimir Kondratiev wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, 19105b29c573SVladimir Kondratiev (const void *)d, sizeof(*d), false); 19119202d7b6SMaya Erez i = (swhead + f + 1) % ring->size; 19129202d7b6SMaya Erez _d = &ring->va[i].tx.legacy; 19132be7d22fSVladimir Kondratiev pa = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), 19142be7d22fSVladimir Kondratiev DMA_TO_DEVICE); 1915e3d2ed94SHamad Kadmany if (unlikely(dma_mapping_error(dev, pa))) { 1916e3d2ed94SHamad Kadmany wil_err(wil, "Tx[%2d] failed to map fragment\n", 19179202d7b6SMaya Erez ring_index); 19182be7d22fSVladimir Kondratiev goto dma_error; 1919e3d2ed94SHamad Kadmany } 19209202d7b6SMaya Erez ring->ctx[i].mapped_as = wil_mapped_as_page; 19219202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)d, 19229202d7b6SMaya Erez pa, len, ring_index); 1923c236658fSVladimir Kondratiev /* no need to check return code - 1924c236658fSVladimir Kondratiev * if it succeeded for 1-st descriptor, 1925c236658fSVladimir Kondratiev * it will succeed here too 1926c236658fSVladimir Kondratiev */ 19273d4bde15SVladimir Kondratiev wil_tx_desc_offload_setup(d, skb); 19282be7d22fSVladimir Kondratiev } 19292be7d22fSVladimir Kondratiev /* for the last seg only */ 19302be7d22fSVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS); 1931668b2bbdSKirshenbaum Erez d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS); 19322be7d22fSVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS); 193368ada71eSVladimir Kondratiev *_d = *d; 19349202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", ring_index, i); 19355b29c573SVladimir Kondratiev wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, 19365b29c573SVladimir Kondratiev (const void *)d, sizeof(*d), false); 19372be7d22fSVladimir Kondratiev 19386cdadd4dSVladimir Kondratiev /* hold reference to skb 19396cdadd4dSVladimir Kondratiev * to prevent skb release before accounting 19406cdadd4dSVladimir Kondratiev * in case of immediate "tx done" 19416cdadd4dSVladimir Kondratiev */ 19429202d7b6SMaya Erez ring->ctx[i].skb = skb_get(skb); 19436cdadd4dSVladimir Kondratiev 19440436fd9aSVladimir Shulman /* performance monitoring */ 19459202d7b6SMaya Erez used = wil_ring_used_tx(ring); 194610590c6aSGidon Studinski if (wil_val_in_range(wil->ring_idle_trsh, 19470436fd9aSVladimir Shulman used, used + nr_frags + 1)) { 19487c0acf86SVladimir Kondratiev txdata->idle += get_cycles() - txdata->last_idle; 19490436fd9aSVladimir Shulman wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", 19509202d7b6SMaya Erez ring_index, used, used + nr_frags + 1); 19510436fd9aSVladimir Shulman } 19527c0acf86SVladimir Kondratiev 1953eb26cff1SMaya Erez /* Make sure to advance the head only after descriptor update is done. 1954eb26cff1SMaya Erez * This will prevent a race condition where the completion thread 1955eb26cff1SMaya Erez * will see the DU bit set from previous run and will handle the 1956eb26cff1SMaya Erez * skb before it was completed. 1957eb26cff1SMaya Erez */ 1958eb26cff1SMaya Erez wmb(); 1959eb26cff1SMaya Erez 19602be7d22fSVladimir Kondratiev /* advance swhead */ 19619202d7b6SMaya Erez wil_ring_advance_head(ring, nr_frags + 1); 19629202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] swhead %d -> %d\n", ring_index, swhead, 19639202d7b6SMaya Erez ring->swhead); 19649202d7b6SMaya Erez trace_wil6210_tx(ring_index, swhead, skb->len, nr_frags); 19653d4bde15SVladimir Kondratiev 19663d4bde15SVladimir Kondratiev /* make sure all writes to descriptors (shared memory) are done before 19673d4bde15SVladimir Kondratiev * committing them to HW 19683d4bde15SVladimir Kondratiev */ 19693d4bde15SVladimir Kondratiev wmb(); 19703d4bde15SVladimir Kondratiev 1971a24a3d6aSDedy Lansky if (wil->tx_latency) 1972a24a3d6aSDedy Lansky *(ktime_t *)&skb->cb = ktime_get(); 1973a24a3d6aSDedy Lansky else 1974a24a3d6aSDedy Lansky memset(skb->cb, 0, sizeof(ktime_t)); 1975a24a3d6aSDedy Lansky 19769202d7b6SMaya Erez wil_w(wil, ring->hwtail, ring->swhead); 19772be7d22fSVladimir Kondratiev 19782be7d22fSVladimir Kondratiev return 0; 19792be7d22fSVladimir Kondratiev dma_error: 19802be7d22fSVladimir Kondratiev /* unmap what we have mapped */ 1981c2a146f6SVladimir Kondratiev nr_frags = f + 1; /* frags mapped + one for skb head */ 1982c2a146f6SVladimir Kondratiev for (f = 0; f < nr_frags; f++) { 1983c2a146f6SVladimir Kondratiev struct wil_ctx *ctx; 19847e594444SVladimir Kondratiev 19859202d7b6SMaya Erez i = (swhead + f) % ring->size; 19869202d7b6SMaya Erez ctx = &ring->ctx[i]; 19879202d7b6SMaya Erez _d = &ring->va[i].tx.legacy; 198868ada71eSVladimir Kondratiev *d = *_d; 198968ada71eSVladimir Kondratiev _d->dma.status = TX_DMA_STATUS_DU; 19909202d7b6SMaya Erez wil->txrx_ops.tx_desc_unmap(dev, 19919202d7b6SMaya Erez (union wil_tx_desc *)d, 19929202d7b6SMaya Erez ctx); 1993f88f113aSVladimir Kondratiev 1994f88f113aSVladimir Kondratiev memset(ctx, 0, sizeof(*ctx)); 19952be7d22fSVladimir Kondratiev } 19962be7d22fSVladimir Kondratiev 19972be7d22fSVladimir Kondratiev return -EINVAL; 19982be7d22fSVladimir Kondratiev } 19992be7d22fSVladimir Kondratiev 20009202d7b6SMaya Erez static int wil_tx_ring(struct wil6210_priv *wil, struct wil6210_vif *vif, 20019202d7b6SMaya Erez struct wil_ring *ring, struct sk_buff *skb) 20025933a06dSVladimir Kondratiev { 20039202d7b6SMaya Erez int ring_index = ring - wil->ring_tx; 200410590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ring_index]; 20055933a06dSVladimir Kondratiev int rc; 20065933a06dSVladimir Kondratiev 20075933a06dSVladimir Kondratiev spin_lock(&txdata->lock); 20083d4bde15SVladimir Kondratiev 2009fe9ee51eSMaya Erez if (test_bit(wil_status_suspending, wil->status) || 2010fe9ee51eSMaya Erez test_bit(wil_status_suspended, wil->status) || 2011fe9ee51eSMaya Erez test_bit(wil_status_resuming, wil->status)) { 2012fe9ee51eSMaya Erez wil_dbg_txrx(wil, 2013fe9ee51eSMaya Erez "suspend/resume in progress. drop packet\n"); 2014fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 2015fe9ee51eSMaya Erez return -EINVAL; 2016fe9ee51eSMaya Erez } 2017fe9ee51eSMaya Erez 20189202d7b6SMaya Erez rc = (skb_is_gso(skb) ? wil->txrx_ops.tx_ring_tso : __wil_tx_ring) 20199202d7b6SMaya Erez (wil, vif, ring, skb); 20203d4bde15SVladimir Kondratiev 20215933a06dSVladimir Kondratiev spin_unlock(&txdata->lock); 20223d4bde15SVladimir Kondratiev 20235933a06dSVladimir Kondratiev return rc; 20245933a06dSVladimir Kondratiev } 20255933a06dSVladimir Kondratiev 2026f9e3033fSDedy Lansky /** 2027f9e3033fSDedy Lansky * Check status of tx vrings and stop/wake net queues if needed 20285bd60982SLior David * It will start/stop net queues of a specific VIF net_device. 2029f9e3033fSDedy Lansky * 2030f9e3033fSDedy Lansky * This function does one of two checks: 2031f9e3033fSDedy Lansky * In case check_stop is true, will check if net queues need to be stopped. If 2032f9e3033fSDedy Lansky * the conditions for stopping are met, netif_tx_stop_all_queues() is called. 2033f9e3033fSDedy Lansky * In case check_stop is false, will check if net queues need to be waked. If 2034f9e3033fSDedy Lansky * the conditions for waking are met, netif_tx_wake_all_queues() is called. 2035f9e3033fSDedy Lansky * vring is the vring which is currently being modified by either adding 2036f9e3033fSDedy Lansky * descriptors (tx) into it or removing descriptors (tx complete) from it. Can 2037f9e3033fSDedy Lansky * be null when irrelevant (e.g. connect/disconnect events). 2038f9e3033fSDedy Lansky * 2039f9e3033fSDedy Lansky * The implementation is to stop net queues if modified vring has low 2040f9e3033fSDedy Lansky * descriptor availability. Wake if all vrings are not in low descriptor 2041f9e3033fSDedy Lansky * availability and modified vring has high descriptor availability. 2042f9e3033fSDedy Lansky */ 2043f9e3033fSDedy Lansky static inline void __wil_update_net_queues(struct wil6210_priv *wil, 20445bd60982SLior David struct wil6210_vif *vif, 204510590c6aSGidon Studinski struct wil_ring *ring, 2046f9e3033fSDedy Lansky bool check_stop) 2047f9e3033fSDedy Lansky { 2048f9e3033fSDedy Lansky int i; 2049df2b5388SMaya Erez int min_ring_id = wil_get_min_tx_ring_id(wil); 2050f9e3033fSDedy Lansky 20515bd60982SLior David if (unlikely(!vif)) 20525bd60982SLior David return; 2053f9e3033fSDedy Lansky 205410590c6aSGidon Studinski if (ring) 20555bd60982SLior David wil_dbg_txrx(wil, "vring %d, mid %d, check_stop=%d, stopped=%d", 205610590c6aSGidon Studinski (int)(ring - wil->ring_tx), vif->mid, check_stop, 20575bd60982SLior David vif->net_queue_stopped); 20585bd60982SLior David else 20595bd60982SLior David wil_dbg_txrx(wil, "check_stop=%d, mid=%d, stopped=%d", 20605bd60982SLior David check_stop, vif->mid, vif->net_queue_stopped); 20615bd60982SLior David 20620439a5e0SDedy Lansky if (ring && drop_if_ring_full) 20630439a5e0SDedy Lansky /* no need to stop/wake net queues */ 20640439a5e0SDedy Lansky return; 20650439a5e0SDedy Lansky 20665bd60982SLior David if (check_stop == vif->net_queue_stopped) 2067f9e3033fSDedy Lansky /* net queues already in desired state */ 2068f9e3033fSDedy Lansky return; 2069f9e3033fSDedy Lansky 2070f9e3033fSDedy Lansky if (check_stop) { 207110590c6aSGidon Studinski if (!ring || unlikely(wil_ring_avail_low(ring))) { 2072f9e3033fSDedy Lansky /* not enough room in the vring */ 20735bd60982SLior David netif_tx_stop_all_queues(vif_to_ndev(vif)); 20745bd60982SLior David vif->net_queue_stopped = true; 2075f9e3033fSDedy Lansky wil_dbg_txrx(wil, "netif_tx_stop called\n"); 2076f9e3033fSDedy Lansky } 2077f9e3033fSDedy Lansky return; 2078f9e3033fSDedy Lansky } 2079f9e3033fSDedy Lansky 2080fe9ee51eSMaya Erez /* Do not wake the queues in suspend flow */ 2081fe9ee51eSMaya Erez if (test_bit(wil_status_suspending, wil->status) || 2082fe9ee51eSMaya Erez test_bit(wil_status_suspended, wil->status)) 2083fe9ee51eSMaya Erez return; 2084fe9ee51eSMaya Erez 2085f9e3033fSDedy Lansky /* check wake */ 2086df2b5388SMaya Erez for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 208710590c6aSGidon Studinski struct wil_ring *cur_ring = &wil->ring_tx[i]; 208810590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[i]; 2089f9e3033fSDedy Lansky 209010590c6aSGidon Studinski if (txdata->mid != vif->mid || !cur_ring->va || 209110590c6aSGidon Studinski !txdata->enabled || cur_ring == ring) 2092f9e3033fSDedy Lansky continue; 2093f9e3033fSDedy Lansky 209410590c6aSGidon Studinski if (wil_ring_avail_low(cur_ring)) { 209510590c6aSGidon Studinski wil_dbg_txrx(wil, "ring %d full, can't wake\n", 209610590c6aSGidon Studinski (int)(cur_ring - wil->ring_tx)); 2097f9e3033fSDedy Lansky return; 2098f9e3033fSDedy Lansky } 2099f9e3033fSDedy Lansky } 2100f9e3033fSDedy Lansky 210110590c6aSGidon Studinski if (!ring || wil_ring_avail_high(ring)) { 210210590c6aSGidon Studinski /* enough room in the ring */ 2103f9e3033fSDedy Lansky wil_dbg_txrx(wil, "calling netif_tx_wake\n"); 21045bd60982SLior David netif_tx_wake_all_queues(vif_to_ndev(vif)); 21055bd60982SLior David vif->net_queue_stopped = false; 2106f9e3033fSDedy Lansky } 2107f9e3033fSDedy Lansky } 2108f9e3033fSDedy Lansky 21095bd60982SLior David void wil_update_net_queues(struct wil6210_priv *wil, struct wil6210_vif *vif, 211010590c6aSGidon Studinski struct wil_ring *ring, bool check_stop) 2111f9e3033fSDedy Lansky { 2112f9e3033fSDedy Lansky spin_lock(&wil->net_queue_lock); 211310590c6aSGidon Studinski __wil_update_net_queues(wil, vif, ring, check_stop); 2114f9e3033fSDedy Lansky spin_unlock(&wil->net_queue_lock); 2115f9e3033fSDedy Lansky } 2116f9e3033fSDedy Lansky 21175bd60982SLior David void wil_update_net_queues_bh(struct wil6210_priv *wil, struct wil6210_vif *vif, 211810590c6aSGidon Studinski struct wil_ring *ring, bool check_stop) 2119f9e3033fSDedy Lansky { 2120f9e3033fSDedy Lansky spin_lock_bh(&wil->net_queue_lock); 212110590c6aSGidon Studinski __wil_update_net_queues(wil, vif, ring, check_stop); 2122f9e3033fSDedy Lansky spin_unlock_bh(&wil->net_queue_lock); 2123f9e3033fSDedy Lansky } 2124f9e3033fSDedy Lansky 21252be7d22fSVladimir Kondratiev netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) 21262be7d22fSVladimir Kondratiev { 2127e00243faSLior David struct wil6210_vif *vif = ndev_to_vif(ndev); 2128e00243faSLior David struct wil6210_priv *wil = vif_to_wil(vif); 21296d1ba32cSAhmad Masri const u8 *da = wil_skb_get_da(skb); 21306d1ba32cSAhmad Masri bool bcast = is_multicast_ether_addr(da); 21319202d7b6SMaya Erez struct wil_ring *ring; 2132aa27deaaSVladimir Kondratiev static bool pr_once_fw; 21332be7d22fSVladimir Kondratiev int rc; 21342be7d22fSVladimir Kondratiev 2135af3db60aSLazar Alexei wil_dbg_txrx(wil, "start_xmit\n"); 213633c477fdSVladimir Kondratiev if (unlikely(!test_bit(wil_status_fwready, wil->status))) { 2137aa27deaaSVladimir Kondratiev if (!pr_once_fw) { 21382be7d22fSVladimir Kondratiev wil_err(wil, "FW not ready\n"); 2139aa27deaaSVladimir Kondratiev pr_once_fw = true; 2140aa27deaaSVladimir Kondratiev } 21412be7d22fSVladimir Kondratiev goto drop; 21422be7d22fSVladimir Kondratiev } 21435bd60982SLior David if (unlikely(!test_bit(wil_vif_fwconnected, vif->status))) { 21445bd60982SLior David wil_dbg_ratelimited(wil, 21455bd60982SLior David "VIF not connected, packet dropped\n"); 21462be7d22fSVladimir Kondratiev goto drop; 21472be7d22fSVladimir Kondratiev } 2148e00243faSLior David if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_MONITOR)) { 21492be7d22fSVladimir Kondratiev wil_err(wil, "Xmit in monitor mode not supported\n"); 21502be7d22fSVladimir Kondratiev goto drop; 21512be7d22fSVladimir Kondratiev } 2152aa27deaaSVladimir Kondratiev pr_once_fw = false; 2153d58db4e4SVladimir Kondratiev 21542be7d22fSVladimir Kondratiev /* find vring */ 2155e00243faSLior David if (vif->wdev.iftype == NL80211_IFTYPE_STATION && !vif->pbss) { 2156a895cb8bSLior David /* in STA mode (ESS), all to same VRING (to AP) */ 21579202d7b6SMaya Erez ring = wil_find_tx_ring_sta(wil, vif, skb); 2158a895cb8bSLior David } else if (bcast) { 2159e00243faSLior David if (vif->pbss) 2160a895cb8bSLior David /* in pbss, no bcast VRING - duplicate skb in 2161a895cb8bSLior David * all stations VRINGs 2162a895cb8bSLior David */ 21639202d7b6SMaya Erez ring = wil_find_tx_bcast_2(wil, vif, skb); 2164e00243faSLior David else if (vif->wdev.iftype == NL80211_IFTYPE_AP) 2165a895cb8bSLior David /* AP has a dedicated bcast VRING */ 21669202d7b6SMaya Erez ring = wil_find_tx_bcast_1(wil, vif, skb); 2167a895cb8bSLior David else 2168a895cb8bSLior David /* unexpected combination, fallback to duplicating 2169a895cb8bSLior David * the skb in all stations VRINGs 2170a895cb8bSLior David */ 21719202d7b6SMaya Erez ring = wil_find_tx_bcast_2(wil, vif, skb); 2172a895cb8bSLior David } else { 2173a895cb8bSLior David /* unicast, find specific VRING by dest. address */ 21749202d7b6SMaya Erez ring = wil_find_tx_ucast(wil, vif, skb); 217554ed90a8SVladimir Kondratiev } 21769202d7b6SMaya Erez if (unlikely(!ring)) { 21776d1ba32cSAhmad Masri wil_dbg_txrx(wil, "No Tx RING found for %pM\n", da); 21782be7d22fSVladimir Kondratiev goto drop; 21792be7d22fSVladimir Kondratiev } 21802be7d22fSVladimir Kondratiev /* set up vring entry */ 21819202d7b6SMaya Erez rc = wil_tx_ring(wil, vif, ring, skb); 2182d58db4e4SVladimir Kondratiev 21832be7d22fSVladimir Kondratiev switch (rc) { 21842be7d22fSVladimir Kondratiev case 0: 2185f9e3033fSDedy Lansky /* shall we stop net queues? */ 21869202d7b6SMaya Erez wil_update_net_queues_bh(wil, vif, ring, true); 2187795ce734SVladimir Kondratiev /* statistics will be updated on the tx_complete */ 21882be7d22fSVladimir Kondratiev dev_kfree_skb_any(skb); 21892be7d22fSVladimir Kondratiev return NETDEV_TX_OK; 21902be7d22fSVladimir Kondratiev case -ENOMEM: 21910439a5e0SDedy Lansky if (drop_if_ring_full) 21920439a5e0SDedy Lansky goto drop; 21932be7d22fSVladimir Kondratiev return NETDEV_TX_BUSY; 21942be7d22fSVladimir Kondratiev default: 2195afda8bb5SVladimir Kondratiev break; /* goto drop; */ 21962be7d22fSVladimir Kondratiev } 21972be7d22fSVladimir Kondratiev drop: 21982be7d22fSVladimir Kondratiev ndev->stats.tx_dropped++; 21992be7d22fSVladimir Kondratiev dev_kfree_skb_any(skb); 22002be7d22fSVladimir Kondratiev 22012be7d22fSVladimir Kondratiev return NET_XMIT_DROP; 22022be7d22fSVladimir Kondratiev } 22032be7d22fSVladimir Kondratiev 2204a24a3d6aSDedy Lansky void wil_tx_latency_calc(struct wil6210_priv *wil, struct sk_buff *skb, 2205a24a3d6aSDedy Lansky struct wil_sta_info *sta) 2206a24a3d6aSDedy Lansky { 2207a24a3d6aSDedy Lansky int skb_time_us; 2208a24a3d6aSDedy Lansky int bin; 2209a24a3d6aSDedy Lansky 2210a24a3d6aSDedy Lansky if (!wil->tx_latency) 2211a24a3d6aSDedy Lansky return; 2212a24a3d6aSDedy Lansky 2213a24a3d6aSDedy Lansky if (ktime_to_ms(*(ktime_t *)&skb->cb) == 0) 2214a24a3d6aSDedy Lansky return; 2215a24a3d6aSDedy Lansky 2216a24a3d6aSDedy Lansky skb_time_us = ktime_us_delta(ktime_get(), *(ktime_t *)&skb->cb); 2217a24a3d6aSDedy Lansky bin = skb_time_us / wil->tx_latency_res; 2218a24a3d6aSDedy Lansky bin = min_t(int, bin, WIL_NUM_LATENCY_BINS - 1); 2219a24a3d6aSDedy Lansky 2220a24a3d6aSDedy Lansky wil_dbg_txrx(wil, "skb time %dus => bin %d\n", skb_time_us, bin); 2221a24a3d6aSDedy Lansky sta->tx_latency_bins[bin]++; 2222a24a3d6aSDedy Lansky sta->stats.tx_latency_total_us += skb_time_us; 2223a24a3d6aSDedy Lansky if (skb_time_us < sta->stats.tx_latency_min_us) 2224a24a3d6aSDedy Lansky sta->stats.tx_latency_min_us = skb_time_us; 2225a24a3d6aSDedy Lansky if (skb_time_us > sta->stats.tx_latency_max_us) 2226a24a3d6aSDedy Lansky sta->stats.tx_latency_max_us = skb_time_us; 2227a24a3d6aSDedy Lansky } 2228a24a3d6aSDedy Lansky 22292be7d22fSVladimir Kondratiev /** 22302be7d22fSVladimir Kondratiev * Clean up transmitted skb's from the Tx VRING 22312be7d22fSVladimir Kondratiev * 2232e0287c4aSVladimir Kondratiev * Return number of descriptors cleared 2233e0287c4aSVladimir Kondratiev * 22342be7d22fSVladimir Kondratiev * Safe to call from IRQ 22352be7d22fSVladimir Kondratiev */ 22365bd60982SLior David int wil_tx_complete(struct wil6210_vif *vif, int ringid) 22372be7d22fSVladimir Kondratiev { 22385bd60982SLior David struct wil6210_priv *wil = vif_to_wil(vif); 22395bd60982SLior David struct net_device *ndev = vif_to_ndev(vif); 22402be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 224110590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[ringid]; 224210590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ringid]; 2243e0287c4aSVladimir Kondratiev int done = 0; 224410590c6aSGidon Studinski int cid = wil->ring2cid_tid[ringid][0]; 224541d6b093SVladimir Kondratiev struct wil_net_stats *stats = NULL; 2246c236658fSVladimir Kondratiev volatile struct vring_tx_desc *_d; 22470436fd9aSVladimir Shulman int used_before_complete; 22480436fd9aSVladimir Shulman int used_new; 22492be7d22fSVladimir Kondratiev 225033c477fdSVladimir Kondratiev if (unlikely(!vring->va)) { 22512be7d22fSVladimir Kondratiev wil_err(wil, "Tx irq[%d]: vring not initialized\n", ringid); 2252e0287c4aSVladimir Kondratiev return 0; 22532be7d22fSVladimir Kondratiev } 22542be7d22fSVladimir Kondratiev 225533c477fdSVladimir Kondratiev if (unlikely(!txdata->enabled)) { 2256097638a0SVladimir Kondratiev wil_info(wil, "Tx irq[%d]: vring disabled\n", ringid); 2257097638a0SVladimir Kondratiev return 0; 2258097638a0SVladimir Kondratiev } 2259097638a0SVladimir Kondratiev 2260af3db60aSLazar Alexei wil_dbg_txrx(wil, "tx_complete: (%d)\n", ringid); 22612be7d22fSVladimir Kondratiev 226210590c6aSGidon Studinski used_before_complete = wil_ring_used_tx(vring); 22630436fd9aSVladimir Shulman 2264ddf7afddSAhmad Masri if (cid < wil->max_assoc_sta) 226541d6b093SVladimir Kondratiev stats = &wil->sta[cid].stats; 226641d6b093SVladimir Kondratiev 226710590c6aSGidon Studinski while (!wil_ring_is_empty(vring)) { 2268c236658fSVladimir Kondratiev int new_swtail; 2269c236658fSVladimir Kondratiev struct wil_ctx *ctx = &vring->ctx[vring->swtail]; 2270c236658fSVladimir Kondratiev /** 2271c236658fSVladimir Kondratiev * For the fragmented skb, HW will set DU bit only for the 22723d4bde15SVladimir Kondratiev * last fragment. look for it. 22733d4bde15SVladimir Kondratiev * In TSO the first DU will include hdr desc 2274c236658fSVladimir Kondratiev */ 2275c236658fSVladimir Kondratiev int lf = (vring->swtail + ctx->nr_frags) % vring->size; 2276c236658fSVladimir Kondratiev /* TODO: check we are not past head */ 2277c236658fSVladimir Kondratiev 227810590c6aSGidon Studinski _d = &vring->va[lf].tx.legacy; 227933c477fdSVladimir Kondratiev if (unlikely(!(_d->dma.status & TX_DMA_STATUS_DU))) 2280c236658fSVladimir Kondratiev break; 2281c236658fSVladimir Kondratiev 2282c236658fSVladimir Kondratiev new_swtail = (lf + 1) % vring->size; 2283c236658fSVladimir Kondratiev while (vring->swtail != new_swtail) { 22844de41befSVladimir Kondratiev struct vring_tx_desc dd, *d = ⅆ 22857e594444SVladimir Kondratiev u16 dmalen; 228676dfa4b7SVladimir Kondratiev struct sk_buff *skb; 228776dfa4b7SVladimir Kondratiev 228876dfa4b7SVladimir Kondratiev ctx = &vring->ctx[vring->swtail]; 228976dfa4b7SVladimir Kondratiev skb = ctx->skb; 229010590c6aSGidon Studinski _d = &vring->va[vring->swtail].tx.legacy; 22914de41befSVladimir Kondratiev 229268ada71eSVladimir Kondratiev *d = *_d; 22934de41befSVladimir Kondratiev 22947e594444SVladimir Kondratiev dmalen = le16_to_cpu(d->dma.length); 229598658095SVladimir Kondratiev trace_wil6210_tx_done(ringid, vring->swtail, dmalen, 229698658095SVladimir Kondratiev d->dma.error); 22977743882dSVladimir Kondratiev wil_dbg_txrx(wil, 22985b29c573SVladimir Kondratiev "TxC[%2d][%3d] : %d bytes, status 0x%02x err 0x%02x\n", 22995b29c573SVladimir Kondratiev ringid, vring->swtail, dmalen, 23005b29c573SVladimir Kondratiev d->dma.status, d->dma.error); 23015b29c573SVladimir Kondratiev wil_hex_dump_txrx("TxCD ", DUMP_PREFIX_NONE, 32, 4, 23022be7d22fSVladimir Kondratiev (const void *)d, sizeof(*d), false); 23032be7d22fSVladimir Kondratiev 23049202d7b6SMaya Erez wil->txrx_ops.tx_desc_unmap(dev, 23059202d7b6SMaya Erez (union wil_tx_desc *)d, 23069202d7b6SMaya Erez ctx); 2307f88f113aSVladimir Kondratiev 23082be7d22fSVladimir Kondratiev if (skb) { 230933c477fdSVladimir Kondratiev if (likely(d->dma.error == 0)) { 2310795ce734SVladimir Kondratiev ndev->stats.tx_packets++; 2311795ce734SVladimir Kondratiev ndev->stats.tx_bytes += skb->len; 231241d6b093SVladimir Kondratiev if (stats) { 231341d6b093SVladimir Kondratiev stats->tx_packets++; 2314c8b78b5fSVladimir Kondratiev stats->tx_bytes += skb->len; 2315a24a3d6aSDedy Lansky 2316a24a3d6aSDedy Lansky wil_tx_latency_calc(wil, skb, 2317a24a3d6aSDedy Lansky &wil->sta[cid]); 231841d6b093SVladimir Kondratiev } 2319795ce734SVladimir Kondratiev } else { 2320795ce734SVladimir Kondratiev ndev->stats.tx_errors++; 232141d6b093SVladimir Kondratiev if (stats) 2322c8b78b5fSVladimir Kondratiev stats->tx_errors++; 2323795ce734SVladimir Kondratiev } 2324713c8a29SVladimir Kondratiev wil_consume_skb(skb, d->dma.error == 0); 23252be7d22fSVladimir Kondratiev } 2326f88f113aSVladimir Kondratiev memset(ctx, 0, sizeof(*ctx)); 2327eb26cff1SMaya Erez /* Make sure the ctx is zeroed before updating the tail 232810590c6aSGidon Studinski * to prevent a case where wil_tx_ring will see 2329eb26cff1SMaya Erez * this descriptor as used and handle it before ctx zero 2330eb26cff1SMaya Erez * is completed. 2331eb26cff1SMaya Erez */ 2332eb26cff1SMaya Erez wmb(); 2333c236658fSVladimir Kondratiev /* There is no need to touch HW descriptor: 233403269c65SVladimir Kondratiev * - ststus bit TX_DMA_STATUS_DU is set by design, 233503269c65SVladimir Kondratiev * so hardware will not try to process this desc., 233603269c65SVladimir Kondratiev * - rest of descriptor will be initialized on Tx. 233703269c65SVladimir Kondratiev */ 233810590c6aSGidon Studinski vring->swtail = wil_ring_next_tail(vring); 2339e0287c4aSVladimir Kondratiev done++; 23402be7d22fSVladimir Kondratiev } 2341c236658fSVladimir Kondratiev } 234267c3e1b4SVladimir Kondratiev 23430436fd9aSVladimir Shulman /* performance monitoring */ 234410590c6aSGidon Studinski used_new = wil_ring_used_tx(vring); 234510590c6aSGidon Studinski if (wil_val_in_range(wil->ring_idle_trsh, 23460436fd9aSVladimir Shulman used_new, used_before_complete)) { 23470436fd9aSVladimir Shulman wil_dbg_txrx(wil, "Ring[%2d] idle %d -> %d\n", 23480436fd9aSVladimir Shulman ringid, used_before_complete, used_new); 23497c0acf86SVladimir Kondratiev txdata->last_idle = get_cycles(); 23507c0acf86SVladimir Kondratiev } 235167c3e1b4SVladimir Kondratiev 2352f9e3033fSDedy Lansky /* shall we wake net queues? */ 2353f9e3033fSDedy Lansky if (done) 23545bd60982SLior David wil_update_net_queues(wil, vif, vring, false); 2355e0287c4aSVladimir Kondratiev 2356e0287c4aSVladimir Kondratiev return done; 23572be7d22fSVladimir Kondratiev } 235896c93589SGidon Studinski 235996c93589SGidon Studinski static inline int wil_tx_init(struct wil6210_priv *wil) 236096c93589SGidon Studinski { 236196c93589SGidon Studinski return 0; 236296c93589SGidon Studinski } 236396c93589SGidon Studinski 236496c93589SGidon Studinski static inline void wil_tx_fini(struct wil6210_priv *wil) {} 236596c93589SGidon Studinski 23667be13fc3SGidon Studinski static void wil_get_reorder_params(struct wil6210_priv *wil, 23677be13fc3SGidon Studinski struct sk_buff *skb, int *tid, int *cid, 23681bd82ee0SDedy Lansky int *mid, u16 *seq, int *mcast, int *retry) 23697be13fc3SGidon Studinski { 23707be13fc3SGidon Studinski struct vring_rx_desc *d = wil_skb_rxdesc(skb); 23717be13fc3SGidon Studinski 23727be13fc3SGidon Studinski *tid = wil_rxdesc_tid(d); 2373bf0353a6SAhmad Masri *cid = wil_skb_get_cid(skb); 23747be13fc3SGidon Studinski *mid = wil_rxdesc_mid(d); 23757be13fc3SGidon Studinski *seq = wil_rxdesc_seq(d); 23767be13fc3SGidon Studinski *mcast = wil_rxdesc_mcast(d); 23771bd82ee0SDedy Lansky *retry = wil_rxdesc_retry(d); 23787be13fc3SGidon Studinski } 23797be13fc3SGidon Studinski 238096c93589SGidon Studinski void wil_init_txrx_ops_legacy_dma(struct wil6210_priv *wil) 238196c93589SGidon Studinski { 238296c93589SGidon Studinski wil->txrx_ops.configure_interrupt_moderation = 238396c93589SGidon Studinski wil_configure_interrupt_moderation; 238496c93589SGidon Studinski /* TX ops */ 23859202d7b6SMaya Erez wil->txrx_ops.tx_desc_map = wil_tx_desc_map; 23869202d7b6SMaya Erez wil->txrx_ops.tx_desc_unmap = wil_txdesc_unmap; 23879202d7b6SMaya Erez wil->txrx_ops.tx_ring_tso = __wil_tx_vring_tso; 238896c93589SGidon Studinski wil->txrx_ops.ring_init_tx = wil_vring_init_tx; 238996c93589SGidon Studinski wil->txrx_ops.ring_fini_tx = wil_vring_free; 239096c93589SGidon Studinski wil->txrx_ops.ring_init_bcast = wil_vring_init_bcast; 239196c93589SGidon Studinski wil->txrx_ops.tx_init = wil_tx_init; 239296c93589SGidon Studinski wil->txrx_ops.tx_fini = wil_tx_fini; 2393b9010f10SAhmad Masri wil->txrx_ops.tx_ring_modify = wil_tx_vring_modify; 239496c93589SGidon Studinski /* RX ops */ 239596c93589SGidon Studinski wil->txrx_ops.rx_init = wil_rx_init; 23967be13fc3SGidon Studinski wil->txrx_ops.wmi_addba_rx_resp = wmi_addba_rx_resp; 23977be13fc3SGidon Studinski wil->txrx_ops.get_reorder_params = wil_get_reorder_params; 23987be13fc3SGidon Studinski wil->txrx_ops.get_netif_rx_params = 23997be13fc3SGidon Studinski wil_get_netif_rx_params; 24007be13fc3SGidon Studinski wil->txrx_ops.rx_crypto_check = wil_rx_crypto_check; 2401e15af41cSDedy Lansky wil->txrx_ops.rx_error_check = wil_rx_error_check; 24027be13fc3SGidon Studinski wil->txrx_ops.is_rx_idle = wil_is_rx_idle; 240396c93589SGidon Studinski wil->txrx_ops.rx_fini = wil_rx_fini; 240496c93589SGidon Studinski } 2405