12be7d22fSVladimir Kondratiev /* 2af3db60aSLazar Alexei * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. 3e00243faSLior David * Copyright (c) 2018, 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 332be7d22fSVladimir Kondratiev static bool rtap_include_phy_info; 3478484c44SMaya Erez module_param(rtap_include_phy_info, bool, 0444); 352be7d22fSVladimir Kondratiev MODULE_PARM_DESC(rtap_include_phy_info, 362be7d22fSVladimir Kondratiev " Include PHY info in the radiotap header, default - no"); 372be7d22fSVladimir Kondratiev 38c406ea7cSVladimir Kondratiev bool rx_align_2; 3978484c44SMaya Erez module_param(rx_align_2, bool, 0444); 40c406ea7cSVladimir Kondratiev MODULE_PARM_DESC(rx_align_2, " align Rx buffers on 4*n+2, default - no"); 41c406ea7cSVladimir Kondratiev 4252a45702SLior David bool rx_large_buf; 4352a45702SLior David module_param(rx_large_buf, bool, 0444); 4452a45702SLior David MODULE_PARM_DESC(rx_large_buf, " allocate 8KB RX buffers, default - no"); 4552a45702SLior David 46c406ea7cSVladimir Kondratiev static inline uint wil_rx_snaplen(void) 47c406ea7cSVladimir Kondratiev { 48c406ea7cSVladimir Kondratiev return rx_align_2 ? 6 : 0; 49c406ea7cSVladimir Kondratiev } 50c406ea7cSVladimir Kondratiev 5110590c6aSGidon Studinski /* wil_ring_wmark_low - low watermark for available descriptor space */ 5210590c6aSGidon Studinski static inline int wil_ring_wmark_low(struct wil_ring *ring) 532be7d22fSVladimir Kondratiev { 5410590c6aSGidon Studinski return ring->size / 8; 552be7d22fSVladimir Kondratiev } 562be7d22fSVladimir Kondratiev 5710590c6aSGidon Studinski /* wil_ring_wmark_high - high watermark for available descriptor space */ 5810590c6aSGidon Studinski static inline int wil_ring_wmark_high(struct wil_ring *ring) 592be7d22fSVladimir Kondratiev { 6010590c6aSGidon Studinski return ring->size / 4; 615bb6423eSVladimir Kondratiev } 625bb6423eSVladimir Kondratiev 63f9e3033fSDedy Lansky /* returns true if num avail descriptors is lower than wmark_low */ 6410590c6aSGidon Studinski static inline int wil_ring_avail_low(struct wil_ring *ring) 65f9e3033fSDedy Lansky { 6610590c6aSGidon Studinski return wil_ring_avail_tx(ring) < wil_ring_wmark_low(ring); 67f9e3033fSDedy Lansky } 68f9e3033fSDedy Lansky 69f9e3033fSDedy Lansky /* returns true if num avail descriptors is higher than wmark_high */ 7010590c6aSGidon Studinski static inline int wil_ring_avail_high(struct wil_ring *ring) 71f9e3033fSDedy Lansky { 7210590c6aSGidon Studinski return wil_ring_avail_tx(ring) > wil_ring_wmark_high(ring); 73f9e3033fSDedy Lansky } 74f9e3033fSDedy Lansky 75fe9ee51eSMaya Erez /* returns true when all tx vrings are empty */ 76fe9ee51eSMaya Erez bool wil_is_tx_idle(struct wil6210_priv *wil) 77fe9ee51eSMaya Erez { 78fe9ee51eSMaya Erez int i; 79fe9ee51eSMaya Erez unsigned long data_comp_to; 80df2b5388SMaya Erez int min_ring_id = wil_get_min_tx_ring_id(wil); 81fe9ee51eSMaya Erez 82df2b5388SMaya Erez for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 8310590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[i]; 8410590c6aSGidon Studinski int vring_index = vring - wil->ring_tx; 8510590c6aSGidon Studinski struct wil_ring_tx_data *txdata = 8610590c6aSGidon Studinski &wil->ring_tx_data[vring_index]; 87fe9ee51eSMaya Erez 88fe9ee51eSMaya Erez spin_lock(&txdata->lock); 89fe9ee51eSMaya Erez 90fe9ee51eSMaya Erez if (!vring->va || !txdata->enabled) { 91fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 92fe9ee51eSMaya Erez continue; 93fe9ee51eSMaya Erez } 94fe9ee51eSMaya Erez 95fe9ee51eSMaya Erez data_comp_to = jiffies + msecs_to_jiffies( 96fe9ee51eSMaya Erez WIL_DATA_COMPLETION_TO_MS); 97fe9ee51eSMaya Erez if (test_bit(wil_status_napi_en, wil->status)) { 9810590c6aSGidon Studinski while (!wil_ring_is_empty(vring)) { 99fe9ee51eSMaya Erez if (time_after(jiffies, data_comp_to)) { 100fe9ee51eSMaya Erez wil_dbg_pm(wil, 101fe9ee51eSMaya Erez "TO waiting for idle tx\n"); 102fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 103fe9ee51eSMaya Erez return false; 104fe9ee51eSMaya Erez } 105fe9ee51eSMaya Erez wil_dbg_ratelimited(wil, 106fe9ee51eSMaya Erez "tx vring is not empty -> NAPI\n"); 107fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 108fe9ee51eSMaya Erez napi_synchronize(&wil->napi_tx); 109fe9ee51eSMaya Erez msleep(20); 110fe9ee51eSMaya Erez spin_lock(&txdata->lock); 111fe9ee51eSMaya Erez if (!vring->va || !txdata->enabled) 112fe9ee51eSMaya Erez break; 113fe9ee51eSMaya Erez } 114fe9ee51eSMaya Erez } 115fe9ee51eSMaya Erez 116fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 117fe9ee51eSMaya Erez } 118fe9ee51eSMaya Erez 119fe9ee51eSMaya Erez return true; 120fe9ee51eSMaya Erez } 121fe9ee51eSMaya Erez 12210590c6aSGidon Studinski static int wil_vring_alloc(struct wil6210_priv *wil, struct wil_ring *vring) 1232be7d22fSVladimir Kondratiev { 1242be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 1252be7d22fSVladimir Kondratiev size_t sz = vring->size * sizeof(vring->va[0]); 1262be7d22fSVladimir Kondratiev uint i; 1272be7d22fSVladimir Kondratiev 128af3db60aSLazar Alexei wil_dbg_misc(wil, "vring_alloc:\n"); 1299cf10d62SVladimir Kondratiev 1302be7d22fSVladimir Kondratiev BUILD_BUG_ON(sizeof(vring->va[0]) != 32); 1312be7d22fSVladimir Kondratiev 1322be7d22fSVladimir Kondratiev vring->swhead = 0; 1332be7d22fSVladimir Kondratiev vring->swtail = 0; 134f88f113aSVladimir Kondratiev vring->ctx = kcalloc(vring->size, sizeof(vring->ctx[0]), GFP_KERNEL); 1352be7d22fSVladimir Kondratiev if (!vring->ctx) { 1362be7d22fSVladimir Kondratiev vring->va = NULL; 1372be7d22fSVladimir Kondratiev return -ENOMEM; 1382be7d22fSVladimir Kondratiev } 139f2de576dSHamad Kadmany 1400436fd9aSVladimir Shulman /* vring->va should be aligned on its size rounded up to power of 2 141f2de576dSHamad Kadmany * This is granted by the dma_alloc_coherent. 142f2de576dSHamad Kadmany * 143f2de576dSHamad Kadmany * HW has limitation that all vrings addresses must share the same 144f2de576dSHamad Kadmany * upper 16 msb bits part of 48 bits address. To workaround that, 1453dc2c13bSLazar Alexei * if we are using more than 32 bit addresses switch to 32 bit 1463dc2c13bSLazar Alexei * allocation before allocating vring memory. 147f2de576dSHamad Kadmany * 148f2de576dSHamad Kadmany * There's no check for the return value of dma_set_mask_and_coherent, 149f2de576dSHamad Kadmany * since we assume if we were able to set the mask during 150f2de576dSHamad Kadmany * initialization in this system it will not fail if we set it again 1512be7d22fSVladimir Kondratiev */ 1523dc2c13bSLazar Alexei if (wil->dma_addr_size > 32) 153f2de576dSHamad Kadmany dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); 154f2de576dSHamad Kadmany 1552be7d22fSVladimir Kondratiev vring->va = dma_alloc_coherent(dev, sz, &vring->pa, GFP_KERNEL); 1562be7d22fSVladimir Kondratiev if (!vring->va) { 1572be7d22fSVladimir Kondratiev kfree(vring->ctx); 1582be7d22fSVladimir Kondratiev vring->ctx = NULL; 1592be7d22fSVladimir Kondratiev return -ENOMEM; 1602be7d22fSVladimir Kondratiev } 161f2de576dSHamad Kadmany 1623dc2c13bSLazar Alexei if (wil->dma_addr_size > 32) 1633dc2c13bSLazar Alexei dma_set_mask_and_coherent(dev, 1643dc2c13bSLazar Alexei DMA_BIT_MASK(wil->dma_addr_size)); 165f2de576dSHamad Kadmany 1662be7d22fSVladimir Kondratiev /* initially, all descriptors are SW owned 1672be7d22fSVladimir Kondratiev * For Tx and Rx, ownership bit is at the same location, thus 1682be7d22fSVladimir Kondratiev * we can use any 1692be7d22fSVladimir Kondratiev */ 1702be7d22fSVladimir Kondratiev for (i = 0; i < vring->size; i++) { 17110590c6aSGidon Studinski volatile struct vring_tx_desc *_d = 17210590c6aSGidon Studinski &vring->va[i].tx.legacy; 1738fe59627SVladimir Kondratiev 17468ada71eSVladimir Kondratiev _d->dma.status = TX_DMA_STATUS_DU; 1752be7d22fSVladimir Kondratiev } 1762be7d22fSVladimir Kondratiev 17739c52ee8SVladimir Kondratiev wil_dbg_misc(wil, "vring[%d] 0x%p:%pad 0x%p\n", vring->size, 17839c52ee8SVladimir Kondratiev vring->va, &vring->pa, vring->ctx); 1792be7d22fSVladimir Kondratiev 1802be7d22fSVladimir Kondratiev return 0; 1812be7d22fSVladimir Kondratiev } 1822be7d22fSVladimir Kondratiev 1839202d7b6SMaya Erez static void wil_txdesc_unmap(struct device *dev, union wil_tx_desc *desc, 1842232abd5SVladimir Kondratiev struct wil_ctx *ctx) 1852232abd5SVladimir Kondratiev { 1869202d7b6SMaya Erez struct vring_tx_desc *d = &desc->legacy; 1872232abd5SVladimir Kondratiev dma_addr_t pa = wil_desc_addr(&d->dma.addr); 1882232abd5SVladimir Kondratiev u16 dmalen = le16_to_cpu(d->dma.length); 1898fe59627SVladimir Kondratiev 1902232abd5SVladimir Kondratiev switch (ctx->mapped_as) { 1912232abd5SVladimir Kondratiev case wil_mapped_as_single: 1922232abd5SVladimir Kondratiev dma_unmap_single(dev, pa, dmalen, DMA_TO_DEVICE); 1932232abd5SVladimir Kondratiev break; 1942232abd5SVladimir Kondratiev case wil_mapped_as_page: 1952232abd5SVladimir Kondratiev dma_unmap_page(dev, pa, dmalen, DMA_TO_DEVICE); 1962232abd5SVladimir Kondratiev break; 1972232abd5SVladimir Kondratiev default: 1982232abd5SVladimir Kondratiev break; 1992232abd5SVladimir Kondratiev } 2002232abd5SVladimir Kondratiev } 2012232abd5SVladimir Kondratiev 20296c93589SGidon Studinski static void wil_vring_free(struct wil6210_priv *wil, struct wil_ring *vring) 2032be7d22fSVladimir Kondratiev { 2042be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 2052be7d22fSVladimir Kondratiev size_t sz = vring->size * sizeof(vring->va[0]); 2062be7d22fSVladimir Kondratiev 2079b1ba7b2SVladimir Kondratiev lockdep_assert_held(&wil->mutex); 20896c93589SGidon Studinski if (!vring->is_rx) { 20910590c6aSGidon Studinski int vring_index = vring - wil->ring_tx; 210ef77285fSVladimir Kondratiev 211ef77285fSVladimir Kondratiev wil_dbg_misc(wil, "free Tx vring %d [%d] 0x%p:%pad 0x%p\n", 212ef77285fSVladimir Kondratiev vring_index, vring->size, vring->va, 213ef77285fSVladimir Kondratiev &vring->pa, vring->ctx); 214ef77285fSVladimir Kondratiev } else { 215ef77285fSVladimir Kondratiev wil_dbg_misc(wil, "free Rx vring [%d] 0x%p:%pad 0x%p\n", 216ef77285fSVladimir Kondratiev vring->size, vring->va, 217ef77285fSVladimir Kondratiev &vring->pa, vring->ctx); 218ef77285fSVladimir Kondratiev } 219ef77285fSVladimir Kondratiev 22010590c6aSGidon Studinski while (!wil_ring_is_empty(vring)) { 22168ada71eSVladimir Kondratiev dma_addr_t pa; 2227e594444SVladimir Kondratiev u16 dmalen; 223f88f113aSVladimir Kondratiev struct wil_ctx *ctx; 22468ada71eSVladimir Kondratiev 22596c93589SGidon Studinski if (!vring->is_rx) { 22668ada71eSVladimir Kondratiev struct vring_tx_desc dd, *d = ⅆ 22768ada71eSVladimir Kondratiev volatile struct vring_tx_desc *_d = 22810590c6aSGidon Studinski &vring->va[vring->swtail].tx.legacy; 22968ada71eSVladimir Kondratiev 230f88f113aSVladimir Kondratiev ctx = &vring->ctx[vring->swtail]; 23134b8886eSMaya Erez if (!ctx) { 23234b8886eSMaya Erez wil_dbg_txrx(wil, 23334b8886eSMaya Erez "ctx(%d) was already completed\n", 23434b8886eSMaya Erez vring->swtail); 23510590c6aSGidon Studinski vring->swtail = wil_ring_next_tail(vring); 23634b8886eSMaya Erez continue; 23734b8886eSMaya Erez } 23868ada71eSVladimir Kondratiev *d = *_d; 2399202d7b6SMaya Erez wil_txdesc_unmap(dev, (union wil_tx_desc *)d, ctx); 240f88f113aSVladimir Kondratiev if (ctx->skb) 241f88f113aSVladimir Kondratiev dev_kfree_skb_any(ctx->skb); 24210590c6aSGidon Studinski vring->swtail = wil_ring_next_tail(vring); 2432be7d22fSVladimir Kondratiev } else { /* rx */ 24468ada71eSVladimir Kondratiev struct vring_rx_desc dd, *d = ⅆ 24568ada71eSVladimir Kondratiev volatile struct vring_rx_desc *_d = 24610590c6aSGidon Studinski &vring->va[vring->swhead].rx.legacy; 24768ada71eSVladimir Kondratiev 248f88f113aSVladimir Kondratiev ctx = &vring->ctx[vring->swhead]; 24968ada71eSVladimir Kondratiev *d = *_d; 25068ada71eSVladimir Kondratiev pa = wil_desc_addr(&d->dma.addr); 2517e594444SVladimir Kondratiev dmalen = le16_to_cpu(d->dma.length); 2527e594444SVladimir Kondratiev dma_unmap_single(dev, pa, dmalen, DMA_FROM_DEVICE); 253f88f113aSVladimir Kondratiev kfree_skb(ctx->skb); 25410590c6aSGidon Studinski wil_ring_advance_head(vring, 1); 2552be7d22fSVladimir Kondratiev } 2562be7d22fSVladimir Kondratiev } 2572be7d22fSVladimir Kondratiev dma_free_coherent(dev, sz, (void *)vring->va, vring->pa); 2582be7d22fSVladimir Kondratiev kfree(vring->ctx); 2592be7d22fSVladimir Kondratiev vring->pa = 0; 2602be7d22fSVladimir Kondratiev vring->va = NULL; 2612be7d22fSVladimir Kondratiev vring->ctx = NULL; 2622be7d22fSVladimir Kondratiev } 2632be7d22fSVladimir Kondratiev 2642be7d22fSVladimir Kondratiev /** 2652be7d22fSVladimir Kondratiev * Allocate one skb for Rx VRING 2662be7d22fSVladimir Kondratiev * 2672be7d22fSVladimir Kondratiev * Safe to call from IRQ 2682be7d22fSVladimir Kondratiev */ 26910590c6aSGidon Studinski static int wil_vring_alloc_skb(struct wil6210_priv *wil, struct wil_ring *vring, 2702be7d22fSVladimir Kondratiev u32 i, int headroom) 2712be7d22fSVladimir Kondratiev { 2722be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 27352a45702SLior David unsigned int sz = wil->rx_buf_len + ETH_HLEN + wil_rx_snaplen(); 27468ada71eSVladimir Kondratiev struct vring_rx_desc dd, *d = ⅆ 27510590c6aSGidon Studinski volatile struct vring_rx_desc *_d = &vring->va[i].rx.legacy; 2762be7d22fSVladimir Kondratiev dma_addr_t pa; 2772be7d22fSVladimir Kondratiev struct sk_buff *skb = dev_alloc_skb(sz + headroom); 2788fe59627SVladimir Kondratiev 2792be7d22fSVladimir Kondratiev if (unlikely(!skb)) 2802be7d22fSVladimir Kondratiev return -ENOMEM; 2812be7d22fSVladimir Kondratiev 2822be7d22fSVladimir Kondratiev skb_reserve(skb, headroom); 2832be7d22fSVladimir Kondratiev skb_put(skb, sz); 2842be7d22fSVladimir Kondratiev 2850b853210SMaya Erez /** 2860b853210SMaya Erez * Make sure that the network stack calculates checksum for packets 2870b853210SMaya Erez * which failed the HW checksum calculation 2880b853210SMaya Erez */ 2890b853210SMaya Erez skb->ip_summed = CHECKSUM_NONE; 2900b853210SMaya Erez 2912be7d22fSVladimir Kondratiev pa = dma_map_single(dev, skb->data, skb->len, DMA_FROM_DEVICE); 2922be7d22fSVladimir Kondratiev if (unlikely(dma_mapping_error(dev, pa))) { 2932be7d22fSVladimir Kondratiev kfree_skb(skb); 2942be7d22fSVladimir Kondratiev return -ENOMEM; 2952be7d22fSVladimir Kondratiev } 2962be7d22fSVladimir Kondratiev 29748c963afSVladimir Kondratiev d->dma.d0 = RX_DMA_D0_CMD_DMA_RT | RX_DMA_D0_CMD_DMA_IT; 29868ada71eSVladimir Kondratiev wil_desc_addr_set(&d->dma.addr, pa); 2992be7d22fSVladimir Kondratiev /* ip_length don't care */ 3002be7d22fSVladimir Kondratiev /* b11 don't care */ 3012be7d22fSVladimir Kondratiev /* error don't care */ 3022be7d22fSVladimir Kondratiev d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ 3037e594444SVladimir Kondratiev d->dma.length = cpu_to_le16(sz); 30468ada71eSVladimir Kondratiev *_d = *d; 305f88f113aSVladimir Kondratiev vring->ctx[i].skb = skb; 3062be7d22fSVladimir Kondratiev 3072be7d22fSVladimir Kondratiev return 0; 3082be7d22fSVladimir Kondratiev } 3092be7d22fSVladimir Kondratiev 3102be7d22fSVladimir Kondratiev /** 3112be7d22fSVladimir Kondratiev * Adds radiotap header 3122be7d22fSVladimir Kondratiev * 3132be7d22fSVladimir Kondratiev * Any error indicated as "Bad FCS" 3142be7d22fSVladimir Kondratiev * 3152be7d22fSVladimir Kondratiev * Vendor data for 04:ce:14-1 (Wilocity-1) consists of: 3162be7d22fSVladimir Kondratiev * - Rx descriptor: 32 bytes 3172be7d22fSVladimir Kondratiev * - Phy info 3182be7d22fSVladimir Kondratiev */ 3192be7d22fSVladimir Kondratiev static void wil_rx_add_radiotap_header(struct wil6210_priv *wil, 32033e61169SVladimir Kondratiev struct sk_buff *skb) 3212be7d22fSVladimir Kondratiev { 3222be7d22fSVladimir Kondratiev struct wil6210_rtap { 3232be7d22fSVladimir Kondratiev struct ieee80211_radiotap_header rthdr; 3242be7d22fSVladimir Kondratiev /* fields should be in the order of bits in rthdr.it_present */ 3252be7d22fSVladimir Kondratiev /* flags */ 3262be7d22fSVladimir Kondratiev u8 flags; 3272be7d22fSVladimir Kondratiev /* channel */ 3282be7d22fSVladimir Kondratiev __le16 chnl_freq __aligned(2); 3292be7d22fSVladimir Kondratiev __le16 chnl_flags; 3302be7d22fSVladimir Kondratiev /* MCS */ 3312be7d22fSVladimir Kondratiev u8 mcs_present; 3322be7d22fSVladimir Kondratiev u8 mcs_flags; 3332be7d22fSVladimir Kondratiev u8 mcs_index; 3342be7d22fSVladimir Kondratiev } __packed; 3352be7d22fSVladimir Kondratiev struct wil6210_rtap_vendor { 3362be7d22fSVladimir Kondratiev struct wil6210_rtap rtap; 3372be7d22fSVladimir Kondratiev /* vendor */ 3382be7d22fSVladimir Kondratiev u8 vendor_oui[3] __aligned(2); 3392be7d22fSVladimir Kondratiev u8 vendor_ns; 3402be7d22fSVladimir Kondratiev __le16 vendor_skip; 3412be7d22fSVladimir Kondratiev u8 vendor_data[0]; 3422be7d22fSVladimir Kondratiev } __packed; 34333e61169SVladimir Kondratiev struct vring_rx_desc *d = wil_skb_rxdesc(skb); 3442be7d22fSVladimir Kondratiev struct wil6210_rtap_vendor *rtap_vendor; 3452be7d22fSVladimir Kondratiev int rtap_len = sizeof(struct wil6210_rtap); 3462be7d22fSVladimir Kondratiev int phy_length = 0; /* phy info header size, bytes */ 3472be7d22fSVladimir Kondratiev static char phy_data[128]; 3487d3e4dbeSLior David struct ieee80211_channel *ch = wil->monitor_chandef.chan; 3492be7d22fSVladimir Kondratiev 3502be7d22fSVladimir Kondratiev if (rtap_include_phy_info) { 3512be7d22fSVladimir Kondratiev rtap_len = sizeof(*rtap_vendor) + sizeof(*d); 3522be7d22fSVladimir Kondratiev /* calculate additional length */ 3532be7d22fSVladimir Kondratiev if (d->dma.status & RX_DMA_STATUS_PHY_INFO) { 3542be7d22fSVladimir Kondratiev /** 3552be7d22fSVladimir Kondratiev * PHY info starts from 8-byte boundary 3562be7d22fSVladimir Kondratiev * there are 8-byte lines, last line may be partially 3572be7d22fSVladimir Kondratiev * written (HW bug), thus FW configures for last line 3582be7d22fSVladimir Kondratiev * to be excessive. Driver skips this last line. 3592be7d22fSVladimir Kondratiev */ 3602be7d22fSVladimir Kondratiev int len = min_t(int, 8 + sizeof(phy_data), 3612be7d22fSVladimir Kondratiev wil_rxdesc_phy_length(d)); 3628fe59627SVladimir Kondratiev 3632be7d22fSVladimir Kondratiev if (len > 8) { 3642be7d22fSVladimir Kondratiev void *p = skb_tail_pointer(skb); 3652be7d22fSVladimir Kondratiev void *pa = PTR_ALIGN(p, 8); 3668fe59627SVladimir Kondratiev 3672be7d22fSVladimir Kondratiev if (skb_tailroom(skb) >= len + (pa - p)) { 3682be7d22fSVladimir Kondratiev phy_length = len - 8; 3692be7d22fSVladimir Kondratiev memcpy(phy_data, pa, phy_length); 3702be7d22fSVladimir Kondratiev } 3712be7d22fSVladimir Kondratiev } 3722be7d22fSVladimir Kondratiev } 3732be7d22fSVladimir Kondratiev rtap_len += phy_length; 3742be7d22fSVladimir Kondratiev } 3752be7d22fSVladimir Kondratiev 3762be7d22fSVladimir Kondratiev if (skb_headroom(skb) < rtap_len && 3772be7d22fSVladimir Kondratiev pskb_expand_head(skb, rtap_len, 0, GFP_ATOMIC)) { 3789165dabbSMasanari Iida wil_err(wil, "Unable to expand headroom to %d\n", rtap_len); 3792be7d22fSVladimir Kondratiev return; 3802be7d22fSVladimir Kondratiev } 3812be7d22fSVladimir Kondratiev 382d58ff351SJohannes Berg rtap_vendor = skb_push(skb, rtap_len); 3832be7d22fSVladimir Kondratiev memset(rtap_vendor, 0, rtap_len); 3842be7d22fSVladimir Kondratiev 3852be7d22fSVladimir Kondratiev rtap_vendor->rtap.rthdr.it_version = PKTHDR_RADIOTAP_VERSION; 3862be7d22fSVladimir Kondratiev rtap_vendor->rtap.rthdr.it_len = cpu_to_le16(rtap_len); 3872be7d22fSVladimir Kondratiev rtap_vendor->rtap.rthdr.it_present = cpu_to_le32( 3882be7d22fSVladimir Kondratiev (1 << IEEE80211_RADIOTAP_FLAGS) | 3892be7d22fSVladimir Kondratiev (1 << IEEE80211_RADIOTAP_CHANNEL) | 3902be7d22fSVladimir Kondratiev (1 << IEEE80211_RADIOTAP_MCS)); 3912be7d22fSVladimir Kondratiev if (d->dma.status & RX_DMA_STATUS_ERROR) 3922be7d22fSVladimir Kondratiev rtap_vendor->rtap.flags |= IEEE80211_RADIOTAP_F_BADFCS; 3932be7d22fSVladimir Kondratiev 3942be7d22fSVladimir Kondratiev rtap_vendor->rtap.chnl_freq = cpu_to_le16(ch ? ch->center_freq : 58320); 3952be7d22fSVladimir Kondratiev rtap_vendor->rtap.chnl_flags = cpu_to_le16(0); 3962be7d22fSVladimir Kondratiev 3972be7d22fSVladimir Kondratiev rtap_vendor->rtap.mcs_present = IEEE80211_RADIOTAP_MCS_HAVE_MCS; 3982be7d22fSVladimir Kondratiev rtap_vendor->rtap.mcs_flags = 0; 3992be7d22fSVladimir Kondratiev rtap_vendor->rtap.mcs_index = wil_rxdesc_mcs(d); 4002be7d22fSVladimir Kondratiev 4012be7d22fSVladimir Kondratiev if (rtap_include_phy_info) { 4022be7d22fSVladimir Kondratiev rtap_vendor->rtap.rthdr.it_present |= cpu_to_le32(1 << 4032be7d22fSVladimir Kondratiev IEEE80211_RADIOTAP_VENDOR_NAMESPACE); 4042be7d22fSVladimir Kondratiev /* OUI for Wilocity 04:ce:14 */ 4052be7d22fSVladimir Kondratiev rtap_vendor->vendor_oui[0] = 0x04; 4062be7d22fSVladimir Kondratiev rtap_vendor->vendor_oui[1] = 0xce; 4072be7d22fSVladimir Kondratiev rtap_vendor->vendor_oui[2] = 0x14; 4082be7d22fSVladimir Kondratiev rtap_vendor->vendor_ns = 1; 4092be7d22fSVladimir Kondratiev /* Rx descriptor + PHY data */ 4102be7d22fSVladimir Kondratiev rtap_vendor->vendor_skip = cpu_to_le16(sizeof(*d) + 4112be7d22fSVladimir Kondratiev phy_length); 4122be7d22fSVladimir Kondratiev memcpy(rtap_vendor->vendor_data, (void *)d, sizeof(*d)); 4132be7d22fSVladimir Kondratiev memcpy(rtap_vendor->vendor_data + sizeof(*d), phy_data, 4142be7d22fSVladimir Kondratiev phy_length); 4152be7d22fSVladimir Kondratiev } 4162be7d22fSVladimir Kondratiev } 4172be7d22fSVladimir Kondratiev 4187be13fc3SGidon Studinski static bool wil_is_rx_idle(struct wil6210_priv *wil) 419fe9ee51eSMaya Erez { 420fe9ee51eSMaya Erez struct vring_rx_desc *_d; 42110590c6aSGidon Studinski struct wil_ring *ring = &wil->ring_rx; 422fe9ee51eSMaya Erez 42310590c6aSGidon Studinski _d = (struct vring_rx_desc *)&ring->va[ring->swhead].rx.legacy; 424fe9ee51eSMaya Erez if (_d->dma.status & RX_DMA_STATUS_DU) 425fe9ee51eSMaya Erez return false; 426fe9ee51eSMaya Erez 427fe9ee51eSMaya Erez return true; 428fe9ee51eSMaya Erez } 429fe9ee51eSMaya Erez 4302be7d22fSVladimir Kondratiev /** 4312be7d22fSVladimir Kondratiev * reap 1 frame from @swhead 4322be7d22fSVladimir Kondratiev * 43333e61169SVladimir Kondratiev * Rx descriptor copied to skb->cb 43433e61169SVladimir Kondratiev * 4352be7d22fSVladimir Kondratiev * Safe to call from IRQ 4362be7d22fSVladimir Kondratiev */ 4372be7d22fSVladimir Kondratiev static struct sk_buff *wil_vring_reap_rx(struct wil6210_priv *wil, 43810590c6aSGidon Studinski struct wil_ring *vring) 4392be7d22fSVladimir Kondratiev { 4402be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 4415bd60982SLior David struct wil6210_vif *vif; 4425bd60982SLior David struct net_device *ndev; 44368ada71eSVladimir Kondratiev volatile struct vring_rx_desc *_d; 44468ada71eSVladimir Kondratiev struct vring_rx_desc *d; 4452be7d22fSVladimir Kondratiev struct sk_buff *skb; 4462be7d22fSVladimir Kondratiev dma_addr_t pa; 447c406ea7cSVladimir Kondratiev unsigned int snaplen = wil_rx_snaplen(); 44852a45702SLior David unsigned int sz = wil->rx_buf_len + ETH_HLEN + snaplen; 4497e594444SVladimir Kondratiev u16 dmalen; 4502be7d22fSVladimir Kondratiev u8 ftype; 4515bd60982SLior David int cid, mid; 4523b282bc6SVladimir Kondratiev int i; 453c8b78b5fSVladimir Kondratiev struct wil_net_stats *stats; 454c8b78b5fSVladimir Kondratiev 45533e61169SVladimir Kondratiev BUILD_BUG_ON(sizeof(struct vring_rx_desc) > sizeof(skb->cb)); 45633e61169SVladimir Kondratiev 4573b282bc6SVladimir Kondratiev again: 45810590c6aSGidon Studinski if (unlikely(wil_ring_is_empty(vring))) 4592be7d22fSVladimir Kondratiev return NULL; 4602be7d22fSVladimir Kondratiev 4613b282bc6SVladimir Kondratiev i = (int)vring->swhead; 46210590c6aSGidon Studinski _d = &vring->va[i].rx.legacy; 46333c477fdSVladimir Kondratiev if (unlikely(!(_d->dma.status & RX_DMA_STATUS_DU))) { 4642be7d22fSVladimir Kondratiev /* it is not error, we just reached end of Rx done area */ 4652be7d22fSVladimir Kondratiev return NULL; 4662be7d22fSVladimir Kondratiev } 4672be7d22fSVladimir Kondratiev 468148416a9SVladimir Kondratiev skb = vring->ctx[i].skb; 469148416a9SVladimir Kondratiev vring->ctx[i].skb = NULL; 47010590c6aSGidon Studinski wil_ring_advance_head(vring, 1); 471148416a9SVladimir Kondratiev if (!skb) { 472148416a9SVladimir Kondratiev wil_err(wil, "No Rx skb at [%d]\n", i); 4733b282bc6SVladimir Kondratiev goto again; 474148416a9SVladimir Kondratiev } 47568ada71eSVladimir Kondratiev d = wil_skb_rxdesc(skb); 47668ada71eSVladimir Kondratiev *d = *_d; 47768ada71eSVladimir Kondratiev pa = wil_desc_addr(&d->dma.addr); 47868ada71eSVladimir Kondratiev 47968ada71eSVladimir Kondratiev dma_unmap_single(dev, pa, sz, DMA_FROM_DEVICE); 48068ada71eSVladimir Kondratiev dmalen = le16_to_cpu(d->dma.length); 48168ada71eSVladimir Kondratiev 482148416a9SVladimir Kondratiev trace_wil6210_rx(i, d); 483148416a9SVladimir Kondratiev wil_dbg_txrx(wil, "Rx[%3d] : %d bytes\n", i, dmalen); 484a8313341SVladimir Kondratiev wil_hex_dump_txrx("RxD ", DUMP_PREFIX_NONE, 32, 4, 48568ada71eSVladimir Kondratiev (const void *)d, sizeof(*d), false); 48668ada71eSVladimir Kondratiev 4873b282bc6SVladimir Kondratiev cid = wil_rxdesc_cid(d); 4885bd60982SLior David mid = wil_rxdesc_mid(d); 4895bd60982SLior David vif = wil->vifs[mid]; 4905bd60982SLior David 4915bd60982SLior David if (unlikely(!vif)) { 4925bd60982SLior David wil_dbg_txrx(wil, "skipped RX descriptor with invalid mid %d", 4935bd60982SLior David mid); 4945bd60982SLior David kfree_skb(skb); 4955bd60982SLior David goto again; 4965bd60982SLior David } 4975bd60982SLior David ndev = vif_to_ndev(vif); 4983b282bc6SVladimir Kondratiev stats = &wil->sta[cid].stats; 4993b282bc6SVladimir Kondratiev 50033c477fdSVladimir Kondratiev if (unlikely(dmalen > sz)) { 501e270045bSVladimir Kondratiev wil_err(wil, "Rx size too large: %d bytes!\n", dmalen); 5023b282bc6SVladimir Kondratiev stats->rx_large_frame++; 503110dea00SWei Yongjun kfree_skb(skb); 5043b282bc6SVladimir Kondratiev goto again; 505e270045bSVladimir Kondratiev } 5067e594444SVladimir Kondratiev skb_trim(skb, dmalen); 50733e61169SVladimir Kondratiev 5081cbbcb08SVladimir Kondratiev prefetch(skb->data); 5091cbbcb08SVladimir Kondratiev 510c0d37713SVladimir Kondratiev wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, 511c0d37713SVladimir Kondratiev skb->data, skb_headlen(skb), false); 512c0d37713SVladimir Kondratiev 513c8b78b5fSVladimir Kondratiev stats->last_mcs_rx = wil_rxdesc_mcs(d); 514c4a110d8SVladimir Kondratiev if (stats->last_mcs_rx < ARRAY_SIZE(stats->rx_per_mcs)) 515c4a110d8SVladimir Kondratiev stats->rx_per_mcs[stats->last_mcs_rx]++; 5162be7d22fSVladimir Kondratiev 5172be7d22fSVladimir Kondratiev /* use radiotap header only if required */ 5182be7d22fSVladimir Kondratiev if (ndev->type == ARPHRD_IEEE80211_RADIOTAP) 51933e61169SVladimir Kondratiev wil_rx_add_radiotap_header(wil, skb); 5202be7d22fSVladimir Kondratiev 5212be7d22fSVladimir Kondratiev /* no extra checks if in sniffer mode */ 5222be7d22fSVladimir Kondratiev if (ndev->type != ARPHRD_ETHER) 5232be7d22fSVladimir Kondratiev return skb; 524a8313341SVladimir Kondratiev /* Non-data frames may be delivered through Rx DMA channel (ex: BAR) 5252be7d22fSVladimir Kondratiev * Driver should recognize it by frame type, that is found 5262be7d22fSVladimir Kondratiev * in Rx descriptor. If type is not data, it is 802.11 frame as is 5272be7d22fSVladimir Kondratiev */ 52868ada71eSVladimir Kondratiev ftype = wil_rxdesc_ftype(d) << 2; 52933c477fdSVladimir Kondratiev if (unlikely(ftype != IEEE80211_FTYPE_DATA)) { 530a8313341SVladimir Kondratiev u8 fc1 = wil_rxdesc_fc1(d); 531a8313341SVladimir Kondratiev int tid = wil_rxdesc_tid(d); 532a8313341SVladimir Kondratiev u16 seq = wil_rxdesc_seq(d); 533a8313341SVladimir Kondratiev 534a8313341SVladimir Kondratiev wil_dbg_txrx(wil, 535a8313341SVladimir Kondratiev "Non-data frame FC[7:0] 0x%02x MID %d CID %d TID %d Seq 0x%03x\n", 536a8313341SVladimir Kondratiev fc1, mid, cid, tid, seq); 5373b282bc6SVladimir Kondratiev stats->rx_non_data_frame++; 538a8313341SVladimir Kondratiev if (wil_is_back_req(fc1)) { 539a8313341SVladimir Kondratiev wil_dbg_txrx(wil, 540a8313341SVladimir Kondratiev "BAR: MID %d CID %d TID %d Seq 0x%03x\n", 541a8313341SVladimir Kondratiev mid, cid, tid, seq); 5425bd60982SLior David wil_rx_bar(wil, vif, cid, tid, seq); 543a8313341SVladimir Kondratiev } else { 544a8313341SVladimir Kondratiev /* print again all info. One can enable only this 545a8313341SVladimir Kondratiev * without overhead for printing every Rx frame 546a8313341SVladimir Kondratiev */ 547a8313341SVladimir Kondratiev wil_dbg_txrx(wil, 548a8313341SVladimir Kondratiev "Unhandled non-data frame FC[7:0] 0x%02x MID %d CID %d TID %d Seq 0x%03x\n", 549a8313341SVladimir Kondratiev fc1, mid, cid, tid, seq); 550a8313341SVladimir Kondratiev wil_hex_dump_txrx("RxD ", DUMP_PREFIX_NONE, 32, 4, 551a8313341SVladimir Kondratiev (const void *)d, sizeof(*d), false); 552a8313341SVladimir Kondratiev wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1, 553a8313341SVladimir Kondratiev skb->data, skb_headlen(skb), false); 554a8313341SVladimir Kondratiev } 5552be7d22fSVladimir Kondratiev kfree_skb(skb); 5563b282bc6SVladimir Kondratiev goto again; 5572be7d22fSVladimir Kondratiev } 5582be7d22fSVladimir Kondratiev 559c406ea7cSVladimir Kondratiev if (unlikely(skb->len < ETH_HLEN + snaplen)) { 5602be7d22fSVladimir Kondratiev wil_err(wil, "Short frame, len = %d\n", skb->len); 5613b282bc6SVladimir Kondratiev stats->rx_short_frame++; 5622be7d22fSVladimir Kondratiev kfree_skb(skb); 5633b282bc6SVladimir Kondratiev goto again; 5642be7d22fSVladimir Kondratiev } 5652be7d22fSVladimir Kondratiev 566504937d4SKirshenbaum Erez /* L4 IDENT is on when HW calculated checksum, check status 567504937d4SKirshenbaum Erez * and in case of error drop the packet 568504937d4SKirshenbaum Erez * higher stack layers will handle retransmission (if required) 569504937d4SKirshenbaum Erez */ 57033c477fdSVladimir Kondratiev if (likely(d->dma.status & RX_DMA_STATUS_L4I)) { 571504937d4SKirshenbaum Erez /* L4 protocol identified, csum calculated */ 57233c477fdSVladimir Kondratiev if (likely((d->dma.error & RX_DMA_ERROR_L4_ERR) == 0)) 573504937d4SKirshenbaum Erez skb->ip_summed = CHECKSUM_UNNECESSARY; 5744a68ab10SVladimir Kondratiev /* If HW reports bad checksum, let IP stack re-check it 5754a68ab10SVladimir Kondratiev * For example, HW don't understand Microsoft IP stack that 5764a68ab10SVladimir Kondratiev * mis-calculates TCP checksum - if it should be 0x0, 5774a68ab10SVladimir Kondratiev * it writes 0xffff in violation of RFC 1624 5784a68ab10SVladimir Kondratiev */ 5790b853210SMaya Erez else 5800b853210SMaya Erez stats->rx_csum_err++; 581504937d4SKirshenbaum Erez } 582504937d4SKirshenbaum Erez 583c406ea7cSVladimir Kondratiev if (snaplen) { 584c406ea7cSVladimir Kondratiev /* Packet layout 585c406ea7cSVladimir Kondratiev * +-------+-------+---------+------------+------+ 586c406ea7cSVladimir Kondratiev * | SA(6) | DA(6) | SNAP(6) | ETHTYPE(2) | DATA | 587c406ea7cSVladimir Kondratiev * +-------+-------+---------+------------+------+ 588c406ea7cSVladimir Kondratiev * Need to remove SNAP, shifting SA and DA forward 589c406ea7cSVladimir Kondratiev */ 590c406ea7cSVladimir Kondratiev memmove(skb->data + snaplen, skb->data, 2 * ETH_ALEN); 591c406ea7cSVladimir Kondratiev skb_pull(skb, snaplen); 592c406ea7cSVladimir Kondratiev } 593c406ea7cSVladimir Kondratiev 5942be7d22fSVladimir Kondratiev return skb; 5952be7d22fSVladimir Kondratiev } 5962be7d22fSVladimir Kondratiev 5972be7d22fSVladimir Kondratiev /** 5982be7d22fSVladimir Kondratiev * allocate and fill up to @count buffers in rx ring 5992be7d22fSVladimir Kondratiev * buffers posted at @swtail 6005bd60982SLior David * Note: we have a single RX queue for servicing all VIFs, but we 6015bd60982SLior David * allocate skbs with headroom according to main interface only. This 6025bd60982SLior David * means it will not work with monitor interface together with other VIFs. 6035bd60982SLior David * Currently we only support monitor interface on its own without other VIFs, 6045bd60982SLior David * and we will need to fix this code once we add support. 6052be7d22fSVladimir Kondratiev */ 6062be7d22fSVladimir Kondratiev static int wil_rx_refill(struct wil6210_priv *wil, int count) 6072be7d22fSVladimir Kondratiev { 608e00243faSLior David struct net_device *ndev = wil->main_ndev; 60910590c6aSGidon Studinski struct wil_ring *v = &wil->ring_rx; 6102be7d22fSVladimir Kondratiev u32 next_tail; 6112be7d22fSVladimir Kondratiev int rc = 0; 6122be7d22fSVladimir Kondratiev int headroom = ndev->type == ARPHRD_IEEE80211_RADIOTAP ? 6132be7d22fSVladimir Kondratiev WIL6210_RTAP_SIZE : 0; 6142be7d22fSVladimir Kondratiev 61510590c6aSGidon Studinski for (; next_tail = wil_ring_next_tail(v), 6162be7d22fSVladimir Kondratiev (next_tail != v->swhead) && (count-- > 0); 6172be7d22fSVladimir Kondratiev v->swtail = next_tail) { 6182be7d22fSVladimir Kondratiev rc = wil_vring_alloc_skb(wil, v, v->swtail, headroom); 61933c477fdSVladimir Kondratiev if (unlikely(rc)) { 6203d6b7272SDedy Lansky wil_err_ratelimited(wil, "Error %d in rx refill[%d]\n", 6212be7d22fSVladimir Kondratiev rc, v->swtail); 6222be7d22fSVladimir Kondratiev break; 6232be7d22fSVladimir Kondratiev } 6242be7d22fSVladimir Kondratiev } 625ab6d7cc3SMaya Erez 626ab6d7cc3SMaya Erez /* make sure all writes to descriptors (shared memory) are done before 627ab6d7cc3SMaya Erez * committing them to HW 628ab6d7cc3SMaya Erez */ 629ab6d7cc3SMaya Erez wmb(); 630ab6d7cc3SMaya Erez 631b9eeb512SVladimir Kondratiev wil_w(wil, v->hwtail, v->swtail); 6322be7d22fSVladimir Kondratiev 6332be7d22fSVladimir Kondratiev return rc; 6342be7d22fSVladimir Kondratiev } 6352be7d22fSVladimir Kondratiev 63658527421SVladimir Kondratiev /** 63758527421SVladimir Kondratiev * reverse_memcmp - Compare two areas of memory, in reverse order 63858527421SVladimir Kondratiev * @cs: One area of memory 63958527421SVladimir Kondratiev * @ct: Another area of memory 64058527421SVladimir Kondratiev * @count: The size of the area. 64158527421SVladimir Kondratiev * 64258527421SVladimir Kondratiev * Cut'n'paste from original memcmp (see lib/string.c) 64358527421SVladimir Kondratiev * with minimal modifications 64458527421SVladimir Kondratiev */ 6457be13fc3SGidon Studinski int reverse_memcmp(const void *cs, const void *ct, size_t count) 64658527421SVladimir Kondratiev { 64758527421SVladimir Kondratiev const unsigned char *su1, *su2; 64858527421SVladimir Kondratiev int res = 0; 64958527421SVladimir Kondratiev 65058527421SVladimir Kondratiev for (su1 = cs + count - 1, su2 = ct + count - 1; count > 0; 65158527421SVladimir Kondratiev --su1, --su2, count--) { 65258527421SVladimir Kondratiev res = *su1 - *su2; 65358527421SVladimir Kondratiev if (res) 65458527421SVladimir Kondratiev break; 65558527421SVladimir Kondratiev } 65658527421SVladimir Kondratiev return res; 65758527421SVladimir Kondratiev } 65858527421SVladimir Kondratiev 65958527421SVladimir Kondratiev static int wil_rx_crypto_check(struct wil6210_priv *wil, struct sk_buff *skb) 66058527421SVladimir Kondratiev { 66158527421SVladimir Kondratiev struct vring_rx_desc *d = wil_skb_rxdesc(skb); 66258527421SVladimir Kondratiev int cid = wil_rxdesc_cid(d); 66358527421SVladimir Kondratiev int tid = wil_rxdesc_tid(d); 66458527421SVladimir Kondratiev int key_id = wil_rxdesc_key_id(d); 66558527421SVladimir Kondratiev int mc = wil_rxdesc_mcast(d); 66658527421SVladimir Kondratiev struct wil_sta_info *s = &wil->sta[cid]; 66758527421SVladimir Kondratiev struct wil_tid_crypto_rx *c = mc ? &s->group_crypto_rx : 66858527421SVladimir Kondratiev &s->tid_crypto_rx[tid]; 66958527421SVladimir Kondratiev struct wil_tid_crypto_rx_single *cc = &c->key_id[key_id]; 67058527421SVladimir Kondratiev const u8 *pn = (u8 *)&d->mac.pn_15_0; 67158527421SVladimir Kondratiev 67258527421SVladimir Kondratiev if (!cc->key_set) { 67358527421SVladimir Kondratiev wil_err_ratelimited(wil, 67458527421SVladimir Kondratiev "Key missing. CID %d TID %d MCast %d KEY_ID %d\n", 67558527421SVladimir Kondratiev cid, tid, mc, key_id); 67658527421SVladimir Kondratiev return -EINVAL; 67758527421SVladimir Kondratiev } 67858527421SVladimir Kondratiev 67958527421SVladimir Kondratiev if (reverse_memcmp(pn, cc->pn, IEEE80211_GCMP_PN_LEN) <= 0) { 68058527421SVladimir Kondratiev wil_err_ratelimited(wil, 68158527421SVladimir Kondratiev "Replay attack. CID %d TID %d MCast %d KEY_ID %d PN %6phN last %6phN\n", 68258527421SVladimir Kondratiev cid, tid, mc, key_id, pn, cc->pn); 68358527421SVladimir Kondratiev return -EINVAL; 68458527421SVladimir Kondratiev } 68558527421SVladimir Kondratiev memcpy(cc->pn, pn, IEEE80211_GCMP_PN_LEN); 68658527421SVladimir Kondratiev 68758527421SVladimir Kondratiev return 0; 68858527421SVladimir Kondratiev } 68958527421SVladimir Kondratiev 690e15af41cSDedy Lansky static int wil_rx_error_check(struct wil6210_priv *wil, struct sk_buff *skb, 691e15af41cSDedy Lansky struct wil_net_stats *stats) 692e15af41cSDedy Lansky { 693e15af41cSDedy Lansky struct vring_rx_desc *d = wil_skb_rxdesc(skb); 694e15af41cSDedy Lansky 695e15af41cSDedy Lansky if ((d->dma.status & RX_DMA_STATUS_ERROR) && 696e15af41cSDedy Lansky (d->dma.error & RX_DMA_ERROR_MIC)) { 697e15af41cSDedy Lansky stats->rx_mic_error++; 698e15af41cSDedy Lansky wil_dbg_txrx(wil, "MIC error, dropping packet\n"); 699e15af41cSDedy Lansky return -EFAULT; 700e15af41cSDedy Lansky } 701e15af41cSDedy Lansky 702e15af41cSDedy Lansky return 0; 703e15af41cSDedy Lansky } 704e15af41cSDedy Lansky 7057be13fc3SGidon Studinski static void wil_get_netif_rx_params(struct sk_buff *skb, int *cid, 7067be13fc3SGidon Studinski int *security) 7077be13fc3SGidon Studinski { 7087be13fc3SGidon Studinski struct vring_rx_desc *d = wil_skb_rxdesc(skb); 7097be13fc3SGidon Studinski 7107be13fc3SGidon Studinski *cid = wil_rxdesc_cid(d); /* always 0..7, no need to check */ 7117be13fc3SGidon Studinski *security = wil_rxdesc_security(d); 7127be13fc3SGidon Studinski } 7137be13fc3SGidon Studinski 7142be7d22fSVladimir Kondratiev /* 7152be7d22fSVladimir Kondratiev * Pass Rx packet to the netif. Update statistics. 716e0287c4aSVladimir Kondratiev * Called in softirq context (NAPI poll). 7172be7d22fSVladimir Kondratiev */ 718b4490f42SVladimir Kondratiev void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) 7192be7d22fSVladimir Kondratiev { 720c42da999SVladimir Kondratiev gro_result_t rc = GRO_NORMAL; 721e00243faSLior David struct wil6210_vif *vif = ndev_to_vif(ndev); 722c8b78b5fSVladimir Kondratiev struct wil6210_priv *wil = ndev_to_wil(ndev); 723e00243faSLior David struct wireless_dev *wdev = vif_to_wdev(vif); 7242be7d22fSVladimir Kondratiev unsigned int len = skb->len; 7257be13fc3SGidon Studinski int cid; 7267be13fc3SGidon Studinski int security; 727c42da999SVladimir Kondratiev struct ethhdr *eth = (void *)skb->data; 728c42da999SVladimir Kondratiev /* here looking for DA, not A1, thus Rxdesc's 'mcast' indication 729c42da999SVladimir Kondratiev * is not suitable, need to look at data 730c42da999SVladimir Kondratiev */ 731c42da999SVladimir Kondratiev int mcast = is_multicast_ether_addr(eth->h_dest); 7327be13fc3SGidon Studinski struct wil_net_stats *stats; 733c42da999SVladimir Kondratiev struct sk_buff *xmit_skb = NULL; 734c42da999SVladimir Kondratiev static const char * const gro_res_str[] = { 735c42da999SVladimir Kondratiev [GRO_MERGED] = "GRO_MERGED", 736c42da999SVladimir Kondratiev [GRO_MERGED_FREE] = "GRO_MERGED_FREE", 737c42da999SVladimir Kondratiev [GRO_HELD] = "GRO_HELD", 738c42da999SVladimir Kondratiev [GRO_NORMAL] = "GRO_NORMAL", 739c42da999SVladimir Kondratiev [GRO_DROP] = "GRO_DROP", 740c42da999SVladimir Kondratiev }; 7412be7d22fSVladimir Kondratiev 7427be13fc3SGidon Studinski wil->txrx_ops.get_netif_rx_params(skb, &cid, &security); 7437be13fc3SGidon Studinski 7447be13fc3SGidon Studinski stats = &wil->sta[cid].stats; 7457be13fc3SGidon Studinski 746241804cbSVladimir Kondratiev skb_orphan(skb); 747241804cbSVladimir Kondratiev 7487be13fc3SGidon Studinski if (security && (wil->txrx_ops.rx_crypto_check(wil, skb) != 0)) { 74958527421SVladimir Kondratiev rc = GRO_DROP; 75058527421SVladimir Kondratiev dev_kfree_skb(skb); 75158527421SVladimir Kondratiev stats->rx_replay++; 75258527421SVladimir Kondratiev goto stats; 75358527421SVladimir Kondratiev } 75458527421SVladimir Kondratiev 755e15af41cSDedy Lansky /* check errors reported by HW and update statistics */ 756e15af41cSDedy Lansky if (unlikely(wil->txrx_ops.rx_error_check(wil, skb, stats))) { 757e15af41cSDedy Lansky dev_kfree_skb(skb); 758e15af41cSDedy Lansky return; 759e15af41cSDedy Lansky } 760e15af41cSDedy Lansky 7619a65064aSDedy Lansky if (wdev->iftype == NL80211_IFTYPE_STATION) { 7629a65064aSDedy Lansky if (mcast && ether_addr_equal(eth->h_source, ndev->dev_addr)) { 7639a65064aSDedy Lansky /* mcast packet looped back to us */ 7649a65064aSDedy Lansky rc = GRO_DROP; 7659a65064aSDedy Lansky dev_kfree_skb(skb); 7669a65064aSDedy Lansky goto stats; 7679a65064aSDedy Lansky } 7689a65064aSDedy Lansky } else if (wdev->iftype == NL80211_IFTYPE_AP && !vif->ap_isolate) { 769c42da999SVladimir Kondratiev if (mcast) { 770c42da999SVladimir Kondratiev /* send multicast frames both to higher layers in 771c42da999SVladimir Kondratiev * local net stack and back to the wireless medium 772c42da999SVladimir Kondratiev */ 773c42da999SVladimir Kondratiev xmit_skb = skb_copy(skb, GFP_ATOMIC); 774c42da999SVladimir Kondratiev } else { 775e00243faSLior David int xmit_cid = wil_find_cid(wil, vif->mid, 776e00243faSLior David eth->h_dest); 7772be7d22fSVladimir Kondratiev 778c42da999SVladimir Kondratiev if (xmit_cid >= 0) { 779c42da999SVladimir Kondratiev /* The destination station is associated to 780c42da999SVladimir Kondratiev * this AP (in this VLAN), so send the frame 781c42da999SVladimir Kondratiev * directly to it and do not pass it to local 782c42da999SVladimir Kondratiev * net stack. 783c42da999SVladimir Kondratiev */ 784c42da999SVladimir Kondratiev xmit_skb = skb; 785c42da999SVladimir Kondratiev skb = NULL; 786c42da999SVladimir Kondratiev } 787c42da999SVladimir Kondratiev } 788c42da999SVladimir Kondratiev } 789c42da999SVladimir Kondratiev if (xmit_skb) { 790c42da999SVladimir Kondratiev /* Send to wireless media and increase priority by 256 to 791c42da999SVladimir Kondratiev * keep the received priority instead of reclassifying 792c42da999SVladimir Kondratiev * the frame (see cfg80211_classify8021d). 793c42da999SVladimir Kondratiev */ 794c42da999SVladimir Kondratiev xmit_skb->dev = ndev; 795c42da999SVladimir Kondratiev xmit_skb->priority += 256; 796c42da999SVladimir Kondratiev xmit_skb->protocol = htons(ETH_P_802_3); 797c42da999SVladimir Kondratiev skb_reset_network_header(xmit_skb); 798c42da999SVladimir Kondratiev skb_reset_mac_header(xmit_skb); 799c42da999SVladimir Kondratiev wil_dbg_txrx(wil, "Rx -> Tx %d bytes\n", len); 800c42da999SVladimir Kondratiev dev_queue_xmit(xmit_skb); 801c42da999SVladimir Kondratiev } 802c42da999SVladimir Kondratiev 803c42da999SVladimir Kondratiev if (skb) { /* deliver to local stack */ 804c42da999SVladimir Kondratiev skb->protocol = eth_type_trans(skb, ndev); 8055bd60982SLior David skb->dev = ndev; 806c42da999SVladimir Kondratiev rc = napi_gro_receive(&wil->napi_rx, skb); 807c42da999SVladimir Kondratiev wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n", 808c42da999SVladimir Kondratiev len, gro_res_str[rc]); 809c42da999SVladimir Kondratiev } 81058527421SVladimir Kondratiev stats: 811c42da999SVladimir Kondratiev /* statistics. rc set to GRO_NORMAL for AP bridging */ 812b5998e6aSVladimir Kondratiev if (unlikely(rc == GRO_DROP)) { 813b5998e6aSVladimir Kondratiev ndev->stats.rx_dropped++; 814b5998e6aSVladimir Kondratiev stats->rx_dropped++; 815b5998e6aSVladimir Kondratiev wil_dbg_txrx(wil, "Rx drop %d bytes\n", len); 816b5998e6aSVladimir Kondratiev } else { 8172be7d22fSVladimir Kondratiev ndev->stats.rx_packets++; 818c8b78b5fSVladimir Kondratiev stats->rx_packets++; 8192be7d22fSVladimir Kondratiev ndev->stats.rx_bytes += len; 820c8b78b5fSVladimir Kondratiev stats->rx_bytes += len; 821c42da999SVladimir Kondratiev if (mcast) 822c42da999SVladimir Kondratiev ndev->stats.multicast++; 823194b482bSVladimir Kondratiev } 8242be7d22fSVladimir Kondratiev } 8252be7d22fSVladimir Kondratiev 8262be7d22fSVladimir Kondratiev /** 8272be7d22fSVladimir Kondratiev * Proceed all completed skb's from Rx VRING 8282be7d22fSVladimir Kondratiev * 829e0287c4aSVladimir Kondratiev * Safe to call from NAPI poll, i.e. softirq with interrupts enabled 8302be7d22fSVladimir Kondratiev */ 831e0287c4aSVladimir Kondratiev void wil_rx_handle(struct wil6210_priv *wil, int *quota) 8322be7d22fSVladimir Kondratiev { 833e00243faSLior David struct net_device *ndev = wil->main_ndev; 834e00243faSLior David struct wireless_dev *wdev = ndev->ieee80211_ptr; 83510590c6aSGidon Studinski struct wil_ring *v = &wil->ring_rx; 8362be7d22fSVladimir Kondratiev struct sk_buff *skb; 8372be7d22fSVladimir Kondratiev 83833c477fdSVladimir Kondratiev if (unlikely(!v->va)) { 8392be7d22fSVladimir Kondratiev wil_err(wil, "Rx IRQ while Rx not yet initialized\n"); 8402be7d22fSVladimir Kondratiev return; 8412be7d22fSVladimir Kondratiev } 842af3db60aSLazar Alexei wil_dbg_txrx(wil, "rx_handle\n"); 843e0287c4aSVladimir Kondratiev while ((*quota > 0) && (NULL != (skb = wil_vring_reap_rx(wil, v)))) { 844e0287c4aSVladimir Kondratiev (*quota)--; 8452be7d22fSVladimir Kondratiev 846e00243faSLior David /* monitor is currently supported on main interface only */ 847e00243faSLior David if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 8482be7d22fSVladimir Kondratiev skb->dev = ndev; 8492be7d22fSVladimir Kondratiev skb_reset_mac_header(skb); 8502be7d22fSVladimir Kondratiev skb->ip_summed = CHECKSUM_UNNECESSARY; 8512be7d22fSVladimir Kondratiev skb->pkt_type = PACKET_OTHERHOST; 8522be7d22fSVladimir Kondratiev skb->protocol = htons(ETH_P_802_2); 853b4490f42SVladimir Kondratiev wil_netif_rx_any(skb, ndev); 8542be7d22fSVladimir Kondratiev } else { 855b4490f42SVladimir Kondratiev wil_rx_reorder(wil, skb); 8562be7d22fSVladimir Kondratiev } 8572be7d22fSVladimir Kondratiev } 8582be7d22fSVladimir Kondratiev wil_rx_refill(wil, v->size); 8592be7d22fSVladimir Kondratiev } 8602be7d22fSVladimir Kondratiev 86152a45702SLior David static void wil_rx_buf_len_init(struct wil6210_priv *wil) 86252a45702SLior David { 86352a45702SLior David wil->rx_buf_len = rx_large_buf ? 86452a45702SLior David WIL_MAX_ETH_MTU : TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 86552a45702SLior David if (mtu_max > wil->rx_buf_len) { 86652a45702SLior David /* do not allow RX buffers to be smaller than mtu_max, for 86752a45702SLior David * backward compatibility (mtu_max parameter was also used 86852a45702SLior David * to support receiving large packets) 86952a45702SLior David */ 87052a45702SLior David wil_info(wil, "Override RX buffer to mtu_max(%d)\n", mtu_max); 87152a45702SLior David wil->rx_buf_len = mtu_max; 87252a45702SLior David } 87352a45702SLior David } 87452a45702SLior David 87561e5ec04SDedy Lansky static int wil_rx_init(struct wil6210_priv *wil, uint order) 8762be7d22fSVladimir Kondratiev { 87710590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_rx; 8782be7d22fSVladimir Kondratiev int rc; 8792be7d22fSVladimir Kondratiev 880af3db60aSLazar Alexei wil_dbg_misc(wil, "rx_init\n"); 8819cf10d62SVladimir Kondratiev 8828bf6adb9SVladimir Kondratiev if (vring->va) { 8838bf6adb9SVladimir Kondratiev wil_err(wil, "Rx ring already allocated\n"); 8848bf6adb9SVladimir Kondratiev return -EINVAL; 8858bf6adb9SVladimir Kondratiev } 8868bf6adb9SVladimir Kondratiev 88752a45702SLior David wil_rx_buf_len_init(wil); 88852a45702SLior David 88961e5ec04SDedy Lansky vring->size = 1 << order; 89096c93589SGidon Studinski vring->is_rx = true; 8912be7d22fSVladimir Kondratiev rc = wil_vring_alloc(wil, vring); 8922be7d22fSVladimir Kondratiev if (rc) 8932be7d22fSVladimir Kondratiev return rc; 8942be7d22fSVladimir Kondratiev 89547e19af9SVladimir Kondratiev rc = wmi_rx_chain_add(wil, vring); 8962be7d22fSVladimir Kondratiev if (rc) 8972be7d22fSVladimir Kondratiev goto err_free; 8982be7d22fSVladimir Kondratiev 8992be7d22fSVladimir Kondratiev rc = wil_rx_refill(wil, vring->size); 9002be7d22fSVladimir Kondratiev if (rc) 9012be7d22fSVladimir Kondratiev goto err_free; 9022be7d22fSVladimir Kondratiev 9032be7d22fSVladimir Kondratiev return 0; 9042be7d22fSVladimir Kondratiev err_free: 90596c93589SGidon Studinski wil_vring_free(wil, vring); 9062be7d22fSVladimir Kondratiev 9072be7d22fSVladimir Kondratiev return rc; 9082be7d22fSVladimir Kondratiev } 9092be7d22fSVladimir Kondratiev 91096c93589SGidon Studinski static void wil_rx_fini(struct wil6210_priv *wil) 9112be7d22fSVladimir Kondratiev { 91210590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_rx; 9132be7d22fSVladimir Kondratiev 914af3db60aSLazar Alexei wil_dbg_misc(wil, "rx_fini\n"); 9159cf10d62SVladimir Kondratiev 9162acb4220SVladimir Kondratiev if (vring->va) 91796c93589SGidon Studinski wil_vring_free(wil, vring); 9182be7d22fSVladimir Kondratiev } 9192be7d22fSVladimir Kondratiev 9209202d7b6SMaya Erez static int wil_tx_desc_map(union wil_tx_desc *desc, dma_addr_t pa, 9219202d7b6SMaya Erez u32 len, int vring_index) 9229202d7b6SMaya Erez { 9239202d7b6SMaya Erez struct vring_tx_desc *d = &desc->legacy; 9249202d7b6SMaya Erez 9259202d7b6SMaya Erez wil_desc_addr_set(&d->dma.addr, pa); 9269202d7b6SMaya Erez d->dma.ip_length = 0; 9279202d7b6SMaya Erez /* 0..6: mac_length; 7:ip_version 0-IP6 1-IP4*/ 9289202d7b6SMaya Erez d->dma.b11 = 0/*14 | BIT(7)*/; 9299202d7b6SMaya Erez d->dma.error = 0; 9309202d7b6SMaya Erez d->dma.status = 0; /* BIT(0) should be 0 for HW_OWNED */ 9319202d7b6SMaya Erez d->dma.length = cpu_to_le16((u16)len); 9329202d7b6SMaya Erez d->dma.d0 = (vring_index << DMA_CFG_DESC_TX_0_QID_POS); 9339202d7b6SMaya Erez d->mac.d[0] = 0; 9349202d7b6SMaya Erez d->mac.d[1] = 0; 9359202d7b6SMaya Erez d->mac.d[2] = 0; 9369202d7b6SMaya Erez d->mac.ucode_cmd = 0; 9379202d7b6SMaya Erez /* translation type: 0 - bypass; 1 - 802.3; 2 - native wifi */ 9389202d7b6SMaya Erez d->mac.d[2] = BIT(MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_POS) | 9399202d7b6SMaya Erez (1 << MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_POS); 9409202d7b6SMaya Erez 9419202d7b6SMaya Erez return 0; 9429202d7b6SMaya Erez } 9439202d7b6SMaya Erez 94496c93589SGidon Studinski void wil_tx_data_init(struct wil_ring_tx_data *txdata) 945875e9439SMaya Erez { 946875e9439SMaya Erez spin_lock_bh(&txdata->lock); 947875e9439SMaya Erez txdata->dot1x_open = 0; 948875e9439SMaya Erez txdata->enabled = 0; 949875e9439SMaya Erez txdata->idle = 0; 950875e9439SMaya Erez txdata->last_idle = 0; 951875e9439SMaya Erez txdata->begin = 0; 952875e9439SMaya Erez txdata->agg_wsize = 0; 953875e9439SMaya Erez txdata->agg_timeout = 0; 954875e9439SMaya Erez txdata->agg_amsdu = 0; 955875e9439SMaya Erez txdata->addba_in_progress = false; 956e00243faSLior David txdata->mid = U8_MAX; 957875e9439SMaya Erez spin_unlock_bh(&txdata->lock); 958875e9439SMaya Erez } 959875e9439SMaya Erez 96096c93589SGidon Studinski static int wil_vring_init_tx(struct wil6210_vif *vif, int id, int size, 9612be7d22fSVladimir Kondratiev int cid, int tid) 9622be7d22fSVladimir Kondratiev { 963e00243faSLior David struct wil6210_priv *wil = vif_to_wil(vif); 9642be7d22fSVladimir Kondratiev int rc; 9652be7d22fSVladimir Kondratiev struct wmi_vring_cfg_cmd cmd = { 9662be7d22fSVladimir Kondratiev .action = cpu_to_le32(WMI_VRING_CMD_ADD), 9672be7d22fSVladimir Kondratiev .vring_cfg = { 9682be7d22fSVladimir Kondratiev .tx_sw_ring = { 9699a06bec9SVladimir Kondratiev .max_mpdu_size = 970c44690a1SVladimir Kondratiev cpu_to_le16(wil_mtu2macbuf(mtu_max)), 971b5d98e9dSVladimir Kondratiev .ring_size = cpu_to_le16(size), 9722be7d22fSVladimir Kondratiev }, 9732be7d22fSVladimir Kondratiev .ringid = id, 974a70abea5SVladimir Kondratiev .cidxtid = mk_cidxtid(cid, tid), 9752be7d22fSVladimir Kondratiev .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, 9762be7d22fSVladimir Kondratiev .mac_ctrl = 0, 9772be7d22fSVladimir Kondratiev .to_resolution = 0, 9783277213fSVladimir Kondratiev .agg_max_wsize = 0, 9792be7d22fSVladimir Kondratiev .schd_params = { 9802be7d22fSVladimir Kondratiev .priority = cpu_to_le16(0), 9812be7d22fSVladimir Kondratiev .timeslot_us = cpu_to_le16(0xfff), 9822be7d22fSVladimir Kondratiev }, 9832be7d22fSVladimir Kondratiev }, 9842be7d22fSVladimir Kondratiev }; 9852be7d22fSVladimir Kondratiev struct { 986b874ddecSLior David struct wmi_cmd_hdr wmi; 9872be7d22fSVladimir Kondratiev struct wmi_vring_cfg_done_event cmd; 988807b0860SAlexei Avshalom Lazar } __packed reply = { 989807b0860SAlexei Avshalom Lazar .cmd = {.status = WMI_FW_STATUS_FAILURE}, 990807b0860SAlexei Avshalom Lazar }; 99110590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[id]; 99210590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[id]; 9932be7d22fSVladimir Kondratiev 994af3db60aSLazar Alexei wil_dbg_misc(wil, "vring_init_tx: max_mpdu_size %d\n", 995e0106adaSVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.max_mpdu_size); 9969b1ba7b2SVladimir Kondratiev lockdep_assert_held(&wil->mutex); 9979cf10d62SVladimir Kondratiev 9982be7d22fSVladimir Kondratiev if (vring->va) { 9992be7d22fSVladimir Kondratiev wil_err(wil, "Tx ring [%d] already allocated\n", id); 10002be7d22fSVladimir Kondratiev rc = -EINVAL; 10012be7d22fSVladimir Kondratiev goto out; 10022be7d22fSVladimir Kondratiev } 10032be7d22fSVladimir Kondratiev 1004875e9439SMaya Erez wil_tx_data_init(txdata); 100596c93589SGidon Studinski vring->is_rx = false; 10062be7d22fSVladimir Kondratiev vring->size = size; 10072be7d22fSVladimir Kondratiev rc = wil_vring_alloc(wil, vring); 10082be7d22fSVladimir Kondratiev if (rc) 10092be7d22fSVladimir Kondratiev goto out; 10102be7d22fSVladimir Kondratiev 101110590c6aSGidon Studinski wil->ring2cid_tid[id][0] = cid; 101210590c6aSGidon Studinski wil->ring2cid_tid[id][1] = tid; 101393ae6d49SVladimir Kondratiev 10142be7d22fSVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); 10152be7d22fSVladimir Kondratiev 1016e00243faSLior David if (!vif->privacy) 1017230d8442SVladimir Kondratiev txdata->dot1x_open = true; 1018e00243faSLior David rc = wmi_call(wil, WMI_VRING_CFG_CMDID, vif->mid, &cmd, sizeof(cmd), 10192be7d22fSVladimir Kondratiev WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); 10202be7d22fSVladimir Kondratiev if (rc) 10212be7d22fSVladimir Kondratiev goto out_free; 10222be7d22fSVladimir Kondratiev 1023b8023177SVladimir Kondratiev if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { 10242be7d22fSVladimir Kondratiev wil_err(wil, "Tx config failed, status 0x%02x\n", 10252be7d22fSVladimir Kondratiev reply.cmd.status); 1026c331997bSVladimir Kondratiev rc = -EINVAL; 10272be7d22fSVladimir Kondratiev goto out_free; 10282be7d22fSVladimir Kondratiev } 10292be7d22fSVladimir Kondratiev 1030dc90506fSMaya Erez spin_lock_bh(&txdata->lock); 1031dc90506fSMaya Erez vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); 1032e00243faSLior David txdata->mid = vif->mid; 1033097638a0SVladimir Kondratiev txdata->enabled = 1; 1034dc90506fSMaya Erez spin_unlock_bh(&txdata->lock); 1035dc90506fSMaya Erez 1036230d8442SVladimir Kondratiev if (txdata->dot1x_open && (agg_wsize >= 0)) 10373a3def8dSVladimir Kondratiev wil_addba_tx_request(wil, id, agg_wsize); 1038097638a0SVladimir Kondratiev 10392be7d22fSVladimir Kondratiev return 0; 10402be7d22fSVladimir Kondratiev out_free: 1041875e9439SMaya Erez spin_lock_bh(&txdata->lock); 1042230d8442SVladimir Kondratiev txdata->dot1x_open = false; 1043230d8442SVladimir Kondratiev txdata->enabled = 0; 1044875e9439SMaya Erez spin_unlock_bh(&txdata->lock); 104596c93589SGidon Studinski wil_vring_free(wil, vring); 104610590c6aSGidon Studinski wil->ring2cid_tid[id][0] = WIL6210_MAX_CID; 104710590c6aSGidon Studinski wil->ring2cid_tid[id][1] = 0; 10480916d9f2SMaya Erez 10492be7d22fSVladimir Kondratiev out: 10502be7d22fSVladimir Kondratiev 10512be7d22fSVladimir Kondratiev return rc; 10522be7d22fSVladimir Kondratiev } 10532be7d22fSVladimir Kondratiev 1054b9010f10SAhmad Masri static int wil_tx_vring_modify(struct wil6210_vif *vif, int ring_id, int cid, 1055b9010f10SAhmad Masri int tid) 1056b9010f10SAhmad Masri { 1057b9010f10SAhmad Masri struct wil6210_priv *wil = vif_to_wil(vif); 1058b9010f10SAhmad Masri int rc; 1059b9010f10SAhmad Masri struct wmi_vring_cfg_cmd cmd = { 1060b9010f10SAhmad Masri .action = cpu_to_le32(WMI_VRING_CMD_MODIFY), 1061b9010f10SAhmad Masri .vring_cfg = { 1062b9010f10SAhmad Masri .tx_sw_ring = { 1063b9010f10SAhmad Masri .max_mpdu_size = 1064b9010f10SAhmad Masri cpu_to_le16(wil_mtu2macbuf(mtu_max)), 1065b9010f10SAhmad Masri .ring_size = 0, 1066b9010f10SAhmad Masri }, 1067b9010f10SAhmad Masri .ringid = ring_id, 1068b9010f10SAhmad Masri .cidxtid = mk_cidxtid(cid, tid), 1069b9010f10SAhmad Masri .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, 1070b9010f10SAhmad Masri .mac_ctrl = 0, 1071b9010f10SAhmad Masri .to_resolution = 0, 1072b9010f10SAhmad Masri .agg_max_wsize = 0, 1073b9010f10SAhmad Masri .schd_params = { 1074b9010f10SAhmad Masri .priority = cpu_to_le16(0), 1075b9010f10SAhmad Masri .timeslot_us = cpu_to_le16(0xfff), 1076b9010f10SAhmad Masri }, 1077b9010f10SAhmad Masri }, 1078b9010f10SAhmad Masri }; 1079b9010f10SAhmad Masri struct { 1080b9010f10SAhmad Masri struct wmi_cmd_hdr wmi; 1081b9010f10SAhmad Masri struct wmi_vring_cfg_done_event cmd; 1082b9010f10SAhmad Masri } __packed reply = { 1083b9010f10SAhmad Masri .cmd = {.status = WMI_FW_STATUS_FAILURE}, 1084b9010f10SAhmad Masri }; 1085b9010f10SAhmad Masri struct wil_ring *vring = &wil->ring_tx[ring_id]; 1086b9010f10SAhmad Masri struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ring_id]; 1087b9010f10SAhmad Masri 1088b9010f10SAhmad Masri wil_dbg_misc(wil, "vring_modify: ring %d cid %d tid %d\n", ring_id, 1089b9010f10SAhmad Masri cid, tid); 1090b9010f10SAhmad Masri lockdep_assert_held(&wil->mutex); 1091b9010f10SAhmad Masri 1092b9010f10SAhmad Masri if (!vring->va) { 1093b9010f10SAhmad Masri wil_err(wil, "Tx ring [%d] not allocated\n", ring_id); 1094b9010f10SAhmad Masri return -EINVAL; 1095b9010f10SAhmad Masri } 1096b9010f10SAhmad Masri 1097b9010f10SAhmad Masri if (wil->ring2cid_tid[ring_id][0] != cid || 1098b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][1] != tid) { 1099b9010f10SAhmad Masri wil_err(wil, "ring info does not match cid=%u tid=%u\n", 1100b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][0], 1101b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][1]); 1102b9010f10SAhmad Masri } 1103b9010f10SAhmad Masri 1104b9010f10SAhmad Masri cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); 1105b9010f10SAhmad Masri 1106b9010f10SAhmad Masri rc = wmi_call(wil, WMI_VRING_CFG_CMDID, vif->mid, &cmd, sizeof(cmd), 1107b9010f10SAhmad Masri WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); 1108b9010f10SAhmad Masri if (rc) 1109b9010f10SAhmad Masri goto fail; 1110b9010f10SAhmad Masri 1111b9010f10SAhmad Masri if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { 1112b9010f10SAhmad Masri wil_err(wil, "Tx modify failed, status 0x%02x\n", 1113b9010f10SAhmad Masri reply.cmd.status); 1114b9010f10SAhmad Masri rc = -EINVAL; 1115b9010f10SAhmad Masri goto fail; 1116b9010f10SAhmad Masri } 1117b9010f10SAhmad Masri 1118b9010f10SAhmad Masri /* set BA aggregation window size to 0 to force a new BA with the 1119b9010f10SAhmad Masri * new AP 1120b9010f10SAhmad Masri */ 1121b9010f10SAhmad Masri txdata->agg_wsize = 0; 1122b9010f10SAhmad Masri if (txdata->dot1x_open && agg_wsize >= 0) 1123b9010f10SAhmad Masri wil_addba_tx_request(wil, ring_id, agg_wsize); 1124b9010f10SAhmad Masri 1125b9010f10SAhmad Masri return 0; 1126b9010f10SAhmad Masri fail: 1127b9010f10SAhmad Masri spin_lock_bh(&txdata->lock); 1128b9010f10SAhmad Masri txdata->dot1x_open = false; 1129b9010f10SAhmad Masri txdata->enabled = 0; 1130b9010f10SAhmad Masri spin_unlock_bh(&txdata->lock); 1131b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][0] = WIL6210_MAX_CID; 1132b9010f10SAhmad Masri wil->ring2cid_tid[ring_id][1] = 0; 1133b9010f10SAhmad Masri return rc; 1134b9010f10SAhmad Masri } 1135b9010f10SAhmad Masri 1136e00243faSLior David int wil_vring_init_bcast(struct wil6210_vif *vif, int id, int size) 113741d6b093SVladimir Kondratiev { 1138e00243faSLior David struct wil6210_priv *wil = vif_to_wil(vif); 113941d6b093SVladimir Kondratiev int rc; 114041d6b093SVladimir Kondratiev struct wmi_bcast_vring_cfg_cmd cmd = { 114141d6b093SVladimir Kondratiev .action = cpu_to_le32(WMI_VRING_CMD_ADD), 114241d6b093SVladimir Kondratiev .vring_cfg = { 114341d6b093SVladimir Kondratiev .tx_sw_ring = { 114441d6b093SVladimir Kondratiev .max_mpdu_size = 114541d6b093SVladimir Kondratiev cpu_to_le16(wil_mtu2macbuf(mtu_max)), 114641d6b093SVladimir Kondratiev .ring_size = cpu_to_le16(size), 114741d6b093SVladimir Kondratiev }, 114841d6b093SVladimir Kondratiev .ringid = id, 114941d6b093SVladimir Kondratiev .encap_trans_type = WMI_VRING_ENC_TYPE_802_3, 115041d6b093SVladimir Kondratiev }, 115141d6b093SVladimir Kondratiev }; 115241d6b093SVladimir Kondratiev struct { 1153b874ddecSLior David struct wmi_cmd_hdr wmi; 115441d6b093SVladimir Kondratiev struct wmi_vring_cfg_done_event cmd; 1155807b0860SAlexei Avshalom Lazar } __packed reply = { 1156807b0860SAlexei Avshalom Lazar .cmd = {.status = WMI_FW_STATUS_FAILURE}, 1157807b0860SAlexei Avshalom Lazar }; 115810590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[id]; 115910590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[id]; 116041d6b093SVladimir Kondratiev 1161af3db60aSLazar Alexei wil_dbg_misc(wil, "vring_init_bcast: max_mpdu_size %d\n", 116241d6b093SVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.max_mpdu_size); 11639b1ba7b2SVladimir Kondratiev lockdep_assert_held(&wil->mutex); 116441d6b093SVladimir Kondratiev 116541d6b093SVladimir Kondratiev if (vring->va) { 116641d6b093SVladimir Kondratiev wil_err(wil, "Tx ring [%d] already allocated\n", id); 116741d6b093SVladimir Kondratiev rc = -EINVAL; 116841d6b093SVladimir Kondratiev goto out; 116941d6b093SVladimir Kondratiev } 117041d6b093SVladimir Kondratiev 1171875e9439SMaya Erez wil_tx_data_init(txdata); 117296c93589SGidon Studinski vring->is_rx = false; 117341d6b093SVladimir Kondratiev vring->size = size; 117441d6b093SVladimir Kondratiev rc = wil_vring_alloc(wil, vring); 117541d6b093SVladimir Kondratiev if (rc) 117641d6b093SVladimir Kondratiev goto out; 117741d6b093SVladimir Kondratiev 117810590c6aSGidon Studinski wil->ring2cid_tid[id][0] = WIL6210_MAX_CID; /* CID */ 117910590c6aSGidon Studinski wil->ring2cid_tid[id][1] = 0; /* TID */ 118041d6b093SVladimir Kondratiev 118141d6b093SVladimir Kondratiev cmd.vring_cfg.tx_sw_ring.ring_mem_base = cpu_to_le64(vring->pa); 118241d6b093SVladimir Kondratiev 1183e00243faSLior David if (!vif->privacy) 1184230d8442SVladimir Kondratiev txdata->dot1x_open = true; 1185e00243faSLior David rc = wmi_call(wil, WMI_BCAST_VRING_CFG_CMDID, vif->mid, 1186e00243faSLior David &cmd, sizeof(cmd), 118741d6b093SVladimir Kondratiev WMI_VRING_CFG_DONE_EVENTID, &reply, sizeof(reply), 100); 118841d6b093SVladimir Kondratiev if (rc) 118941d6b093SVladimir Kondratiev goto out_free; 119041d6b093SVladimir Kondratiev 119141d6b093SVladimir Kondratiev if (reply.cmd.status != WMI_FW_STATUS_SUCCESS) { 119241d6b093SVladimir Kondratiev wil_err(wil, "Tx config failed, status 0x%02x\n", 119341d6b093SVladimir Kondratiev reply.cmd.status); 119441d6b093SVladimir Kondratiev rc = -EINVAL; 119541d6b093SVladimir Kondratiev goto out_free; 119641d6b093SVladimir Kondratiev } 119741d6b093SVladimir Kondratiev 1198dc90506fSMaya Erez spin_lock_bh(&txdata->lock); 1199dc90506fSMaya Erez vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr); 1200e00243faSLior David txdata->mid = vif->mid; 120141d6b093SVladimir Kondratiev txdata->enabled = 1; 1202dc90506fSMaya Erez spin_unlock_bh(&txdata->lock); 120341d6b093SVladimir Kondratiev 120441d6b093SVladimir Kondratiev return 0; 120541d6b093SVladimir Kondratiev out_free: 1206875e9439SMaya Erez spin_lock_bh(&txdata->lock); 1207230d8442SVladimir Kondratiev txdata->enabled = 0; 1208230d8442SVladimir Kondratiev txdata->dot1x_open = false; 1209875e9439SMaya Erez spin_unlock_bh(&txdata->lock); 121096c93589SGidon Studinski wil_vring_free(wil, vring); 121141d6b093SVladimir Kondratiev out: 121241d6b093SVladimir Kondratiev 121341d6b093SVladimir Kondratiev return rc; 121441d6b093SVladimir Kondratiev } 121541d6b093SVladimir Kondratiev 121610590c6aSGidon Studinski static struct wil_ring *wil_find_tx_ucast(struct wil6210_priv *wil, 1217e00243faSLior David struct wil6210_vif *vif, 12182be7d22fSVladimir Kondratiev struct sk_buff *skb) 12192be7d22fSVladimir Kondratiev { 12203df2cd36SVladimir Kondratiev int i; 12213df2cd36SVladimir Kondratiev struct ethhdr *eth = (void *)skb->data; 1222e00243faSLior David int cid = wil_find_cid(wil, vif->mid, eth->h_dest); 122396c93589SGidon Studinski int min_ring_id = wil_get_min_tx_ring_id(wil); 12242be7d22fSVladimir Kondratiev 12253df2cd36SVladimir Kondratiev if (cid < 0) 12263df2cd36SVladimir Kondratiev return NULL; 12273df2cd36SVladimir Kondratiev 12283df2cd36SVladimir Kondratiev /* TODO: fix for multiple TID */ 122996c93589SGidon Studinski for (i = min_ring_id; i < ARRAY_SIZE(wil->ring2cid_tid); i++) { 123010590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 123110590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 1232230d8442SVladimir Kondratiev continue; 123310590c6aSGidon Studinski if (wil->ring2cid_tid[i][0] == cid) { 123410590c6aSGidon Studinski struct wil_ring *v = &wil->ring_tx[i]; 123510590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[i]; 12368fe59627SVladimir Kondratiev 1237af3db60aSLazar Alexei wil_dbg_txrx(wil, "find_tx_ucast: (%pM) -> [%d]\n", 1238af3db60aSLazar Alexei eth->h_dest, i); 1239b729aaf0SMaya Erez if (v->va && txdata->enabled) { 12402be7d22fSVladimir Kondratiev return v; 12413df2cd36SVladimir Kondratiev } else { 1242af3db60aSLazar Alexei wil_dbg_txrx(wil, 1243af3db60aSLazar Alexei "find_tx_ucast: vring[%d] not valid\n", 1244af3db60aSLazar Alexei i); 12453df2cd36SVladimir Kondratiev return NULL; 12463df2cd36SVladimir Kondratiev } 12473df2cd36SVladimir Kondratiev } 12483df2cd36SVladimir Kondratiev } 12492be7d22fSVladimir Kondratiev 12502be7d22fSVladimir Kondratiev return NULL; 12512be7d22fSVladimir Kondratiev } 12522be7d22fSVladimir Kondratiev 12539202d7b6SMaya Erez static int wil_tx_ring(struct wil6210_priv *wil, struct wil6210_vif *vif, 12549202d7b6SMaya Erez struct wil_ring *ring, struct sk_buff *skb); 125554ed90a8SVladimir Kondratiev 125610590c6aSGidon Studinski static struct wil_ring *wil_find_tx_ring_sta(struct wil6210_priv *wil, 1257e00243faSLior David struct wil6210_vif *vif, 125854ed90a8SVladimir Kondratiev struct sk_buff *skb) 125954ed90a8SVladimir Kondratiev { 126010590c6aSGidon Studinski struct wil_ring *ring; 126154ed90a8SVladimir Kondratiev int i; 126254ed90a8SVladimir Kondratiev u8 cid; 126310590c6aSGidon Studinski struct wil_ring_tx_data *txdata; 126496c93589SGidon Studinski int min_ring_id = wil_get_min_tx_ring_id(wil); 126554ed90a8SVladimir Kondratiev 126654ed90a8SVladimir Kondratiev /* In the STA mode, it is expected to have only 1 VRING 126754ed90a8SVladimir Kondratiev * for the AP we connected to. 1268230d8442SVladimir Kondratiev * find 1-st vring eligible for this skb and use it. 126954ed90a8SVladimir Kondratiev */ 127096c93589SGidon Studinski for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 127110590c6aSGidon Studinski ring = &wil->ring_tx[i]; 127210590c6aSGidon Studinski txdata = &wil->ring_tx_data[i]; 127310590c6aSGidon Studinski if (!ring->va || !txdata->enabled || txdata->mid != vif->mid) 127454ed90a8SVladimir Kondratiev continue; 127554ed90a8SVladimir Kondratiev 127610590c6aSGidon Studinski cid = wil->ring2cid_tid[i][0]; 127741d6b093SVladimir Kondratiev if (cid >= WIL6210_MAX_CID) /* skip BCAST */ 127841d6b093SVladimir Kondratiev continue; 127941d6b093SVladimir Kondratiev 128010590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 128110590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 1282230d8442SVladimir Kondratiev continue; 128354ed90a8SVladimir Kondratiev 128454ed90a8SVladimir Kondratiev wil_dbg_txrx(wil, "Tx -> ring %d\n", i); 128554ed90a8SVladimir Kondratiev 128610590c6aSGidon Studinski return ring; 128754ed90a8SVladimir Kondratiev } 128854ed90a8SVladimir Kondratiev 128910590c6aSGidon Studinski wil_dbg_txrx(wil, "Tx while no rings active?\n"); 129054ed90a8SVladimir Kondratiev 129154ed90a8SVladimir Kondratiev return NULL; 129254ed90a8SVladimir Kondratiev } 129354ed90a8SVladimir Kondratiev 129470812421SVladimir Kondratiev /* Use one of 2 strategies: 129570812421SVladimir Kondratiev * 129670812421SVladimir Kondratiev * 1. New (real broadcast): 129770812421SVladimir Kondratiev * use dedicated broadcast vring 129870812421SVladimir Kondratiev * 2. Old (pseudo-DMS): 129970812421SVladimir Kondratiev * Find 1-st vring and return it; 130070812421SVladimir Kondratiev * duplicate skb and send it to other active vrings; 130170812421SVladimir Kondratiev * in all cases override dest address to unicast peer's address 130270812421SVladimir Kondratiev * Use old strategy when new is not supported yet: 130370812421SVladimir Kondratiev * - for PBSS 130470812421SVladimir Kondratiev */ 130510590c6aSGidon Studinski static struct wil_ring *wil_find_tx_bcast_1(struct wil6210_priv *wil, 1306e00243faSLior David struct wil6210_vif *vif, 1307fb3cac57SVladimir Kondratiev struct sk_buff *skb) 1308fb3cac57SVladimir Kondratiev { 130910590c6aSGidon Studinski struct wil_ring *v; 131010590c6aSGidon Studinski struct wil_ring_tx_data *txdata; 131110590c6aSGidon Studinski int i = vif->bcast_ring; 1312fb3cac57SVladimir Kondratiev 131341d6b093SVladimir Kondratiev if (i < 0) 131441d6b093SVladimir Kondratiev return NULL; 131510590c6aSGidon Studinski v = &wil->ring_tx[i]; 131610590c6aSGidon Studinski txdata = &wil->ring_tx_data[i]; 1317b729aaf0SMaya Erez if (!v->va || !txdata->enabled) 1318fb3cac57SVladimir Kondratiev return NULL; 131910590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 132010590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 1321230d8442SVladimir Kondratiev return NULL; 1322fb3cac57SVladimir Kondratiev 1323fb3cac57SVladimir Kondratiev return v; 1324fb3cac57SVladimir Kondratiev } 1325fb3cac57SVladimir Kondratiev 132670812421SVladimir Kondratiev static void wil_set_da_for_vring(struct wil6210_priv *wil, 132770812421SVladimir Kondratiev struct sk_buff *skb, int vring_index) 132870812421SVladimir Kondratiev { 132970812421SVladimir Kondratiev struct ethhdr *eth = (void *)skb->data; 133010590c6aSGidon Studinski int cid = wil->ring2cid_tid[vring_index][0]; 133170812421SVladimir Kondratiev 133270812421SVladimir Kondratiev ether_addr_copy(eth->h_dest, wil->sta[cid].addr); 133370812421SVladimir Kondratiev } 133470812421SVladimir Kondratiev 133510590c6aSGidon Studinski static struct wil_ring *wil_find_tx_bcast_2(struct wil6210_priv *wil, 1336e00243faSLior David struct wil6210_vif *vif, 133770812421SVladimir Kondratiev struct sk_buff *skb) 133870812421SVladimir Kondratiev { 133910590c6aSGidon Studinski struct wil_ring *v, *v2; 134070812421SVladimir Kondratiev struct sk_buff *skb2; 134170812421SVladimir Kondratiev int i; 134270812421SVladimir Kondratiev u8 cid; 134370812421SVladimir Kondratiev struct ethhdr *eth = (void *)skb->data; 134470812421SVladimir Kondratiev char *src = eth->h_source; 134510590c6aSGidon Studinski struct wil_ring_tx_data *txdata, *txdata2; 134696c93589SGidon Studinski int min_ring_id = wil_get_min_tx_ring_id(wil); 134770812421SVladimir Kondratiev 134870812421SVladimir Kondratiev /* find 1-st vring eligible for data */ 134996c93589SGidon Studinski for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 135010590c6aSGidon Studinski v = &wil->ring_tx[i]; 135110590c6aSGidon Studinski txdata = &wil->ring_tx_data[i]; 1352e00243faSLior David if (!v->va || !txdata->enabled || txdata->mid != vif->mid) 135370812421SVladimir Kondratiev continue; 135470812421SVladimir Kondratiev 135510590c6aSGidon Studinski cid = wil->ring2cid_tid[i][0]; 135670812421SVladimir Kondratiev if (cid >= WIL6210_MAX_CID) /* skip BCAST */ 135770812421SVladimir Kondratiev continue; 135810590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 135910590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 136070812421SVladimir Kondratiev continue; 136170812421SVladimir Kondratiev 136270812421SVladimir Kondratiev /* don't Tx back to source when re-routing Rx->Tx at the AP */ 136370812421SVladimir Kondratiev if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) 136470812421SVladimir Kondratiev continue; 136570812421SVladimir Kondratiev 136670812421SVladimir Kondratiev goto found; 136770812421SVladimir Kondratiev } 136870812421SVladimir Kondratiev 136970812421SVladimir Kondratiev wil_dbg_txrx(wil, "Tx while no vrings active?\n"); 137070812421SVladimir Kondratiev 137170812421SVladimir Kondratiev return NULL; 137270812421SVladimir Kondratiev 137370812421SVladimir Kondratiev found: 137470812421SVladimir Kondratiev wil_dbg_txrx(wil, "BCAST -> ring %d\n", i); 137570812421SVladimir Kondratiev wil_set_da_for_vring(wil, skb, i); 137670812421SVladimir Kondratiev 137770812421SVladimir Kondratiev /* find other active vrings and duplicate skb for each */ 137870812421SVladimir Kondratiev for (i++; i < WIL6210_MAX_TX_RINGS; i++) { 137910590c6aSGidon Studinski v2 = &wil->ring_tx[i]; 138010590c6aSGidon Studinski txdata2 = &wil->ring_tx_data[i]; 1381e00243faSLior David if (!v2->va || txdata2->mid != vif->mid) 138270812421SVladimir Kondratiev continue; 138310590c6aSGidon Studinski cid = wil->ring2cid_tid[i][0]; 138470812421SVladimir Kondratiev if (cid >= WIL6210_MAX_CID) /* skip BCAST */ 138570812421SVladimir Kondratiev continue; 138610590c6aSGidon Studinski if (!wil->ring_tx_data[i].dot1x_open && 138710590c6aSGidon Studinski skb->protocol != cpu_to_be16(ETH_P_PAE)) 138870812421SVladimir Kondratiev continue; 138970812421SVladimir Kondratiev 139070812421SVladimir Kondratiev if (0 == memcmp(wil->sta[cid].addr, src, ETH_ALEN)) 139170812421SVladimir Kondratiev continue; 139270812421SVladimir Kondratiev 139370812421SVladimir Kondratiev skb2 = skb_copy(skb, GFP_ATOMIC); 139470812421SVladimir Kondratiev if (skb2) { 139570812421SVladimir Kondratiev wil_dbg_txrx(wil, "BCAST DUP -> ring %d\n", i); 139670812421SVladimir Kondratiev wil_set_da_for_vring(wil, skb2, i); 13979202d7b6SMaya Erez wil_tx_ring(wil, vif, v2, skb2); 139866449740SLior David /* successful call to wil_tx_ring takes skb2 ref */ 139966449740SLior David dev_kfree_skb_any(skb2); 140070812421SVladimir Kondratiev } else { 140170812421SVladimir Kondratiev wil_err(wil, "skb_copy failed\n"); 140270812421SVladimir Kondratiev } 140370812421SVladimir Kondratiev } 140470812421SVladimir Kondratiev 140570812421SVladimir Kondratiev return v; 140670812421SVladimir Kondratiev } 140770812421SVladimir Kondratiev 1408c236658fSVladimir Kondratiev static inline 1409c236658fSVladimir Kondratiev void wil_tx_desc_set_nr_frags(struct vring_tx_desc *d, int nr_frags) 1410c236658fSVladimir Kondratiev { 14113d4bde15SVladimir Kondratiev d->mac.d[2] |= (nr_frags << MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_POS); 1412c236658fSVladimir Kondratiev } 1413c236658fSVladimir Kondratiev 14143d4bde15SVladimir Kondratiev /** 14153d4bde15SVladimir Kondratiev * Sets the descriptor @d up for csum and/or TSO offloading. The corresponding 14163d4bde15SVladimir Kondratiev * @skb is used to obtain the protocol and headers length. 14173d4bde15SVladimir Kondratiev * @tso_desc_type is a descriptor type for TSO: 0 - a header, 1 - first data, 14183d4bde15SVladimir Kondratiev * 2 - middle, 3 - last descriptor. 14193d4bde15SVladimir Kondratiev */ 14203d4bde15SVladimir Kondratiev 14213d4bde15SVladimir Kondratiev static void wil_tx_desc_offload_setup_tso(struct vring_tx_desc *d, 14223d4bde15SVladimir Kondratiev struct sk_buff *skb, 14233d4bde15SVladimir Kondratiev int tso_desc_type, bool is_ipv4, 14243d4bde15SVladimir Kondratiev int tcp_hdr_len, int skb_net_hdr_len) 1425504937d4SKirshenbaum Erez { 14263d4bde15SVladimir Kondratiev d->dma.b11 = ETH_HLEN; /* MAC header length */ 14273d4bde15SVladimir Kondratiev d->dma.b11 |= is_ipv4 << DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS; 14283d4bde15SVladimir Kondratiev 14293d4bde15SVladimir Kondratiev d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); 14303d4bde15SVladimir Kondratiev /* L4 header len: TCP header length */ 14313d4bde15SVladimir Kondratiev d->dma.d0 |= (tcp_hdr_len & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); 14323d4bde15SVladimir Kondratiev 14333d4bde15SVladimir Kondratiev /* Setup TSO: bit and desc type */ 14343d4bde15SVladimir Kondratiev d->dma.d0 |= (BIT(DMA_CFG_DESC_TX_0_TCP_SEG_EN_POS)) | 14353d4bde15SVladimir Kondratiev (tso_desc_type << DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS); 14363d4bde15SVladimir Kondratiev d->dma.d0 |= (is_ipv4 << DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_POS); 14373d4bde15SVladimir Kondratiev 14383d4bde15SVladimir Kondratiev d->dma.ip_length = skb_net_hdr_len; 14393d4bde15SVladimir Kondratiev /* Enable TCP/UDP checksum */ 14403d4bde15SVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); 14413d4bde15SVladimir Kondratiev /* Calculate pseudo-header */ 14423d4bde15SVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); 14433d4bde15SVladimir Kondratiev } 14443d4bde15SVladimir Kondratiev 14453d4bde15SVladimir Kondratiev /** 14463d4bde15SVladimir Kondratiev * Sets the descriptor @d up for csum. The corresponding 14473d4bde15SVladimir Kondratiev * @skb is used to obtain the protocol and headers length. 14483d4bde15SVladimir Kondratiev * Returns the protocol: 0 - not TCP, 1 - TCPv4, 2 - TCPv6. 14493d4bde15SVladimir Kondratiev * Note, if d==NULL, the function only returns the protocol result. 14503d4bde15SVladimir Kondratiev * 14513d4bde15SVladimir Kondratiev * It is very similar to previous wil_tx_desc_offload_setup_tso. This 14523d4bde15SVladimir Kondratiev * is "if unrolling" to optimize the critical path. 14533d4bde15SVladimir Kondratiev */ 14543d4bde15SVladimir Kondratiev 14553d4bde15SVladimir Kondratiev static int wil_tx_desc_offload_setup(struct vring_tx_desc *d, 14563d4bde15SVladimir Kondratiev struct sk_buff *skb){ 1457504937d4SKirshenbaum Erez int protocol; 1458504937d4SKirshenbaum Erez 1459504937d4SKirshenbaum Erez if (skb->ip_summed != CHECKSUM_PARTIAL) 1460504937d4SKirshenbaum Erez return 0; 1461504937d4SKirshenbaum Erez 1462df2d08eeSVladimir Kondratiev d->dma.b11 = ETH_HLEN; /* MAC header length */ 1463df2d08eeSVladimir Kondratiev 1464504937d4SKirshenbaum Erez switch (skb->protocol) { 1465504937d4SKirshenbaum Erez case cpu_to_be16(ETH_P_IP): 1466504937d4SKirshenbaum Erez protocol = ip_hdr(skb)->protocol; 1467df2d08eeSVladimir Kondratiev d->dma.b11 |= BIT(DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS); 1468504937d4SKirshenbaum Erez break; 1469504937d4SKirshenbaum Erez case cpu_to_be16(ETH_P_IPV6): 1470504937d4SKirshenbaum Erez protocol = ipv6_hdr(skb)->nexthdr; 1471504937d4SKirshenbaum Erez break; 1472504937d4SKirshenbaum Erez default: 1473504937d4SKirshenbaum Erez return -EINVAL; 1474504937d4SKirshenbaum Erez } 1475504937d4SKirshenbaum Erez 1476504937d4SKirshenbaum Erez switch (protocol) { 1477504937d4SKirshenbaum Erez case IPPROTO_TCP: 1478504937d4SKirshenbaum Erez d->dma.d0 |= (2 << DMA_CFG_DESC_TX_0_L4_TYPE_POS); 1479504937d4SKirshenbaum Erez /* L4 header len: TCP header length */ 1480504937d4SKirshenbaum Erez d->dma.d0 |= 1481504937d4SKirshenbaum Erez (tcp_hdrlen(skb) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); 1482504937d4SKirshenbaum Erez break; 1483504937d4SKirshenbaum Erez case IPPROTO_UDP: 1484504937d4SKirshenbaum Erez /* L4 header len: UDP header length */ 1485504937d4SKirshenbaum Erez d->dma.d0 |= 1486504937d4SKirshenbaum Erez (sizeof(struct udphdr) & DMA_CFG_DESC_TX_0_L4_LENGTH_MSK); 1487504937d4SKirshenbaum Erez break; 1488504937d4SKirshenbaum Erez default: 1489504937d4SKirshenbaum Erez return -EINVAL; 1490504937d4SKirshenbaum Erez } 1491504937d4SKirshenbaum Erez 1492504937d4SKirshenbaum Erez d->dma.ip_length = skb_network_header_len(skb); 1493504937d4SKirshenbaum Erez /* Enable TCP/UDP checksum */ 1494504937d4SKirshenbaum Erez d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS); 1495504937d4SKirshenbaum Erez /* Calculate pseudo-header */ 1496504937d4SKirshenbaum Erez d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS); 1497504937d4SKirshenbaum Erez 1498504937d4SKirshenbaum Erez return 0; 1499504937d4SKirshenbaum Erez } 1500504937d4SKirshenbaum Erez 15013d4bde15SVladimir Kondratiev static inline void wil_tx_last_desc(struct vring_tx_desc *d) 15023d4bde15SVladimir Kondratiev { 15033d4bde15SVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS) | 15043d4bde15SVladimir Kondratiev BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS) | 15053d4bde15SVladimir Kondratiev BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS); 15063d4bde15SVladimir Kondratiev } 15073d4bde15SVladimir Kondratiev 15083d4bde15SVladimir Kondratiev static inline void wil_set_tx_desc_last_tso(volatile struct vring_tx_desc *d) 15093d4bde15SVladimir Kondratiev { 15103d4bde15SVladimir Kondratiev d->dma.d0 |= wil_tso_type_lst << 15113d4bde15SVladimir Kondratiev DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS; 15123d4bde15SVladimir Kondratiev } 15133d4bde15SVladimir Kondratiev 1514e00243faSLior David static int __wil_tx_vring_tso(struct wil6210_priv *wil, struct wil6210_vif *vif, 151510590c6aSGidon Studinski struct wil_ring *vring, struct sk_buff *skb) 15163d4bde15SVladimir Kondratiev { 15173d4bde15SVladimir Kondratiev struct device *dev = wil_to_dev(wil); 15183d4bde15SVladimir Kondratiev 15193d4bde15SVladimir Kondratiev /* point to descriptors in shared memory */ 15203d4bde15SVladimir Kondratiev volatile struct vring_tx_desc *_desc = NULL, *_hdr_desc, 15213d4bde15SVladimir Kondratiev *_first_desc = NULL; 15223d4bde15SVladimir Kondratiev 15233d4bde15SVladimir Kondratiev /* pointers to shadow descriptors */ 15243d4bde15SVladimir Kondratiev struct vring_tx_desc desc_mem, hdr_desc_mem, first_desc_mem, 15253d4bde15SVladimir Kondratiev *d = &hdr_desc_mem, *hdr_desc = &hdr_desc_mem, 15263d4bde15SVladimir Kondratiev *first_desc = &first_desc_mem; 15273d4bde15SVladimir Kondratiev 15283d4bde15SVladimir Kondratiev /* pointer to shadow descriptors' context */ 15293d4bde15SVladimir Kondratiev struct wil_ctx *hdr_ctx, *first_ctx = NULL; 15303d4bde15SVladimir Kondratiev 15313d4bde15SVladimir Kondratiev int descs_used = 0; /* total number of used descriptors */ 15323d4bde15SVladimir Kondratiev int sg_desc_cnt = 0; /* number of descriptors for current mss*/ 15333d4bde15SVladimir Kondratiev 15343d4bde15SVladimir Kondratiev u32 swhead = vring->swhead; 153510590c6aSGidon Studinski int used, avail = wil_ring_avail_tx(vring); 15363d4bde15SVladimir Kondratiev int nr_frags = skb_shinfo(skb)->nr_frags; 15373d4bde15SVladimir Kondratiev int min_desc_required = nr_frags + 1; 15383d4bde15SVladimir Kondratiev int mss = skb_shinfo(skb)->gso_size; /* payload size w/o headers */ 15393d4bde15SVladimir Kondratiev int f, len, hdrlen, headlen; 154010590c6aSGidon Studinski int vring_index = vring - wil->ring_tx; 154110590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[vring_index]; 15423d4bde15SVladimir Kondratiev uint i = swhead; 15433d4bde15SVladimir Kondratiev dma_addr_t pa; 15443d4bde15SVladimir Kondratiev const skb_frag_t *frag = NULL; 15453d4bde15SVladimir Kondratiev int rem_data = mss; 15463d4bde15SVladimir Kondratiev int lenmss; 15473d4bde15SVladimir Kondratiev int hdr_compensation_need = true; 15483d4bde15SVladimir Kondratiev int desc_tso_type = wil_tso_type_first; 15493d4bde15SVladimir Kondratiev bool is_ipv4; 15503d4bde15SVladimir Kondratiev int tcp_hdr_len; 15513d4bde15SVladimir Kondratiev int skb_net_hdr_len; 15523d4bde15SVladimir Kondratiev int gso_type; 1553e3d2ed94SHamad Kadmany int rc = -EINVAL; 15543d4bde15SVladimir Kondratiev 1555af3db60aSLazar Alexei wil_dbg_txrx(wil, "tx_vring_tso: %d bytes to vring %d\n", skb->len, 1556af3db60aSLazar Alexei vring_index); 15573d4bde15SVladimir Kondratiev 15583d4bde15SVladimir Kondratiev if (unlikely(!txdata->enabled)) 15593d4bde15SVladimir Kondratiev return -EINVAL; 15603d4bde15SVladimir Kondratiev 15613d4bde15SVladimir Kondratiev /* A typical page 4K is 3-4 payloads, we assume each fragment 15623d4bde15SVladimir Kondratiev * is a full payload, that's how min_desc_required has been 15633d4bde15SVladimir Kondratiev * calculated. In real we might need more or less descriptors, 15643d4bde15SVladimir Kondratiev * this is the initial check only. 15653d4bde15SVladimir Kondratiev */ 15663d4bde15SVladimir Kondratiev if (unlikely(avail < min_desc_required)) { 15673d4bde15SVladimir Kondratiev wil_err_ratelimited(wil, 15683d4bde15SVladimir Kondratiev "TSO: Tx ring[%2d] full. No space for %d fragments\n", 15693d4bde15SVladimir Kondratiev vring_index, min_desc_required); 15703d4bde15SVladimir Kondratiev return -ENOMEM; 15713d4bde15SVladimir Kondratiev } 15723d4bde15SVladimir Kondratiev 15733d4bde15SVladimir Kondratiev /* Header Length = MAC header len + IP header len + TCP header len*/ 15743d4bde15SVladimir Kondratiev hdrlen = ETH_HLEN + 15753d4bde15SVladimir Kondratiev (int)skb_network_header_len(skb) + 15763d4bde15SVladimir Kondratiev tcp_hdrlen(skb); 15773d4bde15SVladimir Kondratiev 15783d4bde15SVladimir Kondratiev gso_type = skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV6 | SKB_GSO_TCPV4); 15793d4bde15SVladimir Kondratiev switch (gso_type) { 15803d4bde15SVladimir Kondratiev case SKB_GSO_TCPV4: 15813d4bde15SVladimir Kondratiev /* TCP v4, zero out the IP length and IPv4 checksum fields 15823d4bde15SVladimir Kondratiev * as required by the offloading doc 15833d4bde15SVladimir Kondratiev */ 15843d4bde15SVladimir Kondratiev ip_hdr(skb)->tot_len = 0; 15853d4bde15SVladimir Kondratiev ip_hdr(skb)->check = 0; 15863d4bde15SVladimir Kondratiev is_ipv4 = true; 15873d4bde15SVladimir Kondratiev break; 15883d4bde15SVladimir Kondratiev case SKB_GSO_TCPV6: 15893d4bde15SVladimir Kondratiev /* TCP v6, zero out the payload length */ 15903d4bde15SVladimir Kondratiev ipv6_hdr(skb)->payload_len = 0; 15913d4bde15SVladimir Kondratiev is_ipv4 = false; 15923d4bde15SVladimir Kondratiev break; 15933d4bde15SVladimir Kondratiev default: 15943d4bde15SVladimir Kondratiev /* other than TCPv4 or TCPv6 types are not supported for TSO. 15953d4bde15SVladimir Kondratiev * It is also illegal for both to be set simultaneously 15963d4bde15SVladimir Kondratiev */ 15973d4bde15SVladimir Kondratiev return -EINVAL; 15983d4bde15SVladimir Kondratiev } 15993d4bde15SVladimir Kondratiev 16003d4bde15SVladimir Kondratiev if (skb->ip_summed != CHECKSUM_PARTIAL) 16013d4bde15SVladimir Kondratiev return -EINVAL; 16023d4bde15SVladimir Kondratiev 16033d4bde15SVladimir Kondratiev /* tcp header length and skb network header length are fixed for all 16043d4bde15SVladimir Kondratiev * packet's descriptors - read then once here 16053d4bde15SVladimir Kondratiev */ 16063d4bde15SVladimir Kondratiev tcp_hdr_len = tcp_hdrlen(skb); 16073d4bde15SVladimir Kondratiev skb_net_hdr_len = skb_network_header_len(skb); 16083d4bde15SVladimir Kondratiev 160910590c6aSGidon Studinski _hdr_desc = &vring->va[i].tx.legacy; 16103d4bde15SVladimir Kondratiev 16113d4bde15SVladimir Kondratiev pa = dma_map_single(dev, skb->data, hdrlen, DMA_TO_DEVICE); 16123d4bde15SVladimir Kondratiev if (unlikely(dma_mapping_error(dev, pa))) { 16133d4bde15SVladimir Kondratiev wil_err(wil, "TSO: Skb head DMA map error\n"); 16143d4bde15SVladimir Kondratiev goto err_exit; 16153d4bde15SVladimir Kondratiev } 16163d4bde15SVladimir Kondratiev 16179202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)hdr_desc, pa, 16189202d7b6SMaya Erez hdrlen, vring_index); 16193d4bde15SVladimir Kondratiev wil_tx_desc_offload_setup_tso(hdr_desc, skb, wil_tso_type_hdr, is_ipv4, 16203d4bde15SVladimir Kondratiev tcp_hdr_len, skb_net_hdr_len); 16213d4bde15SVladimir Kondratiev wil_tx_last_desc(hdr_desc); 16223d4bde15SVladimir Kondratiev 16233d4bde15SVladimir Kondratiev vring->ctx[i].mapped_as = wil_mapped_as_single; 16243d4bde15SVladimir Kondratiev hdr_ctx = &vring->ctx[i]; 16253d4bde15SVladimir Kondratiev 16263d4bde15SVladimir Kondratiev descs_used++; 16273d4bde15SVladimir Kondratiev headlen = skb_headlen(skb) - hdrlen; 16283d4bde15SVladimir Kondratiev 16293d4bde15SVladimir Kondratiev for (f = headlen ? -1 : 0; f < nr_frags; f++) { 16303d4bde15SVladimir Kondratiev if (headlen) { 16313d4bde15SVladimir Kondratiev len = headlen; 16323d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "TSO: process skb head, len %u\n", 16333d4bde15SVladimir Kondratiev len); 16343d4bde15SVladimir Kondratiev } else { 16353d4bde15SVladimir Kondratiev frag = &skb_shinfo(skb)->frags[f]; 16363d4bde15SVladimir Kondratiev len = frag->size; 16373d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "TSO: frag[%d]: len %u\n", f, len); 16383d4bde15SVladimir Kondratiev } 16393d4bde15SVladimir Kondratiev 16403d4bde15SVladimir Kondratiev while (len) { 16413d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, 16423d4bde15SVladimir Kondratiev "TSO: len %d, rem_data %d, descs_used %d\n", 16433d4bde15SVladimir Kondratiev len, rem_data, descs_used); 16443d4bde15SVladimir Kondratiev 16453d4bde15SVladimir Kondratiev if (descs_used == avail) { 1646e3d2ed94SHamad Kadmany wil_err_ratelimited(wil, "TSO: ring overflow\n"); 1647e3d2ed94SHamad Kadmany rc = -ENOMEM; 1648e3d2ed94SHamad Kadmany goto mem_error; 16493d4bde15SVladimir Kondratiev } 16503d4bde15SVladimir Kondratiev 16513d4bde15SVladimir Kondratiev lenmss = min_t(int, rem_data, len); 16523d4bde15SVladimir Kondratiev i = (swhead + descs_used) % vring->size; 16533d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "TSO: lenmss %d, i %d\n", lenmss, i); 16543d4bde15SVladimir Kondratiev 16553d4bde15SVladimir Kondratiev if (!headlen) { 16563d4bde15SVladimir Kondratiev pa = skb_frag_dma_map(dev, frag, 16573d4bde15SVladimir Kondratiev frag->size - len, lenmss, 16583d4bde15SVladimir Kondratiev DMA_TO_DEVICE); 16593d4bde15SVladimir Kondratiev vring->ctx[i].mapped_as = wil_mapped_as_page; 16603d4bde15SVladimir Kondratiev } else { 16613d4bde15SVladimir Kondratiev pa = dma_map_single(dev, 16623d4bde15SVladimir Kondratiev skb->data + 16633d4bde15SVladimir Kondratiev skb_headlen(skb) - headlen, 16643d4bde15SVladimir Kondratiev lenmss, 16653d4bde15SVladimir Kondratiev DMA_TO_DEVICE); 16663d4bde15SVladimir Kondratiev vring->ctx[i].mapped_as = wil_mapped_as_single; 16673d4bde15SVladimir Kondratiev headlen -= lenmss; 16683d4bde15SVladimir Kondratiev } 16693d4bde15SVladimir Kondratiev 1670e3d2ed94SHamad Kadmany if (unlikely(dma_mapping_error(dev, pa))) { 1671e3d2ed94SHamad Kadmany wil_err(wil, "TSO: DMA map page error\n"); 1672e3d2ed94SHamad Kadmany goto mem_error; 1673e3d2ed94SHamad Kadmany } 16743d4bde15SVladimir Kondratiev 167510590c6aSGidon Studinski _desc = &vring->va[i].tx.legacy; 16763d4bde15SVladimir Kondratiev 16773d4bde15SVladimir Kondratiev if (!_first_desc) { 16783d4bde15SVladimir Kondratiev _first_desc = _desc; 16793d4bde15SVladimir Kondratiev first_ctx = &vring->ctx[i]; 16803d4bde15SVladimir Kondratiev d = first_desc; 16813d4bde15SVladimir Kondratiev } else { 16823d4bde15SVladimir Kondratiev d = &desc_mem; 16833d4bde15SVladimir Kondratiev } 16843d4bde15SVladimir Kondratiev 16859202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)d, 16869202d7b6SMaya Erez pa, lenmss, vring_index); 16873d4bde15SVladimir Kondratiev wil_tx_desc_offload_setup_tso(d, skb, desc_tso_type, 16883d4bde15SVladimir Kondratiev is_ipv4, tcp_hdr_len, 16893d4bde15SVladimir Kondratiev skb_net_hdr_len); 16903d4bde15SVladimir Kondratiev 16913d4bde15SVladimir Kondratiev /* use tso_type_first only once */ 16923d4bde15SVladimir Kondratiev desc_tso_type = wil_tso_type_mid; 16933d4bde15SVladimir Kondratiev 16943d4bde15SVladimir Kondratiev descs_used++; /* desc used so far */ 16953d4bde15SVladimir Kondratiev sg_desc_cnt++; /* desc used for this segment */ 16963d4bde15SVladimir Kondratiev len -= lenmss; 16973d4bde15SVladimir Kondratiev rem_data -= lenmss; 16983d4bde15SVladimir Kondratiev 16993d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, 17003d4bde15SVladimir Kondratiev "TSO: len %d, rem_data %d, descs_used %d, sg_desc_cnt %d,\n", 17013d4bde15SVladimir Kondratiev len, rem_data, descs_used, sg_desc_cnt); 17023d4bde15SVladimir Kondratiev 17033d4bde15SVladimir Kondratiev /* Close the segment if reached mss size or last frag*/ 17043d4bde15SVladimir Kondratiev if (rem_data == 0 || (f == nr_frags - 1 && len == 0)) { 17053d4bde15SVladimir Kondratiev if (hdr_compensation_need) { 17063d4bde15SVladimir Kondratiev /* first segment include hdr desc for 17073d4bde15SVladimir Kondratiev * release 17083d4bde15SVladimir Kondratiev */ 17093d4bde15SVladimir Kondratiev hdr_ctx->nr_frags = sg_desc_cnt; 17103d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(first_desc, 17113d4bde15SVladimir Kondratiev sg_desc_cnt + 17123d4bde15SVladimir Kondratiev 1); 17133d4bde15SVladimir Kondratiev hdr_compensation_need = false; 17143d4bde15SVladimir Kondratiev } else { 17153d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(first_desc, 17163d4bde15SVladimir Kondratiev sg_desc_cnt); 17173d4bde15SVladimir Kondratiev } 17183d4bde15SVladimir Kondratiev first_ctx->nr_frags = sg_desc_cnt - 1; 17193d4bde15SVladimir Kondratiev 17203d4bde15SVladimir Kondratiev wil_tx_last_desc(d); 17213d4bde15SVladimir Kondratiev 17223d4bde15SVladimir Kondratiev /* first descriptor may also be the last 17233d4bde15SVladimir Kondratiev * for this mss - make sure not to copy 17243d4bde15SVladimir Kondratiev * it twice 17253d4bde15SVladimir Kondratiev */ 17263d4bde15SVladimir Kondratiev if (first_desc != d) 17273d4bde15SVladimir Kondratiev *_first_desc = *first_desc; 17283d4bde15SVladimir Kondratiev 17293d4bde15SVladimir Kondratiev /*last descriptor will be copied at the end 17303d4bde15SVladimir Kondratiev * of this TS processing 17313d4bde15SVladimir Kondratiev */ 17323d4bde15SVladimir Kondratiev if (f < nr_frags - 1 || len > 0) 17333d4bde15SVladimir Kondratiev *_desc = *d; 17343d4bde15SVladimir Kondratiev 17353d4bde15SVladimir Kondratiev rem_data = mss; 17363d4bde15SVladimir Kondratiev _first_desc = NULL; 17373d4bde15SVladimir Kondratiev sg_desc_cnt = 0; 17383d4bde15SVladimir Kondratiev } else if (first_desc != d) /* update mid descriptor */ 17393d4bde15SVladimir Kondratiev *_desc = *d; 17403d4bde15SVladimir Kondratiev } 17413d4bde15SVladimir Kondratiev } 17423d4bde15SVladimir Kondratiev 17433d4bde15SVladimir Kondratiev /* first descriptor may also be the last. 17443d4bde15SVladimir Kondratiev * in this case d pointer is invalid 17453d4bde15SVladimir Kondratiev */ 17463d4bde15SVladimir Kondratiev if (_first_desc == _desc) 17473d4bde15SVladimir Kondratiev d = first_desc; 17483d4bde15SVladimir Kondratiev 17493d4bde15SVladimir Kondratiev /* Last data descriptor */ 17503d4bde15SVladimir Kondratiev wil_set_tx_desc_last_tso(d); 17513d4bde15SVladimir Kondratiev *_desc = *d; 17523d4bde15SVladimir Kondratiev 17533d4bde15SVladimir Kondratiev /* Fill the total number of descriptors in first desc (hdr)*/ 17543d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(hdr_desc, descs_used); 17553d4bde15SVladimir Kondratiev *_hdr_desc = *hdr_desc; 17563d4bde15SVladimir Kondratiev 17573d4bde15SVladimir Kondratiev /* hold reference to skb 17583d4bde15SVladimir Kondratiev * to prevent skb release before accounting 17593d4bde15SVladimir Kondratiev * in case of immediate "tx done" 17603d4bde15SVladimir Kondratiev */ 17613d4bde15SVladimir Kondratiev vring->ctx[i].skb = skb_get(skb); 17623d4bde15SVladimir Kondratiev 17633d4bde15SVladimir Kondratiev /* performance monitoring */ 176410590c6aSGidon Studinski used = wil_ring_used_tx(vring); 176510590c6aSGidon Studinski if (wil_val_in_range(wil->ring_idle_trsh, 17663d4bde15SVladimir Kondratiev used, used + descs_used)) { 17673d4bde15SVladimir Kondratiev txdata->idle += get_cycles() - txdata->last_idle; 17683d4bde15SVladimir Kondratiev wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", 17693d4bde15SVladimir Kondratiev vring_index, used, used + descs_used); 17703d4bde15SVladimir Kondratiev } 17713d4bde15SVladimir Kondratiev 1772eb26cff1SMaya Erez /* Make sure to advance the head only after descriptor update is done. 1773eb26cff1SMaya Erez * This will prevent a race condition where the completion thread 1774eb26cff1SMaya Erez * will see the DU bit set from previous run and will handle the 1775eb26cff1SMaya Erez * skb before it was completed. 1776eb26cff1SMaya Erez */ 1777eb26cff1SMaya Erez wmb(); 1778eb26cff1SMaya Erez 17793d4bde15SVladimir Kondratiev /* advance swhead */ 178010590c6aSGidon Studinski wil_ring_advance_head(vring, descs_used); 1781e3d2ed94SHamad Kadmany wil_dbg_txrx(wil, "TSO: Tx swhead %d -> %d\n", swhead, vring->swhead); 17823d4bde15SVladimir Kondratiev 17833d4bde15SVladimir Kondratiev /* make sure all writes to descriptors (shared memory) are done before 17843d4bde15SVladimir Kondratiev * committing them to HW 17853d4bde15SVladimir Kondratiev */ 17863d4bde15SVladimir Kondratiev wmb(); 17873d4bde15SVladimir Kondratiev 1788a24a3d6aSDedy Lansky if (wil->tx_latency) 1789a24a3d6aSDedy Lansky *(ktime_t *)&skb->cb = ktime_get(); 1790a24a3d6aSDedy Lansky else 1791a24a3d6aSDedy Lansky memset(skb->cb, 0, sizeof(ktime_t)); 1792a24a3d6aSDedy Lansky 1793b9eeb512SVladimir Kondratiev wil_w(wil, vring->hwtail, vring->swhead); 17943d4bde15SVladimir Kondratiev return 0; 17953d4bde15SVladimir Kondratiev 1796e3d2ed94SHamad Kadmany mem_error: 17973d4bde15SVladimir Kondratiev while (descs_used > 0) { 17983d4bde15SVladimir Kondratiev struct wil_ctx *ctx; 17993d4bde15SVladimir Kondratiev 1800a1526f7eSMaya Erez i = (swhead + descs_used - 1) % vring->size; 180110590c6aSGidon Studinski d = (struct vring_tx_desc *)&vring->va[i].tx.legacy; 180210590c6aSGidon Studinski _desc = &vring->va[i].tx.legacy; 18033d4bde15SVladimir Kondratiev *d = *_desc; 18043d4bde15SVladimir Kondratiev _desc->dma.status = TX_DMA_STATUS_DU; 18053d4bde15SVladimir Kondratiev ctx = &vring->ctx[i]; 18069202d7b6SMaya Erez wil_txdesc_unmap(dev, (union wil_tx_desc *)d, ctx); 18073d4bde15SVladimir Kondratiev memset(ctx, 0, sizeof(*ctx)); 18083d4bde15SVladimir Kondratiev descs_used--; 18093d4bde15SVladimir Kondratiev } 18103d4bde15SVladimir Kondratiev err_exit: 1811e3d2ed94SHamad Kadmany return rc; 18123d4bde15SVladimir Kondratiev } 18133d4bde15SVladimir Kondratiev 18149202d7b6SMaya Erez static int __wil_tx_ring(struct wil6210_priv *wil, struct wil6210_vif *vif, 18159202d7b6SMaya Erez struct wil_ring *ring, struct sk_buff *skb) 18162be7d22fSVladimir Kondratiev { 18172be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 181868ada71eSVladimir Kondratiev struct vring_tx_desc dd, *d = ⅆ 181968ada71eSVladimir Kondratiev volatile struct vring_tx_desc *_d; 18209202d7b6SMaya Erez u32 swhead = ring->swhead; 18219202d7b6SMaya Erez int avail = wil_ring_avail_tx(ring); 18222be7d22fSVladimir Kondratiev int nr_frags = skb_shinfo(skb)->nr_frags; 1823504937d4SKirshenbaum Erez uint f = 0; 18249202d7b6SMaya Erez int ring_index = ring - wil->ring_tx; 18259202d7b6SMaya Erez struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ring_index]; 18262be7d22fSVladimir Kondratiev uint i = swhead; 18272be7d22fSVladimir Kondratiev dma_addr_t pa; 18280436fd9aSVladimir Shulman int used; 18299202d7b6SMaya Erez bool mcast = (ring_index == vif->bcast_ring); 183041d6b093SVladimir Kondratiev uint len = skb_headlen(skb); 18312be7d22fSVladimir Kondratiev 183210590c6aSGidon Studinski wil_dbg_txrx(wil, "tx_ring: %d bytes to ring %d, nr_frags %d\n", 18339202d7b6SMaya Erez skb->len, ring_index, nr_frags); 18342be7d22fSVladimir Kondratiev 18355933a06dSVladimir Kondratiev if (unlikely(!txdata->enabled)) 18365933a06dSVladimir Kondratiev return -EINVAL; 18375933a06dSVladimir Kondratiev 183833c477fdSVladimir Kondratiev if (unlikely(avail < 1 + nr_frags)) { 183970801e1bSVladimir Kondratiev wil_err_ratelimited(wil, 18405b29c573SVladimir Kondratiev "Tx ring[%2d] full. No space for %d fragments\n", 18419202d7b6SMaya Erez ring_index, 1 + nr_frags); 18422be7d22fSVladimir Kondratiev return -ENOMEM; 18432be7d22fSVladimir Kondratiev } 18449202d7b6SMaya Erez _d = &ring->va[i].tx.legacy; 18452be7d22fSVladimir Kondratiev 18468fe59627SVladimir Kondratiev pa = dma_map_single(dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); 18472be7d22fSVladimir Kondratiev 18489202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] skb %d bytes 0x%p -> %pad\n", ring_index, 18495b29c573SVladimir Kondratiev skb_headlen(skb), skb->data, &pa); 18507743882dSVladimir Kondratiev wil_hex_dump_txrx("Tx ", DUMP_PREFIX_OFFSET, 16, 1, 18512be7d22fSVladimir Kondratiev skb->data, skb_headlen(skb), false); 18522be7d22fSVladimir Kondratiev 18532be7d22fSVladimir Kondratiev if (unlikely(dma_mapping_error(dev, pa))) 18542be7d22fSVladimir Kondratiev return -EINVAL; 18559202d7b6SMaya Erez ring->ctx[i].mapped_as = wil_mapped_as_single; 18562be7d22fSVladimir Kondratiev /* 1-st segment */ 18579202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)d, pa, len, 18589202d7b6SMaya Erez ring_index); 185941d6b093SVladimir Kondratiev if (unlikely(mcast)) { 186041d6b093SVladimir Kondratiev d->mac.d[0] |= BIT(MAC_CFG_DESC_TX_0_MCS_EN_POS); /* MCS 0 */ 1861230d8442SVladimir Kondratiev if (unlikely(len > WIL_BCAST_MCS0_LIMIT)) /* set MCS 1 */ 186241d6b093SVladimir Kondratiev d->mac.d[0] |= (1 << MAC_CFG_DESC_TX_0_MCS_INDEX_POS); 186341d6b093SVladimir Kondratiev } 1864504937d4SKirshenbaum Erez /* Process TCP/UDP checksum offloading */ 18653d4bde15SVladimir Kondratiev if (unlikely(wil_tx_desc_offload_setup(d, skb))) { 18665b29c573SVladimir Kondratiev wil_err(wil, "Tx[%2d] Failed to set cksum, drop packet\n", 18679202d7b6SMaya Erez ring_index); 1868504937d4SKirshenbaum Erez goto dma_error; 1869504937d4SKirshenbaum Erez } 1870504937d4SKirshenbaum Erez 18719202d7b6SMaya Erez ring->ctx[i].nr_frags = nr_frags; 18723d4bde15SVladimir Kondratiev wil_tx_desc_set_nr_frags(d, nr_frags + 1); 187368ada71eSVladimir Kondratiev 18742be7d22fSVladimir Kondratiev /* middle segments */ 1875504937d4SKirshenbaum Erez for (; f < nr_frags; f++) { 18762be7d22fSVladimir Kondratiev const struct skb_frag_struct *frag = 18772be7d22fSVladimir Kondratiev &skb_shinfo(skb)->frags[f]; 18782be7d22fSVladimir Kondratiev int len = skb_frag_size(frag); 18798fe59627SVladimir Kondratiev 1880e59d16c0SVladimir Kondratiev *_d = *d; 18819202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", ring_index, i); 18825b29c573SVladimir Kondratiev wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, 18835b29c573SVladimir Kondratiev (const void *)d, sizeof(*d), false); 18849202d7b6SMaya Erez i = (swhead + f + 1) % ring->size; 18859202d7b6SMaya Erez _d = &ring->va[i].tx.legacy; 18862be7d22fSVladimir Kondratiev pa = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), 18872be7d22fSVladimir Kondratiev DMA_TO_DEVICE); 1888e3d2ed94SHamad Kadmany if (unlikely(dma_mapping_error(dev, pa))) { 1889e3d2ed94SHamad Kadmany wil_err(wil, "Tx[%2d] failed to map fragment\n", 18909202d7b6SMaya Erez ring_index); 18912be7d22fSVladimir Kondratiev goto dma_error; 1892e3d2ed94SHamad Kadmany } 18939202d7b6SMaya Erez ring->ctx[i].mapped_as = wil_mapped_as_page; 18949202d7b6SMaya Erez wil->txrx_ops.tx_desc_map((union wil_tx_desc *)d, 18959202d7b6SMaya Erez pa, len, ring_index); 1896c236658fSVladimir Kondratiev /* no need to check return code - 1897c236658fSVladimir Kondratiev * if it succeeded for 1-st descriptor, 1898c236658fSVladimir Kondratiev * it will succeed here too 1899c236658fSVladimir Kondratiev */ 19003d4bde15SVladimir Kondratiev wil_tx_desc_offload_setup(d, skb); 19012be7d22fSVladimir Kondratiev } 19022be7d22fSVladimir Kondratiev /* for the last seg only */ 19032be7d22fSVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS); 1904668b2bbdSKirshenbaum Erez d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS); 19052be7d22fSVladimir Kondratiev d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS); 190668ada71eSVladimir Kondratiev *_d = *d; 19079202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] desc[%4d]\n", ring_index, i); 19085b29c573SVladimir Kondratiev wil_hex_dump_txrx("TxD ", DUMP_PREFIX_NONE, 32, 4, 19095b29c573SVladimir Kondratiev (const void *)d, sizeof(*d), false); 19102be7d22fSVladimir Kondratiev 19116cdadd4dSVladimir Kondratiev /* hold reference to skb 19126cdadd4dSVladimir Kondratiev * to prevent skb release before accounting 19136cdadd4dSVladimir Kondratiev * in case of immediate "tx done" 19146cdadd4dSVladimir Kondratiev */ 19159202d7b6SMaya Erez ring->ctx[i].skb = skb_get(skb); 19166cdadd4dSVladimir Kondratiev 19170436fd9aSVladimir Shulman /* performance monitoring */ 19189202d7b6SMaya Erez used = wil_ring_used_tx(ring); 191910590c6aSGidon Studinski if (wil_val_in_range(wil->ring_idle_trsh, 19200436fd9aSVladimir Shulman used, used + nr_frags + 1)) { 19217c0acf86SVladimir Kondratiev txdata->idle += get_cycles() - txdata->last_idle; 19220436fd9aSVladimir Shulman wil_dbg_txrx(wil, "Ring[%2d] not idle %d -> %d\n", 19239202d7b6SMaya Erez ring_index, used, used + nr_frags + 1); 19240436fd9aSVladimir Shulman } 19257c0acf86SVladimir Kondratiev 1926eb26cff1SMaya Erez /* Make sure to advance the head only after descriptor update is done. 1927eb26cff1SMaya Erez * This will prevent a race condition where the completion thread 1928eb26cff1SMaya Erez * will see the DU bit set from previous run and will handle the 1929eb26cff1SMaya Erez * skb before it was completed. 1930eb26cff1SMaya Erez */ 1931eb26cff1SMaya Erez wmb(); 1932eb26cff1SMaya Erez 19332be7d22fSVladimir Kondratiev /* advance swhead */ 19349202d7b6SMaya Erez wil_ring_advance_head(ring, nr_frags + 1); 19359202d7b6SMaya Erez wil_dbg_txrx(wil, "Tx[%2d] swhead %d -> %d\n", ring_index, swhead, 19369202d7b6SMaya Erez ring->swhead); 19379202d7b6SMaya Erez trace_wil6210_tx(ring_index, swhead, skb->len, nr_frags); 19383d4bde15SVladimir Kondratiev 19393d4bde15SVladimir Kondratiev /* make sure all writes to descriptors (shared memory) are done before 19403d4bde15SVladimir Kondratiev * committing them to HW 19413d4bde15SVladimir Kondratiev */ 19423d4bde15SVladimir Kondratiev wmb(); 19433d4bde15SVladimir Kondratiev 1944a24a3d6aSDedy Lansky if (wil->tx_latency) 1945a24a3d6aSDedy Lansky *(ktime_t *)&skb->cb = ktime_get(); 1946a24a3d6aSDedy Lansky else 1947a24a3d6aSDedy Lansky memset(skb->cb, 0, sizeof(ktime_t)); 1948a24a3d6aSDedy Lansky 19499202d7b6SMaya Erez wil_w(wil, ring->hwtail, ring->swhead); 19502be7d22fSVladimir Kondratiev 19512be7d22fSVladimir Kondratiev return 0; 19522be7d22fSVladimir Kondratiev dma_error: 19532be7d22fSVladimir Kondratiev /* unmap what we have mapped */ 1954c2a146f6SVladimir Kondratiev nr_frags = f + 1; /* frags mapped + one for skb head */ 1955c2a146f6SVladimir Kondratiev for (f = 0; f < nr_frags; f++) { 1956c2a146f6SVladimir Kondratiev struct wil_ctx *ctx; 19577e594444SVladimir Kondratiev 19589202d7b6SMaya Erez i = (swhead + f) % ring->size; 19599202d7b6SMaya Erez ctx = &ring->ctx[i]; 19609202d7b6SMaya Erez _d = &ring->va[i].tx.legacy; 196168ada71eSVladimir Kondratiev *d = *_d; 196268ada71eSVladimir Kondratiev _d->dma.status = TX_DMA_STATUS_DU; 19639202d7b6SMaya Erez wil->txrx_ops.tx_desc_unmap(dev, 19649202d7b6SMaya Erez (union wil_tx_desc *)d, 19659202d7b6SMaya Erez ctx); 1966f88f113aSVladimir Kondratiev 1967f88f113aSVladimir Kondratiev memset(ctx, 0, sizeof(*ctx)); 19682be7d22fSVladimir Kondratiev } 19692be7d22fSVladimir Kondratiev 19702be7d22fSVladimir Kondratiev return -EINVAL; 19712be7d22fSVladimir Kondratiev } 19722be7d22fSVladimir Kondratiev 19739202d7b6SMaya Erez static int wil_tx_ring(struct wil6210_priv *wil, struct wil6210_vif *vif, 19749202d7b6SMaya Erez struct wil_ring *ring, struct sk_buff *skb) 19755933a06dSVladimir Kondratiev { 19769202d7b6SMaya Erez int ring_index = ring - wil->ring_tx; 197710590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ring_index]; 19785933a06dSVladimir Kondratiev int rc; 19795933a06dSVladimir Kondratiev 19805933a06dSVladimir Kondratiev spin_lock(&txdata->lock); 19813d4bde15SVladimir Kondratiev 1982fe9ee51eSMaya Erez if (test_bit(wil_status_suspending, wil->status) || 1983fe9ee51eSMaya Erez test_bit(wil_status_suspended, wil->status) || 1984fe9ee51eSMaya Erez test_bit(wil_status_resuming, wil->status)) { 1985fe9ee51eSMaya Erez wil_dbg_txrx(wil, 1986fe9ee51eSMaya Erez "suspend/resume in progress. drop packet\n"); 1987fe9ee51eSMaya Erez spin_unlock(&txdata->lock); 1988fe9ee51eSMaya Erez return -EINVAL; 1989fe9ee51eSMaya Erez } 1990fe9ee51eSMaya Erez 19919202d7b6SMaya Erez rc = (skb_is_gso(skb) ? wil->txrx_ops.tx_ring_tso : __wil_tx_ring) 19929202d7b6SMaya Erez (wil, vif, ring, skb); 19933d4bde15SVladimir Kondratiev 19945933a06dSVladimir Kondratiev spin_unlock(&txdata->lock); 19953d4bde15SVladimir Kondratiev 19965933a06dSVladimir Kondratiev return rc; 19975933a06dSVladimir Kondratiev } 19985933a06dSVladimir Kondratiev 1999f9e3033fSDedy Lansky /** 2000f9e3033fSDedy Lansky * Check status of tx vrings and stop/wake net queues if needed 20015bd60982SLior David * It will start/stop net queues of a specific VIF net_device. 2002f9e3033fSDedy Lansky * 2003f9e3033fSDedy Lansky * This function does one of two checks: 2004f9e3033fSDedy Lansky * In case check_stop is true, will check if net queues need to be stopped. If 2005f9e3033fSDedy Lansky * the conditions for stopping are met, netif_tx_stop_all_queues() is called. 2006f9e3033fSDedy Lansky * In case check_stop is false, will check if net queues need to be waked. If 2007f9e3033fSDedy Lansky * the conditions for waking are met, netif_tx_wake_all_queues() is called. 2008f9e3033fSDedy Lansky * vring is the vring which is currently being modified by either adding 2009f9e3033fSDedy Lansky * descriptors (tx) into it or removing descriptors (tx complete) from it. Can 2010f9e3033fSDedy Lansky * be null when irrelevant (e.g. connect/disconnect events). 2011f9e3033fSDedy Lansky * 2012f9e3033fSDedy Lansky * The implementation is to stop net queues if modified vring has low 2013f9e3033fSDedy Lansky * descriptor availability. Wake if all vrings are not in low descriptor 2014f9e3033fSDedy Lansky * availability and modified vring has high descriptor availability. 2015f9e3033fSDedy Lansky */ 2016f9e3033fSDedy Lansky static inline void __wil_update_net_queues(struct wil6210_priv *wil, 20175bd60982SLior David struct wil6210_vif *vif, 201810590c6aSGidon Studinski struct wil_ring *ring, 2019f9e3033fSDedy Lansky bool check_stop) 2020f9e3033fSDedy Lansky { 2021f9e3033fSDedy Lansky int i; 2022df2b5388SMaya Erez int min_ring_id = wil_get_min_tx_ring_id(wil); 2023f9e3033fSDedy Lansky 20245bd60982SLior David if (unlikely(!vif)) 20255bd60982SLior David return; 2026f9e3033fSDedy Lansky 202710590c6aSGidon Studinski if (ring) 20285bd60982SLior David wil_dbg_txrx(wil, "vring %d, mid %d, check_stop=%d, stopped=%d", 202910590c6aSGidon Studinski (int)(ring - wil->ring_tx), vif->mid, check_stop, 20305bd60982SLior David vif->net_queue_stopped); 20315bd60982SLior David else 20325bd60982SLior David wil_dbg_txrx(wil, "check_stop=%d, mid=%d, stopped=%d", 20335bd60982SLior David check_stop, vif->mid, vif->net_queue_stopped); 20345bd60982SLior David 20355bd60982SLior David if (check_stop == vif->net_queue_stopped) 2036f9e3033fSDedy Lansky /* net queues already in desired state */ 2037f9e3033fSDedy Lansky return; 2038f9e3033fSDedy Lansky 2039f9e3033fSDedy Lansky if (check_stop) { 204010590c6aSGidon Studinski if (!ring || unlikely(wil_ring_avail_low(ring))) { 2041f9e3033fSDedy Lansky /* not enough room in the vring */ 20425bd60982SLior David netif_tx_stop_all_queues(vif_to_ndev(vif)); 20435bd60982SLior David vif->net_queue_stopped = true; 2044f9e3033fSDedy Lansky wil_dbg_txrx(wil, "netif_tx_stop called\n"); 2045f9e3033fSDedy Lansky } 2046f9e3033fSDedy Lansky return; 2047f9e3033fSDedy Lansky } 2048f9e3033fSDedy Lansky 2049fe9ee51eSMaya Erez /* Do not wake the queues in suspend flow */ 2050fe9ee51eSMaya Erez if (test_bit(wil_status_suspending, wil->status) || 2051fe9ee51eSMaya Erez test_bit(wil_status_suspended, wil->status)) 2052fe9ee51eSMaya Erez return; 2053fe9ee51eSMaya Erez 2054f9e3033fSDedy Lansky /* check wake */ 2055df2b5388SMaya Erez for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) { 205610590c6aSGidon Studinski struct wil_ring *cur_ring = &wil->ring_tx[i]; 205710590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[i]; 2058f9e3033fSDedy Lansky 205910590c6aSGidon Studinski if (txdata->mid != vif->mid || !cur_ring->va || 206010590c6aSGidon Studinski !txdata->enabled || cur_ring == ring) 2061f9e3033fSDedy Lansky continue; 2062f9e3033fSDedy Lansky 206310590c6aSGidon Studinski if (wil_ring_avail_low(cur_ring)) { 206410590c6aSGidon Studinski wil_dbg_txrx(wil, "ring %d full, can't wake\n", 206510590c6aSGidon Studinski (int)(cur_ring - wil->ring_tx)); 2066f9e3033fSDedy Lansky return; 2067f9e3033fSDedy Lansky } 2068f9e3033fSDedy Lansky } 2069f9e3033fSDedy Lansky 207010590c6aSGidon Studinski if (!ring || wil_ring_avail_high(ring)) { 207110590c6aSGidon Studinski /* enough room in the ring */ 2072f9e3033fSDedy Lansky wil_dbg_txrx(wil, "calling netif_tx_wake\n"); 20735bd60982SLior David netif_tx_wake_all_queues(vif_to_ndev(vif)); 20745bd60982SLior David vif->net_queue_stopped = false; 2075f9e3033fSDedy Lansky } 2076f9e3033fSDedy Lansky } 2077f9e3033fSDedy Lansky 20785bd60982SLior David void wil_update_net_queues(struct wil6210_priv *wil, struct wil6210_vif *vif, 207910590c6aSGidon Studinski struct wil_ring *ring, bool check_stop) 2080f9e3033fSDedy Lansky { 2081f9e3033fSDedy Lansky spin_lock(&wil->net_queue_lock); 208210590c6aSGidon Studinski __wil_update_net_queues(wil, vif, ring, check_stop); 2083f9e3033fSDedy Lansky spin_unlock(&wil->net_queue_lock); 2084f9e3033fSDedy Lansky } 2085f9e3033fSDedy Lansky 20865bd60982SLior David void wil_update_net_queues_bh(struct wil6210_priv *wil, struct wil6210_vif *vif, 208710590c6aSGidon Studinski struct wil_ring *ring, bool check_stop) 2088f9e3033fSDedy Lansky { 2089f9e3033fSDedy Lansky spin_lock_bh(&wil->net_queue_lock); 209010590c6aSGidon Studinski __wil_update_net_queues(wil, vif, ring, check_stop); 2091f9e3033fSDedy Lansky spin_unlock_bh(&wil->net_queue_lock); 2092f9e3033fSDedy Lansky } 2093f9e3033fSDedy Lansky 20942be7d22fSVladimir Kondratiev netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) 20952be7d22fSVladimir Kondratiev { 2096e00243faSLior David struct wil6210_vif *vif = ndev_to_vif(ndev); 2097e00243faSLior David struct wil6210_priv *wil = vif_to_wil(vif); 20983df2cd36SVladimir Kondratiev struct ethhdr *eth = (void *)skb->data; 209941d6b093SVladimir Kondratiev bool bcast = is_multicast_ether_addr(eth->h_dest); 21009202d7b6SMaya Erez struct wil_ring *ring; 2101aa27deaaSVladimir Kondratiev static bool pr_once_fw; 21022be7d22fSVladimir Kondratiev int rc; 21032be7d22fSVladimir Kondratiev 2104af3db60aSLazar Alexei wil_dbg_txrx(wil, "start_xmit\n"); 210533c477fdSVladimir Kondratiev if (unlikely(!test_bit(wil_status_fwready, wil->status))) { 2106aa27deaaSVladimir Kondratiev if (!pr_once_fw) { 21072be7d22fSVladimir Kondratiev wil_err(wil, "FW not ready\n"); 2108aa27deaaSVladimir Kondratiev pr_once_fw = true; 2109aa27deaaSVladimir Kondratiev } 21102be7d22fSVladimir Kondratiev goto drop; 21112be7d22fSVladimir Kondratiev } 21125bd60982SLior David if (unlikely(!test_bit(wil_vif_fwconnected, vif->status))) { 21135bd60982SLior David wil_dbg_ratelimited(wil, 21145bd60982SLior David "VIF not connected, packet dropped\n"); 21152be7d22fSVladimir Kondratiev goto drop; 21162be7d22fSVladimir Kondratiev } 2117e00243faSLior David if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_MONITOR)) { 21182be7d22fSVladimir Kondratiev wil_err(wil, "Xmit in monitor mode not supported\n"); 21192be7d22fSVladimir Kondratiev goto drop; 21202be7d22fSVladimir Kondratiev } 2121aa27deaaSVladimir Kondratiev pr_once_fw = false; 2122d58db4e4SVladimir Kondratiev 21232be7d22fSVladimir Kondratiev /* find vring */ 2124e00243faSLior David if (vif->wdev.iftype == NL80211_IFTYPE_STATION && !vif->pbss) { 2125a895cb8bSLior David /* in STA mode (ESS), all to same VRING (to AP) */ 21269202d7b6SMaya Erez ring = wil_find_tx_ring_sta(wil, vif, skb); 2127a895cb8bSLior David } else if (bcast) { 2128e00243faSLior David if (vif->pbss) 2129a895cb8bSLior David /* in pbss, no bcast VRING - duplicate skb in 2130a895cb8bSLior David * all stations VRINGs 2131a895cb8bSLior David */ 21329202d7b6SMaya Erez ring = wil_find_tx_bcast_2(wil, vif, skb); 2133e00243faSLior David else if (vif->wdev.iftype == NL80211_IFTYPE_AP) 2134a895cb8bSLior David /* AP has a dedicated bcast VRING */ 21359202d7b6SMaya Erez ring = wil_find_tx_bcast_1(wil, vif, skb); 2136a895cb8bSLior David else 2137a895cb8bSLior David /* unexpected combination, fallback to duplicating 2138a895cb8bSLior David * the skb in all stations VRINGs 2139a895cb8bSLior David */ 21409202d7b6SMaya Erez ring = wil_find_tx_bcast_2(wil, vif, skb); 2141a895cb8bSLior David } else { 2142a895cb8bSLior David /* unicast, find specific VRING by dest. address */ 21439202d7b6SMaya Erez ring = wil_find_tx_ucast(wil, vif, skb); 214454ed90a8SVladimir Kondratiev } 21459202d7b6SMaya Erez if (unlikely(!ring)) { 214610590c6aSGidon Studinski wil_dbg_txrx(wil, "No Tx RING found for %pM\n", eth->h_dest); 21472be7d22fSVladimir Kondratiev goto drop; 21482be7d22fSVladimir Kondratiev } 21492be7d22fSVladimir Kondratiev /* set up vring entry */ 21509202d7b6SMaya Erez rc = wil_tx_ring(wil, vif, ring, skb); 2151d58db4e4SVladimir Kondratiev 21522be7d22fSVladimir Kondratiev switch (rc) { 21532be7d22fSVladimir Kondratiev case 0: 2154f9e3033fSDedy Lansky /* shall we stop net queues? */ 21559202d7b6SMaya Erez wil_update_net_queues_bh(wil, vif, ring, true); 2156795ce734SVladimir Kondratiev /* statistics will be updated on the tx_complete */ 21572be7d22fSVladimir Kondratiev dev_kfree_skb_any(skb); 21582be7d22fSVladimir Kondratiev return NETDEV_TX_OK; 21592be7d22fSVladimir Kondratiev case -ENOMEM: 21602be7d22fSVladimir Kondratiev return NETDEV_TX_BUSY; 21612be7d22fSVladimir Kondratiev default: 2162afda8bb5SVladimir Kondratiev break; /* goto drop; */ 21632be7d22fSVladimir Kondratiev } 21642be7d22fSVladimir Kondratiev drop: 21652be7d22fSVladimir Kondratiev ndev->stats.tx_dropped++; 21662be7d22fSVladimir Kondratiev dev_kfree_skb_any(skb); 21672be7d22fSVladimir Kondratiev 21682be7d22fSVladimir Kondratiev return NET_XMIT_DROP; 21692be7d22fSVladimir Kondratiev } 21702be7d22fSVladimir Kondratiev 2171a24a3d6aSDedy Lansky void wil_tx_latency_calc(struct wil6210_priv *wil, struct sk_buff *skb, 2172a24a3d6aSDedy Lansky struct wil_sta_info *sta) 2173a24a3d6aSDedy Lansky { 2174a24a3d6aSDedy Lansky int skb_time_us; 2175a24a3d6aSDedy Lansky int bin; 2176a24a3d6aSDedy Lansky 2177a24a3d6aSDedy Lansky if (!wil->tx_latency) 2178a24a3d6aSDedy Lansky return; 2179a24a3d6aSDedy Lansky 2180a24a3d6aSDedy Lansky if (ktime_to_ms(*(ktime_t *)&skb->cb) == 0) 2181a24a3d6aSDedy Lansky return; 2182a24a3d6aSDedy Lansky 2183a24a3d6aSDedy Lansky skb_time_us = ktime_us_delta(ktime_get(), *(ktime_t *)&skb->cb); 2184a24a3d6aSDedy Lansky bin = skb_time_us / wil->tx_latency_res; 2185a24a3d6aSDedy Lansky bin = min_t(int, bin, WIL_NUM_LATENCY_BINS - 1); 2186a24a3d6aSDedy Lansky 2187a24a3d6aSDedy Lansky wil_dbg_txrx(wil, "skb time %dus => bin %d\n", skb_time_us, bin); 2188a24a3d6aSDedy Lansky sta->tx_latency_bins[bin]++; 2189a24a3d6aSDedy Lansky sta->stats.tx_latency_total_us += skb_time_us; 2190a24a3d6aSDedy Lansky if (skb_time_us < sta->stats.tx_latency_min_us) 2191a24a3d6aSDedy Lansky sta->stats.tx_latency_min_us = skb_time_us; 2192a24a3d6aSDedy Lansky if (skb_time_us > sta->stats.tx_latency_max_us) 2193a24a3d6aSDedy Lansky sta->stats.tx_latency_max_us = skb_time_us; 2194a24a3d6aSDedy Lansky } 2195a24a3d6aSDedy Lansky 21962be7d22fSVladimir Kondratiev /** 21972be7d22fSVladimir Kondratiev * Clean up transmitted skb's from the Tx VRING 21982be7d22fSVladimir Kondratiev * 2199e0287c4aSVladimir Kondratiev * Return number of descriptors cleared 2200e0287c4aSVladimir Kondratiev * 22012be7d22fSVladimir Kondratiev * Safe to call from IRQ 22022be7d22fSVladimir Kondratiev */ 22035bd60982SLior David int wil_tx_complete(struct wil6210_vif *vif, int ringid) 22042be7d22fSVladimir Kondratiev { 22055bd60982SLior David struct wil6210_priv *wil = vif_to_wil(vif); 22065bd60982SLior David struct net_device *ndev = vif_to_ndev(vif); 22072be7d22fSVladimir Kondratiev struct device *dev = wil_to_dev(wil); 220810590c6aSGidon Studinski struct wil_ring *vring = &wil->ring_tx[ringid]; 220910590c6aSGidon Studinski struct wil_ring_tx_data *txdata = &wil->ring_tx_data[ringid]; 2210e0287c4aSVladimir Kondratiev int done = 0; 221110590c6aSGidon Studinski int cid = wil->ring2cid_tid[ringid][0]; 221241d6b093SVladimir Kondratiev struct wil_net_stats *stats = NULL; 2213c236658fSVladimir Kondratiev volatile struct vring_tx_desc *_d; 22140436fd9aSVladimir Shulman int used_before_complete; 22150436fd9aSVladimir Shulman int used_new; 22162be7d22fSVladimir Kondratiev 221733c477fdSVladimir Kondratiev if (unlikely(!vring->va)) { 22182be7d22fSVladimir Kondratiev wil_err(wil, "Tx irq[%d]: vring not initialized\n", ringid); 2219e0287c4aSVladimir Kondratiev return 0; 22202be7d22fSVladimir Kondratiev } 22212be7d22fSVladimir Kondratiev 222233c477fdSVladimir Kondratiev if (unlikely(!txdata->enabled)) { 2223097638a0SVladimir Kondratiev wil_info(wil, "Tx irq[%d]: vring disabled\n", ringid); 2224097638a0SVladimir Kondratiev return 0; 2225097638a0SVladimir Kondratiev } 2226097638a0SVladimir Kondratiev 2227af3db60aSLazar Alexei wil_dbg_txrx(wil, "tx_complete: (%d)\n", ringid); 22282be7d22fSVladimir Kondratiev 222910590c6aSGidon Studinski used_before_complete = wil_ring_used_tx(vring); 22300436fd9aSVladimir Shulman 223141d6b093SVladimir Kondratiev if (cid < WIL6210_MAX_CID) 223241d6b093SVladimir Kondratiev stats = &wil->sta[cid].stats; 223341d6b093SVladimir Kondratiev 223410590c6aSGidon Studinski while (!wil_ring_is_empty(vring)) { 2235c236658fSVladimir Kondratiev int new_swtail; 2236c236658fSVladimir Kondratiev struct wil_ctx *ctx = &vring->ctx[vring->swtail]; 2237c236658fSVladimir Kondratiev /** 2238c236658fSVladimir Kondratiev * For the fragmented skb, HW will set DU bit only for the 22393d4bde15SVladimir Kondratiev * last fragment. look for it. 22403d4bde15SVladimir Kondratiev * In TSO the first DU will include hdr desc 2241c236658fSVladimir Kondratiev */ 2242c236658fSVladimir Kondratiev int lf = (vring->swtail + ctx->nr_frags) % vring->size; 2243c236658fSVladimir Kondratiev /* TODO: check we are not past head */ 2244c236658fSVladimir Kondratiev 224510590c6aSGidon Studinski _d = &vring->va[lf].tx.legacy; 224633c477fdSVladimir Kondratiev if (unlikely(!(_d->dma.status & TX_DMA_STATUS_DU))) 2247c236658fSVladimir Kondratiev break; 2248c236658fSVladimir Kondratiev 2249c236658fSVladimir Kondratiev new_swtail = (lf + 1) % vring->size; 2250c236658fSVladimir Kondratiev while (vring->swtail != new_swtail) { 22514de41befSVladimir Kondratiev struct vring_tx_desc dd, *d = ⅆ 22527e594444SVladimir Kondratiev u16 dmalen; 225376dfa4b7SVladimir Kondratiev struct sk_buff *skb; 225476dfa4b7SVladimir Kondratiev 225576dfa4b7SVladimir Kondratiev ctx = &vring->ctx[vring->swtail]; 225676dfa4b7SVladimir Kondratiev skb = ctx->skb; 225710590c6aSGidon Studinski _d = &vring->va[vring->swtail].tx.legacy; 22584de41befSVladimir Kondratiev 225968ada71eSVladimir Kondratiev *d = *_d; 22604de41befSVladimir Kondratiev 22617e594444SVladimir Kondratiev dmalen = le16_to_cpu(d->dma.length); 226298658095SVladimir Kondratiev trace_wil6210_tx_done(ringid, vring->swtail, dmalen, 226398658095SVladimir Kondratiev d->dma.error); 22647743882dSVladimir Kondratiev wil_dbg_txrx(wil, 22655b29c573SVladimir Kondratiev "TxC[%2d][%3d] : %d bytes, status 0x%02x err 0x%02x\n", 22665b29c573SVladimir Kondratiev ringid, vring->swtail, dmalen, 22675b29c573SVladimir Kondratiev d->dma.status, d->dma.error); 22685b29c573SVladimir Kondratiev wil_hex_dump_txrx("TxCD ", DUMP_PREFIX_NONE, 32, 4, 22692be7d22fSVladimir Kondratiev (const void *)d, sizeof(*d), false); 22702be7d22fSVladimir Kondratiev 22719202d7b6SMaya Erez wil->txrx_ops.tx_desc_unmap(dev, 22729202d7b6SMaya Erez (union wil_tx_desc *)d, 22739202d7b6SMaya Erez ctx); 2274f88f113aSVladimir Kondratiev 22752be7d22fSVladimir Kondratiev if (skb) { 227633c477fdSVladimir Kondratiev if (likely(d->dma.error == 0)) { 2277795ce734SVladimir Kondratiev ndev->stats.tx_packets++; 2278795ce734SVladimir Kondratiev ndev->stats.tx_bytes += skb->len; 227941d6b093SVladimir Kondratiev if (stats) { 228041d6b093SVladimir Kondratiev stats->tx_packets++; 2281c8b78b5fSVladimir Kondratiev stats->tx_bytes += skb->len; 2282a24a3d6aSDedy Lansky 2283a24a3d6aSDedy Lansky wil_tx_latency_calc(wil, skb, 2284a24a3d6aSDedy Lansky &wil->sta[cid]); 228541d6b093SVladimir Kondratiev } 2286795ce734SVladimir Kondratiev } else { 2287795ce734SVladimir Kondratiev ndev->stats.tx_errors++; 228841d6b093SVladimir Kondratiev if (stats) 2289c8b78b5fSVladimir Kondratiev stats->tx_errors++; 2290795ce734SVladimir Kondratiev } 2291713c8a29SVladimir Kondratiev wil_consume_skb(skb, d->dma.error == 0); 22922be7d22fSVladimir Kondratiev } 2293f88f113aSVladimir Kondratiev memset(ctx, 0, sizeof(*ctx)); 2294eb26cff1SMaya Erez /* Make sure the ctx is zeroed before updating the tail 229510590c6aSGidon Studinski * to prevent a case where wil_tx_ring will see 2296eb26cff1SMaya Erez * this descriptor as used and handle it before ctx zero 2297eb26cff1SMaya Erez * is completed. 2298eb26cff1SMaya Erez */ 2299eb26cff1SMaya Erez wmb(); 2300c236658fSVladimir Kondratiev /* There is no need to touch HW descriptor: 230103269c65SVladimir Kondratiev * - ststus bit TX_DMA_STATUS_DU is set by design, 230203269c65SVladimir Kondratiev * so hardware will not try to process this desc., 230303269c65SVladimir Kondratiev * - rest of descriptor will be initialized on Tx. 230403269c65SVladimir Kondratiev */ 230510590c6aSGidon Studinski vring->swtail = wil_ring_next_tail(vring); 2306e0287c4aSVladimir Kondratiev done++; 23072be7d22fSVladimir Kondratiev } 2308c236658fSVladimir Kondratiev } 230967c3e1b4SVladimir Kondratiev 23100436fd9aSVladimir Shulman /* performance monitoring */ 231110590c6aSGidon Studinski used_new = wil_ring_used_tx(vring); 231210590c6aSGidon Studinski if (wil_val_in_range(wil->ring_idle_trsh, 23130436fd9aSVladimir Shulman used_new, used_before_complete)) { 23140436fd9aSVladimir Shulman wil_dbg_txrx(wil, "Ring[%2d] idle %d -> %d\n", 23150436fd9aSVladimir Shulman ringid, used_before_complete, used_new); 23167c0acf86SVladimir Kondratiev txdata->last_idle = get_cycles(); 23177c0acf86SVladimir Kondratiev } 231867c3e1b4SVladimir Kondratiev 2319f9e3033fSDedy Lansky /* shall we wake net queues? */ 2320f9e3033fSDedy Lansky if (done) 23215bd60982SLior David wil_update_net_queues(wil, vif, vring, false); 2322e0287c4aSVladimir Kondratiev 2323e0287c4aSVladimir Kondratiev return done; 23242be7d22fSVladimir Kondratiev } 232596c93589SGidon Studinski 232696c93589SGidon Studinski static inline int wil_tx_init(struct wil6210_priv *wil) 232796c93589SGidon Studinski { 232896c93589SGidon Studinski return 0; 232996c93589SGidon Studinski } 233096c93589SGidon Studinski 233196c93589SGidon Studinski static inline void wil_tx_fini(struct wil6210_priv *wil) {} 233296c93589SGidon Studinski 23337be13fc3SGidon Studinski static void wil_get_reorder_params(struct wil6210_priv *wil, 23347be13fc3SGidon Studinski struct sk_buff *skb, int *tid, int *cid, 23351bd82ee0SDedy Lansky int *mid, u16 *seq, int *mcast, int *retry) 23367be13fc3SGidon Studinski { 23377be13fc3SGidon Studinski struct vring_rx_desc *d = wil_skb_rxdesc(skb); 23387be13fc3SGidon Studinski 23397be13fc3SGidon Studinski *tid = wil_rxdesc_tid(d); 23407be13fc3SGidon Studinski *cid = wil_rxdesc_cid(d); 23417be13fc3SGidon Studinski *mid = wil_rxdesc_mid(d); 23427be13fc3SGidon Studinski *seq = wil_rxdesc_seq(d); 23437be13fc3SGidon Studinski *mcast = wil_rxdesc_mcast(d); 23441bd82ee0SDedy Lansky *retry = wil_rxdesc_retry(d); 23457be13fc3SGidon Studinski } 23467be13fc3SGidon Studinski 234796c93589SGidon Studinski void wil_init_txrx_ops_legacy_dma(struct wil6210_priv *wil) 234896c93589SGidon Studinski { 234996c93589SGidon Studinski wil->txrx_ops.configure_interrupt_moderation = 235096c93589SGidon Studinski wil_configure_interrupt_moderation; 235196c93589SGidon Studinski /* TX ops */ 23529202d7b6SMaya Erez wil->txrx_ops.tx_desc_map = wil_tx_desc_map; 23539202d7b6SMaya Erez wil->txrx_ops.tx_desc_unmap = wil_txdesc_unmap; 23549202d7b6SMaya Erez wil->txrx_ops.tx_ring_tso = __wil_tx_vring_tso; 235596c93589SGidon Studinski wil->txrx_ops.ring_init_tx = wil_vring_init_tx; 235696c93589SGidon Studinski wil->txrx_ops.ring_fini_tx = wil_vring_free; 235796c93589SGidon Studinski wil->txrx_ops.ring_init_bcast = wil_vring_init_bcast; 235896c93589SGidon Studinski wil->txrx_ops.tx_init = wil_tx_init; 235996c93589SGidon Studinski wil->txrx_ops.tx_fini = wil_tx_fini; 2360b9010f10SAhmad Masri wil->txrx_ops.tx_ring_modify = wil_tx_vring_modify; 236196c93589SGidon Studinski /* RX ops */ 236296c93589SGidon Studinski wil->txrx_ops.rx_init = wil_rx_init; 23637be13fc3SGidon Studinski wil->txrx_ops.wmi_addba_rx_resp = wmi_addba_rx_resp; 23647be13fc3SGidon Studinski wil->txrx_ops.get_reorder_params = wil_get_reorder_params; 23657be13fc3SGidon Studinski wil->txrx_ops.get_netif_rx_params = 23667be13fc3SGidon Studinski wil_get_netif_rx_params; 23677be13fc3SGidon Studinski wil->txrx_ops.rx_crypto_check = wil_rx_crypto_check; 2368e15af41cSDedy Lansky wil->txrx_ops.rx_error_check = wil_rx_error_check; 23697be13fc3SGidon Studinski wil->txrx_ops.is_rx_idle = wil_is_rx_idle; 237096c93589SGidon Studinski wil->txrx_ops.rx_fini = wil_rx_fini; 237196c93589SGidon Studinski } 2372