1ca9c54d2SDexuan Cui // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2ca9c54d2SDexuan Cui /* Copyright (c) 2021, Microsoft Corporation. */ 3ca9c54d2SDexuan Cui 43b80b73aSJakub Kicinski #include <uapi/linux/bpf.h> 53b80b73aSJakub Kicinski 6ca9c54d2SDexuan Cui #include <linux/inetdevice.h> 7ca9c54d2SDexuan Cui #include <linux/etherdevice.h> 8ca9c54d2SDexuan Cui #include <linux/ethtool.h> 97a8938cdSHaiyang Zhang #include <linux/filter.h> 10ca9c54d2SDexuan Cui #include <linux/mm.h> 11ca9c54d2SDexuan Cui 12ca9c54d2SDexuan Cui #include <net/checksum.h> 13ca9c54d2SDexuan Cui #include <net/ip6_checksum.h> 14ca9c54d2SDexuan Cui 15fd325cd6SLong Li #include <net/mana/mana.h> 16fd325cd6SLong Li #include <net/mana/mana_auxiliary.h> 17a69839d4SLong Li 18a69839d4SLong Li static DEFINE_IDA(mana_adev_ida); 19a69839d4SLong Li 20a69839d4SLong Li static int mana_adev_idx_alloc(void) 21a69839d4SLong Li { 22a69839d4SLong Li return ida_alloc(&mana_adev_ida, GFP_KERNEL); 23a69839d4SLong Li } 24a69839d4SLong Li 25a69839d4SLong Li static void mana_adev_idx_free(int idx) 26a69839d4SLong Li { 27a69839d4SLong Li ida_free(&mana_adev_ida, idx); 28a69839d4SLong Li } 29ca9c54d2SDexuan Cui 30ca9c54d2SDexuan Cui /* Microsoft Azure Network Adapter (MANA) functions */ 31ca9c54d2SDexuan Cui 32ca9c54d2SDexuan Cui static int mana_open(struct net_device *ndev) 33ca9c54d2SDexuan Cui { 34ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 35ca9c54d2SDexuan Cui int err; 36ca9c54d2SDexuan Cui 37ca9c54d2SDexuan Cui err = mana_alloc_queues(ndev); 38ca9c54d2SDexuan Cui if (err) 39ca9c54d2SDexuan Cui return err; 40ca9c54d2SDexuan Cui 41ca9c54d2SDexuan Cui apc->port_is_up = true; 42ca9c54d2SDexuan Cui 43ca9c54d2SDexuan Cui /* Ensure port state updated before txq state */ 44ca9c54d2SDexuan Cui smp_wmb(); 45ca9c54d2SDexuan Cui 46ca9c54d2SDexuan Cui netif_carrier_on(ndev); 47ca9c54d2SDexuan Cui netif_tx_wake_all_queues(ndev); 48ca9c54d2SDexuan Cui 49ca9c54d2SDexuan Cui return 0; 50ca9c54d2SDexuan Cui } 51ca9c54d2SDexuan Cui 52ca9c54d2SDexuan Cui static int mana_close(struct net_device *ndev) 53ca9c54d2SDexuan Cui { 54ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 55ca9c54d2SDexuan Cui 56ca9c54d2SDexuan Cui if (!apc->port_is_up) 57ca9c54d2SDexuan Cui return 0; 58ca9c54d2SDexuan Cui 59ca9c54d2SDexuan Cui return mana_detach(ndev, true); 60ca9c54d2SDexuan Cui } 61ca9c54d2SDexuan Cui 62ca9c54d2SDexuan Cui static bool mana_can_tx(struct gdma_queue *wq) 63ca9c54d2SDexuan Cui { 64ca9c54d2SDexuan Cui return mana_gd_wq_avail_space(wq) >= MAX_TX_WQE_SIZE; 65ca9c54d2SDexuan Cui } 66ca9c54d2SDexuan Cui 67ca9c54d2SDexuan Cui static unsigned int mana_checksum_info(struct sk_buff *skb) 68ca9c54d2SDexuan Cui { 69ca9c54d2SDexuan Cui if (skb->protocol == htons(ETH_P_IP)) { 70ca9c54d2SDexuan Cui struct iphdr *ip = ip_hdr(skb); 71ca9c54d2SDexuan Cui 72ca9c54d2SDexuan Cui if (ip->protocol == IPPROTO_TCP) 73ca9c54d2SDexuan Cui return IPPROTO_TCP; 74ca9c54d2SDexuan Cui 75ca9c54d2SDexuan Cui if (ip->protocol == IPPROTO_UDP) 76ca9c54d2SDexuan Cui return IPPROTO_UDP; 77ca9c54d2SDexuan Cui } else if (skb->protocol == htons(ETH_P_IPV6)) { 78ca9c54d2SDexuan Cui struct ipv6hdr *ip6 = ipv6_hdr(skb); 79ca9c54d2SDexuan Cui 80ca9c54d2SDexuan Cui if (ip6->nexthdr == IPPROTO_TCP) 81ca9c54d2SDexuan Cui return IPPROTO_TCP; 82ca9c54d2SDexuan Cui 83ca9c54d2SDexuan Cui if (ip6->nexthdr == IPPROTO_UDP) 84ca9c54d2SDexuan Cui return IPPROTO_UDP; 85ca9c54d2SDexuan Cui } 86ca9c54d2SDexuan Cui 87ca9c54d2SDexuan Cui /* No csum offloading */ 88ca9c54d2SDexuan Cui return 0; 89ca9c54d2SDexuan Cui } 90ca9c54d2SDexuan Cui 91ca9c54d2SDexuan Cui static int mana_map_skb(struct sk_buff *skb, struct mana_port_context *apc, 92ca9c54d2SDexuan Cui struct mana_tx_package *tp) 93ca9c54d2SDexuan Cui { 94ca9c54d2SDexuan Cui struct mana_skb_head *ash = (struct mana_skb_head *)skb->head; 95ca9c54d2SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 96ca9c54d2SDexuan Cui struct gdma_context *gc; 97ca9c54d2SDexuan Cui struct device *dev; 98ca9c54d2SDexuan Cui skb_frag_t *frag; 99ca9c54d2SDexuan Cui dma_addr_t da; 100ca9c54d2SDexuan Cui int i; 101ca9c54d2SDexuan Cui 102ca9c54d2SDexuan Cui gc = gd->gdma_context; 103ca9c54d2SDexuan Cui dev = gc->dev; 104ca9c54d2SDexuan Cui da = dma_map_single(dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); 105ca9c54d2SDexuan Cui 106ca9c54d2SDexuan Cui if (dma_mapping_error(dev, da)) 107ca9c54d2SDexuan Cui return -ENOMEM; 108ca9c54d2SDexuan Cui 109ca9c54d2SDexuan Cui ash->dma_handle[0] = da; 110ca9c54d2SDexuan Cui ash->size[0] = skb_headlen(skb); 111ca9c54d2SDexuan Cui 112ca9c54d2SDexuan Cui tp->wqe_req.sgl[0].address = ash->dma_handle[0]; 113ca9c54d2SDexuan Cui tp->wqe_req.sgl[0].mem_key = gd->gpa_mkey; 114ca9c54d2SDexuan Cui tp->wqe_req.sgl[0].size = ash->size[0]; 115ca9c54d2SDexuan Cui 116ca9c54d2SDexuan Cui for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 117ca9c54d2SDexuan Cui frag = &skb_shinfo(skb)->frags[i]; 118ca9c54d2SDexuan Cui da = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), 119ca9c54d2SDexuan Cui DMA_TO_DEVICE); 120ca9c54d2SDexuan Cui 121ca9c54d2SDexuan Cui if (dma_mapping_error(dev, da)) 122ca9c54d2SDexuan Cui goto frag_err; 123ca9c54d2SDexuan Cui 124ca9c54d2SDexuan Cui ash->dma_handle[i + 1] = da; 125ca9c54d2SDexuan Cui ash->size[i + 1] = skb_frag_size(frag); 126ca9c54d2SDexuan Cui 127ca9c54d2SDexuan Cui tp->wqe_req.sgl[i + 1].address = ash->dma_handle[i + 1]; 128ca9c54d2SDexuan Cui tp->wqe_req.sgl[i + 1].mem_key = gd->gpa_mkey; 129ca9c54d2SDexuan Cui tp->wqe_req.sgl[i + 1].size = ash->size[i + 1]; 130ca9c54d2SDexuan Cui } 131ca9c54d2SDexuan Cui 132ca9c54d2SDexuan Cui return 0; 133ca9c54d2SDexuan Cui 134ca9c54d2SDexuan Cui frag_err: 135ca9c54d2SDexuan Cui for (i = i - 1; i >= 0; i--) 136ca9c54d2SDexuan Cui dma_unmap_page(dev, ash->dma_handle[i + 1], ash->size[i + 1], 137ca9c54d2SDexuan Cui DMA_TO_DEVICE); 138ca9c54d2SDexuan Cui 139ca9c54d2SDexuan Cui dma_unmap_single(dev, ash->dma_handle[0], ash->size[0], DMA_TO_DEVICE); 140ca9c54d2SDexuan Cui 141ca9c54d2SDexuan Cui return -ENOMEM; 142ca9c54d2SDexuan Cui } 143ca9c54d2SDexuan Cui 1440c9ef08aSNathan Huckleberry netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev) 145ca9c54d2SDexuan Cui { 146ca9c54d2SDexuan Cui enum mana_tx_pkt_format pkt_fmt = MANA_SHORT_PKT_FMT; 147ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 148ca9c54d2SDexuan Cui u16 txq_idx = skb_get_queue_mapping(skb); 149ca9c54d2SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 150ca9c54d2SDexuan Cui bool ipv4 = false, ipv6 = false; 151ca9c54d2SDexuan Cui struct mana_tx_package pkg = {}; 152ca9c54d2SDexuan Cui struct netdev_queue *net_txq; 153f90f8420SHaiyang Zhang struct mana_stats_tx *tx_stats; 154ca9c54d2SDexuan Cui struct gdma_queue *gdma_sq; 155ca9c54d2SDexuan Cui unsigned int csum_type; 156ca9c54d2SDexuan Cui struct mana_txq *txq; 157ca9c54d2SDexuan Cui struct mana_cq *cq; 158ca9c54d2SDexuan Cui int err, len; 159bd7fc6e1SShradha Gupta u16 ihs; 160ca9c54d2SDexuan Cui 161ca9c54d2SDexuan Cui if (unlikely(!apc->port_is_up)) 162ca9c54d2SDexuan Cui goto tx_drop; 163ca9c54d2SDexuan Cui 164ca9c54d2SDexuan Cui if (skb_cow_head(skb, MANA_HEADROOM)) 165ca9c54d2SDexuan Cui goto tx_drop_count; 166ca9c54d2SDexuan Cui 167ca9c54d2SDexuan Cui txq = &apc->tx_qp[txq_idx].txq; 168ca9c54d2SDexuan Cui gdma_sq = txq->gdma_sq; 169ca9c54d2SDexuan Cui cq = &apc->tx_qp[txq_idx].tx_cq; 170bd7fc6e1SShradha Gupta tx_stats = &txq->stats; 171ca9c54d2SDexuan Cui 172ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.vcq_num = cq->gdma_id; 173ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.vsq_frame = txq->vsq_frame; 174ca9c54d2SDexuan Cui 175ca9c54d2SDexuan Cui if (txq->vp_offset > MANA_SHORT_VPORT_OFFSET_MAX) { 176ca9c54d2SDexuan Cui pkg.tx_oob.l_oob.long_vp_offset = txq->vp_offset; 177ca9c54d2SDexuan Cui pkt_fmt = MANA_LONG_PKT_FMT; 178ca9c54d2SDexuan Cui } else { 179ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.short_vp_offset = txq->vp_offset; 180ca9c54d2SDexuan Cui } 181ca9c54d2SDexuan Cui 182ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.pkt_fmt = pkt_fmt; 183ca9c54d2SDexuan Cui 184bd7fc6e1SShradha Gupta if (pkt_fmt == MANA_SHORT_PKT_FMT) { 185ca9c54d2SDexuan Cui pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_short_oob); 186bd7fc6e1SShradha Gupta u64_stats_update_begin(&tx_stats->syncp); 187bd7fc6e1SShradha Gupta tx_stats->short_pkt_fmt++; 188bd7fc6e1SShradha Gupta u64_stats_update_end(&tx_stats->syncp); 189bd7fc6e1SShradha Gupta } else { 190ca9c54d2SDexuan Cui pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_oob); 191bd7fc6e1SShradha Gupta u64_stats_update_begin(&tx_stats->syncp); 192bd7fc6e1SShradha Gupta tx_stats->long_pkt_fmt++; 193bd7fc6e1SShradha Gupta u64_stats_update_end(&tx_stats->syncp); 194bd7fc6e1SShradha Gupta } 195ca9c54d2SDexuan Cui 196ca9c54d2SDexuan Cui pkg.wqe_req.inline_oob_data = &pkg.tx_oob; 197ca9c54d2SDexuan Cui pkg.wqe_req.flags = 0; 198ca9c54d2SDexuan Cui pkg.wqe_req.client_data_unit = 0; 199ca9c54d2SDexuan Cui 200ca9c54d2SDexuan Cui pkg.wqe_req.num_sge = 1 + skb_shinfo(skb)->nr_frags; 201aa565497SLong Li WARN_ON_ONCE(pkg.wqe_req.num_sge > MAX_TX_WQE_SGL_ENTRIES); 202ca9c54d2SDexuan Cui 203ca9c54d2SDexuan Cui if (pkg.wqe_req.num_sge <= ARRAY_SIZE(pkg.sgl_array)) { 204ca9c54d2SDexuan Cui pkg.wqe_req.sgl = pkg.sgl_array; 205ca9c54d2SDexuan Cui } else { 206ca9c54d2SDexuan Cui pkg.sgl_ptr = kmalloc_array(pkg.wqe_req.num_sge, 207ca9c54d2SDexuan Cui sizeof(struct gdma_sge), 208ca9c54d2SDexuan Cui GFP_ATOMIC); 209ca9c54d2SDexuan Cui if (!pkg.sgl_ptr) 210ca9c54d2SDexuan Cui goto tx_drop_count; 211ca9c54d2SDexuan Cui 212ca9c54d2SDexuan Cui pkg.wqe_req.sgl = pkg.sgl_ptr; 213ca9c54d2SDexuan Cui } 214ca9c54d2SDexuan Cui 215ca9c54d2SDexuan Cui if (skb->protocol == htons(ETH_P_IP)) 216ca9c54d2SDexuan Cui ipv4 = true; 217ca9c54d2SDexuan Cui else if (skb->protocol == htons(ETH_P_IPV6)) 218ca9c54d2SDexuan Cui ipv6 = true; 219ca9c54d2SDexuan Cui 220ca9c54d2SDexuan Cui if (skb_is_gso(skb)) { 221ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4; 222ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6; 223ca9c54d2SDexuan Cui 224ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.comp_iphdr_csum = 1; 225ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.comp_tcp_csum = 1; 226ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.trans_off = skb_transport_offset(skb); 227ca9c54d2SDexuan Cui 228ca9c54d2SDexuan Cui pkg.wqe_req.client_data_unit = skb_shinfo(skb)->gso_size; 229ca9c54d2SDexuan Cui pkg.wqe_req.flags = GDMA_WR_OOB_IN_SGL | GDMA_WR_PAD_BY_SGE0; 230ca9c54d2SDexuan Cui if (ipv4) { 231ca9c54d2SDexuan Cui ip_hdr(skb)->tot_len = 0; 232ca9c54d2SDexuan Cui ip_hdr(skb)->check = 0; 233ca9c54d2SDexuan Cui tcp_hdr(skb)->check = 234ca9c54d2SDexuan Cui ~csum_tcpudp_magic(ip_hdr(skb)->saddr, 235ca9c54d2SDexuan Cui ip_hdr(skb)->daddr, 0, 236ca9c54d2SDexuan Cui IPPROTO_TCP, 0); 237ca9c54d2SDexuan Cui } else { 238ca9c54d2SDexuan Cui ipv6_hdr(skb)->payload_len = 0; 239ca9c54d2SDexuan Cui tcp_hdr(skb)->check = 240ca9c54d2SDexuan Cui ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 241ca9c54d2SDexuan Cui &ipv6_hdr(skb)->daddr, 0, 242ca9c54d2SDexuan Cui IPPROTO_TCP, 0); 243ca9c54d2SDexuan Cui } 244bd7fc6e1SShradha Gupta 245bd7fc6e1SShradha Gupta if (skb->encapsulation) { 246bd7fc6e1SShradha Gupta ihs = skb_inner_tcp_all_headers(skb); 247bd7fc6e1SShradha Gupta u64_stats_update_begin(&tx_stats->syncp); 248bd7fc6e1SShradha Gupta tx_stats->tso_inner_packets++; 249bd7fc6e1SShradha Gupta tx_stats->tso_inner_bytes += skb->len - ihs; 250bd7fc6e1SShradha Gupta u64_stats_update_end(&tx_stats->syncp); 251bd7fc6e1SShradha Gupta } else { 252bd7fc6e1SShradha Gupta if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) { 253bd7fc6e1SShradha Gupta ihs = skb_transport_offset(skb) + sizeof(struct udphdr); 254bd7fc6e1SShradha Gupta } else { 255bd7fc6e1SShradha Gupta ihs = skb_tcp_all_headers(skb); 256bd7fc6e1SShradha Gupta if (ipv6_has_hopopt_jumbo(skb)) 257bd7fc6e1SShradha Gupta ihs -= sizeof(struct hop_jumbo_hdr); 258bd7fc6e1SShradha Gupta } 259bd7fc6e1SShradha Gupta 260bd7fc6e1SShradha Gupta u64_stats_update_begin(&tx_stats->syncp); 261bd7fc6e1SShradha Gupta tx_stats->tso_packets++; 262bd7fc6e1SShradha Gupta tx_stats->tso_bytes += skb->len - ihs; 263bd7fc6e1SShradha Gupta u64_stats_update_end(&tx_stats->syncp); 264bd7fc6e1SShradha Gupta } 265bd7fc6e1SShradha Gupta 266ca9c54d2SDexuan Cui } else if (skb->ip_summed == CHECKSUM_PARTIAL) { 267ca9c54d2SDexuan Cui csum_type = mana_checksum_info(skb); 268ca9c54d2SDexuan Cui 269bd7fc6e1SShradha Gupta u64_stats_update_begin(&tx_stats->syncp); 270bd7fc6e1SShradha Gupta tx_stats->csum_partial++; 271bd7fc6e1SShradha Gupta u64_stats_update_end(&tx_stats->syncp); 272bd7fc6e1SShradha Gupta 273ca9c54d2SDexuan Cui if (csum_type == IPPROTO_TCP) { 274ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4; 275ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6; 276ca9c54d2SDexuan Cui 277ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.comp_tcp_csum = 1; 278ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.trans_off = skb_transport_offset(skb); 279ca9c54d2SDexuan Cui 280ca9c54d2SDexuan Cui } else if (csum_type == IPPROTO_UDP) { 281ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4; 282ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6; 283ca9c54d2SDexuan Cui 284ca9c54d2SDexuan Cui pkg.tx_oob.s_oob.comp_udp_csum = 1; 285ca9c54d2SDexuan Cui } else { 286ca9c54d2SDexuan Cui /* Can't do offload of this type of checksum */ 287ca9c54d2SDexuan Cui if (skb_checksum_help(skb)) 288ca9c54d2SDexuan Cui goto free_sgl_ptr; 289ca9c54d2SDexuan Cui } 290ca9c54d2SDexuan Cui } 291ca9c54d2SDexuan Cui 292bd7fc6e1SShradha Gupta if (mana_map_skb(skb, apc, &pkg)) { 293bd7fc6e1SShradha Gupta u64_stats_update_begin(&tx_stats->syncp); 294bd7fc6e1SShradha Gupta tx_stats->mana_map_err++; 295bd7fc6e1SShradha Gupta u64_stats_update_end(&tx_stats->syncp); 296ca9c54d2SDexuan Cui goto free_sgl_ptr; 297bd7fc6e1SShradha Gupta } 298ca9c54d2SDexuan Cui 299ca9c54d2SDexuan Cui skb_queue_tail(&txq->pending_skbs, skb); 300ca9c54d2SDexuan Cui 301ca9c54d2SDexuan Cui len = skb->len; 302ca9c54d2SDexuan Cui net_txq = netdev_get_tx_queue(ndev, txq_idx); 303ca9c54d2SDexuan Cui 304ca9c54d2SDexuan Cui err = mana_gd_post_work_request(gdma_sq, &pkg.wqe_req, 305ca9c54d2SDexuan Cui (struct gdma_posted_wqe_info *)skb->cb); 306ca9c54d2SDexuan Cui if (!mana_can_tx(gdma_sq)) { 307ca9c54d2SDexuan Cui netif_tx_stop_queue(net_txq); 308ca9c54d2SDexuan Cui apc->eth_stats.stop_queue++; 309ca9c54d2SDexuan Cui } 310ca9c54d2SDexuan Cui 311ca9c54d2SDexuan Cui if (err) { 312ca9c54d2SDexuan Cui (void)skb_dequeue_tail(&txq->pending_skbs); 313ca9c54d2SDexuan Cui netdev_warn(ndev, "Failed to post TX OOB: %d\n", err); 314ca9c54d2SDexuan Cui err = NETDEV_TX_BUSY; 315ca9c54d2SDexuan Cui goto tx_busy; 316ca9c54d2SDexuan Cui } 317ca9c54d2SDexuan Cui 318ca9c54d2SDexuan Cui err = NETDEV_TX_OK; 319ca9c54d2SDexuan Cui atomic_inc(&txq->pending_sends); 320ca9c54d2SDexuan Cui 321ca9c54d2SDexuan Cui mana_gd_wq_ring_doorbell(gd->gdma_context, gdma_sq); 322ca9c54d2SDexuan Cui 323ca9c54d2SDexuan Cui /* skb may be freed after mana_gd_post_work_request. Do not use it. */ 324ca9c54d2SDexuan Cui skb = NULL; 325ca9c54d2SDexuan Cui 326ca9c54d2SDexuan Cui tx_stats = &txq->stats; 327ca9c54d2SDexuan Cui u64_stats_update_begin(&tx_stats->syncp); 328ca9c54d2SDexuan Cui tx_stats->packets++; 329ca9c54d2SDexuan Cui tx_stats->bytes += len; 330ca9c54d2SDexuan Cui u64_stats_update_end(&tx_stats->syncp); 331ca9c54d2SDexuan Cui 332ca9c54d2SDexuan Cui tx_busy: 333ca9c54d2SDexuan Cui if (netif_tx_queue_stopped(net_txq) && mana_can_tx(gdma_sq)) { 334ca9c54d2SDexuan Cui netif_tx_wake_queue(net_txq); 335ca9c54d2SDexuan Cui apc->eth_stats.wake_queue++; 336ca9c54d2SDexuan Cui } 337ca9c54d2SDexuan Cui 338ca9c54d2SDexuan Cui kfree(pkg.sgl_ptr); 339ca9c54d2SDexuan Cui return err; 340ca9c54d2SDexuan Cui 341ca9c54d2SDexuan Cui free_sgl_ptr: 342ca9c54d2SDexuan Cui kfree(pkg.sgl_ptr); 343ca9c54d2SDexuan Cui tx_drop_count: 344ca9c54d2SDexuan Cui ndev->stats.tx_dropped++; 345ca9c54d2SDexuan Cui tx_drop: 346ca9c54d2SDexuan Cui dev_kfree_skb_any(skb); 347ca9c54d2SDexuan Cui return NETDEV_TX_OK; 348ca9c54d2SDexuan Cui } 349ca9c54d2SDexuan Cui 350ca9c54d2SDexuan Cui static void mana_get_stats64(struct net_device *ndev, 351ca9c54d2SDexuan Cui struct rtnl_link_stats64 *st) 352ca9c54d2SDexuan Cui { 353ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 354ca9c54d2SDexuan Cui unsigned int num_queues = apc->num_queues; 355f90f8420SHaiyang Zhang struct mana_stats_rx *rx_stats; 356f90f8420SHaiyang Zhang struct mana_stats_tx *tx_stats; 357ca9c54d2SDexuan Cui unsigned int start; 358ca9c54d2SDexuan Cui u64 packets, bytes; 359ca9c54d2SDexuan Cui int q; 360ca9c54d2SDexuan Cui 361ca9c54d2SDexuan Cui if (!apc->port_is_up) 362ca9c54d2SDexuan Cui return; 363ca9c54d2SDexuan Cui 364ca9c54d2SDexuan Cui netdev_stats_to_stats64(st, &ndev->stats); 365ca9c54d2SDexuan Cui 366ca9c54d2SDexuan Cui for (q = 0; q < num_queues; q++) { 367f90f8420SHaiyang Zhang rx_stats = &apc->rxqs[q]->stats; 368ca9c54d2SDexuan Cui 369ca9c54d2SDexuan Cui do { 370068c38adSThomas Gleixner start = u64_stats_fetch_begin(&rx_stats->syncp); 371f90f8420SHaiyang Zhang packets = rx_stats->packets; 372f90f8420SHaiyang Zhang bytes = rx_stats->bytes; 373068c38adSThomas Gleixner } while (u64_stats_fetch_retry(&rx_stats->syncp, start)); 374ca9c54d2SDexuan Cui 375ca9c54d2SDexuan Cui st->rx_packets += packets; 376ca9c54d2SDexuan Cui st->rx_bytes += bytes; 377ca9c54d2SDexuan Cui } 378ca9c54d2SDexuan Cui 379ca9c54d2SDexuan Cui for (q = 0; q < num_queues; q++) { 380f90f8420SHaiyang Zhang tx_stats = &apc->tx_qp[q].txq.stats; 381ca9c54d2SDexuan Cui 382ca9c54d2SDexuan Cui do { 383068c38adSThomas Gleixner start = u64_stats_fetch_begin(&tx_stats->syncp); 384f90f8420SHaiyang Zhang packets = tx_stats->packets; 385f90f8420SHaiyang Zhang bytes = tx_stats->bytes; 386068c38adSThomas Gleixner } while (u64_stats_fetch_retry(&tx_stats->syncp, start)); 387ca9c54d2SDexuan Cui 388ca9c54d2SDexuan Cui st->tx_packets += packets; 389ca9c54d2SDexuan Cui st->tx_bytes += bytes; 390ca9c54d2SDexuan Cui } 391ca9c54d2SDexuan Cui } 392ca9c54d2SDexuan Cui 393ca9c54d2SDexuan Cui static int mana_get_tx_queue(struct net_device *ndev, struct sk_buff *skb, 394ca9c54d2SDexuan Cui int old_q) 395ca9c54d2SDexuan Cui { 396ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 397ca9c54d2SDexuan Cui u32 hash = skb_get_hash(skb); 398ca9c54d2SDexuan Cui struct sock *sk = skb->sk; 399ca9c54d2SDexuan Cui int txq; 400ca9c54d2SDexuan Cui 401ca9c54d2SDexuan Cui txq = apc->indir_table[hash & MANA_INDIRECT_TABLE_MASK]; 402ca9c54d2SDexuan Cui 403ca9c54d2SDexuan Cui if (txq != old_q && sk && sk_fullsock(sk) && 404ca9c54d2SDexuan Cui rcu_access_pointer(sk->sk_dst_cache)) 405ca9c54d2SDexuan Cui sk_tx_queue_set(sk, txq); 406ca9c54d2SDexuan Cui 407ca9c54d2SDexuan Cui return txq; 408ca9c54d2SDexuan Cui } 409ca9c54d2SDexuan Cui 410ca9c54d2SDexuan Cui static u16 mana_select_queue(struct net_device *ndev, struct sk_buff *skb, 411ca9c54d2SDexuan Cui struct net_device *sb_dev) 412ca9c54d2SDexuan Cui { 413ca9c54d2SDexuan Cui int txq; 414ca9c54d2SDexuan Cui 415ca9c54d2SDexuan Cui if (ndev->real_num_tx_queues == 1) 416ca9c54d2SDexuan Cui return 0; 417ca9c54d2SDexuan Cui 418ca9c54d2SDexuan Cui txq = sk_tx_queue_get(skb->sk); 419ca9c54d2SDexuan Cui 420ca9c54d2SDexuan Cui if (txq < 0 || skb->ooo_okay || txq >= ndev->real_num_tx_queues) { 421ca9c54d2SDexuan Cui if (skb_rx_queue_recorded(skb)) 422ca9c54d2SDexuan Cui txq = skb_get_rx_queue(skb); 423ca9c54d2SDexuan Cui else 424ca9c54d2SDexuan Cui txq = mana_get_tx_queue(ndev, skb, txq); 425ca9c54d2SDexuan Cui } 426ca9c54d2SDexuan Cui 427ca9c54d2SDexuan Cui return txq; 428ca9c54d2SDexuan Cui } 429ca9c54d2SDexuan Cui 43080f6215bSHaiyang Zhang /* Release pre-allocated RX buffers */ 43180f6215bSHaiyang Zhang static void mana_pre_dealloc_rxbufs(struct mana_port_context *mpc) 43280f6215bSHaiyang Zhang { 43380f6215bSHaiyang Zhang struct device *dev; 43480f6215bSHaiyang Zhang int i; 43580f6215bSHaiyang Zhang 43680f6215bSHaiyang Zhang dev = mpc->ac->gdma_dev->gdma_context->dev; 43780f6215bSHaiyang Zhang 43880f6215bSHaiyang Zhang if (!mpc->rxbufs_pre) 43980f6215bSHaiyang Zhang goto out1; 44080f6215bSHaiyang Zhang 44180f6215bSHaiyang Zhang if (!mpc->das_pre) 44280f6215bSHaiyang Zhang goto out2; 44380f6215bSHaiyang Zhang 44480f6215bSHaiyang Zhang while (mpc->rxbpre_total) { 44580f6215bSHaiyang Zhang i = --mpc->rxbpre_total; 44680f6215bSHaiyang Zhang dma_unmap_single(dev, mpc->das_pre[i], mpc->rxbpre_datasize, 44780f6215bSHaiyang Zhang DMA_FROM_DEVICE); 44880f6215bSHaiyang Zhang put_page(virt_to_head_page(mpc->rxbufs_pre[i])); 44980f6215bSHaiyang Zhang } 45080f6215bSHaiyang Zhang 45180f6215bSHaiyang Zhang kfree(mpc->das_pre); 45280f6215bSHaiyang Zhang mpc->das_pre = NULL; 45380f6215bSHaiyang Zhang 45480f6215bSHaiyang Zhang out2: 45580f6215bSHaiyang Zhang kfree(mpc->rxbufs_pre); 45680f6215bSHaiyang Zhang mpc->rxbufs_pre = NULL; 45780f6215bSHaiyang Zhang 45880f6215bSHaiyang Zhang out1: 45980f6215bSHaiyang Zhang mpc->rxbpre_datasize = 0; 46080f6215bSHaiyang Zhang mpc->rxbpre_alloc_size = 0; 46180f6215bSHaiyang Zhang mpc->rxbpre_headroom = 0; 46280f6215bSHaiyang Zhang } 46380f6215bSHaiyang Zhang 46480f6215bSHaiyang Zhang /* Get a buffer from the pre-allocated RX buffers */ 46580f6215bSHaiyang Zhang static void *mana_get_rxbuf_pre(struct mana_rxq *rxq, dma_addr_t *da) 46680f6215bSHaiyang Zhang { 46780f6215bSHaiyang Zhang struct net_device *ndev = rxq->ndev; 46880f6215bSHaiyang Zhang struct mana_port_context *mpc; 46980f6215bSHaiyang Zhang void *va; 47080f6215bSHaiyang Zhang 47180f6215bSHaiyang Zhang mpc = netdev_priv(ndev); 47280f6215bSHaiyang Zhang 47380f6215bSHaiyang Zhang if (!mpc->rxbufs_pre || !mpc->das_pre || !mpc->rxbpre_total) { 47480f6215bSHaiyang Zhang netdev_err(ndev, "No RX pre-allocated bufs\n"); 47580f6215bSHaiyang Zhang return NULL; 47680f6215bSHaiyang Zhang } 47780f6215bSHaiyang Zhang 47880f6215bSHaiyang Zhang /* Check sizes to catch unexpected coding error */ 47980f6215bSHaiyang Zhang if (mpc->rxbpre_datasize != rxq->datasize) { 48080f6215bSHaiyang Zhang netdev_err(ndev, "rxbpre_datasize mismatch: %u: %u\n", 48180f6215bSHaiyang Zhang mpc->rxbpre_datasize, rxq->datasize); 48280f6215bSHaiyang Zhang return NULL; 48380f6215bSHaiyang Zhang } 48480f6215bSHaiyang Zhang 48580f6215bSHaiyang Zhang if (mpc->rxbpre_alloc_size != rxq->alloc_size) { 48680f6215bSHaiyang Zhang netdev_err(ndev, "rxbpre_alloc_size mismatch: %u: %u\n", 48780f6215bSHaiyang Zhang mpc->rxbpre_alloc_size, rxq->alloc_size); 48880f6215bSHaiyang Zhang return NULL; 48980f6215bSHaiyang Zhang } 49080f6215bSHaiyang Zhang 49180f6215bSHaiyang Zhang if (mpc->rxbpre_headroom != rxq->headroom) { 49280f6215bSHaiyang Zhang netdev_err(ndev, "rxbpre_headroom mismatch: %u: %u\n", 49380f6215bSHaiyang Zhang mpc->rxbpre_headroom, rxq->headroom); 49480f6215bSHaiyang Zhang return NULL; 49580f6215bSHaiyang Zhang } 49680f6215bSHaiyang Zhang 49780f6215bSHaiyang Zhang mpc->rxbpre_total--; 49880f6215bSHaiyang Zhang 49980f6215bSHaiyang Zhang *da = mpc->das_pre[mpc->rxbpre_total]; 50080f6215bSHaiyang Zhang va = mpc->rxbufs_pre[mpc->rxbpre_total]; 50180f6215bSHaiyang Zhang mpc->rxbufs_pre[mpc->rxbpre_total] = NULL; 50280f6215bSHaiyang Zhang 50380f6215bSHaiyang Zhang /* Deallocate the array after all buffers are gone */ 50480f6215bSHaiyang Zhang if (!mpc->rxbpre_total) 50580f6215bSHaiyang Zhang mana_pre_dealloc_rxbufs(mpc); 50680f6215bSHaiyang Zhang 50780f6215bSHaiyang Zhang return va; 50880f6215bSHaiyang Zhang } 50980f6215bSHaiyang Zhang 51080f6215bSHaiyang Zhang /* Get RX buffer's data size, alloc size, XDP headroom based on MTU */ 51180f6215bSHaiyang Zhang static void mana_get_rxbuf_cfg(int mtu, u32 *datasize, u32 *alloc_size, 51280f6215bSHaiyang Zhang u32 *headroom) 51380f6215bSHaiyang Zhang { 51480f6215bSHaiyang Zhang if (mtu > MANA_XDP_MTU_MAX) 51580f6215bSHaiyang Zhang *headroom = 0; /* no support for XDP */ 51680f6215bSHaiyang Zhang else 51780f6215bSHaiyang Zhang *headroom = XDP_PACKET_HEADROOM; 51880f6215bSHaiyang Zhang 51980f6215bSHaiyang Zhang *alloc_size = mtu + MANA_RXBUF_PAD + *headroom; 52080f6215bSHaiyang Zhang 52180f6215bSHaiyang Zhang *datasize = ALIGN(mtu + ETH_HLEN, MANA_RX_DATA_ALIGN); 52280f6215bSHaiyang Zhang } 52380f6215bSHaiyang Zhang 52480f6215bSHaiyang Zhang static int mana_pre_alloc_rxbufs(struct mana_port_context *mpc, int new_mtu) 52580f6215bSHaiyang Zhang { 52680f6215bSHaiyang Zhang struct device *dev; 52780f6215bSHaiyang Zhang struct page *page; 52880f6215bSHaiyang Zhang dma_addr_t da; 52980f6215bSHaiyang Zhang int num_rxb; 53080f6215bSHaiyang Zhang void *va; 53180f6215bSHaiyang Zhang int i; 53280f6215bSHaiyang Zhang 53380f6215bSHaiyang Zhang mana_get_rxbuf_cfg(new_mtu, &mpc->rxbpre_datasize, 53480f6215bSHaiyang Zhang &mpc->rxbpre_alloc_size, &mpc->rxbpre_headroom); 53580f6215bSHaiyang Zhang 53680f6215bSHaiyang Zhang dev = mpc->ac->gdma_dev->gdma_context->dev; 53780f6215bSHaiyang Zhang 53880f6215bSHaiyang Zhang num_rxb = mpc->num_queues * RX_BUFFERS_PER_QUEUE; 53980f6215bSHaiyang Zhang 54080f6215bSHaiyang Zhang WARN(mpc->rxbufs_pre, "mana rxbufs_pre exists\n"); 54180f6215bSHaiyang Zhang mpc->rxbufs_pre = kmalloc_array(num_rxb, sizeof(void *), GFP_KERNEL); 54280f6215bSHaiyang Zhang if (!mpc->rxbufs_pre) 54380f6215bSHaiyang Zhang goto error; 54480f6215bSHaiyang Zhang 54580f6215bSHaiyang Zhang mpc->das_pre = kmalloc_array(num_rxb, sizeof(dma_addr_t), GFP_KERNEL); 54680f6215bSHaiyang Zhang if (!mpc->das_pre) 54780f6215bSHaiyang Zhang goto error; 54880f6215bSHaiyang Zhang 54980f6215bSHaiyang Zhang mpc->rxbpre_total = 0; 55080f6215bSHaiyang Zhang 55180f6215bSHaiyang Zhang for (i = 0; i < num_rxb; i++) { 55280f6215bSHaiyang Zhang if (mpc->rxbpre_alloc_size > PAGE_SIZE) { 55380f6215bSHaiyang Zhang va = netdev_alloc_frag(mpc->rxbpre_alloc_size); 55480f6215bSHaiyang Zhang if (!va) 55580f6215bSHaiyang Zhang goto error; 55680f6215bSHaiyang Zhang } else { 55780f6215bSHaiyang Zhang page = dev_alloc_page(); 55880f6215bSHaiyang Zhang if (!page) 55980f6215bSHaiyang Zhang goto error; 56080f6215bSHaiyang Zhang 56180f6215bSHaiyang Zhang va = page_to_virt(page); 56280f6215bSHaiyang Zhang } 56380f6215bSHaiyang Zhang 56480f6215bSHaiyang Zhang da = dma_map_single(dev, va + mpc->rxbpre_headroom, 56580f6215bSHaiyang Zhang mpc->rxbpre_datasize, DMA_FROM_DEVICE); 56680f6215bSHaiyang Zhang if (dma_mapping_error(dev, da)) { 56780f6215bSHaiyang Zhang put_page(virt_to_head_page(va)); 56880f6215bSHaiyang Zhang goto error; 56980f6215bSHaiyang Zhang } 57080f6215bSHaiyang Zhang 57180f6215bSHaiyang Zhang mpc->rxbufs_pre[i] = va; 57280f6215bSHaiyang Zhang mpc->das_pre[i] = da; 57380f6215bSHaiyang Zhang mpc->rxbpre_total = i + 1; 57480f6215bSHaiyang Zhang } 57580f6215bSHaiyang Zhang 57680f6215bSHaiyang Zhang return 0; 57780f6215bSHaiyang Zhang 57880f6215bSHaiyang Zhang error: 57980f6215bSHaiyang Zhang mana_pre_dealloc_rxbufs(mpc); 58080f6215bSHaiyang Zhang return -ENOMEM; 58180f6215bSHaiyang Zhang } 58280f6215bSHaiyang Zhang 58380f6215bSHaiyang Zhang static int mana_change_mtu(struct net_device *ndev, int new_mtu) 58480f6215bSHaiyang Zhang { 58580f6215bSHaiyang Zhang struct mana_port_context *mpc = netdev_priv(ndev); 58680f6215bSHaiyang Zhang unsigned int old_mtu = ndev->mtu; 58780f6215bSHaiyang Zhang int err; 58880f6215bSHaiyang Zhang 58980f6215bSHaiyang Zhang /* Pre-allocate buffers to prevent failure in mana_attach later */ 59080f6215bSHaiyang Zhang err = mana_pre_alloc_rxbufs(mpc, new_mtu); 59180f6215bSHaiyang Zhang if (err) { 59280f6215bSHaiyang Zhang netdev_err(ndev, "Insufficient memory for new MTU\n"); 59380f6215bSHaiyang Zhang return err; 59480f6215bSHaiyang Zhang } 59580f6215bSHaiyang Zhang 59680f6215bSHaiyang Zhang err = mana_detach(ndev, false); 59780f6215bSHaiyang Zhang if (err) { 59880f6215bSHaiyang Zhang netdev_err(ndev, "mana_detach failed: %d\n", err); 59980f6215bSHaiyang Zhang goto out; 60080f6215bSHaiyang Zhang } 60180f6215bSHaiyang Zhang 60280f6215bSHaiyang Zhang ndev->mtu = new_mtu; 60380f6215bSHaiyang Zhang 60480f6215bSHaiyang Zhang err = mana_attach(ndev); 60580f6215bSHaiyang Zhang if (err) { 60680f6215bSHaiyang Zhang netdev_err(ndev, "mana_attach failed: %d\n", err); 60780f6215bSHaiyang Zhang ndev->mtu = old_mtu; 60880f6215bSHaiyang Zhang } 60980f6215bSHaiyang Zhang 61080f6215bSHaiyang Zhang out: 61180f6215bSHaiyang Zhang mana_pre_dealloc_rxbufs(mpc); 61280f6215bSHaiyang Zhang return err; 61380f6215bSHaiyang Zhang } 61480f6215bSHaiyang Zhang 615ca9c54d2SDexuan Cui static const struct net_device_ops mana_devops = { 616ca9c54d2SDexuan Cui .ndo_open = mana_open, 617ca9c54d2SDexuan Cui .ndo_stop = mana_close, 618ca9c54d2SDexuan Cui .ndo_select_queue = mana_select_queue, 619ca9c54d2SDexuan Cui .ndo_start_xmit = mana_start_xmit, 620ca9c54d2SDexuan Cui .ndo_validate_addr = eth_validate_addr, 621ca9c54d2SDexuan Cui .ndo_get_stats64 = mana_get_stats64, 622ed5356b5SHaiyang Zhang .ndo_bpf = mana_bpf, 6237a8938cdSHaiyang Zhang .ndo_xdp_xmit = mana_xdp_xmit, 62480f6215bSHaiyang Zhang .ndo_change_mtu = mana_change_mtu, 625ca9c54d2SDexuan Cui }; 626ca9c54d2SDexuan Cui 627ca9c54d2SDexuan Cui static void mana_cleanup_port_context(struct mana_port_context *apc) 628ca9c54d2SDexuan Cui { 629ca9c54d2SDexuan Cui kfree(apc->rxqs); 630ca9c54d2SDexuan Cui apc->rxqs = NULL; 631ca9c54d2SDexuan Cui } 632ca9c54d2SDexuan Cui 633ca9c54d2SDexuan Cui static int mana_init_port_context(struct mana_port_context *apc) 634ca9c54d2SDexuan Cui { 635ca9c54d2SDexuan Cui apc->rxqs = kcalloc(apc->num_queues, sizeof(struct mana_rxq *), 636ca9c54d2SDexuan Cui GFP_KERNEL); 637ca9c54d2SDexuan Cui 638ca9c54d2SDexuan Cui return !apc->rxqs ? -ENOMEM : 0; 639ca9c54d2SDexuan Cui } 640ca9c54d2SDexuan Cui 641ca9c54d2SDexuan Cui static int mana_send_request(struct mana_context *ac, void *in_buf, 642ca9c54d2SDexuan Cui u32 in_len, void *out_buf, u32 out_len) 643ca9c54d2SDexuan Cui { 644ca9c54d2SDexuan Cui struct gdma_context *gc = ac->gdma_dev->gdma_context; 645ca9c54d2SDexuan Cui struct gdma_resp_hdr *resp = out_buf; 646ca9c54d2SDexuan Cui struct gdma_req_hdr *req = in_buf; 647ca9c54d2SDexuan Cui struct device *dev = gc->dev; 648ca9c54d2SDexuan Cui static atomic_t activity_id; 649ca9c54d2SDexuan Cui int err; 650ca9c54d2SDexuan Cui 651ca9c54d2SDexuan Cui req->dev_id = gc->mana.dev_id; 652ca9c54d2SDexuan Cui req->activity_id = atomic_inc_return(&activity_id); 653ca9c54d2SDexuan Cui 654ca9c54d2SDexuan Cui err = mana_gd_send_request(gc, in_len, in_buf, out_len, 655ca9c54d2SDexuan Cui out_buf); 656ca9c54d2SDexuan Cui if (err || resp->status) { 657ca9c54d2SDexuan Cui dev_err(dev, "Failed to send mana message: %d, 0x%x\n", 658ca9c54d2SDexuan Cui err, resp->status); 659ca9c54d2SDexuan Cui return err ? err : -EPROTO; 660ca9c54d2SDexuan Cui } 661ca9c54d2SDexuan Cui 662ca9c54d2SDexuan Cui if (req->dev_id.as_uint32 != resp->dev_id.as_uint32 || 663ca9c54d2SDexuan Cui req->activity_id != resp->activity_id) { 664ca9c54d2SDexuan Cui dev_err(dev, "Unexpected mana message response: %x,%x,%x,%x\n", 665ca9c54d2SDexuan Cui req->dev_id.as_uint32, resp->dev_id.as_uint32, 666ca9c54d2SDexuan Cui req->activity_id, resp->activity_id); 667ca9c54d2SDexuan Cui return -EPROTO; 668ca9c54d2SDexuan Cui } 669ca9c54d2SDexuan Cui 670ca9c54d2SDexuan Cui return 0; 671ca9c54d2SDexuan Cui } 672ca9c54d2SDexuan Cui 673ca9c54d2SDexuan Cui static int mana_verify_resp_hdr(const struct gdma_resp_hdr *resp_hdr, 674ca9c54d2SDexuan Cui const enum mana_command_code expected_code, 675ca9c54d2SDexuan Cui const u32 min_size) 676ca9c54d2SDexuan Cui { 677ca9c54d2SDexuan Cui if (resp_hdr->response.msg_type != expected_code) 678ca9c54d2SDexuan Cui return -EPROTO; 679ca9c54d2SDexuan Cui 680ca9c54d2SDexuan Cui if (resp_hdr->response.msg_version < GDMA_MESSAGE_V1) 681ca9c54d2SDexuan Cui return -EPROTO; 682ca9c54d2SDexuan Cui 683ca9c54d2SDexuan Cui if (resp_hdr->response.msg_size < min_size) 684ca9c54d2SDexuan Cui return -EPROTO; 685ca9c54d2SDexuan Cui 686ca9c54d2SDexuan Cui return 0; 687ca9c54d2SDexuan Cui } 688ca9c54d2SDexuan Cui 6891566e7d6SDexuan Cui static int mana_pf_register_hw_vport(struct mana_port_context *apc) 6901566e7d6SDexuan Cui { 6911566e7d6SDexuan Cui struct mana_register_hw_vport_resp resp = {}; 6921566e7d6SDexuan Cui struct mana_register_hw_vport_req req = {}; 6931566e7d6SDexuan Cui int err; 6941566e7d6SDexuan Cui 6951566e7d6SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_REGISTER_HW_PORT, 6961566e7d6SDexuan Cui sizeof(req), sizeof(resp)); 6971566e7d6SDexuan Cui req.attached_gfid = 1; 6981566e7d6SDexuan Cui req.is_pf_default_vport = 1; 6991566e7d6SDexuan Cui req.allow_all_ether_types = 1; 7001566e7d6SDexuan Cui 7011566e7d6SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 7021566e7d6SDexuan Cui sizeof(resp)); 7031566e7d6SDexuan Cui if (err) { 7041566e7d6SDexuan Cui netdev_err(apc->ndev, "Failed to register hw vPort: %d\n", err); 7051566e7d6SDexuan Cui return err; 7061566e7d6SDexuan Cui } 7071566e7d6SDexuan Cui 7081566e7d6SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_REGISTER_HW_PORT, 7091566e7d6SDexuan Cui sizeof(resp)); 7101566e7d6SDexuan Cui if (err || resp.hdr.status) { 7111566e7d6SDexuan Cui netdev_err(apc->ndev, "Failed to register hw vPort: %d, 0x%x\n", 7121566e7d6SDexuan Cui err, resp.hdr.status); 7131566e7d6SDexuan Cui return err ? err : -EPROTO; 7141566e7d6SDexuan Cui } 7151566e7d6SDexuan Cui 7161566e7d6SDexuan Cui apc->port_handle = resp.hw_vport_handle; 7171566e7d6SDexuan Cui return 0; 7181566e7d6SDexuan Cui } 7191566e7d6SDexuan Cui 7201566e7d6SDexuan Cui static void mana_pf_deregister_hw_vport(struct mana_port_context *apc) 7211566e7d6SDexuan Cui { 7221566e7d6SDexuan Cui struct mana_deregister_hw_vport_resp resp = {}; 7231566e7d6SDexuan Cui struct mana_deregister_hw_vport_req req = {}; 7241566e7d6SDexuan Cui int err; 7251566e7d6SDexuan Cui 7261566e7d6SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_DEREGISTER_HW_PORT, 7271566e7d6SDexuan Cui sizeof(req), sizeof(resp)); 7281566e7d6SDexuan Cui req.hw_vport_handle = apc->port_handle; 7291566e7d6SDexuan Cui 7301566e7d6SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 7311566e7d6SDexuan Cui sizeof(resp)); 7321566e7d6SDexuan Cui if (err) { 7331566e7d6SDexuan Cui netdev_err(apc->ndev, "Failed to unregister hw vPort: %d\n", 7341566e7d6SDexuan Cui err); 7351566e7d6SDexuan Cui return; 7361566e7d6SDexuan Cui } 7371566e7d6SDexuan Cui 7381566e7d6SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_DEREGISTER_HW_PORT, 7391566e7d6SDexuan Cui sizeof(resp)); 7401566e7d6SDexuan Cui if (err || resp.hdr.status) 7411566e7d6SDexuan Cui netdev_err(apc->ndev, 7421566e7d6SDexuan Cui "Failed to deregister hw vPort: %d, 0x%x\n", 7431566e7d6SDexuan Cui err, resp.hdr.status); 7441566e7d6SDexuan Cui } 7451566e7d6SDexuan Cui 7461566e7d6SDexuan Cui static int mana_pf_register_filter(struct mana_port_context *apc) 7471566e7d6SDexuan Cui { 7481566e7d6SDexuan Cui struct mana_register_filter_resp resp = {}; 7491566e7d6SDexuan Cui struct mana_register_filter_req req = {}; 7501566e7d6SDexuan Cui int err; 7511566e7d6SDexuan Cui 7521566e7d6SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_REGISTER_FILTER, 7531566e7d6SDexuan Cui sizeof(req), sizeof(resp)); 7541566e7d6SDexuan Cui req.vport = apc->port_handle; 7551566e7d6SDexuan Cui memcpy(req.mac_addr, apc->mac_addr, ETH_ALEN); 7561566e7d6SDexuan Cui 7571566e7d6SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 7581566e7d6SDexuan Cui sizeof(resp)); 7591566e7d6SDexuan Cui if (err) { 7601566e7d6SDexuan Cui netdev_err(apc->ndev, "Failed to register filter: %d\n", err); 7611566e7d6SDexuan Cui return err; 7621566e7d6SDexuan Cui } 7631566e7d6SDexuan Cui 7641566e7d6SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_REGISTER_FILTER, 7651566e7d6SDexuan Cui sizeof(resp)); 7661566e7d6SDexuan Cui if (err || resp.hdr.status) { 7671566e7d6SDexuan Cui netdev_err(apc->ndev, "Failed to register filter: %d, 0x%x\n", 7681566e7d6SDexuan Cui err, resp.hdr.status); 7691566e7d6SDexuan Cui return err ? err : -EPROTO; 7701566e7d6SDexuan Cui } 7711566e7d6SDexuan Cui 7721566e7d6SDexuan Cui apc->pf_filter_handle = resp.filter_handle; 7731566e7d6SDexuan Cui return 0; 7741566e7d6SDexuan Cui } 7751566e7d6SDexuan Cui 7761566e7d6SDexuan Cui static void mana_pf_deregister_filter(struct mana_port_context *apc) 7771566e7d6SDexuan Cui { 7781566e7d6SDexuan Cui struct mana_deregister_filter_resp resp = {}; 7791566e7d6SDexuan Cui struct mana_deregister_filter_req req = {}; 7801566e7d6SDexuan Cui int err; 7811566e7d6SDexuan Cui 7821566e7d6SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_DEREGISTER_FILTER, 7831566e7d6SDexuan Cui sizeof(req), sizeof(resp)); 7841566e7d6SDexuan Cui req.filter_handle = apc->pf_filter_handle; 7851566e7d6SDexuan Cui 7861566e7d6SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 7871566e7d6SDexuan Cui sizeof(resp)); 7881566e7d6SDexuan Cui if (err) { 7891566e7d6SDexuan Cui netdev_err(apc->ndev, "Failed to unregister filter: %d\n", 7901566e7d6SDexuan Cui err); 7911566e7d6SDexuan Cui return; 7921566e7d6SDexuan Cui } 7931566e7d6SDexuan Cui 7941566e7d6SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_DEREGISTER_FILTER, 7951566e7d6SDexuan Cui sizeof(resp)); 7961566e7d6SDexuan Cui if (err || resp.hdr.status) 7971566e7d6SDexuan Cui netdev_err(apc->ndev, 7981566e7d6SDexuan Cui "Failed to deregister filter: %d, 0x%x\n", 7991566e7d6SDexuan Cui err, resp.hdr.status); 8001566e7d6SDexuan Cui } 8011566e7d6SDexuan Cui 802ca9c54d2SDexuan Cui static int mana_query_device_cfg(struct mana_context *ac, u32 proto_major_ver, 803ca9c54d2SDexuan Cui u32 proto_minor_ver, u32 proto_micro_ver, 804ca9c54d2SDexuan Cui u16 *max_num_vports) 805ca9c54d2SDexuan Cui { 806ca9c54d2SDexuan Cui struct gdma_context *gc = ac->gdma_dev->gdma_context; 807ca9c54d2SDexuan Cui struct mana_query_device_cfg_resp resp = {}; 808ca9c54d2SDexuan Cui struct mana_query_device_cfg_req req = {}; 809ca9c54d2SDexuan Cui struct device *dev = gc->dev; 810ca9c54d2SDexuan Cui int err = 0; 811ca9c54d2SDexuan Cui 812ca9c54d2SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_DEV_CONFIG, 813ca9c54d2SDexuan Cui sizeof(req), sizeof(resp)); 81480f6215bSHaiyang Zhang 81580f6215bSHaiyang Zhang req.hdr.resp.msg_version = GDMA_MESSAGE_V2; 81680f6215bSHaiyang Zhang 817ca9c54d2SDexuan Cui req.proto_major_ver = proto_major_ver; 818ca9c54d2SDexuan Cui req.proto_minor_ver = proto_minor_ver; 819ca9c54d2SDexuan Cui req.proto_micro_ver = proto_micro_ver; 820ca9c54d2SDexuan Cui 821ca9c54d2SDexuan Cui err = mana_send_request(ac, &req, sizeof(req), &resp, sizeof(resp)); 822ca9c54d2SDexuan Cui if (err) { 823ca9c54d2SDexuan Cui dev_err(dev, "Failed to query config: %d", err); 824ca9c54d2SDexuan Cui return err; 825ca9c54d2SDexuan Cui } 826ca9c54d2SDexuan Cui 827ca9c54d2SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_DEV_CONFIG, 828ca9c54d2SDexuan Cui sizeof(resp)); 829ca9c54d2SDexuan Cui if (err || resp.hdr.status) { 830ca9c54d2SDexuan Cui dev_err(dev, "Invalid query result: %d, 0x%x\n", err, 831ca9c54d2SDexuan Cui resp.hdr.status); 832ca9c54d2SDexuan Cui if (!err) 833ca9c54d2SDexuan Cui err = -EPROTO; 834ca9c54d2SDexuan Cui return err; 835ca9c54d2SDexuan Cui } 836ca9c54d2SDexuan Cui 837ca9c54d2SDexuan Cui *max_num_vports = resp.max_num_vports; 838ca9c54d2SDexuan Cui 83980f6215bSHaiyang Zhang if (resp.hdr.response.msg_version == GDMA_MESSAGE_V2) 84080f6215bSHaiyang Zhang gc->adapter_mtu = resp.adapter_mtu; 84180f6215bSHaiyang Zhang else 84280f6215bSHaiyang Zhang gc->adapter_mtu = ETH_FRAME_LEN; 84380f6215bSHaiyang Zhang 844ca9c54d2SDexuan Cui return 0; 845ca9c54d2SDexuan Cui } 846ca9c54d2SDexuan Cui 847ca9c54d2SDexuan Cui static int mana_query_vport_cfg(struct mana_port_context *apc, u32 vport_index, 848ca9c54d2SDexuan Cui u32 *max_sq, u32 *max_rq, u32 *num_indir_entry) 849ca9c54d2SDexuan Cui { 850ca9c54d2SDexuan Cui struct mana_query_vport_cfg_resp resp = {}; 851ca9c54d2SDexuan Cui struct mana_query_vport_cfg_req req = {}; 852ca9c54d2SDexuan Cui int err; 853ca9c54d2SDexuan Cui 854ca9c54d2SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_VPORT_CONFIG, 855ca9c54d2SDexuan Cui sizeof(req), sizeof(resp)); 856ca9c54d2SDexuan Cui 857ca9c54d2SDexuan Cui req.vport_index = vport_index; 858ca9c54d2SDexuan Cui 859ca9c54d2SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 860ca9c54d2SDexuan Cui sizeof(resp)); 861ca9c54d2SDexuan Cui if (err) 862ca9c54d2SDexuan Cui return err; 863ca9c54d2SDexuan Cui 864ca9c54d2SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_VPORT_CONFIG, 865ca9c54d2SDexuan Cui sizeof(resp)); 866ca9c54d2SDexuan Cui if (err) 867ca9c54d2SDexuan Cui return err; 868ca9c54d2SDexuan Cui 869ca9c54d2SDexuan Cui if (resp.hdr.status) 870ca9c54d2SDexuan Cui return -EPROTO; 871ca9c54d2SDexuan Cui 872ca9c54d2SDexuan Cui *max_sq = resp.max_num_sq; 873ca9c54d2SDexuan Cui *max_rq = resp.max_num_rq; 874ca9c54d2SDexuan Cui *num_indir_entry = resp.num_indirection_ent; 875ca9c54d2SDexuan Cui 876ca9c54d2SDexuan Cui apc->port_handle = resp.vport; 877ca9c54d2SDexuan Cui ether_addr_copy(apc->mac_addr, resp.mac_addr); 878ca9c54d2SDexuan Cui 879ca9c54d2SDexuan Cui return 0; 880ca9c54d2SDexuan Cui } 881ca9c54d2SDexuan Cui 882b5c1c985SLong Li void mana_uncfg_vport(struct mana_port_context *apc) 883b5c1c985SLong Li { 884b5c1c985SLong Li mutex_lock(&apc->vport_mutex); 885b5c1c985SLong Li apc->vport_use_count--; 886b5c1c985SLong Li WARN_ON(apc->vport_use_count < 0); 887b5c1c985SLong Li mutex_unlock(&apc->vport_mutex); 888b5c1c985SLong Li } 889b5c1c985SLong Li EXPORT_SYMBOL_NS(mana_uncfg_vport, NET_MANA); 890b5c1c985SLong Li 891b5c1c985SLong Li int mana_cfg_vport(struct mana_port_context *apc, u32 protection_dom_id, 892ca9c54d2SDexuan Cui u32 doorbell_pg_id) 893ca9c54d2SDexuan Cui { 894ca9c54d2SDexuan Cui struct mana_config_vport_resp resp = {}; 895ca9c54d2SDexuan Cui struct mana_config_vport_req req = {}; 896ca9c54d2SDexuan Cui int err; 897ca9c54d2SDexuan Cui 898b5c1c985SLong Li /* This function is used to program the Ethernet port in the hardware 899b5c1c985SLong Li * table. It can be called from the Ethernet driver or the RDMA driver. 900b5c1c985SLong Li * 901b5c1c985SLong Li * For Ethernet usage, the hardware supports only one active user on a 902b5c1c985SLong Li * physical port. The driver checks on the port usage before programming 903b5c1c985SLong Li * the hardware when creating the RAW QP (RDMA driver) or exposing the 904b5c1c985SLong Li * device to kernel NET layer (Ethernet driver). 905b5c1c985SLong Li * 906b5c1c985SLong Li * Because the RDMA driver doesn't know in advance which QP type the 907b5c1c985SLong Li * user will create, it exposes the device with all its ports. The user 908b5c1c985SLong Li * may not be able to create RAW QP on a port if this port is already 909b5c1c985SLong Li * in used by the Ethernet driver from the kernel. 910b5c1c985SLong Li * 911b5c1c985SLong Li * This physical port limitation only applies to the RAW QP. For RC QP, 912b5c1c985SLong Li * the hardware doesn't have this limitation. The user can create RC 913b5c1c985SLong Li * QPs on a physical port up to the hardware limits independent of the 914b5c1c985SLong Li * Ethernet usage on the same port. 915b5c1c985SLong Li */ 916b5c1c985SLong Li mutex_lock(&apc->vport_mutex); 917b5c1c985SLong Li if (apc->vport_use_count > 0) { 918b5c1c985SLong Li mutex_unlock(&apc->vport_mutex); 919b5c1c985SLong Li return -EBUSY; 920b5c1c985SLong Li } 921b5c1c985SLong Li apc->vport_use_count++; 922b5c1c985SLong Li mutex_unlock(&apc->vport_mutex); 923b5c1c985SLong Li 924ca9c54d2SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_CONFIG_VPORT_TX, 925ca9c54d2SDexuan Cui sizeof(req), sizeof(resp)); 926ca9c54d2SDexuan Cui req.vport = apc->port_handle; 927ca9c54d2SDexuan Cui req.pdid = protection_dom_id; 928ca9c54d2SDexuan Cui req.doorbell_pageid = doorbell_pg_id; 929ca9c54d2SDexuan Cui 930ca9c54d2SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 931ca9c54d2SDexuan Cui sizeof(resp)); 932ca9c54d2SDexuan Cui if (err) { 933ca9c54d2SDexuan Cui netdev_err(apc->ndev, "Failed to configure vPort: %d\n", err); 934ca9c54d2SDexuan Cui goto out; 935ca9c54d2SDexuan Cui } 936ca9c54d2SDexuan Cui 937ca9c54d2SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_TX, 938ca9c54d2SDexuan Cui sizeof(resp)); 939ca9c54d2SDexuan Cui if (err || resp.hdr.status) { 940ca9c54d2SDexuan Cui netdev_err(apc->ndev, "Failed to configure vPort: %d, 0x%x\n", 941ca9c54d2SDexuan Cui err, resp.hdr.status); 942ca9c54d2SDexuan Cui if (!err) 943ca9c54d2SDexuan Cui err = -EPROTO; 944ca9c54d2SDexuan Cui 945ca9c54d2SDexuan Cui goto out; 946ca9c54d2SDexuan Cui } 947ca9c54d2SDexuan Cui 948ca9c54d2SDexuan Cui apc->tx_shortform_allowed = resp.short_form_allowed; 949ca9c54d2SDexuan Cui apc->tx_vp_offset = resp.tx_vport_offset; 950b5c1c985SLong Li 951b5c1c985SLong Li netdev_info(apc->ndev, "Configured vPort %llu PD %u DB %u\n", 952b5c1c985SLong Li apc->port_handle, protection_dom_id, doorbell_pg_id); 953ca9c54d2SDexuan Cui out: 954b5c1c985SLong Li if (err) 955b5c1c985SLong Li mana_uncfg_vport(apc); 956b5c1c985SLong Li 957ca9c54d2SDexuan Cui return err; 958ca9c54d2SDexuan Cui } 959b5c1c985SLong Li EXPORT_SYMBOL_NS(mana_cfg_vport, NET_MANA); 960ca9c54d2SDexuan Cui 961ca9c54d2SDexuan Cui static int mana_cfg_vport_steering(struct mana_port_context *apc, 962ca9c54d2SDexuan Cui enum TRI_STATE rx, 963ca9c54d2SDexuan Cui bool update_default_rxobj, bool update_key, 964ca9c54d2SDexuan Cui bool update_tab) 965ca9c54d2SDexuan Cui { 966ca9c54d2SDexuan Cui u16 num_entries = MANA_INDIRECT_TABLE_SIZE; 967ca9c54d2SDexuan Cui struct mana_cfg_rx_steer_req *req = NULL; 968ca9c54d2SDexuan Cui struct mana_cfg_rx_steer_resp resp = {}; 969ca9c54d2SDexuan Cui struct net_device *ndev = apc->ndev; 970ca9c54d2SDexuan Cui mana_handle_t *req_indir_tab; 971ca9c54d2SDexuan Cui u32 req_buf_size; 972ca9c54d2SDexuan Cui int err; 973ca9c54d2SDexuan Cui 974ca9c54d2SDexuan Cui req_buf_size = sizeof(*req) + sizeof(mana_handle_t) * num_entries; 975ca9c54d2SDexuan Cui req = kzalloc(req_buf_size, GFP_KERNEL); 976ca9c54d2SDexuan Cui if (!req) 977ca9c54d2SDexuan Cui return -ENOMEM; 978ca9c54d2SDexuan Cui 979ca9c54d2SDexuan Cui mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size, 980ca9c54d2SDexuan Cui sizeof(resp)); 981ca9c54d2SDexuan Cui 982ca9c54d2SDexuan Cui req->vport = apc->port_handle; 983ca9c54d2SDexuan Cui req->num_indir_entries = num_entries; 984ca9c54d2SDexuan Cui req->indir_tab_offset = sizeof(*req); 985ca9c54d2SDexuan Cui req->rx_enable = rx; 986ca9c54d2SDexuan Cui req->rss_enable = apc->rss_state; 987ca9c54d2SDexuan Cui req->update_default_rxobj = update_default_rxobj; 988ca9c54d2SDexuan Cui req->update_hashkey = update_key; 989ca9c54d2SDexuan Cui req->update_indir_tab = update_tab; 990ca9c54d2SDexuan Cui req->default_rxobj = apc->default_rxobj; 991ca9c54d2SDexuan Cui 992ca9c54d2SDexuan Cui if (update_key) 993ca9c54d2SDexuan Cui memcpy(&req->hashkey, apc->hashkey, MANA_HASH_KEY_SIZE); 994ca9c54d2SDexuan Cui 995ca9c54d2SDexuan Cui if (update_tab) { 996ca9c54d2SDexuan Cui req_indir_tab = (mana_handle_t *)(req + 1); 997ca9c54d2SDexuan Cui memcpy(req_indir_tab, apc->rxobj_table, 998ca9c54d2SDexuan Cui req->num_indir_entries * sizeof(mana_handle_t)); 999ca9c54d2SDexuan Cui } 1000ca9c54d2SDexuan Cui 1001ca9c54d2SDexuan Cui err = mana_send_request(apc->ac, req, req_buf_size, &resp, 1002ca9c54d2SDexuan Cui sizeof(resp)); 1003ca9c54d2SDexuan Cui if (err) { 1004ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to configure vPort RX: %d\n", err); 1005ca9c54d2SDexuan Cui goto out; 1006ca9c54d2SDexuan Cui } 1007ca9c54d2SDexuan Cui 1008ca9c54d2SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_RX, 1009ca9c54d2SDexuan Cui sizeof(resp)); 1010ca9c54d2SDexuan Cui if (err) { 1011ca9c54d2SDexuan Cui netdev_err(ndev, "vPort RX configuration failed: %d\n", err); 1012ca9c54d2SDexuan Cui goto out; 1013ca9c54d2SDexuan Cui } 1014ca9c54d2SDexuan Cui 1015ca9c54d2SDexuan Cui if (resp.hdr.status) { 1016ca9c54d2SDexuan Cui netdev_err(ndev, "vPort RX configuration failed: 0x%x\n", 1017ca9c54d2SDexuan Cui resp.hdr.status); 1018ca9c54d2SDexuan Cui err = -EPROTO; 1019ca9c54d2SDexuan Cui } 1020b5c1c985SLong Li 1021b5c1c985SLong Li netdev_info(ndev, "Configured steering vPort %llu entries %u\n", 1022b5c1c985SLong Li apc->port_handle, num_entries); 1023ca9c54d2SDexuan Cui out: 1024ca9c54d2SDexuan Cui kfree(req); 1025ca9c54d2SDexuan Cui return err; 1026ca9c54d2SDexuan Cui } 1027ca9c54d2SDexuan Cui 10284c0ff7a1SLong Li int mana_create_wq_obj(struct mana_port_context *apc, 1029ca9c54d2SDexuan Cui mana_handle_t vport, 1030ca9c54d2SDexuan Cui u32 wq_type, struct mana_obj_spec *wq_spec, 1031ca9c54d2SDexuan Cui struct mana_obj_spec *cq_spec, 1032ca9c54d2SDexuan Cui mana_handle_t *wq_obj) 1033ca9c54d2SDexuan Cui { 1034ca9c54d2SDexuan Cui struct mana_create_wqobj_resp resp = {}; 1035ca9c54d2SDexuan Cui struct mana_create_wqobj_req req = {}; 1036ca9c54d2SDexuan Cui struct net_device *ndev = apc->ndev; 1037ca9c54d2SDexuan Cui int err; 1038ca9c54d2SDexuan Cui 1039ca9c54d2SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_CREATE_WQ_OBJ, 1040ca9c54d2SDexuan Cui sizeof(req), sizeof(resp)); 1041ca9c54d2SDexuan Cui req.vport = vport; 1042ca9c54d2SDexuan Cui req.wq_type = wq_type; 1043ca9c54d2SDexuan Cui req.wq_gdma_region = wq_spec->gdma_region; 1044ca9c54d2SDexuan Cui req.cq_gdma_region = cq_spec->gdma_region; 1045ca9c54d2SDexuan Cui req.wq_size = wq_spec->queue_size; 1046ca9c54d2SDexuan Cui req.cq_size = cq_spec->queue_size; 1047ca9c54d2SDexuan Cui req.cq_moderation_ctx_id = cq_spec->modr_ctx_id; 1048ca9c54d2SDexuan Cui req.cq_parent_qid = cq_spec->attached_eq; 1049ca9c54d2SDexuan Cui 1050ca9c54d2SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1051ca9c54d2SDexuan Cui sizeof(resp)); 1052ca9c54d2SDexuan Cui if (err) { 1053ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to create WQ object: %d\n", err); 1054ca9c54d2SDexuan Cui goto out; 1055ca9c54d2SDexuan Cui } 1056ca9c54d2SDexuan Cui 1057ca9c54d2SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_CREATE_WQ_OBJ, 1058ca9c54d2SDexuan Cui sizeof(resp)); 1059ca9c54d2SDexuan Cui if (err || resp.hdr.status) { 1060ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to create WQ object: %d, 0x%x\n", err, 1061ca9c54d2SDexuan Cui resp.hdr.status); 1062ca9c54d2SDexuan Cui if (!err) 1063ca9c54d2SDexuan Cui err = -EPROTO; 1064ca9c54d2SDexuan Cui goto out; 1065ca9c54d2SDexuan Cui } 1066ca9c54d2SDexuan Cui 1067ca9c54d2SDexuan Cui if (resp.wq_obj == INVALID_MANA_HANDLE) { 1068ca9c54d2SDexuan Cui netdev_err(ndev, "Got an invalid WQ object handle\n"); 1069ca9c54d2SDexuan Cui err = -EPROTO; 1070ca9c54d2SDexuan Cui goto out; 1071ca9c54d2SDexuan Cui } 1072ca9c54d2SDexuan Cui 1073ca9c54d2SDexuan Cui *wq_obj = resp.wq_obj; 1074ca9c54d2SDexuan Cui wq_spec->queue_index = resp.wq_id; 1075ca9c54d2SDexuan Cui cq_spec->queue_index = resp.cq_id; 1076ca9c54d2SDexuan Cui 1077ca9c54d2SDexuan Cui return 0; 1078ca9c54d2SDexuan Cui out: 1079ca9c54d2SDexuan Cui return err; 1080ca9c54d2SDexuan Cui } 10814c0ff7a1SLong Li EXPORT_SYMBOL_NS(mana_create_wq_obj, NET_MANA); 1082ca9c54d2SDexuan Cui 10834c0ff7a1SLong Li void mana_destroy_wq_obj(struct mana_port_context *apc, u32 wq_type, 1084ca9c54d2SDexuan Cui mana_handle_t wq_obj) 1085ca9c54d2SDexuan Cui { 1086ca9c54d2SDexuan Cui struct mana_destroy_wqobj_resp resp = {}; 1087ca9c54d2SDexuan Cui struct mana_destroy_wqobj_req req = {}; 1088ca9c54d2SDexuan Cui struct net_device *ndev = apc->ndev; 1089ca9c54d2SDexuan Cui int err; 1090ca9c54d2SDexuan Cui 1091ca9c54d2SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_DESTROY_WQ_OBJ, 1092ca9c54d2SDexuan Cui sizeof(req), sizeof(resp)); 1093ca9c54d2SDexuan Cui req.wq_type = wq_type; 1094ca9c54d2SDexuan Cui req.wq_obj_handle = wq_obj; 1095ca9c54d2SDexuan Cui 1096ca9c54d2SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1097ca9c54d2SDexuan Cui sizeof(resp)); 1098ca9c54d2SDexuan Cui if (err) { 1099ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to destroy WQ object: %d\n", err); 1100ca9c54d2SDexuan Cui return; 1101ca9c54d2SDexuan Cui } 1102ca9c54d2SDexuan Cui 1103ca9c54d2SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_DESTROY_WQ_OBJ, 1104ca9c54d2SDexuan Cui sizeof(resp)); 1105ca9c54d2SDexuan Cui if (err || resp.hdr.status) 1106ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to destroy WQ object: %d, 0x%x\n", err, 1107ca9c54d2SDexuan Cui resp.hdr.status); 1108ca9c54d2SDexuan Cui } 11094c0ff7a1SLong Li EXPORT_SYMBOL_NS(mana_destroy_wq_obj, NET_MANA); 1110ca9c54d2SDexuan Cui 11111e2d0824SHaiyang Zhang static void mana_destroy_eq(struct mana_context *ac) 1112ca9c54d2SDexuan Cui { 11131e2d0824SHaiyang Zhang struct gdma_context *gc = ac->gdma_dev->gdma_context; 1114ca9c54d2SDexuan Cui struct gdma_queue *eq; 1115ca9c54d2SDexuan Cui int i; 1116ca9c54d2SDexuan Cui 11171e2d0824SHaiyang Zhang if (!ac->eqs) 1118ca9c54d2SDexuan Cui return; 1119ca9c54d2SDexuan Cui 11201e2d0824SHaiyang Zhang for (i = 0; i < gc->max_num_queues; i++) { 11211e2d0824SHaiyang Zhang eq = ac->eqs[i].eq; 1122ca9c54d2SDexuan Cui if (!eq) 1123ca9c54d2SDexuan Cui continue; 1124ca9c54d2SDexuan Cui 1125ca9c54d2SDexuan Cui mana_gd_destroy_queue(gc, eq); 1126ca9c54d2SDexuan Cui } 1127ca9c54d2SDexuan Cui 11281e2d0824SHaiyang Zhang kfree(ac->eqs); 11291e2d0824SHaiyang Zhang ac->eqs = NULL; 1130ca9c54d2SDexuan Cui } 1131ca9c54d2SDexuan Cui 11321e2d0824SHaiyang Zhang static int mana_create_eq(struct mana_context *ac) 1133ca9c54d2SDexuan Cui { 11341e2d0824SHaiyang Zhang struct gdma_dev *gd = ac->gdma_dev; 11351e2d0824SHaiyang Zhang struct gdma_context *gc = gd->gdma_context; 1136ca9c54d2SDexuan Cui struct gdma_queue_spec spec = {}; 1137ca9c54d2SDexuan Cui int err; 1138ca9c54d2SDexuan Cui int i; 1139ca9c54d2SDexuan Cui 11401e2d0824SHaiyang Zhang ac->eqs = kcalloc(gc->max_num_queues, sizeof(struct mana_eq), 1141ca9c54d2SDexuan Cui GFP_KERNEL); 11421e2d0824SHaiyang Zhang if (!ac->eqs) 1143ca9c54d2SDexuan Cui return -ENOMEM; 1144ca9c54d2SDexuan Cui 1145ca9c54d2SDexuan Cui spec.type = GDMA_EQ; 1146ca9c54d2SDexuan Cui spec.monitor_avl_buf = false; 1147ca9c54d2SDexuan Cui spec.queue_size = EQ_SIZE; 1148ca9c54d2SDexuan Cui spec.eq.callback = NULL; 11491e2d0824SHaiyang Zhang spec.eq.context = ac->eqs; 1150ca9c54d2SDexuan Cui spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE; 1151ca9c54d2SDexuan Cui 11521e2d0824SHaiyang Zhang for (i = 0; i < gc->max_num_queues; i++) { 11531e2d0824SHaiyang Zhang err = mana_gd_create_mana_eq(gd, &spec, &ac->eqs[i].eq); 1154ca9c54d2SDexuan Cui if (err) 1155ca9c54d2SDexuan Cui goto out; 1156ca9c54d2SDexuan Cui } 1157ca9c54d2SDexuan Cui 1158ca9c54d2SDexuan Cui return 0; 1159ca9c54d2SDexuan Cui out: 11601e2d0824SHaiyang Zhang mana_destroy_eq(ac); 1161ca9c54d2SDexuan Cui return err; 1162ca9c54d2SDexuan Cui } 1163ca9c54d2SDexuan Cui 11646cc74443SDexuan Cui static int mana_fence_rq(struct mana_port_context *apc, struct mana_rxq *rxq) 11656cc74443SDexuan Cui { 11666cc74443SDexuan Cui struct mana_fence_rq_resp resp = {}; 11676cc74443SDexuan Cui struct mana_fence_rq_req req = {}; 11686cc74443SDexuan Cui int err; 11696cc74443SDexuan Cui 11706cc74443SDexuan Cui init_completion(&rxq->fence_event); 11716cc74443SDexuan Cui 11726cc74443SDexuan Cui mana_gd_init_req_hdr(&req.hdr, MANA_FENCE_RQ, 11736cc74443SDexuan Cui sizeof(req), sizeof(resp)); 11746cc74443SDexuan Cui req.wq_obj_handle = rxq->rxobj; 11756cc74443SDexuan Cui 11766cc74443SDexuan Cui err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 11776cc74443SDexuan Cui sizeof(resp)); 11786cc74443SDexuan Cui if (err) { 11796cc74443SDexuan Cui netdev_err(apc->ndev, "Failed to fence RQ %u: %d\n", 11806cc74443SDexuan Cui rxq->rxq_idx, err); 11816cc74443SDexuan Cui return err; 11826cc74443SDexuan Cui } 11836cc74443SDexuan Cui 11846cc74443SDexuan Cui err = mana_verify_resp_hdr(&resp.hdr, MANA_FENCE_RQ, sizeof(resp)); 11856cc74443SDexuan Cui if (err || resp.hdr.status) { 11866cc74443SDexuan Cui netdev_err(apc->ndev, "Failed to fence RQ %u: %d, 0x%x\n", 11876cc74443SDexuan Cui rxq->rxq_idx, err, resp.hdr.status); 11886cc74443SDexuan Cui if (!err) 11896cc74443SDexuan Cui err = -EPROTO; 11906cc74443SDexuan Cui 11916cc74443SDexuan Cui return err; 11926cc74443SDexuan Cui } 11936cc74443SDexuan Cui 11946cc74443SDexuan Cui if (wait_for_completion_timeout(&rxq->fence_event, 10 * HZ) == 0) { 11956cc74443SDexuan Cui netdev_err(apc->ndev, "Failed to fence RQ %u: timed out\n", 11966cc74443SDexuan Cui rxq->rxq_idx); 11976cc74443SDexuan Cui return -ETIMEDOUT; 11986cc74443SDexuan Cui } 11996cc74443SDexuan Cui 12006cc74443SDexuan Cui return 0; 12016cc74443SDexuan Cui } 12026cc74443SDexuan Cui 12036cc74443SDexuan Cui static void mana_fence_rqs(struct mana_port_context *apc) 12046cc74443SDexuan Cui { 12056cc74443SDexuan Cui unsigned int rxq_idx; 12066cc74443SDexuan Cui struct mana_rxq *rxq; 12076cc74443SDexuan Cui int err; 12086cc74443SDexuan Cui 12096cc74443SDexuan Cui for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) { 12106cc74443SDexuan Cui rxq = apc->rxqs[rxq_idx]; 12116cc74443SDexuan Cui err = mana_fence_rq(apc, rxq); 12126cc74443SDexuan Cui 12136cc74443SDexuan Cui /* In case of any error, use sleep instead. */ 12146cc74443SDexuan Cui if (err) 12156cc74443SDexuan Cui msleep(100); 12166cc74443SDexuan Cui } 12176cc74443SDexuan Cui } 12186cc74443SDexuan Cui 1219ca9c54d2SDexuan Cui static int mana_move_wq_tail(struct gdma_queue *wq, u32 num_units) 1220ca9c54d2SDexuan Cui { 1221ca9c54d2SDexuan Cui u32 used_space_old; 1222ca9c54d2SDexuan Cui u32 used_space_new; 1223ca9c54d2SDexuan Cui 1224ca9c54d2SDexuan Cui used_space_old = wq->head - wq->tail; 1225ca9c54d2SDexuan Cui used_space_new = wq->head - (wq->tail + num_units); 1226ca9c54d2SDexuan Cui 1227ca9c54d2SDexuan Cui if (WARN_ON_ONCE(used_space_new > used_space_old)) 1228ca9c54d2SDexuan Cui return -ERANGE; 1229ca9c54d2SDexuan Cui 1230ca9c54d2SDexuan Cui wq->tail += num_units; 1231ca9c54d2SDexuan Cui return 0; 1232ca9c54d2SDexuan Cui } 1233ca9c54d2SDexuan Cui 1234ca9c54d2SDexuan Cui static void mana_unmap_skb(struct sk_buff *skb, struct mana_port_context *apc) 1235ca9c54d2SDexuan Cui { 1236ca9c54d2SDexuan Cui struct mana_skb_head *ash = (struct mana_skb_head *)skb->head; 1237ca9c54d2SDexuan Cui struct gdma_context *gc = apc->ac->gdma_dev->gdma_context; 1238ca9c54d2SDexuan Cui struct device *dev = gc->dev; 1239ca9c54d2SDexuan Cui int i; 1240ca9c54d2SDexuan Cui 1241ca9c54d2SDexuan Cui dma_unmap_single(dev, ash->dma_handle[0], ash->size[0], DMA_TO_DEVICE); 1242ca9c54d2SDexuan Cui 1243ca9c54d2SDexuan Cui for (i = 1; i < skb_shinfo(skb)->nr_frags + 1; i++) 1244ca9c54d2SDexuan Cui dma_unmap_page(dev, ash->dma_handle[i], ash->size[i], 1245ca9c54d2SDexuan Cui DMA_TO_DEVICE); 1246ca9c54d2SDexuan Cui } 1247ca9c54d2SDexuan Cui 1248ca9c54d2SDexuan Cui static void mana_poll_tx_cq(struct mana_cq *cq) 1249ca9c54d2SDexuan Cui { 1250ca9c54d2SDexuan Cui struct gdma_comp *completions = cq->gdma_comp_buf; 1251ca9c54d2SDexuan Cui struct gdma_posted_wqe_info *wqe_info; 1252ca9c54d2SDexuan Cui unsigned int pkt_transmitted = 0; 1253ca9c54d2SDexuan Cui unsigned int wqe_unit_cnt = 0; 1254ca9c54d2SDexuan Cui struct mana_txq *txq = cq->txq; 1255ca9c54d2SDexuan Cui struct mana_port_context *apc; 1256ca9c54d2SDexuan Cui struct netdev_queue *net_txq; 1257ca9c54d2SDexuan Cui struct gdma_queue *gdma_wq; 1258ca9c54d2SDexuan Cui unsigned int avail_space; 1259ca9c54d2SDexuan Cui struct net_device *ndev; 1260ca9c54d2SDexuan Cui struct sk_buff *skb; 1261ca9c54d2SDexuan Cui bool txq_stopped; 1262ca9c54d2SDexuan Cui int comp_read; 1263ca9c54d2SDexuan Cui int i; 1264ca9c54d2SDexuan Cui 1265ca9c54d2SDexuan Cui ndev = txq->ndev; 1266ca9c54d2SDexuan Cui apc = netdev_priv(ndev); 1267ca9c54d2SDexuan Cui 1268ca9c54d2SDexuan Cui comp_read = mana_gd_poll_cq(cq->gdma_cq, completions, 1269ca9c54d2SDexuan Cui CQE_POLLING_BUFFER); 1270ca9c54d2SDexuan Cui 1271e1b5683fSHaiyang Zhang if (comp_read < 1) 1272e1b5683fSHaiyang Zhang return; 1273e1b5683fSHaiyang Zhang 1274bd7fc6e1SShradha Gupta apc->eth_stats.tx_cqes = comp_read; 1275bd7fc6e1SShradha Gupta 1276ca9c54d2SDexuan Cui for (i = 0; i < comp_read; i++) { 1277ca9c54d2SDexuan Cui struct mana_tx_comp_oob *cqe_oob; 1278ca9c54d2SDexuan Cui 1279ca9c54d2SDexuan Cui if (WARN_ON_ONCE(!completions[i].is_sq)) 1280ca9c54d2SDexuan Cui return; 1281ca9c54d2SDexuan Cui 1282ca9c54d2SDexuan Cui cqe_oob = (struct mana_tx_comp_oob *)completions[i].cqe_data; 1283ca9c54d2SDexuan Cui if (WARN_ON_ONCE(cqe_oob->cqe_hdr.client_type != 1284ca9c54d2SDexuan Cui MANA_CQE_COMPLETION)) 1285ca9c54d2SDexuan Cui return; 1286ca9c54d2SDexuan Cui 1287ca9c54d2SDexuan Cui switch (cqe_oob->cqe_hdr.cqe_type) { 1288ca9c54d2SDexuan Cui case CQE_TX_OKAY: 1289ca9c54d2SDexuan Cui break; 1290ca9c54d2SDexuan Cui 1291ca9c54d2SDexuan Cui case CQE_TX_SA_DROP: 1292ca9c54d2SDexuan Cui case CQE_TX_MTU_DROP: 1293ca9c54d2SDexuan Cui case CQE_TX_INVALID_OOB: 1294ca9c54d2SDexuan Cui case CQE_TX_INVALID_ETH_TYPE: 1295ca9c54d2SDexuan Cui case CQE_TX_HDR_PROCESSING_ERROR: 1296ca9c54d2SDexuan Cui case CQE_TX_VF_DISABLED: 1297ca9c54d2SDexuan Cui case CQE_TX_VPORT_IDX_OUT_OF_RANGE: 1298ca9c54d2SDexuan Cui case CQE_TX_VPORT_DISABLED: 1299ca9c54d2SDexuan Cui case CQE_TX_VLAN_TAGGING_VIOLATION: 1300ca9c54d2SDexuan Cui WARN_ONCE(1, "TX: CQE error %d: ignored.\n", 1301ca9c54d2SDexuan Cui cqe_oob->cqe_hdr.cqe_type); 1302bd7fc6e1SShradha Gupta apc->eth_stats.tx_cqe_err++; 1303ca9c54d2SDexuan Cui break; 1304ca9c54d2SDexuan Cui 1305ca9c54d2SDexuan Cui default: 1306ca9c54d2SDexuan Cui /* If the CQE type is unexpected, log an error, assert, 1307ca9c54d2SDexuan Cui * and go through the error path. 1308ca9c54d2SDexuan Cui */ 1309ca9c54d2SDexuan Cui WARN_ONCE(1, "TX: Unexpected CQE type %d: HW BUG?\n", 1310ca9c54d2SDexuan Cui cqe_oob->cqe_hdr.cqe_type); 1311bd7fc6e1SShradha Gupta apc->eth_stats.tx_cqe_unknown_type++; 1312ca9c54d2SDexuan Cui return; 1313ca9c54d2SDexuan Cui } 1314ca9c54d2SDexuan Cui 1315ca9c54d2SDexuan Cui if (WARN_ON_ONCE(txq->gdma_txq_id != completions[i].wq_num)) 1316ca9c54d2SDexuan Cui return; 1317ca9c54d2SDexuan Cui 1318ca9c54d2SDexuan Cui skb = skb_dequeue(&txq->pending_skbs); 1319ca9c54d2SDexuan Cui if (WARN_ON_ONCE(!skb)) 1320ca9c54d2SDexuan Cui return; 1321ca9c54d2SDexuan Cui 1322ca9c54d2SDexuan Cui wqe_info = (struct gdma_posted_wqe_info *)skb->cb; 1323ca9c54d2SDexuan Cui wqe_unit_cnt += wqe_info->wqe_size_in_bu; 1324ca9c54d2SDexuan Cui 1325ca9c54d2SDexuan Cui mana_unmap_skb(skb, apc); 1326ca9c54d2SDexuan Cui 1327e1b5683fSHaiyang Zhang napi_consume_skb(skb, cq->budget); 1328ca9c54d2SDexuan Cui 1329ca9c54d2SDexuan Cui pkt_transmitted++; 1330ca9c54d2SDexuan Cui } 1331ca9c54d2SDexuan Cui 1332ca9c54d2SDexuan Cui if (WARN_ON_ONCE(wqe_unit_cnt == 0)) 1333ca9c54d2SDexuan Cui return; 1334ca9c54d2SDexuan Cui 1335ca9c54d2SDexuan Cui mana_move_wq_tail(txq->gdma_sq, wqe_unit_cnt); 1336ca9c54d2SDexuan Cui 1337ca9c54d2SDexuan Cui gdma_wq = txq->gdma_sq; 1338ca9c54d2SDexuan Cui avail_space = mana_gd_wq_avail_space(gdma_wq); 1339ca9c54d2SDexuan Cui 1340ca9c54d2SDexuan Cui /* Ensure tail updated before checking q stop */ 1341ca9c54d2SDexuan Cui smp_mb(); 1342ca9c54d2SDexuan Cui 1343ca9c54d2SDexuan Cui net_txq = txq->net_txq; 1344ca9c54d2SDexuan Cui txq_stopped = netif_tx_queue_stopped(net_txq); 1345ca9c54d2SDexuan Cui 1346ca9c54d2SDexuan Cui /* Ensure checking txq_stopped before apc->port_is_up. */ 1347ca9c54d2SDexuan Cui smp_rmb(); 1348ca9c54d2SDexuan Cui 1349ca9c54d2SDexuan Cui if (txq_stopped && apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) { 1350ca9c54d2SDexuan Cui netif_tx_wake_queue(net_txq); 1351ca9c54d2SDexuan Cui apc->eth_stats.wake_queue++; 1352ca9c54d2SDexuan Cui } 1353ca9c54d2SDexuan Cui 1354ca9c54d2SDexuan Cui if (atomic_sub_return(pkt_transmitted, &txq->pending_sends) < 0) 1355ca9c54d2SDexuan Cui WARN_ON_ONCE(1); 1356e1b5683fSHaiyang Zhang 1357e1b5683fSHaiyang Zhang cq->work_done = pkt_transmitted; 1358bd7fc6e1SShradha Gupta 1359bd7fc6e1SShradha Gupta apc->eth_stats.tx_cqes -= pkt_transmitted; 1360ca9c54d2SDexuan Cui } 1361ca9c54d2SDexuan Cui 1362ca9c54d2SDexuan Cui static void mana_post_pkt_rxq(struct mana_rxq *rxq) 1363ca9c54d2SDexuan Cui { 1364ca9c54d2SDexuan Cui struct mana_recv_buf_oob *recv_buf_oob; 1365ca9c54d2SDexuan Cui u32 curr_index; 1366ca9c54d2SDexuan Cui int err; 1367ca9c54d2SDexuan Cui 1368ca9c54d2SDexuan Cui curr_index = rxq->buf_index++; 1369ca9c54d2SDexuan Cui if (rxq->buf_index == rxq->num_rx_buf) 1370ca9c54d2SDexuan Cui rxq->buf_index = 0; 1371ca9c54d2SDexuan Cui 1372ca9c54d2SDexuan Cui recv_buf_oob = &rxq->rx_oobs[curr_index]; 1373ca9c54d2SDexuan Cui 1374ca9c54d2SDexuan Cui err = mana_gd_post_and_ring(rxq->gdma_rq, &recv_buf_oob->wqe_req, 1375ca9c54d2SDexuan Cui &recv_buf_oob->wqe_inf); 1376ca9c54d2SDexuan Cui if (WARN_ON_ONCE(err)) 1377ca9c54d2SDexuan Cui return; 1378ca9c54d2SDexuan Cui 1379ca9c54d2SDexuan Cui WARN_ON_ONCE(recv_buf_oob->wqe_inf.wqe_size_in_bu != 1); 1380ca9c54d2SDexuan Cui } 1381ca9c54d2SDexuan Cui 13822fbbd712SHaiyang Zhang static struct sk_buff *mana_build_skb(struct mana_rxq *rxq, void *buf_va, 13832fbbd712SHaiyang Zhang uint pkt_len, struct xdp_buff *xdp) 1384ed5356b5SHaiyang Zhang { 13852fbbd712SHaiyang Zhang struct sk_buff *skb = napi_build_skb(buf_va, rxq->alloc_size); 1386ed5356b5SHaiyang Zhang 1387ed5356b5SHaiyang Zhang if (!skb) 1388ed5356b5SHaiyang Zhang return NULL; 1389ed5356b5SHaiyang Zhang 1390ed5356b5SHaiyang Zhang if (xdp->data_hard_start) { 1391ed5356b5SHaiyang Zhang skb_reserve(skb, xdp->data - xdp->data_hard_start); 1392ed5356b5SHaiyang Zhang skb_put(skb, xdp->data_end - xdp->data); 13932fbbd712SHaiyang Zhang return skb; 1394ed5356b5SHaiyang Zhang } 1395ed5356b5SHaiyang Zhang 13962fbbd712SHaiyang Zhang skb_reserve(skb, rxq->headroom); 13972fbbd712SHaiyang Zhang skb_put(skb, pkt_len); 13982fbbd712SHaiyang Zhang 1399ed5356b5SHaiyang Zhang return skb; 1400ed5356b5SHaiyang Zhang } 1401ed5356b5SHaiyang Zhang 1402ca9c54d2SDexuan Cui static void mana_rx_skb(void *buf_va, struct mana_rxcomp_oob *cqe, 1403ca9c54d2SDexuan Cui struct mana_rxq *rxq) 1404ca9c54d2SDexuan Cui { 1405f90f8420SHaiyang Zhang struct mana_stats_rx *rx_stats = &rxq->stats; 1406ca9c54d2SDexuan Cui struct net_device *ndev = rxq->ndev; 1407ca9c54d2SDexuan Cui uint pkt_len = cqe->ppi[0].pkt_len; 1408ca9c54d2SDexuan Cui u16 rxq_idx = rxq->rxq_idx; 1409ca9c54d2SDexuan Cui struct napi_struct *napi; 1410ed5356b5SHaiyang Zhang struct xdp_buff xdp = {}; 1411ca9c54d2SDexuan Cui struct sk_buff *skb; 1412ca9c54d2SDexuan Cui u32 hash_value; 1413ed5356b5SHaiyang Zhang u32 act; 1414ca9c54d2SDexuan Cui 1415e1b5683fSHaiyang Zhang rxq->rx_cq.work_done++; 1416e1b5683fSHaiyang Zhang napi = &rxq->rx_cq.napi; 1417ca9c54d2SDexuan Cui 1418ca9c54d2SDexuan Cui if (!buf_va) { 1419ca9c54d2SDexuan Cui ++ndev->stats.rx_dropped; 1420ca9c54d2SDexuan Cui return; 1421ca9c54d2SDexuan Cui } 1422ca9c54d2SDexuan Cui 1423ed5356b5SHaiyang Zhang act = mana_run_xdp(ndev, rxq, &xdp, buf_va, pkt_len); 1424ca9c54d2SDexuan Cui 14257a8938cdSHaiyang Zhang if (act == XDP_REDIRECT && !rxq->xdp_rc) 14267a8938cdSHaiyang Zhang return; 14277a8938cdSHaiyang Zhang 1428ed5356b5SHaiyang Zhang if (act != XDP_PASS && act != XDP_TX) 1429f90f8420SHaiyang Zhang goto drop_xdp; 1430ca9c54d2SDexuan Cui 14312fbbd712SHaiyang Zhang skb = mana_build_skb(rxq, buf_va, pkt_len, &xdp); 1432ed5356b5SHaiyang Zhang 1433ed5356b5SHaiyang Zhang if (!skb) 1434ed5356b5SHaiyang Zhang goto drop; 1435ed5356b5SHaiyang Zhang 1436ca9c54d2SDexuan Cui skb->dev = napi->dev; 1437ca9c54d2SDexuan Cui 1438ca9c54d2SDexuan Cui skb->protocol = eth_type_trans(skb, ndev); 1439ca9c54d2SDexuan Cui skb_checksum_none_assert(skb); 1440ca9c54d2SDexuan Cui skb_record_rx_queue(skb, rxq_idx); 1441ca9c54d2SDexuan Cui 1442ca9c54d2SDexuan Cui if ((ndev->features & NETIF_F_RXCSUM) && cqe->rx_iphdr_csum_succeed) { 1443ca9c54d2SDexuan Cui if (cqe->rx_tcp_csum_succeed || cqe->rx_udp_csum_succeed) 1444ca9c54d2SDexuan Cui skb->ip_summed = CHECKSUM_UNNECESSARY; 1445ca9c54d2SDexuan Cui } 1446ca9c54d2SDexuan Cui 1447ca9c54d2SDexuan Cui if (cqe->rx_hashtype != 0 && (ndev->features & NETIF_F_RXHASH)) { 1448ca9c54d2SDexuan Cui hash_value = cqe->ppi[0].pkt_hash; 1449ca9c54d2SDexuan Cui 1450ca9c54d2SDexuan Cui if (cqe->rx_hashtype & MANA_HASH_L4) 1451ca9c54d2SDexuan Cui skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L4); 1452ca9c54d2SDexuan Cui else 1453ca9c54d2SDexuan Cui skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L3); 1454ca9c54d2SDexuan Cui } 1455ca9c54d2SDexuan Cui 1456d356abb9SHaiyang Zhang u64_stats_update_begin(&rx_stats->syncp); 1457d356abb9SHaiyang Zhang rx_stats->packets++; 1458d356abb9SHaiyang Zhang rx_stats->bytes += pkt_len; 1459d356abb9SHaiyang Zhang 1460d356abb9SHaiyang Zhang if (act == XDP_TX) 1461d356abb9SHaiyang Zhang rx_stats->xdp_tx++; 1462d356abb9SHaiyang Zhang u64_stats_update_end(&rx_stats->syncp); 1463d356abb9SHaiyang Zhang 1464ed5356b5SHaiyang Zhang if (act == XDP_TX) { 1465ed5356b5SHaiyang Zhang skb_set_queue_mapping(skb, rxq_idx); 1466ed5356b5SHaiyang Zhang mana_xdp_tx(skb, ndev); 1467ed5356b5SHaiyang Zhang return; 1468ed5356b5SHaiyang Zhang } 1469ed5356b5SHaiyang Zhang 1470ca9c54d2SDexuan Cui napi_gro_receive(napi, skb); 1471ca9c54d2SDexuan Cui 1472ed5356b5SHaiyang Zhang return; 1473ed5356b5SHaiyang Zhang 1474f90f8420SHaiyang Zhang drop_xdp: 1475f90f8420SHaiyang Zhang u64_stats_update_begin(&rx_stats->syncp); 1476f90f8420SHaiyang Zhang rx_stats->xdp_drop++; 1477f90f8420SHaiyang Zhang u64_stats_update_end(&rx_stats->syncp); 1478f90f8420SHaiyang Zhang 1479ed5356b5SHaiyang Zhang drop: 1480a2917b23SHaiyang Zhang WARN_ON_ONCE(rxq->xdp_save_va); 1481a2917b23SHaiyang Zhang /* Save for reuse */ 1482a2917b23SHaiyang Zhang rxq->xdp_save_va = buf_va; 1483a6bf5703SHaiyang Zhang 1484ed5356b5SHaiyang Zhang ++ndev->stats.rx_dropped; 1485f90f8420SHaiyang Zhang 1486ed5356b5SHaiyang Zhang return; 1487ca9c54d2SDexuan Cui } 1488ca9c54d2SDexuan Cui 1489a2917b23SHaiyang Zhang static void *mana_get_rxfrag(struct mana_rxq *rxq, struct device *dev, 1490a2917b23SHaiyang Zhang dma_addr_t *da, bool is_napi) 1491a2917b23SHaiyang Zhang { 1492a2917b23SHaiyang Zhang struct page *page; 1493a2917b23SHaiyang Zhang void *va; 1494a2917b23SHaiyang Zhang 1495a2917b23SHaiyang Zhang /* Reuse XDP dropped page if available */ 1496a2917b23SHaiyang Zhang if (rxq->xdp_save_va) { 1497a2917b23SHaiyang Zhang va = rxq->xdp_save_va; 1498a2917b23SHaiyang Zhang rxq->xdp_save_va = NULL; 14992fbbd712SHaiyang Zhang } else if (rxq->alloc_size > PAGE_SIZE) { 15002fbbd712SHaiyang Zhang if (is_napi) 15012fbbd712SHaiyang Zhang va = napi_alloc_frag(rxq->alloc_size); 15022fbbd712SHaiyang Zhang else 15032fbbd712SHaiyang Zhang va = netdev_alloc_frag(rxq->alloc_size); 15042fbbd712SHaiyang Zhang 15052fbbd712SHaiyang Zhang if (!va) 15062fbbd712SHaiyang Zhang return NULL; 1507a2917b23SHaiyang Zhang } else { 1508a2917b23SHaiyang Zhang page = dev_alloc_page(); 1509a2917b23SHaiyang Zhang if (!page) 1510a2917b23SHaiyang Zhang return NULL; 1511a2917b23SHaiyang Zhang 1512a2917b23SHaiyang Zhang va = page_to_virt(page); 1513a2917b23SHaiyang Zhang } 1514a2917b23SHaiyang Zhang 15152fbbd712SHaiyang Zhang *da = dma_map_single(dev, va + rxq->headroom, rxq->datasize, 1516a2917b23SHaiyang Zhang DMA_FROM_DEVICE); 1517a2917b23SHaiyang Zhang if (dma_mapping_error(dev, *da)) { 1518a2917b23SHaiyang Zhang put_page(virt_to_head_page(va)); 1519a2917b23SHaiyang Zhang return NULL; 1520a2917b23SHaiyang Zhang } 1521a2917b23SHaiyang Zhang 1522a2917b23SHaiyang Zhang return va; 1523a2917b23SHaiyang Zhang } 1524a2917b23SHaiyang Zhang 1525a2917b23SHaiyang Zhang /* Allocate frag for rx buffer, and save the old buf */ 1526*5c74064fSHaiyang Zhang static void mana_refill_rx_oob(struct device *dev, struct mana_rxq *rxq, 1527a2917b23SHaiyang Zhang struct mana_recv_buf_oob *rxoob, void **old_buf) 1528a2917b23SHaiyang Zhang { 1529a2917b23SHaiyang Zhang dma_addr_t da; 1530a2917b23SHaiyang Zhang void *va; 1531a2917b23SHaiyang Zhang 1532a2917b23SHaiyang Zhang va = mana_get_rxfrag(rxq, dev, &da, true); 1533a2917b23SHaiyang Zhang if (!va) 1534a2917b23SHaiyang Zhang return; 1535a2917b23SHaiyang Zhang 1536a2917b23SHaiyang Zhang dma_unmap_single(dev, rxoob->sgl[0].address, rxq->datasize, 1537a2917b23SHaiyang Zhang DMA_FROM_DEVICE); 1538a2917b23SHaiyang Zhang *old_buf = rxoob->buf_va; 1539a2917b23SHaiyang Zhang 1540a2917b23SHaiyang Zhang rxoob->buf_va = va; 1541a2917b23SHaiyang Zhang rxoob->sgl[0].address = da; 1542a2917b23SHaiyang Zhang } 1543a2917b23SHaiyang Zhang 1544ca9c54d2SDexuan Cui static void mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq, 1545ca9c54d2SDexuan Cui struct gdma_comp *cqe) 1546ca9c54d2SDexuan Cui { 1547ca9c54d2SDexuan Cui struct mana_rxcomp_oob *oob = (struct mana_rxcomp_oob *)cqe->cqe_data; 1548ca9c54d2SDexuan Cui struct gdma_context *gc = rxq->gdma_rq->gdma_dev->gdma_context; 1549ca9c54d2SDexuan Cui struct net_device *ndev = rxq->ndev; 1550ca9c54d2SDexuan Cui struct mana_recv_buf_oob *rxbuf_oob; 1551bd7fc6e1SShradha Gupta struct mana_port_context *apc; 1552ca9c54d2SDexuan Cui struct device *dev = gc->dev; 1553a2917b23SHaiyang Zhang void *old_buf = NULL; 1554ca9c54d2SDexuan Cui u32 curr, pktlen; 1555ca9c54d2SDexuan Cui 1556bd7fc6e1SShradha Gupta apc = netdev_priv(ndev); 1557bd7fc6e1SShradha Gupta 1558ca9c54d2SDexuan Cui switch (oob->cqe_hdr.cqe_type) { 1559ca9c54d2SDexuan Cui case CQE_RX_OKAY: 1560ca9c54d2SDexuan Cui break; 1561ca9c54d2SDexuan Cui 1562ca9c54d2SDexuan Cui case CQE_RX_TRUNCATED: 1563e4b76219SHaiyang Zhang ++ndev->stats.rx_dropped; 1564e4b76219SHaiyang Zhang rxbuf_oob = &rxq->rx_oobs[rxq->buf_index]; 1565e4b76219SHaiyang Zhang netdev_warn_once(ndev, "Dropped a truncated packet\n"); 1566e4b76219SHaiyang Zhang goto drop; 1567ca9c54d2SDexuan Cui 1568ca9c54d2SDexuan Cui case CQE_RX_COALESCED_4: 1569ca9c54d2SDexuan Cui netdev_err(ndev, "RX coalescing is unsupported\n"); 1570bd7fc6e1SShradha Gupta apc->eth_stats.rx_coalesced_err++; 1571ca9c54d2SDexuan Cui return; 1572ca9c54d2SDexuan Cui 1573ca9c54d2SDexuan Cui case CQE_RX_OBJECT_FENCE: 15746cc74443SDexuan Cui complete(&rxq->fence_event); 1575ca9c54d2SDexuan Cui return; 1576ca9c54d2SDexuan Cui 1577ca9c54d2SDexuan Cui default: 1578ca9c54d2SDexuan Cui netdev_err(ndev, "Unknown RX CQE type = %d\n", 1579ca9c54d2SDexuan Cui oob->cqe_hdr.cqe_type); 1580bd7fc6e1SShradha Gupta apc->eth_stats.rx_cqe_unknown_type++; 1581ca9c54d2SDexuan Cui return; 1582ca9c54d2SDexuan Cui } 1583ca9c54d2SDexuan Cui 1584ca9c54d2SDexuan Cui pktlen = oob->ppi[0].pkt_len; 1585ca9c54d2SDexuan Cui 1586ca9c54d2SDexuan Cui if (pktlen == 0) { 1587ca9c54d2SDexuan Cui /* data packets should never have packetlength of zero */ 1588ca9c54d2SDexuan Cui netdev_err(ndev, "RX pkt len=0, rq=%u, cq=%u, rxobj=0x%llx\n", 1589ca9c54d2SDexuan Cui rxq->gdma_id, cq->gdma_id, rxq->rxobj); 1590ca9c54d2SDexuan Cui return; 1591ca9c54d2SDexuan Cui } 1592ca9c54d2SDexuan Cui 1593ca9c54d2SDexuan Cui curr = rxq->buf_index; 1594ca9c54d2SDexuan Cui rxbuf_oob = &rxq->rx_oobs[curr]; 1595ca9c54d2SDexuan Cui WARN_ON_ONCE(rxbuf_oob->wqe_inf.wqe_size_in_bu != 1); 1596ca9c54d2SDexuan Cui 1597*5c74064fSHaiyang Zhang mana_refill_rx_oob(dev, rxq, rxbuf_oob, &old_buf); 1598ca9c54d2SDexuan Cui 1599a2917b23SHaiyang Zhang /* Unsuccessful refill will have old_buf == NULL. 1600a2917b23SHaiyang Zhang * In this case, mana_rx_skb() will drop the packet. 1601a2917b23SHaiyang Zhang */ 1602ca9c54d2SDexuan Cui mana_rx_skb(old_buf, oob, rxq); 1603ca9c54d2SDexuan Cui 1604e4b76219SHaiyang Zhang drop: 1605ca9c54d2SDexuan Cui mana_move_wq_tail(rxq->gdma_rq, rxbuf_oob->wqe_inf.wqe_size_in_bu); 1606ca9c54d2SDexuan Cui 1607ca9c54d2SDexuan Cui mana_post_pkt_rxq(rxq); 1608ca9c54d2SDexuan Cui } 1609ca9c54d2SDexuan Cui 1610ca9c54d2SDexuan Cui static void mana_poll_rx_cq(struct mana_cq *cq) 1611ca9c54d2SDexuan Cui { 1612ca9c54d2SDexuan Cui struct gdma_comp *comp = cq->gdma_comp_buf; 16137a8938cdSHaiyang Zhang struct mana_rxq *rxq = cq->rxq; 1614bd7fc6e1SShradha Gupta struct mana_port_context *apc; 1615d90a9468SDexuan Cui int comp_read, i; 1616ca9c54d2SDexuan Cui 1617bd7fc6e1SShradha Gupta apc = netdev_priv(rxq->ndev); 1618bd7fc6e1SShradha Gupta 1619ca9c54d2SDexuan Cui comp_read = mana_gd_poll_cq(cq->gdma_cq, comp, CQE_POLLING_BUFFER); 1620ca9c54d2SDexuan Cui WARN_ON_ONCE(comp_read > CQE_POLLING_BUFFER); 1621ca9c54d2SDexuan Cui 1622bd7fc6e1SShradha Gupta apc->eth_stats.rx_cqes = comp_read; 16237a8938cdSHaiyang Zhang rxq->xdp_flush = false; 16247a8938cdSHaiyang Zhang 1625ca9c54d2SDexuan Cui for (i = 0; i < comp_read; i++) { 1626ca9c54d2SDexuan Cui if (WARN_ON_ONCE(comp[i].is_sq)) 1627ca9c54d2SDexuan Cui return; 1628ca9c54d2SDexuan Cui 1629ca9c54d2SDexuan Cui /* verify recv cqe references the right rxq */ 1630ca9c54d2SDexuan Cui if (WARN_ON_ONCE(comp[i].wq_num != cq->rxq->gdma_id)) 1631ca9c54d2SDexuan Cui return; 1632ca9c54d2SDexuan Cui 16337a8938cdSHaiyang Zhang mana_process_rx_cqe(rxq, cq, &comp[i]); 1634bd7fc6e1SShradha Gupta 1635bd7fc6e1SShradha Gupta apc->eth_stats.rx_cqes--; 1636ca9c54d2SDexuan Cui } 16377a8938cdSHaiyang Zhang 16387a8938cdSHaiyang Zhang if (rxq->xdp_flush) 16397a8938cdSHaiyang Zhang xdp_do_flush(); 1640ca9c54d2SDexuan Cui } 1641ca9c54d2SDexuan Cui 164218010ff7SHaiyang Zhang static int mana_cq_handler(void *context, struct gdma_queue *gdma_queue) 1643ca9c54d2SDexuan Cui { 1644ca9c54d2SDexuan Cui struct mana_cq *cq = context; 1645e1b5683fSHaiyang Zhang u8 arm_bit; 164618010ff7SHaiyang Zhang int w; 1647ca9c54d2SDexuan Cui 1648ca9c54d2SDexuan Cui WARN_ON_ONCE(cq->gdma_cq != gdma_queue); 1649ca9c54d2SDexuan Cui 1650ca9c54d2SDexuan Cui if (cq->type == MANA_CQ_TYPE_RX) 1651ca9c54d2SDexuan Cui mana_poll_rx_cq(cq); 1652ca9c54d2SDexuan Cui else 1653ca9c54d2SDexuan Cui mana_poll_tx_cq(cq); 1654ca9c54d2SDexuan Cui 165518010ff7SHaiyang Zhang w = cq->work_done; 165618010ff7SHaiyang Zhang 165718010ff7SHaiyang Zhang if (w < cq->budget && 165818010ff7SHaiyang Zhang napi_complete_done(&cq->napi, w)) { 1659e1b5683fSHaiyang Zhang arm_bit = SET_ARM_BIT; 1660e1b5683fSHaiyang Zhang } else { 1661e1b5683fSHaiyang Zhang arm_bit = 0; 1662e1b5683fSHaiyang Zhang } 1663e1b5683fSHaiyang Zhang 1664e1b5683fSHaiyang Zhang mana_gd_ring_cq(gdma_queue, arm_bit); 166518010ff7SHaiyang Zhang 166618010ff7SHaiyang Zhang return w; 1667e1b5683fSHaiyang Zhang } 1668e1b5683fSHaiyang Zhang 1669e1b5683fSHaiyang Zhang static int mana_poll(struct napi_struct *napi, int budget) 1670e1b5683fSHaiyang Zhang { 1671e1b5683fSHaiyang Zhang struct mana_cq *cq = container_of(napi, struct mana_cq, napi); 167218010ff7SHaiyang Zhang int w; 1673e1b5683fSHaiyang Zhang 1674e1b5683fSHaiyang Zhang cq->work_done = 0; 1675e1b5683fSHaiyang Zhang cq->budget = budget; 1676e1b5683fSHaiyang Zhang 167718010ff7SHaiyang Zhang w = mana_cq_handler(cq, cq->gdma_cq); 1678e1b5683fSHaiyang Zhang 167918010ff7SHaiyang Zhang return min(w, budget); 1680e1b5683fSHaiyang Zhang } 1681e1b5683fSHaiyang Zhang 1682e1b5683fSHaiyang Zhang static void mana_schedule_napi(void *context, struct gdma_queue *gdma_queue) 1683e1b5683fSHaiyang Zhang { 1684e1b5683fSHaiyang Zhang struct mana_cq *cq = context; 1685e1b5683fSHaiyang Zhang 1686e1b5683fSHaiyang Zhang napi_schedule_irqoff(&cq->napi); 1687ca9c54d2SDexuan Cui } 1688ca9c54d2SDexuan Cui 1689ca9c54d2SDexuan Cui static void mana_deinit_cq(struct mana_port_context *apc, struct mana_cq *cq) 1690ca9c54d2SDexuan Cui { 1691ca9c54d2SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 1692ca9c54d2SDexuan Cui 1693ca9c54d2SDexuan Cui if (!cq->gdma_cq) 1694ca9c54d2SDexuan Cui return; 1695ca9c54d2SDexuan Cui 1696ca9c54d2SDexuan Cui mana_gd_destroy_queue(gd->gdma_context, cq->gdma_cq); 1697ca9c54d2SDexuan Cui } 1698ca9c54d2SDexuan Cui 1699ca9c54d2SDexuan Cui static void mana_deinit_txq(struct mana_port_context *apc, struct mana_txq *txq) 1700ca9c54d2SDexuan Cui { 1701ca9c54d2SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 1702ca9c54d2SDexuan Cui 1703ca9c54d2SDexuan Cui if (!txq->gdma_sq) 1704ca9c54d2SDexuan Cui return; 1705ca9c54d2SDexuan Cui 1706ca9c54d2SDexuan Cui mana_gd_destroy_queue(gd->gdma_context, txq->gdma_sq); 1707ca9c54d2SDexuan Cui } 1708ca9c54d2SDexuan Cui 1709ca9c54d2SDexuan Cui static void mana_destroy_txq(struct mana_port_context *apc) 1710ca9c54d2SDexuan Cui { 1711e1b5683fSHaiyang Zhang struct napi_struct *napi; 1712ca9c54d2SDexuan Cui int i; 1713ca9c54d2SDexuan Cui 1714ca9c54d2SDexuan Cui if (!apc->tx_qp) 1715ca9c54d2SDexuan Cui return; 1716ca9c54d2SDexuan Cui 1717ca9c54d2SDexuan Cui for (i = 0; i < apc->num_queues; i++) { 1718e1b5683fSHaiyang Zhang napi = &apc->tx_qp[i].tx_cq.napi; 1719e1b5683fSHaiyang Zhang napi_synchronize(napi); 1720e1b5683fSHaiyang Zhang napi_disable(napi); 1721e1b5683fSHaiyang Zhang netif_napi_del(napi); 1722e1b5683fSHaiyang Zhang 1723ca9c54d2SDexuan Cui mana_destroy_wq_obj(apc, GDMA_SQ, apc->tx_qp[i].tx_object); 1724ca9c54d2SDexuan Cui 1725ca9c54d2SDexuan Cui mana_deinit_cq(apc, &apc->tx_qp[i].tx_cq); 1726ca9c54d2SDexuan Cui 1727ca9c54d2SDexuan Cui mana_deinit_txq(apc, &apc->tx_qp[i].txq); 1728ca9c54d2SDexuan Cui } 1729ca9c54d2SDexuan Cui 1730ca9c54d2SDexuan Cui kfree(apc->tx_qp); 1731ca9c54d2SDexuan Cui apc->tx_qp = NULL; 1732ca9c54d2SDexuan Cui } 1733ca9c54d2SDexuan Cui 1734ca9c54d2SDexuan Cui static int mana_create_txq(struct mana_port_context *apc, 1735ca9c54d2SDexuan Cui struct net_device *net) 1736ca9c54d2SDexuan Cui { 17371e2d0824SHaiyang Zhang struct mana_context *ac = apc->ac; 17381e2d0824SHaiyang Zhang struct gdma_dev *gd = ac->gdma_dev; 1739ca9c54d2SDexuan Cui struct mana_obj_spec wq_spec; 1740ca9c54d2SDexuan Cui struct mana_obj_spec cq_spec; 1741ca9c54d2SDexuan Cui struct gdma_queue_spec spec; 1742ca9c54d2SDexuan Cui struct gdma_context *gc; 1743ca9c54d2SDexuan Cui struct mana_txq *txq; 1744ca9c54d2SDexuan Cui struct mana_cq *cq; 1745ca9c54d2SDexuan Cui u32 txq_size; 1746ca9c54d2SDexuan Cui u32 cq_size; 1747ca9c54d2SDexuan Cui int err; 1748ca9c54d2SDexuan Cui int i; 1749ca9c54d2SDexuan Cui 1750ca9c54d2SDexuan Cui apc->tx_qp = kcalloc(apc->num_queues, sizeof(struct mana_tx_qp), 1751ca9c54d2SDexuan Cui GFP_KERNEL); 1752ca9c54d2SDexuan Cui if (!apc->tx_qp) 1753ca9c54d2SDexuan Cui return -ENOMEM; 1754ca9c54d2SDexuan Cui 1755ca9c54d2SDexuan Cui /* The minimum size of the WQE is 32 bytes, hence 1756ca9c54d2SDexuan Cui * MAX_SEND_BUFFERS_PER_QUEUE represents the maximum number of WQEs 1757ca9c54d2SDexuan Cui * the SQ can store. This value is then used to size other queues 1758ca9c54d2SDexuan Cui * to prevent overflow. 1759ca9c54d2SDexuan Cui */ 1760ca9c54d2SDexuan Cui txq_size = MAX_SEND_BUFFERS_PER_QUEUE * 32; 1761ca9c54d2SDexuan Cui BUILD_BUG_ON(!PAGE_ALIGNED(txq_size)); 1762ca9c54d2SDexuan Cui 1763ca9c54d2SDexuan Cui cq_size = MAX_SEND_BUFFERS_PER_QUEUE * COMP_ENTRY_SIZE; 1764ca9c54d2SDexuan Cui cq_size = PAGE_ALIGN(cq_size); 1765ca9c54d2SDexuan Cui 1766ca9c54d2SDexuan Cui gc = gd->gdma_context; 1767ca9c54d2SDexuan Cui 1768ca9c54d2SDexuan Cui for (i = 0; i < apc->num_queues; i++) { 1769ca9c54d2SDexuan Cui apc->tx_qp[i].tx_object = INVALID_MANA_HANDLE; 1770ca9c54d2SDexuan Cui 1771ca9c54d2SDexuan Cui /* Create SQ */ 1772ca9c54d2SDexuan Cui txq = &apc->tx_qp[i].txq; 1773ca9c54d2SDexuan Cui 1774ca9c54d2SDexuan Cui u64_stats_init(&txq->stats.syncp); 1775ca9c54d2SDexuan Cui txq->ndev = net; 1776ca9c54d2SDexuan Cui txq->net_txq = netdev_get_tx_queue(net, i); 1777ca9c54d2SDexuan Cui txq->vp_offset = apc->tx_vp_offset; 1778ca9c54d2SDexuan Cui skb_queue_head_init(&txq->pending_skbs); 1779ca9c54d2SDexuan Cui 1780ca9c54d2SDexuan Cui memset(&spec, 0, sizeof(spec)); 1781ca9c54d2SDexuan Cui spec.type = GDMA_SQ; 1782ca9c54d2SDexuan Cui spec.monitor_avl_buf = true; 1783ca9c54d2SDexuan Cui spec.queue_size = txq_size; 1784ca9c54d2SDexuan Cui err = mana_gd_create_mana_wq_cq(gd, &spec, &txq->gdma_sq); 1785ca9c54d2SDexuan Cui if (err) 1786ca9c54d2SDexuan Cui goto out; 1787ca9c54d2SDexuan Cui 1788ca9c54d2SDexuan Cui /* Create SQ's CQ */ 1789ca9c54d2SDexuan Cui cq = &apc->tx_qp[i].tx_cq; 1790ca9c54d2SDexuan Cui cq->type = MANA_CQ_TYPE_TX; 1791ca9c54d2SDexuan Cui 1792ca9c54d2SDexuan Cui cq->txq = txq; 1793ca9c54d2SDexuan Cui 1794ca9c54d2SDexuan Cui memset(&spec, 0, sizeof(spec)); 1795ca9c54d2SDexuan Cui spec.type = GDMA_CQ; 1796ca9c54d2SDexuan Cui spec.monitor_avl_buf = false; 1797ca9c54d2SDexuan Cui spec.queue_size = cq_size; 1798e1b5683fSHaiyang Zhang spec.cq.callback = mana_schedule_napi; 17991e2d0824SHaiyang Zhang spec.cq.parent_eq = ac->eqs[i].eq; 1800ca9c54d2SDexuan Cui spec.cq.context = cq; 1801ca9c54d2SDexuan Cui err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq); 1802ca9c54d2SDexuan Cui if (err) 1803ca9c54d2SDexuan Cui goto out; 1804ca9c54d2SDexuan Cui 1805ca9c54d2SDexuan Cui memset(&wq_spec, 0, sizeof(wq_spec)); 1806ca9c54d2SDexuan Cui memset(&cq_spec, 0, sizeof(cq_spec)); 1807ca9c54d2SDexuan Cui 180828c66cfaSAjay Sharma wq_spec.gdma_region = txq->gdma_sq->mem_info.dma_region_handle; 1809ca9c54d2SDexuan Cui wq_spec.queue_size = txq->gdma_sq->queue_size; 1810ca9c54d2SDexuan Cui 181128c66cfaSAjay Sharma cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; 1812ca9c54d2SDexuan Cui cq_spec.queue_size = cq->gdma_cq->queue_size; 1813ca9c54d2SDexuan Cui cq_spec.modr_ctx_id = 0; 1814ca9c54d2SDexuan Cui cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; 1815ca9c54d2SDexuan Cui 1816ca9c54d2SDexuan Cui err = mana_create_wq_obj(apc, apc->port_handle, GDMA_SQ, 1817ca9c54d2SDexuan Cui &wq_spec, &cq_spec, 1818ca9c54d2SDexuan Cui &apc->tx_qp[i].tx_object); 1819ca9c54d2SDexuan Cui 1820ca9c54d2SDexuan Cui if (err) 1821ca9c54d2SDexuan Cui goto out; 1822ca9c54d2SDexuan Cui 1823ca9c54d2SDexuan Cui txq->gdma_sq->id = wq_spec.queue_index; 1824ca9c54d2SDexuan Cui cq->gdma_cq->id = cq_spec.queue_index; 1825ca9c54d2SDexuan Cui 182628c66cfaSAjay Sharma txq->gdma_sq->mem_info.dma_region_handle = 182728c66cfaSAjay Sharma GDMA_INVALID_DMA_REGION; 182828c66cfaSAjay Sharma cq->gdma_cq->mem_info.dma_region_handle = 182928c66cfaSAjay Sharma GDMA_INVALID_DMA_REGION; 1830ca9c54d2SDexuan Cui 1831ca9c54d2SDexuan Cui txq->gdma_txq_id = txq->gdma_sq->id; 1832ca9c54d2SDexuan Cui 1833ca9c54d2SDexuan Cui cq->gdma_id = cq->gdma_cq->id; 1834ca9c54d2SDexuan Cui 1835b9078845SChristophe JAILLET if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) { 1836b9078845SChristophe JAILLET err = -EINVAL; 1837b9078845SChristophe JAILLET goto out; 1838b9078845SChristophe JAILLET } 1839ca9c54d2SDexuan Cui 1840ca9c54d2SDexuan Cui gc->cq_table[cq->gdma_id] = cq->gdma_cq; 1841ca9c54d2SDexuan Cui 184216d083e2SJakub Kicinski netif_napi_add_tx(net, &cq->napi, mana_poll); 1843e1b5683fSHaiyang Zhang napi_enable(&cq->napi); 1844e1b5683fSHaiyang Zhang 1845e1b5683fSHaiyang Zhang mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT); 1846ca9c54d2SDexuan Cui } 1847ca9c54d2SDexuan Cui 1848ca9c54d2SDexuan Cui return 0; 1849ca9c54d2SDexuan Cui out: 1850ca9c54d2SDexuan Cui mana_destroy_txq(apc); 1851ca9c54d2SDexuan Cui return err; 1852ca9c54d2SDexuan Cui } 1853ca9c54d2SDexuan Cui 1854ca9c54d2SDexuan Cui static void mana_destroy_rxq(struct mana_port_context *apc, 1855ca9c54d2SDexuan Cui struct mana_rxq *rxq, bool validate_state) 1856ca9c54d2SDexuan Cui 1857ca9c54d2SDexuan Cui { 1858ca9c54d2SDexuan Cui struct gdma_context *gc = apc->ac->gdma_dev->gdma_context; 1859ca9c54d2SDexuan Cui struct mana_recv_buf_oob *rx_oob; 1860ca9c54d2SDexuan Cui struct device *dev = gc->dev; 1861e1b5683fSHaiyang Zhang struct napi_struct *napi; 1862ca9c54d2SDexuan Cui int i; 1863ca9c54d2SDexuan Cui 1864ca9c54d2SDexuan Cui if (!rxq) 1865ca9c54d2SDexuan Cui return; 1866ca9c54d2SDexuan Cui 1867e1b5683fSHaiyang Zhang napi = &rxq->rx_cq.napi; 1868e1b5683fSHaiyang Zhang 1869ca9c54d2SDexuan Cui if (validate_state) 1870e1b5683fSHaiyang Zhang napi_synchronize(napi); 1871e1b5683fSHaiyang Zhang 1872e1b5683fSHaiyang Zhang napi_disable(napi); 1873ed5356b5SHaiyang Zhang 1874ed5356b5SHaiyang Zhang xdp_rxq_info_unreg(&rxq->xdp_rxq); 1875ed5356b5SHaiyang Zhang 1876e1b5683fSHaiyang Zhang netif_napi_del(napi); 1877ca9c54d2SDexuan Cui 1878ca9c54d2SDexuan Cui mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj); 1879ca9c54d2SDexuan Cui 1880ca9c54d2SDexuan Cui mana_deinit_cq(apc, &rxq->rx_cq); 1881ca9c54d2SDexuan Cui 1882a2917b23SHaiyang Zhang if (rxq->xdp_save_va) 1883a2917b23SHaiyang Zhang put_page(virt_to_head_page(rxq->xdp_save_va)); 1884a6bf5703SHaiyang Zhang 1885ca9c54d2SDexuan Cui for (i = 0; i < rxq->num_rx_buf; i++) { 1886ca9c54d2SDexuan Cui rx_oob = &rxq->rx_oobs[i]; 1887ca9c54d2SDexuan Cui 1888ca9c54d2SDexuan Cui if (!rx_oob->buf_va) 1889ca9c54d2SDexuan Cui continue; 1890ca9c54d2SDexuan Cui 1891a2917b23SHaiyang Zhang dma_unmap_single(dev, rx_oob->sgl[0].address, 1892a2917b23SHaiyang Zhang rx_oob->sgl[0].size, DMA_FROM_DEVICE); 1893ca9c54d2SDexuan Cui 1894a2917b23SHaiyang Zhang put_page(virt_to_head_page(rx_oob->buf_va)); 1895ca9c54d2SDexuan Cui rx_oob->buf_va = NULL; 1896ca9c54d2SDexuan Cui } 1897ca9c54d2SDexuan Cui 1898ca9c54d2SDexuan Cui if (rxq->gdma_rq) 1899ca9c54d2SDexuan Cui mana_gd_destroy_queue(gc, rxq->gdma_rq); 1900ca9c54d2SDexuan Cui 1901ca9c54d2SDexuan Cui kfree(rxq); 1902ca9c54d2SDexuan Cui } 1903ca9c54d2SDexuan Cui 1904a2917b23SHaiyang Zhang static int mana_fill_rx_oob(struct mana_recv_buf_oob *rx_oob, u32 mem_key, 1905a2917b23SHaiyang Zhang struct mana_rxq *rxq, struct device *dev) 1906a2917b23SHaiyang Zhang { 190780f6215bSHaiyang Zhang struct mana_port_context *mpc = netdev_priv(rxq->ndev); 1908a2917b23SHaiyang Zhang dma_addr_t da; 1909a2917b23SHaiyang Zhang void *va; 1910a2917b23SHaiyang Zhang 191180f6215bSHaiyang Zhang if (mpc->rxbufs_pre) 191280f6215bSHaiyang Zhang va = mana_get_rxbuf_pre(rxq, &da); 191380f6215bSHaiyang Zhang else 1914a2917b23SHaiyang Zhang va = mana_get_rxfrag(rxq, dev, &da, false); 1915a2917b23SHaiyang Zhang 1916a2917b23SHaiyang Zhang if (!va) 1917a2917b23SHaiyang Zhang return -ENOMEM; 1918a2917b23SHaiyang Zhang 1919a2917b23SHaiyang Zhang rx_oob->buf_va = va; 1920a2917b23SHaiyang Zhang 1921a2917b23SHaiyang Zhang rx_oob->sgl[0].address = da; 1922a2917b23SHaiyang Zhang rx_oob->sgl[0].size = rxq->datasize; 1923a2917b23SHaiyang Zhang rx_oob->sgl[0].mem_key = mem_key; 1924a2917b23SHaiyang Zhang 1925a2917b23SHaiyang Zhang return 0; 1926a2917b23SHaiyang Zhang } 1927a2917b23SHaiyang Zhang 1928ca9c54d2SDexuan Cui #define MANA_WQE_HEADER_SIZE 16 1929ca9c54d2SDexuan Cui #define MANA_WQE_SGE_SIZE 16 1930ca9c54d2SDexuan Cui 1931ca9c54d2SDexuan Cui static int mana_alloc_rx_wqe(struct mana_port_context *apc, 1932ca9c54d2SDexuan Cui struct mana_rxq *rxq, u32 *rxq_size, u32 *cq_size) 1933ca9c54d2SDexuan Cui { 1934ca9c54d2SDexuan Cui struct gdma_context *gc = apc->ac->gdma_dev->gdma_context; 1935ca9c54d2SDexuan Cui struct mana_recv_buf_oob *rx_oob; 1936ca9c54d2SDexuan Cui struct device *dev = gc->dev; 1937ca9c54d2SDexuan Cui u32 buf_idx; 1938a2917b23SHaiyang Zhang int ret; 1939ca9c54d2SDexuan Cui 19402fbbd712SHaiyang Zhang WARN_ON(rxq->datasize == 0); 1941ca9c54d2SDexuan Cui 1942ca9c54d2SDexuan Cui *rxq_size = 0; 1943ca9c54d2SDexuan Cui *cq_size = 0; 1944ca9c54d2SDexuan Cui 1945ca9c54d2SDexuan Cui for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) { 1946ca9c54d2SDexuan Cui rx_oob = &rxq->rx_oobs[buf_idx]; 1947ca9c54d2SDexuan Cui memset(rx_oob, 0, sizeof(*rx_oob)); 1948ca9c54d2SDexuan Cui 1949ca9c54d2SDexuan Cui rx_oob->num_sge = 1; 1950a2917b23SHaiyang Zhang 1951a2917b23SHaiyang Zhang ret = mana_fill_rx_oob(rx_oob, apc->ac->gdma_dev->gpa_mkey, rxq, 1952a2917b23SHaiyang Zhang dev); 1953a2917b23SHaiyang Zhang if (ret) 1954a2917b23SHaiyang Zhang return ret; 1955ca9c54d2SDexuan Cui 1956ca9c54d2SDexuan Cui rx_oob->wqe_req.sgl = rx_oob->sgl; 1957ca9c54d2SDexuan Cui rx_oob->wqe_req.num_sge = rx_oob->num_sge; 1958ca9c54d2SDexuan Cui rx_oob->wqe_req.inline_oob_size = 0; 1959ca9c54d2SDexuan Cui rx_oob->wqe_req.inline_oob_data = NULL; 1960ca9c54d2SDexuan Cui rx_oob->wqe_req.flags = 0; 1961ca9c54d2SDexuan Cui rx_oob->wqe_req.client_data_unit = 0; 1962ca9c54d2SDexuan Cui 1963ca9c54d2SDexuan Cui *rxq_size += ALIGN(MANA_WQE_HEADER_SIZE + 1964ca9c54d2SDexuan Cui MANA_WQE_SGE_SIZE * rx_oob->num_sge, 32); 1965ca9c54d2SDexuan Cui *cq_size += COMP_ENTRY_SIZE; 1966ca9c54d2SDexuan Cui } 1967ca9c54d2SDexuan Cui 1968ca9c54d2SDexuan Cui return 0; 1969ca9c54d2SDexuan Cui } 1970ca9c54d2SDexuan Cui 1971ca9c54d2SDexuan Cui static int mana_push_wqe(struct mana_rxq *rxq) 1972ca9c54d2SDexuan Cui { 1973ca9c54d2SDexuan Cui struct mana_recv_buf_oob *rx_oob; 1974ca9c54d2SDexuan Cui u32 buf_idx; 1975ca9c54d2SDexuan Cui int err; 1976ca9c54d2SDexuan Cui 1977ca9c54d2SDexuan Cui for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) { 1978ca9c54d2SDexuan Cui rx_oob = &rxq->rx_oobs[buf_idx]; 1979ca9c54d2SDexuan Cui 1980ca9c54d2SDexuan Cui err = mana_gd_post_and_ring(rxq->gdma_rq, &rx_oob->wqe_req, 1981ca9c54d2SDexuan Cui &rx_oob->wqe_inf); 1982ca9c54d2SDexuan Cui if (err) 1983ca9c54d2SDexuan Cui return -ENOSPC; 1984ca9c54d2SDexuan Cui } 1985ca9c54d2SDexuan Cui 1986ca9c54d2SDexuan Cui return 0; 1987ca9c54d2SDexuan Cui } 1988ca9c54d2SDexuan Cui 1989ca9c54d2SDexuan Cui static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc, 1990ca9c54d2SDexuan Cui u32 rxq_idx, struct mana_eq *eq, 1991ca9c54d2SDexuan Cui struct net_device *ndev) 1992ca9c54d2SDexuan Cui { 1993ca9c54d2SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 1994ca9c54d2SDexuan Cui struct mana_obj_spec wq_spec; 1995ca9c54d2SDexuan Cui struct mana_obj_spec cq_spec; 1996ca9c54d2SDexuan Cui struct gdma_queue_spec spec; 1997ca9c54d2SDexuan Cui struct mana_cq *cq = NULL; 1998ca9c54d2SDexuan Cui struct gdma_context *gc; 1999ca9c54d2SDexuan Cui u32 cq_size, rq_size; 2000ca9c54d2SDexuan Cui struct mana_rxq *rxq; 2001ca9c54d2SDexuan Cui int err; 2002ca9c54d2SDexuan Cui 2003ca9c54d2SDexuan Cui gc = gd->gdma_context; 2004ca9c54d2SDexuan Cui 2005ea89c862SGustavo A. R. Silva rxq = kzalloc(struct_size(rxq, rx_oobs, RX_BUFFERS_PER_QUEUE), 2006ca9c54d2SDexuan Cui GFP_KERNEL); 2007ca9c54d2SDexuan Cui if (!rxq) 2008ca9c54d2SDexuan Cui return NULL; 2009ca9c54d2SDexuan Cui 2010ca9c54d2SDexuan Cui rxq->ndev = ndev; 2011ca9c54d2SDexuan Cui rxq->num_rx_buf = RX_BUFFERS_PER_QUEUE; 2012ca9c54d2SDexuan Cui rxq->rxq_idx = rxq_idx; 2013ca9c54d2SDexuan Cui rxq->rxobj = INVALID_MANA_HANDLE; 2014ca9c54d2SDexuan Cui 201580f6215bSHaiyang Zhang mana_get_rxbuf_cfg(ndev->mtu, &rxq->datasize, &rxq->alloc_size, 201680f6215bSHaiyang Zhang &rxq->headroom); 2017a2917b23SHaiyang Zhang 2018ca9c54d2SDexuan Cui err = mana_alloc_rx_wqe(apc, rxq, &rq_size, &cq_size); 2019ca9c54d2SDexuan Cui if (err) 2020ca9c54d2SDexuan Cui goto out; 2021ca9c54d2SDexuan Cui 2022ca9c54d2SDexuan Cui rq_size = PAGE_ALIGN(rq_size); 2023ca9c54d2SDexuan Cui cq_size = PAGE_ALIGN(cq_size); 2024ca9c54d2SDexuan Cui 2025ca9c54d2SDexuan Cui /* Create RQ */ 2026ca9c54d2SDexuan Cui memset(&spec, 0, sizeof(spec)); 2027ca9c54d2SDexuan Cui spec.type = GDMA_RQ; 2028ca9c54d2SDexuan Cui spec.monitor_avl_buf = true; 2029ca9c54d2SDexuan Cui spec.queue_size = rq_size; 2030ca9c54d2SDexuan Cui err = mana_gd_create_mana_wq_cq(gd, &spec, &rxq->gdma_rq); 2031ca9c54d2SDexuan Cui if (err) 2032ca9c54d2SDexuan Cui goto out; 2033ca9c54d2SDexuan Cui 2034ca9c54d2SDexuan Cui /* Create RQ's CQ */ 2035ca9c54d2SDexuan Cui cq = &rxq->rx_cq; 2036ca9c54d2SDexuan Cui cq->type = MANA_CQ_TYPE_RX; 2037ca9c54d2SDexuan Cui cq->rxq = rxq; 2038ca9c54d2SDexuan Cui 2039ca9c54d2SDexuan Cui memset(&spec, 0, sizeof(spec)); 2040ca9c54d2SDexuan Cui spec.type = GDMA_CQ; 2041ca9c54d2SDexuan Cui spec.monitor_avl_buf = false; 2042ca9c54d2SDexuan Cui spec.queue_size = cq_size; 2043e1b5683fSHaiyang Zhang spec.cq.callback = mana_schedule_napi; 2044ca9c54d2SDexuan Cui spec.cq.parent_eq = eq->eq; 2045ca9c54d2SDexuan Cui spec.cq.context = cq; 2046ca9c54d2SDexuan Cui err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq); 2047ca9c54d2SDexuan Cui if (err) 2048ca9c54d2SDexuan Cui goto out; 2049ca9c54d2SDexuan Cui 2050ca9c54d2SDexuan Cui memset(&wq_spec, 0, sizeof(wq_spec)); 2051ca9c54d2SDexuan Cui memset(&cq_spec, 0, sizeof(cq_spec)); 205228c66cfaSAjay Sharma wq_spec.gdma_region = rxq->gdma_rq->mem_info.dma_region_handle; 2053ca9c54d2SDexuan Cui wq_spec.queue_size = rxq->gdma_rq->queue_size; 2054ca9c54d2SDexuan Cui 205528c66cfaSAjay Sharma cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; 2056ca9c54d2SDexuan Cui cq_spec.queue_size = cq->gdma_cq->queue_size; 2057ca9c54d2SDexuan Cui cq_spec.modr_ctx_id = 0; 2058ca9c54d2SDexuan Cui cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; 2059ca9c54d2SDexuan Cui 2060ca9c54d2SDexuan Cui err = mana_create_wq_obj(apc, apc->port_handle, GDMA_RQ, 2061ca9c54d2SDexuan Cui &wq_spec, &cq_spec, &rxq->rxobj); 2062ca9c54d2SDexuan Cui if (err) 2063ca9c54d2SDexuan Cui goto out; 2064ca9c54d2SDexuan Cui 2065ca9c54d2SDexuan Cui rxq->gdma_rq->id = wq_spec.queue_index; 2066ca9c54d2SDexuan Cui cq->gdma_cq->id = cq_spec.queue_index; 2067ca9c54d2SDexuan Cui 206828c66cfaSAjay Sharma rxq->gdma_rq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; 206928c66cfaSAjay Sharma cq->gdma_cq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; 2070ca9c54d2SDexuan Cui 2071ca9c54d2SDexuan Cui rxq->gdma_id = rxq->gdma_rq->id; 2072ca9c54d2SDexuan Cui cq->gdma_id = cq->gdma_cq->id; 2073ca9c54d2SDexuan Cui 2074ca9c54d2SDexuan Cui err = mana_push_wqe(rxq); 2075ca9c54d2SDexuan Cui if (err) 2076ca9c54d2SDexuan Cui goto out; 2077ca9c54d2SDexuan Cui 2078be049936SHaiyang Zhang if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) { 2079be049936SHaiyang Zhang err = -EINVAL; 2080ca9c54d2SDexuan Cui goto out; 2081be049936SHaiyang Zhang } 2082ca9c54d2SDexuan Cui 2083ca9c54d2SDexuan Cui gc->cq_table[cq->gdma_id] = cq->gdma_cq; 2084ca9c54d2SDexuan Cui 2085b707b89fSJakub Kicinski netif_napi_add_weight(ndev, &cq->napi, mana_poll, 1); 2086ed5356b5SHaiyang Zhang 2087ed5356b5SHaiyang Zhang WARN_ON(xdp_rxq_info_reg(&rxq->xdp_rxq, ndev, rxq_idx, 2088ed5356b5SHaiyang Zhang cq->napi.napi_id)); 2089ed5356b5SHaiyang Zhang WARN_ON(xdp_rxq_info_reg_mem_model(&rxq->xdp_rxq, 2090ed5356b5SHaiyang Zhang MEM_TYPE_PAGE_SHARED, NULL)); 2091ed5356b5SHaiyang Zhang 2092e1b5683fSHaiyang Zhang napi_enable(&cq->napi); 2093e1b5683fSHaiyang Zhang 2094e1b5683fSHaiyang Zhang mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT); 2095ca9c54d2SDexuan Cui out: 2096ca9c54d2SDexuan Cui if (!err) 2097ca9c54d2SDexuan Cui return rxq; 2098ca9c54d2SDexuan Cui 2099ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to create RXQ: err = %d\n", err); 2100ca9c54d2SDexuan Cui 2101ca9c54d2SDexuan Cui mana_destroy_rxq(apc, rxq, false); 2102ca9c54d2SDexuan Cui 2103ca9c54d2SDexuan Cui if (cq) 2104ca9c54d2SDexuan Cui mana_deinit_cq(apc, cq); 2105ca9c54d2SDexuan Cui 2106ca9c54d2SDexuan Cui return NULL; 2107ca9c54d2SDexuan Cui } 2108ca9c54d2SDexuan Cui 2109ca9c54d2SDexuan Cui static int mana_add_rx_queues(struct mana_port_context *apc, 2110ca9c54d2SDexuan Cui struct net_device *ndev) 2111ca9c54d2SDexuan Cui { 21121e2d0824SHaiyang Zhang struct mana_context *ac = apc->ac; 2113ca9c54d2SDexuan Cui struct mana_rxq *rxq; 2114ca9c54d2SDexuan Cui int err = 0; 2115ca9c54d2SDexuan Cui int i; 2116ca9c54d2SDexuan Cui 2117ca9c54d2SDexuan Cui for (i = 0; i < apc->num_queues; i++) { 21181e2d0824SHaiyang Zhang rxq = mana_create_rxq(apc, i, &ac->eqs[i], ndev); 2119ca9c54d2SDexuan Cui if (!rxq) { 2120ca9c54d2SDexuan Cui err = -ENOMEM; 2121ca9c54d2SDexuan Cui goto out; 2122ca9c54d2SDexuan Cui } 2123ca9c54d2SDexuan Cui 2124ca9c54d2SDexuan Cui u64_stats_init(&rxq->stats.syncp); 2125ca9c54d2SDexuan Cui 2126ca9c54d2SDexuan Cui apc->rxqs[i] = rxq; 2127ca9c54d2SDexuan Cui } 2128ca9c54d2SDexuan Cui 2129ca9c54d2SDexuan Cui apc->default_rxobj = apc->rxqs[0]->rxobj; 2130ca9c54d2SDexuan Cui out: 2131ca9c54d2SDexuan Cui return err; 2132ca9c54d2SDexuan Cui } 2133ca9c54d2SDexuan Cui 2134ca9c54d2SDexuan Cui static void mana_destroy_vport(struct mana_port_context *apc) 2135ca9c54d2SDexuan Cui { 21361566e7d6SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 2137ca9c54d2SDexuan Cui struct mana_rxq *rxq; 2138ca9c54d2SDexuan Cui u32 rxq_idx; 2139ca9c54d2SDexuan Cui 2140ca9c54d2SDexuan Cui for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) { 2141ca9c54d2SDexuan Cui rxq = apc->rxqs[rxq_idx]; 2142ca9c54d2SDexuan Cui if (!rxq) 2143ca9c54d2SDexuan Cui continue; 2144ca9c54d2SDexuan Cui 2145ca9c54d2SDexuan Cui mana_destroy_rxq(apc, rxq, true); 2146ca9c54d2SDexuan Cui apc->rxqs[rxq_idx] = NULL; 2147ca9c54d2SDexuan Cui } 2148ca9c54d2SDexuan Cui 2149ca9c54d2SDexuan Cui mana_destroy_txq(apc); 2150b5c1c985SLong Li mana_uncfg_vport(apc); 21511566e7d6SDexuan Cui 21521566e7d6SDexuan Cui if (gd->gdma_context->is_pf) 21531566e7d6SDexuan Cui mana_pf_deregister_hw_vport(apc); 2154ca9c54d2SDexuan Cui } 2155ca9c54d2SDexuan Cui 2156ca9c54d2SDexuan Cui static int mana_create_vport(struct mana_port_context *apc, 2157ca9c54d2SDexuan Cui struct net_device *net) 2158ca9c54d2SDexuan Cui { 2159ca9c54d2SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 2160ca9c54d2SDexuan Cui int err; 2161ca9c54d2SDexuan Cui 2162ca9c54d2SDexuan Cui apc->default_rxobj = INVALID_MANA_HANDLE; 2163ca9c54d2SDexuan Cui 21641566e7d6SDexuan Cui if (gd->gdma_context->is_pf) { 21651566e7d6SDexuan Cui err = mana_pf_register_hw_vport(apc); 21661566e7d6SDexuan Cui if (err) 21671566e7d6SDexuan Cui return err; 21681566e7d6SDexuan Cui } 21691566e7d6SDexuan Cui 2170ca9c54d2SDexuan Cui err = mana_cfg_vport(apc, gd->pdid, gd->doorbell); 2171ca9c54d2SDexuan Cui if (err) 2172ca9c54d2SDexuan Cui return err; 2173ca9c54d2SDexuan Cui 2174ca9c54d2SDexuan Cui return mana_create_txq(apc, net); 2175ca9c54d2SDexuan Cui } 2176ca9c54d2SDexuan Cui 2177ca9c54d2SDexuan Cui static void mana_rss_table_init(struct mana_port_context *apc) 2178ca9c54d2SDexuan Cui { 2179ca9c54d2SDexuan Cui int i; 2180ca9c54d2SDexuan Cui 2181ca9c54d2SDexuan Cui for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) 2182ca9c54d2SDexuan Cui apc->indir_table[i] = 2183ca9c54d2SDexuan Cui ethtool_rxfh_indir_default(i, apc->num_queues); 2184ca9c54d2SDexuan Cui } 2185ca9c54d2SDexuan Cui 2186ca9c54d2SDexuan Cui int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx, 2187ca9c54d2SDexuan Cui bool update_hash, bool update_tab) 2188ca9c54d2SDexuan Cui { 2189ca9c54d2SDexuan Cui u32 queue_idx; 21906cc74443SDexuan Cui int err; 2191ca9c54d2SDexuan Cui int i; 2192ca9c54d2SDexuan Cui 2193ca9c54d2SDexuan Cui if (update_tab) { 2194ca9c54d2SDexuan Cui for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { 2195ca9c54d2SDexuan Cui queue_idx = apc->indir_table[i]; 2196ca9c54d2SDexuan Cui apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj; 2197ca9c54d2SDexuan Cui } 2198ca9c54d2SDexuan Cui } 2199ca9c54d2SDexuan Cui 22006cc74443SDexuan Cui err = mana_cfg_vport_steering(apc, rx, true, update_hash, update_tab); 22016cc74443SDexuan Cui if (err) 22026cc74443SDexuan Cui return err; 22036cc74443SDexuan Cui 22046cc74443SDexuan Cui mana_fence_rqs(apc); 22056cc74443SDexuan Cui 22066cc74443SDexuan Cui return 0; 2207ca9c54d2SDexuan Cui } 2208ca9c54d2SDexuan Cui 2209ca9c54d2SDexuan Cui static int mana_init_port(struct net_device *ndev) 2210ca9c54d2SDexuan Cui { 2211ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 2212ca9c54d2SDexuan Cui u32 max_txq, max_rxq, max_queues; 2213ca9c54d2SDexuan Cui int port_idx = apc->port_idx; 2214ca9c54d2SDexuan Cui u32 num_indirect_entries; 2215ca9c54d2SDexuan Cui int err; 2216ca9c54d2SDexuan Cui 2217ca9c54d2SDexuan Cui err = mana_init_port_context(apc); 2218ca9c54d2SDexuan Cui if (err) 2219ca9c54d2SDexuan Cui return err; 2220ca9c54d2SDexuan Cui 2221ca9c54d2SDexuan Cui err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq, 2222ca9c54d2SDexuan Cui &num_indirect_entries); 2223ca9c54d2SDexuan Cui if (err) { 22246c7ea696SDexuan Cui netdev_err(ndev, "Failed to query info for vPort %d\n", 22256c7ea696SDexuan Cui port_idx); 2226ca9c54d2SDexuan Cui goto reset_apc; 2227ca9c54d2SDexuan Cui } 2228ca9c54d2SDexuan Cui 2229ca9c54d2SDexuan Cui max_queues = min_t(u32, max_txq, max_rxq); 2230ca9c54d2SDexuan Cui if (apc->max_queues > max_queues) 2231ca9c54d2SDexuan Cui apc->max_queues = max_queues; 2232ca9c54d2SDexuan Cui 2233ca9c54d2SDexuan Cui if (apc->num_queues > apc->max_queues) 2234ca9c54d2SDexuan Cui apc->num_queues = apc->max_queues; 2235ca9c54d2SDexuan Cui 2236f3956ebbSJakub Kicinski eth_hw_addr_set(ndev, apc->mac_addr); 2237ca9c54d2SDexuan Cui 2238ca9c54d2SDexuan Cui return 0; 2239ca9c54d2SDexuan Cui 2240ca9c54d2SDexuan Cui reset_apc: 2241ca9c54d2SDexuan Cui kfree(apc->rxqs); 2242ca9c54d2SDexuan Cui apc->rxqs = NULL; 2243ca9c54d2SDexuan Cui return err; 2244ca9c54d2SDexuan Cui } 2245ca9c54d2SDexuan Cui 2246ca9c54d2SDexuan Cui int mana_alloc_queues(struct net_device *ndev) 2247ca9c54d2SDexuan Cui { 2248ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 22491566e7d6SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 2250ca9c54d2SDexuan Cui int err; 2251ca9c54d2SDexuan Cui 2252ca9c54d2SDexuan Cui err = mana_create_vport(apc, ndev); 2253ca9c54d2SDexuan Cui if (err) 22541e2d0824SHaiyang Zhang return err; 2255ca9c54d2SDexuan Cui 2256ca9c54d2SDexuan Cui err = netif_set_real_num_tx_queues(ndev, apc->num_queues); 2257ca9c54d2SDexuan Cui if (err) 2258ca9c54d2SDexuan Cui goto destroy_vport; 2259ca9c54d2SDexuan Cui 2260ca9c54d2SDexuan Cui err = mana_add_rx_queues(apc, ndev); 2261ca9c54d2SDexuan Cui if (err) 2262ca9c54d2SDexuan Cui goto destroy_vport; 2263ca9c54d2SDexuan Cui 2264ca9c54d2SDexuan Cui apc->rss_state = apc->num_queues > 1 ? TRI_STATE_TRUE : TRI_STATE_FALSE; 2265ca9c54d2SDexuan Cui 2266ca9c54d2SDexuan Cui err = netif_set_real_num_rx_queues(ndev, apc->num_queues); 2267ca9c54d2SDexuan Cui if (err) 2268ca9c54d2SDexuan Cui goto destroy_vport; 2269ca9c54d2SDexuan Cui 2270ca9c54d2SDexuan Cui mana_rss_table_init(apc); 2271ca9c54d2SDexuan Cui 2272ca9c54d2SDexuan Cui err = mana_config_rss(apc, TRI_STATE_TRUE, true, true); 2273ca9c54d2SDexuan Cui if (err) 2274ca9c54d2SDexuan Cui goto destroy_vport; 2275ca9c54d2SDexuan Cui 22761566e7d6SDexuan Cui if (gd->gdma_context->is_pf) { 22771566e7d6SDexuan Cui err = mana_pf_register_filter(apc); 22781566e7d6SDexuan Cui if (err) 22791566e7d6SDexuan Cui goto destroy_vport; 22801566e7d6SDexuan Cui } 22811566e7d6SDexuan Cui 2282ed5356b5SHaiyang Zhang mana_chn_setxdp(apc, mana_xdp_get(apc)); 2283ed5356b5SHaiyang Zhang 2284ca9c54d2SDexuan Cui return 0; 2285ca9c54d2SDexuan Cui 2286ca9c54d2SDexuan Cui destroy_vport: 2287ca9c54d2SDexuan Cui mana_destroy_vport(apc); 2288ca9c54d2SDexuan Cui return err; 2289ca9c54d2SDexuan Cui } 2290ca9c54d2SDexuan Cui 2291ca9c54d2SDexuan Cui int mana_attach(struct net_device *ndev) 2292ca9c54d2SDexuan Cui { 2293ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 2294ca9c54d2SDexuan Cui int err; 2295ca9c54d2SDexuan Cui 2296ca9c54d2SDexuan Cui ASSERT_RTNL(); 2297ca9c54d2SDexuan Cui 2298ca9c54d2SDexuan Cui err = mana_init_port(ndev); 2299ca9c54d2SDexuan Cui if (err) 2300ca9c54d2SDexuan Cui return err; 2301ca9c54d2SDexuan Cui 2302a137c069SHaiyang Zhang if (apc->port_st_save) { 2303ca9c54d2SDexuan Cui err = mana_alloc_queues(ndev); 2304ca9c54d2SDexuan Cui if (err) { 2305a137c069SHaiyang Zhang mana_cleanup_port_context(apc); 2306ca9c54d2SDexuan Cui return err; 2307ca9c54d2SDexuan Cui } 2308a137c069SHaiyang Zhang } 2309ca9c54d2SDexuan Cui 2310ca9c54d2SDexuan Cui apc->port_is_up = apc->port_st_save; 2311ca9c54d2SDexuan Cui 2312ca9c54d2SDexuan Cui /* Ensure port state updated before txq state */ 2313ca9c54d2SDexuan Cui smp_wmb(); 2314ca9c54d2SDexuan Cui 2315a137c069SHaiyang Zhang if (apc->port_is_up) 2316ca9c54d2SDexuan Cui netif_carrier_on(ndev); 2317a137c069SHaiyang Zhang 2318a137c069SHaiyang Zhang netif_device_attach(ndev); 2319ca9c54d2SDexuan Cui 2320ca9c54d2SDexuan Cui return 0; 2321ca9c54d2SDexuan Cui } 2322ca9c54d2SDexuan Cui 2323ca9c54d2SDexuan Cui static int mana_dealloc_queues(struct net_device *ndev) 2324ca9c54d2SDexuan Cui { 2325ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 23261566e7d6SDexuan Cui struct gdma_dev *gd = apc->ac->gdma_dev; 2327ca9c54d2SDexuan Cui struct mana_txq *txq; 2328ca9c54d2SDexuan Cui int i, err; 2329ca9c54d2SDexuan Cui 2330ca9c54d2SDexuan Cui if (apc->port_is_up) 2331ca9c54d2SDexuan Cui return -EINVAL; 2332ca9c54d2SDexuan Cui 2333ed5356b5SHaiyang Zhang mana_chn_setxdp(apc, NULL); 2334ed5356b5SHaiyang Zhang 23351566e7d6SDexuan Cui if (gd->gdma_context->is_pf) 23361566e7d6SDexuan Cui mana_pf_deregister_filter(apc); 23371566e7d6SDexuan Cui 2338ca9c54d2SDexuan Cui /* No packet can be transmitted now since apc->port_is_up is false. 2339ca9c54d2SDexuan Cui * There is still a tiny chance that mana_poll_tx_cq() can re-enable 2340ca9c54d2SDexuan Cui * a txq because it may not timely see apc->port_is_up being cleared 2341ca9c54d2SDexuan Cui * to false, but it doesn't matter since mana_start_xmit() drops any 2342ca9c54d2SDexuan Cui * new packets due to apc->port_is_up being false. 2343ca9c54d2SDexuan Cui * 2344ca9c54d2SDexuan Cui * Drain all the in-flight TX packets 2345ca9c54d2SDexuan Cui */ 2346ca9c54d2SDexuan Cui for (i = 0; i < apc->num_queues; i++) { 2347ca9c54d2SDexuan Cui txq = &apc->tx_qp[i].txq; 2348ca9c54d2SDexuan Cui 2349ca9c54d2SDexuan Cui while (atomic_read(&txq->pending_sends) > 0) 2350ca9c54d2SDexuan Cui usleep_range(1000, 2000); 2351ca9c54d2SDexuan Cui } 2352ca9c54d2SDexuan Cui 2353ca9c54d2SDexuan Cui /* We're 100% sure the queues can no longer be woken up, because 2354ca9c54d2SDexuan Cui * we're sure now mana_poll_tx_cq() can't be running. 2355ca9c54d2SDexuan Cui */ 2356ca9c54d2SDexuan Cui 2357ca9c54d2SDexuan Cui apc->rss_state = TRI_STATE_FALSE; 2358ca9c54d2SDexuan Cui err = mana_config_rss(apc, TRI_STATE_FALSE, false, false); 2359ca9c54d2SDexuan Cui if (err) { 2360ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to disable vPort: %d\n", err); 2361ca9c54d2SDexuan Cui return err; 2362ca9c54d2SDexuan Cui } 2363ca9c54d2SDexuan Cui 2364ca9c54d2SDexuan Cui mana_destroy_vport(apc); 2365ca9c54d2SDexuan Cui 2366ca9c54d2SDexuan Cui return 0; 2367ca9c54d2SDexuan Cui } 2368ca9c54d2SDexuan Cui 2369ca9c54d2SDexuan Cui int mana_detach(struct net_device *ndev, bool from_close) 2370ca9c54d2SDexuan Cui { 2371ca9c54d2SDexuan Cui struct mana_port_context *apc = netdev_priv(ndev); 2372ca9c54d2SDexuan Cui int err; 2373ca9c54d2SDexuan Cui 2374ca9c54d2SDexuan Cui ASSERT_RTNL(); 2375ca9c54d2SDexuan Cui 2376ca9c54d2SDexuan Cui apc->port_st_save = apc->port_is_up; 2377ca9c54d2SDexuan Cui apc->port_is_up = false; 2378ca9c54d2SDexuan Cui 2379ca9c54d2SDexuan Cui /* Ensure port state updated before txq state */ 2380ca9c54d2SDexuan Cui smp_wmb(); 2381ca9c54d2SDexuan Cui 2382ca9c54d2SDexuan Cui netif_tx_disable(ndev); 2383ca9c54d2SDexuan Cui netif_carrier_off(ndev); 2384ca9c54d2SDexuan Cui 2385ca9c54d2SDexuan Cui if (apc->port_st_save) { 2386ca9c54d2SDexuan Cui err = mana_dealloc_queues(ndev); 2387ca9c54d2SDexuan Cui if (err) 2388ca9c54d2SDexuan Cui return err; 2389ca9c54d2SDexuan Cui } 2390ca9c54d2SDexuan Cui 2391ca9c54d2SDexuan Cui if (!from_close) { 2392ca9c54d2SDexuan Cui netif_device_detach(ndev); 2393ca9c54d2SDexuan Cui mana_cleanup_port_context(apc); 2394ca9c54d2SDexuan Cui } 2395ca9c54d2SDexuan Cui 2396ca9c54d2SDexuan Cui return 0; 2397ca9c54d2SDexuan Cui } 2398ca9c54d2SDexuan Cui 2399ca9c54d2SDexuan Cui static int mana_probe_port(struct mana_context *ac, int port_idx, 2400ca9c54d2SDexuan Cui struct net_device **ndev_storage) 2401ca9c54d2SDexuan Cui { 2402ca9c54d2SDexuan Cui struct gdma_context *gc = ac->gdma_dev->gdma_context; 2403ca9c54d2SDexuan Cui struct mana_port_context *apc; 2404ca9c54d2SDexuan Cui struct net_device *ndev; 2405ca9c54d2SDexuan Cui int err; 2406ca9c54d2SDexuan Cui 2407ca9c54d2SDexuan Cui ndev = alloc_etherdev_mq(sizeof(struct mana_port_context), 2408ca9c54d2SDexuan Cui gc->max_num_queues); 2409ca9c54d2SDexuan Cui if (!ndev) 2410ca9c54d2SDexuan Cui return -ENOMEM; 2411ca9c54d2SDexuan Cui 2412ca9c54d2SDexuan Cui *ndev_storage = ndev; 2413ca9c54d2SDexuan Cui 2414ca9c54d2SDexuan Cui apc = netdev_priv(ndev); 2415ca9c54d2SDexuan Cui apc->ac = ac; 2416ca9c54d2SDexuan Cui apc->ndev = ndev; 2417ca9c54d2SDexuan Cui apc->max_queues = gc->max_num_queues; 24181e2d0824SHaiyang Zhang apc->num_queues = gc->max_num_queues; 2419ca9c54d2SDexuan Cui apc->port_handle = INVALID_MANA_HANDLE; 24201566e7d6SDexuan Cui apc->pf_filter_handle = INVALID_MANA_HANDLE; 2421ca9c54d2SDexuan Cui apc->port_idx = port_idx; 2422ca9c54d2SDexuan Cui 2423b5c1c985SLong Li mutex_init(&apc->vport_mutex); 2424b5c1c985SLong Li apc->vport_use_count = 0; 2425b5c1c985SLong Li 2426ca9c54d2SDexuan Cui ndev->netdev_ops = &mana_devops; 2427ca9c54d2SDexuan Cui ndev->ethtool_ops = &mana_ethtool_ops; 2428ca9c54d2SDexuan Cui ndev->mtu = ETH_DATA_LEN; 242980f6215bSHaiyang Zhang ndev->max_mtu = gc->adapter_mtu - ETH_HLEN; 243080f6215bSHaiyang Zhang ndev->min_mtu = ETH_MIN_MTU; 2431ca9c54d2SDexuan Cui ndev->needed_headroom = MANA_HEADROOM; 2432d44089e5SLong Li ndev->dev_port = port_idx; 2433ca9c54d2SDexuan Cui SET_NETDEV_DEV(ndev, gc->dev); 2434ca9c54d2SDexuan Cui 2435ca9c54d2SDexuan Cui netif_carrier_off(ndev); 2436ca9c54d2SDexuan Cui 2437ca9c54d2SDexuan Cui netdev_rss_key_fill(apc->hashkey, MANA_HASH_KEY_SIZE); 2438ca9c54d2SDexuan Cui 2439ca9c54d2SDexuan Cui err = mana_init_port(ndev); 2440ca9c54d2SDexuan Cui if (err) 2441ca9c54d2SDexuan Cui goto free_net; 2442ca9c54d2SDexuan Cui 2443ca9c54d2SDexuan Cui netdev_lockdep_set_classes(ndev); 2444ca9c54d2SDexuan Cui 2445ca9c54d2SDexuan Cui ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2446ca9c54d2SDexuan Cui ndev->hw_features |= NETIF_F_RXCSUM; 2447ca9c54d2SDexuan Cui ndev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2448ca9c54d2SDexuan Cui ndev->hw_features |= NETIF_F_RXHASH; 2449ca9c54d2SDexuan Cui ndev->features = ndev->hw_features; 2450ca9c54d2SDexuan Cui ndev->vlan_features = 0; 245166c0e13aSMarek Majtyka ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 245266c0e13aSMarek Majtyka NETDEV_XDP_ACT_NDO_XMIT; 2453ca9c54d2SDexuan Cui 2454ca9c54d2SDexuan Cui err = register_netdev(ndev); 2455ca9c54d2SDexuan Cui if (err) { 2456ca9c54d2SDexuan Cui netdev_err(ndev, "Unable to register netdev.\n"); 2457ca9c54d2SDexuan Cui goto reset_apc; 2458ca9c54d2SDexuan Cui } 2459ca9c54d2SDexuan Cui 2460ca9c54d2SDexuan Cui return 0; 2461ca9c54d2SDexuan Cui 2462ca9c54d2SDexuan Cui reset_apc: 2463ca9c54d2SDexuan Cui kfree(apc->rxqs); 2464ca9c54d2SDexuan Cui apc->rxqs = NULL; 2465ca9c54d2SDexuan Cui free_net: 2466ca9c54d2SDexuan Cui *ndev_storage = NULL; 2467ca9c54d2SDexuan Cui netdev_err(ndev, "Failed to probe vPort %d: %d\n", port_idx, err); 2468ca9c54d2SDexuan Cui free_netdev(ndev); 2469ca9c54d2SDexuan Cui return err; 2470ca9c54d2SDexuan Cui } 2471ca9c54d2SDexuan Cui 2472a69839d4SLong Li static void adev_release(struct device *dev) 2473a69839d4SLong Li { 2474a69839d4SLong Li struct mana_adev *madev = container_of(dev, struct mana_adev, adev.dev); 2475a69839d4SLong Li 2476a69839d4SLong Li kfree(madev); 2477a69839d4SLong Li } 2478a69839d4SLong Li 2479a69839d4SLong Li static void remove_adev(struct gdma_dev *gd) 2480a69839d4SLong Li { 2481a69839d4SLong Li struct auxiliary_device *adev = gd->adev; 2482a69839d4SLong Li int id = adev->id; 2483a69839d4SLong Li 2484a69839d4SLong Li auxiliary_device_delete(adev); 2485a69839d4SLong Li auxiliary_device_uninit(adev); 2486a69839d4SLong Li 2487a69839d4SLong Li mana_adev_idx_free(id); 2488a69839d4SLong Li gd->adev = NULL; 2489a69839d4SLong Li } 2490a69839d4SLong Li 2491a69839d4SLong Li static int add_adev(struct gdma_dev *gd) 2492a69839d4SLong Li { 2493a69839d4SLong Li struct auxiliary_device *adev; 2494a69839d4SLong Li struct mana_adev *madev; 2495a69839d4SLong Li int ret; 2496a69839d4SLong Li 2497a69839d4SLong Li madev = kzalloc(sizeof(*madev), GFP_KERNEL); 2498a69839d4SLong Li if (!madev) 2499a69839d4SLong Li return -ENOMEM; 2500a69839d4SLong Li 2501a69839d4SLong Li adev = &madev->adev; 2502a69839d4SLong Li ret = mana_adev_idx_alloc(); 2503a69839d4SLong Li if (ret < 0) 2504a69839d4SLong Li goto idx_fail; 2505a69839d4SLong Li adev->id = ret; 2506a69839d4SLong Li 2507a69839d4SLong Li adev->name = "rdma"; 2508a69839d4SLong Li adev->dev.parent = gd->gdma_context->dev; 2509a69839d4SLong Li adev->dev.release = adev_release; 2510a69839d4SLong Li madev->mdev = gd; 2511a69839d4SLong Li 2512a69839d4SLong Li ret = auxiliary_device_init(adev); 2513a69839d4SLong Li if (ret) 2514a69839d4SLong Li goto init_fail; 2515a69839d4SLong Li 2516a69839d4SLong Li ret = auxiliary_device_add(adev); 2517a69839d4SLong Li if (ret) 2518a69839d4SLong Li goto add_fail; 2519a69839d4SLong Li 2520a69839d4SLong Li gd->adev = adev; 2521a69839d4SLong Li return 0; 2522a69839d4SLong Li 2523a69839d4SLong Li add_fail: 2524a69839d4SLong Li auxiliary_device_uninit(adev); 2525a69839d4SLong Li 2526a69839d4SLong Li init_fail: 2527a69839d4SLong Li mana_adev_idx_free(adev->id); 2528a69839d4SLong Li 2529a69839d4SLong Li idx_fail: 2530a69839d4SLong Li kfree(madev); 2531a69839d4SLong Li 2532a69839d4SLong Li return ret; 2533a69839d4SLong Li } 2534a69839d4SLong Li 2535635096a8SDexuan Cui int mana_probe(struct gdma_dev *gd, bool resuming) 2536ca9c54d2SDexuan Cui { 2537ca9c54d2SDexuan Cui struct gdma_context *gc = gd->gdma_context; 2538635096a8SDexuan Cui struct mana_context *ac = gd->driver_data; 2539ca9c54d2SDexuan Cui struct device *dev = gc->dev; 2540635096a8SDexuan Cui u16 num_ports = 0; 2541ca9c54d2SDexuan Cui int err; 2542ca9c54d2SDexuan Cui int i; 2543ca9c54d2SDexuan Cui 2544ca9c54d2SDexuan Cui dev_info(dev, 2545ca9c54d2SDexuan Cui "Microsoft Azure Network Adapter protocol version: %d.%d.%d\n", 2546ca9c54d2SDexuan Cui MANA_MAJOR_VERSION, MANA_MINOR_VERSION, MANA_MICRO_VERSION); 2547ca9c54d2SDexuan Cui 2548ca9c54d2SDexuan Cui err = mana_gd_register_device(gd); 2549ca9c54d2SDexuan Cui if (err) 2550ca9c54d2SDexuan Cui return err; 2551ca9c54d2SDexuan Cui 2552635096a8SDexuan Cui if (!resuming) { 2553ca9c54d2SDexuan Cui ac = kzalloc(sizeof(*ac), GFP_KERNEL); 2554ca9c54d2SDexuan Cui if (!ac) 2555ca9c54d2SDexuan Cui return -ENOMEM; 2556ca9c54d2SDexuan Cui 2557ca9c54d2SDexuan Cui ac->gdma_dev = gd; 2558ca9c54d2SDexuan Cui gd->driver_data = ac; 2559635096a8SDexuan Cui } 2560ca9c54d2SDexuan Cui 25611e2d0824SHaiyang Zhang err = mana_create_eq(ac); 25621e2d0824SHaiyang Zhang if (err) 25631e2d0824SHaiyang Zhang goto out; 25641e2d0824SHaiyang Zhang 2565ca9c54d2SDexuan Cui err = mana_query_device_cfg(ac, MANA_MAJOR_VERSION, MANA_MINOR_VERSION, 2566635096a8SDexuan Cui MANA_MICRO_VERSION, &num_ports); 2567ca9c54d2SDexuan Cui if (err) 2568ca9c54d2SDexuan Cui goto out; 2569ca9c54d2SDexuan Cui 2570635096a8SDexuan Cui if (!resuming) { 2571635096a8SDexuan Cui ac->num_ports = num_ports; 2572635096a8SDexuan Cui } else { 2573635096a8SDexuan Cui if (ac->num_ports != num_ports) { 2574635096a8SDexuan Cui dev_err(dev, "The number of vPorts changed: %d->%d\n", 2575635096a8SDexuan Cui ac->num_ports, num_ports); 2576635096a8SDexuan Cui err = -EPROTO; 2577635096a8SDexuan Cui goto out; 2578635096a8SDexuan Cui } 2579635096a8SDexuan Cui } 2580635096a8SDexuan Cui 2581635096a8SDexuan Cui if (ac->num_ports == 0) 2582635096a8SDexuan Cui dev_err(dev, "Failed to detect any vPort\n"); 2583635096a8SDexuan Cui 2584ca9c54d2SDexuan Cui if (ac->num_ports > MAX_PORTS_IN_MANA_DEV) 2585ca9c54d2SDexuan Cui ac->num_ports = MAX_PORTS_IN_MANA_DEV; 2586ca9c54d2SDexuan Cui 2587635096a8SDexuan Cui if (!resuming) { 2588ca9c54d2SDexuan Cui for (i = 0; i < ac->num_ports; i++) { 2589ca9c54d2SDexuan Cui err = mana_probe_port(ac, i, &ac->ports[i]); 2590ca9c54d2SDexuan Cui if (err) 2591ca9c54d2SDexuan Cui break; 2592ca9c54d2SDexuan Cui } 2593635096a8SDexuan Cui } else { 2594635096a8SDexuan Cui for (i = 0; i < ac->num_ports; i++) { 2595635096a8SDexuan Cui rtnl_lock(); 2596635096a8SDexuan Cui err = mana_attach(ac->ports[i]); 2597635096a8SDexuan Cui rtnl_unlock(); 2598635096a8SDexuan Cui if (err) 2599635096a8SDexuan Cui break; 2600635096a8SDexuan Cui } 2601635096a8SDexuan Cui } 2602a69839d4SLong Li 2603a69839d4SLong Li err = add_adev(gd); 2604ca9c54d2SDexuan Cui out: 2605ca9c54d2SDexuan Cui if (err) 2606635096a8SDexuan Cui mana_remove(gd, false); 2607ca9c54d2SDexuan Cui 2608ca9c54d2SDexuan Cui return err; 2609ca9c54d2SDexuan Cui } 2610ca9c54d2SDexuan Cui 2611635096a8SDexuan Cui void mana_remove(struct gdma_dev *gd, bool suspending) 2612ca9c54d2SDexuan Cui { 2613ca9c54d2SDexuan Cui struct gdma_context *gc = gd->gdma_context; 2614ca9c54d2SDexuan Cui struct mana_context *ac = gd->driver_data; 2615ca9c54d2SDexuan Cui struct device *dev = gc->dev; 2616ca9c54d2SDexuan Cui struct net_device *ndev; 2617635096a8SDexuan Cui int err; 2618ca9c54d2SDexuan Cui int i; 2619ca9c54d2SDexuan Cui 2620a69839d4SLong Li /* adev currently doesn't support suspending, always remove it */ 2621a69839d4SLong Li if (gd->adev) 2622a69839d4SLong Li remove_adev(gd); 2623a69839d4SLong Li 2624ca9c54d2SDexuan Cui for (i = 0; i < ac->num_ports; i++) { 2625ca9c54d2SDexuan Cui ndev = ac->ports[i]; 2626ca9c54d2SDexuan Cui if (!ndev) { 2627ca9c54d2SDexuan Cui if (i == 0) 2628ca9c54d2SDexuan Cui dev_err(dev, "No net device to remove\n"); 2629ca9c54d2SDexuan Cui goto out; 2630ca9c54d2SDexuan Cui } 2631ca9c54d2SDexuan Cui 2632ca9c54d2SDexuan Cui /* All cleanup actions should stay after rtnl_lock(), otherwise 2633ca9c54d2SDexuan Cui * other functions may access partially cleaned up data. 2634ca9c54d2SDexuan Cui */ 2635ca9c54d2SDexuan Cui rtnl_lock(); 2636ca9c54d2SDexuan Cui 2637635096a8SDexuan Cui err = mana_detach(ndev, false); 2638635096a8SDexuan Cui if (err) 2639635096a8SDexuan Cui netdev_err(ndev, "Failed to detach vPort %d: %d\n", 2640635096a8SDexuan Cui i, err); 2641635096a8SDexuan Cui 2642635096a8SDexuan Cui if (suspending) { 2643635096a8SDexuan Cui /* No need to unregister the ndev. */ 2644635096a8SDexuan Cui rtnl_unlock(); 2645635096a8SDexuan Cui continue; 2646635096a8SDexuan Cui } 2647ca9c54d2SDexuan Cui 2648ca9c54d2SDexuan Cui unregister_netdevice(ndev); 2649ca9c54d2SDexuan Cui 2650ca9c54d2SDexuan Cui rtnl_unlock(); 2651ca9c54d2SDexuan Cui 2652ca9c54d2SDexuan Cui free_netdev(ndev); 2653ca9c54d2SDexuan Cui } 26541e2d0824SHaiyang Zhang 26551e2d0824SHaiyang Zhang mana_destroy_eq(ac); 2656ca9c54d2SDexuan Cui out: 2657ca9c54d2SDexuan Cui mana_gd_deregister_device(gd); 2658635096a8SDexuan Cui 2659635096a8SDexuan Cui if (suspending) 2660635096a8SDexuan Cui return; 2661635096a8SDexuan Cui 2662ca9c54d2SDexuan Cui gd->driver_data = NULL; 2663ca9c54d2SDexuan Cui gd->gdma_context = NULL; 2664ca9c54d2SDexuan Cui kfree(ac); 2665ca9c54d2SDexuan Cui } 2666