1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright (c) 2021, Microsoft Corporation. */
4 #include <uapi/linux/bpf.h>
6 #include <linux/inetdevice.h>
7 #include <linux/etherdevice.h>
8 #include <linux/ethtool.h>
9 #include <linux/filter.h>
12 #include <net/checksum.h>
13 #include <net/ip6_checksum.h>
15 #include <net/mana/mana.h>
16 #include <net/mana/mana_auxiliary.h>
18 static DEFINE_IDA(mana_adev_ida);
20 static int mana_adev_idx_alloc(void)
22 return ida_alloc(&mana_adev_ida, GFP_KERNEL);
25 static void mana_adev_idx_free(int idx)
27 ida_free(&mana_adev_ida, idx);
30 /* Microsoft Azure Network Adapter (MANA) functions */
32 static int mana_open(struct net_device *ndev)
34 struct mana_port_context *apc = netdev_priv(ndev);
37 err = mana_alloc_queues(ndev);
41 apc->port_is_up = true;
43 /* Ensure port state updated before txq state */
46 netif_carrier_on(ndev);
47 netif_tx_wake_all_queues(ndev);
52 static int mana_close(struct net_device *ndev)
54 struct mana_port_context *apc = netdev_priv(ndev);
59 return mana_detach(ndev, true);
62 static bool mana_can_tx(struct gdma_queue *wq)
64 return mana_gd_wq_avail_space(wq) >= MAX_TX_WQE_SIZE;
67 static unsigned int mana_checksum_info(struct sk_buff *skb)
69 if (skb->protocol == htons(ETH_P_IP)) {
70 struct iphdr *ip = ip_hdr(skb);
72 if (ip->protocol == IPPROTO_TCP)
75 if (ip->protocol == IPPROTO_UDP)
77 } else if (skb->protocol == htons(ETH_P_IPV6)) {
78 struct ipv6hdr *ip6 = ipv6_hdr(skb);
80 if (ip6->nexthdr == IPPROTO_TCP)
83 if (ip6->nexthdr == IPPROTO_UDP)
87 /* No csum offloading */
91 static int mana_map_skb(struct sk_buff *skb, struct mana_port_context *apc,
92 struct mana_tx_package *tp)
94 struct mana_skb_head *ash = (struct mana_skb_head *)skb->head;
95 struct gdma_dev *gd = apc->ac->gdma_dev;
96 struct gdma_context *gc;
102 gc = gd->gdma_context;
104 da = dma_map_single(dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE);
106 if (dma_mapping_error(dev, da))
109 ash->dma_handle[0] = da;
110 ash->size[0] = skb_headlen(skb);
112 tp->wqe_req.sgl[0].address = ash->dma_handle[0];
113 tp->wqe_req.sgl[0].mem_key = gd->gpa_mkey;
114 tp->wqe_req.sgl[0].size = ash->size[0];
116 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
117 frag = &skb_shinfo(skb)->frags[i];
118 da = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag),
121 if (dma_mapping_error(dev, da))
124 ash->dma_handle[i + 1] = da;
125 ash->size[i + 1] = skb_frag_size(frag);
127 tp->wqe_req.sgl[i + 1].address = ash->dma_handle[i + 1];
128 tp->wqe_req.sgl[i + 1].mem_key = gd->gpa_mkey;
129 tp->wqe_req.sgl[i + 1].size = ash->size[i + 1];
135 for (i = i - 1; i >= 0; i--)
136 dma_unmap_page(dev, ash->dma_handle[i + 1], ash->size[i + 1],
139 dma_unmap_single(dev, ash->dma_handle[0], ash->size[0], DMA_TO_DEVICE);
144 netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev)
146 enum mana_tx_pkt_format pkt_fmt = MANA_SHORT_PKT_FMT;
147 struct mana_port_context *apc = netdev_priv(ndev);
148 u16 txq_idx = skb_get_queue_mapping(skb);
149 struct gdma_dev *gd = apc->ac->gdma_dev;
150 bool ipv4 = false, ipv6 = false;
151 struct mana_tx_package pkg = {};
152 struct netdev_queue *net_txq;
153 struct mana_stats_tx *tx_stats;
154 struct gdma_queue *gdma_sq;
155 unsigned int csum_type;
156 struct mana_txq *txq;
161 if (unlikely(!apc->port_is_up))
164 if (skb_cow_head(skb, MANA_HEADROOM))
167 txq = &apc->tx_qp[txq_idx].txq;
168 gdma_sq = txq->gdma_sq;
169 cq = &apc->tx_qp[txq_idx].tx_cq;
170 tx_stats = &txq->stats;
172 pkg.tx_oob.s_oob.vcq_num = cq->gdma_id;
173 pkg.tx_oob.s_oob.vsq_frame = txq->vsq_frame;
175 if (txq->vp_offset > MANA_SHORT_VPORT_OFFSET_MAX) {
176 pkg.tx_oob.l_oob.long_vp_offset = txq->vp_offset;
177 pkt_fmt = MANA_LONG_PKT_FMT;
179 pkg.tx_oob.s_oob.short_vp_offset = txq->vp_offset;
182 if (skb_vlan_tag_present(skb)) {
183 pkt_fmt = MANA_LONG_PKT_FMT;
184 pkg.tx_oob.l_oob.inject_vlan_pri_tag = 1;
185 pkg.tx_oob.l_oob.pcp = skb_vlan_tag_get_prio(skb);
186 pkg.tx_oob.l_oob.dei = skb_vlan_tag_get_cfi(skb);
187 pkg.tx_oob.l_oob.vlan_id = skb_vlan_tag_get_id(skb);
190 pkg.tx_oob.s_oob.pkt_fmt = pkt_fmt;
192 if (pkt_fmt == MANA_SHORT_PKT_FMT) {
193 pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_short_oob);
194 u64_stats_update_begin(&tx_stats->syncp);
195 tx_stats->short_pkt_fmt++;
196 u64_stats_update_end(&tx_stats->syncp);
198 pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_oob);
199 u64_stats_update_begin(&tx_stats->syncp);
200 tx_stats->long_pkt_fmt++;
201 u64_stats_update_end(&tx_stats->syncp);
204 pkg.wqe_req.inline_oob_data = &pkg.tx_oob;
205 pkg.wqe_req.flags = 0;
206 pkg.wqe_req.client_data_unit = 0;
208 pkg.wqe_req.num_sge = 1 + skb_shinfo(skb)->nr_frags;
209 WARN_ON_ONCE(pkg.wqe_req.num_sge > MAX_TX_WQE_SGL_ENTRIES);
211 if (pkg.wqe_req.num_sge <= ARRAY_SIZE(pkg.sgl_array)) {
212 pkg.wqe_req.sgl = pkg.sgl_array;
214 pkg.sgl_ptr = kmalloc_array(pkg.wqe_req.num_sge,
215 sizeof(struct gdma_sge),
220 pkg.wqe_req.sgl = pkg.sgl_ptr;
223 if (skb->protocol == htons(ETH_P_IP))
225 else if (skb->protocol == htons(ETH_P_IPV6))
228 if (skb_is_gso(skb)) {
229 pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4;
230 pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6;
232 pkg.tx_oob.s_oob.comp_iphdr_csum = 1;
233 pkg.tx_oob.s_oob.comp_tcp_csum = 1;
234 pkg.tx_oob.s_oob.trans_off = skb_transport_offset(skb);
236 pkg.wqe_req.client_data_unit = skb_shinfo(skb)->gso_size;
237 pkg.wqe_req.flags = GDMA_WR_OOB_IN_SGL | GDMA_WR_PAD_BY_SGE0;
239 ip_hdr(skb)->tot_len = 0;
240 ip_hdr(skb)->check = 0;
241 tcp_hdr(skb)->check =
242 ~csum_tcpudp_magic(ip_hdr(skb)->saddr,
243 ip_hdr(skb)->daddr, 0,
246 ipv6_hdr(skb)->payload_len = 0;
247 tcp_hdr(skb)->check =
248 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
249 &ipv6_hdr(skb)->daddr, 0,
253 if (skb->encapsulation) {
254 ihs = skb_inner_tcp_all_headers(skb);
255 u64_stats_update_begin(&tx_stats->syncp);
256 tx_stats->tso_inner_packets++;
257 tx_stats->tso_inner_bytes += skb->len - ihs;
258 u64_stats_update_end(&tx_stats->syncp);
260 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
261 ihs = skb_transport_offset(skb) + sizeof(struct udphdr);
263 ihs = skb_tcp_all_headers(skb);
264 if (ipv6_has_hopopt_jumbo(skb))
265 ihs -= sizeof(struct hop_jumbo_hdr);
268 u64_stats_update_begin(&tx_stats->syncp);
269 tx_stats->tso_packets++;
270 tx_stats->tso_bytes += skb->len - ihs;
271 u64_stats_update_end(&tx_stats->syncp);
274 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
275 csum_type = mana_checksum_info(skb);
277 u64_stats_update_begin(&tx_stats->syncp);
278 tx_stats->csum_partial++;
279 u64_stats_update_end(&tx_stats->syncp);
281 if (csum_type == IPPROTO_TCP) {
282 pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4;
283 pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6;
285 pkg.tx_oob.s_oob.comp_tcp_csum = 1;
286 pkg.tx_oob.s_oob.trans_off = skb_transport_offset(skb);
288 } else if (csum_type == IPPROTO_UDP) {
289 pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4;
290 pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6;
292 pkg.tx_oob.s_oob.comp_udp_csum = 1;
294 /* Can't do offload of this type of checksum */
295 if (skb_checksum_help(skb))
300 if (mana_map_skb(skb, apc, &pkg)) {
301 u64_stats_update_begin(&tx_stats->syncp);
302 tx_stats->mana_map_err++;
303 u64_stats_update_end(&tx_stats->syncp);
307 skb_queue_tail(&txq->pending_skbs, skb);
310 net_txq = netdev_get_tx_queue(ndev, txq_idx);
312 err = mana_gd_post_work_request(gdma_sq, &pkg.wqe_req,
313 (struct gdma_posted_wqe_info *)skb->cb);
314 if (!mana_can_tx(gdma_sq)) {
315 netif_tx_stop_queue(net_txq);
316 apc->eth_stats.stop_queue++;
320 (void)skb_dequeue_tail(&txq->pending_skbs);
321 netdev_warn(ndev, "Failed to post TX OOB: %d\n", err);
322 err = NETDEV_TX_BUSY;
327 atomic_inc(&txq->pending_sends);
329 mana_gd_wq_ring_doorbell(gd->gdma_context, gdma_sq);
331 /* skb may be freed after mana_gd_post_work_request. Do not use it. */
334 tx_stats = &txq->stats;
335 u64_stats_update_begin(&tx_stats->syncp);
337 tx_stats->bytes += len;
338 u64_stats_update_end(&tx_stats->syncp);
341 if (netif_tx_queue_stopped(net_txq) && mana_can_tx(gdma_sq)) {
342 netif_tx_wake_queue(net_txq);
343 apc->eth_stats.wake_queue++;
352 ndev->stats.tx_dropped++;
354 dev_kfree_skb_any(skb);
358 static void mana_get_stats64(struct net_device *ndev,
359 struct rtnl_link_stats64 *st)
361 struct mana_port_context *apc = netdev_priv(ndev);
362 unsigned int num_queues = apc->num_queues;
363 struct mana_stats_rx *rx_stats;
364 struct mana_stats_tx *tx_stats;
369 if (!apc->port_is_up)
372 netdev_stats_to_stats64(st, &ndev->stats);
374 for (q = 0; q < num_queues; q++) {
375 rx_stats = &apc->rxqs[q]->stats;
378 start = u64_stats_fetch_begin(&rx_stats->syncp);
379 packets = rx_stats->packets;
380 bytes = rx_stats->bytes;
381 } while (u64_stats_fetch_retry(&rx_stats->syncp, start));
383 st->rx_packets += packets;
384 st->rx_bytes += bytes;
387 for (q = 0; q < num_queues; q++) {
388 tx_stats = &apc->tx_qp[q].txq.stats;
391 start = u64_stats_fetch_begin(&tx_stats->syncp);
392 packets = tx_stats->packets;
393 bytes = tx_stats->bytes;
394 } while (u64_stats_fetch_retry(&tx_stats->syncp, start));
396 st->tx_packets += packets;
397 st->tx_bytes += bytes;
401 static int mana_get_tx_queue(struct net_device *ndev, struct sk_buff *skb,
404 struct mana_port_context *apc = netdev_priv(ndev);
405 u32 hash = skb_get_hash(skb);
406 struct sock *sk = skb->sk;
409 txq = apc->indir_table[hash & MANA_INDIRECT_TABLE_MASK];
411 if (txq != old_q && sk && sk_fullsock(sk) &&
412 rcu_access_pointer(sk->sk_dst_cache))
413 sk_tx_queue_set(sk, txq);
418 static u16 mana_select_queue(struct net_device *ndev, struct sk_buff *skb,
419 struct net_device *sb_dev)
423 if (ndev->real_num_tx_queues == 1)
426 txq = sk_tx_queue_get(skb->sk);
428 if (txq < 0 || skb->ooo_okay || txq >= ndev->real_num_tx_queues) {
429 if (skb_rx_queue_recorded(skb))
430 txq = skb_get_rx_queue(skb);
432 txq = mana_get_tx_queue(ndev, skb, txq);
438 /* Release pre-allocated RX buffers */
439 static void mana_pre_dealloc_rxbufs(struct mana_port_context *mpc)
444 dev = mpc->ac->gdma_dev->gdma_context->dev;
446 if (!mpc->rxbufs_pre)
452 while (mpc->rxbpre_total) {
453 i = --mpc->rxbpre_total;
454 dma_unmap_single(dev, mpc->das_pre[i], mpc->rxbpre_datasize,
456 put_page(virt_to_head_page(mpc->rxbufs_pre[i]));
463 kfree(mpc->rxbufs_pre);
464 mpc->rxbufs_pre = NULL;
467 mpc->rxbpre_datasize = 0;
468 mpc->rxbpre_alloc_size = 0;
469 mpc->rxbpre_headroom = 0;
472 /* Get a buffer from the pre-allocated RX buffers */
473 static void *mana_get_rxbuf_pre(struct mana_rxq *rxq, dma_addr_t *da)
475 struct net_device *ndev = rxq->ndev;
476 struct mana_port_context *mpc;
479 mpc = netdev_priv(ndev);
481 if (!mpc->rxbufs_pre || !mpc->das_pre || !mpc->rxbpre_total) {
482 netdev_err(ndev, "No RX pre-allocated bufs\n");
486 /* Check sizes to catch unexpected coding error */
487 if (mpc->rxbpre_datasize != rxq->datasize) {
488 netdev_err(ndev, "rxbpre_datasize mismatch: %u: %u\n",
489 mpc->rxbpre_datasize, rxq->datasize);
493 if (mpc->rxbpre_alloc_size != rxq->alloc_size) {
494 netdev_err(ndev, "rxbpre_alloc_size mismatch: %u: %u\n",
495 mpc->rxbpre_alloc_size, rxq->alloc_size);
499 if (mpc->rxbpre_headroom != rxq->headroom) {
500 netdev_err(ndev, "rxbpre_headroom mismatch: %u: %u\n",
501 mpc->rxbpre_headroom, rxq->headroom);
507 *da = mpc->das_pre[mpc->rxbpre_total];
508 va = mpc->rxbufs_pre[mpc->rxbpre_total];
509 mpc->rxbufs_pre[mpc->rxbpre_total] = NULL;
511 /* Deallocate the array after all buffers are gone */
512 if (!mpc->rxbpre_total)
513 mana_pre_dealloc_rxbufs(mpc);
518 /* Get RX buffer's data size, alloc size, XDP headroom based on MTU */
519 static void mana_get_rxbuf_cfg(int mtu, u32 *datasize, u32 *alloc_size,
522 if (mtu > MANA_XDP_MTU_MAX)
523 *headroom = 0; /* no support for XDP */
525 *headroom = XDP_PACKET_HEADROOM;
527 *alloc_size = mtu + MANA_RXBUF_PAD + *headroom;
529 *datasize = ALIGN(mtu + ETH_HLEN, MANA_RX_DATA_ALIGN);
532 static int mana_pre_alloc_rxbufs(struct mana_port_context *mpc, int new_mtu)
541 mana_get_rxbuf_cfg(new_mtu, &mpc->rxbpre_datasize,
542 &mpc->rxbpre_alloc_size, &mpc->rxbpre_headroom);
544 dev = mpc->ac->gdma_dev->gdma_context->dev;
546 num_rxb = mpc->num_queues * RX_BUFFERS_PER_QUEUE;
548 WARN(mpc->rxbufs_pre, "mana rxbufs_pre exists\n");
549 mpc->rxbufs_pre = kmalloc_array(num_rxb, sizeof(void *), GFP_KERNEL);
550 if (!mpc->rxbufs_pre)
553 mpc->das_pre = kmalloc_array(num_rxb, sizeof(dma_addr_t), GFP_KERNEL);
557 mpc->rxbpre_total = 0;
559 for (i = 0; i < num_rxb; i++) {
560 if (mpc->rxbpre_alloc_size > PAGE_SIZE) {
561 va = netdev_alloc_frag(mpc->rxbpre_alloc_size);
565 page = virt_to_head_page(va);
566 /* Check if the frag falls back to single page */
567 if (compound_order(page) <
568 get_order(mpc->rxbpre_alloc_size)) {
573 page = dev_alloc_page();
577 va = page_to_virt(page);
580 da = dma_map_single(dev, va + mpc->rxbpre_headroom,
581 mpc->rxbpre_datasize, DMA_FROM_DEVICE);
582 if (dma_mapping_error(dev, da)) {
583 put_page(virt_to_head_page(va));
587 mpc->rxbufs_pre[i] = va;
588 mpc->das_pre[i] = da;
589 mpc->rxbpre_total = i + 1;
595 mana_pre_dealloc_rxbufs(mpc);
599 static int mana_change_mtu(struct net_device *ndev, int new_mtu)
601 struct mana_port_context *mpc = netdev_priv(ndev);
602 unsigned int old_mtu = ndev->mtu;
605 /* Pre-allocate buffers to prevent failure in mana_attach later */
606 err = mana_pre_alloc_rxbufs(mpc, new_mtu);
608 netdev_err(ndev, "Insufficient memory for new MTU\n");
612 err = mana_detach(ndev, false);
614 netdev_err(ndev, "mana_detach failed: %d\n", err);
620 err = mana_attach(ndev);
622 netdev_err(ndev, "mana_attach failed: %d\n", err);
627 mana_pre_dealloc_rxbufs(mpc);
631 static const struct net_device_ops mana_devops = {
632 .ndo_open = mana_open,
633 .ndo_stop = mana_close,
634 .ndo_select_queue = mana_select_queue,
635 .ndo_start_xmit = mana_start_xmit,
636 .ndo_validate_addr = eth_validate_addr,
637 .ndo_get_stats64 = mana_get_stats64,
639 .ndo_xdp_xmit = mana_xdp_xmit,
640 .ndo_change_mtu = mana_change_mtu,
643 static void mana_cleanup_port_context(struct mana_port_context *apc)
649 static int mana_init_port_context(struct mana_port_context *apc)
651 apc->rxqs = kcalloc(apc->num_queues, sizeof(struct mana_rxq *),
654 return !apc->rxqs ? -ENOMEM : 0;
657 static int mana_send_request(struct mana_context *ac, void *in_buf,
658 u32 in_len, void *out_buf, u32 out_len)
660 struct gdma_context *gc = ac->gdma_dev->gdma_context;
661 struct gdma_resp_hdr *resp = out_buf;
662 struct gdma_req_hdr *req = in_buf;
663 struct device *dev = gc->dev;
664 static atomic_t activity_id;
667 req->dev_id = gc->mana.dev_id;
668 req->activity_id = atomic_inc_return(&activity_id);
670 err = mana_gd_send_request(gc, in_len, in_buf, out_len,
672 if (err || resp->status) {
673 dev_err(dev, "Failed to send mana message: %d, 0x%x\n",
675 return err ? err : -EPROTO;
678 if (req->dev_id.as_uint32 != resp->dev_id.as_uint32 ||
679 req->activity_id != resp->activity_id) {
680 dev_err(dev, "Unexpected mana message response: %x,%x,%x,%x\n",
681 req->dev_id.as_uint32, resp->dev_id.as_uint32,
682 req->activity_id, resp->activity_id);
689 static int mana_verify_resp_hdr(const struct gdma_resp_hdr *resp_hdr,
690 const enum mana_command_code expected_code,
693 if (resp_hdr->response.msg_type != expected_code)
696 if (resp_hdr->response.msg_version < GDMA_MESSAGE_V1)
699 if (resp_hdr->response.msg_size < min_size)
705 static int mana_pf_register_hw_vport(struct mana_port_context *apc)
707 struct mana_register_hw_vport_resp resp = {};
708 struct mana_register_hw_vport_req req = {};
711 mana_gd_init_req_hdr(&req.hdr, MANA_REGISTER_HW_PORT,
712 sizeof(req), sizeof(resp));
713 req.attached_gfid = 1;
714 req.is_pf_default_vport = 1;
715 req.allow_all_ether_types = 1;
717 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
720 netdev_err(apc->ndev, "Failed to register hw vPort: %d\n", err);
724 err = mana_verify_resp_hdr(&resp.hdr, MANA_REGISTER_HW_PORT,
726 if (err || resp.hdr.status) {
727 netdev_err(apc->ndev, "Failed to register hw vPort: %d, 0x%x\n",
728 err, resp.hdr.status);
729 return err ? err : -EPROTO;
732 apc->port_handle = resp.hw_vport_handle;
736 static void mana_pf_deregister_hw_vport(struct mana_port_context *apc)
738 struct mana_deregister_hw_vport_resp resp = {};
739 struct mana_deregister_hw_vport_req req = {};
742 mana_gd_init_req_hdr(&req.hdr, MANA_DEREGISTER_HW_PORT,
743 sizeof(req), sizeof(resp));
744 req.hw_vport_handle = apc->port_handle;
746 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
749 netdev_err(apc->ndev, "Failed to unregister hw vPort: %d\n",
754 err = mana_verify_resp_hdr(&resp.hdr, MANA_DEREGISTER_HW_PORT,
756 if (err || resp.hdr.status)
757 netdev_err(apc->ndev,
758 "Failed to deregister hw vPort: %d, 0x%x\n",
759 err, resp.hdr.status);
762 static int mana_pf_register_filter(struct mana_port_context *apc)
764 struct mana_register_filter_resp resp = {};
765 struct mana_register_filter_req req = {};
768 mana_gd_init_req_hdr(&req.hdr, MANA_REGISTER_FILTER,
769 sizeof(req), sizeof(resp));
770 req.vport = apc->port_handle;
771 memcpy(req.mac_addr, apc->mac_addr, ETH_ALEN);
773 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
776 netdev_err(apc->ndev, "Failed to register filter: %d\n", err);
780 err = mana_verify_resp_hdr(&resp.hdr, MANA_REGISTER_FILTER,
782 if (err || resp.hdr.status) {
783 netdev_err(apc->ndev, "Failed to register filter: %d, 0x%x\n",
784 err, resp.hdr.status);
785 return err ? err : -EPROTO;
788 apc->pf_filter_handle = resp.filter_handle;
792 static void mana_pf_deregister_filter(struct mana_port_context *apc)
794 struct mana_deregister_filter_resp resp = {};
795 struct mana_deregister_filter_req req = {};
798 mana_gd_init_req_hdr(&req.hdr, MANA_DEREGISTER_FILTER,
799 sizeof(req), sizeof(resp));
800 req.filter_handle = apc->pf_filter_handle;
802 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
805 netdev_err(apc->ndev, "Failed to unregister filter: %d\n",
810 err = mana_verify_resp_hdr(&resp.hdr, MANA_DEREGISTER_FILTER,
812 if (err || resp.hdr.status)
813 netdev_err(apc->ndev,
814 "Failed to deregister filter: %d, 0x%x\n",
815 err, resp.hdr.status);
818 static int mana_query_device_cfg(struct mana_context *ac, u32 proto_major_ver,
819 u32 proto_minor_ver, u32 proto_micro_ver,
822 struct gdma_context *gc = ac->gdma_dev->gdma_context;
823 struct mana_query_device_cfg_resp resp = {};
824 struct mana_query_device_cfg_req req = {};
825 struct device *dev = gc->dev;
828 mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_DEV_CONFIG,
829 sizeof(req), sizeof(resp));
831 req.hdr.resp.msg_version = GDMA_MESSAGE_V2;
833 req.proto_major_ver = proto_major_ver;
834 req.proto_minor_ver = proto_minor_ver;
835 req.proto_micro_ver = proto_micro_ver;
837 err = mana_send_request(ac, &req, sizeof(req), &resp, sizeof(resp));
839 dev_err(dev, "Failed to query config: %d", err);
843 err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_DEV_CONFIG,
845 if (err || resp.hdr.status) {
846 dev_err(dev, "Invalid query result: %d, 0x%x\n", err,
853 *max_num_vports = resp.max_num_vports;
855 if (resp.hdr.response.msg_version == GDMA_MESSAGE_V2)
856 gc->adapter_mtu = resp.adapter_mtu;
858 gc->adapter_mtu = ETH_FRAME_LEN;
863 static int mana_query_vport_cfg(struct mana_port_context *apc, u32 vport_index,
864 u32 *max_sq, u32 *max_rq, u32 *num_indir_entry)
866 struct mana_query_vport_cfg_resp resp = {};
867 struct mana_query_vport_cfg_req req = {};
870 mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_VPORT_CONFIG,
871 sizeof(req), sizeof(resp));
873 req.vport_index = vport_index;
875 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
880 err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_VPORT_CONFIG,
888 *max_sq = resp.max_num_sq;
889 *max_rq = resp.max_num_rq;
890 *num_indir_entry = resp.num_indirection_ent;
892 apc->port_handle = resp.vport;
893 ether_addr_copy(apc->mac_addr, resp.mac_addr);
898 void mana_uncfg_vport(struct mana_port_context *apc)
900 mutex_lock(&apc->vport_mutex);
901 apc->vport_use_count--;
902 WARN_ON(apc->vport_use_count < 0);
903 mutex_unlock(&apc->vport_mutex);
905 EXPORT_SYMBOL_NS(mana_uncfg_vport, NET_MANA);
907 int mana_cfg_vport(struct mana_port_context *apc, u32 protection_dom_id,
910 struct mana_config_vport_resp resp = {};
911 struct mana_config_vport_req req = {};
914 /* This function is used to program the Ethernet port in the hardware
915 * table. It can be called from the Ethernet driver or the RDMA driver.
917 * For Ethernet usage, the hardware supports only one active user on a
918 * physical port. The driver checks on the port usage before programming
919 * the hardware when creating the RAW QP (RDMA driver) or exposing the
920 * device to kernel NET layer (Ethernet driver).
922 * Because the RDMA driver doesn't know in advance which QP type the
923 * user will create, it exposes the device with all its ports. The user
924 * may not be able to create RAW QP on a port if this port is already
925 * in used by the Ethernet driver from the kernel.
927 * This physical port limitation only applies to the RAW QP. For RC QP,
928 * the hardware doesn't have this limitation. The user can create RC
929 * QPs on a physical port up to the hardware limits independent of the
930 * Ethernet usage on the same port.
932 mutex_lock(&apc->vport_mutex);
933 if (apc->vport_use_count > 0) {
934 mutex_unlock(&apc->vport_mutex);
937 apc->vport_use_count++;
938 mutex_unlock(&apc->vport_mutex);
940 mana_gd_init_req_hdr(&req.hdr, MANA_CONFIG_VPORT_TX,
941 sizeof(req), sizeof(resp));
942 req.vport = apc->port_handle;
943 req.pdid = protection_dom_id;
944 req.doorbell_pageid = doorbell_pg_id;
946 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
949 netdev_err(apc->ndev, "Failed to configure vPort: %d\n", err);
953 err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_TX,
955 if (err || resp.hdr.status) {
956 netdev_err(apc->ndev, "Failed to configure vPort: %d, 0x%x\n",
957 err, resp.hdr.status);
964 apc->tx_shortform_allowed = resp.short_form_allowed;
965 apc->tx_vp_offset = resp.tx_vport_offset;
967 netdev_info(apc->ndev, "Configured vPort %llu PD %u DB %u\n",
968 apc->port_handle, protection_dom_id, doorbell_pg_id);
971 mana_uncfg_vport(apc);
975 EXPORT_SYMBOL_NS(mana_cfg_vport, NET_MANA);
977 static int mana_cfg_vport_steering(struct mana_port_context *apc,
979 bool update_default_rxobj, bool update_key,
982 u16 num_entries = MANA_INDIRECT_TABLE_SIZE;
983 struct mana_cfg_rx_steer_req_v2 *req;
984 struct mana_cfg_rx_steer_resp resp = {};
985 struct net_device *ndev = apc->ndev;
986 mana_handle_t *req_indir_tab;
990 req_buf_size = sizeof(*req) + sizeof(mana_handle_t) * num_entries;
991 req = kzalloc(req_buf_size, GFP_KERNEL);
995 mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size,
998 req->hdr.req.msg_version = GDMA_MESSAGE_V2;
1000 req->vport = apc->port_handle;
1001 req->num_indir_entries = num_entries;
1002 req->indir_tab_offset = sizeof(*req);
1003 req->rx_enable = rx;
1004 req->rss_enable = apc->rss_state;
1005 req->update_default_rxobj = update_default_rxobj;
1006 req->update_hashkey = update_key;
1007 req->update_indir_tab = update_tab;
1008 req->default_rxobj = apc->default_rxobj;
1009 req->cqe_coalescing_enable = 0;
1012 memcpy(&req->hashkey, apc->hashkey, MANA_HASH_KEY_SIZE);
1015 req_indir_tab = (mana_handle_t *)(req + 1);
1016 memcpy(req_indir_tab, apc->rxobj_table,
1017 req->num_indir_entries * sizeof(mana_handle_t));
1020 err = mana_send_request(apc->ac, req, req_buf_size, &resp,
1023 netdev_err(ndev, "Failed to configure vPort RX: %d\n", err);
1027 err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_RX,
1030 netdev_err(ndev, "vPort RX configuration failed: %d\n", err);
1034 if (resp.hdr.status) {
1035 netdev_err(ndev, "vPort RX configuration failed: 0x%x\n",
1040 netdev_info(ndev, "Configured steering vPort %llu entries %u\n",
1041 apc->port_handle, num_entries);
1047 int mana_create_wq_obj(struct mana_port_context *apc,
1048 mana_handle_t vport,
1049 u32 wq_type, struct mana_obj_spec *wq_spec,
1050 struct mana_obj_spec *cq_spec,
1051 mana_handle_t *wq_obj)
1053 struct mana_create_wqobj_resp resp = {};
1054 struct mana_create_wqobj_req req = {};
1055 struct net_device *ndev = apc->ndev;
1058 mana_gd_init_req_hdr(&req.hdr, MANA_CREATE_WQ_OBJ,
1059 sizeof(req), sizeof(resp));
1061 req.wq_type = wq_type;
1062 req.wq_gdma_region = wq_spec->gdma_region;
1063 req.cq_gdma_region = cq_spec->gdma_region;
1064 req.wq_size = wq_spec->queue_size;
1065 req.cq_size = cq_spec->queue_size;
1066 req.cq_moderation_ctx_id = cq_spec->modr_ctx_id;
1067 req.cq_parent_qid = cq_spec->attached_eq;
1069 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
1072 netdev_err(ndev, "Failed to create WQ object: %d\n", err);
1076 err = mana_verify_resp_hdr(&resp.hdr, MANA_CREATE_WQ_OBJ,
1078 if (err || resp.hdr.status) {
1079 netdev_err(ndev, "Failed to create WQ object: %d, 0x%x\n", err,
1086 if (resp.wq_obj == INVALID_MANA_HANDLE) {
1087 netdev_err(ndev, "Got an invalid WQ object handle\n");
1092 *wq_obj = resp.wq_obj;
1093 wq_spec->queue_index = resp.wq_id;
1094 cq_spec->queue_index = resp.cq_id;
1100 EXPORT_SYMBOL_NS(mana_create_wq_obj, NET_MANA);
1102 void mana_destroy_wq_obj(struct mana_port_context *apc, u32 wq_type,
1103 mana_handle_t wq_obj)
1105 struct mana_destroy_wqobj_resp resp = {};
1106 struct mana_destroy_wqobj_req req = {};
1107 struct net_device *ndev = apc->ndev;
1110 mana_gd_init_req_hdr(&req.hdr, MANA_DESTROY_WQ_OBJ,
1111 sizeof(req), sizeof(resp));
1112 req.wq_type = wq_type;
1113 req.wq_obj_handle = wq_obj;
1115 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
1118 netdev_err(ndev, "Failed to destroy WQ object: %d\n", err);
1122 err = mana_verify_resp_hdr(&resp.hdr, MANA_DESTROY_WQ_OBJ,
1124 if (err || resp.hdr.status)
1125 netdev_err(ndev, "Failed to destroy WQ object: %d, 0x%x\n", err,
1128 EXPORT_SYMBOL_NS(mana_destroy_wq_obj, NET_MANA);
1130 static void mana_destroy_eq(struct mana_context *ac)
1132 struct gdma_context *gc = ac->gdma_dev->gdma_context;
1133 struct gdma_queue *eq;
1139 for (i = 0; i < gc->max_num_queues; i++) {
1144 mana_gd_destroy_queue(gc, eq);
1151 static int mana_create_eq(struct mana_context *ac)
1153 struct gdma_dev *gd = ac->gdma_dev;
1154 struct gdma_context *gc = gd->gdma_context;
1155 struct gdma_queue_spec spec = {};
1159 ac->eqs = kcalloc(gc->max_num_queues, sizeof(struct mana_eq),
1164 spec.type = GDMA_EQ;
1165 spec.monitor_avl_buf = false;
1166 spec.queue_size = EQ_SIZE;
1167 spec.eq.callback = NULL;
1168 spec.eq.context = ac->eqs;
1169 spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE;
1171 for (i = 0; i < gc->max_num_queues; i++) {
1172 err = mana_gd_create_mana_eq(gd, &spec, &ac->eqs[i].eq);
1179 mana_destroy_eq(ac);
1183 static int mana_fence_rq(struct mana_port_context *apc, struct mana_rxq *rxq)
1185 struct mana_fence_rq_resp resp = {};
1186 struct mana_fence_rq_req req = {};
1189 init_completion(&rxq->fence_event);
1191 mana_gd_init_req_hdr(&req.hdr, MANA_FENCE_RQ,
1192 sizeof(req), sizeof(resp));
1193 req.wq_obj_handle = rxq->rxobj;
1195 err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
1198 netdev_err(apc->ndev, "Failed to fence RQ %u: %d\n",
1203 err = mana_verify_resp_hdr(&resp.hdr, MANA_FENCE_RQ, sizeof(resp));
1204 if (err || resp.hdr.status) {
1205 netdev_err(apc->ndev, "Failed to fence RQ %u: %d, 0x%x\n",
1206 rxq->rxq_idx, err, resp.hdr.status);
1213 if (wait_for_completion_timeout(&rxq->fence_event, 10 * HZ) == 0) {
1214 netdev_err(apc->ndev, "Failed to fence RQ %u: timed out\n",
1222 static void mana_fence_rqs(struct mana_port_context *apc)
1224 unsigned int rxq_idx;
1225 struct mana_rxq *rxq;
1228 for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) {
1229 rxq = apc->rxqs[rxq_idx];
1230 err = mana_fence_rq(apc, rxq);
1232 /* In case of any error, use sleep instead. */
1238 static int mana_move_wq_tail(struct gdma_queue *wq, u32 num_units)
1243 used_space_old = wq->head - wq->tail;
1244 used_space_new = wq->head - (wq->tail + num_units);
1246 if (WARN_ON_ONCE(used_space_new > used_space_old))
1249 wq->tail += num_units;
1253 static void mana_unmap_skb(struct sk_buff *skb, struct mana_port_context *apc)
1255 struct mana_skb_head *ash = (struct mana_skb_head *)skb->head;
1256 struct gdma_context *gc = apc->ac->gdma_dev->gdma_context;
1257 struct device *dev = gc->dev;
1260 dma_unmap_single(dev, ash->dma_handle[0], ash->size[0], DMA_TO_DEVICE);
1262 for (i = 1; i < skb_shinfo(skb)->nr_frags + 1; i++)
1263 dma_unmap_page(dev, ash->dma_handle[i], ash->size[i],
1267 static void mana_poll_tx_cq(struct mana_cq *cq)
1269 struct gdma_comp *completions = cq->gdma_comp_buf;
1270 struct gdma_posted_wqe_info *wqe_info;
1271 unsigned int pkt_transmitted = 0;
1272 unsigned int wqe_unit_cnt = 0;
1273 struct mana_txq *txq = cq->txq;
1274 struct mana_port_context *apc;
1275 struct netdev_queue *net_txq;
1276 struct gdma_queue *gdma_wq;
1277 unsigned int avail_space;
1278 struct net_device *ndev;
1279 struct sk_buff *skb;
1285 apc = netdev_priv(ndev);
1287 comp_read = mana_gd_poll_cq(cq->gdma_cq, completions,
1288 CQE_POLLING_BUFFER);
1293 for (i = 0; i < comp_read; i++) {
1294 struct mana_tx_comp_oob *cqe_oob;
1296 if (WARN_ON_ONCE(!completions[i].is_sq))
1299 cqe_oob = (struct mana_tx_comp_oob *)completions[i].cqe_data;
1300 if (WARN_ON_ONCE(cqe_oob->cqe_hdr.client_type !=
1301 MANA_CQE_COMPLETION))
1304 switch (cqe_oob->cqe_hdr.cqe_type) {
1308 case CQE_TX_SA_DROP:
1309 case CQE_TX_MTU_DROP:
1310 case CQE_TX_INVALID_OOB:
1311 case CQE_TX_INVALID_ETH_TYPE:
1312 case CQE_TX_HDR_PROCESSING_ERROR:
1313 case CQE_TX_VF_DISABLED:
1314 case CQE_TX_VPORT_IDX_OUT_OF_RANGE:
1315 case CQE_TX_VPORT_DISABLED:
1316 case CQE_TX_VLAN_TAGGING_VIOLATION:
1317 WARN_ONCE(1, "TX: CQE error %d: ignored.\n",
1318 cqe_oob->cqe_hdr.cqe_type);
1319 apc->eth_stats.tx_cqe_err++;
1323 /* If the CQE type is unexpected, log an error, assert,
1324 * and go through the error path.
1326 WARN_ONCE(1, "TX: Unexpected CQE type %d: HW BUG?\n",
1327 cqe_oob->cqe_hdr.cqe_type);
1328 apc->eth_stats.tx_cqe_unknown_type++;
1332 if (WARN_ON_ONCE(txq->gdma_txq_id != completions[i].wq_num))
1335 skb = skb_dequeue(&txq->pending_skbs);
1336 if (WARN_ON_ONCE(!skb))
1339 wqe_info = (struct gdma_posted_wqe_info *)skb->cb;
1340 wqe_unit_cnt += wqe_info->wqe_size_in_bu;
1342 mana_unmap_skb(skb, apc);
1344 napi_consume_skb(skb, cq->budget);
1349 if (WARN_ON_ONCE(wqe_unit_cnt == 0))
1352 mana_move_wq_tail(txq->gdma_sq, wqe_unit_cnt);
1354 gdma_wq = txq->gdma_sq;
1355 avail_space = mana_gd_wq_avail_space(gdma_wq);
1357 /* Ensure tail updated before checking q stop */
1360 net_txq = txq->net_txq;
1361 txq_stopped = netif_tx_queue_stopped(net_txq);
1363 /* Ensure checking txq_stopped before apc->port_is_up. */
1366 if (txq_stopped && apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) {
1367 netif_tx_wake_queue(net_txq);
1368 apc->eth_stats.wake_queue++;
1371 if (atomic_sub_return(pkt_transmitted, &txq->pending_sends) < 0)
1374 cq->work_done = pkt_transmitted;
1377 static void mana_post_pkt_rxq(struct mana_rxq *rxq)
1379 struct mana_recv_buf_oob *recv_buf_oob;
1383 curr_index = rxq->buf_index++;
1384 if (rxq->buf_index == rxq->num_rx_buf)
1387 recv_buf_oob = &rxq->rx_oobs[curr_index];
1389 err = mana_gd_post_and_ring(rxq->gdma_rq, &recv_buf_oob->wqe_req,
1390 &recv_buf_oob->wqe_inf);
1391 if (WARN_ON_ONCE(err))
1394 WARN_ON_ONCE(recv_buf_oob->wqe_inf.wqe_size_in_bu != 1);
1397 static struct sk_buff *mana_build_skb(struct mana_rxq *rxq, void *buf_va,
1398 uint pkt_len, struct xdp_buff *xdp)
1400 struct sk_buff *skb = napi_build_skb(buf_va, rxq->alloc_size);
1405 if (xdp->data_hard_start) {
1406 skb_reserve(skb, xdp->data - xdp->data_hard_start);
1407 skb_put(skb, xdp->data_end - xdp->data);
1411 skb_reserve(skb, rxq->headroom);
1412 skb_put(skb, pkt_len);
1417 static void mana_rx_skb(void *buf_va, struct mana_rxcomp_oob *cqe,
1418 struct mana_rxq *rxq)
1420 struct mana_stats_rx *rx_stats = &rxq->stats;
1421 struct net_device *ndev = rxq->ndev;
1422 uint pkt_len = cqe->ppi[0].pkt_len;
1423 u16 rxq_idx = rxq->rxq_idx;
1424 struct napi_struct *napi;
1425 struct xdp_buff xdp = {};
1426 struct sk_buff *skb;
1430 rxq->rx_cq.work_done++;
1431 napi = &rxq->rx_cq.napi;
1434 ++ndev->stats.rx_dropped;
1438 act = mana_run_xdp(ndev, rxq, &xdp, buf_va, pkt_len);
1440 if (act == XDP_REDIRECT && !rxq->xdp_rc)
1443 if (act != XDP_PASS && act != XDP_TX)
1446 skb = mana_build_skb(rxq, buf_va, pkt_len, &xdp);
1451 skb->dev = napi->dev;
1453 skb->protocol = eth_type_trans(skb, ndev);
1454 skb_checksum_none_assert(skb);
1455 skb_record_rx_queue(skb, rxq_idx);
1457 if ((ndev->features & NETIF_F_RXCSUM) && cqe->rx_iphdr_csum_succeed) {
1458 if (cqe->rx_tcp_csum_succeed || cqe->rx_udp_csum_succeed)
1459 skb->ip_summed = CHECKSUM_UNNECESSARY;
1462 if (cqe->rx_hashtype != 0 && (ndev->features & NETIF_F_RXHASH)) {
1463 hash_value = cqe->ppi[0].pkt_hash;
1465 if (cqe->rx_hashtype & MANA_HASH_L4)
1466 skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L4);
1468 skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L3);
1471 if (cqe->rx_vlantag_present) {
1472 u16 vlan_tci = cqe->rx_vlan_id;
1474 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci);
1477 u64_stats_update_begin(&rx_stats->syncp);
1478 rx_stats->packets++;
1479 rx_stats->bytes += pkt_len;
1483 u64_stats_update_end(&rx_stats->syncp);
1485 if (act == XDP_TX) {
1486 skb_set_queue_mapping(skb, rxq_idx);
1487 mana_xdp_tx(skb, ndev);
1491 napi_gro_receive(napi, skb);
1496 u64_stats_update_begin(&rx_stats->syncp);
1497 rx_stats->xdp_drop++;
1498 u64_stats_update_end(&rx_stats->syncp);
1501 WARN_ON_ONCE(rxq->xdp_save_va);
1502 /* Save for reuse */
1503 rxq->xdp_save_va = buf_va;
1505 ++ndev->stats.rx_dropped;
1510 static void *mana_get_rxfrag(struct mana_rxq *rxq, struct device *dev,
1511 dma_addr_t *da, bool is_napi)
1516 /* Reuse XDP dropped page if available */
1517 if (rxq->xdp_save_va) {
1518 va = rxq->xdp_save_va;
1519 rxq->xdp_save_va = NULL;
1520 } else if (rxq->alloc_size > PAGE_SIZE) {
1522 va = napi_alloc_frag(rxq->alloc_size);
1524 va = netdev_alloc_frag(rxq->alloc_size);
1529 page = virt_to_head_page(va);
1530 /* Check if the frag falls back to single page */
1531 if (compound_order(page) < get_order(rxq->alloc_size)) {
1536 page = dev_alloc_page();
1540 va = page_to_virt(page);
1543 *da = dma_map_single(dev, va + rxq->headroom, rxq->datasize,
1545 if (dma_mapping_error(dev, *da)) {
1546 put_page(virt_to_head_page(va));
1553 /* Allocate frag for rx buffer, and save the old buf */
1554 static void mana_refill_rx_oob(struct device *dev, struct mana_rxq *rxq,
1555 struct mana_recv_buf_oob *rxoob, void **old_buf)
1560 va = mana_get_rxfrag(rxq, dev, &da, true);
1564 dma_unmap_single(dev, rxoob->sgl[0].address, rxq->datasize,
1566 *old_buf = rxoob->buf_va;
1569 rxoob->sgl[0].address = da;
1572 static void mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq,
1573 struct gdma_comp *cqe)
1575 struct mana_rxcomp_oob *oob = (struct mana_rxcomp_oob *)cqe->cqe_data;
1576 struct gdma_context *gc = rxq->gdma_rq->gdma_dev->gdma_context;
1577 struct net_device *ndev = rxq->ndev;
1578 struct mana_recv_buf_oob *rxbuf_oob;
1579 struct mana_port_context *apc;
1580 struct device *dev = gc->dev;
1581 void *old_buf = NULL;
1584 apc = netdev_priv(ndev);
1586 switch (oob->cqe_hdr.cqe_type) {
1590 case CQE_RX_TRUNCATED:
1591 ++ndev->stats.rx_dropped;
1592 rxbuf_oob = &rxq->rx_oobs[rxq->buf_index];
1593 netdev_warn_once(ndev, "Dropped a truncated packet\n");
1596 case CQE_RX_COALESCED_4:
1597 netdev_err(ndev, "RX coalescing is unsupported\n");
1598 apc->eth_stats.rx_coalesced_err++;
1601 case CQE_RX_OBJECT_FENCE:
1602 complete(&rxq->fence_event);
1606 netdev_err(ndev, "Unknown RX CQE type = %d\n",
1607 oob->cqe_hdr.cqe_type);
1608 apc->eth_stats.rx_cqe_unknown_type++;
1612 pktlen = oob->ppi[0].pkt_len;
1615 /* data packets should never have packetlength of zero */
1616 netdev_err(ndev, "RX pkt len=0, rq=%u, cq=%u, rxobj=0x%llx\n",
1617 rxq->gdma_id, cq->gdma_id, rxq->rxobj);
1621 curr = rxq->buf_index;
1622 rxbuf_oob = &rxq->rx_oobs[curr];
1623 WARN_ON_ONCE(rxbuf_oob->wqe_inf.wqe_size_in_bu != 1);
1625 mana_refill_rx_oob(dev, rxq, rxbuf_oob, &old_buf);
1627 /* Unsuccessful refill will have old_buf == NULL.
1628 * In this case, mana_rx_skb() will drop the packet.
1630 mana_rx_skb(old_buf, oob, rxq);
1633 mana_move_wq_tail(rxq->gdma_rq, rxbuf_oob->wqe_inf.wqe_size_in_bu);
1635 mana_post_pkt_rxq(rxq);
1638 static void mana_poll_rx_cq(struct mana_cq *cq)
1640 struct gdma_comp *comp = cq->gdma_comp_buf;
1641 struct mana_rxq *rxq = cq->rxq;
1644 comp_read = mana_gd_poll_cq(cq->gdma_cq, comp, CQE_POLLING_BUFFER);
1645 WARN_ON_ONCE(comp_read > CQE_POLLING_BUFFER);
1647 rxq->xdp_flush = false;
1649 for (i = 0; i < comp_read; i++) {
1650 if (WARN_ON_ONCE(comp[i].is_sq))
1653 /* verify recv cqe references the right rxq */
1654 if (WARN_ON_ONCE(comp[i].wq_num != cq->rxq->gdma_id))
1657 mana_process_rx_cqe(rxq, cq, &comp[i]);
1664 static int mana_cq_handler(void *context, struct gdma_queue *gdma_queue)
1666 struct mana_cq *cq = context;
1670 WARN_ON_ONCE(cq->gdma_cq != gdma_queue);
1672 if (cq->type == MANA_CQ_TYPE_RX)
1673 mana_poll_rx_cq(cq);
1675 mana_poll_tx_cq(cq);
1679 if (w < cq->budget &&
1680 napi_complete_done(&cq->napi, w)) {
1681 arm_bit = SET_ARM_BIT;
1686 mana_gd_ring_cq(gdma_queue, arm_bit);
1691 static int mana_poll(struct napi_struct *napi, int budget)
1693 struct mana_cq *cq = container_of(napi, struct mana_cq, napi);
1697 cq->budget = budget;
1699 w = mana_cq_handler(cq, cq->gdma_cq);
1701 return min(w, budget);
1704 static void mana_schedule_napi(void *context, struct gdma_queue *gdma_queue)
1706 struct mana_cq *cq = context;
1708 napi_schedule_irqoff(&cq->napi);
1711 static void mana_deinit_cq(struct mana_port_context *apc, struct mana_cq *cq)
1713 struct gdma_dev *gd = apc->ac->gdma_dev;
1718 mana_gd_destroy_queue(gd->gdma_context, cq->gdma_cq);
1721 static void mana_deinit_txq(struct mana_port_context *apc, struct mana_txq *txq)
1723 struct gdma_dev *gd = apc->ac->gdma_dev;
1728 mana_gd_destroy_queue(gd->gdma_context, txq->gdma_sq);
1731 static void mana_destroy_txq(struct mana_port_context *apc)
1733 struct napi_struct *napi;
1739 for (i = 0; i < apc->num_queues; i++) {
1740 napi = &apc->tx_qp[i].tx_cq.napi;
1741 napi_synchronize(napi);
1743 netif_napi_del(napi);
1745 mana_destroy_wq_obj(apc, GDMA_SQ, apc->tx_qp[i].tx_object);
1747 mana_deinit_cq(apc, &apc->tx_qp[i].tx_cq);
1749 mana_deinit_txq(apc, &apc->tx_qp[i].txq);
1756 static int mana_create_txq(struct mana_port_context *apc,
1757 struct net_device *net)
1759 struct mana_context *ac = apc->ac;
1760 struct gdma_dev *gd = ac->gdma_dev;
1761 struct mana_obj_spec wq_spec;
1762 struct mana_obj_spec cq_spec;
1763 struct gdma_queue_spec spec;
1764 struct gdma_context *gc;
1765 struct mana_txq *txq;
1772 apc->tx_qp = kcalloc(apc->num_queues, sizeof(struct mana_tx_qp),
1777 /* The minimum size of the WQE is 32 bytes, hence
1778 * MAX_SEND_BUFFERS_PER_QUEUE represents the maximum number of WQEs
1779 * the SQ can store. This value is then used to size other queues
1780 * to prevent overflow.
1782 txq_size = MAX_SEND_BUFFERS_PER_QUEUE * 32;
1783 BUILD_BUG_ON(!PAGE_ALIGNED(txq_size));
1785 cq_size = MAX_SEND_BUFFERS_PER_QUEUE * COMP_ENTRY_SIZE;
1786 cq_size = PAGE_ALIGN(cq_size);
1788 gc = gd->gdma_context;
1790 for (i = 0; i < apc->num_queues; i++) {
1791 apc->tx_qp[i].tx_object = INVALID_MANA_HANDLE;
1794 txq = &apc->tx_qp[i].txq;
1796 u64_stats_init(&txq->stats.syncp);
1798 txq->net_txq = netdev_get_tx_queue(net, i);
1799 txq->vp_offset = apc->tx_vp_offset;
1800 skb_queue_head_init(&txq->pending_skbs);
1802 memset(&spec, 0, sizeof(spec));
1803 spec.type = GDMA_SQ;
1804 spec.monitor_avl_buf = true;
1805 spec.queue_size = txq_size;
1806 err = mana_gd_create_mana_wq_cq(gd, &spec, &txq->gdma_sq);
1810 /* Create SQ's CQ */
1811 cq = &apc->tx_qp[i].tx_cq;
1812 cq->type = MANA_CQ_TYPE_TX;
1816 memset(&spec, 0, sizeof(spec));
1817 spec.type = GDMA_CQ;
1818 spec.monitor_avl_buf = false;
1819 spec.queue_size = cq_size;
1820 spec.cq.callback = mana_schedule_napi;
1821 spec.cq.parent_eq = ac->eqs[i].eq;
1822 spec.cq.context = cq;
1823 err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq);
1827 memset(&wq_spec, 0, sizeof(wq_spec));
1828 memset(&cq_spec, 0, sizeof(cq_spec));
1830 wq_spec.gdma_region = txq->gdma_sq->mem_info.dma_region_handle;
1831 wq_spec.queue_size = txq->gdma_sq->queue_size;
1833 cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle;
1834 cq_spec.queue_size = cq->gdma_cq->queue_size;
1835 cq_spec.modr_ctx_id = 0;
1836 cq_spec.attached_eq = cq->gdma_cq->cq.parent->id;
1838 err = mana_create_wq_obj(apc, apc->port_handle, GDMA_SQ,
1840 &apc->tx_qp[i].tx_object);
1845 txq->gdma_sq->id = wq_spec.queue_index;
1846 cq->gdma_cq->id = cq_spec.queue_index;
1848 txq->gdma_sq->mem_info.dma_region_handle =
1849 GDMA_INVALID_DMA_REGION;
1850 cq->gdma_cq->mem_info.dma_region_handle =
1851 GDMA_INVALID_DMA_REGION;
1853 txq->gdma_txq_id = txq->gdma_sq->id;
1855 cq->gdma_id = cq->gdma_cq->id;
1857 if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) {
1862 gc->cq_table[cq->gdma_id] = cq->gdma_cq;
1864 netif_napi_add_tx(net, &cq->napi, mana_poll);
1865 napi_enable(&cq->napi);
1867 mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT);
1872 mana_destroy_txq(apc);
1876 static void mana_destroy_rxq(struct mana_port_context *apc,
1877 struct mana_rxq *rxq, bool validate_state)
1880 struct gdma_context *gc = apc->ac->gdma_dev->gdma_context;
1881 struct mana_recv_buf_oob *rx_oob;
1882 struct device *dev = gc->dev;
1883 struct napi_struct *napi;
1889 napi = &rxq->rx_cq.napi;
1892 napi_synchronize(napi);
1896 xdp_rxq_info_unreg(&rxq->xdp_rxq);
1898 netif_napi_del(napi);
1900 mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj);
1902 mana_deinit_cq(apc, &rxq->rx_cq);
1904 if (rxq->xdp_save_va)
1905 put_page(virt_to_head_page(rxq->xdp_save_va));
1907 for (i = 0; i < rxq->num_rx_buf; i++) {
1908 rx_oob = &rxq->rx_oobs[i];
1910 if (!rx_oob->buf_va)
1913 dma_unmap_single(dev, rx_oob->sgl[0].address,
1914 rx_oob->sgl[0].size, DMA_FROM_DEVICE);
1916 put_page(virt_to_head_page(rx_oob->buf_va));
1917 rx_oob->buf_va = NULL;
1921 mana_gd_destroy_queue(gc, rxq->gdma_rq);
1926 static int mana_fill_rx_oob(struct mana_recv_buf_oob *rx_oob, u32 mem_key,
1927 struct mana_rxq *rxq, struct device *dev)
1929 struct mana_port_context *mpc = netdev_priv(rxq->ndev);
1933 if (mpc->rxbufs_pre)
1934 va = mana_get_rxbuf_pre(rxq, &da);
1936 va = mana_get_rxfrag(rxq, dev, &da, false);
1941 rx_oob->buf_va = va;
1943 rx_oob->sgl[0].address = da;
1944 rx_oob->sgl[0].size = rxq->datasize;
1945 rx_oob->sgl[0].mem_key = mem_key;
1950 #define MANA_WQE_HEADER_SIZE 16
1951 #define MANA_WQE_SGE_SIZE 16
1953 static int mana_alloc_rx_wqe(struct mana_port_context *apc,
1954 struct mana_rxq *rxq, u32 *rxq_size, u32 *cq_size)
1956 struct gdma_context *gc = apc->ac->gdma_dev->gdma_context;
1957 struct mana_recv_buf_oob *rx_oob;
1958 struct device *dev = gc->dev;
1962 WARN_ON(rxq->datasize == 0);
1967 for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) {
1968 rx_oob = &rxq->rx_oobs[buf_idx];
1969 memset(rx_oob, 0, sizeof(*rx_oob));
1971 rx_oob->num_sge = 1;
1973 ret = mana_fill_rx_oob(rx_oob, apc->ac->gdma_dev->gpa_mkey, rxq,
1978 rx_oob->wqe_req.sgl = rx_oob->sgl;
1979 rx_oob->wqe_req.num_sge = rx_oob->num_sge;
1980 rx_oob->wqe_req.inline_oob_size = 0;
1981 rx_oob->wqe_req.inline_oob_data = NULL;
1982 rx_oob->wqe_req.flags = 0;
1983 rx_oob->wqe_req.client_data_unit = 0;
1985 *rxq_size += ALIGN(MANA_WQE_HEADER_SIZE +
1986 MANA_WQE_SGE_SIZE * rx_oob->num_sge, 32);
1987 *cq_size += COMP_ENTRY_SIZE;
1993 static int mana_push_wqe(struct mana_rxq *rxq)
1995 struct mana_recv_buf_oob *rx_oob;
1999 for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) {
2000 rx_oob = &rxq->rx_oobs[buf_idx];
2002 err = mana_gd_post_and_ring(rxq->gdma_rq, &rx_oob->wqe_req,
2011 static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc,
2012 u32 rxq_idx, struct mana_eq *eq,
2013 struct net_device *ndev)
2015 struct gdma_dev *gd = apc->ac->gdma_dev;
2016 struct mana_obj_spec wq_spec;
2017 struct mana_obj_spec cq_spec;
2018 struct gdma_queue_spec spec;
2019 struct mana_cq *cq = NULL;
2020 struct gdma_context *gc;
2021 u32 cq_size, rq_size;
2022 struct mana_rxq *rxq;
2025 gc = gd->gdma_context;
2027 rxq = kzalloc(struct_size(rxq, rx_oobs, RX_BUFFERS_PER_QUEUE),
2033 rxq->num_rx_buf = RX_BUFFERS_PER_QUEUE;
2034 rxq->rxq_idx = rxq_idx;
2035 rxq->rxobj = INVALID_MANA_HANDLE;
2037 mana_get_rxbuf_cfg(ndev->mtu, &rxq->datasize, &rxq->alloc_size,
2040 err = mana_alloc_rx_wqe(apc, rxq, &rq_size, &cq_size);
2044 rq_size = PAGE_ALIGN(rq_size);
2045 cq_size = PAGE_ALIGN(cq_size);
2048 memset(&spec, 0, sizeof(spec));
2049 spec.type = GDMA_RQ;
2050 spec.monitor_avl_buf = true;
2051 spec.queue_size = rq_size;
2052 err = mana_gd_create_mana_wq_cq(gd, &spec, &rxq->gdma_rq);
2056 /* Create RQ's CQ */
2058 cq->type = MANA_CQ_TYPE_RX;
2061 memset(&spec, 0, sizeof(spec));
2062 spec.type = GDMA_CQ;
2063 spec.monitor_avl_buf = false;
2064 spec.queue_size = cq_size;
2065 spec.cq.callback = mana_schedule_napi;
2066 spec.cq.parent_eq = eq->eq;
2067 spec.cq.context = cq;
2068 err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq);
2072 memset(&wq_spec, 0, sizeof(wq_spec));
2073 memset(&cq_spec, 0, sizeof(cq_spec));
2074 wq_spec.gdma_region = rxq->gdma_rq->mem_info.dma_region_handle;
2075 wq_spec.queue_size = rxq->gdma_rq->queue_size;
2077 cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle;
2078 cq_spec.queue_size = cq->gdma_cq->queue_size;
2079 cq_spec.modr_ctx_id = 0;
2080 cq_spec.attached_eq = cq->gdma_cq->cq.parent->id;
2082 err = mana_create_wq_obj(apc, apc->port_handle, GDMA_RQ,
2083 &wq_spec, &cq_spec, &rxq->rxobj);
2087 rxq->gdma_rq->id = wq_spec.queue_index;
2088 cq->gdma_cq->id = cq_spec.queue_index;
2090 rxq->gdma_rq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION;
2091 cq->gdma_cq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION;
2093 rxq->gdma_id = rxq->gdma_rq->id;
2094 cq->gdma_id = cq->gdma_cq->id;
2096 err = mana_push_wqe(rxq);
2100 if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) {
2105 gc->cq_table[cq->gdma_id] = cq->gdma_cq;
2107 netif_napi_add_weight(ndev, &cq->napi, mana_poll, 1);
2109 WARN_ON(xdp_rxq_info_reg(&rxq->xdp_rxq, ndev, rxq_idx,
2111 WARN_ON(xdp_rxq_info_reg_mem_model(&rxq->xdp_rxq,
2112 MEM_TYPE_PAGE_SHARED, NULL));
2114 napi_enable(&cq->napi);
2116 mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT);
2121 netdev_err(ndev, "Failed to create RXQ: err = %d\n", err);
2123 mana_destroy_rxq(apc, rxq, false);
2126 mana_deinit_cq(apc, cq);
2131 static int mana_add_rx_queues(struct mana_port_context *apc,
2132 struct net_device *ndev)
2134 struct mana_context *ac = apc->ac;
2135 struct mana_rxq *rxq;
2139 for (i = 0; i < apc->num_queues; i++) {
2140 rxq = mana_create_rxq(apc, i, &ac->eqs[i], ndev);
2146 u64_stats_init(&rxq->stats.syncp);
2151 apc->default_rxobj = apc->rxqs[0]->rxobj;
2156 static void mana_destroy_vport(struct mana_port_context *apc)
2158 struct gdma_dev *gd = apc->ac->gdma_dev;
2159 struct mana_rxq *rxq;
2162 for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) {
2163 rxq = apc->rxqs[rxq_idx];
2167 mana_destroy_rxq(apc, rxq, true);
2168 apc->rxqs[rxq_idx] = NULL;
2171 mana_destroy_txq(apc);
2172 mana_uncfg_vport(apc);
2174 if (gd->gdma_context->is_pf)
2175 mana_pf_deregister_hw_vport(apc);
2178 static int mana_create_vport(struct mana_port_context *apc,
2179 struct net_device *net)
2181 struct gdma_dev *gd = apc->ac->gdma_dev;
2184 apc->default_rxobj = INVALID_MANA_HANDLE;
2186 if (gd->gdma_context->is_pf) {
2187 err = mana_pf_register_hw_vport(apc);
2192 err = mana_cfg_vport(apc, gd->pdid, gd->doorbell);
2196 return mana_create_txq(apc, net);
2199 static void mana_rss_table_init(struct mana_port_context *apc)
2203 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++)
2204 apc->indir_table[i] =
2205 ethtool_rxfh_indir_default(i, apc->num_queues);
2208 int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx,
2209 bool update_hash, bool update_tab)
2216 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) {
2217 queue_idx = apc->indir_table[i];
2218 apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj;
2222 err = mana_cfg_vport_steering(apc, rx, true, update_hash, update_tab);
2226 mana_fence_rqs(apc);
2231 static int mana_init_port(struct net_device *ndev)
2233 struct mana_port_context *apc = netdev_priv(ndev);
2234 u32 max_txq, max_rxq, max_queues;
2235 int port_idx = apc->port_idx;
2236 u32 num_indirect_entries;
2239 err = mana_init_port_context(apc);
2243 err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq,
2244 &num_indirect_entries);
2246 netdev_err(ndev, "Failed to query info for vPort %d\n",
2251 max_queues = min_t(u32, max_txq, max_rxq);
2252 if (apc->max_queues > max_queues)
2253 apc->max_queues = max_queues;
2255 if (apc->num_queues > apc->max_queues)
2256 apc->num_queues = apc->max_queues;
2258 eth_hw_addr_set(ndev, apc->mac_addr);
2268 int mana_alloc_queues(struct net_device *ndev)
2270 struct mana_port_context *apc = netdev_priv(ndev);
2271 struct gdma_dev *gd = apc->ac->gdma_dev;
2274 err = mana_create_vport(apc, ndev);
2278 err = netif_set_real_num_tx_queues(ndev, apc->num_queues);
2282 err = mana_add_rx_queues(apc, ndev);
2286 apc->rss_state = apc->num_queues > 1 ? TRI_STATE_TRUE : TRI_STATE_FALSE;
2288 err = netif_set_real_num_rx_queues(ndev, apc->num_queues);
2292 mana_rss_table_init(apc);
2294 err = mana_config_rss(apc, TRI_STATE_TRUE, true, true);
2298 if (gd->gdma_context->is_pf) {
2299 err = mana_pf_register_filter(apc);
2304 mana_chn_setxdp(apc, mana_xdp_get(apc));
2309 mana_destroy_vport(apc);
2313 int mana_attach(struct net_device *ndev)
2315 struct mana_port_context *apc = netdev_priv(ndev);
2320 err = mana_init_port(ndev);
2324 if (apc->port_st_save) {
2325 err = mana_alloc_queues(ndev);
2327 mana_cleanup_port_context(apc);
2332 apc->port_is_up = apc->port_st_save;
2334 /* Ensure port state updated before txq state */
2337 if (apc->port_is_up)
2338 netif_carrier_on(ndev);
2340 netif_device_attach(ndev);
2345 static int mana_dealloc_queues(struct net_device *ndev)
2347 struct mana_port_context *apc = netdev_priv(ndev);
2348 struct gdma_dev *gd = apc->ac->gdma_dev;
2349 struct mana_txq *txq;
2352 if (apc->port_is_up)
2355 mana_chn_setxdp(apc, NULL);
2357 if (gd->gdma_context->is_pf)
2358 mana_pf_deregister_filter(apc);
2360 /* No packet can be transmitted now since apc->port_is_up is false.
2361 * There is still a tiny chance that mana_poll_tx_cq() can re-enable
2362 * a txq because it may not timely see apc->port_is_up being cleared
2363 * to false, but it doesn't matter since mana_start_xmit() drops any
2364 * new packets due to apc->port_is_up being false.
2366 * Drain all the in-flight TX packets
2368 for (i = 0; i < apc->num_queues; i++) {
2369 txq = &apc->tx_qp[i].txq;
2371 while (atomic_read(&txq->pending_sends) > 0)
2372 usleep_range(1000, 2000);
2375 /* We're 100% sure the queues can no longer be woken up, because
2376 * we're sure now mana_poll_tx_cq() can't be running.
2379 apc->rss_state = TRI_STATE_FALSE;
2380 err = mana_config_rss(apc, TRI_STATE_FALSE, false, false);
2382 netdev_err(ndev, "Failed to disable vPort: %d\n", err);
2386 mana_destroy_vport(apc);
2391 int mana_detach(struct net_device *ndev, bool from_close)
2393 struct mana_port_context *apc = netdev_priv(ndev);
2398 apc->port_st_save = apc->port_is_up;
2399 apc->port_is_up = false;
2401 /* Ensure port state updated before txq state */
2404 netif_tx_disable(ndev);
2405 netif_carrier_off(ndev);
2407 if (apc->port_st_save) {
2408 err = mana_dealloc_queues(ndev);
2414 netif_device_detach(ndev);
2415 mana_cleanup_port_context(apc);
2421 static int mana_probe_port(struct mana_context *ac, int port_idx,
2422 struct net_device **ndev_storage)
2424 struct gdma_context *gc = ac->gdma_dev->gdma_context;
2425 struct mana_port_context *apc;
2426 struct net_device *ndev;
2429 ndev = alloc_etherdev_mq(sizeof(struct mana_port_context),
2430 gc->max_num_queues);
2434 *ndev_storage = ndev;
2436 apc = netdev_priv(ndev);
2439 apc->max_queues = gc->max_num_queues;
2440 apc->num_queues = gc->max_num_queues;
2441 apc->port_handle = INVALID_MANA_HANDLE;
2442 apc->pf_filter_handle = INVALID_MANA_HANDLE;
2443 apc->port_idx = port_idx;
2445 mutex_init(&apc->vport_mutex);
2446 apc->vport_use_count = 0;
2448 ndev->netdev_ops = &mana_devops;
2449 ndev->ethtool_ops = &mana_ethtool_ops;
2450 ndev->mtu = ETH_DATA_LEN;
2451 ndev->max_mtu = gc->adapter_mtu - ETH_HLEN;
2452 ndev->min_mtu = ETH_MIN_MTU;
2453 ndev->needed_headroom = MANA_HEADROOM;
2454 ndev->dev_port = port_idx;
2455 SET_NETDEV_DEV(ndev, gc->dev);
2457 netif_carrier_off(ndev);
2459 netdev_rss_key_fill(apc->hashkey, MANA_HASH_KEY_SIZE);
2461 err = mana_init_port(ndev);
2465 netdev_lockdep_set_classes(ndev);
2467 ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2468 ndev->hw_features |= NETIF_F_RXCSUM;
2469 ndev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2470 ndev->hw_features |= NETIF_F_RXHASH;
2471 ndev->features = ndev->hw_features | NETIF_F_HW_VLAN_CTAG_TX |
2472 NETIF_F_HW_VLAN_CTAG_RX;
2473 ndev->vlan_features = ndev->features;
2474 ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
2475 NETDEV_XDP_ACT_NDO_XMIT;
2477 err = register_netdev(ndev);
2479 netdev_err(ndev, "Unable to register netdev.\n");
2489 *ndev_storage = NULL;
2490 netdev_err(ndev, "Failed to probe vPort %d: %d\n", port_idx, err);
2495 static void adev_release(struct device *dev)
2497 struct mana_adev *madev = container_of(dev, struct mana_adev, adev.dev);
2502 static void remove_adev(struct gdma_dev *gd)
2504 struct auxiliary_device *adev = gd->adev;
2507 auxiliary_device_delete(adev);
2508 auxiliary_device_uninit(adev);
2510 mana_adev_idx_free(id);
2514 static int add_adev(struct gdma_dev *gd)
2516 struct auxiliary_device *adev;
2517 struct mana_adev *madev;
2520 madev = kzalloc(sizeof(*madev), GFP_KERNEL);
2524 adev = &madev->adev;
2525 ret = mana_adev_idx_alloc();
2530 adev->name = "rdma";
2531 adev->dev.parent = gd->gdma_context->dev;
2532 adev->dev.release = adev_release;
2535 ret = auxiliary_device_init(adev);
2539 ret = auxiliary_device_add(adev);
2547 auxiliary_device_uninit(adev);
2550 mana_adev_idx_free(adev->id);
2558 int mana_probe(struct gdma_dev *gd, bool resuming)
2560 struct gdma_context *gc = gd->gdma_context;
2561 struct mana_context *ac = gd->driver_data;
2562 struct device *dev = gc->dev;
2568 "Microsoft Azure Network Adapter protocol version: %d.%d.%d\n",
2569 MANA_MAJOR_VERSION, MANA_MINOR_VERSION, MANA_MICRO_VERSION);
2571 err = mana_gd_register_device(gd);
2576 ac = kzalloc(sizeof(*ac), GFP_KERNEL);
2581 gd->driver_data = ac;
2584 err = mana_create_eq(ac);
2588 err = mana_query_device_cfg(ac, MANA_MAJOR_VERSION, MANA_MINOR_VERSION,
2589 MANA_MICRO_VERSION, &num_ports);
2594 ac->num_ports = num_ports;
2596 if (ac->num_ports != num_ports) {
2597 dev_err(dev, "The number of vPorts changed: %d->%d\n",
2598 ac->num_ports, num_ports);
2604 if (ac->num_ports == 0)
2605 dev_err(dev, "Failed to detect any vPort\n");
2607 if (ac->num_ports > MAX_PORTS_IN_MANA_DEV)
2608 ac->num_ports = MAX_PORTS_IN_MANA_DEV;
2611 for (i = 0; i < ac->num_ports; i++) {
2612 err = mana_probe_port(ac, i, &ac->ports[i]);
2617 for (i = 0; i < ac->num_ports; i++) {
2619 err = mana_attach(ac->ports[i]);
2629 mana_remove(gd, false);
2634 void mana_remove(struct gdma_dev *gd, bool suspending)
2636 struct gdma_context *gc = gd->gdma_context;
2637 struct mana_context *ac = gd->driver_data;
2638 struct device *dev = gc->dev;
2639 struct net_device *ndev;
2643 /* adev currently doesn't support suspending, always remove it */
2647 for (i = 0; i < ac->num_ports; i++) {
2648 ndev = ac->ports[i];
2651 dev_err(dev, "No net device to remove\n");
2655 /* All cleanup actions should stay after rtnl_lock(), otherwise
2656 * other functions may access partially cleaned up data.
2660 err = mana_detach(ndev, false);
2662 netdev_err(ndev, "Failed to detach vPort %d: %d\n",
2666 /* No need to unregister the ndev. */
2671 unregister_netdevice(ndev);
2678 mana_destroy_eq(ac);
2680 mana_gd_deregister_device(gd);
2685 gd->driver_data = NULL;
2686 gd->gdma_context = NULL;