1 /* QLogic qede NIC Driver
2 * Copyright (c) 2015 QLogic Corporation
4 * This software is available under the terms of the GNU General Public License
5 * (GPL) Version 2, available from the file COPYING in the main directory of
9 #include <linux/module.h>
10 #include <linux/pci.h>
11 #include <linux/version.h>
12 #include <linux/device.h>
13 #include <linux/netdevice.h>
14 #include <linux/etherdevice.h>
15 #include <linux/skbuff.h>
16 #include <linux/errno.h>
17 #include <linux/list.h>
18 #include <linux/string.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/interrupt.h>
21 #include <asm/byteorder.h>
22 #include <asm/param.h>
24 #include <linux/netdev_features.h>
25 #include <linux/udp.h>
26 #include <linux/tcp.h>
27 #include <net/udp_tunnel.h>
31 #include <linux/if_ether.h>
32 #include <linux/if_vlan.h>
33 #include <linux/pkt_sched.h>
34 #include <linux/ethtool.h>
36 #include <linux/random.h>
37 #include <net/ip6_checksum.h>
38 #include <linux/bitops.h>
42 static char version[] =
43 "QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
45 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION(DRV_MODULE_VERSION);
50 module_param(debug, uint, 0);
51 MODULE_PARM_DESC(debug, " Default debug msglevel");
53 static const struct qed_eth_ops *qed_ops;
55 #define CHIP_NUM_57980S_40 0x1634
56 #define CHIP_NUM_57980S_10 0x1666
57 #define CHIP_NUM_57980S_MF 0x1636
58 #define CHIP_NUM_57980S_100 0x1644
59 #define CHIP_NUM_57980S_50 0x1654
60 #define CHIP_NUM_57980S_25 0x1656
61 #define CHIP_NUM_57980S_IOV 0x1664
63 #ifndef PCI_DEVICE_ID_NX2_57980E
64 #define PCI_DEVICE_ID_57980S_40 CHIP_NUM_57980S_40
65 #define PCI_DEVICE_ID_57980S_10 CHIP_NUM_57980S_10
66 #define PCI_DEVICE_ID_57980S_MF CHIP_NUM_57980S_MF
67 #define PCI_DEVICE_ID_57980S_100 CHIP_NUM_57980S_100
68 #define PCI_DEVICE_ID_57980S_50 CHIP_NUM_57980S_50
69 #define PCI_DEVICE_ID_57980S_25 CHIP_NUM_57980S_25
70 #define PCI_DEVICE_ID_57980S_IOV CHIP_NUM_57980S_IOV
73 enum qede_pci_private {
78 static const struct pci_device_id qede_pci_tbl[] = {
79 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
80 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
81 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
82 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
83 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
84 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
85 #ifdef CONFIG_QED_SRIOV
86 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
91 MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
93 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
95 #define TX_TIMEOUT (5 * HZ)
97 static void qede_remove(struct pci_dev *pdev);
98 static int qede_alloc_rx_buffer(struct qede_dev *edev,
99 struct qede_rx_queue *rxq);
100 static void qede_link_update(void *dev, struct qed_link_output *link);
102 #ifdef CONFIG_QED_SRIOV
103 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
106 struct qede_dev *edev = netdev_priv(ndev);
109 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
113 if (vlan_proto != htons(ETH_P_8021Q))
114 return -EPROTONOSUPPORT;
116 DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
119 return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
122 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
124 struct qede_dev *edev = netdev_priv(ndev);
126 DP_VERBOSE(edev, QED_MSG_IOV,
127 "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n",
128 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx);
130 if (!is_valid_ether_addr(mac)) {
131 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
135 return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
138 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
140 struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
141 struct qed_dev_info *qed_info = &edev->dev_info.common;
144 DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
146 rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
148 /* Enable/Disable Tx switching for PF */
149 if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
150 qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) {
151 struct qed_update_vport_params params;
153 memset(¶ms, 0, sizeof(params));
155 params.update_tx_switching_flg = 1;
156 params.tx_switching_flg = num_vfs_param ? 1 : 0;
157 edev->ops->vport_update(edev->cdev, ¶ms);
164 static struct pci_driver qede_pci_driver = {
166 .id_table = qede_pci_tbl,
168 .remove = qede_remove,
169 #ifdef CONFIG_QED_SRIOV
170 .sriov_configure = qede_sriov_configure,
174 static void qede_force_mac(void *dev, u8 *mac)
176 struct qede_dev *edev = dev;
178 ether_addr_copy(edev->ndev->dev_addr, mac);
179 ether_addr_copy(edev->primary_mac, mac);
182 static struct qed_eth_cb_ops qede_ll_ops = {
184 .link_update = qede_link_update,
186 .force_mac = qede_force_mac,
189 static int qede_netdev_event(struct notifier_block *this, unsigned long event,
192 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
193 struct ethtool_drvinfo drvinfo;
194 struct qede_dev *edev;
196 /* Currently only support name change */
197 if (event != NETDEV_CHANGENAME)
200 /* Check whether this is a qede device */
201 if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
204 memset(&drvinfo, 0, sizeof(drvinfo));
205 ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
206 if (strcmp(drvinfo.driver, "qede"))
208 edev = netdev_priv(ndev);
210 /* Notify qed of the name change */
211 if (!edev->ops || !edev->ops->common)
213 edev->ops->common->set_id(edev->cdev, edev->ndev->name,
220 static struct notifier_block qede_netdev_notifier = {
221 .notifier_call = qede_netdev_event,
225 int __init qede_init(void)
229 pr_info("qede_init: %s\n", version);
231 qed_ops = qed_get_eth_ops();
233 pr_notice("Failed to get qed ethtool operations\n");
237 /* Must register notifier before pci ops, since we might miss
238 * interface rename after pci probe and netdev registeration.
240 ret = register_netdevice_notifier(&qede_netdev_notifier);
242 pr_notice("Failed to register netdevice_notifier\n");
247 ret = pci_register_driver(&qede_pci_driver);
249 pr_notice("Failed to register driver\n");
250 unregister_netdevice_notifier(&qede_netdev_notifier);
258 static void __exit qede_cleanup(void)
260 if (debug & QED_LOG_INFO_MASK)
261 pr_info("qede_cleanup called\n");
263 unregister_netdevice_notifier(&qede_netdev_notifier);
264 pci_unregister_driver(&qede_pci_driver);
268 module_init(qede_init);
269 module_exit(qede_cleanup);
271 /* -------------------------------------------------------------------------
273 * -------------------------------------------------------------------------
276 /* Unmap the data and free skb */
277 static int qede_free_tx_pkt(struct qede_dev *edev,
278 struct qede_tx_queue *txq, int *len)
280 u16 idx = txq->sw_tx_cons & NUM_TX_BDS_MAX;
281 struct sk_buff *skb = txq->sw_tx_ring[idx].skb;
282 struct eth_tx_1st_bd *first_bd;
283 struct eth_tx_bd *tx_data_bd;
284 int bds_consumed = 0;
286 bool data_split = txq->sw_tx_ring[idx].flags & QEDE_TSO_SPLIT_BD;
287 int i, split_bd_len = 0;
289 if (unlikely(!skb)) {
291 "skb is null for txq idx=%d txq->sw_tx_cons=%d txq->sw_tx_prod=%d\n",
292 idx, txq->sw_tx_cons, txq->sw_tx_prod);
298 first_bd = (struct eth_tx_1st_bd *)qed_chain_consume(&txq->tx_pbl);
302 nbds = first_bd->data.nbds;
305 struct eth_tx_bd *split = (struct eth_tx_bd *)
306 qed_chain_consume(&txq->tx_pbl);
307 split_bd_len = BD_UNMAP_LEN(split);
310 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
311 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
313 /* Unmap the data of the skb frags */
314 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, bds_consumed++) {
315 tx_data_bd = (struct eth_tx_bd *)
316 qed_chain_consume(&txq->tx_pbl);
317 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
318 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
321 while (bds_consumed++ < nbds)
322 qed_chain_consume(&txq->tx_pbl);
325 dev_kfree_skb_any(skb);
326 txq->sw_tx_ring[idx].skb = NULL;
327 txq->sw_tx_ring[idx].flags = 0;
332 /* Unmap the data and free skb when mapping failed during start_xmit */
333 static void qede_free_failed_tx_pkt(struct qede_dev *edev,
334 struct qede_tx_queue *txq,
335 struct eth_tx_1st_bd *first_bd,
336 int nbd, bool data_split)
338 u16 idx = txq->sw_tx_prod & NUM_TX_BDS_MAX;
339 struct sk_buff *skb = txq->sw_tx_ring[idx].skb;
340 struct eth_tx_bd *tx_data_bd;
341 int i, split_bd_len = 0;
343 /* Return prod to its position before this skb was handled */
344 qed_chain_set_prod(&txq->tx_pbl,
345 le16_to_cpu(txq->tx_db.data.bd_prod), first_bd);
347 first_bd = (struct eth_tx_1st_bd *)qed_chain_produce(&txq->tx_pbl);
350 struct eth_tx_bd *split = (struct eth_tx_bd *)
351 qed_chain_produce(&txq->tx_pbl);
352 split_bd_len = BD_UNMAP_LEN(split);
356 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
357 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
359 /* Unmap the data of the skb frags */
360 for (i = 0; i < nbd; i++) {
361 tx_data_bd = (struct eth_tx_bd *)
362 qed_chain_produce(&txq->tx_pbl);
363 if (tx_data_bd->nbytes)
364 dma_unmap_page(&edev->pdev->dev,
365 BD_UNMAP_ADDR(tx_data_bd),
366 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
369 /* Return again prod to its position before this skb was handled */
370 qed_chain_set_prod(&txq->tx_pbl,
371 le16_to_cpu(txq->tx_db.data.bd_prod), first_bd);
374 dev_kfree_skb_any(skb);
375 txq->sw_tx_ring[idx].skb = NULL;
376 txq->sw_tx_ring[idx].flags = 0;
379 static u32 qede_xmit_type(struct qede_dev *edev,
380 struct sk_buff *skb, int *ipv6_ext)
382 u32 rc = XMIT_L4_CSUM;
385 if (skb->ip_summed != CHECKSUM_PARTIAL)
388 l3_proto = vlan_get_protocol(skb);
389 if (l3_proto == htons(ETH_P_IPV6) &&
390 (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
393 if (skb->encapsulation)
402 static void qede_set_params_for_ipv6_ext(struct sk_buff *skb,
403 struct eth_tx_2nd_bd *second_bd,
404 struct eth_tx_3rd_bd *third_bd)
407 u16 bd2_bits1 = 0, bd2_bits2 = 0;
409 bd2_bits1 |= (1 << ETH_TX_DATA_2ND_BD_IPV6_EXT_SHIFT);
411 bd2_bits2 |= ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) &
412 ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_MASK)
413 << ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_SHIFT;
415 bd2_bits1 |= (ETH_L4_PSEUDO_CSUM_CORRECT_LENGTH <<
416 ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_SHIFT);
418 if (vlan_get_protocol(skb) == htons(ETH_P_IPV6))
419 l4_proto = ipv6_hdr(skb)->nexthdr;
421 l4_proto = ip_hdr(skb)->protocol;
423 if (l4_proto == IPPROTO_UDP)
424 bd2_bits1 |= 1 << ETH_TX_DATA_2ND_BD_L4_UDP_SHIFT;
427 third_bd->data.bitfields |=
428 cpu_to_le16(((tcp_hdrlen(skb) / 4) &
429 ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_MASK) <<
430 ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_SHIFT);
432 second_bd->data.bitfields1 = cpu_to_le16(bd2_bits1);
433 second_bd->data.bitfields2 = cpu_to_le16(bd2_bits2);
436 static int map_frag_to_bd(struct qede_dev *edev,
437 skb_frag_t *frag, struct eth_tx_bd *bd)
441 /* Map skb non-linear frag data for DMA */
442 mapping = skb_frag_dma_map(&edev->pdev->dev, frag, 0,
443 skb_frag_size(frag), DMA_TO_DEVICE);
444 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
445 DP_NOTICE(edev, "Unable to map frag - dropping packet\n");
449 /* Setup the data pointer of the frag data */
450 BD_SET_UNMAP_ADDR_LEN(bd, mapping, skb_frag_size(frag));
455 static u16 qede_get_skb_hlen(struct sk_buff *skb, bool is_encap_pkt)
458 return (skb_inner_transport_header(skb) +
459 inner_tcp_hdrlen(skb) - skb->data);
461 return (skb_transport_header(skb) +
462 tcp_hdrlen(skb) - skb->data);
465 /* +2 for 1st BD for headers and 2nd BD for headlen (if required) */
466 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
467 static bool qede_pkt_req_lin(struct qede_dev *edev, struct sk_buff *skb,
470 int allowed_frags = ETH_TX_MAX_BDS_PER_NON_LSO_PACKET - 1;
472 if (xmit_type & XMIT_LSO) {
475 hlen = qede_get_skb_hlen(skb, xmit_type & XMIT_ENC);
477 /* linear payload would require its own BD */
478 if (skb_headlen(skb) > hlen)
482 return (skb_shinfo(skb)->nr_frags > allowed_frags);
486 static inline void qede_update_tx_producer(struct qede_tx_queue *txq)
488 /* wmb makes sure that the BDs data is updated before updating the
489 * producer, otherwise FW may read old data from the BDs.
493 writel(txq->tx_db.raw, txq->doorbell_addr);
495 /* mmiowb is needed to synchronize doorbell writes from more than one
496 * processor. It guarantees that the write arrives to the device before
497 * the queue lock is released and another start_xmit is called (possibly
498 * on another CPU). Without this barrier, the next doorbell can bypass
499 * this doorbell. This is applicable to IA64/Altix systems.
504 /* Main transmit function */
505 static netdev_tx_t qede_start_xmit(struct sk_buff *skb,
506 struct net_device *ndev)
508 struct qede_dev *edev = netdev_priv(ndev);
509 struct netdev_queue *netdev_txq;
510 struct qede_tx_queue *txq;
511 struct eth_tx_1st_bd *first_bd;
512 struct eth_tx_2nd_bd *second_bd = NULL;
513 struct eth_tx_3rd_bd *third_bd = NULL;
514 struct eth_tx_bd *tx_data_bd = NULL;
518 int rc, frag_idx = 0, ipv6_ext = 0;
522 bool data_split = false;
524 /* Get tx-queue context and netdev index */
525 txq_index = skb_get_queue_mapping(skb);
526 WARN_ON(txq_index >= QEDE_TSS_COUNT(edev));
527 txq = QEDE_TX_QUEUE(edev, txq_index);
528 netdev_txq = netdev_get_tx_queue(ndev, txq_index);
530 WARN_ON(qed_chain_get_elem_left(&txq->tx_pbl) < (MAX_SKB_FRAGS + 1));
532 xmit_type = qede_xmit_type(edev, skb, &ipv6_ext);
534 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
535 if (qede_pkt_req_lin(edev, skb, xmit_type)) {
536 if (skb_linearize(skb)) {
538 "SKB linearization failed - silently dropping this SKB\n");
539 dev_kfree_skb_any(skb);
545 /* Fill the entry in the SW ring and the BDs in the FW ring */
546 idx = txq->sw_tx_prod & NUM_TX_BDS_MAX;
547 txq->sw_tx_ring[idx].skb = skb;
548 first_bd = (struct eth_tx_1st_bd *)
549 qed_chain_produce(&txq->tx_pbl);
550 memset(first_bd, 0, sizeof(*first_bd));
551 first_bd->data.bd_flags.bitfields =
552 1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT;
554 /* Map skb linear data for DMA and set in the first BD */
555 mapping = dma_map_single(&edev->pdev->dev, skb->data,
556 skb_headlen(skb), DMA_TO_DEVICE);
557 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
558 DP_NOTICE(edev, "SKB mapping failed\n");
559 qede_free_failed_tx_pkt(edev, txq, first_bd, 0, false);
560 qede_update_tx_producer(txq);
564 BD_SET_UNMAP_ADDR_LEN(first_bd, mapping, skb_headlen(skb));
566 /* In case there is IPv6 with extension headers or LSO we need 2nd and
569 if (unlikely((xmit_type & XMIT_LSO) | ipv6_ext)) {
570 second_bd = (struct eth_tx_2nd_bd *)
571 qed_chain_produce(&txq->tx_pbl);
572 memset(second_bd, 0, sizeof(*second_bd));
575 third_bd = (struct eth_tx_3rd_bd *)
576 qed_chain_produce(&txq->tx_pbl);
577 memset(third_bd, 0, sizeof(*third_bd));
580 /* We need to fill in additional data in second_bd... */
581 tx_data_bd = (struct eth_tx_bd *)second_bd;
584 if (skb_vlan_tag_present(skb)) {
585 first_bd->data.vlan = cpu_to_le16(skb_vlan_tag_get(skb));
586 first_bd->data.bd_flags.bitfields |=
587 1 << ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT;
590 /* Fill the parsing flags & params according to the requested offload */
591 if (xmit_type & XMIT_L4_CSUM) {
592 /* We don't re-calculate IP checksum as it is already done by
595 first_bd->data.bd_flags.bitfields |=
596 1 << ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT;
598 if (xmit_type & XMIT_ENC) {
599 first_bd->data.bd_flags.bitfields |=
600 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
601 first_bd->data.bitfields |=
602 1 << ETH_TX_DATA_1ST_BD_TUNN_FLAG_SHIFT;
605 /* Legacy FW had flipped behavior in regard to this bit -
606 * I.e., needed to set to prevent FW from touching encapsulated
607 * packets when it didn't need to.
609 if (unlikely(txq->is_legacy))
610 first_bd->data.bitfields ^=
611 1 << ETH_TX_DATA_1ST_BD_TUNN_FLAG_SHIFT;
613 /* If the packet is IPv6 with extension header, indicate that
614 * to FW and pass few params, since the device cracker doesn't
615 * support parsing IPv6 with extension header/s.
617 if (unlikely(ipv6_ext))
618 qede_set_params_for_ipv6_ext(skb, second_bd, third_bd);
621 if (xmit_type & XMIT_LSO) {
622 first_bd->data.bd_flags.bitfields |=
623 (1 << ETH_TX_1ST_BD_FLAGS_LSO_SHIFT);
624 third_bd->data.lso_mss =
625 cpu_to_le16(skb_shinfo(skb)->gso_size);
627 if (unlikely(xmit_type & XMIT_ENC)) {
628 first_bd->data.bd_flags.bitfields |=
629 1 << ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_SHIFT;
630 hlen = qede_get_skb_hlen(skb, true);
632 first_bd->data.bd_flags.bitfields |=
633 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
634 hlen = qede_get_skb_hlen(skb, false);
637 /* @@@TBD - if will not be removed need to check */
638 third_bd->data.bitfields |=
639 cpu_to_le16((1 << ETH_TX_DATA_3RD_BD_HDR_NBD_SHIFT));
641 /* Make life easier for FW guys who can't deal with header and
642 * data on same BD. If we need to split, use the second bd...
644 if (unlikely(skb_headlen(skb) > hlen)) {
645 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
646 "TSO split header size is %d (%x:%x)\n",
647 first_bd->nbytes, first_bd->addr.hi,
650 mapping = HILO_U64(le32_to_cpu(first_bd->addr.hi),
651 le32_to_cpu(first_bd->addr.lo)) +
654 BD_SET_UNMAP_ADDR_LEN(tx_data_bd, mapping,
655 le16_to_cpu(first_bd->nbytes) -
658 /* this marks the BD as one that has no
661 txq->sw_tx_ring[idx].flags |= QEDE_TSO_SPLIT_BD;
663 first_bd->nbytes = cpu_to_le16(hlen);
665 tx_data_bd = (struct eth_tx_bd *)third_bd;
669 first_bd->data.bitfields |=
670 (skb->len & ETH_TX_DATA_1ST_BD_PKT_LEN_MASK) <<
671 ETH_TX_DATA_1ST_BD_PKT_LEN_SHIFT;
674 /* Handle fragmented skb */
675 /* special handle for frags inside 2nd and 3rd bds.. */
676 while (tx_data_bd && frag_idx < skb_shinfo(skb)->nr_frags) {
677 rc = map_frag_to_bd(edev,
678 &skb_shinfo(skb)->frags[frag_idx],
681 qede_free_failed_tx_pkt(edev, txq, first_bd, nbd,
683 qede_update_tx_producer(txq);
687 if (tx_data_bd == (struct eth_tx_bd *)second_bd)
688 tx_data_bd = (struct eth_tx_bd *)third_bd;
695 /* map last frags into 4th, 5th .... */
696 for (; frag_idx < skb_shinfo(skb)->nr_frags; frag_idx++, nbd++) {
697 tx_data_bd = (struct eth_tx_bd *)
698 qed_chain_produce(&txq->tx_pbl);
700 memset(tx_data_bd, 0, sizeof(*tx_data_bd));
702 rc = map_frag_to_bd(edev,
703 &skb_shinfo(skb)->frags[frag_idx],
706 qede_free_failed_tx_pkt(edev, txq, first_bd, nbd,
708 qede_update_tx_producer(txq);
713 /* update the first BD with the actual num BDs */
714 first_bd->data.nbds = nbd;
716 netdev_tx_sent_queue(netdev_txq, skb->len);
718 skb_tx_timestamp(skb);
720 /* Advance packet producer only before sending the packet since mapping
725 /* 'next page' entries are counted in the producer value */
726 txq->tx_db.data.bd_prod =
727 cpu_to_le16(qed_chain_get_prod_idx(&txq->tx_pbl));
729 if (!skb->xmit_more || netif_xmit_stopped(netdev_txq))
730 qede_update_tx_producer(txq);
732 if (unlikely(qed_chain_get_elem_left(&txq->tx_pbl)
733 < (MAX_SKB_FRAGS + 1))) {
735 qede_update_tx_producer(txq);
737 netif_tx_stop_queue(netdev_txq);
739 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
740 "Stop queue was called\n");
741 /* paired memory barrier is in qede_tx_int(), we have to keep
742 * ordering of set_bit() in netif_tx_stop_queue() and read of
747 if (qed_chain_get_elem_left(&txq->tx_pbl)
748 >= (MAX_SKB_FRAGS + 1) &&
749 (edev->state == QEDE_STATE_OPEN)) {
750 netif_tx_wake_queue(netdev_txq);
751 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
752 "Wake queue was called\n");
759 int qede_txq_has_work(struct qede_tx_queue *txq)
763 /* Tell compiler that consumer and producer can change */
765 hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr);
766 if (qed_chain_get_cons_idx(&txq->tx_pbl) == hw_bd_cons + 1)
769 return hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl);
772 static int qede_tx_int(struct qede_dev *edev, struct qede_tx_queue *txq)
774 struct netdev_queue *netdev_txq;
776 unsigned int pkts_compl = 0, bytes_compl = 0;
779 netdev_txq = netdev_get_tx_queue(edev->ndev, txq->index);
781 hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr);
784 while (hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl)) {
787 rc = qede_free_tx_pkt(edev, txq, &len);
789 DP_NOTICE(edev, "hw_bd_cons = %d, chain_cons=%d\n",
791 qed_chain_get_cons_idx(&txq->tx_pbl));
801 netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl);
803 /* Need to make the tx_bd_cons update visible to start_xmit()
804 * before checking for netif_tx_queue_stopped(). Without the
805 * memory barrier, there is a small possibility that
806 * start_xmit() will miss it and cause the queue to be stopped
808 * On the other hand we need an rmb() here to ensure the proper
809 * ordering of bit testing in the following
810 * netif_tx_queue_stopped(txq) call.
814 if (unlikely(netif_tx_queue_stopped(netdev_txq))) {
815 /* Taking tx_lock is needed to prevent reenabling the queue
816 * while it's empty. This could have happen if rx_action() gets
817 * suspended in qede_tx_int() after the condition before
818 * netif_tx_wake_queue(), while tx_action (qede_start_xmit()):
820 * stops the queue->sees fresh tx_bd_cons->releases the queue->
821 * sends some packets consuming the whole queue again->
825 __netif_tx_lock(netdev_txq, smp_processor_id());
827 if ((netif_tx_queue_stopped(netdev_txq)) &&
828 (edev->state == QEDE_STATE_OPEN) &&
829 (qed_chain_get_elem_left(&txq->tx_pbl)
830 >= (MAX_SKB_FRAGS + 1))) {
831 netif_tx_wake_queue(netdev_txq);
832 DP_VERBOSE(edev, NETIF_MSG_TX_DONE,
833 "Wake queue was called\n");
836 __netif_tx_unlock(netdev_txq);
842 bool qede_has_rx_work(struct qede_rx_queue *rxq)
844 u16 hw_comp_cons, sw_comp_cons;
846 /* Tell compiler that status block fields can change */
849 hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
850 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
852 return hw_comp_cons != sw_comp_cons;
855 static bool qede_has_tx_work(struct qede_fastpath *fp)
859 for (tc = 0; tc < fp->edev->num_tc; tc++)
860 if (qede_txq_has_work(&fp->txqs[tc]))
865 static inline void qede_rx_bd_ring_consume(struct qede_rx_queue *rxq)
867 qed_chain_consume(&rxq->rx_bd_ring);
871 /* This function reuses the buffer(from an offset) from
872 * consumer index to producer index in the bd ring
874 static inline void qede_reuse_page(struct qede_dev *edev,
875 struct qede_rx_queue *rxq,
876 struct sw_rx_data *curr_cons)
878 struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring);
879 struct sw_rx_data *curr_prod;
880 dma_addr_t new_mapping;
882 curr_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
883 *curr_prod = *curr_cons;
885 new_mapping = curr_prod->mapping + curr_prod->page_offset;
887 rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(new_mapping));
888 rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(new_mapping));
891 curr_cons->data = NULL;
894 /* In case of allocation failures reuse buffers
895 * from consumer index to produce buffers for firmware
897 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq,
898 struct qede_dev *edev, u8 count)
900 struct sw_rx_data *curr_cons;
902 for (; count > 0; count--) {
903 curr_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX];
904 qede_reuse_page(edev, rxq, curr_cons);
905 qede_rx_bd_ring_consume(rxq);
909 static inline int qede_realloc_rx_buffer(struct qede_dev *edev,
910 struct qede_rx_queue *rxq,
911 struct sw_rx_data *curr_cons)
913 /* Move to the next segment in the page */
914 curr_cons->page_offset += rxq->rx_buf_seg_size;
916 if (curr_cons->page_offset == PAGE_SIZE) {
917 if (unlikely(qede_alloc_rx_buffer(edev, rxq))) {
918 /* Since we failed to allocate new buffer
919 * current buffer can be used again.
921 curr_cons->page_offset -= rxq->rx_buf_seg_size;
926 dma_unmap_page(&edev->pdev->dev, curr_cons->mapping,
927 PAGE_SIZE, DMA_FROM_DEVICE);
929 /* Increment refcount of the page as we don't want
930 * network stack to take the ownership of the page
931 * which can be recycled multiple times by the driver.
933 page_ref_inc(curr_cons->data);
934 qede_reuse_page(edev, rxq, curr_cons);
940 static inline void qede_update_rx_prod(struct qede_dev *edev,
941 struct qede_rx_queue *rxq)
943 u16 bd_prod = qed_chain_get_prod_idx(&rxq->rx_bd_ring);
944 u16 cqe_prod = qed_chain_get_prod_idx(&rxq->rx_comp_ring);
945 struct eth_rx_prod_data rx_prods = {0};
947 /* Update producers */
948 rx_prods.bd_prod = cpu_to_le16(bd_prod);
949 rx_prods.cqe_prod = cpu_to_le16(cqe_prod);
951 /* Make sure that the BD and SGE data is updated before updating the
952 * producers since FW might read the BD/SGE right after the producer
957 internal_ram_wr(rxq->hw_rxq_prod_addr, sizeof(rx_prods),
960 /* mmiowb is needed to synchronize doorbell writes from more than one
961 * processor. It guarantees that the write arrives to the device before
962 * the napi lock is released and another qede_poll is called (possibly
963 * on another CPU). Without this barrier, the next doorbell can bypass
964 * this doorbell. This is applicable to IA64/Altix systems.
969 static u32 qede_get_rxhash(struct qede_dev *edev,
971 __le32 rss_hash, enum pkt_hash_types *rxhash_type)
973 enum rss_hash_type htype;
975 htype = GET_FIELD(bitfields, ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE);
977 if ((edev->ndev->features & NETIF_F_RXHASH) && htype) {
978 *rxhash_type = ((htype == RSS_HASH_TYPE_IPV4) ||
979 (htype == RSS_HASH_TYPE_IPV6)) ?
980 PKT_HASH_TYPE_L3 : PKT_HASH_TYPE_L4;
981 return le32_to_cpu(rss_hash);
983 *rxhash_type = PKT_HASH_TYPE_NONE;
987 static void qede_set_skb_csum(struct sk_buff *skb, u8 csum_flag)
989 skb_checksum_none_assert(skb);
991 if (csum_flag & QEDE_CSUM_UNNECESSARY)
992 skb->ip_summed = CHECKSUM_UNNECESSARY;
994 if (csum_flag & QEDE_TUNN_CSUM_UNNECESSARY)
998 static inline void qede_skb_receive(struct qede_dev *edev,
999 struct qede_fastpath *fp,
1000 struct sk_buff *skb, u16 vlan_tag)
1003 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
1005 napi_gro_receive(&fp->napi, skb);
1008 static void qede_set_gro_params(struct qede_dev *edev,
1009 struct sk_buff *skb,
1010 struct eth_fast_path_rx_tpa_start_cqe *cqe)
1012 u16 parsing_flags = le16_to_cpu(cqe->pars_flags.flags);
1014 if (((parsing_flags >> PARSING_AND_ERR_FLAGS_L3TYPE_SHIFT) &
1015 PARSING_AND_ERR_FLAGS_L3TYPE_MASK) == 2)
1016 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1018 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1020 skb_shinfo(skb)->gso_size = __le16_to_cpu(cqe->len_on_first_bd) -
1024 static int qede_fill_frag_skb(struct qede_dev *edev,
1025 struct qede_rx_queue *rxq,
1026 u8 tpa_agg_index, u16 len_on_bd)
1028 struct sw_rx_data *current_bd = &rxq->sw_rx_ring[rxq->sw_rx_cons &
1030 struct qede_agg_info *tpa_info = &rxq->tpa_info[tpa_agg_index];
1031 struct sk_buff *skb = tpa_info->skb;
1033 if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START))
1036 /* Add one frag and update the appropriate fields in the skb */
1037 skb_fill_page_desc(skb, tpa_info->frag_id++,
1038 current_bd->data, current_bd->page_offset,
1041 if (unlikely(qede_realloc_rx_buffer(edev, rxq, current_bd))) {
1042 /* Incr page ref count to reuse on allocation failure
1043 * so that it doesn't get freed while freeing SKB.
1045 page_ref_inc(current_bd->data);
1049 qed_chain_consume(&rxq->rx_bd_ring);
1052 skb->data_len += len_on_bd;
1053 skb->truesize += rxq->rx_buf_seg_size;
1054 skb->len += len_on_bd;
1059 tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1060 qede_recycle_rx_bd_ring(rxq, edev, 1);
1064 static void qede_tpa_start(struct qede_dev *edev,
1065 struct qede_rx_queue *rxq,
1066 struct eth_fast_path_rx_tpa_start_cqe *cqe)
1068 struct qede_agg_info *tpa_info = &rxq->tpa_info[cqe->tpa_agg_index];
1069 struct eth_rx_bd *rx_bd_cons = qed_chain_consume(&rxq->rx_bd_ring);
1070 struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring);
1071 struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
1072 dma_addr_t mapping = tpa_info->replace_buf_mapping;
1073 struct sw_rx_data *sw_rx_data_cons;
1074 struct sw_rx_data *sw_rx_data_prod;
1075 enum pkt_hash_types rxhash_type;
1078 sw_rx_data_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX];
1079 sw_rx_data_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
1081 /* Use pre-allocated replacement buffer - we can't release the agg.
1082 * start until its over and we don't want to risk allocation failing
1083 * here, so re-allocate when aggregation will be over.
1085 sw_rx_data_prod->mapping = replace_buf->mapping;
1087 sw_rx_data_prod->data = replace_buf->data;
1088 rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(mapping));
1089 rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(mapping));
1090 sw_rx_data_prod->page_offset = replace_buf->page_offset;
1094 /* move partial skb from cons to pool (don't unmap yet)
1095 * save mapping, incase we drop the packet later on.
1097 tpa_info->start_buf = *sw_rx_data_cons;
1098 mapping = HILO_U64(le32_to_cpu(rx_bd_cons->addr.hi),
1099 le32_to_cpu(rx_bd_cons->addr.lo));
1101 tpa_info->start_buf_mapping = mapping;
1104 /* set tpa state to start only if we are able to allocate skb
1105 * for this aggregation, otherwise mark as error and aggregation will
1108 tpa_info->skb = netdev_alloc_skb(edev->ndev,
1109 le16_to_cpu(cqe->len_on_first_bd));
1110 if (unlikely(!tpa_info->skb)) {
1111 DP_NOTICE(edev, "Failed to allocate SKB for gro\n");
1112 tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1116 skb_put(tpa_info->skb, le16_to_cpu(cqe->len_on_first_bd));
1117 memcpy(&tpa_info->start_cqe, cqe, sizeof(tpa_info->start_cqe));
1119 /* Start filling in the aggregation info */
1120 tpa_info->frag_id = 0;
1121 tpa_info->agg_state = QEDE_AGG_STATE_START;
1123 rxhash = qede_get_rxhash(edev, cqe->bitfields,
1124 cqe->rss_hash, &rxhash_type);
1125 skb_set_hash(tpa_info->skb, rxhash, rxhash_type);
1126 if ((le16_to_cpu(cqe->pars_flags.flags) >>
1127 PARSING_AND_ERR_FLAGS_TAG8021QEXIST_SHIFT) &
1128 PARSING_AND_ERR_FLAGS_TAG8021QEXIST_MASK)
1129 tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
1131 tpa_info->vlan_tag = 0;
1133 /* This is needed in order to enable forwarding support */
1134 qede_set_gro_params(edev, tpa_info->skb, cqe);
1136 cons_buf: /* We still need to handle bd_len_list to consume buffers */
1137 if (likely(cqe->ext_bd_len_list[0]))
1138 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
1139 le16_to_cpu(cqe->ext_bd_len_list[0]));
1141 if (unlikely(cqe->ext_bd_len_list[1])) {
1143 "Unlikely - got a TPA aggregation with more than one ext_bd_len_list entry in the TPA start\n");
1144 tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1149 static void qede_gro_ip_csum(struct sk_buff *skb)
1151 const struct iphdr *iph = ip_hdr(skb);
1154 skb_set_transport_header(skb, sizeof(struct iphdr));
1157 th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
1158 iph->saddr, iph->daddr, 0);
1160 tcp_gro_complete(skb);
1163 static void qede_gro_ipv6_csum(struct sk_buff *skb)
1165 struct ipv6hdr *iph = ipv6_hdr(skb);
1168 skb_set_transport_header(skb, sizeof(struct ipv6hdr));
1171 th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
1172 &iph->saddr, &iph->daddr, 0);
1173 tcp_gro_complete(skb);
1177 static void qede_gro_receive(struct qede_dev *edev,
1178 struct qede_fastpath *fp,
1179 struct sk_buff *skb,
1182 /* FW can send a single MTU sized packet from gro flow
1183 * due to aggregation timeout/last segment etc. which
1184 * is not expected to be a gro packet. If a skb has zero
1185 * frags then simply push it in the stack as non gso skb.
1187 if (unlikely(!skb->data_len)) {
1188 skb_shinfo(skb)->gso_type = 0;
1189 skb_shinfo(skb)->gso_size = 0;
1194 if (skb_shinfo(skb)->gso_size) {
1195 skb_set_network_header(skb, 0);
1197 switch (skb->protocol) {
1198 case htons(ETH_P_IP):
1199 qede_gro_ip_csum(skb);
1201 case htons(ETH_P_IPV6):
1202 qede_gro_ipv6_csum(skb);
1206 "Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
1207 ntohs(skb->protocol));
1213 skb_record_rx_queue(skb, fp->rxq->rxq_id);
1214 qede_skb_receive(edev, fp, skb, vlan_tag);
1217 static inline void qede_tpa_cont(struct qede_dev *edev,
1218 struct qede_rx_queue *rxq,
1219 struct eth_fast_path_rx_tpa_cont_cqe *cqe)
1223 for (i = 0; cqe->len_list[i]; i++)
1224 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
1225 le16_to_cpu(cqe->len_list[i]));
1227 if (unlikely(i > 1))
1229 "Strange - TPA cont with more than a single len_list entry\n");
1232 static void qede_tpa_end(struct qede_dev *edev,
1233 struct qede_fastpath *fp,
1234 struct eth_fast_path_rx_tpa_end_cqe *cqe)
1236 struct qede_rx_queue *rxq = fp->rxq;
1237 struct qede_agg_info *tpa_info;
1238 struct sk_buff *skb;
1241 tpa_info = &rxq->tpa_info[cqe->tpa_agg_index];
1242 skb = tpa_info->skb;
1244 for (i = 0; cqe->len_list[i]; i++)
1245 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
1246 le16_to_cpu(cqe->len_list[i]));
1247 if (unlikely(i > 1))
1249 "Strange - TPA emd with more than a single len_list entry\n");
1251 if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START))
1255 if (unlikely(cqe->num_of_bds != tpa_info->frag_id + 1))
1257 "Strange - TPA had %02x BDs, but SKB has only %d frags\n",
1258 cqe->num_of_bds, tpa_info->frag_id);
1259 if (unlikely(skb->len != le16_to_cpu(cqe->total_packet_len)))
1261 "Strange - total packet len [cqe] is %4x but SKB has len %04x\n",
1262 le16_to_cpu(cqe->total_packet_len), skb->len);
1265 page_address(tpa_info->start_buf.data) +
1266 tpa_info->start_cqe.placement_offset +
1267 tpa_info->start_buf.page_offset,
1268 le16_to_cpu(tpa_info->start_cqe.len_on_first_bd));
1270 /* Recycle [mapped] start buffer for the next replacement */
1271 tpa_info->replace_buf = tpa_info->start_buf;
1272 tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping;
1274 /* Finalize the SKB */
1275 skb->protocol = eth_type_trans(skb, edev->ndev);
1276 skb->ip_summed = CHECKSUM_UNNECESSARY;
1278 /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
1279 * to skb_shinfo(skb)->gso_segs
1281 NAPI_GRO_CB(skb)->count = le16_to_cpu(cqe->num_of_coalesced_segs);
1283 qede_gro_receive(edev, fp, skb, tpa_info->vlan_tag);
1285 tpa_info->agg_state = QEDE_AGG_STATE_NONE;
1289 /* The BD starting the aggregation is still mapped; Re-use it for
1290 * future aggregations [as replacement buffer]
1292 memcpy(&tpa_info->replace_buf, &tpa_info->start_buf,
1293 sizeof(struct sw_rx_data));
1294 tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping;
1295 tpa_info->start_buf.data = NULL;
1296 tpa_info->agg_state = QEDE_AGG_STATE_NONE;
1297 dev_kfree_skb_any(tpa_info->skb);
1298 tpa_info->skb = NULL;
1301 static bool qede_tunn_exist(u16 flag)
1303 return !!(flag & (PARSING_AND_ERR_FLAGS_TUNNELEXIST_MASK <<
1304 PARSING_AND_ERR_FLAGS_TUNNELEXIST_SHIFT));
1307 static u8 qede_check_tunn_csum(u16 flag)
1312 if (flag & (PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_MASK <<
1313 PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_SHIFT))
1314 csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_MASK <<
1315 PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_SHIFT;
1317 if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
1318 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) {
1319 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
1320 PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
1321 tcsum = QEDE_TUNN_CSUM_UNNECESSARY;
1324 csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_MASK <<
1325 PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_SHIFT |
1326 PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
1327 PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;
1329 if (csum_flag & flag)
1330 return QEDE_CSUM_ERROR;
1332 return QEDE_CSUM_UNNECESSARY | tcsum;
1335 static u8 qede_check_notunn_csum(u16 flag)
1340 if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
1341 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) {
1342 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
1343 PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
1344 csum = QEDE_CSUM_UNNECESSARY;
1347 csum_flag |= PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
1348 PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;
1350 if (csum_flag & flag)
1351 return QEDE_CSUM_ERROR;
1356 static u8 qede_check_csum(u16 flag)
1358 if (!qede_tunn_exist(flag))
1359 return qede_check_notunn_csum(flag);
1361 return qede_check_tunn_csum(flag);
1364 static bool qede_pkt_is_ip_fragmented(struct eth_fast_path_rx_reg_cqe *cqe,
1367 u8 tun_pars_flg = cqe->tunnel_pars_flags.flags;
1369 if ((tun_pars_flg & (ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_MASK <<
1370 ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_SHIFT)) ||
1371 (flag & (PARSING_AND_ERR_FLAGS_IPV4FRAG_MASK <<
1372 PARSING_AND_ERR_FLAGS_IPV4FRAG_SHIFT)))
1378 static int qede_rx_int(struct qede_fastpath *fp, int budget)
1380 struct qede_dev *edev = fp->edev;
1381 struct qede_rx_queue *rxq = fp->rxq;
1383 u16 hw_comp_cons, sw_comp_cons, sw_rx_index, parse_flag;
1387 hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
1388 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
1390 /* Memory barrier to prevent the CPU from doing speculative reads of CQE
1391 * / BD in the while-loop before reading hw_comp_cons. If the CQE is
1392 * read before it is written by FW, then FW writes CQE and SB, and then
1393 * the CPU reads the hw_comp_cons, it will use an old CQE.
1397 /* Loop to complete all indicated BDs */
1398 while (sw_comp_cons != hw_comp_cons) {
1399 struct eth_fast_path_rx_reg_cqe *fp_cqe;
1400 enum pkt_hash_types rxhash_type;
1401 enum eth_rx_cqe_type cqe_type;
1402 struct sw_rx_data *sw_rx_data;
1403 union eth_rx_cqe *cqe;
1404 struct sk_buff *skb;
1410 /* Get the CQE from the completion ring */
1411 cqe = (union eth_rx_cqe *)
1412 qed_chain_consume(&rxq->rx_comp_ring);
1413 cqe_type = cqe->fast_path_regular.type;
1415 if (unlikely(cqe_type == ETH_RX_CQE_TYPE_SLOW_PATH)) {
1416 edev->ops->eth_cqe_completion(
1418 (struct eth_slow_path_rx_cqe *)cqe);
1422 if (cqe_type != ETH_RX_CQE_TYPE_REGULAR) {
1424 case ETH_RX_CQE_TYPE_TPA_START:
1425 qede_tpa_start(edev, rxq,
1426 &cqe->fast_path_tpa_start);
1428 case ETH_RX_CQE_TYPE_TPA_CONT:
1429 qede_tpa_cont(edev, rxq,
1430 &cqe->fast_path_tpa_cont);
1432 case ETH_RX_CQE_TYPE_TPA_END:
1433 qede_tpa_end(edev, fp,
1434 &cqe->fast_path_tpa_end);
1441 /* Get the data from the SW ring */
1442 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
1443 sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
1444 data = sw_rx_data->data;
1446 fp_cqe = &cqe->fast_path_regular;
1447 len = le16_to_cpu(fp_cqe->len_on_first_bd);
1448 pad = fp_cqe->placement_offset;
1449 flags = cqe->fast_path_regular.pars_flags.flags;
1451 /* If this is an error packet then drop it */
1452 parse_flag = le16_to_cpu(flags);
1454 csum_flag = qede_check_csum(parse_flag);
1455 if (unlikely(csum_flag == QEDE_CSUM_ERROR)) {
1456 if (qede_pkt_is_ip_fragmented(&cqe->fast_path_regular,
1463 "CQE in CONS = %u has error, flags = %x, dropping incoming packet\n",
1464 sw_comp_cons, parse_flag);
1465 rxq->rx_hw_errors++;
1466 qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num);
1471 skb = netdev_alloc_skb(edev->ndev, QEDE_RX_HDR_SIZE);
1472 if (unlikely(!skb)) {
1474 "skb allocation failed, dropping incoming packet\n");
1475 qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num);
1476 rxq->rx_alloc_errors++;
1480 /* Copy data into SKB */
1481 if (len + pad <= edev->rx_copybreak) {
1482 memcpy(skb_put(skb, len),
1483 page_address(data) + pad +
1484 sw_rx_data->page_offset, len);
1485 qede_reuse_page(edev, rxq, sw_rx_data);
1487 struct skb_frag_struct *frag;
1488 unsigned int pull_len;
1491 frag = &skb_shinfo(skb)->frags[0];
1493 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, data,
1494 pad + sw_rx_data->page_offset,
1495 len, rxq->rx_buf_seg_size);
1497 va = skb_frag_address(frag);
1498 pull_len = eth_get_headlen(va, QEDE_RX_HDR_SIZE);
1500 /* Align the pull_len to optimize memcpy */
1501 memcpy(skb->data, va, ALIGN(pull_len, sizeof(long)));
1503 skb_frag_size_sub(frag, pull_len);
1504 frag->page_offset += pull_len;
1505 skb->data_len -= pull_len;
1506 skb->tail += pull_len;
1508 if (unlikely(qede_realloc_rx_buffer(edev, rxq,
1510 DP_ERR(edev, "Failed to allocate rx buffer\n");
1511 /* Incr page ref count to reuse on allocation
1512 * failure so that it doesn't get freed while
1516 page_ref_inc(sw_rx_data->data);
1517 rxq->rx_alloc_errors++;
1518 qede_recycle_rx_bd_ring(rxq, edev,
1520 dev_kfree_skb_any(skb);
1525 qede_rx_bd_ring_consume(rxq);
1527 if (fp_cqe->bd_num != 1) {
1528 u16 pkt_len = le16_to_cpu(fp_cqe->pkt_len);
1533 for (num_frags = fp_cqe->bd_num - 1; num_frags > 0;
1535 u16 cur_size = pkt_len > rxq->rx_buf_size ?
1536 rxq->rx_buf_size : pkt_len;
1537 if (unlikely(!cur_size)) {
1539 "Still got %d BDs for mapping jumbo, but length became 0\n",
1541 qede_recycle_rx_bd_ring(rxq, edev,
1543 dev_kfree_skb_any(skb);
1547 if (unlikely(qede_alloc_rx_buffer(edev, rxq))) {
1548 qede_recycle_rx_bd_ring(rxq, edev,
1550 dev_kfree_skb_any(skb);
1554 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
1555 sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
1556 qede_rx_bd_ring_consume(rxq);
1558 dma_unmap_page(&edev->pdev->dev,
1559 sw_rx_data->mapping,
1560 PAGE_SIZE, DMA_FROM_DEVICE);
1562 skb_fill_page_desc(skb,
1563 skb_shinfo(skb)->nr_frags++,
1564 sw_rx_data->data, 0,
1567 skb->truesize += PAGE_SIZE;
1568 skb->data_len += cur_size;
1569 skb->len += cur_size;
1570 pkt_len -= cur_size;
1573 if (unlikely(pkt_len))
1575 "Mapped all BDs of jumbo, but still have %d bytes\n",
1579 skb->protocol = eth_type_trans(skb, edev->ndev);
1581 rx_hash = qede_get_rxhash(edev, fp_cqe->bitfields,
1582 fp_cqe->rss_hash, &rxhash_type);
1584 skb_set_hash(skb, rx_hash, rxhash_type);
1586 qede_set_skb_csum(skb, csum_flag);
1588 skb_record_rx_queue(skb, fp->rxq->rxq_id);
1590 qede_skb_receive(edev, fp, skb, le16_to_cpu(fp_cqe->vlan_tag));
1594 next_cqe: /* don't consume bd rx buffer */
1595 qed_chain_recycle_consumed(&rxq->rx_comp_ring);
1596 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
1597 /* CR TPA - revisit how to handle budget in TPA perhaps
1600 if (rx_pkt == budget)
1602 } /* repeat while sw_comp_cons != hw_comp_cons... */
1604 /* Update producers */
1605 qede_update_rx_prod(edev, rxq);
1607 rxq->rcv_pkts += rx_pkt;
1612 static int qede_poll(struct napi_struct *napi, int budget)
1614 struct qede_fastpath *fp = container_of(napi, struct qede_fastpath,
1616 struct qede_dev *edev = fp->edev;
1617 int rx_work_done = 0;
1620 for (tc = 0; tc < edev->num_tc; tc++)
1621 if (likely(fp->type & QEDE_FASTPATH_TX) &&
1622 qede_txq_has_work(&fp->txqs[tc]))
1623 qede_tx_int(edev, &fp->txqs[tc]);
1625 rx_work_done = (likely(fp->type & QEDE_FASTPATH_RX) &&
1626 qede_has_rx_work(fp->rxq)) ?
1627 qede_rx_int(fp, budget) : 0;
1628 if (rx_work_done < budget) {
1629 qed_sb_update_sb_idx(fp->sb_info);
1630 /* *_has_*_work() reads the status block,
1631 * thus we need to ensure that status block indices
1632 * have been actually read (qed_sb_update_sb_idx)
1633 * prior to this check (*_has_*_work) so that
1634 * we won't write the "newer" value of the status block
1635 * to HW (if there was a DMA right after
1636 * qede_has_rx_work and if there is no rmb, the memory
1637 * reading (qed_sb_update_sb_idx) may be postponed
1638 * to right before *_ack_sb). In this case there
1639 * will never be another interrupt until there is
1640 * another update of the status block, while there
1641 * is still unhandled work.
1645 /* Fall out from the NAPI loop if needed */
1646 if (!((likely(fp->type & QEDE_FASTPATH_RX) &&
1647 qede_has_rx_work(fp->rxq)) ||
1648 (likely(fp->type & QEDE_FASTPATH_TX) &&
1649 qede_has_tx_work(fp)))) {
1650 napi_complete(napi);
1652 /* Update and reenable interrupts */
1653 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE,
1656 rx_work_done = budget;
1660 return rx_work_done;
1663 static irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie)
1665 struct qede_fastpath *fp = fp_cookie;
1667 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
1669 napi_schedule_irqoff(&fp->napi);
1673 /* -------------------------------------------------------------------------
1675 * -------------------------------------------------------------------------
1678 static int qede_open(struct net_device *ndev);
1679 static int qede_close(struct net_device *ndev);
1680 static int qede_set_mac_addr(struct net_device *ndev, void *p);
1681 static void qede_set_rx_mode(struct net_device *ndev);
1682 static void qede_config_rx_mode(struct net_device *ndev);
1684 static int qede_set_ucast_rx_mac(struct qede_dev *edev,
1685 enum qed_filter_xcast_params_type opcode,
1686 unsigned char mac[ETH_ALEN])
1688 struct qed_filter_params filter_cmd;
1690 memset(&filter_cmd, 0, sizeof(filter_cmd));
1691 filter_cmd.type = QED_FILTER_TYPE_UCAST;
1692 filter_cmd.filter.ucast.type = opcode;
1693 filter_cmd.filter.ucast.mac_valid = 1;
1694 ether_addr_copy(filter_cmd.filter.ucast.mac, mac);
1696 return edev->ops->filter_config(edev->cdev, &filter_cmd);
1699 static int qede_set_ucast_rx_vlan(struct qede_dev *edev,
1700 enum qed_filter_xcast_params_type opcode,
1703 struct qed_filter_params filter_cmd;
1705 memset(&filter_cmd, 0, sizeof(filter_cmd));
1706 filter_cmd.type = QED_FILTER_TYPE_UCAST;
1707 filter_cmd.filter.ucast.type = opcode;
1708 filter_cmd.filter.ucast.vlan_valid = 1;
1709 filter_cmd.filter.ucast.vlan = vid;
1711 return edev->ops->filter_config(edev->cdev, &filter_cmd);
1714 void qede_fill_by_demand_stats(struct qede_dev *edev)
1716 struct qed_eth_stats stats;
1718 edev->ops->get_vport_stats(edev->cdev, &stats);
1719 edev->stats.no_buff_discards = stats.no_buff_discards;
1720 edev->stats.packet_too_big_discard = stats.packet_too_big_discard;
1721 edev->stats.ttl0_discard = stats.ttl0_discard;
1722 edev->stats.rx_ucast_bytes = stats.rx_ucast_bytes;
1723 edev->stats.rx_mcast_bytes = stats.rx_mcast_bytes;
1724 edev->stats.rx_bcast_bytes = stats.rx_bcast_bytes;
1725 edev->stats.rx_ucast_pkts = stats.rx_ucast_pkts;
1726 edev->stats.rx_mcast_pkts = stats.rx_mcast_pkts;
1727 edev->stats.rx_bcast_pkts = stats.rx_bcast_pkts;
1728 edev->stats.mftag_filter_discards = stats.mftag_filter_discards;
1729 edev->stats.mac_filter_discards = stats.mac_filter_discards;
1731 edev->stats.tx_ucast_bytes = stats.tx_ucast_bytes;
1732 edev->stats.tx_mcast_bytes = stats.tx_mcast_bytes;
1733 edev->stats.tx_bcast_bytes = stats.tx_bcast_bytes;
1734 edev->stats.tx_ucast_pkts = stats.tx_ucast_pkts;
1735 edev->stats.tx_mcast_pkts = stats.tx_mcast_pkts;
1736 edev->stats.tx_bcast_pkts = stats.tx_bcast_pkts;
1737 edev->stats.tx_err_drop_pkts = stats.tx_err_drop_pkts;
1738 edev->stats.coalesced_pkts = stats.tpa_coalesced_pkts;
1739 edev->stats.coalesced_events = stats.tpa_coalesced_events;
1740 edev->stats.coalesced_aborts_num = stats.tpa_aborts_num;
1741 edev->stats.non_coalesced_pkts = stats.tpa_not_coalesced_pkts;
1742 edev->stats.coalesced_bytes = stats.tpa_coalesced_bytes;
1744 edev->stats.rx_64_byte_packets = stats.rx_64_byte_packets;
1745 edev->stats.rx_65_to_127_byte_packets = stats.rx_65_to_127_byte_packets;
1746 edev->stats.rx_128_to_255_byte_packets =
1747 stats.rx_128_to_255_byte_packets;
1748 edev->stats.rx_256_to_511_byte_packets =
1749 stats.rx_256_to_511_byte_packets;
1750 edev->stats.rx_512_to_1023_byte_packets =
1751 stats.rx_512_to_1023_byte_packets;
1752 edev->stats.rx_1024_to_1518_byte_packets =
1753 stats.rx_1024_to_1518_byte_packets;
1754 edev->stats.rx_1519_to_1522_byte_packets =
1755 stats.rx_1519_to_1522_byte_packets;
1756 edev->stats.rx_1519_to_2047_byte_packets =
1757 stats.rx_1519_to_2047_byte_packets;
1758 edev->stats.rx_2048_to_4095_byte_packets =
1759 stats.rx_2048_to_4095_byte_packets;
1760 edev->stats.rx_4096_to_9216_byte_packets =
1761 stats.rx_4096_to_9216_byte_packets;
1762 edev->stats.rx_9217_to_16383_byte_packets =
1763 stats.rx_9217_to_16383_byte_packets;
1764 edev->stats.rx_crc_errors = stats.rx_crc_errors;
1765 edev->stats.rx_mac_crtl_frames = stats.rx_mac_crtl_frames;
1766 edev->stats.rx_pause_frames = stats.rx_pause_frames;
1767 edev->stats.rx_pfc_frames = stats.rx_pfc_frames;
1768 edev->stats.rx_align_errors = stats.rx_align_errors;
1769 edev->stats.rx_carrier_errors = stats.rx_carrier_errors;
1770 edev->stats.rx_oversize_packets = stats.rx_oversize_packets;
1771 edev->stats.rx_jabbers = stats.rx_jabbers;
1772 edev->stats.rx_undersize_packets = stats.rx_undersize_packets;
1773 edev->stats.rx_fragments = stats.rx_fragments;
1774 edev->stats.tx_64_byte_packets = stats.tx_64_byte_packets;
1775 edev->stats.tx_65_to_127_byte_packets = stats.tx_65_to_127_byte_packets;
1776 edev->stats.tx_128_to_255_byte_packets =
1777 stats.tx_128_to_255_byte_packets;
1778 edev->stats.tx_256_to_511_byte_packets =
1779 stats.tx_256_to_511_byte_packets;
1780 edev->stats.tx_512_to_1023_byte_packets =
1781 stats.tx_512_to_1023_byte_packets;
1782 edev->stats.tx_1024_to_1518_byte_packets =
1783 stats.tx_1024_to_1518_byte_packets;
1784 edev->stats.tx_1519_to_2047_byte_packets =
1785 stats.tx_1519_to_2047_byte_packets;
1786 edev->stats.tx_2048_to_4095_byte_packets =
1787 stats.tx_2048_to_4095_byte_packets;
1788 edev->stats.tx_4096_to_9216_byte_packets =
1789 stats.tx_4096_to_9216_byte_packets;
1790 edev->stats.tx_9217_to_16383_byte_packets =
1791 stats.tx_9217_to_16383_byte_packets;
1792 edev->stats.tx_pause_frames = stats.tx_pause_frames;
1793 edev->stats.tx_pfc_frames = stats.tx_pfc_frames;
1794 edev->stats.tx_lpi_entry_count = stats.tx_lpi_entry_count;
1795 edev->stats.tx_total_collisions = stats.tx_total_collisions;
1796 edev->stats.brb_truncates = stats.brb_truncates;
1797 edev->stats.brb_discards = stats.brb_discards;
1798 edev->stats.tx_mac_ctrl_frames = stats.tx_mac_ctrl_frames;
1802 struct rtnl_link_stats64 *qede_get_stats64(struct net_device *dev,
1803 struct rtnl_link_stats64 *stats)
1805 struct qede_dev *edev = netdev_priv(dev);
1807 qede_fill_by_demand_stats(edev);
1809 stats->rx_packets = edev->stats.rx_ucast_pkts +
1810 edev->stats.rx_mcast_pkts +
1811 edev->stats.rx_bcast_pkts;
1812 stats->tx_packets = edev->stats.tx_ucast_pkts +
1813 edev->stats.tx_mcast_pkts +
1814 edev->stats.tx_bcast_pkts;
1816 stats->rx_bytes = edev->stats.rx_ucast_bytes +
1817 edev->stats.rx_mcast_bytes +
1818 edev->stats.rx_bcast_bytes;
1820 stats->tx_bytes = edev->stats.tx_ucast_bytes +
1821 edev->stats.tx_mcast_bytes +
1822 edev->stats.tx_bcast_bytes;
1824 stats->tx_errors = edev->stats.tx_err_drop_pkts;
1825 stats->multicast = edev->stats.rx_mcast_pkts +
1826 edev->stats.rx_bcast_pkts;
1828 stats->rx_fifo_errors = edev->stats.no_buff_discards;
1830 stats->collisions = edev->stats.tx_total_collisions;
1831 stats->rx_crc_errors = edev->stats.rx_crc_errors;
1832 stats->rx_frame_errors = edev->stats.rx_align_errors;
1837 #ifdef CONFIG_QED_SRIOV
1838 static int qede_get_vf_config(struct net_device *dev, int vfidx,
1839 struct ifla_vf_info *ivi)
1841 struct qede_dev *edev = netdev_priv(dev);
1846 return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
1849 static int qede_set_vf_rate(struct net_device *dev, int vfidx,
1850 int min_tx_rate, int max_tx_rate)
1852 struct qede_dev *edev = netdev_priv(dev);
1854 return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
1858 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
1860 struct qede_dev *edev = netdev_priv(dev);
1865 return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
1868 static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
1871 struct qede_dev *edev = netdev_priv(dev);
1876 return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
1880 static void qede_config_accept_any_vlan(struct qede_dev *edev, bool action)
1882 struct qed_update_vport_params params;
1885 /* Proceed only if action actually needs to be performed */
1886 if (edev->accept_any_vlan == action)
1889 memset(¶ms, 0, sizeof(params));
1891 params.vport_id = 0;
1892 params.accept_any_vlan = action;
1893 params.update_accept_any_vlan_flg = 1;
1895 rc = edev->ops->vport_update(edev->cdev, ¶ms);
1897 DP_ERR(edev, "Failed to %s accept-any-vlan\n",
1898 action ? "enable" : "disable");
1900 DP_INFO(edev, "%s accept-any-vlan\n",
1901 action ? "enabled" : "disabled");
1902 edev->accept_any_vlan = action;
1906 static int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1908 struct qede_dev *edev = netdev_priv(dev);
1909 struct qede_vlan *vlan, *tmp;
1912 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan 0x%04x\n", vid);
1914 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1916 DP_INFO(edev, "Failed to allocate struct for vlan\n");
1919 INIT_LIST_HEAD(&vlan->list);
1921 vlan->configured = false;
1923 /* Verify vlan isn't already configured */
1924 list_for_each_entry(tmp, &edev->vlan_list, list) {
1925 if (tmp->vid == vlan->vid) {
1926 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
1927 "vlan already configured\n");
1933 /* If interface is down, cache this VLAN ID and return */
1934 if (edev->state != QEDE_STATE_OPEN) {
1935 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
1936 "Interface is down, VLAN %d will be configured when interface is up\n",
1939 edev->non_configured_vlans++;
1940 list_add(&vlan->list, &edev->vlan_list);
1945 /* Check for the filter limit.
1946 * Note - vlan0 has a reserved filter and can be added without
1947 * worrying about quota
1949 if ((edev->configured_vlans < edev->dev_info.num_vlan_filters) ||
1951 rc = qede_set_ucast_rx_vlan(edev,
1952 QED_FILTER_XCAST_TYPE_ADD,
1955 DP_ERR(edev, "Failed to configure VLAN %d\n",
1960 vlan->configured = true;
1962 /* vlan0 filter isn't consuming out of our quota */
1964 edev->configured_vlans++;
1966 /* Out of quota; Activate accept-any-VLAN mode */
1967 if (!edev->non_configured_vlans)
1968 qede_config_accept_any_vlan(edev, true);
1970 edev->non_configured_vlans++;
1973 list_add(&vlan->list, &edev->vlan_list);
1978 static void qede_del_vlan_from_list(struct qede_dev *edev,
1979 struct qede_vlan *vlan)
1981 /* vlan0 filter isn't consuming out of our quota */
1982 if (vlan->vid != 0) {
1983 if (vlan->configured)
1984 edev->configured_vlans--;
1986 edev->non_configured_vlans--;
1989 list_del(&vlan->list);
1993 static int qede_configure_vlan_filters(struct qede_dev *edev)
1995 int rc = 0, real_rc = 0, accept_any_vlan = 0;
1996 struct qed_dev_eth_info *dev_info;
1997 struct qede_vlan *vlan = NULL;
1999 if (list_empty(&edev->vlan_list))
2002 dev_info = &edev->dev_info;
2004 /* Configure non-configured vlans */
2005 list_for_each_entry(vlan, &edev->vlan_list, list) {
2006 if (vlan->configured)
2009 /* We have used all our credits, now enable accept_any_vlan */
2010 if ((vlan->vid != 0) &&
2011 (edev->configured_vlans == dev_info->num_vlan_filters)) {
2012 accept_any_vlan = 1;
2016 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan %d\n", vlan->vid);
2018 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_ADD,
2021 DP_ERR(edev, "Failed to configure VLAN %u\n",
2027 vlan->configured = true;
2028 /* vlan0 filter doesn't consume our VLAN filter's quota */
2029 if (vlan->vid != 0) {
2030 edev->non_configured_vlans--;
2031 edev->configured_vlans++;
2035 /* enable accept_any_vlan mode if we have more VLANs than credits,
2036 * or remove accept_any_vlan mode if we've actually removed
2037 * a non-configured vlan, and all remaining vlans are truly configured.
2040 if (accept_any_vlan)
2041 qede_config_accept_any_vlan(edev, true);
2042 else if (!edev->non_configured_vlans)
2043 qede_config_accept_any_vlan(edev, false);
2048 static int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
2050 struct qede_dev *edev = netdev_priv(dev);
2051 struct qede_vlan *vlan = NULL;
2054 DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);
2056 /* Find whether entry exists */
2057 list_for_each_entry(vlan, &edev->vlan_list, list)
2058 if (vlan->vid == vid)
2061 if (!vlan || (vlan->vid != vid)) {
2062 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
2063 "Vlan isn't configured\n");
2067 if (edev->state != QEDE_STATE_OPEN) {
2068 /* As interface is already down, we don't have a VPORT
2069 * instance to remove vlan filter. So just update vlan list
2071 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
2072 "Interface is down, removing VLAN from list only\n");
2073 qede_del_vlan_from_list(edev, vlan);
2078 if (vlan->configured) {
2079 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL,
2082 DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
2087 qede_del_vlan_from_list(edev, vlan);
2089 /* We have removed a VLAN - try to see if we can
2090 * configure non-configured VLAN from the list.
2092 rc = qede_configure_vlan_filters(edev);
2097 static void qede_vlan_mark_nonconfigured(struct qede_dev *edev)
2099 struct qede_vlan *vlan = NULL;
2101 if (list_empty(&edev->vlan_list))
2104 list_for_each_entry(vlan, &edev->vlan_list, list) {
2105 if (!vlan->configured)
2108 vlan->configured = false;
2110 /* vlan0 filter isn't consuming out of our quota */
2111 if (vlan->vid != 0) {
2112 edev->non_configured_vlans++;
2113 edev->configured_vlans--;
2116 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
2117 "marked vlan %d as non-configured\n", vlan->vid);
2120 edev->accept_any_vlan = false;
2123 static int qede_set_features(struct net_device *dev, netdev_features_t features)
2125 struct qede_dev *edev = netdev_priv(dev);
2126 netdev_features_t changes = features ^ dev->features;
2127 bool need_reload = false;
2129 /* No action needed if hardware GRO is disabled during driver load */
2130 if (changes & NETIF_F_GRO) {
2131 if (dev->features & NETIF_F_GRO)
2132 need_reload = !edev->gro_disable;
2134 need_reload = edev->gro_disable;
2137 if (need_reload && netif_running(edev->ndev)) {
2138 dev->features = features;
2139 qede_reload(edev, NULL, NULL);
2146 static void qede_udp_tunnel_add(struct net_device *dev,
2147 struct udp_tunnel_info *ti)
2149 struct qede_dev *edev = netdev_priv(dev);
2150 u16 t_port = ntohs(ti->port);
2153 case UDP_TUNNEL_TYPE_VXLAN:
2154 if (edev->vxlan_dst_port)
2157 edev->vxlan_dst_port = t_port;
2159 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added vxlan port=%d\n",
2162 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
2164 case UDP_TUNNEL_TYPE_GENEVE:
2165 if (edev->geneve_dst_port)
2168 edev->geneve_dst_port = t_port;
2170 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added geneve port=%d\n",
2172 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
2178 schedule_delayed_work(&edev->sp_task, 0);
2181 static void qede_udp_tunnel_del(struct net_device *dev,
2182 struct udp_tunnel_info *ti)
2184 struct qede_dev *edev = netdev_priv(dev);
2185 u16 t_port = ntohs(ti->port);
2188 case UDP_TUNNEL_TYPE_VXLAN:
2189 if (t_port != edev->vxlan_dst_port)
2192 edev->vxlan_dst_port = 0;
2194 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted vxlan port=%d\n",
2197 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
2199 case UDP_TUNNEL_TYPE_GENEVE:
2200 if (t_port != edev->geneve_dst_port)
2203 edev->geneve_dst_port = 0;
2205 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted geneve port=%d\n",
2207 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
2213 schedule_delayed_work(&edev->sp_task, 0);
2216 static const struct net_device_ops qede_netdev_ops = {
2217 .ndo_open = qede_open,
2218 .ndo_stop = qede_close,
2219 .ndo_start_xmit = qede_start_xmit,
2220 .ndo_set_rx_mode = qede_set_rx_mode,
2221 .ndo_set_mac_address = qede_set_mac_addr,
2222 .ndo_validate_addr = eth_validate_addr,
2223 .ndo_change_mtu = qede_change_mtu,
2224 #ifdef CONFIG_QED_SRIOV
2225 .ndo_set_vf_mac = qede_set_vf_mac,
2226 .ndo_set_vf_vlan = qede_set_vf_vlan,
2228 .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
2229 .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
2230 .ndo_set_features = qede_set_features,
2231 .ndo_get_stats64 = qede_get_stats64,
2232 #ifdef CONFIG_QED_SRIOV
2233 .ndo_set_vf_link_state = qede_set_vf_link_state,
2234 .ndo_set_vf_spoofchk = qede_set_vf_spoofchk,
2235 .ndo_get_vf_config = qede_get_vf_config,
2236 .ndo_set_vf_rate = qede_set_vf_rate,
2238 .ndo_udp_tunnel_add = qede_udp_tunnel_add,
2239 .ndo_udp_tunnel_del = qede_udp_tunnel_del,
2242 /* -------------------------------------------------------------------------
2243 * START OF PROBE / REMOVE
2244 * -------------------------------------------------------------------------
2247 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
2248 struct pci_dev *pdev,
2249 struct qed_dev_eth_info *info,
2250 u32 dp_module, u8 dp_level)
2252 struct net_device *ndev;
2253 struct qede_dev *edev;
2255 ndev = alloc_etherdev_mqs(sizeof(*edev),
2256 info->num_queues, info->num_queues);
2258 pr_err("etherdev allocation failed\n");
2262 edev = netdev_priv(ndev);
2266 edev->dp_module = dp_module;
2267 edev->dp_level = dp_level;
2268 edev->ops = qed_ops;
2269 edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
2270 edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
2272 DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
2273 info->num_queues, info->num_queues);
2275 SET_NETDEV_DEV(ndev, &pdev->dev);
2277 memset(&edev->stats, 0, sizeof(edev->stats));
2278 memcpy(&edev->dev_info, info, sizeof(*info));
2280 edev->num_tc = edev->dev_info.num_tc;
2282 INIT_LIST_HEAD(&edev->vlan_list);
2287 static void qede_init_ndev(struct qede_dev *edev)
2289 struct net_device *ndev = edev->ndev;
2290 struct pci_dev *pdev = edev->pdev;
2293 pci_set_drvdata(pdev, ndev);
2295 ndev->mem_start = edev->dev_info.common.pci_mem_start;
2296 ndev->base_addr = ndev->mem_start;
2297 ndev->mem_end = edev->dev_info.common.pci_mem_end;
2298 ndev->irq = edev->dev_info.common.pci_irq;
2300 ndev->watchdog_timeo = TX_TIMEOUT;
2302 ndev->netdev_ops = &qede_netdev_ops;
2304 qede_set_ethtool_ops(ndev);
2306 /* user-changeble features */
2307 hw_features = NETIF_F_GRO | NETIF_F_SG |
2308 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2309 NETIF_F_TSO | NETIF_F_TSO6;
2312 hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL |
2314 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2315 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO_ECN |
2316 NETIF_F_TSO6 | NETIF_F_GSO_GRE |
2317 NETIF_F_GSO_UDP_TUNNEL | NETIF_F_RXCSUM;
2319 ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
2321 ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
2322 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
2323 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
2325 ndev->hw_features = hw_features;
2327 /* Set network device HW mac */
2328 ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
2331 /* This function converts from 32b param to two params of level and module
2332 * Input 32b decoding:
2333 * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
2334 * 'happy' flow, e.g. memory allocation failed.
2335 * b30 - enable all INFO prints. INFO prints are for major steps in the flow
2336 * and provide important parameters.
2337 * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
2338 * module. VERBOSE prints are for tracking the specific flow in low level.
2340 * Notice that the level should be that of the lowest required logs.
2342 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
2344 *p_dp_level = QED_LEVEL_NOTICE;
2347 if (debug & QED_LOG_VERBOSE_MASK) {
2348 *p_dp_level = QED_LEVEL_VERBOSE;
2349 *p_dp_module = (debug & 0x3FFFFFFF);
2350 } else if (debug & QED_LOG_INFO_MASK) {
2351 *p_dp_level = QED_LEVEL_INFO;
2352 } else if (debug & QED_LOG_NOTICE_MASK) {
2353 *p_dp_level = QED_LEVEL_NOTICE;
2357 static void qede_free_fp_array(struct qede_dev *edev)
2359 if (edev->fp_array) {
2360 struct qede_fastpath *fp;
2364 fp = &edev->fp_array[i];
2370 kfree(edev->fp_array);
2373 edev->num_queues = 0;
2374 edev->fp_num_tx = 0;
2375 edev->fp_num_rx = 0;
2378 static int qede_alloc_fp_array(struct qede_dev *edev)
2380 u8 fp_combined, fp_rx = edev->fp_num_rx;
2381 struct qede_fastpath *fp;
2384 edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
2385 sizeof(*edev->fp_array), GFP_KERNEL);
2386 if (!edev->fp_array) {
2387 DP_NOTICE(edev, "fp array allocation failed\n");
2391 fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
2393 /* Allocate the FP elements for Rx queues followed by combined and then
2394 * the Tx. This ordering should be maintained so that the respective
2395 * queues (Rx or Tx) will be together in the fastpath array and the
2396 * associated ids will be sequential.
2399 fp = &edev->fp_array[i];
2401 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2403 DP_NOTICE(edev, "sb info struct allocation failed\n");
2408 fp->type = QEDE_FASTPATH_RX;
2410 } else if (fp_combined) {
2411 fp->type = QEDE_FASTPATH_COMBINED;
2414 fp->type = QEDE_FASTPATH_TX;
2417 if (fp->type & QEDE_FASTPATH_TX) {
2418 fp->txqs = kcalloc(edev->num_tc, sizeof(*fp->txqs),
2422 "TXQ array allocation failed\n");
2427 if (fp->type & QEDE_FASTPATH_RX) {
2428 fp->rxq = kcalloc(1, sizeof(*fp->rxq), GFP_KERNEL);
2431 "RXQ struct allocation failed\n");
2439 qede_free_fp_array(edev);
2443 static void qede_sp_task(struct work_struct *work)
2445 struct qede_dev *edev = container_of(work, struct qede_dev,
2447 struct qed_dev *cdev = edev->cdev;
2449 mutex_lock(&edev->qede_lock);
2451 if (edev->state == QEDE_STATE_OPEN) {
2452 if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
2453 qede_config_rx_mode(edev->ndev);
2456 if (test_and_clear_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags)) {
2457 struct qed_tunn_params tunn_params;
2459 memset(&tunn_params, 0, sizeof(tunn_params));
2460 tunn_params.update_vxlan_port = 1;
2461 tunn_params.vxlan_port = edev->vxlan_dst_port;
2462 qed_ops->tunn_config(cdev, &tunn_params);
2465 if (test_and_clear_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags)) {
2466 struct qed_tunn_params tunn_params;
2468 memset(&tunn_params, 0, sizeof(tunn_params));
2469 tunn_params.update_geneve_port = 1;
2470 tunn_params.geneve_port = edev->geneve_dst_port;
2471 qed_ops->tunn_config(cdev, &tunn_params);
2474 mutex_unlock(&edev->qede_lock);
2477 static void qede_update_pf_params(struct qed_dev *cdev)
2479 struct qed_pf_params pf_params;
2482 memset(&pf_params, 0, sizeof(struct qed_pf_params));
2483 pf_params.eth_pf_params.num_cons = 128;
2484 qed_ops->common->update_pf_params(cdev, &pf_params);
2487 enum qede_probe_mode {
2491 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
2492 bool is_vf, enum qede_probe_mode mode)
2494 struct qed_probe_params probe_params;
2495 struct qed_slowpath_params sp_params;
2496 struct qed_dev_eth_info dev_info;
2497 struct qede_dev *edev;
2498 struct qed_dev *cdev;
2501 if (unlikely(dp_level & QED_LEVEL_INFO))
2502 pr_notice("Starting qede probe\n");
2504 memset(&probe_params, 0, sizeof(probe_params));
2505 probe_params.protocol = QED_PROTOCOL_ETH;
2506 probe_params.dp_module = dp_module;
2507 probe_params.dp_level = dp_level;
2508 probe_params.is_vf = is_vf;
2509 cdev = qed_ops->common->probe(pdev, &probe_params);
2515 qede_update_pf_params(cdev);
2517 /* Start the Slowpath-process */
2518 memset(&sp_params, 0, sizeof(sp_params));
2519 sp_params.int_mode = QED_INT_MODE_MSIX;
2520 sp_params.drv_major = QEDE_MAJOR_VERSION;
2521 sp_params.drv_minor = QEDE_MINOR_VERSION;
2522 sp_params.drv_rev = QEDE_REVISION_VERSION;
2523 sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
2524 strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
2525 rc = qed_ops->common->slowpath_start(cdev, &sp_params);
2527 pr_notice("Cannot start slowpath\n");
2531 /* Learn information crucial for qede to progress */
2532 rc = qed_ops->fill_dev_info(cdev, &dev_info);
2536 edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
2544 edev->flags |= QEDE_FLAG_IS_VF;
2546 qede_init_ndev(edev);
2548 rc = register_netdev(edev->ndev);
2550 DP_NOTICE(edev, "Cannot register net-device\n");
2554 edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
2556 edev->ops->register_ops(cdev, &qede_ll_ops, edev);
2560 qede_set_dcbnl_ops(edev->ndev);
2563 INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
2564 mutex_init(&edev->qede_lock);
2565 edev->rx_copybreak = QEDE_RX_HDR_SIZE;
2567 DP_INFO(edev, "Ending successfully qede probe\n");
2572 free_netdev(edev->ndev);
2574 qed_ops->common->slowpath_stop(cdev);
2576 qed_ops->common->remove(cdev);
2581 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2587 switch ((enum qede_pci_private)id->driver_data) {
2588 case QEDE_PRIVATE_VF:
2589 if (debug & QED_LOG_VERBOSE_MASK)
2590 dev_err(&pdev->dev, "Probing a VF\n");
2594 if (debug & QED_LOG_VERBOSE_MASK)
2595 dev_err(&pdev->dev, "Probing a PF\n");
2598 qede_config_debug(debug, &dp_module, &dp_level);
2600 return __qede_probe(pdev, dp_module, dp_level, is_vf,
2604 enum qede_remove_mode {
2608 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
2610 struct net_device *ndev = pci_get_drvdata(pdev);
2611 struct qede_dev *edev = netdev_priv(ndev);
2612 struct qed_dev *cdev = edev->cdev;
2614 DP_INFO(edev, "Starting qede_remove\n");
2616 cancel_delayed_work_sync(&edev->sp_task);
2617 unregister_netdev(ndev);
2619 edev->ops->common->set_power_state(cdev, PCI_D0);
2621 pci_set_drvdata(pdev, NULL);
2625 /* Use global ops since we've freed edev */
2626 qed_ops->common->slowpath_stop(cdev);
2627 qed_ops->common->remove(cdev);
2629 dev_info(&pdev->dev, "Ending qede_remove successfully\n");
2632 static void qede_remove(struct pci_dev *pdev)
2634 __qede_remove(pdev, QEDE_REMOVE_NORMAL);
2637 /* -------------------------------------------------------------------------
2638 * START OF LOAD / UNLOAD
2639 * -------------------------------------------------------------------------
2642 static int qede_set_num_queues(struct qede_dev *edev)
2647 /* Setup queues according to possible resources*/
2648 if (edev->req_queues)
2649 rss_num = edev->req_queues;
2651 rss_num = netif_get_num_default_rss_queues() *
2652 edev->dev_info.common.num_hwfns;
2654 rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
2656 rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
2658 /* Managed to request interrupts for our queues */
2659 edev->num_queues = rc;
2660 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
2661 QEDE_QUEUE_CNT(edev), rss_num);
2665 edev->fp_num_tx = edev->req_num_tx;
2666 edev->fp_num_rx = edev->req_num_rx;
2671 static void qede_free_mem_sb(struct qede_dev *edev,
2672 struct qed_sb_info *sb_info)
2674 if (sb_info->sb_virt)
2675 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
2676 (void *)sb_info->sb_virt, sb_info->sb_phys);
2679 /* This function allocates fast-path status block memory */
2680 static int qede_alloc_mem_sb(struct qede_dev *edev,
2681 struct qed_sb_info *sb_info, u16 sb_id)
2683 struct status_block *sb_virt;
2687 sb_virt = dma_alloc_coherent(&edev->pdev->dev,
2688 sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
2690 DP_ERR(edev, "Status block allocation failed\n");
2694 rc = edev->ops->common->sb_init(edev->cdev, sb_info,
2695 sb_virt, sb_phys, sb_id,
2696 QED_SB_TYPE_L2_QUEUE);
2698 DP_ERR(edev, "Status block initialization failed\n");
2699 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
2707 static void qede_free_rx_buffers(struct qede_dev *edev,
2708 struct qede_rx_queue *rxq)
2712 for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
2713 struct sw_rx_data *rx_buf;
2716 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
2717 data = rx_buf->data;
2719 dma_unmap_page(&edev->pdev->dev,
2720 rx_buf->mapping, PAGE_SIZE, DMA_FROM_DEVICE);
2722 rx_buf->data = NULL;
2727 static void qede_free_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
2731 if (edev->gro_disable)
2734 for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
2735 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
2736 struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
2738 if (replace_buf->data) {
2739 dma_unmap_page(&edev->pdev->dev,
2740 replace_buf->mapping,
2741 PAGE_SIZE, DMA_FROM_DEVICE);
2742 __free_page(replace_buf->data);
2747 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
2749 qede_free_sge_mem(edev, rxq);
2751 /* Free rx buffers */
2752 qede_free_rx_buffers(edev, rxq);
2754 /* Free the parallel SW ring */
2755 kfree(rxq->sw_rx_ring);
2757 /* Free the real RQ ring used by FW */
2758 edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
2759 edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
2762 static int qede_alloc_rx_buffer(struct qede_dev *edev,
2763 struct qede_rx_queue *rxq)
2765 struct sw_rx_data *sw_rx_data;
2766 struct eth_rx_bd *rx_bd;
2770 data = alloc_pages(GFP_ATOMIC, 0);
2771 if (unlikely(!data)) {
2772 DP_NOTICE(edev, "Failed to allocate Rx data [page]\n");
2776 /* Map the entire page as it would be used
2777 * for multiple RX buffer segment size mapping.
2779 mapping = dma_map_page(&edev->pdev->dev, data, 0,
2780 PAGE_SIZE, DMA_FROM_DEVICE);
2781 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
2783 DP_NOTICE(edev, "Failed to map Rx buffer\n");
2787 sw_rx_data = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
2788 sw_rx_data->page_offset = 0;
2789 sw_rx_data->data = data;
2790 sw_rx_data->mapping = mapping;
2792 /* Advance PROD and get BD pointer */
2793 rx_bd = (struct eth_rx_bd *)qed_chain_produce(&rxq->rx_bd_ring);
2795 rx_bd->addr.hi = cpu_to_le32(upper_32_bits(mapping));
2796 rx_bd->addr.lo = cpu_to_le32(lower_32_bits(mapping));
2803 static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
2808 if (edev->gro_disable)
2811 if (edev->ndev->mtu > PAGE_SIZE) {
2812 edev->gro_disable = 1;
2816 for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
2817 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
2818 struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
2820 replace_buf->data = alloc_pages(GFP_ATOMIC, 0);
2821 if (unlikely(!replace_buf->data)) {
2823 "Failed to allocate TPA skb pool [replacement buffer]\n");
2827 mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0,
2828 rxq->rx_buf_size, DMA_FROM_DEVICE);
2829 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
2831 "Failed to map TPA replacement buffer\n");
2835 replace_buf->mapping = mapping;
2836 tpa_info->replace_buf.page_offset = 0;
2838 tpa_info->replace_buf_mapping = mapping;
2839 tpa_info->agg_state = QEDE_AGG_STATE_NONE;
2844 qede_free_sge_mem(edev, rxq);
2845 edev->gro_disable = 1;
2849 /* This function allocates all memory needed per Rx queue */
2850 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
2854 rxq->num_rx_buffers = edev->q_num_rx_buffers;
2856 rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
2858 if (rxq->rx_buf_size > PAGE_SIZE)
2859 rxq->rx_buf_size = PAGE_SIZE;
2861 /* Segment size to spilt a page in multiple equal parts */
2862 rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size);
2864 /* Allocate the parallel driver ring for Rx buffers */
2865 size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
2866 rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
2867 if (!rxq->sw_rx_ring) {
2868 DP_ERR(edev, "Rx buffers ring allocation failed\n");
2873 /* Allocate FW Rx ring */
2874 rc = edev->ops->common->chain_alloc(edev->cdev,
2875 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
2876 QED_CHAIN_MODE_NEXT_PTR,
2877 QED_CHAIN_CNT_TYPE_U16,
2879 sizeof(struct eth_rx_bd),
2885 /* Allocate FW completion ring */
2886 rc = edev->ops->common->chain_alloc(edev->cdev,
2887 QED_CHAIN_USE_TO_CONSUME,
2889 QED_CHAIN_CNT_TYPE_U16,
2891 sizeof(union eth_rx_cqe),
2892 &rxq->rx_comp_ring);
2896 /* Allocate buffers for the Rx ring */
2897 for (i = 0; i < rxq->num_rx_buffers; i++) {
2898 rc = qede_alloc_rx_buffer(edev, rxq);
2901 "Rx buffers allocation failed at index %d\n", i);
2906 rc = qede_alloc_sge_mem(edev, rxq);
2911 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
2913 /* Free the parallel SW ring */
2914 kfree(txq->sw_tx_ring);
2916 /* Free the real RQ ring used by FW */
2917 edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
2920 /* This function allocates all memory needed per Tx queue */
2921 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
2924 union eth_tx_bd_types *p_virt;
2926 txq->num_tx_buffers = edev->q_num_tx_buffers;
2928 /* Allocate the parallel driver ring for Tx buffers */
2929 size = sizeof(*txq->sw_tx_ring) * NUM_TX_BDS_MAX;
2930 txq->sw_tx_ring = kzalloc(size, GFP_KERNEL);
2931 if (!txq->sw_tx_ring) {
2932 DP_NOTICE(edev, "Tx buffers ring allocation failed\n");
2936 rc = edev->ops->common->chain_alloc(edev->cdev,
2937 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
2939 QED_CHAIN_CNT_TYPE_U16,
2941 sizeof(*p_virt), &txq->tx_pbl);
2948 qede_free_mem_txq(edev, txq);
2952 /* This function frees all memory of a single fp */
2953 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
2957 qede_free_mem_sb(edev, fp->sb_info);
2959 if (fp->type & QEDE_FASTPATH_RX)
2960 qede_free_mem_rxq(edev, fp->rxq);
2962 if (fp->type & QEDE_FASTPATH_TX)
2963 for (tc = 0; tc < edev->num_tc; tc++)
2964 qede_free_mem_txq(edev, &fp->txqs[tc]);
2967 /* This function allocates all memory needed for a single fp (i.e. an entity
2968 * which contains status block, one rx queue and/or multiple per-TC tx queues.
2970 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
2974 rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
2978 if (fp->type & QEDE_FASTPATH_RX) {
2979 rc = qede_alloc_mem_rxq(edev, fp->rxq);
2984 if (fp->type & QEDE_FASTPATH_TX) {
2985 for (tc = 0; tc < edev->num_tc; tc++) {
2986 rc = qede_alloc_mem_txq(edev, &fp->txqs[tc]);
2997 static void qede_free_mem_load(struct qede_dev *edev)
3002 struct qede_fastpath *fp = &edev->fp_array[i];
3004 qede_free_mem_fp(edev, fp);
3008 /* This function allocates all qede memory at NIC load. */
3009 static int qede_alloc_mem_load(struct qede_dev *edev)
3011 int rc = 0, queue_id;
3013 for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
3014 struct qede_fastpath *fp = &edev->fp_array[queue_id];
3016 rc = qede_alloc_mem_fp(edev, fp);
3019 "Failed to allocate memory for fastpath - rss id = %d\n",
3021 qede_free_mem_load(edev);
3029 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
3030 static void qede_init_fp(struct qede_dev *edev)
3032 int queue_id, rxq_index = 0, txq_index = 0, tc;
3033 struct qede_fastpath *fp;
3035 for_each_queue(queue_id) {
3036 fp = &edev->fp_array[queue_id];
3041 memset((void *)&fp->napi, 0, sizeof(fp->napi));
3043 memset((void *)fp->sb_info, 0, sizeof(*fp->sb_info));
3045 if (fp->type & QEDE_FASTPATH_RX) {
3046 memset((void *)fp->rxq, 0, sizeof(*fp->rxq));
3047 fp->rxq->rxq_id = rxq_index++;
3050 if (fp->type & QEDE_FASTPATH_TX) {
3051 memset((void *)fp->txqs, 0,
3052 (edev->num_tc * sizeof(*fp->txqs)));
3053 for (tc = 0; tc < edev->num_tc; tc++) {
3054 fp->txqs[tc].index = txq_index +
3055 tc * QEDE_TSS_COUNT(edev);
3056 if (edev->dev_info.is_legacy)
3057 fp->txqs[tc].is_legacy = true;
3062 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
3063 edev->ndev->name, queue_id);
3066 edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO);
3069 static int qede_set_real_num_queues(struct qede_dev *edev)
3073 rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_COUNT(edev));
3075 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
3079 rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
3081 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
3088 static void qede_napi_disable_remove(struct qede_dev *edev)
3093 napi_disable(&edev->fp_array[i].napi);
3095 netif_napi_del(&edev->fp_array[i].napi);
3099 static void qede_napi_add_enable(struct qede_dev *edev)
3103 /* Add NAPI objects */
3105 netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
3106 qede_poll, NAPI_POLL_WEIGHT);
3107 napi_enable(&edev->fp_array[i].napi);
3111 static void qede_sync_free_irqs(struct qede_dev *edev)
3115 for (i = 0; i < edev->int_info.used_cnt; i++) {
3116 if (edev->int_info.msix_cnt) {
3117 synchronize_irq(edev->int_info.msix[i].vector);
3118 free_irq(edev->int_info.msix[i].vector,
3119 &edev->fp_array[i]);
3121 edev->ops->common->simd_handler_clean(edev->cdev, i);
3125 edev->int_info.used_cnt = 0;
3128 static int qede_req_msix_irqs(struct qede_dev *edev)
3132 /* Sanitize number of interrupts == number of prepared RSS queues */
3133 if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
3135 "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
3136 QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
3140 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
3141 rc = request_irq(edev->int_info.msix[i].vector,
3142 qede_msix_fp_int, 0, edev->fp_array[i].name,
3143 &edev->fp_array[i]);
3145 DP_ERR(edev, "Request fp %d irq failed\n", i);
3146 qede_sync_free_irqs(edev);
3149 DP_VERBOSE(edev, NETIF_MSG_INTR,
3150 "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
3151 edev->fp_array[i].name, i,
3152 &edev->fp_array[i]);
3153 edev->int_info.used_cnt++;
3159 static void qede_simd_fp_handler(void *cookie)
3161 struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
3163 napi_schedule_irqoff(&fp->napi);
3166 static int qede_setup_irqs(struct qede_dev *edev)
3170 /* Learn Interrupt configuration */
3171 rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
3175 if (edev->int_info.msix_cnt) {
3176 rc = qede_req_msix_irqs(edev);
3179 edev->ndev->irq = edev->int_info.msix[0].vector;
3181 const struct qed_common_ops *ops;
3183 /* qed should learn receive the RSS ids and callbacks */
3184 ops = edev->ops->common;
3185 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
3186 ops->simd_handler_config(edev->cdev,
3187 &edev->fp_array[i], i,
3188 qede_simd_fp_handler);
3189 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
3194 static int qede_drain_txq(struct qede_dev *edev,
3195 struct qede_tx_queue *txq, bool allow_drain)
3199 while (txq->sw_tx_cons != txq->sw_tx_prod) {
3203 "Tx queue[%d] is stuck, requesting MCP to drain\n",
3205 rc = edev->ops->common->drain(edev->cdev);
3208 return qede_drain_txq(edev, txq, false);
3211 "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
3212 txq->index, txq->sw_tx_prod,
3217 usleep_range(1000, 2000);
3221 /* FW finished processing, wait for HW to transmit all tx packets */
3222 usleep_range(1000, 2000);
3227 static int qede_stop_queues(struct qede_dev *edev)
3229 struct qed_update_vport_params vport_update_params;
3230 struct qed_dev *cdev = edev->cdev;
3233 /* Disable the vport */
3234 memset(&vport_update_params, 0, sizeof(vport_update_params));
3235 vport_update_params.vport_id = 0;
3236 vport_update_params.update_vport_active_flg = 1;
3237 vport_update_params.vport_active_flg = 0;
3238 vport_update_params.update_rss_flg = 0;
3240 rc = edev->ops->vport_update(cdev, &vport_update_params);
3242 DP_ERR(edev, "Failed to update vport\n");
3246 /* Flush Tx queues. If needed, request drain from MCP */
3248 struct qede_fastpath *fp = &edev->fp_array[i];
3250 if (fp->type & QEDE_FASTPATH_TX) {
3251 for (tc = 0; tc < edev->num_tc; tc++) {
3252 struct qede_tx_queue *txq = &fp->txqs[tc];
3254 rc = qede_drain_txq(edev, txq, true);
3261 /* Stop all Queues in reverse order */
3262 for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
3263 struct qed_stop_rxq_params rx_params;
3265 /* Stop the Tx Queue(s) */
3266 if (edev->fp_array[i].type & QEDE_FASTPATH_TX) {
3267 for (tc = 0; tc < edev->num_tc; tc++) {
3268 struct qed_stop_txq_params tx_params;
3271 tx_params.rss_id = i;
3272 val = edev->fp_array[i].txqs[tc].index;
3273 tx_params.tx_queue_id = val;
3274 rc = edev->ops->q_tx_stop(cdev, &tx_params);
3276 DP_ERR(edev, "Failed to stop TXQ #%d\n",
3277 tx_params.tx_queue_id);
3283 /* Stop the Rx Queue */
3284 if (edev->fp_array[i].type & QEDE_FASTPATH_RX) {
3285 memset(&rx_params, 0, sizeof(rx_params));
3286 rx_params.rss_id = i;
3287 rx_params.rx_queue_id = edev->fp_array[i].rxq->rxq_id;
3289 rc = edev->ops->q_rx_stop(cdev, &rx_params);
3291 DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
3297 /* Stop the vport */
3298 rc = edev->ops->vport_stop(cdev, 0);
3300 DP_ERR(edev, "Failed to stop VPORT\n");
3305 static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
3308 int vlan_removal_en = 1;
3309 struct qed_dev *cdev = edev->cdev;
3310 struct qed_update_vport_params vport_update_params;
3311 struct qed_queue_start_common_params q_params;
3312 struct qed_dev_info *qed_info = &edev->dev_info.common;
3313 struct qed_start_vport_params start = {0};
3314 bool reset_rss_indir = false;
3316 if (!edev->num_queues) {
3318 "Cannot update V-VPORT as active as there are no Rx queues\n");
3322 start.gro_enable = !edev->gro_disable;
3323 start.mtu = edev->ndev->mtu;
3325 start.drop_ttl0 = true;
3326 start.remove_inner_vlan = vlan_removal_en;
3327 start.clear_stats = clear_stats;
3329 rc = edev->ops->vport_start(cdev, &start);
3332 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
3336 DP_VERBOSE(edev, NETIF_MSG_IFUP,
3337 "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
3338 start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
3341 struct qede_fastpath *fp = &edev->fp_array[i];
3342 dma_addr_t p_phys_table;
3345 if (fp->type & QEDE_FASTPATH_RX) {
3346 struct qede_rx_queue *rxq = fp->rxq;
3349 memset(&q_params, 0, sizeof(q_params));
3350 q_params.rss_id = i;
3351 q_params.queue_id = rxq->rxq_id;
3352 q_params.vport_id = 0;
3353 q_params.sb = fp->sb_info->igu_sb_id;
3354 q_params.sb_idx = RX_PI;
3357 qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
3358 page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
3360 rc = edev->ops->q_rx_start(cdev, &q_params,
3362 rxq->rx_bd_ring.p_phys_addr,
3365 &rxq->hw_rxq_prod_addr);
3367 DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
3372 val = &fp->sb_info->sb_virt->pi_array[RX_PI];
3373 rxq->hw_cons_ptr = val;
3375 qede_update_rx_prod(edev, rxq);
3378 if (!(fp->type & QEDE_FASTPATH_TX))
3381 for (tc = 0; tc < edev->num_tc; tc++) {
3382 struct qede_tx_queue *txq = &fp->txqs[tc];
3384 p_phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
3385 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
3387 memset(&q_params, 0, sizeof(q_params));
3388 q_params.rss_id = i;
3389 q_params.queue_id = txq->index;
3390 q_params.vport_id = 0;
3391 q_params.sb = fp->sb_info->igu_sb_id;
3392 q_params.sb_idx = TX_PI(tc);
3394 rc = edev->ops->q_tx_start(cdev, &q_params,
3395 p_phys_table, page_cnt,
3396 &txq->doorbell_addr);
3398 DP_ERR(edev, "Start TXQ #%d failed %d\n",
3404 &fp->sb_info->sb_virt->pi_array[TX_PI(tc)];
3405 SET_FIELD(txq->tx_db.data.params,
3406 ETH_DB_DATA_DEST, DB_DEST_XCM);
3407 SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD,
3409 SET_FIELD(txq->tx_db.data.params,
3410 ETH_DB_DATA_AGG_VAL_SEL,
3411 DQ_XCM_ETH_TX_BD_PROD_CMD);
3413 txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
3417 /* Prepare and send the vport enable */
3418 memset(&vport_update_params, 0, sizeof(vport_update_params));
3419 vport_update_params.vport_id = start.vport_id;
3420 vport_update_params.update_vport_active_flg = 1;
3421 vport_update_params.vport_active_flg = 1;
3423 if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
3424 qed_info->tx_switching) {
3425 vport_update_params.update_tx_switching_flg = 1;
3426 vport_update_params.tx_switching_flg = 1;
3429 /* Fill struct with RSS params */
3430 if (QEDE_RSS_COUNT(edev) > 1) {
3431 vport_update_params.update_rss_flg = 1;
3433 /* Need to validate current RSS config uses valid entries */
3434 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
3435 if (edev->rss_params.rss_ind_table[i] >=
3436 QEDE_RSS_COUNT(edev)) {
3437 reset_rss_indir = true;
3442 if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) ||
3446 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
3449 val = QEDE_RSS_COUNT(edev);
3450 indir_val = ethtool_rxfh_indir_default(i, val);
3451 edev->rss_params.rss_ind_table[i] = indir_val;
3453 edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
3456 if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) {
3457 netdev_rss_key_fill(edev->rss_params.rss_key,
3458 sizeof(edev->rss_params.rss_key));
3459 edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
3462 if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) {
3463 edev->rss_params.rss_caps = QED_RSS_IPV4 |
3467 edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
3470 memcpy(&vport_update_params.rss_params, &edev->rss_params,
3471 sizeof(vport_update_params.rss_params));
3473 memset(&vport_update_params.rss_params, 0,
3474 sizeof(vport_update_params.rss_params));
3477 rc = edev->ops->vport_update(cdev, &vport_update_params);
3479 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
3486 static int qede_set_mcast_rx_mac(struct qede_dev *edev,
3487 enum qed_filter_xcast_params_type opcode,
3488 unsigned char *mac, int num_macs)
3490 struct qed_filter_params filter_cmd;
3493 memset(&filter_cmd, 0, sizeof(filter_cmd));
3494 filter_cmd.type = QED_FILTER_TYPE_MCAST;
3495 filter_cmd.filter.mcast.type = opcode;
3496 filter_cmd.filter.mcast.num = num_macs;
3498 for (i = 0; i < num_macs; i++, mac += ETH_ALEN)
3499 ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac);
3501 return edev->ops->filter_config(edev->cdev, &filter_cmd);
3504 enum qede_unload_mode {
3508 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
3510 struct qed_link_params link_params;
3513 DP_INFO(edev, "Starting qede unload\n");
3515 mutex_lock(&edev->qede_lock);
3516 edev->state = QEDE_STATE_CLOSED;
3519 netif_tx_disable(edev->ndev);
3520 netif_carrier_off(edev->ndev);
3522 /* Reset the link */
3523 memset(&link_params, 0, sizeof(link_params));
3524 link_params.link_up = false;
3525 edev->ops->common->set_link(edev->cdev, &link_params);
3526 rc = qede_stop_queues(edev);
3528 qede_sync_free_irqs(edev);
3532 DP_INFO(edev, "Stopped Queues\n");
3534 qede_vlan_mark_nonconfigured(edev);
3535 edev->ops->fastpath_stop(edev->cdev);
3537 /* Release the interrupts */
3538 qede_sync_free_irqs(edev);
3539 edev->ops->common->set_fp_int(edev->cdev, 0);
3541 qede_napi_disable_remove(edev);
3543 qede_free_mem_load(edev);
3544 qede_free_fp_array(edev);
3547 mutex_unlock(&edev->qede_lock);
3548 DP_INFO(edev, "Ending qede unload\n");
3551 enum qede_load_mode {
3556 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
3558 struct qed_link_params link_params;
3559 struct qed_link_output link_output;
3562 DP_INFO(edev, "Starting qede load\n");
3564 rc = qede_set_num_queues(edev);
3568 rc = qede_alloc_fp_array(edev);
3574 rc = qede_alloc_mem_load(edev);
3577 DP_INFO(edev, "Allocated %d RSS queues on %d TC/s\n",
3578 QEDE_QUEUE_CNT(edev), edev->num_tc);
3580 rc = qede_set_real_num_queues(edev);
3584 qede_napi_add_enable(edev);
3585 DP_INFO(edev, "Napi added and enabled\n");
3587 rc = qede_setup_irqs(edev);
3590 DP_INFO(edev, "Setup IRQs succeeded\n");
3592 rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
3595 DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
3597 /* Add primary mac and set Rx filters */
3598 ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr);
3600 mutex_lock(&edev->qede_lock);
3601 edev->state = QEDE_STATE_OPEN;
3602 mutex_unlock(&edev->qede_lock);
3604 /* Program un-configured VLANs */
3605 qede_configure_vlan_filters(edev);
3607 /* Ask for link-up using current configuration */
3608 memset(&link_params, 0, sizeof(link_params));
3609 link_params.link_up = true;
3610 edev->ops->common->set_link(edev->cdev, &link_params);
3612 /* Query whether link is already-up */
3613 memset(&link_output, 0, sizeof(link_output));
3614 edev->ops->common->get_link(edev->cdev, &link_output);
3615 qede_link_update(edev, &link_output);
3617 DP_INFO(edev, "Ending successfully qede load\n");
3622 qede_sync_free_irqs(edev);
3623 memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
3625 qede_napi_disable_remove(edev);
3627 qede_free_mem_load(edev);
3629 edev->ops->common->set_fp_int(edev->cdev, 0);
3630 qede_free_fp_array(edev);
3631 edev->num_queues = 0;
3632 edev->fp_num_tx = 0;
3633 edev->fp_num_rx = 0;
3638 void qede_reload(struct qede_dev *edev,
3639 void (*func)(struct qede_dev *, union qede_reload_args *),
3640 union qede_reload_args *args)
3642 qede_unload(edev, QEDE_UNLOAD_NORMAL);
3643 /* Call function handler to update parameters
3644 * needed for function load.
3649 qede_load(edev, QEDE_LOAD_RELOAD);
3651 mutex_lock(&edev->qede_lock);
3652 qede_config_rx_mode(edev->ndev);
3653 mutex_unlock(&edev->qede_lock);
3656 /* called with rtnl_lock */
3657 static int qede_open(struct net_device *ndev)
3659 struct qede_dev *edev = netdev_priv(ndev);
3662 netif_carrier_off(ndev);
3664 edev->ops->common->set_power_state(edev->cdev, PCI_D0);
3666 rc = qede_load(edev, QEDE_LOAD_NORMAL);
3671 udp_tunnel_get_rx_info(ndev);
3676 static int qede_close(struct net_device *ndev)
3678 struct qede_dev *edev = netdev_priv(ndev);
3680 qede_unload(edev, QEDE_UNLOAD_NORMAL);
3685 static void qede_link_update(void *dev, struct qed_link_output *link)
3687 struct qede_dev *edev = dev;
3689 if (!netif_running(edev->ndev)) {
3690 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
3694 if (link->link_up) {
3695 if (!netif_carrier_ok(edev->ndev)) {
3696 DP_NOTICE(edev, "Link is up\n");
3697 netif_tx_start_all_queues(edev->ndev);
3698 netif_carrier_on(edev->ndev);
3701 if (netif_carrier_ok(edev->ndev)) {
3702 DP_NOTICE(edev, "Link is down\n");
3703 netif_tx_disable(edev->ndev);
3704 netif_carrier_off(edev->ndev);
3709 static int qede_set_mac_addr(struct net_device *ndev, void *p)
3711 struct qede_dev *edev = netdev_priv(ndev);
3712 struct sockaddr *addr = p;
3715 ASSERT_RTNL(); /* @@@TBD To be removed */
3717 DP_INFO(edev, "Set_mac_addr called\n");
3719 if (!is_valid_ether_addr(addr->sa_data)) {
3720 DP_NOTICE(edev, "The MAC address is not valid\n");
3724 if (!edev->ops->check_mac(edev->cdev, addr->sa_data)) {
3725 DP_NOTICE(edev, "qed prevents setting MAC\n");
3729 ether_addr_copy(ndev->dev_addr, addr->sa_data);
3731 if (!netif_running(ndev)) {
3732 DP_NOTICE(edev, "The device is currently down\n");
3736 /* Remove the previous primary mac */
3737 rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
3742 /* Add MAC filter according to the new unicast HW MAC address */
3743 ether_addr_copy(edev->primary_mac, ndev->dev_addr);
3744 return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
3749 qede_configure_mcast_filtering(struct net_device *ndev,
3750 enum qed_filter_rx_mode_type *accept_flags)
3752 struct qede_dev *edev = netdev_priv(ndev);
3753 unsigned char *mc_macs, *temp;
3754 struct netdev_hw_addr *ha;
3755 int rc = 0, mc_count;
3758 size = 64 * ETH_ALEN;
3760 mc_macs = kzalloc(size, GFP_KERNEL);
3763 "Failed to allocate memory for multicast MACs\n");
3770 /* Remove all previously configured MAC filters */
3771 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
3776 netif_addr_lock_bh(ndev);
3778 mc_count = netdev_mc_count(ndev);
3779 if (mc_count < 64) {
3780 netdev_for_each_mc_addr(ha, ndev) {
3781 ether_addr_copy(temp, ha->addr);
3786 netif_addr_unlock_bh(ndev);
3788 /* Check for all multicast @@@TBD resource allocation */
3789 if ((ndev->flags & IFF_ALLMULTI) ||
3791 if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR)
3792 *accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC;
3794 /* Add all multicast MAC filters */
3795 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
3804 static void qede_set_rx_mode(struct net_device *ndev)
3806 struct qede_dev *edev = netdev_priv(ndev);
3808 DP_INFO(edev, "qede_set_rx_mode called\n");
3810 if (edev->state != QEDE_STATE_OPEN) {
3812 "qede_set_rx_mode called while interface is down\n");
3814 set_bit(QEDE_SP_RX_MODE, &edev->sp_flags);
3815 schedule_delayed_work(&edev->sp_task, 0);
3819 /* Must be called with qede_lock held */
3820 static void qede_config_rx_mode(struct net_device *ndev)
3822 enum qed_filter_rx_mode_type accept_flags = QED_FILTER_TYPE_UCAST;
3823 struct qede_dev *edev = netdev_priv(ndev);
3824 struct qed_filter_params rx_mode;
3825 unsigned char *uc_macs, *temp;
3826 struct netdev_hw_addr *ha;
3830 netif_addr_lock_bh(ndev);
3832 uc_count = netdev_uc_count(ndev);
3833 size = uc_count * ETH_ALEN;
3835 uc_macs = kzalloc(size, GFP_ATOMIC);
3837 DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n");
3838 netif_addr_unlock_bh(ndev);
3843 netdev_for_each_uc_addr(ha, ndev) {
3844 ether_addr_copy(temp, ha->addr);
3848 netif_addr_unlock_bh(ndev);
3850 /* Configure the struct for the Rx mode */
3851 memset(&rx_mode, 0, sizeof(struct qed_filter_params));
3852 rx_mode.type = QED_FILTER_TYPE_RX_MODE;
3854 /* Remove all previous unicast secondary macs and multicast macs
3855 * (configrue / leave the primary mac)
3857 rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE,
3862 /* Check for promiscuous */
3863 if ((ndev->flags & IFF_PROMISC) ||
3864 (uc_count > 15)) { /* @@@TBD resource allocation - 1 */
3865 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
3867 /* Add MAC filters according to the unicast secondary macs */
3871 for (i = 0; i < uc_count; i++) {
3872 rc = qede_set_ucast_rx_mac(edev,
3873 QED_FILTER_XCAST_TYPE_ADD,
3881 rc = qede_configure_mcast_filtering(ndev, &accept_flags);
3886 /* take care of VLAN mode */
3887 if (ndev->flags & IFF_PROMISC) {
3888 qede_config_accept_any_vlan(edev, true);
3889 } else if (!edev->non_configured_vlans) {
3890 /* It's possible that accept_any_vlan mode is set due to a
3891 * previous setting of IFF_PROMISC. If vlan credits are
3892 * sufficient, disable accept_any_vlan.
3894 qede_config_accept_any_vlan(edev, false);
3897 rx_mode.filter.accept_flags = accept_flags;
3898 edev->ops->filter_config(edev->cdev, &rx_mode);