1a6a5580cSJeff Kirsher /* 2a6a5580cSJeff Kirsher * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. 3a6a5580cSJeff Kirsher * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4a6a5580cSJeff Kirsher * 5a6a5580cSJeff Kirsher * This program is free software; you may redistribute it and/or modify 6a6a5580cSJeff Kirsher * it under the terms of the GNU General Public License as published by 7a6a5580cSJeff Kirsher * the Free Software Foundation; version 2 of the License. 8a6a5580cSJeff Kirsher * 9a6a5580cSJeff Kirsher * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 10a6a5580cSJeff Kirsher * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 11a6a5580cSJeff Kirsher * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 12a6a5580cSJeff Kirsher * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 13a6a5580cSJeff Kirsher * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 14a6a5580cSJeff Kirsher * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 15a6a5580cSJeff Kirsher * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 16a6a5580cSJeff Kirsher * SOFTWARE. 17a6a5580cSJeff Kirsher * 18a6a5580cSJeff Kirsher */ 19a6a5580cSJeff Kirsher 20a6a5580cSJeff Kirsher #include <linux/module.h> 21a6a5580cSJeff Kirsher #include <linux/kernel.h> 22a6a5580cSJeff Kirsher #include <linux/string.h> 23a6a5580cSJeff Kirsher #include <linux/errno.h> 24a6a5580cSJeff Kirsher #include <linux/types.h> 25a6a5580cSJeff Kirsher #include <linux/init.h> 26a6a5580cSJeff Kirsher #include <linux/interrupt.h> 27a6a5580cSJeff Kirsher #include <linux/workqueue.h> 28a6a5580cSJeff Kirsher #include <linux/pci.h> 29a6a5580cSJeff Kirsher #include <linux/netdevice.h> 30a6a5580cSJeff Kirsher #include <linux/etherdevice.h> 3101789349SJiri Pirko #include <linux/if.h> 32a6a5580cSJeff Kirsher #include <linux/if_ether.h> 33a6a5580cSJeff Kirsher #include <linux/if_vlan.h> 34a6a5580cSJeff Kirsher #include <linux/in.h> 35a6a5580cSJeff Kirsher #include <linux/ip.h> 36a6a5580cSJeff Kirsher #include <linux/ipv6.h> 37a6a5580cSJeff Kirsher #include <linux/tcp.h> 38a6a5580cSJeff Kirsher #include <linux/rtnetlink.h> 39a6a5580cSJeff Kirsher #include <linux/prefetch.h> 40a6a5580cSJeff Kirsher #include <net/ip6_checksum.h> 41a6a5580cSJeff Kirsher 42a6a5580cSJeff Kirsher #include "cq_enet_desc.h" 43a6a5580cSJeff Kirsher #include "vnic_dev.h" 44a6a5580cSJeff Kirsher #include "vnic_intr.h" 45a6a5580cSJeff Kirsher #include "vnic_stats.h" 46a6a5580cSJeff Kirsher #include "vnic_vic.h" 47a6a5580cSJeff Kirsher #include "enic_res.h" 48a6a5580cSJeff Kirsher #include "enic.h" 49a6a5580cSJeff Kirsher #include "enic_dev.h" 50a6a5580cSJeff Kirsher #include "enic_pp.h" 51a6a5580cSJeff Kirsher 52a6a5580cSJeff Kirsher #define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) 53a6a5580cSJeff Kirsher #define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) 54a6a5580cSJeff Kirsher #define MAX_TSO (1 << 16) 55a6a5580cSJeff Kirsher #define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) 56a6a5580cSJeff Kirsher 57a6a5580cSJeff Kirsher #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ 58a6a5580cSJeff Kirsher #define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ 593a4adef5SRoopa Prabhu #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */ 60a6a5580cSJeff Kirsher 61a6a5580cSJeff Kirsher /* Supported devices */ 62a6a5580cSJeff Kirsher static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { 63a6a5580cSJeff Kirsher { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, 64a6a5580cSJeff Kirsher { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, 653a4adef5SRoopa Prabhu { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) }, 66a6a5580cSJeff Kirsher { 0, } /* end of table */ 67a6a5580cSJeff Kirsher }; 68a6a5580cSJeff Kirsher 69a6a5580cSJeff Kirsher MODULE_DESCRIPTION(DRV_DESCRIPTION); 70a6a5580cSJeff Kirsher MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>"); 71a6a5580cSJeff Kirsher MODULE_LICENSE("GPL"); 72a6a5580cSJeff Kirsher MODULE_VERSION(DRV_VERSION); 73a6a5580cSJeff Kirsher MODULE_DEVICE_TABLE(pci, enic_id_table); 74a6a5580cSJeff Kirsher 753f192795SRoopa Prabhu int enic_is_dynamic(struct enic *enic) 76a6a5580cSJeff Kirsher { 77a6a5580cSJeff Kirsher return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; 78a6a5580cSJeff Kirsher } 79a6a5580cSJeff Kirsher 808749b427SRoopa Prabhu int enic_sriov_enabled(struct enic *enic) 818749b427SRoopa Prabhu { 828749b427SRoopa Prabhu return (enic->priv_flags & ENIC_SRIOV_ENABLED) ? 1 : 0; 838749b427SRoopa Prabhu } 848749b427SRoopa Prabhu 853a4adef5SRoopa Prabhu static int enic_is_sriov_vf(struct enic *enic) 863a4adef5SRoopa Prabhu { 873a4adef5SRoopa Prabhu return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_VF; 883a4adef5SRoopa Prabhu } 893a4adef5SRoopa Prabhu 90889d13f5SRoopa Prabhu int enic_is_valid_vf(struct enic *enic, int vf) 91889d13f5SRoopa Prabhu { 92889d13f5SRoopa Prabhu #ifdef CONFIG_PCI_IOV 93889d13f5SRoopa Prabhu return vf >= 0 && vf < enic->num_vfs; 94889d13f5SRoopa Prabhu #else 95889d13f5SRoopa Prabhu return 0; 96889d13f5SRoopa Prabhu #endif 97889d13f5SRoopa Prabhu } 98889d13f5SRoopa Prabhu 99a6a5580cSJeff Kirsher static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) 100a6a5580cSJeff Kirsher { 101a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(wq->vdev); 102a6a5580cSJeff Kirsher 103a6a5580cSJeff Kirsher if (buf->sop) 104a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 105a6a5580cSJeff Kirsher buf->len, PCI_DMA_TODEVICE); 106a6a5580cSJeff Kirsher else 107a6a5580cSJeff Kirsher pci_unmap_page(enic->pdev, buf->dma_addr, 108a6a5580cSJeff Kirsher buf->len, PCI_DMA_TODEVICE); 109a6a5580cSJeff Kirsher 110a6a5580cSJeff Kirsher if (buf->os_buf) 111a6a5580cSJeff Kirsher dev_kfree_skb_any(buf->os_buf); 112a6a5580cSJeff Kirsher } 113a6a5580cSJeff Kirsher 114a6a5580cSJeff Kirsher static void enic_wq_free_buf(struct vnic_wq *wq, 115a6a5580cSJeff Kirsher struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) 116a6a5580cSJeff Kirsher { 117a6a5580cSJeff Kirsher enic_free_wq_buf(wq, buf); 118a6a5580cSJeff Kirsher } 119a6a5580cSJeff Kirsher 120a6a5580cSJeff Kirsher static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 121a6a5580cSJeff Kirsher u8 type, u16 q_number, u16 completed_index, void *opaque) 122a6a5580cSJeff Kirsher { 123a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(vdev); 124a6a5580cSJeff Kirsher 125a6a5580cSJeff Kirsher spin_lock(&enic->wq_lock[q_number]); 126a6a5580cSJeff Kirsher 127a6a5580cSJeff Kirsher vnic_wq_service(&enic->wq[q_number], cq_desc, 128a6a5580cSJeff Kirsher completed_index, enic_wq_free_buf, 129a6a5580cSJeff Kirsher opaque); 130a6a5580cSJeff Kirsher 131822473b6Sgovindarajulu.v if (netif_tx_queue_stopped(netdev_get_tx_queue(enic->netdev, q_number)) && 132a6a5580cSJeff Kirsher vnic_wq_desc_avail(&enic->wq[q_number]) >= 133a6a5580cSJeff Kirsher (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) 134822473b6Sgovindarajulu.v netif_wake_subqueue(enic->netdev, q_number); 135a6a5580cSJeff Kirsher 136a6a5580cSJeff Kirsher spin_unlock(&enic->wq_lock[q_number]); 137a6a5580cSJeff Kirsher 138a6a5580cSJeff Kirsher return 0; 139a6a5580cSJeff Kirsher } 140a6a5580cSJeff Kirsher 141a6a5580cSJeff Kirsher static void enic_log_q_error(struct enic *enic) 142a6a5580cSJeff Kirsher { 143a6a5580cSJeff Kirsher unsigned int i; 144a6a5580cSJeff Kirsher u32 error_status; 145a6a5580cSJeff Kirsher 146a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 147a6a5580cSJeff Kirsher error_status = vnic_wq_error_status(&enic->wq[i]); 148a6a5580cSJeff Kirsher if (error_status) 149a6a5580cSJeff Kirsher netdev_err(enic->netdev, "WQ[%d] error_status %d\n", 150a6a5580cSJeff Kirsher i, error_status); 151a6a5580cSJeff Kirsher } 152a6a5580cSJeff Kirsher 153a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 154a6a5580cSJeff Kirsher error_status = vnic_rq_error_status(&enic->rq[i]); 155a6a5580cSJeff Kirsher if (error_status) 156a6a5580cSJeff Kirsher netdev_err(enic->netdev, "RQ[%d] error_status %d\n", 157a6a5580cSJeff Kirsher i, error_status); 158a6a5580cSJeff Kirsher } 159a6a5580cSJeff Kirsher } 160a6a5580cSJeff Kirsher 161a6a5580cSJeff Kirsher static void enic_msglvl_check(struct enic *enic) 162a6a5580cSJeff Kirsher { 163a6a5580cSJeff Kirsher u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); 164a6a5580cSJeff Kirsher 165a6a5580cSJeff Kirsher if (msg_enable != enic->msg_enable) { 166a6a5580cSJeff Kirsher netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", 167a6a5580cSJeff Kirsher enic->msg_enable, msg_enable); 168a6a5580cSJeff Kirsher enic->msg_enable = msg_enable; 169a6a5580cSJeff Kirsher } 170a6a5580cSJeff Kirsher } 171a6a5580cSJeff Kirsher 172a6a5580cSJeff Kirsher static void enic_mtu_check(struct enic *enic) 173a6a5580cSJeff Kirsher { 174a6a5580cSJeff Kirsher u32 mtu = vnic_dev_mtu(enic->vdev); 175a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 176a6a5580cSJeff Kirsher 177a6a5580cSJeff Kirsher if (mtu && mtu != enic->port_mtu) { 178a6a5580cSJeff Kirsher enic->port_mtu = mtu; 1797335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) { 180a6a5580cSJeff Kirsher mtu = max_t(int, ENIC_MIN_MTU, 181a6a5580cSJeff Kirsher min_t(int, ENIC_MAX_MTU, mtu)); 182a6a5580cSJeff Kirsher if (mtu != netdev->mtu) 183a6a5580cSJeff Kirsher schedule_work(&enic->change_mtu_work); 184a6a5580cSJeff Kirsher } else { 185a6a5580cSJeff Kirsher if (mtu < netdev->mtu) 186a6a5580cSJeff Kirsher netdev_warn(netdev, 187a6a5580cSJeff Kirsher "interface MTU (%d) set higher " 188a6a5580cSJeff Kirsher "than switch port MTU (%d)\n", 189a6a5580cSJeff Kirsher netdev->mtu, mtu); 190a6a5580cSJeff Kirsher } 191a6a5580cSJeff Kirsher } 192a6a5580cSJeff Kirsher } 193a6a5580cSJeff Kirsher 194a6a5580cSJeff Kirsher static void enic_link_check(struct enic *enic) 195a6a5580cSJeff Kirsher { 196a6a5580cSJeff Kirsher int link_status = vnic_dev_link_status(enic->vdev); 197a6a5580cSJeff Kirsher int carrier_ok = netif_carrier_ok(enic->netdev); 198a6a5580cSJeff Kirsher 199a6a5580cSJeff Kirsher if (link_status && !carrier_ok) { 200a6a5580cSJeff Kirsher netdev_info(enic->netdev, "Link UP\n"); 201a6a5580cSJeff Kirsher netif_carrier_on(enic->netdev); 202a6a5580cSJeff Kirsher } else if (!link_status && carrier_ok) { 203a6a5580cSJeff Kirsher netdev_info(enic->netdev, "Link DOWN\n"); 204a6a5580cSJeff Kirsher netif_carrier_off(enic->netdev); 205a6a5580cSJeff Kirsher } 206a6a5580cSJeff Kirsher } 207a6a5580cSJeff Kirsher 208a6a5580cSJeff Kirsher static void enic_notify_check(struct enic *enic) 209a6a5580cSJeff Kirsher { 210a6a5580cSJeff Kirsher enic_msglvl_check(enic); 211a6a5580cSJeff Kirsher enic_mtu_check(enic); 212a6a5580cSJeff Kirsher enic_link_check(enic); 213a6a5580cSJeff Kirsher } 214a6a5580cSJeff Kirsher 215a6a5580cSJeff Kirsher #define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) 216a6a5580cSJeff Kirsher 217a6a5580cSJeff Kirsher static irqreturn_t enic_isr_legacy(int irq, void *data) 218a6a5580cSJeff Kirsher { 219a6a5580cSJeff Kirsher struct net_device *netdev = data; 220a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 221a6a5580cSJeff Kirsher unsigned int io_intr = enic_legacy_io_intr(); 222a6a5580cSJeff Kirsher unsigned int err_intr = enic_legacy_err_intr(); 223a6a5580cSJeff Kirsher unsigned int notify_intr = enic_legacy_notify_intr(); 224a6a5580cSJeff Kirsher u32 pba; 225a6a5580cSJeff Kirsher 226a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[io_intr]); 227a6a5580cSJeff Kirsher 228a6a5580cSJeff Kirsher pba = vnic_intr_legacy_pba(enic->legacy_pba); 229a6a5580cSJeff Kirsher if (!pba) { 230a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[io_intr]); 231a6a5580cSJeff Kirsher return IRQ_NONE; /* not our interrupt */ 232a6a5580cSJeff Kirsher } 233a6a5580cSJeff Kirsher 234a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, notify_intr)) { 235a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[notify_intr]); 236a6a5580cSJeff Kirsher enic_notify_check(enic); 237a6a5580cSJeff Kirsher } 238a6a5580cSJeff Kirsher 239a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, err_intr)) { 240a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[err_intr]); 241a6a5580cSJeff Kirsher enic_log_q_error(enic); 242a6a5580cSJeff Kirsher /* schedule recovery from WQ/RQ error */ 243a6a5580cSJeff Kirsher schedule_work(&enic->reset); 244a6a5580cSJeff Kirsher return IRQ_HANDLED; 245a6a5580cSJeff Kirsher } 246a6a5580cSJeff Kirsher 247a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, io_intr)) { 248a6a5580cSJeff Kirsher if (napi_schedule_prep(&enic->napi[0])) 249a6a5580cSJeff Kirsher __napi_schedule(&enic->napi[0]); 250a6a5580cSJeff Kirsher } else { 251a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[io_intr]); 252a6a5580cSJeff Kirsher } 253a6a5580cSJeff Kirsher 254a6a5580cSJeff Kirsher return IRQ_HANDLED; 255a6a5580cSJeff Kirsher } 256a6a5580cSJeff Kirsher 257a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msi(int irq, void *data) 258a6a5580cSJeff Kirsher { 259a6a5580cSJeff Kirsher struct enic *enic = data; 260a6a5580cSJeff Kirsher 261a6a5580cSJeff Kirsher /* With MSI, there is no sharing of interrupts, so this is 262a6a5580cSJeff Kirsher * our interrupt and there is no need to ack it. The device 263a6a5580cSJeff Kirsher * is not providing per-vector masking, so the OS will not 264a6a5580cSJeff Kirsher * write to PCI config space to mask/unmask the interrupt. 265a6a5580cSJeff Kirsher * We're using mask_on_assertion for MSI, so the device 266a6a5580cSJeff Kirsher * automatically masks the interrupt when the interrupt is 267a6a5580cSJeff Kirsher * generated. Later, when exiting polling, the interrupt 268a6a5580cSJeff Kirsher * will be unmasked (see enic_poll). 269a6a5580cSJeff Kirsher * 270a6a5580cSJeff Kirsher * Also, the device uses the same PCIe Traffic Class (TC) 271a6a5580cSJeff Kirsher * for Memory Write data and MSI, so there are no ordering 272a6a5580cSJeff Kirsher * issues; the MSI will always arrive at the Root Complex 273a6a5580cSJeff Kirsher * _after_ corresponding Memory Writes (i.e. descriptor 274a6a5580cSJeff Kirsher * writes). 275a6a5580cSJeff Kirsher */ 276a6a5580cSJeff Kirsher 277a6a5580cSJeff Kirsher napi_schedule(&enic->napi[0]); 278a6a5580cSJeff Kirsher 279a6a5580cSJeff Kirsher return IRQ_HANDLED; 280a6a5580cSJeff Kirsher } 281a6a5580cSJeff Kirsher 282a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_rq(int irq, void *data) 283a6a5580cSJeff Kirsher { 284a6a5580cSJeff Kirsher struct napi_struct *napi = data; 285a6a5580cSJeff Kirsher 286a6a5580cSJeff Kirsher /* schedule NAPI polling for RQ cleanup */ 287a6a5580cSJeff Kirsher napi_schedule(napi); 288a6a5580cSJeff Kirsher 289a6a5580cSJeff Kirsher return IRQ_HANDLED; 290a6a5580cSJeff Kirsher } 291a6a5580cSJeff Kirsher 292a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_wq(int irq, void *data) 293a6a5580cSJeff Kirsher { 294a6a5580cSJeff Kirsher struct enic *enic = data; 295822473b6Sgovindarajulu.v unsigned int cq; 296822473b6Sgovindarajulu.v unsigned int intr; 297a6a5580cSJeff Kirsher unsigned int wq_work_to_do = -1; /* no limit */ 298a6a5580cSJeff Kirsher unsigned int wq_work_done; 299822473b6Sgovindarajulu.v unsigned int wq_irq; 300822473b6Sgovindarajulu.v 301822473b6Sgovindarajulu.v wq_irq = (u32)irq - enic->msix_entry[enic_msix_wq_intr(enic, 0)].vector; 302822473b6Sgovindarajulu.v cq = enic_cq_wq(enic, wq_irq); 303822473b6Sgovindarajulu.v intr = enic_msix_wq_intr(enic, wq_irq); 304a6a5580cSJeff Kirsher 305a6a5580cSJeff Kirsher wq_work_done = vnic_cq_service(&enic->cq[cq], 306a6a5580cSJeff Kirsher wq_work_to_do, enic_wq_service, NULL); 307a6a5580cSJeff Kirsher 308a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 309a6a5580cSJeff Kirsher wq_work_done, 310a6a5580cSJeff Kirsher 1 /* unmask intr */, 311a6a5580cSJeff Kirsher 1 /* reset intr timer */); 312a6a5580cSJeff Kirsher 313a6a5580cSJeff Kirsher return IRQ_HANDLED; 314a6a5580cSJeff Kirsher } 315a6a5580cSJeff Kirsher 316a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_err(int irq, void *data) 317a6a5580cSJeff Kirsher { 318a6a5580cSJeff Kirsher struct enic *enic = data; 319a6a5580cSJeff Kirsher unsigned int intr = enic_msix_err_intr(enic); 320a6a5580cSJeff Kirsher 321a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[intr]); 322a6a5580cSJeff Kirsher 323a6a5580cSJeff Kirsher enic_log_q_error(enic); 324a6a5580cSJeff Kirsher 325a6a5580cSJeff Kirsher /* schedule recovery from WQ/RQ error */ 326a6a5580cSJeff Kirsher schedule_work(&enic->reset); 327a6a5580cSJeff Kirsher 328a6a5580cSJeff Kirsher return IRQ_HANDLED; 329a6a5580cSJeff Kirsher } 330a6a5580cSJeff Kirsher 331a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_notify(int irq, void *data) 332a6a5580cSJeff Kirsher { 333a6a5580cSJeff Kirsher struct enic *enic = data; 334a6a5580cSJeff Kirsher unsigned int intr = enic_msix_notify_intr(enic); 335a6a5580cSJeff Kirsher 336a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[intr]); 337a6a5580cSJeff Kirsher enic_notify_check(enic); 338a6a5580cSJeff Kirsher 339a6a5580cSJeff Kirsher return IRQ_HANDLED; 340a6a5580cSJeff Kirsher } 341a6a5580cSJeff Kirsher 342a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_cont(struct enic *enic, 343a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 344a6a5580cSJeff Kirsher unsigned int len_left, int loopback) 345a6a5580cSJeff Kirsher { 3469e903e08SEric Dumazet const skb_frag_t *frag; 347a6a5580cSJeff Kirsher 348a6a5580cSJeff Kirsher /* Queue additional data fragments */ 349a6a5580cSJeff Kirsher for (frag = skb_shinfo(skb)->frags; len_left; frag++) { 3509e903e08SEric Dumazet len_left -= skb_frag_size(frag); 351a6a5580cSJeff Kirsher enic_queue_wq_desc_cont(wq, skb, 3524bf5adbfSIan Campbell skb_frag_dma_map(&enic->pdev->dev, 3539e903e08SEric Dumazet frag, 0, skb_frag_size(frag), 3545d6bcdfeSIan Campbell DMA_TO_DEVICE), 3559e903e08SEric Dumazet skb_frag_size(frag), 356a6a5580cSJeff Kirsher (len_left == 0), /* EOP? */ 357a6a5580cSJeff Kirsher loopback); 358a6a5580cSJeff Kirsher } 359a6a5580cSJeff Kirsher } 360a6a5580cSJeff Kirsher 361a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_vlan(struct enic *enic, 362a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 363a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 364a6a5580cSJeff Kirsher { 365a6a5580cSJeff Kirsher unsigned int head_len = skb_headlen(skb); 366a6a5580cSJeff Kirsher unsigned int len_left = skb->len - head_len; 367a6a5580cSJeff Kirsher int eop = (len_left == 0); 368a6a5580cSJeff Kirsher 369a6a5580cSJeff Kirsher /* Queue the main skb fragment. The fragments are no larger 370a6a5580cSJeff Kirsher * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less 371a6a5580cSJeff Kirsher * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor 372a6a5580cSJeff Kirsher * per fragment is queued. 373a6a5580cSJeff Kirsher */ 374a6a5580cSJeff Kirsher enic_queue_wq_desc(wq, skb, 375a6a5580cSJeff Kirsher pci_map_single(enic->pdev, skb->data, 376a6a5580cSJeff Kirsher head_len, PCI_DMA_TODEVICE), 377a6a5580cSJeff Kirsher head_len, 378a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 379a6a5580cSJeff Kirsher eop, loopback); 380a6a5580cSJeff Kirsher 381a6a5580cSJeff Kirsher if (!eop) 382a6a5580cSJeff Kirsher enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); 383a6a5580cSJeff Kirsher } 384a6a5580cSJeff Kirsher 385a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, 386a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 387a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 388a6a5580cSJeff Kirsher { 389a6a5580cSJeff Kirsher unsigned int head_len = skb_headlen(skb); 390a6a5580cSJeff Kirsher unsigned int len_left = skb->len - head_len; 391a6a5580cSJeff Kirsher unsigned int hdr_len = skb_checksum_start_offset(skb); 392a6a5580cSJeff Kirsher unsigned int csum_offset = hdr_len + skb->csum_offset; 393a6a5580cSJeff Kirsher int eop = (len_left == 0); 394a6a5580cSJeff Kirsher 395a6a5580cSJeff Kirsher /* Queue the main skb fragment. The fragments are no larger 396a6a5580cSJeff Kirsher * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less 397a6a5580cSJeff Kirsher * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor 398a6a5580cSJeff Kirsher * per fragment is queued. 399a6a5580cSJeff Kirsher */ 400a6a5580cSJeff Kirsher enic_queue_wq_desc_csum_l4(wq, skb, 401a6a5580cSJeff Kirsher pci_map_single(enic->pdev, skb->data, 402a6a5580cSJeff Kirsher head_len, PCI_DMA_TODEVICE), 403a6a5580cSJeff Kirsher head_len, 404a6a5580cSJeff Kirsher csum_offset, 405a6a5580cSJeff Kirsher hdr_len, 406a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 407a6a5580cSJeff Kirsher eop, loopback); 408a6a5580cSJeff Kirsher 409a6a5580cSJeff Kirsher if (!eop) 410a6a5580cSJeff Kirsher enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); 411a6a5580cSJeff Kirsher } 412a6a5580cSJeff Kirsher 413a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_tso(struct enic *enic, 414a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, 415a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 416a6a5580cSJeff Kirsher { 417a6a5580cSJeff Kirsher unsigned int frag_len_left = skb_headlen(skb); 418a6a5580cSJeff Kirsher unsigned int len_left = skb->len - frag_len_left; 419a6a5580cSJeff Kirsher unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 420a6a5580cSJeff Kirsher int eop = (len_left == 0); 421a6a5580cSJeff Kirsher unsigned int len; 422a6a5580cSJeff Kirsher dma_addr_t dma_addr; 423a6a5580cSJeff Kirsher unsigned int offset = 0; 424a6a5580cSJeff Kirsher skb_frag_t *frag; 425a6a5580cSJeff Kirsher 426a6a5580cSJeff Kirsher /* Preload TCP csum field with IP pseudo hdr calculated 427a6a5580cSJeff Kirsher * with IP length set to zero. HW will later add in length 428a6a5580cSJeff Kirsher * to each TCP segment resulting from the TSO. 429a6a5580cSJeff Kirsher */ 430a6a5580cSJeff Kirsher 431a6a5580cSJeff Kirsher if (skb->protocol == cpu_to_be16(ETH_P_IP)) { 432a6a5580cSJeff Kirsher ip_hdr(skb)->check = 0; 433a6a5580cSJeff Kirsher tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, 434a6a5580cSJeff Kirsher ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); 435a6a5580cSJeff Kirsher } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { 436a6a5580cSJeff Kirsher tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 437a6a5580cSJeff Kirsher &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); 438a6a5580cSJeff Kirsher } 439a6a5580cSJeff Kirsher 440a6a5580cSJeff Kirsher /* Queue WQ_ENET_MAX_DESC_LEN length descriptors 441a6a5580cSJeff Kirsher * for the main skb fragment 442a6a5580cSJeff Kirsher */ 443a6a5580cSJeff Kirsher while (frag_len_left) { 444a6a5580cSJeff Kirsher len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); 445a6a5580cSJeff Kirsher dma_addr = pci_map_single(enic->pdev, skb->data + offset, 446a6a5580cSJeff Kirsher len, PCI_DMA_TODEVICE); 447a6a5580cSJeff Kirsher enic_queue_wq_desc_tso(wq, skb, 448a6a5580cSJeff Kirsher dma_addr, 449a6a5580cSJeff Kirsher len, 450a6a5580cSJeff Kirsher mss, hdr_len, 451a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 452a6a5580cSJeff Kirsher eop && (len == frag_len_left), loopback); 453a6a5580cSJeff Kirsher frag_len_left -= len; 454a6a5580cSJeff Kirsher offset += len; 455a6a5580cSJeff Kirsher } 456a6a5580cSJeff Kirsher 457a6a5580cSJeff Kirsher if (eop) 458a6a5580cSJeff Kirsher return; 459a6a5580cSJeff Kirsher 460a6a5580cSJeff Kirsher /* Queue WQ_ENET_MAX_DESC_LEN length descriptors 461a6a5580cSJeff Kirsher * for additional data fragments 462a6a5580cSJeff Kirsher */ 463a6a5580cSJeff Kirsher for (frag = skb_shinfo(skb)->frags; len_left; frag++) { 4649e903e08SEric Dumazet len_left -= skb_frag_size(frag); 4659e903e08SEric Dumazet frag_len_left = skb_frag_size(frag); 4664bf5adbfSIan Campbell offset = 0; 467a6a5580cSJeff Kirsher 468a6a5580cSJeff Kirsher while (frag_len_left) { 469a6a5580cSJeff Kirsher len = min(frag_len_left, 470a6a5580cSJeff Kirsher (unsigned int)WQ_ENET_MAX_DESC_LEN); 4714bf5adbfSIan Campbell dma_addr = skb_frag_dma_map(&enic->pdev->dev, frag, 472a6a5580cSJeff Kirsher offset, len, 4735d6bcdfeSIan Campbell DMA_TO_DEVICE); 474a6a5580cSJeff Kirsher enic_queue_wq_desc_cont(wq, skb, 475a6a5580cSJeff Kirsher dma_addr, 476a6a5580cSJeff Kirsher len, 477a6a5580cSJeff Kirsher (len_left == 0) && 478a6a5580cSJeff Kirsher (len == frag_len_left), /* EOP? */ 479a6a5580cSJeff Kirsher loopback); 480a6a5580cSJeff Kirsher frag_len_left -= len; 481a6a5580cSJeff Kirsher offset += len; 482a6a5580cSJeff Kirsher } 483a6a5580cSJeff Kirsher } 484a6a5580cSJeff Kirsher } 485a6a5580cSJeff Kirsher 486a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb(struct enic *enic, 487a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb) 488a6a5580cSJeff Kirsher { 489a6a5580cSJeff Kirsher unsigned int mss = skb_shinfo(skb)->gso_size; 490a6a5580cSJeff Kirsher unsigned int vlan_tag = 0; 491a6a5580cSJeff Kirsher int vlan_tag_insert = 0; 492a6a5580cSJeff Kirsher int loopback = 0; 493a6a5580cSJeff Kirsher 494a6a5580cSJeff Kirsher if (vlan_tx_tag_present(skb)) { 495a6a5580cSJeff Kirsher /* VLAN tag from trunking driver */ 496a6a5580cSJeff Kirsher vlan_tag_insert = 1; 497a6a5580cSJeff Kirsher vlan_tag = vlan_tx_tag_get(skb); 498a6a5580cSJeff Kirsher } else if (enic->loop_enable) { 499a6a5580cSJeff Kirsher vlan_tag = enic->loop_tag; 500a6a5580cSJeff Kirsher loopback = 1; 501a6a5580cSJeff Kirsher } 502a6a5580cSJeff Kirsher 503a6a5580cSJeff Kirsher if (mss) 504a6a5580cSJeff Kirsher enic_queue_wq_skb_tso(enic, wq, skb, mss, 505a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 506a6a5580cSJeff Kirsher else if (skb->ip_summed == CHECKSUM_PARTIAL) 507a6a5580cSJeff Kirsher enic_queue_wq_skb_csum_l4(enic, wq, skb, 508a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 509a6a5580cSJeff Kirsher else 510a6a5580cSJeff Kirsher enic_queue_wq_skb_vlan(enic, wq, skb, 511a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 512a6a5580cSJeff Kirsher } 513a6a5580cSJeff Kirsher 514a6a5580cSJeff Kirsher /* netif_tx_lock held, process context with BHs disabled, or BH */ 515a6a5580cSJeff Kirsher static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, 516a6a5580cSJeff Kirsher struct net_device *netdev) 517a6a5580cSJeff Kirsher { 518a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 519822473b6Sgovindarajulu.v struct vnic_wq *wq; 520a6a5580cSJeff Kirsher unsigned long flags; 521822473b6Sgovindarajulu.v unsigned int txq_map; 522a6a5580cSJeff Kirsher 523a6a5580cSJeff Kirsher if (skb->len <= 0) { 524a6a5580cSJeff Kirsher dev_kfree_skb(skb); 525a6a5580cSJeff Kirsher return NETDEV_TX_OK; 526a6a5580cSJeff Kirsher } 527a6a5580cSJeff Kirsher 528822473b6Sgovindarajulu.v txq_map = skb_get_queue_mapping(skb) % enic->wq_count; 529822473b6Sgovindarajulu.v wq = &enic->wq[txq_map]; 530822473b6Sgovindarajulu.v 531a6a5580cSJeff Kirsher /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, 532a6a5580cSJeff Kirsher * which is very likely. In the off chance it's going to take 533a6a5580cSJeff Kirsher * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. 534a6a5580cSJeff Kirsher */ 535a6a5580cSJeff Kirsher 536a6a5580cSJeff Kirsher if (skb_shinfo(skb)->gso_size == 0 && 537a6a5580cSJeff Kirsher skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && 538a6a5580cSJeff Kirsher skb_linearize(skb)) { 539a6a5580cSJeff Kirsher dev_kfree_skb(skb); 540a6a5580cSJeff Kirsher return NETDEV_TX_OK; 541a6a5580cSJeff Kirsher } 542a6a5580cSJeff Kirsher 543822473b6Sgovindarajulu.v spin_lock_irqsave(&enic->wq_lock[txq_map], flags); 544a6a5580cSJeff Kirsher 545a6a5580cSJeff Kirsher if (vnic_wq_desc_avail(wq) < 546a6a5580cSJeff Kirsher skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { 547822473b6Sgovindarajulu.v netif_tx_stop_queue(netdev_get_tx_queue(netdev, txq_map)); 548a6a5580cSJeff Kirsher /* This is a hard error, log it */ 549a6a5580cSJeff Kirsher netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); 550822473b6Sgovindarajulu.v spin_unlock_irqrestore(&enic->wq_lock[txq_map], flags); 551a6a5580cSJeff Kirsher return NETDEV_TX_BUSY; 552a6a5580cSJeff Kirsher } 553a6a5580cSJeff Kirsher 554a6a5580cSJeff Kirsher enic_queue_wq_skb(enic, wq, skb); 555a6a5580cSJeff Kirsher 556a6a5580cSJeff Kirsher if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) 557822473b6Sgovindarajulu.v netif_tx_stop_queue(netdev_get_tx_queue(netdev, txq_map)); 558a6a5580cSJeff Kirsher 559822473b6Sgovindarajulu.v spin_unlock_irqrestore(&enic->wq_lock[txq_map], flags); 560a6a5580cSJeff Kirsher 561a6a5580cSJeff Kirsher return NETDEV_TX_OK; 562a6a5580cSJeff Kirsher } 563a6a5580cSJeff Kirsher 564a6a5580cSJeff Kirsher /* dev_base_lock rwlock held, nominally process context */ 565a6a5580cSJeff Kirsher static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, 566a6a5580cSJeff Kirsher struct rtnl_link_stats64 *net_stats) 567a6a5580cSJeff Kirsher { 568a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 569a6a5580cSJeff Kirsher struct vnic_stats *stats; 570a6a5580cSJeff Kirsher 571a6a5580cSJeff Kirsher enic_dev_stats_dump(enic, &stats); 572a6a5580cSJeff Kirsher 573a6a5580cSJeff Kirsher net_stats->tx_packets = stats->tx.tx_frames_ok; 574a6a5580cSJeff Kirsher net_stats->tx_bytes = stats->tx.tx_bytes_ok; 575a6a5580cSJeff Kirsher net_stats->tx_errors = stats->tx.tx_errors; 576a6a5580cSJeff Kirsher net_stats->tx_dropped = stats->tx.tx_drops; 577a6a5580cSJeff Kirsher 578a6a5580cSJeff Kirsher net_stats->rx_packets = stats->rx.rx_frames_ok; 579a6a5580cSJeff Kirsher net_stats->rx_bytes = stats->rx.rx_bytes_ok; 580a6a5580cSJeff Kirsher net_stats->rx_errors = stats->rx.rx_errors; 581a6a5580cSJeff Kirsher net_stats->multicast = stats->rx.rx_multicast_frames_ok; 582a6a5580cSJeff Kirsher net_stats->rx_over_errors = enic->rq_truncated_pkts; 583a6a5580cSJeff Kirsher net_stats->rx_crc_errors = enic->rq_bad_fcs; 584a6a5580cSJeff Kirsher net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; 585a6a5580cSJeff Kirsher 586a6a5580cSJeff Kirsher return net_stats; 587a6a5580cSJeff Kirsher } 588a6a5580cSJeff Kirsher 589a6a5580cSJeff Kirsher void enic_reset_addr_lists(struct enic *enic) 590a6a5580cSJeff Kirsher { 591a6a5580cSJeff Kirsher enic->mc_count = 0; 592a6a5580cSJeff Kirsher enic->uc_count = 0; 593a6a5580cSJeff Kirsher enic->flags = 0; 594a6a5580cSJeff Kirsher } 595a6a5580cSJeff Kirsher 596a6a5580cSJeff Kirsher static int enic_set_mac_addr(struct net_device *netdev, char *addr) 597a6a5580cSJeff Kirsher { 598a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 599a6a5580cSJeff Kirsher 6007335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) { 601a6a5580cSJeff Kirsher if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) 602a6a5580cSJeff Kirsher return -EADDRNOTAVAIL; 603a6a5580cSJeff Kirsher } else { 604a6a5580cSJeff Kirsher if (!is_valid_ether_addr(addr)) 605a6a5580cSJeff Kirsher return -EADDRNOTAVAIL; 606a6a5580cSJeff Kirsher } 607a6a5580cSJeff Kirsher 608a6a5580cSJeff Kirsher memcpy(netdev->dev_addr, addr, netdev->addr_len); 609a6a5580cSJeff Kirsher 610a6a5580cSJeff Kirsher return 0; 611a6a5580cSJeff Kirsher } 612a6a5580cSJeff Kirsher 613a6a5580cSJeff Kirsher static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) 614a6a5580cSJeff Kirsher { 615a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 616a6a5580cSJeff Kirsher struct sockaddr *saddr = p; 617a6a5580cSJeff Kirsher char *addr = saddr->sa_data; 618a6a5580cSJeff Kirsher int err; 619a6a5580cSJeff Kirsher 620a6a5580cSJeff Kirsher if (netif_running(enic->netdev)) { 621a6a5580cSJeff Kirsher err = enic_dev_del_station_addr(enic); 622a6a5580cSJeff Kirsher if (err) 623a6a5580cSJeff Kirsher return err; 624a6a5580cSJeff Kirsher } 625a6a5580cSJeff Kirsher 626a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, addr); 627a6a5580cSJeff Kirsher if (err) 628a6a5580cSJeff Kirsher return err; 629a6a5580cSJeff Kirsher 630a6a5580cSJeff Kirsher if (netif_running(enic->netdev)) { 631a6a5580cSJeff Kirsher err = enic_dev_add_station_addr(enic); 632a6a5580cSJeff Kirsher if (err) 633a6a5580cSJeff Kirsher return err; 634a6a5580cSJeff Kirsher } 635a6a5580cSJeff Kirsher 636a6a5580cSJeff Kirsher return err; 637a6a5580cSJeff Kirsher } 638a6a5580cSJeff Kirsher 639a6a5580cSJeff Kirsher static int enic_set_mac_address(struct net_device *netdev, void *p) 640a6a5580cSJeff Kirsher { 641a6a5580cSJeff Kirsher struct sockaddr *saddr = p; 642a6a5580cSJeff Kirsher char *addr = saddr->sa_data; 643a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 644a6a5580cSJeff Kirsher int err; 645a6a5580cSJeff Kirsher 646a6a5580cSJeff Kirsher err = enic_dev_del_station_addr(enic); 647a6a5580cSJeff Kirsher if (err) 648a6a5580cSJeff Kirsher return err; 649a6a5580cSJeff Kirsher 650a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, addr); 651a6a5580cSJeff Kirsher if (err) 652a6a5580cSJeff Kirsher return err; 653a6a5580cSJeff Kirsher 654a6a5580cSJeff Kirsher return enic_dev_add_station_addr(enic); 655a6a5580cSJeff Kirsher } 656a6a5580cSJeff Kirsher 657a6a5580cSJeff Kirsher static void enic_update_multicast_addr_list(struct enic *enic) 658a6a5580cSJeff Kirsher { 659a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 660a6a5580cSJeff Kirsher struct netdev_hw_addr *ha; 661a6a5580cSJeff Kirsher unsigned int mc_count = netdev_mc_count(netdev); 662a6a5580cSJeff Kirsher u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; 663a6a5580cSJeff Kirsher unsigned int i, j; 664a6a5580cSJeff Kirsher 665a6a5580cSJeff Kirsher if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS) { 666a6a5580cSJeff Kirsher netdev_warn(netdev, "Registering only %d out of %d " 667a6a5580cSJeff Kirsher "multicast addresses\n", 668a6a5580cSJeff Kirsher ENIC_MULTICAST_PERFECT_FILTERS, mc_count); 669a6a5580cSJeff Kirsher mc_count = ENIC_MULTICAST_PERFECT_FILTERS; 670a6a5580cSJeff Kirsher } 671a6a5580cSJeff Kirsher 672a6a5580cSJeff Kirsher /* Is there an easier way? Trying to minimize to 673a6a5580cSJeff Kirsher * calls to add/del multicast addrs. We keep the 674a6a5580cSJeff Kirsher * addrs from the last call in enic->mc_addr and 675a6a5580cSJeff Kirsher * look for changes to add/del. 676a6a5580cSJeff Kirsher */ 677a6a5580cSJeff Kirsher 678a6a5580cSJeff Kirsher i = 0; 679a6a5580cSJeff Kirsher netdev_for_each_mc_addr(ha, netdev) { 680a6a5580cSJeff Kirsher if (i == mc_count) 681a6a5580cSJeff Kirsher break; 682a6a5580cSJeff Kirsher memcpy(mc_addr[i++], ha->addr, ETH_ALEN); 683a6a5580cSJeff Kirsher } 684a6a5580cSJeff Kirsher 685a6a5580cSJeff Kirsher for (i = 0; i < enic->mc_count; i++) { 686a6a5580cSJeff Kirsher for (j = 0; j < mc_count; j++) 6872e42e474SJoe Perches if (ether_addr_equal(enic->mc_addr[i], mc_addr[j])) 688a6a5580cSJeff Kirsher break; 689a6a5580cSJeff Kirsher if (j == mc_count) 690a6a5580cSJeff Kirsher enic_dev_del_addr(enic, enic->mc_addr[i]); 691a6a5580cSJeff Kirsher } 692a6a5580cSJeff Kirsher 693a6a5580cSJeff Kirsher for (i = 0; i < mc_count; i++) { 694a6a5580cSJeff Kirsher for (j = 0; j < enic->mc_count; j++) 6952e42e474SJoe Perches if (ether_addr_equal(mc_addr[i], enic->mc_addr[j])) 696a6a5580cSJeff Kirsher break; 697a6a5580cSJeff Kirsher if (j == enic->mc_count) 698a6a5580cSJeff Kirsher enic_dev_add_addr(enic, mc_addr[i]); 699a6a5580cSJeff Kirsher } 700a6a5580cSJeff Kirsher 701a6a5580cSJeff Kirsher /* Save the list to compare against next time 702a6a5580cSJeff Kirsher */ 703a6a5580cSJeff Kirsher 704a6a5580cSJeff Kirsher for (i = 0; i < mc_count; i++) 705a6a5580cSJeff Kirsher memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN); 706a6a5580cSJeff Kirsher 707a6a5580cSJeff Kirsher enic->mc_count = mc_count; 708a6a5580cSJeff Kirsher } 709a6a5580cSJeff Kirsher 710a6a5580cSJeff Kirsher static void enic_update_unicast_addr_list(struct enic *enic) 711a6a5580cSJeff Kirsher { 712a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 713a6a5580cSJeff Kirsher struct netdev_hw_addr *ha; 714a6a5580cSJeff Kirsher unsigned int uc_count = netdev_uc_count(netdev); 715a6a5580cSJeff Kirsher u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; 716a6a5580cSJeff Kirsher unsigned int i, j; 717a6a5580cSJeff Kirsher 718a6a5580cSJeff Kirsher if (uc_count > ENIC_UNICAST_PERFECT_FILTERS) { 719a6a5580cSJeff Kirsher netdev_warn(netdev, "Registering only %d out of %d " 720a6a5580cSJeff Kirsher "unicast addresses\n", 721a6a5580cSJeff Kirsher ENIC_UNICAST_PERFECT_FILTERS, uc_count); 722a6a5580cSJeff Kirsher uc_count = ENIC_UNICAST_PERFECT_FILTERS; 723a6a5580cSJeff Kirsher } 724a6a5580cSJeff Kirsher 725a6a5580cSJeff Kirsher /* Is there an easier way? Trying to minimize to 726a6a5580cSJeff Kirsher * calls to add/del unicast addrs. We keep the 727a6a5580cSJeff Kirsher * addrs from the last call in enic->uc_addr and 728a6a5580cSJeff Kirsher * look for changes to add/del. 729a6a5580cSJeff Kirsher */ 730a6a5580cSJeff Kirsher 731a6a5580cSJeff Kirsher i = 0; 732a6a5580cSJeff Kirsher netdev_for_each_uc_addr(ha, netdev) { 733a6a5580cSJeff Kirsher if (i == uc_count) 734a6a5580cSJeff Kirsher break; 735a6a5580cSJeff Kirsher memcpy(uc_addr[i++], ha->addr, ETH_ALEN); 736a6a5580cSJeff Kirsher } 737a6a5580cSJeff Kirsher 738a6a5580cSJeff Kirsher for (i = 0; i < enic->uc_count; i++) { 739a6a5580cSJeff Kirsher for (j = 0; j < uc_count; j++) 7402e42e474SJoe Perches if (ether_addr_equal(enic->uc_addr[i], uc_addr[j])) 741a6a5580cSJeff Kirsher break; 742a6a5580cSJeff Kirsher if (j == uc_count) 743a6a5580cSJeff Kirsher enic_dev_del_addr(enic, enic->uc_addr[i]); 744a6a5580cSJeff Kirsher } 745a6a5580cSJeff Kirsher 746a6a5580cSJeff Kirsher for (i = 0; i < uc_count; i++) { 747a6a5580cSJeff Kirsher for (j = 0; j < enic->uc_count; j++) 7482e42e474SJoe Perches if (ether_addr_equal(uc_addr[i], enic->uc_addr[j])) 749a6a5580cSJeff Kirsher break; 750a6a5580cSJeff Kirsher if (j == enic->uc_count) 751a6a5580cSJeff Kirsher enic_dev_add_addr(enic, uc_addr[i]); 752a6a5580cSJeff Kirsher } 753a6a5580cSJeff Kirsher 754a6a5580cSJeff Kirsher /* Save the list to compare against next time 755a6a5580cSJeff Kirsher */ 756a6a5580cSJeff Kirsher 757a6a5580cSJeff Kirsher for (i = 0; i < uc_count; i++) 758a6a5580cSJeff Kirsher memcpy(enic->uc_addr[i], uc_addr[i], ETH_ALEN); 759a6a5580cSJeff Kirsher 760a6a5580cSJeff Kirsher enic->uc_count = uc_count; 761a6a5580cSJeff Kirsher } 762a6a5580cSJeff Kirsher 763a6a5580cSJeff Kirsher /* netif_tx_lock held, BHs disabled */ 764a6a5580cSJeff Kirsher static void enic_set_rx_mode(struct net_device *netdev) 765a6a5580cSJeff Kirsher { 766a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 767a6a5580cSJeff Kirsher int directed = 1; 768a6a5580cSJeff Kirsher int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; 769a6a5580cSJeff Kirsher int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; 770a6a5580cSJeff Kirsher int promisc = (netdev->flags & IFF_PROMISC) || 771a6a5580cSJeff Kirsher netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; 772a6a5580cSJeff Kirsher int allmulti = (netdev->flags & IFF_ALLMULTI) || 773a6a5580cSJeff Kirsher netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; 774a6a5580cSJeff Kirsher unsigned int flags = netdev->flags | 775a6a5580cSJeff Kirsher (allmulti ? IFF_ALLMULTI : 0) | 776a6a5580cSJeff Kirsher (promisc ? IFF_PROMISC : 0); 777a6a5580cSJeff Kirsher 778a6a5580cSJeff Kirsher if (enic->flags != flags) { 779a6a5580cSJeff Kirsher enic->flags = flags; 780a6a5580cSJeff Kirsher enic_dev_packet_filter(enic, directed, 781a6a5580cSJeff Kirsher multicast, broadcast, promisc, allmulti); 782a6a5580cSJeff Kirsher } 783a6a5580cSJeff Kirsher 784a6a5580cSJeff Kirsher if (!promisc) { 785a6a5580cSJeff Kirsher enic_update_unicast_addr_list(enic); 786a6a5580cSJeff Kirsher if (!allmulti) 787a6a5580cSJeff Kirsher enic_update_multicast_addr_list(enic); 788a6a5580cSJeff Kirsher } 789a6a5580cSJeff Kirsher } 790a6a5580cSJeff Kirsher 791a6a5580cSJeff Kirsher /* netif_tx_lock held, BHs disabled */ 792a6a5580cSJeff Kirsher static void enic_tx_timeout(struct net_device *netdev) 793a6a5580cSJeff Kirsher { 794a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 795a6a5580cSJeff Kirsher schedule_work(&enic->reset); 796a6a5580cSJeff Kirsher } 797a6a5580cSJeff Kirsher 798a6a5580cSJeff Kirsher static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 799a6a5580cSJeff Kirsher { 800a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 8013f192795SRoopa Prabhu struct enic_port_profile *pp; 8023f192795SRoopa Prabhu int err; 803a6a5580cSJeff Kirsher 8043f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 8053f192795SRoopa Prabhu if (err) 8063f192795SRoopa Prabhu return err; 807a6a5580cSJeff Kirsher 808b8622cbdSRoopa Prabhu if (is_valid_ether_addr(mac) || is_zero_ether_addr(mac)) { 809b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) { 8103f192795SRoopa Prabhu memcpy(pp->vf_mac, mac, ETH_ALEN); 811a6a5580cSJeff Kirsher return 0; 812b4765833SRoopa Prabhu } else { 813b4765833SRoopa Prabhu /* 814b4765833SRoopa Prabhu * For sriov vf's set the mac in hw 815b4765833SRoopa Prabhu */ 816b4765833SRoopa Prabhu ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, 817b4765833SRoopa Prabhu vnic_dev_set_mac_addr, mac); 818b4765833SRoopa Prabhu return enic_dev_status_to_errno(err); 819b4765833SRoopa Prabhu } 820a6a5580cSJeff Kirsher } else 821a6a5580cSJeff Kirsher return -EINVAL; 822a6a5580cSJeff Kirsher } 823a6a5580cSJeff Kirsher 824a6a5580cSJeff Kirsher static int enic_set_vf_port(struct net_device *netdev, int vf, 825a6a5580cSJeff Kirsher struct nlattr *port[]) 826a6a5580cSJeff Kirsher { 827a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 828a6a5580cSJeff Kirsher struct enic_port_profile prev_pp; 8293f192795SRoopa Prabhu struct enic_port_profile *pp; 830a6a5580cSJeff Kirsher int err = 0, restore_pp = 1; 831a6a5580cSJeff Kirsher 8323f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 8333f192795SRoopa Prabhu if (err) 8343f192795SRoopa Prabhu return err; 835a6a5580cSJeff Kirsher 836a6a5580cSJeff Kirsher if (!port[IFLA_PORT_REQUEST]) 837a6a5580cSJeff Kirsher return -EOPNOTSUPP; 838a6a5580cSJeff Kirsher 8393f192795SRoopa Prabhu memcpy(&prev_pp, pp, sizeof(*enic->pp)); 8403f192795SRoopa Prabhu memset(pp, 0, sizeof(*enic->pp)); 841a6a5580cSJeff Kirsher 8423f192795SRoopa Prabhu pp->set |= ENIC_SET_REQUEST; 8433f192795SRoopa Prabhu pp->request = nla_get_u8(port[IFLA_PORT_REQUEST]); 844a6a5580cSJeff Kirsher 845a6a5580cSJeff Kirsher if (port[IFLA_PORT_PROFILE]) { 8463f192795SRoopa Prabhu pp->set |= ENIC_SET_NAME; 8473f192795SRoopa Prabhu memcpy(pp->name, nla_data(port[IFLA_PORT_PROFILE]), 848a6a5580cSJeff Kirsher PORT_PROFILE_MAX); 849a6a5580cSJeff Kirsher } 850a6a5580cSJeff Kirsher 851a6a5580cSJeff Kirsher if (port[IFLA_PORT_INSTANCE_UUID]) { 8523f192795SRoopa Prabhu pp->set |= ENIC_SET_INSTANCE; 8533f192795SRoopa Prabhu memcpy(pp->instance_uuid, 854a6a5580cSJeff Kirsher nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); 855a6a5580cSJeff Kirsher } 856a6a5580cSJeff Kirsher 857a6a5580cSJeff Kirsher if (port[IFLA_PORT_HOST_UUID]) { 8583f192795SRoopa Prabhu pp->set |= ENIC_SET_HOST; 8593f192795SRoopa Prabhu memcpy(pp->host_uuid, 860a6a5580cSJeff Kirsher nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); 861a6a5580cSJeff Kirsher } 862a6a5580cSJeff Kirsher 863b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) { 864a6a5580cSJeff Kirsher /* Special case handling: mac came from IFLA_VF_MAC */ 865a6a5580cSJeff Kirsher if (!is_zero_ether_addr(prev_pp.vf_mac)) 8663f192795SRoopa Prabhu memcpy(pp->mac_addr, prev_pp.vf_mac, ETH_ALEN); 867a6a5580cSJeff Kirsher 868b4765833SRoopa Prabhu if (is_zero_ether_addr(netdev->dev_addr)) 869da194316SDanny Kukawka eth_hw_addr_random(netdev); 870b4765833SRoopa Prabhu } else { 871b4765833SRoopa Prabhu /* SR-IOV VF: get mac from adapter */ 872b4765833SRoopa Prabhu ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, 873b4765833SRoopa Prabhu vnic_dev_get_mac_addr, pp->mac_addr); 874b4765833SRoopa Prabhu if (err) { 875b4765833SRoopa Prabhu netdev_err(netdev, "Error getting mac for vf %d\n", vf); 876b4765833SRoopa Prabhu memcpy(pp, &prev_pp, sizeof(*pp)); 877b4765833SRoopa Prabhu return enic_dev_status_to_errno(err); 878b4765833SRoopa Prabhu } 879b4765833SRoopa Prabhu } 880a6a5580cSJeff Kirsher 8813f192795SRoopa Prabhu err = enic_process_set_pp_request(enic, vf, &prev_pp, &restore_pp); 882a6a5580cSJeff Kirsher if (err) { 883a6a5580cSJeff Kirsher if (restore_pp) { 884a6a5580cSJeff Kirsher /* Things are still the way they were: Implicit 885a6a5580cSJeff Kirsher * DISASSOCIATE failed 886a6a5580cSJeff Kirsher */ 8873f192795SRoopa Prabhu memcpy(pp, &prev_pp, sizeof(*pp)); 888a6a5580cSJeff Kirsher } else { 8893f192795SRoopa Prabhu memset(pp, 0, sizeof(*pp)); 8903f192795SRoopa Prabhu if (vf == PORT_SELF_VF) 891a6a5580cSJeff Kirsher memset(netdev->dev_addr, 0, ETH_ALEN); 892a6a5580cSJeff Kirsher } 893a6a5580cSJeff Kirsher } else { 894a6a5580cSJeff Kirsher /* Set flag to indicate that the port assoc/disassoc 895a6a5580cSJeff Kirsher * request has been sent out to fw 896a6a5580cSJeff Kirsher */ 8973f192795SRoopa Prabhu pp->set |= ENIC_PORT_REQUEST_APPLIED; 898a6a5580cSJeff Kirsher 899a6a5580cSJeff Kirsher /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ 9003f192795SRoopa Prabhu if (pp->request == PORT_REQUEST_DISASSOCIATE) { 9013f192795SRoopa Prabhu memset(pp->mac_addr, 0, ETH_ALEN); 9023f192795SRoopa Prabhu if (vf == PORT_SELF_VF) 903a6a5580cSJeff Kirsher memset(netdev->dev_addr, 0, ETH_ALEN); 904a6a5580cSJeff Kirsher } 905a6a5580cSJeff Kirsher } 906a6a5580cSJeff Kirsher 907b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) 9083f192795SRoopa Prabhu memset(pp->vf_mac, 0, ETH_ALEN); 909a6a5580cSJeff Kirsher 910a6a5580cSJeff Kirsher return err; 911a6a5580cSJeff Kirsher } 912a6a5580cSJeff Kirsher 913a6a5580cSJeff Kirsher static int enic_get_vf_port(struct net_device *netdev, int vf, 914a6a5580cSJeff Kirsher struct sk_buff *skb) 915a6a5580cSJeff Kirsher { 916a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 917a6a5580cSJeff Kirsher u16 response = PORT_PROFILE_RESPONSE_SUCCESS; 9183f192795SRoopa Prabhu struct enic_port_profile *pp; 919a6a5580cSJeff Kirsher int err; 920a6a5580cSJeff Kirsher 9213f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 922a6a5580cSJeff Kirsher if (err) 923a6a5580cSJeff Kirsher return err; 924a6a5580cSJeff Kirsher 9253f192795SRoopa Prabhu if (!(pp->set & ENIC_PORT_REQUEST_APPLIED)) 9263f192795SRoopa Prabhu return -ENODATA; 9273f192795SRoopa Prabhu 9283f192795SRoopa Prabhu err = enic_process_get_pp_request(enic, vf, pp->request, &response); 9293f192795SRoopa Prabhu if (err) 9303f192795SRoopa Prabhu return err; 9313f192795SRoopa Prabhu 9321a106de6SDavid S. Miller if (nla_put_u16(skb, IFLA_PORT_REQUEST, pp->request) || 9331a106de6SDavid S. Miller nla_put_u16(skb, IFLA_PORT_RESPONSE, response) || 9341a106de6SDavid S. Miller ((pp->set & ENIC_SET_NAME) && 9351a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, pp->name)) || 9361a106de6SDavid S. Miller ((pp->set & ENIC_SET_INSTANCE) && 9371a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, 9381a106de6SDavid S. Miller pp->instance_uuid)) || 9391a106de6SDavid S. Miller ((pp->set & ENIC_SET_HOST) && 9401a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, pp->host_uuid))) 9411a106de6SDavid S. Miller goto nla_put_failure; 942a6a5580cSJeff Kirsher return 0; 943a6a5580cSJeff Kirsher 944a6a5580cSJeff Kirsher nla_put_failure: 945a6a5580cSJeff Kirsher return -EMSGSIZE; 946a6a5580cSJeff Kirsher } 947a6a5580cSJeff Kirsher 948a6a5580cSJeff Kirsher static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) 949a6a5580cSJeff Kirsher { 950a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 951a6a5580cSJeff Kirsher 952a6a5580cSJeff Kirsher if (!buf->os_buf) 953a6a5580cSJeff Kirsher return; 954a6a5580cSJeff Kirsher 955a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 956a6a5580cSJeff Kirsher buf->len, PCI_DMA_FROMDEVICE); 957a6a5580cSJeff Kirsher dev_kfree_skb_any(buf->os_buf); 958a6a5580cSJeff Kirsher } 959a6a5580cSJeff Kirsher 960a6a5580cSJeff Kirsher static int enic_rq_alloc_buf(struct vnic_rq *rq) 961a6a5580cSJeff Kirsher { 962a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 963a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 964a6a5580cSJeff Kirsher struct sk_buff *skb; 965a6a5580cSJeff Kirsher unsigned int len = netdev->mtu + VLAN_ETH_HLEN; 966a6a5580cSJeff Kirsher unsigned int os_buf_index = 0; 967a6a5580cSJeff Kirsher dma_addr_t dma_addr; 968a6a5580cSJeff Kirsher 969a6a5580cSJeff Kirsher skb = netdev_alloc_skb_ip_align(netdev, len); 970a6a5580cSJeff Kirsher if (!skb) 971a6a5580cSJeff Kirsher return -ENOMEM; 972a6a5580cSJeff Kirsher 973a6a5580cSJeff Kirsher dma_addr = pci_map_single(enic->pdev, skb->data, 974a6a5580cSJeff Kirsher len, PCI_DMA_FROMDEVICE); 975a6a5580cSJeff Kirsher 976a6a5580cSJeff Kirsher enic_queue_rq_desc(rq, skb, os_buf_index, 977a6a5580cSJeff Kirsher dma_addr, len); 978a6a5580cSJeff Kirsher 979a6a5580cSJeff Kirsher return 0; 980a6a5580cSJeff Kirsher } 981a6a5580cSJeff Kirsher 982a6a5580cSJeff Kirsher static void enic_rq_indicate_buf(struct vnic_rq *rq, 983a6a5580cSJeff Kirsher struct cq_desc *cq_desc, struct vnic_rq_buf *buf, 984a6a5580cSJeff Kirsher int skipped, void *opaque) 985a6a5580cSJeff Kirsher { 986a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 987a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 988a6a5580cSJeff Kirsher struct sk_buff *skb; 989a6a5580cSJeff Kirsher 990a6a5580cSJeff Kirsher u8 type, color, eop, sop, ingress_port, vlan_stripped; 991a6a5580cSJeff Kirsher u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; 992a6a5580cSJeff Kirsher u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; 993a6a5580cSJeff Kirsher u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; 994a6a5580cSJeff Kirsher u8 packet_error; 995a6a5580cSJeff Kirsher u16 q_number, completed_index, bytes_written, vlan_tci, checksum; 996a6a5580cSJeff Kirsher u32 rss_hash; 997a6a5580cSJeff Kirsher 998a6a5580cSJeff Kirsher if (skipped) 999a6a5580cSJeff Kirsher return; 1000a6a5580cSJeff Kirsher 1001a6a5580cSJeff Kirsher skb = buf->os_buf; 1002a6a5580cSJeff Kirsher prefetch(skb->data - NET_IP_ALIGN); 1003a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 1004a6a5580cSJeff Kirsher buf->len, PCI_DMA_FROMDEVICE); 1005a6a5580cSJeff Kirsher 1006a6a5580cSJeff Kirsher cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, 1007a6a5580cSJeff Kirsher &type, &color, &q_number, &completed_index, 1008a6a5580cSJeff Kirsher &ingress_port, &fcoe, &eop, &sop, &rss_type, 1009a6a5580cSJeff Kirsher &csum_not_calc, &rss_hash, &bytes_written, 1010a6a5580cSJeff Kirsher &packet_error, &vlan_stripped, &vlan_tci, &checksum, 1011a6a5580cSJeff Kirsher &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, 1012a6a5580cSJeff Kirsher &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, 1013a6a5580cSJeff Kirsher &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, 1014a6a5580cSJeff Kirsher &fcs_ok); 1015a6a5580cSJeff Kirsher 1016a6a5580cSJeff Kirsher if (packet_error) { 1017a6a5580cSJeff Kirsher 1018a6a5580cSJeff Kirsher if (!fcs_ok) { 1019a6a5580cSJeff Kirsher if (bytes_written > 0) 1020a6a5580cSJeff Kirsher enic->rq_bad_fcs++; 1021a6a5580cSJeff Kirsher else if (bytes_written == 0) 1022a6a5580cSJeff Kirsher enic->rq_truncated_pkts++; 1023a6a5580cSJeff Kirsher } 1024a6a5580cSJeff Kirsher 1025a6a5580cSJeff Kirsher dev_kfree_skb_any(skb); 1026a6a5580cSJeff Kirsher 1027a6a5580cSJeff Kirsher return; 1028a6a5580cSJeff Kirsher } 1029a6a5580cSJeff Kirsher 1030a6a5580cSJeff Kirsher if (eop && bytes_written > 0) { 1031a6a5580cSJeff Kirsher 1032a6a5580cSJeff Kirsher /* Good receive 1033a6a5580cSJeff Kirsher */ 1034a6a5580cSJeff Kirsher 1035a6a5580cSJeff Kirsher skb_put(skb, bytes_written); 1036a6a5580cSJeff Kirsher skb->protocol = eth_type_trans(skb, netdev); 1037a6a5580cSJeff Kirsher 1038a6a5580cSJeff Kirsher if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { 1039a6a5580cSJeff Kirsher skb->csum = htons(checksum); 1040a6a5580cSJeff Kirsher skb->ip_summed = CHECKSUM_COMPLETE; 1041a6a5580cSJeff Kirsher } 1042a6a5580cSJeff Kirsher 1043a6a5580cSJeff Kirsher if (vlan_stripped) 104486a9bad3SPatrick McHardy __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci); 1045a6a5580cSJeff Kirsher 1046a6a5580cSJeff Kirsher if (netdev->features & NETIF_F_GRO) 1047a6a5580cSJeff Kirsher napi_gro_receive(&enic->napi[q_number], skb); 1048a6a5580cSJeff Kirsher else 1049a6a5580cSJeff Kirsher netif_receive_skb(skb); 1050a6a5580cSJeff Kirsher } else { 1051a6a5580cSJeff Kirsher 1052a6a5580cSJeff Kirsher /* Buffer overflow 1053a6a5580cSJeff Kirsher */ 1054a6a5580cSJeff Kirsher 1055a6a5580cSJeff Kirsher dev_kfree_skb_any(skb); 1056a6a5580cSJeff Kirsher } 1057a6a5580cSJeff Kirsher } 1058a6a5580cSJeff Kirsher 1059a6a5580cSJeff Kirsher static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 1060a6a5580cSJeff Kirsher u8 type, u16 q_number, u16 completed_index, void *opaque) 1061a6a5580cSJeff Kirsher { 1062a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(vdev); 1063a6a5580cSJeff Kirsher 1064a6a5580cSJeff Kirsher vnic_rq_service(&enic->rq[q_number], cq_desc, 1065a6a5580cSJeff Kirsher completed_index, VNIC_RQ_RETURN_DESC, 1066a6a5580cSJeff Kirsher enic_rq_indicate_buf, opaque); 1067a6a5580cSJeff Kirsher 1068a6a5580cSJeff Kirsher return 0; 1069a6a5580cSJeff Kirsher } 1070a6a5580cSJeff Kirsher 1071a6a5580cSJeff Kirsher static int enic_poll(struct napi_struct *napi, int budget) 1072a6a5580cSJeff Kirsher { 1073a6a5580cSJeff Kirsher struct net_device *netdev = napi->dev; 1074a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1075a6a5580cSJeff Kirsher unsigned int cq_rq = enic_cq_rq(enic, 0); 1076a6a5580cSJeff Kirsher unsigned int cq_wq = enic_cq_wq(enic, 0); 1077a6a5580cSJeff Kirsher unsigned int intr = enic_legacy_io_intr(); 1078a6a5580cSJeff Kirsher unsigned int rq_work_to_do = budget; 1079a6a5580cSJeff Kirsher unsigned int wq_work_to_do = -1; /* no limit */ 1080a6a5580cSJeff Kirsher unsigned int work_done, rq_work_done, wq_work_done; 1081a6a5580cSJeff Kirsher int err; 1082a6a5580cSJeff Kirsher 1083a6a5580cSJeff Kirsher /* Service RQ (first) and WQ 1084a6a5580cSJeff Kirsher */ 1085a6a5580cSJeff Kirsher 1086a6a5580cSJeff Kirsher rq_work_done = vnic_cq_service(&enic->cq[cq_rq], 1087a6a5580cSJeff Kirsher rq_work_to_do, enic_rq_service, NULL); 1088a6a5580cSJeff Kirsher 1089a6a5580cSJeff Kirsher wq_work_done = vnic_cq_service(&enic->cq[cq_wq], 1090a6a5580cSJeff Kirsher wq_work_to_do, enic_wq_service, NULL); 1091a6a5580cSJeff Kirsher 1092a6a5580cSJeff Kirsher /* Accumulate intr event credits for this polling 1093a6a5580cSJeff Kirsher * cycle. An intr event is the completion of a 1094a6a5580cSJeff Kirsher * a WQ or RQ packet. 1095a6a5580cSJeff Kirsher */ 1096a6a5580cSJeff Kirsher 1097a6a5580cSJeff Kirsher work_done = rq_work_done + wq_work_done; 1098a6a5580cSJeff Kirsher 1099a6a5580cSJeff Kirsher if (work_done > 0) 1100a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 1101a6a5580cSJeff Kirsher work_done, 1102a6a5580cSJeff Kirsher 0 /* don't unmask intr */, 1103a6a5580cSJeff Kirsher 0 /* don't reset intr timer */); 1104a6a5580cSJeff Kirsher 1105a6a5580cSJeff Kirsher err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); 1106a6a5580cSJeff Kirsher 1107a6a5580cSJeff Kirsher /* Buffer allocation failed. Stay in polling 1108a6a5580cSJeff Kirsher * mode so we can try to fill the ring again. 1109a6a5580cSJeff Kirsher */ 1110a6a5580cSJeff Kirsher 1111a6a5580cSJeff Kirsher if (err) 1112a6a5580cSJeff Kirsher rq_work_done = rq_work_to_do; 1113a6a5580cSJeff Kirsher 1114a6a5580cSJeff Kirsher if (rq_work_done < rq_work_to_do) { 1115a6a5580cSJeff Kirsher 1116a6a5580cSJeff Kirsher /* Some work done, but not enough to stay in polling, 1117a6a5580cSJeff Kirsher * exit polling 1118a6a5580cSJeff Kirsher */ 1119a6a5580cSJeff Kirsher 1120a6a5580cSJeff Kirsher napi_complete(napi); 1121a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[intr]); 1122a6a5580cSJeff Kirsher } 1123a6a5580cSJeff Kirsher 1124a6a5580cSJeff Kirsher return rq_work_done; 1125a6a5580cSJeff Kirsher } 1126a6a5580cSJeff Kirsher 1127a6a5580cSJeff Kirsher static int enic_poll_msix(struct napi_struct *napi, int budget) 1128a6a5580cSJeff Kirsher { 1129a6a5580cSJeff Kirsher struct net_device *netdev = napi->dev; 1130a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1131a6a5580cSJeff Kirsher unsigned int rq = (napi - &enic->napi[0]); 1132a6a5580cSJeff Kirsher unsigned int cq = enic_cq_rq(enic, rq); 1133a6a5580cSJeff Kirsher unsigned int intr = enic_msix_rq_intr(enic, rq); 1134a6a5580cSJeff Kirsher unsigned int work_to_do = budget; 1135a6a5580cSJeff Kirsher unsigned int work_done; 1136a6a5580cSJeff Kirsher int err; 1137a6a5580cSJeff Kirsher 1138a6a5580cSJeff Kirsher /* Service RQ 1139a6a5580cSJeff Kirsher */ 1140a6a5580cSJeff Kirsher 1141a6a5580cSJeff Kirsher work_done = vnic_cq_service(&enic->cq[cq], 1142a6a5580cSJeff Kirsher work_to_do, enic_rq_service, NULL); 1143a6a5580cSJeff Kirsher 1144a6a5580cSJeff Kirsher /* Return intr event credits for this polling 1145a6a5580cSJeff Kirsher * cycle. An intr event is the completion of a 1146a6a5580cSJeff Kirsher * RQ packet. 1147a6a5580cSJeff Kirsher */ 1148a6a5580cSJeff Kirsher 1149a6a5580cSJeff Kirsher if (work_done > 0) 1150a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 1151a6a5580cSJeff Kirsher work_done, 1152a6a5580cSJeff Kirsher 0 /* don't unmask intr */, 1153a6a5580cSJeff Kirsher 0 /* don't reset intr timer */); 1154a6a5580cSJeff Kirsher 1155a6a5580cSJeff Kirsher err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); 1156a6a5580cSJeff Kirsher 1157a6a5580cSJeff Kirsher /* Buffer allocation failed. Stay in polling mode 1158a6a5580cSJeff Kirsher * so we can try to fill the ring again. 1159a6a5580cSJeff Kirsher */ 1160a6a5580cSJeff Kirsher 1161a6a5580cSJeff Kirsher if (err) 1162a6a5580cSJeff Kirsher work_done = work_to_do; 1163a6a5580cSJeff Kirsher 1164a6a5580cSJeff Kirsher if (work_done < work_to_do) { 1165a6a5580cSJeff Kirsher 1166a6a5580cSJeff Kirsher /* Some work done, but not enough to stay in polling, 1167a6a5580cSJeff Kirsher * exit polling 1168a6a5580cSJeff Kirsher */ 1169a6a5580cSJeff Kirsher 1170a6a5580cSJeff Kirsher napi_complete(napi); 1171a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[intr]); 1172a6a5580cSJeff Kirsher } 1173a6a5580cSJeff Kirsher 1174a6a5580cSJeff Kirsher return work_done; 1175a6a5580cSJeff Kirsher } 1176a6a5580cSJeff Kirsher 1177a6a5580cSJeff Kirsher static void enic_notify_timer(unsigned long data) 1178a6a5580cSJeff Kirsher { 1179a6a5580cSJeff Kirsher struct enic *enic = (struct enic *)data; 1180a6a5580cSJeff Kirsher 1181a6a5580cSJeff Kirsher enic_notify_check(enic); 1182a6a5580cSJeff Kirsher 1183a6a5580cSJeff Kirsher mod_timer(&enic->notify_timer, 1184a6a5580cSJeff Kirsher round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); 1185a6a5580cSJeff Kirsher } 1186a6a5580cSJeff Kirsher 1187a6a5580cSJeff Kirsher static void enic_free_intr(struct enic *enic) 1188a6a5580cSJeff Kirsher { 1189a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1190a6a5580cSJeff Kirsher unsigned int i; 1191a6a5580cSJeff Kirsher 1192a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1193a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1194a6a5580cSJeff Kirsher free_irq(enic->pdev->irq, netdev); 1195a6a5580cSJeff Kirsher break; 1196a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1197a6a5580cSJeff Kirsher free_irq(enic->pdev->irq, enic); 1198a6a5580cSJeff Kirsher break; 1199a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1200a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->msix); i++) 1201a6a5580cSJeff Kirsher if (enic->msix[i].requested) 1202a6a5580cSJeff Kirsher free_irq(enic->msix_entry[i].vector, 1203a6a5580cSJeff Kirsher enic->msix[i].devid); 1204a6a5580cSJeff Kirsher break; 1205a6a5580cSJeff Kirsher default: 1206a6a5580cSJeff Kirsher break; 1207a6a5580cSJeff Kirsher } 1208a6a5580cSJeff Kirsher } 1209a6a5580cSJeff Kirsher 1210a6a5580cSJeff Kirsher static int enic_request_intr(struct enic *enic) 1211a6a5580cSJeff Kirsher { 1212a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1213a6a5580cSJeff Kirsher unsigned int i, intr; 1214a6a5580cSJeff Kirsher int err = 0; 1215a6a5580cSJeff Kirsher 1216a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1217a6a5580cSJeff Kirsher 1218a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1219a6a5580cSJeff Kirsher 1220a6a5580cSJeff Kirsher err = request_irq(enic->pdev->irq, enic_isr_legacy, 1221a6a5580cSJeff Kirsher IRQF_SHARED, netdev->name, netdev); 1222a6a5580cSJeff Kirsher break; 1223a6a5580cSJeff Kirsher 1224a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1225a6a5580cSJeff Kirsher 1226a6a5580cSJeff Kirsher err = request_irq(enic->pdev->irq, enic_isr_msi, 1227a6a5580cSJeff Kirsher 0, netdev->name, enic); 1228a6a5580cSJeff Kirsher break; 1229a6a5580cSJeff Kirsher 1230a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1231a6a5580cSJeff Kirsher 1232a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1233a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 12344505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 12354505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1236a6a5580cSJeff Kirsher "%.11s-rx-%d", netdev->name, i); 1237a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_rq; 1238a6a5580cSJeff Kirsher enic->msix[intr].devid = &enic->napi[i]; 1239a6a5580cSJeff Kirsher } 1240a6a5580cSJeff Kirsher 1241a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1242a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 12434505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 12444505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1245a6a5580cSJeff Kirsher "%.11s-tx-%d", netdev->name, i); 1246a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_wq; 1247a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1248a6a5580cSJeff Kirsher } 1249a6a5580cSJeff Kirsher 1250a6a5580cSJeff Kirsher intr = enic_msix_err_intr(enic); 12514505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 12524505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1253a6a5580cSJeff Kirsher "%.11s-err", netdev->name); 1254a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_err; 1255a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1256a6a5580cSJeff Kirsher 1257a6a5580cSJeff Kirsher intr = enic_msix_notify_intr(enic); 12584505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 12594505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1260a6a5580cSJeff Kirsher "%.11s-notify", netdev->name); 1261a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_notify; 1262a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1263a6a5580cSJeff Kirsher 1264a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->msix); i++) 1265a6a5580cSJeff Kirsher enic->msix[i].requested = 0; 1266a6a5580cSJeff Kirsher 1267a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) { 1268a6a5580cSJeff Kirsher err = request_irq(enic->msix_entry[i].vector, 1269a6a5580cSJeff Kirsher enic->msix[i].isr, 0, 1270a6a5580cSJeff Kirsher enic->msix[i].devname, 1271a6a5580cSJeff Kirsher enic->msix[i].devid); 1272a6a5580cSJeff Kirsher if (err) { 1273a6a5580cSJeff Kirsher enic_free_intr(enic); 1274a6a5580cSJeff Kirsher break; 1275a6a5580cSJeff Kirsher } 1276a6a5580cSJeff Kirsher enic->msix[i].requested = 1; 1277a6a5580cSJeff Kirsher } 1278a6a5580cSJeff Kirsher 1279a6a5580cSJeff Kirsher break; 1280a6a5580cSJeff Kirsher 1281a6a5580cSJeff Kirsher default: 1282a6a5580cSJeff Kirsher break; 1283a6a5580cSJeff Kirsher } 1284a6a5580cSJeff Kirsher 1285a6a5580cSJeff Kirsher return err; 1286a6a5580cSJeff Kirsher } 1287a6a5580cSJeff Kirsher 1288a6a5580cSJeff Kirsher static void enic_synchronize_irqs(struct enic *enic) 1289a6a5580cSJeff Kirsher { 1290a6a5580cSJeff Kirsher unsigned int i; 1291a6a5580cSJeff Kirsher 1292a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1293a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1294a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1295a6a5580cSJeff Kirsher synchronize_irq(enic->pdev->irq); 1296a6a5580cSJeff Kirsher break; 1297a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1298a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1299a6a5580cSJeff Kirsher synchronize_irq(enic->msix_entry[i].vector); 1300a6a5580cSJeff Kirsher break; 1301a6a5580cSJeff Kirsher default: 1302a6a5580cSJeff Kirsher break; 1303a6a5580cSJeff Kirsher } 1304a6a5580cSJeff Kirsher } 1305a6a5580cSJeff Kirsher 1306a6a5580cSJeff Kirsher static int enic_dev_notify_set(struct enic *enic) 1307a6a5580cSJeff Kirsher { 1308a6a5580cSJeff Kirsher int err; 1309a6a5580cSJeff Kirsher 1310a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1311a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1312a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1313a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, 1314a6a5580cSJeff Kirsher enic_legacy_notify_intr()); 1315a6a5580cSJeff Kirsher break; 1316a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1317a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, 1318a6a5580cSJeff Kirsher enic_msix_notify_intr(enic)); 1319a6a5580cSJeff Kirsher break; 1320a6a5580cSJeff Kirsher default: 1321a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); 1322a6a5580cSJeff Kirsher break; 1323a6a5580cSJeff Kirsher } 1324a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1325a6a5580cSJeff Kirsher 1326a6a5580cSJeff Kirsher return err; 1327a6a5580cSJeff Kirsher } 1328a6a5580cSJeff Kirsher 1329a6a5580cSJeff Kirsher static void enic_notify_timer_start(struct enic *enic) 1330a6a5580cSJeff Kirsher { 1331a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1332a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1333a6a5580cSJeff Kirsher mod_timer(&enic->notify_timer, jiffies); 1334a6a5580cSJeff Kirsher break; 1335a6a5580cSJeff Kirsher default: 1336a6a5580cSJeff Kirsher /* Using intr for notification for INTx/MSI-X */ 1337a6a5580cSJeff Kirsher break; 1338a6a5580cSJeff Kirsher } 1339a6a5580cSJeff Kirsher } 1340a6a5580cSJeff Kirsher 1341a6a5580cSJeff Kirsher /* rtnl lock is held, process context */ 1342a6a5580cSJeff Kirsher static int enic_open(struct net_device *netdev) 1343a6a5580cSJeff Kirsher { 1344a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1345a6a5580cSJeff Kirsher unsigned int i; 1346a6a5580cSJeff Kirsher int err; 1347a6a5580cSJeff Kirsher 1348a6a5580cSJeff Kirsher err = enic_request_intr(enic); 1349a6a5580cSJeff Kirsher if (err) { 1350a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to request irq.\n"); 1351a6a5580cSJeff Kirsher return err; 1352a6a5580cSJeff Kirsher } 1353a6a5580cSJeff Kirsher 1354a6a5580cSJeff Kirsher err = enic_dev_notify_set(enic); 1355a6a5580cSJeff Kirsher if (err) { 1356a6a5580cSJeff Kirsher netdev_err(netdev, 1357a6a5580cSJeff Kirsher "Failed to alloc notify buffer, aborting.\n"); 1358a6a5580cSJeff Kirsher goto err_out_free_intr; 1359a6a5580cSJeff Kirsher } 1360a6a5580cSJeff Kirsher 1361a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1362a6a5580cSJeff Kirsher vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); 1363a6a5580cSJeff Kirsher /* Need at least one buffer on ring to get going */ 1364a6a5580cSJeff Kirsher if (vnic_rq_desc_used(&enic->rq[i]) == 0) { 1365a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to alloc receive buffers\n"); 1366a6a5580cSJeff Kirsher err = -ENOMEM; 1367a6a5580cSJeff Kirsher goto err_out_notify_unset; 1368a6a5580cSJeff Kirsher } 1369a6a5580cSJeff Kirsher } 1370a6a5580cSJeff Kirsher 1371a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 1372a6a5580cSJeff Kirsher vnic_wq_enable(&enic->wq[i]); 1373a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1374a6a5580cSJeff Kirsher vnic_rq_enable(&enic->rq[i]); 1375a6a5580cSJeff Kirsher 13767335903cSRoopa Prabhu if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) 1377a6a5580cSJeff Kirsher enic_dev_add_station_addr(enic); 13783f192795SRoopa Prabhu 1379a6a5580cSJeff Kirsher enic_set_rx_mode(netdev); 1380a6a5580cSJeff Kirsher 1381822473b6Sgovindarajulu.v netif_tx_wake_all_queues(netdev); 1382a6a5580cSJeff Kirsher 1383a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1384a6a5580cSJeff Kirsher napi_enable(&enic->napi[i]); 1385a6a5580cSJeff Kirsher 1386a6a5580cSJeff Kirsher enic_dev_enable(enic); 1387a6a5580cSJeff Kirsher 1388a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1389a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[i]); 1390a6a5580cSJeff Kirsher 1391a6a5580cSJeff Kirsher enic_notify_timer_start(enic); 1392a6a5580cSJeff Kirsher 1393a6a5580cSJeff Kirsher return 0; 1394a6a5580cSJeff Kirsher 1395a6a5580cSJeff Kirsher err_out_notify_unset: 1396a6a5580cSJeff Kirsher enic_dev_notify_unset(enic); 1397a6a5580cSJeff Kirsher err_out_free_intr: 1398a6a5580cSJeff Kirsher enic_free_intr(enic); 1399a6a5580cSJeff Kirsher 1400a6a5580cSJeff Kirsher return err; 1401a6a5580cSJeff Kirsher } 1402a6a5580cSJeff Kirsher 1403a6a5580cSJeff Kirsher /* rtnl lock is held, process context */ 1404a6a5580cSJeff Kirsher static int enic_stop(struct net_device *netdev) 1405a6a5580cSJeff Kirsher { 1406a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1407a6a5580cSJeff Kirsher unsigned int i; 1408a6a5580cSJeff Kirsher int err; 1409a6a5580cSJeff Kirsher 1410a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) { 1411a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[i]); 1412a6a5580cSJeff Kirsher (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ 1413a6a5580cSJeff Kirsher } 1414a6a5580cSJeff Kirsher 1415a6a5580cSJeff Kirsher enic_synchronize_irqs(enic); 1416a6a5580cSJeff Kirsher 1417a6a5580cSJeff Kirsher del_timer_sync(&enic->notify_timer); 1418a6a5580cSJeff Kirsher 1419a6a5580cSJeff Kirsher enic_dev_disable(enic); 1420a6a5580cSJeff Kirsher 1421a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1422a6a5580cSJeff Kirsher napi_disable(&enic->napi[i]); 1423a6a5580cSJeff Kirsher 1424a6a5580cSJeff Kirsher netif_carrier_off(netdev); 1425a6a5580cSJeff Kirsher netif_tx_disable(netdev); 14263f192795SRoopa Prabhu 14277335903cSRoopa Prabhu if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) 1428a6a5580cSJeff Kirsher enic_dev_del_station_addr(enic); 1429a6a5580cSJeff Kirsher 1430a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1431a6a5580cSJeff Kirsher err = vnic_wq_disable(&enic->wq[i]); 1432a6a5580cSJeff Kirsher if (err) 1433a6a5580cSJeff Kirsher return err; 1434a6a5580cSJeff Kirsher } 1435a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1436a6a5580cSJeff Kirsher err = vnic_rq_disable(&enic->rq[i]); 1437a6a5580cSJeff Kirsher if (err) 1438a6a5580cSJeff Kirsher return err; 1439a6a5580cSJeff Kirsher } 1440a6a5580cSJeff Kirsher 1441a6a5580cSJeff Kirsher enic_dev_notify_unset(enic); 1442a6a5580cSJeff Kirsher enic_free_intr(enic); 1443a6a5580cSJeff Kirsher 1444a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 1445a6a5580cSJeff Kirsher vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); 1446a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1447a6a5580cSJeff Kirsher vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); 1448a6a5580cSJeff Kirsher for (i = 0; i < enic->cq_count; i++) 1449a6a5580cSJeff Kirsher vnic_cq_clean(&enic->cq[i]); 1450a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1451a6a5580cSJeff Kirsher vnic_intr_clean(&enic->intr[i]); 1452a6a5580cSJeff Kirsher 1453a6a5580cSJeff Kirsher return 0; 1454a6a5580cSJeff Kirsher } 1455a6a5580cSJeff Kirsher 1456a6a5580cSJeff Kirsher static int enic_change_mtu(struct net_device *netdev, int new_mtu) 1457a6a5580cSJeff Kirsher { 1458a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1459a6a5580cSJeff Kirsher int running = netif_running(netdev); 1460a6a5580cSJeff Kirsher 1461a6a5580cSJeff Kirsher if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) 1462a6a5580cSJeff Kirsher return -EINVAL; 1463a6a5580cSJeff Kirsher 14647335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) 1465a6a5580cSJeff Kirsher return -EOPNOTSUPP; 1466a6a5580cSJeff Kirsher 1467a6a5580cSJeff Kirsher if (running) 1468a6a5580cSJeff Kirsher enic_stop(netdev); 1469a6a5580cSJeff Kirsher 1470a6a5580cSJeff Kirsher netdev->mtu = new_mtu; 1471a6a5580cSJeff Kirsher 1472a6a5580cSJeff Kirsher if (netdev->mtu > enic->port_mtu) 1473a6a5580cSJeff Kirsher netdev_warn(netdev, 1474a6a5580cSJeff Kirsher "interface MTU (%d) set higher than port MTU (%d)\n", 1475a6a5580cSJeff Kirsher netdev->mtu, enic->port_mtu); 1476a6a5580cSJeff Kirsher 1477a6a5580cSJeff Kirsher if (running) 1478a6a5580cSJeff Kirsher enic_open(netdev); 1479a6a5580cSJeff Kirsher 1480a6a5580cSJeff Kirsher return 0; 1481a6a5580cSJeff Kirsher } 1482a6a5580cSJeff Kirsher 1483a6a5580cSJeff Kirsher static void enic_change_mtu_work(struct work_struct *work) 1484a6a5580cSJeff Kirsher { 1485a6a5580cSJeff Kirsher struct enic *enic = container_of(work, struct enic, change_mtu_work); 1486a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1487a6a5580cSJeff Kirsher int new_mtu = vnic_dev_mtu(enic->vdev); 1488a6a5580cSJeff Kirsher int err; 1489a6a5580cSJeff Kirsher unsigned int i; 1490a6a5580cSJeff Kirsher 1491a6a5580cSJeff Kirsher new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); 1492a6a5580cSJeff Kirsher 1493a6a5580cSJeff Kirsher rtnl_lock(); 1494a6a5580cSJeff Kirsher 1495a6a5580cSJeff Kirsher /* Stop RQ */ 1496a6a5580cSJeff Kirsher del_timer_sync(&enic->notify_timer); 1497a6a5580cSJeff Kirsher 1498a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1499a6a5580cSJeff Kirsher napi_disable(&enic->napi[i]); 1500a6a5580cSJeff Kirsher 1501a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[0]); 1502a6a5580cSJeff Kirsher enic_synchronize_irqs(enic); 1503a6a5580cSJeff Kirsher err = vnic_rq_disable(&enic->rq[0]); 1504a6a5580cSJeff Kirsher if (err) { 1505e057590bSKonstantin Khlebnikov rtnl_unlock(); 1506a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to disable RQ.\n"); 1507a6a5580cSJeff Kirsher return; 1508a6a5580cSJeff Kirsher } 1509a6a5580cSJeff Kirsher vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); 1510a6a5580cSJeff Kirsher vnic_cq_clean(&enic->cq[0]); 1511a6a5580cSJeff Kirsher vnic_intr_clean(&enic->intr[0]); 1512a6a5580cSJeff Kirsher 1513a6a5580cSJeff Kirsher /* Fill RQ with new_mtu-sized buffers */ 1514a6a5580cSJeff Kirsher netdev->mtu = new_mtu; 1515a6a5580cSJeff Kirsher vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); 1516a6a5580cSJeff Kirsher /* Need at least one buffer on ring to get going */ 1517a6a5580cSJeff Kirsher if (vnic_rq_desc_used(&enic->rq[0]) == 0) { 1518e057590bSKonstantin Khlebnikov rtnl_unlock(); 1519a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to alloc receive buffers.\n"); 1520a6a5580cSJeff Kirsher return; 1521a6a5580cSJeff Kirsher } 1522a6a5580cSJeff Kirsher 1523a6a5580cSJeff Kirsher /* Start RQ */ 1524a6a5580cSJeff Kirsher vnic_rq_enable(&enic->rq[0]); 1525a6a5580cSJeff Kirsher napi_enable(&enic->napi[0]); 1526a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[0]); 1527a6a5580cSJeff Kirsher enic_notify_timer_start(enic); 1528a6a5580cSJeff Kirsher 1529a6a5580cSJeff Kirsher rtnl_unlock(); 1530a6a5580cSJeff Kirsher 1531a6a5580cSJeff Kirsher netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); 1532a6a5580cSJeff Kirsher } 1533a6a5580cSJeff Kirsher 1534a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 1535a6a5580cSJeff Kirsher static void enic_poll_controller(struct net_device *netdev) 1536a6a5580cSJeff Kirsher { 1537a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1538a6a5580cSJeff Kirsher struct vnic_dev *vdev = enic->vdev; 1539a6a5580cSJeff Kirsher unsigned int i, intr; 1540a6a5580cSJeff Kirsher 1541a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(vdev)) { 1542a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1543a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1544a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 1545a6a5580cSJeff Kirsher enic_isr_msix_rq(enic->msix_entry[intr].vector, 1546a6a5580cSJeff Kirsher &enic->napi[i]); 1547a6a5580cSJeff Kirsher } 1548a6a5580cSJeff Kirsher 1549a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1550a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 1551a6a5580cSJeff Kirsher enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); 1552a6a5580cSJeff Kirsher } 1553a6a5580cSJeff Kirsher 1554a6a5580cSJeff Kirsher break; 1555a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1556a6a5580cSJeff Kirsher enic_isr_msi(enic->pdev->irq, enic); 1557a6a5580cSJeff Kirsher break; 1558a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1559a6a5580cSJeff Kirsher enic_isr_legacy(enic->pdev->irq, netdev); 1560a6a5580cSJeff Kirsher break; 1561a6a5580cSJeff Kirsher default: 1562a6a5580cSJeff Kirsher break; 1563a6a5580cSJeff Kirsher } 1564a6a5580cSJeff Kirsher } 1565a6a5580cSJeff Kirsher #endif 1566a6a5580cSJeff Kirsher 1567a6a5580cSJeff Kirsher static int enic_dev_wait(struct vnic_dev *vdev, 1568a6a5580cSJeff Kirsher int (*start)(struct vnic_dev *, int), 1569a6a5580cSJeff Kirsher int (*finished)(struct vnic_dev *, int *), 1570a6a5580cSJeff Kirsher int arg) 1571a6a5580cSJeff Kirsher { 1572a6a5580cSJeff Kirsher unsigned long time; 1573a6a5580cSJeff Kirsher int done; 1574a6a5580cSJeff Kirsher int err; 1575a6a5580cSJeff Kirsher 1576a6a5580cSJeff Kirsher BUG_ON(in_interrupt()); 1577a6a5580cSJeff Kirsher 1578a6a5580cSJeff Kirsher err = start(vdev, arg); 1579a6a5580cSJeff Kirsher if (err) 1580a6a5580cSJeff Kirsher return err; 1581a6a5580cSJeff Kirsher 1582a6a5580cSJeff Kirsher /* Wait for func to complete...2 seconds max 1583a6a5580cSJeff Kirsher */ 1584a6a5580cSJeff Kirsher 1585a6a5580cSJeff Kirsher time = jiffies + (HZ * 2); 1586a6a5580cSJeff Kirsher do { 1587a6a5580cSJeff Kirsher 1588a6a5580cSJeff Kirsher err = finished(vdev, &done); 1589a6a5580cSJeff Kirsher if (err) 1590a6a5580cSJeff Kirsher return err; 1591a6a5580cSJeff Kirsher 1592a6a5580cSJeff Kirsher if (done) 1593a6a5580cSJeff Kirsher return 0; 1594a6a5580cSJeff Kirsher 1595a6a5580cSJeff Kirsher schedule_timeout_uninterruptible(HZ / 10); 1596a6a5580cSJeff Kirsher 1597a6a5580cSJeff Kirsher } while (time_after(time, jiffies)); 1598a6a5580cSJeff Kirsher 1599a6a5580cSJeff Kirsher return -ETIMEDOUT; 1600a6a5580cSJeff Kirsher } 1601a6a5580cSJeff Kirsher 1602a6a5580cSJeff Kirsher static int enic_dev_open(struct enic *enic) 1603a6a5580cSJeff Kirsher { 1604a6a5580cSJeff Kirsher int err; 1605a6a5580cSJeff Kirsher 1606a6a5580cSJeff Kirsher err = enic_dev_wait(enic->vdev, vnic_dev_open, 1607a6a5580cSJeff Kirsher vnic_dev_open_done, 0); 1608a6a5580cSJeff Kirsher if (err) 1609a6a5580cSJeff Kirsher dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", 1610a6a5580cSJeff Kirsher err); 1611a6a5580cSJeff Kirsher 1612a6a5580cSJeff Kirsher return err; 1613a6a5580cSJeff Kirsher } 1614a6a5580cSJeff Kirsher 1615a6a5580cSJeff Kirsher static int enic_dev_hang_reset(struct enic *enic) 1616a6a5580cSJeff Kirsher { 1617a6a5580cSJeff Kirsher int err; 1618a6a5580cSJeff Kirsher 1619a6a5580cSJeff Kirsher err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, 1620a6a5580cSJeff Kirsher vnic_dev_hang_reset_done, 0); 1621a6a5580cSJeff Kirsher if (err) 1622a6a5580cSJeff Kirsher netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", 1623a6a5580cSJeff Kirsher err); 1624a6a5580cSJeff Kirsher 1625a6a5580cSJeff Kirsher return err; 1626a6a5580cSJeff Kirsher } 1627a6a5580cSJeff Kirsher 1628a6a5580cSJeff Kirsher static int enic_set_rsskey(struct enic *enic) 1629a6a5580cSJeff Kirsher { 1630a6a5580cSJeff Kirsher dma_addr_t rss_key_buf_pa; 1631a6a5580cSJeff Kirsher union vnic_rss_key *rss_key_buf_va = NULL; 1632a6a5580cSJeff Kirsher union vnic_rss_key rss_key = { 1633a6a5580cSJeff Kirsher .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, 1634a6a5580cSJeff Kirsher .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, 1635a6a5580cSJeff Kirsher .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, 1636a6a5580cSJeff Kirsher .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, 1637a6a5580cSJeff Kirsher }; 1638a6a5580cSJeff Kirsher int err; 1639a6a5580cSJeff Kirsher 1640a6a5580cSJeff Kirsher rss_key_buf_va = pci_alloc_consistent(enic->pdev, 1641a6a5580cSJeff Kirsher sizeof(union vnic_rss_key), &rss_key_buf_pa); 1642a6a5580cSJeff Kirsher if (!rss_key_buf_va) 1643a6a5580cSJeff Kirsher return -ENOMEM; 1644a6a5580cSJeff Kirsher 1645a6a5580cSJeff Kirsher memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); 1646a6a5580cSJeff Kirsher 1647a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1648a6a5580cSJeff Kirsher err = enic_set_rss_key(enic, 1649a6a5580cSJeff Kirsher rss_key_buf_pa, 1650a6a5580cSJeff Kirsher sizeof(union vnic_rss_key)); 1651a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1652a6a5580cSJeff Kirsher 1653a6a5580cSJeff Kirsher pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), 1654a6a5580cSJeff Kirsher rss_key_buf_va, rss_key_buf_pa); 1655a6a5580cSJeff Kirsher 1656a6a5580cSJeff Kirsher return err; 1657a6a5580cSJeff Kirsher } 1658a6a5580cSJeff Kirsher 1659a6a5580cSJeff Kirsher static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) 1660a6a5580cSJeff Kirsher { 1661a6a5580cSJeff Kirsher dma_addr_t rss_cpu_buf_pa; 1662a6a5580cSJeff Kirsher union vnic_rss_cpu *rss_cpu_buf_va = NULL; 1663a6a5580cSJeff Kirsher unsigned int i; 1664a6a5580cSJeff Kirsher int err; 1665a6a5580cSJeff Kirsher 1666a6a5580cSJeff Kirsher rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, 1667a6a5580cSJeff Kirsher sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); 1668a6a5580cSJeff Kirsher if (!rss_cpu_buf_va) 1669a6a5580cSJeff Kirsher return -ENOMEM; 1670a6a5580cSJeff Kirsher 1671a6a5580cSJeff Kirsher for (i = 0; i < (1 << rss_hash_bits); i++) 1672a6a5580cSJeff Kirsher (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; 1673a6a5580cSJeff Kirsher 1674a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1675a6a5580cSJeff Kirsher err = enic_set_rss_cpu(enic, 1676a6a5580cSJeff Kirsher rss_cpu_buf_pa, 1677a6a5580cSJeff Kirsher sizeof(union vnic_rss_cpu)); 1678a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1679a6a5580cSJeff Kirsher 1680a6a5580cSJeff Kirsher pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), 1681a6a5580cSJeff Kirsher rss_cpu_buf_va, rss_cpu_buf_pa); 1682a6a5580cSJeff Kirsher 1683a6a5580cSJeff Kirsher return err; 1684a6a5580cSJeff Kirsher } 1685a6a5580cSJeff Kirsher 1686a6a5580cSJeff Kirsher static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, 1687a6a5580cSJeff Kirsher u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) 1688a6a5580cSJeff Kirsher { 1689a6a5580cSJeff Kirsher const u8 tso_ipid_split_en = 0; 1690a6a5580cSJeff Kirsher const u8 ig_vlan_strip_en = 1; 1691a6a5580cSJeff Kirsher int err; 1692a6a5580cSJeff Kirsher 1693a6a5580cSJeff Kirsher /* Enable VLAN tag stripping. 1694a6a5580cSJeff Kirsher */ 1695a6a5580cSJeff Kirsher 1696a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1697a6a5580cSJeff Kirsher err = enic_set_nic_cfg(enic, 1698a6a5580cSJeff Kirsher rss_default_cpu, rss_hash_type, 1699a6a5580cSJeff Kirsher rss_hash_bits, rss_base_cpu, 1700a6a5580cSJeff Kirsher rss_enable, tso_ipid_split_en, 1701a6a5580cSJeff Kirsher ig_vlan_strip_en); 1702a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1703a6a5580cSJeff Kirsher 1704a6a5580cSJeff Kirsher return err; 1705a6a5580cSJeff Kirsher } 1706a6a5580cSJeff Kirsher 1707a6a5580cSJeff Kirsher static int enic_set_rss_nic_cfg(struct enic *enic) 1708a6a5580cSJeff Kirsher { 1709a6a5580cSJeff Kirsher struct device *dev = enic_get_dev(enic); 1710a6a5580cSJeff Kirsher const u8 rss_default_cpu = 0; 1711a6a5580cSJeff Kirsher const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | 1712a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | 1713a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_IPV6 | 1714a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; 1715a6a5580cSJeff Kirsher const u8 rss_hash_bits = 7; 1716a6a5580cSJeff Kirsher const u8 rss_base_cpu = 0; 1717a6a5580cSJeff Kirsher u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); 1718a6a5580cSJeff Kirsher 1719a6a5580cSJeff Kirsher if (rss_enable) { 1720a6a5580cSJeff Kirsher if (!enic_set_rsskey(enic)) { 1721a6a5580cSJeff Kirsher if (enic_set_rsscpu(enic, rss_hash_bits)) { 1722a6a5580cSJeff Kirsher rss_enable = 0; 1723a6a5580cSJeff Kirsher dev_warn(dev, "RSS disabled, " 1724a6a5580cSJeff Kirsher "Failed to set RSS cpu indirection table."); 1725a6a5580cSJeff Kirsher } 1726a6a5580cSJeff Kirsher } else { 1727a6a5580cSJeff Kirsher rss_enable = 0; 1728a6a5580cSJeff Kirsher dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); 1729a6a5580cSJeff Kirsher } 1730a6a5580cSJeff Kirsher } 1731a6a5580cSJeff Kirsher 1732a6a5580cSJeff Kirsher return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, 1733a6a5580cSJeff Kirsher rss_hash_bits, rss_base_cpu, rss_enable); 1734a6a5580cSJeff Kirsher } 1735a6a5580cSJeff Kirsher 1736a6a5580cSJeff Kirsher static void enic_reset(struct work_struct *work) 1737a6a5580cSJeff Kirsher { 1738a6a5580cSJeff Kirsher struct enic *enic = container_of(work, struct enic, reset); 1739a6a5580cSJeff Kirsher 1740a6a5580cSJeff Kirsher if (!netif_running(enic->netdev)) 1741a6a5580cSJeff Kirsher return; 1742a6a5580cSJeff Kirsher 1743a6a5580cSJeff Kirsher rtnl_lock(); 1744a6a5580cSJeff Kirsher 17450b038566SNeel Patel spin_lock(&enic->enic_api_lock); 1746a6a5580cSJeff Kirsher enic_dev_hang_notify(enic); 1747a6a5580cSJeff Kirsher enic_stop(enic->netdev); 1748a6a5580cSJeff Kirsher enic_dev_hang_reset(enic); 1749a6a5580cSJeff Kirsher enic_reset_addr_lists(enic); 1750a6a5580cSJeff Kirsher enic_init_vnic_resources(enic); 1751a6a5580cSJeff Kirsher enic_set_rss_nic_cfg(enic); 1752a6a5580cSJeff Kirsher enic_dev_set_ig_vlan_rewrite_mode(enic); 1753a6a5580cSJeff Kirsher enic_open(enic->netdev); 17540b038566SNeel Patel spin_unlock(&enic->enic_api_lock); 1755d765bb41SNeel Patel call_netdevice_notifiers(NETDEV_REBOOT, enic->netdev); 1756a6a5580cSJeff Kirsher 1757a6a5580cSJeff Kirsher rtnl_unlock(); 1758a6a5580cSJeff Kirsher } 1759a6a5580cSJeff Kirsher 1760a6a5580cSJeff Kirsher static int enic_set_intr_mode(struct enic *enic) 1761a6a5580cSJeff Kirsher { 1762a6a5580cSJeff Kirsher unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); 1763a6a5580cSJeff Kirsher unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); 1764a6a5580cSJeff Kirsher unsigned int i; 1765a6a5580cSJeff Kirsher 1766a6a5580cSJeff Kirsher /* Set interrupt mode (INTx, MSI, MSI-X) depending 1767a6a5580cSJeff Kirsher * on system capabilities. 1768a6a5580cSJeff Kirsher * 1769a6a5580cSJeff Kirsher * Try MSI-X first 1770a6a5580cSJeff Kirsher * 1771a6a5580cSJeff Kirsher * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs 1772a6a5580cSJeff Kirsher * (the second to last INTR is used for WQ/RQ errors) 1773a6a5580cSJeff Kirsher * (the last INTR is used for notifications) 1774a6a5580cSJeff Kirsher */ 1775a6a5580cSJeff Kirsher 1776a6a5580cSJeff Kirsher BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); 1777a6a5580cSJeff Kirsher for (i = 0; i < n + m + 2; i++) 1778a6a5580cSJeff Kirsher enic->msix_entry[i].entry = i; 1779a6a5580cSJeff Kirsher 1780a6a5580cSJeff Kirsher /* Use multiple RQs if RSS is enabled 1781a6a5580cSJeff Kirsher */ 1782a6a5580cSJeff Kirsher 1783a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, RSS) && 1784a6a5580cSJeff Kirsher enic->config.intr_mode < 1 && 1785a6a5580cSJeff Kirsher enic->rq_count >= n && 1786a6a5580cSJeff Kirsher enic->wq_count >= m && 1787a6a5580cSJeff Kirsher enic->cq_count >= n + m && 1788a6a5580cSJeff Kirsher enic->intr_count >= n + m + 2) { 1789a6a5580cSJeff Kirsher 1790a6a5580cSJeff Kirsher if (!pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) { 1791a6a5580cSJeff Kirsher 1792a6a5580cSJeff Kirsher enic->rq_count = n; 1793a6a5580cSJeff Kirsher enic->wq_count = m; 1794a6a5580cSJeff Kirsher enic->cq_count = n + m; 1795a6a5580cSJeff Kirsher enic->intr_count = n + m + 2; 1796a6a5580cSJeff Kirsher 1797a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, 1798a6a5580cSJeff Kirsher VNIC_DEV_INTR_MODE_MSIX); 1799a6a5580cSJeff Kirsher 1800a6a5580cSJeff Kirsher return 0; 1801a6a5580cSJeff Kirsher } 1802a6a5580cSJeff Kirsher } 1803a6a5580cSJeff Kirsher 1804a6a5580cSJeff Kirsher if (enic->config.intr_mode < 1 && 1805a6a5580cSJeff Kirsher enic->rq_count >= 1 && 1806a6a5580cSJeff Kirsher enic->wq_count >= m && 1807a6a5580cSJeff Kirsher enic->cq_count >= 1 + m && 1808a6a5580cSJeff Kirsher enic->intr_count >= 1 + m + 2) { 1809a6a5580cSJeff Kirsher if (!pci_enable_msix(enic->pdev, enic->msix_entry, 1 + m + 2)) { 1810a6a5580cSJeff Kirsher 1811a6a5580cSJeff Kirsher enic->rq_count = 1; 1812a6a5580cSJeff Kirsher enic->wq_count = m; 1813a6a5580cSJeff Kirsher enic->cq_count = 1 + m; 1814a6a5580cSJeff Kirsher enic->intr_count = 1 + m + 2; 1815a6a5580cSJeff Kirsher 1816a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, 1817a6a5580cSJeff Kirsher VNIC_DEV_INTR_MODE_MSIX); 1818a6a5580cSJeff Kirsher 1819a6a5580cSJeff Kirsher return 0; 1820a6a5580cSJeff Kirsher } 1821a6a5580cSJeff Kirsher } 1822a6a5580cSJeff Kirsher 1823a6a5580cSJeff Kirsher /* Next try MSI 1824a6a5580cSJeff Kirsher * 1825a6a5580cSJeff Kirsher * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR 1826a6a5580cSJeff Kirsher */ 1827a6a5580cSJeff Kirsher 1828a6a5580cSJeff Kirsher if (enic->config.intr_mode < 2 && 1829a6a5580cSJeff Kirsher enic->rq_count >= 1 && 1830a6a5580cSJeff Kirsher enic->wq_count >= 1 && 1831a6a5580cSJeff Kirsher enic->cq_count >= 2 && 1832a6a5580cSJeff Kirsher enic->intr_count >= 1 && 1833a6a5580cSJeff Kirsher !pci_enable_msi(enic->pdev)) { 1834a6a5580cSJeff Kirsher 1835a6a5580cSJeff Kirsher enic->rq_count = 1; 1836a6a5580cSJeff Kirsher enic->wq_count = 1; 1837a6a5580cSJeff Kirsher enic->cq_count = 2; 1838a6a5580cSJeff Kirsher enic->intr_count = 1; 1839a6a5580cSJeff Kirsher 1840a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); 1841a6a5580cSJeff Kirsher 1842a6a5580cSJeff Kirsher return 0; 1843a6a5580cSJeff Kirsher } 1844a6a5580cSJeff Kirsher 1845a6a5580cSJeff Kirsher /* Next try INTx 1846a6a5580cSJeff Kirsher * 1847a6a5580cSJeff Kirsher * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs 1848a6a5580cSJeff Kirsher * (the first INTR is used for WQ/RQ) 1849a6a5580cSJeff Kirsher * (the second INTR is used for WQ/RQ errors) 1850a6a5580cSJeff Kirsher * (the last INTR is used for notifications) 1851a6a5580cSJeff Kirsher */ 1852a6a5580cSJeff Kirsher 1853a6a5580cSJeff Kirsher if (enic->config.intr_mode < 3 && 1854a6a5580cSJeff Kirsher enic->rq_count >= 1 && 1855a6a5580cSJeff Kirsher enic->wq_count >= 1 && 1856a6a5580cSJeff Kirsher enic->cq_count >= 2 && 1857a6a5580cSJeff Kirsher enic->intr_count >= 3) { 1858a6a5580cSJeff Kirsher 1859a6a5580cSJeff Kirsher enic->rq_count = 1; 1860a6a5580cSJeff Kirsher enic->wq_count = 1; 1861a6a5580cSJeff Kirsher enic->cq_count = 2; 1862a6a5580cSJeff Kirsher enic->intr_count = 3; 1863a6a5580cSJeff Kirsher 1864a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); 1865a6a5580cSJeff Kirsher 1866a6a5580cSJeff Kirsher return 0; 1867a6a5580cSJeff Kirsher } 1868a6a5580cSJeff Kirsher 1869a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); 1870a6a5580cSJeff Kirsher 1871a6a5580cSJeff Kirsher return -EINVAL; 1872a6a5580cSJeff Kirsher } 1873a6a5580cSJeff Kirsher 1874a6a5580cSJeff Kirsher static void enic_clear_intr_mode(struct enic *enic) 1875a6a5580cSJeff Kirsher { 1876a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1877a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1878a6a5580cSJeff Kirsher pci_disable_msix(enic->pdev); 1879a6a5580cSJeff Kirsher break; 1880a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1881a6a5580cSJeff Kirsher pci_disable_msi(enic->pdev); 1882a6a5580cSJeff Kirsher break; 1883a6a5580cSJeff Kirsher default: 1884a6a5580cSJeff Kirsher break; 1885a6a5580cSJeff Kirsher } 1886a6a5580cSJeff Kirsher 1887a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); 1888a6a5580cSJeff Kirsher } 1889a6a5580cSJeff Kirsher 1890a6a5580cSJeff Kirsher static const struct net_device_ops enic_netdev_dynamic_ops = { 1891a6a5580cSJeff Kirsher .ndo_open = enic_open, 1892a6a5580cSJeff Kirsher .ndo_stop = enic_stop, 1893a6a5580cSJeff Kirsher .ndo_start_xmit = enic_hard_start_xmit, 1894a6a5580cSJeff Kirsher .ndo_get_stats64 = enic_get_stats, 1895a6a5580cSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 1896a6a5580cSJeff Kirsher .ndo_set_rx_mode = enic_set_rx_mode, 1897a6a5580cSJeff Kirsher .ndo_set_mac_address = enic_set_mac_address_dynamic, 1898a6a5580cSJeff Kirsher .ndo_change_mtu = enic_change_mtu, 1899a6a5580cSJeff Kirsher .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, 1900a6a5580cSJeff Kirsher .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, 1901a6a5580cSJeff Kirsher .ndo_tx_timeout = enic_tx_timeout, 1902a6a5580cSJeff Kirsher .ndo_set_vf_port = enic_set_vf_port, 1903a6a5580cSJeff Kirsher .ndo_get_vf_port = enic_get_vf_port, 1904a6a5580cSJeff Kirsher .ndo_set_vf_mac = enic_set_vf_mac, 1905a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 1906a6a5580cSJeff Kirsher .ndo_poll_controller = enic_poll_controller, 1907a6a5580cSJeff Kirsher #endif 1908a6a5580cSJeff Kirsher }; 1909a6a5580cSJeff Kirsher 1910a6a5580cSJeff Kirsher static const struct net_device_ops enic_netdev_ops = { 1911a6a5580cSJeff Kirsher .ndo_open = enic_open, 1912a6a5580cSJeff Kirsher .ndo_stop = enic_stop, 1913a6a5580cSJeff Kirsher .ndo_start_xmit = enic_hard_start_xmit, 1914a6a5580cSJeff Kirsher .ndo_get_stats64 = enic_get_stats, 1915a6a5580cSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 1916a6a5580cSJeff Kirsher .ndo_set_mac_address = enic_set_mac_address, 1917a6a5580cSJeff Kirsher .ndo_set_rx_mode = enic_set_rx_mode, 1918a6a5580cSJeff Kirsher .ndo_change_mtu = enic_change_mtu, 1919a6a5580cSJeff Kirsher .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, 1920a6a5580cSJeff Kirsher .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, 1921a6a5580cSJeff Kirsher .ndo_tx_timeout = enic_tx_timeout, 19223f192795SRoopa Prabhu .ndo_set_vf_port = enic_set_vf_port, 19233f192795SRoopa Prabhu .ndo_get_vf_port = enic_get_vf_port, 19243f192795SRoopa Prabhu .ndo_set_vf_mac = enic_set_vf_mac, 1925a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 1926a6a5580cSJeff Kirsher .ndo_poll_controller = enic_poll_controller, 1927a6a5580cSJeff Kirsher #endif 1928a6a5580cSJeff Kirsher }; 1929a6a5580cSJeff Kirsher 1930a6a5580cSJeff Kirsher static void enic_dev_deinit(struct enic *enic) 1931a6a5580cSJeff Kirsher { 1932a6a5580cSJeff Kirsher unsigned int i; 1933a6a5580cSJeff Kirsher 1934a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1935a6a5580cSJeff Kirsher netif_napi_del(&enic->napi[i]); 1936a6a5580cSJeff Kirsher 1937a6a5580cSJeff Kirsher enic_free_vnic_resources(enic); 1938a6a5580cSJeff Kirsher enic_clear_intr_mode(enic); 1939a6a5580cSJeff Kirsher } 1940a6a5580cSJeff Kirsher 1941a6a5580cSJeff Kirsher static int enic_dev_init(struct enic *enic) 1942a6a5580cSJeff Kirsher { 1943a6a5580cSJeff Kirsher struct device *dev = enic_get_dev(enic); 1944a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1945a6a5580cSJeff Kirsher unsigned int i; 1946a6a5580cSJeff Kirsher int err; 1947a6a5580cSJeff Kirsher 1948a6a5580cSJeff Kirsher /* Get interrupt coalesce timer info */ 1949a6a5580cSJeff Kirsher err = enic_dev_intr_coal_timer_info(enic); 1950a6a5580cSJeff Kirsher if (err) { 1951a6a5580cSJeff Kirsher dev_warn(dev, "Using default conversion factor for " 1952a6a5580cSJeff Kirsher "interrupt coalesce timer\n"); 1953a6a5580cSJeff Kirsher vnic_dev_intr_coal_timer_info_default(enic->vdev); 1954a6a5580cSJeff Kirsher } 1955a6a5580cSJeff Kirsher 1956a6a5580cSJeff Kirsher /* Get vNIC configuration 1957a6a5580cSJeff Kirsher */ 1958a6a5580cSJeff Kirsher 1959a6a5580cSJeff Kirsher err = enic_get_vnic_config(enic); 1960a6a5580cSJeff Kirsher if (err) { 1961a6a5580cSJeff Kirsher dev_err(dev, "Get vNIC configuration failed, aborting\n"); 1962a6a5580cSJeff Kirsher return err; 1963a6a5580cSJeff Kirsher } 1964a6a5580cSJeff Kirsher 1965a6a5580cSJeff Kirsher /* Get available resource counts 1966a6a5580cSJeff Kirsher */ 1967a6a5580cSJeff Kirsher 1968a6a5580cSJeff Kirsher enic_get_res_counts(enic); 1969a6a5580cSJeff Kirsher 1970a6a5580cSJeff Kirsher /* Set interrupt mode based on resource counts and system 1971a6a5580cSJeff Kirsher * capabilities 1972a6a5580cSJeff Kirsher */ 1973a6a5580cSJeff Kirsher 1974a6a5580cSJeff Kirsher err = enic_set_intr_mode(enic); 1975a6a5580cSJeff Kirsher if (err) { 1976a6a5580cSJeff Kirsher dev_err(dev, "Failed to set intr mode based on resource " 1977a6a5580cSJeff Kirsher "counts and system capabilities, aborting\n"); 1978a6a5580cSJeff Kirsher return err; 1979a6a5580cSJeff Kirsher } 1980a6a5580cSJeff Kirsher 1981a6a5580cSJeff Kirsher /* Allocate and configure vNIC resources 1982a6a5580cSJeff Kirsher */ 1983a6a5580cSJeff Kirsher 1984a6a5580cSJeff Kirsher err = enic_alloc_vnic_resources(enic); 1985a6a5580cSJeff Kirsher if (err) { 1986a6a5580cSJeff Kirsher dev_err(dev, "Failed to alloc vNIC resources, aborting\n"); 1987a6a5580cSJeff Kirsher goto err_out_free_vnic_resources; 1988a6a5580cSJeff Kirsher } 1989a6a5580cSJeff Kirsher 1990a6a5580cSJeff Kirsher enic_init_vnic_resources(enic); 1991a6a5580cSJeff Kirsher 1992a6a5580cSJeff Kirsher err = enic_set_rss_nic_cfg(enic); 1993a6a5580cSJeff Kirsher if (err) { 1994a6a5580cSJeff Kirsher dev_err(dev, "Failed to config nic, aborting\n"); 1995a6a5580cSJeff Kirsher goto err_out_free_vnic_resources; 1996a6a5580cSJeff Kirsher } 1997a6a5580cSJeff Kirsher 1998a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1999a6a5580cSJeff Kirsher default: 2000a6a5580cSJeff Kirsher netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); 2001a6a5580cSJeff Kirsher break; 2002a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 2003a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 2004a6a5580cSJeff Kirsher netif_napi_add(netdev, &enic->napi[i], 2005a6a5580cSJeff Kirsher enic_poll_msix, 64); 2006a6a5580cSJeff Kirsher break; 2007a6a5580cSJeff Kirsher } 2008a6a5580cSJeff Kirsher 2009a6a5580cSJeff Kirsher return 0; 2010a6a5580cSJeff Kirsher 2011a6a5580cSJeff Kirsher err_out_free_vnic_resources: 2012a6a5580cSJeff Kirsher enic_clear_intr_mode(enic); 2013a6a5580cSJeff Kirsher enic_free_vnic_resources(enic); 2014a6a5580cSJeff Kirsher 2015a6a5580cSJeff Kirsher return err; 2016a6a5580cSJeff Kirsher } 2017a6a5580cSJeff Kirsher 2018a6a5580cSJeff Kirsher static void enic_iounmap(struct enic *enic) 2019a6a5580cSJeff Kirsher { 2020a6a5580cSJeff Kirsher unsigned int i; 2021a6a5580cSJeff Kirsher 2022a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->bar); i++) 2023a6a5580cSJeff Kirsher if (enic->bar[i].vaddr) 2024a6a5580cSJeff Kirsher iounmap(enic->bar[i].vaddr); 2025a6a5580cSJeff Kirsher } 2026a6a5580cSJeff Kirsher 20271dd06ae8SGreg Kroah-Hartman static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2028a6a5580cSJeff Kirsher { 2029a6a5580cSJeff Kirsher struct device *dev = &pdev->dev; 2030a6a5580cSJeff Kirsher struct net_device *netdev; 2031a6a5580cSJeff Kirsher struct enic *enic; 2032a6a5580cSJeff Kirsher int using_dac = 0; 2033a6a5580cSJeff Kirsher unsigned int i; 2034a6a5580cSJeff Kirsher int err; 20358749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 20368749b427SRoopa Prabhu int pos = 0; 20378749b427SRoopa Prabhu #endif 2038b67f231dSRoopa Prabhu int num_pps = 1; 2039a6a5580cSJeff Kirsher 2040a6a5580cSJeff Kirsher /* Allocate net device structure and initialize. Private 2041a6a5580cSJeff Kirsher * instance data is initialized to zero. 2042a6a5580cSJeff Kirsher */ 2043a6a5580cSJeff Kirsher 2044822473b6Sgovindarajulu.v netdev = alloc_etherdev_mqs(sizeof(struct enic), 2045822473b6Sgovindarajulu.v ENIC_RQ_MAX, ENIC_WQ_MAX); 204641de8d4cSJoe Perches if (!netdev) 2047a6a5580cSJeff Kirsher return -ENOMEM; 2048a6a5580cSJeff Kirsher 2049a6a5580cSJeff Kirsher pci_set_drvdata(pdev, netdev); 2050a6a5580cSJeff Kirsher 2051a6a5580cSJeff Kirsher SET_NETDEV_DEV(netdev, &pdev->dev); 2052a6a5580cSJeff Kirsher 2053a6a5580cSJeff Kirsher enic = netdev_priv(netdev); 2054a6a5580cSJeff Kirsher enic->netdev = netdev; 2055a6a5580cSJeff Kirsher enic->pdev = pdev; 2056a6a5580cSJeff Kirsher 2057a6a5580cSJeff Kirsher /* Setup PCI resources 2058a6a5580cSJeff Kirsher */ 2059a6a5580cSJeff Kirsher 2060a6a5580cSJeff Kirsher err = pci_enable_device_mem(pdev); 2061a6a5580cSJeff Kirsher if (err) { 2062a6a5580cSJeff Kirsher dev_err(dev, "Cannot enable PCI device, aborting\n"); 2063a6a5580cSJeff Kirsher goto err_out_free_netdev; 2064a6a5580cSJeff Kirsher } 2065a6a5580cSJeff Kirsher 2066a6a5580cSJeff Kirsher err = pci_request_regions(pdev, DRV_NAME); 2067a6a5580cSJeff Kirsher if (err) { 2068a6a5580cSJeff Kirsher dev_err(dev, "Cannot request PCI regions, aborting\n"); 2069a6a5580cSJeff Kirsher goto err_out_disable_device; 2070a6a5580cSJeff Kirsher } 2071a6a5580cSJeff Kirsher 2072a6a5580cSJeff Kirsher pci_set_master(pdev); 2073a6a5580cSJeff Kirsher 2074a6a5580cSJeff Kirsher /* Query PCI controller on system for DMA addressing 2075a6a5580cSJeff Kirsher * limitation for the device. Try 40-bit first, and 2076a6a5580cSJeff Kirsher * fail to 32-bit. 2077a6a5580cSJeff Kirsher */ 2078a6a5580cSJeff Kirsher 2079a6a5580cSJeff Kirsher err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 2080a6a5580cSJeff Kirsher if (err) { 2081a6a5580cSJeff Kirsher err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 2082a6a5580cSJeff Kirsher if (err) { 2083a6a5580cSJeff Kirsher dev_err(dev, "No usable DMA configuration, aborting\n"); 2084a6a5580cSJeff Kirsher goto err_out_release_regions; 2085a6a5580cSJeff Kirsher } 2086a6a5580cSJeff Kirsher err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 2087a6a5580cSJeff Kirsher if (err) { 2088a6a5580cSJeff Kirsher dev_err(dev, "Unable to obtain %u-bit DMA " 2089a6a5580cSJeff Kirsher "for consistent allocations, aborting\n", 32); 2090a6a5580cSJeff Kirsher goto err_out_release_regions; 2091a6a5580cSJeff Kirsher } 2092a6a5580cSJeff Kirsher } else { 2093a6a5580cSJeff Kirsher err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); 2094a6a5580cSJeff Kirsher if (err) { 2095a6a5580cSJeff Kirsher dev_err(dev, "Unable to obtain %u-bit DMA " 2096a6a5580cSJeff Kirsher "for consistent allocations, aborting\n", 40); 2097a6a5580cSJeff Kirsher goto err_out_release_regions; 2098a6a5580cSJeff Kirsher } 2099a6a5580cSJeff Kirsher using_dac = 1; 2100a6a5580cSJeff Kirsher } 2101a6a5580cSJeff Kirsher 2102a6a5580cSJeff Kirsher /* Map vNIC resources from BAR0-5 2103a6a5580cSJeff Kirsher */ 2104a6a5580cSJeff Kirsher 2105a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { 2106a6a5580cSJeff Kirsher if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) 2107a6a5580cSJeff Kirsher continue; 2108a6a5580cSJeff Kirsher enic->bar[i].len = pci_resource_len(pdev, i); 2109a6a5580cSJeff Kirsher enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); 2110a6a5580cSJeff Kirsher if (!enic->bar[i].vaddr) { 2111a6a5580cSJeff Kirsher dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); 2112a6a5580cSJeff Kirsher err = -ENODEV; 2113a6a5580cSJeff Kirsher goto err_out_iounmap; 2114a6a5580cSJeff Kirsher } 2115a6a5580cSJeff Kirsher enic->bar[i].bus_addr = pci_resource_start(pdev, i); 2116a6a5580cSJeff Kirsher } 2117a6a5580cSJeff Kirsher 2118a6a5580cSJeff Kirsher /* Register vNIC device 2119a6a5580cSJeff Kirsher */ 2120a6a5580cSJeff Kirsher 2121a6a5580cSJeff Kirsher enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, 2122a6a5580cSJeff Kirsher ARRAY_SIZE(enic->bar)); 2123a6a5580cSJeff Kirsher if (!enic->vdev) { 2124a6a5580cSJeff Kirsher dev_err(dev, "vNIC registration failed, aborting\n"); 2125a6a5580cSJeff Kirsher err = -ENODEV; 2126a6a5580cSJeff Kirsher goto err_out_iounmap; 2127a6a5580cSJeff Kirsher } 2128a6a5580cSJeff Kirsher 21298749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 21308749b427SRoopa Prabhu /* Get number of subvnics */ 21318749b427SRoopa Prabhu pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 21328749b427SRoopa Prabhu if (pos) { 21338749b427SRoopa Prabhu pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, 2134413708bbSDan Carpenter &enic->num_vfs); 21358749b427SRoopa Prabhu if (enic->num_vfs) { 21368749b427SRoopa Prabhu err = pci_enable_sriov(pdev, enic->num_vfs); 21378749b427SRoopa Prabhu if (err) { 21388749b427SRoopa Prabhu dev_err(dev, "SRIOV enable failed, aborting." 21398749b427SRoopa Prabhu " pci_enable_sriov() returned %d\n", 21408749b427SRoopa Prabhu err); 21418749b427SRoopa Prabhu goto err_out_vnic_unregister; 21428749b427SRoopa Prabhu } 21438749b427SRoopa Prabhu enic->priv_flags |= ENIC_SRIOV_ENABLED; 2144b67f231dSRoopa Prabhu num_pps = enic->num_vfs; 21458749b427SRoopa Prabhu } 21468749b427SRoopa Prabhu } 21478749b427SRoopa Prabhu #endif 2148ca2b721dSRoopa Prabhu 21493f192795SRoopa Prabhu /* Allocate structure for port profiles */ 2150a1de2219SThomas Meyer enic->pp = kcalloc(num_pps, sizeof(*enic->pp), GFP_KERNEL); 21513f192795SRoopa Prabhu if (!enic->pp) { 21523f192795SRoopa Prabhu err = -ENOMEM; 2153ca2b721dSRoopa Prabhu goto err_out_disable_sriov_pp; 21543f192795SRoopa Prabhu } 21553f192795SRoopa Prabhu 2156a6a5580cSJeff Kirsher /* Issue device open to get device in known state 2157a6a5580cSJeff Kirsher */ 2158a6a5580cSJeff Kirsher 2159a6a5580cSJeff Kirsher err = enic_dev_open(enic); 2160a6a5580cSJeff Kirsher if (err) { 2161a6a5580cSJeff Kirsher dev_err(dev, "vNIC dev open failed, aborting\n"); 2162ca2b721dSRoopa Prabhu goto err_out_disable_sriov; 2163a6a5580cSJeff Kirsher } 2164a6a5580cSJeff Kirsher 2165a6a5580cSJeff Kirsher /* Setup devcmd lock 2166a6a5580cSJeff Kirsher */ 2167a6a5580cSJeff Kirsher 2168a6a5580cSJeff Kirsher spin_lock_init(&enic->devcmd_lock); 21690b038566SNeel Patel spin_lock_init(&enic->enic_api_lock); 2170a6a5580cSJeff Kirsher 2171a6a5580cSJeff Kirsher /* 2172a6a5580cSJeff Kirsher * Set ingress vlan rewrite mode before vnic initialization 2173a6a5580cSJeff Kirsher */ 2174a6a5580cSJeff Kirsher 2175a6a5580cSJeff Kirsher err = enic_dev_set_ig_vlan_rewrite_mode(enic); 2176a6a5580cSJeff Kirsher if (err) { 2177a6a5580cSJeff Kirsher dev_err(dev, 2178a6a5580cSJeff Kirsher "Failed to set ingress vlan rewrite mode, aborting.\n"); 2179a6a5580cSJeff Kirsher goto err_out_dev_close; 2180a6a5580cSJeff Kirsher } 2181a6a5580cSJeff Kirsher 2182a6a5580cSJeff Kirsher /* Issue device init to initialize the vnic-to-switch link. 2183a6a5580cSJeff Kirsher * We'll start with carrier off and wait for link UP 2184a6a5580cSJeff Kirsher * notification later to turn on carrier. We don't need 2185a6a5580cSJeff Kirsher * to wait here for the vnic-to-switch link initialization 2186a6a5580cSJeff Kirsher * to complete; link UP notification is the indication that 2187a6a5580cSJeff Kirsher * the process is complete. 2188a6a5580cSJeff Kirsher */ 2189a6a5580cSJeff Kirsher 2190a6a5580cSJeff Kirsher netif_carrier_off(netdev); 2191a6a5580cSJeff Kirsher 2192a6a5580cSJeff Kirsher /* Do not call dev_init for a dynamic vnic. 2193a6a5580cSJeff Kirsher * For a dynamic vnic, init_prov_info will be 2194a6a5580cSJeff Kirsher * called later by an upper layer. 2195a6a5580cSJeff Kirsher */ 2196a6a5580cSJeff Kirsher 21972b68c181SRoopa Prabhu if (!enic_is_dynamic(enic)) { 2198a6a5580cSJeff Kirsher err = vnic_dev_init(enic->vdev, 0); 2199a6a5580cSJeff Kirsher if (err) { 2200a6a5580cSJeff Kirsher dev_err(dev, "vNIC dev init failed, aborting\n"); 2201a6a5580cSJeff Kirsher goto err_out_dev_close; 2202a6a5580cSJeff Kirsher } 2203a6a5580cSJeff Kirsher } 2204a6a5580cSJeff Kirsher 2205a6a5580cSJeff Kirsher err = enic_dev_init(enic); 2206a6a5580cSJeff Kirsher if (err) { 2207a6a5580cSJeff Kirsher dev_err(dev, "Device initialization failed, aborting\n"); 2208a6a5580cSJeff Kirsher goto err_out_dev_close; 2209a6a5580cSJeff Kirsher } 2210a6a5580cSJeff Kirsher 2211822473b6Sgovindarajulu.v netif_set_real_num_tx_queues(netdev, enic->wq_count); 2212822473b6Sgovindarajulu.v 2213a6a5580cSJeff Kirsher /* Setup notification timer, HW reset task, and wq locks 2214a6a5580cSJeff Kirsher */ 2215a6a5580cSJeff Kirsher 2216a6a5580cSJeff Kirsher init_timer(&enic->notify_timer); 2217a6a5580cSJeff Kirsher enic->notify_timer.function = enic_notify_timer; 2218a6a5580cSJeff Kirsher enic->notify_timer.data = (unsigned long)enic; 2219a6a5580cSJeff Kirsher 2220a6a5580cSJeff Kirsher INIT_WORK(&enic->reset, enic_reset); 2221a6a5580cSJeff Kirsher INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); 2222a6a5580cSJeff Kirsher 2223a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 2224a6a5580cSJeff Kirsher spin_lock_init(&enic->wq_lock[i]); 2225a6a5580cSJeff Kirsher 2226a6a5580cSJeff Kirsher /* Register net device 2227a6a5580cSJeff Kirsher */ 2228a6a5580cSJeff Kirsher 2229a6a5580cSJeff Kirsher enic->port_mtu = enic->config.mtu; 2230a6a5580cSJeff Kirsher (void)enic_change_mtu(netdev, enic->port_mtu); 2231a6a5580cSJeff Kirsher 2232a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, enic->mac_addr); 2233a6a5580cSJeff Kirsher if (err) { 2234a6a5580cSJeff Kirsher dev_err(dev, "Invalid MAC address, aborting\n"); 2235a6a5580cSJeff Kirsher goto err_out_dev_deinit; 2236a6a5580cSJeff Kirsher } 2237a6a5580cSJeff Kirsher 2238a6a5580cSJeff Kirsher enic->tx_coalesce_usecs = enic->config.intr_timer_usec; 2239a6a5580cSJeff Kirsher enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; 2240a6a5580cSJeff Kirsher 22417335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) 2242a6a5580cSJeff Kirsher netdev->netdev_ops = &enic_netdev_dynamic_ops; 2243a6a5580cSJeff Kirsher else 2244a6a5580cSJeff Kirsher netdev->netdev_ops = &enic_netdev_ops; 2245a6a5580cSJeff Kirsher 2246a6a5580cSJeff Kirsher netdev->watchdog_timeo = 2 * HZ; 2247f13bbc2fSNeel Patel enic_set_ethtool_ops(netdev); 2248a6a5580cSJeff Kirsher 2249f646968fSPatrick McHardy netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2250a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, LOOP)) { 2251f646968fSPatrick McHardy netdev->features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2252a6a5580cSJeff Kirsher enic->loop_enable = 1; 2253a6a5580cSJeff Kirsher enic->loop_tag = enic->config.loop_tag; 2254a6a5580cSJeff Kirsher dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); 2255a6a5580cSJeff Kirsher } 2256a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, TXCSUM)) 2257a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; 2258a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, TSO)) 2259a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_TSO | 2260a6a5580cSJeff Kirsher NETIF_F_TSO6 | NETIF_F_TSO_ECN; 2261a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, RXCSUM)) 2262a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_RXCSUM; 2263a6a5580cSJeff Kirsher 2264a6a5580cSJeff Kirsher netdev->features |= netdev->hw_features; 2265a6a5580cSJeff Kirsher 2266a6a5580cSJeff Kirsher if (using_dac) 2267a6a5580cSJeff Kirsher netdev->features |= NETIF_F_HIGHDMA; 2268a6a5580cSJeff Kirsher 226901789349SJiri Pirko netdev->priv_flags |= IFF_UNICAST_FLT; 227001789349SJiri Pirko 2271a6a5580cSJeff Kirsher err = register_netdev(netdev); 2272a6a5580cSJeff Kirsher if (err) { 2273a6a5580cSJeff Kirsher dev_err(dev, "Cannot register net device, aborting\n"); 2274a6a5580cSJeff Kirsher goto err_out_dev_deinit; 2275a6a5580cSJeff Kirsher } 2276a6a5580cSJeff Kirsher 2277a6a5580cSJeff Kirsher return 0; 2278a6a5580cSJeff Kirsher 2279a6a5580cSJeff Kirsher err_out_dev_deinit: 2280a6a5580cSJeff Kirsher enic_dev_deinit(enic); 2281a6a5580cSJeff Kirsher err_out_dev_close: 2282a6a5580cSJeff Kirsher vnic_dev_close(enic->vdev); 22838749b427SRoopa Prabhu err_out_disable_sriov: 2284ca2b721dSRoopa Prabhu kfree(enic->pp); 2285ca2b721dSRoopa Prabhu err_out_disable_sriov_pp: 22868749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 22878749b427SRoopa Prabhu if (enic_sriov_enabled(enic)) { 22888749b427SRoopa Prabhu pci_disable_sriov(pdev); 22898749b427SRoopa Prabhu enic->priv_flags &= ~ENIC_SRIOV_ENABLED; 22908749b427SRoopa Prabhu } 2291a6a5580cSJeff Kirsher err_out_vnic_unregister: 22928749b427SRoopa Prabhu #endif 229335d87e33SRoopa Prabhu vnic_dev_unregister(enic->vdev); 2294a6a5580cSJeff Kirsher err_out_iounmap: 2295a6a5580cSJeff Kirsher enic_iounmap(enic); 2296a6a5580cSJeff Kirsher err_out_release_regions: 2297a6a5580cSJeff Kirsher pci_release_regions(pdev); 2298a6a5580cSJeff Kirsher err_out_disable_device: 2299a6a5580cSJeff Kirsher pci_disable_device(pdev); 2300a6a5580cSJeff Kirsher err_out_free_netdev: 2301a6a5580cSJeff Kirsher pci_set_drvdata(pdev, NULL); 2302a6a5580cSJeff Kirsher free_netdev(netdev); 2303a6a5580cSJeff Kirsher 2304a6a5580cSJeff Kirsher return err; 2305a6a5580cSJeff Kirsher } 2306a6a5580cSJeff Kirsher 2307854de92fSBill Pemberton static void enic_remove(struct pci_dev *pdev) 2308a6a5580cSJeff Kirsher { 2309a6a5580cSJeff Kirsher struct net_device *netdev = pci_get_drvdata(pdev); 2310a6a5580cSJeff Kirsher 2311a6a5580cSJeff Kirsher if (netdev) { 2312a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 2313a6a5580cSJeff Kirsher 2314a6a5580cSJeff Kirsher cancel_work_sync(&enic->reset); 2315a6a5580cSJeff Kirsher cancel_work_sync(&enic->change_mtu_work); 2316a6a5580cSJeff Kirsher unregister_netdev(netdev); 2317a6a5580cSJeff Kirsher enic_dev_deinit(enic); 2318a6a5580cSJeff Kirsher vnic_dev_close(enic->vdev); 23198749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 23208749b427SRoopa Prabhu if (enic_sriov_enabled(enic)) { 23218749b427SRoopa Prabhu pci_disable_sriov(pdev); 23228749b427SRoopa Prabhu enic->priv_flags &= ~ENIC_SRIOV_ENABLED; 23238749b427SRoopa Prabhu } 23248749b427SRoopa Prabhu #endif 23253f192795SRoopa Prabhu kfree(enic->pp); 2326a6a5580cSJeff Kirsher vnic_dev_unregister(enic->vdev); 2327a6a5580cSJeff Kirsher enic_iounmap(enic); 2328a6a5580cSJeff Kirsher pci_release_regions(pdev); 2329a6a5580cSJeff Kirsher pci_disable_device(pdev); 2330a6a5580cSJeff Kirsher pci_set_drvdata(pdev, NULL); 2331a6a5580cSJeff Kirsher free_netdev(netdev); 2332a6a5580cSJeff Kirsher } 2333a6a5580cSJeff Kirsher } 2334a6a5580cSJeff Kirsher 2335a6a5580cSJeff Kirsher static struct pci_driver enic_driver = { 2336a6a5580cSJeff Kirsher .name = DRV_NAME, 2337a6a5580cSJeff Kirsher .id_table = enic_id_table, 2338a6a5580cSJeff Kirsher .probe = enic_probe, 2339854de92fSBill Pemberton .remove = enic_remove, 2340a6a5580cSJeff Kirsher }; 2341a6a5580cSJeff Kirsher 2342a6a5580cSJeff Kirsher static int __init enic_init_module(void) 2343a6a5580cSJeff Kirsher { 2344a6a5580cSJeff Kirsher pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 2345a6a5580cSJeff Kirsher 2346a6a5580cSJeff Kirsher return pci_register_driver(&enic_driver); 2347a6a5580cSJeff Kirsher } 2348a6a5580cSJeff Kirsher 2349a6a5580cSJeff Kirsher static void __exit enic_cleanup_module(void) 2350a6a5580cSJeff Kirsher { 2351a6a5580cSJeff Kirsher pci_unregister_driver(&enic_driver); 2352a6a5580cSJeff Kirsher } 2353a6a5580cSJeff Kirsher 2354a6a5580cSJeff Kirsher module_init(enic_init_module); 2355a6a5580cSJeff Kirsher module_exit(enic_cleanup_module); 2356