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> 417c2ce6e6SSujith Sankar #include <linux/ktime.h> 42a6a5580cSJeff Kirsher 43a6a5580cSJeff Kirsher #include "cq_enet_desc.h" 44a6a5580cSJeff Kirsher #include "vnic_dev.h" 45a6a5580cSJeff Kirsher #include "vnic_intr.h" 46a6a5580cSJeff Kirsher #include "vnic_stats.h" 47a6a5580cSJeff Kirsher #include "vnic_vic.h" 48a6a5580cSJeff Kirsher #include "enic_res.h" 49a6a5580cSJeff Kirsher #include "enic.h" 50a6a5580cSJeff Kirsher #include "enic_dev.h" 51a6a5580cSJeff Kirsher #include "enic_pp.h" 52a6a5580cSJeff Kirsher 53a6a5580cSJeff Kirsher #define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) 54a6a5580cSJeff Kirsher #define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) 55a6a5580cSJeff Kirsher #define MAX_TSO (1 << 16) 56a6a5580cSJeff Kirsher #define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) 57a6a5580cSJeff Kirsher 58a6a5580cSJeff Kirsher #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ 59a6a5580cSJeff Kirsher #define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ 603a4adef5SRoopa Prabhu #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */ 61a6a5580cSJeff Kirsher 62a6a5580cSJeff Kirsher /* Supported devices */ 63a6a5580cSJeff Kirsher static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { 64a6a5580cSJeff Kirsher { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, 65a6a5580cSJeff Kirsher { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, 663a4adef5SRoopa Prabhu { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) }, 67a6a5580cSJeff Kirsher { 0, } /* end of table */ 68a6a5580cSJeff Kirsher }; 69a6a5580cSJeff Kirsher 70a6a5580cSJeff Kirsher MODULE_DESCRIPTION(DRV_DESCRIPTION); 71a6a5580cSJeff Kirsher MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>"); 72a6a5580cSJeff Kirsher MODULE_LICENSE("GPL"); 73a6a5580cSJeff Kirsher MODULE_VERSION(DRV_VERSION); 74a6a5580cSJeff Kirsher MODULE_DEVICE_TABLE(pci, enic_id_table); 75a6a5580cSJeff Kirsher 767c2ce6e6SSujith Sankar #define ENIC_LARGE_PKT_THRESHOLD 1000 777c2ce6e6SSujith Sankar #define ENIC_MAX_COALESCE_TIMERS 10 787c2ce6e6SSujith Sankar /* Interrupt moderation table, which will be used to decide the 797c2ce6e6SSujith Sankar * coalescing timer values 807c2ce6e6SSujith Sankar * {rx_rate in Mbps, mapping percentage of the range} 817c2ce6e6SSujith Sankar */ 827c2ce6e6SSujith Sankar struct enic_intr_mod_table mod_table[ENIC_MAX_COALESCE_TIMERS + 1] = { 837c2ce6e6SSujith Sankar {4000, 0}, 847c2ce6e6SSujith Sankar {4400, 10}, 857c2ce6e6SSujith Sankar {5060, 20}, 867c2ce6e6SSujith Sankar {5230, 30}, 877c2ce6e6SSujith Sankar {5540, 40}, 887c2ce6e6SSujith Sankar {5820, 50}, 897c2ce6e6SSujith Sankar {6120, 60}, 907c2ce6e6SSujith Sankar {6435, 70}, 917c2ce6e6SSujith Sankar {6745, 80}, 927c2ce6e6SSujith Sankar {7000, 90}, 937c2ce6e6SSujith Sankar {0xFFFFFFFF, 100} 947c2ce6e6SSujith Sankar }; 957c2ce6e6SSujith Sankar 967c2ce6e6SSujith Sankar /* This table helps the driver to pick different ranges for rx coalescing 977c2ce6e6SSujith Sankar * timer depending on the link speed. 987c2ce6e6SSujith Sankar */ 997c2ce6e6SSujith Sankar struct enic_intr_mod_range mod_range[ENIC_MAX_LINK_SPEEDS] = { 1007c2ce6e6SSujith Sankar {0, 0}, /* 0 - 4 Gbps */ 1017c2ce6e6SSujith Sankar {0, 3}, /* 4 - 10 Gbps */ 1027c2ce6e6SSujith Sankar {3, 6}, /* 10 - 40 Gbps */ 1037c2ce6e6SSujith Sankar }; 1047c2ce6e6SSujith Sankar 1053f192795SRoopa Prabhu int enic_is_dynamic(struct enic *enic) 106a6a5580cSJeff Kirsher { 107a6a5580cSJeff Kirsher return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; 108a6a5580cSJeff Kirsher } 109a6a5580cSJeff Kirsher 1108749b427SRoopa Prabhu int enic_sriov_enabled(struct enic *enic) 1118749b427SRoopa Prabhu { 1128749b427SRoopa Prabhu return (enic->priv_flags & ENIC_SRIOV_ENABLED) ? 1 : 0; 1138749b427SRoopa Prabhu } 1148749b427SRoopa Prabhu 1153a4adef5SRoopa Prabhu static int enic_is_sriov_vf(struct enic *enic) 1163a4adef5SRoopa Prabhu { 1173a4adef5SRoopa Prabhu return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_VF; 1183a4adef5SRoopa Prabhu } 1193a4adef5SRoopa Prabhu 120889d13f5SRoopa Prabhu int enic_is_valid_vf(struct enic *enic, int vf) 121889d13f5SRoopa Prabhu { 122889d13f5SRoopa Prabhu #ifdef CONFIG_PCI_IOV 123889d13f5SRoopa Prabhu return vf >= 0 && vf < enic->num_vfs; 124889d13f5SRoopa Prabhu #else 125889d13f5SRoopa Prabhu return 0; 126889d13f5SRoopa Prabhu #endif 127889d13f5SRoopa Prabhu } 128889d13f5SRoopa Prabhu 129a6a5580cSJeff Kirsher static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) 130a6a5580cSJeff Kirsher { 131a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(wq->vdev); 132a6a5580cSJeff Kirsher 133a6a5580cSJeff Kirsher if (buf->sop) 134a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 135a6a5580cSJeff Kirsher buf->len, PCI_DMA_TODEVICE); 136a6a5580cSJeff Kirsher else 137a6a5580cSJeff Kirsher pci_unmap_page(enic->pdev, buf->dma_addr, 138a6a5580cSJeff Kirsher buf->len, PCI_DMA_TODEVICE); 139a6a5580cSJeff Kirsher 140a6a5580cSJeff Kirsher if (buf->os_buf) 141a6a5580cSJeff Kirsher dev_kfree_skb_any(buf->os_buf); 142a6a5580cSJeff Kirsher } 143a6a5580cSJeff Kirsher 144a6a5580cSJeff Kirsher static void enic_wq_free_buf(struct vnic_wq *wq, 145a6a5580cSJeff Kirsher struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) 146a6a5580cSJeff Kirsher { 147a6a5580cSJeff Kirsher enic_free_wq_buf(wq, buf); 148a6a5580cSJeff Kirsher } 149a6a5580cSJeff Kirsher 150a6a5580cSJeff Kirsher static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 151a6a5580cSJeff Kirsher u8 type, u16 q_number, u16 completed_index, void *opaque) 152a6a5580cSJeff Kirsher { 153a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(vdev); 154a6a5580cSJeff Kirsher 155a6a5580cSJeff Kirsher spin_lock(&enic->wq_lock[q_number]); 156a6a5580cSJeff Kirsher 157a6a5580cSJeff Kirsher vnic_wq_service(&enic->wq[q_number], cq_desc, 158a6a5580cSJeff Kirsher completed_index, enic_wq_free_buf, 159a6a5580cSJeff Kirsher opaque); 160a6a5580cSJeff Kirsher 161822473b6Sgovindarajulu.v if (netif_tx_queue_stopped(netdev_get_tx_queue(enic->netdev, q_number)) && 162a6a5580cSJeff Kirsher vnic_wq_desc_avail(&enic->wq[q_number]) >= 163a6a5580cSJeff Kirsher (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) 164822473b6Sgovindarajulu.v netif_wake_subqueue(enic->netdev, q_number); 165a6a5580cSJeff Kirsher 166a6a5580cSJeff Kirsher spin_unlock(&enic->wq_lock[q_number]); 167a6a5580cSJeff Kirsher 168a6a5580cSJeff Kirsher return 0; 169a6a5580cSJeff Kirsher } 170a6a5580cSJeff Kirsher 171a6a5580cSJeff Kirsher static void enic_log_q_error(struct enic *enic) 172a6a5580cSJeff Kirsher { 173a6a5580cSJeff Kirsher unsigned int i; 174a6a5580cSJeff Kirsher u32 error_status; 175a6a5580cSJeff Kirsher 176a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 177a6a5580cSJeff Kirsher error_status = vnic_wq_error_status(&enic->wq[i]); 178a6a5580cSJeff Kirsher if (error_status) 179a6a5580cSJeff Kirsher netdev_err(enic->netdev, "WQ[%d] error_status %d\n", 180a6a5580cSJeff Kirsher i, error_status); 181a6a5580cSJeff Kirsher } 182a6a5580cSJeff Kirsher 183a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 184a6a5580cSJeff Kirsher error_status = vnic_rq_error_status(&enic->rq[i]); 185a6a5580cSJeff Kirsher if (error_status) 186a6a5580cSJeff Kirsher netdev_err(enic->netdev, "RQ[%d] error_status %d\n", 187a6a5580cSJeff Kirsher i, error_status); 188a6a5580cSJeff Kirsher } 189a6a5580cSJeff Kirsher } 190a6a5580cSJeff Kirsher 191a6a5580cSJeff Kirsher static void enic_msglvl_check(struct enic *enic) 192a6a5580cSJeff Kirsher { 193a6a5580cSJeff Kirsher u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); 194a6a5580cSJeff Kirsher 195a6a5580cSJeff Kirsher if (msg_enable != enic->msg_enable) { 196a6a5580cSJeff Kirsher netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", 197a6a5580cSJeff Kirsher enic->msg_enable, msg_enable); 198a6a5580cSJeff Kirsher enic->msg_enable = msg_enable; 199a6a5580cSJeff Kirsher } 200a6a5580cSJeff Kirsher } 201a6a5580cSJeff Kirsher 202a6a5580cSJeff Kirsher static void enic_mtu_check(struct enic *enic) 203a6a5580cSJeff Kirsher { 204a6a5580cSJeff Kirsher u32 mtu = vnic_dev_mtu(enic->vdev); 205a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 206a6a5580cSJeff Kirsher 207a6a5580cSJeff Kirsher if (mtu && mtu != enic->port_mtu) { 208a6a5580cSJeff Kirsher enic->port_mtu = mtu; 2097335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) { 210a6a5580cSJeff Kirsher mtu = max_t(int, ENIC_MIN_MTU, 211a6a5580cSJeff Kirsher min_t(int, ENIC_MAX_MTU, mtu)); 212a6a5580cSJeff Kirsher if (mtu != netdev->mtu) 213a6a5580cSJeff Kirsher schedule_work(&enic->change_mtu_work); 214a6a5580cSJeff Kirsher } else { 215a6a5580cSJeff Kirsher if (mtu < netdev->mtu) 216a6a5580cSJeff Kirsher netdev_warn(netdev, 217a6a5580cSJeff Kirsher "interface MTU (%d) set higher " 218a6a5580cSJeff Kirsher "than switch port MTU (%d)\n", 219a6a5580cSJeff Kirsher netdev->mtu, mtu); 220a6a5580cSJeff Kirsher } 221a6a5580cSJeff Kirsher } 222a6a5580cSJeff Kirsher } 223a6a5580cSJeff Kirsher 224a6a5580cSJeff Kirsher static void enic_link_check(struct enic *enic) 225a6a5580cSJeff Kirsher { 226a6a5580cSJeff Kirsher int link_status = vnic_dev_link_status(enic->vdev); 227a6a5580cSJeff Kirsher int carrier_ok = netif_carrier_ok(enic->netdev); 228a6a5580cSJeff Kirsher 229a6a5580cSJeff Kirsher if (link_status && !carrier_ok) { 230a6a5580cSJeff Kirsher netdev_info(enic->netdev, "Link UP\n"); 231a6a5580cSJeff Kirsher netif_carrier_on(enic->netdev); 232a6a5580cSJeff Kirsher } else if (!link_status && carrier_ok) { 233a6a5580cSJeff Kirsher netdev_info(enic->netdev, "Link DOWN\n"); 234a6a5580cSJeff Kirsher netif_carrier_off(enic->netdev); 235a6a5580cSJeff Kirsher } 236a6a5580cSJeff Kirsher } 237a6a5580cSJeff Kirsher 238a6a5580cSJeff Kirsher static void enic_notify_check(struct enic *enic) 239a6a5580cSJeff Kirsher { 240a6a5580cSJeff Kirsher enic_msglvl_check(enic); 241a6a5580cSJeff Kirsher enic_mtu_check(enic); 242a6a5580cSJeff Kirsher enic_link_check(enic); 243a6a5580cSJeff Kirsher } 244a6a5580cSJeff Kirsher 245a6a5580cSJeff Kirsher #define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) 246a6a5580cSJeff Kirsher 247a6a5580cSJeff Kirsher static irqreturn_t enic_isr_legacy(int irq, void *data) 248a6a5580cSJeff Kirsher { 249a6a5580cSJeff Kirsher struct net_device *netdev = data; 250a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 251a6a5580cSJeff Kirsher unsigned int io_intr = enic_legacy_io_intr(); 252a6a5580cSJeff Kirsher unsigned int err_intr = enic_legacy_err_intr(); 253a6a5580cSJeff Kirsher unsigned int notify_intr = enic_legacy_notify_intr(); 254a6a5580cSJeff Kirsher u32 pba; 255a6a5580cSJeff Kirsher 256a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[io_intr]); 257a6a5580cSJeff Kirsher 258a6a5580cSJeff Kirsher pba = vnic_intr_legacy_pba(enic->legacy_pba); 259a6a5580cSJeff Kirsher if (!pba) { 260a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[io_intr]); 261a6a5580cSJeff Kirsher return IRQ_NONE; /* not our interrupt */ 262a6a5580cSJeff Kirsher } 263a6a5580cSJeff Kirsher 264a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, notify_intr)) { 265a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[notify_intr]); 266a6a5580cSJeff Kirsher enic_notify_check(enic); 267a6a5580cSJeff Kirsher } 268a6a5580cSJeff Kirsher 269a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, err_intr)) { 270a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[err_intr]); 271a6a5580cSJeff Kirsher enic_log_q_error(enic); 272a6a5580cSJeff Kirsher /* schedule recovery from WQ/RQ error */ 273a6a5580cSJeff Kirsher schedule_work(&enic->reset); 274a6a5580cSJeff Kirsher return IRQ_HANDLED; 275a6a5580cSJeff Kirsher } 276a6a5580cSJeff Kirsher 277a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, io_intr)) { 278a6a5580cSJeff Kirsher if (napi_schedule_prep(&enic->napi[0])) 279a6a5580cSJeff Kirsher __napi_schedule(&enic->napi[0]); 280a6a5580cSJeff Kirsher } else { 281a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[io_intr]); 282a6a5580cSJeff Kirsher } 283a6a5580cSJeff Kirsher 284a6a5580cSJeff Kirsher return IRQ_HANDLED; 285a6a5580cSJeff Kirsher } 286a6a5580cSJeff Kirsher 287a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msi(int irq, void *data) 288a6a5580cSJeff Kirsher { 289a6a5580cSJeff Kirsher struct enic *enic = data; 290a6a5580cSJeff Kirsher 291a6a5580cSJeff Kirsher /* With MSI, there is no sharing of interrupts, so this is 292a6a5580cSJeff Kirsher * our interrupt and there is no need to ack it. The device 293a6a5580cSJeff Kirsher * is not providing per-vector masking, so the OS will not 294a6a5580cSJeff Kirsher * write to PCI config space to mask/unmask the interrupt. 295a6a5580cSJeff Kirsher * We're using mask_on_assertion for MSI, so the device 296a6a5580cSJeff Kirsher * automatically masks the interrupt when the interrupt is 297a6a5580cSJeff Kirsher * generated. Later, when exiting polling, the interrupt 298a6a5580cSJeff Kirsher * will be unmasked (see enic_poll). 299a6a5580cSJeff Kirsher * 300a6a5580cSJeff Kirsher * Also, the device uses the same PCIe Traffic Class (TC) 301a6a5580cSJeff Kirsher * for Memory Write data and MSI, so there are no ordering 302a6a5580cSJeff Kirsher * issues; the MSI will always arrive at the Root Complex 303a6a5580cSJeff Kirsher * _after_ corresponding Memory Writes (i.e. descriptor 304a6a5580cSJeff Kirsher * writes). 305a6a5580cSJeff Kirsher */ 306a6a5580cSJeff Kirsher 307a6a5580cSJeff Kirsher napi_schedule(&enic->napi[0]); 308a6a5580cSJeff Kirsher 309a6a5580cSJeff Kirsher return IRQ_HANDLED; 310a6a5580cSJeff Kirsher } 311a6a5580cSJeff Kirsher 312a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_rq(int irq, void *data) 313a6a5580cSJeff Kirsher { 314a6a5580cSJeff Kirsher struct napi_struct *napi = data; 315a6a5580cSJeff Kirsher 316a6a5580cSJeff Kirsher /* schedule NAPI polling for RQ cleanup */ 317a6a5580cSJeff Kirsher napi_schedule(napi); 318a6a5580cSJeff Kirsher 319a6a5580cSJeff Kirsher return IRQ_HANDLED; 320a6a5580cSJeff Kirsher } 321a6a5580cSJeff Kirsher 322a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_wq(int irq, void *data) 323a6a5580cSJeff Kirsher { 324a6a5580cSJeff Kirsher struct enic *enic = data; 325822473b6Sgovindarajulu.v unsigned int cq; 326822473b6Sgovindarajulu.v unsigned int intr; 327a6a5580cSJeff Kirsher unsigned int wq_work_to_do = -1; /* no limit */ 328a6a5580cSJeff Kirsher unsigned int wq_work_done; 329822473b6Sgovindarajulu.v unsigned int wq_irq; 330822473b6Sgovindarajulu.v 331822473b6Sgovindarajulu.v wq_irq = (u32)irq - enic->msix_entry[enic_msix_wq_intr(enic, 0)].vector; 332822473b6Sgovindarajulu.v cq = enic_cq_wq(enic, wq_irq); 333822473b6Sgovindarajulu.v intr = enic_msix_wq_intr(enic, wq_irq); 334a6a5580cSJeff Kirsher 335a6a5580cSJeff Kirsher wq_work_done = vnic_cq_service(&enic->cq[cq], 336a6a5580cSJeff Kirsher wq_work_to_do, enic_wq_service, NULL); 337a6a5580cSJeff Kirsher 338a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 339a6a5580cSJeff Kirsher wq_work_done, 340a6a5580cSJeff Kirsher 1 /* unmask intr */, 341a6a5580cSJeff Kirsher 1 /* reset intr timer */); 342a6a5580cSJeff Kirsher 343a6a5580cSJeff Kirsher return IRQ_HANDLED; 344a6a5580cSJeff Kirsher } 345a6a5580cSJeff Kirsher 346a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_err(int irq, void *data) 347a6a5580cSJeff Kirsher { 348a6a5580cSJeff Kirsher struct enic *enic = data; 349a6a5580cSJeff Kirsher unsigned int intr = enic_msix_err_intr(enic); 350a6a5580cSJeff Kirsher 351a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[intr]); 352a6a5580cSJeff Kirsher 353a6a5580cSJeff Kirsher enic_log_q_error(enic); 354a6a5580cSJeff Kirsher 355a6a5580cSJeff Kirsher /* schedule recovery from WQ/RQ error */ 356a6a5580cSJeff Kirsher schedule_work(&enic->reset); 357a6a5580cSJeff Kirsher 358a6a5580cSJeff Kirsher return IRQ_HANDLED; 359a6a5580cSJeff Kirsher } 360a6a5580cSJeff Kirsher 361a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_notify(int irq, void *data) 362a6a5580cSJeff Kirsher { 363a6a5580cSJeff Kirsher struct enic *enic = data; 364a6a5580cSJeff Kirsher unsigned int intr = enic_msix_notify_intr(enic); 365a6a5580cSJeff Kirsher 366a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[intr]); 367a6a5580cSJeff Kirsher enic_notify_check(enic); 368a6a5580cSJeff Kirsher 369a6a5580cSJeff Kirsher return IRQ_HANDLED; 370a6a5580cSJeff Kirsher } 371a6a5580cSJeff Kirsher 372a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_cont(struct enic *enic, 373a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 374a6a5580cSJeff Kirsher unsigned int len_left, int loopback) 375a6a5580cSJeff Kirsher { 3769e903e08SEric Dumazet const skb_frag_t *frag; 377a6a5580cSJeff Kirsher 378a6a5580cSJeff Kirsher /* Queue additional data fragments */ 379a6a5580cSJeff Kirsher for (frag = skb_shinfo(skb)->frags; len_left; frag++) { 3809e903e08SEric Dumazet len_left -= skb_frag_size(frag); 381a6a5580cSJeff Kirsher enic_queue_wq_desc_cont(wq, skb, 3824bf5adbfSIan Campbell skb_frag_dma_map(&enic->pdev->dev, 3839e903e08SEric Dumazet frag, 0, skb_frag_size(frag), 3845d6bcdfeSIan Campbell DMA_TO_DEVICE), 3859e903e08SEric Dumazet skb_frag_size(frag), 386a6a5580cSJeff Kirsher (len_left == 0), /* EOP? */ 387a6a5580cSJeff Kirsher loopback); 388a6a5580cSJeff Kirsher } 389a6a5580cSJeff Kirsher } 390a6a5580cSJeff Kirsher 391a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_vlan(struct enic *enic, 392a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 393a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 394a6a5580cSJeff Kirsher { 395a6a5580cSJeff Kirsher unsigned int head_len = skb_headlen(skb); 396a6a5580cSJeff Kirsher unsigned int len_left = skb->len - head_len; 397a6a5580cSJeff Kirsher int eop = (len_left == 0); 398a6a5580cSJeff Kirsher 399a6a5580cSJeff Kirsher /* Queue the main skb fragment. The fragments are no larger 400a6a5580cSJeff Kirsher * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less 401a6a5580cSJeff Kirsher * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor 402a6a5580cSJeff Kirsher * per fragment is queued. 403a6a5580cSJeff Kirsher */ 404a6a5580cSJeff Kirsher enic_queue_wq_desc(wq, skb, 405a6a5580cSJeff Kirsher pci_map_single(enic->pdev, skb->data, 406a6a5580cSJeff Kirsher head_len, PCI_DMA_TODEVICE), 407a6a5580cSJeff Kirsher head_len, 408a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 409a6a5580cSJeff Kirsher eop, loopback); 410a6a5580cSJeff Kirsher 411a6a5580cSJeff Kirsher if (!eop) 412a6a5580cSJeff Kirsher enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); 413a6a5580cSJeff Kirsher } 414a6a5580cSJeff Kirsher 415a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, 416a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 417a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 418a6a5580cSJeff Kirsher { 419a6a5580cSJeff Kirsher unsigned int head_len = skb_headlen(skb); 420a6a5580cSJeff Kirsher unsigned int len_left = skb->len - head_len; 421a6a5580cSJeff Kirsher unsigned int hdr_len = skb_checksum_start_offset(skb); 422a6a5580cSJeff Kirsher unsigned int csum_offset = hdr_len + skb->csum_offset; 423a6a5580cSJeff Kirsher int eop = (len_left == 0); 424a6a5580cSJeff Kirsher 425a6a5580cSJeff Kirsher /* Queue the main skb fragment. The fragments are no larger 426a6a5580cSJeff Kirsher * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less 427a6a5580cSJeff Kirsher * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor 428a6a5580cSJeff Kirsher * per fragment is queued. 429a6a5580cSJeff Kirsher */ 430a6a5580cSJeff Kirsher enic_queue_wq_desc_csum_l4(wq, skb, 431a6a5580cSJeff Kirsher pci_map_single(enic->pdev, skb->data, 432a6a5580cSJeff Kirsher head_len, PCI_DMA_TODEVICE), 433a6a5580cSJeff Kirsher head_len, 434a6a5580cSJeff Kirsher csum_offset, 435a6a5580cSJeff Kirsher hdr_len, 436a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 437a6a5580cSJeff Kirsher eop, loopback); 438a6a5580cSJeff Kirsher 439a6a5580cSJeff Kirsher if (!eop) 440a6a5580cSJeff Kirsher enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); 441a6a5580cSJeff Kirsher } 442a6a5580cSJeff Kirsher 443a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_tso(struct enic *enic, 444a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, 445a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 446a6a5580cSJeff Kirsher { 447a6a5580cSJeff Kirsher unsigned int frag_len_left = skb_headlen(skb); 448a6a5580cSJeff Kirsher unsigned int len_left = skb->len - frag_len_left; 449a6a5580cSJeff Kirsher unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 450a6a5580cSJeff Kirsher int eop = (len_left == 0); 451a6a5580cSJeff Kirsher unsigned int len; 452a6a5580cSJeff Kirsher dma_addr_t dma_addr; 453a6a5580cSJeff Kirsher unsigned int offset = 0; 454a6a5580cSJeff Kirsher skb_frag_t *frag; 455a6a5580cSJeff Kirsher 456a6a5580cSJeff Kirsher /* Preload TCP csum field with IP pseudo hdr calculated 457a6a5580cSJeff Kirsher * with IP length set to zero. HW will later add in length 458a6a5580cSJeff Kirsher * to each TCP segment resulting from the TSO. 459a6a5580cSJeff Kirsher */ 460a6a5580cSJeff Kirsher 461a6a5580cSJeff Kirsher if (skb->protocol == cpu_to_be16(ETH_P_IP)) { 462a6a5580cSJeff Kirsher ip_hdr(skb)->check = 0; 463a6a5580cSJeff Kirsher tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, 464a6a5580cSJeff Kirsher ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); 465a6a5580cSJeff Kirsher } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { 466a6a5580cSJeff Kirsher tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 467a6a5580cSJeff Kirsher &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); 468a6a5580cSJeff Kirsher } 469a6a5580cSJeff Kirsher 470a6a5580cSJeff Kirsher /* Queue WQ_ENET_MAX_DESC_LEN length descriptors 471a6a5580cSJeff Kirsher * for the main skb fragment 472a6a5580cSJeff Kirsher */ 473a6a5580cSJeff Kirsher while (frag_len_left) { 474a6a5580cSJeff Kirsher len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); 475a6a5580cSJeff Kirsher dma_addr = pci_map_single(enic->pdev, skb->data + offset, 476a6a5580cSJeff Kirsher len, PCI_DMA_TODEVICE); 477a6a5580cSJeff Kirsher enic_queue_wq_desc_tso(wq, skb, 478a6a5580cSJeff Kirsher dma_addr, 479a6a5580cSJeff Kirsher len, 480a6a5580cSJeff Kirsher mss, hdr_len, 481a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 482a6a5580cSJeff Kirsher eop && (len == frag_len_left), loopback); 483a6a5580cSJeff Kirsher frag_len_left -= len; 484a6a5580cSJeff Kirsher offset += len; 485a6a5580cSJeff Kirsher } 486a6a5580cSJeff Kirsher 487a6a5580cSJeff Kirsher if (eop) 488a6a5580cSJeff Kirsher return; 489a6a5580cSJeff Kirsher 490a6a5580cSJeff Kirsher /* Queue WQ_ENET_MAX_DESC_LEN length descriptors 491a6a5580cSJeff Kirsher * for additional data fragments 492a6a5580cSJeff Kirsher */ 493a6a5580cSJeff Kirsher for (frag = skb_shinfo(skb)->frags; len_left; frag++) { 4949e903e08SEric Dumazet len_left -= skb_frag_size(frag); 4959e903e08SEric Dumazet frag_len_left = skb_frag_size(frag); 4964bf5adbfSIan Campbell offset = 0; 497a6a5580cSJeff Kirsher 498a6a5580cSJeff Kirsher while (frag_len_left) { 499a6a5580cSJeff Kirsher len = min(frag_len_left, 500a6a5580cSJeff Kirsher (unsigned int)WQ_ENET_MAX_DESC_LEN); 5014bf5adbfSIan Campbell dma_addr = skb_frag_dma_map(&enic->pdev->dev, frag, 502a6a5580cSJeff Kirsher offset, len, 5035d6bcdfeSIan Campbell DMA_TO_DEVICE); 504a6a5580cSJeff Kirsher enic_queue_wq_desc_cont(wq, skb, 505a6a5580cSJeff Kirsher dma_addr, 506a6a5580cSJeff Kirsher len, 507a6a5580cSJeff Kirsher (len_left == 0) && 508a6a5580cSJeff Kirsher (len == frag_len_left), /* EOP? */ 509a6a5580cSJeff Kirsher loopback); 510a6a5580cSJeff Kirsher frag_len_left -= len; 511a6a5580cSJeff Kirsher offset += len; 512a6a5580cSJeff Kirsher } 513a6a5580cSJeff Kirsher } 514a6a5580cSJeff Kirsher } 515a6a5580cSJeff Kirsher 516a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb(struct enic *enic, 517a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb) 518a6a5580cSJeff Kirsher { 519a6a5580cSJeff Kirsher unsigned int mss = skb_shinfo(skb)->gso_size; 520a6a5580cSJeff Kirsher unsigned int vlan_tag = 0; 521a6a5580cSJeff Kirsher int vlan_tag_insert = 0; 522a6a5580cSJeff Kirsher int loopback = 0; 523a6a5580cSJeff Kirsher 524a6a5580cSJeff Kirsher if (vlan_tx_tag_present(skb)) { 525a6a5580cSJeff Kirsher /* VLAN tag from trunking driver */ 526a6a5580cSJeff Kirsher vlan_tag_insert = 1; 527a6a5580cSJeff Kirsher vlan_tag = vlan_tx_tag_get(skb); 528a6a5580cSJeff Kirsher } else if (enic->loop_enable) { 529a6a5580cSJeff Kirsher vlan_tag = enic->loop_tag; 530a6a5580cSJeff Kirsher loopback = 1; 531a6a5580cSJeff Kirsher } 532a6a5580cSJeff Kirsher 533a6a5580cSJeff Kirsher if (mss) 534a6a5580cSJeff Kirsher enic_queue_wq_skb_tso(enic, wq, skb, mss, 535a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 536a6a5580cSJeff Kirsher else if (skb->ip_summed == CHECKSUM_PARTIAL) 537a6a5580cSJeff Kirsher enic_queue_wq_skb_csum_l4(enic, wq, skb, 538a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 539a6a5580cSJeff Kirsher else 540a6a5580cSJeff Kirsher enic_queue_wq_skb_vlan(enic, wq, skb, 541a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 542a6a5580cSJeff Kirsher } 543a6a5580cSJeff Kirsher 544a6a5580cSJeff Kirsher /* netif_tx_lock held, process context with BHs disabled, or BH */ 545a6a5580cSJeff Kirsher static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, 546a6a5580cSJeff Kirsher struct net_device *netdev) 547a6a5580cSJeff Kirsher { 548a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 549822473b6Sgovindarajulu.v struct vnic_wq *wq; 550a6a5580cSJeff Kirsher unsigned long flags; 551822473b6Sgovindarajulu.v unsigned int txq_map; 552a6a5580cSJeff Kirsher 553a6a5580cSJeff Kirsher if (skb->len <= 0) { 55498d8a65dSEric W. Biederman dev_kfree_skb_any(skb); 555a6a5580cSJeff Kirsher return NETDEV_TX_OK; 556a6a5580cSJeff Kirsher } 557a6a5580cSJeff Kirsher 558822473b6Sgovindarajulu.v txq_map = skb_get_queue_mapping(skb) % enic->wq_count; 559822473b6Sgovindarajulu.v wq = &enic->wq[txq_map]; 560822473b6Sgovindarajulu.v 561a6a5580cSJeff Kirsher /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, 562a6a5580cSJeff Kirsher * which is very likely. In the off chance it's going to take 563a6a5580cSJeff Kirsher * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. 564a6a5580cSJeff Kirsher */ 565a6a5580cSJeff Kirsher 566a6a5580cSJeff Kirsher if (skb_shinfo(skb)->gso_size == 0 && 567a6a5580cSJeff Kirsher skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && 568a6a5580cSJeff Kirsher skb_linearize(skb)) { 56998d8a65dSEric W. Biederman dev_kfree_skb_any(skb); 570a6a5580cSJeff Kirsher return NETDEV_TX_OK; 571a6a5580cSJeff Kirsher } 572a6a5580cSJeff Kirsher 573822473b6Sgovindarajulu.v spin_lock_irqsave(&enic->wq_lock[txq_map], flags); 574a6a5580cSJeff Kirsher 575a6a5580cSJeff Kirsher if (vnic_wq_desc_avail(wq) < 576a6a5580cSJeff Kirsher skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { 577822473b6Sgovindarajulu.v netif_tx_stop_queue(netdev_get_tx_queue(netdev, txq_map)); 578a6a5580cSJeff Kirsher /* This is a hard error, log it */ 579a6a5580cSJeff Kirsher netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); 580822473b6Sgovindarajulu.v spin_unlock_irqrestore(&enic->wq_lock[txq_map], flags); 581a6a5580cSJeff Kirsher return NETDEV_TX_BUSY; 582a6a5580cSJeff Kirsher } 583a6a5580cSJeff Kirsher 584a6a5580cSJeff Kirsher enic_queue_wq_skb(enic, wq, skb); 585a6a5580cSJeff Kirsher 586a6a5580cSJeff Kirsher if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) 587822473b6Sgovindarajulu.v netif_tx_stop_queue(netdev_get_tx_queue(netdev, txq_map)); 588a6a5580cSJeff Kirsher 589822473b6Sgovindarajulu.v spin_unlock_irqrestore(&enic->wq_lock[txq_map], flags); 590a6a5580cSJeff Kirsher 591a6a5580cSJeff Kirsher return NETDEV_TX_OK; 592a6a5580cSJeff Kirsher } 593a6a5580cSJeff Kirsher 594a6a5580cSJeff Kirsher /* dev_base_lock rwlock held, nominally process context */ 595a6a5580cSJeff Kirsher static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, 596a6a5580cSJeff Kirsher struct rtnl_link_stats64 *net_stats) 597a6a5580cSJeff Kirsher { 598a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 599a6a5580cSJeff Kirsher struct vnic_stats *stats; 600a6a5580cSJeff Kirsher 601a6a5580cSJeff Kirsher enic_dev_stats_dump(enic, &stats); 602a6a5580cSJeff Kirsher 603a6a5580cSJeff Kirsher net_stats->tx_packets = stats->tx.tx_frames_ok; 604a6a5580cSJeff Kirsher net_stats->tx_bytes = stats->tx.tx_bytes_ok; 605a6a5580cSJeff Kirsher net_stats->tx_errors = stats->tx.tx_errors; 606a6a5580cSJeff Kirsher net_stats->tx_dropped = stats->tx.tx_drops; 607a6a5580cSJeff Kirsher 608a6a5580cSJeff Kirsher net_stats->rx_packets = stats->rx.rx_frames_ok; 609a6a5580cSJeff Kirsher net_stats->rx_bytes = stats->rx.rx_bytes_ok; 610a6a5580cSJeff Kirsher net_stats->rx_errors = stats->rx.rx_errors; 611a6a5580cSJeff Kirsher net_stats->multicast = stats->rx.rx_multicast_frames_ok; 612a6a5580cSJeff Kirsher net_stats->rx_over_errors = enic->rq_truncated_pkts; 613a6a5580cSJeff Kirsher net_stats->rx_crc_errors = enic->rq_bad_fcs; 614a6a5580cSJeff Kirsher net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; 615a6a5580cSJeff Kirsher 616a6a5580cSJeff Kirsher return net_stats; 617a6a5580cSJeff Kirsher } 618a6a5580cSJeff Kirsher 619f009618aSAlexander Duyck static int enic_mc_sync(struct net_device *netdev, const u8 *mc_addr) 620f009618aSAlexander Duyck { 621f009618aSAlexander Duyck struct enic *enic = netdev_priv(netdev); 622f009618aSAlexander Duyck 623f009618aSAlexander Duyck if (enic->mc_count == ENIC_MULTICAST_PERFECT_FILTERS) { 624f009618aSAlexander Duyck unsigned int mc_count = netdev_mc_count(netdev); 625f009618aSAlexander Duyck 626f009618aSAlexander Duyck netdev_warn(netdev, "Registering only %d out of %d multicast addresses\n", 627f009618aSAlexander Duyck ENIC_MULTICAST_PERFECT_FILTERS, mc_count); 628f009618aSAlexander Duyck 629f009618aSAlexander Duyck return -ENOSPC; 630f009618aSAlexander Duyck } 631f009618aSAlexander Duyck 632f009618aSAlexander Duyck enic_dev_add_addr(enic, mc_addr); 633f009618aSAlexander Duyck enic->mc_count++; 634f009618aSAlexander Duyck 635f009618aSAlexander Duyck return 0; 636f009618aSAlexander Duyck } 637f009618aSAlexander Duyck 638f009618aSAlexander Duyck static int enic_mc_unsync(struct net_device *netdev, const u8 *mc_addr) 639f009618aSAlexander Duyck { 640f009618aSAlexander Duyck struct enic *enic = netdev_priv(netdev); 641f009618aSAlexander Duyck 642f009618aSAlexander Duyck enic_dev_del_addr(enic, mc_addr); 643f009618aSAlexander Duyck enic->mc_count--; 644f009618aSAlexander Duyck 645f009618aSAlexander Duyck return 0; 646f009618aSAlexander Duyck } 647f009618aSAlexander Duyck 648f009618aSAlexander Duyck static int enic_uc_sync(struct net_device *netdev, const u8 *uc_addr) 649f009618aSAlexander Duyck { 650f009618aSAlexander Duyck struct enic *enic = netdev_priv(netdev); 651f009618aSAlexander Duyck 652f009618aSAlexander Duyck if (enic->uc_count == ENIC_UNICAST_PERFECT_FILTERS) { 653f009618aSAlexander Duyck unsigned int uc_count = netdev_uc_count(netdev); 654f009618aSAlexander Duyck 655f009618aSAlexander Duyck netdev_warn(netdev, "Registering only %d out of %d unicast addresses\n", 656f009618aSAlexander Duyck ENIC_UNICAST_PERFECT_FILTERS, uc_count); 657f009618aSAlexander Duyck 658f009618aSAlexander Duyck return -ENOSPC; 659f009618aSAlexander Duyck } 660f009618aSAlexander Duyck 661f009618aSAlexander Duyck enic_dev_add_addr(enic, uc_addr); 662f009618aSAlexander Duyck enic->uc_count++; 663f009618aSAlexander Duyck 664f009618aSAlexander Duyck return 0; 665f009618aSAlexander Duyck } 666f009618aSAlexander Duyck 667f009618aSAlexander Duyck static int enic_uc_unsync(struct net_device *netdev, const u8 *uc_addr) 668f009618aSAlexander Duyck { 669f009618aSAlexander Duyck struct enic *enic = netdev_priv(netdev); 670f009618aSAlexander Duyck 671f009618aSAlexander Duyck enic_dev_del_addr(enic, uc_addr); 672f009618aSAlexander Duyck enic->uc_count--; 673f009618aSAlexander Duyck 674f009618aSAlexander Duyck return 0; 675f009618aSAlexander Duyck } 676f009618aSAlexander Duyck 677a6a5580cSJeff Kirsher void enic_reset_addr_lists(struct enic *enic) 678a6a5580cSJeff Kirsher { 679f009618aSAlexander Duyck struct net_device *netdev = enic->netdev; 680f009618aSAlexander Duyck 681f009618aSAlexander Duyck __dev_uc_unsync(netdev, NULL); 682f009618aSAlexander Duyck __dev_mc_unsync(netdev, NULL); 683f009618aSAlexander Duyck 684a6a5580cSJeff Kirsher enic->mc_count = 0; 685a6a5580cSJeff Kirsher enic->uc_count = 0; 686a6a5580cSJeff Kirsher enic->flags = 0; 687a6a5580cSJeff Kirsher } 688a6a5580cSJeff Kirsher 689a6a5580cSJeff Kirsher static int enic_set_mac_addr(struct net_device *netdev, char *addr) 690a6a5580cSJeff Kirsher { 691a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 692a6a5580cSJeff Kirsher 6937335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) { 694a6a5580cSJeff Kirsher if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) 695a6a5580cSJeff Kirsher return -EADDRNOTAVAIL; 696a6a5580cSJeff Kirsher } else { 697a6a5580cSJeff Kirsher if (!is_valid_ether_addr(addr)) 698a6a5580cSJeff Kirsher return -EADDRNOTAVAIL; 699a6a5580cSJeff Kirsher } 700a6a5580cSJeff Kirsher 701a6a5580cSJeff Kirsher memcpy(netdev->dev_addr, addr, netdev->addr_len); 702a6a5580cSJeff Kirsher 703a6a5580cSJeff Kirsher return 0; 704a6a5580cSJeff Kirsher } 705a6a5580cSJeff Kirsher 706a6a5580cSJeff Kirsher static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) 707a6a5580cSJeff Kirsher { 708a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 709a6a5580cSJeff Kirsher struct sockaddr *saddr = p; 710a6a5580cSJeff Kirsher char *addr = saddr->sa_data; 711a6a5580cSJeff Kirsher int err; 712a6a5580cSJeff Kirsher 713a6a5580cSJeff Kirsher if (netif_running(enic->netdev)) { 714a6a5580cSJeff Kirsher err = enic_dev_del_station_addr(enic); 715a6a5580cSJeff Kirsher if (err) 716a6a5580cSJeff Kirsher return err; 717a6a5580cSJeff Kirsher } 718a6a5580cSJeff Kirsher 719a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, addr); 720a6a5580cSJeff Kirsher if (err) 721a6a5580cSJeff Kirsher return err; 722a6a5580cSJeff Kirsher 723a6a5580cSJeff Kirsher if (netif_running(enic->netdev)) { 724a6a5580cSJeff Kirsher err = enic_dev_add_station_addr(enic); 725a6a5580cSJeff Kirsher if (err) 726a6a5580cSJeff Kirsher return err; 727a6a5580cSJeff Kirsher } 728a6a5580cSJeff Kirsher 729a6a5580cSJeff Kirsher return err; 730a6a5580cSJeff Kirsher } 731a6a5580cSJeff Kirsher 732a6a5580cSJeff Kirsher static int enic_set_mac_address(struct net_device *netdev, void *p) 733a6a5580cSJeff Kirsher { 734a6a5580cSJeff Kirsher struct sockaddr *saddr = p; 735a6a5580cSJeff Kirsher char *addr = saddr->sa_data; 736a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 737a6a5580cSJeff Kirsher int err; 738a6a5580cSJeff Kirsher 739a6a5580cSJeff Kirsher err = enic_dev_del_station_addr(enic); 740a6a5580cSJeff Kirsher if (err) 741a6a5580cSJeff Kirsher return err; 742a6a5580cSJeff Kirsher 743a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, addr); 744a6a5580cSJeff Kirsher if (err) 745a6a5580cSJeff Kirsher return err; 746a6a5580cSJeff Kirsher 747a6a5580cSJeff Kirsher return enic_dev_add_station_addr(enic); 748a6a5580cSJeff Kirsher } 749a6a5580cSJeff Kirsher 750a6a5580cSJeff Kirsher /* netif_tx_lock held, BHs disabled */ 751a6a5580cSJeff Kirsher static void enic_set_rx_mode(struct net_device *netdev) 752a6a5580cSJeff Kirsher { 753a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 754a6a5580cSJeff Kirsher int directed = 1; 755a6a5580cSJeff Kirsher int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; 756a6a5580cSJeff Kirsher int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; 757a6a5580cSJeff Kirsher int promisc = (netdev->flags & IFF_PROMISC) || 758a6a5580cSJeff Kirsher netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; 759a6a5580cSJeff Kirsher int allmulti = (netdev->flags & IFF_ALLMULTI) || 760a6a5580cSJeff Kirsher netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; 761a6a5580cSJeff Kirsher unsigned int flags = netdev->flags | 762a6a5580cSJeff Kirsher (allmulti ? IFF_ALLMULTI : 0) | 763a6a5580cSJeff Kirsher (promisc ? IFF_PROMISC : 0); 764a6a5580cSJeff Kirsher 765a6a5580cSJeff Kirsher if (enic->flags != flags) { 766a6a5580cSJeff Kirsher enic->flags = flags; 767a6a5580cSJeff Kirsher enic_dev_packet_filter(enic, directed, 768a6a5580cSJeff Kirsher multicast, broadcast, promisc, allmulti); 769a6a5580cSJeff Kirsher } 770a6a5580cSJeff Kirsher 771a6a5580cSJeff Kirsher if (!promisc) { 772f009618aSAlexander Duyck __dev_uc_sync(netdev, enic_uc_sync, enic_uc_unsync); 773a6a5580cSJeff Kirsher if (!allmulti) 774f009618aSAlexander Duyck __dev_mc_sync(netdev, enic_mc_sync, enic_mc_unsync); 775a6a5580cSJeff Kirsher } 776a6a5580cSJeff Kirsher } 777a6a5580cSJeff Kirsher 778a6a5580cSJeff Kirsher /* netif_tx_lock held, BHs disabled */ 779a6a5580cSJeff Kirsher static void enic_tx_timeout(struct net_device *netdev) 780a6a5580cSJeff Kirsher { 781a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 782a6a5580cSJeff Kirsher schedule_work(&enic->reset); 783a6a5580cSJeff Kirsher } 784a6a5580cSJeff Kirsher 785a6a5580cSJeff Kirsher static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 786a6a5580cSJeff Kirsher { 787a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 7883f192795SRoopa Prabhu struct enic_port_profile *pp; 7893f192795SRoopa Prabhu int err; 790a6a5580cSJeff Kirsher 7913f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 7923f192795SRoopa Prabhu if (err) 7933f192795SRoopa Prabhu return err; 794a6a5580cSJeff Kirsher 795b8622cbdSRoopa Prabhu if (is_valid_ether_addr(mac) || is_zero_ether_addr(mac)) { 796b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) { 7973f192795SRoopa Prabhu memcpy(pp->vf_mac, mac, ETH_ALEN); 798a6a5580cSJeff Kirsher return 0; 799b4765833SRoopa Prabhu } else { 800b4765833SRoopa Prabhu /* 801b4765833SRoopa Prabhu * For sriov vf's set the mac in hw 802b4765833SRoopa Prabhu */ 803b4765833SRoopa Prabhu ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, 804b4765833SRoopa Prabhu vnic_dev_set_mac_addr, mac); 805b4765833SRoopa Prabhu return enic_dev_status_to_errno(err); 806b4765833SRoopa Prabhu } 807a6a5580cSJeff Kirsher } else 808a6a5580cSJeff Kirsher return -EINVAL; 809a6a5580cSJeff Kirsher } 810a6a5580cSJeff Kirsher 811a6a5580cSJeff Kirsher static int enic_set_vf_port(struct net_device *netdev, int vf, 812a6a5580cSJeff Kirsher struct nlattr *port[]) 813a6a5580cSJeff Kirsher { 814a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 815a6a5580cSJeff Kirsher struct enic_port_profile prev_pp; 8163f192795SRoopa Prabhu struct enic_port_profile *pp; 817a6a5580cSJeff Kirsher int err = 0, restore_pp = 1; 818a6a5580cSJeff Kirsher 8193f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 8203f192795SRoopa Prabhu if (err) 8213f192795SRoopa Prabhu return err; 822a6a5580cSJeff Kirsher 823a6a5580cSJeff Kirsher if (!port[IFLA_PORT_REQUEST]) 824a6a5580cSJeff Kirsher return -EOPNOTSUPP; 825a6a5580cSJeff Kirsher 8263f192795SRoopa Prabhu memcpy(&prev_pp, pp, sizeof(*enic->pp)); 8273f192795SRoopa Prabhu memset(pp, 0, sizeof(*enic->pp)); 828a6a5580cSJeff Kirsher 8293f192795SRoopa Prabhu pp->set |= ENIC_SET_REQUEST; 8303f192795SRoopa Prabhu pp->request = nla_get_u8(port[IFLA_PORT_REQUEST]); 831a6a5580cSJeff Kirsher 832a6a5580cSJeff Kirsher if (port[IFLA_PORT_PROFILE]) { 8333f192795SRoopa Prabhu pp->set |= ENIC_SET_NAME; 8343f192795SRoopa Prabhu memcpy(pp->name, nla_data(port[IFLA_PORT_PROFILE]), 835a6a5580cSJeff Kirsher PORT_PROFILE_MAX); 836a6a5580cSJeff Kirsher } 837a6a5580cSJeff Kirsher 838a6a5580cSJeff Kirsher if (port[IFLA_PORT_INSTANCE_UUID]) { 8393f192795SRoopa Prabhu pp->set |= ENIC_SET_INSTANCE; 8403f192795SRoopa Prabhu memcpy(pp->instance_uuid, 841a6a5580cSJeff Kirsher nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); 842a6a5580cSJeff Kirsher } 843a6a5580cSJeff Kirsher 844a6a5580cSJeff Kirsher if (port[IFLA_PORT_HOST_UUID]) { 8453f192795SRoopa Prabhu pp->set |= ENIC_SET_HOST; 8463f192795SRoopa Prabhu memcpy(pp->host_uuid, 847a6a5580cSJeff Kirsher nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); 848a6a5580cSJeff Kirsher } 849a6a5580cSJeff Kirsher 850b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) { 851a6a5580cSJeff Kirsher /* Special case handling: mac came from IFLA_VF_MAC */ 852a6a5580cSJeff Kirsher if (!is_zero_ether_addr(prev_pp.vf_mac)) 8533f192795SRoopa Prabhu memcpy(pp->mac_addr, prev_pp.vf_mac, ETH_ALEN); 854a6a5580cSJeff Kirsher 855b4765833SRoopa Prabhu if (is_zero_ether_addr(netdev->dev_addr)) 856da194316SDanny Kukawka eth_hw_addr_random(netdev); 857b4765833SRoopa Prabhu } else { 858b4765833SRoopa Prabhu /* SR-IOV VF: get mac from adapter */ 859b4765833SRoopa Prabhu ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, 860b4765833SRoopa Prabhu vnic_dev_get_mac_addr, pp->mac_addr); 861b4765833SRoopa Prabhu if (err) { 862b4765833SRoopa Prabhu netdev_err(netdev, "Error getting mac for vf %d\n", vf); 863b4765833SRoopa Prabhu memcpy(pp, &prev_pp, sizeof(*pp)); 864b4765833SRoopa Prabhu return enic_dev_status_to_errno(err); 865b4765833SRoopa Prabhu } 866b4765833SRoopa Prabhu } 867a6a5580cSJeff Kirsher 8683f192795SRoopa Prabhu err = enic_process_set_pp_request(enic, vf, &prev_pp, &restore_pp); 869a6a5580cSJeff Kirsher if (err) { 870a6a5580cSJeff Kirsher if (restore_pp) { 871a6a5580cSJeff Kirsher /* Things are still the way they were: Implicit 872a6a5580cSJeff Kirsher * DISASSOCIATE failed 873a6a5580cSJeff Kirsher */ 8743f192795SRoopa Prabhu memcpy(pp, &prev_pp, sizeof(*pp)); 875a6a5580cSJeff Kirsher } else { 8763f192795SRoopa Prabhu memset(pp, 0, sizeof(*pp)); 8773f192795SRoopa Prabhu if (vf == PORT_SELF_VF) 878a6a5580cSJeff Kirsher memset(netdev->dev_addr, 0, ETH_ALEN); 879a6a5580cSJeff Kirsher } 880a6a5580cSJeff Kirsher } else { 881a6a5580cSJeff Kirsher /* Set flag to indicate that the port assoc/disassoc 882a6a5580cSJeff Kirsher * request has been sent out to fw 883a6a5580cSJeff Kirsher */ 8843f192795SRoopa Prabhu pp->set |= ENIC_PORT_REQUEST_APPLIED; 885a6a5580cSJeff Kirsher 886a6a5580cSJeff Kirsher /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ 8873f192795SRoopa Prabhu if (pp->request == PORT_REQUEST_DISASSOCIATE) { 8883f192795SRoopa Prabhu memset(pp->mac_addr, 0, ETH_ALEN); 8893f192795SRoopa Prabhu if (vf == PORT_SELF_VF) 890a6a5580cSJeff Kirsher memset(netdev->dev_addr, 0, ETH_ALEN); 891a6a5580cSJeff Kirsher } 892a6a5580cSJeff Kirsher } 893a6a5580cSJeff Kirsher 894b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) 8953f192795SRoopa Prabhu memset(pp->vf_mac, 0, ETH_ALEN); 896a6a5580cSJeff Kirsher 897a6a5580cSJeff Kirsher return err; 898a6a5580cSJeff Kirsher } 899a6a5580cSJeff Kirsher 900a6a5580cSJeff Kirsher static int enic_get_vf_port(struct net_device *netdev, int vf, 901a6a5580cSJeff Kirsher struct sk_buff *skb) 902a6a5580cSJeff Kirsher { 903a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 904a6a5580cSJeff Kirsher u16 response = PORT_PROFILE_RESPONSE_SUCCESS; 9053f192795SRoopa Prabhu struct enic_port_profile *pp; 906a6a5580cSJeff Kirsher int err; 907a6a5580cSJeff Kirsher 9083f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 909a6a5580cSJeff Kirsher if (err) 910a6a5580cSJeff Kirsher return err; 911a6a5580cSJeff Kirsher 9123f192795SRoopa Prabhu if (!(pp->set & ENIC_PORT_REQUEST_APPLIED)) 9133f192795SRoopa Prabhu return -ENODATA; 9143f192795SRoopa Prabhu 9153f192795SRoopa Prabhu err = enic_process_get_pp_request(enic, vf, pp->request, &response); 9163f192795SRoopa Prabhu if (err) 9173f192795SRoopa Prabhu return err; 9183f192795SRoopa Prabhu 9191a106de6SDavid S. Miller if (nla_put_u16(skb, IFLA_PORT_REQUEST, pp->request) || 9201a106de6SDavid S. Miller nla_put_u16(skb, IFLA_PORT_RESPONSE, response) || 9211a106de6SDavid S. Miller ((pp->set & ENIC_SET_NAME) && 9221a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, pp->name)) || 9231a106de6SDavid S. Miller ((pp->set & ENIC_SET_INSTANCE) && 9241a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, 9251a106de6SDavid S. Miller pp->instance_uuid)) || 9261a106de6SDavid S. Miller ((pp->set & ENIC_SET_HOST) && 9271a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, pp->host_uuid))) 9281a106de6SDavid S. Miller goto nla_put_failure; 929a6a5580cSJeff Kirsher return 0; 930a6a5580cSJeff Kirsher 931a6a5580cSJeff Kirsher nla_put_failure: 932a6a5580cSJeff Kirsher return -EMSGSIZE; 933a6a5580cSJeff Kirsher } 934a6a5580cSJeff Kirsher 935a6a5580cSJeff Kirsher static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) 936a6a5580cSJeff Kirsher { 937a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 938a6a5580cSJeff Kirsher 939a6a5580cSJeff Kirsher if (!buf->os_buf) 940a6a5580cSJeff Kirsher return; 941a6a5580cSJeff Kirsher 942a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 943a6a5580cSJeff Kirsher buf->len, PCI_DMA_FROMDEVICE); 944a6a5580cSJeff Kirsher dev_kfree_skb_any(buf->os_buf); 945a6a5580cSJeff Kirsher } 946a6a5580cSJeff Kirsher 947a6a5580cSJeff Kirsher static int enic_rq_alloc_buf(struct vnic_rq *rq) 948a6a5580cSJeff Kirsher { 949a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 950a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 951a6a5580cSJeff Kirsher struct sk_buff *skb; 952a6a5580cSJeff Kirsher unsigned int len = netdev->mtu + VLAN_ETH_HLEN; 953a6a5580cSJeff Kirsher unsigned int os_buf_index = 0; 954a6a5580cSJeff Kirsher dma_addr_t dma_addr; 955a6a5580cSJeff Kirsher 956a6a5580cSJeff Kirsher skb = netdev_alloc_skb_ip_align(netdev, len); 957a6a5580cSJeff Kirsher if (!skb) 958a6a5580cSJeff Kirsher return -ENOMEM; 959a6a5580cSJeff Kirsher 960a6a5580cSJeff Kirsher dma_addr = pci_map_single(enic->pdev, skb->data, 961a6a5580cSJeff Kirsher len, PCI_DMA_FROMDEVICE); 962a6a5580cSJeff Kirsher 963a6a5580cSJeff Kirsher enic_queue_rq_desc(rq, skb, os_buf_index, 964a6a5580cSJeff Kirsher dma_addr, len); 965a6a5580cSJeff Kirsher 966a6a5580cSJeff Kirsher return 0; 967a6a5580cSJeff Kirsher } 968a6a5580cSJeff Kirsher 9697c2ce6e6SSujith Sankar static void enic_intr_update_pkt_size(struct vnic_rx_bytes_counter *pkt_size, 9707c2ce6e6SSujith Sankar u32 pkt_len) 9717c2ce6e6SSujith Sankar { 9727c2ce6e6SSujith Sankar if (ENIC_LARGE_PKT_THRESHOLD <= pkt_len) 9737c2ce6e6SSujith Sankar pkt_size->large_pkt_bytes_cnt += pkt_len; 9747c2ce6e6SSujith Sankar else 9757c2ce6e6SSujith Sankar pkt_size->small_pkt_bytes_cnt += pkt_len; 9767c2ce6e6SSujith Sankar } 9777c2ce6e6SSujith Sankar 978a6a5580cSJeff Kirsher static void enic_rq_indicate_buf(struct vnic_rq *rq, 979a6a5580cSJeff Kirsher struct cq_desc *cq_desc, struct vnic_rq_buf *buf, 980a6a5580cSJeff Kirsher int skipped, void *opaque) 981a6a5580cSJeff Kirsher { 982a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 983a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 984a6a5580cSJeff Kirsher struct sk_buff *skb; 9857c2ce6e6SSujith Sankar struct vnic_cq *cq = &enic->cq[enic_cq_rq(enic, rq->index)]; 986a6a5580cSJeff Kirsher 987a6a5580cSJeff Kirsher u8 type, color, eop, sop, ingress_port, vlan_stripped; 988a6a5580cSJeff Kirsher u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; 989a6a5580cSJeff Kirsher u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; 990a6a5580cSJeff Kirsher u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; 991a6a5580cSJeff Kirsher u8 packet_error; 992a6a5580cSJeff Kirsher u16 q_number, completed_index, bytes_written, vlan_tci, checksum; 993a6a5580cSJeff Kirsher u32 rss_hash; 994a6a5580cSJeff Kirsher 995a6a5580cSJeff Kirsher if (skipped) 996a6a5580cSJeff Kirsher return; 997a6a5580cSJeff Kirsher 998a6a5580cSJeff Kirsher skb = buf->os_buf; 999a6a5580cSJeff Kirsher prefetch(skb->data - NET_IP_ALIGN); 1000a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 1001a6a5580cSJeff Kirsher buf->len, PCI_DMA_FROMDEVICE); 1002a6a5580cSJeff Kirsher 1003a6a5580cSJeff Kirsher cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, 1004a6a5580cSJeff Kirsher &type, &color, &q_number, &completed_index, 1005a6a5580cSJeff Kirsher &ingress_port, &fcoe, &eop, &sop, &rss_type, 1006a6a5580cSJeff Kirsher &csum_not_calc, &rss_hash, &bytes_written, 1007a6a5580cSJeff Kirsher &packet_error, &vlan_stripped, &vlan_tci, &checksum, 1008a6a5580cSJeff Kirsher &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, 1009a6a5580cSJeff Kirsher &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, 1010a6a5580cSJeff Kirsher &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, 1011a6a5580cSJeff Kirsher &fcs_ok); 1012a6a5580cSJeff Kirsher 1013a6a5580cSJeff Kirsher if (packet_error) { 1014a6a5580cSJeff Kirsher 1015a6a5580cSJeff Kirsher if (!fcs_ok) { 1016a6a5580cSJeff Kirsher if (bytes_written > 0) 1017a6a5580cSJeff Kirsher enic->rq_bad_fcs++; 1018a6a5580cSJeff Kirsher else if (bytes_written == 0) 1019a6a5580cSJeff Kirsher enic->rq_truncated_pkts++; 1020a6a5580cSJeff Kirsher } 1021a6a5580cSJeff Kirsher 1022a6a5580cSJeff Kirsher dev_kfree_skb_any(skb); 1023a6a5580cSJeff Kirsher 1024a6a5580cSJeff Kirsher return; 1025a6a5580cSJeff Kirsher } 1026a6a5580cSJeff Kirsher 1027a6a5580cSJeff Kirsher if (eop && bytes_written > 0) { 1028a6a5580cSJeff Kirsher 1029a6a5580cSJeff Kirsher /* Good receive 1030a6a5580cSJeff Kirsher */ 1031a6a5580cSJeff Kirsher 1032a6a5580cSJeff Kirsher skb_put(skb, bytes_written); 1033a6a5580cSJeff Kirsher skb->protocol = eth_type_trans(skb, netdev); 1034bf751ba8Sgovindarajulu.v skb_record_rx_queue(skb, q_number); 1035bf751ba8Sgovindarajulu.v if (netdev->features & NETIF_F_RXHASH) { 10363739acddSTom Herbert skb_set_hash(skb, rss_hash, 10373739acddSTom Herbert (rss_type & 10383739acddSTom Herbert (NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX | 1039bf751ba8Sgovindarajulu.v NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 | 10403739acddSTom Herbert NIC_CFG_RSS_HASH_TYPE_TCP_IPV4)) ? 10413739acddSTom Herbert PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); 1042bf751ba8Sgovindarajulu.v } 1043a6a5580cSJeff Kirsher 1044a6a5580cSJeff Kirsher if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { 1045a6a5580cSJeff Kirsher skb->csum = htons(checksum); 1046a6a5580cSJeff Kirsher skb->ip_summed = CHECKSUM_COMPLETE; 1047a6a5580cSJeff Kirsher } 1048a6a5580cSJeff Kirsher 1049a6a5580cSJeff Kirsher if (vlan_stripped) 105086a9bad3SPatrick McHardy __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci); 1051a6a5580cSJeff Kirsher 1052a6a5580cSJeff Kirsher if (netdev->features & NETIF_F_GRO) 1053a6a5580cSJeff Kirsher napi_gro_receive(&enic->napi[q_number], skb); 1054a6a5580cSJeff Kirsher else 1055a6a5580cSJeff Kirsher netif_receive_skb(skb); 10567c2ce6e6SSujith Sankar if (enic->rx_coalesce_setting.use_adaptive_rx_coalesce) 10577c2ce6e6SSujith Sankar enic_intr_update_pkt_size(&cq->pkt_size_counter, 10587c2ce6e6SSujith Sankar bytes_written); 1059a6a5580cSJeff Kirsher } else { 1060a6a5580cSJeff Kirsher 1061a6a5580cSJeff Kirsher /* Buffer overflow 1062a6a5580cSJeff Kirsher */ 1063a6a5580cSJeff Kirsher 1064a6a5580cSJeff Kirsher dev_kfree_skb_any(skb); 1065a6a5580cSJeff Kirsher } 1066a6a5580cSJeff Kirsher } 1067a6a5580cSJeff Kirsher 1068a6a5580cSJeff Kirsher static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 1069a6a5580cSJeff Kirsher u8 type, u16 q_number, u16 completed_index, void *opaque) 1070a6a5580cSJeff Kirsher { 1071a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(vdev); 1072a6a5580cSJeff Kirsher 1073a6a5580cSJeff Kirsher vnic_rq_service(&enic->rq[q_number], cq_desc, 1074a6a5580cSJeff Kirsher completed_index, VNIC_RQ_RETURN_DESC, 1075a6a5580cSJeff Kirsher enic_rq_indicate_buf, opaque); 1076a6a5580cSJeff Kirsher 1077a6a5580cSJeff Kirsher return 0; 1078a6a5580cSJeff Kirsher } 1079a6a5580cSJeff Kirsher 1080a6a5580cSJeff Kirsher static int enic_poll(struct napi_struct *napi, int budget) 1081a6a5580cSJeff Kirsher { 1082a6a5580cSJeff Kirsher struct net_device *netdev = napi->dev; 1083a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1084a6a5580cSJeff Kirsher unsigned int cq_rq = enic_cq_rq(enic, 0); 1085a6a5580cSJeff Kirsher unsigned int cq_wq = enic_cq_wq(enic, 0); 1086a6a5580cSJeff Kirsher unsigned int intr = enic_legacy_io_intr(); 1087a6a5580cSJeff Kirsher unsigned int rq_work_to_do = budget; 1088a6a5580cSJeff Kirsher unsigned int wq_work_to_do = -1; /* no limit */ 10894c502549SEric W. Biederman unsigned int work_done, rq_work_done = 0, wq_work_done; 1090a6a5580cSJeff Kirsher int err; 1091a6a5580cSJeff Kirsher 1092a6a5580cSJeff Kirsher /* Service RQ (first) and WQ 1093a6a5580cSJeff Kirsher */ 1094a6a5580cSJeff Kirsher 10954c502549SEric W. Biederman if (budget > 0) 1096a6a5580cSJeff Kirsher rq_work_done = vnic_cq_service(&enic->cq[cq_rq], 1097a6a5580cSJeff Kirsher rq_work_to_do, enic_rq_service, NULL); 1098a6a5580cSJeff Kirsher 1099a6a5580cSJeff Kirsher wq_work_done = vnic_cq_service(&enic->cq[cq_wq], 1100a6a5580cSJeff Kirsher wq_work_to_do, enic_wq_service, NULL); 1101a6a5580cSJeff Kirsher 1102a6a5580cSJeff Kirsher /* Accumulate intr event credits for this polling 1103a6a5580cSJeff Kirsher * cycle. An intr event is the completion of a 1104a6a5580cSJeff Kirsher * a WQ or RQ packet. 1105a6a5580cSJeff Kirsher */ 1106a6a5580cSJeff Kirsher 1107a6a5580cSJeff Kirsher work_done = rq_work_done + wq_work_done; 1108a6a5580cSJeff Kirsher 1109a6a5580cSJeff Kirsher if (work_done > 0) 1110a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 1111a6a5580cSJeff Kirsher work_done, 1112a6a5580cSJeff Kirsher 0 /* don't unmask intr */, 1113a6a5580cSJeff Kirsher 0 /* don't reset intr timer */); 1114a6a5580cSJeff Kirsher 1115a6a5580cSJeff Kirsher err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); 1116a6a5580cSJeff Kirsher 1117a6a5580cSJeff Kirsher /* Buffer allocation failed. Stay in polling 1118a6a5580cSJeff Kirsher * mode so we can try to fill the ring again. 1119a6a5580cSJeff Kirsher */ 1120a6a5580cSJeff Kirsher 1121a6a5580cSJeff Kirsher if (err) 1122a6a5580cSJeff Kirsher rq_work_done = rq_work_to_do; 1123a6a5580cSJeff Kirsher 1124a6a5580cSJeff Kirsher if (rq_work_done < rq_work_to_do) { 1125a6a5580cSJeff Kirsher 1126a6a5580cSJeff Kirsher /* Some work done, but not enough to stay in polling, 1127a6a5580cSJeff Kirsher * exit polling 1128a6a5580cSJeff Kirsher */ 1129a6a5580cSJeff Kirsher 1130a6a5580cSJeff Kirsher napi_complete(napi); 1131a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[intr]); 1132a6a5580cSJeff Kirsher } 1133a6a5580cSJeff Kirsher 1134a6a5580cSJeff Kirsher return rq_work_done; 1135a6a5580cSJeff Kirsher } 1136a6a5580cSJeff Kirsher 11377c2ce6e6SSujith Sankar static void enic_set_int_moderation(struct enic *enic, struct vnic_rq *rq) 11387c2ce6e6SSujith Sankar { 11397c2ce6e6SSujith Sankar unsigned int intr = enic_msix_rq_intr(enic, rq->index); 11407c2ce6e6SSujith Sankar struct vnic_cq *cq = &enic->cq[enic_cq_rq(enic, rq->index)]; 11417c2ce6e6SSujith Sankar u32 timer = cq->tobe_rx_coal_timeval; 11427c2ce6e6SSujith Sankar 11437c2ce6e6SSujith Sankar if (cq->tobe_rx_coal_timeval != cq->cur_rx_coal_timeval) { 11447c2ce6e6SSujith Sankar vnic_intr_coalescing_timer_set(&enic->intr[intr], timer); 11457c2ce6e6SSujith Sankar cq->cur_rx_coal_timeval = cq->tobe_rx_coal_timeval; 11467c2ce6e6SSujith Sankar } 11477c2ce6e6SSujith Sankar } 11487c2ce6e6SSujith Sankar 11497c2ce6e6SSujith Sankar static void enic_calc_int_moderation(struct enic *enic, struct vnic_rq *rq) 11507c2ce6e6SSujith Sankar { 11517c2ce6e6SSujith Sankar struct enic_rx_coal *rx_coal = &enic->rx_coalesce_setting; 11527c2ce6e6SSujith Sankar struct vnic_cq *cq = &enic->cq[enic_cq_rq(enic, rq->index)]; 11537c2ce6e6SSujith Sankar struct vnic_rx_bytes_counter *pkt_size_counter = &cq->pkt_size_counter; 11547c2ce6e6SSujith Sankar int index; 11557c2ce6e6SSujith Sankar u32 timer; 11567c2ce6e6SSujith Sankar u32 range_start; 11577c2ce6e6SSujith Sankar u32 traffic; 11587c2ce6e6SSujith Sankar u64 delta; 11597c2ce6e6SSujith Sankar ktime_t now = ktime_get(); 11607c2ce6e6SSujith Sankar 11617c2ce6e6SSujith Sankar delta = ktime_us_delta(now, cq->prev_ts); 11627c2ce6e6SSujith Sankar if (delta < ENIC_AIC_TS_BREAK) 11637c2ce6e6SSujith Sankar return; 11647c2ce6e6SSujith Sankar cq->prev_ts = now; 11657c2ce6e6SSujith Sankar 11667c2ce6e6SSujith Sankar traffic = pkt_size_counter->large_pkt_bytes_cnt + 11677c2ce6e6SSujith Sankar pkt_size_counter->small_pkt_bytes_cnt; 11687c2ce6e6SSujith Sankar /* The table takes Mbps 11697c2ce6e6SSujith Sankar * traffic *= 8 => bits 11707c2ce6e6SSujith Sankar * traffic *= (10^6 / delta) => bps 11717c2ce6e6SSujith Sankar * traffic /= 10^6 => Mbps 11727c2ce6e6SSujith Sankar * 11737c2ce6e6SSujith Sankar * Combining, traffic *= (8 / delta) 11747c2ce6e6SSujith Sankar */ 11757c2ce6e6SSujith Sankar 11767c2ce6e6SSujith Sankar traffic <<= 3; 1177958c492cSGovindarajulu Varadarajan traffic = delta > UINT_MAX ? 0 : traffic / (u32)delta; 11787c2ce6e6SSujith Sankar 11797c2ce6e6SSujith Sankar for (index = 0; index < ENIC_MAX_COALESCE_TIMERS; index++) 11807c2ce6e6SSujith Sankar if (traffic < mod_table[index].rx_rate) 11817c2ce6e6SSujith Sankar break; 11827c2ce6e6SSujith Sankar range_start = (pkt_size_counter->small_pkt_bytes_cnt > 11837c2ce6e6SSujith Sankar pkt_size_counter->large_pkt_bytes_cnt << 1) ? 11847c2ce6e6SSujith Sankar rx_coal->small_pkt_range_start : 11857c2ce6e6SSujith Sankar rx_coal->large_pkt_range_start; 11867c2ce6e6SSujith Sankar timer = range_start + ((rx_coal->range_end - range_start) * 11877c2ce6e6SSujith Sankar mod_table[index].range_percent / 100); 11887c2ce6e6SSujith Sankar /* Damping */ 11897c2ce6e6SSujith Sankar cq->tobe_rx_coal_timeval = (timer + cq->tobe_rx_coal_timeval) >> 1; 11907c2ce6e6SSujith Sankar 11917c2ce6e6SSujith Sankar pkt_size_counter->large_pkt_bytes_cnt = 0; 11927c2ce6e6SSujith Sankar pkt_size_counter->small_pkt_bytes_cnt = 0; 11937c2ce6e6SSujith Sankar } 11947c2ce6e6SSujith Sankar 1195a6a5580cSJeff Kirsher static int enic_poll_msix(struct napi_struct *napi, int budget) 1196a6a5580cSJeff Kirsher { 1197a6a5580cSJeff Kirsher struct net_device *netdev = napi->dev; 1198a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1199a6a5580cSJeff Kirsher unsigned int rq = (napi - &enic->napi[0]); 1200a6a5580cSJeff Kirsher unsigned int cq = enic_cq_rq(enic, rq); 1201a6a5580cSJeff Kirsher unsigned int intr = enic_msix_rq_intr(enic, rq); 1202a6a5580cSJeff Kirsher unsigned int work_to_do = budget; 12034c502549SEric W. Biederman unsigned int work_done = 0; 1204a6a5580cSJeff Kirsher int err; 1205a6a5580cSJeff Kirsher 1206a6a5580cSJeff Kirsher /* Service RQ 1207a6a5580cSJeff Kirsher */ 1208a6a5580cSJeff Kirsher 12094c502549SEric W. Biederman if (budget > 0) 1210a6a5580cSJeff Kirsher work_done = vnic_cq_service(&enic->cq[cq], 1211a6a5580cSJeff Kirsher work_to_do, enic_rq_service, NULL); 1212a6a5580cSJeff Kirsher 1213a6a5580cSJeff Kirsher /* Return intr event credits for this polling 1214a6a5580cSJeff Kirsher * cycle. An intr event is the completion of a 1215a6a5580cSJeff Kirsher * RQ packet. 1216a6a5580cSJeff Kirsher */ 1217a6a5580cSJeff Kirsher 1218a6a5580cSJeff Kirsher if (work_done > 0) 1219a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 1220a6a5580cSJeff Kirsher work_done, 1221a6a5580cSJeff Kirsher 0 /* don't unmask intr */, 1222a6a5580cSJeff Kirsher 0 /* don't reset intr timer */); 1223a6a5580cSJeff Kirsher 1224a6a5580cSJeff Kirsher err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); 1225a6a5580cSJeff Kirsher 1226a6a5580cSJeff Kirsher /* Buffer allocation failed. Stay in polling mode 1227a6a5580cSJeff Kirsher * so we can try to fill the ring again. 1228a6a5580cSJeff Kirsher */ 1229a6a5580cSJeff Kirsher 1230a6a5580cSJeff Kirsher if (err) 1231a6a5580cSJeff Kirsher work_done = work_to_do; 12327c2ce6e6SSujith Sankar if (enic->rx_coalesce_setting.use_adaptive_rx_coalesce) 12337c2ce6e6SSujith Sankar /* Call the function which refreshes 12347c2ce6e6SSujith Sankar * the intr coalescing timer value based on 12357c2ce6e6SSujith Sankar * the traffic. This is supported only in 12367c2ce6e6SSujith Sankar * the case of MSI-x mode 12377c2ce6e6SSujith Sankar */ 12387c2ce6e6SSujith Sankar enic_calc_int_moderation(enic, &enic->rq[rq]); 1239a6a5580cSJeff Kirsher 1240a6a5580cSJeff Kirsher if (work_done < work_to_do) { 1241a6a5580cSJeff Kirsher 1242a6a5580cSJeff Kirsher /* Some work done, but not enough to stay in polling, 1243a6a5580cSJeff Kirsher * exit polling 1244a6a5580cSJeff Kirsher */ 1245a6a5580cSJeff Kirsher 1246a6a5580cSJeff Kirsher napi_complete(napi); 12477c2ce6e6SSujith Sankar if (enic->rx_coalesce_setting.use_adaptive_rx_coalesce) 12487c2ce6e6SSujith Sankar enic_set_int_moderation(enic, &enic->rq[rq]); 1249a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[intr]); 1250a6a5580cSJeff Kirsher } 1251a6a5580cSJeff Kirsher 1252a6a5580cSJeff Kirsher return work_done; 1253a6a5580cSJeff Kirsher } 1254a6a5580cSJeff Kirsher 1255a6a5580cSJeff Kirsher static void enic_notify_timer(unsigned long data) 1256a6a5580cSJeff Kirsher { 1257a6a5580cSJeff Kirsher struct enic *enic = (struct enic *)data; 1258a6a5580cSJeff Kirsher 1259a6a5580cSJeff Kirsher enic_notify_check(enic); 1260a6a5580cSJeff Kirsher 1261a6a5580cSJeff Kirsher mod_timer(&enic->notify_timer, 1262a6a5580cSJeff Kirsher round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); 1263a6a5580cSJeff Kirsher } 1264a6a5580cSJeff Kirsher 1265a6a5580cSJeff Kirsher static void enic_free_intr(struct enic *enic) 1266a6a5580cSJeff Kirsher { 1267a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1268a6a5580cSJeff Kirsher unsigned int i; 1269a6a5580cSJeff Kirsher 1270a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1271a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1272a6a5580cSJeff Kirsher free_irq(enic->pdev->irq, netdev); 1273a6a5580cSJeff Kirsher break; 1274a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1275a6a5580cSJeff Kirsher free_irq(enic->pdev->irq, enic); 1276a6a5580cSJeff Kirsher break; 1277a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1278a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->msix); i++) 1279a6a5580cSJeff Kirsher if (enic->msix[i].requested) 1280a6a5580cSJeff Kirsher free_irq(enic->msix_entry[i].vector, 1281a6a5580cSJeff Kirsher enic->msix[i].devid); 1282a6a5580cSJeff Kirsher break; 1283a6a5580cSJeff Kirsher default: 1284a6a5580cSJeff Kirsher break; 1285a6a5580cSJeff Kirsher } 1286a6a5580cSJeff Kirsher } 1287a6a5580cSJeff Kirsher 1288a6a5580cSJeff Kirsher static int enic_request_intr(struct enic *enic) 1289a6a5580cSJeff Kirsher { 1290a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1291a6a5580cSJeff Kirsher unsigned int i, intr; 1292a6a5580cSJeff Kirsher int err = 0; 1293a6a5580cSJeff Kirsher 1294a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1295a6a5580cSJeff Kirsher 1296a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1297a6a5580cSJeff Kirsher 1298a6a5580cSJeff Kirsher err = request_irq(enic->pdev->irq, enic_isr_legacy, 1299a6a5580cSJeff Kirsher IRQF_SHARED, netdev->name, netdev); 1300a6a5580cSJeff Kirsher break; 1301a6a5580cSJeff Kirsher 1302a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1303a6a5580cSJeff Kirsher 1304a6a5580cSJeff Kirsher err = request_irq(enic->pdev->irq, enic_isr_msi, 1305a6a5580cSJeff Kirsher 0, netdev->name, enic); 1306a6a5580cSJeff Kirsher break; 1307a6a5580cSJeff Kirsher 1308a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1309a6a5580cSJeff Kirsher 1310a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1311a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 13124505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 13134505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1314a6a5580cSJeff Kirsher "%.11s-rx-%d", netdev->name, i); 1315a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_rq; 1316a6a5580cSJeff Kirsher enic->msix[intr].devid = &enic->napi[i]; 1317a6a5580cSJeff Kirsher } 1318a6a5580cSJeff Kirsher 1319a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1320a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 13214505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 13224505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1323a6a5580cSJeff Kirsher "%.11s-tx-%d", netdev->name, i); 1324a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_wq; 1325a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1326a6a5580cSJeff Kirsher } 1327a6a5580cSJeff Kirsher 1328a6a5580cSJeff Kirsher intr = enic_msix_err_intr(enic); 13294505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 13304505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1331a6a5580cSJeff Kirsher "%.11s-err", netdev->name); 1332a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_err; 1333a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1334a6a5580cSJeff Kirsher 1335a6a5580cSJeff Kirsher intr = enic_msix_notify_intr(enic); 13364505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 13374505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1338a6a5580cSJeff Kirsher "%.11s-notify", netdev->name); 1339a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_notify; 1340a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1341a6a5580cSJeff Kirsher 1342a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->msix); i++) 1343a6a5580cSJeff Kirsher enic->msix[i].requested = 0; 1344a6a5580cSJeff Kirsher 1345a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) { 1346a6a5580cSJeff Kirsher err = request_irq(enic->msix_entry[i].vector, 1347a6a5580cSJeff Kirsher enic->msix[i].isr, 0, 1348a6a5580cSJeff Kirsher enic->msix[i].devname, 1349a6a5580cSJeff Kirsher enic->msix[i].devid); 1350a6a5580cSJeff Kirsher if (err) { 1351a6a5580cSJeff Kirsher enic_free_intr(enic); 1352a6a5580cSJeff Kirsher break; 1353a6a5580cSJeff Kirsher } 1354a6a5580cSJeff Kirsher enic->msix[i].requested = 1; 1355a6a5580cSJeff Kirsher } 1356a6a5580cSJeff Kirsher 1357a6a5580cSJeff Kirsher break; 1358a6a5580cSJeff Kirsher 1359a6a5580cSJeff Kirsher default: 1360a6a5580cSJeff Kirsher break; 1361a6a5580cSJeff Kirsher } 1362a6a5580cSJeff Kirsher 1363a6a5580cSJeff Kirsher return err; 1364a6a5580cSJeff Kirsher } 1365a6a5580cSJeff Kirsher 1366a6a5580cSJeff Kirsher static void enic_synchronize_irqs(struct enic *enic) 1367a6a5580cSJeff Kirsher { 1368a6a5580cSJeff Kirsher unsigned int i; 1369a6a5580cSJeff Kirsher 1370a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1371a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1372a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1373a6a5580cSJeff Kirsher synchronize_irq(enic->pdev->irq); 1374a6a5580cSJeff Kirsher break; 1375a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1376a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1377a6a5580cSJeff Kirsher synchronize_irq(enic->msix_entry[i].vector); 1378a6a5580cSJeff Kirsher break; 1379a6a5580cSJeff Kirsher default: 1380a6a5580cSJeff Kirsher break; 1381a6a5580cSJeff Kirsher } 1382a6a5580cSJeff Kirsher } 1383a6a5580cSJeff Kirsher 13847c2ce6e6SSujith Sankar static void enic_set_rx_coal_setting(struct enic *enic) 13857c2ce6e6SSujith Sankar { 13867c2ce6e6SSujith Sankar unsigned int speed; 13877c2ce6e6SSujith Sankar int index = -1; 13887c2ce6e6SSujith Sankar struct enic_rx_coal *rx_coal = &enic->rx_coalesce_setting; 13897c2ce6e6SSujith Sankar 13907c2ce6e6SSujith Sankar /* If intr mode is not MSIX, do not do adaptive coalescing */ 13917c2ce6e6SSujith Sankar if (VNIC_DEV_INTR_MODE_MSIX != vnic_dev_get_intr_mode(enic->vdev)) { 13927c2ce6e6SSujith Sankar netdev_info(enic->netdev, "INTR mode is not MSIX, Not initializing adaptive coalescing"); 13937c2ce6e6SSujith Sankar return; 13947c2ce6e6SSujith Sankar } 13957c2ce6e6SSujith Sankar 13967c2ce6e6SSujith Sankar /* 1. Read the link speed from fw 13977c2ce6e6SSujith Sankar * 2. Pick the default range for the speed 13987c2ce6e6SSujith Sankar * 3. Update it in enic->rx_coalesce_setting 13997c2ce6e6SSujith Sankar */ 14007c2ce6e6SSujith Sankar speed = vnic_dev_port_speed(enic->vdev); 14017c2ce6e6SSujith Sankar if (ENIC_LINK_SPEED_10G < speed) 14027c2ce6e6SSujith Sankar index = ENIC_LINK_40G_INDEX; 14037c2ce6e6SSujith Sankar else if (ENIC_LINK_SPEED_4G < speed) 14047c2ce6e6SSujith Sankar index = ENIC_LINK_10G_INDEX; 14057c2ce6e6SSujith Sankar else 14067c2ce6e6SSujith Sankar index = ENIC_LINK_4G_INDEX; 14077c2ce6e6SSujith Sankar 14087c2ce6e6SSujith Sankar rx_coal->small_pkt_range_start = mod_range[index].small_pkt_range_start; 14097c2ce6e6SSujith Sankar rx_coal->large_pkt_range_start = mod_range[index].large_pkt_range_start; 14107c2ce6e6SSujith Sankar rx_coal->range_end = ENIC_RX_COALESCE_RANGE_END; 14117c2ce6e6SSujith Sankar 14127c2ce6e6SSujith Sankar /* Start with the value provided by UCSM */ 14137c2ce6e6SSujith Sankar for (index = 0; index < enic->rq_count; index++) 14147c2ce6e6SSujith Sankar enic->cq[index].cur_rx_coal_timeval = 14157c2ce6e6SSujith Sankar enic->config.intr_timer_usec; 14167c2ce6e6SSujith Sankar 14177c2ce6e6SSujith Sankar rx_coal->use_adaptive_rx_coalesce = 1; 14187c2ce6e6SSujith Sankar } 14197c2ce6e6SSujith Sankar 1420a6a5580cSJeff Kirsher static int enic_dev_notify_set(struct enic *enic) 1421a6a5580cSJeff Kirsher { 1422a6a5580cSJeff Kirsher int err; 1423a6a5580cSJeff Kirsher 1424a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1425a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1426a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1427a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, 1428a6a5580cSJeff Kirsher enic_legacy_notify_intr()); 1429a6a5580cSJeff Kirsher break; 1430a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1431a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, 1432a6a5580cSJeff Kirsher enic_msix_notify_intr(enic)); 1433a6a5580cSJeff Kirsher break; 1434a6a5580cSJeff Kirsher default: 1435a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); 1436a6a5580cSJeff Kirsher break; 1437a6a5580cSJeff Kirsher } 1438a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1439a6a5580cSJeff Kirsher 1440a6a5580cSJeff Kirsher return err; 1441a6a5580cSJeff Kirsher } 1442a6a5580cSJeff Kirsher 1443a6a5580cSJeff Kirsher static void enic_notify_timer_start(struct enic *enic) 1444a6a5580cSJeff Kirsher { 1445a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1446a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1447a6a5580cSJeff Kirsher mod_timer(&enic->notify_timer, jiffies); 1448a6a5580cSJeff Kirsher break; 1449a6a5580cSJeff Kirsher default: 1450a6a5580cSJeff Kirsher /* Using intr for notification for INTx/MSI-X */ 1451a6a5580cSJeff Kirsher break; 1452a6a5580cSJeff Kirsher } 1453a6a5580cSJeff Kirsher } 1454a6a5580cSJeff Kirsher 1455a6a5580cSJeff Kirsher /* rtnl lock is held, process context */ 1456a6a5580cSJeff Kirsher static int enic_open(struct net_device *netdev) 1457a6a5580cSJeff Kirsher { 1458a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1459a6a5580cSJeff Kirsher unsigned int i; 1460a6a5580cSJeff Kirsher int err; 1461a6a5580cSJeff Kirsher 1462a6a5580cSJeff Kirsher err = enic_request_intr(enic); 1463a6a5580cSJeff Kirsher if (err) { 1464a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to request irq.\n"); 1465a6a5580cSJeff Kirsher return err; 1466a6a5580cSJeff Kirsher } 1467a6a5580cSJeff Kirsher 1468a6a5580cSJeff Kirsher err = enic_dev_notify_set(enic); 1469a6a5580cSJeff Kirsher if (err) { 1470a6a5580cSJeff Kirsher netdev_err(netdev, 1471a6a5580cSJeff Kirsher "Failed to alloc notify buffer, aborting.\n"); 1472a6a5580cSJeff Kirsher goto err_out_free_intr; 1473a6a5580cSJeff Kirsher } 1474a6a5580cSJeff Kirsher 1475a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1476a6a5580cSJeff Kirsher vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); 1477a6a5580cSJeff Kirsher /* Need at least one buffer on ring to get going */ 1478a6a5580cSJeff Kirsher if (vnic_rq_desc_used(&enic->rq[i]) == 0) { 1479a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to alloc receive buffers\n"); 1480a6a5580cSJeff Kirsher err = -ENOMEM; 1481a6a5580cSJeff Kirsher goto err_out_notify_unset; 1482a6a5580cSJeff Kirsher } 1483a6a5580cSJeff Kirsher } 1484a6a5580cSJeff Kirsher 1485a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 1486a6a5580cSJeff Kirsher vnic_wq_enable(&enic->wq[i]); 1487a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1488a6a5580cSJeff Kirsher vnic_rq_enable(&enic->rq[i]); 1489a6a5580cSJeff Kirsher 14907335903cSRoopa Prabhu if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) 1491a6a5580cSJeff Kirsher enic_dev_add_station_addr(enic); 14923f192795SRoopa Prabhu 1493a6a5580cSJeff Kirsher enic_set_rx_mode(netdev); 1494a6a5580cSJeff Kirsher 1495822473b6Sgovindarajulu.v netif_tx_wake_all_queues(netdev); 1496a6a5580cSJeff Kirsher 1497a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1498a6a5580cSJeff Kirsher napi_enable(&enic->napi[i]); 1499a6a5580cSJeff Kirsher 1500a6a5580cSJeff Kirsher enic_dev_enable(enic); 1501a6a5580cSJeff Kirsher 1502a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1503a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[i]); 1504a6a5580cSJeff Kirsher 1505a6a5580cSJeff Kirsher enic_notify_timer_start(enic); 1506a6a5580cSJeff Kirsher 1507a6a5580cSJeff Kirsher return 0; 1508a6a5580cSJeff Kirsher 1509a6a5580cSJeff Kirsher err_out_notify_unset: 1510a6a5580cSJeff Kirsher enic_dev_notify_unset(enic); 1511a6a5580cSJeff Kirsher err_out_free_intr: 1512a6a5580cSJeff Kirsher enic_free_intr(enic); 1513a6a5580cSJeff Kirsher 1514a6a5580cSJeff Kirsher return err; 1515a6a5580cSJeff Kirsher } 1516a6a5580cSJeff Kirsher 1517a6a5580cSJeff Kirsher /* rtnl lock is held, process context */ 1518a6a5580cSJeff Kirsher static int enic_stop(struct net_device *netdev) 1519a6a5580cSJeff Kirsher { 1520a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1521a6a5580cSJeff Kirsher unsigned int i; 1522a6a5580cSJeff Kirsher int err; 1523a6a5580cSJeff Kirsher 1524a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) { 1525a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[i]); 1526a6a5580cSJeff Kirsher (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ 1527a6a5580cSJeff Kirsher } 1528a6a5580cSJeff Kirsher 1529a6a5580cSJeff Kirsher enic_synchronize_irqs(enic); 1530a6a5580cSJeff Kirsher 1531a6a5580cSJeff Kirsher del_timer_sync(&enic->notify_timer); 1532a6a5580cSJeff Kirsher 1533a6a5580cSJeff Kirsher enic_dev_disable(enic); 1534a6a5580cSJeff Kirsher 1535a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1536a6a5580cSJeff Kirsher napi_disable(&enic->napi[i]); 1537a6a5580cSJeff Kirsher 1538a6a5580cSJeff Kirsher netif_carrier_off(netdev); 1539a6a5580cSJeff Kirsher netif_tx_disable(netdev); 15403f192795SRoopa Prabhu 15417335903cSRoopa Prabhu if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) 1542a6a5580cSJeff Kirsher enic_dev_del_station_addr(enic); 1543a6a5580cSJeff Kirsher 1544a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1545a6a5580cSJeff Kirsher err = vnic_wq_disable(&enic->wq[i]); 1546a6a5580cSJeff Kirsher if (err) 1547a6a5580cSJeff Kirsher return err; 1548a6a5580cSJeff Kirsher } 1549a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1550a6a5580cSJeff Kirsher err = vnic_rq_disable(&enic->rq[i]); 1551a6a5580cSJeff Kirsher if (err) 1552a6a5580cSJeff Kirsher return err; 1553a6a5580cSJeff Kirsher } 1554a6a5580cSJeff Kirsher 1555a6a5580cSJeff Kirsher enic_dev_notify_unset(enic); 1556a6a5580cSJeff Kirsher enic_free_intr(enic); 1557a6a5580cSJeff Kirsher 1558a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 1559a6a5580cSJeff Kirsher vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); 1560a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1561a6a5580cSJeff Kirsher vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); 1562a6a5580cSJeff Kirsher for (i = 0; i < enic->cq_count; i++) 1563a6a5580cSJeff Kirsher vnic_cq_clean(&enic->cq[i]); 1564a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1565a6a5580cSJeff Kirsher vnic_intr_clean(&enic->intr[i]); 1566a6a5580cSJeff Kirsher 1567a6a5580cSJeff Kirsher return 0; 1568a6a5580cSJeff Kirsher } 1569a6a5580cSJeff Kirsher 1570a6a5580cSJeff Kirsher static int enic_change_mtu(struct net_device *netdev, int new_mtu) 1571a6a5580cSJeff Kirsher { 1572a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1573a6a5580cSJeff Kirsher int running = netif_running(netdev); 1574a6a5580cSJeff Kirsher 1575a6a5580cSJeff Kirsher if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) 1576a6a5580cSJeff Kirsher return -EINVAL; 1577a6a5580cSJeff Kirsher 15787335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) 1579a6a5580cSJeff Kirsher return -EOPNOTSUPP; 1580a6a5580cSJeff Kirsher 1581a6a5580cSJeff Kirsher if (running) 1582a6a5580cSJeff Kirsher enic_stop(netdev); 1583a6a5580cSJeff Kirsher 1584a6a5580cSJeff Kirsher netdev->mtu = new_mtu; 1585a6a5580cSJeff Kirsher 1586a6a5580cSJeff Kirsher if (netdev->mtu > enic->port_mtu) 1587a6a5580cSJeff Kirsher netdev_warn(netdev, 1588a6a5580cSJeff Kirsher "interface MTU (%d) set higher than port MTU (%d)\n", 1589a6a5580cSJeff Kirsher netdev->mtu, enic->port_mtu); 1590a6a5580cSJeff Kirsher 1591a6a5580cSJeff Kirsher if (running) 1592a6a5580cSJeff Kirsher enic_open(netdev); 1593a6a5580cSJeff Kirsher 1594a6a5580cSJeff Kirsher return 0; 1595a6a5580cSJeff Kirsher } 1596a6a5580cSJeff Kirsher 1597a6a5580cSJeff Kirsher static void enic_change_mtu_work(struct work_struct *work) 1598a6a5580cSJeff Kirsher { 1599a6a5580cSJeff Kirsher struct enic *enic = container_of(work, struct enic, change_mtu_work); 1600a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1601a6a5580cSJeff Kirsher int new_mtu = vnic_dev_mtu(enic->vdev); 1602a6a5580cSJeff Kirsher int err; 1603a6a5580cSJeff Kirsher unsigned int i; 1604a6a5580cSJeff Kirsher 1605a6a5580cSJeff Kirsher new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); 1606a6a5580cSJeff Kirsher 1607a6a5580cSJeff Kirsher rtnl_lock(); 1608a6a5580cSJeff Kirsher 1609a6a5580cSJeff Kirsher /* Stop RQ */ 1610a6a5580cSJeff Kirsher del_timer_sync(&enic->notify_timer); 1611a6a5580cSJeff Kirsher 1612a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1613a6a5580cSJeff Kirsher napi_disable(&enic->napi[i]); 1614a6a5580cSJeff Kirsher 1615a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[0]); 1616a6a5580cSJeff Kirsher enic_synchronize_irqs(enic); 1617a6a5580cSJeff Kirsher err = vnic_rq_disable(&enic->rq[0]); 1618a6a5580cSJeff Kirsher if (err) { 1619e057590bSKonstantin Khlebnikov rtnl_unlock(); 1620a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to disable RQ.\n"); 1621a6a5580cSJeff Kirsher return; 1622a6a5580cSJeff Kirsher } 1623a6a5580cSJeff Kirsher vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); 1624a6a5580cSJeff Kirsher vnic_cq_clean(&enic->cq[0]); 1625a6a5580cSJeff Kirsher vnic_intr_clean(&enic->intr[0]); 1626a6a5580cSJeff Kirsher 1627a6a5580cSJeff Kirsher /* Fill RQ with new_mtu-sized buffers */ 1628a6a5580cSJeff Kirsher netdev->mtu = new_mtu; 1629a6a5580cSJeff Kirsher vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); 1630a6a5580cSJeff Kirsher /* Need at least one buffer on ring to get going */ 1631a6a5580cSJeff Kirsher if (vnic_rq_desc_used(&enic->rq[0]) == 0) { 1632e057590bSKonstantin Khlebnikov rtnl_unlock(); 1633a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to alloc receive buffers.\n"); 1634a6a5580cSJeff Kirsher return; 1635a6a5580cSJeff Kirsher } 1636a6a5580cSJeff Kirsher 1637a6a5580cSJeff Kirsher /* Start RQ */ 1638a6a5580cSJeff Kirsher vnic_rq_enable(&enic->rq[0]); 1639a6a5580cSJeff Kirsher napi_enable(&enic->napi[0]); 1640a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[0]); 1641a6a5580cSJeff Kirsher enic_notify_timer_start(enic); 1642a6a5580cSJeff Kirsher 1643a6a5580cSJeff Kirsher rtnl_unlock(); 1644a6a5580cSJeff Kirsher 1645a6a5580cSJeff Kirsher netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); 1646a6a5580cSJeff Kirsher } 1647a6a5580cSJeff Kirsher 1648a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 1649a6a5580cSJeff Kirsher static void enic_poll_controller(struct net_device *netdev) 1650a6a5580cSJeff Kirsher { 1651a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1652a6a5580cSJeff Kirsher struct vnic_dev *vdev = enic->vdev; 1653a6a5580cSJeff Kirsher unsigned int i, intr; 1654a6a5580cSJeff Kirsher 1655a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(vdev)) { 1656a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1657a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1658a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 1659a6a5580cSJeff Kirsher enic_isr_msix_rq(enic->msix_entry[intr].vector, 1660a6a5580cSJeff Kirsher &enic->napi[i]); 1661a6a5580cSJeff Kirsher } 1662a6a5580cSJeff Kirsher 1663a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1664a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 1665a6a5580cSJeff Kirsher enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); 1666a6a5580cSJeff Kirsher } 1667a6a5580cSJeff Kirsher 1668a6a5580cSJeff Kirsher break; 1669a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1670a6a5580cSJeff Kirsher enic_isr_msi(enic->pdev->irq, enic); 1671a6a5580cSJeff Kirsher break; 1672a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1673a6a5580cSJeff Kirsher enic_isr_legacy(enic->pdev->irq, netdev); 1674a6a5580cSJeff Kirsher break; 1675a6a5580cSJeff Kirsher default: 1676a6a5580cSJeff Kirsher break; 1677a6a5580cSJeff Kirsher } 1678a6a5580cSJeff Kirsher } 1679a6a5580cSJeff Kirsher #endif 1680a6a5580cSJeff Kirsher 1681a6a5580cSJeff Kirsher static int enic_dev_wait(struct vnic_dev *vdev, 1682a6a5580cSJeff Kirsher int (*start)(struct vnic_dev *, int), 1683a6a5580cSJeff Kirsher int (*finished)(struct vnic_dev *, int *), 1684a6a5580cSJeff Kirsher int arg) 1685a6a5580cSJeff Kirsher { 1686a6a5580cSJeff Kirsher unsigned long time; 1687a6a5580cSJeff Kirsher int done; 1688a6a5580cSJeff Kirsher int err; 1689a6a5580cSJeff Kirsher 1690a6a5580cSJeff Kirsher BUG_ON(in_interrupt()); 1691a6a5580cSJeff Kirsher 1692a6a5580cSJeff Kirsher err = start(vdev, arg); 1693a6a5580cSJeff Kirsher if (err) 1694a6a5580cSJeff Kirsher return err; 1695a6a5580cSJeff Kirsher 1696a6a5580cSJeff Kirsher /* Wait for func to complete...2 seconds max 1697a6a5580cSJeff Kirsher */ 1698a6a5580cSJeff Kirsher 1699a6a5580cSJeff Kirsher time = jiffies + (HZ * 2); 1700a6a5580cSJeff Kirsher do { 1701a6a5580cSJeff Kirsher 1702a6a5580cSJeff Kirsher err = finished(vdev, &done); 1703a6a5580cSJeff Kirsher if (err) 1704a6a5580cSJeff Kirsher return err; 1705a6a5580cSJeff Kirsher 1706a6a5580cSJeff Kirsher if (done) 1707a6a5580cSJeff Kirsher return 0; 1708a6a5580cSJeff Kirsher 1709a6a5580cSJeff Kirsher schedule_timeout_uninterruptible(HZ / 10); 1710a6a5580cSJeff Kirsher 1711a6a5580cSJeff Kirsher } while (time_after(time, jiffies)); 1712a6a5580cSJeff Kirsher 1713a6a5580cSJeff Kirsher return -ETIMEDOUT; 1714a6a5580cSJeff Kirsher } 1715a6a5580cSJeff Kirsher 1716a6a5580cSJeff Kirsher static int enic_dev_open(struct enic *enic) 1717a6a5580cSJeff Kirsher { 1718a6a5580cSJeff Kirsher int err; 1719a6a5580cSJeff Kirsher 1720a6a5580cSJeff Kirsher err = enic_dev_wait(enic->vdev, vnic_dev_open, 1721a6a5580cSJeff Kirsher vnic_dev_open_done, 0); 1722a6a5580cSJeff Kirsher if (err) 1723a6a5580cSJeff Kirsher dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", 1724a6a5580cSJeff Kirsher err); 1725a6a5580cSJeff Kirsher 1726a6a5580cSJeff Kirsher return err; 1727a6a5580cSJeff Kirsher } 1728a6a5580cSJeff Kirsher 1729a6a5580cSJeff Kirsher static int enic_dev_hang_reset(struct enic *enic) 1730a6a5580cSJeff Kirsher { 1731a6a5580cSJeff Kirsher int err; 1732a6a5580cSJeff Kirsher 1733a6a5580cSJeff Kirsher err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, 1734a6a5580cSJeff Kirsher vnic_dev_hang_reset_done, 0); 1735a6a5580cSJeff Kirsher if (err) 1736a6a5580cSJeff Kirsher netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", 1737a6a5580cSJeff Kirsher err); 1738a6a5580cSJeff Kirsher 1739a6a5580cSJeff Kirsher return err; 1740a6a5580cSJeff Kirsher } 1741a6a5580cSJeff Kirsher 1742a6a5580cSJeff Kirsher static int enic_set_rsskey(struct enic *enic) 1743a6a5580cSJeff Kirsher { 1744a6a5580cSJeff Kirsher dma_addr_t rss_key_buf_pa; 1745a6a5580cSJeff Kirsher union vnic_rss_key *rss_key_buf_va = NULL; 1746a6a5580cSJeff Kirsher union vnic_rss_key rss_key = { 1747a6a5580cSJeff Kirsher .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, 1748a6a5580cSJeff Kirsher .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, 1749a6a5580cSJeff Kirsher .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, 1750a6a5580cSJeff Kirsher .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, 1751a6a5580cSJeff Kirsher }; 1752a6a5580cSJeff Kirsher int err; 1753a6a5580cSJeff Kirsher 1754a6a5580cSJeff Kirsher rss_key_buf_va = pci_alloc_consistent(enic->pdev, 1755a6a5580cSJeff Kirsher sizeof(union vnic_rss_key), &rss_key_buf_pa); 1756a6a5580cSJeff Kirsher if (!rss_key_buf_va) 1757a6a5580cSJeff Kirsher return -ENOMEM; 1758a6a5580cSJeff Kirsher 1759a6a5580cSJeff Kirsher memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); 1760a6a5580cSJeff Kirsher 1761a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1762a6a5580cSJeff Kirsher err = enic_set_rss_key(enic, 1763a6a5580cSJeff Kirsher rss_key_buf_pa, 1764a6a5580cSJeff Kirsher sizeof(union vnic_rss_key)); 1765a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1766a6a5580cSJeff Kirsher 1767a6a5580cSJeff Kirsher pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), 1768a6a5580cSJeff Kirsher rss_key_buf_va, rss_key_buf_pa); 1769a6a5580cSJeff Kirsher 1770a6a5580cSJeff Kirsher return err; 1771a6a5580cSJeff Kirsher } 1772a6a5580cSJeff Kirsher 1773a6a5580cSJeff Kirsher static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) 1774a6a5580cSJeff Kirsher { 1775a6a5580cSJeff Kirsher dma_addr_t rss_cpu_buf_pa; 1776a6a5580cSJeff Kirsher union vnic_rss_cpu *rss_cpu_buf_va = NULL; 1777a6a5580cSJeff Kirsher unsigned int i; 1778a6a5580cSJeff Kirsher int err; 1779a6a5580cSJeff Kirsher 1780a6a5580cSJeff Kirsher rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, 1781a6a5580cSJeff Kirsher sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); 1782a6a5580cSJeff Kirsher if (!rss_cpu_buf_va) 1783a6a5580cSJeff Kirsher return -ENOMEM; 1784a6a5580cSJeff Kirsher 1785a6a5580cSJeff Kirsher for (i = 0; i < (1 << rss_hash_bits); i++) 1786a6a5580cSJeff Kirsher (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; 1787a6a5580cSJeff Kirsher 1788a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1789a6a5580cSJeff Kirsher err = enic_set_rss_cpu(enic, 1790a6a5580cSJeff Kirsher rss_cpu_buf_pa, 1791a6a5580cSJeff Kirsher sizeof(union vnic_rss_cpu)); 1792a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1793a6a5580cSJeff Kirsher 1794a6a5580cSJeff Kirsher pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), 1795a6a5580cSJeff Kirsher rss_cpu_buf_va, rss_cpu_buf_pa); 1796a6a5580cSJeff Kirsher 1797a6a5580cSJeff Kirsher return err; 1798a6a5580cSJeff Kirsher } 1799a6a5580cSJeff Kirsher 1800a6a5580cSJeff Kirsher static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, 1801a6a5580cSJeff Kirsher u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) 1802a6a5580cSJeff Kirsher { 1803a6a5580cSJeff Kirsher const u8 tso_ipid_split_en = 0; 1804a6a5580cSJeff Kirsher const u8 ig_vlan_strip_en = 1; 1805a6a5580cSJeff Kirsher int err; 1806a6a5580cSJeff Kirsher 1807a6a5580cSJeff Kirsher /* Enable VLAN tag stripping. 1808a6a5580cSJeff Kirsher */ 1809a6a5580cSJeff Kirsher 1810a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1811a6a5580cSJeff Kirsher err = enic_set_nic_cfg(enic, 1812a6a5580cSJeff Kirsher rss_default_cpu, rss_hash_type, 1813a6a5580cSJeff Kirsher rss_hash_bits, rss_base_cpu, 1814a6a5580cSJeff Kirsher rss_enable, tso_ipid_split_en, 1815a6a5580cSJeff Kirsher ig_vlan_strip_en); 1816a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1817a6a5580cSJeff Kirsher 1818a6a5580cSJeff Kirsher return err; 1819a6a5580cSJeff Kirsher } 1820a6a5580cSJeff Kirsher 1821a6a5580cSJeff Kirsher static int enic_set_rss_nic_cfg(struct enic *enic) 1822a6a5580cSJeff Kirsher { 1823a6a5580cSJeff Kirsher struct device *dev = enic_get_dev(enic); 1824a6a5580cSJeff Kirsher const u8 rss_default_cpu = 0; 1825a6a5580cSJeff Kirsher const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | 1826a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | 1827a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_IPV6 | 1828a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; 1829a6a5580cSJeff Kirsher const u8 rss_hash_bits = 7; 1830a6a5580cSJeff Kirsher const u8 rss_base_cpu = 0; 1831a6a5580cSJeff Kirsher u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); 1832a6a5580cSJeff Kirsher 1833a6a5580cSJeff Kirsher if (rss_enable) { 1834a6a5580cSJeff Kirsher if (!enic_set_rsskey(enic)) { 1835a6a5580cSJeff Kirsher if (enic_set_rsscpu(enic, rss_hash_bits)) { 1836a6a5580cSJeff Kirsher rss_enable = 0; 1837a6a5580cSJeff Kirsher dev_warn(dev, "RSS disabled, " 1838a6a5580cSJeff Kirsher "Failed to set RSS cpu indirection table."); 1839a6a5580cSJeff Kirsher } 1840a6a5580cSJeff Kirsher } else { 1841a6a5580cSJeff Kirsher rss_enable = 0; 1842a6a5580cSJeff Kirsher dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); 1843a6a5580cSJeff Kirsher } 1844a6a5580cSJeff Kirsher } 1845a6a5580cSJeff Kirsher 1846a6a5580cSJeff Kirsher return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, 1847a6a5580cSJeff Kirsher rss_hash_bits, rss_base_cpu, rss_enable); 1848a6a5580cSJeff Kirsher } 1849a6a5580cSJeff Kirsher 1850a6a5580cSJeff Kirsher static void enic_reset(struct work_struct *work) 1851a6a5580cSJeff Kirsher { 1852a6a5580cSJeff Kirsher struct enic *enic = container_of(work, struct enic, reset); 1853a6a5580cSJeff Kirsher 1854a6a5580cSJeff Kirsher if (!netif_running(enic->netdev)) 1855a6a5580cSJeff Kirsher return; 1856a6a5580cSJeff Kirsher 1857a6a5580cSJeff Kirsher rtnl_lock(); 1858a6a5580cSJeff Kirsher 18590b038566SNeel Patel spin_lock(&enic->enic_api_lock); 1860a6a5580cSJeff Kirsher enic_dev_hang_notify(enic); 1861a6a5580cSJeff Kirsher enic_stop(enic->netdev); 1862a6a5580cSJeff Kirsher enic_dev_hang_reset(enic); 1863a6a5580cSJeff Kirsher enic_reset_addr_lists(enic); 1864a6a5580cSJeff Kirsher enic_init_vnic_resources(enic); 1865a6a5580cSJeff Kirsher enic_set_rss_nic_cfg(enic); 1866a6a5580cSJeff Kirsher enic_dev_set_ig_vlan_rewrite_mode(enic); 1867a6a5580cSJeff Kirsher enic_open(enic->netdev); 18680b038566SNeel Patel spin_unlock(&enic->enic_api_lock); 1869d765bb41SNeel Patel call_netdevice_notifiers(NETDEV_REBOOT, enic->netdev); 1870a6a5580cSJeff Kirsher 1871a6a5580cSJeff Kirsher rtnl_unlock(); 1872a6a5580cSJeff Kirsher } 1873a6a5580cSJeff Kirsher 1874a6a5580cSJeff Kirsher static int enic_set_intr_mode(struct enic *enic) 1875a6a5580cSJeff Kirsher { 1876a6a5580cSJeff Kirsher unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); 1877a6a5580cSJeff Kirsher unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); 1878a6a5580cSJeff Kirsher unsigned int i; 1879a6a5580cSJeff Kirsher 1880a6a5580cSJeff Kirsher /* Set interrupt mode (INTx, MSI, MSI-X) depending 1881a6a5580cSJeff Kirsher * on system capabilities. 1882a6a5580cSJeff Kirsher * 1883a6a5580cSJeff Kirsher * Try MSI-X first 1884a6a5580cSJeff Kirsher * 1885a6a5580cSJeff Kirsher * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs 1886a6a5580cSJeff Kirsher * (the second to last INTR is used for WQ/RQ errors) 1887a6a5580cSJeff Kirsher * (the last INTR is used for notifications) 1888a6a5580cSJeff Kirsher */ 1889a6a5580cSJeff Kirsher 1890a6a5580cSJeff Kirsher BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); 1891a6a5580cSJeff Kirsher for (i = 0; i < n + m + 2; i++) 1892a6a5580cSJeff Kirsher enic->msix_entry[i].entry = i; 1893a6a5580cSJeff Kirsher 1894a6a5580cSJeff Kirsher /* Use multiple RQs if RSS is enabled 1895a6a5580cSJeff Kirsher */ 1896a6a5580cSJeff Kirsher 1897a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, RSS) && 1898a6a5580cSJeff Kirsher enic->config.intr_mode < 1 && 1899a6a5580cSJeff Kirsher enic->rq_count >= n && 1900a6a5580cSJeff Kirsher enic->wq_count >= m && 1901a6a5580cSJeff Kirsher enic->cq_count >= n + m && 1902a6a5580cSJeff Kirsher enic->intr_count >= n + m + 2) { 1903a6a5580cSJeff Kirsher 1904abbb6a37SAlexander Gordeev if (pci_enable_msix_range(enic->pdev, enic->msix_entry, 1905abbb6a37SAlexander Gordeev n + m + 2, n + m + 2) > 0) { 1906a6a5580cSJeff Kirsher 1907a6a5580cSJeff Kirsher enic->rq_count = n; 1908a6a5580cSJeff Kirsher enic->wq_count = m; 1909a6a5580cSJeff Kirsher enic->cq_count = n + m; 1910a6a5580cSJeff Kirsher enic->intr_count = n + m + 2; 1911a6a5580cSJeff Kirsher 1912a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, 1913a6a5580cSJeff Kirsher VNIC_DEV_INTR_MODE_MSIX); 1914a6a5580cSJeff Kirsher 1915a6a5580cSJeff Kirsher return 0; 1916a6a5580cSJeff Kirsher } 1917a6a5580cSJeff Kirsher } 1918a6a5580cSJeff Kirsher 1919a6a5580cSJeff Kirsher if (enic->config.intr_mode < 1 && 1920a6a5580cSJeff Kirsher enic->rq_count >= 1 && 1921a6a5580cSJeff Kirsher enic->wq_count >= m && 1922a6a5580cSJeff Kirsher enic->cq_count >= 1 + m && 1923a6a5580cSJeff Kirsher enic->intr_count >= 1 + m + 2) { 1924abbb6a37SAlexander Gordeev if (pci_enable_msix_range(enic->pdev, enic->msix_entry, 1925abbb6a37SAlexander Gordeev 1 + m + 2, 1 + m + 2) > 0) { 1926a6a5580cSJeff Kirsher 1927a6a5580cSJeff Kirsher enic->rq_count = 1; 1928a6a5580cSJeff Kirsher enic->wq_count = m; 1929a6a5580cSJeff Kirsher enic->cq_count = 1 + m; 1930a6a5580cSJeff Kirsher enic->intr_count = 1 + m + 2; 1931a6a5580cSJeff Kirsher 1932a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, 1933a6a5580cSJeff Kirsher VNIC_DEV_INTR_MODE_MSIX); 1934a6a5580cSJeff Kirsher 1935a6a5580cSJeff Kirsher return 0; 1936a6a5580cSJeff Kirsher } 1937a6a5580cSJeff Kirsher } 1938a6a5580cSJeff Kirsher 1939a6a5580cSJeff Kirsher /* Next try MSI 1940a6a5580cSJeff Kirsher * 1941a6a5580cSJeff Kirsher * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR 1942a6a5580cSJeff Kirsher */ 1943a6a5580cSJeff Kirsher 1944a6a5580cSJeff Kirsher if (enic->config.intr_mode < 2 && 1945a6a5580cSJeff Kirsher enic->rq_count >= 1 && 1946a6a5580cSJeff Kirsher enic->wq_count >= 1 && 1947a6a5580cSJeff Kirsher enic->cq_count >= 2 && 1948a6a5580cSJeff Kirsher enic->intr_count >= 1 && 1949a6a5580cSJeff Kirsher !pci_enable_msi(enic->pdev)) { 1950a6a5580cSJeff Kirsher 1951a6a5580cSJeff Kirsher enic->rq_count = 1; 1952a6a5580cSJeff Kirsher enic->wq_count = 1; 1953a6a5580cSJeff Kirsher enic->cq_count = 2; 1954a6a5580cSJeff Kirsher enic->intr_count = 1; 1955a6a5580cSJeff Kirsher 1956a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); 1957a6a5580cSJeff Kirsher 1958a6a5580cSJeff Kirsher return 0; 1959a6a5580cSJeff Kirsher } 1960a6a5580cSJeff Kirsher 1961a6a5580cSJeff Kirsher /* Next try INTx 1962a6a5580cSJeff Kirsher * 1963a6a5580cSJeff Kirsher * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs 1964a6a5580cSJeff Kirsher * (the first INTR is used for WQ/RQ) 1965a6a5580cSJeff Kirsher * (the second INTR is used for WQ/RQ errors) 1966a6a5580cSJeff Kirsher * (the last INTR is used for notifications) 1967a6a5580cSJeff Kirsher */ 1968a6a5580cSJeff Kirsher 1969a6a5580cSJeff Kirsher if (enic->config.intr_mode < 3 && 1970a6a5580cSJeff Kirsher enic->rq_count >= 1 && 1971a6a5580cSJeff Kirsher enic->wq_count >= 1 && 1972a6a5580cSJeff Kirsher enic->cq_count >= 2 && 1973a6a5580cSJeff Kirsher enic->intr_count >= 3) { 1974a6a5580cSJeff Kirsher 1975a6a5580cSJeff Kirsher enic->rq_count = 1; 1976a6a5580cSJeff Kirsher enic->wq_count = 1; 1977a6a5580cSJeff Kirsher enic->cq_count = 2; 1978a6a5580cSJeff Kirsher enic->intr_count = 3; 1979a6a5580cSJeff Kirsher 1980a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); 1981a6a5580cSJeff Kirsher 1982a6a5580cSJeff Kirsher return 0; 1983a6a5580cSJeff Kirsher } 1984a6a5580cSJeff Kirsher 1985a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); 1986a6a5580cSJeff Kirsher 1987a6a5580cSJeff Kirsher return -EINVAL; 1988a6a5580cSJeff Kirsher } 1989a6a5580cSJeff Kirsher 1990a6a5580cSJeff Kirsher static void enic_clear_intr_mode(struct enic *enic) 1991a6a5580cSJeff Kirsher { 1992a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1993a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1994a6a5580cSJeff Kirsher pci_disable_msix(enic->pdev); 1995a6a5580cSJeff Kirsher break; 1996a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1997a6a5580cSJeff Kirsher pci_disable_msi(enic->pdev); 1998a6a5580cSJeff Kirsher break; 1999a6a5580cSJeff Kirsher default: 2000a6a5580cSJeff Kirsher break; 2001a6a5580cSJeff Kirsher } 2002a6a5580cSJeff Kirsher 2003a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); 2004a6a5580cSJeff Kirsher } 2005a6a5580cSJeff Kirsher 2006a6a5580cSJeff Kirsher static const struct net_device_ops enic_netdev_dynamic_ops = { 2007a6a5580cSJeff Kirsher .ndo_open = enic_open, 2008a6a5580cSJeff Kirsher .ndo_stop = enic_stop, 2009a6a5580cSJeff Kirsher .ndo_start_xmit = enic_hard_start_xmit, 2010a6a5580cSJeff Kirsher .ndo_get_stats64 = enic_get_stats, 2011a6a5580cSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 2012a6a5580cSJeff Kirsher .ndo_set_rx_mode = enic_set_rx_mode, 2013a6a5580cSJeff Kirsher .ndo_set_mac_address = enic_set_mac_address_dynamic, 2014a6a5580cSJeff Kirsher .ndo_change_mtu = enic_change_mtu, 2015a6a5580cSJeff Kirsher .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, 2016a6a5580cSJeff Kirsher .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, 2017a6a5580cSJeff Kirsher .ndo_tx_timeout = enic_tx_timeout, 2018a6a5580cSJeff Kirsher .ndo_set_vf_port = enic_set_vf_port, 2019a6a5580cSJeff Kirsher .ndo_get_vf_port = enic_get_vf_port, 2020a6a5580cSJeff Kirsher .ndo_set_vf_mac = enic_set_vf_mac, 2021a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2022a6a5580cSJeff Kirsher .ndo_poll_controller = enic_poll_controller, 2023a6a5580cSJeff Kirsher #endif 2024a6a5580cSJeff Kirsher }; 2025a6a5580cSJeff Kirsher 2026a6a5580cSJeff Kirsher static const struct net_device_ops enic_netdev_ops = { 2027a6a5580cSJeff Kirsher .ndo_open = enic_open, 2028a6a5580cSJeff Kirsher .ndo_stop = enic_stop, 2029a6a5580cSJeff Kirsher .ndo_start_xmit = enic_hard_start_xmit, 2030a6a5580cSJeff Kirsher .ndo_get_stats64 = enic_get_stats, 2031a6a5580cSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 2032a6a5580cSJeff Kirsher .ndo_set_mac_address = enic_set_mac_address, 2033a6a5580cSJeff Kirsher .ndo_set_rx_mode = enic_set_rx_mode, 2034a6a5580cSJeff Kirsher .ndo_change_mtu = enic_change_mtu, 2035a6a5580cSJeff Kirsher .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, 2036a6a5580cSJeff Kirsher .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, 2037a6a5580cSJeff Kirsher .ndo_tx_timeout = enic_tx_timeout, 20383f192795SRoopa Prabhu .ndo_set_vf_port = enic_set_vf_port, 20393f192795SRoopa Prabhu .ndo_get_vf_port = enic_get_vf_port, 20403f192795SRoopa Prabhu .ndo_set_vf_mac = enic_set_vf_mac, 2041a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2042a6a5580cSJeff Kirsher .ndo_poll_controller = enic_poll_controller, 2043a6a5580cSJeff Kirsher #endif 2044a6a5580cSJeff Kirsher }; 2045a6a5580cSJeff Kirsher 2046a6a5580cSJeff Kirsher static void enic_dev_deinit(struct enic *enic) 2047a6a5580cSJeff Kirsher { 2048a6a5580cSJeff Kirsher unsigned int i; 2049a6a5580cSJeff Kirsher 2050a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 2051a6a5580cSJeff Kirsher netif_napi_del(&enic->napi[i]); 2052a6a5580cSJeff Kirsher 2053a6a5580cSJeff Kirsher enic_free_vnic_resources(enic); 2054a6a5580cSJeff Kirsher enic_clear_intr_mode(enic); 2055a6a5580cSJeff Kirsher } 2056a6a5580cSJeff Kirsher 2057a6a5580cSJeff Kirsher static int enic_dev_init(struct enic *enic) 2058a6a5580cSJeff Kirsher { 2059a6a5580cSJeff Kirsher struct device *dev = enic_get_dev(enic); 2060a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 2061a6a5580cSJeff Kirsher unsigned int i; 2062a6a5580cSJeff Kirsher int err; 2063a6a5580cSJeff Kirsher 2064a6a5580cSJeff Kirsher /* Get interrupt coalesce timer info */ 2065a6a5580cSJeff Kirsher err = enic_dev_intr_coal_timer_info(enic); 2066a6a5580cSJeff Kirsher if (err) { 2067a6a5580cSJeff Kirsher dev_warn(dev, "Using default conversion factor for " 2068a6a5580cSJeff Kirsher "interrupt coalesce timer\n"); 2069a6a5580cSJeff Kirsher vnic_dev_intr_coal_timer_info_default(enic->vdev); 2070a6a5580cSJeff Kirsher } 2071a6a5580cSJeff Kirsher 2072a6a5580cSJeff Kirsher /* Get vNIC configuration 2073a6a5580cSJeff Kirsher */ 2074a6a5580cSJeff Kirsher 2075a6a5580cSJeff Kirsher err = enic_get_vnic_config(enic); 2076a6a5580cSJeff Kirsher if (err) { 2077a6a5580cSJeff Kirsher dev_err(dev, "Get vNIC configuration failed, aborting\n"); 2078a6a5580cSJeff Kirsher return err; 2079a6a5580cSJeff Kirsher } 2080a6a5580cSJeff Kirsher 2081a6a5580cSJeff Kirsher /* Get available resource counts 2082a6a5580cSJeff Kirsher */ 2083a6a5580cSJeff Kirsher 2084a6a5580cSJeff Kirsher enic_get_res_counts(enic); 2085a6a5580cSJeff Kirsher 2086a6a5580cSJeff Kirsher /* Set interrupt mode based on resource counts and system 2087a6a5580cSJeff Kirsher * capabilities 2088a6a5580cSJeff Kirsher */ 2089a6a5580cSJeff Kirsher 2090a6a5580cSJeff Kirsher err = enic_set_intr_mode(enic); 2091a6a5580cSJeff Kirsher if (err) { 2092a6a5580cSJeff Kirsher dev_err(dev, "Failed to set intr mode based on resource " 2093a6a5580cSJeff Kirsher "counts and system capabilities, aborting\n"); 2094a6a5580cSJeff Kirsher return err; 2095a6a5580cSJeff Kirsher } 2096a6a5580cSJeff Kirsher 2097a6a5580cSJeff Kirsher /* Allocate and configure vNIC resources 2098a6a5580cSJeff Kirsher */ 2099a6a5580cSJeff Kirsher 2100a6a5580cSJeff Kirsher err = enic_alloc_vnic_resources(enic); 2101a6a5580cSJeff Kirsher if (err) { 2102a6a5580cSJeff Kirsher dev_err(dev, "Failed to alloc vNIC resources, aborting\n"); 2103a6a5580cSJeff Kirsher goto err_out_free_vnic_resources; 2104a6a5580cSJeff Kirsher } 2105a6a5580cSJeff Kirsher 2106a6a5580cSJeff Kirsher enic_init_vnic_resources(enic); 2107a6a5580cSJeff Kirsher 2108a6a5580cSJeff Kirsher err = enic_set_rss_nic_cfg(enic); 2109a6a5580cSJeff Kirsher if (err) { 2110a6a5580cSJeff Kirsher dev_err(dev, "Failed to config nic, aborting\n"); 2111a6a5580cSJeff Kirsher goto err_out_free_vnic_resources; 2112a6a5580cSJeff Kirsher } 2113a6a5580cSJeff Kirsher 2114a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 2115a6a5580cSJeff Kirsher default: 2116a6a5580cSJeff Kirsher netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); 2117a6a5580cSJeff Kirsher break; 2118a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 2119a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 2120a6a5580cSJeff Kirsher netif_napi_add(netdev, &enic->napi[i], 2121a6a5580cSJeff Kirsher enic_poll_msix, 64); 2122a6a5580cSJeff Kirsher break; 2123a6a5580cSJeff Kirsher } 2124a6a5580cSJeff Kirsher 2125a6a5580cSJeff Kirsher return 0; 2126a6a5580cSJeff Kirsher 2127a6a5580cSJeff Kirsher err_out_free_vnic_resources: 2128a6a5580cSJeff Kirsher enic_clear_intr_mode(enic); 2129a6a5580cSJeff Kirsher enic_free_vnic_resources(enic); 2130a6a5580cSJeff Kirsher 2131a6a5580cSJeff Kirsher return err; 2132a6a5580cSJeff Kirsher } 2133a6a5580cSJeff Kirsher 2134a6a5580cSJeff Kirsher static void enic_iounmap(struct enic *enic) 2135a6a5580cSJeff Kirsher { 2136a6a5580cSJeff Kirsher unsigned int i; 2137a6a5580cSJeff Kirsher 2138a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->bar); i++) 2139a6a5580cSJeff Kirsher if (enic->bar[i].vaddr) 2140a6a5580cSJeff Kirsher iounmap(enic->bar[i].vaddr); 2141a6a5580cSJeff Kirsher } 2142a6a5580cSJeff Kirsher 21431dd06ae8SGreg Kroah-Hartman static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2144a6a5580cSJeff Kirsher { 2145a6a5580cSJeff Kirsher struct device *dev = &pdev->dev; 2146a6a5580cSJeff Kirsher struct net_device *netdev; 2147a6a5580cSJeff Kirsher struct enic *enic; 2148a6a5580cSJeff Kirsher int using_dac = 0; 2149a6a5580cSJeff Kirsher unsigned int i; 2150a6a5580cSJeff Kirsher int err; 21518749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 21528749b427SRoopa Prabhu int pos = 0; 21538749b427SRoopa Prabhu #endif 2154b67f231dSRoopa Prabhu int num_pps = 1; 2155a6a5580cSJeff Kirsher 2156a6a5580cSJeff Kirsher /* Allocate net device structure and initialize. Private 2157a6a5580cSJeff Kirsher * instance data is initialized to zero. 2158a6a5580cSJeff Kirsher */ 2159a6a5580cSJeff Kirsher 2160822473b6Sgovindarajulu.v netdev = alloc_etherdev_mqs(sizeof(struct enic), 2161822473b6Sgovindarajulu.v ENIC_RQ_MAX, ENIC_WQ_MAX); 216241de8d4cSJoe Perches if (!netdev) 2163a6a5580cSJeff Kirsher return -ENOMEM; 2164a6a5580cSJeff Kirsher 2165a6a5580cSJeff Kirsher pci_set_drvdata(pdev, netdev); 2166a6a5580cSJeff Kirsher 2167a6a5580cSJeff Kirsher SET_NETDEV_DEV(netdev, &pdev->dev); 2168a6a5580cSJeff Kirsher 2169a6a5580cSJeff Kirsher enic = netdev_priv(netdev); 2170a6a5580cSJeff Kirsher enic->netdev = netdev; 2171a6a5580cSJeff Kirsher enic->pdev = pdev; 2172a6a5580cSJeff Kirsher 2173a6a5580cSJeff Kirsher /* Setup PCI resources 2174a6a5580cSJeff Kirsher */ 2175a6a5580cSJeff Kirsher 2176a6a5580cSJeff Kirsher err = pci_enable_device_mem(pdev); 2177a6a5580cSJeff Kirsher if (err) { 2178a6a5580cSJeff Kirsher dev_err(dev, "Cannot enable PCI device, aborting\n"); 2179a6a5580cSJeff Kirsher goto err_out_free_netdev; 2180a6a5580cSJeff Kirsher } 2181a6a5580cSJeff Kirsher 2182a6a5580cSJeff Kirsher err = pci_request_regions(pdev, DRV_NAME); 2183a6a5580cSJeff Kirsher if (err) { 2184a6a5580cSJeff Kirsher dev_err(dev, "Cannot request PCI regions, aborting\n"); 2185a6a5580cSJeff Kirsher goto err_out_disable_device; 2186a6a5580cSJeff Kirsher } 2187a6a5580cSJeff Kirsher 2188a6a5580cSJeff Kirsher pci_set_master(pdev); 2189a6a5580cSJeff Kirsher 2190a6a5580cSJeff Kirsher /* Query PCI controller on system for DMA addressing 2191624dbf55Sgovindarajulu.v * limitation for the device. Try 64-bit first, and 2192a6a5580cSJeff Kirsher * fail to 32-bit. 2193a6a5580cSJeff Kirsher */ 2194a6a5580cSJeff Kirsher 2195624dbf55Sgovindarajulu.v err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 2196a6a5580cSJeff Kirsher if (err) { 2197a6a5580cSJeff Kirsher err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 2198a6a5580cSJeff Kirsher if (err) { 2199a6a5580cSJeff Kirsher dev_err(dev, "No usable DMA configuration, aborting\n"); 2200a6a5580cSJeff Kirsher goto err_out_release_regions; 2201a6a5580cSJeff Kirsher } 2202a6a5580cSJeff Kirsher err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 2203a6a5580cSJeff Kirsher if (err) { 2204a6a5580cSJeff Kirsher dev_err(dev, "Unable to obtain %u-bit DMA " 2205a6a5580cSJeff Kirsher "for consistent allocations, aborting\n", 32); 2206a6a5580cSJeff Kirsher goto err_out_release_regions; 2207a6a5580cSJeff Kirsher } 2208a6a5580cSJeff Kirsher } else { 2209624dbf55Sgovindarajulu.v err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 2210a6a5580cSJeff Kirsher if (err) { 2211a6a5580cSJeff Kirsher dev_err(dev, "Unable to obtain %u-bit DMA " 2212624dbf55Sgovindarajulu.v "for consistent allocations, aborting\n", 64); 2213a6a5580cSJeff Kirsher goto err_out_release_regions; 2214a6a5580cSJeff Kirsher } 2215a6a5580cSJeff Kirsher using_dac = 1; 2216a6a5580cSJeff Kirsher } 2217a6a5580cSJeff Kirsher 2218a6a5580cSJeff Kirsher /* Map vNIC resources from BAR0-5 2219a6a5580cSJeff Kirsher */ 2220a6a5580cSJeff Kirsher 2221a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { 2222a6a5580cSJeff Kirsher if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) 2223a6a5580cSJeff Kirsher continue; 2224a6a5580cSJeff Kirsher enic->bar[i].len = pci_resource_len(pdev, i); 2225a6a5580cSJeff Kirsher enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); 2226a6a5580cSJeff Kirsher if (!enic->bar[i].vaddr) { 2227a6a5580cSJeff Kirsher dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); 2228a6a5580cSJeff Kirsher err = -ENODEV; 2229a6a5580cSJeff Kirsher goto err_out_iounmap; 2230a6a5580cSJeff Kirsher } 2231a6a5580cSJeff Kirsher enic->bar[i].bus_addr = pci_resource_start(pdev, i); 2232a6a5580cSJeff Kirsher } 2233a6a5580cSJeff Kirsher 2234a6a5580cSJeff Kirsher /* Register vNIC device 2235a6a5580cSJeff Kirsher */ 2236a6a5580cSJeff Kirsher 2237a6a5580cSJeff Kirsher enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, 2238a6a5580cSJeff Kirsher ARRAY_SIZE(enic->bar)); 2239a6a5580cSJeff Kirsher if (!enic->vdev) { 2240a6a5580cSJeff Kirsher dev_err(dev, "vNIC registration failed, aborting\n"); 2241a6a5580cSJeff Kirsher err = -ENODEV; 2242a6a5580cSJeff Kirsher goto err_out_iounmap; 2243a6a5580cSJeff Kirsher } 2244a6a5580cSJeff Kirsher 22458749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 22468749b427SRoopa Prabhu /* Get number of subvnics */ 22478749b427SRoopa Prabhu pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 22488749b427SRoopa Prabhu if (pos) { 22498749b427SRoopa Prabhu pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, 2250413708bbSDan Carpenter &enic->num_vfs); 22518749b427SRoopa Prabhu if (enic->num_vfs) { 22528749b427SRoopa Prabhu err = pci_enable_sriov(pdev, enic->num_vfs); 22538749b427SRoopa Prabhu if (err) { 22548749b427SRoopa Prabhu dev_err(dev, "SRIOV enable failed, aborting." 22558749b427SRoopa Prabhu " pci_enable_sriov() returned %d\n", 22568749b427SRoopa Prabhu err); 22578749b427SRoopa Prabhu goto err_out_vnic_unregister; 22588749b427SRoopa Prabhu } 22598749b427SRoopa Prabhu enic->priv_flags |= ENIC_SRIOV_ENABLED; 2260b67f231dSRoopa Prabhu num_pps = enic->num_vfs; 22618749b427SRoopa Prabhu } 22628749b427SRoopa Prabhu } 22638749b427SRoopa Prabhu #endif 2264ca2b721dSRoopa Prabhu 22653f192795SRoopa Prabhu /* Allocate structure for port profiles */ 2266a1de2219SThomas Meyer enic->pp = kcalloc(num_pps, sizeof(*enic->pp), GFP_KERNEL); 22673f192795SRoopa Prabhu if (!enic->pp) { 22683f192795SRoopa Prabhu err = -ENOMEM; 2269ca2b721dSRoopa Prabhu goto err_out_disable_sriov_pp; 22703f192795SRoopa Prabhu } 22713f192795SRoopa Prabhu 2272a6a5580cSJeff Kirsher /* Issue device open to get device in known state 2273a6a5580cSJeff Kirsher */ 2274a6a5580cSJeff Kirsher 2275a6a5580cSJeff Kirsher err = enic_dev_open(enic); 2276a6a5580cSJeff Kirsher if (err) { 2277a6a5580cSJeff Kirsher dev_err(dev, "vNIC dev open failed, aborting\n"); 2278ca2b721dSRoopa Prabhu goto err_out_disable_sriov; 2279a6a5580cSJeff Kirsher } 2280a6a5580cSJeff Kirsher 2281a6a5580cSJeff Kirsher /* Setup devcmd lock 2282a6a5580cSJeff Kirsher */ 2283a6a5580cSJeff Kirsher 2284a6a5580cSJeff Kirsher spin_lock_init(&enic->devcmd_lock); 22850b038566SNeel Patel spin_lock_init(&enic->enic_api_lock); 2286a6a5580cSJeff Kirsher 2287a6a5580cSJeff Kirsher /* 2288a6a5580cSJeff Kirsher * Set ingress vlan rewrite mode before vnic initialization 2289a6a5580cSJeff Kirsher */ 2290a6a5580cSJeff Kirsher 2291a6a5580cSJeff Kirsher err = enic_dev_set_ig_vlan_rewrite_mode(enic); 2292a6a5580cSJeff Kirsher if (err) { 2293a6a5580cSJeff Kirsher dev_err(dev, 2294a6a5580cSJeff Kirsher "Failed to set ingress vlan rewrite mode, aborting.\n"); 2295a6a5580cSJeff Kirsher goto err_out_dev_close; 2296a6a5580cSJeff Kirsher } 2297a6a5580cSJeff Kirsher 2298a6a5580cSJeff Kirsher /* Issue device init to initialize the vnic-to-switch link. 2299a6a5580cSJeff Kirsher * We'll start with carrier off and wait for link UP 2300a6a5580cSJeff Kirsher * notification later to turn on carrier. We don't need 2301a6a5580cSJeff Kirsher * to wait here for the vnic-to-switch link initialization 2302a6a5580cSJeff Kirsher * to complete; link UP notification is the indication that 2303a6a5580cSJeff Kirsher * the process is complete. 2304a6a5580cSJeff Kirsher */ 2305a6a5580cSJeff Kirsher 2306a6a5580cSJeff Kirsher netif_carrier_off(netdev); 2307a6a5580cSJeff Kirsher 2308a6a5580cSJeff Kirsher /* Do not call dev_init for a dynamic vnic. 2309a6a5580cSJeff Kirsher * For a dynamic vnic, init_prov_info will be 2310a6a5580cSJeff Kirsher * called later by an upper layer. 2311a6a5580cSJeff Kirsher */ 2312a6a5580cSJeff Kirsher 23132b68c181SRoopa Prabhu if (!enic_is_dynamic(enic)) { 2314a6a5580cSJeff Kirsher err = vnic_dev_init(enic->vdev, 0); 2315a6a5580cSJeff Kirsher if (err) { 2316a6a5580cSJeff Kirsher dev_err(dev, "vNIC dev init failed, aborting\n"); 2317a6a5580cSJeff Kirsher goto err_out_dev_close; 2318a6a5580cSJeff Kirsher } 2319a6a5580cSJeff Kirsher } 2320a6a5580cSJeff Kirsher 2321a6a5580cSJeff Kirsher err = enic_dev_init(enic); 2322a6a5580cSJeff Kirsher if (err) { 2323a6a5580cSJeff Kirsher dev_err(dev, "Device initialization failed, aborting\n"); 2324a6a5580cSJeff Kirsher goto err_out_dev_close; 2325a6a5580cSJeff Kirsher } 2326a6a5580cSJeff Kirsher 2327822473b6Sgovindarajulu.v netif_set_real_num_tx_queues(netdev, enic->wq_count); 2328bf751ba8Sgovindarajulu.v netif_set_real_num_rx_queues(netdev, enic->rq_count); 2329822473b6Sgovindarajulu.v 2330a6a5580cSJeff Kirsher /* Setup notification timer, HW reset task, and wq locks 2331a6a5580cSJeff Kirsher */ 2332a6a5580cSJeff Kirsher 2333a6a5580cSJeff Kirsher init_timer(&enic->notify_timer); 2334a6a5580cSJeff Kirsher enic->notify_timer.function = enic_notify_timer; 2335a6a5580cSJeff Kirsher enic->notify_timer.data = (unsigned long)enic; 2336a6a5580cSJeff Kirsher 23377c2ce6e6SSujith Sankar enic_set_rx_coal_setting(enic); 2338a6a5580cSJeff Kirsher INIT_WORK(&enic->reset, enic_reset); 2339a6a5580cSJeff Kirsher INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); 2340a6a5580cSJeff Kirsher 2341a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 2342a6a5580cSJeff Kirsher spin_lock_init(&enic->wq_lock[i]); 2343a6a5580cSJeff Kirsher 2344a6a5580cSJeff Kirsher /* Register net device 2345a6a5580cSJeff Kirsher */ 2346a6a5580cSJeff Kirsher 2347a6a5580cSJeff Kirsher enic->port_mtu = enic->config.mtu; 2348a6a5580cSJeff Kirsher (void)enic_change_mtu(netdev, enic->port_mtu); 2349a6a5580cSJeff Kirsher 2350a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, enic->mac_addr); 2351a6a5580cSJeff Kirsher if (err) { 2352a6a5580cSJeff Kirsher dev_err(dev, "Invalid MAC address, aborting\n"); 2353a6a5580cSJeff Kirsher goto err_out_dev_deinit; 2354a6a5580cSJeff Kirsher } 2355a6a5580cSJeff Kirsher 2356a6a5580cSJeff Kirsher enic->tx_coalesce_usecs = enic->config.intr_timer_usec; 23577c2ce6e6SSujith Sankar /* rx coalesce time already got initialized. This gets used 23587c2ce6e6SSujith Sankar * if adaptive coal is turned off 23597c2ce6e6SSujith Sankar */ 2360a6a5580cSJeff Kirsher enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; 2361a6a5580cSJeff Kirsher 23627335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) 2363a6a5580cSJeff Kirsher netdev->netdev_ops = &enic_netdev_dynamic_ops; 2364a6a5580cSJeff Kirsher else 2365a6a5580cSJeff Kirsher netdev->netdev_ops = &enic_netdev_ops; 2366a6a5580cSJeff Kirsher 2367a6a5580cSJeff Kirsher netdev->watchdog_timeo = 2 * HZ; 2368f13bbc2fSNeel Patel enic_set_ethtool_ops(netdev); 2369a6a5580cSJeff Kirsher 2370f646968fSPatrick McHardy netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2371a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, LOOP)) { 2372f646968fSPatrick McHardy netdev->features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2373a6a5580cSJeff Kirsher enic->loop_enable = 1; 2374a6a5580cSJeff Kirsher enic->loop_tag = enic->config.loop_tag; 2375a6a5580cSJeff Kirsher dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); 2376a6a5580cSJeff Kirsher } 2377a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, TXCSUM)) 2378a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; 2379a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, TSO)) 2380a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_TSO | 2381a6a5580cSJeff Kirsher NETIF_F_TSO6 | NETIF_F_TSO_ECN; 2382bf751ba8Sgovindarajulu.v if (ENIC_SETTING(enic, RSS)) 2383bf751ba8Sgovindarajulu.v netdev->hw_features |= NETIF_F_RXHASH; 2384a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, RXCSUM)) 2385a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_RXCSUM; 2386a6a5580cSJeff Kirsher 2387a6a5580cSJeff Kirsher netdev->features |= netdev->hw_features; 2388a6a5580cSJeff Kirsher 2389a6a5580cSJeff Kirsher if (using_dac) 2390a6a5580cSJeff Kirsher netdev->features |= NETIF_F_HIGHDMA; 2391a6a5580cSJeff Kirsher 239201789349SJiri Pirko netdev->priv_flags |= IFF_UNICAST_FLT; 239301789349SJiri Pirko 2394a6a5580cSJeff Kirsher err = register_netdev(netdev); 2395a6a5580cSJeff Kirsher if (err) { 2396a6a5580cSJeff Kirsher dev_err(dev, "Cannot register net device, aborting\n"); 2397a6a5580cSJeff Kirsher goto err_out_dev_deinit; 2398a6a5580cSJeff Kirsher } 2399a6a5580cSJeff Kirsher 2400a6a5580cSJeff Kirsher return 0; 2401a6a5580cSJeff Kirsher 2402a6a5580cSJeff Kirsher err_out_dev_deinit: 2403a6a5580cSJeff Kirsher enic_dev_deinit(enic); 2404a6a5580cSJeff Kirsher err_out_dev_close: 2405a6a5580cSJeff Kirsher vnic_dev_close(enic->vdev); 24068749b427SRoopa Prabhu err_out_disable_sriov: 2407ca2b721dSRoopa Prabhu kfree(enic->pp); 2408ca2b721dSRoopa Prabhu err_out_disable_sriov_pp: 24098749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 24108749b427SRoopa Prabhu if (enic_sriov_enabled(enic)) { 24118749b427SRoopa Prabhu pci_disable_sriov(pdev); 24128749b427SRoopa Prabhu enic->priv_flags &= ~ENIC_SRIOV_ENABLED; 24138749b427SRoopa Prabhu } 2414a6a5580cSJeff Kirsher err_out_vnic_unregister: 24158749b427SRoopa Prabhu #endif 241635d87e33SRoopa Prabhu vnic_dev_unregister(enic->vdev); 2417a6a5580cSJeff Kirsher err_out_iounmap: 2418a6a5580cSJeff Kirsher enic_iounmap(enic); 2419a6a5580cSJeff Kirsher err_out_release_regions: 2420a6a5580cSJeff Kirsher pci_release_regions(pdev); 2421a6a5580cSJeff Kirsher err_out_disable_device: 2422a6a5580cSJeff Kirsher pci_disable_device(pdev); 2423a6a5580cSJeff Kirsher err_out_free_netdev: 2424a6a5580cSJeff Kirsher free_netdev(netdev); 2425a6a5580cSJeff Kirsher 2426a6a5580cSJeff Kirsher return err; 2427a6a5580cSJeff Kirsher } 2428a6a5580cSJeff Kirsher 2429854de92fSBill Pemberton static void enic_remove(struct pci_dev *pdev) 2430a6a5580cSJeff Kirsher { 2431a6a5580cSJeff Kirsher struct net_device *netdev = pci_get_drvdata(pdev); 2432a6a5580cSJeff Kirsher 2433a6a5580cSJeff Kirsher if (netdev) { 2434a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 2435a6a5580cSJeff Kirsher 2436a6a5580cSJeff Kirsher cancel_work_sync(&enic->reset); 2437a6a5580cSJeff Kirsher cancel_work_sync(&enic->change_mtu_work); 2438a6a5580cSJeff Kirsher unregister_netdev(netdev); 2439a6a5580cSJeff Kirsher enic_dev_deinit(enic); 2440a6a5580cSJeff Kirsher vnic_dev_close(enic->vdev); 24418749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 24428749b427SRoopa Prabhu if (enic_sriov_enabled(enic)) { 24438749b427SRoopa Prabhu pci_disable_sriov(pdev); 24448749b427SRoopa Prabhu enic->priv_flags &= ~ENIC_SRIOV_ENABLED; 24458749b427SRoopa Prabhu } 24468749b427SRoopa Prabhu #endif 24473f192795SRoopa Prabhu kfree(enic->pp); 2448a6a5580cSJeff Kirsher vnic_dev_unregister(enic->vdev); 2449a6a5580cSJeff Kirsher enic_iounmap(enic); 2450a6a5580cSJeff Kirsher pci_release_regions(pdev); 2451a6a5580cSJeff Kirsher pci_disable_device(pdev); 2452a6a5580cSJeff Kirsher free_netdev(netdev); 2453a6a5580cSJeff Kirsher } 2454a6a5580cSJeff Kirsher } 2455a6a5580cSJeff Kirsher 2456a6a5580cSJeff Kirsher static struct pci_driver enic_driver = { 2457a6a5580cSJeff Kirsher .name = DRV_NAME, 2458a6a5580cSJeff Kirsher .id_table = enic_id_table, 2459a6a5580cSJeff Kirsher .probe = enic_probe, 2460854de92fSBill Pemberton .remove = enic_remove, 2461a6a5580cSJeff Kirsher }; 2462a6a5580cSJeff Kirsher 2463a6a5580cSJeff Kirsher static int __init enic_init_module(void) 2464a6a5580cSJeff Kirsher { 2465a6a5580cSJeff Kirsher pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 2466a6a5580cSJeff Kirsher 2467a6a5580cSJeff Kirsher return pci_register_driver(&enic_driver); 2468a6a5580cSJeff Kirsher } 2469a6a5580cSJeff Kirsher 2470a6a5580cSJeff Kirsher static void __exit enic_cleanup_module(void) 2471a6a5580cSJeff Kirsher { 2472a6a5580cSJeff Kirsher pci_unregister_driver(&enic_driver); 2473a6a5580cSJeff Kirsher } 2474a6a5580cSJeff Kirsher 2475a6a5580cSJeff Kirsher module_init(enic_init_module); 2476a6a5580cSJeff Kirsher module_exit(enic_cleanup_module); 2477