From: Somnath Kotur Date: Thu, 30 Jul 2015 15:33:31 +0000 (+0300) Subject: RDMA/ocrdma: Incorporate the moving of GID Table mgmt to IB/Core X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cc36929e736a30a291ab543b633046eb57d67e68;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git RDMA/ocrdma: Incorporate the moving of GID Table mgmt to IB/Core 1.Change query_gid hook to return value from IB/Core GID management APIs. 2.Get rid of all the netdev notifier chain subscription code as well as maintenance of SGID Table in memory. 3.Implement get_netdev hook in driver. Signed-off-by: Somnath Kotur Signed-off-by: Devesh Sharma Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h index 6a36338593cd..b4091ab48db0 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma.h @@ -246,7 +246,6 @@ struct ocrdma_dev { u16 base_eqid; u16 max_eq; - union ib_gid *sgid_tbl; /* provided synchronization to sgid table for * updating gid entries triggered by notifier. */ diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c index 81ed8a342f4d..87aa55df7c82 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c @@ -67,8 +67,6 @@ static LIST_HEAD(ocrdma_dev_list); static DEFINE_SPINLOCK(ocrdma_devlist_lock); static DEFINE_IDR(ocrdma_dev_id); -static union ib_gid ocrdma_zero_sgid; - void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid) { u8 mac_addr[6]; @@ -83,135 +81,6 @@ void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid) guid[6] = mac_addr[4]; guid[7] = mac_addr[5]; } - -static bool ocrdma_add_sgid(struct ocrdma_dev *dev, union ib_gid *new_sgid) -{ - int i; - unsigned long flags; - - memset(&ocrdma_zero_sgid, 0, sizeof(union ib_gid)); - - - spin_lock_irqsave(&dev->sgid_lock, flags); - for (i = 0; i < OCRDMA_MAX_SGID; i++) { - if (!memcmp(&dev->sgid_tbl[i], &ocrdma_zero_sgid, - sizeof(union ib_gid))) { - /* found free entry */ - memcpy(&dev->sgid_tbl[i], new_sgid, - sizeof(union ib_gid)); - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return true; - } else if (!memcmp(&dev->sgid_tbl[i], new_sgid, - sizeof(union ib_gid))) { - /* entry already present, no addition is required. */ - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return false; - } - } - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return false; -} - -static bool ocrdma_del_sgid(struct ocrdma_dev *dev, union ib_gid *sgid) -{ - int found = false; - int i; - unsigned long flags; - - - spin_lock_irqsave(&dev->sgid_lock, flags); - /* first is default sgid, which cannot be deleted. */ - for (i = 1; i < OCRDMA_MAX_SGID; i++) { - if (!memcmp(&dev->sgid_tbl[i], sgid, sizeof(union ib_gid))) { - /* found matching entry */ - memset(&dev->sgid_tbl[i], 0, sizeof(union ib_gid)); - found = true; - break; - } - } - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return found; -} - -static int ocrdma_addr_event(unsigned long event, struct net_device *netdev, - union ib_gid *gid) -{ - struct ib_event gid_event; - struct ocrdma_dev *dev; - bool found = false; - bool updated = false; - bool is_vlan = false; - - is_vlan = netdev->priv_flags & IFF_802_1Q_VLAN; - if (is_vlan) - netdev = rdma_vlan_dev_real_dev(netdev); - - rcu_read_lock(); - list_for_each_entry_rcu(dev, &ocrdma_dev_list, entry) { - if (dev->nic_info.netdev == netdev) { - found = true; - break; - } - } - rcu_read_unlock(); - - if (!found) - return NOTIFY_DONE; - - mutex_lock(&dev->dev_lock); - switch (event) { - case NETDEV_UP: - updated = ocrdma_add_sgid(dev, gid); - break; - case NETDEV_DOWN: - updated = ocrdma_del_sgid(dev, gid); - break; - default: - break; - } - if (updated) { - /* GID table updated, notify the consumers about it */ - gid_event.device = &dev->ibdev; - gid_event.element.port_num = 1; - gid_event.event = IB_EVENT_GID_CHANGE; - ib_dispatch_event(&gid_event); - } - mutex_unlock(&dev->dev_lock); - return NOTIFY_OK; -} - -static int ocrdma_inetaddr_event(struct notifier_block *notifier, - unsigned long event, void *ptr) -{ - struct in_ifaddr *ifa = ptr; - union ib_gid gid; - struct net_device *netdev = ifa->ifa_dev->dev; - - ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); - return ocrdma_addr_event(event, netdev, &gid); -} - -static struct notifier_block ocrdma_inetaddr_notifier = { - .notifier_call = ocrdma_inetaddr_event -}; - -#if IS_ENABLED(CONFIG_IPV6) - -static int ocrdma_inet6addr_event(struct notifier_block *notifier, - unsigned long event, void *ptr) -{ - struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; - union ib_gid *gid = (union ib_gid *)&ifa->addr; - struct net_device *netdev = ifa->idev->dev; - return ocrdma_addr_event(event, netdev, gid); -} - -static struct notifier_block ocrdma_inet6addr_notifier = { - .notifier_call = ocrdma_inet6addr_event -}; - -#endif /* IPV6 and VLAN */ - static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device, u8 port_num) { @@ -280,6 +149,9 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) dev->ibdev.query_port = ocrdma_query_port; dev->ibdev.modify_port = ocrdma_modify_port; dev->ibdev.query_gid = ocrdma_query_gid; + dev->ibdev.get_netdev = ocrdma_get_netdev; + dev->ibdev.add_gid = ocrdma_add_gid; + dev->ibdev.del_gid = ocrdma_del_gid; dev->ibdev.get_link_layer = ocrdma_link_layer; dev->ibdev.alloc_pd = ocrdma_alloc_pd; dev->ibdev.dealloc_pd = ocrdma_dealloc_pd; @@ -342,12 +214,6 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) static int ocrdma_alloc_resources(struct ocrdma_dev *dev) { mutex_init(&dev->dev_lock); - dev->sgid_tbl = kzalloc(sizeof(union ib_gid) * - OCRDMA_MAX_SGID, GFP_KERNEL); - if (!dev->sgid_tbl) - goto alloc_err; - spin_lock_init(&dev->sgid_lock); - dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) * OCRDMA_MAX_CQ, GFP_KERNEL); if (!dev->cq_tbl) @@ -379,7 +245,6 @@ static void ocrdma_free_resources(struct ocrdma_dev *dev) kfree(dev->stag_arr); kfree(dev->qp_tbl); kfree(dev->cq_tbl); - kfree(dev->sgid_tbl); } /* OCRDMA sysfs interface */ @@ -425,68 +290,6 @@ static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev) device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]); } -static void ocrdma_add_default_sgid(struct ocrdma_dev *dev) -{ - /* GID Index 0 - Invariant manufacturer-assigned EUI-64 */ - union ib_gid *sgid = &dev->sgid_tbl[0]; - - sgid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); - ocrdma_get_guid(dev, &sgid->raw[8]); -} - -static void ocrdma_init_ipv4_gids(struct ocrdma_dev *dev, - struct net_device *net) -{ - struct in_device *in_dev; - union ib_gid gid; - in_dev = in_dev_get(net); - if (in_dev) { - for_ifa(in_dev) { - ipv6_addr_set_v4mapped(ifa->ifa_address, - (struct in6_addr *)&gid); - ocrdma_add_sgid(dev, &gid); - } - endfor_ifa(in_dev); - in_dev_put(in_dev); - } -} - -static void ocrdma_init_ipv6_gids(struct ocrdma_dev *dev, - struct net_device *net) -{ -#if IS_ENABLED(CONFIG_IPV6) - struct inet6_dev *in6_dev; - union ib_gid *pgid; - struct inet6_ifaddr *ifp; - in6_dev = in6_dev_get(net); - if (in6_dev) { - read_lock_bh(&in6_dev->lock); - list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { - pgid = (union ib_gid *)&ifp->addr; - ocrdma_add_sgid(dev, pgid); - } - read_unlock_bh(&in6_dev->lock); - in6_dev_put(in6_dev); - } -#endif -} - -static void ocrdma_init_gid_table(struct ocrdma_dev *dev) -{ - struct net_device *net_dev; - - for_each_netdev(&init_net, net_dev) { - struct net_device *real_dev = rdma_vlan_dev_real_dev(net_dev) ? - rdma_vlan_dev_real_dev(net_dev) : net_dev; - - if (real_dev == dev->nic_info.netdev) { - ocrdma_add_default_sgid(dev); - ocrdma_init_ipv4_gids(dev, net_dev); - ocrdma_init_ipv6_gids(dev, net_dev); - } - } -} - static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info) { int status = 0, i; @@ -515,7 +318,6 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info) goto alloc_err; ocrdma_init_service_level(dev); - ocrdma_init_gid_table(dev); status = ocrdma_register_device(dev); if (status) goto alloc_err; @@ -662,34 +464,12 @@ static struct ocrdma_driver ocrdma_drv = { .be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION, }; -static void ocrdma_unregister_inet6addr_notifier(void) -{ -#if IS_ENABLED(CONFIG_IPV6) - unregister_inet6addr_notifier(&ocrdma_inet6addr_notifier); -#endif -} - -static void ocrdma_unregister_inetaddr_notifier(void) -{ - unregister_inetaddr_notifier(&ocrdma_inetaddr_notifier); -} - static int __init ocrdma_init_module(void) { int status; ocrdma_init_debugfs(); - status = register_inetaddr_notifier(&ocrdma_inetaddr_notifier); - if (status) - return status; - -#if IS_ENABLED(CONFIG_IPV6) - status = register_inet6addr_notifier(&ocrdma_inet6addr_notifier); - if (status) - goto err_notifier6; -#endif - status = be_roce_register_driver(&ocrdma_drv); if (status) goto err_be_reg; @@ -697,19 +477,13 @@ static int __init ocrdma_init_module(void) return 0; err_be_reg: -#if IS_ENABLED(CONFIG_IPV6) - ocrdma_unregister_inet6addr_notifier(); -err_notifier6: -#endif - ocrdma_unregister_inetaddr_notifier(); + return status; } static void __exit ocrdma_exit_module(void) { be_roce_unregister_driver(&ocrdma_drv); - ocrdma_unregister_inet6addr_notifier(); - ocrdma_unregister_inetaddr_notifier(); ocrdma_rem_debugfs(); idr_destroy(&ocrdma_dev_id); } diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h index 80006b24aa11..6a38268bbe9f 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h @@ -140,6 +140,8 @@ enum { OCRDMA_DB_RQ_SHIFT = 24 }; +#define OCRDMA_ROUDP_FLAGS_SHIFT 0x03 + #define OCRDMA_DB_CQ_RING_ID_MASK 0x3FF /* bits 0 - 9 */ #define OCRDMA_DB_CQ_RING_ID_EXT_MASK 0x0C00 /* bits 10-11 of qid at 12-11 */ /* qid #2 msbits at 12-11 */ diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 8e5fb44090f7..1f3affb6a477 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -46,6 +46,7 @@ #include #include #include +#include #include "ocrdma.h" #include "ocrdma_hw.h" @@ -64,6 +65,7 @@ int ocrdma_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) int ocrdma_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *sgid) { + int ret; struct ocrdma_dev *dev; dev = get_ocrdma_dev(ibdev); @@ -71,8 +73,28 @@ int ocrdma_query_gid(struct ib_device *ibdev, u8 port, if (index >= OCRDMA_MAX_SGID) return -EINVAL; - memcpy(sgid, &dev->sgid_tbl[index], sizeof(*sgid)); + ret = ib_get_cached_gid(ibdev, port, index, sgid); + if (ret == -EAGAIN) { + memcpy(sgid, &zgid, sizeof(*sgid)); + return 0; + } + + return ret; +} +int ocrdma_add_gid(struct ib_device *device, + u8 port_num, + unsigned int index, + const union ib_gid *gid, + const struct ib_gid_attr *attr, + void **context) { + return 0; +} + +int ocrdma_del_gid(struct ib_device *device, + u8 port_num, + unsigned int index, + void **context) { return 0; } @@ -125,6 +147,24 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, return 0; } +struct net_device *ocrdma_get_netdev(struct ib_device *ibdev, u8 port_num) +{ + struct ocrdma_dev *dev; + struct net_device *ndev = NULL; + + rcu_read_lock(); + + dev = get_ocrdma_dev(ibdev); + if (dev) + ndev = dev->nic_info.netdev; + if (ndev) + dev_hold(ndev); + + rcu_read_unlock(); + + return ndev; +} + static inline void get_link_speed_and_width(struct ocrdma_dev *dev, u8 *ib_speed, u8 *ib_width) { @@ -194,7 +234,8 @@ int ocrdma_query_port(struct ib_device *ibdev, props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | - IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_IP_BASED_GIDS; + IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | + IB_PORT_IP_BASED_GIDS; props->gid_tbl_len = OCRDMA_MAX_SGID; props->pkey_tbl_len = 1; props->bad_pkey_cntr = 0; diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h index 68e026bb14d0..308c16857a5d 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h @@ -63,6 +63,17 @@ ocrdma_query_protocol(struct ib_device *device, u8 port_num); void ocrdma_get_guid(struct ocrdma_dev *, u8 *guid); int ocrdma_query_gid(struct ib_device *, u8 port, int index, union ib_gid *gid); +struct net_device *ocrdma_get_netdev(struct ib_device *device, u8 port_num); +int ocrdma_add_gid(struct ib_device *device, + u8 port_num, + unsigned int index, + const union ib_gid *gid, + const struct ib_gid_attr *attr, + void **context); +int ocrdma_del_gid(struct ib_device *device, + u8 port_num, + unsigned int index, + void **context); int ocrdma_query_pkey(struct ib_device *, u8 port, u16 index, u16 *pkey); struct ib_ucontext *ocrdma_alloc_ucontext(struct ib_device *,