From: Yishai Hadas Date: Thu, 13 Aug 2015 15:32:04 +0000 (+0300) Subject: IB/uverbs: Explicitly pass ib_dev to uverbs commands X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=057aec0d23f750b27f0bb92d2606871f60417e0a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git IB/uverbs: Explicitly pass ib_dev to uverbs commands Done in preparation for deploying RCU for the device removal flow. Allows isolating the RCU handling to the uverb_main layer and keeping the uverbs_cmd code as is. Signed-off-by: Yishai Hadas Signed-off-by: Shachar Raindel Reviewed-by: Jason Gunthorpe Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index 92ec765a45be..ea52db196211 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -178,6 +178,7 @@ extern struct idr ib_uverbs_rule_idr; void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj); struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, + struct ib_device *ib_dev, int is_async); void ib_uverbs_free_async_event_file(struct ib_uverbs_file *uverbs_file); struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd); @@ -214,6 +215,7 @@ struct ib_uverbs_flow_spec { #define IB_UVERBS_DECLARE_CMD(name) \ ssize_t ib_uverbs_##name(struct ib_uverbs_file *file, \ + struct ib_device *ib_dev, \ const char __user *buf, int in_len, \ int out_len) @@ -255,6 +257,7 @@ IB_UVERBS_DECLARE_CMD(close_xrcd); #define IB_UVERBS_DECLARE_EX_CMD(name) \ int ib_uverbs_ex_##name(struct ib_uverbs_file *file, \ + struct ib_device *ib_dev, \ struct ib_udata *ucore, \ struct ib_udata *uhw) diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index ae2d5972e202..a15318a54b31 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -282,13 +282,13 @@ static void put_xrcd_read(struct ib_uobject *uobj) } ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_get_context cmd; struct ib_uverbs_get_context_resp resp; struct ib_udata udata; - struct ib_device *ibdev = file->device->ib_dev; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING struct ib_device_attr dev_attr; #endif @@ -313,13 +313,13 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, (unsigned long) cmd.response + sizeof resp, in_len - sizeof cmd, out_len - sizeof resp); - ucontext = ibdev->alloc_ucontext(ibdev, &udata); + ucontext = ib_dev->alloc_ucontext(ib_dev, &udata); if (IS_ERR(ucontext)) { ret = PTR_ERR(ucontext); goto err; } - ucontext->device = ibdev; + ucontext->device = ib_dev; INIT_LIST_HEAD(&ucontext->pd_list); INIT_LIST_HEAD(&ucontext->mr_list); INIT_LIST_HEAD(&ucontext->mw_list); @@ -340,7 +340,7 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, ucontext->odp_mrs_count = 0; INIT_LIST_HEAD(&ucontext->no_private_counters); - ret = ib_query_device(ibdev, &dev_attr); + ret = ib_query_device(ib_dev, &dev_attr); if (ret) goto err_free; if (!(dev_attr.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) @@ -355,7 +355,7 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, goto err_free; resp.async_fd = ret; - filp = ib_uverbs_alloc_event_file(file, 1); + filp = ib_uverbs_alloc_event_file(file, ib_dev, 1); if (IS_ERR(filp)) { ret = PTR_ERR(filp); goto err_fd; @@ -384,7 +384,7 @@ err_fd: err_free: put_pid(ucontext->tgid); - ibdev->dealloc_ucontext(ucontext); + ib_dev->dealloc_ucontext(ucontext); err: mutex_unlock(&file->mutex); @@ -392,11 +392,12 @@ err: } static void copy_query_dev_fields(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_uverbs_query_device_resp *resp, struct ib_device_attr *attr) { resp->fw_ver = attr->fw_ver; - resp->node_guid = file->device->ib_dev->node_guid; + resp->node_guid = ib_dev->node_guid; resp->sys_image_guid = attr->sys_image_guid; resp->max_mr_size = attr->max_mr_size; resp->page_size_cap = attr->page_size_cap; @@ -434,10 +435,11 @@ static void copy_query_dev_fields(struct ib_uverbs_file *file, resp->max_srq_sge = attr->max_srq_sge; resp->max_pkeys = attr->max_pkeys; resp->local_ca_ack_delay = attr->local_ca_ack_delay; - resp->phys_port_cnt = file->device->ib_dev->phys_port_cnt; + resp->phys_port_cnt = ib_dev->phys_port_cnt; } ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -452,12 +454,12 @@ ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; - ret = ib_query_device(file->device->ib_dev, &attr); + ret = ib_query_device(ib_dev, &attr); if (ret) return ret; memset(&resp, 0, sizeof resp); - copy_query_dev_fields(file, &resp, &attr); + copy_query_dev_fields(file, ib_dev, &resp, &attr); if (copy_to_user((void __user *) (unsigned long) cmd.response, &resp, sizeof resp)) @@ -467,6 +469,7 @@ ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, } ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -481,7 +484,7 @@ ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; - ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); + ret = ib_query_port(ib_dev, cmd.port_num, &attr); if (ret) return ret; @@ -506,7 +509,7 @@ ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, resp.active_width = attr.active_width; resp.active_speed = attr.active_speed; resp.phys_state = attr.phys_state; - resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, + resp.link_layer = rdma_port_get_link_layer(ib_dev, cmd.port_num); if (copy_to_user((void __user *) (unsigned long) cmd.response, @@ -517,6 +520,7 @@ ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, } ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -544,14 +548,13 @@ ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, init_uobj(uobj, 0, file->ucontext, &pd_lock_class); down_write(&uobj->mutex); - pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, - file->ucontext, &udata); + pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata); if (IS_ERR(pd)) { ret = PTR_ERR(pd); goto err; } - pd->device = file->device->ib_dev; + pd->device = ib_dev; pd->uobject = uobj; pd->local_mr = NULL; atomic_set(&pd->usecnt, 0); @@ -592,6 +595,7 @@ err: } ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -722,6 +726,7 @@ static void xrcd_table_delete(struct ib_uverbs_device *dev, } ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -780,15 +785,14 @@ ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, down_write(&obj->uobject.mutex); if (!xrcd) { - xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev, - file->ucontext, &udata); + xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata); if (IS_ERR(xrcd)) { ret = PTR_ERR(xrcd); goto err; } xrcd->inode = inode; - xrcd->device = file->device->ib_dev; + xrcd->device = ib_dev; atomic_set(&xrcd->usecnt, 0); mutex_init(&xrcd->tgt_qp_mutex); INIT_LIST_HEAD(&xrcd->tgt_qp_list); @@ -859,6 +863,7 @@ err_tree_mutex_unlock: } ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -936,6 +941,7 @@ void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, } ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1045,6 +1051,7 @@ err_free: } ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1138,6 +1145,7 @@ put_uobjs: } ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1176,8 +1184,9 @@ ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, } ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, - const char __user *buf, int in_len, - int out_len) + struct ib_device *ib_dev, + const char __user *buf, int in_len, + int out_len) { struct ib_uverbs_alloc_mw cmd; struct ib_uverbs_alloc_mw_resp resp; @@ -1258,8 +1267,9 @@ err_free: } ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, - const char __user *buf, int in_len, - int out_len) + struct ib_device *ib_dev, + const char __user *buf, int in_len, + int out_len) { struct ib_uverbs_dealloc_mw cmd; struct ib_mw *mw; @@ -1296,6 +1306,7 @@ ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, } ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1315,7 +1326,7 @@ ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, return ret; resp.fd = ret; - filp = ib_uverbs_alloc_event_file(file, 0); + filp = ib_uverbs_alloc_event_file(file, ib_dev, 0); if (IS_ERR(filp)) { put_unused_fd(resp.fd); return PTR_ERR(filp); @@ -1333,6 +1344,7 @@ ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, } static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_udata *ucore, struct ib_udata *uhw, struct ib_uverbs_ex_create_cq *cmd, @@ -1381,14 +1393,14 @@ static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) attr.flags = cmd->flags; - cq = file->device->ib_dev->create_cq(file->device->ib_dev, &attr, + cq = ib_dev->create_cq(ib_dev, &attr, file->ucontext, uhw); if (IS_ERR(cq)) { ret = PTR_ERR(cq); goto err_file; } - cq->device = file->device->ib_dev; + cq->device = ib_dev; cq->uobject = &obj->uobject; cq->comp_handler = ib_uverbs_comp_handler; cq->event_handler = ib_uverbs_cq_event_handler; @@ -1449,6 +1461,7 @@ static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, } ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1477,7 +1490,7 @@ ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, cmd_ex.comp_vector = cmd.comp_vector; cmd_ex.comp_channel = cmd.comp_channel; - obj = create_cq(file, &ucore, &uhw, &cmd_ex, + obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex, offsetof(typeof(cmd_ex), comp_channel) + sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, NULL); @@ -1500,6 +1513,7 @@ static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, } int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_udata *ucore, struct ib_udata *uhw) { @@ -1525,7 +1539,7 @@ int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, sizeof(resp.response_length))) return -ENOSPC; - obj = create_cq(file, ucore, uhw, &cmd, + obj = create_cq(file, ib_dev, ucore, uhw, &cmd, min(ucore->inlen, sizeof(cmd)), ib_uverbs_ex_create_cq_cb, NULL); @@ -1536,6 +1550,7 @@ int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1599,6 +1614,7 @@ static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) } ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1650,6 +1666,7 @@ out_put: } ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1672,6 +1689,7 @@ ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1724,6 +1742,7 @@ ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -1919,6 +1938,7 @@ err_put: } ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_open_qp cmd; @@ -2013,6 +2033,7 @@ err_put: } ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2127,6 +2148,7 @@ static int modify_qp_mask(enum ib_qp_type qp_type, int mask) } ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2223,6 +2245,7 @@ out: } ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2281,6 +2304,7 @@ ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, } ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2525,6 +2549,7 @@ err: } ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2574,6 +2599,7 @@ out: } ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2623,6 +2649,7 @@ out: } ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2715,6 +2742,7 @@ err: } ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_destroy_ah cmd; @@ -2751,6 +2779,7 @@ ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, } ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2798,6 +2827,7 @@ out_put: } ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -2878,6 +2908,7 @@ static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, } int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_udata *ucore, struct ib_udata *uhw) { @@ -3038,6 +3069,7 @@ err_free_attr: } int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_udata *ucore, struct ib_udata *uhw) { @@ -3080,6 +3112,7 @@ int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, } static int __uverbs_create_xsrq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_uverbs_create_xsrq *cmd, struct ib_udata *udata) { @@ -3213,6 +3246,7 @@ err: } ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -3240,7 +3274,7 @@ ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, (unsigned long) cmd.response + sizeof resp, in_len - sizeof cmd, out_len - sizeof resp); - ret = __uverbs_create_xsrq(file, &xcmd, &udata); + ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata); if (ret) return ret; @@ -3248,6 +3282,7 @@ ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_create_xsrq cmd; @@ -3265,7 +3300,7 @@ ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, (unsigned long) cmd.response + sizeof resp, in_len - sizeof cmd, out_len - sizeof resp); - ret = __uverbs_create_xsrq(file, &cmd, &udata); + ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata); if (ret) return ret; @@ -3273,6 +3308,7 @@ ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -3303,6 +3339,7 @@ ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -3343,6 +3380,7 @@ ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, } ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) { @@ -3400,16 +3438,15 @@ ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, } int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_query_device_resp resp; struct ib_uverbs_ex_query_device cmd; struct ib_device_attr attr; - struct ib_device *device; int err; - device = file->device->ib_dev; if (ucore->inlen < sizeof(cmd)) return -EINVAL; @@ -3430,11 +3467,11 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, memset(&attr, 0, sizeof(attr)); - err = device->query_device(device, &attr, uhw); + err = ib_dev->query_device(ib_dev, &attr, uhw); if (err) return err; - copy_query_dev_fields(file, &resp.base, &attr); + copy_query_dev_fields(file, ib_dev, &resp.base, &attr); resp.comp_mask = 0; if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index e05bbb213d2c..082d9c75bf89 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -79,6 +79,7 @@ static DEFINE_SPINLOCK(map_lock); static DECLARE_BITMAP(dev_map, IB_UVERBS_MAX_DEVICES); static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file, + struct ib_device *ib_dev, const char __user *buf, int in_len, int out_len) = { [IB_USER_VERBS_CMD_GET_CONTEXT] = ib_uverbs_get_context, @@ -119,6 +120,7 @@ static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file, }; static int (*uverbs_ex_cmd_table[])(struct ib_uverbs_file *file, + struct ib_device *ib_dev, struct ib_udata *ucore, struct ib_udata *uhw) = { [IB_USER_VERBS_EX_CMD_CREATE_FLOW] = ib_uverbs_ex_create_flow, @@ -557,6 +559,7 @@ void ib_uverbs_free_async_event_file(struct ib_uverbs_file *file) } struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, + struct ib_device *ib_dev, int is_async) { struct ib_uverbs_event_file *ev_file; @@ -586,7 +589,7 @@ struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, uverbs_file->async_file = ev_file; kref_get(&uverbs_file->async_file->ref); INIT_IB_EVENT_HANDLER(&uverbs_file->event_handler, - uverbs_file->device->ib_dev, + ib_dev, ib_uverbs_event_handler); ret = ib_register_event_handler(&uverbs_file->event_handler); if (ret) @@ -643,9 +646,13 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, size_t count, loff_t *pos) { struct ib_uverbs_file *file = filp->private_data; + struct ib_device *ib_dev = file->device->ib_dev; struct ib_uverbs_cmd_hdr hdr; __u32 flags; + if (!ib_dev) + return -ENODEV; + if (count < sizeof hdr) return -EINVAL; @@ -672,13 +679,13 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, command != IB_USER_VERBS_CMD_GET_CONTEXT) return -EINVAL; - if (!(file->device->ib_dev->uverbs_cmd_mask & (1ull << command))) + if (!(ib_dev->uverbs_cmd_mask & (1ull << command))) return -ENOSYS; if (hdr.in_words * 4 != count) return -EINVAL; - return uverbs_cmd_table[command](file, + return uverbs_cmd_table[command](file, ib_dev, buf + sizeof(hdr), hdr.in_words * 4, hdr.out_words * 4); @@ -705,7 +712,7 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, if (!file->ucontext) return -EINVAL; - if (!(file->device->ib_dev->uverbs_ex_cmd_mask & (1ull << command))) + if (!(ib_dev->uverbs_ex_cmd_mask & (1ull << command))) return -ENOSYS; if (count < (sizeof(hdr) + sizeof(ex_hdr))) @@ -746,6 +753,7 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, ex_hdr.provider_out_words * 8); err = uverbs_ex_cmd_table[command](file, + ib_dev, &ucore, &uhw); @@ -761,11 +769,12 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, static int ib_uverbs_mmap(struct file *filp, struct vm_area_struct *vma) { struct ib_uverbs_file *file = filp->private_data; + struct ib_device *ib_dev = file->device->ib_dev; - if (!file->ucontext) + if (!ib_dev || !file->ucontext) return -ENODEV; else - return file->device->ib_dev->mmap(file->ucontext, vma); + return ib_dev->mmap(file->ucontext, vma); } /*