/*
* Copyright (c) 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Cisco Systems. All rights reserved.
+ * Copyright (c) 2005 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $
*/
+#include <linux/file.h>
+#include <linux/fs.h>
+
#include <asm/uaccess.h>
#include "uverbs.h"
(udata)->outlen = (olen); \
} while (0)
-ssize_t ib_uverbs_query_params(struct ib_uverbs_file *file,
- const char __user *buf,
- int in_len, int out_len)
-{
- struct ib_uverbs_query_params cmd;
- struct ib_uverbs_query_params_resp resp;
-
- if (out_len < sizeof resp)
- return -ENOSPC;
-
- if (copy_from_user(&cmd, buf, sizeof cmd))
- return -EFAULT;
-
- memset(&resp, 0, sizeof resp);
-
- resp.num_cq_events = file->device->num_comp;
-
- if (copy_to_user((void __user *) (unsigned long) cmd.response, &resp, sizeof resp))
- return -EFAULT;
-
- return in_len;
-}
-
ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
const char __user *buf,
int in_len, int out_len)
struct ib_udata udata;
struct ib_device *ibdev = file->device->ib_dev;
struct ib_ucontext *ucontext;
- int i;
+ struct file *filp;
int ret;
if (out_len < sizeof resp)
INIT_LIST_HEAD(&ucontext->srq_list);
INIT_LIST_HEAD(&ucontext->ah_list);
- resp.async_fd = file->async_file.fd;
- for (i = 0; i < file->device->num_comp; ++i)
- if (copy_to_user((void __user *) (unsigned long) cmd.cq_fd_tab +
- i * sizeof (__u32),
- &file->comp_file[i].fd, sizeof (__u32))) {
- ret = -EFAULT;
- goto err_free;
- }
+ resp.num_comp_vectors = file->device->num_comp_vectors;
+
+ filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd);
+ if (IS_ERR(filp)) {
+ ret = PTR_ERR(filp);
+ goto err_free;
+ }
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
- goto err_free;
+ goto err_file;
}
+ file->async_file = filp->private_data;
+
+ INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev,
+ ib_uverbs_event_handler);
+ ret = ib_register_event_handler(&file->event_handler);
+ if (ret)
+ goto err_file;
+
+ kref_get(&file->async_file->ref);
+ kref_get(&file->ref);
file->ucontext = ucontext;
+
+ fd_install(resp.async_fd, filp);
+
up(&file->mutex);
return in_len;
+err_file:
+ put_unused_fd(resp.async_fd);
+ fput(filp);
+
err_free:
ibdev->dealloc_ucontext(ucontext);
return in_len;
}
-ssize_t ib_uverbs_query_gid(struct ib_uverbs_file *file,
- const char __user *buf,
- int in_len, int out_len)
-{
- struct ib_uverbs_query_gid cmd;
- struct ib_uverbs_query_gid_resp resp;
- int ret;
-
- if (out_len < sizeof resp)
- return -ENOSPC;
-
- if (copy_from_user(&cmd, buf, sizeof cmd))
- return -EFAULT;
-
- memset(&resp, 0, sizeof resp);
-
- ret = ib_query_gid(file->device->ib_dev, cmd.port_num, cmd.index,
- (union ib_gid *) resp.gid);
- if (ret)
- return ret;
-
- if (copy_to_user((void __user *) (unsigned long) cmd.response,
- &resp, sizeof resp))
- return -EFAULT;
-
- return in_len;
-}
-
-ssize_t ib_uverbs_query_pkey(struct ib_uverbs_file *file,
- const char __user *buf,
- int in_len, int out_len)
-{
- struct ib_uverbs_query_pkey cmd;
- struct ib_uverbs_query_pkey_resp resp;
- int ret;
-
- if (out_len < sizeof resp)
- return -ENOSPC;
-
- if (copy_from_user(&cmd, buf, sizeof cmd))
- return -EFAULT;
-
- memset(&resp, 0, sizeof resp);
-
- ret = ib_query_pkey(file->device->ib_dev, cmd.port_num, cmd.index,
- &resp.pkey);
- if (ret)
- return ret;
-
- if (copy_to_user((void __user *) (unsigned long) cmd.response,
- &resp, sizeof resp))
- return -EFAULT;
-
- return in_len;
-}
-
ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
const char __user *buf,
int in_len, int out_len)
pd->uobject = uobj;
atomic_set(&pd->usecnt, 0);
+ down(&ib_uverbs_idr_mutex);
+
retry:
if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) {
ret = -ENOMEM;
- goto err_pd;
+ goto err_up;
}
- down(&ib_uverbs_idr_mutex);
ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id);
- up(&ib_uverbs_idr_mutex);
if (ret == -EAGAIN)
goto retry;
if (ret)
- goto err_pd;
-
- down(&file->mutex);
- list_add_tail(&uobj->list, &file->ucontext->pd_list);
- up(&file->mutex);
+ goto err_up;
memset(&resp, 0, sizeof resp);
resp.pd_handle = uobj->id;
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
- goto err_list;
+ goto err_idr;
}
- return in_len;
-
-err_list:
- down(&file->mutex);
- list_del(&uobj->list);
+ down(&file->mutex);
+ list_add_tail(&uobj->list, &file->ucontext->pd_list);
up(&file->mutex);
- down(&ib_uverbs_idr_mutex);
- idr_remove(&ib_uverbs_pd_idr, uobj->id);
up(&ib_uverbs_idr_mutex);
-err_pd:
+ return in_len;
+
+err_idr:
+ idr_remove(&ib_uverbs_pd_idr, uobj->id);
+
+err_up:
+ up(&ib_uverbs_idr_mutex);
ib_dealloc_pd(pd);
err:
if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
return -EINVAL;
+ /*
+ * Local write permission is required if remote write or
+ * remote atomic permission is also requested.
+ */
+ if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
+ !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
+ return -EINVAL;
+
obj = kmalloc(sizeof *obj, GFP_KERNEL);
if (!obj)
return -ENOMEM;
resp.mr_handle = obj->uobject.id;
- down(&file->mutex);
- list_add_tail(&obj->uobject.list, &file->ucontext->mr_list);
- up(&file->mutex);
-
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
- goto err_list;
+ goto err_idr;
}
+ down(&file->mutex);
+ list_add_tail(&obj->uobject.list, &file->ucontext->mr_list);
+ up(&file->mutex);
+
up(&ib_uverbs_idr_mutex);
return in_len;
-err_list:
- down(&file->mutex);
- list_del(&obj->uobject.list);
- up(&file->mutex);
+err_idr:
+ idr_remove(&ib_uverbs_mr_idr, obj->uobject.id);
err_unreg:
ib_dereg_mr(mr);
+ atomic_dec(&pd->usecnt);
err_up:
up(&ib_uverbs_idr_mutex);
return ret ? ret : in_len;
}
+ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_create_comp_channel cmd;
+ struct ib_uverbs_create_comp_channel_resp resp;
+ struct file *filp;
+
+ if (out_len < sizeof resp)
+ return -ENOSPC;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd);
+ if (IS_ERR(filp))
+ return PTR_ERR(filp);
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp)) {
+ put_unused_fd(resp.fd);
+ fput(filp);
+ return -EFAULT;
+ }
+
+ fd_install(resp.fd, filp);
+ return in_len;
+}
+
ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
struct ib_uverbs_create_cq_resp resp;
struct ib_udata udata;
struct ib_ucq_object *uobj;
+ struct ib_uverbs_event_file *ev_file = NULL;
struct ib_cq *cq;
int ret;
(unsigned long) cmd.response + sizeof resp,
in_len - sizeof cmd, out_len - sizeof resp);
- if (cmd.event_handler >= file->device->num_comp)
+ if (cmd.comp_vector >= file->device->num_comp_vectors)
return -EINVAL;
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
if (!uobj)
return -ENOMEM;
+ if (cmd.comp_channel >= 0) {
+ ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
+ if (!ev_file) {
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
uobj->uobject.user_handle = cmd.user_handle;
uobj->uobject.context = file->ucontext;
+ uobj->uverbs_file = file;
uobj->comp_events_reported = 0;
uobj->async_events_reported = 0;
INIT_LIST_HEAD(&uobj->comp_list);
cq->uobject = &uobj->uobject;
cq->comp_handler = ib_uverbs_comp_handler;
cq->event_handler = ib_uverbs_cq_event_handler;
- cq->cq_context = file;
+ cq->cq_context = ev_file;
atomic_set(&cq->usecnt, 0);
+ down(&ib_uverbs_idr_mutex);
+
retry:
if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) {
ret = -ENOMEM;
- goto err_cq;
+ goto err_up;
}
- down(&ib_uverbs_idr_mutex);
ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id);
- up(&ib_uverbs_idr_mutex);
if (ret == -EAGAIN)
goto retry;
if (ret)
- goto err_cq;
-
- down(&file->mutex);
- list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list);
- up(&file->mutex);
+ goto err_up;
memset(&resp, 0, sizeof resp);
resp.cq_handle = uobj->uobject.id;
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
- goto err_list;
+ goto err_idr;
}
- return in_len;
-
-err_list:
- down(&file->mutex);
- list_del(&uobj->uobject.list);
+ down(&file->mutex);
+ list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list);
up(&file->mutex);
- down(&ib_uverbs_idr_mutex);
- idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id);
up(&ib_uverbs_idr_mutex);
-err_cq:
+ return in_len;
+
+err_idr:
+ idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id);
+
+err_up:
+ up(&ib_uverbs_idr_mutex);
ib_destroy_cq(cq);
err:
+ if (ev_file)
+ ib_uverbs_release_ucq(file, ev_file, uobj);
kfree(uobj);
return ret;
}
+ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_poll_cq cmd;
+ struct ib_uverbs_poll_cq_resp *resp;
+ struct ib_cq *cq;
+ struct ib_wc *wc;
+ int ret = 0;
+ int i;
+ int rsize;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL);
+ if (!wc)
+ return -ENOMEM;
+
+ rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc);
+ resp = kmalloc(rsize, GFP_KERNEL);
+ if (!resp) {
+ ret = -ENOMEM;
+ goto out_wc;
+ }
+
+ down(&ib_uverbs_idr_mutex);
+ cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
+ if (!cq || cq->uobject->context != file->ucontext) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ resp->count = ib_poll_cq(cq, cmd.ne, wc);
+
+ for (i = 0; i < resp->count; i++) {
+ resp->wc[i].wr_id = wc[i].wr_id;
+ resp->wc[i].status = wc[i].status;
+ resp->wc[i].opcode = wc[i].opcode;
+ resp->wc[i].vendor_err = wc[i].vendor_err;
+ resp->wc[i].byte_len = wc[i].byte_len;
+ resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data;
+ resp->wc[i].qp_num = wc[i].qp_num;
+ resp->wc[i].src_qp = wc[i].src_qp;
+ resp->wc[i].wc_flags = wc[i].wc_flags;
+ resp->wc[i].pkey_index = wc[i].pkey_index;
+ resp->wc[i].slid = wc[i].slid;
+ resp->wc[i].sl = wc[i].sl;
+ resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits;
+ resp->wc[i].port_num = wc[i].port_num;
+ }
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+ kfree(resp);
+
+out_wc:
+ kfree(wc);
+ return ret ? ret : in_len;
+}
+
+ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_req_notify_cq cmd;
+ struct ib_cq *cq;
+ int ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ down(&ib_uverbs_idr_mutex);
+ cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
+ if (cq && cq->uobject->context == file->ucontext) {
+ ib_req_notify_cq(cq, cmd.solicited_only ?
+ IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
+ ret = in_len;
+ }
+ up(&ib_uverbs_idr_mutex);
+
+ return ret;
+}
+
ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
struct ib_uverbs_destroy_cq_resp resp;
struct ib_cq *cq;
struct ib_ucq_object *uobj;
- struct ib_uverbs_event *evt, *tmp;
+ struct ib_uverbs_event_file *ev_file;
u64 user_handle;
int ret = -EINVAL;
goto out;
user_handle = cq->uobject->user_handle;
- uobj = container_of(cq->uobject, struct ib_ucq_object, uobject);
+ uobj = container_of(cq->uobject, struct ib_ucq_object, uobject);
+ ev_file = cq->cq_context;
ret = ib_destroy_cq(cq);
if (ret)
list_del(&uobj->uobject.list);
up(&file->mutex);
- spin_lock_irq(&file->comp_file[0].lock);
- list_for_each_entry_safe(evt, tmp, &uobj->comp_list, obj_list) {
- list_del(&evt->list);
- kfree(evt);
- }
- spin_unlock_irq(&file->comp_file[0].lock);
-
- spin_lock_irq(&file->async_file.lock);
- list_for_each_entry_safe(evt, tmp, &uobj->async_list, obj_list) {
- list_del(&evt->list);
- kfree(evt);
- }
- spin_unlock_irq(&file->async_file.lock);
+ ib_uverbs_release_ucq(file, ev_file, uobj);
resp.comp_events_reported = uobj->comp_events_reported;
resp.async_events_reported = uobj->async_events_reported;
struct ib_uverbs_create_qp cmd;
struct ib_uverbs_create_qp_resp resp;
struct ib_udata udata;
- struct ib_uevent_object *uobj;
+ struct ib_uqp_object *uobj;
struct ib_pd *pd;
struct ib_cq *scq, *rcq;
struct ib_srq *srq;
attr.cap.max_recv_sge = cmd.max_recv_sge;
attr.cap.max_inline_data = cmd.max_inline_data;
- uobj->uobject.user_handle = cmd.user_handle;
- uobj->uobject.context = file->ucontext;
- uobj->events_reported = 0;
- INIT_LIST_HEAD(&uobj->event_list);
+ uobj->uevent.uobject.user_handle = cmd.user_handle;
+ uobj->uevent.uobject.context = file->ucontext;
+ uobj->uevent.events_reported = 0;
+ INIT_LIST_HEAD(&uobj->uevent.event_list);
+ INIT_LIST_HEAD(&uobj->mcast_list);
qp = pd->device->create_qp(pd, &attr, &udata);
if (IS_ERR(qp)) {
qp->send_cq = attr.send_cq;
qp->recv_cq = attr.recv_cq;
qp->srq = attr.srq;
- qp->uobject = &uobj->uobject;
+ qp->uobject = &uobj->uevent.uobject;
qp->event_handler = attr.event_handler;
qp->qp_context = attr.qp_context;
qp->qp_type = attr.qp_type;
goto err_destroy;
}
- ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uobject.id);
+ ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uevent.uobject.id);
if (ret == -EAGAIN)
goto retry;
if (ret)
goto err_destroy;
- resp.qp_handle = uobj->uobject.id;
-
- down(&file->mutex);
- list_add_tail(&uobj->uobject.list, &file->ucontext->qp_list);
- up(&file->mutex);
+ resp.qp_handle = uobj->uevent.uobject.id;
+ resp.max_recv_sge = attr.cap.max_recv_sge;
+ resp.max_send_sge = attr.cap.max_send_sge;
+ resp.max_recv_wr = attr.cap.max_recv_wr;
+ resp.max_send_wr = attr.cap.max_send_wr;
+ resp.max_inline_data = attr.cap.max_inline_data;
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
- goto err_list;
+ goto err_idr;
}
+ down(&file->mutex);
+ list_add_tail(&uobj->uevent.uobject.list, &file->ucontext->qp_list);
+ up(&file->mutex);
+
up(&ib_uverbs_idr_mutex);
return in_len;
-err_list:
- down(&file->mutex);
- list_del(&uobj->uobject.list);
- up(&file->mutex);
+err_idr:
+ idr_remove(&ib_uverbs_qp_idr, uobj->uevent.uobject.id);
err_destroy:
ib_destroy_qp(qp);
+ atomic_dec(&pd->usecnt);
+ atomic_dec(&attr.send_cq->usecnt);
+ atomic_dec(&attr.recv_cq->usecnt);
+ if (attr.srq)
+ atomic_dec(&attr.srq->usecnt);
err_up:
up(&ib_uverbs_idr_mutex);
struct ib_uverbs_destroy_qp cmd;
struct ib_uverbs_destroy_qp_resp resp;
struct ib_qp *qp;
- struct ib_uevent_object *uobj;
- struct ib_uverbs_event *evt, *tmp;
+ struct ib_uqp_object *uobj;
int ret = -EINVAL;
if (copy_from_user(&cmd, buf, sizeof cmd))
if (!qp || qp->uobject->context != file->ucontext)
goto out;
- uobj = container_of(qp->uobject, struct ib_uevent_object, uobject);
+ uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
+
+ if (!list_empty(&uobj->mcast_list)) {
+ ret = -EBUSY;
+ goto out;
+ }
ret = ib_destroy_qp(qp);
if (ret)
idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle);
down(&file->mutex);
- list_del(&uobj->uobject.list);
+ list_del(&uobj->uevent.uobject.list);
up(&file->mutex);
- spin_lock_irq(&file->async_file.lock);
- list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) {
- list_del(&evt->list);
- kfree(evt);
- }
- spin_unlock_irq(&file->async_file.lock);
+ ib_uverbs_release_uevent(file, &uobj->uevent);
- resp.events_reported = uobj->events_reported;
+ resp.events_reported = uobj->uevent.events_reported;
kfree(uobj);
return ret ? ret : in_len;
}
+ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_post_send cmd;
+ struct ib_uverbs_post_send_resp resp;
+ struct ib_uverbs_send_wr *user_wr;
+ struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
+ struct ib_qp *qp;
+ int i, sg_ind;
+ ssize_t ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
+ cmd.sge_count * sizeof (struct ib_uverbs_sge))
+ return -EINVAL;
+
+ if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
+ return -EINVAL;
+
+ user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
+ if (!user_wr)
+ return -ENOMEM;
+
+ down(&ib_uverbs_idr_mutex);
+
+ qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
+ if (!qp || qp->uobject->context != file->ucontext)
+ goto out;
+
+ sg_ind = 0;
+ last = NULL;
+ for (i = 0; i < cmd.wr_count; ++i) {
+ if (copy_from_user(user_wr,
+ buf + sizeof cmd + i * cmd.wqe_size,
+ cmd.wqe_size)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ if (user_wr->num_sge + sg_ind > cmd.sge_count) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
+ user_wr->num_sge * sizeof (struct ib_sge),
+ GFP_KERNEL);
+ if (!next) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (!last)
+ wr = next;
+ else
+ last->next = next;
+ last = next;
+
+ next->next = NULL;
+ next->wr_id = user_wr->wr_id;
+ next->num_sge = user_wr->num_sge;
+ next->opcode = user_wr->opcode;
+ next->send_flags = user_wr->send_flags;
+ next->imm_data = (__be32 __force) user_wr->imm_data;
+
+ if (qp->qp_type == IB_QPT_UD) {
+ next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr,
+ user_wr->wr.ud.ah);
+ if (!next->wr.ud.ah) {
+ ret = -EINVAL;
+ goto out;
+ }
+ next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
+ next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
+ } else {
+ switch (next->opcode) {
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ case IB_WR_RDMA_READ:
+ next->wr.rdma.remote_addr =
+ user_wr->wr.rdma.remote_addr;
+ next->wr.rdma.rkey =
+ user_wr->wr.rdma.rkey;
+ break;
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ next->wr.atomic.remote_addr =
+ user_wr->wr.atomic.remote_addr;
+ next->wr.atomic.compare_add =
+ user_wr->wr.atomic.compare_add;
+ next->wr.atomic.swap = user_wr->wr.atomic.swap;
+ next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (next->num_sge) {
+ next->sg_list = (void *) next +
+ ALIGN(sizeof *next, sizeof (struct ib_sge));
+ if (copy_from_user(next->sg_list,
+ buf + sizeof cmd +
+ cmd.wr_count * cmd.wqe_size +
+ sg_ind * sizeof (struct ib_sge),
+ next->num_sge * sizeof (struct ib_sge))) {
+ ret = -EFAULT;
+ goto out;
+ }
+ sg_ind += next->num_sge;
+ } else
+ next->sg_list = NULL;
+ }
+
+ resp.bad_wr = 0;
+ ret = qp->device->post_send(qp, wr, &bad_wr);
+ if (ret)
+ for (next = wr; next; next = next->next) {
+ ++resp.bad_wr;
+ if (next == bad_wr)
+ break;
+ }
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ kfree(user_wr);
+
+ return ret ? ret : in_len;
+}
+
+static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
+ int in_len,
+ u32 wr_count,
+ u32 sge_count,
+ u32 wqe_size)
+{
+ struct ib_uverbs_recv_wr *user_wr;
+ struct ib_recv_wr *wr = NULL, *last, *next;
+ int sg_ind;
+ int i;
+ int ret;
+
+ if (in_len < wqe_size * wr_count +
+ sge_count * sizeof (struct ib_uverbs_sge))
+ return ERR_PTR(-EINVAL);
+
+ if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
+ return ERR_PTR(-EINVAL);
+
+ user_wr = kmalloc(wqe_size, GFP_KERNEL);
+ if (!user_wr)
+ return ERR_PTR(-ENOMEM);
+
+ sg_ind = 0;
+ last = NULL;
+ for (i = 0; i < wr_count; ++i) {
+ if (copy_from_user(user_wr, buf + i * wqe_size,
+ wqe_size)) {
+ ret = -EFAULT;
+ goto err;
+ }
+
+ if (user_wr->num_sge + sg_ind > sge_count) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
+ user_wr->num_sge * sizeof (struct ib_sge),
+ GFP_KERNEL);
+ if (!next) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ if (!last)
+ wr = next;
+ else
+ last->next = next;
+ last = next;
+
+ next->next = NULL;
+ next->wr_id = user_wr->wr_id;
+ next->num_sge = user_wr->num_sge;
+
+ if (next->num_sge) {
+ next->sg_list = (void *) next +
+ ALIGN(sizeof *next, sizeof (struct ib_sge));
+ if (copy_from_user(next->sg_list,
+ buf + wr_count * wqe_size +
+ sg_ind * sizeof (struct ib_sge),
+ next->num_sge * sizeof (struct ib_sge))) {
+ ret = -EFAULT;
+ goto err;
+ }
+ sg_ind += next->num_sge;
+ } else
+ next->sg_list = NULL;
+ }
+
+ kfree(user_wr);
+ return wr;
+
+err:
+ kfree(user_wr);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ return ERR_PTR(ret);
+}
+
+ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_post_recv cmd;
+ struct ib_uverbs_post_recv_resp resp;
+ struct ib_recv_wr *wr, *next, *bad_wr;
+ struct ib_qp *qp;
+ ssize_t ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
+ in_len - sizeof cmd, cmd.wr_count,
+ cmd.sge_count, cmd.wqe_size);
+ if (IS_ERR(wr))
+ return PTR_ERR(wr);
+
+ down(&ib_uverbs_idr_mutex);
+
+ qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
+ if (!qp || qp->uobject->context != file->ucontext)
+ goto out;
+
+ resp.bad_wr = 0;
+ ret = qp->device->post_recv(qp, wr, &bad_wr);
+ if (ret)
+ for (next = wr; next; next = next->next) {
+ ++resp.bad_wr;
+ if (next == bad_wr)
+ break;
+ }
+
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ return ret ? ret : in_len;
+}
+
+ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_post_srq_recv cmd;
+ struct ib_uverbs_post_srq_recv_resp resp;
+ struct ib_recv_wr *wr, *next, *bad_wr;
+ struct ib_srq *srq;
+ ssize_t ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
+ in_len - sizeof cmd, cmd.wr_count,
+ cmd.sge_count, cmd.wqe_size);
+ if (IS_ERR(wr))
+ return PTR_ERR(wr);
+
+ down(&ib_uverbs_idr_mutex);
+
+ srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
+ if (!srq || srq->uobject->context != file->ucontext)
+ goto out;
+
+ resp.bad_wr = 0;
+ ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
+ if (ret)
+ for (next = wr; next; next = next->next) {
+ ++resp.bad_wr;
+ if (next == bad_wr)
+ break;
+ }
+
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ return ret ? ret : in_len;
+}
+
+ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_create_ah cmd;
+ struct ib_uverbs_create_ah_resp resp;
+ struct ib_uobject *uobj;
+ struct ib_pd *pd;
+ struct ib_ah *ah;
+ struct ib_ah_attr attr;
+ int ret;
+
+ if (out_len < sizeof resp)
+ return -ENOSPC;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
+ if (!uobj)
+ return -ENOMEM;
+
+ down(&ib_uverbs_idr_mutex);
+
+ pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
+ if (!pd || pd->uobject->context != file->ucontext) {
+ ret = -EINVAL;
+ goto err_up;
+ }
+
+ uobj->user_handle = cmd.user_handle;
+ uobj->context = file->ucontext;
+
+ attr.dlid = cmd.attr.dlid;
+ attr.sl = cmd.attr.sl;
+ attr.src_path_bits = cmd.attr.src_path_bits;
+ attr.static_rate = cmd.attr.static_rate;
+ attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
+ attr.port_num = cmd.attr.port_num;
+ attr.grh.flow_label = cmd.attr.grh.flow_label;
+ attr.grh.sgid_index = cmd.attr.grh.sgid_index;
+ attr.grh.hop_limit = cmd.attr.grh.hop_limit;
+ attr.grh.traffic_class = cmd.attr.grh.traffic_class;
+ memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
+
+ ah = ib_create_ah(pd, &attr);
+ if (IS_ERR(ah)) {
+ ret = PTR_ERR(ah);
+ goto err_up;
+ }
+
+ ah->uobject = uobj;
+
+retry:
+ if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) {
+ ret = -ENOMEM;
+ goto err_destroy;
+ }
+
+ ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id);
+
+ if (ret == -EAGAIN)
+ goto retry;
+ if (ret)
+ goto err_destroy;
+
+ resp.ah_handle = uobj->id;
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp)) {
+ ret = -EFAULT;
+ goto err_idr;
+ }
+
+ down(&file->mutex);
+ list_add_tail(&uobj->list, &file->ucontext->ah_list);
+ up(&file->mutex);
+
+ up(&ib_uverbs_idr_mutex);
+
+ return in_len;
+
+err_idr:
+ idr_remove(&ib_uverbs_ah_idr, uobj->id);
+
+err_destroy:
+ ib_destroy_ah(ah);
+
+err_up:
+ up(&ib_uverbs_idr_mutex);
+
+ kfree(uobj);
+ return ret;
+}
+
+ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len, int out_len)
+{
+ struct ib_uverbs_destroy_ah cmd;
+ struct ib_ah *ah;
+ struct ib_uobject *uobj;
+ int ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ down(&ib_uverbs_idr_mutex);
+
+ ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle);
+ if (!ah || ah->uobject->context != file->ucontext)
+ goto out;
+
+ uobj = ah->uobject;
+
+ ret = ib_destroy_ah(ah);
+ if (ret)
+ goto out;
+
+ idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle);
+
+ down(&file->mutex);
+ list_del(&uobj->list);
+ up(&file->mutex);
+
+ kfree(uobj);
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ return ret ? ret : in_len;
+}
+
ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
{
struct ib_uverbs_attach_mcast cmd;
struct ib_qp *qp;
+ struct ib_uqp_object *uobj;
+ struct ib_uverbs_mcast_entry *mcast;
int ret = -EINVAL;
if (copy_from_user(&cmd, buf, sizeof cmd))
down(&ib_uverbs_idr_mutex);
qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
- if (qp && qp->uobject->context == file->ucontext)
- ret = ib_attach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
+ if (!qp || qp->uobject->context != file->ucontext)
+ goto out;
+
+ uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
+
+ list_for_each_entry(mcast, &uobj->mcast_list, list)
+ if (cmd.mlid == mcast->lid &&
+ !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
+ ret = 0;
+ goto out;
+ }
+ mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
+ if (!mcast) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ mcast->lid = cmd.mlid;
+ memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
+
+ ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
+ if (!ret) {
+ uobj = container_of(qp->uobject, struct ib_uqp_object,
+ uevent.uobject);
+ list_add_tail(&mcast->list, &uobj->mcast_list);
+ } else
+ kfree(mcast);
+
+out:
up(&ib_uverbs_idr_mutex);
return ret ? ret : in_len;
int out_len)
{
struct ib_uverbs_detach_mcast cmd;
+ struct ib_uqp_object *uobj;
struct ib_qp *qp;
+ struct ib_uverbs_mcast_entry *mcast;
int ret = -EINVAL;
if (copy_from_user(&cmd, buf, sizeof cmd))
down(&ib_uverbs_idr_mutex);
qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
- if (qp && qp->uobject->context == file->ucontext)
- ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
+ if (!qp || qp->uobject->context != file->ucontext)
+ goto out;
+
+ ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
+ if (ret)
+ goto out;
+
+ uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
+
+ list_for_each_entry(mcast, &uobj->mcast_list, list)
+ if (cmd.mlid == mcast->lid &&
+ !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
+ list_del(&mcast->list);
+ kfree(mcast);
+ break;
+ }
+out:
up(&ib_uverbs_idr_mutex);
return ret ? ret : in_len;
resp.srq_handle = uobj->uobject.id;
- down(&file->mutex);
- list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list);
- up(&file->mutex);
-
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
- goto err_list;
+ goto err_idr;
}
+ down(&file->mutex);
+ list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list);
+ up(&file->mutex);
+
up(&ib_uverbs_idr_mutex);
return in_len;
-err_list:
- down(&file->mutex);
- list_del(&uobj->uobject.list);
- up(&file->mutex);
+err_idr:
+ idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id);
err_destroy:
ib_destroy_srq(srq);
+ atomic_dec(&pd->usecnt);
err_up:
up(&ib_uverbs_idr_mutex);
}
attr.max_wr = cmd.max_wr;
- attr.max_sge = cmd.max_sge;
attr.srq_limit = cmd.srq_limit;
ret = ib_modify_srq(srq, &attr, cmd.attr_mask);
struct ib_uverbs_destroy_srq_resp resp;
struct ib_srq *srq;
struct ib_uevent_object *uobj;
- struct ib_uverbs_event *evt, *tmp;
int ret = -EINVAL;
if (copy_from_user(&cmd, buf, sizeof cmd))
list_del(&uobj->uobject.list);
up(&file->mutex);
- spin_lock_irq(&file->async_file.lock);
- list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) {
- list_del(&evt->list);
- kfree(evt);
- }
- spin_unlock_irq(&file->async_file.lock);
+ ib_uverbs_release_uevent(file, uobj);
resp.events_reported = uobj->events_reported;
projects / linux-block.git / blobdiff