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path: root/drivers/infiniband/core/mad.c
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Diffstat (limited to 'drivers/infiniband/core/mad.c')
-rw-r--r--drivers/infiniband/core/mad.c600
1 files changed, 343 insertions, 257 deletions
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 23628c622a50..b97e210ce9c8 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -1,5 +1,7 @@
/*
* Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
+ * Copyright (c) 2005 Intel Corporation. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies Ltd. 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
@@ -29,12 +31,12 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
- * $Id: mad.c 1389 2004-12-27 22:56:47Z roland $
+ * $Id: mad.c 2817 2005-07-07 11:29:26Z halr $
*/
-
#include <linux/dma-mapping.h>
#include "mad_priv.h"
+#include "mad_rmpp.h"
#include "smi.h"
#include "agent.h"
@@ -45,6 +47,7 @@ MODULE_AUTHOR("Sean Hefty");
kmem_cache_t *ib_mad_cache;
+
static struct list_head ib_mad_port_list;
static u32 ib_mad_client_id = 0;
@@ -58,16 +61,12 @@ static int method_in_use(struct ib_mad_mgmt_method_table **method,
static void remove_mad_reg_req(struct ib_mad_agent_private *priv);
static struct ib_mad_agent_private *find_mad_agent(
struct ib_mad_port_private *port_priv,
- struct ib_mad *mad, int solicited);
+ struct ib_mad *mad);
static int ib_mad_post_receive_mads(struct ib_mad_qp_info *qp_info,
struct ib_mad_private *mad);
static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv);
-static void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
- struct ib_mad_send_wc *mad_send_wc);
static void timeout_sends(void *data);
-static void cancel_sends(void *data);
static void local_completions(void *data);
-static int solicited_mad(struct ib_mad *mad);
static int add_nonoui_reg_req(struct ib_mad_reg_req *mad_reg_req,
struct ib_mad_agent_private *agent_priv,
u8 mgmt_class);
@@ -197,8 +196,8 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
if (qpn == -1)
goto error1;
- if (rmpp_version)
- goto error1; /* XXX: until RMPP implemented */
+ if (rmpp_version && rmpp_version != IB_MGMT_RMPP_VERSION)
+ goto error1;
/* Validate MAD registration request if supplied */
if (mad_reg_req) {
@@ -261,22 +260,29 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
ret = ERR_PTR(-ENOMEM);
goto error1;
}
+ memset(mad_agent_priv, 0, sizeof *mad_agent_priv);
+
+ mad_agent_priv->agent.mr = ib_get_dma_mr(port_priv->qp_info[qpn].qp->pd,
+ IB_ACCESS_LOCAL_WRITE);
+ if (IS_ERR(mad_agent_priv->agent.mr)) {
+ ret = ERR_PTR(-ENOMEM);
+ goto error2;
+ }
if (mad_reg_req) {
reg_req = kmalloc(sizeof *reg_req, GFP_KERNEL);
if (!reg_req) {
ret = ERR_PTR(-ENOMEM);
- goto error2;
+ goto error3;
}
/* Make a copy of the MAD registration request */
memcpy(reg_req, mad_reg_req, sizeof *reg_req);
}
/* Now, fill in the various structures */
- memset(mad_agent_priv, 0, sizeof *mad_agent_priv);
mad_agent_priv->qp_info = &port_priv->qp_info[qpn];
mad_agent_priv->reg_req = reg_req;
- mad_agent_priv->rmpp_version = rmpp_version;
+ mad_agent_priv->agent.rmpp_version = rmpp_version;
mad_agent_priv->agent.device = device;
mad_agent_priv->agent.recv_handler = recv_handler;
mad_agent_priv->agent.send_handler = send_handler;
@@ -301,7 +307,7 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
if (method) {
if (method_in_use(&method,
mad_reg_req))
- goto error3;
+ goto error4;
}
}
ret2 = add_nonoui_reg_req(mad_reg_req, mad_agent_priv,
@@ -317,14 +323,14 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
if (is_vendor_method_in_use(
vendor_class,
mad_reg_req))
- goto error3;
+ goto error4;
}
}
ret2 = add_oui_reg_req(mad_reg_req, mad_agent_priv);
}
if (ret2) {
ret = ERR_PTR(ret2);
- goto error3;
+ goto error4;
}
}
@@ -335,22 +341,24 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
spin_lock_init(&mad_agent_priv->lock);
INIT_LIST_HEAD(&mad_agent_priv->send_list);
INIT_LIST_HEAD(&mad_agent_priv->wait_list);
+ INIT_LIST_HEAD(&mad_agent_priv->done_list);
+ INIT_LIST_HEAD(&mad_agent_priv->rmpp_list);
INIT_WORK(&mad_agent_priv->timed_work, timeout_sends, mad_agent_priv);
INIT_LIST_HEAD(&mad_agent_priv->local_list);
INIT_WORK(&mad_agent_priv->local_work, local_completions,
mad_agent_priv);
- INIT_LIST_HEAD(&mad_agent_priv->canceled_list);
- INIT_WORK(&mad_agent_priv->canceled_work, cancel_sends, mad_agent_priv);
atomic_set(&mad_agent_priv->refcount, 1);
init_waitqueue_head(&mad_agent_priv->wait);
return &mad_agent_priv->agent;
-error3:
+error4:
spin_unlock_irqrestore(&port_priv->reg_lock, flags);
kfree(reg_req);
-error2:
+error3:
kfree(mad_agent_priv);
+error2:
+ ib_dereg_mr(mad_agent_priv->agent.mr);
error1:
return ret;
}
@@ -487,18 +495,16 @@ static void unregister_mad_agent(struct ib_mad_agent_private *mad_agent_priv)
* MADs, preventing us from queuing additional work
*/
cancel_mads(mad_agent_priv);
-
port_priv = mad_agent_priv->qp_info->port_priv;
-
cancel_delayed_work(&mad_agent_priv->timed_work);
- flush_workqueue(port_priv->wq);
spin_lock_irqsave(&port_priv->reg_lock, flags);
remove_mad_reg_req(mad_agent_priv);
list_del(&mad_agent_priv->agent_list);
spin_unlock_irqrestore(&port_priv->reg_lock, flags);
- /* XXX: Cleanup pending RMPP receives for this agent */
+ flush_workqueue(port_priv->wq);
+ ib_cancel_rmpp_recvs(mad_agent_priv);
atomic_dec(&mad_agent_priv->refcount);
wait_event(mad_agent_priv->wait,
@@ -506,6 +512,7 @@ static void unregister_mad_agent(struct ib_mad_agent_private *mad_agent_priv)
if (mad_agent_priv->reg_req)
kfree(mad_agent_priv->reg_req);
+ ib_dereg_mr(mad_agent_priv->agent.mr);
kfree(mad_agent_priv);
}
@@ -551,6 +558,13 @@ int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent)
}
EXPORT_SYMBOL(ib_unregister_mad_agent);
+static inline int response_mad(struct ib_mad *mad)
+{
+ /* Trap represses are responses although response bit is reset */
+ return ((mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) ||
+ (mad->mad_hdr.method & IB_MGMT_METHOD_RESP));
+}
+
static void dequeue_mad(struct ib_mad_list_head *mad_list)
{
struct ib_mad_queue *mad_queue;
@@ -643,7 +657,7 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
struct ib_smp *smp,
struct ib_send_wr *send_wr)
{
- int ret, solicited;
+ int ret;
unsigned long flags;
struct ib_mad_local_private *local;
struct ib_mad_private *mad_priv;
@@ -689,11 +703,7 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
switch (ret)
{
case IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY:
- /*
- * See if response is solicited and
- * there is a recv handler
- */
- if (solicited_mad(&mad_priv->mad.mad) &&
+ if (response_mad(&mad_priv->mad.mad) &&
mad_agent_priv->agent.recv_handler) {
local->mad_priv = mad_priv;
local->recv_mad_agent = mad_agent_priv;
@@ -710,15 +720,13 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
break;
case IB_MAD_RESULT_SUCCESS:
/* Treat like an incoming receive MAD */
- solicited = solicited_mad(&mad_priv->mad.mad);
port_priv = ib_get_mad_port(mad_agent_priv->agent.device,
mad_agent_priv->agent.port_num);
if (port_priv) {
mad_priv->mad.mad.mad_hdr.tid =
((struct ib_mad *)smp)->mad_hdr.tid;
recv_mad_agent = find_mad_agent(port_priv,
- &mad_priv->mad.mad,
- solicited);
+ &mad_priv->mad.mad);
}
if (!port_priv || !recv_mad_agent) {
kmem_cache_free(ib_mad_cache, mad_priv);
@@ -750,43 +758,133 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
list_add_tail(&local->completion_list, &mad_agent_priv->local_list);
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
queue_work(mad_agent_priv->qp_info->port_priv->wq,
- &mad_agent_priv->local_work);
+ &mad_agent_priv->local_work);
ret = 1;
out:
return ret;
}
-static int ib_send_mad(struct ib_mad_agent_private *mad_agent_priv,
- struct ib_mad_send_wr_private *mad_send_wr)
+static int get_buf_length(int hdr_len, int data_len)
+{
+ int seg_size, pad;
+
+ seg_size = sizeof(struct ib_mad) - hdr_len;
+ if (data_len && seg_size) {
+ pad = seg_size - data_len % seg_size;
+ if (pad == seg_size)
+ pad = 0;
+ } else
+ pad = seg_size;
+ return hdr_len + data_len + pad;
+}
+
+struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
+ u32 remote_qpn, u16 pkey_index,
+ struct ib_ah *ah, int rmpp_active,
+ int hdr_len, int data_len,
+ unsigned int __nocast gfp_mask)
+{
+ struct ib_mad_agent_private *mad_agent_priv;
+ struct ib_mad_send_buf *send_buf;
+ int buf_size;
+ void *buf;
+
+ mad_agent_priv = container_of(mad_agent,
+ struct ib_mad_agent_private, agent);
+ buf_size = get_buf_length(hdr_len, data_len);
+
+ if ((!mad_agent->rmpp_version &&
+ (rmpp_active || buf_size > sizeof(struct ib_mad))) ||
+ (!rmpp_active && buf_size > sizeof(struct ib_mad)))
+ return ERR_PTR(-EINVAL);
+
+ buf = kmalloc(sizeof *send_buf + buf_size, gfp_mask);
+ if (!buf)
+ return ERR_PTR(-ENOMEM);
+ memset(buf, 0, sizeof *send_buf + buf_size);
+
+ send_buf = buf + buf_size;
+ send_buf->mad = buf;
+
+ send_buf->sge.addr = dma_map_single(mad_agent->device->dma_device,
+ buf, buf_size, DMA_TO_DEVICE);
+ pci_unmap_addr_set(send_buf, mapping, send_buf->sge.addr);
+ send_buf->sge.length = buf_size;
+ send_buf->sge.lkey = mad_agent->mr->lkey;
+
+ send_buf->send_wr.wr_id = (unsigned long) send_buf;
+ send_buf->send_wr.sg_list = &send_buf->sge;
+ send_buf->send_wr.num_sge = 1;
+ send_buf->send_wr.opcode = IB_WR_SEND;
+ send_buf->send_wr.send_flags = IB_SEND_SIGNALED;
+ send_buf->send_wr.wr.ud.ah = ah;
+ send_buf->send_wr.wr.ud.mad_hdr = &send_buf->mad->mad_hdr;
+ send_buf->send_wr.wr.ud.remote_qpn = remote_qpn;
+ send_buf->send_wr.wr.ud.remote_qkey = IB_QP_SET_QKEY;
+ send_buf->send_wr.wr.ud.pkey_index = pkey_index;
+
+ if (rmpp_active) {
+ struct ib_rmpp_mad *rmpp_mad;
+ rmpp_mad = (struct ib_rmpp_mad *)send_buf->mad;
+ rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(hdr_len -
+ offsetof(struct ib_rmpp_mad, data) + data_len);
+ rmpp_mad->rmpp_hdr.rmpp_version = mad_agent->rmpp_version;
+ rmpp_mad->rmpp_hdr.rmpp_type = IB_MGMT_RMPP_TYPE_DATA;
+ ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr,
+ IB_MGMT_RMPP_FLAG_ACTIVE);
+ }
+
+ send_buf->mad_agent = mad_agent;
+ atomic_inc(&mad_agent_priv->refcount);
+ return send_buf;
+}
+EXPORT_SYMBOL(ib_create_send_mad);
+
+void ib_free_send_mad(struct ib_mad_send_buf *send_buf)
+{
+ struct ib_mad_agent_private *mad_agent_priv;
+
+ mad_agent_priv = container_of(send_buf->mad_agent,
+ struct ib_mad_agent_private, agent);
+
+ dma_unmap_single(send_buf->mad_agent->device->dma_device,
+ pci_unmap_addr(send_buf, mapping),
+ send_buf->sge.length, DMA_TO_DEVICE);
+ kfree(send_buf->mad);
+
+ if (atomic_dec_and_test(&mad_agent_priv->refcount))
+ wake_up(&mad_agent_priv->wait);
+}
+EXPORT_SYMBOL(ib_free_send_mad);
+
+int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr)
{
struct ib_mad_qp_info *qp_info;
struct ib_send_wr *bad_send_wr;
+ struct list_head *list;
unsigned long flags;
int ret;
- /* Replace user's WR ID with our own to find WR upon completion */
- qp_info = mad_agent_priv->qp_info;
- mad_send_wr->wr_id = mad_send_wr->send_wr.wr_id;
+ /* Set WR ID to find mad_send_wr upon completion */
+ qp_info = mad_send_wr->mad_agent_priv->qp_info;
mad_send_wr->send_wr.wr_id = (unsigned long)&mad_send_wr->mad_list;
mad_send_wr->mad_list.mad_queue = &qp_info->send_queue;
spin_lock_irqsave(&qp_info->send_queue.lock, flags);
- if (qp_info->send_queue.count++ < qp_info->send_queue.max_active) {
- list_add_tail(&mad_send_wr->mad_list.list,
- &qp_info->send_queue.list);
- spin_unlock_irqrestore(&qp_info->send_queue.lock, flags);
- ret = ib_post_send(mad_agent_priv->agent.qp,
+ if (qp_info->send_queue.count < qp_info->send_queue.max_active) {
+ ret = ib_post_send(mad_send_wr->mad_agent_priv->agent.qp,
&mad_send_wr->send_wr, &bad_send_wr);
- if (ret) {
- printk(KERN_ERR PFX "ib_post_send failed: %d\n", ret);
- dequeue_mad(&mad_send_wr->mad_list);
- }
+ list = &qp_info->send_queue.list;
} else {
- list_add_tail(&mad_send_wr->mad_list.list,
- &qp_info->overflow_list);
- spin_unlock_irqrestore(&qp_info->send_queue.lock, flags);
ret = 0;
+ list = &qp_info->overflow_list;
}
+
+ if (!ret) {
+ qp_info->send_queue.count++;
+ list_add_tail(&mad_send_wr->mad_list.list, list);
+ }
+ spin_unlock_irqrestore(&qp_info->send_queue.lock, flags);
return ret;
}
@@ -860,18 +958,19 @@ int ib_post_send_mad(struct ib_mad_agent *mad_agent,
ret = -ENOMEM;
goto error2;
}
+ memset(mad_send_wr, 0, sizeof *mad_send_wr);
mad_send_wr->send_wr = *send_wr;
mad_send_wr->send_wr.sg_list = mad_send_wr->sg_list;
memcpy(mad_send_wr->sg_list, send_wr->sg_list,
sizeof *send_wr->sg_list * send_wr->num_sge);
- mad_send_wr->send_wr.next = NULL;
+ mad_send_wr->wr_id = send_wr->wr_id;
mad_send_wr->tid = send_wr->wr.ud.mad_hdr->tid;
- mad_send_wr->agent = mad_agent;
+ mad_send_wr->mad_agent_priv = mad_agent_priv;
/* Timeout will be updated after send completes */
mad_send_wr->timeout = msecs_to_jiffies(send_wr->wr.
ud.timeout_ms);
- mad_send_wr->retry = 0;
+ mad_send_wr->retries = mad_send_wr->send_wr.wr.ud.retries;
/* One reference for each work request to QP + response */
mad_send_wr->refcount = 1 + (mad_send_wr->timeout > 0);
mad_send_wr->status = IB_WC_SUCCESS;
@@ -883,8 +982,13 @@ int ib_post_send_mad(struct ib_mad_agent *mad_agent,
&mad_agent_priv->send_list);
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
- ret = ib_send_mad(mad_agent_priv, mad_send_wr);
- if (ret) {
+ if (mad_agent_priv->agent.rmpp_version) {
+ ret = ib_send_rmpp_mad(mad_send_wr);
+ if (ret >= 0 && ret != IB_RMPP_RESULT_CONSUMED)
+ ret = ib_send_mad(mad_send_wr);
+ } else
+ ret = ib_send_mad(mad_send_wr);
+ if (ret < 0) {
/* Fail send request */
spin_lock_irqsave(&mad_agent_priv->lock, flags);
list_del(&mad_send_wr->agent_list);
@@ -910,41 +1014,28 @@ EXPORT_SYMBOL(ib_post_send_mad);
*/
void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc)
{
- struct ib_mad_recv_buf *entry;
+ struct ib_mad_recv_buf *mad_recv_buf, *temp_recv_buf;
struct ib_mad_private_header *mad_priv_hdr;
struct ib_mad_private *priv;
+ struct list_head free_list;
- mad_priv_hdr = container_of(mad_recv_wc,
- struct ib_mad_private_header,
- recv_wc);
- priv = container_of(mad_priv_hdr, struct ib_mad_private, header);
+ INIT_LIST_HEAD(&free_list);
+ list_splice_init(&mad_recv_wc->rmpp_list, &free_list);
- /*
- * Walk receive buffer list associated with this WC
- * No need to remove them from list of receive buffers
- */
- list_for_each_entry(entry, &mad_recv_wc->recv_buf.list, list) {
- /* Free previous receive buffer */
- kmem_cache_free(ib_mad_cache, priv);
+ list_for_each_entry_safe(mad_recv_buf, temp_recv_buf,
+ &free_list, list) {
+ mad_recv_wc = container_of(mad_recv_buf, struct ib_mad_recv_wc,
+ recv_buf);
mad_priv_hdr = container_of(mad_recv_wc,
struct ib_mad_private_header,
recv_wc);
priv = container_of(mad_priv_hdr, struct ib_mad_private,
header);
+ kmem_cache_free(ib_mad_cache, priv);
}
-
- /* Free last buffer */
- kmem_cache_free(ib_mad_cache, priv);
}
EXPORT_SYMBOL(ib_free_recv_mad);
-void ib_coalesce_recv_mad(struct ib_mad_recv_wc *mad_recv_wc,
- void *buf)
-{
- printk(KERN_ERR PFX "ib_coalesce_recv_mad() not implemented yet\n");
-}
-EXPORT_SYMBOL(ib_coalesce_recv_mad);
-
struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp,
u8 rmpp_version,
ib_mad_send_handler send_handler,
@@ -1338,42 +1429,15 @@ out:
return;
}
-static int response_mad(struct ib_mad *mad)
-{
- /* Trap represses are responses although response bit is reset */
- return ((mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) ||
- (mad->mad_hdr.method & IB_MGMT_METHOD_RESP));
-}
-
-static int solicited_mad(struct ib_mad *mad)
-{
- /* CM MADs are never solicited */
- if (mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CM) {
- return 0;
- }
-
- /* XXX: Determine whether MAD is using RMPP */
-
- /* Not using RMPP */
- /* Is this MAD a response to a previous MAD ? */
- return response_mad(mad);
-}
-
static struct ib_mad_agent_private *
find_mad_agent(struct ib_mad_port_private *port_priv,
- struct ib_mad *mad,
- int solicited)
+ struct ib_mad *mad)
{
struct ib_mad_agent_private *mad_agent = NULL;
unsigned long flags;
spin_lock_irqsave(&port_priv->reg_lock, flags);
-
- /*
- * Whether MAD was solicited determines type of routing to
- * MAD client.
- */
- if (solicited) {
+ if (response_mad(mad)) {
u32 hi_tid;
struct ib_mad_agent_private *entry;
@@ -1477,21 +1541,20 @@ out:
return valid;
}
-/*
- * Return start of fully reassembled MAD, or NULL, if MAD isn't assembled yet
- */
-static struct ib_mad_private *
-reassemble_recv(struct ib_mad_agent_private *mad_agent_priv,
- struct ib_mad_private *recv)
+static int is_data_mad(struct ib_mad_agent_private *mad_agent_priv,
+ struct ib_mad_hdr *mad_hdr)
{
- /* Until we have RMPP, all receives are reassembled!... */
- INIT_LIST_HEAD(&recv->header.recv_wc.recv_buf.list);
- return recv;
+ struct ib_rmpp_mad *rmpp_mad;
+
+ rmpp_mad = (struct ib_rmpp_mad *)mad_hdr;
+ return !mad_agent_priv->agent.rmpp_version ||
+ !(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
+ IB_MGMT_RMPP_FLAG_ACTIVE) ||
+ (rmpp_mad->rmpp_hdr.rmpp_type == IB_MGMT_RMPP_TYPE_DATA);
}
-static struct ib_mad_send_wr_private*
-find_send_req(struct ib_mad_agent_private *mad_agent_priv,
- u64 tid)
+struct ib_mad_send_wr_private*
+ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv, u64 tid)
{
struct ib_mad_send_wr_private *mad_send_wr;
@@ -1507,7 +1570,9 @@ find_send_req(struct ib_mad_agent_private *mad_agent_priv,
*/
list_for_each_entry(mad_send_wr, &mad_agent_priv->send_list,
agent_list) {
- if (mad_send_wr->tid == tid && mad_send_wr->timeout) {
+ if (is_data_mad(mad_agent_priv,
+ mad_send_wr->send_wr.wr.ud.mad_hdr) &&
+ mad_send_wr->tid == tid && mad_send_wr->timeout) {
/* Verify request has not been canceled */
return (mad_send_wr->status == IB_WC_SUCCESS) ?
mad_send_wr : NULL;
@@ -1516,43 +1581,55 @@ find_send_req(struct ib_mad_agent_private *mad_agent_priv,
return NULL;
}
+void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr)
+{
+ mad_send_wr->timeout = 0;
+ if (mad_send_wr->refcount == 1) {
+ list_del(&mad_send_wr->agent_list);
+ list_add_tail(&mad_send_wr->agent_list,
+ &mad_send_wr->mad_agent_priv->done_list);
+ }
+}
+
static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv,
- struct ib_mad_private *recv,
- int solicited)
+ struct ib_mad_recv_wc *mad_recv_wc)
{
struct ib_mad_send_wr_private *mad_send_wr;
struct ib_mad_send_wc mad_send_wc;
unsigned long flags;
-
- /* Fully reassemble receive before processing */
- recv = reassemble_recv(mad_agent_priv, recv);
- if (!recv) {
- if (atomic_dec_and_test(&mad_agent_priv->refcount))
- wake_up(&mad_agent_priv->wait);
- return;
+ u64 tid;
+
+ INIT_LIST_HEAD(&mad_recv_wc->rmpp_list);
+ list_add(&mad_recv_wc->recv_buf.list, &mad_recv_wc->rmpp_list);
+ if (mad_agent_priv->agent.rmpp_version) {
+ mad_recv_wc = ib_process_rmpp_recv_wc(mad_agent_priv,
+ mad_recv_wc);
+ if (!mad_recv_wc) {
+ if (atomic_dec_and_test(&mad_agent_priv->refcount))
+ wake_up(&mad_agent_priv->wait);
+ return;
+ }
}
/* Complete corresponding request */
- if (solicited) {
+ if (response_mad(mad_recv_wc->recv_buf.mad)) {
+ tid = mad_recv_wc->recv_buf.mad->mad_hdr.tid;
spin_lock_irqsave(&mad_agent_priv->lock, flags);
- mad_send_wr = find_send_req(mad_agent_priv,
- recv->mad.mad.mad_hdr.tid);
+ mad_send_wr = ib_find_send_mad(mad_agent_priv, tid);
if (!mad_send_wr) {
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
- ib_free_recv_mad(&recv->header.recv_wc);
+ ib_free_recv_mad(mad_recv_wc);
if (atomic_dec_and_test(&mad_agent_priv->refcount))
wake_up(&mad_agent_priv->wait);
return;
}
- /* Timeout = 0 means that we won't wait for a response */
- mad_send_wr->timeout = 0;
+ ib_mark_mad_done(mad_send_wr);
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
/* Defined behavior is to complete response before request */
- recv->header.recv_wc.wc->wr_id = mad_send_wr->wr_id;
- mad_agent_priv->agent.recv_handler(
- &mad_agent_priv->agent,
- &recv->header.recv_wc);
+ mad_recv_wc->wc->wr_id = mad_send_wr->wr_id;
+ mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent,
+ mad_recv_wc);
atomic_dec(&mad_agent_priv->refcount);
mad_send_wc.status = IB_WC_SUCCESS;
@@ -1560,9 +1637,8 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv,
mad_send_wc.wr_id = mad_send_wr->wr_id;
ib_mad_complete_send_wr(mad_send_wr, &mad_send_wc);
} else {
- mad_agent_priv->agent.recv_handler(
- &mad_agent_priv->agent,
- &recv->header.recv_wc);
+ mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent,
+ mad_recv_wc);
if (atomic_dec_and_test(&mad_agent_priv->refcount))
wake_up(&mad_agent_priv->wait);
}
@@ -1576,7 +1652,6 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
struct ib_mad_private *recv, *response;
struct ib_mad_list_head *mad_list;
struct ib_mad_agent_private *mad_agent;
- int solicited;
response = kmem_cache_alloc(ib_mad_cache, GFP_KERNEL);
if (!response)
@@ -1662,11 +1737,9 @@ local:
}
}
- /* Determine corresponding MAD agent for incoming receive MAD */
- solicited = solicited_mad(&recv->mad.mad);
- mad_agent = find_mad_agent(port_priv, &recv->mad.mad, solicited);
+ mad_agent = find_mad_agent(port_priv, &recv->mad.mad);
if (mad_agent) {
- ib_mad_complete_recv(mad_agent, recv, solicited);
+ ib_mad_complete_recv(mad_agent, &recv->header.recv_wc);
/*
* recv is freed up in error cases in ib_mad_complete_recv
* or via recv_handler in ib_mad_complete_recv()
@@ -1710,26 +1783,31 @@ static void adjust_timeout(struct ib_mad_agent_private *mad_agent_priv)
}
}
-static void wait_for_response(struct ib_mad_agent_private *mad_agent_priv,
- struct ib_mad_send_wr_private *mad_send_wr )
+static void wait_for_response(struct ib_mad_send_wr_private *mad_send_wr)
{
+ struct ib_mad_agent_private *mad_agent_priv;
struct ib_mad_send_wr_private *temp_mad_send_wr;
struct list_head *list_item;
unsigned long delay;
+ mad_agent_priv = mad_send_wr->mad_agent_priv;
list_del(&mad_send_wr->agent_list);
delay = mad_send_wr->timeout;
mad_send_wr->timeout += jiffies;
- list_for_each_prev(list_item, &mad_agent_priv->wait_list) {
- temp_mad_send_wr = list_entry(list_item,
- struct ib_mad_send_wr_private,
- agent_list);
- if (time_after(mad_send_wr->timeout,
- temp_mad_send_wr->timeout))
- break;
+ if (delay) {
+ list_for_each_prev(list_item, &mad_agent_priv->wait_list) {
+ temp_mad_send_wr = list_entry(list_item,
+ struct ib_mad_send_wr_private,
+ agent_list);
+ if (time_after(mad_send_wr->timeout,
+ temp_mad_send_wr->timeout))
+ break;
+ }
}
+ else
+ list_item = &mad_agent_priv->wait_list;
list_add(&mad_send_wr->agent_list, list_item);
/* Reschedule a work item if we have a shorter timeout */
@@ -1740,19 +1818,32 @@ static void wait_for_response(struct ib_mad_agent_private *mad_agent_priv,
}
}
+void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
+ int timeout_ms)
+{
+ mad_send_wr->timeout = msecs_to_jiffies(timeout_ms);
+ wait_for_response(mad_send_wr);
+}
+
/*
* Process a send work completion
*/
-static void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
- struct ib_mad_send_wc *mad_send_wc)
+void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
+ struct ib_mad_send_wc *mad_send_wc)
{
struct ib_mad_agent_private *mad_agent_priv;
unsigned long flags;
+ int ret;
- mad_agent_priv = container_of(mad_send_wr->agent,
- struct ib_mad_agent_private, agent);
-
+ mad_agent_priv = mad_send_wr->mad_agent_priv;
spin_lock_irqsave(&mad_agent_priv->lock, flags);
+ if (mad_agent_priv->agent.rmpp_version) {
+ ret = ib_process_rmpp_send_wc(mad_send_wr, mad_send_wc);
+ if (ret == IB_RMPP_RESULT_CONSUMED)
+ goto done;
+ } else
+ ret = IB_RMPP_RESULT_UNHANDLED;
+
if (mad_send_wc->status != IB_WC_SUCCESS &&
mad_send_wr->status == IB_WC_SUCCESS) {
mad_send_wr->status = mad_send_wc->status;
@@ -1762,10 +1853,9 @@ static void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
if (--mad_send_wr->refcount > 0) {
if (mad_send_wr->refcount == 1 && mad_send_wr->timeout &&
mad_send_wr->status == IB_WC_SUCCESS) {
- wait_for_response(mad_agent_priv, mad_send_wr);
+ wait_for_response(mad_send_wr);
}
- spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
- return;
+ goto done;
}
/* Remove send from MAD agent and notify client of completion */
@@ -1775,14 +1865,18 @@ static void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
if (mad_send_wr->status != IB_WC_SUCCESS )
mad_send_wc->status = mad_send_wr->status;
- mad_agent_priv->agent.send_handler(&mad_agent_priv->agent,
- mad_send_wc);
+ if (ret != IB_RMPP_RESULT_INTERNAL)
+ mad_agent_priv->agent.send_handler(&mad_agent_priv->agent,
+ mad_send_wc);
/* Release reference on agent taken when sending */
if (atomic_dec_and_test(&mad_agent_priv->refcount))
wake_up(&mad_agent_priv->wait);
kfree(mad_send_wr);
+ return;
+done:
+ spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
}
static void ib_mad_send_done_handler(struct ib_mad_port_private *port_priv,
@@ -1961,6 +2055,8 @@ static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv)
/* Empty wait list to prevent receives from finding a request */
list_splice_init(&mad_agent_priv->wait_list, &cancel_list);
+ /* Empty local completion list as well */
+ list_splice_init(&mad_agent_priv->local_list, &cancel_list);
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
/* Report all cancelled requests */
@@ -1980,8 +2076,7 @@ static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv)
}
static struct ib_mad_send_wr_private*
-find_send_by_wr_id(struct ib_mad_agent_private *mad_agent_priv,
- u64 wr_id)
+find_send_by_wr_id(struct ib_mad_agent_private *mad_agent_priv, u64 wr_id)
{
struct ib_mad_send_wr_private *mad_send_wr;
@@ -1993,79 +2088,50 @@ find_send_by_wr_id(struct ib_mad_agent_private *mad_agent_priv,
list_for_each_entry(mad_send_wr, &mad_agent_priv->send_list,
agent_list) {
- if (mad_send_wr->wr_id == wr_id)
+ if (is_data_mad(mad_agent_priv,
+ mad_send_wr->send_wr.wr.ud.mad_hdr) &&
+ mad_send_wr->wr_id == wr_id)
return mad_send_wr;
}
return NULL;
}
-void cancel_sends(void *data)
-{
- struct ib_mad_agent_private *mad_agent_priv;
- struct ib_mad_send_wr_private *mad_send_wr;
- struct ib_mad_send_wc mad_send_wc;
- unsigned long flags;
-
- mad_agent_priv = data;
-
- mad_send_wc.status = IB_WC_WR_FLUSH_ERR;
- mad_send_wc.vendor_err = 0;
-
- spin_lock_irqsave(&mad_agent_priv->lock, flags);
- while (!list_empty(&mad_agent_priv->canceled_list)) {
- mad_send_wr = list_entry(mad_agent_priv->canceled_list.next,
- struct ib_mad_send_wr_private,
- agent_list);
-
- list_del(&mad_send_wr->agent_list);
- spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
-
- mad_send_wc.wr_id = mad_send_wr->wr_id;
- mad_agent_priv->agent.send_handler(&mad_agent_priv->agent,
- &mad_send_wc);
-
- kfree(mad_send_wr);
- if (atomic_dec_and_test(&mad_agent_priv->refcount))
- wake_up(&mad_agent_priv->wait);
- spin_lock_irqsave(&mad_agent_priv->lock, flags);
- }
- spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
-}
-
-void ib_cancel_mad(struct ib_mad_agent *mad_agent,
- u64 wr_id)
+int ib_modify_mad(struct ib_mad_agent *mad_agent, u64 wr_id, u32 timeout_ms)
{
struct ib_mad_agent_private *mad_agent_priv;
struct ib_mad_send_wr_private *mad_send_wr;
unsigned long flags;
+ int active;
mad_agent_priv = container_of(mad_agent, struct ib_mad_agent_private,
agent);
spin_lock_irqsave(&mad_agent_priv->lock, flags);
mad_send_wr = find_send_by_wr_id(mad_agent_priv, wr_id);
- if (!mad_send_wr) {
+ if (!mad_send_wr || mad_send_wr->status != IB_WC_SUCCESS) {
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
- goto out;
+ return -EINVAL;
}
- if (mad_send_wr->status == IB_WC_SUCCESS)
- mad_send_wr->refcount -= (mad_send_wr->timeout > 0);
-
- if (mad_send_wr->refcount != 0) {
+ active = (!mad_send_wr->timeout || mad_send_wr->refcount > 1);
+ if (!timeout_ms) {
mad_send_wr->status = IB_WC_WR_FLUSH_ERR;
- spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
- goto out;
+ mad_send_wr->refcount -= (mad_send_wr->timeout > 0);
}
- list_del(&mad_send_wr->agent_list);
- list_add_tail(&mad_send_wr->agent_list, &mad_agent_priv->canceled_list);
- adjust_timeout(mad_agent_priv);
+ mad_send_wr->send_wr.wr.ud.timeout_ms = timeout_ms;
+ if (active)
+ mad_send_wr->timeout = msecs_to_jiffies(timeout_ms);
+ else
+ ib_reset_mad_timeout(mad_send_wr, timeout_ms);
+
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
+ return 0;
+}
+EXPORT_SYMBOL(ib_modify_mad);
- queue_work(mad_agent_priv->qp_info->port_priv->wq,
- &mad_agent_priv->canceled_work);
-out:
- return;
+void ib_cancel_mad(struct ib_mad_agent *mad_agent, u64 wr_id)
+{
+ ib_modify_mad(mad_agent, wr_id, 0);
}
EXPORT_SYMBOL(ib_cancel_mad);
@@ -2075,6 +2141,7 @@ static void local_completions(void *data)
struct ib_mad_local_private *local;
struct ib_mad_agent_private *recv_mad_agent;
unsigned long flags;
+ int recv = 0;
struct ib_wc wc;
struct ib_mad_send_wc mad_send_wc;
@@ -2090,10 +2157,10 @@ static void local_completions(void *data)
recv_mad_agent = local->recv_mad_agent;
if (!recv_mad_agent) {
printk(KERN_ERR PFX "No receive MAD agent for local completion\n");
- kmem_cache_free(ib_mad_cache, local->mad_priv);
goto local_send_completion;
}
+ recv = 1;
/*
* Defined behavior is to complete response
* before request
@@ -2105,7 +2172,9 @@ static void local_completions(void *data)
local->mad_priv->header.recv_wc.wc = &wc;
local->mad_priv->header.recv_wc.mad_len =
sizeof(struct ib_mad);
- INIT_LIST_HEAD(&local->mad_priv->header.recv_wc.recv_buf.list);
+ INIT_LIST_HEAD(&local->mad_priv->header.recv_wc.rmpp_list);
+ list_add(&local->mad_priv->header.recv_wc.recv_buf.list,
+ &local->mad_priv->header.recv_wc.rmpp_list);
local->mad_priv->header.recv_wc.recv_buf.grh = NULL;
local->mad_priv->header.recv_wc.recv_buf.mad =
&local->mad_priv->mad.mad;
@@ -2136,11 +2205,47 @@ local_send_completion:
spin_lock_irqsave(&mad_agent_priv->lock, flags);
list_del(&local->completion_list);
atomic_dec(&mad_agent_priv->refcount);
+ if (!recv)
+ kmem_cache_free(ib_mad_cache, local->mad_priv);
kfree(local);
}
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
}
+static int retry_send(struct ib_mad_send_wr_private *mad_send_wr)
+{
+ int ret;
+
+ if (!mad_send_wr->retries--)
+ return -ETIMEDOUT;
+
+ mad_send_wr->timeout = msecs_to_jiffies(mad_send_wr->send_wr.
+ wr.ud.timeout_ms);
+
+ if (mad_send_wr->mad_agent_priv->agent.rmpp_version) {
+ ret = ib_retry_rmpp(mad_send_wr);
+ switch (ret) {
+ case IB_RMPP_RESULT_UNHANDLED:
+ ret = ib_send_mad(mad_send_wr);
+ break;
+ case IB_RMPP_RESULT_CONSUMED:
+ ret = 0;
+ break;
+ default:
+ ret = -ECOMM;
+ break;
+ }
+ } else
+ ret = ib_send_mad(mad_send_wr);
+
+ if (!ret) {
+ mad_send_wr->refcount++;
+ list_add_tail(&mad_send_wr->agent_list,
+ &mad_send_wr->mad_agent_priv->send_list);
+ }
+ return ret;
+}
+
static void timeout_sends(void *data)
{
struct ib_mad_agent_private *mad_agent_priv;
@@ -2149,8 +2254,6 @@ static void timeout_sends(void *data)
unsigned long flags, delay;
mad_agent_priv = (struct ib_mad_agent_private *)data;
-
- mad_send_wc.status = IB_WC_RESP_TIMEOUT_ERR;
mad_send_wc.vendor_err = 0;
spin_lock_irqsave(&mad_agent_priv->lock, flags);
@@ -2170,8 +2273,16 @@ static void timeout_sends(void *data)
}
list_del(&mad_send_wr->agent_list);
+ if (mad_send_wr->status == IB_WC_SUCCESS &&
+ !retry_send(mad_send_wr))
+ continue;
+
spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
+ if (mad_send_wr->status == IB_WC_SUCCESS)
+ mad_send_wc.status = IB_WC_RESP_TIMEOUT_ERR;
+ else
+ mad_send_wc.status = mad_send_wr->status;
mad_send_wc.wr_id = mad_send_wr->wr_id;
mad_agent_priv->agent.send_handler(&mad_agent_priv->agent,
&mad_send_wc);
@@ -2447,14 +2558,6 @@ static int ib_mad_port_open(struct ib_device *device,
unsigned long flags;
char name[sizeof "ib_mad123"];
- /* First, check if port already open at MAD layer */
- port_priv = ib_get_mad_port(device, port_num);
- if (port_priv) {
- printk(KERN_DEBUG PFX "%s port %d already open\n",
- device->name, port_num);
- return 0;
- }
-
/* Create new device info */
port_priv = kmalloc(sizeof *port_priv, GFP_KERNEL);
if (!port_priv) {
@@ -2579,7 +2682,7 @@ static int ib_mad_port_close(struct ib_device *device, int port_num)
static void ib_mad_init_device(struct ib_device *device)
{
- int ret, num_ports, cur_port, i, ret2;
+ int num_ports, cur_port, i;
if (device->node_type == IB_NODE_SWITCH) {
num_ports = 1;
@@ -2589,47 +2692,37 @@ static void ib_mad_init_device(struct ib_device *device)
cur_port = 1;
}
for (i = 0; i < num_ports; i++, cur_port++) {
- ret = ib_mad_port_open(device, cur_port);
- if (ret) {
+ if (ib_mad_port_open(device, cur_port)) {
printk(KERN_ERR PFX "Couldn't open %s port %d\n",
device->name, cur_port);
goto error_device_open;
}
- ret = ib_agent_port_open(device, cur_port);
- if (ret) {
+ if (ib_agent_port_open(device, cur_port)) {
printk(KERN_ERR PFX "Couldn't open %s port %d "
"for agents\n",
device->name, cur_port);
goto error_device_open;
}
}
-
- goto error_device_query;
+ return;
error_device_open:
while (i > 0) {
cur_port--;
- ret2 = ib_agent_port_close(device, cur_port);
- if (ret2) {
+ if (ib_agent_port_close(device, cur_port))
printk(KERN_ERR PFX "Couldn't close %s port %d "
"for agents\n",
device->name, cur_port);
- }
- ret2 = ib_mad_port_close(device, cur_port);
- if (ret2) {
+ if (ib_mad_port_close(device, cur_port))
printk(KERN_ERR PFX "Couldn't close %s port %d\n",
device->name, cur_port);
- }
i--;
}
-
-error_device_query:
- return;
}
static void ib_mad_remove_device(struct ib_device *device)
{
- int ret = 0, i, num_ports, cur_port, ret2;
+ int i, num_ports, cur_port;
if (device->node_type == IB_NODE_SWITCH) {
num_ports = 1;
@@ -2639,21 +2732,13 @@ static void ib_mad_remove_device(struct ib_device *device)
cur_port = 1;
}
for (i = 0; i < num_ports; i++, cur_port++) {
- ret2 = ib_agent_port_close(device, cur_port);
- if (ret2) {
+ if (ib_agent_port_close(device, cur_port))
printk(KERN_ERR PFX "Couldn't close %s port %d "
"for agents\n",
device->name, cur_port);
- if (!ret)
- ret = ret2;
- }
- ret2 = ib_mad_port_close(device, cur_port);
- if (ret2) {
+ if (ib_mad_port_close(device, cur_port))
printk(KERN_ERR PFX "Couldn't close %s port %d\n",
device->name, cur_port);
- if (!ret)
- ret = ret2;
- }
}
}
@@ -2709,3 +2794,4 @@ static void __exit ib_mad_cleanup_module(void)
module_init(ib_mad_init_module);
module_exit(ib_mad_cleanup_module);
+