* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
- *
- * $Id: mad_rmpp.c 1921 2005-03-02 22:58:44Z sean.hefty $
*/
-#include <linux/dma-mapping.h>
-
#include "mad_priv.h"
#include "mad_rmpp.h"
struct mad_rmpp_recv {
struct ib_mad_agent_private *agent;
struct list_head list;
- struct work_struct timeout_work;
- struct work_struct cleanup_work;
+ struct delayed_work timeout_work;
+ struct delayed_work cleanup_work;
struct completion comp;
enum rmpp_state state;
spinlock_t lock;
int last_ack;
int seg_num;
int newwin;
+ int repwin;
__be64 tid;
u32 src_qp;
hdr_len, 0, GFP_KERNEL);
if (IS_ERR(msg))
ib_destroy_ah(ah);
- else
+ else {
msg->ah = ah;
+ msg->context[0] = ah;
+ }
return msg;
}
-void ib_rmpp_send_handler(struct ib_mad_send_wc *mad_send_wc)
+static void ack_ds_ack(struct ib_mad_agent_private *agent,
+ struct ib_mad_recv_wc *recv_wc)
{
- struct ib_rmpp_mad *rmpp_mad = mad_send_wc->send_buf->mad;
+ struct ib_mad_send_buf *msg;
+ struct ib_rmpp_mad *rmpp_mad;
+ int ret;
- if (rmpp_mad->rmpp_hdr.rmpp_type != IB_MGMT_RMPP_TYPE_ACK)
+ msg = alloc_response_msg(&agent->agent, recv_wc);
+ if (IS_ERR(msg))
+ return;
+
+ rmpp_mad = msg->mad;
+ memcpy(rmpp_mad, recv_wc->recv_buf.mad, msg->hdr_len);
+
+ rmpp_mad->mad_hdr.method ^= IB_MGMT_METHOD_RESP;
+ ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE);
+ rmpp_mad->rmpp_hdr.seg_num = 0;
+ rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(1);
+
+ ret = ib_post_send_mad(msg, NULL);
+ if (ret) {
+ ib_destroy_ah(msg->ah);
+ ib_free_send_mad(msg);
+ }
+}
+
+void ib_rmpp_send_handler(struct ib_mad_send_wc *mad_send_wc)
+{
+ if (mad_send_wc->send_buf->context[0] == mad_send_wc->send_buf->ah)
ib_destroy_ah(mad_send_wc->send_buf->ah);
ib_free_send_mad(mad_send_wc->send_buf);
}
}
}
-static void recv_timeout_handler(void *data)
+static void recv_timeout_handler(struct work_struct *work)
{
- struct mad_rmpp_recv *rmpp_recv = data;
+ struct mad_rmpp_recv *rmpp_recv =
+ container_of(work, struct mad_rmpp_recv, timeout_work.work);
struct ib_mad_recv_wc *rmpp_wc;
unsigned long flags;
ib_free_recv_mad(rmpp_wc);
}
-static void recv_cleanup_handler(void *data)
+static void recv_cleanup_handler(struct work_struct *work)
{
- struct mad_rmpp_recv *rmpp_recv = data;
+ struct mad_rmpp_recv *rmpp_recv =
+ container_of(work, struct mad_rmpp_recv, cleanup_work.work);
unsigned long flags;
spin_lock_irqsave(&rmpp_recv->agent->lock, flags);
rmpp_recv->agent = agent;
init_completion(&rmpp_recv->comp);
- INIT_WORK(&rmpp_recv->timeout_work, recv_timeout_handler, rmpp_recv);
- INIT_WORK(&rmpp_recv->cleanup_work, recv_cleanup_handler, rmpp_recv);
+ INIT_DELAYED_WORK(&rmpp_recv->timeout_work, recv_timeout_handler);
+ INIT_DELAYED_WORK(&rmpp_recv->cleanup_work, recv_cleanup_handler);
spin_lock_init(&rmpp_recv->lock);
rmpp_recv->state = RMPP_STATE_ACTIVE;
atomic_set(&rmpp_recv->refcount, 1);
rmpp_recv->newwin = 1;
rmpp_recv->seg_num = 1;
rmpp_recv->last_ack = 0;
+ rmpp_recv->repwin = 1;
mad_hdr = &mad_recv_wc->recv_buf.mad->mad_hdr;
rmpp_recv->tid = mad_hdr->tid;
static struct ib_mad_recv_buf * find_seg_location(struct list_head *rmpp_list,
int seg_num)
{
- struct ib_mad_recv_buf *seg_buf;
+ struct ib_mad_recv_buf *seg_buf;
int cur_seg_num;
list_for_each_entry_reverse(seg_buf, rmpp_list, list) {
break;
}
+static void process_ds_ack(struct ib_mad_agent_private *agent,
+ struct ib_mad_recv_wc *mad_recv_wc, int newwin)
+{
+ struct mad_rmpp_recv *rmpp_recv;
+
+ rmpp_recv = find_rmpp_recv(agent, mad_recv_wc);
+ if (rmpp_recv && rmpp_recv->state == RMPP_STATE_COMPLETE)
+ rmpp_recv->repwin = newwin;
+}
+
static void process_rmpp_ack(struct ib_mad_agent_private *agent,
struct ib_mad_recv_wc *mad_recv_wc)
{
spin_lock_irqsave(&agent->lock, flags);
mad_send_wr = ib_find_send_mad(agent, mad_recv_wc);
- if (!mad_send_wr)
- goto out; /* Unmatched ACK */
+ if (!mad_send_wr) {
+ if (!seg_num)
+ process_ds_ack(agent, mad_recv_wc, newwin);
+ goto out; /* Unmatched or DS RMPP ACK */
+ }
+
+ if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) &&
+ (mad_send_wr->timeout)) {
+ spin_unlock_irqrestore(&agent->lock, flags);
+ ack_ds_ack(agent, mad_recv_wc);
+ return; /* Repeated ACK for DS RMPP transaction */
+ }
if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) ||
(!mad_send_wr->timeout) || (mad_send_wr->status != IB_WC_SUCCESS))
if (seg_num > mad_send_wr->last_ack) {
adjust_last_ack(mad_send_wr, seg_num);
- mad_send_wr->retries = mad_send_wr->send_buf.retries;
+ mad_send_wr->retries_left = mad_send_wr->max_retries;
}
mad_send_wr->newwin = newwin;
if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) {
if (mad_send_wr->refcount == 1)
ib_reset_mad_timeout(mad_send_wr,
mad_send_wr->send_buf.timeout_ms);
+ spin_unlock_irqrestore(&agent->lock, flags);
+ ack_ds_ack(agent, mad_recv_wc);
+ return;
} else if (mad_send_wr->refcount == 1 &&
mad_send_wr->seg_num < mad_send_wr->newwin &&
mad_send_wr->seg_num < mad_send_wr->send_buf.seg_count) {
goto out;
mad_send_wr->refcount++;
- list_del(&mad_send_wr->agent_list);
- list_add_tail(&mad_send_wr->agent_list,
+ list_move_tail(&mad_send_wr->agent_list,
&mad_send_wr->mad_agent_priv->send_list);
}
out:
return NULL;
}
+static int init_newwin(struct ib_mad_send_wr_private *mad_send_wr)
+{
+ struct ib_mad_agent_private *agent = mad_send_wr->mad_agent_priv;
+ struct ib_mad_hdr *mad_hdr = mad_send_wr->send_buf.mad;
+ struct mad_rmpp_recv *rmpp_recv;
+ struct ib_ah_attr ah_attr;
+ unsigned long flags;
+ int newwin = 1;
+
+ if (!(mad_hdr->method & IB_MGMT_METHOD_RESP))
+ goto out;
+
+ spin_lock_irqsave(&agent->lock, flags);
+ list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) {
+ if (rmpp_recv->tid != mad_hdr->tid ||
+ rmpp_recv->mgmt_class != mad_hdr->mgmt_class ||
+ rmpp_recv->class_version != mad_hdr->class_version ||
+ (rmpp_recv->method & IB_MGMT_METHOD_RESP))
+ continue;
+
+ if (ib_query_ah(mad_send_wr->send_buf.ah, &ah_attr))
+ continue;
+
+ if (rmpp_recv->slid == ah_attr.dlid) {
+ newwin = rmpp_recv->repwin;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&agent->lock, flags);
+out:
+ return newwin;
+}
+
int ib_send_rmpp_mad(struct ib_mad_send_wr_private *mad_send_wr)
{
struct ib_rmpp_mad *rmpp_mad;
return IB_RMPP_RESULT_INTERNAL;
}
- mad_send_wr->newwin = 1;
+ mad_send_wr->newwin = init_newwin(mad_send_wr);
/* We need to wait for the final ACK even if there isn't a response */
mad_send_wr->refcount += (mad_send_wr->timeout == 0);
git.openpandora.org / pandora-kernel.git / blobdiff