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path: root/drivers/infiniband/hw/mthca/mthca_mad.c
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Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_mad.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_mad.c75
1 files changed, 12 insertions, 63 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_mad.c b/drivers/infiniband/hw/mthca/mthca_mad.c
index 9804174f7f3..1229c604c6e 100644
--- a/drivers/infiniband/hw/mthca/mthca_mad.c
+++ b/drivers/infiniband/hw/mthca/mthca_mad.c
@@ -34,6 +34,9 @@
* $Id: mthca_mad.c 1349 2004-12-16 21:09:43Z roland $
*/
+#include <linux/string.h>
+#include <linux/slab.h>
+
#include <rdma/ib_verbs.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>
@@ -46,11 +49,6 @@ enum {
MTHCA_VENDOR_CLASS2 = 0xa
};
-struct mthca_trap_mad {
- struct ib_mad *mad;
- DECLARE_PCI_UNMAP_ADDR(mapping)
-};
-
static void update_sm_ah(struct mthca_dev *dev,
u8 port_num, u16 lid, u8 sl)
{
@@ -116,49 +114,14 @@ static void forward_trap(struct mthca_dev *dev,
struct ib_mad *mad)
{
int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED;
- struct mthca_trap_mad *tmad;
- struct ib_sge gather_list;
- struct ib_send_wr *bad_wr, wr = {
- .opcode = IB_WR_SEND,
- .sg_list = &gather_list,
- .num_sge = 1,
- .send_flags = IB_SEND_SIGNALED,
- .wr = {
- .ud = {
- .remote_qpn = qpn,
- .remote_qkey = qpn ? IB_QP1_QKEY : 0,
- .timeout_ms = 0
- }
- }
- };
+ struct ib_mad_send_buf *send_buf;
struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn];
int ret;
unsigned long flags;
if (agent) {
- tmad = kmalloc(sizeof *tmad, GFP_KERNEL);
- if (!tmad)
- return;
-
- tmad->mad = kmalloc(sizeof *tmad->mad, GFP_KERNEL);
- if (!tmad->mad) {
- kfree(tmad);
- return;
- }
-
- memcpy(tmad->mad, mad, sizeof *mad);
-
- wr.wr.ud.mad_hdr = &tmad->mad->mad_hdr;
- wr.wr_id = (unsigned long) tmad;
-
- gather_list.addr = dma_map_single(agent->device->dma_device,
- tmad->mad,
- sizeof *tmad->mad,
- DMA_TO_DEVICE);
- gather_list.length = sizeof *tmad->mad;
- gather_list.lkey = to_mpd(agent->qp->pd)->ntmr.ibmr.lkey;
- pci_unmap_addr_set(tmad, mapping, gather_list.addr);
-
+ send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR,
+ IB_MGMT_MAD_DATA, GFP_ATOMIC);
/*
* We rely here on the fact that MLX QPs don't use the
* address handle after the send is posted (this is
@@ -166,21 +129,15 @@ static void forward_trap(struct mthca_dev *dev,
* it's OK for our devices).
*/
spin_lock_irqsave(&dev->sm_lock, flags);
- wr.wr.ud.ah = dev->sm_ah[port_num - 1];
- if (wr.wr.ud.ah)
- ret = ib_post_send_mad(agent, &wr, &bad_wr);
+ memcpy(send_buf->mad, mad, sizeof *mad);
+ if ((send_buf->ah = dev->sm_ah[port_num - 1]))
+ ret = ib_post_send_mad(send_buf, NULL);
else
ret = -EINVAL;
spin_unlock_irqrestore(&dev->sm_lock, flags);
- if (ret) {
- dma_unmap_single(agent->device->dma_device,
- pci_unmap_addr(tmad, mapping),
- sizeof *tmad->mad,
- DMA_TO_DEVICE);
- kfree(tmad->mad);
- kfree(tmad);
- }
+ if (ret)
+ ib_free_send_mad(send_buf);
}
}
@@ -267,15 +224,7 @@ int mthca_process_mad(struct ib_device *ibdev,
static void send_handler(struct ib_mad_agent *agent,
struct ib_mad_send_wc *mad_send_wc)
{
- struct mthca_trap_mad *tmad =
- (void *) (unsigned long) mad_send_wc->wr_id;
-
- dma_unmap_single(agent->device->dma_device,
- pci_unmap_addr(tmad, mapping),
- sizeof *tmad->mad,
- DMA_TO_DEVICE);
- kfree(tmad->mad);
- kfree(tmad);
+ ib_free_send_mad(mad_send_wc->send_buf);
}
int mthca_create_agents(struct mthca_dev *dev)