diff options
| author | Ira Weiny <ira.weiny@intel.com> | 2015-06-06 14:38:30 -0400 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-06-12 14:49:17 -0400 |
| commit | c9082e51b6a4ba0272c30027d87e67c6652a725d (patch) | |
| tree | aac79d30829b3602d5713c8dfa3e4b037d191aaa /drivers/infiniband/core/agent.c | |
| parent | 337877a466bb8b0c51f4fa727eeef7d734665632 (diff) | |
| download | linux-c9082e51b6a4ba0272c30027d87e67c6652a725d.tar.bz2 | |
IB/mad: Convert allocations from kmem_cache to kzalloc
This patch implements allocating alternate receive MAD buffers within the MAD
stack. Support for OPA to send/recv variable sized MADs is implemented later.
1) Convert MAD allocations from kmem_cache to kzalloc
kzalloc is more flexible to support devices with different sized MADs
and research and testing showed that the current use of kmem_cache does
not provide performance benefits over kzalloc.
2) Change struct ib_mad_private to use a flex array for the mad data
3) Allocate ib_mad_private based on the size specified by devices in
rdma_max_mad_size.
4) Carry the allocated size in ib_mad_private to be used when processing
ib_mad_private objects.
5) Alter DMA mappings based on the mad_size of ib_mad_private.
6) Replace the use of sizeof and static defines as appropriate
7) Add appropriate casts for the MAD data when calling processing
functions.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/agent.c')
| -rw-r--r-- | drivers/infiniband/core/agent.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c index 4fe1fb6b37cd..6c420736ce93 100644 --- a/drivers/infiniband/core/agent.c +++ b/drivers/infiniband/core/agent.c @@ -78,9 +78,9 @@ ib_get_agent_port(const struct ib_device *device, int port_num) return entry; } -void agent_send_response(const struct ib_mad *mad, const struct ib_grh *grh, +void agent_send_response(const struct ib_mad_hdr *mad_hdr, const struct ib_grh *grh, const struct ib_wc *wc, const struct ib_device *device, - int port_num, int qpn) + int port_num, int qpn, size_t resp_mad_len) { struct ib_agent_port_private *port_priv; struct ib_mad_agent *agent; @@ -107,7 +107,8 @@ void agent_send_response(const struct ib_mad *mad, const struct ib_grh *grh, } send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0, - IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, + IB_MGMT_MAD_HDR, + resp_mad_len - IB_MGMT_MAD_HDR, GFP_KERNEL, IB_MGMT_BASE_VERSION); if (IS_ERR(send_buf)) { @@ -115,7 +116,7 @@ void agent_send_response(const struct ib_mad *mad, const struct ib_grh *grh, goto err1; } - memcpy(send_buf->mad, mad, sizeof *mad); + memcpy(send_buf->mad, mad_hdr, resp_mad_len); send_buf->ah = ah; if (device->node_type == RDMA_NODE_IB_SWITCH) { |