diff options
author | Ira Weiny <ira.weiny@intel.com> | 2015-06-06 21:38:33 +0300 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2015-06-12 21:49:17 +0300 |
commit | 548ead17442f13bdaa679e222ee2fd186e32301d (patch) | |
tree | 87d897e6c158bc60d49e84912a25d676100430b5 /drivers/infiniband | |
parent | 65995fee842fd9f1427b62be24053846d9c32102 (diff) | |
download | linux-548ead17442f13bdaa679e222ee2fd186e32301d.tar.xz |
IB/mad: Add partial Intel OPA MAD support
This patch is the first of 3 which adds processing of OPA MADs
1) Add Intel Omni-Path Architecture defines
2) Increase max management version to accommodate OPA
3) update ib_create_send_mad
If the device supports OPA MADs and the MAD being sent is the OPA base
version alter the MAD size and sg lengths as appropriate
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r-- | drivers/infiniband/core/mad.c | 42 | ||||
-rw-r--r-- | drivers/infiniband/core/mad_priv.h | 2 | ||||
-rw-r--r-- | drivers/infiniband/core/mad_rmpp.c | 7 |
3 files changed, 37 insertions, 14 deletions
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index aa4f8d4a4eba..779097033935 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -874,11 +874,11 @@ out: return ret; } -static int get_pad_size(int hdr_len, int data_len) +static int get_pad_size(int hdr_len, int data_len, size_t mad_size) { int seg_size, pad; - seg_size = sizeof(struct ib_mad) - hdr_len; + seg_size = mad_size - hdr_len; if (data_len && seg_size) { pad = seg_size - data_len % seg_size; return pad == seg_size ? 0 : pad; @@ -897,14 +897,15 @@ static void free_send_rmpp_list(struct ib_mad_send_wr_private *mad_send_wr) } static int alloc_send_rmpp_list(struct ib_mad_send_wr_private *send_wr, - gfp_t gfp_mask) + size_t mad_size, gfp_t gfp_mask) { struct ib_mad_send_buf *send_buf = &send_wr->send_buf; struct ib_rmpp_mad *rmpp_mad = send_buf->mad; struct ib_rmpp_segment *seg = NULL; int left, seg_size, pad; - send_buf->seg_size = sizeof(struct ib_mad) - send_buf->hdr_len; + send_buf->seg_size = mad_size - send_buf->hdr_len; + send_buf->seg_rmpp_size = mad_size - IB_MGMT_RMPP_HDR; seg_size = send_buf->seg_size; pad = send_wr->pad; @@ -954,20 +955,30 @@ struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, struct ib_mad_send_wr_private *mad_send_wr; int pad, message_size, ret, size; void *buf; + size_t mad_size; + bool opa; mad_agent_priv = container_of(mad_agent, struct ib_mad_agent_private, agent); - pad = get_pad_size(hdr_len, data_len); + + opa = rdma_cap_opa_mad(mad_agent->device, mad_agent->port_num); + + if (opa && base_version == OPA_MGMT_BASE_VERSION) + mad_size = sizeof(struct opa_mad); + else + mad_size = sizeof(struct ib_mad); + + pad = get_pad_size(hdr_len, data_len, mad_size); message_size = hdr_len + data_len + pad; if (ib_mad_kernel_rmpp_agent(mad_agent)) { - if (!rmpp_active && message_size > sizeof(struct ib_mad)) + if (!rmpp_active && message_size > mad_size) return ERR_PTR(-EINVAL); } else - if (rmpp_active || message_size > sizeof(struct ib_mad)) + if (rmpp_active || message_size > mad_size) return ERR_PTR(-EINVAL); - size = rmpp_active ? hdr_len : sizeof(struct ib_mad); + size = rmpp_active ? hdr_len : mad_size; buf = kzalloc(sizeof *mad_send_wr + size, gfp_mask); if (!buf) return ERR_PTR(-ENOMEM); @@ -982,7 +993,14 @@ struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, mad_send_wr->mad_agent_priv = mad_agent_priv; mad_send_wr->sg_list[0].length = hdr_len; mad_send_wr->sg_list[0].lkey = mad_agent->mr->lkey; - mad_send_wr->sg_list[1].length = sizeof(struct ib_mad) - hdr_len; + + /* OPA MADs don't have to be the full 2048 bytes */ + if (opa && base_version == OPA_MGMT_BASE_VERSION && + data_len < mad_size - hdr_len) + mad_send_wr->sg_list[1].length = data_len; + else + mad_send_wr->sg_list[1].length = mad_size - hdr_len; + mad_send_wr->sg_list[1].lkey = mad_agent->mr->lkey; mad_send_wr->send_wr.wr_id = (unsigned long) mad_send_wr; @@ -995,7 +1013,7 @@ struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, mad_send_wr->send_wr.wr.ud.pkey_index = pkey_index; if (rmpp_active) { - ret = alloc_send_rmpp_list(mad_send_wr, gfp_mask); + ret = alloc_send_rmpp_list(mad_send_wr, mad_size, gfp_mask); if (ret) { kfree(buf); return ERR_PTR(ret); @@ -2976,6 +2994,10 @@ static int ib_mad_port_open(struct ib_device *device, if (WARN_ON(rdma_max_mad_size(device, port_num) < IB_MGMT_MAD_SIZE)) return -EFAULT; + if (WARN_ON(rdma_cap_opa_mad(device, port_num) && + rdma_max_mad_size(device, port_num) < OPA_MGMT_MAD_SIZE)) + return -EFAULT; + /* Create new device info */ port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL); if (!port_priv) { diff --git a/drivers/infiniband/core/mad_priv.h b/drivers/infiniband/core/mad_priv.h index 44c0a7842a70..e8852be0c3f8 100644 --- a/drivers/infiniband/core/mad_priv.h +++ b/drivers/infiniband/core/mad_priv.h @@ -56,7 +56,7 @@ /* Registration table sizes */ #define MAX_MGMT_CLASS 80 -#define MAX_MGMT_VERSION 8 +#define MAX_MGMT_VERSION 0x83 #define MAX_MGMT_OUI 8 #define MAX_MGMT_VENDOR_RANGE2 (IB_MGMT_CLASS_VENDOR_RANGE2_END - \ IB_MGMT_CLASS_VENDOR_RANGE2_START + 1) diff --git a/drivers/infiniband/core/mad_rmpp.c b/drivers/infiniband/core/mad_rmpp.c index 2379e2dfa400..f4e4fe609e95 100644 --- a/drivers/infiniband/core/mad_rmpp.c +++ b/drivers/infiniband/core/mad_rmpp.c @@ -572,13 +572,14 @@ static int send_next_seg(struct ib_mad_send_wr_private *mad_send_wr) if (mad_send_wr->seg_num == 1) { rmpp_mad->rmpp_hdr.rmpp_rtime_flags |= IB_MGMT_RMPP_FLAG_FIRST; - paylen = mad_send_wr->send_buf.seg_count * IB_MGMT_RMPP_DATA - - mad_send_wr->pad; + paylen = (mad_send_wr->send_buf.seg_count * + mad_send_wr->send_buf.seg_rmpp_size) - + mad_send_wr->pad; } if (mad_send_wr->seg_num == mad_send_wr->send_buf.seg_count) { rmpp_mad->rmpp_hdr.rmpp_rtime_flags |= IB_MGMT_RMPP_FLAG_LAST; - paylen = IB_MGMT_RMPP_DATA - mad_send_wr->pad; + paylen = mad_send_wr->send_buf.seg_rmpp_size - mad_send_wr->pad; } rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(paylen); |