From: Parav Pandit <parav@mellanox.com>
Date: Thu, 17 Aug 2017 15:50:33 +0300
Subject: IB/uverbs: Introduce and use helper functions to copy ah attributes
Patch-mainline: v4.14-rc1
Git-commit: 89caa0538ecf2114e1badbb1e75120d25bec985e
References: bsc#1046306 FATE#322942
This patch introduces two helper functions to copy ah attributes
from uverbs to internal ib_ah_attr structure and the other way
during modify qp and query qp respectively.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/core/uverbs_cmd.c | 127 ++++++++++++++---------------------
1 file changed, 51 insertions(+), 76 deletions(-)
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1820,6 +1820,28 @@ err_put:
return ret;
}
+static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
+ struct rdma_ah_attr *rdma_attr)
+{
+ const struct ib_global_route *grh;
+
+ uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
+ uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
+ uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
+ uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
+ uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
+ IB_AH_GRH);
+ if (uverb_attr->is_global) {
+ grh = rdma_ah_read_grh(rdma_attr);
+ memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
+ uverb_attr->flow_label = grh->flow_label;
+ uverb_attr->sgid_index = grh->sgid_index;
+ uverb_attr->hop_limit = grh->hop_limit;
+ uverb_attr->traffic_class = grh->traffic_class;
+ }
+ uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
+}
+
ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
struct ib_device *ib_dev,
const char __user *buf, int in_len,
@@ -1830,7 +1852,6 @@ ssize_t ib_uverbs_query_qp(struct ib_uve
struct ib_qp *qp;
struct ib_qp_attr *attr;
struct ib_qp_init_attr *init_attr;
- const struct ib_global_route *grh;
int ret;
if (copy_from_user(&cmd, buf, sizeof cmd))
@@ -1880,39 +1901,8 @@ ssize_t ib_uverbs_query_qp(struct ib_uve
resp.alt_port_num = attr->alt_port_num;
resp.alt_timeout = attr->alt_timeout;
- resp.dest.dlid = rdma_ah_get_dlid(&attr->ah_attr);
- resp.dest.sl = rdma_ah_get_sl(&attr->ah_attr);
- resp.dest.src_path_bits = rdma_ah_get_path_bits(&attr->ah_attr);
- resp.dest.static_rate = rdma_ah_get_static_rate(&attr->ah_attr);
- resp.dest.is_global = !!(rdma_ah_get_ah_flags(&attr->ah_attr) &
- IB_AH_GRH);
- if (resp.dest.is_global) {
- grh = rdma_ah_read_grh(&attr->ah_attr);
- memcpy(resp.dest.dgid, grh->dgid.raw, 16);
- resp.dest.flow_label = grh->flow_label;
- resp.dest.sgid_index = grh->sgid_index;
- resp.dest.hop_limit = grh->hop_limit;
- resp.dest.traffic_class = grh->traffic_class;
- }
- resp.dest.port_num = rdma_ah_get_port_num(&attr->ah_attr);
-
- resp.alt_dest.dlid = rdma_ah_get_dlid(&attr->alt_ah_attr);
- resp.alt_dest.sl = rdma_ah_get_sl(&attr->alt_ah_attr);
- resp.alt_dest.src_path_bits = rdma_ah_get_path_bits(&attr->alt_ah_attr);
- resp.alt_dest.static_rate
- = rdma_ah_get_static_rate(&attr->alt_ah_attr);
- resp.alt_dest.is_global
- = !!(rdma_ah_get_ah_flags(&attr->alt_ah_attr) &
- IB_AH_GRH);
- if (resp.alt_dest.is_global) {
- grh = rdma_ah_read_grh(&attr->alt_ah_attr);
- memcpy(resp.alt_dest.dgid, grh->dgid.raw, 16);
- resp.alt_dest.flow_label = grh->flow_label;
- resp.alt_dest.sgid_index = grh->sgid_index;
- resp.alt_dest.hop_limit = grh->hop_limit;
- resp.alt_dest.traffic_class = grh->traffic_class;
- }
- resp.alt_dest.port_num = rdma_ah_get_port_num(&attr->alt_ah_attr);
+ copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
+ copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
resp.max_send_wr = init_attr->cap.max_send_wr;
resp.max_recv_wr = init_attr->cap.max_recv_wr;
@@ -1946,6 +1936,29 @@ static int modify_qp_mask(enum ib_qp_typ
}
}
+static void copy_ah_attr_from_uverbs(struct ib_device *dev,
+ struct rdma_ah_attr *rdma_attr,
+ struct ib_uverbs_qp_dest *uverb_attr)
+{
+ rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
+ if (uverb_attr->is_global) {
+ rdma_ah_set_grh(rdma_attr, NULL,
+ uverb_attr->flow_label,
+ uverb_attr->sgid_index,
+ uverb_attr->hop_limit,
+ uverb_attr->traffic_class);
+ rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
+ } else {
+ rdma_ah_set_ah_flags(rdma_attr, 0);
+ }
+ rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
+ rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
+ rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
+ rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
+ rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
+ rdma_ah_set_make_grd(rdma_attr, false);
+}
+
static int modify_qp(struct ib_uverbs_file *file,
struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata)
{
@@ -1993,50 +2006,12 @@ static int modify_qp(struct ib_uverbs_fi
attr->rate_limit = cmd->rate_limit;
if (cmd->base.attr_mask & IB_QP_AV)
- attr->ah_attr.type = rdma_ah_find_type(qp->device,
- cmd->base.dest.port_num);
- if (cmd->base.dest.is_global) {
- rdma_ah_set_grh(&attr->ah_attr, NULL,
- cmd->base.dest.flow_label,
- cmd->base.dest.sgid_index,
- cmd->base.dest.hop_limit,
- cmd->base.dest.traffic_class);
- rdma_ah_set_dgid_raw(&attr->ah_attr, cmd->base.dest.dgid);
- } else {
- rdma_ah_set_ah_flags(&attr->ah_attr, 0);
- }
- rdma_ah_set_dlid(&attr->ah_attr, cmd->base.dest.dlid);
- rdma_ah_set_sl(&attr->ah_attr, cmd->base.dest.sl);
- rdma_ah_set_path_bits(&attr->ah_attr, cmd->base.dest.src_path_bits);
- rdma_ah_set_static_rate(&attr->ah_attr, cmd->base.dest.static_rate);
- rdma_ah_set_port_num(&attr->ah_attr,
- cmd->base.dest.port_num);
- rdma_ah_set_make_grd(&attr->ah_attr, false);
+ copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
+ &cmd->base.dest);
if (cmd->base.attr_mask & IB_QP_ALT_PATH)
- attr->alt_ah_attr.type =
- rdma_ah_find_type(qp->device, cmd->base.dest.port_num);
- if (cmd->base.alt_dest.is_global) {
- rdma_ah_set_grh(&attr->alt_ah_attr, NULL,
- cmd->base.alt_dest.flow_label,
- cmd->base.alt_dest.sgid_index,
- cmd->base.alt_dest.hop_limit,
- cmd->base.alt_dest.traffic_class);
- rdma_ah_set_dgid_raw(&attr->alt_ah_attr,
- cmd->base.alt_dest.dgid);
- } else {
- rdma_ah_set_ah_flags(&attr->alt_ah_attr, 0);
- }
-
- rdma_ah_set_dlid(&attr->alt_ah_attr, cmd->base.alt_dest.dlid);
- rdma_ah_set_sl(&attr->alt_ah_attr, cmd->base.alt_dest.sl);
- rdma_ah_set_path_bits(&attr->alt_ah_attr,
- cmd->base.alt_dest.src_path_bits);
- rdma_ah_set_static_rate(&attr->alt_ah_attr,
- cmd->base.alt_dest.static_rate);
- rdma_ah_set_port_num(&attr->alt_ah_attr,
- cmd->base.alt_dest.port_num);
- rdma_ah_set_make_grd(&attr->alt_ah_attr, false);
+ copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
+ &cmd->base.alt_dest);
ret = ib_modify_qp_with_udata(qp, attr,
modify_qp_mask(qp->qp_type,