netdev - [PATCH iproute2-next v1 4/4] rdma: Add support to get MR in raw format

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Message-Id: <20200624104012.1450880-5-leon@kernel.org>
Date:   Wed, 24 Jun 2020 13:40:12 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     David Ahern <dsahern@...il.com>
Cc:     Maor Gottlieb <maorg@...lanox.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        linux-netdev <netdev@...r.kernel.org>,
        RDMA mailing list <linux-rdma@...r.kernel.org>
Subject: [PATCH iproute2-next v1 4/4] rdma: Add support to get MR in raw format

From: Maor Gottlieb <maorg@...lanox.com>

Add the required support to print MR data in raw format.
Example:

$rdma res show mr dev mlx5_1 mrn 2 -r -j
[{"ifindex":7,"ifname":"mlx5_1",
"data":[0,4,255,254,0,0,0,0,0,0,0,0,16,28,0,216,...]}]

Signed-off-by: Maor Gottlieb <maorg@...lanox.com>
Signed-off-by: Leon Romanovsky <leonro@...lanox.com>
---
 rdma/res-mr.c | 21 +++++++++++++++++++--
 rdma/res.h    |  2 ++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/rdma/res-mr.c b/rdma/res-mr.c
index c1366035..1bf73f3a 100644
--- a/rdma/res-mr.c
+++ b/rdma/res-mr.c
@@ -7,6 +7,20 @@
 #include "res.h"
 #include <inttypes.h>
 
+static int res_mr_line_raw(struct rd *rd, const char *name, int idx,
+			   struct nlattr **nla_line)
+{
+	if (!nla_line[RDMA_NLDEV_ATTR_RES_RAW])
+		return MNL_CB_ERROR;
+
+	open_json_object(NULL);
+	print_dev(rd, idx, name);
+	print_raw_data(rd, nla_line);
+	newline(rd);
+
+	return MNL_CB_OK;
+}
+
 static int res_mr_line(struct rd *rd, const char *name, int idx,
 		       struct nlattr **nla_line)
 {
@@ -69,6 +83,7 @@ static int res_mr_line(struct rd *rd, const char *name, int idx,
 	print_comm(rd, comm, nla_line);
 
 	print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
+	print_raw_data(rd, nla_line);
 	newline(rd);
 
 out:
@@ -91,7 +106,8 @@ int res_mr_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
 	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 
-	return res_mr_line(rd, name, idx, tb);
+	return (rd->show_raw) ? res_mr_line_raw(rd, name, idx, tb) :
+		res_mr_line(rd, name, idx, tb);
 }
 
 int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
@@ -119,7 +135,8 @@ int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
 		if (ret != MNL_CB_OK)
 			break;
 
-		ret = res_mr_line(rd, name, idx, nla_line);
+		ret = (rd->show_raw) ? res_mr_line_raw(rd, name, idx, nla_line) :
+			res_mr_line(rd, name, idx, nla_line);
 		if (ret != MNL_CB_OK)
 			break;
 	}
diff --git a/rdma/res.h b/rdma/res.h
index bb0f19e0..70ce5758 100644
--- a/rdma/res.h
+++ b/rdma/res.h
@@ -33,6 +33,8 @@ static inline uint32_t res_get_command(uint32_t command, struct rd *rd)
 		return RDMA_NLDEV_CMD_RES_QP_GET_RAW;
 	case RDMA_NLDEV_CMD_RES_CQ_GET:
 		return RDMA_NLDEV_CMD_RES_CQ_GET_RAW;
+	case RDMA_NLDEV_CMD_RES_MR_GET:
+		return RDMA_NLDEV_CMD_RES_MR_GET_RAW;
 	default:
 		return command;
 	}
-- 
2.26.2