1 files changed, 103 insertions, 0 deletions
diff --git a/rdma/res-ctx.c b/rdma/res-ctx.c
new file mode 100644
index 0000000..235c837
--- /dev/null
+++ b/rdma/res-ctx.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/*
+ * res-ctx.c	RDMA tool
+ * Authors:     Neta Ostrovsky <netao@nvidia.com>
+ */
+
+#include "res.h"
+#include <inttypes.h>
+
+static int res_ctx_line(struct rd *rd, const char *name, int idx,
+			struct nlattr **nla_line)
+{
+	char *comm = NULL;
+	uint32_t ctxn = 0;
+	uint32_t pid = 0;
+	SPRINT_BUF(b);
+
+	if (!nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
+		return MNL_CB_ERROR;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
+		pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
+		if (!get_task_name(pid, b, sizeof(b)))
+			comm = b;
+	} else if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]) {
+		/* discard const from mnl_attr_get_str */
+		comm = (char *)mnl_attr_get_str(
+			nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
+	}
+
+	if (rd_is_filtered_attr(rd, "pid", pid,
+				nla_line[RDMA_NLDEV_ATTR_RES_PID]))
+		goto out;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
+		ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
+
+	if (rd_is_filtered_attr(rd, "ctxn", ctxn,
+				nla_line[RDMA_NLDEV_ATTR_RES_CTXN]))
+		goto out;
+
+	open_json_object(NULL);
+	print_dev(idx, name);
+	res_print_u32("ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
+	res_print_u32("pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
+	print_comm(comm, nla_line);
+
+	print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
+	close_json_object();
+	newline();
+
+out:
+	return MNL_CB_OK;
+}
+
+int res_ctx_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
+	struct rd *rd = data;
+	const char *name;
+	uint32_t idx;
+
+	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
+	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
+		return MNL_CB_ERROR;
+
+	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
+	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
+
+	return res_ctx_line(rd, name, idx, tb);
+}
+
+int res_ctx_parse_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
+	struct nlattr *nla_table, *nla_entry;
+	struct rd *rd = data;
+	int ret = MNL_CB_OK;
+	const char *name;
+	uint32_t idx;
+
+	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
+	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
+	    !tb[RDMA_NLDEV_ATTR_RES_CTX])
+		return MNL_CB_ERROR;
+
+	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
+	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
+	nla_table = tb[RDMA_NLDEV_ATTR_RES_CTX];
+
+	mnl_attr_for_each_nested(nla_entry, nla_table) {
+		struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
+
+		ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
+		if (ret != MNL_CB_OK)
+			break;
+
+		ret = res_ctx_line(rd, name, idx, nla_line);
+		if (ret != MNL_CB_OK)
+			break;
+	}
+	return ret;
+}