// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

/*

 * res-pd.c	RDMA tool

 * Authors:     Leon Romanovsky <leonro@mellanox.com>

 */

#include "res.h"

#include <inttypes.h>

static int res_pd_line(struct rd *rd, const char *name, int idx,

		       struct nlattr **nla_line)

{

	uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;

	char *comm = NULL;

	uint32_t ctxn = 0;

	uint32_t pid = 0;

	uint32_t pdn = 0;

	uint64_t users;

	if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||

	    (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&

	     !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {

		return MNL_CB_ERROR;

	}

	if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])

		local_dma_lkey = mnl_attr_get_u32(

			nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);

	users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);

	if (rd_is_filtered_attr(rd, "users", users,

				nla_line[RDMA_NLDEV_ATTR_RES_USECNT]))

		goto out;

	if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])

		unsafe_global_rkey = mnl_attr_get_u32(

			nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);

	if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {

		pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);

		comm = get_task_name(pid);

	}

	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;

	if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])

		pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);

	if (rd_is_filtered_attr(rd, "pdn", pdn,

				nla_line[RDMA_NLDEV_ATTR_RES_PDN]))

		goto out;

	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->json_output)

		jsonw_start_array(rd->jw);

	print_dev(rd, idx, name);

	res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);

	print_key(rd, "local_dma_lkey", local_dma_lkey,

		  nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);

	res_print_uint(rd, "users", users,

		       nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);

	print_key(rd, "unsafe_global_rkey", unsafe_global_rkey,

		  nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);

	res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);

	res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);

	print_comm(rd, comm, nla_line);

	print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);

	newline(rd);

out:	if (nla_line[RDMA_NLDEV_ATTR_RES_PID])

		free(comm);

	return MNL_CB_OK;

}

int res_pd_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_pd_line(rd, name, idx, tb);

}

int res_pd_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_PD])

		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_PD];

	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_pd_line(rd, name, idx, nla_line);

		if (ret != MNL_CB_OK)

			break;

	}

	return ret;

}