rdma/res-qp.c

// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
 * res-qp.c	RDMA tool
 * Authors:     Leon Romanovsky <leonro@mellanox.com>
 */

#include "res.h"
#include <inttypes.h>

static const char *path_mig_to_str(uint8_t idx)
{
	static const char *const path_mig_str[] = { "MIGRATED", "REARM",
						    "ARMED" };

	if (idx < ARRAY_SIZE(path_mig_str))
		return path_mig_str[idx];
	return "UNKNOWN";
}

static const char *qp_states_to_str(uint8_t idx)
{
	static const char *const qp_states_str[] = { "RESET", "INIT", "RTR",
						     "RTS",   "SQD",  "SQE",
						     "ERR" };

	if (idx < ARRAY_SIZE(qp_states_str))
		return qp_states_str[idx];
	return "UNKNOWN";
}

static void print_rqpn(struct rd *rd, uint32_t val, struct nlattr **nla_line)
{
	if (!nla_line[RDMA_NLDEV_ATTR_RES_RQPN])
		return;

	if (rd->json_output)
		jsonw_uint_field(rd->jw, "rqpn", val);
	else
		pr_out("rqpn %u ", val);
}

static void print_type(struct rd *rd, uint32_t val)
{
	if (rd->json_output)
		jsonw_string_field(rd->jw, "type", qp_types_to_str(val));
	else
		pr_out("type %s ", qp_types_to_str(val));
}

static void print_state(struct rd *rd, uint32_t val)
{
	if (rd->json_output)
		jsonw_string_field(rd->jw, "state", qp_states_to_str(val));
	else
		pr_out("state %s ", qp_states_to_str(val));
}

static void print_rqpsn(struct rd *rd, uint32_t val, struct nlattr **nla_line)
{
	if (!nla_line[RDMA_NLDEV_ATTR_RES_RQ_PSN])
		return;

	if (rd->json_output)
		jsonw_uint_field(rd->jw, "rq-psn", val);
	else
		pr_out("rq-psn %u ", val);
}

static void print_pathmig(struct rd *rd, uint32_t val, struct nlattr **nla_line)
{
	if (!nla_line[RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE])
		return;

	if (rd->json_output)
		jsonw_string_field(rd->jw, "path-mig-state",
				   path_mig_to_str(val));
	else
		pr_out("path-mig-state %s ", path_mig_to_str(val));
}

static int res_qp_line(struct rd *rd, const char *name, int idx,
		       struct nlattr **nla_line)
{
	uint32_t lqpn, rqpn = 0, rq_psn = 0, sq_psn;
	uint8_t type, state, path_mig_state = 0;
	uint32_t port = 0, pid = 0;
	uint32_t pdn = 0;
	char *comm = NULL;

	if (!nla_line[RDMA_NLDEV_ATTR_RES_LQPN] ||
	    !nla_line[RDMA_NLDEV_ATTR_RES_SQ_PSN] ||
	    !nla_line[RDMA_NLDEV_ATTR_RES_TYPE] ||
	    !nla_line[RDMA_NLDEV_ATTR_RES_STATE] ||
	    (!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_PORT_INDEX])
		port = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_PORT_INDEX]);

	if (port != rd->port_idx)
		goto out;

	lqpn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_LQPN]);
	if (rd_is_filtered_attr(rd, "lqpn", lqpn,
				nla_line[RDMA_NLDEV_ATTR_RES_LQPN]))
		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_RQPN])
		rqpn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_RQPN]);
	if (rd_is_filtered_attr(rd, "rqpn", rqpn,
				nla_line[RDMA_NLDEV_ATTR_RES_RQPN]))
		goto out;

	if (nla_line[RDMA_NLDEV_ATTR_RES_RQ_PSN])
		rq_psn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_RQ_PSN]);
	if (rd_is_filtered_attr(rd, "rq-psn", rq_psn,
				nla_line[RDMA_NLDEV_ATTR_RES_RQ_PSN]))
		goto out;

	sq_psn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_SQ_PSN]);
	if (rd_is_filtered_attr(rd, "sq-psn", sq_psn,
				nla_line[RDMA_NLDEV_ATTR_RES_SQ_PSN]))
		goto out;

	if (nla_line[RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE])
		path_mig_state = mnl_attr_get_u8(
			nla_line[RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE]);
	if (rd_is_string_filtered_attr(
		    rd, "path-mig-state", path_mig_to_str(path_mig_state),
		    nla_line[RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE]))
		goto out;

	type = mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_TYPE]);
	if (rd_is_string_filtered_attr(rd, "type", qp_types_to_str(type),
				       nla_line[RDMA_NLDEV_ATTR_RES_TYPE]))
		goto out;

	state = mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_STATE]);
	if (rd_is_string_filtered_attr(rd, "state", qp_states_to_str(state),
				       nla_line[RDMA_NLDEV_ATTR_RES_STATE]))
		goto out;

	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_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_link(rd, idx, name, port, nla_line);

	res_print_uint(rd, "lqpn", lqpn, nla_line[RDMA_NLDEV_ATTR_RES_LQPN]);
	print_rqpn(rd, rqpn, nla_line);

	print_type(rd, type);
	print_state(rd, state);

	print_rqpsn(rd, rq_psn, nla_line);
	res_print_uint(rd, "sq-psn", sq_psn,
		       nla_line[RDMA_NLDEV_ATTR_RES_SQ_PSN]);

	print_pathmig(rd, path_mig_state, nla_line);
	res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
	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_qp_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_qp_line(rd, name, idx, tb);
}

int res_qp_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_QP])
		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_QP];

	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_qp_line(rd, name, idx, nla_line);
		if (ret != MNL_CB_OK)
			break;
	}
	return ret;
}