Blame rdma/res-cq.c

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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/*
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 * res-cq.c	RDMA tool
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 * Authors:     Leon Romanovsky <leonro@mellanox.com>
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 */
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#include "res.h"
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#include <inttypes.h>
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static const char *poll_ctx_to_str(uint8_t idx)
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{
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	static const char * const cm_id_states_str[] = {
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		"DIRECT", "SOFTIRQ", "WORKQUEUE", "UNBOUND_WORKQUEUE"};
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	if (idx < ARRAY_SIZE(cm_id_states_str))
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		return cm_id_states_str[idx];
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	return "UNKNOWN";
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}
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static void print_poll_ctx(struct rd *rd, uint8_t poll_ctx, struct nlattr *attr)
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{
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	if (!attr)
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		return;
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	print_color_string(PRINT_ANY, COLOR_NONE, "poll-ctx", "poll-ctx %s ",
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			   poll_ctx_to_str(poll_ctx));
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}
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static void print_cq_dim_setting(struct rd *rd, struct nlattr *attr)
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{
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	uint8_t dim_setting;
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	if (!attr)
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		return;
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	dim_setting = mnl_attr_get_u8(attr);
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	if (dim_setting > 1)
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		return;
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	print_on_off(rd, "adaptive-moderation", dim_setting);
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}
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static int res_cq_line_raw(struct rd *rd, const char *name, int idx,
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			   struct nlattr **nla_line)
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{
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	if (!nla_line[RDMA_NLDEV_ATTR_RES_RAW])
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		return MNL_CB_ERROR;
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	open_json_object(NULL);
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	print_dev(rd, idx, name);
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	print_raw_data(rd, nla_line);
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	newline(rd);
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	return MNL_CB_OK;
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}
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static int res_cq_line(struct rd *rd, const char *name, int idx,
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		       struct nlattr **nla_line)
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{
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	char *comm = NULL;
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	uint32_t pid = 0;
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	uint8_t poll_ctx = 0;
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	uint32_t ctxn = 0;
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	uint32_t cqn = 0;
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	uint64_t users;
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	uint32_t cqe;
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	if (!nla_line[RDMA_NLDEV_ATTR_RES_CQE] ||
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	    !nla_line[RDMA_NLDEV_ATTR_RES_USECNT])
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		return MNL_CB_ERROR;
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	cqe = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
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	users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
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	if (rd_is_filtered_attr(rd, "users", users,
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				nla_line[RDMA_NLDEV_ATTR_RES_USECNT]))
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		goto out;
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	if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX])
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		poll_ctx =
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			mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
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	if (rd_is_string_filtered_attr(rd, "poll-ctx",
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				       poll_ctx_to_str(poll_ctx),
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				       nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]))
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		goto out;
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	if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
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		pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
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		comm = get_task_name(pid);
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	}
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	if (rd_is_filtered_attr(rd, "pid", pid,
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				nla_line[RDMA_NLDEV_ATTR_RES_PID]))
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		goto out;
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	if (nla_line[RDMA_NLDEV_ATTR_RES_CQN])
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		cqn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
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	if (rd_is_filtered_attr(rd, "cqn", cqn,
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				nla_line[RDMA_NLDEV_ATTR_RES_CQN]))
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		goto out;
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	if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
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		ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
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	if (rd_is_filtered_attr(rd, "ctxn", ctxn,
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				nla_line[RDMA_NLDEV_ATTR_RES_CTXN]))
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		goto out;
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	if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
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		/* discard const from mnl_attr_get_str */
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		comm = (char *)mnl_attr_get_str(
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			nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
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	open_json_object(NULL);
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	print_dev(rd, idx, name);
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	res_print_uint(rd, "cqn", cqn, nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
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	res_print_uint(rd, "cqe", cqe, nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
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	res_print_uint(rd, "users", users,
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		       nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
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	print_poll_ctx(rd, poll_ctx, nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
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	print_cq_dim_setting(rd, nla_line[RDMA_NLDEV_ATTR_DEV_DIM]);
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	res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
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	res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
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	print_comm(rd, comm, nla_line);
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	print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
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	newline(rd);
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out:	if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
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		free(comm);
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	return MNL_CB_OK;
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}
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int res_cq_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
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{
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	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
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	struct rd *rd = data;
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	const char *name;
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	uint32_t idx;
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	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
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	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
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		return MNL_CB_ERROR;
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	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
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	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
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	return (rd->show_raw) ? res_cq_line_raw(rd, name, idx, tb) :
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		res_cq_line(rd, name, idx, tb);
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}
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int res_cq_parse_cb(const struct nlmsghdr *nlh, void *data)
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{
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	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
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	struct nlattr *nla_table, *nla_entry;
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	struct rd *rd = data;
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	int ret = MNL_CB_OK;
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	const char *name;
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	uint32_t idx;
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	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
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	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
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	    !tb[RDMA_NLDEV_ATTR_RES_CQ])
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		return MNL_CB_ERROR;
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	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
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	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
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	nla_table = tb[RDMA_NLDEV_ATTR_RES_CQ];
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	mnl_attr_for_each_nested(nla_entry, nla_table) {
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		struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
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		ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
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		if (ret != MNL_CB_OK)
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			break;
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		ret = (rd->show_raw) ? res_cq_line_raw(rd, name, idx, nla_line) :
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			res_cq_line(rd, name, idx, nla_line);
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		if (ret != MNL_CB_OK)
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			break;
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	}
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	return ret;
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}