[mirror_iproute2.git] / rdma / dev.c

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

#include <fcntl.h>
#include "rdma.h"

static int dev_help(struct rd *rd)
{
	pr_out("Usage: %s dev show [DEV]\n", rd->filename);
	pr_out("       %s dev set [DEV] name DEVNAME\n", rd->filename);
	pr_out("       %s dev set [DEV] netns NSNAME\n", rd->filename);
	return 0;
}

static const char *dev_caps_to_str(uint32_t idx)
{
#define RDMA_DEV_FLAGS_LOW(x) \
	x(RESIZE_MAX_WR, 0) \
	x(BAD_PKEY_CNTR, 1) \
	x(BAD_QKEY_CNTR, 2) \
	x(RAW_MULTI, 3) \
	x(AUTO_PATH_MIG, 4) \
	x(CHANGE_PHY_PORT, 5) \
	x(UD_AV_PORT_ENFORCE_PORT_ENFORCE, 6) \
	x(CURR_QP_STATE_MOD, 7) \
	x(SHUTDOWN_PORT, 8) \
	x(INIT_TYPE, 9) \
	x(PORT_ACTIVE_EVENT, 10) \
	x(SYS_IMAGE_GUID, 11) \
	x(RC_RNR_NAK_GEN, 12) \
	x(SRQ_RESIZE, 13) \
	x(N_NOTIFY_CQ, 14) \
	x(LOCAL_DMA_LKEY, 15) \
	x(MEM_WINDOW, 17) \
	x(UD_IP_CSUM, 18) \
	x(UD_TSO, 19) \
	x(XRC, 20) \
	x(MEM_MGT_EXTENSIONS, 21) \
	x(BLOCK_MULTICAST_LOOPBACK, 22) \
	x(MEM_WINDOW_TYPE_2A, 23) \
	x(MEM_WINDOW_TYPE_2B, 24) \
	x(RC_IP_CSUM, 25) \
	x(RAW_IP_CSUM, 26) \
	x(CROSS_CHANNEL, 27) \
	x(MANAGED_FLOW_STEERING, 29) \
	x(SIGNATURE_HANDOVER, 30) \
	x(ON_DEMAND_PAGING, 31)

#define RDMA_DEV_FLAGS_HIGH(x) \
	x(SG_GAPS_REG, 0) \
	x(VIRTUAL_FUNCTION, 1) \
	x(RAW_SCATTER_FCS, 2) \
	x(RDMA_NETDEV_OPA_VNIC, 3) \
	x(PCI_WRITE_END_PADDING, 4)

	/*
	 * Separation below is needed to allow compilation of rdmatool
	 * on 32bits systems. On such systems, C-enum is limited to be
	 * int and can't hold more than 32 bits.
	 */
	enum { RDMA_DEV_FLAGS_LOW(RDMA_BITMAP_ENUM) };
	enum { RDMA_DEV_FLAGS_HIGH(RDMA_BITMAP_ENUM) };

	static const char * const
		rdma_dev_names_low[] = { RDMA_DEV_FLAGS_LOW(RDMA_BITMAP_NAMES) };
	static const char * const
		rdma_dev_names_high[] = { RDMA_DEV_FLAGS_HIGH(RDMA_BITMAP_NAMES) };
	uint32_t high_idx;
	#undef RDMA_DEV_FLAGS_LOW
	#undef RDMA_DEV_FLAGS_HIGH

	if (idx < ARRAY_SIZE(rdma_dev_names_low) && rdma_dev_names_low[idx])
		return rdma_dev_names_low[idx];

	high_idx = idx - ARRAY_SIZE(rdma_dev_names_low);
	if (high_idx <  ARRAY_SIZE(rdma_dev_names_high) &&
	    rdma_dev_names_high[high_idx])
		return rdma_dev_names_high[high_idx];

	return "UNKNOWN";
}

static void dev_print_caps(struct rd *rd, struct nlattr **tb)
{
	uint64_t caps;
	uint32_t idx;

	if (!tb[RDMA_NLDEV_ATTR_CAP_FLAGS])
		return;

	caps = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_CAP_FLAGS]);

	if (rd->json_output) {
		jsonw_name(rd->jw, "caps");
		jsonw_start_array(rd->jw);
	} else {
		pr_out("\n    caps: <");
	}
	for (idx = 0; caps; idx++) {
		if (caps & 0x1) {
			if (rd->json_output) {
				jsonw_string(rd->jw, dev_caps_to_str(idx));
			} else {
				pr_out("%s", dev_caps_to_str(idx));
				if (caps >> 0x1)
					pr_out(", ");
			}
		}
		caps >>= 0x1;
	}

	if (rd->json_output)
		jsonw_end_array(rd->jw);
	else
		pr_out(">");
}

static void dev_print_fw(struct rd *rd, struct nlattr **tb)
{
	const char *str;
	if (!tb[RDMA_NLDEV_ATTR_FW_VERSION])
		return;

	str = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_FW_VERSION]);
	if (rd->json_output)
		jsonw_string_field(rd->jw, "fw", str);
	else
		pr_out("fw %s ", str);
}

static void dev_print_node_guid(struct rd *rd, struct nlattr **tb)
{
	uint64_t node_guid;
	uint16_t vp[4];
	char str[32];

	if (!tb[RDMA_NLDEV_ATTR_NODE_GUID])
		return;

	node_guid = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_NODE_GUID]);
	memcpy(vp, &node_guid, sizeof(uint64_t));
	snprintf(str, 32, "%04x:%04x:%04x:%04x", vp[3], vp[2], vp[1], vp[0]);
	if (rd->json_output)
		jsonw_string_field(rd->jw, "node_guid", str);
	else
		pr_out("node_guid %s ", str);
}

static void dev_print_sys_image_guid(struct rd *rd, struct nlattr **tb)
{
	uint64_t sys_image_guid;
	uint16_t vp[4];
	char str[32];

	if (!tb[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID])
		return;

	sys_image_guid = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID]);
	memcpy(vp, &sys_image_guid, sizeof(uint64_t));
	snprintf(str, 32, "%04x:%04x:%04x:%04x", vp[3], vp[2], vp[1], vp[0]);
	if (rd->json_output)
		jsonw_string_field(rd->jw, "sys_image_guid", str);
	else
		pr_out("sys_image_guid %s ", str);
}

static const char *node_type_to_str(uint8_t node_type)
{
	static const char * const node_type_str[] = { "unknown", "ca",
						      "switch", "router",
						      "rnic", "usnic",
						      "usnic_udp",
						      "unspecified" };
	if (node_type < ARRAY_SIZE(node_type_str))
		return node_type_str[node_type];
	return "unknown";
}

static void dev_print_node_type(struct rd *rd, struct nlattr **tb)
{
	const char *node_str;
	uint8_t node_type;

	if (!tb[RDMA_NLDEV_ATTR_DEV_NODE_TYPE])
		return;

	node_type = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_DEV_NODE_TYPE]);
	node_str = node_type_to_str(node_type);
	if (rd->json_output)
		jsonw_string_field(rd->jw, "node_type", node_str);
	else
		pr_out("node_type %s ", node_str);
}

static int dev_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;

	idx =  mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
	if (rd->json_output) {
		jsonw_uint_field(rd->jw, "ifindex", idx);
		jsonw_string_field(rd->jw, "ifname", name);
	} else {
		pr_out("%u: %s: ", idx, name);
	}

	dev_print_node_type(rd, tb);
	dev_print_fw(rd, tb);
	dev_print_node_guid(rd, tb);
	dev_print_sys_image_guid(rd, tb);
	if (rd->show_details)
		dev_print_caps(rd, tb);

	if (!rd->json_output)
		pr_out("\n");
	return MNL_CB_OK;
}

static int dev_no_args(struct rd *rd)
{
	uint32_t seq;
	int ret;

	rd_prepare_msg(rd, RDMA_NLDEV_CMD_GET,
		       &seq, (NLM_F_REQUEST | NLM_F_ACK));
	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	ret = rd_send_msg(rd);
	if (ret)
		return ret;

	if (rd->json_output)
		jsonw_start_object(rd->jw);
	ret = rd_recv_msg(rd, dev_parse_cb, rd, seq);
	if (rd->json_output)
		jsonw_end_object(rd->jw);
	return ret;
}

static int dev_one_show(struct rd *rd)
{
	const struct rd_cmd cmds[] = {
		{ NULL,		dev_no_args},
		{ 0 }
	};

	return rd_exec_cmd(rd, cmds, "parameter");
}

static int dev_set_name(struct rd *rd)
{
	uint32_t seq;

	if (rd_no_arg(rd)) {
		pr_err("Please provide device new name.\n");
		return -EINVAL;
	}

	rd_prepare_msg(rd, RDMA_NLDEV_CMD_SET,
		       &seq, (NLM_F_REQUEST | NLM_F_ACK));
	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_DEV_NAME, rd_argv(rd));

	return rd_sendrecv_msg(rd, seq);
}

static int dev_set_netns(struct rd *rd)
{
	char *netns_path;
	uint32_t seq;
	int netns;
	int ret;

	if (rd_no_arg(rd)) {
		pr_err("Please provide device name.\n");
		return -EINVAL;
	}

	if (asprintf(&netns_path, "%s/%s", NETNS_RUN_DIR, rd_argv(rd)) < 0)
		return -ENOMEM;

	netns = open(netns_path, O_RDONLY | O_CLOEXEC);
	if (netns < 0) {
		fprintf(stderr, "Cannot open network namespace \"%s\": %s\n",
			rd_argv(rd), strerror(errno));
		ret = -EINVAL;
		goto done;
	}

	rd_prepare_msg(rd, RDMA_NLDEV_CMD_SET,
		       &seq, (NLM_F_REQUEST | NLM_F_ACK));
	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_NET_NS_FD, netns);
	ret = rd_sendrecv_msg(rd, seq);
	close(netns);
done:
	free(netns_path);
	return ret;
}

static int dev_one_set(struct rd *rd)
{
	const struct rd_cmd cmds[] = {
		{ NULL,		dev_help},
		{ "name",	dev_set_name},
		{ "netns",	dev_set_netns},
		{ 0 }
	};

	return rd_exec_cmd(rd, cmds, "parameter");
}

static int dev_show(struct rd *rd)
{
	return rd_exec_dev(rd, dev_one_show);
}

static int dev_set(struct rd *rd)
{
	return rd_exec_require_dev(rd, dev_one_set);
}

int cmd_dev(struct rd *rd)
{
	const struct rd_cmd cmds[] = {
		{ NULL,		dev_show },
		{ "show",	dev_show },
		{ "list",	dev_show },
		{ "set",	dev_set },
		{ "help",	dev_help },
		{ 0 }
	};

	return rd_exec_cmd(rd, cmds, "dev command");
}
Commit	Line	Data
835d8321	1	// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
40df8263 LR	2	/*
40df8263 LR	3	* dev.c RDMA tool
40df8263 LR	4	* Authors: Leon Romanovsky <leonro@mellanox.com>
	5	*/
	6
d17a0248	7	#include <fcntl.h>
40df8263 LR	8	#include "rdma.h"
	9
	10	static int dev_help(struct rd *rd)
	11	{
	12	pr_out("Usage: %s dev show [DEV]\n", rd->filename);
4443c9c6	13	pr_out(" %s dev set [DEV] name DEVNAME\n", rd->filename);
d17a0248	14	pr_out(" %s dev set [DEV] netns NSNAME\n", rd->filename);
40df8263 LR	15	return 0;
	16	}
	17
	18	static const char *dev_caps_to_str(uint32_t idx)
	19	{
378dd31b	20	#define RDMA_DEV_FLAGS_LOW(x) \
40df8263 LR	21	x(RESIZE_MAX_WR, 0) \
	22	x(BAD_PKEY_CNTR, 1) \
	23	x(BAD_QKEY_CNTR, 2) \
	24	x(RAW_MULTI, 3) \
	25	x(AUTO_PATH_MIG, 4) \
	26	x(CHANGE_PHY_PORT, 5) \
	27	x(UD_AV_PORT_ENFORCE_PORT_ENFORCE, 6) \
	28	x(CURR_QP_STATE_MOD, 7) \
	29	x(SHUTDOWN_PORT, 8) \
	30	x(INIT_TYPE, 9) \
	31	x(PORT_ACTIVE_EVENT, 10) \
	32	x(SYS_IMAGE_GUID, 11) \
	33	x(RC_RNR_NAK_GEN, 12) \
	34	x(SRQ_RESIZE, 13) \
	35	x(N_NOTIFY_CQ, 14) \
	36	x(LOCAL_DMA_LKEY, 15) \
	37	x(MEM_WINDOW, 17) \
	38	x(UD_IP_CSUM, 18) \
	39	x(UD_TSO, 19) \
	40	x(XRC, 20) \
	41	x(MEM_MGT_EXTENSIONS, 21) \
	42	x(BLOCK_MULTICAST_LOOPBACK, 22) \
	43	x(MEM_WINDOW_TYPE_2A, 23) \
	44	x(MEM_WINDOW_TYPE_2B, 24) \
	45	x(RC_IP_CSUM, 25) \
	46	x(RAW_IP_CSUM, 26) \
	47	x(CROSS_CHANNEL, 27) \
	48	x(MANAGED_FLOW_STEERING, 29) \
	49	x(SIGNATURE_HANDOVER, 30) \
378dd31b	50	x(ON_DEMAND_PAGING, 31)
40df8263	51
378dd31b LR	52	#define RDMA_DEV_FLAGS_HIGH(x) \
	53	x(SG_GAPS_REG, 0) \
	54	x(VIRTUAL_FUNCTION, 1) \
	55	x(RAW_SCATTER_FCS, 2) \
	56	x(RDMA_NETDEV_OPA_VNIC, 3) \
	57	x(PCI_WRITE_END_PADDING, 4)
40df8263	58
378dd31b LR	59	/*
	60	* Separation below is needed to allow compilation of rdmatool
	61	* on 32bits systems. On such systems, C-enum is limited to be
	62	* int and can't hold more than 32 bits.
	63	*/
	64	enum { RDMA_DEV_FLAGS_LOW(RDMA_BITMAP_ENUM) };
	65	enum { RDMA_DEV_FLAGS_HIGH(RDMA_BITMAP_ENUM) };
	66
	67	static const char * const
	68	rdma_dev_names_low[] = { RDMA_DEV_FLAGS_LOW(RDMA_BITMAP_NAMES) };
40df8263	69	static const char * const
378dd31b LR	70	rdma_dev_names_high[] = { RDMA_DEV_FLAGS_HIGH(RDMA_BITMAP_NAMES) };
	71	uint32_t high_idx;
	72	#undef RDMA_DEV_FLAGS_LOW
	73	#undef RDMA_DEV_FLAGS_HIGH
	74
	75	if (idx < ARRAY_SIZE(rdma_dev_names_low) && rdma_dev_names_low[idx])
	76	return rdma_dev_names_low[idx];
	77
	78	high_idx = idx - ARRAY_SIZE(rdma_dev_names_low);
	79	if (high_idx < ARRAY_SIZE(rdma_dev_names_high) &&
	80	rdma_dev_names_high[high_idx])
	81	return rdma_dev_names_high[high_idx];
40df8263	82
40df8263 LR	83	return "UNKNOWN";
	84	}
	85
ef353e2e	86	static void dev_print_caps(struct rd rd, struct nlattr *tb)
40df8263 LR	87	{
	88	uint64_t caps;
	89	uint32_t idx;
	90
	91	if (!tb[RDMA_NLDEV_ATTR_CAP_FLAGS])
	92	return;
	93
	94	caps = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_CAP_FLAGS]);
	95
ef353e2e LR	96	if (rd->json_output) {
	97	jsonw_name(rd->jw, "caps");
	98	jsonw_start_array(rd->jw);
	99	} else {
	100	pr_out("\n caps: <");
	101	}
40df8263 LR	102	for (idx = 0; caps; idx++) {
40df8263 LR	103	if (caps & 0x1) {
ef353e2e LR	104	if (rd->json_output) {
	105	jsonw_string(rd->jw, dev_caps_to_str(idx));
	106	} else {
	107	pr_out("%s", dev_caps_to_str(idx));
	108	if (caps >> 0x1)
	109	pr_out(", ");
	110	}
40df8263 LR	111	}
	112	caps >>= 0x1;
	113	}
	114
ef353e2e LR	115	if (rd->json_output)
	116	jsonw_end_array(rd->jw);
	117	else
	118	pr_out(">");
40df8263 LR	119	}
40df8263 LR	120
ef353e2e	121	static void dev_print_fw(struct rd rd, struct nlattr *tb)
40df8263	122	{
ef353e2e	123	const char *str;
40df8263 LR	124	if (!tb[RDMA_NLDEV_ATTR_FW_VERSION])
	125	return;
	126
ef353e2e LR	127	str = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_FW_VERSION]);
	128	if (rd->json_output)
	129	jsonw_string_field(rd->jw, "fw", str);
	130	else
	131	pr_out("fw %s ", str);
40df8263 LR	132	}
40df8263 LR	133
ef353e2e	134	static void dev_print_node_guid(struct rd rd, struct nlattr *tb)
40df8263 LR	135	{
40df8263 LR	136	uint64_t node_guid;
ef353e2e LR	137	uint16_t vp[4];
ef353e2e LR	138	char str[32];
40df8263 LR	139
	140	if (!tb[RDMA_NLDEV_ATTR_NODE_GUID])
	141	return;
	142
	143	node_guid = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_NODE_GUID]);
ef353e2e LR	144	memcpy(vp, &node_guid, sizeof(uint64_t));
	145	snprintf(str, 32, "%04x:%04x:%04x:%04x", vp[3], vp[2], vp[1], vp[0]);
	146	if (rd->json_output)
	147	jsonw_string_field(rd->jw, "node_guid", str);
	148	else
	149	pr_out("node_guid %s ", str);
40df8263 LR	150	}
40df8263 LR	151
ef353e2e	152	static void dev_print_sys_image_guid(struct rd rd, struct nlattr *tb)
40df8263 LR	153	{
40df8263 LR	154	uint64_t sys_image_guid;
ef353e2e LR	155	uint16_t vp[4];
ef353e2e LR	156	char str[32];
40df8263 LR	157
	158	if (!tb[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID])
	159	return;
	160
	161	sys_image_guid = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID]);
ef353e2e LR	162	memcpy(vp, &sys_image_guid, sizeof(uint64_t));
	163	snprintf(str, 32, "%04x:%04x:%04x:%04x", vp[3], vp[2], vp[1], vp[0]);
	164	if (rd->json_output)
	165	jsonw_string_field(rd->jw, "sys_image_guid", str);
	166	else
	167	pr_out("sys_image_guid %s ", str);
40df8263 LR	168	}
	169
	170	static const char *node_type_to_str(uint8_t node_type)
	171	{
	172	static const char * const node_type_str[] = { "unknown", "ca",
	173	"switch", "router",
	174	"rnic", "usnic",
7087f7c0 GP	175	"usnic_udp",
7087f7c0 GP	176	"unspecified" };
40df8263 LR	177	if (node_type < ARRAY_SIZE(node_type_str))
	178	return node_type_str[node_type];
	179	return "unknown";
	180	}
	181
ef353e2e	182	static void dev_print_node_type(struct rd rd, struct nlattr *tb)
40df8263	183	{
ef353e2e	184	const char *node_str;
40df8263 LR	185	uint8_t node_type;
	186
	187	if (!tb[RDMA_NLDEV_ATTR_DEV_NODE_TYPE])
	188	return;
	189
	190	node_type = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_DEV_NODE_TYPE]);
ef353e2e LR	191	node_str = node_type_to_str(node_type);
	192	if (rd->json_output)
	193	jsonw_string_field(rd->jw, "node_type", node_str);
	194	else
	195	pr_out("node_type %s ", node_str);
40df8263 LR	196	}
	197
	198	static int dev_parse_cb(const struct nlmsghdr nlh, void data)
	199	{
	200	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
	201	struct rd *rd = data;
ef353e2e LR	202	const char *name;
ef353e2e LR	203	uint32_t idx;
40df8263 LR	204
	205	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
	206	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] \|\| !tb[RDMA_NLDEV_ATTR_DEV_NAME])
	207	return MNL_CB_ERROR;
	208
ef353e2e LR	209	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
	210	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
	211	if (rd->json_output) {
	212	jsonw_uint_field(rd->jw, "ifindex", idx);
	213	jsonw_string_field(rd->jw, "ifname", name);
	214	} else {
	215	pr_out("%u: %s: ", idx, name);
	216	}
	217
	218	dev_print_node_type(rd, tb);
	219	dev_print_fw(rd, tb);
	220	dev_print_node_guid(rd, tb);
	221	dev_print_sys_image_guid(rd, tb);
40df8263	222	if (rd->show_details)
ef353e2e	223	dev_print_caps(rd, tb);
40df8263	224
ef353e2e LR	225	if (!rd->json_output)
ef353e2e LR	226	pr_out("\n");
40df8263 LR	227	return MNL_CB_OK;
	228	}
	229
	230	static int dev_no_args(struct rd *rd)
	231	{
	232	uint32_t seq;
	233	int ret;
	234
	235	rd_prepare_msg(rd, RDMA_NLDEV_CMD_GET,
	236	&seq, (NLM_F_REQUEST \| NLM_F_ACK));
	237	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	238	ret = rd_send_msg(rd);
	239	if (ret)
	240	return ret;
	241
ef353e2e LR	242	if (rd->json_output)
	243	jsonw_start_object(rd->jw);
	244	ret = rd_recv_msg(rd, dev_parse_cb, rd, seq);
	245	if (rd->json_output)
	246	jsonw_end_object(rd->jw);
	247	return ret;
40df8263 LR	248	}
	249
	250	static int dev_one_show(struct rd *rd)
	251	{
	252	const struct rd_cmd cmds[] = {
	253	{ NULL, dev_no_args},
	254	{ 0 }
	255	};
	256
	257	return rd_exec_cmd(rd, cmds, "parameter");
	258	}
	259
4443c9c6 LR	260	static int dev_set_name(struct rd *rd)
	261	{
	262	uint32_t seq;
	263
	264	if (rd_no_arg(rd)) {
	265	pr_err("Please provide device new name.\n");
	266	return -EINVAL;
	267	}
	268
	269	rd_prepare_msg(rd, RDMA_NLDEV_CMD_SET,
	270	&seq, (NLM_F_REQUEST \| NLM_F_ACK));
	271	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	272	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_DEV_NAME, rd_argv(rd));
	273
8f5cfd23	274	return rd_sendrecv_msg(rd, seq);
4443c9c6 LR	275	}
4443c9c6 LR	276
d17a0248 PP	277	static int dev_set_netns(struct rd *rd)
	278	{
	279	char *netns_path;
	280	uint32_t seq;
	281	int netns;
	282	int ret;
	283
	284	if (rd_no_arg(rd)) {
	285	pr_err("Please provide device name.\n");
	286	return -EINVAL;
	287	}
	288
	289	if (asprintf(&netns_path, "%s/%s", NETNS_RUN_DIR, rd_argv(rd)) < 0)
	290	return -ENOMEM;
	291
	292	netns = open(netns_path, O_RDONLY \| O_CLOEXEC);
	293	if (netns < 0) {
	294	fprintf(stderr, "Cannot open network namespace \"%s\": %s\n",
	295	rd_argv(rd), strerror(errno));
	296	ret = -EINVAL;
	297	goto done;
	298	}
	299
	300	rd_prepare_msg(rd, RDMA_NLDEV_CMD_SET,
	301	&seq, (NLM_F_REQUEST \| NLM_F_ACK));
	302	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	303	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_NET_NS_FD, netns);
	304	ret = rd_sendrecv_msg(rd, seq);
	305	close(netns);
	306	done:
	307	free(netns_path);
	308	return ret;
	309	}
	310
4443c9c6 LR	311	static int dev_one_set(struct rd *rd)
	312	{
	313	const struct rd_cmd cmds[] = {
	314	{ NULL, dev_help},
	315	{ "name", dev_set_name},
d17a0248	316	{ "netns", dev_set_netns},
4443c9c6 LR	317	{ 0 }
	318	};
	319
	320	return rd_exec_cmd(rd, cmds, "parameter");
	321	}
	322
40df8263 LR	323	static int dev_show(struct rd *rd)
40df8263 LR	324	{
8b92a2c9	325	return rd_exec_dev(rd, dev_one_show);
40df8263 LR	326	}
40df8263 LR	327
4443c9c6 LR	328	static int dev_set(struct rd *rd)
	329	{
	330	return rd_exec_require_dev(rd, dev_one_set);
	331	}
	332
40df8263 LR	333	int cmd_dev(struct rd *rd)
	334	{
	335	const struct rd_cmd cmds[] = {
	336	{ NULL, dev_show },
	337	{ "show", dev_show },
	338	{ "list", dev_show },
4443c9c6	339	{ "set", dev_set },
40df8263 LR	340	{ "help", dev_help },
	341	{ 0 }
	342	};
	343
	344	return rd_exec_cmd(rd, cmds, "dev command");
	345	}