[mirror_iproute2.git] / rdma / link.c

/*
 * link.c	RDMA tool
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 *
 * Authors:     Leon Romanovsky <leonro@mellanox.com>
 */

#include "rdma.h"

static int link_help(struct rd *rd)
{
	pr_out("Usage: %s link show [DEV/PORT_INDEX]\n", rd->filename);
	return 0;
}

static const char *caps_to_str(uint32_t idx)
{
#define RDMA_PORT_FLAGS_LOW(x) \
	x(RESERVED, 0) \
	x(SM, 1) \
	x(NOTICE, 2) \
	x(TRAP, 3) \
	x(OPT_IPD, 4) \
	x(AUTO_MIGR, 5) \
	x(SL_MAP, 6) \
	x(MKEY_NVRAM, 7) \
	x(PKEY_NVRAM, 8) \
	x(LED_INFO, 9) \
	x(SM_DISABLED, 10) \
	x(SYS_IMAGE_GUID, 11) \
	x(PKEY_SW_EXT_PORT_TRAP, 12) \
	x(CABLE_INFO, 13) \
	x(EXTENDED_SPEEDS, 14) \
	x(CAP_MASK2, 15) \
	x(CM, 16) \
	x(SNMP_TUNNEL, 17) \
	x(REINIT, 18) \
	x(DEVICE_MGMT, 19) \
	x(VENDOR_CLASS, 20) \
	x(DR_NOTICE, 21) \
	x(CAP_MASK_NOTICE, 22) \
	x(BOOT_MGMT, 23) \
	x(LINK_LATENCY, 24) \
	x(CLIENT_REG, 25) \
	x(OTHER_LOCAL_CHANGES, 26) \
	x(LINK_SPPED_WIDTH, 27) \
	x(VENDOR_SPECIFIC_MADS, 28) \
	x(MULT_PKER_TRAP, 29) \
	x(MULT_FDB, 30) \
	x(HIERARCHY_INFO, 31)

#define RDMA_PORT_FLAGS_HIGH(x) \
	x(SET_NODE_DESC, 0) \
	x(EXT_INFO, 1) \
	x(VIRT, 2) \
	x(SWITCH_POR_STATE_TABLE, 3) \
	x(LINK_WIDTH_2X, 4) \
	x(LINK_SPEED_HDR, 5)

	/*
	 * 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_PORT_FLAGS_LOW(RDMA_BITMAP_ENUM) };
	enum { RDMA_PORT_FLAGS_HIGH(RDMA_BITMAP_ENUM) };

	static const char * const
		rdma_port_names_low[] = { RDMA_PORT_FLAGS_LOW(RDMA_BITMAP_NAMES) };
	static const char * const
		rdma_port_names_high[] = { RDMA_PORT_FLAGS_HIGH(RDMA_BITMAP_NAMES) };
	uint32_t high_idx;
	#undef RDMA_PORT_FLAGS_LOW
	#undef RDMA_PORT_FLAGS_HIGH

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

	high_idx = idx - ARRAY_SIZE(rdma_port_names_low);
	if (high_idx < ARRAY_SIZE(rdma_port_names_high) &&
	    rdma_port_names_high[high_idx])
		return rdma_port_names_high[high_idx];

	return "UNKNOWN";
}

static void link_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, caps_to_str(idx));
			} else {
				pr_out("%s", 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 link_print_subnet_prefix(struct rd *rd, struct nlattr **tb)
{
	uint64_t subnet_prefix;
	uint16_t vp[4];
	char str[32];

	if (!tb[RDMA_NLDEV_ATTR_SUBNET_PREFIX])
		return;

	subnet_prefix = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_SUBNET_PREFIX]);
	memcpy(vp, &subnet_prefix, 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, "subnet_prefix", str);
	else
		pr_out("subnet_prefix %s ", str);
}

static void link_print_lid(struct rd *rd, struct nlattr **tb)
{
	uint32_t lid;

	if (!tb[RDMA_NLDEV_ATTR_LID])
		return;

	lid = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_LID]);
	if (rd->json_output)
		jsonw_uint_field(rd->jw, "lid", lid);
	else
		pr_out("lid %u ", lid);
}

static void link_print_sm_lid(struct rd *rd, struct nlattr **tb)
{
	uint32_t sm_lid;

	if (!tb[RDMA_NLDEV_ATTR_SM_LID])
		return;

	sm_lid = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_SM_LID]);
	if (rd->json_output)
		jsonw_uint_field(rd->jw, "sm_lid", sm_lid);
	else
		pr_out("sm_lid %u ", sm_lid);
}

static void link_print_lmc(struct rd *rd, struct nlattr **tb)
{
	uint8_t lmc;

	if (!tb[RDMA_NLDEV_ATTR_LMC])
		return;

	lmc = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_LMC]);
	if (rd->json_output)
		jsonw_uint_field(rd->jw, "lmc", lmc);
	else
		pr_out("lmc %u ", lmc);
}

static const char *link_state_to_str(uint8_t link_state)
{
	static const char * const link_state_str[] = { "NOP", "DOWN",
						       "INIT", "ARMED",
						       "ACTIVE",
						       "ACTIVE_DEFER" };
	if (link_state < ARRAY_SIZE(link_state_str))
		return link_state_str[link_state];
	return "UNKNOWN";
}

static void link_print_state(struct rd *rd, struct nlattr **tb)
{
	uint8_t state;

	if (!tb[RDMA_NLDEV_ATTR_PORT_STATE])
		return;

	state = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_PORT_STATE]);
	if (rd->json_output)
		jsonw_string_field(rd->jw, "state", link_state_to_str(state));
	else
		pr_out("state %s ", link_state_to_str(state));
}

static const char *phys_state_to_str(uint8_t phys_state)
{
	static const char * const phys_state_str[] = { "NOP", "SLEEP",
						       "POLLING", "DISABLED",
						       "ARMED", "LINK_UP",
						       "LINK_ERROR_RECOVER",
						       "PHY_TEST", "UNKNOWN",
						       "OPA_OFFLINE",
						       "UNKNOWN", "OPA_TEST" };
	if (phys_state < ARRAY_SIZE(phys_state_str))
		return phys_state_str[phys_state];
	return "UNKNOWN";
};

static void link_print_phys_state(struct rd *rd, struct nlattr **tb)
{
	uint8_t phys_state;

	if (!tb[RDMA_NLDEV_ATTR_PORT_PHYS_STATE])
		return;

	phys_state = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_PORT_PHYS_STATE]);
	if (rd->json_output)
		jsonw_string_field(rd->jw, "physical_state",
				   phys_state_to_str(phys_state));
	else
		pr_out("physical_state %s ", phys_state_to_str(phys_state));
}

static void link_print_netdev(struct rd *rd, struct nlattr **tb)
{
	const char *netdev_name;
	uint32_t idx;

	if (!tb[RDMA_NLDEV_ATTR_NDEV_NAME] || !tb[RDMA_NLDEV_ATTR_NDEV_INDEX])
		return;

	netdev_name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_NDEV_NAME]);
	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_NDEV_INDEX]);
	if (rd->json_output) {
		jsonw_string_field(rd->jw, "netdev", netdev_name);
		jsonw_uint_field(rd->jw, "netdev_index", idx);
	} else {
		pr_out("netdev %s ", netdev_name);
		if (rd->show_details)
			pr_out("netdev_index %u ", idx);
	}
}

static int link_parse_cb(const struct nlmsghdr *nlh, void *data)
{
	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
	struct rd *rd = data;
	uint32_t port, idx;
	char name[32];

	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;

	if (!tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
		pr_err("This tool doesn't support switches yet\n");
		return MNL_CB_ERROR;
	}

	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
	port = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
	snprintf(name, 32, "%s/%u",
		 mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]), port);

	if (rd->json_output) {
		jsonw_uint_field(rd->jw, "ifindex", idx);
		jsonw_uint_field(rd->jw, "port", port);
		jsonw_string_field(rd->jw, "ifname", name);

	} else {
		pr_out("%u/%u: %s: ", idx, port, name);
	}

	link_print_subnet_prefix(rd, tb);
	link_print_lid(rd, tb);
	link_print_sm_lid(rd, tb);
	link_print_lmc(rd, tb);
	link_print_state(rd, tb);
	link_print_phys_state(rd, tb);
	link_print_netdev(rd, tb);
	if (rd->show_details)
		link_print_caps(rd, tb);

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

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

	rd_prepare_msg(rd, RDMA_NLDEV_CMD_PORT_GET, &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_ATTR_PORT_INDEX, rd->port_idx);
	ret = rd_send_msg(rd);
	if (ret)
		return ret;

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

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

	if (!rd->port_idx)
		return 0;

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

static int link_show(struct rd *rd)
{
	return rd_exec_link(rd, link_one_show, true);
}

int cmd_link(struct rd *rd)
{
	const struct rd_cmd cmds[] = {
		{ NULL,		link_show },
		{ "show",	link_show },
		{ "list",	link_show },
		{ "help",	link_help },
		{ 0 }
	};

	return rd_exec_cmd(rd, cmds, "link command");
}
Commit	Line	Data
da990ab4 LR	1	/*
	2	* link.c RDMA tool
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
	9	* Authors: Leon Romanovsky <leonro@mellanox.com>
	10	*/
	11
	12	#include "rdma.h"
	13
	14	static int link_help(struct rd *rd)
	15	{
	16	pr_out("Usage: %s link show [DEV/PORT_INDEX]\n", rd->filename);
	17	return 0;
	18	}
	19
	20	static const char *caps_to_str(uint32_t idx)
	21	{
40fc8c2c	22	#define RDMA_PORT_FLAGS_LOW(x) \
d090fbf3	23	x(RESERVED, 0) \
da990ab4 LR	24	x(SM, 1) \
	25	x(NOTICE, 2) \
	26	x(TRAP, 3) \
	27	x(OPT_IPD, 4) \
	28	x(AUTO_MIGR, 5) \
	29	x(SL_MAP, 6) \
	30	x(MKEY_NVRAM, 7) \
	31	x(PKEY_NVRAM, 8) \
	32	x(LED_INFO, 9) \
	33	x(SM_DISABLED, 10) \
4e2eb9fd	34	x(SYS_IMAGE_GUID, 11) \
da990ab4	35	x(PKEY_SW_EXT_PORT_TRAP, 12) \
d090fbf3	36	x(CABLE_INFO, 13) \
da990ab4	37	x(EXTENDED_SPEEDS, 14) \
d090fbf3	38	x(CAP_MASK2, 15) \
da990ab4 LR	39	x(CM, 16) \
	40	x(SNMP_TUNNEL, 17) \
	41	x(REINIT, 18) \
	42	x(DEVICE_MGMT, 19) \
	43	x(VENDOR_CLASS, 20) \
	44	x(DR_NOTICE, 21) \
	45	x(CAP_MASK_NOTICE, 22) \
	46	x(BOOT_MGMT, 23) \
	47	x(LINK_LATENCY, 24) \
8f478ec2	48	x(CLIENT_REG, 25) \
d090fbf3 LR	49	x(OTHER_LOCAL_CHANGES, 26) \
	50	x(LINK_SPPED_WIDTH, 27) \
	51	x(VENDOR_SPECIFIC_MADS, 28) \
	52	x(MULT_PKER_TRAP, 29) \
	53	x(MULT_FDB, 30) \
	54	x(HIERARCHY_INFO, 31)
da990ab4	55
40fc8c2c MG	56	#define RDMA_PORT_FLAGS_HIGH(x) \
	57	x(SET_NODE_DESC, 0) \
	58	x(EXT_INFO, 1) \
	59	x(VIRT, 2) \
	60	x(SWITCH_POR_STATE_TABLE, 3) \
	61	x(LINK_WIDTH_2X, 4) \
	62	x(LINK_SPEED_HDR, 5)
da990ab4	63
40fc8c2c MG	64	/*
	65	* Separation below is needed to allow compilation of rdmatool
	66	* on 32bits systems. On such systems, C-enum is limited to be
	67	* int and can't hold more than 32 bits.
	68	*/
	69	enum { RDMA_PORT_FLAGS_LOW(RDMA_BITMAP_ENUM) };
	70	enum { RDMA_PORT_FLAGS_HIGH(RDMA_BITMAP_ENUM) };
	71
	72	static const char * const
	73	rdma_port_names_low[] = { RDMA_PORT_FLAGS_LOW(RDMA_BITMAP_NAMES) };
da990ab4	74	static const char * const
40fc8c2c MG	75	rdma_port_names_high[] = { RDMA_PORT_FLAGS_HIGH(RDMA_BITMAP_NAMES) };
	76	uint32_t high_idx;
	77	#undef RDMA_PORT_FLAGS_LOW
	78	#undef RDMA_PORT_FLAGS_HIGH
	79
	80	if (idx < ARRAY_SIZE(rdma_port_names_low) && rdma_port_names_low[idx])
	81	return rdma_port_names_low[idx];
	82
	83	high_idx = idx - ARRAY_SIZE(rdma_port_names_low);
	84	if (high_idx < ARRAY_SIZE(rdma_port_names_high) &&
	85	rdma_port_names_high[high_idx])
	86	return rdma_port_names_high[high_idx];
da990ab4	87
40fc8c2c	88	return "UNKNOWN";
da990ab4 LR	89	}
da990ab4 LR	90
7fc75744	91	static void link_print_caps(struct rd rd, struct nlattr *tb)
da990ab4 LR	92	{
	93	uint64_t caps;
	94	uint32_t idx;
	95
	96	if (!tb[RDMA_NLDEV_ATTR_CAP_FLAGS])
	97	return;
	98
	99	caps = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_CAP_FLAGS]);
	100
7fc75744 LR	101	if (rd->json_output) {
	102	jsonw_name(rd->jw, "caps");
	103	jsonw_start_array(rd->jw);
	104	} else {
	105	pr_out("\n caps: <");
	106	}
da990ab4 LR	107	for (idx = 0; caps; idx++) {
da990ab4 LR	108	if (caps & 0x1) {
7fc75744 LR	109	if (rd->json_output) {
	110	jsonw_string(rd->jw, caps_to_str(idx));
	111	} else {
	112	pr_out("%s", caps_to_str(idx));
	113	if (caps >> 0x1)
	114	pr_out(", ");
	115	}
da990ab4 LR	116	}
	117	caps >>= 0x1;
	118	}
	119
7fc75744 LR	120	if (rd->json_output)
	121	jsonw_end_array(rd->jw);
	122	else
	123	pr_out(">");
da990ab4 LR	124	}
da990ab4 LR	125
7fc75744	126	static void link_print_subnet_prefix(struct rd rd, struct nlattr *tb)
da990ab4 LR	127	{
da990ab4 LR	128	uint64_t subnet_prefix;
7fc75744 LR	129	uint16_t vp[4];
7fc75744 LR	130	char str[32];
da990ab4 LR	131
	132	if (!tb[RDMA_NLDEV_ATTR_SUBNET_PREFIX])
	133	return;
	134
	135	subnet_prefix = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_SUBNET_PREFIX]);
7fc75744 LR	136	memcpy(vp, &subnet_prefix, sizeof(uint64_t));
	137	snprintf(str, 32, "%04x:%04x:%04x:%04x", vp[3], vp[2], vp[1], vp[0]);
	138	if (rd->json_output)
	139	jsonw_string_field(rd->jw, "subnet_prefix", str);
	140	else
	141	pr_out("subnet_prefix %s ", str);
da990ab4 LR	142	}
da990ab4 LR	143
7fc75744	144	static void link_print_lid(struct rd rd, struct nlattr *tb)
da990ab4	145	{
7fc75744 LR	146	uint32_t lid;
7fc75744 LR	147
da990ab4 LR	148	if (!tb[RDMA_NLDEV_ATTR_LID])
	149	return;
	150
7fc75744 LR	151	lid = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_LID]);
	152	if (rd->json_output)
	153	jsonw_uint_field(rd->jw, "lid", lid);
	154	else
	155	pr_out("lid %u ", lid);
da990ab4 LR	156	}
da990ab4 LR	157
7fc75744	158	static void link_print_sm_lid(struct rd rd, struct nlattr *tb)
da990ab4	159	{
7fc75744 LR	160	uint32_t sm_lid;
7fc75744 LR	161
da990ab4 LR	162	if (!tb[RDMA_NLDEV_ATTR_SM_LID])
	163	return;
	164
7fc75744 LR	165	sm_lid = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_SM_LID]);
	166	if (rd->json_output)
	167	jsonw_uint_field(rd->jw, "sm_lid", sm_lid);
	168	else
	169	pr_out("sm_lid %u ", sm_lid);
da990ab4 LR	170	}
da990ab4 LR	171
7fc75744	172	static void link_print_lmc(struct rd rd, struct nlattr *tb)
da990ab4	173	{
7fc75744 LR	174	uint8_t lmc;
7fc75744 LR	175
da990ab4 LR	176	if (!tb[RDMA_NLDEV_ATTR_LMC])
	177	return;
	178
7fc75744 LR	179	lmc = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_LMC]);
	180	if (rd->json_output)
	181	jsonw_uint_field(rd->jw, "lmc", lmc);
	182	else
	183	pr_out("lmc %u ", lmc);
da990ab4 LR	184	}
	185
	186	static const char *link_state_to_str(uint8_t link_state)
	187	{
	188	static const char * const link_state_str[] = { "NOP", "DOWN",
	189	"INIT", "ARMED",
	190	"ACTIVE",
	191	"ACTIVE_DEFER" };
	192	if (link_state < ARRAY_SIZE(link_state_str))
	193	return link_state_str[link_state];
	194	return "UNKNOWN";
	195	}
	196
7fc75744	197	static void link_print_state(struct rd rd, struct nlattr *tb)
da990ab4 LR	198	{
	199	uint8_t state;
	200
	201	if (!tb[RDMA_NLDEV_ATTR_PORT_STATE])
	202	return;
	203
	204	state = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_PORT_STATE]);
7fc75744 LR	205	if (rd->json_output)
	206	jsonw_string_field(rd->jw, "state", link_state_to_str(state));
	207	else
	208	pr_out("state %s ", link_state_to_str(state));
da990ab4 LR	209	}
	210
	211	static const char *phys_state_to_str(uint8_t phys_state)
	212	{
	213	static const char * const phys_state_str[] = { "NOP", "SLEEP",
	214	"POLLING", "DISABLED",
	215	"ARMED", "LINK_UP",
	216	"LINK_ERROR_RECOVER",
	217	"PHY_TEST", "UNKNOWN",
	218	"OPA_OFFLINE",
	219	"UNKNOWN", "OPA_TEST" };
	220	if (phys_state < ARRAY_SIZE(phys_state_str))
	221	return phys_state_str[phys_state];
	222	return "UNKNOWN";
	223	};
	224
7fc75744	225	static void link_print_phys_state(struct rd rd, struct nlattr *tb)
da990ab4 LR	226	{
	227	uint8_t phys_state;
	228
	229	if (!tb[RDMA_NLDEV_ATTR_PORT_PHYS_STATE])
	230	return;
	231
	232	phys_state = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_PORT_PHYS_STATE]);
7fc75744 LR	233	if (rd->json_output)
	234	jsonw_string_field(rd->jw, "physical_state",
	235	phys_state_to_str(phys_state));
	236	else
	237	pr_out("physical_state %s ", phys_state_to_str(phys_state));
da990ab4 LR	238	}
da990ab4 LR	239
15259427 LR	240	static void link_print_netdev(struct rd rd, struct nlattr *tb)
	241	{
	242	const char *netdev_name;
	243	uint32_t idx;
	244
	245	if (!tb[RDMA_NLDEV_ATTR_NDEV_NAME] \|\| !tb[RDMA_NLDEV_ATTR_NDEV_INDEX])
	246	return;
	247
	248	netdev_name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_NDEV_NAME]);
	249	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_NDEV_INDEX]);
	250	if (rd->json_output) {
	251	jsonw_string_field(rd->jw, "netdev", netdev_name);
	252	jsonw_uint_field(rd->jw, "netdev_index", idx);
	253	} else {
	254	pr_out("netdev %s ", netdev_name);
	255	if (rd->show_details)
	256	pr_out("netdev_index %u ", idx);
	257	}
	258	}
	259
da990ab4 LR	260	static int link_parse_cb(const struct nlmsghdr nlh, void data)
	261	{
	262	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
	263	struct rd *rd = data;
7fc75744 LR	264	uint32_t port, idx;
7fc75744 LR	265	char name[32];
da990ab4 LR	266
	267	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
	268	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] \|\| !tb[RDMA_NLDEV_ATTR_DEV_NAME])
	269	return MNL_CB_ERROR;
	270
	271	if (!tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
	272	pr_err("This tool doesn't support switches yet\n");
	273	return MNL_CB_ERROR;
	274	}
	275
7fc75744 LR	276	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
	277	port = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
	278	snprintf(name, 32, "%s/%u",
	279	mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]), port);
	280
	281	if (rd->json_output) {
	282	jsonw_uint_field(rd->jw, "ifindex", idx);
	283	jsonw_uint_field(rd->jw, "port", port);
	284	jsonw_string_field(rd->jw, "ifname", name);
	285
	286	} else {
	287	pr_out("%u/%u: %s: ", idx, port, name);
	288	}
	289
	290	link_print_subnet_prefix(rd, tb);
	291	link_print_lid(rd, tb);
	292	link_print_sm_lid(rd, tb);
	293	link_print_lmc(rd, tb);
	294	link_print_state(rd, tb);
	295	link_print_phys_state(rd, tb);
15259427	296	link_print_netdev(rd, tb);
da990ab4	297	if (rd->show_details)
7fc75744	298	link_print_caps(rd, tb);
da990ab4	299
7fc75744 LR	300	if (!rd->json_output)
7fc75744 LR	301	pr_out("\n");
da990ab4 LR	302	return MNL_CB_OK;
	303	}
	304
	305	static int link_no_args(struct rd *rd)
	306	{
	307	uint32_t seq;
	308	int ret;
	309
	310	rd_prepare_msg(rd, RDMA_NLDEV_CMD_PORT_GET, &seq,
	311	(NLM_F_REQUEST \| NLM_F_ACK));
	312	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	313	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);
	314	ret = rd_send_msg(rd);
	315	if (ret)
	316	return ret;
	317
7fc75744 LR	318	if (rd->json_output)
	319	jsonw_start_object(rd->jw);
	320	ret = rd_recv_msg(rd, link_parse_cb, rd, seq);
	321	if (rd->json_output)
	322	jsonw_end_object(rd->jw);
	323	return ret;
da990ab4 LR	324	}
	325
	326	static int link_one_show(struct rd *rd)
	327	{
	328	const struct rd_cmd cmds[] = {
	329	{ NULL, link_no_args},
	330	{ 0 }
	331	};
	332
e3dee3c8 LR	333	if (!rd->port_idx)
	334	return 0;
	335
da990ab4 LR	336	return rd_exec_cmd(rd, cmds, "parameter");
	337	}
	338
	339	static int link_show(struct rd *rd)
	340	{
6416d1a0	341	return rd_exec_link(rd, link_one_show, true);
da990ab4 LR	342	}
	343
	344	int cmd_link(struct rd *rd)
	345	{
	346	const struct rd_cmd cmds[] = {
	347	{ NULL, link_show },
	348	{ "show", link_show },
	349	{ "list", link_show },
	350	{ "help", link_help },
	351	{ 0 }
	352	};
	353
	354	return rd_exec_cmd(rd, cmds, "link command");
	355	}