[mirror_iproute2.git] / rdma / link.c

// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
 * link.c	RDMA tool
 * 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);
	pr_out("Usage: %s link add NAME type TYPE netdev NETDEV\n",
	       rd->filename);
	pr_out("Usage: %s link delete NAME\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);
}

static int link_add_netdev(struct rd *rd)
{
	char *link_netdev;
	uint32_t seq;

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

	link_netdev = rd_argv(rd);
	rd_prepare_msg(rd, RDMA_NLDEV_CMD_NEWLINK, &seq,
		       (NLM_F_REQUEST | NLM_F_ACK));
	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_DEV_NAME, rd->link_name);
	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_LINK_TYPE, rd->link_type);
	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_NDEV_NAME, link_netdev);
	return rd_sendrecv_msg(rd, seq);
}

static int link_add_type(struct rd *rd)
{
	const struct rd_cmd cmds[] = {
		{ NULL,		link_help},
		{ "netdev",	link_add_netdev},
		{ 0 }
	};

	if (rd_no_arg(rd)) {
		pr_err("Please provide a link type name.\n");
		return -EINVAL;
	}
	rd->link_type = rd_argv(rd);
	rd_arg_inc(rd);
	return rd_exec_cmd(rd, cmds, "parameter");
}

static int link_add(struct rd *rd)
{
	const struct rd_cmd cmds[] = {
		{ NULL,		link_help},
		{ "type",	link_add_type},
		{ 0 }
	};

	if (rd_no_arg(rd)) {
		pr_err("Please provide a link name to add.\n");
		return -EINVAL;
	}
	rd->link_name = rd_argv(rd);
	rd_arg_inc(rd);

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

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

	if (!rd_no_arg(rd)) {
		pr_err("Unknown parameter %s\n", rd_argv(rd));
		return -EINVAL;
	}
	rd_prepare_msg(rd, RDMA_NLDEV_CMD_DELLINK, &seq,
		       (NLM_F_REQUEST | NLM_F_ACK));
	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	return rd_sendrecv_msg(rd, seq);
}

static int link_del(struct rd *rd)
{
	return rd_exec_require_dev(rd, _link_del);
}

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

	return rd_exec_cmd(rd, cmds, "link command");
}
Commit	Line	Data
835d8321	1	// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
da990ab4 LR	2	/*
da990ab4 LR	3	* link.c RDMA tool
da990ab4 LR	4	* Authors: Leon Romanovsky <leonro@mellanox.com>
	5	*/
	6
	7	#include "rdma.h"
	8
	9	static int link_help(struct rd *rd)
	10	{
	11	pr_out("Usage: %s link show [DEV/PORT_INDEX]\n", rd->filename);
4336c582 SW	12	pr_out("Usage: %s link add NAME type TYPE netdev NETDEV\n",
	13	rd->filename);
	14	pr_out("Usage: %s link delete NAME\n", rd->filename);
da990ab4 LR	15	return 0;
	16	}
	17
	18	static const char *caps_to_str(uint32_t idx)
	19	{
40fc8c2c	20	#define RDMA_PORT_FLAGS_LOW(x) \
d090fbf3	21	x(RESERVED, 0) \
da990ab4 LR	22	x(SM, 1) \
	23	x(NOTICE, 2) \
	24	x(TRAP, 3) \
	25	x(OPT_IPD, 4) \
	26	x(AUTO_MIGR, 5) \
	27	x(SL_MAP, 6) \
	28	x(MKEY_NVRAM, 7) \
	29	x(PKEY_NVRAM, 8) \
	30	x(LED_INFO, 9) \
	31	x(SM_DISABLED, 10) \
4e2eb9fd	32	x(SYS_IMAGE_GUID, 11) \
da990ab4	33	x(PKEY_SW_EXT_PORT_TRAP, 12) \
d090fbf3	34	x(CABLE_INFO, 13) \
da990ab4	35	x(EXTENDED_SPEEDS, 14) \
d090fbf3	36	x(CAP_MASK2, 15) \
da990ab4 LR	37	x(CM, 16) \
	38	x(SNMP_TUNNEL, 17) \
	39	x(REINIT, 18) \
	40	x(DEVICE_MGMT, 19) \
	41	x(VENDOR_CLASS, 20) \
	42	x(DR_NOTICE, 21) \
	43	x(CAP_MASK_NOTICE, 22) \
	44	x(BOOT_MGMT, 23) \
	45	x(LINK_LATENCY, 24) \
8f478ec2	46	x(CLIENT_REG, 25) \
d090fbf3 LR	47	x(OTHER_LOCAL_CHANGES, 26) \
	48	x(LINK_SPPED_WIDTH, 27) \
	49	x(VENDOR_SPECIFIC_MADS, 28) \
	50	x(MULT_PKER_TRAP, 29) \
	51	x(MULT_FDB, 30) \
	52	x(HIERARCHY_INFO, 31)
da990ab4	53
40fc8c2c MG	54	#define RDMA_PORT_FLAGS_HIGH(x) \
	55	x(SET_NODE_DESC, 0) \
	56	x(EXT_INFO, 1) \
	57	x(VIRT, 2) \
	58	x(SWITCH_POR_STATE_TABLE, 3) \
	59	x(LINK_WIDTH_2X, 4) \
	60	x(LINK_SPEED_HDR, 5)
da990ab4	61
40fc8c2c MG	62	/*
	63	* Separation below is needed to allow compilation of rdmatool
	64	* on 32bits systems. On such systems, C-enum is limited to be
	65	* int and can't hold more than 32 bits.
	66	*/
	67	enum { RDMA_PORT_FLAGS_LOW(RDMA_BITMAP_ENUM) };
	68	enum { RDMA_PORT_FLAGS_HIGH(RDMA_BITMAP_ENUM) };
	69
	70	static const char * const
	71	rdma_port_names_low[] = { RDMA_PORT_FLAGS_LOW(RDMA_BITMAP_NAMES) };
da990ab4	72	static const char * const
40fc8c2c MG	73	rdma_port_names_high[] = { RDMA_PORT_FLAGS_HIGH(RDMA_BITMAP_NAMES) };
	74	uint32_t high_idx;
	75	#undef RDMA_PORT_FLAGS_LOW
	76	#undef RDMA_PORT_FLAGS_HIGH
	77
	78	if (idx < ARRAY_SIZE(rdma_port_names_low) && rdma_port_names_low[idx])
	79	return rdma_port_names_low[idx];
	80
	81	high_idx = idx - ARRAY_SIZE(rdma_port_names_low);
	82	if (high_idx < ARRAY_SIZE(rdma_port_names_high) &&
	83	rdma_port_names_high[high_idx])
	84	return rdma_port_names_high[high_idx];
da990ab4	85
40fc8c2c	86	return "UNKNOWN";
da990ab4 LR	87	}
da990ab4 LR	88
7fc75744	89	static void link_print_caps(struct rd rd, struct nlattr *tb)
da990ab4 LR	90	{
	91	uint64_t caps;
	92	uint32_t idx;
	93
	94	if (!tb[RDMA_NLDEV_ATTR_CAP_FLAGS])
	95	return;
	96
	97	caps = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_CAP_FLAGS]);
	98
7fc75744 LR	99	if (rd->json_output) {
	100	jsonw_name(rd->jw, "caps");
	101	jsonw_start_array(rd->jw);
	102	} else {
	103	pr_out("\n caps: <");
	104	}
da990ab4 LR	105	for (idx = 0; caps; idx++) {
da990ab4 LR	106	if (caps & 0x1) {
7fc75744 LR	107	if (rd->json_output) {
	108	jsonw_string(rd->jw, caps_to_str(idx));
	109	} else {
	110	pr_out("%s", caps_to_str(idx));
	111	if (caps >> 0x1)
	112	pr_out(", ");
	113	}
da990ab4 LR	114	}
	115	caps >>= 0x1;
	116	}
	117
7fc75744 LR	118	if (rd->json_output)
	119	jsonw_end_array(rd->jw);
	120	else
	121	pr_out(">");
da990ab4 LR	122	}
da990ab4 LR	123
7fc75744	124	static void link_print_subnet_prefix(struct rd rd, struct nlattr *tb)
da990ab4 LR	125	{
da990ab4 LR	126	uint64_t subnet_prefix;
7fc75744 LR	127	uint16_t vp[4];
7fc75744 LR	128	char str[32];
da990ab4 LR	129
	130	if (!tb[RDMA_NLDEV_ATTR_SUBNET_PREFIX])
	131	return;
	132
	133	subnet_prefix = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_SUBNET_PREFIX]);
7fc75744 LR	134	memcpy(vp, &subnet_prefix, sizeof(uint64_t));
	135	snprintf(str, 32, "%04x:%04x:%04x:%04x", vp[3], vp[2], vp[1], vp[0]);
	136	if (rd->json_output)
	137	jsonw_string_field(rd->jw, "subnet_prefix", str);
	138	else
	139	pr_out("subnet_prefix %s ", str);
da990ab4 LR	140	}
da990ab4 LR	141
7fc75744	142	static void link_print_lid(struct rd rd, struct nlattr *tb)
da990ab4	143	{
7fc75744 LR	144	uint32_t lid;
7fc75744 LR	145
da990ab4 LR	146	if (!tb[RDMA_NLDEV_ATTR_LID])
	147	return;
	148
7fc75744 LR	149	lid = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_LID]);
	150	if (rd->json_output)
	151	jsonw_uint_field(rd->jw, "lid", lid);
	152	else
	153	pr_out("lid %u ", lid);
da990ab4 LR	154	}
da990ab4 LR	155
7fc75744	156	static void link_print_sm_lid(struct rd rd, struct nlattr *tb)
da990ab4	157	{
7fc75744 LR	158	uint32_t sm_lid;
7fc75744 LR	159
da990ab4 LR	160	if (!tb[RDMA_NLDEV_ATTR_SM_LID])
	161	return;
	162
7fc75744 LR	163	sm_lid = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_SM_LID]);
	164	if (rd->json_output)
	165	jsonw_uint_field(rd->jw, "sm_lid", sm_lid);
	166	else
	167	pr_out("sm_lid %u ", sm_lid);
da990ab4 LR	168	}
da990ab4 LR	169
7fc75744	170	static void link_print_lmc(struct rd rd, struct nlattr *tb)
da990ab4	171	{
7fc75744 LR	172	uint8_t lmc;
7fc75744 LR	173
da990ab4 LR	174	if (!tb[RDMA_NLDEV_ATTR_LMC])
	175	return;
	176
7fc75744 LR	177	lmc = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_LMC]);
	178	if (rd->json_output)
	179	jsonw_uint_field(rd->jw, "lmc", lmc);
	180	else
	181	pr_out("lmc %u ", lmc);
da990ab4 LR	182	}
	183
	184	static const char *link_state_to_str(uint8_t link_state)
	185	{
	186	static const char * const link_state_str[] = { "NOP", "DOWN",
	187	"INIT", "ARMED",
	188	"ACTIVE",
	189	"ACTIVE_DEFER" };
	190	if (link_state < ARRAY_SIZE(link_state_str))
	191	return link_state_str[link_state];
	192	return "UNKNOWN";
	193	}
	194
7fc75744	195	static void link_print_state(struct rd rd, struct nlattr *tb)
da990ab4 LR	196	{
	197	uint8_t state;
	198
	199	if (!tb[RDMA_NLDEV_ATTR_PORT_STATE])
	200	return;
	201
	202	state = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_PORT_STATE]);
7fc75744 LR	203	if (rd->json_output)
	204	jsonw_string_field(rd->jw, "state", link_state_to_str(state));
	205	else
	206	pr_out("state %s ", link_state_to_str(state));
da990ab4 LR	207	}
	208
	209	static const char *phys_state_to_str(uint8_t phys_state)
	210	{
	211	static const char * const phys_state_str[] = { "NOP", "SLEEP",
	212	"POLLING", "DISABLED",
	213	"ARMED", "LINK_UP",
	214	"LINK_ERROR_RECOVER",
	215	"PHY_TEST", "UNKNOWN",
	216	"OPA_OFFLINE",
	217	"UNKNOWN", "OPA_TEST" };
	218	if (phys_state < ARRAY_SIZE(phys_state_str))
	219	return phys_state_str[phys_state];
	220	return "UNKNOWN";
	221	};
	222
7fc75744	223	static void link_print_phys_state(struct rd rd, struct nlattr *tb)
da990ab4 LR	224	{
	225	uint8_t phys_state;
	226
	227	if (!tb[RDMA_NLDEV_ATTR_PORT_PHYS_STATE])
	228	return;
	229
	230	phys_state = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_PORT_PHYS_STATE]);
7fc75744 LR	231	if (rd->json_output)
	232	jsonw_string_field(rd->jw, "physical_state",
	233	phys_state_to_str(phys_state));
	234	else
	235	pr_out("physical_state %s ", phys_state_to_str(phys_state));
da990ab4 LR	236	}
da990ab4 LR	237
15259427 LR	238	static void link_print_netdev(struct rd rd, struct nlattr *tb)
	239	{
	240	const char *netdev_name;
	241	uint32_t idx;
	242
	243	if (!tb[RDMA_NLDEV_ATTR_NDEV_NAME] \|\| !tb[RDMA_NLDEV_ATTR_NDEV_INDEX])
	244	return;
	245
	246	netdev_name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_NDEV_NAME]);
	247	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_NDEV_INDEX]);
	248	if (rd->json_output) {
	249	jsonw_string_field(rd->jw, "netdev", netdev_name);
	250	jsonw_uint_field(rd->jw, "netdev_index", idx);
	251	} else {
	252	pr_out("netdev %s ", netdev_name);
	253	if (rd->show_details)
	254	pr_out("netdev_index %u ", idx);
	255	}
	256	}
	257
da990ab4 LR	258	static int link_parse_cb(const struct nlmsghdr nlh, void data)
	259	{
	260	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
	261	struct rd *rd = data;
7fc75744 LR	262	uint32_t port, idx;
7fc75744 LR	263	char name[32];
da990ab4 LR	264
	265	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
	266	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] \|\| !tb[RDMA_NLDEV_ATTR_DEV_NAME])
	267	return MNL_CB_ERROR;
	268
	269	if (!tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
	270	pr_err("This tool doesn't support switches yet\n");
	271	return MNL_CB_ERROR;
	272	}
	273
7fc75744 LR	274	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
	275	port = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
	276	snprintf(name, 32, "%s/%u",
	277	mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]), port);
	278
	279	if (rd->json_output) {
	280	jsonw_uint_field(rd->jw, "ifindex", idx);
	281	jsonw_uint_field(rd->jw, "port", port);
	282	jsonw_string_field(rd->jw, "ifname", name);
	283
	284	} else {
	285	pr_out("%u/%u: %s: ", idx, port, name);
	286	}
	287
	288	link_print_subnet_prefix(rd, tb);
	289	link_print_lid(rd, tb);
	290	link_print_sm_lid(rd, tb);
	291	link_print_lmc(rd, tb);
	292	link_print_state(rd, tb);
	293	link_print_phys_state(rd, tb);
15259427	294	link_print_netdev(rd, tb);
da990ab4	295	if (rd->show_details)
7fc75744	296	link_print_caps(rd, tb);
da990ab4	297
7fc75744 LR	298	if (!rd->json_output)
7fc75744 LR	299	pr_out("\n");
da990ab4 LR	300	return MNL_CB_OK;
	301	}
	302
	303	static int link_no_args(struct rd *rd)
	304	{
	305	uint32_t seq;
	306	int ret;
	307
	308	rd_prepare_msg(rd, RDMA_NLDEV_CMD_PORT_GET, &seq,
	309	(NLM_F_REQUEST \| NLM_F_ACK));
	310	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	311	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);
	312	ret = rd_send_msg(rd);
	313	if (ret)
	314	return ret;
	315
7fc75744 LR	316	if (rd->json_output)
	317	jsonw_start_object(rd->jw);
	318	ret = rd_recv_msg(rd, link_parse_cb, rd, seq);
	319	if (rd->json_output)
	320	jsonw_end_object(rd->jw);
	321	return ret;
da990ab4 LR	322	}
	323
	324	static int link_one_show(struct rd *rd)
	325	{
	326	const struct rd_cmd cmds[] = {
	327	{ NULL, link_no_args},
	328	{ 0 }
	329	};
	330
e3dee3c8 LR	331	if (!rd->port_idx)
	332	return 0;
	333
da990ab4 LR	334	return rd_exec_cmd(rd, cmds, "parameter");
	335	}
	336
	337	static int link_show(struct rd *rd)
	338	{
6416d1a0	339	return rd_exec_link(rd, link_one_show, true);
da990ab4 LR	340	}
da990ab4 LR	341
4336c582 SW	342	static int link_add_netdev(struct rd *rd)
	343	{
	344	char *link_netdev;
	345	uint32_t seq;
	346
	347	if (rd_no_arg(rd)) {
	348	pr_err("Please provide a net device name.\n");
	349	return -EINVAL;
	350	}
	351
	352	link_netdev = rd_argv(rd);
	353	rd_prepare_msg(rd, RDMA_NLDEV_CMD_NEWLINK, &seq,
	354	(NLM_F_REQUEST \| NLM_F_ACK));
	355	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_DEV_NAME, rd->link_name);
	356	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_LINK_TYPE, rd->link_type);
	357	mnl_attr_put_strz(rd->nlh, RDMA_NLDEV_ATTR_NDEV_NAME, link_netdev);
	358	return rd_sendrecv_msg(rd, seq);
	359	}
	360
	361	static int link_add_type(struct rd *rd)
	362	{
	363	const struct rd_cmd cmds[] = {
	364	{ NULL, link_help},
	365	{ "netdev", link_add_netdev},
	366	{ 0 }
	367	};
	368
	369	if (rd_no_arg(rd)) {
	370	pr_err("Please provide a link type name.\n");
	371	return -EINVAL;
	372	}
	373	rd->link_type = rd_argv(rd);
	374	rd_arg_inc(rd);
	375	return rd_exec_cmd(rd, cmds, "parameter");
	376	}
	377
	378	static int link_add(struct rd *rd)
	379	{
	380	const struct rd_cmd cmds[] = {
	381	{ NULL, link_help},
	382	{ "type", link_add_type},
	383	{ 0 }
	384	};
	385
	386	if (rd_no_arg(rd)) {
	387	pr_err("Please provide a link name to add.\n");
	388	return -EINVAL;
	389	}
	390	rd->link_name = rd_argv(rd);
	391	rd_arg_inc(rd);
	392
	393	return rd_exec_cmd(rd, cmds, "parameter");
	394	}
	395
	396	static int _link_del(struct rd *rd)
	397	{
	398	uint32_t seq;
	399
	400	if (!rd_no_arg(rd)) {
	401	pr_err("Unknown parameter %s\n", rd_argv(rd));
	402	return -EINVAL;
	403	}
	404	rd_prepare_msg(rd, RDMA_NLDEV_CMD_DELLINK, &seq,
	405	(NLM_F_REQUEST \| NLM_F_ACK));
406	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
407	return rd_sendrecv_msg(rd, seq);
408	}
409
410	static int link_del(struct rd *rd)
411	{
412	return rd_exec_require_dev(rd, _link_del);
413	}
414
da990ab4 LR	415	int cmd_link(struct rd *rd)
	416	{
	417	const struct rd_cmd cmds[] = {
	418	{ NULL, link_show },
4336c582 SW	419	{ "add", link_add },
4336c582 SW	420	{ "delete", link_del },
da990ab4 LR	421	{ "show", link_show },
	422	{ "list", link_show },
	423	{ "help", link_help },
	424	{ 0 }
	425	};
	426
	427	return rd_exec_cmd(rd, cmds, "link command");
	428	}