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Date: Thu, 15 Sep 2022 15:51:50 +0200
From: Michal Wilczynski <michal.wilczynski@...el.com>
To: netdev@...r.kernel.org
Cc: alexandr.lobakin@...el.com, dchumak@...dia.com, maximmi@...dia.com,
jiri@...nulli.us, simon.horman@...igine.com,
jacob.e.keller@...el.com, jesse.brandeburg@...el.com,
przemyslaw.kitszel@...el.com,
Michal Wilczynski <michal.wilczynski@...el.com>
Subject: [RFC PATCH iproute2-next] iproute2: Support for queues and new parameters
New object type 'queue' is being added in the kernel, and new parameters
are being added: 'tx_weight' and 'tx_priority'.
Add support for configuration of these new elements.
Correspoding kernel changes:
https://lore.kernel.org/netdev/20220915134239.1935604-1-michal.wilczynski@intel.com/
Signed-off-by: Michal Wilczynski <michal.wilczynski@...el.com>
---
devlink/devlink.c | 137 ++++++++++++++++++++++++++++++-----
include/uapi/linux/devlink.h | 8 +-
2 files changed, 127 insertions(+), 18 deletions(-)
diff --git a/devlink/devlink.c b/devlink/devlink.c
index 4f77e42f..abd9b823 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -297,6 +297,9 @@ static void ifname_map_free(struct ifname_map *ifname_map)
#define DL_OPT_LINECARD BIT(52)
#define DL_OPT_LINECARD_TYPE BIT(53)
#define DL_OPT_SELFTESTS BIT(54)
+#define DL_OPT_PORT_FN_RATE_QUEUE BIT(55)
+#define DL_OPT_PORT_FN_RATE_TX_PRIORITY BIT(56)
+#define DL_OPT_PORT_FN_RATE_TX_WEIGHT BIT(57)
struct dl_opts {
uint64_t present; /* flags of present items */
@@ -353,8 +356,11 @@ struct dl_opts {
uint16_t port_pfnumber;
uint8_t port_fn_state;
uint16_t rate_type;
+ uint16_t rate_queue;
uint64_t rate_tx_share;
uint64_t rate_tx_max;
+ uint16_t rate_tx_priority;
+ uint16_t rate_tx_weight;
char *rate_node_name;
const char *rate_parent_node;
uint32_t linecard_index;
@@ -1043,6 +1049,23 @@ static int dl_argv_handle_both(struct dl *dl, char **p_bus_name,
return 0;
}
+static int __dl_argv_handle_queue_name(char *str, char **p_bus_name,
+ char **p_dev_name, char **p_name)
+{
+ char *handlestr, *after, *before;
+ int err;
+
+ err = str_split_by_char(str, &handlestr, p_name, '/');
+ if (err)
+ return err;
+
+ err = str_split_by_char(handlestr, &before, &after, '/');
+ if (err)
+ return err;
+
+ return str_split_by_char(handlestr, p_bus_name, p_dev_name, '/');
+}
+
static int __dl_argv_handle_name(char *str, char **p_bus_name,
char **p_dev_name, char **p_name)
{
@@ -1103,13 +1126,33 @@ static int dl_argv_handle_rate_node(struct dl *dl, char **p_bus_name,
static int dl_argv_handle_rate(struct dl *dl, char **p_bus_name,
char **p_dev_name, uint32_t *p_port_index,
- char **p_node_name, uint64_t *p_handle_bit)
+ uint16_t *queue_id, char **p_node_name,
+ uint64_t *p_handle_bit)
{
char *str = dl_argv_next(dl);
char *identifier;
int err;
+ if (strstr(str, "queue")) {
+ err = __dl_argv_handle_queue_name(str, p_bus_name, p_dev_name, &identifier);
+ if (err) {
+ pr_err("Identification \"%s\" is invalid\n"
+ "Expected \"bus_name/dev_name/queue/queue_id identification.",
+ str);
+ return err;
+ }
+
+ if (!*identifier) {
+ pr_err("Identifier cannot be empty");
+ return -EINVAL;
+ }
+ err = get_u16(queue_id, identifier, 10);
+ *p_handle_bit = DL_OPT_PORT_FN_RATE_QUEUE;
+ return err;
+ }
+
err = ident_str_validate(str, 2);
+
if (err) {
pr_err("Expected \"bus_name/dev_name/node\" or "
"\"bus_name/dev_name/port_index\" identification.\n");
@@ -1464,10 +1507,12 @@ static int port_fn_state_parse(const char *statestr, uint8_t *state)
static int port_fn_rate_type_get(const char *typestr, uint16_t *type)
{
- if (!strcmp(typestr, "leaf"))
- *type = DEVLINK_RATE_TYPE_LEAF;
+ if (!strcmp(typestr, "vport"))
+ *type = DEVLINK_RATE_TYPE_VPORT;
else if (!strcmp(typestr, "node"))
*type = DEVLINK_RATE_TYPE_NODE;
+ else if (!strcmp(typestr, "queue"))
+ *type = DEVLINK_RATE_TYPE_QUEUE;
else
return -EINVAL;
return 0;
@@ -1572,7 +1617,7 @@ static int dl_argv_parse(struct dl *dl, uint64_t o_required,
uint64_t handle_bit;
err = dl_argv_handle_rate(dl, &opts->bus_name, &opts->dev_name,
- &opts->port_index,
+ &opts->port_index, &opts->rate_queue,
&opts->rate_node_name,
&handle_bit);
if (err)
@@ -2049,13 +2094,33 @@ static int dl_argv_parse(struct dl *dl, uint64_t o_required,
if (err)
return err;
o_found |= DL_OPT_PORT_FN_RATE_TX_MAX;
- } else if (dl_argv_match(dl, "parent") &&
- (o_all & DL_OPT_PORT_FN_RATE_PARENT)) {
+ } else if (dl_argv_match(dl, "tx_priority") &&
+ (o_all & DL_OPT_PORT_FN_RATE_TX_PRIORITY)) {
+ dl_arg_inc(dl);
+ err = dl_argv_uint16_t(dl, &opts->rate_tx_priority);
+ if (err)
+ return err;
+ o_found |= DL_OPT_PORT_FN_RATE_TX_PRIORITY;
+ } else if (dl_argv_match(dl, "tx_weight") &&
+ (o_all & DL_OPT_PORT_FN_RATE_TX_WEIGHT)) {
+ dl_arg_inc(dl);
+ err = dl_argv_uint16_t(dl, &opts->rate_tx_weight);
+ if (err)
+ return err;
+ o_found |= DL_OPT_PORT_FN_RATE_TX_WEIGHT;
+ } else if (dl_argv_match(dl, "parent")
+ /* (o_all & DL_OPT_PORT_FN_RATE_PARENT)*/) {
dl_arg_inc(dl);
err = dl_argv_str(dl, &opts->rate_parent_node);
if (err)
return err;
o_found |= DL_OPT_PORT_FN_RATE_PARENT;
+ } else if (dl_argv_match(dl, "queue")) {
+ dl_arg_inc(dl);
+ err = dl_argv_uint16_t(dl, &opts->rate_queue);
+ if (err)
+ return err;
+ o_found |= DL_OPT_PORT_FN_RATE_QUEUE;
} else if (dl_argv_match(dl, "noparent") &&
(o_all & DL_OPT_PORT_FN_RATE_PARENT)) {
dl_arg_inc(dl);
@@ -2185,6 +2250,10 @@ static void dl_opts_put(struct nlmsghdr *nlh, struct dl *dl)
mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name);
mnl_attr_put_strz(nlh, DEVLINK_ATTR_RATE_NODE_NAME,
opts->rate_node_name);
+ } else if (opts->present & DL_OPT_PORT_FN_RATE_QUEUE) {
+ mnl_attr_put_strz(nlh, DEVLINK_ATTR_BUS_NAME, opts->bus_name);
+ mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name);
+ mnl_attr_put_u16(nlh, DEVLINK_ATTR_RATE_QUEUE, opts->rate_queue);
}
if (opts->present & DL_OPT_PORT_TYPE)
mnl_attr_put_u16(nlh, DEVLINK_ATTR_PORT_TYPE,
@@ -2317,12 +2386,21 @@ static void dl_opts_put(struct nlmsghdr *nlh, struct dl *dl)
if (opts->present & DL_OPT_PORT_FN_RATE_TX_SHARE)
mnl_attr_put_u64(nlh, DEVLINK_ATTR_RATE_TX_SHARE,
opts->rate_tx_share);
+ if (opts->present & DL_OPT_PORT_FN_RATE_TX_PRIORITY)
+ mnl_attr_put_u16(nlh, DEVLINK_ATTR_RATE_TX_PRIORITY,
+ opts->rate_tx_priority);
+ if (opts->present & DL_OPT_PORT_FN_RATE_TX_WEIGHT)
+ mnl_attr_put_u16(nlh, DEVLINK_ATTR_RATE_TX_WEIGHT,
+ opts->rate_tx_weight);
if (opts->present & DL_OPT_PORT_FN_RATE_TX_MAX)
mnl_attr_put_u64(nlh, DEVLINK_ATTR_RATE_TX_MAX,
opts->rate_tx_max);
if (opts->present & DL_OPT_PORT_FN_RATE_PARENT)
mnl_attr_put_strz(nlh, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
opts->rate_parent_node);
+ if (opts->present & DL_OPT_PORT_FN_RATE_QUEUE)
+ mnl_attr_put_u16(nlh, DEVLINK_ATTR_RATE_QUEUE,
+ opts->rate_queue);
if (opts->present & DL_OPT_LINECARD)
mnl_attr_put_u32(nlh, DEVLINK_ATTR_LINECARD_INDEX,
opts->linecard_index);
@@ -4881,12 +4959,19 @@ pr_out_port_rate_handle_start(struct dl *dl, struct nlattr **tb, bool try_nice)
const char *bus_name;
const char *dev_name;
const char *node_name;
- static char buf[64];
+ static char buf[128];
+ uint32_t queue_id;
bus_name = mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]);
dev_name = mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]);
- node_name = mnl_attr_get_str(tb[DEVLINK_ATTR_RATE_NODE_NAME]);
- sprintf(buf, "%s/%s/%s", bus_name, dev_name, node_name);
+
+ if (tb[DEVLINK_ATTR_RATE_QUEUE]) {
+ queue_id = mnl_attr_get_u16(tb[DEVLINK_ATTR_RATE_QUEUE]);
+ sprintf(buf, "%s/%s/queue/%u", bus_name, dev_name, queue_id);
+ } else if (tb[DEVLINK_ATTR_RATE_NODE_NAME]) {
+ node_name = mnl_attr_get_str(tb[DEVLINK_ATTR_RATE_NODE_NAME]);
+ sprintf(buf, "%s/%s/%s", bus_name, dev_name, node_name);
+ }
if (dl->json_output)
open_json_object(buf);
else
@@ -4896,10 +4981,12 @@ pr_out_port_rate_handle_start(struct dl *dl, struct nlattr **tb, bool try_nice)
static char *port_rate_type_name(uint16_t type)
{
switch (type) {
- case DEVLINK_RATE_TYPE_LEAF:
- return "leaf";
+ case DEVLINK_RATE_TYPE_VPORT:
+ return "vport";
case DEVLINK_RATE_TYPE_NODE:
return "node";
+ case DEVLINK_RATE_TYPE_QUEUE:
+ return "queue";
default:
return "<unknown type>";
}
@@ -4908,7 +4995,7 @@ static char *port_rate_type_name(uint16_t type)
static void pr_out_port_fn_rate(struct dl *dl, struct nlattr **tb)
{
- if (!tb[DEVLINK_ATTR_RATE_NODE_NAME])
+ if (!tb[DEVLINK_ATTR_RATE_NODE_NAME] && !tb[DEVLINK_ATTR_RATE_QUEUE])
pr_out_port_handle_start(dl, tb, false);
else
pr_out_port_rate_handle_start(dl, tb, false);
@@ -4956,7 +5043,8 @@ static int cmd_port_fn_rate_show_cb(const struct nlmsghdr *nlh, void *data)
mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);
if ((!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] ||
!tb[DEVLINK_ATTR_PORT_INDEX]) &&
- !tb[DEVLINK_ATTR_RATE_NODE_NAME]) {
+ !tb[DEVLINK_ATTR_RATE_NODE_NAME] &&
+ !tb[DEVLINK_ATTR_RATE_QUEUE]) {
return MNL_CB_ERROR;
}
pr_out_port_fn_rate(dl, tb);
@@ -4968,10 +5056,12 @@ static void cmd_port_fn_rate_help(void)
pr_err("Usage: devlink port function rate help\n");
pr_err(" devlink port function rate show [ DEV/{ PORT_INDEX | NODE_NAME } ]\n");
pr_err(" devlink port function rate add DEV/NODE_NAME\n");
- pr_err(" [ tx_share VAL ][ tx_max VAL ][ { parent NODE_NAME | noparent } ]\n");
+ pr_err(" [ tx_share VAL ][ tx_max VAL ][ tx_priority ][ { parent NODE_NAME | noparent } ]\n");
pr_err(" devlink port function rate del DEV/NODE_NAME\n");
pr_err(" devlink port function rate set DEV/{ PORT_INDEX | NODE_NAME }\n");
- pr_err(" [ tx_share VAL ][ tx_max VAL ][ { parent NODE_NAME | noparent } ]\n\n");
+ pr_err(" [ tx_share VAL ][ tx_max VAL ][ tx_priority ][ { parent NODE_NAME | noparent } ]\n\n");
+ pr_err(" devlink port function rate set DEV/queue/QUEUE_ID\n");
+ pr_err(" [ tx_share VAL ][ tx_max VAL ][ tx_priority ][ { parent NODE_NAME | noparent } ]\n\n");
pr_err(" VAL - float or integer value in units of bits or bytes per second (bit|bps)\n");
pr_err(" and SI (k-, m-, g-, t-) or IEC (ki-, mi-, gi-, ti-) case-insensitive prefix.\n");
pr_err(" Bare number, means bits per second, is possible.\n\n");
@@ -5031,7 +5121,11 @@ static int cmd_port_fn_rate_add(struct dl *dl)
int err;
err = dl_argv_parse(dl, DL_OPT_PORT_FN_RATE_NODE_NAME,
- DL_OPT_PORT_FN_RATE_TX_SHARE | DL_OPT_PORT_FN_RATE_TX_MAX);
+ DL_OPT_PORT_FN_RATE_TX_SHARE | DL_OPT_PORT_FN_RATE_TX_MAX |
+ DL_OPT_PORT_FN_RATE_TX_PRIORITY |
+ DL_OPT_PORT_FN_RATE_TX_WEIGHT |
+ DL_OPT_PORT_FN_RATE_PARENT);
+
if (err)
return err;
@@ -5085,6 +5179,12 @@ static int port_fn_get_rates_cb(const struct nlmsghdr *nlh, void *data)
if (tb[DEVLINK_ATTR_RATE_TX_MAX])
opts->rate_tx_max =
mnl_attr_get_u64(tb[DEVLINK_ATTR_RATE_TX_MAX]);
+ if (tb[DEVLINK_ATTR_RATE_TX_PRIORITY])
+ opts->rate_tx_priority =
+ mnl_attr_get_u16(tb[DEVLINK_ATTR_RATE_TX_PRIORITY]);
+ if (tb[DEVLINK_ATTR_RATE_TX_WEIGHT])
+ opts->rate_tx_weight =
+ mnl_attr_get_u16(tb[DEVLINK_ATTR_RATE_TX_WEIGHT]);
return MNL_CB_OK;
}
@@ -5098,7 +5198,10 @@ static int cmd_port_fn_rate_set(struct dl *dl)
DL_OPT_PORT_FN_RATE_NODE_NAME,
DL_OPT_PORT_FN_RATE_TX_SHARE |
DL_OPT_PORT_FN_RATE_TX_MAX |
- DL_OPT_PORT_FN_RATE_PARENT);
+ DL_OPT_PORT_FN_RATE_TX_PRIORITY |
+ DL_OPT_PORT_FN_RATE_TX_WEIGHT |
+ DL_OPT_PORT_FN_RATE_PARENT |
+ DL_OPT_PORT_FN_RATE_QUEUE);
if (err)
return err;
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 0224b8bd..7b6576f5 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -220,8 +220,10 @@ enum devlink_port_flavour {
};
enum devlink_rate_type {
- DEVLINK_RATE_TYPE_LEAF,
+ DEVLINK_RATE_TYPE_LEAF, /* deprecated, leaving this for backward compatibility */
DEVLINK_RATE_TYPE_NODE,
+ DEVLINK_RATE_TYPE_QUEUE,
+ DEVLINK_RATE_TYPE_VPORT,
};
enum devlink_param_cmode {
@@ -607,6 +609,10 @@ enum devlink_attr {
DEVLINK_ATTR_SELFTESTS, /* nested */
+ DEVLINK_ATTR_RATE_QUEUE, /* u16 */
+ DEVLINK_ATTR_RATE_TX_PRIORITY, /* u16 */
+ DEVLINK_ATTR_RATE_TX_WEIGHT, /* u16 */
+
/* add new attributes above here, update the policy in devlink.c */
__DEVLINK_ATTR_MAX,
--
2.27.0
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