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selftest: netdevsim: Add devlink rate tc-bw test

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Test verifies that netdevsim correctly implements devlink ops callbacks
that set tc-bw on leaf or node rate object.

Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/20250629142138.361537-4-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Carolina Jubran
2025-06-29 17:21:33 +03:00
committed by Jakub Kicinski
parent 566e8f108f
commit 236156d80d
3 changed files with 97 additions and 0 deletions
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43
drivers/net/netdevsim/dev.c
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@@ -388,6 +388,17 @@ static const struct file_operations nsim_dev_rate_parent_fops = {
.owner = THIS_MODULE,
};
static void nsim_dev_tc_bw_debugfs_init(struct dentry *ddir, u32 *tc_bw)
{
int i;
for (i = 0; i < DEVLINK_RATE_TCS_MAX; i++) {
char name[16];
snprintf(name, sizeof(name), "tc%d_bw", i);
debugfs_create_u32(name, 0400, ddir, &tc_bw[i]);
}
}
static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev,
struct nsim_dev_port *nsim_dev_port)
{
@@ -415,6 +426,8 @@ static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev,
nsim_dev_port->ddir,
&nsim_dev_port->parent_name,
&nsim_dev_rate_parent_fops);
nsim_dev_tc_bw_debugfs_init(nsim_dev_port->ddir,
nsim_dev_port->tc_bw);
}
debugfs_create_symlink("dev", nsim_dev_port->ddir, dev_link_name);
@@ -1172,6 +1185,19 @@ static int nsim_rate_bytes_to_units(char *name, u64 *rate, struct netlink_ext_ac
return 0;
}
static int nsim_leaf_tc_bw_set(struct devlink_rate *devlink_rate,
void *priv, u32 *tc_bw,
struct netlink_ext_ack *extack)
{
struct nsim_dev_port *nsim_dev_port = priv;
int i;
for (i = 0; i < DEVLINK_RATE_TCS_MAX; i++)
nsim_dev_port->tc_bw[i] = tc_bw[i];
return 0;
}
static int nsim_leaf_tx_share_set(struct devlink_rate *devlink_rate, void *priv,
u64 tx_share, struct netlink_ext_ack *extack)
{
@@ -1210,8 +1236,21 @@ struct nsim_rate_node {
char *parent_name;
u16 tx_share;
u16 tx_max;
u32 tc_bw[DEVLINK_RATE_TCS_MAX];
};
static int nsim_node_tc_bw_set(struct devlink_rate *devlink_rate, void *priv,
u32 *tc_bw, struct netlink_ext_ack *extack)
{
struct nsim_rate_node *nsim_node = priv;
int i;
for (i = 0; i < DEVLINK_RATE_TCS_MAX; i++)
nsim_node->tc_bw[i] = tc_bw[i];
return 0;
}
static int nsim_node_tx_share_set(struct devlink_rate *devlink_rate, void *priv,
u64 tx_share, struct netlink_ext_ack *extack)
{
@@ -1264,6 +1303,8 @@ static int nsim_rate_node_new(struct devlink_rate *node, void **priv,
&nsim_node->parent_name,
&nsim_dev_rate_parent_fops);
nsim_dev_tc_bw_debugfs_init(nsim_node->ddir, nsim_node->tc_bw);
*priv = nsim_node;
return 0;
}
@@ -1340,8 +1381,10 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
.trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get,
.rate_leaf_tx_share_set = nsim_leaf_tx_share_set,
.rate_leaf_tx_max_set = nsim_leaf_tx_max_set,
.rate_leaf_tc_bw_set = nsim_leaf_tc_bw_set,
.rate_node_tx_share_set = nsim_node_tx_share_set,
.rate_node_tx_max_set = nsim_node_tx_max_set,
.rate_node_tc_bw_set = nsim_node_tc_bw_set,
.rate_node_new = nsim_rate_node_new,
.rate_node_del = nsim_rate_node_del,
.rate_leaf_parent_set = nsim_rate_leaf_parent_set,