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devlink: extend multicast filtering by port index

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Expose the previously introduced notification multicast messages
filtering infrastructure and allow the user to select messages using
port index.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jiri Pirko 2023-12-16 13:30:01 +01:00 committed by Paolo Abeni
parent 13b127d257
commit ded6f77c05
6 changed files with 31 additions and 5 deletions
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1
Documentation/netlink/specs/devlink.yaml
View File

@ -2264,3 +2264,4 @@ operations:
attributes:
- bus-name
- dev-name
- port-index

9
net/devlink/devl_internal.h
View File

@ -195,6 +195,8 @@ struct devlink_obj_desc {
struct rcu_head rcu;
const char *bus_name;
const char *dev_name;
unsigned int port_index;
bool port_index_valid;
long data[];
};
@ -206,6 +208,13 @@ static inline void devlink_nl_obj_desc_init(struct devlink_obj_desc *desc,
desc->dev_name = dev_name(devlink->dev);
}
static inline void devlink_nl_obj_desc_port_set(struct devlink_obj_desc *desc,
struct devlink_port *devlink_port)
{
desc->port_index = devlink_port->index;
desc->port_index_valid = true;
}
int devlink_nl_notify_filter(struct sock *dsk, struct sk_buff *skb, void *data);
static inline void devlink_nl_notify_send_desc(struct devlink *devlink,

6
net/devlink/health.c
View File

@ -490,6 +490,7 @@ static void devlink_recover_notify(struct devlink_health_reporter *reporter,
enum devlink_command cmd)
{
struct devlink *devlink = reporter->devlink;
struct devlink_obj_desc desc;
struct sk_buff *msg;
int err;
@ -509,7 +510,10 @@ static void devlink_recover_notify(struct devlink_health_reporter *reporter,
return;
}
devlink_nl_notify_send(devlink, msg);
devlink_nl_obj_desc_init(&desc, devlink);
if (reporter->devlink_port)
devlink_nl_obj_desc_port_set(&desc, reporter->devlink_port);
devlink_nl_notify_send_desc(devlink, msg, &desc);
}
void

10
net/devlink/netlink.c
View File

@ -73,8 +73,13 @@ int devlink_nl_notify_filter_set_doit(struct sk_buff *skb,
flt->dev_name = pos;
}
if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
flt->port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
flt->port_index_valid = true;
}
/* Don't attach empty filter. */
if (!flt->bus_name && !flt->dev_name) {
if (!flt->bus_name && !flt->dev_name && !flt->port_index_valid) {
kfree(flt);
flt = NULL;
}
@ -101,6 +106,9 @@ static bool devlink_obj_desc_match(const struct devlink_obj_desc *desc,
if (desc->dev_name && flt->dev_name &&
strcmp(desc->dev_name, flt->dev_name))
return false;
if (desc->port_index_valid && flt->port_index_valid &&
desc->port_index != flt->port_index)
return false;
return true;
}

5
net/devlink/netlink_gen.c
View File

@ -561,9 +561,10 @@ static const struct nla_policy devlink_selftests_run_nl_policy[DEVLINK_ATTR_SELF
};
/* DEVLINK_CMD_NOTIFY_FILTER_SET - do */
static const struct nla_policy devlink_notify_filter_set_nl_policy[DEVLINK_ATTR_DEV_NAME + 1] = {
static const struct nla_policy devlink_notify_filter_set_nl_policy[DEVLINK_ATTR_PORT_INDEX + 1] = {
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING, },
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, },
[DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32, },
};
/* Ops table for devlink */
@ -1243,7 +1244,7 @@ const struct genl_split_ops devlink_nl_ops[74] = {
.cmd = DEVLINK_CMD_NOTIFY_FILTER_SET,
.doit = devlink_nl_notify_filter_set_doit,
.policy = devlink_notify_filter_set_nl_policy,
.maxattr = DEVLINK_ATTR_DEV_NAME,
.maxattr = DEVLINK_ATTR_PORT_INDEX,
.flags = GENL_CMD_CAP_DO,
},
};

5
net/devlink/port.c
View File

@ -507,6 +507,7 @@ static void devlink_port_notify(struct devlink_port *devlink_port,
enum devlink_command cmd)
{
struct devlink *devlink = devlink_port->devlink;
struct devlink_obj_desc desc;
struct sk_buff *msg;
int err;
@ -525,7 +526,9 @@ static void devlink_port_notify(struct devlink_port *devlink_port,
return;
}
devlink_nl_notify_send(devlink, msg);
devlink_nl_obj_desc_init(&desc, devlink);
devlink_nl_obj_desc_port_set(&desc, devlink_port);
devlink_nl_notify_send_desc(devlink, msg, &desc);
}
static void devlink_ports_notify(struct devlink *devlink,