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net: core: dev: Add call_netdevice_notifiers_extack() 

In order to propagate extack through NETDEV_PRE_UP, add a new function
call_netdevice_notifiers_extack() that primes the extack field of the
notifier info. Convert call_netdevice_notifiers() to a simple wrapper
around the new function that passes NULL for extack.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-12-06 17:05:45 +00:00 committed by David S. Miller
parent 6d0403216d
commit 2637260534
1 changed files with 16 additions and 5 deletions
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21
net/core/dev.c
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@ -162,6 +162,9 @@ static struct list_head offload_base __read_mostly;
static int netif_rx_internal(struct sk_buff *skb);
static int call_netdevice_notifiers_info(unsigned long val,
struct netdev_notifier_info *info);
static int call_netdevice_notifiers_extack(unsigned long val,
struct net_device *dev,
struct netlink_ext_ack *extack);
static struct napi_struct *napi_by_id(unsigned int napi_id);
/*
@ -1734,6 +1737,18 @@ static int call_netdevice_notifiers_info(unsigned long val,
return raw_notifier_call_chain(&netdev_chain, val, info);
}
static int call_netdevice_notifiers_extack(unsigned long val,
struct net_device *dev,
struct netlink_ext_ack *extack)
{
struct netdev_notifier_info info = {
.dev = dev,
.extack = extack,
};
return call_netdevice_notifiers_info(val, &info);
}
/**
* call_netdevice_notifiers - call all network notifier blocks
* @val: value passed unmodified to notifier function
@ -1745,11 +1760,7 @@ static int call_netdevice_notifiers_info(unsigned long val,
int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
{
struct netdev_notifier_info info = {
.dev = dev,
};
return call_netdevice_notifiers_info(val, &info);
return call_netdevice_notifiers_extack(val, dev, NULL);
}
EXPORT_SYMBOL(call_netdevice_notifiers);