linux-stable/include/net/netns/nexthop.h
Ido Schimmel 80690ec6b5 nexthop: Convert to blocking notification chain
Currently, the only listener of the nexthop notification chain is the
VXLAN driver. Subsequent patches will add more listeners (e.g., device
drivers such as netdevsim) that need to be able to block when processing
notifications.

Therefore, convert the notification chain to a blocking one. This is
safe as notifications are always emitted from process context.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-15 16:31:17 -07:00

19 lines
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C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* nexthops in net namespaces
*/
#ifndef __NETNS_NEXTHOP_H__
#define __NETNS_NEXTHOP_H__
#include <linux/rbtree.h>
struct netns_nexthop {
struct rb_root rb_root; /* tree of nexthops by id */
struct hlist_head *devhash; /* nexthops by device */
unsigned int seq; /* protected by rtnl_mutex */
u32 last_id_allocated;
struct blocking_notifier_head notifier_chain;
};
#endif