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ipv6: Extend notifier info for multipath routes 

Extend the IPv6 FIB notifier info with number of sibling routes being
notified.

This will later allow listeners to process one notification for a
multipath routes instead of N, where N is the number of nexthops.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2019-06-18 18:12:45 +03:00 committed by David S. Miller
parent c82481f7ea
commit d4b96c7b51
2 changed files with 24 additions and 0 deletions
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7
include/net/ip6_fib.h
View File

@ -377,6 +377,8 @@ typedef struct rt6_info *(*pol_lookup_t)(struct net *,
struct fib6_entry_notifier_info { struct fib6_entry_notifier_info {
struct fib_notifier_info info; /* must be first */ struct fib_notifier_info info; /* must be first */
struct fib6_info *rt; struct fib6_info *rt;
unsigned int nsiblings;
bool multipath_rt;
}; };
/* /*
@ -450,6 +452,11 @@ int call_fib6_entry_notifiers(struct net *net,
enum fib_event_type event_type, enum fib_event_type event_type,
struct fib6_info *rt, struct fib6_info *rt,
struct netlink_ext_ack *extack); struct netlink_ext_ack *extack);
int call_fib6_multipath_entry_notifiers(struct net *net,
enum fib_event_type event_type,
struct fib6_info *rt,
unsigned int nsiblings,
struct netlink_ext_ack *extack);
void fib6_rt_update(struct net *net, struct fib6_info *rt, void fib6_rt_update(struct net *net, struct fib6_info *rt,
struct nl_info *info); struct nl_info *info);
void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info,

17
net/ipv6/ip6_fib.c
View File

@ -381,6 +381,23 @@ int call_fib6_entry_notifiers(struct net *net,
return call_fib6_notifiers(net, event_type, &info.info); return call_fib6_notifiers(net, event_type, &info.info);
} }
int call_fib6_multipath_entry_notifiers(struct net *net,
enum fib_event_type event_type,
struct fib6_info *rt,
unsigned int nsiblings,
struct netlink_ext_ack *extack)
{
struct fib6_entry_notifier_info info = {
.info.extack = extack,
.rt = rt,
.nsiblings = nsiblings,
.multipath_rt = true,
};
rt->fib6_table->fib_seq++;
return call_fib6_notifiers(net, event_type, &info.info);
}
struct fib6_dump_arg { struct fib6_dump_arg {
struct net *net; struct net *net;
struct notifier_block *nb; struct notifier_block *nb;