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net: Plumb support for filtering ipv4 and ipv6 multicast route dumps

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Implement kernel side filtering of routes by egress device index and
table id. If the table id is given in the filter, lookup table and
call mr_table_dump directly for it.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2018-10-15 18:56:47 -07:00
committed by David S. Miller
parent e1cedae1ba
commit cb167893f4
4 changed files with 74 additions and 12 deletions
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7
include/linux/mroute_base.h
View File

@@ -7,6 +7,7 @@
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/fib_notifier.h>
#include <net/ip_fib.h>
/**
* struct vif_device - interface representor for multicast routing
@@ -288,7 +289,7 @@ int mr_table_dump(struct mr_table *mrt, struct sk_buff *skb,
int (*fill)(struct mr_table *mrt, struct sk_buff *skb,
u32 portid, u32 seq, struct mr_mfc *c,
int cmd, int flags),
spinlock_t *lock);
spinlock_t *lock, struct fib_dump_filter *filter);
int mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb,
struct mr_table *(*iter)(struct net *net,
struct mr_table *mrt),
@@ -296,7 +297,7 @@ int mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb,
struct sk_buff *skb,
u32 portid, u32 seq, struct mr_mfc *c,
int cmd, int flags),
spinlock_t *lock);
spinlock_t *lock, struct fib_dump_filter *filter);
int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family,
int (*rules_dump)(struct net *net,
@@ -346,7 +347,7 @@ mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb,
struct sk_buff *skb,
u32 portid, u32 seq, struct mr_mfc *c,
int cmd, int flags),
spinlock_t *lock)
spinlock_t *lock, struct fib_dump_filter *filter)
{
return -EINVAL;
}