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net: Add struct for fib dump filter

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Add struct fib_dump_filter for options on limiting which routes are
returned in a dump request. The current list is table id, protocol,
route type, rtm_flags and nexthop device index. struct net is needed
to lookup the net_device from the index.

Declare the filter for each route dump handler and plumb the new
arguments from dump handlers to ip_valid_fib_dump_req.

Signed-off-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
David Ahern 2018-10-15 18:56:42 -07:00 • committed by David S. Miller
commit 4724676d55
7 changed files with 37 additions and 11 deletions
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12
net/mpls/af_mpls.c
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@ -2032,13 +2032,15 @@ nla_put_failure:
}
#if IS_ENABLED(CONFIG_INET)
static int mpls_valid_fib_dump_req(const struct nlmsghdr *nlh,
static int mpls_valid_fib_dump_req(struct net *net, const struct nlmsghdr *nlh,
struct fib_dump_filter *filter,
struct netlink_ext_ack *extack)
{
return ip_valid_fib_dump_req(nlh, extack);
return ip_valid_fib_dump_req(net, nlh, filter, extack);
}
#else
static int mpls_valid_fib_dump_req(const struct nlmsghdr *nlh,
static int mpls_valid_fib_dump_req(struct net *net, const struct nlmsghdr *nlh,
struct fib_dump_filter *filter,
struct netlink_ext_ack *extack)
{
struct rtmsg *rtm;
@ -2070,14 +2072,16 @@ static int mpls_dump_routes(struct sk_buff *skb, struct netlink_callback *cb)
const struct nlmsghdr *nlh = cb->nlh;
struct net *net = sock_net(skb->sk);
struct mpls_route __rcu **platform_label;
struct fib_dump_filter filter = {};
size_t platform_labels;
unsigned int index;
ASSERT_RTNL();
if (cb->strict_check) {
int err = mpls_valid_fib_dump_req(nlh, cb->extack);
int err;
err = mpls_valid_fib_dump_req(net, nlh, &filter, cb->extack);
if (err < 0)
return err;
}