summaryrefslogtreecommitdiff
path: root/net/ipv4/nexthop.c
diff options
context:
space:
mode:
authorPetr Machata <petrm@nvidia.com>2021-01-28 13:49:20 +0100
committerJakub Kicinski <kuba@kernel.org>2021-01-28 20:49:53 -0800
commitb9ebea127661e8982c03065d99422dbf0f73e4d1 (patch)
treed6f7ddf65e5e2f6ecd4999fa94b04e120e9e1dfd /net/ipv4/nexthop.c
parent56450ec6b7fc2824d6402fc3a60bff1a6fe32c04 (diff)
nexthop: Extract a common helper for parsing dump attributes
Requests to dump nexthops have many attributes in common with those that requests to dump buckets of resilient NH groups will have. However, they have different policies. To allow reuse of this code, extract a policy-agnostic wrapper out of nh_valid_dump_req(), and convert this function into a thin wrapper around it. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/nexthop.c')
-rw-r--r--net/ipv4/nexthop.c31
1 files changed, 19 insertions, 12 deletions
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index ad48e5d71bf9..1c4f10fe3b4e 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -2015,22 +2015,13 @@ static bool nh_dump_filtered(struct nexthop *nh,
return false;
}
-static int nh_valid_dump_req(const struct nlmsghdr *nlh,
- struct nh_dump_filter *filter,
- struct netlink_callback *cb)
+static int __nh_valid_dump_req(const struct nlmsghdr *nlh, struct nlattr **tb,
+ struct nh_dump_filter *filter,
+ struct netlink_ext_ack *extack)
{
- struct netlink_ext_ack *extack = cb->extack;
- struct nlattr *tb[ARRAY_SIZE(rtm_nh_policy_dump)];
struct nhmsg *nhm;
- int err;
u32 idx;
- err = nlmsg_parse(nlh, sizeof(*nhm), tb,
- ARRAY_SIZE(rtm_nh_policy_dump) - 1,
- rtm_nh_policy_dump, NULL);
- if (err < 0)
- return err;
-
if (tb[NHA_OIF]) {
idx = nla_get_u32(tb[NHA_OIF]);
if (idx > INT_MAX) {
@@ -2059,6 +2050,22 @@ static int nh_valid_dump_req(const struct nlmsghdr *nlh,
return 0;
}
+static int nh_valid_dump_req(const struct nlmsghdr *nlh,
+ struct nh_dump_filter *filter,
+ struct netlink_callback *cb)
+{
+ struct nlattr *tb[ARRAY_SIZE(rtm_nh_policy_dump)];
+ int err;
+
+ err = nlmsg_parse(nlh, sizeof(struct nhmsg), tb,
+ ARRAY_SIZE(rtm_nh_policy_dump) - 1,
+ rtm_nh_policy_dump, cb->extack);
+ if (err < 0)
+ return err;
+
+ return __nh_valid_dump_req(nlh, tb, filter, cb->extack);
+}
+
/* rtnl */
static int rtm_dump_nexthop(struct sk_buff *skb, struct netlink_callback *cb)
{