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nexthops: Move code from remove_nexthop_from_groups to remove_nh_grp_entry 

Move nh_grp dereference and check for removing nexthop group due to
all members gone into remove_nh_grp_entry.

Fixes: 430a049190 ("nexthop: Add support for nexthop groups")
Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2020-05-26 12:56:14 -06:00 committed by David S. Miller
parent 963bdfc75c
commit ac21753a5c
1 changed files with 13 additions and 14 deletions
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27
net/ipv4/nexthop.c
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@ -694,17 +694,21 @@ static void nh_group_rebalance(struct nh_group *nhg)
}
}
static void remove_nh_grp_entry(struct nh_grp_entry *nhge,
struct nh_group *nhg,
static void remove_nh_grp_entry(struct net *net, struct nh_grp_entry *nhge,
struct nl_info *nlinfo)
{
struct nexthop *nhp = nhge->nh_parent;
struct nexthop *nh = nhge->nh;
struct nh_grp_entry *nhges;
struct nh_group *nhg;
bool found = false;
int i;
WARN_ON(!nh);
list_del(&nhge->nh_list);
nhg = rtnl_dereference(nhp->nh_grp);
nhges = nhg->nh_entries;
for (i = 0; i < nhg->num_nh; ++i) {
if (found) {
@ -728,7 +732,11 @@ static void remove_nh_grp_entry(struct nh_grp_entry *nhge,
nexthop_put(nh);
if (nlinfo)
nexthop_notify(RTM_NEWNEXTHOP, nhge->nh_parent, nlinfo);
nexthop_notify(RTM_NEWNEXTHOP, nhp, nlinfo);
/* if this group has no more entries then remove it */
if (!nhg->num_nh)
remove_nexthop(net, nhp, nlinfo);
}
static void remove_nexthop_from_groups(struct net *net, struct nexthop *nh,
@ -736,17 +744,8 @@ static void remove_nexthop_from_groups(struct net *net, struct nexthop *nh,
{
struct nh_grp_entry *nhge, *tmp;
list_for_each_entry_safe(nhge, tmp, &nh->grp_list, nh_list) {
struct nh_group *nhg;
list_del(&nhge->nh_list);
nhg = rtnl_dereference(nhge->nh_parent->nh_grp);
remove_nh_grp_entry(nhge, nhg, nlinfo);
/* if this group has no more entries then remove it */
if (!nhg->num_nh)
remove_nexthop(net, nhge->nh_parent, nlinfo);
}
list_for_each_entry_safe(nhge, tmp, &nh->grp_list, nh_list)
remove_nh_grp_entry(net, nhge, nlinfo);
}
static void remove_nexthop_group(struct nexthop *nh, struct nl_info *nlinfo)