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authorYuval Mintz <yuvalm@mellanox.com>2018-03-26 15:01:36 +0300
committerDavid S. Miller <davem@davemloft.net>2018-03-26 13:14:43 -0400
commit8c13af2a219c6498071b30ea558438c74267ae4d (patch)
tree747dd0d7e4eb618fbacc0cbf27e7900d95618b75 /net/ipv6/ip6mr.c
parentd3c07e5b9939a055fa017f200e535ae947eb22ab (diff)
downloadlinux-8c13af2a219c6498071b30ea558438c74267ae4d.tar.bz2
ip6mr: Add refcounting to mfc
Since ipmr and ip6mr are using the same mr_mfc struct at their core, we can now refactor the ipmr_cache_{hold,put} logic and apply refcounting to both ipmr and ip6mr. Signed-off-by: Yuval Mintz <yuvalm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6mr.c')
-rw-r--r--net/ipv6/ip6mr.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index a187c523a95f..1c8fa29d155a 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -989,6 +989,8 @@ static struct mfc6_cache *ip6mr_cache_alloc(void)
return NULL;
c->_c.mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
c->_c.mfc_un.res.minvif = MAXMIFS;
+ c->_c.free = ip6mr_cache_free_rcu;
+ refcount_set(&c->_c.mfc_un.res.refcount, 1);
return c;
}
@@ -1227,7 +1229,7 @@ static int ip6mr_mfc_delete(struct mr_table *mrt, struct mf6cctl *mfc,
call_ip6mr_mfc_entry_notifiers(read_pnet(&mrt->net),
FIB_EVENT_ENTRY_DEL, c, mrt->id);
mr6_netlink_event(mrt, c, RTM_DELROUTE);
- ip6mr_cache_free(c);
+ mr_cache_put(&c->_c);
return 0;
}
@@ -1516,7 +1518,7 @@ static void mroute_clean_tables(struct mr_table *mrt, bool all)
rhltable_remove(&mrt->mfc_hash, &c->mnode, ip6mr_rht_params);
list_del_rcu(&c->list);
mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE);
- ip6mr_cache_free((struct mfc6_cache *)c);
+ mr_cache_put(c);
}
if (atomic_read(&mrt->cache_resolve_queue_len) != 0) {