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| author | Yuval Mintz <yuvalm@mellanox.com> | 2018-03-26 15:01:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-26 13:14:43 -0400 |
| commit | 8c13af2a219c6498071b30ea558438c74267ae4d (patch) | |
| tree | 747dd0d7e4eb618fbacc0cbf27e7900d95618b75 /net | |
| parent | d3c07e5b9939a055fa017f200e535ae947eb22ab (diff) | |
| download | linux-stable-8c13af2a219c6498071b30ea558438c74267ae4d.tar.gz linux-stable-8c13af2a219c6498071b30ea558438c74267ae4d.tar.bz2 linux-stable-8c13af2a219c6498071b30ea558438c74267ae4d.zip | |
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')
| -rw-r--r-- | net/ipv4/ipmr.c | 8 | ||||
| -rw-r--r-- | net/ipv6/ip6mr.c | 6 |
2 files changed, 8 insertions, 6 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 24c340021aba..e79211a8537c 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -732,11 +732,10 @@ static void ipmr_cache_free_rcu(struct rcu_head *head) kmem_cache_free(mrt_cachep, (struct mfc_cache *)c); } -void ipmr_cache_free(struct mfc_cache *c) +static void ipmr_cache_free(struct mfc_cache *c) { call_rcu(&c->_c.rcu, ipmr_cache_free_rcu); } -EXPORT_SYMBOL(ipmr_cache_free); /* Destroy an unresolved cache entry, killing queued skbs * and reporting error to netlink readers. @@ -987,6 +986,7 @@ static struct mfc_cache *ipmr_cache_alloc(void) if (c) { c->_c.mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1; c->_c.mfc_un.res.minvif = MAXVIFS; + c->_c.free = ipmr_cache_free_rcu; refcount_set(&c->_c.mfc_un.res.refcount, 1); } return c; @@ -1206,7 +1206,7 @@ static int ipmr_mfc_delete(struct mr_table *mrt, struct mfcctl *mfc, int parent) list_del_rcu(&c->_c.list); call_ipmr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, c, mrt->id); mroute_netlink_event(mrt, c, RTM_DELROUTE); - ipmr_cache_put(c); + mr_cache_put(&c->_c); return 0; } @@ -1318,7 +1318,7 @@ static void mroute_clean_tables(struct mr_table *mrt, bool all) call_ipmr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, cache, mrt->id); mroute_netlink_event(mrt, cache, RTM_DELROUTE); - ipmr_cache_put(cache); + mr_cache_put(c); } if (atomic_read(&mrt->cache_resolve_queue_len) != 0) { 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) { |