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| author | Tom Herbert <tom@herbertland.com> | 2016-10-14 11:25:36 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-15 17:33:41 -0400 |
| commit | 1104d9ba443a3972052ea4eaa01e51f9ee084652 (patch) | |
| tree | 3541ac4778bb5286fb77c7eed4c9ac914fd96ad4 /net/core/lwtunnel.c | |
| parent | 02dc7658c711e5cb099db476c501ce898591bfc9 (diff) | |
| download | linux-stable-1104d9ba443a3972052ea4eaa01e51f9ee084652.tar.gz linux-stable-1104d9ba443a3972052ea4eaa01e51f9ee084652.tar.bz2 linux-stable-1104d9ba443a3972052ea4eaa01e51f9ee084652.zip | |
lwtunnel: Add destroy state operation
Users of lwt tunnels may set up some secondary state in build_state
function. Add a corresponding destroy_state function to allow users to
clean up state. This destroy state function is called from lwstate_free.
Also, we now free lwstate using kfree_rcu so user can assume structure
is not freed before rcu.
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/lwtunnel.c')
| -rw-r--r-- | net/core/lwtunnel.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c index e5f84c26ba1a..88fd64250b02 100644 --- a/net/core/lwtunnel.c +++ b/net/core/lwtunnel.c @@ -130,6 +130,19 @@ int lwtunnel_build_state(struct net_device *dev, u16 encap_type, } EXPORT_SYMBOL(lwtunnel_build_state); +void lwtstate_free(struct lwtunnel_state *lws) +{ + const struct lwtunnel_encap_ops *ops = lwtun_encaps[lws->type]; + + if (ops->destroy_state) { + ops->destroy_state(lws); + kfree_rcu(lws, rcu); + } else { + kfree(lws); + } +} +EXPORT_SYMBOL(lwtstate_free); + int lwtunnel_fill_encap(struct sk_buff *skb, struct lwtunnel_state *lwtstate) { const struct lwtunnel_encap_ops *ops; |