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xfrm: fix xfrm_dev_event() missing when compile without CONFIG_XFRM_OFFLOAD

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In commit d77e38e612 ("xfrm: Add an IPsec hardware offloading API") we
make xfrm_device.o only compiled when enable option CONFIG_XFRM_OFFLOAD.
But this will make xfrm_dev_event() missing if we only enable default XFRM
options.

Then if we set down and unregister an interface with IPsec on it. there
will no xfrm_garbage_collect(), which will cause dev usage count hold and
get error like:

unregister_netdevice: waiting for <dev> to become free. Usage count = 4

Fixes: d77e38e612 ("xfrm: Add an IPsec hardware offloading API")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Hangbin Liu
2017-06-01 14:57:56 +08:00
committed by Steffen Klassert
parent b29794ec95
commit b81f884a54
3 changed files with 5 additions and 7 deletions
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7
include/net/xfrm.h
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@@ -1850,8 +1850,9 @@ static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb)
}
#endif
#ifdef CONFIG_XFRM_OFFLOAD
void __net_init xfrm_dev_init(void);
#ifdef CONFIG_XFRM_OFFLOAD
int validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features);
int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
struct xfrm_user_offload *xuo);
@@ -1877,10 +1878,6 @@ static inline void xfrm_dev_state_free(struct xfrm_state *x)
}
}
#else
static inline void __net_init xfrm_dev_init(void)
{
}
static inline int validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features)
{
return 0;