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authorFlorian Westphal <fw@strlen.de>2017-01-09 14:20:47 +0100
committerSteffen Klassert <steffen.klassert@secunet.com>2017-01-10 10:57:13 +0100
commitaf5d27c4e12b804c065c0e7c87507fea5683dab4 (patch)
treefaa3ae6367d0d92614dd21706fcfd09509c787e9 /net/xfrm
parent423826a7b104724a16676a75d597a35d3bdb18b8 (diff)
downloadlinux-af5d27c4e12b804c065c0e7c87507fea5683dab4.tar.bz2
xfrm: remove xfrm_state_put_afinfo
commit 44abdc3047aecafc141dfbaf1ed ("xfrm: replace rwlock on xfrm_state_afinfo with rcu") made xfrm_state_put_afinfo equivalent to rcu_read_unlock. Use spatch to replace it with direct calls to rcu_read_unlock: @@ struct xfrm_state_afinfo *a; @@ - xfrm_state_put_afinfo(a); + rcu_read_unlock(); old: text data bss dec hex filename 22570 72 424 23066 5a1a xfrm_state.o 1612 0 0 1612 64c xfrm_output.o new: 22554 72 424 23050 5a0a xfrm_state.o 1596 0 0 1596 63c xfrm_output.o Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_output.c8
-rw-r--r--net/xfrm/xfrm_state.c31
2 files changed, 16 insertions, 23 deletions
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 637387bbaaea..8ba29fe58352 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -246,10 +246,8 @@ void xfrm_local_error(struct sk_buff *skb, int mtu)
return;
afinfo = xfrm_state_get_afinfo(proto);
- if (!afinfo)
- return;
-
- afinfo->local_error(skb, mtu);
- xfrm_state_put_afinfo(afinfo);
+ if (afinfo)
+ afinfo->local_error(skb, mtu);
+ rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(xfrm_local_error);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 57e9578c35e2..783084484582 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -192,7 +192,7 @@ int xfrm_register_type(const struct xfrm_type *type, unsigned short family)
else
err = -EEXIST;
spin_unlock_bh(&xfrm_type_lock);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_register_type);
@@ -213,7 +213,7 @@ int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family)
else
typemap[type->proto] = NULL;
spin_unlock_bh(&xfrm_type_lock);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_unregister_type);
@@ -235,13 +235,13 @@ retry:
if (unlikely(type && !try_module_get(type->owner)))
type = NULL;
if (!type && !modload_attempted) {
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
request_module("xfrm-type-%d-%d", family, proto);
modload_attempted = 1;
goto retry;
}
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return type;
}
@@ -280,7 +280,7 @@ int xfrm_register_mode(struct xfrm_mode *mode, int family)
out:
spin_unlock_bh(&xfrm_mode_lock);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_register_mode);
@@ -308,7 +308,7 @@ int xfrm_unregister_mode(struct xfrm_mode *mode, int family)
}
spin_unlock_bh(&xfrm_mode_lock);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_unregister_mode);
@@ -331,13 +331,13 @@ retry:
if (unlikely(mode && !try_module_get(mode->owner)))
mode = NULL;
if (!mode && !modload_attempted) {
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
request_module("xfrm-mode-%d-%d", family, encap);
modload_attempted = 1;
goto retry;
}
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return mode;
}
@@ -651,13 +651,13 @@ xfrm_init_tempstate(struct xfrm_state *x, const struct flowi *fl,
afinfo->init_tempsel(&x->sel, fl);
if (family != tmpl->encap_family) {
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
afinfo = xfrm_state_get_afinfo(tmpl->encap_family);
if (!afinfo)
return -1;
}
afinfo->init_temprop(x, tmpl, daddr, saddr);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return 0;
}
@@ -1474,7 +1474,7 @@ xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n,
if (afinfo->tmpl_sort)
err = afinfo->tmpl_sort(dst, src, n);
spin_unlock_bh(&net->xfrm.xfrm_state_lock);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_tmpl_sort);
@@ -1494,7 +1494,7 @@ xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n,
if (afinfo->state_sort)
err = afinfo->state_sort(dst, src, n);
spin_unlock_bh(&net->xfrm.xfrm_state_lock);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_state_sort);
@@ -1978,11 +1978,6 @@ struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family)
return afinfo;
}
-void xfrm_state_put_afinfo(struct xfrm_state_afinfo *afinfo)
-{
- rcu_read_unlock();
-}
-
/* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
void xfrm_state_delete_tunnel(struct xfrm_state *x)
{
@@ -2025,7 +2020,7 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay)
if (afinfo->init_flags)
err = afinfo->init_flags(x);
- xfrm_state_put_afinfo(afinfo);
+ rcu_read_unlock();
if (err)
goto error;