linux/include/net/ipcomp.h
Tejun Heo 7d720c3e4f percpu: add __percpu sparse annotations to net
Add __percpu sparse annotations to net.

These annotations are to make sparse consider percpu variables to be
in a different address space and warn if accessed without going
through percpu accessors.  This patch doesn't affect normal builds.

The macro and type tricks around snmp stats make things a bit
interesting.  DEFINE/DECLARE_SNMP_STAT() macros mark the target field
as __percpu and SNMP_UPD_PO_STATS() macro is updated accordingly.  All
snmp_mib_*() users which used to cast the argument to (void **) are
updated to cast it to (void __percpu **).

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 23:05:38 -08:00

29 lines
620 B
C

#ifndef _NET_IPCOMP_H
#define _NET_IPCOMP_H
#include <linux/types.h>
#define IPCOMP_SCRATCH_SIZE 65400
struct crypto_comp;
struct ipcomp_data {
u16 threshold;
struct crypto_comp * __percpu *tfms;
};
struct ip_comp_hdr;
struct sk_buff;
struct xfrm_state;
int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb);
int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb);
void ipcomp_destroy(struct xfrm_state *x);
int ipcomp_init_state(struct xfrm_state *x);
static inline struct ip_comp_hdr *ip_comp_hdr(const struct sk_buff *skb)
{
return (struct ip_comp_hdr *)skb_transport_header(skb);
}
#endif