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Commit d25398df authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

net: avoid reloads in SNMP_UPD_PO_STATS 



Avoid two instructions to reload dev->nd_net->mib.ip_statistics pointer,
unsing a temp variable, in ip_rcv(), ip_output() paths for example.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9eb43e76

include/net/snmp.h

+6 −4
Original line number Diff line number Diff line
@@ -154,13 +154,15 @@ struct linux_xfrm_mib { 
 */

#define SNMP_UPD_PO_STATS(mib, basefield, addend)	\

	do { \

		this_cpu_inc(mib[0]->mibs[basefield##PKTS]);		\

		this_cpu_add(mib[0]->mibs[basefield##OCTETS], addend);	\

		__typeof__(*mib[0]->mibs) *ptr = mib[0]->mibs;	\

		this_cpu_inc(ptr[basefield##PKTS]);		\

		this_cpu_add(ptr[basefield##OCTETS], addend);	\

	} while (0)

#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend)	\

	do { \

		__this_cpu_inc(mib[0]->mibs[basefield##PKTS]);		\

		__this_cpu_add(mib[0]->mibs[basefield##OCTETS], addend);	\

		__typeof__(*mib[0]->mibs) *ptr = mib[0]->mibs;	\

		__this_cpu_inc(ptr[basefield##PKTS]);		\

		__this_cpu_add(ptr[basefield##OCTETS], addend);	\

	} while (0)