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Commit 83229aa5 authored by David S. Miller's avatar David S. Miller
Browse files

net: Add helper flowi4_init_output(). 



On-stack initialization via assignment of flow structures are
expensive because GCC emits a memset() to clear the entire
structure out no matter what.

Add a helper for ipv4 output flow key setup which we can use to avoid
the memset.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0a5c0475

include/net/flow.h

+21 −0
Original line number Diff line number Diff line
@@ -70,6 +70,27 @@ struct flowi4 { 
#define fl4_gre_key		uli.gre_key

};



static inline void flowi4_init_output(struct flowi4 *fl4, int oif,

				      __u32 mark, __u8 tos, __u8 scope,

				      __u8 proto, __u8 flags,

				      __be32 daddr, __be32 saddr,

				      __be16 dport, __be32 sport)

{

	fl4->flowi4_oif = oif;

	fl4->flowi4_iif = 0;

	fl4->flowi4_mark = mark;

	fl4->flowi4_tos = tos;

	fl4->flowi4_scope = scope;

	fl4->flowi4_proto = proto;

	fl4->flowi4_flags = flags;

	fl4->flowi4_secid = 0;

	fl4->daddr = daddr;

	fl4->saddr = saddr;

	fl4->fl4_sport = sport;

	fl4->fl4_dport = dport;

}

				      



struct flowi6 {

	struct flowi_common	__fl_common;

#define flowi6_oif		__fl_common.flowic_oif