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4d77d2b567
Le lundi 28 novembre 2011 à 19:06 -0500, David Miller a écrit : > From: Dimitris Michailidis <dm@chelsio.com> > Date: Mon, 28 Nov 2011 08:25:39 -0800 > > >> +bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys > >> *flow) > >> +{ > >> + int poff, nhoff = skb_network_offset(skb); > >> + u8 ip_proto; > >> + u16 proto = skb->protocol; > > > > __be16 instead of u16 for proto? > > I'll take care of this when I apply these patches. ( CC trimmed ) Thanks David ! Here is a small patch to use one 64bit load/store on x86_64 instead of two 32bit load/stores. [PATCH net-next] flow_dissector: use a 64bit load/store gcc compiler is smart enough to use a single load/store if we memcpy(dptr, sptr, 8) on x86_64, regardless of CONFIG_CC_OPTIMIZE_FOR_SIZE In IP header, daddr immediately follows saddr, this wont change in the future. We only need to make sure our flow_keys (src,dst) fields wont break the rule. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
17 lines
319 B
C
17 lines
319 B
C
#ifndef _NET_FLOW_KEYS_H
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#define _NET_FLOW_KEYS_H
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struct flow_keys {
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/* (src,dst) must be grouped, in the same way than in IP header */
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__be32 src;
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__be32 dst;
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union {
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__be32 ports;
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__be16 port16[2];
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};
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u8 ip_proto;
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};
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extern bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow);
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#endif
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