Code Rewriting (nothing new) and asking
I seriously wonder if 'that' is good in sys/net/if_bridge.c
if (flags == 0)
goto return_action;
Because if i m not wrong it could be rewritten this way (diff)
----------------------------------------------------------------------------------------------------------------------
Index: sys/net/if_bridge.c
===================================================================
RCS file: /cvs/src/sys/net/if_bridge.c,v
retrieving revision 1.193
diff -u -r1.193 if_bridge.c
--- sys/net/if_bridge.c 4 Jul 2011 06:54:49 -0000 1.193
+++ sys/net/if_bridge.c 29 Jun 2012 19:05:19 -0000
@@ -2208,29 +2208,17 @@
bridge_filterrule(struct brl_head *h, struct ether_header *eh, struct mbuf
*m)
{
struct brl_node *n;
- u_int8_t flags;
SIMPLEQ_FOREACH(n, h, brl_next) {
- flags = n->brl_flags &
(BRL_FLAG_SRCVALID|BRL_FLAG_DSTVALID);
- if (flags == 0)
- goto return_action;
- if (flags == (BRL_FLAG_SRCVALID|BRL_FLAG_DSTVALID)) {
+ if ( n->brl_flags & BRL_FLAG_SRCVALID ) {
if (bcmp(eh->ether_shost, &n->brl_src,
ETHER_ADDR_LEN))
- continue;
- if (bcmp(eh->ether_dhost, &n->brl_dst,
ETHER_ADDR_LEN))
- continue;
- goto return_action;
+ continue;
}
- if (flags == BRL_FLAG_SRCVALID) {
- if (bcmp(eh->ether_shost, &n->brl_src,
ETHER_ADDR_LEN))
+ if (n->brl_flags & BRL_FLAG_DSTVALID) {
+ if (bcmp(eh->ether_dhost, &n->brl_dst,
ETHER_ADDR_LEN))
continue;
- goto return_action;
- }
- if (flags == BRL_FLAG_DSTVALID) {
- if (bcmp(eh->ether_dhost, &n->brl_dst,
ETHER_ADDR_LEN))
- continue;
- goto return_action;
}
+ goto return_action;
}
return (BRL_ACTION_PASS);
------------------------------------------------------------------------------------------------------------------------
2012/6/29 sven falempin <[email protected]>
> 2012/6/29 Henning Brauer <[email protected]>
>
>> * Mike Belopuhov <[email protected]> [2012-06-29 13:46]:
>> > On Fri, Jun 29, 2012 at 1:36 PM, Henning Brauer
>> > <[email protected]> wrote:
>> > > now it's very unclear what your actual problem is - the struct is
>> > > called ifbreq and used in a number of places, most notably of course
>> > > the ioctls.
>> > he's trying to add patterns to the mac address matching code
>>
>> got that much ;)
>>
>> > and pretends to be done with the homework (:
>>
>> well... let's see wether we'll get a diff.
>>
>>
> is there a theory that '&' is more time consuming than ' =='
> because the flag use is weard
>
> Must .. compile ... all .. kernel .... :( (Am i right ?)
>
>
>> --
>> Henning Brauer, [email protected], [email protected]
>> BS Web Services, http://bsws.de, Full-Service ISP
>> Secure Hosting, Mail and DNS Services. Dedicated Servers, Root to Fully
>> Managed
>> Henning Brauer Consulting, http://henningbrauer.com/
>>
>>
>
>
> --
>
> ---------------------------------------------------------------------------------------------------------------------
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>
>
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