Hello,
I am looking at decode_openflow10_action function at lib/ofp-actions.c. I
am trying to understand how the code is performed. I have been testing it,
but still no clue.
I provide, at the end, my "test code".
My problem is that I have created a custom action with type = 0x000d, and I
am trying to know why this action goes to the default part of the switch
statement, and other actions "go nowhere". I can explain. From the
controller, I create 3 rules (same rules for different ports) which
contains SET_SRC_MAC (type 0x0004) and my custom action (0x000d). At the
end, I provide the output of the test.
I would also like to know, when does the #define OFPAT10_ACTION(ENUM,
STRUCT, NAME) part occurs. It is after the return statement >.<"
Thank you, and sorry if this question is too simple, but I don't get how it
works.
Thanks again,
Raúl
--------------------- CODE ------------------------------------
// The real implementation does not have any file writing variable/function
static enum ofperr
decode_openflow10_action(const union ofp_action *a,
enum ofputil_action_code *code)
{
FILE *f;
f = fopen("/home/raul/file.txt", "ab+");
fprintf(f, ">ALL< 0x%x 0x%x (%d %d) (0x%x %d) (0x%x %d)\n", a->type,
a->header.len, a->type, a->header.len, OFPAT10_VENDOR,
OFPAT10_VENDOR,CONSTANT_HTONS(OFPAT10_VENDOR),CONSTANT_HTONS(OFPAT10_VENDOR));
fclose(f);
switch (a->type) {
case CONSTANT_HTONS(OFPAT10_VENDOR):
f = fopen("/home/raul/file.txt", "ab+");
fprintf(f, " >V< 0x%x 0x%x (%d %d) (0x%x %d) (0x%x %d)\n", a->type,
a->header.len, a->type, a->header.len, OFPAT10_VENDOR,
OFPAT10_VENDOR,CONSTANT_HTONS(OFPAT10_VENDOR),CONSTANT_HTONS(OFPAT10_VENDOR));
fclose(f);
return decode_nxast_action(a, code);
#define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
case CONSTANT_HTONS(ENUM): \
if (a->header.len == htons(sizeof(struct STRUCT))) { \
*code = OFPUTIL_##ENUM; \
return 0; \
} else { \
return OFPERR_OFPBAC_BAD_LEN; \
} \
break;
#include "ofp-util.def"
f = fopen("/home/raul/file.txt", "ab+");
fprintf(f, " >WTF< 0x%x 0x%x (%d %d) (0x%x %d) (0x%x %d)\n", a->type,
a->header.len, a->type, a->header.len, OFPAT10_VENDOR,
OFPAT10_VENDOR,CONSTANT_HTONS(OFPAT10_VENDOR),CONSTANT_HTONS(OFPAT10_VENDOR));
fclose(f);
/*case (0x0d00): something with htons? RAUL SUAREZ MARIN
*code = OFPUTIL_OFPAT10_SET_ESMC_SSM;
return 0;*/
default:
f = fopen("/home/raul/file.txt", "ab+");
fprintf(f, ">F< 0x%x 0x%x (%d %d) (0x%x %d) (0x%x %d)\n", a->type,
a->header.len, a->type, a->header.len, OFPAT10_VENDOR,
OFPAT10_VENDOR,CONSTANT_HTONS(OFPAT10_VENDOR),CONSTANT_HTONS(OFPAT10_VENDOR));
fclose(f);
return OFPERR_OFPBAC_BAD_TYPE;
}
}
---------------- OUTPUT OF THE TEST
----------------------------------------------
V = Verified => works fine
F = Failed
ALL = Everything
fprintf(f, ">F< 0x%x 0x%x (%d %d) (0x%x %d) (0x%x %d)\n", a->type,
a->header.len, a->type, a->header.len, OFPAT10_VENDOR,
OFPAT10_VENDOR,CONSTANT_HTONS(OFPAT10_VENDOR),CONSTANT_HTONS(OFPAT10_VENDOR));
>ALL< 0x0 0x800 (0 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x0 0x800 (0 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x0 0x800 (0 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x0 0x800 (0 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x0 0x800 (0 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x0 0x800 (0 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x400 0x1000 (1024 4096) (0xffff 65535) (0xffff 65535)
>ALL< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>F< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535) <------------
clearly, 0x000d failed
>ALL< 0x400 0x1000 (1024 4096) (0xffff 65535) (0xffff 65535) <------ what
happened to this, this dissapeared? Did not go neither to >V< nor >F<
>ALL< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>F< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x400 0x1000 (1024 4096) (0xffff 65535) (0xffff 65535)
>ALL< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>F< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x400 0x1000 (1024 4096) (0xffff 65535) (0xffff 65535)
>ALL< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>F< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x400 0x1000 (1024 4096) (0xffff 65535) (0xffff 65535)
>ALL< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>F< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>ALL< 0x400 0x1000 (1024 4096) (0xffff 65535) (0xffff 65535)
>ALL< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
>F< 0xd00 0x800 (3328 2048) (0xffff 65535) (0xffff 65535)
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