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tc_util: introduce a function to print JSON/non-JSON masked numbers 

Introduce a function to print masked number with a different output for
JSON or non-JSON methods, as a pre-step towards printing numbers using
this common function.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Eli Britstein 2019-11-14 14:44:37 +02:00 committed by Stephen Hemminger
parent cc08619c3c
commit 04b215015b
2 changed files with 53 additions and 0 deletions
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51
tc/tc_util.c
View File

@ -915,6 +915,45 @@ compat_xstats:
*xstats = tb[TCA_XSTATS];
}
static void print_masked_type(__u32 type_max,
__u32 (*rta_getattr_type)(const struct rtattr *),
const char *name, struct rtattr *attr,
struct rtattr *mask_attr)
{
SPRINT_BUF(namefrm);
__u32 value, mask;
SPRINT_BUF(out);
size_t done;
if (!attr)
return;
value = rta_getattr_type(attr);
mask = mask_attr ? rta_getattr_type(mask_attr) : type_max;
if (is_json_context()) {
sprintf(namefrm, "\n %s %%u", name);
print_hu(PRINT_ANY, name, namefrm,
rta_getattr_type(attr));
if (mask != type_max) {
char mask_name[SPRINT_BSIZE-6];
sprintf(mask_name, "%s_mask", name);
print_string(PRINT_FP, NULL, "%s ", _SL_);
sprintf(namefrm, "%s %%u", mask_name);
print_hu(PRINT_ANY, mask_name, namefrm, mask);
}
} else {
done = sprintf(out, "%u", value);
if (mask != type_max)
sprintf(out + done, "/0x%x", mask);
print_string(PRINT_FP, NULL, "%s ", _SL_);
sprintf(namefrm, "%s %%s", name);
print_string(PRINT_ANY, name, namefrm, out);
}
}
void print_masked_u32(const char *name, struct rtattr *attr,
struct rtattr *mask_attr)
{
@ -958,3 +997,15 @@ void print_masked_u16(const char *name, struct rtattr *attr,
sprintf(namefrm, " %s %%s", name);
print_string(PRINT_ANY, name, namefrm, out);
}
static __u32 __rta_getattr_u8_u32(const struct rtattr *attr)
{
return rta_getattr_u8(attr);
}
void print_masked_u8(const char *name, struct rtattr *attr,
struct rtattr *mask_attr)
{
print_masked_type(UINT8_MAX, __rta_getattr_u8_u32, name, attr,
mask_attr);
}

2
tc/tc_util.h
View File

@ -131,4 +131,6 @@ void print_masked_u32(const char *name, struct rtattr *attr,
struct rtattr *mask_attr);
void print_masked_u16(const char *name, struct rtattr *attr,
struct rtattr *mask_attr);
void print_masked_u8(const char *name, struct rtattr *attr,
struct rtattr *mask_attr);
#endif