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iproute2: Add ll_index_to_addr function

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After calling ll_init_map, all of the information stored in the link-layer map
can be retrieved by function calls (ll_index_to_*), except for the link-layer
address. This patch fills the gap by adding a ll_index_to_addr function.
Changes welcome.

Signed-off-by: David Ward <david.ward@ll.mit.edu>
This commit is contained in:
David Ward 2009-10-15 14:53:13 -04:00 committed by Stephen Hemminger
parent 71e5815105
commit ee7ba9875d
2 changed files with 23 additions and 0 deletions
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2
include/ll_map.h
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@ -9,5 +9,7 @@ extern const char *ll_index_to_name(unsigned idx);
extern const char *ll_idx_n2a(unsigned idx, char *buf);
extern int ll_index_to_type(unsigned idx);
extern unsigned ll_index_to_flags(unsigned idx);
extern unsigned ll_index_to_addr(unsigned idx, unsigned char *addr,
unsigned alen);
#endif /* __LL_MAP_H__ */

21
lib/ll_map.c
View File

@ -134,6 +134,27 @@ unsigned ll_index_to_flags(unsigned idx)
return 0;
}
unsigned ll_index_to_addr(unsigned idx, unsigned char *addr,
unsigned alen)
{
struct idxmap *im;
if (idx == 0)
return 0;
for (im = idxmap[idx&0xF]; im; im = im->next) {
if (im->index == idx) {
if (alen > sizeof(im->addr))
alen = sizeof(im->addr);
if (alen > im->alen)
alen = im->alen;
memcpy(addr, im->addr, alen);
return alen;
}
}
return 0;
}
unsigned ll_name_to_index(const char *name)
{
static char ncache[16];