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libceph: primary_affinity decode bits 

Add two helpers to decode primary_affinity (full map, vector<u32>) and
new_primary_affinity (inc map, map<u32, u32>) and switch to them.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
hifive-unleashed-5.1
Ilya Dryomov 2014-03-21 19:05:30 +02:00 committed by Sage Weil
parent 2cfa34f2d6
commit 63a6993f52
1 changed files with 72 additions and 0 deletions
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72
net/ceph/osdmap.c
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@ -959,6 +959,60 @@ static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff)
return 0;
}
static int decode_primary_affinity(void **p, void *end,
struct ceph_osdmap *map)
{
u32 len, i;
ceph_decode_32_safe(p, end, len, e_inval);
if (len == 0) {
kfree(map->osd_primary_affinity);
map->osd_primary_affinity = NULL;
return 0;
}
if (len != map->max_osd)
goto e_inval;
ceph_decode_need(p, end, map->max_osd*sizeof(u32), e_inval);
for (i = 0; i < map->max_osd; i++) {
int ret;
ret = set_primary_affinity(map, i, ceph_decode_32(p));
if (ret)
return ret;
}
return 0;
e_inval:
return -EINVAL;
}
static int decode_new_primary_affinity(void **p, void *end,
struct ceph_osdmap *map)
{
u32 n;
ceph_decode_32_safe(p, end, n, e_inval);
while (n--) {
u32 osd, aff;
int ret;
ceph_decode_32_safe(p, end, osd, e_inval);
ceph_decode_32_safe(p, end, aff, e_inval);
ret = set_primary_affinity(map, osd, aff);
if (ret)
return ret;
}
return 0;
e_inval:
return -EINVAL;
}
/*
* decode a full map.
*/
@ -1042,6 +1096,17 @@ static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
goto bad;
}
/* primary_affinity */
if (struct_v >= 2) {
err = decode_primary_affinity(p, end, map);
if (err)
goto bad;
} else {
/* XXX can this happen? */
kfree(map->osd_primary_affinity);
map->osd_primary_affinity = NULL;
}
/* crush */
ceph_decode_32_safe(p, end, len, e_inval);
map->crush = crush_decode(*p, min(*p + len, end));
@ -1249,6 +1314,13 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
goto bad;
}
/* new_primary_affinity */
if (struct_v >= 2) {
err = decode_new_primary_affinity(p, end, map);
if (err)
goto bad;
}
/* ignore the rest */
*p = end;