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authorIlya Dryomov <idryomov@gmail.com>2020-10-30 13:30:51 +0100
committerIlya Dryomov <idryomov@gmail.com>2020-12-14 23:21:50 +0100
commita5cbd5fc22d5043a8a76e15d75d031fe24d1f69c (patch)
tree2379298419dcbfaddef2d7bbd1cba86ba68c8bd4 /net/ceph
parent8921f25116af3081fb56871feb93f2dcaf52c722 (diff)
downloadlinux-next-a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c.tar.gz
libceph, ceph: get and handle cluster maps with addrvecs
In preparation for msgr2, make the cluster send us maps with addrvecs including both LEGACY and MSGR2 addrs instead of a single LEGACY addr. This means advertising support for SERVER_NAUTILUS and also some older features: SERVER_MIMIC, MONENC and MONNAMES. MONNAMES and MONENC are actually pre-argonaut, we just never updated ceph_monmap_decode() for them. Decoding is unconditional, see commit 23c625ce3065 ("libceph: assume argonaut on the server side"). SERVER_MIMIC doesn't bear any meaning for the kernel client. Since ceph_decode_entity_addrvec() is guarded by encoding version checks (and in msgr2 case it is guarded implicitly by the fact that server is speaking msgr2), we assume MSG_ADDR2 for it. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net/ceph')
-rw-r--r--net/ceph/decode.c56
-rw-r--r--net/ceph/mon_client.c145
-rw-r--r--net/ceph/osd_client.c4
-rw-r--r--net/ceph/osdmap.c45
4 files changed, 195 insertions, 55 deletions
diff --git a/net/ceph/decode.c b/net/ceph/decode.c
index eea529595a7a..6429b6713507 100644
--- a/net/ceph/decode.c
+++ b/net/ceph/decode.c
@@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
+#include <linux/ceph/ceph_debug.h>
#include <linux/ceph/decode.h>
@@ -82,3 +83,58 @@ bad:
}
EXPORT_SYMBOL(ceph_decode_entity_addr);
+/*
+ * Return addr of desired type (MSGR2 or LEGACY) or error.
+ * Make sure there is only one match.
+ *
+ * Assume encoding with MSG_ADDR2.
+ */
+int ceph_decode_entity_addrvec(void **p, void *end, bool msgr2,
+ struct ceph_entity_addr *addr)
+{
+ __le32 my_type = msgr2 ? CEPH_ENTITY_ADDR_TYPE_MSGR2 :
+ CEPH_ENTITY_ADDR_TYPE_LEGACY;
+ struct ceph_entity_addr tmp_addr;
+ int addr_cnt;
+ bool found;
+ u8 marker;
+ int ret;
+ int i;
+
+ ceph_decode_8_safe(p, end, marker, e_inval);
+ if (marker != 2) {
+ pr_err("bad addrvec marker %d\n", marker);
+ return -EINVAL;
+ }
+
+ ceph_decode_32_safe(p, end, addr_cnt, e_inval);
+
+ found = false;
+ for (i = 0; i < addr_cnt; i++) {
+ ret = ceph_decode_entity_addr(p, end, &tmp_addr);
+ if (ret)
+ return ret;
+
+ if (tmp_addr.type == my_type) {
+ if (found) {
+ pr_err("another match of type %d in addrvec\n",
+ le32_to_cpu(my_type));
+ return -EINVAL;
+ }
+
+ memcpy(addr, &tmp_addr, sizeof(*addr));
+ found = true;
+ }
+ }
+ if (!found && addr_cnt != 0) {
+ pr_err("no match of type %d in addrvec\n",
+ le32_to_cpu(my_type));
+ return -ENOENT;
+ }
+
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+EXPORT_SYMBOL(ceph_decode_entity_addrvec);
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index ebfecf8d0918..a9754a7fa78c 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -36,57 +36,122 @@ static const struct ceph_connection_operations mon_con_ops;
static int __validate_auth(struct ceph_mon_client *monc);
+static int decode_mon_info(void **p, void *end, bool msgr2,
+ struct ceph_entity_addr *addr)
+{
+ void *mon_info_end;
+ u32 struct_len;
+ u8 struct_v;
+ int ret;
+
+ ret = ceph_start_decoding(p, end, 1, "mon_info_t", &struct_v,
+ &struct_len);
+ if (ret)
+ return ret;
+
+ mon_info_end = *p + struct_len;
+ ceph_decode_skip_string(p, end, e_inval); /* skip mon name */
+ ret = ceph_decode_entity_addrvec(p, end, msgr2, addr);
+ if (ret)
+ return ret;
+
+ *p = mon_info_end;
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
/*
* Decode a monmap blob (e.g., during mount).
+ *
+ * Assume MonMap v3 (i.e. encoding with MONNAMES and MONENC).
*/
-static struct ceph_monmap *ceph_monmap_decode(void *p, void *end)
+static struct ceph_monmap *ceph_monmap_decode(void **p, void *end, bool msgr2)
{
- struct ceph_monmap *m = NULL;
- int i, err = -EINVAL;
+ struct ceph_monmap *monmap = NULL;
struct ceph_fsid fsid;
- u32 epoch, num_mon;
- u32 len;
+ u32 struct_len;
+ int blob_len;
+ int num_mon;
+ u8 struct_v;
+ u32 epoch;
+ int ret;
+ int i;
+
+ ceph_decode_32_safe(p, end, blob_len, e_inval);
+ ceph_decode_need(p, end, blob_len, e_inval);
+
+ ret = ceph_start_decoding(p, end, 6, "monmap", &struct_v, &struct_len);
+ if (ret)
+ goto fail;
+
+ dout("%s struct_v %d\n", __func__, struct_v);
+ ceph_decode_copy_safe(p, end, &fsid, sizeof(fsid), e_inval);
+ ceph_decode_32_safe(p, end, epoch, e_inval);
+ if (struct_v >= 6) {
+ u32 feat_struct_len;
+ u8 feat_struct_v;
- ceph_decode_32_safe(&p, end, len, bad);
- ceph_decode_need(&p, end, len, bad);
+ *p += sizeof(struct ceph_timespec); /* skip last_changed */
+ *p += sizeof(struct ceph_timespec); /* skip created */
- dout("monmap_decode %p %p len %d (%d)\n", p, end, len, (int)(end-p));
- p += sizeof(u16); /* skip version */
+ ret = ceph_start_decoding(p, end, 1, "mon_feature_t",
+ &feat_struct_v, &feat_struct_len);
+ if (ret)
+ goto fail;
- ceph_decode_need(&p, end, sizeof(fsid) + 2*sizeof(u32), bad);
- ceph_decode_copy(&p, &fsid, sizeof(fsid));
- epoch = ceph_decode_32(&p);
+ *p += feat_struct_len; /* skip persistent_features */
- num_mon = ceph_decode_32(&p);
+ ret = ceph_start_decoding(p, end, 1, "mon_feature_t",
+ &feat_struct_v, &feat_struct_len);
+ if (ret)
+ goto fail;
+ *p += feat_struct_len; /* skip optional_features */
+ }
+ ceph_decode_32_safe(p, end, num_mon, e_inval);
+
+ dout("%s fsid %pU epoch %u num_mon %d\n", __func__, &fsid, epoch,
+ num_mon);
if (num_mon > CEPH_MAX_MON)
- goto bad;
- m = kmalloc(struct_size(m, mon_inst, num_mon), GFP_NOFS);
- if (m == NULL)
- return ERR_PTR(-ENOMEM);
- m->fsid = fsid;
- m->epoch = epoch;
- m->num_mon = num_mon;
- for (i = 0; i < num_mon; ++i) {
- struct ceph_entity_inst *inst = &m->mon_inst[i];
-
- /* copy name portion */
- ceph_decode_copy_safe(&p, end, &inst->name,
- sizeof(inst->name), bad);
- err = ceph_decode_entity_addr(&p, end, &inst->addr);
- if (err)
- goto bad;
+ goto e_inval;
+
+ monmap = kmalloc(struct_size(monmap, mon_inst, num_mon), GFP_NOIO);
+ if (!monmap) {
+ ret = -ENOMEM;
+ goto fail;
}
- dout("monmap_decode epoch %d, num_mon %d\n", m->epoch,
- m->num_mon);
- for (i = 0; i < m->num_mon; i++)
- dout("monmap_decode mon%d is %s\n", i,
- ceph_pr_addr(&m->mon_inst[i].addr));
- return m;
-bad:
- dout("monmap_decode failed with %d\n", err);
- kfree(m);
- return ERR_PTR(err);
+ monmap->fsid = fsid;
+ monmap->epoch = epoch;
+ monmap->num_mon = num_mon;
+
+ /* legacy_mon_addr map or mon_info map */
+ for (i = 0; i < num_mon; i++) {
+ struct ceph_entity_inst *inst = &monmap->mon_inst[i];
+
+ ceph_decode_skip_string(p, end, e_inval); /* skip mon name */
+ inst->name.type = CEPH_ENTITY_TYPE_MON;
+ inst->name.num = cpu_to_le64(i);
+
+ if (struct_v >= 6)
+ ret = decode_mon_info(p, end, msgr2, &inst->addr);
+ else
+ ret = ceph_decode_entity_addr(p, end, &inst->addr);
+ if (ret)
+ goto fail;
+
+ dout("%s mon%d addr %s\n", __func__, i,
+ ceph_pr_addr(&inst->addr));
+ }
+
+ return monmap;
+
+e_inval:
+ ret = -EINVAL;
+fail:
+ kfree(monmap);
+ return ERR_PTR(ret);
}
/*
@@ -476,7 +541,7 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
p = msg->front.iov_base;
end = p + msg->front.iov_len;
- monmap = ceph_monmap_decode(p, end);
+ monmap = ceph_monmap_decode(&p, end, false);
if (IS_ERR(monmap)) {
pr_err("problem decoding monmap, %d\n",
(int)PTR_ERR(monmap));
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 8966eae543d3..51be5a7482fc 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -3918,9 +3918,9 @@ static int handle_one_map(struct ceph_osd_client *osdc,
set_pool_was_full(osdc);
if (incremental)
- newmap = osdmap_apply_incremental(&p, end, osdc->osdmap);
+ newmap = osdmap_apply_incremental(&p, end, false, osdc->osdmap);
else
- newmap = ceph_osdmap_decode(&p, end);
+ newmap = ceph_osdmap_decode(&p, end, false);
if (IS_ERR(newmap))
return PTR_ERR(newmap);
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index fa08c15be0c0..2b1dd252f231 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1647,7 +1647,8 @@ static int decode_old_pg_upmap_items(void **p, void *end,
/*
* decode a full map.
*/
-static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
+static int osdmap_decode(void **p, void *end, bool msgr2,
+ struct ceph_osdmap *map)
{
u8 struct_v;
u32 epoch = 0;
@@ -1718,9 +1719,16 @@ static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
goto e_inval;
for (i = 0; i < map->max_osd; i++) {
- err = ceph_decode_entity_addr(p, end, &map->osd_addr[i]);
+ struct ceph_entity_addr *addr = &map->osd_addr[i];
+
+ if (struct_v >= 8)
+ err = ceph_decode_entity_addrvec(p, end, msgr2, addr);
+ else
+ err = ceph_decode_entity_addr(p, end, addr);
if (err)
goto bad;
+
+ dout("%s osd%d addr %s\n", __func__, i, ceph_pr_addr(addr));
}
/* pg_temp */
@@ -1790,7 +1798,7 @@ bad:
/*
* Allocate and decode a full map.
*/
-struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end)
+struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end, bool msgr2)
{
struct ceph_osdmap *map;
int ret;
@@ -1799,7 +1807,7 @@ struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end)
if (!map)
return ERR_PTR(-ENOMEM);
- ret = osdmap_decode(p, end, map);
+ ret = osdmap_decode(p, end, msgr2, map);
if (ret) {
ceph_osdmap_destroy(map);
return ERR_PTR(ret);
@@ -1817,12 +1825,13 @@ struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end)
* new_state: { osd=6, xorstate=EXISTS } # clear osd_state
*/
static int decode_new_up_state_weight(void **p, void *end, u8 struct_v,
- struct ceph_osdmap *map)
+ bool msgr2, struct ceph_osdmap *map)
{
void *new_up_client;
void *new_state;
void *new_weight_end;
u32 len;
+ int ret;
int i;
new_up_client = *p;
@@ -1831,8 +1840,12 @@ static int decode_new_up_state_weight(void **p, void *end, u8 struct_v,
struct ceph_entity_addr addr;
ceph_decode_skip_32(p, end, e_inval);
- if (ceph_decode_entity_addr(p, end, &addr))
- goto e_inval;
+ if (struct_v >= 7)
+ ret = ceph_decode_entity_addrvec(p, end, msgr2, &addr);
+ else
+ ret = ceph_decode_entity_addr(p, end, &addr);
+ if (ret)
+ return ret;
}
new_state = *p;
@@ -1874,7 +1887,6 @@ static int decode_new_up_state_weight(void **p, void *end, u8 struct_v,
while (len--) {
s32 osd;
u32 xorstate;
- int ret;
osd = ceph_decode_32(p);
if (struct_v >= 5)
@@ -1910,8 +1922,15 @@ static int decode_new_up_state_weight(void **p, void *end, u8 struct_v,
osd = ceph_decode_32(p);
BUG_ON(osd >= map->max_osd);
- if (ceph_decode_entity_addr(p, end, &addr))
- goto e_inval;
+ if (struct_v >= 7)
+ ret = ceph_decode_entity_addrvec(p, end, msgr2, &addr);
+ else
+ ret = ceph_decode_entity_addr(p, end, &addr);
+ if (ret)
+ return ret;
+
+ dout("%s osd%d addr %s\n", __func__, osd, ceph_pr_addr(&addr));
+
pr_info("osd%d up\n", osd);
map->osd_state[osd] |= CEPH_OSD_EXISTS | CEPH_OSD_UP;
map->osd_addr[osd] = addr;
@@ -1927,7 +1946,7 @@ e_inval:
/*
* decode and apply an incremental map update.
*/
-struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
+struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, bool msgr2,
struct ceph_osdmap *map)
{
struct ceph_fsid fsid;
@@ -1962,7 +1981,7 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
if (len > 0) {
dout("apply_incremental full map len %d, %p to %p\n",
len, *p, end);
- return ceph_osdmap_decode(p, min(*p+len, end));
+ return ceph_osdmap_decode(p, min(*p+len, end), msgr2);
}
/* new crush? */
@@ -2014,7 +2033,7 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
}
/* new_up_client, new_state, new_weight */
- err = decode_new_up_state_weight(p, end, struct_v, map);
+ err = decode_new_up_state_weight(p, end, struct_v, msgr2, map);
if (err)
goto bad;