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FS-9775: Indentify local nodes, allow query to distingush local v remote

This commit is contained in:
colm 2016-12-09 19:18:40 -05:00 committed by Mike Jerris
parent 1642b36eae
commit 86d295ded1
3 changed files with 45 additions and 52 deletions
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4
libs/libks/src/dht/ks_dht.c
View File

@ -385,11 +385,11 @@ KS_DECLARE(ks_status_t) ks_dht_bind(ks_dht_t *dht, const ks_dht_nodeid_t *nodeid
// @todo initialize or add local nodeid to appropriate route table
if (ep->addr.family == AF_INET) {
if (!dht->rt_ipv4) {
ks_dhtrt_initroute(&dht->rt_ipv4, dht->pool, ep->nodeid);
ks_dhtrt_initroute(&dht->rt_ipv4, dht->pool);
}
} else {
if (!dht->rt_ipv6) {
ks_dhtrt_initroute(&dht->rt_ipv6, dht->pool, ep->nodeid);
ks_dhtrt_initroute(&dht->rt_ipv6, dht->pool);
}
}

10
libs/libks/src/dht/ks_dht.h
View File

@ -51,11 +51,15 @@ struct ks_dht_nodeid_s {
};
enum ipfamily { ifv4=AF_INET, ifv6=AF_INET6, ifboth=AF_INET+AF_INET6};
enum ks_dht_nodetype_t { ks_dht_remote_t=0x01,
ks_dht_local_t=0x02,
ks_dht_both_t=ks_dht_remote_t+ks_dht_local_t };
struct ks_dht_node_s {
ks_dht_nodeid_t nodeid;
ks_sockaddr_t addr;
enum ipfamily family; /* in: AF_INET or AF_INET6 or both */
enum ipfamily family; /* AF_INET or AF_INET6 */
enum ks_dht_nodetype_t type; /* local or remote */
ks_dhtrt_routetable_t* table;
};
@ -68,6 +72,7 @@ struct ks_dhtrt_routetable_s {
struct ks_dhtrt_querynodes_s {
ks_dht_nodeid_t nodeid; /* in: id to query */
enum ipfamily family; /* in: AF_INET or AF_INET6 or both */
enum ks_dht_nodetype_t type; /* remote, local, or both */
uint8_t max; /* in: maximum to return */
uint8_t count; /* out: number returned */
ks_dht_node_t* nodes[ KS_DHT_MESSAGE_QUERY_MAX_SIZE]; /* out: array of peers (ks_dht_node_t* nodes[incount]) */
@ -230,11 +235,12 @@ KS_DECLARE(ks_status_t) ks_dht_transaction_deinit(ks_dht_transaction_t *transact
* route table methods
*
*/
KS_DECLARE(ks_status_t) ks_dhtrt_initroute(ks_dhtrt_routetable_t **tableP, ks_pool_t *pool, ks_dht_nodeid_t nodeid);
KS_DECLARE(ks_status_t) ks_dhtrt_initroute(ks_dhtrt_routetable_t **tableP, ks_pool_t *pool);
KS_DECLARE(void) ks_dhtrt_deinitroute(ks_dhtrt_routetable_t **table);
KS_DECLARE(ks_status_t) ks_dhtrt_create_node(ks_dhtrt_routetable_t* table,
ks_dht_nodeid_t nodeid,
enum ks_dht_nodetype_t type,
char* ip, unsigned short port,
ks_dht_node_t** node);

83
libs/libks/src/dht/ks_dht_bucket.c
View File

@ -53,7 +53,8 @@ typedef uint8_t ks_dhtrt_nodeid_t[KS_DHT_NODEID_SIZE];
typedef struct ks_dhtrt_bucket_entry_s {
ks_time_t tyme;
uint8_t id[KS_DHT_NODEID_SIZE];
ks_dht_node_t *gptr; /* ptr to peer */
ks_dht_node_t *gptr; /* ptr to peer */
enum ks_dht_nodetype_t type;
uint8_t inuse;
uint8_t outstanding_pings;
uint8_t flags; /* active, suspect, expired */
@ -71,10 +72,11 @@ typedef struct ks_dhtrt_bucket_s {
#define BHF_LEFT 0x80
typedef struct ks_dhtrt_bucket_header_s {
struct ks_dhtrt_bucket_header_s* parent;
struct ks_dhtrt_bucket_header_s* left;
struct ks_dhtrt_bucket_header_s* right;
struct ks_dhtrt_bucket_header_s * parent;
struct ks_dhtrt_bucket_header_s * left;
struct ks_dhtrt_bucket_header_s * right;
ks_dhtrt_bucket_t * bucket;
ks_dhtrt_bucket_t * bucketv6;
ks_time_t tyme; /* last processed time */
unsigned char mask[KS_DHT_NODEID_SIZE]; /* node id mask */
unsigned char flags;
@ -84,8 +86,8 @@ typedef struct ks_dhtrt_bucket_header_s {
typedef struct ks_dhtrt_internal_s {
uint8_t localid[KS_DHT_NODEID_SIZE];
ks_dhtrt_bucket_header_t *buckets; /* root bucketheader */
ks_rwl_t * lock; /* lock for safe traversal of the tree */
uint8_t locked;
ks_rwl_t *lock; /* lock for safe traversal of the tree */
uint8_t locked;
} ks_dhtrt_internal_t;
typedef struct ks_dhtrt_xort_s {
@ -124,14 +126,14 @@ static
ks_dht_node_t *ks_dhtrt_find_nodeid(ks_dhtrt_bucket_t *bucket, ks_dhtrt_nodeid_t nodeid);
static void
ks_dhtrt_shiftright(uint8_t *id);
static
void ks_dhtrt_shiftright(uint8_t *id);
static
void ks_dhtrt_shiftleft(uint8_t *id);
static void
ks_dhtrt_xor(const uint8_t *id1, const uint8_t *id2, uint8_t *xor);
static int
ks_dhtrt_ismasked(const uint8_t *id1, const uint8_t *mask);
static
void ks_dhtrt_xor(const uint8_t *id1, const uint8_t *id2, uint8_t *xor);
static
int ks_dhtrt_ismasked(const uint8_t *id1, const uint8_t *mask);
static
ks_status_t ks_dhtrt_insert_node(ks_dhtrt_routetable_t *table, ks_dht_node_t *node);
@ -147,6 +149,7 @@ static
uint8_t ks_dhtrt_load_query(ks_dhtrt_querynodes_t *query, ks_dhtrt_sortedxors_t *xort);
static
uint8_t ks_dhtrt_findclosest_bucketnodes(unsigned char *nodeid,
enum ks_dht_nodetype_t type,
ks_dhtrt_bucket_header_t *header,
ks_dhtrt_sortedxors_t *xors,
unsigned char *hixor,
@ -162,29 +165,16 @@ void ks_dhtrt_ping(ks_dhtrt_bucket_entry_t *entry);
/* # define KS_DHT_DEBUGPRINTFX_ very verbose */
/*
Public interface
---------------
ks_dhtrt_initroute
ks_dhtrt_drinitroute
ks_dhtrt_insertnode
*/
KS_DECLARE(ks_status_t) ks_dhtrt_initroute(ks_dhtrt_routetable_t **tableP, ks_pool_t *pool, ks_dht_nodeid_t nodeid)
KS_DECLARE(ks_status_t) ks_dhtrt_initroute(ks_dhtrt_routetable_t **tableP, ks_pool_t *pool)
{
unsigned char initmask[KS_DHT_NODEID_SIZE];
memset(initmask, 0xff, sizeof(initmask));
ks_dhtrt_routetable_t *table = ks_pool_alloc(pool, sizeof(ks_dhtrt_routetable_t));
memset(table, 0, sizeof(ks_dhtrt_routetable_t));
ks_dhtrt_internal_t *internal = ks_pool_alloc(pool, sizeof(ks_dhtrt_internal_t));
memset(internal, 0, sizeof(ks_dhtrt_internal_t));
/*ks_rwl_create(&internal->lock, pool);*/
if (nodeid.id != 0) memcpy(internal->localid, nodeid.id, KS_DHT_NODEID_SIZE);
table->internal = internal;
/* initialize root bucket */
@ -207,13 +197,13 @@ KS_DECLARE(void) ks_dhtrt_deinitroute(ks_dhtrt_routetable_t **table)
ks_pool_t *pool = (*table)->pool;
ks_pool_free(pool, *table);
*table = NULL;
return;
}
KS_DECLARE(ks_status_t) ks_dhtrt_create_node( ks_dhtrt_routetable_t *table,
ks_dht_nodeid_t nodeid,
ks_dht_nodeid_t nodeid,
enum ks_dht_nodetype_t type,
char *ip,
unsigned short port,
ks_dht_node_t **node)
@ -233,7 +223,8 @@ KS_DECLARE(ks_status_t) ks_dhtrt_create_node( ks_dhtrt_routetable_t *table,
}
}
memcpy(tnode->nodeid.id, nodeid.id, KS_DHT_NODEID_SIZE);
memcpy(tnode->nodeid.id, nodeid.id, KS_DHT_NODEID_SIZE);
tnode->type = type;
if ((ks_addr_set(&tnode->addr, ip, port, tnode->family) != KS_STATUS_SUCCESS) ||
(ks_dhtrt_insert_node(table, tnode) != KS_STATUS_SUCCESS)) {
@ -268,13 +259,6 @@ ks_status_t ks_dhtrt_insert_node(ks_dhtrt_routetable_t *table, ks_dht_node_t *no
ks_dhtrt_bucket_t *bucket = 0;
int insanity = 0;
/* first see if it exists */
ks_dht_node_t *peer = ks_dhtrt_find_node(table, node->nodeid);
if (peer != 0) {
return KS_STATUS_FAIL;
}
ks_dhtrt_bucket_header_t *header = ks_dhtrt_find_bucketheader(table, node->nodeid.id);
bucket = header->bucket;
@ -313,7 +297,7 @@ ks_status_t ks_dhtrt_insert_node(ks_dhtrt_routetable_t *table, ks_dht_node_t *no
if (newmask[KS_DHT_NODEID_SIZE-1] == 0) { /* no more bits to shift - is this possible */
#ifdef KS_DHT_DEBUGPRINTF_
char buffer[100];
printf(" nodeid %s was not inserted\n", ks_dhtrt_printableid(peer->nodeid.id, buffer));
printf(" nodeid %s was not inserted\n", ks_dhtrt_printableid(node->nodeid.id, buffer));
#endif
return KS_STATUS_FAIL;
}
@ -430,7 +414,7 @@ KS_DECLARE(uint8_t) ks_dhtrt_findclosest_nodes(ks_dhtrt_routetable_t *table, ks_
/* step 1 - look at immediate bucket */
/* --------------------------------- */
cnt = ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, header, &xort0, initid ,max);
cnt = ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, query->type, header, &xort0, initid ,max);
max -= cnt;
total += cnt;
@ -438,7 +422,8 @@ KS_DECLARE(uint8_t) ks_dhtrt_findclosest_nodes(ks_dhtrt_routetable_t *table, ks_
printf(" bucket header %s yielded %d nodes; total=%d\n", buffer, cnt, total);
#endif
if (total >= query->max) { /* is query answered ? */
if (total >= query->max ||
!header->parent ) { /* is query answered ? */
return ks_dhtrt_load_query(query, &xort0);
}
@ -462,7 +447,7 @@ KS_DECLARE(uint8_t) ks_dhtrt_findclosest_nodes(ks_dhtrt_routetable_t *table, ks_
}
}
cnt = ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, header, &xort1, initid ,max);
cnt = ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, query->type, header, &xort1, initid ,max);
max -= cnt;
total += cnt;
@ -511,7 +496,7 @@ KS_DECLARE(uint8_t) ks_dhtrt_findclosest_nodes(ks_dhtrt_routetable_t *table, ks_
prev->next = xortn;
prev = xortn;
cnt += ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, lheader, xortn, leftid ,max);
cnt += ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, query->type, lheader, xortn, leftid ,max);
max -= cnt;
#ifdef KS_DHT_DEBUGPRINTF_
printf(" stage3: seaching left bucket header %s yielded %d nodes, total=%d\n",
@ -529,7 +514,7 @@ KS_DECLARE(uint8_t) ks_dhtrt_findclosest_nodes(ks_dhtrt_routetable_t *table, ks_
memset(xortn1, 0, sizeof(ks_dhtrt_sortedxors_t));
prev->next = xortn1;
prev = xortn1;
cnt = ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, rheader, xortn1, rightid , max);
cnt = ks_dhtrt_findclosest_bucketnodes(query->nodeid.id, query->type, rheader, xortn1, rightid , max);
max -= cnt;
#ifdef KS_DHT_DEBUGPRINTF_
printf(" stage3: seaching right bucket header %s yielded %d nodes, total=%d\n",
@ -860,8 +845,9 @@ ks_status_t ks_dhtrt_insert_id(ks_dhtrt_bucket_t *bucket, ks_dht_node_t *node)
if ( free<KS_DHT_BUCKETSIZE ) {
bucket->entries[free].inuse = 1;
bucket->entries[free].gptr = node;
bucket->entries[free].tyme = ks_time_now();
bucket->entries[free].flags &= DHTPEER_ACTIVE;
bucket->entries[free].type = node->type;
bucket->entries[free].tyme = ks_time_now();
bucket->entries[free].flags &= DHTPEER_ACTIVE;
++bucket->count;
memcpy(bucket->entries[free].id, node->nodeid.id, KS_DHT_NODEID_SIZE);
@ -938,6 +924,7 @@ void ks_dhtrt_delete_id(ks_dhtrt_bucket_t *bucket, ks_dhtrt_nodeid_t id)
static
uint8_t ks_dhtrt_findclosest_bucketnodes(ks_dhtrt_nodeid_t id,
enum ks_dht_nodetype_t type,
ks_dhtrt_bucket_header_t *header,
ks_dhtrt_sortedxors_t *xors,
unsigned char *hixor, /*todo: remove */
@ -963,8 +950,9 @@ uint8_t ks_dhtrt_findclosest_bucketnodes(ks_dhtrt_nodeid_t id,
}
for (uint8_t ix=0; ix<KS_DHT_BUCKETSIZE; ++ix) {
if ( bucket->entries[ix].inuse == 1 &&
ks_dhtrt_isactive( &(bucket->entries[ix])) ) {
if ( bucket->entries[ix].inuse == 1 &&
bucket->entries[ix].type & type &&
ks_dhtrt_isactive( &(bucket->entries[ix])) ) {
/* calculate xor value */
ks_dhtrt_xor(bucket->entries[ix].id, id, xorvalue );
@ -1022,7 +1010,7 @@ uint8_t ks_dhtrt_load_query(ks_dhtrt_querynodes_t *query, ks_dhtrt_sortedxors_t
ks_dhtrt_printableid(current->bheader->mask,buf), current->count);
#endif
int xorix = current->startix;
for (uint8_t ix = 0; ix<= current->count && loaded < query->max; ++ix ) {
for (uint8_t ix = 0; ix< current->count && loaded < query->max; ++ix ) {
unsigned int z = current->xort[xorix].ix;
query->nodes[ix] = current->bheader->bucket->entries[z].gptr;
++loaded;
@ -1069,7 +1057,6 @@ void ks_dhtrt_shiftright(uint8_t *id)
}
return;
}
static
void ks_dhtrt_shiftleft(uint8_t *id) {