#include "gnunet-service-ats_addresses_mlp.h"
#include "gnunet_statistics_service.h"
#include "glpk.h"
-#include "float.h"
#define WRITE_MLP GNUNET_NO
-#define DEBUG_ATS GNUNET_YES
-/* A very big value */
-#define M DBL_MAX
+#define DEBUG_ATS GNUNET_NO
+#define VERBOSE_GLPK GNUNET_NO
+#define ENABLE_C8 GNUNET_YES
+#define ENABLE_C9 GNUNET_YES
/**
* Translate glpk solver error codes to text
* @param retcode return code
return "unknown error";
}
+/**
+ * Translate ATS properties to text
+ * Just intended for debugging
+ *
+ * @param ats_index the ATS index
+ * @return string with result
+ */
+const char *
+mlp_ats_to_string (int ats_index)
+{
+ switch (ats_index) {
+ case GNUNET_ATS_ARRAY_TERMINATOR:
+ return "GNUNET_ATS_ARRAY_TERMINATOR";
+ break;
+ case GNUNET_ATS_UTILIZATION_UP:
+ return "GNUNET_ATS_UTILIZATION_UP";
+ break;
+ case GNUNET_ATS_UTILIZATION_DOWN:
+ return "GNUNET_ATS_UTILIZATION_DOWN";
+ break;
+ case GNUNET_ATS_COST_LAN:
+ return "GNUNET_ATS_COST_LAN";
+ break;
+ case GNUNET_ATS_COST_WAN:
+ return "GNUNET_ATS_COST_LAN";
+ break;
+ case GNUNET_ATS_COST_WLAN:
+ return "GNUNET_ATS_COST_WLAN";
+ break;
+ case GNUNET_ATS_NETWORK_TYPE:
+ return "GNUNET_ATS_NETWORK_TYPE";
+ break;
+ case GNUNET_ATS_QUALITY_NET_DELAY:
+ return "GNUNET_ATS_QUALITY_NET_DELAY";
+ break;
+ case GNUNET_ATS_QUALITY_NET_DISTANCE:
+ return "GNUNET_ATS_QUALITY_NET_DISTANCE";
+ break;
+ default:
+ return "unknown";
+ break;
+ }
+ GNUNET_break (0);
+ return "unknown error";
+}
+
/**
* Find a peer in the DLL
- * @param the peer to find
+ *
+ * @param mlp the mlp handle
+ * @param peer the peer to find
* @return the peer struct
*/
static struct ATS_Peer *
mlp_term_hook (void *info, const char *s)
{
/* Not needed atm struct MLP_information *mlp = info; */
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s", s);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%s", s);
return 1;
}
struct ATS_Address *address = value;
struct MLP_information *mlpi;
unsigned int row_index;
+ char *name;
GNUNET_assert (address->mlp_information != NULL);
mlpi = (struct MLP_information *) address->mlp_information;
*/
row_index = glp_add_rows (mlp->prob, 1);
mlpi->r_c1 = row_index;
+ /* set row name */
+ GNUNET_asprintf(&name, "c1_%s_%s", GNUNET_i2s(&address->peer), address->plugin);
+ glp_set_row_name (mlp->prob, row_index, name);
+ GNUNET_free (name);
/* set row bounds: <= 0 */
glp_set_row_bnds (mlp->prob, row_index, GLP_UP, 0.0, 0.0);
-
mlp->ia[mlp->ci] = row_index;
mlp->ja[mlp->ci] = mlpi->c_b;
mlp->ar[mlp->ci] = 1;
mlp->ia[mlp->ci] = row_index;
mlp->ja[mlp->ci] = mlpi->c_n;
- mlp->ar[mlp->ci] = -M;
+ mlp->ar[mlp->ci] = -mlp->BIG_M;
mlp->ci++;
-#if 0
+
/* c 3) minimum bandwidth
* b_t + (-n_t * b_min) >= 0
*/
row_index = glp_add_rows (mlp->prob, 1);
+ /* set row name */
+ GNUNET_asprintf(&name, "c3_%s_%s", GNUNET_i2s(&address->peer), address->plugin);
+ glp_set_row_name (mlp->prob, row_index, name);
+ GNUNET_free (name);
mlpi->r_c3 = row_index;
/* set row bounds: >= 0 */
glp_set_row_bnds (mlp->prob, row_index, GLP_LO, 0.0, 0.0);
mlp->ia[mlp->ci] = row_index;
mlp->ja[mlp->ci] = mlpi->c_n;
- mlp->ar[mlp->ci] = -mlp->b_min;
+ mlp->ar[mlp->ci] = - (double) mlp->b_min;
mlp->ci++;
/* c 4) minimum connections
mlp->ja[mlp->ci] = mlpi->c_n;
mlp->ar[mlp->ci] = 1;
mlp->ci++;
-#endif
+
+ /* c 10) obey network specific quotas
+ * (1)*b_1 + ... + (1)*b_m <= quota_n
+ */
+
+ int cur_row = 0;
+ int c;
+ for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
+ {
+ if (mlp->quota_index[c] == address->atsp_network_type)
+ {
+ cur_row = mlp->r_quota[c];
+ break;
+ }
+ }
+
+ if (cur_row != 0)
+ {
+ mlp->ia[mlp->ci] = cur_row;
+ mlp->ja[mlp->ci] = mlpi->c_b;
+ mlp->ar[mlp->ci] = 1;
+ mlp->ci++;
+ }
+ else
+ {
+ GNUNET_break (0);
+ }
return GNUNET_OK;
}
+/**
+ * Find the required ATS information for an address
+ *
+ * @param addr the address
+ * @param ats_index the desired ATS index
+ *
+ * @return the index on success, otherwise GNUNET_SYSERR
+ */
+
+static int
+mlp_lookup_ats (struct ATS_Address *addr, int ats_index)
+{
+ struct GNUNET_ATS_Information * ats = addr->ats;
+ int c = 0;
+ int found = GNUNET_NO;
+ for (c = 0; c < addr->ats_count; c++)
+ {
+ if (ats[c].type == ats_index)
+ {
+ found = GNUNET_YES;
+ break;
+ }
+ }
+ if (found == GNUNET_YES)
+ return c;
+ else
+ return GNUNET_SYSERR;
+}
/**
* Adds the problem constraints for all addresses
* Required for problem recreation after address deletion
*
+ * @param mlp the mlp handle
* @param addresses all addresses
*/
mlp_add_constraints_all_addresses (struct GAS_MLP_Handle *mlp, struct GNUNET_CONTAINER_MultiHashMap * addresses)
{
unsigned int n_addresses;
- int row_index;
- //int c;
+ int c;
+ char *name;
/* Problem matrix*/
n_addresses = GNUNET_CONTAINER_multihashmap_size(addresses);
* #rows: |ressources|
* #indices: |n_addresses|
*
+ * c 10) obey network specific quota
+ * #rows: |network types
+ * #indices: |n_addresses|
+ *
* Sum for feasibility constraints:
* #rows: 3 * |n_addresses| + |ressources| + |peers| + 1
* #indices: 7 * |n_addresses|
*
* c 7) quality
* #rows: |quality properties|
- * #indices:|quality properties| + |n_addresses|
+ * #indices: |n_addresses| + |quality properties|
+ *
+ * c 8) utilization
+ * #rows: 1
+ * #indices: |n_addresses| + 1
+ *
+ * c 9) relativity
+ * #rows: |peers|
+ * #indices: |n_addresses| + |peers|
* */
- int pi = ((7 * n_addresses) /*+ (2 * n_addresses + mlp->m_q + 1)*/);
+ /* last +1 caused by glpk index starting with one: [1..pi]*/
+ int pi = ((7 * n_addresses) + (5 * n_addresses + mlp->m_q + mlp->c_p + 2) + 1);
mlp->cm_size = pi;
- mlp->ci = 0;
+ mlp->ci = 1;
/* row index */
int *ia = GNUNET_malloc (pi * sizeof (int));
* c 3) minimum bandwidth
* c 4) minimum number of connections
* c 6) maximize diversity
+ * c 10) obey network specific quota
*/
int min = mlp->n_min;
if (mlp->n_min > mlp->c_p)
min = mlp->c_p;
-/*
+
mlp->r_c4 = glp_add_rows (mlp->prob, 1);
- glp_set_row_bnds (mlp->prob, mlp->r_c4, GLP_FX, min, min);
-*/
+ glp_set_row_name (mlp->prob, mlp->r_c4, "c4");
+ glp_set_row_bnds (mlp->prob, mlp->r_c4, GLP_LO, min, min);
+
/* Add row for c6) */
-#if 0
+
mlp->r_c6 = glp_add_rows (mlp->prob, 1);
/* Set type type to fix */
glp_set_row_bnds (mlp->prob, mlp->r_c6, GLP_FX, 0.0, 0.0);
ja[mlp->ci] = mlp->c_d;
ar[mlp->ci] = -1;
mlp->ci++;
-#endif
+
+ /* Add rows for c 10) */
+ for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
+ {
+ mlp->r_quota[c] = glp_add_rows (mlp->prob, 1);
+ char * text;
+ GNUNET_asprintf(&text, "quota_ats_%i", mlp->quota_index[c]);
+ glp_set_row_name (mlp->prob, mlp->r_quota[c], text);
+ GNUNET_free (text);
+ /* Set bounds to 0 <= x <= quota_out */
+ glp_set_row_bnds (mlp->prob, mlp->r_quota[c], GLP_UP, 0.0, mlp->quota_out[c]);
+ }
+
GNUNET_CONTAINER_multihashmap_iterate (addresses, create_constraint_it, mlp);
/* Adding constraint rows
*
* c 2) 1 address per peer
* sum (n_p1_1 + ... + n_p1_n) = 1
- */
-return;
- /* Adding rows for c 2) */
- row_index = glp_add_rows (mlp->prob, mlp->c_p);
+ *
+ * c 8) utilization
+ * sum (f_p * b_p1_1 + ... + f_p * b_p1_n) - u = 0
+ *
+ * c 9) relativity
+ * V p : sum (bt_1 + ... +bt_n) - f_p * r = 0
+ * */
+
+ /* Adding rows for c 8) */
+ mlp->r_c8 = glp_add_rows (mlp->prob, mlp->c_p);
+ glp_set_row_name (mlp->prob, mlp->r_c8, "c8");
+ /* Set row bound == 0 */
+ glp_set_row_bnds (mlp->prob, mlp->r_c8, GLP_FX, 0.0, 0.0);
+ /* -u */
+
+ ia[mlp->ci] = mlp->r_c8;
+ ja[mlp->ci] = mlp->c_u;
+ ar[mlp->ci] = -1;
+ mlp->ci++;
struct ATS_Peer * peer = mlp->peer_head;
while (peer != NULL)
{
struct ATS_Address *addr = peer->head;
- struct MLP_information *mlpi = (struct MLP_information *) addr->mlp_information;
- /* Adding row for c 2) */
+ struct MLP_information *mlpi = NULL;
+
+ /* Adding rows for c 2) */
+ peer->r_c2 = glp_add_rows (mlp->prob, 1);
+ GNUNET_asprintf(&name, "c2_%s", GNUNET_i2s(&peer->id));
+ glp_set_row_name (mlp->prob, peer->r_c2, name);
+ GNUNET_free (name);
/* Set row bound == 1 */
- glp_set_row_bnds (mlp->prob, row_index, GLP_FX, 1.0, 1.0);
+ glp_set_row_bnds (mlp->prob, peer->r_c2, GLP_FX, 1.0, 1.0);
+
+ /* Adding rows for c 9) */
+#if ENABLE_C9
+ peer->r_c9 = glp_add_rows (mlp->prob, 1);
+ GNUNET_asprintf(&name, "c9_%s", GNUNET_i2s(&peer->id));
+ glp_set_row_name (mlp->prob, peer->r_c9, name);
+ GNUNET_free (name);
+ /* Set row bound == 0 */
+ glp_set_row_bnds (mlp->prob, peer->r_c9, GLP_LO, 0.0, 0.0);
+
+ /* Set -r */
+ ia[mlp->ci] = peer->r_c9;
+ ja[mlp->ci] = mlp->c_r;
+ ar[mlp->ci] = -1;
+ mlp->ci++;
+#endif
while (addr != NULL)
{
- ia[mlp->ci] = row_index;
+ mlpi = (struct MLP_information *) addr->mlp_information;
+
+ /* coefficient for c 2) */
+
+ ia[mlp->ci] = peer->r_c2;
ja[mlp->ci] = mlpi->c_n;
ar[mlp->ci] = 1;
mlp->ci++;
+ /* coefficient for c 8) */
+ ia[mlp->ci] = mlp->r_c8;
+ ja[mlp->ci] = mlpi->c_b;
+ ar[mlp->ci] = peer->f;
+ mlp->ci++;
+
+#if ENABLE_C9
+ /* coefficient for c 9) */
+ ia[mlp->ci] = peer->r_c9;
+ ja[mlp->ci] = mlpi->c_b;
+ ar[mlp->ci] = 1;
+ mlp->ci++;
+#endif
+
addr = addr->next;
}
peer = peer->next;
}
+ /* c 7) For all quality metrics */
+
- /* For all quality metrics */
-/*
for (c = 0; c < mlp->m_q; c++)
{
- struct ATS_Peer *p = mlp->peer_head;
- while (p != NULL)
- {
- ia[mlp->ci] = row_index;
- ja[mlp->ci] = mlp->c_q[c];
- ar[mlp->ci] = mlp->;
- mlp->ci++;
-
- p = p->next;
- }
+ struct ATS_Peer *tp;
+ struct ATS_Address *ta;
+ struct MLP_information * mlpi;
+ double value = 1.0;
+
+ /* Adding rows for c 7) */
+ mlp->r_q[c] = glp_add_rows (mlp->prob, 1);
+ GNUNET_asprintf(&name, "c7_q%i_%s", c, mlp_ats_to_string(mlp->q[c]));
+ glp_set_row_name (mlp->prob, mlp->r_q[c], name);
+ GNUNET_free (name);
+ /* Set row bound == 0 */
+ glp_set_row_bnds (mlp->prob, mlp->r_q[c], GLP_LO, 0.0, 0.0);
+
+ ia[mlp->ci] = mlp->r_q[c];
+ ja[mlp->ci] = mlp->c_q[c];
+ ar[mlp->ci] = -1;
+ mlp->ci++;
+
+ for (tp = mlp->peer_head; tp != NULL; tp = tp->next)
+ for (ta = tp->head; ta != NULL; ta = ta->next)
+ {
+ mlpi = ta->mlp_information;
+ value = mlpi->q_averaged[c];
+
+ mlpi->r_q[c] = mlp->r_q[c];
+
+ ia[mlp->ci] = mlp->r_q[c];
+ ja[mlp->ci] = mlpi->c_b;
+ ar[mlp->ci] = tp->f * value;
+ mlp->ci++;
+ }
}
-*/
}
mlpi->c_b = col;
mlpi->c_n = col + 1;
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
- "ats-mlp",
- "Culoumn %i %i\n", mlpi->c_b, mlpi->c_n);
GNUNET_asprintf (&name, "b_%s_%s", GNUNET_i2s (&address->peer), address->plugin);
glp_set_col_name (mlp->prob, mlpi->c_b , name);
/* Integer value*/
glp_set_col_kind (mlp->prob, mlpi->c_n, GLP_IV);
/* Objective function coefficient == 0 */
- glp_set_obj_coef (mlp->prob, mlpi->c_n, 1);
+ glp_set_obj_coef (mlp->prob, mlpi->c_n, 0);
return GNUNET_OK;
}
* Create the MLP problem
*
* @param mlp the MLP handle
+ * @param addresses the hashmap containing all adresses
* @return GNUNET_OK or GNUNET_SYSERR
*/
static int
mlp_create_problem (struct GAS_MLP_Handle *mlp, struct GNUNET_CONTAINER_MultiHashMap * addresses)
{
int res = GNUNET_OK;
-/*
int col;
int c;
char *name;
-*/
+
GNUNET_assert (mlp->prob == NULL);
/* create the glpk problem */
/* Adding invariant columns */
/* Diversity d column */
-#if 0
+
col = glp_add_cols (mlp->prob, 1);
mlp->c_d = col;
/* Column name */
/* Column lower bound = 0.0 */
glp_set_col_bnds (mlp->prob, col, GLP_LO, 0.0, 0.0);
+#if ENABLE_C9
/* Relativity r column */
col = glp_add_cols (mlp->prob, 1);
mlp->c_r = col;
glp_set_obj_coef (mlp->prob, col, mlp->co_R);
/* Column lower bound = 0.0 */
glp_set_col_bnds (mlp->prob, col, GLP_LO, 0.0, 0.0);
+#endif
/* Quality metric columns */
col = glp_add_cols(mlp->prob, mlp->m_q);
/* Coefficient == Qm */
glp_set_obj_coef (mlp->prob, col + c, mlp->co_Q[c]);
}
-#endif
+
/* Add columns for addresses */
GNUNET_CONTAINER_multihashmap_iterate (addresses, create_columns_it, mlp);
mlp_add_constraints_all_addresses (mlp, addresses);
/* Load the matrix */
- glp_load_matrix(mlp->prob, (mlp->ci - 1), mlp->ia, mlp->ja, mlp->ar);
+ glp_load_matrix(mlp->prob, (mlp->ci-1), mlp->ia, mlp->ja, mlp->ar);
return res;
}
else
{
/* Problem was ill-defined, no way to handle that */
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"ats-mlp",
"Solving LP problem failed: %i %s\n", res, mlp_solve_to_string(res));
return GNUNET_SYSERR;
/* Problem was ill-defined, no way to handle that */
default:
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"ats-mlp",
"Solving LP problem failed, no solution: %s\n", mlp_status_to_string(res));
return GNUNET_SYSERR;
else
{
/* Problem was ill-defined, no way to handle that */
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"ats-mlp",
"Solving MLP problem failed: %s\n", mlp_solve_to_string(res));
return GNUNET_SYSERR;
/* Problem was ill-defined, no way to handle that */
default:
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"ats-mlp",
"Solving MLP problem failed, %s\n\n", mlp_status_to_string(res));
return GNUNET_SYSERR;
return GNUNET_OK;
}
-int mlp_solve_problem (struct GAS_MLP_Handle *mlp);
+int GAS_mlp_solve_problem (struct GAS_MLP_Handle *mlp);
static void
mlp_scheduler (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
-#if DEBUG_ATS
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scheduled problem solving\n");
-#endif
+
if (mlp->addr_in_problem != 0)
- mlp_solve_problem(mlp);
+ GAS_mlp_solve_problem(mlp);
}
* @return GNUNET_OK if could be solved, GNUNET_SYSERR on failure
*/
int
-mlp_solve_problem (struct GAS_MLP_Handle *mlp)
+GAS_mlp_solve_problem (struct GAS_MLP_Handle *mlp)
{
int res;
mlp->last_execution = GNUNET_TIME_absolute_get ();
-#if DEBUG_ATS
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Problem solving\n");
-#endif
+
#if WRITE_MLP
char * name;
if (res != GNUNET_OK)
{
-#if DEBUG_ATS
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "LP Problem solving failed\n");
-#endif
+
return GNUNET_SYSERR;
}
glp_print_mip (mlp->prob, name);
GNUNET_free (name);
# endif
-
-
if (res != GNUNET_OK)
{
-#if DEBUG_ATS
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "MLP Problem solving failed\n");
-#endif
+
return GNUNET_SYSERR;
}
- res = glp_mip_status(mlp->prob);
- if (res != GNUNET_OK)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Problem solved\n");
+ /* Process result */
+ struct ATS_Peer *p = NULL;
+ struct ATS_Address *a = NULL;
+ struct MLP_information *mlpi = NULL;
+
+ for (p = mlp->peer_head; p != NULL; p = p->next)
{
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "LP Problem solving failed\n");
-#endif
- return GNUNET_SYSERR;
- }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer `%s'\n", GNUNET_i2s (&p->id));
+ for (a = p->head; a != NULL; a = a->next)
+ {
+ double b = 0.0;
+ double n = 0.0;
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Problem solved: %i %s\n", res, mlp_status_to_string(res));
-#endif
+ mlpi = a->mlp_information;
- /* Process result */
+ b = glp_mip_col_val(mlp->prob, mlpi->c_b);
+ mlpi->b = b;
+
+ n = glp_mip_col_val(mlp->prob, mlpi->c_n);
+ if (n == 1.0)
+ mlpi->n = GNUNET_YES;
+ else
+ mlpi->n = GNUNET_NO;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "\tAddress %s %f\n",
+ (n == 1.0) ? "[x]" : "[ ]", b);
+ }
+ }
if (mlp->mlp_task != GNUNET_SCHEDULER_NO_TASK)
{
/**
* Init the MLP problem solving component
*
+ * @param cfg the GNUNET_CONFIGURATION_Handle handle
* @param stats the GNUNET_STATISTICS handle
* @param max_duration maximum numbers of iterations for the LP/MLP Solver
* @param max_iterations maximum time limit for the LP/MLP Solver
unsigned int b_min;
unsigned int n_min;
struct GNUNET_TIME_Relative i_exec;
+ int c;
+ char * quota_out_str;
+ char * quota_in_str;
/* Init GLPK environment */
GNUNET_assert (glp_init_env() == 0);
mlp->prob = glp_create_prob();
GNUNET_assert (mlp->prob != NULL);
+ mlp->BIG_M = (double) BIG_M_VALUE;
+
/* Get diversity coefficient from configuration */
if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_size (cfg, "ats",
"COEFFICIENT_D",
int i_delay = -1;
int i_distance = -1;
int q[GNUNET_ATS_QualityPropertiesCount] = GNUNET_ATS_QualityProperties;
- int c;
for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
{
/* initialize quality coefficients with default value 1.0 */
&tmp))
b_min = tmp;
else
- b_min = 64000;
+ {
+ b_min = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
+ }
/* Get minimum number of connections from configuration */
if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_size (cfg, "ats",
else
n_min = 4;
+ /* Init network quotas */
+ int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
+ for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
+ {
+ mlp->quota_index[c] = quotas[c];
+ static char * entry_in = NULL;
+ static char * entry_out = NULL;
+ unsigned long long quota_in = 0;
+ unsigned long long quota_out = 0;
+
+ switch (quotas[c]) {
+ case GNUNET_ATS_NET_UNSPECIFIED:
+ entry_out = "UNSPECIFIED_QUOTA_OUT";
+ entry_in = "UNSPECIFIED_QUOTA_IN";
+ break;
+ case GNUNET_ATS_NET_LOOPBACK:
+ entry_out = "LOOPBACK_QUOTA_OUT";
+ entry_in = "LOOPBACK_QUOTA_IN";
+ break;
+ case GNUNET_ATS_NET_LAN:
+ entry_out = "LAN_QUOTA_OUT";
+ entry_in = "LAN_QUOTA_IN";
+ break;
+ case GNUNET_ATS_NET_WAN:
+ entry_out = "WAN_QUOTA_OUT";
+ entry_in = "WAN_QUOTA_IN";
+ break;
+ case GNUNET_ATS_NET_WLAN:
+ entry_out = "WLAN_QUOTA_OUT";
+ entry_in = "WLAN_QUOTA_IN";
+ break;
+ default:
+ break;
+ }
+
+ if ((entry_in == NULL) || (entry_out == NULL))
+ continue;
+
+ if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
+ {
+ if (0 == strcmp(quota_out_str, BIG_M_STRING) ||
+ (GNUNET_SYSERR == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, "a_out)))
+ quota_out = mlp->BIG_M;
+
+ GNUNET_free (quota_out_str);
+ quota_out_str = NULL;
+ }
+ else if (GNUNET_ATS_NET_UNSPECIFIED == quotas[c])
+ {
+ quota_out = 0;
+ }
+ else
+ {
+ quota_out = mlp->BIG_M;
+ }
+
+ if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
+ {
+ if (0 == strcmp(quota_in_str, BIG_M_STRING) ||
+ (GNUNET_SYSERR == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, "a_in)))
+ quota_in = mlp->BIG_M;
+
+ GNUNET_free (quota_in_str);
+ quota_in_str = NULL;
+ }
+ else if (GNUNET_ATS_NET_UNSPECIFIED == quotas[c])
+ {
+ quota_in = 0;
+ }
+ else
+ {
+ quota_in = mlp->BIG_M;
+ }
+
+ /* Check if defined quota could make problem unsolvable */
+ if (((n_min * b_min) > quota_out) && (GNUNET_ATS_NET_UNSPECIFIED != quotas[c]))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Inconsistent quota configuration value `%s': " \
+ "outbound quota (%u Bps) too small for combination of minimum connections and minimum bandwidth per peer (%u * %u Bps = %u)\n", entry_out, quota_out, n_min, b_min, n_min * b_min);
+
+ GAS_mlp_done(mlp);
+ mlp = NULL;
+ return NULL;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found `%s' quota %llu and `%s' quota %llu\n",
+ entry_out, quota_out, entry_in, quota_in);
+ GNUNET_STATISTICS_update ((struct GNUNET_STATISTICS_Handle *) stats, entry_out, quota_out, GNUNET_NO);
+ GNUNET_STATISTICS_update ((struct GNUNET_STATISTICS_Handle *) stats, entry_in, quota_in, GNUNET_NO);
+ mlp->quota_out[c] = quota_out;
+ mlp->quota_in[c] = quota_in;
+ }
+
/* Get minimum number of connections from configuration */
if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_time (cfg, "ats",
"ATS_EXEC_INTERVAL",
mlp->stats = (struct GNUNET_STATISTICS_Handle *) stats;
mlp->max_iterations = max_iterations;
mlp->max_exec_duration = max_duration;
+ mlp->auto_solve = GNUNET_YES;
/* Redirect GLPK output to GNUnet logging */
glp_error_hook((void *) mlp, &mlp_term_hook);
/* Init LP solving parameters */
glp_init_smcp(&mlp->control_param_lp);
-#if DEBUG_ATS
- mlp->control_param_lp.msg_lev = GLP_MSG_ALL;
-#else
+
mlp->control_param_lp.msg_lev = GLP_MSG_OFF;
+#if VERBOSE_GLPK
+ mlp->control_param_lp.msg_lev = GLP_MSG_ALL;
#endif
+
mlp->control_param_lp.it_lim = max_iterations;
mlp->control_param_lp.tm_lim = max_duration.rel_value;
/* Init MLP solving parameters */
glp_init_iocp(&mlp->control_param_mlp);
-#if DEBUG_ATS
- mlp->control_param_mlp.msg_lev = GLP_MSG_ALL;
-#else
+
mlp->control_param_mlp.msg_lev = GLP_MSG_OFF;
+#if VERBOSE_GLPK
+ mlp->control_param_mlp.msg_lev = GLP_MSG_ALL;
#endif
mlp->control_param_mlp.tm_lim = max_duration.rel_value;
return mlp;
}
+static void
+update_quality (struct GAS_MLP_Handle *mlp, struct ATS_Address * address)
+{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating quality metrics for peer `%s'\n",
+ GNUNET_i2s (&address->peer));
+
+ struct MLP_information *mlpi = address->mlp_information;
+ struct GNUNET_ATS_Information *ats = address->ats;
+ GNUNET_assert (mlpi != NULL);
+
+ int c;
+
+ for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
+ {
+ int index = mlp_lookup_ats(address, mlp->q[c]);
+
+ if (index == GNUNET_SYSERR)
+ continue;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating address for peer `%s' value `%s': %f\n",
+ GNUNET_i2s (&address->peer),
+ mlp_ats_to_string(mlp->q[c]),
+ (double) ats[index].value);
+
+ int i = mlpi->q_avg_i[c];
+ double * qp = mlpi->q[c];
+ qp[i] = (double) ats[index].value;
+
+ int t;
+ for (t = 0; t < MLP_AVERAGING_QUEUE_LENGTH; t++)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer `%s': `%s' queue[%u]: %f\n",
+ GNUNET_i2s (&address->peer),
+ mlp_ats_to_string(mlp->q[c]),
+ t,
+ qp[t]);
+ }
+
+ if (mlpi->q_avg_i[c] + 1 < (MLP_AVERAGING_QUEUE_LENGTH))
+ mlpi->q_avg_i[c] ++;
+ else
+ mlpi->q_avg_i[c] = 0;
+
+
+ int c2;
+ int c3;
+ double avg = 0.0;
+ switch (mlp->q[c])
+ {
+ case GNUNET_ATS_QUALITY_NET_DELAY:
+ c3 = 0;
+ for (c2 = 0; c2 < MLP_AVERAGING_QUEUE_LENGTH; c2++)
+ {
+ if (mlpi->q[c][c2] != -1)
+ {
+ double * t2 = mlpi->q[c] ;
+ avg += t2[c2];
+ c3 ++;
+ }
+ }
+ if (c3 > 0)
+ /* avg = 1 / ((q[0] + ... + q[l]) /c3) => c3 / avg*/
+ mlpi->q_averaged[c] = (double) c3 / avg;
+ else
+ mlpi->q_averaged[c] = 0.0;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer `%s': `%s' average sum: %f, average: %f, weight: %f\n",
+ GNUNET_i2s (&address->peer),
+ mlp_ats_to_string(mlp->q[c]),
+ avg,
+ avg / (double) c3,
+ mlpi->q_averaged[c]);
+
+ break;
+ case GNUNET_ATS_QUALITY_NET_DISTANCE:
+ c3 = 0;
+ for (c2 = 0; c2 < MLP_AVERAGING_QUEUE_LENGTH; c2++)
+ {
+ if (mlpi->q[c][c2] != -1)
+ {
+ double * t2 = mlpi->q[c] ;
+ avg += t2[c2];
+ c3 ++;
+ }
+ }
+ if (c3 > 0)
+ /* avg = 1 / ((q[0] + ... + q[l]) /c3) => c3 / avg*/
+ mlpi->q_averaged[c] = (double) c3 / avg;
+ else
+ mlpi->q_averaged[c] = 0.0;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer `%s': `%s' average sum: %f, average: %f, weight: %f\n",
+ GNUNET_i2s (&address->peer),
+ mlp_ats_to_string(mlp->q[c]),
+ avg,
+ avg / (double) c3,
+ mlpi->q_averaged[c]);
+
+ break;
+ default:
+ break;
+ }
+
+ if ((mlpi->c_b != 0) && (mlpi->r_q[c] != 0))
+ {
+
+ /* Get current number of columns */
+ int found = GNUNET_NO;
+ int cols = glp_get_num_cols(mlp->prob);
+ int *ind = GNUNET_malloc (cols * sizeof (int) + 1);
+ double *val = GNUNET_malloc (cols * sizeof (double) + 1);
+
+ /* Get the matrix row of quality */
+ int length = glp_get_mat_row(mlp->prob, mlp->r_q[c], ind, val);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "cols %i, length %i c_b %i\n", cols, length, mlpi->c_b);
+ int c4;
+ /* Get the index if matrix row of quality */
+ for (c4 = 1; c4 <= length; c4++ )
+ {
+ if (mlpi->c_b == ind[c4])
+ {
+ /* Update the value */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating quality `%s' column `%s' row `%s' : %f -> %f\n",
+ mlp_ats_to_string(mlp->q[c]),
+ glp_get_col_name (mlp->prob, ind[c4]),
+ glp_get_row_name (mlp->prob, mlp->r_q[c]),
+ val[c4],
+ mlpi->q_averaged[c]);
+ val[c4] = mlpi->q_averaged[c];
+ found = GNUNET_YES;
+ break;
+ }
+ }
+
+ if (found == GNUNET_NO)
+ {
+
+ ind[length+1] = mlpi->c_b;
+ val[length+1] = mlpi->q_averaged[c];
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%i ind[%i] val[%i]: %i %f\n", length+1, length+1, length+1, mlpi->c_b, mlpi->q_averaged[c]);
+ glp_set_mat_row (mlp->prob, mlpi->r_q[c], length+1, ind, val);
+ }
+ else
+ {
+ /* Get the index if matrix row of quality */
+ glp_set_mat_row (mlp->prob, mlpi->r_q[c], length, ind, val);
+ }
+
+ GNUNET_free (ind);
+ GNUNET_free (val);
+ }
+ }
+}
+
/**
* Updates a single address in the MLP problem
*
{
int new;
struct MLP_information *mlpi;
- int c;
GNUNET_STATISTICS_update (mlp->stats,"# LP address updates", 1, GNUNET_NO);
if (new == GNUNET_YES)
{
mlpi = GNUNET_malloc (sizeof (struct MLP_information));
+
+ int c;
+ for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
+ {
+ int c2;
+ mlpi->r_q[c] = 0;
+ for (c2 = 0; c2 < MLP_AVERAGING_QUEUE_LENGTH; c2++)
+ mlpi->q[c][c2] = -1.0; /* -1.0: invalid value */
+ mlpi->q_avg_i[c] = 0;
+ mlpi->q_averaged[c] = 0.0;
+ }
+
address->mlp_information = mlpi;
mlp->addr_in_problem ++;
struct ATS_Peer *peer = mlp_find_peer (mlp, &address->peer);
if (peer == NULL)
{
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Adding new peer `%s'\n", GNUNET_i2s (&address->peer));
-#endif
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding new peer `%s'\n",
+ GNUNET_i2s (&address->peer));
+
peer = GNUNET_malloc (sizeof (struct ATS_Peer));
peer->head = NULL;
peer->tail = NULL;
+ int c;
for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
{
peer->f_q[c] = 1.0;
}
+ peer->f = 1.0;
memcpy (&peer->id, &address->peer, sizeof (struct GNUNET_PeerIdentity));
GNUNET_assert(address->prev == NULL);
}
else
{
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Adding address to peer `%s'\n", GNUNET_i2s (&address->peer));
-#endif
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding address to peer `%s'\n",
+ GNUNET_i2s (&address->peer));
+
GNUNET_CONTAINER_DLL_insert (peer->head, peer->tail, address);
}
+
+ update_quality (mlp, address);
}
else
{
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Updating existing address to peer `%s'\n", GNUNET_i2s (&address->peer));
-#endif
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing address to peer `%s'\n",
+ GNUNET_i2s (&address->peer));
+
+ update_quality (mlp, address);
}
/* Recalculate */
if (new == GNUNET_YES)
{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Recreating problem: new address\n");
+
mlp_delete_problem (mlp);
mlp_create_problem (mlp, addresses);
mlp->presolver_required = GNUNET_YES;
}
- mlp_solve_problem (mlp);
+ if (mlp->auto_solve == GNUNET_YES)
+ GAS_mlp_solve_problem (mlp);
}
/**
/* Remove from peer list */
struct ATS_Peer *head = mlp_find_peer (mlp, &address->peer);
GNUNET_assert (head != NULL);
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Deleting address for `%s'\n", GNUNET_i2s (&address->peer));
-#endif
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting address for `%s'\n", GNUNET_i2s (&address->peer));
+
GNUNET_CONTAINER_DLL_remove (head->head, head->tail, address);
if ((head->head == NULL) && (head->tail == NULL))
{
/* No address for peer left, remove peer */
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Deleting peer `%s'\n", GNUNET_i2s (&address->peer));
-#endif
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting peer `%s'\n", GNUNET_i2s (&address->peer));
+
GNUNET_CONTAINER_DLL_remove (mlp->peer_head, mlp->peer_tail, head);
GNUNET_free (head);
mlp->c_p --;
}
/* Update problem */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Recreating problem: new address\n");
+
mlp_delete_problem (mlp);
if ((GNUNET_CONTAINER_multihashmap_size (addresses) > 0) && (mlp->c_p > 0))
{
-#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "mlp_create_problem %i\n",__LINE__);
-#endif
mlp_create_problem (mlp, addresses);
/* Recalculate */
mlp->presolver_required = GNUNET_YES;
- mlp_solve_problem (mlp);
+ if (mlp->auto_solve == GNUNET_YES)
+ GAS_mlp_solve_problem (mlp);
+ }
+}
+
+static int
+mlp_get_preferred_address_it (void *cls, const GNUNET_HashCode * key, void *value)
+{
+
+ struct ATS_PreferedAddress *aa = (struct ATS_PreferedAddress *) cls;
+ struct ATS_Address *addr = value;
+ struct MLP_information *mlpi = addr->mlp_information;
+ if (mlpi == NULL)
+ return GNUNET_YES;
+ if (mlpi->n == GNUNET_YES)
+ {
+ aa->address = addr;
+ if (mlpi->b > (double) UINT32_MAX)
+ aa->bandwidth_out = UINT32_MAX;
+ else
+ aa->bandwidth_out = (uint32_t) mlpi->b;
+ aa->bandwidth_in = 0;
+ return GNUNET_NO;
}
+ return GNUNET_YES;
+}
+
+
+/**
+ * Get the preferred address for a specific peer
+ *
+ * @param mlp the MLP Handle
+ * @param addresses address hashmap
+ * @param peer the peer
+ * @return suggested address
+ */
+struct ATS_PreferedAddress *
+GAS_mlp_get_preferred_address (struct GAS_MLP_Handle *mlp,
+ struct GNUNET_CONTAINER_MultiHashMap * addresses,
+ const struct GNUNET_PeerIdentity *peer)
+{
+ struct ATS_PreferedAddress * aa = GNUNET_malloc (sizeof (struct ATS_PreferedAddress));
+ aa->address = NULL;
+ aa->bandwidth_in = 0;
+ aa->bandwidth_out = 0;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Getting preferred address for `%s'\n", GNUNET_i2s (peer));
+ GNUNET_CONTAINER_multihashmap_get_multiple (addresses, &peer->hashPubKey, mlp_get_preferred_address_it, aa);
+ return aa;
}
+
/**
* Changes the preferences for a peer in the MLP problem
*
* @param mlp the MLP Handle
* @param peer the peer
* @param kind the kind to change the preference
- * @param float the score
+ * @param score the score
*/
void
GAS_mlp_address_change_preference (struct GAS_MLP_Handle *mlp,
struct ATS_Peer * peer;
struct ATS_Peer * tmp;
+ GNUNET_assert (mlp != NULL);
+
if (mlp->mlp_task != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel(mlp->mlp_task);
}
/* clean up peer list */
- if (mlp != NULL)
+ peer = mlp->peer_head;
+ while (peer != NULL)
{
- peer = mlp->peer_head;
- while (peer != NULL)
- {
- GNUNET_CONTAINER_DLL_remove(mlp->peer_head, mlp->peer_tail, peer);
- tmp = peer->next;
- GNUNET_free (peer);
- peer = tmp;
- }
+ GNUNET_CONTAINER_DLL_remove(mlp->peer_head, mlp->peer_tail, peer);
+ tmp = peer->next;
+ GNUNET_free (peer);
+ peer = tmp;
}
mlp_delete_problem (mlp);
projects / oweals / gnunet.git / blobdiff