static ofl_err
ofl_msg_unpack_stats_request_flow(struct ofp_stats_request *os, size_t *len, struct ofl_msg_header **msg, struct ofl_exp *exp, char *errbuf) {
struct ofp_flow_stats_request *sm;
struct ofl_msg_stats_request_flow *dm;
ofl_err error = 0;
// ofp_stats_request length was checked at ofl_msg_unpack_stats_request
if (*len < (sizeof(struct ofp_flow_stats_request) - sizeof(struct ofp_match))) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received FLOW stats request has invalid length (%zu).", *len);
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
*len -= (sizeof(struct ofp_flow_stats_request) - sizeof(struct ofp_match));
sm = (struct ofp_flow_stats_request *)os->body;
dm = (struct ofl_msg_stats_request_flow *)malloc(sizeof(struct ofl_msg_stats_request_flow));
dm->table_id = sm->table_id;
dm->out_port = ntohl(sm->out_port);
dm->out_group = ntohl(sm->out_group);
dm->cookie = ntoh64(sm->cookie);
dm->cookie_mask = ntoh64(sm->cookie_mask);
error = ofl_structs_match_unpack(&(sm->match), len, &(dm->match), exp, errbuf);
if (error) {
free(dm);
return error;
}
*msg = (struct ofl_msg_header *)dm;
return 0;
}
static ofl_err
ofl_msg_unpack_flow_mod(struct ofp_header *src, size_t *len, struct ofl_msg_header **msg, struct ofl_exp *exp) {
struct ofp_flow_mod *sm;
struct ofl_msg_flow_mod *dm;
struct ofp_instruction *inst;
ofl_err error;
size_t i;
if (*len < (sizeof(struct ofp_flow_mod) - sizeof(struct ofp_match))) {
OFL_LOG_WARN(LOG_MODULE, "Received FLOW_MOD message has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBRC_BAD_LEN);
}
*len -= (sizeof(struct ofp_flow_mod) - sizeof(struct ofp_match));
sm = (struct ofp_flow_mod *)src;
dm = (struct ofl_msg_flow_mod *)malloc(sizeof(struct ofl_msg_flow_mod));
dm->cookie = ntoh64(sm->cookie);
dm->cookie_mask = ntoh64(sm->cookie_mask);
dm->table_id = sm->table_id;
dm->command = (enum ofp_flow_mod_command)sm->command;
dm->idle_timeout = ntohs( sm->idle_timeout);
dm->hard_timeout = ntohs( sm->hard_timeout);
dm->priority = ntohs( sm->priority);
dm->buffer_id = ntohl( sm->buffer_id);
dm->out_port = ntohl( sm->out_port);
dm->out_group = ntohl( sm->out_group);
dm->flags = ntohs( sm->flags);
error = ofl_structs_match_unpack(&(sm->match), len, &(dm->match), exp);
if (error) {
free(dm);
return error;
}
error = ofl_utils_count_ofp_instructions(&(sm->instructions), *len, &dm->instructions_num);
if (error) {
ofl_structs_free_match(dm->match, exp);
free(dm);
return error;
}
dm->instructions = (struct ofl_instruction_header **)malloc(dm->instructions_num * sizeof(struct ofl_instruction_header *));
inst = sm->instructions;
for (i = 0; i < dm->instructions_num; i++) {
error = ofl_structs_instructions_unpack(inst, len, &(dm->instructions[i]), exp);
if (error) {
OFL_UTILS_FREE_ARR_FUN2(dm->instructions, i,
ofl_structs_free_instruction, exp);
ofl_structs_free_match(dm->match, exp);
free(dm);
return error;
}
inst = (struct ofp_instruction *)((uint8_t *)inst + ntohs(inst->len));
}
*msg = (struct ofl_msg_header *)dm;
return 0;
}
static ofl_err
ofl_msg_unpack_flow_removed(struct ofp_header *src, size_t *len, struct ofl_msg_header **msg, struct ofl_exp *exp, char *errbuf) {
struct ofp_flow_removed *sr;
struct ofl_msg_flow_removed *dr;
ofl_err error;
if (*len < (sizeof(struct ofp_flow_removed) - sizeof(struct ofp_match))) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received FLOW_REMOVED message has invalid length (%zu).", *len);
}
return OFL_ERROR;
}
sr = (struct ofp_flow_removed *)src;
if (sr->table_id == 0xff) {
if (errbuf != NULL) {
char *ts = ofl_table_to_string(sr->table_id);
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received FLOW_REMOVED message has invalid table_id (%s).", ts);
free(ts);
}
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
*len -= (sizeof(struct ofp_flow_removed) - sizeof(struct ofp_match));
dr = (struct ofl_msg_flow_removed *)malloc(sizeof(struct ofl_msg_flow_removed));
dr->reason = (enum ofp_flow_removed_reason)sr->reason;
dr->stats = (struct ofl_flow_stats *)malloc(sizeof(struct ofl_flow_stats));
dr->stats->table_id = sr->table_id;
dr->stats->duration_sec = ntohl( sr->duration_sec);
dr->stats->duration_nsec = ntohl( sr->duration_nsec);
dr->stats->priority = ntoh64(sr->priority);
dr->stats->idle_timeout = ntohs( sr->idle_timeout);
dr->stats->hard_timeout = 0;
dr->stats->cookie = ntoh64(sr->cookie);
dr->stats->packet_count = ntoh64(sr->packet_count);
dr->stats->byte_count = ntoh64(sr->byte_count);
dr->stats->instructions_num = 0;
dr->stats->instructions = NULL;
error = ofl_structs_match_unpack(&(sr->match), len, &(dr->stats->match), exp, errbuf);
if (error) {
free(dr->stats);
free(dr);
return error;
}
*msg = (struct ofl_msg_header *)dr;
return 0;
}
ofl_err
ofl_structs_flow_stats_unpack(struct ofp_flow_stats *src, size_t *len, struct ofl_flow_stats **dst, struct ofl_exp *exp, char *errbuf) {
struct ofl_flow_stats *s;
struct ofp_instruction *inst;
ofl_err error;
size_t slen;
size_t i;
if (*len < (sizeof(struct ofp_flow_stats) - sizeof(struct ofp_match))) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received flow stats has invalid length (%zu).", *len);
}
return ofl_error(OFPET_BAD_ACTION, OFPBRC_BAD_LEN);
}
if (*len < ntohs(src->length)) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received flow stats reply has invalid length (set to %u, but only %zu received).", ntohs(src->length), *len);
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
if (src->table_id == 0xff) {
if (errbuf != NULL) {
char *ts = ofl_table_to_string(src->table_id);
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received flow stats has invalid table_id (%s).", ts);
free(ts);
}
return ofl_error(OFPET_BAD_ACTION, OFPBRC_BAD_LEN);
}
slen = ntohs(src->length) - (sizeof(struct ofp_flow_stats) - sizeof(struct ofp_match));
s = (struct ofl_flow_stats *)malloc(sizeof(struct ofl_flow_stats));
s->table_id = src->table_id;
s->duration_sec = ntohl( src->duration_sec);
s->duration_nsec = ntohl( src->duration_nsec);
s->priority = ntohs( src->priority);
s->idle_timeout = ntohs( src->idle_timeout);
s->hard_timeout = ntohs( src->hard_timeout);
s->cookie = ntoh64(src->cookie);
s->packet_count = ntoh64(src->packet_count);
s->byte_count = ntoh64(src->byte_count);
error = ofl_structs_match_unpack(&(src->match), &slen, &(s->match), exp, errbuf);
if (error) {
free(s);
return error;
}
error = ofl_utils_count_ofp_instructions(src->instructions, slen, &s->instructions_num, errbuf);
if (error) {
ofl_structs_free_match(s->match, exp, NULL);
free(s);
return error;
}
s->instructions = (struct ofl_instruction_header **)malloc(s->instructions_num * sizeof(struct ofl_instruction_header *));
inst = src->instructions;
for (i = 0; i < s->instructions_num; i++) {
error = ofl_structs_instructions_unpack(inst, &slen, &(s->instructions[i]), exp, errbuf);
if (error) {
OFL_UTILS_FREE_ARR_FUN3(s->instructions, i,
ofl_structs_free_instruction, exp, errbuf);
free(s);
return error;
}
inst = (struct ofp_instruction *)((uint8_t *)inst + ntohs(inst->len));
}
if (slen != 0) {
*len = *len - ntohs(src->length) + slen;
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "The received flow stats contained extra bytes (%zu).", slen);
}
ofl_structs_free_flow_stats(s, exp, errbuf);
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
*len -= ntohs(src->length);
*dst = s;
return 0;
}
ofl_err
ofl_structs_flow_stats_unpack(struct ofp_flow_stats *src, uint8_t *buf, size_t *len, struct ofl_flow_stats **dst, struct ofl_exp *exp) {
struct ofl_flow_stats *s;
struct ofp_instruction *inst;
ofl_err error;
size_t slen;
size_t i;
int match_pos;
if (*len < ( (sizeof(struct ofp_flow_stats) - sizeof(struct ofp_match)) + ROUND_UP(ntohs(src->match.length),8))) {
OFL_LOG_WARN(LOG_MODULE, "Received flow stats has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
if (*len < ntohs(src->length)) {
OFL_LOG_WARN(LOG_MODULE, "Received flow stats reply has invalid length (set to %u, but only %zu received).", ntohs(src->length), *len);
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
if (src->table_id >= PIPELINE_TABLES) {
if (OFL_LOG_IS_WARN_ENABLED(LOG_MODULE)) {
char *ts = ofl_table_to_string(src->table_id);
OFL_LOG_WARN(LOG_MODULE, "Received flow stats has invalid table_id (%s).", ts);
free(ts);
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_TABLE_ID);
}
slen = ntohs(src->length) - (sizeof(struct ofp_flow_stats) - sizeof(struct ofp_match));
s = (struct ofl_flow_stats *)malloc(sizeof(struct ofl_flow_stats));
s->table_id = src->table_id;
s->duration_sec = ntohl( src->duration_sec);
s->duration_nsec = ntohl( src->duration_nsec);
s->priority = ntohs( src->priority);
s->idle_timeout = ntohs( src->idle_timeout);
s->hard_timeout = ntohs( src->hard_timeout);
s->cookie = ntoh64(src->cookie);
s->packet_count = ntoh64(src->packet_count);
s->byte_count = ntoh64(src->byte_count);
match_pos = sizeof(struct ofp_flow_stats) - 4;
error = ofl_structs_match_unpack(&(src->match),buf + match_pos , &slen, &(s->match), exp);
if (error) {
free(s);
return error;
}
error = ofl_utils_count_ofp_instructions((struct ofp_instruction *) (buf + ROUND_UP(match_pos + s->match->length,8)),
slen, &s->instructions_num);
if (error) {
ofl_structs_free_match(s->match, exp);
free(s);
return error;
}
s->instructions = (struct ofl_instruction_header **)malloc(s->instructions_num * sizeof(struct ofl_instruction_header *));
inst = (struct ofp_instruction *) (buf + ROUND_UP(match_pos + s->match->length,8));
for (i = 0; i < s->instructions_num; i++) {
error = ofl_structs_instructions_unpack(inst, &slen, &(s->instructions[i]), exp);
if (error) {
OFL_UTILS_FREE_ARR_FUN2(s->instructions, i,
ofl_structs_free_instruction, exp);
free(s);
return error;
}
inst = (struct ofp_instruction *)((uint8_t *)inst + ntohs(inst->len));
}
if (slen != 0) {
*len = *len - ntohs(src->length) + slen;
OFL_LOG_WARN(LOG_MODULE, "The received flow stats contained extra bytes (%zu).", slen);
ofl_structs_free_flow_stats(s, exp);
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
*len -= ntohs(src->length);
*dst = s;
return 0;
}
