int
ofl_msg_free_flow_removed(struct ofl_msg_flow_removed *msg, bool with_stats, struct ofl_exp *exp) {
if (with_stats) {
ofl_structs_free_flow_stats(msg->stats, exp);
}
free(msg);
return 0;
}
int
ofl_msg_free_flow_removed(struct ofl_msg_flow_removed *msg, bool with_stats, struct ofl_exp *exp, char *errbuf) {
if (with_stats) {
ofl_structs_free_flow_stats(msg->stats, exp, errbuf);
//TODO error
}
free(msg);
return 0;
}
void
flow_entry_destroy(struct flow_entry *entry) {
// NOTE: This will be called when the group entry itself destroys the
// flow; but it won't be a problem.
del_group_refs(entry);
ofl_structs_free_flow_stats(entry->stats, entry->dp->exp);
// assumes it is a standard match
//free(entry->match);
free(entry);
}
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;
}
