ofl_err
ofl_actions_unpack(struct ofp_action_header *src, size_t *len, struct ofl_action_header **dst, struct ofl_exp *exp) {
if (*len < sizeof(struct ofp_action_header)) {
OFL_LOG_WARN(LOG_MODULE, "Received action is too short (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
if (*len < ntohs(src->len)) {
OFL_LOG_WARN(LOG_MODULE, "Received action has invalid length (set to %u, but only %zu received).", ntohs(src->len), *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
if ((ntohs(src->len) % 8) != 0) {
OFL_LOG_WARN(LOG_MODULE, "Received action length is not a multiple of 64 bits (%u).", ntohs(src->len));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
switch (ntohs(src->type)) {
case OFPAT_OUTPUT: {
struct ofp_action_output *sa;
struct ofl_action_output *da;
if (*len < sizeof(struct ofp_action_output)) {
OFL_LOG_WARN(LOG_MODULE, "Received OUTPUT action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_output *)src;
if (ntohl(sa->port) == 0 ||
(ntohl(sa->port) > OFPP_MAX && ntohl(sa->port) < OFPP_IN_PORT) ||
ntohl(sa->port) == OFPP_ANY) {
if (OFL_LOG_IS_WARN_ENABLED(LOG_MODULE)) {
char *ps = ofl_port_to_string(ntohl(sa->port));
OFL_LOG_WARN(LOG_MODULE, "Received OUTPUT action has invalid port (%s).", ps);
free(ps);
}
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_OUT_PORT);
}
da = (struct ofl_action_output *)malloc(sizeof(struct ofl_action_output));
da->port = ntohl(sa->port);
da->max_len = ntohs(sa->max_len);
*len -= sizeof(struct ofp_action_output);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_COPY_TTL_OUT: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_COPY_TTL_IN: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_SET_MPLS_TTL: {
struct ofp_action_mpls_ttl *sa;
struct ofl_action_mpls_ttl *da;
if (*len < sizeof(struct ofp_action_mpls_ttl)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_MPLS_TTL action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_mpls_ttl *)src;
da = (struct ofl_action_mpls_ttl *)malloc(sizeof(struct ofl_action_mpls_ttl));
da->mpls_ttl = sa->mpls_ttl;
*len -= sizeof(struct ofp_action_mpls_ttl);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_DEC_MPLS_TTL: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_mpls_ttl);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_PUSH_VLAN:
case OFPAT_PUSH_PBB:
case OFPAT_PUSH_MPLS: {
struct ofp_action_push *sa;
struct ofl_action_push *da;
if (*len < sizeof(struct ofp_action_push)) {
OFL_LOG_WARN(LOG_MODULE, "Received PUSH_VLAN/MPLS/PBB action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_push *)src;
if (((ntohs(src->type) == OFPAT_PUSH_VLAN) &&
(ntohs(sa->ethertype) != ETH_TYPE_VLAN &&
ntohs(sa->ethertype) != ETH_TYPE_VLAN_PBB)) ||
((ntohs(src->type) == OFPAT_PUSH_MPLS) &&
(ntohs(sa->ethertype) != ETH_TYPE_MPLS &&
ntohs(sa->ethertype) != ETH_TYPE_MPLS_MCAST)) ||
((ntohs(src->type) == OFPAT_PUSH_PBB) &&
(ntohs(sa->ethertype) != ETH_TYPE_PBB))) {
OFL_LOG_WARN(LOG_MODULE, "Received PUSH_VLAN/MPLS/PBB has invalid eth type. (%u)", ntohs(sa->ethertype));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_push *)malloc(sizeof(struct ofl_action_push));
da->ethertype = ntohs(sa->ethertype);
*len -= sizeof(struct ofp_action_push);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_POP_VLAN:
case OFPAT_POP_PBB: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_POP_MPLS: {
struct ofp_action_pop_mpls *sa;
struct ofl_action_pop_mpls *da;
if (*len < sizeof(struct ofp_action_pop_mpls)) {
OFL_LOG_WARN(LOG_MODULE, "Received POP_MPLS action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_pop_mpls *)src;
da = (struct ofl_action_pop_mpls *)malloc(sizeof(struct ofl_action_pop_mpls));
da->ethertype = ntohs(sa->ethertype);
*len -= sizeof(struct ofp_action_pop_mpls);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_QUEUE: {
struct ofp_action_set_queue *sa;
struct ofl_action_set_queue *da;
if (*len < sizeof(struct ofp_action_set_queue)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_QUEUE action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_set_queue *)src;
da = (struct ofl_action_set_queue *)malloc(sizeof(struct ofl_action_set_queue));
da->queue_id = ntohl(sa->queue_id);
*len -= sizeof(struct ofp_action_set_queue);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_GROUP: {
struct ofp_action_group *sa;
struct ofl_action_group *da;
if (*len < sizeof(struct ofp_action_group)) {
OFL_LOG_WARN(LOG_MODULE, "Received GROUP action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_group *)src;
if (ntohl(sa->group_id) > OFPG_MAX) {
if (OFL_LOG_IS_WARN_ENABLED(LOG_MODULE)) {
char *gs = ofl_group_to_string(ntohl(sa->group_id));
OFL_LOG_WARN(LOG_MODULE, "Received GROUP action has invalid group id (%s).", gs);
free(gs);
}
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_OUT_GROUP);
}
da = (struct ofl_action_group *)malloc(sizeof(struct ofl_action_group));
da->group_id = ntohl(sa->group_id);
*len -= sizeof(struct ofp_action_group);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_NW_TTL: {
struct ofp_action_nw_ttl *sa;
struct ofl_action_set_nw_ttl *da;
if (*len < sizeof(struct ofp_action_nw_ttl)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_TTL action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_nw_ttl *)src;
da = (struct ofl_action_set_nw_ttl *)malloc(sizeof(struct ofl_action_set_nw_ttl));
da->nw_ttl = sa->nw_ttl;
*len -= sizeof(struct ofp_action_nw_ttl);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_DEC_NW_TTL: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_SET_FIELD: {
struct ofp_action_set_field *sa;
struct ofl_action_set_field *da;
uint8_t *value;
sa = (struct ofp_action_set_field*) src;
da = (struct ofl_action_set_field *)malloc(sizeof(struct ofl_action_set_field));
da->field = (struct ofl_match_tlv*) malloc(sizeof(struct ofl_match_tlv));
memcpy(&da->field->header,sa->field,4);
da->field->header = ntohl(da->field->header);
value = (uint8_t *) src + sizeof (struct ofp_action_set_field);
da->field->value = malloc(OXM_LENGTH(da->field->header));
/*TODO: need to check if other fields are valid */
if(da->field->header == OXM_OF_IN_PORT || da->field->header == OXM_OF_IN_PHY_PORT
|| da->field->header == OXM_OF_METADATA
|| da->field->header == OXM_OF_IPV6_EXTHDR){
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_SET_TYPE);
}
switch(OXM_LENGTH(da->field->header)){
case 1:
case 6:
case 16:
memcpy(da->field->value , value, OXM_LENGTH(da->field->header));
break;
case 2:{
uint16_t v = ntohs(*((uint16_t*) value));
memcpy(da->field->value , &v, OXM_LENGTH(da->field->header));
break;
}
case 4:{
uint32_t v;
uint8_t field = OXM_FIELD(da->field->header);
if( field != 11 && field != 12 && field != 22 && field != 23)
v = htonl(*((uint32_t*) value));
else v = *((uint32_t*) value);
memcpy(da->field->value , &v, OXM_LENGTH(da->field->header));
break;
}
case 8:{
uint64_t v = hton64(*((uint64_t*) value));
memcpy(da->field->value , &v, OXM_LENGTH(da->field->header));
break;
}
}
*len -= ROUND_UP(ntohs(src->len),8);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_EXPERIMENTER: {
ofl_err error;
if (*len < sizeof(struct ofp_action_experimenter_header)) {
OFL_LOG_WARN(LOG_MODULE, "Received EXPERIMENTER action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
if (exp == NULL || exp->act == NULL || exp->act->unpack == NULL) {
OFL_LOG_WARN(LOG_MODULE, "Received EXPERIMENTER action, but no callback is given.");
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_EXPERIMENTER);
}
error = exp->act->unpack(src, len, dst);
if (error) {
return error;
}
break;
}
default: {
OFL_LOG_WARN(LOG_MODULE, "Received unknown action type (%u).", ntohs(src->type));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE);
}
}
(*dst)->type = (enum ofp_action_type)ntohs(src->type);
return 0;
}
ofl_err
ofl_structs_group_desc_stats_unpack(struct ofp_group_desc_stats *src, size_t *len, struct ofl_group_desc_stats **dst, struct ofl_exp *exp, char *errbuf) {
struct ofl_group_desc_stats *dm;
struct ofp_bucket *bucket;
ofl_err error;
size_t dlen;
size_t i;
if (*len < sizeof(struct ofp_group_desc_stats)) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received group desc stats reply is too short (%zu).", *len);
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
if (*len < ntohs(src->length)) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received group desc 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 (ntohl(src->group_id) > OFPG_MAX) {
if (errbuf != NULL) {
char *gs = ofl_group_to_string(ntohl(src->group_id));
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received group desc stats has invalid group_id (%s).", gs);
free(gs);
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
dlen = ntohs(src->length) - sizeof(struct ofp_group_desc_stats);
dm = (struct ofl_group_desc_stats *)malloc(sizeof(struct ofl_group_desc_stats));
dm->type = src->type;
dm->group_id = ntohl(src->group_id);
error = ofl_utils_count_ofp_buckets(src->buckets, dlen, &dm->buckets_num, errbuf);
if (error) {
free(dm);
return error;
}
dm->buckets = (struct ofl_bucket **)malloc(dm->buckets_num * sizeof(struct ofl_bucket *));
bucket = src->buckets;
for (i = 0; i < dm->buckets_num; i++) {
error = ofl_structs_bucket_unpack(bucket, &dlen, dm->type, &(dm->buckets[i]), exp, errbuf);
if (error) {
OFL_UTILS_FREE_ARR_FUN3(dm->buckets, i,
ofl_structs_free_bucket, exp, errbuf);
free (dm);
return error;
}
bucket = (struct ofp_bucket *)((uint8_t *)bucket + ntohs(bucket->len));
}
if (dlen != 0) {
*len = *len - ntohs(src->length) + dlen;
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "The received group desc stats contained extra bytes (%zu).", dlen);
}
ofl_structs_free_group_desc_stats(dm, exp, NULL);
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
*len -= ntohs(src->length);
*dst = dm;
return 0;
}
ofl_err
ofl_actions_unpack(struct ofp_action_header *src, size_t *len, struct ofl_action_header **dst, struct ofl_exp *exp) {
if (*len < sizeof(struct ofp_action_header)) {
OFL_LOG_WARN(LOG_MODULE, "Received action is too short (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
if (*len < ntohs(src->len)) {
OFL_LOG_WARN(LOG_MODULE, "Received action has invalid length (set to %u, but only %zu received).", ntohs(src->len), *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
if ((ntohs(src->len) % 8) != 0) {
OFL_LOG_WARN(LOG_MODULE, "Received action length is not a multiple of 64 bits (%u).", ntohs(src->len));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
switch (ntohs(src->type)) {
case OFPAT_OUTPUT: {
struct ofp_action_output *sa;
struct ofl_action_output *da;
if (*len < sizeof(struct ofp_action_output)) {
OFL_LOG_WARN(LOG_MODULE, "Received OUTPUT action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_output *)src;
if (ntohl(sa->port) == 0 ||
(ntohl(sa->port) > OFPP_MAX && ntohl(sa->port) < OFPP_IN_PORT) ||
ntohl(sa->port) == OFPP_ANY) {
if (OFL_LOG_IS_WARN_ENABLED(LOG_MODULE)) {
char *ps = ofl_port_to_string(ntohl(sa->port));
OFL_LOG_WARN(LOG_MODULE, "Received OUTPUT action has invalid port (%s).", ps);
free(ps);
}
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_OUT_PORT);
}
da = (struct ofl_action_output *)malloc(sizeof(struct ofl_action_output));
da->port = ntohl(sa->port);
da->max_len = ntohs(sa->max_len);
*len -= sizeof(struct ofp_action_output);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_VLAN_VID: {
struct ofp_action_vlan_vid *sa;
struct ofl_action_vlan_vid *da;
if (*len < sizeof(struct ofp_action_vlan_vid)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_VLAN_VID action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_vlan_vid *)src;
if (ntohs(sa->vlan_vid) > VLAN_VID_MAX) {
if (OFL_LOG_IS_WARN_ENABLED(LOG_MODULE)) {
char *vs = ofl_vlan_vid_to_string(ntohs(sa->vlan_vid));
OFL_LOG_WARN(LOG_MODULE, "Received SET_VLAN_VID action has invalid vid (%s).", vs);
free(vs);
}
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_vlan_vid *)malloc(sizeof(struct ofl_action_vlan_vid));
da->vlan_vid = ntohs(sa->vlan_vid);
*len -= sizeof(struct ofp_action_vlan_vid);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_VLAN_PCP: {
struct ofp_action_vlan_pcp *sa;
struct ofl_action_vlan_pcp *da;
if (*len < sizeof(struct ofp_action_vlan_pcp)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_VLAN_PCP action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_vlan_pcp *)src;
if (sa->vlan_pcp > VLAN_PCP_MAX) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_VLAN_PCP action has invalid pcp (%u).", sa->vlan_pcp);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_vlan_pcp *)malloc(sizeof(struct ofl_action_vlan_pcp));
da->vlan_pcp = sa->vlan_pcp;
*len -= sizeof(struct ofp_action_vlan_pcp);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_DL_SRC:
case OFPAT_SET_DL_DST: {
struct ofp_action_dl_addr *sa;
struct ofl_action_dl_addr *da;
if (*len < sizeof(struct ofp_action_dl_addr)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_DL_SRC/DST action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_dl_addr *)src;
da = (struct ofl_action_dl_addr *)malloc(sizeof(struct ofl_action_dl_addr));
memcpy(&(da->dl_addr), &(sa->dl_addr), OFP_ETH_ALEN);
*len -= sizeof(struct ofp_action_dl_addr);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_NW_SRC:
case OFPAT_SET_NW_DST: {
struct ofp_action_nw_addr *sa;
struct ofl_action_nw_addr *da;
if (*len < sizeof(struct ofp_action_nw_addr)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_SRC/DST action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_nw_addr *)src;
da = (struct ofl_action_nw_addr *)malloc(sizeof(struct ofl_action_nw_addr));
da->nw_addr = sa->nw_addr;
*len -= sizeof(struct ofp_action_nw_addr);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_NW_TOS: {
struct ofp_action_nw_tos *sa;
struct ofl_action_nw_tos *da;
if (*len < sizeof(struct ofp_action_nw_tos)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_TOS action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_nw_tos *)src;
if (sa->nw_tos > IP_DSCP_MASK) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_TOS action has invalid tos value (%u).", sa->nw_tos);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_nw_tos *)malloc(sizeof(struct ofl_action_nw_tos));
da->nw_tos = sa->nw_tos;
*len -= sizeof(struct ofp_action_nw_tos);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_NW_ECN: {
struct ofp_action_nw_ecn *sa;
struct ofl_action_nw_ecn *da;
if (*len < sizeof(struct ofp_action_nw_ecn)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_ECN action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_nw_ecn *)src;
if (sa->nw_ecn > IP_ECN_MASK) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_ECN action has invalid ecn value (%u).", sa->nw_ecn);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_nw_ecn *)malloc(sizeof(struct ofl_action_nw_ecn));
da->nw_ecn = sa->nw_ecn;
*len -= sizeof(struct ofp_action_nw_ecn);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_TP_SRC:
case OFPAT_SET_TP_DST: {
struct ofp_action_tp_port *sa;
struct ofl_action_tp_port *da;
if (*len < sizeof(struct ofp_action_tp_port)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_TP_SRC/DST action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_tp_port *)src;
da = (struct ofl_action_tp_port *)malloc(sizeof(struct ofl_action_tp_port));
da->tp_port = ntohs(sa->tp_port);
*len -= sizeof(struct ofp_action_tp_port);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_COPY_TTL_OUT: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_COPY_TTL_IN: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_SET_MPLS_LABEL: {
struct ofp_action_mpls_label *sa;
struct ofl_action_mpls_label *da;
if (*len < sizeof(struct ofp_action_mpls_label)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_MPLS_LABEL action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_mpls_label *)src;
if (ntohl(sa->mpls_label) > MPLS_LABEL_MAX) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_MPLS_LABEL action has invalid label value (%u).", ntohl(sa->mpls_label));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_mpls_label *)malloc(sizeof(struct ofl_action_mpls_label));
da->mpls_label = ntohl(sa->mpls_label);
*len -= sizeof(struct ofp_action_mpls_label);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_MPLS_TC: {
struct ofp_action_mpls_tc *sa;
struct ofl_action_mpls_tc *da;
if (*len < sizeof(struct ofp_action_mpls_tc)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_MPLS_TC action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_mpls_tc *)src;
if (sa->mpls_tc > MPLS_TC_MAX) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_MPLS_TC action has invalid tc value (%u).", sa->mpls_tc);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_mpls_tc *)malloc(sizeof(struct ofl_action_mpls_tc));
da->mpls_tc = sa->mpls_tc;
*len -= sizeof(struct ofp_action_mpls_tc);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_MPLS_TTL: {
struct ofp_action_mpls_ttl *sa;
struct ofl_action_mpls_ttl *da;
if (*len < sizeof(struct ofp_action_mpls_ttl)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_MPLS_TTL action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_mpls_ttl *)src;
da = (struct ofl_action_mpls_ttl *)malloc(sizeof(struct ofl_action_mpls_ttl));
da->mpls_ttl = sa->mpls_ttl;
*len -= sizeof(struct ofp_action_mpls_ttl);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_DEC_MPLS_TTL: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_mpls_ttl);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_PUSH_VLAN:
case OFPAT_PUSH_MPLS: {
struct ofp_action_push *sa;
struct ofl_action_push *da;
if (*len < sizeof(struct ofp_action_push)) {
OFL_LOG_WARN(LOG_MODULE, "Received PUSH_VLAN/MPLS action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_push *)src;
if (((ntohs(src->type) == OFPAT_PUSH_VLAN) &&
(ntohs(sa->ethertype) != ETH_TYPE_VLAN &&
ntohs(sa->ethertype) != ETH_TYPE_VLAN_PBB)) ||
((ntohs(src->type) == OFPAT_PUSH_MPLS) &&
(ntohs(sa->ethertype) != ETH_TYPE_MPLS &&
ntohs(sa->ethertype) != ETH_TYPE_MPLS_MCAST))) {
OFL_LOG_WARN(LOG_MODULE, "Received PUSH_VLAN/MPLS has invalid eth type. (%u)", ntohs(sa->ethertype));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_push *)malloc(sizeof(struct ofl_action_push));
da->ethertype = ntohs(sa->ethertype);
*len -= sizeof(struct ofp_action_push);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_POP_VLAN: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_POP_MPLS: {
struct ofp_action_pop_mpls *sa;
struct ofl_action_pop_mpls *da;
if (*len < sizeof(struct ofp_action_pop_mpls)) {
OFL_LOG_WARN(LOG_MODULE, "Received POP_MPLS action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_pop_mpls *)src;
da = (struct ofl_action_pop_mpls *)malloc(sizeof(struct ofl_action_pop_mpls));
da->ethertype = ntohs(sa->ethertype);
*len -= sizeof(struct ofp_action_pop_mpls);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_QUEUE: {
struct ofp_action_set_queue *sa;
struct ofl_action_set_queue *da;
if (*len < sizeof(struct ofp_action_set_queue)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_QUEUE action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_set_queue *)src;
da = (struct ofl_action_set_queue *)malloc(sizeof(struct ofl_action_set_queue));
da->queue_id = ntohl(sa->queue_id);
*len -= sizeof(struct ofp_action_set_queue);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_GROUP: {
struct ofp_action_group *sa;
struct ofl_action_group *da;
if (*len < sizeof(struct ofp_action_group)) {
OFL_LOG_WARN(LOG_MODULE, "Received GROUP action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_group *)src;
if (ntohl(sa->group_id) > OFPG_MAX) {
if (OFL_LOG_IS_WARN_ENABLED(LOG_MODULE)) {
char *gs = ofl_group_to_string(ntohl(sa->group_id));
OFL_LOG_WARN(LOG_MODULE, "Received GROUP action has invalid group id (%s).", gs);
free(gs);
}
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
}
da = (struct ofl_action_group *)malloc(sizeof(struct ofl_action_group));
da->group_id = ntohl(sa->group_id);
*len -= sizeof(struct ofp_action_group);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_SET_NW_TTL: {
struct ofp_action_nw_ttl *sa;
struct ofl_action_set_nw_ttl *da;
if (*len < sizeof(struct ofp_action_nw_ttl)) {
OFL_LOG_WARN(LOG_MODULE, "Received SET_NW_TTL action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
sa = (struct ofp_action_nw_ttl *)src;
da = (struct ofl_action_set_nw_ttl *)malloc(sizeof(struct ofl_action_set_nw_ttl));
da->nw_ttl = ntohs(sa->nw_ttl);
*len -= sizeof(struct ofp_action_nw_ttl);
*dst = (struct ofl_action_header *)da;
break;
}
case OFPAT_DEC_NW_TTL: {
//ofp_action_header length was already checked
*len -= sizeof(struct ofp_action_header);
*dst = (struct ofl_action_header *)malloc(sizeof(struct ofl_action_header));
break;
}
case OFPAT_EXPERIMENTER: {
ofl_err error;
if (*len < sizeof(struct ofp_action_experimenter_header)) {
OFL_LOG_WARN(LOG_MODULE, "Received EXPERIMENTER action has invalid length (%zu).", *len);
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
if (exp == NULL || exp->act == NULL || exp->act->unpack == NULL) {
OFL_LOG_WARN(LOG_MODULE, "Received EXPERIMENTER action, but no callback is given.");
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_EXPERIMENTER);
}
error = exp->act->unpack(src, len, dst);
if (error) {
return error;
}
break;
}
default: {
OFL_LOG_WARN(LOG_MODULE, "Received unknown action type (%u).", ntohs(src->type));
return ofl_error(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE);
}
}
(*dst)->type = (enum ofp_action_type)ntohs(src->type);
return 0;
}
ofl_err
ofl_structs_group_stats_unpack(struct ofp_group_stats *src, size_t *len, struct ofl_group_stats **dst, char *errbuf) {
struct ofl_group_stats *s;
struct ofp_bucket_counter *c;
ofl_err error;
size_t slen;
size_t i;
if (*len < sizeof(struct ofp_group_stats)) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received group desc stats reply is too short (%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 group 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 (ntohl(src->group_id) > OFPG_MAX) {
if (errbuf != NULL) {
char *gs = ofl_group_to_string(ntohl(src->group_id));
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received group stats has invalid group_id (%s).", gs);
free(gs);
}
return ofl_error(OFPET_BAD_ACTION, OFPBRC_BAD_LEN);
}
slen = ntohs(src->length) - sizeof(struct ofp_group_stats);
s = (struct ofl_group_stats *)malloc(sizeof(struct ofl_group_stats));
s->group_id = ntohl(src->group_id);
s->ref_count = ntohl(src->ref_count);
s->packet_count = ntoh64(src->packet_count);
s->byte_count = ntoh64(src->byte_count);
error = ofl_utils_count_ofp_bucket_counters(src->bucket_stats, slen, &s->counters_num);
if (error) {
free(s);
return error;
}
s->counters = (struct ofl_bucket_counter **)malloc(s->counters_num * sizeof(struct ofl_bucket_counter *));
c = src->bucket_stats;
for (i = 0; i < s->counters_num; i++) {
error = ofl_structs_bucket_counter_unpack(c, &slen, &(s->counters[i]), errbuf);
if (error) {
OFL_UTILS_FREE_ARR(s->counters, i);
free(s);
return error;
}
c = (struct ofp_bucket_counter *)((uint8_t *)c + sizeof(struct ofp_bucket_counter));
}
if (slen != 0) {
*len = *len - ntohs(src->length) + slen;
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "The received group stats contained extra bytes (%zu).", slen);
}
ofl_structs_free_group_stats(s);
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
*len -= ntohs(src->length);
*dst = s;
return 0;
}
static ofl_err
ofl_msg_unpack_group_mod(struct ofp_header *src, size_t *len, struct ofl_msg_header **msg, struct ofl_exp *exp, char *errbuf) {
struct ofp_group_mod *sm;
struct ofl_msg_group_mod *dm;
struct ofp_bucket *bucket;
ofl_err error;
size_t i;
if (*len < sizeof(struct ofp_group_mod)) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received GROUP_MOD message has invalid length (%zu).", *len);
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
*len -= sizeof(struct ofp_group_mod);
sm = (struct ofp_group_mod *)src;
if (ntohs(sm->command) > OFPGC_DELETE) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received GROUP_MOD message with invalid command (%u).", ntohs(sm->command));
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
}
if (ntohs(sm->type) > OFPGT_FF && ntohs(sm->type) < 128 /* experimenter */) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received GROUP_MOD message with invalid type (%u).", ntohs(sm->type));
}
return ofl_error(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
}
if (ntohl(sm->group_id) > OFPG_MAX &&
!(ntohs(sm->command) == OFPGC_DELETE && ntohl(sm->group_id) == OFPG_ALL)) {
if (errbuf != NULL) {
char *gs = ofl_group_to_string(ntohl(sm->group_id));
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received GROUP_MOD message with invalid group id (%s).", gs);
free(gs);
}
return ofl_error(OFPET_GROUP_MOD_FAILED, OFPGMFC_INVALID_GROUP);
}
dm = (struct ofl_msg_group_mod *)malloc(sizeof(struct ofl_msg_group_mod));
dm->command = (enum ofp_group_mod_command)ntohs(sm->command);
dm->type = sm->type;
dm->group_id = ntohl(sm->group_id);
error = ofl_utils_count_ofp_buckets(&(sm->buckets), *len, &dm->buckets_num, errbuf);
if (error) {
free(dm);
return error;
}
if (dm->command == OFPGC_DELETE && dm->buckets_num > 0) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received DELETE group command with buckets (%zu).", dm->buckets_num);
}
free(dm);
return ofl_error(OFPET_GROUP_MOD_FAILED, OFPGMFC_INVALID_GROUP);
}
if (dm->type == OFPGT_INDIRECT && dm->buckets_num != 1) {
if (errbuf != NULL) {
snprintf(errbuf, OFL_ERRBUF_SIZE, "Received INDIRECT group doesn't have exactly one bucket (%zu).", dm->buckets_num);
}
free(dm);
return ofl_error(OFPET_GROUP_MOD_FAILED, OFPGMFC_INVALID_GROUP);
}
dm->buckets = (struct ofl_bucket **)malloc(dm->buckets_num * sizeof(struct ofl_bucket *));
bucket = sm->buckets;
for (i = 0; i < dm->buckets_num; i++) {
error = ofl_structs_bucket_unpack(bucket, len, dm->type, &(dm->buckets[i]), exp, errbuf);
if (error) {
OFL_UTILS_FREE_ARR_FUN3(dm->buckets, i,
ofl_structs_free_bucket, exp, errbuf);
free(dm);
return error;
}
bucket = (struct ofp_bucket *)((uint8_t *)bucket + ntohs(bucket->len));
}
*msg = (struct ofl_msg_header *)dm;
return 0;
}