}
}
+static enum ofperr
+set_field_from_openflow(const struct ofp12_action_set_field *oasf,
+ struct ofpbuf *ofpacts)
+{
+ uint16_t oasf_len = ntohs(oasf->len);
+ uint32_t oxm_header = ntohl(oasf->dst);
+ uint8_t oxm_length = NXM_LENGTH(oxm_header);
+ struct ofpact_set_field *sf;
+ const struct mf_field *mf;
+
+ /* ofp12_action_set_field is padded to 64 bits by zero */
+ if (oasf_len != ROUND_UP(sizeof *oasf + oxm_length, 8)) {
+ return OFPERR_OFPBAC_BAD_SET_LEN;
+ }
+ if (!is_all_zeros((const uint8_t *)oasf + sizeof *oasf + oxm_length,
+ oasf_len - oxm_length - sizeof *oasf)) {
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
+
+ if (NXM_HASMASK(oxm_header)) {
+ return OFPERR_OFPBAC_BAD_SET_TYPE;
+ }
+ mf = mf_from_nxm_header(oxm_header);
+ if (!mf) {
+ return OFPERR_OFPBAC_BAD_SET_TYPE;
+ }
+ ovs_assert(mf->n_bytes == oxm_length);
+ /* oxm_length is now validated to be compatible with mf_value. */
+ if (!mf->writable) {
+ VLOG_WARN_RL(&rl, "destination field %s is not writable", mf->name);
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
+ sf = ofpact_put_SET_FIELD(ofpacts);
+ sf->field = mf;
+ memcpy(&sf->value, oasf + 1, mf->n_bytes);
+
+ /* The value must be valid for match and must have the OFPVID_PRESENT bit
+ * on for OXM_OF_VLAN_VID. */
+ if (!mf_is_value_valid(mf, &sf->value)
+ || (mf->id == MFF_VLAN_VID
+ && !(sf->value.be16 & htons(OFPVID12_PRESENT)))) {
+ struct ds ds = DS_EMPTY_INITIALIZER;
+ mf_format(mf, &sf->value, NULL, &ds);
+ VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s",
+ mf->name, ds_cstr(&ds));
+ ds_destroy(&ds);
+
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
+ return 0;
+}
+
+static void
+set_field_to_openflow12(const struct ofpact_set_field *sf,
+ struct ofpbuf *openflow)
+{
+ uint16_t padded_value_len = ROUND_UP(sf->field->n_bytes, 8);
+ struct ofp12_action_set_field *oasf;
+ char *value;
+
+ oasf = ofputil_put_OFPAT12_SET_FIELD(openflow);
+ oasf->dst = htonl(sf->field->oxm_header);
+ oasf->len = htons(sizeof *oasf + padded_value_len);
+
+ value = ofpbuf_put_zeros(openflow, padded_value_len);
+ memcpy(value, &sf->value, sf->field->n_bytes);
+}
+
+/* Convert 'sf' to one or two REG_LOADs. */
+static void
+set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow)
+{
+ const struct mf_field *mf = sf->field;
+ struct nx_action_reg_load *narl;
+
+ if (mf->n_bits > 64) {
+ ovs_assert(mf->n_bytes == 16); /* IPv6 addr. */
+ /* Split into 64bit chunks */
+ /* Lower bits first. */
+ narl = ofputil_put_NXAST_REG_LOAD(openflow);
+ narl->ofs_nbits = nxm_encode_ofs_nbits(0, 64);
+ narl->dst = htonl(mf->nxm_header);
+ memcpy(&narl->value, &sf->value.ipv6.s6_addr[8], sizeof narl->value);
+ /* Higher bits next. */
+ narl = ofputil_put_NXAST_REG_LOAD(openflow);
+ narl->ofs_nbits = nxm_encode_ofs_nbits(64, mf->n_bits - 64);
+ narl->dst = htonl(mf->nxm_header);
+ memcpy(&narl->value, &sf->value.ipv6.s6_addr[0], sizeof narl->value);
+ } else {
+ narl = ofputil_put_NXAST_REG_LOAD(openflow);
+ narl->ofs_nbits = nxm_encode_ofs_nbits(0, mf->n_bits);
+ narl->dst = htonl(mf->nxm_header);
+ memset(&narl->value, 0, 8 - mf->n_bytes);
+ memcpy((char*)&narl->value + (8 - mf->n_bytes),
+ &sf->value, mf->n_bytes);
+ }
+}
+
+static void
+set_field_to_openflow(const struct ofpact_set_field *sf,
+ struct ofpbuf *openflow)
+{
+ struct ofp_header *oh = (struct ofp_header *)openflow->l2;
+
+ if (oh->version >= OFP12_VERSION) {
+ set_field_to_openflow12(sf, openflow);
+ } else {
+ set_field_to_nxast(sf, openflow);
+ }
+}
+
static enum ofperr
output_from_openflow11(const struct ofp11_action_output *oao,
struct ofpbuf *out)
break;
case OFPUTIL_OFPAT12_SET_FIELD:
- return nxm_reg_load_from_openflow12_set_field(&a->set_field, out);
+ return set_field_from_openflow(&a->set_field, out);
case OFPUTIL_OFPAT11_SET_MPLS_TTL:
ofpact_put_SET_MPLS_TTL(out)->ttl = a->ofp11_mpls_ttl.mpls_ttl;
ofpact_is_set_action(const struct ofpact *a)
{
switch (a->type) {
+ case OFPACT_SET_FIELD:
case OFPACT_REG_LOAD:
case OFPACT_SET_ETH_DST:
case OFPACT_SET_ETH_SRC:
case OFPACT_PUSH_MPLS:
case OFPACT_PUSH_VLAN:
case OFPACT_REG_LOAD:
+ case OFPACT_SET_FIELD:
case OFPACT_SET_ETH_DST:
case OFPACT_SET_ETH_SRC:
case OFPACT_SET_IP_DSCP:
case OFPACT_SET_L4_DST_PORT:
case OFPACT_REG_MOVE:
case OFPACT_REG_LOAD:
+ case OFPACT_SET_FIELD:
case OFPACT_STACK_PUSH:
case OFPACT_STACK_POP:
case OFPACT_DEC_TTL:
uint8_t table_id, bool enforce_consistency)
{
const struct ofpact_enqueue *enqueue;
+ const struct mf_field *mf;
switch (a->type) {
case OFPACT_OUTPUT:
case OFPACT_REG_LOAD:
return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow);
+ case OFPACT_SET_FIELD:
+ mf = ofpact_get_SET_FIELD(a)->field;
+ /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */
+ if (!mf_are_prereqs_ok(mf, flow) ||
+ (mf->id == MFF_VLAN_VID && !(flow->vlan_tci & htons(VLAN_CFI)))) {
+ VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisities",
+ mf->name);
+ return OFPERR_OFPBAC_MATCH_INCONSISTENT;
+ }
+ return 0;
+
case OFPACT_STACK_PUSH:
return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow);
nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out);
break;
+ case OFPACT_SET_FIELD:
+ set_field_to_openflow(ofpact_get_SET_FIELD(a), out);
+ break;
+
case OFPACT_STACK_PUSH:
nxm_stack_push_to_nxast(ofpact_get_STACK_PUSH(a), out);
break;
case OFPACT_BUNDLE:
case OFPACT_REG_MOVE:
case OFPACT_REG_LOAD:
+ case OFPACT_SET_FIELD:
case OFPACT_STACK_PUSH:
case OFPACT_STACK_POP:
case OFPACT_DEC_TTL:
case OFPACT_BUNDLE:
case OFPACT_REG_MOVE:
case OFPACT_REG_LOAD:
+ case OFPACT_SET_FIELD:
case OFPACT_STACK_PUSH:
case OFPACT_STACK_POP:
case OFPACT_SET_TUNNEL:
case OFPACT_SET_L4_DST_PORT:
case OFPACT_REG_MOVE:
case OFPACT_REG_LOAD:
+ case OFPACT_SET_FIELD:
case OFPACT_STACK_PUSH:
case OFPACT_STACK_POP:
case OFPACT_DEC_TTL:
const struct ofpact_metadata *metadata;
const struct ofpact_tunnel *tunnel;
const struct ofpact_sample *sample;
+ const struct ofpact_set_field *set_field;
+ const struct mf_field *mf;
ofp_port_t port;
switch (a->type) {
nxm_format_reg_load(ofpact_get_REG_LOAD(a), s);
break;
+ case OFPACT_SET_FIELD:
+ set_field = ofpact_get_SET_FIELD(a);
+ mf = set_field->field;
+ ds_put_format(s, "set_field:");
+ mf_format(mf, &set_field->value, NULL, s);
+ ds_put_format(s, "->%s", mf->name);
+ break;
+
case OFPACT_STACK_PUSH:
nxm_format_stack_push(ofpact_get_STACK_PUSH(a), s);
break;
ofpbuf_put_zeros(ofpacts, OFPACT_ALIGNTO - rem);
}
}
-
-void
-ofpact_set_field_init(struct ofpact_reg_load *load, const struct mf_field *mf,
- const void *src)
-{
- load->ofpact.compat = OFPUTIL_OFPAT12_SET_FIELD;
- load->dst.field = mf;
- load->dst.ofs = 0;
- load->dst.n_bits = mf->n_bits;
- bitwise_copy(src, mf->n_bytes, load->dst.ofs,
- &load->subvalue, sizeof load->subvalue, 0, mf->n_bits);
-}