{
const char *full_s = s;
uint64_t value = strtoull(s, (char **) &s, 0);
- ovs_be64 value_be = htonll(value);
if (strncmp(s, "->", 2)) {
ovs_fatal(0, "%s: missing `->' following value", full_s);
full_s, value, load->dst.n_bits);
}
- memset(&load->subvalue, 0, sizeof &load->subvalue);
- bitwise_copy(&value_be, sizeof value_be, 0,
- &load->subvalue, sizeof load->subvalue, load->dst.ofs,
- load->dst.n_bits);
+ load->subvalue.be64[0] = htonll(0);
+ load->subvalue.be64[1] = htonll(value);
}
\f
/* nxm_format_reg_move(), nxm_format_reg_load(). */
mf_format_subfield(&move->dst, s);
}
-void
-nxm_format_reg_load(const struct ofpact_reg_load *load, struct ds *s)
+static void
+set_field_format(const struct ofpact_reg_load *load, struct ds *s)
{
- union mf_subvalue right_justified;
-
- memset(&right_justified, 0, sizeof right_justified);
- bitwise_copy(&load->subvalue, sizeof load->subvalue, load->dst.ofs,
- &right_justified, sizeof right_justified, 0,
- load->dst.n_bits);
+ const struct mf_field *mf = load->dst.field;
+ union mf_value value;
+
+ assert(load->ofpact.compat == OFPUTIL_OFPAT12_SET_FIELD);
+ ds_put_format(s, "set_field:");
+ memset(&value, 0, sizeof value);
+ bitwise_copy(&load->subvalue, sizeof load->subvalue, 0,
+ &value, mf->n_bytes, 0, load->dst.n_bits);
+ mf_format(mf, &value, NULL, s);
+ ds_put_format(s, "->%s", mf->name);
+}
+static void
+load_format(const struct ofpact_reg_load *load, struct ds *s)
+{
ds_put_cstr(s, "load:");
- mf_format_subvalue(&right_justified, s);
+ mf_format_subvalue(&load->subvalue, s);
ds_put_cstr(s, "->");
mf_format_subfield(&load->dst, s);
}
+
+void
+nxm_format_reg_load(const struct ofpact_reg_load *load, struct ds *s)
+{
+ if (load->ofpact.compat == OFPUTIL_OFPAT12_SET_FIELD) {
+ set_field_format(load, s);
+ } else {
+ load_format(load, s);
+ }
+}
\f
enum ofperr
nxm_reg_move_from_openflow(const struct nx_action_reg_move *narm,
load->dst.field = mf_from_nxm_header(ntohl(narl->dst));
load->dst.ofs = nxm_decode_ofs(narl->ofs_nbits);
load->dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits);
- memset(&load->subvalue, 0, sizeof &load->subvalue);
- bitwise_copy(&narl->value, sizeof narl->value, 0,
- &load->subvalue, sizeof load->subvalue, load->dst.ofs,
- load->dst.n_bits);
+ load->subvalue.be64[1] = narl->value;
/* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in
* narl->value. */
return nxm_reg_load_check(load, NULL);
}
+
+enum ofperr
+nxm_reg_load_from_openflow12_set_field(
+ 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_reg_load *load;
+ 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_ARGUMENT;
+ }
+ if (!is_all_zeros((const uint8_t *)(oasf) + sizeof *oasf + oxm_length,
+ oasf_len - oxm_length - sizeof *oasf)) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+
+ if (NXM_HASMASK(oxm_header)) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ mf = mf_from_nxm_header(oxm_header);
+ if (!mf) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ load = ofpact_put_REG_LOAD(ofpacts);
+ load->ofpact.compat = OFPUTIL_OFPAT12_SET_FIELD;
+ load->dst.field = mf;
+ load->dst.ofs = 0;
+ load->dst.n_bits = mf->n_bits;
+ bitwise_copy(oasf + 1, mf->n_bytes, load->dst.ofs,
+ &load->subvalue, sizeof load->subvalue, 0, mf->n_bits);
+
+ return nxm_reg_load_check(load, NULL);
+}
\f
enum ofperr
nxm_reg_move_check(const struct ofpact_reg_move *move, const struct flow *flow)
narm->dst = htonl(move->dst.field->nxm_header);
}
-void
-nxm_reg_load_to_nxast(const struct ofpact_reg_load *load,
- struct ofpbuf *openflow)
+static void
+reg_load_to_nxast(const struct ofpact_reg_load *load, struct ofpbuf *openflow)
{
struct nx_action_reg_load *narl;
narl = ofputil_put_NXAST_REG_LOAD(openflow);
narl->ofs_nbits = nxm_encode_ofs_nbits(load->dst.ofs, load->dst.n_bits);
narl->dst = htonl(load->dst.field->nxm_header);
- narl->value = htonll(0);
+ narl->value = load->subvalue.be64[1];
+}
+
+static void
+set_field_to_ofast(const struct ofpact_reg_load *load,
+ struct ofpbuf *openflow)
+{
+ const struct mf_field *mf = load->dst.field;
+ struct ofp12_action_set_field *oasf;
+ uint16_t padded_value_len;
+
+ oasf = ofputil_put_OFPAT12_SET_FIELD(openflow);
+ oasf->dst = htonl(mf->oxm_header);
+
+ /* Set field is the only action of variable length (so far),
+ * so handling the variable length portion is open-coded here */
+ padded_value_len = ROUND_UP(mf->n_bytes, 8);
+ ofpbuf_put_uninit(openflow, padded_value_len);
+ oasf->len = htons(ntohs(oasf->len) + padded_value_len);
+ memset(oasf + 1, 0, padded_value_len);
+
bitwise_copy(&load->subvalue, sizeof load->subvalue, load->dst.ofs,
- &narl->value, sizeof narl->value, 0, load->dst.n_bits);
+ oasf + 1, mf->n_bytes, load->dst.ofs, load->dst.n_bits);
+ return;
+}
+
+void
+nxm_reg_load_to_nxast(const struct ofpact_reg_load *load,
+ struct ofpbuf *openflow)
+{
+
+ if (load->ofpact.compat == OFPUTIL_OFPAT12_SET_FIELD) {
+ struct ofp_header *oh = (struct ofp_header *)openflow->l2;
+
+ switch(oh->version) {
+ case OFP12_VERSION:
+ set_field_to_ofast(load, openflow);
+ break;
+
+ case OFP11_VERSION:
+ case OFP10_VERSION:
+ if (load->dst.n_bits < 64) {
+ reg_load_to_nxast(load, openflow);
+ } else {
+ /* Split into 64bit chunks */
+ int chunk, ofs;
+ for (ofs = 0; ofs < load->dst.n_bits; ofs += chunk) {
+ struct ofpact_reg_load subload = *load;
+
+ chunk = MIN(load->dst.n_bits - ofs, 64);
+
+ subload.dst.field = load->dst.field;
+ subload.dst.ofs = load->dst.ofs + ofs;
+ subload.dst.n_bits = chunk;
+ bitwise_copy(&load->subvalue, sizeof load->subvalue, ofs,
+ &subload.subvalue, sizeof subload.subvalue, 0,
+ chunk);
+ reg_load_to_nxast(&subload, openflow);
+ }
+ }
+ break;
+
+ default:
+ NOT_REACHED();
+ }
+ } else {
+ reg_load_to_nxast(load, openflow);
+ }
}
\f
/* nxm_execute_reg_move(), nxm_execute_reg_load(). */