/* NX1.0+(21): struct nx_action_cnt_ids, ... */
NXAST_RAW_DEC_TTL_CNT_IDS,
- /* OF1.2+(25): struct ofp12_action_set_field, ... */
+ /* OF1.2-1.4(25): struct ofp12_action_set_field, ... */
OFPAT_RAW12_SET_FIELD,
- /* NX1.0+(7): struct nx_action_reg_load. */
+ /* OF1.5+(25): struct ofp12_action_set_field, ... */
+ OFPAT_RAW15_SET_FIELD,
+ /* NX1.0-1.4(7): struct nx_action_reg_load.
+ *
+ * [In OpenFlow 1.5, set_field is a superset of reg_load functionality, so
+ * we drop reg_load.] */
NXAST_RAW_REG_LOAD,
- /* OF1.5+(28): struct ofp15_action_copy_field. */
+ /* OF1.5+(28): struct ofp15_action_copy_field, ... */
OFPAT_RAW15_COPY_FIELD,
/* NX1.0-1.4(6): struct nx_action_reg_move. */
NXAST_RAW_REG_MOVE,
static void ofpacts_update_instruction_actions(struct ofpbuf *openflow,
size_t ofs);
+static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs);
static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len,
uint32_t allowed_ovsinsts);
naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs,
output_reg->src.n_bits);
- naor->src = htonl(output_reg->src.field->nxm_header);
+ naor->src = htonl(mf_oxm_header(output_reg->src.field->id, 0));
naor->max_len = htons(output_reg->max_len);
}
} else if (bundle->algorithm != NX_BD_ALG_HRW
&& bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) {
VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) bundle->algorithm);
- } else if (slave_type != NXM_OF_IN_PORT) {
+ } else if (slave_type != mf_oxm_header(MFF_IN_PORT, 0)) {
VLOG_WARN_RL(&rl, "unsupported slave type %"PRIu16, slave_type);
} else {
error = 0;
nab->algorithm = htons(bundle->algorithm);
nab->fields = htons(bundle->fields);
nab->basis = htons(bundle->basis);
- nab->slave_type = htonl(NXM_OF_IN_PORT);
+ nab->slave_type = htonl(mf_oxm_header(MFF_IN_PORT, 0));
nab->n_slaves = htons(bundle->n_slaves);
if (bundle->dst.field) {
nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs,
bundle->dst.n_bits);
- nab->dst = htonl(bundle->dst.field->nxm_header);
+ nab->dst = htonl(mf_oxm_header(bundle->dst.field->id, 0));
}
slaves = ofpbuf_put_zeros(out, slaves_len);
ovs_be16 src_offset; /* Starting bit offset in source. */
ovs_be16 dst_offset; /* Starting bit offset in destination. */
ovs_be16 oxm_id_len; /* Length of oxm_ids. */
-
- /* OpenFlow allows for experimenter OXM fields whose expression is longer
- * than a standard 32-bit OXM. Thus, in the OpenFlow specification, the
- * following is variable-length. Open vSwitch does not yet support
- * experimenter OXM fields, so until it does we leave these as fixed
- * size. */
- ovs_be32 src; /* OXM for source field. */
- ovs_be32 dst; /* OXM for destination field. */
- uint8_t pad[4]; /* Must be zero. */
+ /* Followed by:
+ * - OXM header for source field.
+ * - OXM header for destination field.
+ * - Padding with 0-bytes to a multiple of 8 bytes.
+ * The "pad" member is the beginning of the above. */
+ uint8_t pad[4];
};
-OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 24);
+OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16);
/* Action structure for NXAST_REG_MOVE.
*
struct ofpbuf *ofpacts)
{
struct ofpact_reg_move *move;
-
- if (oacf->oxm_id_len != htons(8)) {
- /* We only support 4-byte OXM IDs so far. */
- return OFPERR_OFPBAC_BAD_LEN;
- }
+ enum ofperr error;
+ size_t orig_size;
+ struct ofpbuf b;
move = ofpact_put_REG_MOVE(ofpacts);
- move->src.field = mf_from_nxm_header(ntohl(oacf->src));
move->src.ofs = ntohs(oacf->src_offset);
move->src.n_bits = ntohs(oacf->n_bits);
- move->dst.field = mf_from_nxm_header(ntohl(oacf->dst));
move->dst.ofs = ntohs(oacf->dst_offset);
move->dst.n_bits = ntohs(oacf->n_bits);
+ ofpbuf_use_const(&b, oacf, ntohs(oacf->len));
+ ofpbuf_pull(&b, offsetof(struct ofp15_action_copy_field, pad));
+ orig_size = ofpbuf_size(&b);
+ error = nx_pull_header(&b, &move->src.field, NULL);
+ if (error) {
+ return error;
+ }
+ error = nx_pull_header(&b, &move->dst.field, NULL);
+ if (error) {
+ return error;
+ }
+ if (orig_size - ofpbuf_size(&b) != ntohs(oacf->oxm_id_len)) {
+ return OFPERR_OFPBAC_BAD_LEN;
+ }
+
+ if (!is_all_zeros(ofpbuf_data(&b), ofpbuf_size(&b))) {
+ return OFPERR_NXBRC_MUST_BE_ZERO;
+ }
+
return nxm_reg_move_check(move, NULL);
}
{
if (ofp_version >= OFP15_VERSION) {
struct ofp15_action_copy_field *copy;
+ size_t start_ofs = ofpbuf_size(out);
copy = put_OFPAT15_COPY_FIELD(out);
copy->n_bits = htons(move->dst.n_bits);
copy->src_offset = htons(move->src.ofs);
copy->dst_offset = htons(move->dst.ofs);
copy->oxm_id_len = htons(8);
- copy->src = htonl(mf_oxm_header(move->src.field->id, ofp_version));
- copy->dst = htonl(mf_oxm_header(move->dst.field->id, ofp_version));
+ ofpbuf_set_size(out, ofpbuf_size(out) - sizeof copy->pad);
+ nx_put_header(out, move->src.field->id, ofp_version, false);
+ nx_put_header(out, move->dst.field->id, ofp_version, false);
+ pad_ofpat(out, start_ofs);
} else {
struct nx_action_reg_move *narm;
narm->n_bits = htons(move->dst.n_bits);
narm->src_ofs = htons(move->src.ofs);
narm->dst_ofs = htons(move->dst.ofs);
- narm->src = htonl(move->src.field->nxm_header);
- narm->dst = htonl(move->dst.field->nxm_header);
+ narm->src = htonl(mf_oxm_header(move->src.field->id, 0));
+ narm->dst = htonl(mf_oxm_header(move->dst.field->id, 0));
}
}
nxm_format_reg_move(a, s);
}
\f
+/* Action structure for OFPAT12_SET_FIELD. */
+struct ofp12_action_set_field {
+ ovs_be16 type; /* OFPAT12_SET_FIELD. */
+ ovs_be16 len; /* Length is padded to 64 bits. */
+
+ /* Followed by:
+ * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask.
+ * - Enough 0-bytes to pad out to a multiple of 64 bits.
+ *
+ * The "pad" member is the beginning of the above. */
+ uint8_t pad[4];
+};
+OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8);
+
/* Action structure for NXAST_REG_LOAD.
*
* Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits
OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24);
static enum ofperr
-decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl,
- struct ofpbuf *out)
+decode_ofpat_set_field(const struct ofp12_action_set_field *oasf,
+ bool may_mask, struct ofpbuf *ofpacts)
{
- struct ofpact_reg_load *load;
+ struct ofpact_set_field *sf;
+ enum ofperr error;
+ struct ofpbuf b;
- load = ofpact_put_REG_LOAD(out);
- 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);
- load->subvalue.be64[1] = narl->value;
+ sf = ofpact_put_SET_FIELD(ofpacts);
- /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in
- * narl->value. */
- if (load->dst.n_bits < 64 &&
- ntohll(narl->value) >> load->dst.n_bits) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
+ ofpbuf_use_const(&b, oasf, ntohs(oasf->len));
+ ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad));
+ error = nx_pull_entry(&b, &sf->field, &sf->value,
+ may_mask ? &sf->mask : NULL);
+ if (error) {
+ return (error == OFPERR_OFPBMC_BAD_MASK
+ ? OFPERR_OFPBAC_BAD_SET_MASK
+ : error);
+ }
+ if (!may_mask) {
+ memset(&sf->mask, 0xff, sf->field->n_bytes);
}
- return nxm_reg_load_check(load, NULL);
-}
+ if (!is_all_zeros(ofpbuf_data(&b), ofpbuf_size(&b))) {
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
-static void
-encode_REG_LOAD(const struct ofpact_reg_load *load,
- enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out)
-{
- struct nx_action_reg_load *narl;
+ /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via
+ * Set-Field. */
+ if (sf->field->id == MFF_IN_PORT_OXM) {
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
+
+ /* oxm_length is now validated to be compatible with mf_value. */
+ if (!sf->field->writable) {
+ VLOG_WARN_RL(&rl, "destination field %s is not writable",
+ sf->field->name);
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
- narl = put_NXAST_REG_LOAD(out);
- narl->ofs_nbits = nxm_encode_ofs_nbits(load->dst.ofs, load->dst.n_bits);
- narl->dst = htonl(load->dst.field->nxm_header);
- narl->value = load->subvalue.be64[1];
+ /* The value must be valid for match. The OpenFlow 1.5 draft also says,
+ * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be
+ * a 1-bit in oxm_value and in oxm_mask." */
+ if (!mf_is_value_valid(sf->field, &sf->value)
+ || (sf->field->id == MFF_VLAN_VID
+ && (!(sf->mask.be16 & htons(OFPVID12_PRESENT)
+ || !(sf->value.be16 & htons(OFPVID12_PRESENT)))))) {
+ struct ds ds = DS_EMPTY_INITIALIZER;
+ mf_format(sf->field, &sf->value, NULL, &ds);
+ VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s",
+ sf->field->name, ds_cstr(&ds));
+ ds_destroy(&ds);
+
+ return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
+ }
+ return 0;
}
-static char * WARN_UNUSED_RESULT
-parse_REG_LOAD(char *arg, struct ofpbuf *ofpacts,
- enum ofputil_protocol *usable_protocols OVS_UNUSED)
+static enum ofperr
+decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf,
+ struct ofpbuf *ofpacts)
{
- return nxm_parse_reg_load(ofpact_put_REG_LOAD(ofpacts), arg);
+ return decode_ofpat_set_field(oasf, false, ofpacts);
}
-static void
-format_REG_LOAD(const struct ofpact_reg_load *a, struct ds *s)
+static enum ofperr
+decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf,
+ struct ofpbuf *ofpacts)
{
- nxm_format_reg_load(a, s);
+ return decode_ofpat_set_field(oasf, true, ofpacts);
}
-\f
-/* Action structure for OFPAT12_SET_FIELD. */
-struct ofp12_action_set_field {
- ovs_be16 type; /* OFPAT12_SET_FIELD. */
- ovs_be16 len; /* Length is padded to 64 bits. */
- ovs_be32 dst; /* OXM TLV header */
- /* Followed by:
- * - Exactly ((oxm_len + 4) + 7)/8*8 - (oxm_len + 4) (between 0 and 7)
- * bytes of all-zero bytes
- */
-};
-OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8);
static enum ofperr
-decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf,
- struct ofpbuf *ofpacts)
+decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl,
+ struct ofpbuf *out)
{
- 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;
+ struct ofpact_set_field *sf = ofpact_put_reg_load(out);
+ struct mf_subfield dst;
+ enum ofperr error;
- /* 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;
- }
+ sf->ofpact.raw = NXAST_RAW_REG_LOAD;
- if (NXM_HASMASK(oxm_header)) {
- return OFPERR_OFPBAC_BAD_SET_MASK;
- }
- mf = mf_from_nxm_header(oxm_header);
- if (!mf) {
- return OFPERR_OFPBAC_BAD_SET_TYPE;
+ dst.field = mf_from_nxm_header(ntohl(narl->dst));
+ dst.ofs = nxm_decode_ofs(narl->ofs_nbits);
+ dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits);
+ error = mf_check_dst(&dst, NULL);
+ if (error) {
+ return error;
}
- 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;
+
+ /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in
+ * narl->value. */
+ if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) {
+ return OFPERR_OFPBAC_BAD_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);
+ sf->field = dst.field;
+ bitwise_put(ntohll(narl->value),
+ &sf->value, dst.field->n_bytes, dst.ofs,
+ dst.n_bits);
+ bitwise_put(UINT64_MAX,
+ &sf->mask, dst.field->n_bytes, dst.ofs,
+ dst.n_bits);
- return OFPERR_OFPBAC_BAD_SET_ARGUMENT;
- }
return 0;
}
static void
ofpact_put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version,
- enum mf_field_id field, uint64_t value)
+ enum mf_field_id field, uint64_t value_)
{
- const struct mf_field *mf = mf_from_id(field);
- struct ofp12_action_set_field *oasf;
- ovs_be64 n_value;
+ struct ofp12_action_set_field *oasf OVS_UNUSED;
+ int n_bytes = mf_from_id(field)->n_bytes;
+ size_t start_ofs = ofpbuf_size(openflow);
+ union mf_value value;
+
+ value.be64 = htonll(value_ << (8 * (8 - n_bytes)));
oasf = put_OFPAT12_SET_FIELD(openflow);
- oasf->dst = htonl(mf_oxm_header(mf->id, ofp_version));
- oasf->len = htons(sizeof *oasf + 8);
+ ofpbuf_set_size(openflow, ofpbuf_size(openflow) - sizeof oasf->pad);
+ nx_put_entry(openflow, field, ofp_version, &value, NULL);
+ pad_ofpat(openflow, start_ofs);
+}
- ovs_assert(mf->n_bytes <= 8);
- if (mf->n_bytes < 8) {
- value <<= 8 * (8 - mf->n_bytes);
+static bool
+next_load_segment(const struct ofpact_set_field *sf,
+ struct mf_subfield *dst, uint64_t *value)
+{
+ int w = sf->field->n_bytes;
+ int start = dst->ofs + dst->n_bits;
+
+ if (start < 8 * w) {
+ dst->field = sf->field;
+ dst->ofs = bitwise_scan(&sf->mask, w, 1, start, 8 * w);
+ if (dst->ofs < 8 * w) {
+ dst->n_bits = bitwise_scan(&sf->mask, w, 0, dst->ofs + 1,
+ MIN(dst->ofs + 64, 8 * w)) - dst->ofs;
+ *value = bitwise_get(&sf->value, w, dst->ofs, dst->n_bits);
+ return true;
+ }
}
- n_value = htonll(value);
- ofpbuf_put(openflow, &n_value, 8);
+ return false;
}
-/* Convert 'sf' to one or two REG_LOADs. */
+/* Convert 'sf' to a series of 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 = 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 = 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 = 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);
+ struct mf_subfield dst;
+ uint64_t value;
+
+ dst.ofs = dst.n_bits = 0;
+ while (next_load_segment(sf, &dst, &value)) {
+ struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow);
+ narl->ofs_nbits = nxm_encode_ofs_nbits(dst.ofs, dst.n_bits);
+ narl->dst = htonl(mf_oxm_header(dst.field->id, 0));
+ narl->value = htonll(value);
}
}
-/* Convert 'sf' to standard OpenFlow 1.0/1.1 actions, if we can, falling back
- * to Nicira extensions if we must.
+/* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1
+ * actions, if we can, falling back to Nicira extensions if we must.
*
* We check only meta-flow types that can appear within set field actions and
* that have a mapping to compatible action types. These struct mf_field
}
}
+static void
+set_field_to_set_field(const struct ofpact_set_field *sf,
+ enum ofp_version ofp_version, struct ofpbuf *out)
+{
+ struct ofp12_action_set_field *oasf OVS_UNUSED;
+ size_t start_ofs = ofpbuf_size(out);
+
+ oasf = put_OFPAT12_SET_FIELD(out);
+ ofpbuf_set_size(out, ofpbuf_size(out) - sizeof oasf->pad);
+ nx_put_entry(out, sf->field->id, ofp_version, &sf->value, &sf->mask);
+ pad_ofpat(out, start_ofs);
+}
+
static void
encode_SET_FIELD(const struct ofpact_set_field *sf,
enum ofp_version ofp_version, struct ofpbuf *out)
{
- if (ofp_version < OFP12_VERSION) {
+ if (ofp_version >= OFP15_VERSION) {
+ /* OF1.5+ only has Set-Field (we drop NXAST_REG_LOAD entirely). */
+ set_field_to_set_field(sf, ofp_version, out);
+ } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD) {
+ /* It came in as NXAST_REG_LOAD, send it out the same way. */
+ set_field_to_nxast(sf, out);
+ } else if (ofp_version < OFP12_VERSION) {
+ /* OpenFlow 1.0 and 1.1 don't have Set-Field. */
set_field_to_legacy_openflow(sf, ofp_version, out);
+ } else if (is_all_ones((const uint8_t *) &sf->mask, sf->field->n_bytes)) {
+ /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an
+ * entire field, so encode it as OFPAT_SET_FIELD. */
+ set_field_to_set_field(sf, ofp_version, out);
} else {
- uint16_t padded_value_len = ROUND_UP(sf->field->n_bytes, 8);
- struct ofp12_action_set_field *oasf;
- char *value;
-
- oasf = ofpact_put_raw(out, ofp_version, OFPAT_RAW12_SET_FIELD, 0);
- oasf->dst = htonl(mf_oxm_header(sf->field->id, ofp_version));
- oasf->len = htons(sizeof *oasf + padded_value_len);
-
- value = ofpbuf_put_zeros(out, padded_value_len);
- memcpy(value, &sf->value, sf->field->n_bytes);
+ /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be
+ * encoded as OFPAT_SET_FIELD because it does not set an entire field,
+ * so encode it as reg_load. */
+ set_field_to_nxast(sf, out);
}
}
}
sf->field = mf;
delim[0] = '\0';
- error = mf_parse_value(mf, value, &sf->value);
+ error = mf_parse(mf, value, &sf->value, &sf->mask);
if (error) {
return error;
}
return xasprintf("%s is not a valid value for field %s", value, key);
}
- *usable_protocols &= mf->usable_protocols;
+ *usable_protocols &= mf->usable_protocols_exact;
return NULL;
}
return error;
}
+static char * WARN_UNUSED_RESULT
+parse_reg_load(char *arg, struct ofpbuf *ofpacts)
+{
+ struct ofpact_set_field *sf = ofpact_put_reg_load(ofpacts);
+ const char *full_arg = arg;
+ uint64_t value = strtoull(arg, (char **) &arg, 0);
+ struct mf_subfield dst;
+ char *error;
+
+ if (strncmp(arg, "->", 2)) {
+ return xasprintf("%s: missing `->' following value", full_arg);
+ }
+ arg += 2;
+ error = mf_parse_subfield(&dst, arg);
+ if (error) {
+ return error;
+ }
+
+ if (dst.n_bits < 64 && (value >> dst.n_bits) != 0) {
+ return xasprintf("%s: value %"PRIu64" does not fit into %d bits",
+ full_arg, value, dst.n_bits);
+ }
+
+ sf->field = dst.field;
+ memset(&sf->value, 0, sizeof sf->value);
+ bitwise_put(value, &sf->value, dst.field->n_bytes, dst.ofs, dst.n_bits);
+ bitwise_put(UINT64_MAX, &sf->mask,
+ dst.field->n_bytes, dst.ofs, dst.n_bits);
+ return NULL;
+}
+
static void
format_SET_FIELD(const struct ofpact_set_field *a, struct ds *s)
{
- ds_put_format(s, "set_field:");
- mf_format(a->field, &a->value, NULL, s);
- ds_put_format(s, "->%s", a->field->name);
+ if (a->ofpact.raw == NXAST_RAW_REG_LOAD) {
+ struct mf_subfield dst;
+ uint64_t value;
+
+ dst.ofs = dst.n_bits = 0;
+ while (next_load_segment(a, &dst, &value)) {
+ ds_put_format(s, "load:%#"PRIx64"->", value);
+ mf_format_subfield(&dst, s);
+ ds_put_char(s, ',');
+ }
+ ds_chomp(s, ',');
+ } else {
+ ds_put_cstr(s, "set_field:");
+ mf_format(a->field, &a->value, &a->mask, s);
+ ds_put_format(s, "->%s", a->field->name);
+ }
+}
+
+/* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact
+ * is marked such that, if possible, it will be translated to OpenFlow as
+ * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because
+ * that was the way that the action was expressed when it came into OVS or for
+ * backward compatibility. */
+struct ofpact_set_field *
+ofpact_put_reg_load(struct ofpbuf *ofpacts)
+{
+ struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts);
+ sf->ofpact.raw = NXAST_RAW_REG_LOAD;
+ return sf;
}
\f
/* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP.
{
nasp->offset = htons(stack_action->subfield.ofs);
nasp->n_bits = htons(stack_action->subfield.n_bits);
- nasp->field = htonl(stack_action->subfield.field->nxm_header);
+ nasp->field = htonl(mf_oxm_header(stack_action->subfield.field->id, 0));
}
static void
put_u16(out, spec->n_bits | spec->dst_type | spec->src_type);
if (spec->src_type == NX_LEARN_SRC_FIELD) {
- put_u32(out, spec->src.field->nxm_header);
+ put_u32(out, mf_oxm_header(spec->src.field->id, 0));
put_u16(out, spec->src.ofs);
} else {
size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16);
if (spec->dst_type == NX_LEARN_DST_MATCH ||
spec->dst_type == NX_LEARN_DST_LOAD) {
- put_u32(out, spec->dst.field->nxm_header);
+ put_u32(out, mf_oxm_header(spec->dst.field->id, 0));
put_u16(out, spec->dst.ofs);
}
}
- if ((ofpbuf_size(out) - start_ofs) % 8) {
- ofpbuf_put_zeros(out, 8 - (ofpbuf_size(out) - start_ofs) % 8);
- }
-
- nal = ofpbuf_at_assert(out, start_ofs, sizeof *nal);
- nal->len = htons(ofpbuf_size(out) - start_ofs);
+ pad_ofpat(out, start_ofs);
}
static char * WARN_UNUSED_RESULT
nam->max_link = htons(mp->max_link);
nam->arg = htonl(mp->arg);
nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits);
- nam->dst = htonl(mp->dst.field->nxm_header);
+ nam->dst = htonl(mf_oxm_header(mp->dst.field->id, 0));
}
static char * WARN_UNUSED_RESULT
{
switch (a->type) {
case OFPACT_SET_FIELD:
- case OFPACT_REG_LOAD:
case OFPACT_REG_MOVE:
case OFPACT_SET_ETH_DST:
case OFPACT_SET_ETH_SRC:
case OFPACT_POP_MPLS:
case OFPACT_PUSH_MPLS:
case OFPACT_PUSH_VLAN:
- case OFPACT_REG_LOAD:
case OFPACT_REG_MOVE:
case OFPACT_SET_FIELD:
case OFPACT_SET_ETH_DST:
* all the actions because there's no point in modifying a packet that will
* not be sent anywhere. */
if (!ofpacts_copy_last(action_list, action_set, OFPACT_GROUP) &&
- !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT)) {
+ !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT) &&
+ !ofpacts_copy_last(action_list, action_set, OFPACT_RESUBMIT)) {
ofpbuf_clear(action_list);
}
}
case OFPACT_SET_L4_SRC_PORT:
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_REG_MOVE:
return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow);
- 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. */
uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id;
if ((table_id != 255 && goto_table <= table_id)
|| (n_tables != 255 && goto_table >= n_tables)) {
- return OFPERR_OFPBRC_BAD_TABLE_ID;
+ return OFPERR_OFPBIC_BAD_TABLE_ID;
}
return 0;
}
switch (a->type) {
#define OFPACT(ENUM, STRUCT, MEMBER, NAME) \
case OFPACT_##ENUM: \
- return encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out);
+ encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \
+ return;
OFPACTS
#undef OFPACT
default:
case OFPACT_SET_L4_SRC_PORT:
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:
} else if (!strcasecmp(key, "set_tunnel64")) {
error = parse_set_tunnel(value, ofpacts,
NXAST_RAW_SET_TUNNEL64);
+ } else if (!strcasecmp(key, "load")) {
+ error = parse_reg_load(value, ofpacts);
} else if (!strcasecmp(key, "bundle_load")) {
error = parse_bundle_load(value, ofpacts);
} else if (!strcasecmp(key, "drop")) {
return oah;
}
+
+static void
+pad_ofpat(struct ofpbuf *openflow, size_t start_ofs)
+{
+ struct ofp_action_header *oah;
+
+ ofpbuf_put_zeros(openflow, PAD_SIZE(ofpbuf_size(openflow) - start_ofs, 8));
+
+ oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah);
+ oah->len = htons(ofpbuf_size(openflow) - start_ofs);
+}
+
projects / cascardo / ovs.git / blobdiff