/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
/* Converting OpenFlow 1.0 to ofpacts. */
static enum ofperr
-output_from_openflow10(const struct ofp_action_output *oao,
+output_from_openflow10(const struct ofp10_action_output *oao,
struct ofpbuf *out)
{
struct ofpact_output *output;
memcpy(note->data, nan->note, length);
}
+static enum ofperr
+dec_ttl_from_openflow(struct ofpbuf *out)
+{
+ uint16_t id = 0;
+ struct ofpact_cnt_ids *ids;
+ enum ofperr error = 0;
+
+ ids = ofpact_put_DEC_TTL(out);
+ ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL;
+ ids->n_controllers = 1;
+ ofpbuf_put(out, &id, sizeof id);
+ ids = out->l2;
+ ofpact_update_len(out, &ids->ofpact);
+ return error;
+}
+
+static enum ofperr
+dec_ttl_cnt_ids_from_openflow(const struct nx_action_cnt_ids *nac_ids,
+ struct ofpbuf *out)
+{
+ struct ofpact_cnt_ids *ids;
+ size_t ids_size;
+ int i;
+
+ ids = ofpact_put_DEC_TTL(out);
+ ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS;
+ ids->n_controllers = ntohs(nac_ids->n_controllers);
+ ids_size = ntohs(nac_ids->len) - sizeof *nac_ids;
+
+ if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) {
+ return OFPERR_NXBRC_MUST_BE_ZERO;
+ }
+
+ if (ids_size < ids->n_controllers * sizeof(ovs_be16)) {
+ VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %zu bytes "
+ "allocated for controller ids. %zu bytes are required for "
+ "%"PRIu16" controllers.", ids_size,
+ ids->n_controllers * sizeof(ovs_be16), ids->n_controllers);
+ return OFPERR_OFPBAC_BAD_LEN;
+ }
+
+ for (i = 0; i < ids->n_controllers; i++) {
+ uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]);
+ ofpbuf_put(out, &id, sizeof id);
+ }
+
+ ids = out->l2;
+ ofpact_update_len(out, &ids->ofpact);
+
+ return 0;
+}
+
static enum ofperr
decode_nxast_action(const union ofp_action *a, enum ofputil_action_code *code)
{
}
static enum ofperr
-ofpact_from_openflow10__(const union ofp_action *a, struct ofpbuf *out)
+ofpact_from_nxast(const union ofp_action *a, enum ofputil_action_code code,
+ struct ofpbuf *out)
{
const struct nx_action_resubmit *nar;
const struct nx_action_set_tunnel *nast;
const struct nx_action_note *nan;
const struct nx_action_set_tunnel64 *nast64;
struct ofpact_tunnel *tunnel;
- enum ofputil_action_code code;
- enum ofperr error;
-
- error = decode_openflow10_action(a, &code);
- if (error) {
- return error;
- }
+ enum ofperr error = 0;
switch (code) {
case OFPUTIL_ACTION_INVALID:
+#define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#define OFPAT11_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#define OFPAT12_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#include "ofp-util.def"
NOT_REACHED();
- case OFPUTIL_OFPAT10_OUTPUT:
- return output_from_openflow10((const struct ofp_action_output *) a,
- out);
-
- case OFPUTIL_OFPAT10_SET_VLAN_VID:
- if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
- ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
- break;
-
- case OFPUTIL_OFPAT10_SET_VLAN_PCP:
- if (a->vlan_pcp.vlan_pcp & ~7) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
- ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
- break;
-
- case OFPUTIL_OFPAT10_STRIP_VLAN:
- ofpact_put_STRIP_VLAN(out);
- break;
-
- case OFPUTIL_OFPAT10_SET_DL_SRC:
- memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
- ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
- break;
-
- case OFPUTIL_OFPAT10_SET_DL_DST:
- memcpy(ofpact_put_SET_ETH_DST(out)->mac,
- ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
- break;
-
- case OFPUTIL_OFPAT10_SET_NW_SRC:
- ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
- break;
-
- case OFPUTIL_OFPAT10_SET_NW_DST:
- ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
- break;
-
- case OFPUTIL_OFPAT10_SET_NW_TOS:
- if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
- ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
- break;
-
- case OFPUTIL_OFPAT10_SET_TP_SRC:
- ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
- break;
-
- case OFPUTIL_OFPAT10_SET_TP_DST:
- ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
-
- break;
-
- case OFPUTIL_OFPAT10_ENQUEUE:
- error = enqueue_from_openflow10((const struct ofp_action_enqueue *) a,
- out);
- break;
-
case OFPUTIL_NXAST_RESUBMIT:
resubmit_from_openflow((const struct nx_action_resubmit *) a, out);
break;
ofpact_put_MULTIPATH(out));
break;
- case OFPUTIL_NXAST_AUTOPATH:
+ case OFPUTIL_NXAST_AUTOPATH__DEPRECATED:
error = autopath_from_openflow((const struct nx_action_autopath *) a,
ofpact_put_AUTOPATH(out));
break;
break;
case OFPUTIL_NXAST_DEC_TTL:
- ofpact_put_DEC_TTL(out);
+ error = dec_ttl_from_openflow(out);
+ break;
+
+ case OFPUTIL_NXAST_DEC_TTL_CNT_IDS:
+ error = dec_ttl_cnt_ids_from_openflow(
+ (const struct nx_action_cnt_ids *) a, out);
break;
case OFPUTIL_NXAST_FIN_TIMEOUT:
return error;
}
+static enum ofperr
+ofpact_from_openflow10(const union ofp_action *a, struct ofpbuf *out)
+{
+ enum ofputil_action_code code;
+ enum ofperr error;
+
+ error = decode_openflow10_action(a, &code);
+ if (error) {
+ return error;
+ }
+
+ switch (code) {
+ case OFPUTIL_ACTION_INVALID:
+#define OFPAT11_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#define OFPAT12_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#include "ofp-util.def"
+ NOT_REACHED();
+
+ case OFPUTIL_OFPAT10_OUTPUT:
+ return output_from_openflow10(&a->output10, out);
+
+ case OFPUTIL_OFPAT10_SET_VLAN_VID:
+ if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
+ break;
+
+ case OFPUTIL_OFPAT10_SET_VLAN_PCP:
+ if (a->vlan_pcp.vlan_pcp & ~7) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
+ break;
+
+ case OFPUTIL_OFPAT10_STRIP_VLAN:
+ ofpact_put_STRIP_VLAN(out);
+ break;
+
+ case OFPUTIL_OFPAT10_SET_DL_SRC:
+ memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
+ ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPUTIL_OFPAT10_SET_DL_DST:
+ memcpy(ofpact_put_SET_ETH_DST(out)->mac,
+ ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPUTIL_OFPAT10_SET_NW_SRC:
+ ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
+ break;
+
+ case OFPUTIL_OFPAT10_SET_NW_DST:
+ ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
+ break;
+
+ case OFPUTIL_OFPAT10_SET_NW_TOS:
+ if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
+ break;
+
+ case OFPUTIL_OFPAT10_SET_TP_SRC:
+ ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
+ break;
+
+ case OFPUTIL_OFPAT10_SET_TP_DST:
+ ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
+
+ break;
+
+ case OFPUTIL_OFPAT10_ENQUEUE:
+ error = enqueue_from_openflow10((const struct ofp_action_enqueue *) a,
+ out);
+ break;
+
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
+#include "ofp-util.def"
+ return ofpact_from_nxast(a, code, out);
+ }
+
+ return error;
+}
+
static inline union ofp_action *
action_next(const union ofp_action *a)
{
((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \
(ITER) = action_next(ITER)))
+static void
+log_bad_action(const union ofp_action *actions, size_t n_actions, size_t ofs,
+ enum ofperr error)
+{
+ if (!VLOG_DROP_WARN(&rl)) {
+ struct ds s;
+
+ ds_init(&s);
+ ds_put_hex_dump(&s, actions, n_actions * sizeof *actions, 0, false);
+ VLOG_WARN("bad action at offset %#zx (%s):\n%s",
+ ofs * sizeof *actions, ofperr_get_name(error), ds_cstr(&s));
+ ds_destroy(&s);
+ }
+}
+
static enum ofperr
-ofpact_from_openflow10(const union ofp_action *in, size_t n_in,
- struct ofpbuf *out)
+ofpacts_from_openflow(const union ofp_action *in, size_t n_in,
+ struct ofpbuf *out,
+ enum ofperr (*ofpact_from_openflow)(
+ const union ofp_action *a, struct ofpbuf *out))
{
const union ofp_action *a;
size_t left;
ACTION_FOR_EACH (a, left, in, n_in) {
- enum ofperr error = ofpact_from_openflow10__(a, out);
+ enum ofperr error = ofpact_from_openflow(a, out);
if (error) {
- VLOG_WARN_RL(&rl, "bad action at offset %td (%s)",
- (a - in) * sizeof *a, ofperr_get_name(error));
+ log_bad_action(in, n_in, a - in, error);
return error;
}
}
if (left) {
- VLOG_WARN_RL(&rl, "bad action format at offset %zu",
- (n_in - left) * sizeof *a);
- return OFPERR_OFPBAC_BAD_LEN;
+ enum ofperr error = OFPERR_OFPBAC_BAD_LEN;
+ log_bad_action(in, n_in, n_in - left, error);
+ return error;
}
ofpact_pad(out);
return 0;
}
-/* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front
- * of 'openflow' into ofpacts. On success, replaces any existing content in
- * 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. Returns 0
- * if successful, otherwise an OpenFlow error.
- *
- * This function does not check that the actions are valid in a given context.
- * The caller should do so, with ofpacts_check(). */
-enum ofperr
-ofpacts_pull_openflow(struct ofpbuf *openflow, unsigned int actions_len,
- struct ofpbuf *ofpacts)
+static enum ofperr
+ofpacts_from_openflow10(const union ofp_action *in, size_t n_in,
+ struct ofpbuf *out)
+{
+ return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow10);
+}
+
+static enum ofperr
+ofpacts_pull_actions(struct ofpbuf *openflow, unsigned int actions_len,
+ struct ofpbuf *ofpacts,
+ enum ofperr (*translate)(const union ofp_action *actions,
+ size_t n_actions,
+ struct ofpbuf *ofpacts))
{
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
const union ofp_action *actions;
return OFPERR_OFPBRC_BAD_LEN;
}
- error = ofpact_from_openflow10(actions, actions_len / OFP_ACTION_ALIGN,
- ofpacts);
+ error = translate(actions, actions_len / OFP_ACTION_ALIGN, ofpacts);
if (error) {
ofpbuf_clear(ofpacts);
}
+ return error;
+}
+
+/* Attempts to convert 'actions_len' bytes of OpenFlow 1.0 actions from the
+ * front of 'openflow' into ofpacts. On success, replaces any existing content
+ * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'.
+ * Returns 0 if successful, otherwise an OpenFlow error.
+ *
+ * The parsed actions are valid generically, but they may not be valid in a
+ * specific context. For example, port numbers up to OFPP_MAX are valid
+ * generically, but specific datapaths may only support port numbers in a
+ * smaller range. Use ofpacts_check() to additional check whether actions are
+ * valid in a specific context. */
+enum ofperr
+ofpacts_pull_openflow10(struct ofpbuf *openflow, unsigned int actions_len,
+ struct ofpbuf *ofpacts)
+{
+ return ofpacts_pull_actions(openflow, actions_len, ofpacts,
+ ofpacts_from_openflow10);
+}
+\f
+/* OpenFlow 1.1 actions. */
+
+/* Parses 'a' to determine its type. On success stores the correct type into
+ * '*code' and returns 0. On failure returns an OFPERR_* error code and
+ * '*code' is indeterminate.
+ *
+ * The caller must have already verified that 'a''s length is potentially
+ * correct (that is, a->header.len is nonzero and a multiple of sizeof(union
+ * ofp_action) and no longer than the amount of space allocated to 'a').
+ *
+ * This function verifies that 'a''s length is correct for the type of action
+ * that it represents. */
+static enum ofperr
+decode_openflow11_action(const union ofp_action *a,
+ enum ofputil_action_code *code)
+{
+ switch (a->type) {
+ case CONSTANT_HTONS(OFPAT11_EXPERIMENTER):
+ return decode_nxast_action(a, code);
+
+#define OFPAT11_ACTION(ENUM, STRUCT, NAME) \
+ case CONSTANT_HTONS(ENUM): \
+ if (a->header.len == htons(sizeof(struct STRUCT))) { \
+ *code = OFPUTIL_##ENUM; \
+ return 0; \
+ } else { \
+ return OFPERR_OFPBAC_BAD_LEN; \
+ } \
+ break;
+#include "ofp-util.def"
+
+ default:
+ return OFPERR_OFPBAC_BAD_TYPE;
+ }
+}
+
+static enum ofperr
+output_from_openflow11(const struct ofp11_action_output *oao,
+ struct ofpbuf *out)
+{
+ struct ofpact_output *output;
+ enum ofperr error;
+
+ output = ofpact_put_OUTPUT(out);
+ output->max_len = ntohs(oao->max_len);
+
+ error = ofputil_port_from_ofp11(oao->port, &output->port);
+ if (error) {
+ return error;
+ }
+
+ return ofputil_check_output_port(output->port, OFPP_MAX);
+}
+
+static enum ofperr
+ofpact_from_openflow11(const union ofp_action *a, struct ofpbuf *out)
+{
+ enum ofputil_action_code code;
+ enum ofperr error;
+
+ error = decode_openflow11_action(a, &code);
+ if (error) {
+ return error;
+ }
+
+ switch (code) {
+ case OFPUTIL_ACTION_INVALID:
+#define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#define OFPAT12_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
+#include "ofp-util.def"
+ NOT_REACHED();
+
+ case OFPUTIL_OFPAT11_OUTPUT:
+ return output_from_openflow11((const struct ofp11_action_output *) a,
+ out);
+
+ case OFPUTIL_OFPAT11_SET_VLAN_VID:
+ if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
+ break;
+
+ case OFPUTIL_OFPAT11_SET_VLAN_PCP:
+ if (a->vlan_pcp.vlan_pcp & ~7) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
+ break;
+
+ case OFPUTIL_OFPAT11_SET_DL_SRC:
+ memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
+ ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPUTIL_OFPAT11_SET_DL_DST:
+ memcpy(ofpact_put_SET_ETH_DST(out)->mac,
+ ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPUTIL_OFPAT11_SET_NW_SRC:
+ ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
+ break;
+
+ case OFPUTIL_OFPAT11_SET_NW_DST:
+ ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
+ break;
+
+ case OFPUTIL_OFPAT11_SET_NW_TOS:
+ if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
+ return OFPERR_OFPBAC_BAD_ARGUMENT;
+ }
+ ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
+ break;
+
+ case OFPUTIL_OFPAT11_SET_TP_SRC:
+ ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
+ break;
+
+ case OFPUTIL_OFPAT11_SET_TP_DST:
+ ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
+ break;
+
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
+#include "ofp-util.def"
+ return ofpact_from_nxast(a, code, out);
+ }
+
+ return error;
+}
+
+static enum ofperr
+ofpacts_from_openflow11(const union ofp_action *in, size_t n_in,
+ struct ofpbuf *out)
+{
+ return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow11);
+}
+\f
+/* OpenFlow 1.1 instructions. */
+
+#define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \
+ static inline const struct STRUCT * \
+ instruction_get_##ENUM(const struct ofp11_instruction *inst)\
+ { \
+ assert(inst->type == htons(ENUM)); \
+ return (struct STRUCT *)inst; \
+ } \
+ \
+ static inline void \
+ instruction_init_##ENUM(struct STRUCT *s) \
+ { \
+ memset(s, 0, sizeof *s); \
+ s->type = htons(ENUM); \
+ s->len = htons(sizeof *s); \
+ } \
+ \
+ static inline struct STRUCT * \
+ instruction_put_##ENUM(struct ofpbuf *buf) \
+ { \
+ struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
+ instruction_init_##ENUM(s); \
+ return s; \
+ }
+OVS_INSTRUCTIONS
+#undef DEFINE_INST
+
+struct instruction_type_info {
+ enum ovs_instruction_type type;
+ const char *name;
+};
+
+static const struct instruction_type_info inst_info[] = {
+#define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME},
+OVS_INSTRUCTIONS
+#undef DEFINE_INST
+};
+
+const char *
+ofpact_instruction_name_from_type(enum ovs_instruction_type type)
+{
+ return inst_info[type].name;
+}
+
+int
+ofpact_instruction_type_from_name(const char *name)
+{
+ const struct instruction_type_info *p;
+ for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) {
+ if (!strcasecmp(name, p->name)) {
+ return p->type;
+ }
+ }
+ return -1;
+}
+
+static inline struct ofp11_instruction *
+instruction_next(const struct ofp11_instruction *inst)
+{
+ return ((struct ofp11_instruction *) (void *)
+ ((uint8_t *) inst + ntohs(inst->len)));
+}
+
+static inline bool
+instruction_is_valid(const struct ofp11_instruction *inst,
+ size_t n_instructions)
+{
+ uint16_t len = ntohs(inst->len);
+ return (!(len % OFP11_INSTRUCTION_ALIGN)
+ && len >= sizeof *inst
+ && len / sizeof *inst <= n_instructions);
+}
+
+/* This macro is careful to check for instructions with bad lengths. */
+#define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \
+ for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \
+ (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \
+ ((LEFT) -= (ntohs((ITER)->len) \
+ / sizeof(struct ofp11_instruction)), \
+ (ITER) = instruction_next(ITER)))
+
+static enum ofperr
+decode_openflow11_instruction(const struct ofp11_instruction *inst,
+ enum ovs_instruction_type *type)
+{
+ uint16_t len = ntohs(inst->len);
+
+ switch (inst->type) {
+ case CONSTANT_HTONS(OFPIT11_EXPERIMENTER):
+ return OFPERR_OFPBIC_BAD_EXPERIMENTER;
+
+#define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \
+ case CONSTANT_HTONS(ENUM): \
+ if (EXTENSIBLE \
+ ? len >= sizeof(struct STRUCT) \
+ : len == sizeof(struct STRUCT)) { \
+ *type = OVSINST_##ENUM; \
+ return 0; \
+ } else { \
+ return OFPERR_OFPBIC_BAD_LEN; \
+ }
+OVS_INSTRUCTIONS
+#undef DEFINE_INST
+
+ default:
+ return OFPERR_OFPBIC_UNKNOWN_INST;
+ }
+}
+
+static enum ofperr
+decode_openflow11_instructions(const struct ofp11_instruction insts[],
+ size_t n_insts,
+ const struct ofp11_instruction *out[])
+{
+ const struct ofp11_instruction *inst;
+ size_t left;
+
+ memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out);
+ INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) {
+ enum ovs_instruction_type type;
+ enum ofperr error;
+
+ error = decode_openflow11_instruction(inst, &type);
+ if (error) {
+ return error;
+ }
+
+ if (out[type]) {
+ return OFPERR_OFPIT_BAD_INSTRUCTION;
+ }
+ out[type] = inst;
+ }
+
+ if (left) {
+ VLOG_WARN_RL(&rl, "bad instruction format at offset %zu",
+ (n_insts - left) * sizeof *inst);
+ return OFPERR_OFPBIC_BAD_LEN;
+ }
return 0;
}
+
+static void
+get_actions_from_instruction(const struct ofp11_instruction *inst,
+ const union ofp_action **actions,
+ size_t *n_actions)
+{
+ *actions = (const union ofp_action *) (inst + 1);
+ *n_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN;
+}
+
+/* Attempts to convert 'actions_len' bytes of OpenFlow 1.1 actions from the
+ * front of 'openflow' into ofpacts. On success, replaces any existing content
+ * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'.
+ * Returns 0 if successful, otherwise an OpenFlow error.
+ *
+ * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in
+ * instructions, so you should call ofpacts_pull_openflow11_instructions()
+ * instead of this function.
+ *
+ * The parsed actions are valid generically, but they may not be valid in a
+ * specific context. For example, port numbers up to OFPP_MAX are valid
+ * generically, but specific datapaths may only support port numbers in a
+ * smaller range. Use ofpacts_check() to additional check whether actions are
+ * valid in a specific context. */
+enum ofperr
+ofpacts_pull_openflow11_actions(struct ofpbuf *openflow,
+ unsigned int actions_len,
+ struct ofpbuf *ofpacts)
+{
+ return ofpacts_pull_actions(openflow, actions_len, ofpacts,
+ ofpacts_from_openflow11);
+}
+
+enum ofperr
+ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow,
+ unsigned int instructions_len,
+ struct ofpbuf *ofpacts)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ const struct ofp11_instruction *instructions;
+ const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS];
+ enum ofperr error;
+
+ ofpbuf_clear(ofpacts);
+
+ if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) {
+ VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a "
+ "multiple of %d",
+ instructions_len, OFP11_INSTRUCTION_ALIGN);
+ error = OFPERR_OFPBIC_BAD_LEN;
+ goto exit;
+ }
+
+ instructions = ofpbuf_try_pull(openflow, instructions_len);
+ if (instructions == NULL) {
+ VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds "
+ "remaining message length (%zu)",
+ instructions_len, openflow->size);
+ error = OFPERR_OFPBIC_BAD_LEN;
+ goto exit;
+ }
+
+ error = decode_openflow11_instructions(
+ instructions, instructions_len / OFP11_INSTRUCTION_ALIGN,
+ insts);
+ if (error) {
+ goto exit;
+ }
+
+ if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) {
+ const union ofp_action *actions;
+ size_t n_actions;
+
+ get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS],
+ &actions, &n_actions);
+ error = ofpacts_from_openflow11(actions, n_actions, ofpacts);
+ if (error) {
+ goto exit;
+ }
+ }
+
+ if (insts[OVSINST_OFPIT11_GOTO_TABLE] ||
+ insts[OVSINST_OFPIT11_WRITE_METADATA] ||
+ insts[OVSINST_OFPIT11_WRITE_ACTIONS] ||
+ insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) {
+ error = OFPERR_OFPBIC_UNSUP_INST;
+ goto exit;
+ }
+
+exit:
+ if (error) {
+ ofpbuf_clear(ofpacts);
+ }
+ return error;
+}
\f
static enum ofperr
ofpact_check__(const struct ofpact *a, const struct flow *flow, int max_ports)
nac->reason = oc->reason;
}
+static void
+ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids,
+ struct ofpbuf *out)
+{
+ if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) {
+ ofputil_put_NXAST_DEC_TTL(out);
+ } else {
+ struct nx_action_cnt_ids *nac_ids =
+ ofputil_put_NXAST_DEC_TTL_CNT_IDS(out);
+ int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN);
+ ovs_be16 *ids;
+ size_t i;
+
+ nac_ids->len = htons(ntohs(nac_ids->len) + ids_len);
+ nac_ids->n_controllers = htons(oc_ids->n_controllers);
+
+ ids = ofpbuf_put_zeros(out, ids_len);
+ for (i = 0; i < oc_ids->n_controllers; i++) {
+ ids[i] = htons(oc_ids->cnt_ids[i]);
+ }
+ }
+}
+
static void
ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout,
struct ofpbuf *out)
break;
case OFPACT_DEC_TTL:
- ofputil_put_NXAST_DEC_TTL(out);
+ ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out);
break;
case OFPACT_SET_TUNNEL:
ofpact_output_to_openflow10(const struct ofpact_output *output,
struct ofpbuf *out)
{
- struct ofp_action_output *oao;
+ struct ofp10_action_output *oao;
oao = ofputil_put_OFPAT10_OUTPUT(out);
oao->port = htons(output->port);
}
}
-/* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow
+/* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow 1.0
* actions in 'openflow', appending the actions to any existing data in
* 'openflow'. */
void
-ofpacts_to_openflow(const struct ofpact ofpacts[], size_t ofpacts_len,
- struct ofpbuf *openflow)
+ofpacts_put_openflow10(const struct ofpact ofpacts[], size_t ofpacts_len,
+ struct ofpbuf *openflow)
{
const struct ofpact *a;
}
}
\f
+/* Converting ofpacts to OpenFlow 1.1. */
+
+static void
+ofpact_output_to_openflow11(const struct ofpact_output *output,
+ struct ofpbuf *out)
+{
+ struct ofp11_action_output *oao;
+
+ oao = ofputil_put_OFPAT11_OUTPUT(out);
+ oao->port = ofputil_port_to_ofp11(output->port);
+ oao->max_len = htons(output->max_len);
+}
+
+static void
+ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out)
+{
+ switch (a->type) {
+ case OFPACT_OUTPUT:
+ return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out);
+
+ case OFPACT_ENQUEUE:
+ /* XXX */
+ break;
+
+ case OFPACT_SET_VLAN_VID:
+ ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid
+ = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid);
+ break;
+
+ case OFPACT_SET_VLAN_PCP:
+ ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp
+ = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp;
+ break;
+
+ case OFPACT_STRIP_VLAN:
+ /* XXX */
+ break;
+
+ case OFPACT_SET_ETH_SRC:
+ memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr,
+ ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN);
+ break;
+
+ case OFPACT_SET_ETH_DST:
+ memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr,
+ ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN);
+ break;
+
+ case OFPACT_SET_IPV4_SRC:
+ ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr
+ = ofpact_get_SET_IPV4_SRC(a)->ipv4;
+ break;
+
+ case OFPACT_SET_IPV4_DST:
+ ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr
+ = ofpact_get_SET_IPV4_DST(a)->ipv4;
+ break;
+
+ case OFPACT_SET_IPV4_DSCP:
+ ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos
+ = ofpact_get_SET_IPV4_DSCP(a)->dscp;
+ break;
+
+ case OFPACT_SET_L4_SRC_PORT:
+ ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port
+ = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
+ break;
+
+ case OFPACT_SET_L4_DST_PORT:
+ ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port
+ = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
+ break;
+
+ case OFPACT_CONTROLLER:
+ case OFPACT_OUTPUT_REG:
+ case OFPACT_BUNDLE:
+ case OFPACT_REG_MOVE:
+ case OFPACT_REG_LOAD:
+ case OFPACT_DEC_TTL:
+ case OFPACT_SET_TUNNEL:
+ case OFPACT_SET_QUEUE:
+ case OFPACT_POP_QUEUE:
+ case OFPACT_FIN_TIMEOUT:
+ case OFPACT_RESUBMIT:
+ case OFPACT_LEARN:
+ case OFPACT_MULTIPATH:
+ case OFPACT_AUTOPATH:
+ case OFPACT_NOTE:
+ case OFPACT_EXIT:
+ ofpact_to_nxast(a, out);
+ break;
+ }
+}
+
+/* Converts the ofpacts in 'ofpacts' (terminated by OFPACT_END) into OpenFlow
+ * 1.1 actions in 'openflow', appending the actions to any existing data in
+ * 'openflow'. */
+size_t
+ofpacts_put_openflow11_actions(const struct ofpact ofpacts[],
+ size_t ofpacts_len, struct ofpbuf *openflow)
+{
+ const struct ofpact *a;
+ size_t start_size = openflow->size;
+
+ OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
+ ofpact_to_openflow11(a, openflow);
+ }
+
+ return openflow->size - start_size;
+}
+
+void
+ofpacts_put_openflow11_instructions(const struct ofpact ofpacts[],
+ size_t ofpacts_len,
+ struct ofpbuf *openflow)
+{
+ struct ofp11_instruction_actions *oia;
+ size_t ofs;
+
+ /* Put an OFPIT11_APPLY_ACTIONS instruction and fill it in. */
+ ofs = openflow->size;
+ instruction_put_OFPIT11_APPLY_ACTIONS(openflow);
+ ofpacts_put_openflow11_actions(ofpacts, ofpacts_len, openflow);
+
+ /* Update the instruction's length (or, if it's empty, delete it). */
+ oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia);
+ if (openflow->size > ofs + sizeof *oia) {
+ oia->len = htons(openflow->size - ofs);
+ } else {
+ openflow->size = ofs;
+ }
+}
+\f
/* Returns true if 'action' outputs to 'port', false otherwise. */
static bool
ofpact_outputs_to_port(const struct ofpact *ofpact, uint16_t port)
}
}
+static void
+print_dec_ttl(const struct ofpact_cnt_ids *ids,
+ struct ds *s)
+{
+ size_t i;
+
+ ds_put_cstr(s, "dec_ttl");
+ if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) {
+ ds_put_cstr(s, "(");
+ for (i = 0; i < ids->n_controllers; i++) {
+ if (i) {
+ ds_put_cstr(s, ",");
+ }
+ ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]);
+ }
+ ds_put_cstr(s, ")");
+ }
+}
+
static void
print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout,
struct ds *s)
break;
case OFPACT_DEC_TTL:
- ds_put_cstr(s, "dec_ttl");
+ print_dec_ttl(ofpact_get_DEC_TTL(a), s);
break;
case OFPACT_SET_TUNNEL:
case OFPACT_RESUBMIT:
resubmit = ofpact_get_RESUBMIT(a);
if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) {
- ds_put_format(s, "resubmit:%"PRIu16, resubmit->in_port);
+ ds_put_cstr(s, "resubmit:");
+ ofputil_format_port(resubmit->in_port, s);
} else {
ds_put_format(s, "resubmit(");
if (resubmit->in_port != OFPP_IN_PORT) {
case OFPACT_AUTOPATH:
autopath = ofpact_get_AUTOPATH(a);
- ds_put_format(s, "autopath(%u,", autopath->port);
+ ds_put_cstr(s, "autopath(");
+ ofputil_format_port(autopath->port, s);
+ ds_put_char(s, ',');
mf_format_subfield(&autopath->dst, s);
ds_put_char(s, ')');
break;
git://git.onelab.eu / sliver-openvswitch.git / blobdiff