#include "ofp-print.h"
#include <errno.h>
#include <inttypes.h>
+#include <sys/types.h>
+#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <stdlib.h>
#include "autopath.h"
+#include "bundle.h"
#include "byte-order.h"
#include "classifier.h"
#include "dynamic-string.h"
+#include "learn.h"
#include "multipath.h"
#include "nx-match.h"
#include "ofp-errors.h"
}
/* Given the IP netmask 'netmask', returns the number of bits of the IP address
- * that it wildcards. 'netmask' must be a CIDR netmask (see ip_is_cidr()). */
+ * that it wildcards, that is, the number of 0-bits in 'netmask'. 'netmask'
+ * must be a CIDR netmask (see ip_is_cidr()). */
int
ofputil_netmask_to_wcbits(ovs_be32 netmask)
{
- assert(ip_is_cidr(netmask));
-#if __GNUC__ >= 4
- return netmask == htonl(0) ? 32 : __builtin_ctz(ntohl(netmask));
-#else
- int wcbits;
-
- for (wcbits = 32; netmask; wcbits--) {
- netmask &= netmask - 1;
- }
-
- return wcbits;
-#endif
+ return 32 - ip_count_cidr_bits(netmask);
}
/* A list of the FWW_* and OFPFW_ bits that have the same value, meaning, and
void
ofputil_wildcard_from_openflow(uint32_t ofpfw, struct flow_wildcards *wc)
{
+ BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7);
+
/* Initialize most of rule->wc. */
flow_wildcards_init_catchall(wc);
wc->wildcards = (OVS_FORCE flow_wildcards_t) ofpfw & WC_INVARIANTS;
/* Wildcard fields that aren't defined by ofp_match or tun_id. */
- wc->wildcards |= (FWW_ARP_SHA | FWW_ARP_THA | FWW_ND_TARGET);
+ wc->wildcards |= (FWW_ARP_SHA | FWW_ARP_THA | FWW_NW_ECN | FWW_NW_TTL
+ | FWW_ND_TARGET | FWW_IPV6_LABEL);
if (ofpfw & OFPFW_NW_TOS) {
- wc->wildcards |= FWW_NW_TOS;
+ /* OpenFlow 1.0 defines a TOS wildcard, but it's much later in
+ * the enum than we can use. */
+ wc->wildcards |= FWW_NW_DSCP;
}
+
wc->nw_src_mask = ofputil_wcbits_to_netmask(ofpfw >> OFPFW_NW_SRC_SHIFT);
wc->nw_dst_mask = ofputil_wcbits_to_netmask(ofpfw >> OFPFW_NW_DST_SHIFT);
rule->flow.tp_dst = match->tp_dst;
memcpy(rule->flow.dl_src, match->dl_src, ETH_ADDR_LEN);
memcpy(rule->flow.dl_dst, match->dl_dst, ETH_ADDR_LEN);
- rule->flow.nw_tos = match->nw_tos;
+ rule->flow.nw_tos = match->nw_tos & IP_DSCP_MASK;
rule->flow.nw_proto = match->nw_proto;
/* Translate VLANs. */
ofpfw = (OVS_FORCE uint32_t) (wc->wildcards & WC_INVARIANTS);
ofpfw |= ofputil_netmask_to_wcbits(wc->nw_src_mask) << OFPFW_NW_SRC_SHIFT;
ofpfw |= ofputil_netmask_to_wcbits(wc->nw_dst_mask) << OFPFW_NW_DST_SHIFT;
- if (wc->wildcards & FWW_NW_TOS) {
+ if (wc->wildcards & FWW_NW_DSCP) {
ofpfw |= OFPFW_NW_TOS;
}
match->dl_type = ofputil_dl_type_to_openflow(rule->flow.dl_type);
match->nw_src = rule->flow.nw_src;
match->nw_dst = rule->flow.nw_dst;
- match->nw_tos = rule->flow.nw_tos;
+ match->nw_tos = rule->flow.nw_tos & IP_DSCP_MASK;
match->nw_proto = rule->flow.nw_proto;
match->tp_src = rule->flow.tp_src;
match->tp_dst = rule->flow.tp_dst;
unsigned int extra_multiple;
};
+/* Represents a malformed OpenFlow message. */
+static const struct ofputil_msg_type ofputil_invalid_type = {
+ OFPUTIL_MSG_INVALID, 0, "OFPUTIL_MSG_INVALID", 0, 0
+};
+
struct ofputil_msg_category {
const char *name; /* e.g. "OpenFlow message" */
const struct ofputil_msg_type *types;
int missing_error; /* ofp_mkerr() value for missing type. */
};
-static bool
-ofputil_length_ok(const struct ofputil_msg_category *cat,
- const struct ofputil_msg_type *type,
- unsigned int size)
+static int
+ofputil_check_length(const struct ofputil_msg_type *type, unsigned int size)
{
switch (type->extra_multiple) {
case 0:
if (size != type->min_size) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "received %s %s with incorrect "
+ VLOG_WARN_RL(&bad_ofmsg_rl, "received %s with incorrect "
"length %u (expected length %u)",
- cat->name, type->name, size, type->min_size);
- return false;
+ type->name, size, type->min_size);
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
- return true;
+ return 0;
case 1:
if (size < type->min_size) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "received %s %s with incorrect "
+ VLOG_WARN_RL(&bad_ofmsg_rl, "received %s with incorrect "
"length %u (expected length at least %u bytes)",
- cat->name, type->name, size, type->min_size);
- return false;
+ type->name, size, type->min_size);
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
- return true;
+ return 0;
default:
if (size < type->min_size
|| (size - type->min_size) % type->extra_multiple) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "received %s %s with incorrect "
+ VLOG_WARN_RL(&bad_ofmsg_rl, "received %s with incorrect "
"length %u (must be exactly %u bytes or longer "
"by an integer multiple of %u bytes)",
- cat->name, type->name, size,
+ type->name, size,
type->min_size, type->extra_multiple);
- return false;
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
- return true;
+ return 0;
}
}
static int
ofputil_lookup_openflow_message(const struct ofputil_msg_category *cat,
- uint32_t value, unsigned int size,
+ uint32_t value,
const struct ofputil_msg_type **typep)
{
const struct ofputil_msg_type *type;
for (type = cat->types; type < &cat->types[cat->n_types]; type++) {
if (type->value == value) {
- if (!ofputil_length_ok(cat, type, size)) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
- }
*typep = type;
return 0;
}
}
static int
-ofputil_decode_vendor(const struct ofp_header *oh,
+ofputil_decode_vendor(const struct ofp_header *oh, size_t length,
const struct ofputil_msg_type **typep)
{
- BUILD_ASSERT_DECL(sizeof(struct nxt_set_flow_format)
- != sizeof(struct nxt_flow_mod_table_id));
-
static const struct ofputil_msg_type nxt_messages[] = {
{ OFPUTIL_NXT_ROLE_REQUEST,
NXT_ROLE_REQUEST, "NXT_ROLE_REQUEST",
const struct ofp_vendor_header *ovh;
const struct nicira_header *nh;
+ if (length < sizeof(struct ofp_vendor_header)) {
+ if (length == ntohs(oh->length)) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "truncated vendor message");
+ }
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
+ }
+
ovh = (const struct ofp_vendor_header *) oh;
if (ovh->vendor != htonl(NX_VENDOR_ID)) {
VLOG_WARN_RL(&bad_ofmsg_rl, "received vendor message for unknown "
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
}
- if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "received Nicira vendor message of "
- "length %u (expected at least %zu)",
- ntohs(ovh->header.length), sizeof(struct nicira_header));
+ if (length < sizeof(struct nicira_header)) {
+ if (length == ntohs(oh->length)) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "received Nicira vendor message of "
+ "length %u (expected at least %zu)",
+ ntohs(ovh->header.length),
+ sizeof(struct nicira_header));
+ }
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
nh = (const struct nicira_header *) oh;
return ofputil_lookup_openflow_message(&nxt_category, ntohl(nh->subtype),
- ntohs(oh->length), typep);
+ typep);
}
static int
-check_nxstats_msg(const struct ofp_header *oh)
+check_nxstats_msg(const struct ofp_header *oh, size_t length)
{
const struct ofp_stats_msg *osm = (const struct ofp_stats_msg *) oh;
ovs_be32 vendor;
+ if (length < sizeof(struct ofp_vendor_stats_msg)) {
+ if (length == ntohs(oh->length)) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "truncated vendor stats message");
+ }
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
+ }
+
memcpy(&vendor, osm + 1, sizeof vendor);
if (vendor != htonl(NX_VENDOR_ID)) {
VLOG_WARN_RL(&bad_ofmsg_rl, "received vendor stats message for "
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
}
- if (ntohs(osm->header.length) < sizeof(struct nicira_stats_msg)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "truncated Nicira stats message");
+ if (length < sizeof(struct nicira_stats_msg)) {
+ if (length == ntohs(osm->header.length)) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "truncated Nicira stats message");
+ }
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
}
static int
-ofputil_decode_nxst_request(const struct ofp_header *oh,
+ofputil_decode_nxst_request(const struct ofp_header *oh, size_t length,
const struct ofputil_msg_type **typep)
{
static const struct ofputil_msg_type nxst_requests[] = {
const struct nicira_stats_msg *nsm;
int error;
- error = check_nxstats_msg(oh);
+ error = check_nxstats_msg(oh, length);
if (error) {
return error;
}
nsm = (struct nicira_stats_msg *) oh;
return ofputil_lookup_openflow_message(&nxst_request_category,
- ntohl(nsm->subtype),
- ntohs(oh->length), typep);
+ ntohl(nsm->subtype), typep);
}
static int
-ofputil_decode_nxst_reply(const struct ofp_header *oh,
+ofputil_decode_nxst_reply(const struct ofp_header *oh, size_t length,
const struct ofputil_msg_type **typep)
{
static const struct ofputil_msg_type nxst_replies[] = {
const struct nicira_stats_msg *nsm;
int error;
- error = check_nxstats_msg(oh);
+ error = check_nxstats_msg(oh, length);
if (error) {
return error;
}
nsm = (struct nicira_stats_msg *) oh;
return ofputil_lookup_openflow_message(&nxst_reply_category,
- ntohl(nsm->subtype),
- ntohs(oh->length), typep);
+ ntohl(nsm->subtype), typep);
+}
+
+static int
+check_stats_msg(const struct ofp_header *oh, size_t length)
+{
+ if (length < sizeof(struct ofp_stats_msg)) {
+ if (length == ntohs(oh->length)) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "truncated stats message");
+ }
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
+ }
+
+ return 0;
}
static int
-ofputil_decode_ofpst_request(const struct ofp_header *oh,
+ofputil_decode_ofpst_request(const struct ofp_header *oh, size_t length,
const struct ofputil_msg_type **typep)
{
static const struct ofputil_msg_type ofpst_requests[] = {
const struct ofp_stats_msg *request = (const struct ofp_stats_msg *) oh;
int error;
+ error = check_stats_msg(oh, length);
+ if (error) {
+ return error;
+ }
+
error = ofputil_lookup_openflow_message(&ofpst_request_category,
- ntohs(request->type),
- ntohs(oh->length), typep);
+ ntohs(request->type), typep);
if (!error && request->type == htons(OFPST_VENDOR)) {
- error = ofputil_decode_nxst_request(oh, typep);
+ error = ofputil_decode_nxst_request(oh, length, typep);
}
return error;
}
static int
-ofputil_decode_ofpst_reply(const struct ofp_header *oh,
+ofputil_decode_ofpst_reply(const struct ofp_header *oh, size_t length,
const struct ofputil_msg_type **typep)
{
static const struct ofputil_msg_type ofpst_replies[] = {
const struct ofp_stats_msg *reply = (const struct ofp_stats_msg *) oh;
int error;
+ error = check_stats_msg(oh, length);
+ if (error) {
+ return error;
+ }
+
error = ofputil_lookup_openflow_message(&ofpst_reply_category,
- ntohs(reply->type),
- ntohs(oh->length), typep);
+ ntohs(reply->type), typep);
if (!error && reply->type == htons(OFPST_VENDOR)) {
- error = ofputil_decode_nxst_reply(oh, typep);
+ error = ofputil_decode_nxst_reply(oh, length, typep);
}
return error;
}
-/* Decodes the message type represented by 'oh'. Returns 0 if successful or
- * an OpenFlow error code constructed with ofp_mkerr() on failure. Either
- * way, stores in '*typep' a type structure that can be inspected with the
- * ofputil_msg_type_*() functions.
- *
- * oh->length must indicate the correct length of the message (and must be at
- * least sizeof(struct ofp_header)).
- *
- * Success indicates that 'oh' is at least as long as the minimum-length
- * message of its type. */
-int
-ofputil_decode_msg_type(const struct ofp_header *oh,
- const struct ofputil_msg_type **typep)
+static int
+ofputil_decode_msg_type__(const struct ofp_header *oh, size_t length,
+ const struct ofputil_msg_type **typep)
{
static const struct ofputil_msg_type ofpt_messages[] = {
{ OFPUTIL_OFPT_HELLO,
int error;
- error = ofputil_lookup_openflow_message(&ofpt_category, oh->type,
- ntohs(oh->length), typep);
+ error = ofputil_lookup_openflow_message(&ofpt_category, oh->type, typep);
if (!error) {
switch (oh->type) {
case OFPT_VENDOR:
- error = ofputil_decode_vendor(oh, typep);
+ error = ofputil_decode_vendor(oh, length, typep);
break;
case OFPT_STATS_REQUEST:
- error = ofputil_decode_ofpst_request(oh, typep);
+ error = ofputil_decode_ofpst_request(oh, length, typep);
break;
case OFPT_STATS_REPLY:
- error = ofputil_decode_ofpst_reply(oh, typep);
+ error = ofputil_decode_ofpst_reply(oh, length, typep);
default:
break;
}
}
+ return error;
+}
+
+/* Decodes the message type represented by 'oh'. Returns 0 if successful or
+ * an OpenFlow error code constructed with ofp_mkerr() on failure. Either
+ * way, stores in '*typep' a type structure that can be inspected with the
+ * ofputil_msg_type_*() functions.
+ *
+ * oh->length must indicate the correct length of the message (and must be at
+ * least sizeof(struct ofp_header)).
+ *
+ * Success indicates that 'oh' is at least as long as the minimum-length
+ * message of its type. */
+int
+ofputil_decode_msg_type(const struct ofp_header *oh,
+ const struct ofputil_msg_type **typep)
+{
+ size_t length = ntohs(oh->length);
+ int error;
+
+ error = ofputil_decode_msg_type__(oh, length, typep);
+ if (!error) {
+ error = ofputil_check_length(*typep, length);
+ }
if (error) {
- static const struct ofputil_msg_type ofputil_invalid_type = {
- OFPUTIL_MSG_INVALID,
- 0, "OFPUTIL_MSG_INVALID",
- 0, 0
- };
+ *typep = &ofputil_invalid_type;
+ }
+ return error;
+}
+
+/* Decodes the message type represented by 'oh', of which only the first
+ * 'length' bytes are available. Returns 0 if successful or an OpenFlow error
+ * code constructed with ofp_mkerr() on failure. Either way, stores in
+ * '*typep' a type structure that can be inspected with the
+ * ofputil_msg_type_*() functions. */
+int
+ofputil_decode_msg_type_partial(const struct ofp_header *oh, size_t length,
+ const struct ofputil_msg_type **typep)
+{
+ int error;
+ error = (length >= sizeof *oh
+ ? ofputil_decode_msg_type__(oh, length, typep)
+ : ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN));
+ if (error) {
*typep = &ofputil_invalid_type;
}
return error;
{
const struct flow_wildcards *wc = &rule->wc;
+ BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7);
+
/* Only NXM supports separately wildcards the Ethernet multicast bit. */
if (!(wc->wildcards & FWW_DL_DST) != !(wc->wildcards & FWW_ETH_MCAST)) {
return NXFF_NXM;
return NXFF_NXM;
}
+ /* Only NXM supports matching fragments. */
+ if (wc->nw_frag_mask) {
+ return NXFF_NXM;
+ }
+
+ /* Only NXM supports matching IPv6 flow label. */
+ if (!(wc->wildcards & FWW_IPV6_LABEL)) {
+ return NXFF_NXM;
+ }
+
+ /* Only NXM supports matching IP ECN bits. */
+ if (!(wc->wildcards & FWW_NW_ECN)) {
+ return NXFF_NXM;
+ }
+
+ /* Only NXM supports matching IP TTL/hop limit. */
+ if (!(wc->wildcards & FWW_NW_TTL)) {
+ return NXFF_NXM;
+ }
+
/* Other formats can express this rule. */
return NXFF_OPENFLOW10;
}
*
* Does not validate the flow_mod actions. */
int
-ofputil_decode_flow_mod(struct flow_mod *fm, const struct ofp_header *oh,
- bool flow_mod_table_id)
+ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
+ const struct ofp_header *oh, bool flow_mod_table_id)
{
const struct ofputil_msg_type *type;
uint16_t command;
* 'flow_mod_table_id' should be true if the NXT_FLOW_MOD_TABLE_ID extension is
* enabled, false otherwise. */
struct ofpbuf *
-ofputil_encode_flow_mod(const struct flow_mod *fm,
+ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
enum nx_flow_format flow_format,
bool flow_mod_table_id)
{
}
static int
-ofputil_decode_ofpst_flow_request(struct flow_stats_request *fsr,
+ofputil_decode_ofpst_flow_request(struct ofputil_flow_stats_request *fsr,
const struct ofp_header *oh,
bool aggregate)
{
}
static int
-ofputil_decode_nxst_flow_request(struct flow_stats_request *fsr,
+ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
const struct ofp_header *oh,
bool aggregate)
{
* request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
* successful, otherwise an OpenFlow error code. */
int
-ofputil_decode_flow_stats_request(struct flow_stats_request *fsr,
+ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
const struct ofp_header *oh)
{
const struct ofputil_msg_type *type;
* OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
* 'flow_format', and returns the message. */
struct ofpbuf *
-ofputil_encode_flow_stats_request(const struct flow_stats_request *fsr,
+ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
enum nx_flow_format flow_format)
{
struct ofpbuf *msg;
struct ofpbuf *rw_packet)
{
int total_len = pin->packet->size;
- struct ofp_packet_in *opi;
+ struct ofp_packet_in opi;
if (rw_packet) {
if (pin->send_len < rw_packet->size) {
}
/* Add OFPT_PACKET_IN. */
- opi = ofpbuf_push_zeros(rw_packet, offsetof(struct ofp_packet_in, data));
- opi->header.version = OFP_VERSION;
- opi->header.type = OFPT_PACKET_IN;
- opi->total_len = htons(total_len);
- opi->in_port = htons(pin->in_port);
- opi->reason = pin->reason;
- opi->buffer_id = htonl(pin->buffer_id);
+ memset(&opi, 0, sizeof opi);
+ opi.header.version = OFP_VERSION;
+ opi.header.type = OFPT_PACKET_IN;
+ opi.total_len = htons(total_len);
+ opi.in_port = htons(pin->in_port);
+ opi.reason = pin->reason;
+ opi.buffer_id = htonl(pin->buffer_id);
+ ofpbuf_push(rw_packet, &opi, offsetof(struct ofp_packet_in, data));
update_openflow_length(rw_packet);
return rw_packet;
struct ofpbuf *buffer;
buffer = make_add_flow(rule, buffer_id, idle_timeout, sizeof *oao);
- oao = ofpbuf_put_zeros(buffer, sizeof *oao);
- oao->type = htons(OFPAT_OUTPUT);
- oao->len = htons(sizeof *oao);
- oao->port = htons(out_port);
+ ofputil_put_OFPAT_OUTPUT(buffer)->port = htons(out_port);
return buffer;
} else {
return make_add_flow(rule, buffer_id, idle_timeout, 0);
opo->header.length = htons(size);
opo->header.xid = htonl(0);
opo->buffer_id = htonl(buffer_id);
- opo->in_port = htons(in_port == ODPP_LOCAL ? OFPP_LOCAL : in_port);
+ opo->in_port = htons(in_port);
opo->actions_len = htons(actions_len);
ofpbuf_put(out, actions, actions_len);
if (packet) {
return out;
}
+const char *
+ofputil_frag_handling_to_string(enum ofp_config_flags flags)
+{
+ switch (flags & OFPC_FRAG_MASK) {
+ case OFPC_FRAG_NORMAL: return "normal";
+ case OFPC_FRAG_DROP: return "drop";
+ case OFPC_FRAG_REASM: return "reassemble";
+ case OFPC_FRAG_NX_MATCH: return "nx-match";
+ }
+
+ NOT_REACHED();
+}
+
+bool
+ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
+{
+ if (!strcasecmp(s, "normal")) {
+ *flags = OFPC_FRAG_NORMAL;
+ } else if (!strcasecmp(s, "drop")) {
+ *flags = OFPC_FRAG_DROP;
+ } else if (!strcasecmp(s, "reassemble")) {
+ *flags = OFPC_FRAG_REASM;
+ } else if (!strcasecmp(s, "nx-match")) {
+ *flags = OFPC_FRAG_NX_MATCH;
+ } else {
+ return false;
+ }
+ return true;
+}
+
/* Checks that 'port' is a valid output port for the OFPAT_OUTPUT action, given
* that the switch will never have more than 'max_ports' ports. Returns 0 if
* 'port' is valid, otherwise an ofp_mkerr() return code. */
}
}
+#define OFPUTIL_NAMED_PORTS \
+ OFPUTIL_NAMED_PORT(IN_PORT) \
+ OFPUTIL_NAMED_PORT(TABLE) \
+ OFPUTIL_NAMED_PORT(NORMAL) \
+ OFPUTIL_NAMED_PORT(FLOOD) \
+ OFPUTIL_NAMED_PORT(ALL) \
+ OFPUTIL_NAMED_PORT(CONTROLLER) \
+ OFPUTIL_NAMED_PORT(LOCAL) \
+ OFPUTIL_NAMED_PORT(NONE)
+
+/* Checks whether 's' is the string representation of an OpenFlow port number,
+ * either as an integer or a string name (e.g. "LOCAL"). If it is, stores the
+ * number in '*port' and returns true. Otherwise, returns false. */
+bool
+ofputil_port_from_string(const char *name, uint16_t *port)
+{
+ struct pair {
+ const char *name;
+ uint16_t value;
+ };
+ static const struct pair pairs[] = {
+#define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
+ OFPUTIL_NAMED_PORTS
+#undef OFPUTIL_NAMED_PORT
+ };
+ static const int n_pairs = ARRAY_SIZE(pairs);
+ int i;
+
+ if (str_to_int(name, 0, &i) && i >= 0 && i < UINT16_MAX) {
+ *port = i;
+ return true;
+ }
+
+ for (i = 0; i < n_pairs; i++) {
+ if (!strcasecmp(name, pairs[i].name)) {
+ *port = pairs[i].value;
+ return true;
+ }
+ }
+ return false;
+}
+
+/* Appends to 's' a string representation of the OpenFlow port number 'port'.
+ * Most ports' string representation is just the port number, but for special
+ * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
+void
+ofputil_format_port(uint16_t port, struct ds *s)
+{
+ const char *name;
+
+ switch (port) {
+#define OFPUTIL_NAMED_PORT(NAME) case OFPP_##NAME: name = #NAME; break;
+ OFPUTIL_NAMED_PORTS
+#undef OFPUTIL_NAMED_PORT
+
+ default:
+ ds_put_format(s, "%"PRIu16, port);
+ return;
+ }
+ ds_put_cstr(s, name);
+}
+
+static int
+check_resubmit_table(const struct nx_action_resubmit *nar)
+{
+ if (nar->pad[0] || nar->pad[1] || nar->pad[2]) {
+ return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
+ }
+ return 0;
+}
+
+static int
+check_output_reg(const struct nx_action_output_reg *naor,
+ const struct flow *flow)
+{
+ size_t i;
+
+ for (i = 0; i < sizeof naor->zero; i++) {
+ if (naor->zero[i]) {
+ return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
+ }
+ }
+
+ return nxm_src_check(naor->src, nxm_decode_ofs(naor->ofs_nbits),
+ nxm_decode_n_bits(naor->ofs_nbits), flow);
+}
+
int
validate_actions(const union ofp_action *actions, size_t n_actions,
const struct flow *flow, int max_ports)
break;
case OFPUTIL_NXAST_MULTIPATH:
- error = multipath_check((const struct nx_action_multipath *) a);
+ error = multipath_check((const struct nx_action_multipath *) a,
+ flow);
break;
case OFPUTIL_NXAST_AUTOPATH:
- error = autopath_check((const struct nx_action_autopath *) a);
+ error = autopath_check((const struct nx_action_autopath *) a,
+ flow);
+ break;
+
+ case OFPUTIL_NXAST_BUNDLE:
+ case OFPUTIL_NXAST_BUNDLE_LOAD:
+ error = bundle_check((const struct nx_action_bundle *) a,
+ max_ports, flow);
+ break;
+
+ case OFPUTIL_NXAST_OUTPUT_REG:
+ error = check_output_reg((const struct nx_action_output_reg *) a,
+ flow);
+ break;
+
+ case OFPUTIL_NXAST_RESUBMIT_TABLE:
+ error = check_resubmit_table(
+ (const struct nx_action_resubmit *) a);
+ break;
+
+ case OFPUTIL_NXAST_LEARN:
+ error = learn_check((const struct nx_action_learn *) a, flow);
break;
case OFPUTIL_OFPAT_STRIP_VLAN:
case OFPUTIL_NXAST_POP_QUEUE:
case OFPUTIL_NXAST_NOTE:
case OFPUTIL_NXAST_SET_TUNNEL64:
+ case OFPUTIL_NXAST_EXIT:
break;
}
return 0;
}
-struct ofputil_ofpat_action {
- enum ofputil_action_code code;
- unsigned int len;
-};
-
-static const struct ofputil_ofpat_action ofpat_actions[] = {
- { OFPUTIL_OFPAT_OUTPUT, 8 },
- { OFPUTIL_OFPAT_SET_VLAN_VID, 8 },
- { OFPUTIL_OFPAT_SET_VLAN_PCP, 8 },
- { OFPUTIL_OFPAT_STRIP_VLAN, 8 },
- { OFPUTIL_OFPAT_SET_DL_SRC, 16 },
- { OFPUTIL_OFPAT_SET_DL_DST, 16 },
- { OFPUTIL_OFPAT_SET_NW_SRC, 8 },
- { OFPUTIL_OFPAT_SET_NW_DST, 8 },
- { OFPUTIL_OFPAT_SET_NW_TOS, 8 },
- { OFPUTIL_OFPAT_SET_TP_SRC, 8 },
- { OFPUTIL_OFPAT_SET_TP_DST, 8 },
- { OFPUTIL_OFPAT_ENQUEUE, 16 },
-};
-
-struct ofputil_nxast_action {
- enum ofputil_action_code code;
+struct ofputil_action {
+ int code;
unsigned int min_len;
unsigned int max_len;
};
-static const struct ofputil_nxast_action nxast_actions[] = {
- { 0, UINT_MAX, UINT_MAX }, /* NXAST_SNAT__OBSOLETE */
- { OFPUTIL_NXAST_RESUBMIT, 16, 16 },
- { OFPUTIL_NXAST_SET_TUNNEL, 16, 16 },
- { 0, UINT_MAX, UINT_MAX }, /* NXAST_DROP_SPOOFED_ARP__OBSOLETE */
- { OFPUTIL_NXAST_SET_QUEUE, 16, 16 },
- { OFPUTIL_NXAST_POP_QUEUE, 16, 16 },
- { OFPUTIL_NXAST_REG_MOVE, 24, 24 },
- { OFPUTIL_NXAST_REG_LOAD, 24, 24 },
- { OFPUTIL_NXAST_NOTE, 16, UINT_MAX },
- { OFPUTIL_NXAST_SET_TUNNEL64, 24, 24 },
- { OFPUTIL_NXAST_MULTIPATH, 32, 32 },
- { OFPUTIL_NXAST_AUTOPATH, 24, 24 },
-};
+static const struct ofputil_action action_bad_type
+ = { -OFP_MKERR(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE), 0, UINT_MAX };
+static const struct ofputil_action action_bad_len
+ = { -OFP_MKERR(OFPET_BAD_ACTION, OFPBAC_BAD_LEN), 0, UINT_MAX };
+static const struct ofputil_action action_bad_vendor
+ = { -OFP_MKERR(OFPET_BAD_ACTION, OFPBAC_BAD_VENDOR), 0, UINT_MAX };
-static int
+static const struct ofputil_action *
ofputil_decode_ofpat_action(const union ofp_action *a)
{
- int type = ntohs(a->type);
-
- if (type < ARRAY_SIZE(ofpat_actions)) {
- const struct ofputil_ofpat_action *ooa = &ofpat_actions[type];
- unsigned int len = ntohs(a->header.len);
+ enum ofp_action_type type = ntohs(a->type);
+
+ switch (type) {
+#define OFPAT_ACTION(ENUM, STRUCT, NAME) \
+ case ENUM: { \
+ static const struct ofputil_action action = { \
+ OFPUTIL_##ENUM, \
+ sizeof(struct STRUCT), \
+ sizeof(struct STRUCT) \
+ }; \
+ return &action; \
+ }
+#include "ofp-util.def"
- return (len == ooa->len
- ? ooa->code
- : -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN));
- } else {
- return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE);
+ case OFPAT_VENDOR:
+ default:
+ return &action_bad_type;
}
}
-static int
+static const struct ofputil_action *
ofputil_decode_nxast_action(const union ofp_action *a)
{
- unsigned int len = ntohs(a->header.len);
-
- if (len < sizeof(struct nx_action_header)) {
- return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
- } else {
- const struct nx_action_header *nah = (const void *) a;
- int subtype = ntohs(nah->subtype);
-
- if (subtype <= ARRAY_SIZE(nxast_actions)) {
- const struct ofputil_nxast_action *ona = &nxast_actions[subtype];
- if (len >= ona->min_len && len <= ona->max_len) {
- return ona->code;
- } else if (ona->min_len == UINT_MAX) {
- return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE);
- } else {
- return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
- }
- } else {
- return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE);
+ const struct nx_action_header *nah = (const struct nx_action_header *) a;
+ enum nx_action_subtype subtype = ntohs(nah->subtype);
+
+ switch (subtype) {
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
+ case ENUM: { \
+ static const struct ofputil_action action = { \
+ OFPUTIL_##ENUM, \
+ sizeof(struct STRUCT), \
+ EXTENSIBLE ? UINT_MAX : sizeof(struct STRUCT) \
+ }; \
+ return &action; \
}
+#include "ofp-util.def"
+
+ case NXAST_SNAT__OBSOLETE:
+ case NXAST_DROP_SPOOFED_ARP__OBSOLETE:
+ default:
+ return &action_bad_type;
}
}
int
ofputil_decode_action(const union ofp_action *a)
{
+ const struct ofputil_action *action;
+ uint16_t len = ntohs(a->header.len);
+
if (a->type != htons(OFPAT_VENDOR)) {
- return ofputil_decode_ofpat_action(a);
- } else if (a->vendor.vendor == htonl(NX_VENDOR_ID)) {
- return ofputil_decode_nxast_action(a);
+ action = ofputil_decode_ofpat_action(a);
} else {
- return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_VENDOR);
+ switch (ntohl(a->vendor.vendor)) {
+ case NX_VENDOR_ID:
+ if (len < sizeof(struct nx_action_header)) {
+ return -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
+ }
+ action = ofputil_decode_nxast_action(a);
+ break;
+ default:
+ action = &action_bad_vendor;
+ break;
+ }
}
+
+ return (len >= action->min_len && len <= action->max_len
+ ? action->code
+ : -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN));
}
/* Parses 'a' and returns its type as an OFPUTIL_OFPAT_* or OFPUTIL_NXAST_*
enum ofputil_action_code
ofputil_decode_action_unsafe(const union ofp_action *a)
{
+ const struct ofputil_action *action;
+
if (a->type != htons(OFPAT_VENDOR)) {
- return ofpat_actions[ntohs(a->type)].code;
+ action = ofputil_decode_ofpat_action(a);
} else {
- const struct nx_action_header *nah = (const void *) a;
+ action = ofputil_decode_nxast_action(a);
+ }
- return nxast_actions[ntohs(nah->subtype)].code;
+ return action->code;
+}
+
+/* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if
+ * 'name' is "output" then the return value is OFPUTIL_OFPAT_OUTPUT), or -1 if
+ * 'name' is not the name of any action.
+ *
+ * ofp-util.def lists the mapping from names to action. */
+int
+ofputil_action_code_from_name(const char *name)
+{
+ static const char *names[OFPUTIL_N_ACTIONS] = {
+#define OFPAT_ACTION(ENUM, STRUCT, NAME) NAME,
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
+#include "ofp-util.def"
+ };
+
+ const char **p;
+
+ for (p = names; p < &names[ARRAY_SIZE(names)]; p++) {
+ if (*p && !strcasecmp(name, *p)) {
+ return p - names;
+ }
}
+ return -1;
}
+/* Appends an action of the type specified by 'code' to 'buf' and returns the
+ * action. Initializes the parts of 'action' that identify it as having type
+ * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that
+ * have variable length, the length used and cleared is that of struct
+ * <STRUCT>. */
+void *
+ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf)
+{
+ switch (code) {
+#define OFPAT_ACTION(ENUM, STRUCT, NAME) \
+ case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
+ case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
+#include "ofp-util.def"
+ }
+ NOT_REACHED();
+}
+
+#define OFPAT_ACTION(ENUM, STRUCT, NAME) \
+ void \
+ ofputil_init_##ENUM(struct STRUCT *s) \
+ { \
+ memset(s, 0, sizeof *s); \
+ s->type = htons(ENUM); \
+ s->len = htons(sizeof *s); \
+ } \
+ \
+ struct STRUCT * \
+ ofputil_put_##ENUM(struct ofpbuf *buf) \
+ { \
+ struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
+ ofputil_init_##ENUM(s); \
+ return s; \
+ }
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
+ void \
+ ofputil_init_##ENUM(struct STRUCT *s) \
+ { \
+ memset(s, 0, sizeof *s); \
+ s->type = htons(OFPAT_VENDOR); \
+ s->len = htons(sizeof *s); \
+ s->vendor = htonl(NX_VENDOR_ID); \
+ s->subtype = htons(ENUM); \
+ } \
+ \
+ struct STRUCT * \
+ ofputil_put_##ENUM(struct ofpbuf *buf) \
+ { \
+ struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
+ ofputil_init_##ENUM(s); \
+ return s; \
+ }
+#include "ofp-util.def"
+
/* Returns true if 'action' outputs to 'port', false otherwise. */
bool
action_outputs_to_port(const union ofp_action *action, ovs_be16 port)
MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
MAY_NW_PROTO = 1 << 2, /* nw_proto */
- MAY_NW_TOS = 1 << 3, /* nw_tos */
+ MAY_IPVx = 1 << 3, /* tos, frag, ttl */
MAY_ARP_SHA = 1 << 4, /* arp_sha */
MAY_ARP_THA = 1 << 5, /* arp_tha */
- MAY_IPV6_ADDR = 1 << 6, /* ipv6_src, ipv6_dst */
+ MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
MAY_ND_TARGET = 1 << 7 /* nd_target */
} may_match;
/* Figure out what fields may be matched. */
if (rule->flow.dl_type == htons(ETH_TYPE_IP)) {
- may_match = MAY_NW_PROTO | MAY_NW_TOS | MAY_NW_ADDR;
+ may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
if (rule->flow.nw_proto == IPPROTO_TCP ||
rule->flow.nw_proto == IPPROTO_UDP ||
rule->flow.nw_proto == IPPROTO_ICMP) {
}
} else if (rule->flow.dl_type == htons(ETH_TYPE_IPV6)
&& flow_format == NXFF_NXM) {
- may_match = MAY_NW_PROTO | MAY_NW_TOS | MAY_IPV6_ADDR;
+ may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
if (rule->flow.nw_proto == IPPROTO_TCP ||
rule->flow.nw_proto == IPPROTO_UDP) {
may_match |= MAY_TP_ADDR;
if (!(may_match & MAY_NW_PROTO)) {
wc.wildcards |= FWW_NW_PROTO;
}
- if (!(may_match & MAY_NW_TOS)) {
- wc.wildcards |= FWW_NW_TOS;
+ if (!(may_match & MAY_IPVx)) {
+ wc.wildcards |= FWW_NW_DSCP;
+ wc.wildcards |= FWW_NW_ECN;
+ wc.wildcards |= FWW_NW_TTL;
}
if (!(may_match & MAY_ARP_SHA)) {
wc.wildcards |= FWW_ARP_SHA;
if (!(may_match & MAY_ARP_THA)) {
wc.wildcards |= FWW_ARP_THA;
}
- if (!(may_match & MAY_IPV6_ADDR)) {
+ if (!(may_match & MAY_IPV6)) {
wc.ipv6_src_mask = wc.ipv6_dst_mask = in6addr_any;
+ wc.wildcards |= FWW_IPV6_LABEL;
}
if (!(may_match & MAY_ND_TARGET)) {
wc.wildcards |= FWW_ND_TARGET;
{
return n ? xmemdup(actions, n * sizeof *actions) : NULL;
}
+
+/* Parses a key or a key-value pair from '*stringp'.
+ *
+ * On success: Stores the key into '*keyp'. Stores the value, if present, into
+ * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
+ * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
+ * are substrings of '*stringp' created by replacing some of its bytes by null
+ * terminators. Returns true.
+ *
+ * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
+ * NULL and returns false. */
+bool
+ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
+{
+ char *pos, *key, *value;
+ size_t key_len;
+
+ pos = *stringp;
+ pos += strspn(pos, ", \t\r\n");
+ if (*pos == '\0') {
+ *keyp = *valuep = NULL;
+ return false;
+ }
+
+ key = pos;
+ key_len = strcspn(pos, ":=(, \t\r\n");
+ if (key[key_len] == ':' || key[key_len] == '=') {
+ /* The value can be separated by a colon. */
+ size_t value_len;
+
+ value = key + key_len + 1;
+ value_len = strcspn(value, ", \t\r\n");
+ pos = value + value_len + (value[value_len] != '\0');
+ value[value_len] = '\0';
+ } else if (key[key_len] == '(') {
+ /* The value can be surrounded by balanced parentheses. The outermost
+ * set of parentheses is removed. */
+ int level = 1;
+ size_t value_len;
+
+ value = key + key_len + 1;
+ for (value_len = 0; level > 0; value_len++) {
+ switch (value[value_len]) {
+ case '\0':
+ ovs_fatal(0, "unbalanced parentheses in argument to %s", key);
+
+ case '(':
+ level++;
+ break;
+
+ case ')':
+ level--;
+ break;
+ }
+ }
+ value[value_len - 1] = '\0';
+ pos = value + value_len;
+ } else {
+ /* There might be no value at all. */
+ value = key + key_len; /* Will become the empty string below. */
+ pos = key + key_len + (key[key_len] != '\0');
+ }
+ key[key_len] = '\0';
+
+ *stringp = pos;
+ *keyp = key;
+ *valuep = value;
+ return true;
+}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff