/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <config.h>
#include "ofp-print.h"
+#include <errno.h>
#include <inttypes.h>
#include <stdlib.h>
#include "byte-order.h"
#include "classifier.h"
+#include "dynamic-string.h"
+#include "multipath.h"
#include "nx-match.h"
+#include "ofp-errors.h"
#include "ofp-util.h"
#include "ofpbuf.h"
#include "packets.h"
/* Initialize most of rule->wc. */
flow_wildcards_init_catchall(wc);
wc->wildcards = 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);
+
if (ofpfw & OFPFW_NW_TOS) {
wc->wildcards |= FWW_NW_TOS;
}
if (flow_format == NXFF_TUN_ID_FROM_COOKIE && !(ofpfw & NXFW_TUN_ID)) {
rule->flow.tun_id = htonll(ntohll(cookie) >> 32);
- } else {
- wc->wildcards |= FWW_TUN_ID;
- rule->flow.tun_id = htonll(0);
}
if (ofpfw & OFPFW_DL_DST) {
rule->flow.nw_dst = match->nw_dst;
rule->flow.in_port = (match->in_port == htons(OFPP_LOCAL) ? ODPP_LOCAL
: ntohs(match->in_port));
- rule->flow.dl_type = match->dl_type;
+ rule->flow.dl_type = ofputil_dl_type_from_openflow(match->dl_type);
rule->flow.tp_src = match->tp_src;
rule->flow.tp_dst = match->tp_dst;
memcpy(rule->flow.dl_src, match->dl_src, ETH_ADDR_LEN);
/* Tunnel ID. */
if (flow_format == NXFF_TUN_ID_FROM_COOKIE) {
- if (wc->wildcards & FWW_TUN_ID) {
+ if (wc->tun_id_mask == htonll(0)) {
ofpfw |= NXFW_TUN_ID;
} else {
uint32_t cookie_lo = ntohll(cookie_in);
: rule->flow.in_port);
memcpy(match->dl_src, rule->flow.dl_src, ETH_ADDR_LEN);
memcpy(match->dl_dst, rule->flow.dl_dst, ETH_ADDR_LEN);
- match->dl_type = rule->flow.dl_type;
+ 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;
memset(match->pad2, '\0', sizeof match->pad2);
}
+/* Given a 'dl_type' value in the format used in struct flow, returns the
+ * corresponding 'dl_type' value for use in an OpenFlow ofp_match structure. */
+ovs_be16
+ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
+{
+ return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
+ ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
+ : flow_dl_type);
+}
+
+/* Given a 'dl_type' value in the format used in an OpenFlow ofp_match
+ * structure, returns the corresponding 'dl_type' value for use in struct
+ * flow. */
+ovs_be16
+ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
+{
+ return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
+ ? htons(FLOW_DL_TYPE_NONE)
+ : ofp_dl_type);
+}
+
/* Returns a transaction ID to use for an outgoing OpenFlow message. */
static ovs_be32
alloc_xid(void)
};
static const struct ofputil_msg_category nxst_request_category = {
- "Nicira extension statistics",
+ "Nicira extension statistics request",
nxst_requests, ARRAY_SIZE(nxst_requests),
OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE)
};
};
static const struct ofputil_msg_category nxst_reply_category = {
- "Nicira extension statistics",
+ "Nicira extension statistics reply",
nxst_replies, ARRAY_SIZE(nxst_replies),
OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE)
};
return true;
}
+static inline bool
+is_nxm_required(const struct cls_rule *rule, bool cookie_support,
+ ovs_be64 cookie)
+{
+ const struct flow_wildcards *wc = &rule->wc;
+ ovs_be32 cookie_hi;
+
+ /* Only NXM supports separately wildcards the Ethernet multicast bit. */
+ if (!(wc->wildcards & FWW_DL_DST) != !(wc->wildcards & FWW_ETH_MCAST)) {
+ return true;
+ }
+
+ /* Only NXM supports matching ARP hardware addresses. */
+ if (!(wc->wildcards & FWW_ARP_SHA) || !(wc->wildcards & FWW_ARP_THA)) {
+ return true;
+ }
+
+ /* Only NXM supports matching IPv6 traffic. */
+ if (!(wc->wildcards & FWW_DL_TYPE)
+ && (rule->flow.dl_type == htons(ETH_TYPE_IPV6))) {
+ return true;
+ }
+
+ /* Only NXM supports matching registers. */
+ if (!regs_fully_wildcarded(wc)) {
+ return true;
+ }
+
+ switch (wc->tun_id_mask) {
+ case CONSTANT_HTONLL(0):
+ /* Other formats can fully wildcard tun_id. */
+ break;
+
+ case CONSTANT_HTONLL(UINT64_MAX):
+ /* Only NXM supports matching tunnel ID, unless there is a cookie and
+ * the top 32 bits of the cookie are the desired tunnel ID value. */
+ cookie_hi = htonl(ntohll(cookie) >> 32);
+ if (!cookie_support
+ || (cookie_hi && cookie_hi != ntohll(rule->flow.tun_id))) {
+ return true;
+ }
+ break;
+
+ default:
+ /* Only NXM supports partial matches on tunnel ID. */
+ return true;
+ }
+
+ /* Other formats can express this rule. */
+ return false;
+}
+
/* Returns the minimum nx_flow_format to use for sending 'rule' to a switch
* (e.g. to add or remove a flow). 'cookie_support' should be true if the
* command to be sent includes a flow cookie (as OFPT_FLOW_MOD does, for
ofputil_min_flow_format(const struct cls_rule *rule, bool cookie_support,
ovs_be64 cookie)
{
- const struct flow_wildcards *wc = &rule->wc;
- ovs_be32 cookie_hi = htonl(ntohll(cookie) >> 32);
-
- if (!(wc->wildcards & FWW_DL_DST) != !(wc->wildcards & FWW_ETH_MCAST)
- || !regs_fully_wildcarded(wc)
- || (!(wc->wildcards & FWW_TUN_ID)
- && (!cookie_support
- || (cookie_hi && cookie_hi != ntohll(rule->flow.tun_id))))) {
+ if (is_nxm_required(rule, cookie_support, cookie)) {
return NXFF_NXM;
- } else if (!(wc->wildcards & FWW_TUN_ID)) {
+ } else if (rule->wc.tun_id_mask != htonll(0)) {
return NXFF_TUN_ID_FROM_COOKIE;
} else {
return NXFF_OPENFLOW10;
unsigned int required_len)
{
if (len != required_len) {
- VLOG_DBG_RL(&bad_ofmsg_rl,
- "action %u has invalid length %"PRIu16" (must be %u)\n",
- a->type, ntohs(a->header.len), required_len);
+ VLOG_WARN_RL(&bad_ofmsg_rl, "action %"PRIu16" has invalid length "
+ "%"PRIu16" (must be %u)\n",
+ ntohs(a->type), ntohs(a->header.len), required_len);
+ return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
+ }
+ return 0;
+}
+
+static int
+check_nx_action_exact_len(const struct nx_action_header *a,
+ unsigned int len, unsigned int required_len)
+{
+ if (len != required_len) {
+ VLOG_WARN_RL(&bad_ofmsg_rl,
+ "Nicira action %"PRIu16" has invalid length %"PRIu16" "
+ "(must be %u)\n",
+ ntohs(a->subtype), ntohs(a->len), required_len);
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
return 0;
int error;
if (len < 16) {
- VLOG_DBG_RL(&bad_ofmsg_rl,
- "Nicira vendor action only %u bytes", len);
+ VLOG_WARN_RL(&bad_ofmsg_rl,
+ "Nicira vendor action only %u bytes", len);
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
nah = (const struct nx_action_header *) a;
case NXAST_DROP_SPOOFED_ARP:
case NXAST_SET_QUEUE:
case NXAST_POP_QUEUE:
- return check_action_exact_len(a, len, 16);
+ return check_nx_action_exact_len(nah, len, 16);
case NXAST_REG_MOVE:
- error = check_action_exact_len(a, len,
- sizeof(struct nx_action_reg_move));
+ error = check_nx_action_exact_len(nah, len,
+ sizeof(struct nx_action_reg_move));
if (error) {
return error;
}
return nxm_check_reg_move((const struct nx_action_reg_move *) a, flow);
case NXAST_REG_LOAD:
- error = check_action_exact_len(a, len,
- sizeof(struct nx_action_reg_load));
+ error = check_nx_action_exact_len(nah, len,
+ sizeof(struct nx_action_reg_load));
if (error) {
return error;
}
return 0;
case NXAST_SET_TUNNEL64:
- return check_action_exact_len(a, len,
- sizeof(struct nx_action_set_tunnel64));
+ return check_nx_action_exact_len(
+ nah, len, sizeof(struct nx_action_set_tunnel64));
+
+ case NXAST_MULTIPATH:
+ error = check_nx_action_exact_len(
+ nah, len, sizeof(struct nx_action_multipath));
+ if (error) {
+ return error;
+ }
+ return multipath_check((const struct nx_action_multipath *) a);
case NXAST_SNAT__OBSOLETE:
default:
+ VLOG_WARN_RL(&bad_ofmsg_rl,
+ "unknown Nicira vendor action subtype %"PRIu16,
+ ntohs(nah->subtype));
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_VENDOR_TYPE);
}
}
int error;
if (n_slots > slots_left) {
- VLOG_DBG_RL(&bad_ofmsg_rl,
- "action requires %u slots but only %u remain",
- n_slots, slots_left);
+ VLOG_WARN_RL(&bad_ofmsg_rl,
+ "action requires %u slots but only %u remain",
+ n_slots, slots_left);
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
} else if (!len) {
- VLOG_DBG_RL(&bad_ofmsg_rl, "action has invalid length 0");
+ VLOG_WARN_RL(&bad_ofmsg_rl, "action has invalid length 0");
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
} else if (len % OFP_ACTION_ALIGN) {
- VLOG_DBG_RL(&bad_ofmsg_rl, "action length %u is not a multiple "
- "of %d", len, OFP_ACTION_ALIGN);
+ VLOG_WARN_RL(&bad_ofmsg_rl, "action length %u is not a multiple "
+ "of %d", len, OFP_ACTION_ALIGN);
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
}
m->nw_dst &= ofputil_wcbits_to_netmask(wc >> OFPFW_NW_DST_SHIFT);
}
m->tp_src = m->tp_dst = m->nw_tos = 0;
+ } else if (m->dl_type == htons(ETH_TYPE_IPV6)) {
+ /* Don't normalize IPv6 traffic, since OpenFlow doesn't have a
+ * way to express it. */
} else {
/* Network and transport layer fields will always be extracted as
* zeros, so we can do an exact-match on those values. */
}
}
+static int
+vendor_id_to_code(uint32_t id)
+{
+ switch (id) {
+#define OFPUTIL_VENDOR(NAME, VENDOR_ID) case VENDOR_ID: return NAME;
+ OFPUTIL_VENDORS
+#undef OFPUTIL_VENDOR
+ default:
+ return -1;
+ }
+}
+
/* Creates and returns an OpenFlow message of type OFPT_ERROR with the error
* information taken from 'error', whose encoding must be as described in the
* large comment in ofp-util.h. If 'oh' is nonnull, then the error will use
*
* Returns NULL if 'error' is not an OpenFlow error code. */
struct ofpbuf *
-make_ofp_error_msg(int error, const struct ofp_header *oh)
+ofputil_encode_error_msg(int error, const struct ofp_header *oh)
{
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
return buf;
}
+/* Decodes 'oh', which should be an OpenFlow OFPT_ERROR message, and returns an
+ * Open vSwitch internal error code in the format described in the large
+ * comment in ofp-util.h.
+ *
+ * If 'payload_ofs' is nonnull, on success '*payload_ofs' is set to the offset
+ * to the payload starting from 'oh' and on failure it is set to 0. */
+int
+ofputil_decode_error_msg(const struct ofp_header *oh, size_t *payload_ofs)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+ const struct ofp_error_msg *oem;
+ uint16_t type, code;
+ struct ofpbuf b;
+ int vendor;
+
+ if (payload_ofs) {
+ *payload_ofs = 0;
+ }
+ if (oh->type != OFPT_ERROR) {
+ return EPROTO;
+ }
+
+ ofpbuf_use_const(&b, oh, ntohs(oh->length));
+ oem = ofpbuf_try_pull(&b, sizeof *oem);
+ if (!oem) {
+ return EPROTO;
+ }
+
+ type = ntohs(oem->type);
+ code = ntohs(oem->code);
+ if (type == NXET_VENDOR && code == NXVC_VENDOR_ERROR) {
+ const struct nx_vendor_error *nve = ofpbuf_try_pull(&b, sizeof *nve);
+ if (!nve) {
+ return EPROTO;
+ }
+
+ vendor = vendor_id_to_code(ntohl(nve->vendor));
+ if (vendor < 0) {
+ VLOG_WARN_RL(&rl, "error contains unknown vendor ID %#"PRIx32,
+ ntohl(nve->vendor));
+ return EPROTO;
+ }
+ type = ntohs(nve->type);
+ code = ntohs(nve->code);
+ } else {
+ vendor = OFPUTIL_VENDOR_OPENFLOW;
+ }
+
+ if (type >= 1024) {
+ VLOG_WARN_RL(&rl, "error contains type %"PRIu16" greater than "
+ "supported maximum value 1023", type);
+ return EPROTO;
+ }
+
+ if (payload_ofs) {
+ *payload_ofs = (uint8_t *) b.data - (uint8_t *) oh;
+ }
+ return ofp_mkerr_vendor(vendor, type, code);
+}
+
+void
+ofputil_format_error(struct ds *s, int error)
+{
+ if (is_errno(error)) {
+ ds_put_cstr(s, strerror(error));
+ } else {
+ uint16_t type = get_ofp_err_type(error);
+ uint16_t code = get_ofp_err_code(error);
+ const char *type_s = ofp_error_type_to_string(type);
+ const char *code_s = ofp_error_code_to_string(type, code);
+
+ ds_put_format(s, "type ");
+ if (type_s) {
+ ds_put_cstr(s, type_s);
+ } else {
+ ds_put_format(s, "%"PRIu16, type);
+ }
+
+ ds_put_cstr(s, ", code ");
+ if (code_s) {
+ ds_put_cstr(s, code_s);
+ } else {
+ ds_put_format(s, "%"PRIu16, code);
+ }
+ }
+}
+
+char *
+ofputil_error_to_string(int error)
+{
+ struct ds s = DS_EMPTY_INITIALIZER;
+ ofputil_format_error(&s, error);
+ return ds_steal_cstr(&s);
+}
+
/* Attempts to pull 'actions_len' bytes from the front of 'b'. Returns 0 if
* successful, otherwise an OpenFlow error.
*
union ofp_action **actionsp, size_t *n_actionsp)
{
if (actions_len % OFP_ACTION_ALIGN != 0) {
- VLOG_DBG_RL(&bad_ofmsg_rl, "OpenFlow message actions length %u "
- "is not a multiple of %d", actions_len, OFP_ACTION_ALIGN);
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message actions length %u "
+ "is not a multiple of %d", actions_len, OFP_ACTION_ALIGN);
goto error;
}
*actionsp = ofpbuf_try_pull(b, actions_len);
if (*actionsp == NULL) {
- VLOG_DBG_RL(&bad_ofmsg_rl, "OpenFlow message actions length %u "
- "exceeds remaining message length (%zu)",
- actions_len, b->size);
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message actions length %u "
+ "exceeds remaining message length (%zu)",
+ actions_len, b->size);
goto error;
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff