X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fofp-util.c;h=2565ec7fffa06c671d21bb043a4e7f922b59f89b;hb=816fd533f85923c03cf8d9d6450bd9a0845d5160;hp=f87862f21962e58ddb5850124713aa6fee85e640;hpb=a9a2da38941ea4d312559543a3fb813d8fe7fd4e;p=sliver-openvswitch.git diff --git a/lib/ofp-util.c b/lib/ofp-util.c index f87862f21..2565ec7ff 100644 --- a/lib/ofp-util.c +++ b/lib/ofp-util.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks. + * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -18,6 +18,8 @@ #include "ofp-print.h" #include #include +#include +#include #include #include #include "autopath.h" @@ -25,7 +27,9 @@ #include "byte-order.h" #include "classifier.h" #include "dynamic-string.h" +#include "learn.h" #include "multipath.h" +#include "meta-flow.h" #include "nx-match.h" #include "ofp-errors.h" #include "ofp-util.h" @@ -59,22 +63,12 @@ ofputil_wcbits_to_netmask(int wcbits) } /* 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 @@ -108,16 +102,22 @@ static const flow_wildcards_t WC_INVARIANTS = 0 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); @@ -158,7 +158,7 @@ ofputil_cls_rule_from_match(const struct ofp_match *match, 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. */ @@ -197,7 +197,7 @@ ofputil_cls_rule_to_match(const struct cls_rule *rule, struct ofp_match *match) 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; } @@ -231,7 +231,7 @@ ofputil_cls_rule_to_match(const struct cls_rule *rule, struct ofp_match *match) 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; @@ -272,6 +272,7 @@ alloc_xid(void) struct ofputil_msg_type { enum ofputil_msg_code code; /* OFPUTIL_*. */ + uint8_t ofp_version; /* An OpenFlow version or 0 for "any". */ uint32_t value; /* OFPT_*, OFPST_*, NXT_*, or NXST_*. */ const char *name; /* e.g. "OFPT_FLOW_REMOVED". */ unsigned int min_size; /* Minimum total message size in bytes. */ @@ -280,63 +281,64 @@ struct ofputil_msg_type { unsigned int extra_multiple; }; +/* Represents a malformed OpenFlow message. */ +static const struct ofputil_msg_type ofputil_invalid_type = { + OFPUTIL_MSG_INVALID, 0, 0, "OFPUTIL_MSG_INVALID", 0, 0 +}; + struct ofputil_msg_category { const char *name; /* e.g. "OpenFlow message" */ const struct ofputil_msg_type *types; size_t n_types; - int missing_error; /* ofp_mkerr() value for missing type. */ + enum ofperr missing_error; /* Error 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 enum ofperr +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 OFPERR_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 OFPERR_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 OFPERR_OFPBRC_BAD_LEN; } - return true; + return 0; } } -static int +static enum ofperr ofputil_lookup_openflow_message(const struct ofputil_msg_category *cat, - uint32_t value, unsigned int size, + uint8_t version, 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); - } + if (type->value == value + && (!type->ofp_version || version == type->ofp_version)) { *typep = type; return 0; } @@ -347,98 +349,122 @@ ofputil_lookup_openflow_message(const struct ofputil_msg_category *cat, return cat->missing_error; } -static int -ofputil_decode_vendor(const struct ofp_header *oh, +static enum ofperr +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, + { OFPUTIL_NXT_ROLE_REQUEST, OFP10_VERSION, NXT_ROLE_REQUEST, "NXT_ROLE_REQUEST", sizeof(struct nx_role_request), 0 }, - { OFPUTIL_NXT_ROLE_REPLY, + { OFPUTIL_NXT_ROLE_REPLY, OFP10_VERSION, NXT_ROLE_REPLY, "NXT_ROLE_REPLY", sizeof(struct nx_role_request), 0 }, - { OFPUTIL_NXT_SET_FLOW_FORMAT, + { OFPUTIL_NXT_SET_FLOW_FORMAT, OFP10_VERSION, NXT_SET_FLOW_FORMAT, "NXT_SET_FLOW_FORMAT", - sizeof(struct nxt_set_flow_format), 0 }, + sizeof(struct nx_set_flow_format), 0 }, + + { OFPUTIL_NXT_SET_PACKET_IN_FORMAT, OFP10_VERSION, + NXT_SET_PACKET_IN_FORMAT, "NXT_SET_PACKET_IN_FORMAT", + sizeof(struct nx_set_packet_in_format), 0 }, + + { OFPUTIL_NXT_PACKET_IN, OFP10_VERSION, + NXT_PACKET_IN, "NXT_PACKET_IN", + sizeof(struct nx_packet_in), 1 }, - { OFPUTIL_NXT_FLOW_MOD, + { OFPUTIL_NXT_FLOW_MOD, OFP10_VERSION, NXT_FLOW_MOD, "NXT_FLOW_MOD", sizeof(struct nx_flow_mod), 8 }, - { OFPUTIL_NXT_FLOW_REMOVED, + { OFPUTIL_NXT_FLOW_REMOVED, OFP10_VERSION, NXT_FLOW_REMOVED, "NXT_FLOW_REMOVED", sizeof(struct nx_flow_removed), 8 }, - { OFPUTIL_NXT_FLOW_MOD_TABLE_ID, + { OFPUTIL_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, NXT_FLOW_MOD_TABLE_ID, "NXT_FLOW_MOD_TABLE_ID", - sizeof(struct nxt_flow_mod_table_id), 0 }, + sizeof(struct nx_flow_mod_table_id), 0 }, }; static const struct ofputil_msg_category nxt_category = { "Nicira extension message", nxt_messages, ARRAY_SIZE(nxt_messages), - OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE) + OFPERR_OFPBRC_BAD_SUBTYPE }; 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 OFPERR_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 " "vendor %"PRIx32, ntohl(ovh->vendor)); - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR); + return OFPERR_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)); - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); + 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 OFPERR_OFPBRC_BAD_LEN; } nh = (const struct nicira_header *) oh; - return ofputil_lookup_openflow_message(&nxt_category, ntohl(nh->subtype), - ntohs(oh->length), typep); + return ofputil_lookup_openflow_message(&nxt_category, oh->version, + ntohl(nh->subtype), typep); } -static int -check_nxstats_msg(const struct ofp_header *oh) +static enum ofperr +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 OFPERR_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 " "unknown vendor %"PRIx32, ntohl(vendor)); - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR); + return OFPERR_OFPBRC_BAD_VENDOR; } - if (ntohs(osm->header.length) < sizeof(struct nicira_stats_msg)) { - VLOG_WARN_RL(&bad_ofmsg_rl, "truncated Nicira stats message"); - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); + if (length < sizeof(struct nicira_stats_msg)) { + if (length == ntohs(osm->header.length)) { + VLOG_WARN_RL(&bad_ofmsg_rl, "truncated Nicira stats message"); + } + return OFPERR_OFPBRC_BAD_LEN; } return 0; } -static int -ofputil_decode_nxst_request(const struct ofp_header *oh, +static enum ofperr +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[] = { - { OFPUTIL_NXST_FLOW_REQUEST, + { OFPUTIL_NXST_FLOW_REQUEST, OFP10_VERSION, NXST_FLOW, "NXST_FLOW request", sizeof(struct nx_flow_stats_request), 8 }, - { OFPUTIL_NXST_AGGREGATE_REQUEST, + { OFPUTIL_NXST_AGGREGATE_REQUEST, OFP10_VERSION, NXST_AGGREGATE, "NXST_AGGREGATE request", sizeof(struct nx_aggregate_stats_request), 8 }, }; @@ -446,33 +472,32 @@ ofputil_decode_nxst_request(const struct ofp_header *oh, static const struct ofputil_msg_category nxst_request_category = { "Nicira extension statistics request", nxst_requests, ARRAY_SIZE(nxst_requests), - OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE) + OFPERR_OFPBRC_BAD_SUBTYPE }; const struct nicira_stats_msg *nsm; - int error; + enum ofperr 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); + return ofputil_lookup_openflow_message(&nxst_request_category, oh->version, + ntohl(nsm->subtype), typep); } -static int -ofputil_decode_nxst_reply(const struct ofp_header *oh, +static enum ofperr +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[] = { - { OFPUTIL_NXST_FLOW_REPLY, + { OFPUTIL_NXST_FLOW_REPLY, OFP10_VERSION, NXST_FLOW, "NXST_FLOW reply", sizeof(struct nicira_stats_msg), 8 }, - { OFPUTIL_NXST_AGGREGATE_REPLY, + { OFPUTIL_NXST_AGGREGATE_REPLY, OFP10_VERSION, NXST_AGGREGATE, "NXST_AGGREGATE reply", sizeof(struct nx_aggregate_stats_reply), 0 }, }; @@ -480,53 +505,65 @@ ofputil_decode_nxst_reply(const struct ofp_header *oh, static const struct ofputil_msg_category nxst_reply_category = { "Nicira extension statistics reply", nxst_replies, ARRAY_SIZE(nxst_replies), - OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE) + OFPERR_OFPBRC_BAD_SUBTYPE }; const struct nicira_stats_msg *nsm; - int error; + enum ofperr 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); + return ofputil_lookup_openflow_message(&nxst_reply_category, oh->version, + ntohl(nsm->subtype), typep); +} + +static enum ofperr +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 OFPERR_OFPBRC_BAD_LEN; + } + + return 0; } -static int -ofputil_decode_ofpst_request(const struct ofp_header *oh, +static enum ofperr +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[] = { - { OFPUTIL_OFPST_DESC_REQUEST, + { OFPUTIL_OFPST_DESC_REQUEST, OFP10_VERSION, OFPST_DESC, "OFPST_DESC request", sizeof(struct ofp_stats_msg), 0 }, - { OFPUTIL_OFPST_FLOW_REQUEST, + { OFPUTIL_OFPST_FLOW_REQUEST, OFP10_VERSION, OFPST_FLOW, "OFPST_FLOW request", sizeof(struct ofp_flow_stats_request), 0 }, - { OFPUTIL_OFPST_AGGREGATE_REQUEST, + { OFPUTIL_OFPST_AGGREGATE_REQUEST, OFP10_VERSION, OFPST_AGGREGATE, "OFPST_AGGREGATE request", sizeof(struct ofp_flow_stats_request), 0 }, - { OFPUTIL_OFPST_TABLE_REQUEST, + { OFPUTIL_OFPST_TABLE_REQUEST, OFP10_VERSION, OFPST_TABLE, "OFPST_TABLE request", sizeof(struct ofp_stats_msg), 0 }, - { OFPUTIL_OFPST_PORT_REQUEST, + { OFPUTIL_OFPST_PORT_REQUEST, OFP10_VERSION, OFPST_PORT, "OFPST_PORT request", sizeof(struct ofp_port_stats_request), 0 }, - { OFPUTIL_OFPST_QUEUE_REQUEST, + { OFPUTIL_OFPST_QUEUE_REQUEST, OFP10_VERSION, OFPST_QUEUE, "OFPST_QUEUE request", sizeof(struct ofp_queue_stats_request), 0 }, - { 0, + { 0, 0, OFPST_VENDOR, "OFPST_VENDOR request", sizeof(struct ofp_vendor_stats_msg), 1 }, }; @@ -534,51 +571,56 @@ ofputil_decode_ofpst_request(const struct ofp_header *oh, static const struct ofputil_msg_category ofpst_request_category = { "OpenFlow statistics", ofpst_requests, ARRAY_SIZE(ofpst_requests), - OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT) + OFPERR_OFPBRC_BAD_STAT }; const struct ofp_stats_msg *request = (const struct ofp_stats_msg *) oh; - int error; + enum ofperr 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); + oh->version, 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, +static enum ofperr +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[] = { - { OFPUTIL_OFPST_DESC_REPLY, + { OFPUTIL_OFPST_DESC_REPLY, OFP10_VERSION, OFPST_DESC, "OFPST_DESC reply", sizeof(struct ofp_desc_stats), 0 }, - { OFPUTIL_OFPST_FLOW_REPLY, + { OFPUTIL_OFPST_FLOW_REPLY, OFP10_VERSION, OFPST_FLOW, "OFPST_FLOW reply", sizeof(struct ofp_stats_msg), 1 }, - { OFPUTIL_OFPST_AGGREGATE_REPLY, + { OFPUTIL_OFPST_AGGREGATE_REPLY, OFP10_VERSION, OFPST_AGGREGATE, "OFPST_AGGREGATE reply", sizeof(struct ofp_aggregate_stats_reply), 0 }, - { OFPUTIL_OFPST_TABLE_REPLY, + { OFPUTIL_OFPST_TABLE_REPLY, OFP10_VERSION, OFPST_TABLE, "OFPST_TABLE reply", sizeof(struct ofp_stats_msg), sizeof(struct ofp_table_stats) }, - { OFPUTIL_OFPST_PORT_REPLY, + { OFPUTIL_OFPST_PORT_REPLY, OFP10_VERSION, OFPST_PORT, "OFPST_PORT reply", sizeof(struct ofp_stats_msg), sizeof(struct ofp_port_stats) }, - { OFPUTIL_OFPST_QUEUE_REPLY, + { OFPUTIL_OFPST_QUEUE_REPLY, OFP10_VERSION, OFPST_QUEUE, "OFPST_QUEUE reply", sizeof(struct ofp_stats_msg), sizeof(struct ofp_queue_stats) }, - { 0, + { 0, 0, OFPST_VENDOR, "OFPST_VENDOR reply", sizeof(struct ofp_vendor_stats_msg), 1 }, }; @@ -586,113 +628,107 @@ ofputil_decode_ofpst_reply(const struct ofp_header *oh, static const struct ofputil_msg_category ofpst_reply_category = { "OpenFlow statistics", ofpst_replies, ARRAY_SIZE(ofpst_replies), - OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT) + OFPERR_OFPBRC_BAD_STAT }; const struct ofp_stats_msg *reply = (const struct ofp_stats_msg *) oh; - int error; + enum ofperr 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); + error = ofputil_lookup_openflow_message(&ofpst_reply_category, oh->version, + 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 enum ofperr +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, + { OFPUTIL_OFPT_HELLO, OFP10_VERSION, OFPT_HELLO, "OFPT_HELLO", sizeof(struct ofp_hello), 1 }, - { OFPUTIL_OFPT_ERROR, + { OFPUTIL_OFPT_ERROR, 0, OFPT_ERROR, "OFPT_ERROR", sizeof(struct ofp_error_msg), 1 }, - { OFPUTIL_OFPT_ECHO_REQUEST, + { OFPUTIL_OFPT_ECHO_REQUEST, OFP10_VERSION, OFPT_ECHO_REQUEST, "OFPT_ECHO_REQUEST", sizeof(struct ofp_header), 1 }, - { OFPUTIL_OFPT_ECHO_REPLY, + { OFPUTIL_OFPT_ECHO_REPLY, OFP10_VERSION, OFPT_ECHO_REPLY, "OFPT_ECHO_REPLY", sizeof(struct ofp_header), 1 }, - { OFPUTIL_OFPT_FEATURES_REQUEST, + { OFPUTIL_OFPT_FEATURES_REQUEST, OFP10_VERSION, OFPT_FEATURES_REQUEST, "OFPT_FEATURES_REQUEST", sizeof(struct ofp_header), 0 }, - { OFPUTIL_OFPT_FEATURES_REPLY, + { OFPUTIL_OFPT_FEATURES_REPLY, OFP10_VERSION, OFPT_FEATURES_REPLY, "OFPT_FEATURES_REPLY", sizeof(struct ofp_switch_features), sizeof(struct ofp_phy_port) }, - { OFPUTIL_OFPT_GET_CONFIG_REQUEST, + { OFPUTIL_OFPT_GET_CONFIG_REQUEST, OFP10_VERSION, OFPT_GET_CONFIG_REQUEST, "OFPT_GET_CONFIG_REQUEST", sizeof(struct ofp_header), 0 }, - { OFPUTIL_OFPT_GET_CONFIG_REPLY, + { OFPUTIL_OFPT_GET_CONFIG_REPLY, OFP10_VERSION, OFPT_GET_CONFIG_REPLY, "OFPT_GET_CONFIG_REPLY", sizeof(struct ofp_switch_config), 0 }, - { OFPUTIL_OFPT_SET_CONFIG, + { OFPUTIL_OFPT_SET_CONFIG, OFP10_VERSION, OFPT_SET_CONFIG, "OFPT_SET_CONFIG", sizeof(struct ofp_switch_config), 0 }, - { OFPUTIL_OFPT_PACKET_IN, + { OFPUTIL_OFPT_PACKET_IN, OFP10_VERSION, OFPT_PACKET_IN, "OFPT_PACKET_IN", offsetof(struct ofp_packet_in, data), 1 }, - { OFPUTIL_OFPT_FLOW_REMOVED, + { OFPUTIL_OFPT_FLOW_REMOVED, OFP10_VERSION, OFPT_FLOW_REMOVED, "OFPT_FLOW_REMOVED", sizeof(struct ofp_flow_removed), 0 }, - { OFPUTIL_OFPT_PORT_STATUS, + { OFPUTIL_OFPT_PORT_STATUS, OFP10_VERSION, OFPT_PORT_STATUS, "OFPT_PORT_STATUS", sizeof(struct ofp_port_status), 0 }, - { OFPUTIL_OFPT_PACKET_OUT, + { OFPUTIL_OFPT_PACKET_OUT, OFP10_VERSION, OFPT_PACKET_OUT, "OFPT_PACKET_OUT", sizeof(struct ofp_packet_out), 1 }, - { OFPUTIL_OFPT_FLOW_MOD, + { OFPUTIL_OFPT_FLOW_MOD, OFP10_VERSION, OFPT_FLOW_MOD, "OFPT_FLOW_MOD", sizeof(struct ofp_flow_mod), 1 }, - { OFPUTIL_OFPT_PORT_MOD, + { OFPUTIL_OFPT_PORT_MOD, OFP10_VERSION, OFPT_PORT_MOD, "OFPT_PORT_MOD", sizeof(struct ofp_port_mod), 0 }, - { 0, + { 0, OFP10_VERSION, OFPT_STATS_REQUEST, "OFPT_STATS_REQUEST", sizeof(struct ofp_stats_msg), 1 }, - { 0, + { 0, OFP10_VERSION, OFPT_STATS_REPLY, "OFPT_STATS_REPLY", sizeof(struct ofp_stats_msg), 1 }, - { OFPUTIL_OFPT_BARRIER_REQUEST, + { OFPUTIL_OFPT_BARRIER_REQUEST, OFP10_VERSION, OFPT_BARRIER_REQUEST, "OFPT_BARRIER_REQUEST", sizeof(struct ofp_header), 0 }, - { OFPUTIL_OFPT_BARRIER_REPLY, + { OFPUTIL_OFPT_BARRIER_REPLY, OFP10_VERSION, OFPT_BARRIER_REPLY, "OFPT_BARRIER_REPLY", sizeof(struct ofp_header), 0 }, - { 0, + { 0, 0, OFPT_VENDOR, "OFPT_VENDOR", sizeof(struct ofp_vendor_header), 1 }, }; @@ -700,37 +736,73 @@ ofputil_decode_msg_type(const struct ofp_header *oh, static const struct ofputil_msg_category ofpt_category = { "OpenFlow message", ofpt_messages, ARRAY_SIZE(ofpt_messages), - OFP_MKERR(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE) + OFPERR_OFPBRC_BAD_TYPE }; - int error; + enum ofperr error; - error = ofputil_lookup_openflow_message(&ofpt_category, oh->type, - ntohs(oh->length), typep); + error = ofputil_lookup_openflow_message(&ofpt_category, oh->version, + 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 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. */ +enum ofperr +ofputil_decode_msg_type(const struct ofp_header *oh, + const struct ofputil_msg_type **typep) +{ + size_t length = ntohs(oh->length); + enum ofperr 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 on failure. Either way, stores in '*typep' a type structure that can + * be inspected with the ofputil_msg_type_*() functions. */ +enum ofperr +ofputil_decode_msg_type_partial(const struct ofp_header *oh, size_t length, + const struct ofputil_msg_type **typep) +{ + enum ofperr error; + + error = (length >= sizeof *oh + ? ofputil_decode_msg_type__(oh, length, typep) + : OFPERR_OFPBRC_BAD_LEN); + if (error) { *typep = &ofputil_invalid_type; } return error; @@ -778,6 +850,39 @@ ofputil_flow_format_from_string(const char *s) : -1); } +bool +ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format) +{ + switch (packet_in_format) { + case NXPIF_OPENFLOW10: + case NXPIF_NXM: + return true; + } + + return false; +} + +const char * +ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format) +{ + switch (packet_in_format) { + case NXPIF_OPENFLOW10: + return "openflow10"; + case NXPIF_NXM: + return "nxm"; + default: + NOT_REACHED(); + } +} + +int +ofputil_packet_in_format_from_string(const char *s) +{ + return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10 + : !strcmp(s, "nxm") ? NXPIF_NXM + : -1); +} + static bool regs_fully_wildcarded(const struct flow_wildcards *wc) { @@ -800,6 +905,8 @@ ofputil_min_flow_format(const struct cls_rule *rule) { 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; @@ -826,6 +933,26 @@ ofputil_min_flow_format(const struct cls_rule *rule) 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; } @@ -835,7 +962,7 @@ ofputil_min_flow_format(const struct cls_rule *rule) struct ofpbuf * ofputil_make_set_flow_format(enum nx_flow_format flow_format) { - struct nxt_set_flow_format *sff; + struct nx_set_flow_format *sff; struct ofpbuf *msg; sff = make_nxmsg(sizeof *sff, NXT_SET_FLOW_FORMAT, &msg); @@ -844,12 +971,24 @@ ofputil_make_set_flow_format(enum nx_flow_format flow_format) return msg; } +struct ofpbuf * +ofputil_make_set_packet_in_format(enum nx_packet_in_format packet_in_format) +{ + struct nx_set_packet_in_format *spif; + struct ofpbuf *msg; + + spif = make_nxmsg(sizeof *spif, NXT_SET_PACKET_IN_FORMAT, &msg); + spif->format = htonl(packet_in_format); + + return msg; +} + /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id * extension on or off (according to 'flow_mod_table_id'). */ struct ofpbuf * ofputil_make_flow_mod_table_id(bool flow_mod_table_id) { - struct nxt_flow_mod_table_id *nfmti; + struct nx_flow_mod_table_id *nfmti; struct ofpbuf *msg; nfmti = make_nxmsg(sizeof *nfmti, NXT_FLOW_MOD_TABLE_ID, &msg); @@ -865,7 +1004,7 @@ ofputil_make_flow_mod_table_id(bool flow_mod_table_id) * enabled, false otherwise. * * Does not validate the flow_mod actions. */ -int +enum ofperr ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, const struct ofp_header *oh, bool flow_mod_table_id) { @@ -880,7 +1019,7 @@ ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, /* Standard OpenFlow flow_mod. */ const struct ofp_flow_mod *ofm; uint16_t priority; - int error; + enum ofperr error; /* Dissect the message. */ ofm = ofpbuf_pull(&b, sizeof *ofm); @@ -904,6 +1043,7 @@ ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, /* Translate the message. */ fm->cookie = ofm->cookie; + fm->cookie_mask = htonll(UINT64_MAX); command = ntohs(ofm->command); fm->idle_timeout = ntohs(ofm->idle_timeout); fm->hard_timeout = ntohs(ofm->hard_timeout); @@ -913,12 +1053,12 @@ ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, } else if (ofputil_msg_type_code(type) == OFPUTIL_NXT_FLOW_MOD) { /* Nicira extended flow_mod. */ const struct nx_flow_mod *nfm; - int error; + enum ofperr error; /* Dissect the message. */ nfm = ofpbuf_pull(&b, sizeof *nfm); error = nx_pull_match(&b, ntohs(nfm->match_len), ntohs(nfm->priority), - &fm->cr); + &fm->cr, &fm->cookie, &fm->cookie_mask); if (error) { return error; } @@ -928,8 +1068,18 @@ ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, } /* Translate the message. */ - fm->cookie = nfm->cookie; command = ntohs(nfm->command); + if (command == OFPFC_ADD) { + if (fm->cookie_mask) { + /* The "NXM_NX_COOKIE*" matches are not valid for flow + * additions. Additions must use the "cookie" field of + * the "nx_flow_mod" structure. */ + return OFPERR_NXBRC_NXM_INVALID; + } else { + fm->cookie = nfm->cookie; + fm->cookie_mask = htonll(UINT64_MAX); + } + } fm->idle_timeout = ntohs(nfm->idle_timeout); fm->hard_timeout = ntohs(nfm->hard_timeout); fm->buffer_id = ntohl(nfm->buffer_id); @@ -988,11 +1138,16 @@ ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, msg = ofpbuf_new(sizeof *nfm + NXM_TYPICAL_LEN + actions_len); put_nxmsg(sizeof *nfm, NXT_FLOW_MOD, msg); - match_len = nx_put_match(msg, &fm->cr); - nfm = msg->data; - nfm->cookie = fm->cookie; nfm->command = htons(command); + if (command == OFPFC_ADD) { + nfm->cookie = fm->cookie; + match_len = nx_put_match(msg, &fm->cr, 0, 0); + } else { + nfm->cookie = 0; + match_len = nx_put_match(msg, &fm->cr, + fm->cookie, fm->cookie_mask); + } nfm->idle_timeout = htons(fm->idle_timeout); nfm->hard_timeout = htons(fm->hard_timeout); nfm->priority = htons(fm->cr.priority); @@ -1009,8 +1164,8 @@ ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, return msg; } -static int -ofputil_decode_ofpst_flow_request(struct flow_stats_request *fsr, +static enum ofperr +ofputil_decode_ofpst_flow_request(struct ofputil_flow_stats_request *fsr, const struct ofp_header *oh, bool aggregate) { @@ -1021,28 +1176,30 @@ ofputil_decode_ofpst_flow_request(struct flow_stats_request *fsr, ofputil_cls_rule_from_match(&ofsr->match, 0, &fsr->match); fsr->out_port = ntohs(ofsr->out_port); fsr->table_id = ofsr->table_id; + fsr->cookie = fsr->cookie_mask = htonll(0); return 0; } -static int -ofputil_decode_nxst_flow_request(struct flow_stats_request *fsr, +static enum ofperr +ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr, const struct ofp_header *oh, bool aggregate) { const struct nx_flow_stats_request *nfsr; struct ofpbuf b; - int error; + enum ofperr error; ofpbuf_use_const(&b, oh, ntohs(oh->length)); nfsr = ofpbuf_pull(&b, sizeof *nfsr); - error = nx_pull_match(&b, ntohs(nfsr->match_len), 0, &fsr->match); + error = nx_pull_match(&b, ntohs(nfsr->match_len), 0, &fsr->match, + &fsr->cookie, &fsr->cookie_mask); if (error) { return error; } if (b.size) { - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); + return OFPERR_OFPBRC_BAD_LEN; } fsr->aggregate = aggregate; @@ -1055,8 +1212,8 @@ ofputil_decode_nxst_flow_request(struct flow_stats_request *fsr, /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_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, +enum ofperr +ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr, const struct ofp_header *oh) { const struct ofputil_msg_type *type; @@ -1090,7 +1247,7 @@ ofputil_decode_flow_stats_request(struct flow_stats_request *fsr, * 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; @@ -1111,7 +1268,8 @@ ofputil_encode_flow_stats_request(const struct flow_stats_request *fsr, subtype = fsr->aggregate ? NXST_AGGREGATE : NXST_FLOW; ofputil_make_stats_request(sizeof *nfsr, OFPST_VENDOR, subtype, &msg); - match_len = nx_put_match(msg, &fsr->match); + match_len = nx_put_match(msg, &fsr->match, + fsr->cookie, fsr->cookie_mask); nfsr = msg->data; nfsr->out_port = htons(fsr->out_port); @@ -1207,7 +1365,8 @@ ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs, "claims invalid length %zu", match_len, length); return EINVAL; } - if (nx_pull_match(msg, match_len, ntohs(nfs->priority), &fs->rule)) { + if (nx_pull_match(msg, match_len, ntohs(nfs->priority), &fs->rule, + NULL, NULL)) { return EINVAL; } @@ -1291,7 +1450,7 @@ ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs, nfs->priority = htons(fs->rule.priority); nfs->idle_timeout = htons(fs->idle_timeout); nfs->hard_timeout = htons(fs->hard_timeout); - nfs->match_len = htons(nx_put_match(msg, &fs->rule)); + nfs->match_len = htons(nx_put_match(msg, &fs->rule, 0, 0)); memset(nfs->pad2, 0, sizeof nfs->pad2); nfs->cookie = fs->cookie; nfs->packet_count = htonll(fs->packet_count); @@ -1339,7 +1498,7 @@ ofputil_encode_aggregate_stats_reply( /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise * an OpenFlow error code. */ -int +enum ofperr ofputil_decode_flow_removed(struct ofputil_flow_removed *fr, const struct ofp_header *oh) { @@ -1370,12 +1529,12 @@ ofputil_decode_flow_removed(struct ofputil_flow_removed *fr, nfr = ofpbuf_pull(&b, sizeof *nfr); error = nx_pull_match(&b, ntohs(nfr->match_len), ntohs(nfr->priority), - &fr->rule); + &fr->rule, NULL, NULL); if (error) { return error; } if (b.size) { - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); + return OFPERR_OFPBRC_BAD_LEN; } fr->cookie = nfr->cookie; @@ -1420,7 +1579,7 @@ ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, int match_len; make_nxmsg_xid(sizeof *nfr, NXT_FLOW_REMOVED, htonl(0), &msg); - match_len = nx_put_match(msg, &fr->rule); + match_len = nx_put_match(msg, &fr->rule, 0, 0); nfr = msg->data; nfr->cookie = fr->cookie; @@ -1439,47 +1598,141 @@ ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, return msg; } -/* Converts abstract ofputil_packet_in 'pin' into an OFPT_PACKET_IN message - * and returns the message. - * - * If 'rw_packet' is NULL, the caller takes ownership of the newly allocated - * returned ofpbuf. - * - * If 'rw_packet' is nonnull, then it must contain the same data as - * pin->packet. 'rw_packet' is allowed to be the same ofpbuf as pin->packet. - * It is modified in-place into an OFPT_PACKET_IN message according to 'pin', - * and then ofputil_encode_packet_in() returns 'rw_packet'. If 'rw_packet' has - * enough headroom to insert a "struct ofp_packet_in", this is more efficient - * than ofputil_encode_packet_in() because it does not copy the packet - * payload. */ -struct ofpbuf * -ofputil_encode_packet_in(const struct ofputil_packet_in *pin, - struct ofpbuf *rw_packet) +int +ofputil_decode_packet_in(struct ofputil_packet_in *pin, + const struct ofp_header *oh) { - int total_len = pin->packet->size; - struct ofp_packet_in *opi; + const struct ofputil_msg_type *type; + enum ofputil_msg_code code; + + ofputil_decode_msg_type(oh, &type); + code = ofputil_msg_type_code(type); + memset(pin, 0, sizeof *pin); + + if (code == OFPUTIL_OFPT_PACKET_IN) { + const struct ofp_packet_in *opi = (const struct ofp_packet_in *) oh; + + pin->packet = opi->data; + pin->packet_len = ntohs(opi->header.length) + - offsetof(struct ofp_packet_in, data); + + pin->fmd.in_port = ntohs(opi->in_port); + pin->reason = opi->reason; + pin->buffer_id = ntohl(opi->buffer_id); + pin->total_len = ntohs(opi->total_len); + } else if (code == OFPUTIL_NXT_PACKET_IN) { + const struct nx_packet_in *npi; + struct cls_rule rule; + struct ofpbuf b; + int error; - if (rw_packet) { - if (pin->send_len < rw_packet->size) { - rw_packet->size = pin->send_len; + ofpbuf_use_const(&b, oh, ntohs(oh->length)); + + npi = ofpbuf_pull(&b, sizeof *npi); + error = nx_pull_match_loose(&b, ntohs(npi->match_len), 0, &rule, NULL, + NULL); + if (error) { + return error; + } + + if (!ofpbuf_try_pull(&b, 2)) { + return OFPERR_OFPBRC_BAD_LEN; } + + pin->packet = b.data; + pin->packet_len = b.size; + pin->reason = npi->reason; + pin->table_id = npi->table_id; + pin->cookie = npi->cookie; + + pin->fmd.in_port = rule.flow.in_port; + + pin->fmd.tun_id = rule.flow.tun_id; + pin->fmd.tun_id_mask = rule.wc.tun_id_mask; + + memcpy(pin->fmd.regs, rule.flow.regs, sizeof pin->fmd.regs); + memcpy(pin->fmd.reg_masks, rule.wc.reg_masks, + sizeof pin->fmd.reg_masks); + + pin->buffer_id = ntohl(npi->buffer_id); + pin->total_len = ntohs(npi->total_len); } else { - rw_packet = ofpbuf_clone_data_with_headroom( - pin->packet->data, MIN(pin->send_len, pin->packet->size), - offsetof(struct ofp_packet_in, data)); + NOT_REACHED(); } + return 0; +} + +/* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message + * in the format specified by 'packet_in_format'. */ +struct ofpbuf * +ofputil_encode_packet_in(const struct ofputil_packet_in *pin, + enum nx_packet_in_format packet_in_format) +{ + size_t send_len = MIN(pin->send_len, pin->packet_len); + struct ofpbuf *packet; + /* 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); - update_openflow_length(rw_packet); + if (packet_in_format == NXPIF_OPENFLOW10) { + size_t header_len = offsetof(struct ofp_packet_in, data); + struct ofp_packet_in *opi; + + packet = ofpbuf_new(send_len + header_len); + opi = ofpbuf_put_zeros(packet, header_len); + opi->header.version = OFP_VERSION; + opi->header.type = OFPT_PACKET_IN; + opi->total_len = htons(pin->total_len); + opi->in_port = htons(pin->fmd.in_port); + opi->reason = pin->reason; + opi->buffer_id = htonl(pin->buffer_id); + + ofpbuf_put(packet, pin->packet, send_len); + } else if (packet_in_format == NXPIF_NXM) { + struct nx_packet_in *npi; + struct cls_rule rule; + size_t match_len; + size_t i; + + /* Estimate of required PACKET_IN length includes the NPI header, space + * for the match (2 times sizeof the metadata seems like enough), 2 + * bytes for padding, and the packet length. */ + packet = ofpbuf_new(sizeof *npi + sizeof(struct flow_metadata) * 2 + + 2 + send_len); + + cls_rule_init_catchall(&rule, 0); + cls_rule_set_tun_id_masked(&rule, pin->fmd.tun_id, + pin->fmd.tun_id_mask); + + for (i = 0; i < FLOW_N_REGS; i++) { + cls_rule_set_reg_masked(&rule, i, pin->fmd.regs[i], + pin->fmd.reg_masks[i]); + } - return rw_packet; + cls_rule_set_in_port(&rule, pin->fmd.in_port); + + ofpbuf_put_zeros(packet, sizeof *npi); + match_len = nx_put_match(packet, &rule, 0, 0); + ofpbuf_put_zeros(packet, 2); + ofpbuf_put(packet, pin->packet, send_len); + + npi = packet->data; + npi->nxh.header.version = OFP_VERSION; + npi->nxh.header.type = OFPT_VENDOR; + npi->nxh.vendor = htonl(NX_VENDOR_ID); + npi->nxh.subtype = htonl(NXT_PACKET_IN); + + npi->buffer_id = htonl(pin->buffer_id); + npi->total_len = htons(pin->total_len); + npi->reason = pin->reason; + npi->table_id = pin->table_id; + npi->cookie = pin->cookie; + npi->match_len = htons(match_len); + } else { + NOT_REACHED(); + } + update_openflow_length(packet); + + return packet; } /* Returns a string representing the message type of 'type'. The string is the @@ -1831,10 +2084,7 @@ make_add_simple_flow(const struct cls_rule *rule, 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); @@ -1879,7 +2129,7 @@ make_packet_out(const struct ofpbuf *packet, uint32_t buffer_id, 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) { @@ -1942,10 +2192,40 @@ make_echo_reply(const struct ofp_header *rq) 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. */ -int + * 'port' is valid, otherwise an OpenFlow return code. */ +enum ofperr ofputil_check_output_port(uint16_t port, int max_ports) { switch (port) { @@ -1962,20 +2242,99 @@ ofputil_check_output_port(uint16_t port, int max_ports) if (port < max_ports) { return 0; } - return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_OUT_PORT); + return OFPERR_OFPBAC_BAD_OUT_PORT; + } +} + +#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 +static enum ofperr 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 OFPERR_OFPBAC_BAD_ARGUMENT; } return 0; } -int +static enum ofperr +check_output_reg(const struct nx_action_output_reg *naor, + const struct flow *flow) +{ + struct mf_subfield src; + size_t i; + + for (i = 0; i < sizeof naor->zero; i++) { + if (naor->zero[i]) { + return OFPERR_OFPBAC_BAD_ARGUMENT; + } + } + + nxm_decode(&src, naor->src, naor->ofs_nbits); + return mf_check_src(&src, flow); +} + +enum ofperr validate_actions(const union ofp_action *actions, size_t n_actions, const struct flow *flow, int max_ports) { @@ -1983,20 +2342,16 @@ validate_actions(const union ofp_action *actions, size_t n_actions, size_t left; OFPUTIL_ACTION_FOR_EACH (a, left, actions, n_actions) { + enum ofperr error; uint16_t port; - int error; int code; code = ofputil_decode_action(a); if (code < 0) { - char *msg; - error = -code; - msg = ofputil_error_to_string(error); VLOG_WARN_RL(&bad_ofmsg_rl, "action decoding error at offset %td (%s)", - (a - actions) * sizeof *a, msg); - free(msg); + (a - actions) * sizeof *a, ofperr_get_name(error)); return error; } @@ -2010,20 +2365,21 @@ validate_actions(const union ofp_action *actions, size_t n_actions, case OFPUTIL_OFPAT_SET_VLAN_VID: if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { - error = ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT); + error = OFPERR_OFPBAC_BAD_ARGUMENT; } break; case OFPUTIL_OFPAT_SET_VLAN_PCP: if (a->vlan_pcp.vlan_pcp & ~7) { - error = ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT); + error = OFPERR_OFPBAC_BAD_ARGUMENT; } break; case OFPUTIL_OFPAT_ENQUEUE: port = ntohs(((const struct ofp_action_enqueue *) a)->port); - if (port >= max_ports && port != OFPP_IN_PORT) { - error = ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_OUT_PORT); + if (port >= max_ports && port != OFPP_IN_PORT + && port != OFPP_LOCAL) { + error = OFPERR_OFPBAC_BAD_OUT_PORT; } break; @@ -2053,11 +2409,20 @@ validate_actions(const union ofp_action *actions, size_t n_actions, 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_OFPAT_SET_NW_SRC: case OFPUTIL_OFPAT_SET_NW_DST: @@ -2072,21 +2437,21 @@ validate_actions(const union ofp_action *actions, size_t n_actions, case OFPUTIL_NXAST_POP_QUEUE: case OFPUTIL_NXAST_NOTE: case OFPUTIL_NXAST_SET_TUNNEL64: + case OFPUTIL_NXAST_EXIT: + case OFPUTIL_NXAST_DEC_TTL: break; } if (error) { - char *msg = ofputil_error_to_string(error); VLOG_WARN_RL(&bad_ofmsg_rl, "bad action at offset %td (%s)", - (a - actions) * sizeof *a, msg); - free(msg); + (a - actions) * sizeof *a, ofperr_get_name(error)); return error; } } if (left) { VLOG_WARN_RL(&bad_ofmsg_rl, "bad action format at offset %zu", (n_actions - left) * sizeof *a); - return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN); + return OFPERR_OFPBAC_BAD_LEN; } return 0; } @@ -2098,11 +2463,11 @@ struct ofputil_action { }; static const struct ofputil_action action_bad_type - = { -OFP_MKERR(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE), 0, UINT_MAX }; + = { -OFPERR_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 }; + = { -OFPERR_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 }; + = { -OFPERR_OFPBAC_BAD_VENDOR, 0, UINT_MAX }; static const struct ofputil_action * ofputil_decode_ofpat_action(const union ofp_action *a) @@ -2110,26 +2475,16 @@ ofputil_decode_ofpat_action(const union ofp_action *a) enum ofp_action_type type = ntohs(a->type); switch (type) { -#define OFPAT_ACTION(ENUM, TYPE) \ +#define OFPAT_ACTION(ENUM, STRUCT, NAME) \ case ENUM: { \ static const struct ofputil_action action = { \ - OFPUTIL_##ENUM, sizeof(TYPE), sizeof(TYPE) \ + OFPUTIL_##ENUM, \ + sizeof(struct STRUCT), \ + sizeof(struct STRUCT) \ }; \ return &action; \ } - OFPAT_ACTION(OFPAT_OUTPUT, struct ofp_action_output); - OFPAT_ACTION(OFPAT_SET_VLAN_VID, struct ofp_action_vlan_vid); - OFPAT_ACTION(OFPAT_SET_VLAN_PCP, struct ofp_action_vlan_pcp); - OFPAT_ACTION(OFPAT_STRIP_VLAN, struct ofp_action_header); - OFPAT_ACTION(OFPAT_SET_DL_SRC, struct ofp_action_dl_addr); - OFPAT_ACTION(OFPAT_SET_DL_DST, struct ofp_action_dl_addr); - OFPAT_ACTION(OFPAT_SET_NW_SRC, struct ofp_action_nw_addr); - OFPAT_ACTION(OFPAT_SET_NW_DST, struct ofp_action_nw_addr); - OFPAT_ACTION(OFPAT_SET_NW_TOS, struct ofp_action_nw_tos); - OFPAT_ACTION(OFPAT_SET_TP_SRC, struct ofp_action_tp_port); - OFPAT_ACTION(OFPAT_SET_TP_DST, struct ofp_action_tp_port); - OFPAT_ACTION(OFPAT_ENQUEUE, struct ofp_action_enqueue); -#undef OFPAT_ACTION +#include "ofp-util.def" case OFPAT_VENDOR: default: @@ -2144,29 +2499,16 @@ ofputil_decode_nxast_action(const union ofp_action *a) enum nx_action_subtype subtype = ntohs(nah->subtype); switch (subtype) { -#define NXAST_ACTION(ENUM, TYPE, EXTENSIBLE) \ - case ENUM: { \ - static const struct ofputil_action action = { \ - OFPUTIL_##ENUM, \ - sizeof(TYPE), \ - EXTENSIBLE ? UINT_MAX : sizeof(TYPE) \ - }; \ - return &action; \ +#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; \ } - NXAST_ACTION(NXAST_RESUBMIT, struct nx_action_resubmit, false); - NXAST_ACTION(NXAST_SET_TUNNEL, struct nx_action_set_tunnel, false); - NXAST_ACTION(NXAST_SET_QUEUE, struct nx_action_set_queue, false); - NXAST_ACTION(NXAST_POP_QUEUE, struct nx_action_pop_queue, false); - NXAST_ACTION(NXAST_REG_MOVE, struct nx_action_reg_move, false); - NXAST_ACTION(NXAST_REG_LOAD, struct nx_action_reg_load, false); - NXAST_ACTION(NXAST_NOTE, struct nx_action_note, true); - NXAST_ACTION(NXAST_SET_TUNNEL64, struct nx_action_set_tunnel64, false); - NXAST_ACTION(NXAST_MULTIPATH, struct nx_action_multipath, false); - NXAST_ACTION(NXAST_AUTOPATH, struct nx_action_autopath, false); - NXAST_ACTION(NXAST_BUNDLE, struct nx_action_bundle, true); - NXAST_ACTION(NXAST_BUNDLE_LOAD, struct nx_action_bundle, true); - NXAST_ACTION(NXAST_RESUBMIT_TABLE, struct nx_action_resubmit, false); -#undef NXAST_ACTION +#include "ofp-util.def" case NXAST_SNAT__OBSOLETE: case NXAST_DROP_SPOOFED_ARP__OBSOLETE: @@ -2176,8 +2518,8 @@ ofputil_decode_nxast_action(const union ofp_action *a) } /* Parses 'a' to determine its type. Returns a nonnegative OFPUTIL_OFPAT_* or - * OFPUTIL_NXAST_* constant if successful, otherwise a negative OpenFlow error - * code (as returned by ofp_mkerr()). + * OFPUTIL_NXAST_* constant if successful, otherwise a negative OFPERR_* error + * code. * * The caller must have already verified that 'a''s length is correct (that is, * a->header.len is nonzero and a multiple of sizeof(union ofp_action) and no @@ -2197,7 +2539,7 @@ ofputil_decode_action(const union ofp_action *a) 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); + return -OFPERR_OFPBAC_BAD_LEN; } action = ofputil_decode_nxast_action(a); break; @@ -2209,7 +2551,7 @@ ofputil_decode_action(const union ofp_action *a) return (len >= action->min_len && len <= action->max_len ? action->code - : -ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN)); + : -OFPERR_OFPBAC_BAD_LEN); } /* Parses 'a' and returns its type as an OFPUTIL_OFPAT_* or OFPUTIL_NXAST_* @@ -2230,6 +2572,84 @@ ofputil_decode_action_unsafe(const union ofp_action *a) 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 + * and length 'sizeof *action' and zeros the rest. For actions that + * have variable length, the length used and cleared is that of 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) @@ -2269,10 +2689,10 @@ ofputil_normalize_rule(struct cls_rule *rule, enum nx_flow_format flow_format) 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; @@ -2280,7 +2700,7 @@ ofputil_normalize_rule(struct cls_rule *rule, enum nx_flow_format flow_format) /* 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) { @@ -2288,7 +2708,7 @@ ofputil_normalize_rule(struct cls_rule *rule, enum nx_flow_format flow_format) } } 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; @@ -2320,8 +2740,10 @@ ofputil_normalize_rule(struct cls_rule *rule, enum nx_flow_format flow_format) 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; @@ -2329,8 +2751,9 @@ ofputil_normalize_rule(struct cls_rule *rule, enum nx_flow_format flow_format) 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; @@ -2355,207 +2778,6 @@ ofputil_normalize_rule(struct cls_rule *rule, enum nx_flow_format flow_format) } } -static uint32_t -vendor_code_to_id(uint8_t code) -{ - switch (code) { -#define OFPUTIL_VENDOR(NAME, VENDOR_ID) case NAME: return VENDOR_ID; - OFPUTIL_VENDORS -#undef OFPUTIL_VENDOR - default: - return UINT32_MAX; - } -} - -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 - * oh->xid as its transaction ID, and it will include up to the first 64 bytes - * of 'oh'. - * - * Returns NULL if 'error' is not an OpenFlow error code. */ -struct ofpbuf * -ofputil_encode_error_msg(int error, const struct ofp_header *oh) -{ - static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); - - struct ofpbuf *buf; - const void *data; - size_t len; - uint8_t vendor; - uint16_t type; - uint16_t code; - ovs_be32 xid; - - if (!is_ofp_error(error)) { - /* We format 'error' with strerror() here since it seems likely to be - * a system errno value. */ - VLOG_WARN_RL(&rl, "invalid OpenFlow error code %d (%s)", - error, strerror(error)); - return NULL; - } - - if (oh) { - xid = oh->xid; - data = oh; - len = ntohs(oh->length); - if (len > 64) { - len = 64; - } - } else { - xid = 0; - data = NULL; - len = 0; - } - - vendor = get_ofp_err_vendor(error); - type = get_ofp_err_type(error); - code = get_ofp_err_code(error); - if (vendor == OFPUTIL_VENDOR_OPENFLOW) { - struct ofp_error_msg *oem; - - oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR, xid, &buf); - oem->type = htons(type); - oem->code = htons(code); - } else { - struct ofp_error_msg *oem; - struct nx_vendor_error *nve; - uint32_t vendor_id; - - vendor_id = vendor_code_to_id(vendor); - if (vendor_id == UINT32_MAX) { - VLOG_WARN_RL(&rl, "error %x contains invalid vendor code %d", - error, vendor); - return NULL; - } - - oem = make_openflow_xid(len + sizeof *oem + sizeof *nve, - OFPT_ERROR, xid, &buf); - oem->type = htons(NXET_VENDOR); - oem->code = htons(NXVC_VENDOR_ERROR); - - nve = (struct nx_vendor_error *)oem->data; - nve->vendor = htonl(vendor_id); - nve->type = htons(type); - nve->code = htons(code); - } - - if (len) { - buf->size -= len; - ofpbuf_put(buf, data, len); - } - - 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. * @@ -2567,7 +2789,7 @@ ofputil_error_to_string(int error) * do so, with validate_actions()). The caller is also responsible for making * sure that 'b->data' is initially aligned appropriately for "union * ofp_action". */ -int +enum ofperr ofputil_pull_actions(struct ofpbuf *b, unsigned int actions_len, union ofp_action **actionsp, size_t *n_actionsp) { @@ -2591,7 +2813,7 @@ ofputil_pull_actions(struct ofpbuf *b, unsigned int actions_len, error: *actionsp = NULL; *n_actionsp = 0; - return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); + return OFPERR_OFPBRC_BAD_LEN; } bool @@ -2606,3 +2828,72 @@ ofputil_actions_clone(const union ofp_action *actions, size_t n) { 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; +}