X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fofp-util.c;h=6b92dcdb8155f0501f5eb9aab17a2552fb0f7316;hb=eb5ee596d9cb52885fdb65ab3b534f64f22bb149;hp=e41bab2b63da363da711d714aec33444121f25f2;hpb=e2b9ac44c82590c2a9a27bff79ae43899277f703;p=openvswitch diff --git a/lib/ofp-util.c b/lib/ofp-util.c index e41bab2b..6b92dcdb 100644 --- a/lib/ofp-util.c +++ b/lib/ofp-util.c @@ -111,7 +111,7 @@ ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc) flow_wildcards_init_catchall(wc); wc->wildcards = (OVS_FORCE flow_wildcards_t) ofpfw & WC_INVARIANTS; - /* Wildcard fields that aren't defined by ofp10_match or tun_id. */ + /* Wildcard fields that aren't defined by ofp10_match. */ wc->wildcards |= FWW_NW_ECN | FWW_NW_TTL; if (ofpfw & OFPFW10_NW_TOS) { @@ -265,6 +265,44 @@ ofputil_cls_rule_to_ofp10_match(const struct cls_rule *rule, memset(match->pad2, '\0', sizeof match->pad2); } +enum ofperr +ofputil_pull_ofp11_match(struct ofpbuf *buf, unsigned int priority, + struct cls_rule *rule, uint16_t *padded_match_len) +{ + struct ofp11_match_header *omh = buf->data; + uint16_t match_len; + + if (buf->size < sizeof *omh) { + return OFPERR_OFPBMC_BAD_LEN; + } + + match_len = ntohs(omh->length); + + switch (ntohs(omh->type)) { + case OFPMT_STANDARD: { + struct ofp11_match *om; + + if (match_len != sizeof *om || buf->size < sizeof *om) { + return OFPERR_OFPBMC_BAD_LEN; + } + om = ofpbuf_pull(buf, sizeof *om); + if (padded_match_len) { + *padded_match_len = match_len; + } + return ofputil_cls_rule_from_ofp11_match(om, priority, rule); + } + + case OFPMT_OXM: + if (padded_match_len) { + *padded_match_len = ROUND_UP(match_len, 8); + } + return oxm_pull_match(buf, priority, rule); + + default: + return OFPERR_OFPBMC_BAD_TYPE; + } +} + /* Converts the ofp11_match in 'match' into a cls_rule in 'rule', with the * given 'priority'. Returns 0 if successful, otherwise an OFPERR_* value. */ enum ofperr @@ -444,7 +482,6 @@ ofputil_cls_rule_to_ofp11_match(const struct cls_rule *rule, match->in_port = ofputil_port_to_ofp11(rule->flow.in_port); } - memcpy(match->dl_src, rule->flow.dl_src, ETH_ADDR_LEN); for (i = 0; i < ETH_ADDR_LEN; i++) { match->dl_src_mask[i] = ~rule->wc.dl_src_mask[i]; @@ -570,18 +607,22 @@ size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols); * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or * outside the valid range. */ enum ofputil_protocol -ofputil_protocol_from_ofp_version(int version) +ofputil_protocol_from_ofp_version(enum ofp_version version) { switch (version) { - case OFP10_VERSION: return OFPUTIL_P_OF10; - case OFP12_VERSION: return OFPUTIL_P_OF12; - default: return 0; + case OFP10_VERSION: + return OFPUTIL_P_OF10; + case OFP12_VERSION: + return OFPUTIL_P_OF12; + case OFP11_VERSION: + default: + return 0; } } /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION, * OFP11_VERSION or OFP12_VERSION) that corresponds to 'protocol'. */ -uint8_t +enum ofp_version ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol) { switch (protocol) { @@ -1102,133 +1143,212 @@ ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, ofpbuf_use_const(&b, oh, ntohs(oh->length)); raw = ofpraw_pull_assert(&b); - if (raw == OFPRAW_OFPT10_FLOW_MOD) { + if (raw == OFPRAW_OFPT11_FLOW_MOD) { /* Standard OpenFlow 1.1 flow_mod. */ - const struct ofp_flow_mod *ofm; - uint16_t priority; + const struct ofp11_flow_mod *ofm; enum ofperr error; - /* Get the ofp_flow_mod. */ ofm = ofpbuf_pull(&b, sizeof *ofm); - /* Set priority based on original wildcards. Normally we'd allow - * ofputil_cls_rule_from_match() to do this for us, but - * ofputil_normalize_rule() can put wildcards where the original flow - * didn't have them. */ - priority = ntohs(ofm->priority); - if (!(ofm->match.wildcards & htonl(OFPFW10_ALL))) { - priority = UINT16_MAX; + error = ofputil_pull_ofp11_match(&b, ntohs(ofm->priority), &fm->cr, + NULL); + if (error) { + return error; } - /* Translate the rule. */ - ofputil_cls_rule_from_ofp10_match(&ofm->match, priority, &fm->cr); - ofputil_normalize_rule(&fm->cr); - - /* Now get the actions. */ - error = ofpacts_pull_openflow10(&b, b.size, ofpacts); + error = ofpacts_pull_openflow11_instructions(&b, b.size, ofpacts); if (error) { return error; } /* Translate the message. */ - command = ntohs(ofm->command); - fm->cookie = htonll(0); - fm->cookie_mask = htonll(0); - fm->new_cookie = ofm->cookie; + if (ofm->command == OFPFC_ADD) { + fm->cookie = htonll(0); + fm->cookie_mask = htonll(0); + fm->new_cookie = ofm->cookie; + } else { + /* XXX */ + fm->cookie = ofm->cookie; + fm->cookie_mask = ofm->cookie_mask; + fm->new_cookie = htonll(UINT64_MAX); + } + fm->command = ofm->command; + fm->table_id = ofm->table_id; fm->idle_timeout = ntohs(ofm->idle_timeout); fm->hard_timeout = ntohs(ofm->hard_timeout); fm->buffer_id = ntohl(ofm->buffer_id); - fm->out_port = ntohs(ofm->out_port); - fm->flags = ntohs(ofm->flags); - } else if (raw == OFPRAW_NXT_FLOW_MOD) { - /* Nicira extended flow_mod. */ - const struct nx_flow_mod *nfm; - 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->cookie, &fm->cookie_mask); + error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port); if (error) { return error; } - error = ofpacts_pull_openflow10(&b, b.size, ofpacts); - if (error) { - return error; + if (ofm->out_group != htonl(OFPG_ANY)) { + return OFPERR_NXFMFC_GROUPS_NOT_SUPPORTED; } - - /* Translate the message. */ - command = ntohs(nfm->command); - if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) { - /* Flow additions may only set a new cookie, not match an - * existing cookie. */ - return OFPERR_NXBRC_NXM_INVALID; - } - fm->new_cookie = nfm->cookie; - fm->idle_timeout = ntohs(nfm->idle_timeout); - fm->hard_timeout = ntohs(nfm->hard_timeout); - fm->buffer_id = ntohl(nfm->buffer_id); - fm->out_port = ntohs(nfm->out_port); - fm->flags = ntohs(nfm->flags); + fm->flags = ntohs(ofm->flags); } else { - NOT_REACHED(); + if (raw == OFPRAW_OFPT10_FLOW_MOD) { + /* Standard OpenFlow 1.0 flow_mod. */ + const struct ofp10_flow_mod *ofm; + uint16_t priority; + enum ofperr error; + + /* Get the ofp10_flow_mod. */ + ofm = ofpbuf_pull(&b, sizeof *ofm); + + /* Set priority based on original wildcards. Normally we'd allow + * ofputil_cls_rule_from_match() to do this for us, but + * ofputil_normalize_rule() can put wildcards where the original + * flow didn't have them. */ + priority = ntohs(ofm->priority); + if (!(ofm->match.wildcards & htonl(OFPFW10_ALL))) { + priority = UINT16_MAX; + } + + /* Translate the rule. */ + ofputil_cls_rule_from_ofp10_match(&ofm->match, priority, &fm->cr); + ofputil_normalize_rule(&fm->cr); + + /* Now get the actions. */ + error = ofpacts_pull_openflow10(&b, b.size, ofpacts); + if (error) { + return error; + } + + /* Translate the message. */ + command = ntohs(ofm->command); + fm->cookie = htonll(0); + fm->cookie_mask = htonll(0); + fm->new_cookie = ofm->cookie; + fm->idle_timeout = ntohs(ofm->idle_timeout); + fm->hard_timeout = ntohs(ofm->hard_timeout); + fm->buffer_id = ntohl(ofm->buffer_id); + fm->out_port = ntohs(ofm->out_port); + fm->flags = ntohs(ofm->flags); + } else if (raw == OFPRAW_NXT_FLOW_MOD) { + /* Nicira extended flow_mod. */ + const struct nx_flow_mod *nfm; + 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->cookie, &fm->cookie_mask); + if (error) { + return error; + } + error = ofpacts_pull_openflow10(&b, b.size, ofpacts); + if (error) { + return error; + } + + /* Translate the message. */ + command = ntohs(nfm->command); + if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) { + /* Flow additions may only set a new cookie, not match an + * existing cookie. */ + return OFPERR_NXBRC_NXM_INVALID; + } + fm->new_cookie = nfm->cookie; + fm->idle_timeout = ntohs(nfm->idle_timeout); + fm->hard_timeout = ntohs(nfm->hard_timeout); + fm->buffer_id = ntohl(nfm->buffer_id); + fm->out_port = ntohs(nfm->out_port); + fm->flags = ntohs(nfm->flags); + } else { + NOT_REACHED(); + } + + if (protocol & OFPUTIL_P_TID) { + fm->command = command & 0xff; + fm->table_id = command >> 8; + } else { + fm->command = command; + fm->table_id = 0xff; + } } fm->ofpacts = ofpacts->data; fm->ofpacts_len = ofpacts->size; - if (protocol & OFPUTIL_P_TID) { - fm->command = command & 0xff; - fm->table_id = command >> 8; - } else { - fm->command = command; - fm->table_id = 0xff; - } return 0; } +static ovs_be16 +ofputil_tid_command(const struct ofputil_flow_mod *fm, + enum ofputil_protocol protocol) +{ + return htons(protocol & OFPUTIL_P_TID + ? (fm->command & 0xff) | (fm->table_id << 8) + : fm->command); +} + /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to * 'protocol' and returns the message. */ struct ofpbuf * ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, enum ofputil_protocol protocol) { - struct ofp_flow_mod *ofm; - struct nx_flow_mod *nfm; struct ofpbuf *msg; - uint16_t command; - int match_len; - - command = (protocol & OFPUTIL_P_TID - ? (fm->command & 0xff) | (fm->table_id << 8) - : fm->command); switch (protocol) { + case OFPUTIL_P_OF12: { + struct ofp11_flow_mod *ofm; + + msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, OFP12_VERSION, + NXM_TYPICAL_LEN + fm->ofpacts_len); + ofm = ofpbuf_put_zeros(msg, sizeof *ofm); + ofm->cookie = fm->new_cookie; + ofm->cookie_mask = fm->cookie_mask; + ofm->table_id = fm->table_id; + ofm->command = fm->command; + ofm->idle_timeout = htons(fm->idle_timeout); + ofm->hard_timeout = htons(fm->hard_timeout); + ofm->priority = htons(fm->cr.priority); + ofm->buffer_id = htonl(fm->buffer_id); + ofm->out_port = ofputil_port_to_ofp11(fm->out_port); + ofm->out_group = htonl(OFPG11_ANY); + ofm->flags = htons(fm->flags); + oxm_put_match(msg, &fm->cr); + if (fm->ofpacts) { + ofpacts_put_openflow11_instructions(fm->ofpacts, fm->ofpacts_len, + msg); + } + break; + } + case OFPUTIL_P_OF10: - case OFPUTIL_P_OF10_TID: + case OFPUTIL_P_OF10_TID: { + struct ofp10_flow_mod *ofm; + msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION, fm->ofpacts_len); ofm = ofpbuf_put_zeros(msg, sizeof *ofm); ofputil_cls_rule_to_ofp10_match(&fm->cr, &ofm->match); ofm->cookie = fm->new_cookie; - ofm->command = htons(command); + ofm->command = ofputil_tid_command(fm, protocol); ofm->idle_timeout = htons(fm->idle_timeout); ofm->hard_timeout = htons(fm->hard_timeout); ofm->priority = htons(fm->cr.priority); ofm->buffer_id = htonl(fm->buffer_id); ofm->out_port = htons(fm->out_port); ofm->flags = htons(fm->flags); + if (fm->ofpacts) { + ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); + } break; + } case OFPUTIL_P_NXM: - case OFPUTIL_P_NXM_TID: + case OFPUTIL_P_NXM_TID: { + struct nx_flow_mod *nfm; + int match_len; + msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION, NXM_TYPICAL_LEN + fm->ofpacts_len); nfm = ofpbuf_put_zeros(msg, sizeof *nfm); - nfm->command = htons(command); + nfm->command = ofputil_tid_command(fm, protocol); nfm->cookie = fm->new_cookie; - match_len = nx_put_match(msg, false, &fm->cr, - fm->cookie, fm->cookie_mask); + match_len = nx_put_match(msg, &fm->cr, fm->cookie, fm->cookie_mask); nfm = msg->l3; nfm->idle_timeout = htons(fm->idle_timeout); nfm->hard_timeout = htons(fm->hard_timeout); @@ -1237,16 +1357,16 @@ ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, nfm->out_port = htons(fm->out_port); nfm->flags = htons(fm->flags); nfm->match_len = htons(match_len); + if (fm->ofpacts) { + ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); + } break; + } - case OFPUTIL_P_OF12: default: NOT_REACHED(); } - if (fm->ofpacts) { - ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); - } ofpmsg_update_length(msg); return msg; } @@ -1387,7 +1507,7 @@ ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr, : OFPRAW_NXST_FLOW_REQUEST); msg = ofpraw_alloc(raw, OFP10_VERSION, 0); ofpbuf_put_zeros(msg, sizeof *nfsr); - match_len = nx_put_match(msg, false, &fsr->match, + match_len = nx_put_match(msg, &fsr->match, fsr->cookie, fsr->cookie_mask); nfsr = msg->l3; @@ -1599,7 +1719,7 @@ ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs, int match_len; ofpbuf_put_uninit(reply, sizeof *nfs); - match_len = nx_put_match(reply, false, &fs->rule, 0, 0); + match_len = nx_put_match(reply, &fs->rule, 0, 0); ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs); @@ -1768,7 +1888,7 @@ ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION, htonl(0), NXM_TYPICAL_LEN); nfr = ofpbuf_put_zeros(msg, sizeof *nfr); - match_len = nx_put_match(msg, false, &fr->rule, 0, 0); + match_len = nx_put_match(msg, &fr->rule, 0, 0); nfr = msg->l3; nfr->cookie = fr->cookie; @@ -1791,6 +1911,26 @@ ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, return msg; } +static void +ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin, + struct cls_rule *rule, + struct ofpbuf *b) +{ + pin->packet = b->data; + pin->packet_len = b->size; + + 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; + + pin->fmd.metadata = rule->flow.metadata; + pin->fmd.metadata_mask = rule->wc.metadata_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); +} + enum ofperr ofputil_decode_packet_in(struct ofputil_packet_in *pin, const struct ofp_header *oh) @@ -1802,7 +1942,29 @@ ofputil_decode_packet_in(struct ofputil_packet_in *pin, ofpbuf_use_const(&b, oh, ntohs(oh->length)); raw = ofpraw_pull_assert(&b); - if (raw == OFPRAW_OFPT10_PACKET_IN) { + if (raw == OFPRAW_OFPT12_PACKET_IN) { + const struct ofp12_packet_in *opi; + struct cls_rule rule; + int error; + + opi = ofpbuf_pull(&b, sizeof *opi); + error = oxm_pull_match_loose(&b, 0, &rule); + if (error) { + return error; + } + + if (!ofpbuf_try_pull(&b, 2)) { + return OFPERR_OFPBRC_BAD_LEN; + } + + pin->reason = opi->reason; + pin->table_id = opi->table_id; + + pin->buffer_id = ntohl(opi->buffer_id); + pin->total_len = ntohs(opi->total_len); + + ofputil_decode_packet_in_finish(pin, &rule, &b); + } else if (raw == OFPRAW_OFPT10_PACKET_IN) { const struct ofp_packet_in *opi; opi = ofpbuf_pull(&b, offsetof(struct ofp_packet_in, data)); @@ -1830,26 +1992,14 @@ ofputil_decode_packet_in(struct ofputil_packet_in *pin, 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; - - pin->fmd.metadata = rule.flow.metadata; - pin->fmd.metadata_mask = rule.wc.metadata_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); + + ofputil_decode_packet_in_finish(pin, &rule, &b); } else { NOT_REACHED(); } @@ -1857,17 +2007,58 @@ ofputil_decode_packet_in(struct ofputil_packet_in *pin, return 0; } +static void +ofputil_packet_in_to_rule(const struct ofputil_packet_in *pin, + struct cls_rule *rule) +{ + int i; + + cls_rule_init_catchall(rule, 0); + cls_rule_set_tun_id_masked(rule, pin->fmd.tun_id, + pin->fmd.tun_id_mask); + cls_rule_set_metadata_masked(rule, pin->fmd.metadata, + pin->fmd.metadata_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]); + } + + cls_rule_set_in_port(rule, pin->fmd.in_port); +} + /* 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 ofputil_protocol protocol, 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. */ - if (packet_in_format == NXPIF_OPENFLOW10) { + if (protocol == OFPUTIL_P_OF12) { + struct ofp12_packet_in *opi; + struct cls_rule rule; + + ofputil_packet_in_to_rule(pin, &rule); + + /* The final argument is just an estimate of the space required. */ + packet = ofpraw_alloc_xid(OFPRAW_OFPT12_PACKET_IN, OFP12_VERSION, + htonl(0), (sizeof(struct flow_metadata) * 2 + + 2 + send_len)); + ofpbuf_put_zeros(packet, sizeof *opi); + oxm_put_match(packet, &rule); + ofpbuf_put_zeros(packet, 2); + ofpbuf_put(packet, pin->packet, send_len); + + opi = packet->l3; + opi->buffer_id = htonl(pin->buffer_id); + opi->total_len = htons(pin->total_len); + opi->reason = pin->reason; + opi->table_id = pin->table_id; + } else if (packet_in_format == NXPIF_OPENFLOW10) { struct ofp_packet_in *opi; packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION, @@ -1883,28 +2074,15 @@ ofputil_encode_packet_in(const struct ofputil_packet_in *pin, struct nx_packet_in *npi; struct cls_rule rule; size_t match_len; - size_t i; - - cls_rule_init_catchall(&rule, 0); - cls_rule_set_tun_id_masked(&rule, pin->fmd.tun_id, - pin->fmd.tun_id_mask); - cls_rule_set_metadata_masked(&rule, pin->fmd.metadata, - pin->fmd.metadata_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]); - } - - cls_rule_set_in_port(&rule, pin->fmd.in_port); + ofputil_packet_in_to_rule(pin, &rule); /* The final argument is just an estimate of the space required. */ packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION, htonl(0), (sizeof(struct flow_metadata) * 2 + 2 + send_len)); ofpbuf_put_zeros(packet, sizeof *npi); - match_len = nx_put_match(packet, false, &rule, 0, 0); + match_len = nx_put_match(packet, &rule, 0, 0); ofpbuf_put_zeros(packet, 2); ofpbuf_put(packet, pin->packet, send_len); @@ -1971,29 +2149,54 @@ ofputil_decode_packet_out(struct ofputil_packet_out *po, const struct ofp_header *oh, struct ofpbuf *ofpacts) { - const struct ofp_packet_out *opo; - enum ofperr error; + enum ofperr bad_in_port_err; enum ofpraw raw; struct ofpbuf b; ofpbuf_use_const(&b, oh, ntohs(oh->length)); raw = ofpraw_pull_assert(&b); - assert(raw == OFPRAW_OFPT10_PACKET_OUT); - opo = ofpbuf_pull(&b, sizeof *opo); - po->buffer_id = ntohl(opo->buffer_id); - po->in_port = ntohs(opo->in_port); + if (raw == OFPRAW_OFPT11_PACKET_OUT) { + enum ofperr error; + const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); + + po->buffer_id = ntohl(opo->buffer_id); + error = ofputil_port_from_ofp11(opo->in_port, &po->in_port); + if (error) { + return error; + } + + error = ofpacts_pull_openflow11_actions(&b, ntohs(opo->actions_len), + ofpacts); + if (error) { + return error; + } + + bad_in_port_err = OFPERR_OFPBMC_BAD_VALUE; + } else if (raw == OFPRAW_OFPT10_PACKET_OUT) { + enum ofperr error; + const struct ofp_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); + + po->buffer_id = ntohl(opo->buffer_id); + po->in_port = ntohs(opo->in_port); + + error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts); + if (error) { + return error; + } + + bad_in_port_err = OFPERR_NXBRC_BAD_IN_PORT; + } else { + NOT_REACHED(); + } + if (po->in_port >= OFPP_MAX && po->in_port != OFPP_LOCAL && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) { VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16, po->in_port); - return OFPERR_NXBRC_BAD_IN_PORT; + return bad_in_port_err; } - error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts); - if (error) { - return error; - } po->ofpacts = ofpacts->data; po->ofpacts_len = ofpacts->size; @@ -2122,10 +2325,17 @@ ofputil_decode_ofp11_port(struct ofputil_phy_port *pp, } static size_t -ofputil_get_phy_port_size(uint8_t ofp_version) -{ - return ofp_version == OFP10_VERSION ? sizeof(struct ofp10_phy_port) - : sizeof(struct ofp11_port); +ofputil_get_phy_port_size(enum ofp_version ofp_version) +{ + switch (ofp_version) { + case OFP10_VERSION: + return sizeof(struct ofp10_phy_port); + case OFP11_VERSION: + case OFP12_VERSION: + return sizeof(struct ofp11_port); + default: + NOT_REACHED(); + } } static void @@ -2170,46 +2380,66 @@ ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp, } static void -ofputil_put_phy_port(uint8_t ofp_version, const struct ofputil_phy_port *pp, - struct ofpbuf *b) +ofputil_put_phy_port(enum ofp_version ofp_version, + const struct ofputil_phy_port *pp, struct ofpbuf *b) { - if (ofp_version == OFP10_VERSION) { + switch (ofp_version) { + case OFP10_VERSION: { struct ofp10_phy_port *opp; if (b->size + sizeof *opp <= UINT16_MAX) { opp = ofpbuf_put_uninit(b, sizeof *opp); ofputil_encode_ofp10_phy_port(pp, opp); } - } else { + break; + } + + case OFP11_VERSION: + case OFP12_VERSION: { struct ofp11_port *op; if (b->size + sizeof *op <= UINT16_MAX) { op = ofpbuf_put_uninit(b, sizeof *op); ofputil_encode_ofp11_port(pp, op); } + break; + } + + default: + NOT_REACHED(); } } void -ofputil_append_port_desc_stats_reply(uint8_t ofp_version, +ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version, const struct ofputil_phy_port *pp, struct list *replies) { - if (ofp_version == OFP10_VERSION) { + switch (ofp_version) { + case OFP10_VERSION: { struct ofp10_phy_port *opp; opp = ofpmp_append(replies, sizeof *opp); ofputil_encode_ofp10_phy_port(pp, opp); - } else { + break; + } + + case OFP11_VERSION: + case OFP12_VERSION: { struct ofp11_port *op; op = ofpmp_append(replies, sizeof *op); ofputil_encode_ofp11_port(pp, op); + break; + } + + default: + NOT_REACHED(); } } /* ofputil_switch_features */ #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \ - OFPC_IP_REASM | OFPC_QUEUE_STATS | OFPC_ARP_MATCH_IP) + OFPC_IP_REASM | OFPC_QUEUE_STATS) BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS); BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS); BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS); @@ -2238,35 +2468,6 @@ static const struct ofputil_action_bit_translation of10_action_bits[] = { { 0, 0 }, }; -static const struct ofputil_action_bit_translation of11_action_bits[] = { - { OFPUTIL_A_OUTPUT, OFPAT11_OUTPUT }, - { OFPUTIL_A_SET_VLAN_VID, OFPAT11_SET_VLAN_VID }, - { OFPUTIL_A_SET_VLAN_PCP, OFPAT11_SET_VLAN_PCP }, - { OFPUTIL_A_SET_DL_SRC, OFPAT11_SET_DL_SRC }, - { OFPUTIL_A_SET_DL_DST, OFPAT11_SET_DL_DST }, - { OFPUTIL_A_SET_NW_SRC, OFPAT11_SET_NW_SRC }, - { OFPUTIL_A_SET_NW_DST, OFPAT11_SET_NW_DST }, - { OFPUTIL_A_SET_NW_TOS, OFPAT11_SET_NW_TOS }, - { OFPUTIL_A_SET_NW_ECN, OFPAT11_SET_NW_ECN }, - { OFPUTIL_A_SET_TP_SRC, OFPAT11_SET_TP_SRC }, - { OFPUTIL_A_SET_TP_DST, OFPAT11_SET_TP_DST }, - { OFPUTIL_A_COPY_TTL_OUT, OFPAT11_COPY_TTL_OUT }, - { OFPUTIL_A_COPY_TTL_IN, OFPAT11_COPY_TTL_IN }, - { OFPUTIL_A_SET_MPLS_LABEL, OFPAT11_SET_MPLS_LABEL }, - { OFPUTIL_A_SET_MPLS_TC, OFPAT11_SET_MPLS_TC }, - { OFPUTIL_A_SET_MPLS_TTL, OFPAT11_SET_MPLS_TTL }, - { OFPUTIL_A_DEC_MPLS_TTL, OFPAT11_DEC_MPLS_TTL }, - { OFPUTIL_A_PUSH_VLAN, OFPAT11_PUSH_VLAN }, - { OFPUTIL_A_POP_VLAN, OFPAT11_POP_VLAN }, - { OFPUTIL_A_PUSH_MPLS, OFPAT11_PUSH_MPLS }, - { OFPUTIL_A_POP_MPLS, OFPAT11_POP_MPLS }, - { OFPUTIL_A_SET_QUEUE, OFPAT11_SET_QUEUE }, - { OFPUTIL_A_GROUP, OFPAT11_GROUP }, - { OFPUTIL_A_SET_NW_TTL, OFPAT11_SET_NW_TTL }, - { OFPUTIL_A_DEC_NW_TTL, OFPAT11_DEC_NW_TTL }, - { 0, 0 }, -}; - static enum ofputil_action_bitmap decode_action_bits(ovs_be32 of_actions, const struct ofputil_action_bit_translation *x) @@ -2282,6 +2483,22 @@ decode_action_bits(ovs_be32 of_actions, return ofputil_actions; } +static uint32_t +ofputil_capabilities_mask(enum ofp_version ofp_version) +{ + /* Handle capabilities whose bit is unique for all Open Flow versions */ + switch (ofp_version) { + case OFP10_VERSION: + case OFP11_VERSION: + return OFPC_COMMON | OFPC_ARP_MATCH_IP; + case OFP12_VERSION: + return OFPC_COMMON | OFPC12_PORT_BLOCKED; + default: + /* Caller needs to check osf->header.version itself */ + return 0; + } +} + /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an * abstract representation in '*features'. Initializes '*b' to iterate over * the OpenFlow port structures following 'osf' with later calls to @@ -2303,7 +2520,8 @@ ofputil_decode_switch_features(const struct ofp_header *oh, features->n_buffers = ntohl(osf->n_buffers); features->n_tables = osf->n_tables; - features->capabilities = ntohl(osf->capabilities) & OFPC_COMMON; + features->capabilities = ntohl(osf->capabilities) & + ofputil_capabilities_mask(oh->version); if (b->size % ofputil_get_phy_port_size(oh->version)) { return OFPERR_OFPBRC_BAD_LEN; @@ -2318,7 +2536,7 @@ ofputil_decode_switch_features(const struct ofp_header *oh, if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) { features->capabilities |= OFPUTIL_C_GROUP_STATS; } - features->actions = decode_action_bits(osf->actions, of11_action_bits); + features->actions = 0; } else { return OFPERR_OFPBRC_BAD_VERSION; } @@ -2383,29 +2601,45 @@ ofputil_encode_switch_features(const struct ofputil_switch_features *features, { struct ofp_switch_features *osf; struct ofpbuf *b; - uint8_t version; + enum ofp_version version; + enum ofpraw raw; version = ofputil_protocol_to_ofp_version(protocol); - b = ofpraw_alloc_xid(version == OFP10_VERSION - ? OFPRAW_OFPT10_FEATURES_REPLY - : OFPRAW_OFPT11_FEATURES_REPLY, - version, xid, 0); + switch (version) { + case OFP10_VERSION: + raw = OFPRAW_OFPT10_FEATURES_REPLY; + break; + case OFP11_VERSION: + case OFP12_VERSION: + raw = OFPRAW_OFPT11_FEATURES_REPLY; + break; + default: + NOT_REACHED(); + } + b = ofpraw_alloc_xid(raw, version, xid, 0); osf = ofpbuf_put_zeros(b, sizeof *osf); osf->datapath_id = htonll(features->datapath_id); osf->n_buffers = htonl(features->n_buffers); osf->n_tables = features->n_tables; osf->capabilities = htonl(features->capabilities & OFPC_COMMON); - if (version == OFP10_VERSION) { + osf->capabilities = htonl(features->capabilities & + ofputil_capabilities_mask(version)); + switch (version) { + case OFP10_VERSION: if (features->capabilities & OFPUTIL_C_STP) { osf->capabilities |= htonl(OFPC10_STP); } osf->actions = encode_action_bits(features->actions, of10_action_bits); - } else { + break; + case OFP11_VERSION: + case OFP12_VERSION: if (features->capabilities & OFPUTIL_C_GROUP_STATS) { osf->capabilities |= htonl(OFPC11_GROUP_STATS); } - osf->actions = encode_action_bits(features->actions, of11_action_bits); + break; + default: + NOT_REACHED(); } return b; @@ -2460,13 +2694,25 @@ ofputil_encode_port_status(const struct ofputil_port_status *ps, { struct ofp_port_status *ops; struct ofpbuf *b; - uint8_t version; + enum ofp_version version; + enum ofpraw raw; version = ofputil_protocol_to_ofp_version(protocol); - b = ofpraw_alloc_xid(version == OFP10_VERSION - ? OFPRAW_OFPT10_PORT_STATUS - : OFPRAW_OFPT11_PORT_STATUS, - version, htonl(0), 0); + switch (version) { + case OFP10_VERSION: + raw = OFPRAW_OFPT10_PORT_STATUS; + break; + + case OFP11_VERSION: + case OFP12_VERSION: + raw = OFPRAW_OFPT11_PORT_STATUS; + break; + + default: + NOT_REACHED(); + } + + b = ofpraw_alloc_xid(raw, version, htonl(0), 0); ops = ofpbuf_put_zeros(b, sizeof *ops); ops->reason = ps->reason; ofputil_put_phy_port(version, &ps->desc, b); @@ -2524,10 +2770,11 @@ struct ofpbuf * ofputil_encode_port_mod(const struct ofputil_port_mod *pm, enum ofputil_protocol protocol) { - uint8_t ofp_version = ofputil_protocol_to_ofp_version(protocol); + enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); struct ofpbuf *b; - if (ofp_version == OFP10_VERSION) { + switch (ofp_version) { + case OFP10_VERSION: { struct ofp10_port_mod *opm; b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0); @@ -2537,7 +2784,10 @@ ofputil_encode_port_mod(const struct ofputil_port_mod *pm, opm->config = htonl(pm->config & OFPPC10_ALL); opm->mask = htonl(pm->mask & OFPPC10_ALL); opm->advertise = netdev_port_features_to_ofp10(pm->advertise); - } else if (ofp_version == OFP11_VERSION) { + break; + } + + case OFP11_VERSION: { struct ofp11_port_mod *opm; b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0); @@ -2547,7 +2797,11 @@ ofputil_encode_port_mod(const struct ofputil_port_mod *pm, opm->config = htonl(pm->config & OFPPC11_ALL); opm->mask = htonl(pm->mask & OFPPC11_ALL); opm->advertise = netdev_port_features_to_ofp11(pm->advertise); - } else { + break; + } + + case OFP12_VERSION: + default: NOT_REACHED(); } @@ -2625,7 +2879,7 @@ ofputil_append_flow_monitor_request( start_ofs = msg->size; ofpbuf_put_zeros(msg, sizeof *nfmr); - match_len = nx_put_match(msg, false, &rq->match, htonll(0), htonll(0)); + match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0)); nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr); nfmr->id = htonl(rq->id); @@ -2793,8 +3047,7 @@ ofputil_append_flow_update(const struct ofputil_flow_update *update, int match_len; ofpbuf_put_zeros(msg, sizeof *nfuf); - match_len = nx_put_match(msg, false, update->match, - htonll(0), htonll(0)); + match_len = nx_put_match(msg, update->match, htonll(0), htonll(0)); ofpacts_put_openflow10(update->ofpacts, update->ofpacts_len, msg); nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf); @@ -2815,10 +3068,10 @@ ofputil_append_flow_update(const struct ofputil_flow_update *update, } struct ofpbuf * -ofputil_encode_packet_out(const struct ofputil_packet_out *po) +ofputil_encode_packet_out(const struct ofputil_packet_out *po, + enum ofputil_protocol protocol) { - struct ofp_packet_out *opo; - size_t actions_ofs; + enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); struct ofpbuf *msg; size_t size; @@ -2827,15 +3080,42 @@ ofputil_encode_packet_out(const struct ofputil_packet_out *po) size += po->packet_len; } - msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size); - ofpbuf_put_zeros(msg, sizeof *opo); - actions_ofs = msg->size; - ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg); + switch (ofp_version) { + case OFP10_VERSION: { + struct ofp_packet_out *opo; + size_t actions_ofs; + + msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size); + ofpbuf_put_zeros(msg, sizeof *opo); + actions_ofs = msg->size; + ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg); + + opo = msg->l3; + opo->buffer_id = htonl(po->buffer_id); + opo->in_port = htons(po->in_port); + opo->actions_len = htons(msg->size - actions_ofs); + break; + } + + case OFP11_VERSION: + case OFP12_VERSION: { + struct ofp11_packet_out *opo; + size_t len; - opo = msg->l3; - opo->buffer_id = htonl(po->buffer_id); - opo->in_port = htons(po->in_port); - opo->actions_len = htons(msg->size - actions_ofs); + msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size); + ofpbuf_put_zeros(msg, sizeof *opo); + len = ofpacts_put_openflow11_actions(po->ofpacts, po->ofpacts_len, msg); + + opo = msg->l3; + opo->buffer_id = htonl(po->buffer_id); + opo->in_port = ofputil_port_to_ofp11(po->in_port); + opo->actions_len = htons(len); + break; + } + + default: + NOT_REACHED(); + } if (po->buffer_id == UINT32_MAX) { ofpbuf_put(msg, po->packet, po->packet_len); @@ -2848,9 +3128,9 @@ ofputil_encode_packet_out(const struct ofputil_packet_out *po) /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */ struct ofpbuf * -make_echo_request(void) +make_echo_request(enum ofp_version ofp_version) { - return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, OFP10_VERSION, + return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version, htonl(0), 0); } @@ -2871,9 +3151,25 @@ make_echo_reply(const struct ofp_header *rq) } struct ofpbuf * -ofputil_encode_barrier_request(void) +ofputil_encode_barrier_request(enum ofp_version ofp_version) { - return ofpraw_alloc(OFPRAW_OFPT10_BARRIER_REQUEST, OFP10_VERSION, 0); + enum ofpraw type; + + switch (ofp_version) { + case OFP12_VERSION: + case OFP11_VERSION: + type = OFPRAW_OFPT11_BARRIER_REQUEST; + break; + + case OFP10_VERSION: + type = OFPRAW_OFPT10_BARRIER_REQUEST; + break; + + default: + NOT_REACHED(); + } + + return ofpraw_alloc(type, ofp_version, 0); } const char * @@ -3037,16 +3333,22 @@ ofputil_format_port(uint16_t port, struct ds *s) * port and returns 0. If no ports remain to be decoded, returns EOF. * On an error, returns a positive OFPERR_* value. */ int -ofputil_pull_phy_port(uint8_t ofp_version, struct ofpbuf *b, +ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b, struct ofputil_phy_port *pp) { - if (ofp_version == OFP10_VERSION) { + switch (ofp_version) { + case OFP10_VERSION: { const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp); return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF; - } else { + } + case OFP11_VERSION: + case OFP12_VERSION: { const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op); return op ? ofputil_decode_ofp11_port(pp, op) : EOF; } + default: + NOT_REACHED(); + } } /* Given a buffer 'b' that contains an array of OpenFlow ports of type @@ -3141,23 +3443,8 @@ ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf) } #include "ofp-util.def" -/* "Normalizes" the wildcards in 'rule'. That means: - * - * 1. If the type of level N is known, then only the valid fields for that - * level may be specified. For example, ARP does not have a TOS field, - * so nw_tos must be wildcarded if 'rule' specifies an ARP flow. - * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and - * ipv6_dst (and other fields) must be wildcarded if 'rule' specifies an - * IPv4 flow. - * - * 2. If the type of level N is not known (or not understood by Open - * vSwitch), then no fields at all for that level may be specified. For - * example, Open vSwitch does not understand SCTP, an L4 protocol, so the - * L4 fields tp_src and tp_dst must be wildcarded if 'rule' specifies an - * SCTP flow. - */ -void -ofputil_normalize_rule(struct cls_rule *rule) +static void +ofputil_normalize_rule__(struct cls_rule *rule, bool may_log) { enum { MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */ @@ -3231,7 +3518,7 @@ ofputil_normalize_rule(struct cls_rule *rule) /* Log any changes. */ if (!flow_wildcards_equal(&wc, &rule->wc)) { - bool log = !VLOG_DROP_INFO(&bad_ofmsg_rl); + bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl); char *pre = log ? cls_rule_to_string(rule) : NULL; rule->wc = wc; @@ -3248,6 +3535,39 @@ ofputil_normalize_rule(struct cls_rule *rule) } } +/* "Normalizes" the wildcards in 'rule'. That means: + * + * 1. If the type of level N is known, then only the valid fields for that + * level may be specified. For example, ARP does not have a TOS field, + * so nw_tos must be wildcarded if 'rule' specifies an ARP flow. + * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and + * ipv6_dst (and other fields) must be wildcarded if 'rule' specifies an + * IPv4 flow. + * + * 2. If the type of level N is not known (or not understood by Open + * vSwitch), then no fields at all for that level may be specified. For + * example, Open vSwitch does not understand SCTP, an L4 protocol, so the + * L4 fields tp_src and tp_dst must be wildcarded if 'rule' specifies an + * SCTP flow. + * + * If this function changes 'rule', it logs a rate-limited informational + * message. */ +void +ofputil_normalize_rule(struct cls_rule *rule) +{ + ofputil_normalize_rule__(rule, true); +} + +/* Same as ofputil_normalize_rule() without the logging. Thus, this function + * is suitable for a program's internal use, whereas ofputil_normalize_rule() + * sense for use on flows received from elsewhere (so that a bug in the program + * that sent them can be reported and corrected). */ +void +ofputil_normalize_rule_quiet(struct cls_rule *rule) +{ + ofputil_normalize_rule__(rule, false); +} + /* Parses a key or a key-value pair from '*stringp'. * * On success: Stores the key into '*keyp'. Stores the value, if present, into