/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
+ * Copyright (c) 2008-2017 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*/
#include <config.h>
-#include "ofp-print.h"
+#include "openvswitch/ofp-util.h"
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <stdlib.h>
+#include "bitmap.h"
#include "bundle.h"
#include "byte-order.h"
#include "classifier.h"
-#include "openvswitch/dynamic-string.h"
#include "learn.h"
-#include "meta-flow.h"
#include "multipath.h"
#include "netdev.h"
#include "nx-match.h"
#include "id-pool.h"
-#include "ofp-actions.h"
-#include "ofp-msgs.h"
-#include "ofp-prop.h"
-#include "ofp-util.h"
-#include "openvswitch/ofpbuf.h"
#include "openflow/netronome-ext.h"
+#include "openvswitch/dynamic-string.h"
+#include "openvswitch/json.h"
+#include "openvswitch/meta-flow.h"
+#include "openvswitch/ofp-actions.h"
+#include "openvswitch/ofp-errors.h"
+#include "openvswitch/ofp-msgs.h"
+#include "openvswitch/ofp-print.h"
+#include "openvswitch/ofp-prop.h"
+#include "openvswitch/ofpbuf.h"
+#include "openvswitch/type-props.h"
+#include "openvswitch/vlog.h"
+#include "openflow/intel-ext.h"
#include "packets.h"
-#include "pktbuf.h"
#include "random.h"
#include "tun-metadata.h"
#include "unaligned.h"
-#include "type-props.h"
-#include "openvswitch/ofp-errors.h"
-#include "openvswitch/vlog.h"
-#include "bitmap.h"
+#include "util.h"
#include "uuid.h"
VLOG_DEFINE_THIS_MODULE(ofp_util);
/* Rate limit for OpenFlow message parse errors. These always indicate a bug
* in the peer and so there's not much point in showing a lot of them. */
static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
-
-static enum ofputil_table_vacancy ofputil_decode_table_vacancy(
- ovs_be32 config, enum ofp_version);
-static enum ofputil_table_eviction ofputil_decode_table_eviction(
- ovs_be32 config, enum ofp_version);
-static ovs_be32 ofputil_encode_table_config(enum ofputil_table_miss,
- enum ofputil_table_eviction,
- enum ofputil_table_vacancy,
- enum ofp_version);
-
-/* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
- * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
- * is wildcarded.
- *
- * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
- * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
- * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
- * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
- * wildcarded. */
-ovs_be32
-ofputil_wcbits_to_netmask(int wcbits)
-{
- wcbits &= 0x3f;
- return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
-}
-
-/* Given the IP netmask 'netmask', returns the number of bits of the IP address
- * that it wildcards, that is, the number of 0-bits in 'netmask', a number
- * between 0 and 32 inclusive.
- *
- * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
- * still be in the valid range but isn't otherwise meaningful. */
-int
-ofputil_netmask_to_wcbits(ovs_be32 netmask)
-{
- return 32 - ip_count_cidr_bits(netmask);
-}
-
-/* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
- * flow_wildcards in 'wc' for use in struct match. It is the caller's
- * responsibility to handle the special case where the flow match's dl_vlan is
- * set to OFP_VLAN_NONE. */
-void
-ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
+\f
+static bool
+ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
+ uint32_t *allowed_versionsp)
{
- BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35);
-
- /* Initialize most of wc. */
- flow_wildcards_init_catchall(wc);
-
- if (!(ofpfw & OFPFW10_IN_PORT)) {
- wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
- }
+ uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
+ const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
+ uint32_t allowed_versions;
- if (!(ofpfw & OFPFW10_NW_TOS)) {
- wc->masks.nw_tos |= IP_DSCP_MASK;
+ if (!bitmap_len || bitmap_len % sizeof *bitmap) {
+ return false;
}
- if (!(ofpfw & OFPFW10_NW_PROTO)) {
- wc->masks.nw_proto = UINT8_MAX;
- }
- wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
- >> OFPFW10_NW_SRC_SHIFT);
- wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
- >> OFPFW10_NW_DST_SHIFT);
+ /* Only use the first 32-bit element of the bitmap as that is all the
+ * current implementation supports. Subsequent elements are ignored which
+ * should have no effect on session negotiation until Open vSwitch supports
+ * wire-protocol versions greater than 31.
+ */
+ allowed_versions = ntohl(bitmap[0]);
- if (!(ofpfw & OFPFW10_TP_SRC)) {
- wc->masks.tp_src = OVS_BE16_MAX;
- }
- if (!(ofpfw & OFPFW10_TP_DST)) {
- wc->masks.tp_dst = OVS_BE16_MAX;
+ if (allowed_versions & 1) {
+ /* There's no OpenFlow version 0. */
+ VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
+ "version 0x00");
+ allowed_versions &= ~1u;
}
- if (!(ofpfw & OFPFW10_DL_SRC)) {
- WC_MASK_FIELD(wc, dl_src);
- }
- if (!(ofpfw & OFPFW10_DL_DST)) {
- WC_MASK_FIELD(wc, dl_dst);
- }
- if (!(ofpfw & OFPFW10_DL_TYPE)) {
- wc->masks.dl_type = OVS_BE16_MAX;
+ if (!allowed_versions) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
+ "version (between 0x01 and 0x1f)");
+ return false;
}
- /* VLAN TCI mask. */
- if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
- wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
- }
- if (!(ofpfw & OFPFW10_DL_VLAN)) {
- wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
- }
+ *allowed_versionsp = allowed_versions;
+ return true;
}
-/* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
-void
-ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
- struct match *match)
+static uint32_t
+version_bitmap_from_version(uint8_t ofp_version)
{
- uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
-
- /* Initialize match->wc. */
- memset(&match->flow, 0, sizeof match->flow);
- ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
-
- /* Initialize most of match->flow. */
- match->flow.nw_src = ofmatch->nw_src;
- match->flow.nw_dst = ofmatch->nw_dst;
- match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
- match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
- match->flow.tp_src = ofmatch->tp_src;
- match->flow.tp_dst = ofmatch->tp_dst;
- match->flow.dl_src = ofmatch->dl_src;
- match->flow.dl_dst = ofmatch->dl_dst;
- match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
- match->flow.nw_proto = ofmatch->nw_proto;
-
- /* Translate VLANs. */
- if (!(ofpfw & OFPFW10_DL_VLAN) &&
- ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
- /* Match only packets without 802.1Q header.
- *
- * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
- *
- * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
- * because we can't have a specific PCP without an 802.1Q header.
- * However, older versions of OVS treated this as matching packets
- * withut an 802.1Q header, so we do here too. */
- match->flow.vlan_tci = htons(0);
- match->wc.masks.vlan_tci = htons(0xffff);
- } else {
- ovs_be16 vid, pcp, tci;
- uint16_t hpcp;
-
- vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
- hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
- pcp = htons(hpcp);
- tci = vid | pcp | htons(VLAN_CFI);
- match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
- }
-
- /* Clean up. */
- match_zero_wildcarded_fields(match);
+ return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
}
-/* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
-void
-ofputil_match_to_ofp10_match(const struct match *match,
- struct ofp10_match *ofmatch)
+/* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
+ * the set of OpenFlow versions for which 'oh' announces support.
+ *
+ * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
+ * successful, and thus '*allowed_versions' is always initialized. However, it
+ * returns false if 'oh' contains some data that could not be fully understood,
+ * true if 'oh' was completely parsed. */
+bool
+ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
{
- const struct flow_wildcards *wc = &match->wc;
- uint32_t ofpfw;
+ struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
+ ofpbuf_pull(&msg, sizeof *oh);
- /* Figure out most OpenFlow wildcards. */
- ofpfw = 0;
- if (!wc->masks.in_port.ofp_port) {
- ofpfw |= OFPFW10_IN_PORT;
- }
- if (!wc->masks.dl_type) {
- ofpfw |= OFPFW10_DL_TYPE;
- }
- if (!wc->masks.nw_proto) {
- ofpfw |= OFPFW10_NW_PROTO;
- }
- ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
- << OFPFW10_NW_SRC_SHIFT);
- ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
- << OFPFW10_NW_DST_SHIFT);
- if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
- ofpfw |= OFPFW10_NW_TOS;
- }
- if (!wc->masks.tp_src) {
- ofpfw |= OFPFW10_TP_SRC;
- }
- if (!wc->masks.tp_dst) {
- ofpfw |= OFPFW10_TP_DST;
- }
- if (eth_addr_is_zero(wc->masks.dl_src)) {
- ofpfw |= OFPFW10_DL_SRC;
- }
- if (eth_addr_is_zero(wc->masks.dl_dst)) {
- ofpfw |= OFPFW10_DL_DST;
- }
+ *allowed_versions = version_bitmap_from_version(oh->version);
- /* Translate VLANs. */
- ofmatch->dl_vlan = htons(0);
- ofmatch->dl_vlan_pcp = 0;
- if (match->wc.masks.vlan_tci == htons(0)) {
- ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
- } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
- && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
- ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
- } else {
- if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
- ofpfw |= OFPFW10_DL_VLAN;
- } else {
- ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
- }
+ bool ok = true;
+ while (msg.size) {
+ const struct ofp_hello_elem_header *oheh;
+ unsigned int len;
- if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
- ofpfw |= OFPFW10_DL_VLAN_PCP;
- } else {
- ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
+ if (msg.size < sizeof *oheh) {
+ return false;
}
- }
-
- /* Compose most of the match structure. */
- ofmatch->wildcards = htonl(ofpfw);
- ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
- ofmatch->dl_src = match->flow.dl_src;
- ofmatch->dl_dst = match->flow.dl_dst;
- ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
- ofmatch->nw_src = match->flow.nw_src;
- ofmatch->nw_dst = match->flow.nw_dst;
- ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
- ofmatch->nw_proto = match->flow.nw_proto;
- ofmatch->tp_src = match->flow.tp_src;
- ofmatch->tp_dst = match->flow.tp_dst;
- memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
- memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
-}
-
-enum ofperr
-ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
- 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;
+ oheh = msg.data;
+ len = ntohs(oheh->length);
+ if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
+ return false;
}
- return ofputil_match_from_ofp11_match(om, match);
- }
- case OFPMT_OXM:
- if (padded_match_len) {
- *padded_match_len = ROUND_UP(match_len, 8);
+ if (oheh->type != htons(OFPHET_VERSIONBITMAP)
+ || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
+ ok = false;
}
- return oxm_pull_match(buf, match);
-
- default:
- return OFPERR_OFPBMC_BAD_TYPE;
}
+
+ return ok;
}
-/* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
- * Returns 0 if successful, otherwise an OFPERR_* value. */
-enum ofperr
-ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
- struct match *match)
+/* Returns true if 'allowed_versions' needs to be accompanied by a version
+ * bitmap to be correctly expressed in an OFPT_HELLO message. */
+static bool
+should_send_version_bitmap(uint32_t allowed_versions)
{
- uint16_t wc = ntohl(ofmatch->wildcards);
- bool ipv4, arp, rarp;
-
- match_init_catchall(match);
-
- if (!(wc & OFPFW11_IN_PORT)) {
- ofp_port_t ofp_port;
- enum ofperr error;
-
- error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
- if (error) {
- return OFPERR_OFPBMC_BAD_VALUE;
- }
- match_set_in_port(match, ofp_port);
- }
-
- match_set_dl_src_masked(match, ofmatch->dl_src,
- eth_addr_invert(ofmatch->dl_src_mask));
- match_set_dl_dst_masked(match, ofmatch->dl_dst,
- eth_addr_invert(ofmatch->dl_dst_mask));
-
- if (!(wc & OFPFW11_DL_VLAN)) {
- if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
- /* Match only packets without a VLAN tag. */
- match->flow.vlan_tci = htons(0);
- match->wc.masks.vlan_tci = OVS_BE16_MAX;
- } else {
- if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
- /* Match any packet with a VLAN tag regardless of VID. */
- match->flow.vlan_tci = htons(VLAN_CFI);
- match->wc.masks.vlan_tci = htons(VLAN_CFI);
- } else if (ntohs(ofmatch->dl_vlan) < 4096) {
- /* Match only packets with the specified VLAN VID. */
- match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
- match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
- } else {
- /* Invalid VID. */
- return OFPERR_OFPBMC_BAD_VALUE;
- }
-
- if (!(wc & OFPFW11_DL_VLAN_PCP)) {
- if (ofmatch->dl_vlan_pcp <= 7) {
- match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
- << VLAN_PCP_SHIFT);
- match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
- } else {
- /* Invalid PCP. */
- return OFPERR_OFPBMC_BAD_VALUE;
- }
- }
- }
- }
-
- if (!(wc & OFPFW11_DL_TYPE)) {
- match_set_dl_type(match,
- ofputil_dl_type_from_openflow(ofmatch->dl_type));
- }
-
- ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
- arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
- rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
-
- if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
- if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
- /* Invalid TOS. */
- return OFPERR_OFPBMC_BAD_VALUE;
- }
-
- match_set_nw_dscp(match, ofmatch->nw_tos);
- }
-
- if (ipv4 || arp || rarp) {
- if (!(wc & OFPFW11_NW_PROTO)) {
- match_set_nw_proto(match, ofmatch->nw_proto);
- }
- match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
- match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
- }
-
-#define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
- if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
- switch (match->flow.nw_proto) {
- case IPPROTO_ICMP:
- /* "A.2.3 Flow Match Structures" in OF1.1 says:
- *
- * The tp_src and tp_dst fields will be ignored unless the
- * network protocol specified is as TCP, UDP or SCTP.
- *
- * but I'm pretty sure we should support ICMP too, otherwise
- * that's a regression from OF1.0. */
- if (!(wc & OFPFW11_TP_SRC)) {
- uint16_t icmp_type = ntohs(ofmatch->tp_src);
- if (icmp_type < 0x100) {
- match_set_icmp_type(match, icmp_type);
- } else {
- return OFPERR_OFPBMC_BAD_FIELD;
- }
- }
- if (!(wc & OFPFW11_TP_DST)) {
- uint16_t icmp_code = ntohs(ofmatch->tp_dst);
- if (icmp_code < 0x100) {
- match_set_icmp_code(match, icmp_code);
- } else {
- return OFPERR_OFPBMC_BAD_FIELD;
- }
- }
- break;
-
- case IPPROTO_TCP:
- case IPPROTO_UDP:
- case IPPROTO_SCTP:
- if (!(wc & (OFPFW11_TP_SRC))) {
- match_set_tp_src(match, ofmatch->tp_src);
- }
- if (!(wc & (OFPFW11_TP_DST))) {
- match_set_tp_dst(match, ofmatch->tp_dst);
- }
- break;
-
- default:
- /* OF1.1 says explicitly to ignore this. */
- break;
- }
- }
-
- if (eth_type_mpls(match->flow.dl_type)) {
- if (!(wc & OFPFW11_MPLS_LABEL)) {
- match_set_mpls_label(match, 0, ofmatch->mpls_label);
- }
- if (!(wc & OFPFW11_MPLS_TC)) {
- match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
- }
- }
-
- match_set_metadata_masked(match, ofmatch->metadata,
- ~ofmatch->metadata_mask);
-
- return 0;
+ return !is_pow2((allowed_versions >> 1) + 1);
}
-/* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
-void
-ofputil_match_to_ofp11_match(const struct match *match,
- struct ofp11_match *ofmatch)
+/* Create an OFPT_HELLO message that expresses support for the OpenFlow
+ * versions in the 'allowed_versions' bitmaps and returns the message. */
+struct ofpbuf *
+ofputil_encode_hello(uint32_t allowed_versions)
{
- uint32_t wc = 0;
-
- memset(ofmatch, 0, sizeof *ofmatch);
- ofmatch->omh.type = htons(OFPMT_STANDARD);
- ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
-
- if (!match->wc.masks.in_port.ofp_port) {
- wc |= OFPFW11_IN_PORT;
- } else {
- ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
- }
-
- ofmatch->dl_src = match->flow.dl_src;
- ofmatch->dl_src_mask = eth_addr_invert(match->wc.masks.dl_src);
- ofmatch->dl_dst = match->flow.dl_dst;
- ofmatch->dl_dst_mask = eth_addr_invert(match->wc.masks.dl_dst);
-
- if (match->wc.masks.vlan_tci == htons(0)) {
- wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
- } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
- && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
- ofmatch->dl_vlan = htons(OFPVID11_NONE);
- wc |= OFPFW11_DL_VLAN_PCP;
- } else {
- if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
- ofmatch->dl_vlan = htons(OFPVID11_ANY);
- } else {
- ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
- }
-
- if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
- wc |= OFPFW11_DL_VLAN_PCP;
- } else {
- ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
- }
- }
-
- if (!match->wc.masks.dl_type) {
- wc |= OFPFW11_DL_TYPE;
- } else {
- ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
- }
-
- if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
- wc |= OFPFW11_NW_TOS;
- } else {
- ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
- }
-
- if (!match->wc.masks.nw_proto) {
- wc |= OFPFW11_NW_PROTO;
- } else {
- ofmatch->nw_proto = match->flow.nw_proto;
- }
-
- ofmatch->nw_src = match->flow.nw_src;
- ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
- ofmatch->nw_dst = match->flow.nw_dst;
- ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
+ enum ofp_version ofp_version;
+ struct ofpbuf *msg;
- if (!match->wc.masks.tp_src) {
- wc |= OFPFW11_TP_SRC;
- } else {
- ofmatch->tp_src = match->flow.tp_src;
- }
+ ofp_version = leftmost_1bit_idx(allowed_versions);
+ msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
- if (!match->wc.masks.tp_dst) {
- wc |= OFPFW11_TP_DST;
- } else {
- ofmatch->tp_dst = match->flow.tp_dst;
- }
+ if (should_send_version_bitmap(allowed_versions)) {
+ struct ofp_hello_elem_header *oheh;
+ uint16_t map_len;
- if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
- wc |= OFPFW11_MPLS_LABEL;
- } else {
- ofmatch->mpls_label = htonl(mpls_lse_to_label(
- match->flow.mpls_lse[0]));
- }
+ map_len = sizeof allowed_versions;
+ oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
+ oheh->type = htons(OFPHET_VERSIONBITMAP);
+ oheh->length = htons(map_len + sizeof *oheh);
+ *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
- if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
- wc |= OFPFW11_MPLS_TC;
- } else {
- ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
+ ofpmsg_update_length(msg);
}
- ofmatch->metadata = match->flow.metadata;
- ofmatch->metadata_mask = ~match->wc.masks.metadata;
-
- ofmatch->wildcards = htonl(wc);
+ return msg;
}
-/* Returns the "typical" length of a match for 'protocol', for use in
- * estimating space to preallocate. */
-int
-ofputil_match_typical_len(enum ofputil_protocol protocol)
+void
+ofputil_hello_format(struct ds *string, const struct ofp_header *oh)
{
- switch (protocol) {
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID:
- return sizeof(struct ofp10_match);
-
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID:
- return NXM_TYPICAL_LEN;
+ uint32_t allowed_versions;
+ bool ok;
- case OFPUTIL_P_OF11_STD:
- return sizeof(struct ofp11_match);
+ ok = ofputil_decode_hello(oh, &allowed_versions);
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM:
- return NXM_TYPICAL_LEN;
+ ds_put_cstr(string, "\n version bitmap: ");
+ ofputil_format_version_bitmap(string, allowed_versions);
- default:
- OVS_NOT_REACHED();
+ if (!ok) {
+ ds_put_cstr(string, "\n unknown data in hello:\n");
+ ds_put_hex_dump(string, oh, ntohs(oh->length), 0, true);
}
}
-
-/* Appends to 'b' an struct ofp11_match_header followed by a match that
- * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
- * data appended out to a multiple of 8. 'protocol' must be one that is usable
- * in OpenFlow 1.1 or later.
- *
- * This function can cause 'b''s data to be reallocated.
- *
- * Returns the number of bytes appended to 'b', excluding the padding. Never
- * returns zero. */
-int
-ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
- enum ofputil_protocol protocol)
+\f
+/* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
+struct ofpbuf *
+ofputil_encode_echo_request(enum ofp_version ofp_version)
{
- switch (protocol) {
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID:
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID:
- OVS_NOT_REACHED();
-
- case OFPUTIL_P_OF11_STD: {
- struct ofp11_match *om;
-
- /* Make sure that no padding is needed. */
- BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
-
- om = ofpbuf_put_uninit(b, sizeof *om);
- ofputil_match_to_ofp11_match(match, om);
- return sizeof *om;
- }
-
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM:
- return oxm_put_match(b, match,
- ofputil_protocol_to_ofp_version(protocol));
- }
-
- OVS_NOT_REACHED();
+ return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
+ htonl(0), 0);
}
-/* Given a 'dl_type' value in the format used in struct flow, returns the
- * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
- * structure. */
-ovs_be16
-ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
+/* Creates and returns an OFPT_ECHO_REPLY message matching the
+ * OFPT_ECHO_REQUEST message in 'rq'. */
+struct ofpbuf *
+ofputil_encode_echo_reply(const struct ofp_header *rq)
{
- return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
- ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
- : flow_dl_type);
-}
+ struct ofpbuf rq_buf = ofpbuf_const_initializer(rq, ntohs(rq->length));
+ ofpraw_pull_assert(&rq_buf);
-/* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
- * structure, returns the corresponding 'dl_type' value for use in struct
- * flow. */
-ovs_be16
-ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
-{
- return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
- ? htons(FLOW_DL_TYPE_NONE)
- : ofp_dl_type);
+ struct ofpbuf *reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY,
+ rq, rq_buf.size);
+ ofpbuf_put(reply, rq_buf.data, rq_buf.size);
+ return reply;
}
-\f
-/* Protocols. */
-struct proto_abbrev {
- enum ofputil_protocol protocol;
- const char *name;
-};
-
-/* Most users really don't care about some of the differences between
- * protocols. These abbreviations help with that. */
-static const struct proto_abbrev proto_abbrevs[] = {
- { OFPUTIL_P_ANY, "any" },
- { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
- { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
- { OFPUTIL_P_ANY_OXM, "OXM" },
-};
-#define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
-
-enum ofputil_protocol ofputil_flow_dump_protocols[] = {
- OFPUTIL_P_OF15_OXM,
- OFPUTIL_P_OF14_OXM,
- OFPUTIL_P_OF13_OXM,
- OFPUTIL_P_OF12_OXM,
- OFPUTIL_P_OF11_STD,
- OFPUTIL_P_OF10_NXM,
- OFPUTIL_P_OF10_STD,
-};
-size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
-
-/* Returns the set of ofputil_protocols that are supported with the given
- * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
- * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
- * if 'version' is not supported or outside the valid range. */
-enum ofputil_protocol
-ofputil_protocols_from_ofp_version(enum ofp_version version)
+struct ofpbuf *
+ofputil_encode_barrier_request(enum ofp_version ofp_version)
{
- switch (version) {
- case OFP10_VERSION:
- return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
- case OFP11_VERSION:
- return OFPUTIL_P_OF11_STD;
- case OFP12_VERSION:
- return OFPUTIL_P_OF12_OXM;
- case OFP13_VERSION:
- return OFPUTIL_P_OF13_OXM;
- case OFP14_VERSION:
- return OFPUTIL_P_OF14_OXM;
+ enum ofpraw type;
+
+ switch (ofp_version) {
case OFP15_VERSION:
- return OFPUTIL_P_OF15_OXM;
- default:
- return 0;
- }
-}
+ case OFP14_VERSION:
+ case OFP13_VERSION:
+ case OFP12_VERSION:
+ case OFP11_VERSION:
+ type = OFPRAW_OFPT11_BARRIER_REQUEST;
+ break;
-/* Returns the ofputil_protocol that is initially in effect on an OpenFlow
- * connection that has negotiated the given 'version'. 'version' should
- * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
- * 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(enum ofp_version version)
-{
- return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
-}
+ case OFP10_VERSION:
+ type = OFPRAW_OFPT10_BARRIER_REQUEST;
+ break;
-/* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
- * etc.) that corresponds to 'protocol'. */
-enum ofp_version
-ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
-{
- switch (protocol) {
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID:
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID:
- return OFP10_VERSION;
- case OFPUTIL_P_OF11_STD:
- return OFP11_VERSION;
- case OFPUTIL_P_OF12_OXM:
- return OFP12_VERSION;
- case OFPUTIL_P_OF13_OXM:
- return OFP13_VERSION;
- case OFPUTIL_P_OF14_OXM:
- return OFP14_VERSION;
- case OFPUTIL_P_OF15_OXM:
- return OFP15_VERSION;
+ default:
+ OVS_NOT_REACHED();
}
- OVS_NOT_REACHED();
-}
-
-/* Returns a bitmap of OpenFlow versions that are supported by at
- * least one of the 'protocols'. */
-uint32_t
-ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
-{
- uint32_t bitmap = 0;
-
- for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
- enum ofputil_protocol protocol = rightmost_1bit(protocols);
-
- bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
- }
-
- return bitmap;
-}
-
-/* Returns the set of protocols that are supported on top of the
- * OpenFlow versions included in 'bitmap'. */
-enum ofputil_protocol
-ofputil_protocols_from_version_bitmap(uint32_t bitmap)
-{
- enum ofputil_protocol protocols = 0;
-
- for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
- enum ofp_version version = rightmost_1bit_idx(bitmap);
-
- protocols |= ofputil_protocols_from_ofp_version(version);
- }
-
- return protocols;
-}
-
-/* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
- * otherwise. */
-bool
-ofputil_protocol_is_valid(enum ofputil_protocol protocol)
-{
- return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
-}
-
-/* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
- * extension turned on or off if 'enable' is true or false, respectively.
- *
- * This extension is only useful for protocols whose "standard" version does
- * not allow specific tables to be modified. In particular, this is true of
- * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
- * specifies a table ID and so there is no need for such an extension. When
- * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
- * extension, this function just returns its 'protocol' argument unchanged
- * regardless of the value of 'enable'. */
-enum ofputil_protocol
-ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
-{
- switch (protocol) {
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID:
- return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
-
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID:
- return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
-
- case OFPUTIL_P_OF11_STD:
- return OFPUTIL_P_OF11_STD;
-
- case OFPUTIL_P_OF12_OXM:
- return OFPUTIL_P_OF12_OXM;
-
- case OFPUTIL_P_OF13_OXM:
- return OFPUTIL_P_OF13_OXM;
-
- case OFPUTIL_P_OF14_OXM:
- return OFPUTIL_P_OF14_OXM;
-
- case OFPUTIL_P_OF15_OXM:
- return OFPUTIL_P_OF15_OXM;
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-/* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
- * some extension to a standard protocol version, the return value is the
- * standard version of that protocol without any extension. If 'protocol' is a
- * standard protocol version, returns 'protocol' unchanged. */
-enum ofputil_protocol
-ofputil_protocol_to_base(enum ofputil_protocol protocol)
-{
- return ofputil_protocol_set_tid(protocol, false);
-}
-
-/* Returns 'new_base' with any extensions taken from 'cur'. */
-enum ofputil_protocol
-ofputil_protocol_set_base(enum ofputil_protocol cur,
- enum ofputil_protocol new_base)
-{
- bool tid = (cur & OFPUTIL_P_TID) != 0;
-
- switch (new_base) {
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
-
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
-
- case OFPUTIL_P_OF11_STD:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
-
- case OFPUTIL_P_OF12_OXM:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
-
- case OFPUTIL_P_OF13_OXM:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
-
- case OFPUTIL_P_OF14_OXM:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
-
- case OFPUTIL_P_OF15_OXM:
- return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-/* Returns a string form of 'protocol', if a simple form exists (that is, if
- * 'protocol' is either a single protocol or it is a combination of protocols
- * that have a single abbreviation). Otherwise, returns NULL. */
-const char *
-ofputil_protocol_to_string(enum ofputil_protocol protocol)
-{
- const struct proto_abbrev *p;
-
- /* Use a "switch" statement for single-bit names so that we get a compiler
- * warning if we forget any. */
- switch (protocol) {
- case OFPUTIL_P_OF10_NXM:
- return "NXM-table_id";
-
- case OFPUTIL_P_OF10_NXM_TID:
- return "NXM+table_id";
-
- case OFPUTIL_P_OF10_STD:
- return "OpenFlow10-table_id";
-
- case OFPUTIL_P_OF10_STD_TID:
- return "OpenFlow10+table_id";
-
- case OFPUTIL_P_OF11_STD:
- return "OpenFlow11";
-
- case OFPUTIL_P_OF12_OXM:
- return "OXM-OpenFlow12";
-
- case OFPUTIL_P_OF13_OXM:
- return "OXM-OpenFlow13";
-
- case OFPUTIL_P_OF14_OXM:
- return "OXM-OpenFlow14";
-
- case OFPUTIL_P_OF15_OXM:
- return "OXM-OpenFlow15";
- }
-
- /* Check abbreviations. */
- for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
- if (protocol == p->protocol) {
- return p->name;
- }
- }
-
- return NULL;
-}
-
-/* Returns a string that represents 'protocols'. The return value might be a
- * comma-separated list if 'protocols' doesn't have a simple name. The return
- * value is "none" if 'protocols' is 0.
- *
- * The caller must free the returned string (with free()). */
-char *
-ofputil_protocols_to_string(enum ofputil_protocol protocols)
-{
- struct ds s;
-
- ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
- if (protocols == 0) {
- return xstrdup("none");
- }
-
- ds_init(&s);
- while (protocols) {
- const struct proto_abbrev *p;
- int i;
-
- if (s.length) {
- ds_put_char(&s, ',');
- }
-
- for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
- if ((protocols & p->protocol) == p->protocol) {
- ds_put_cstr(&s, p->name);
- protocols &= ~p->protocol;
- goto match;
- }
- }
-
- for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
- enum ofputil_protocol bit = 1u << i;
-
- if (protocols & bit) {
- ds_put_cstr(&s, ofputil_protocol_to_string(bit));
- protocols &= ~bit;
- goto match;
- }
- }
- OVS_NOT_REACHED();
-
- match: ;
- }
- return ds_steal_cstr(&s);
-}
-
-static enum ofputil_protocol
-ofputil_protocol_from_string__(const char *s, size_t n)
-{
- const struct proto_abbrev *p;
- int i;
-
- for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
- enum ofputil_protocol bit = 1u << i;
- const char *name = ofputil_protocol_to_string(bit);
-
- if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
- return bit;
- }
- }
-
- for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
- if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
- return p->protocol;
- }
- }
-
- return 0;
-}
-
-/* Returns the nonempty set of protocols represented by 's', which can be a
- * single protocol name or abbreviation or a comma-separated list of them.
- *
- * Aborts the program with an error message if 's' is invalid. */
-enum ofputil_protocol
-ofputil_protocols_from_string(const char *s)
-{
- const char *orig_s = s;
- enum ofputil_protocol protocols;
-
- protocols = 0;
- while (*s) {
- enum ofputil_protocol p;
- size_t n;
-
- n = strcspn(s, ",");
- if (n == 0) {
- s++;
- continue;
- }
-
- p = ofputil_protocol_from_string__(s, n);
- if (!p) {
- ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
- }
- protocols |= p;
-
- s += n;
- }
-
- if (!protocols) {
- ovs_fatal(0, "%s: no flow protocol specified", orig_s);
- }
- return protocols;
-}
-
-enum ofp_version
-ofputil_version_from_string(const char *s)
-{
- if (!strcasecmp(s, "OpenFlow10")) {
- return OFP10_VERSION;
- }
- if (!strcasecmp(s, "OpenFlow11")) {
- return OFP11_VERSION;
- }
- if (!strcasecmp(s, "OpenFlow12")) {
- return OFP12_VERSION;
- }
- if (!strcasecmp(s, "OpenFlow13")) {
- return OFP13_VERSION;
- }
- if (!strcasecmp(s, "OpenFlow14")) {
- return OFP14_VERSION;
- }
- if (!strcasecmp(s, "OpenFlow15")) {
- return OFP15_VERSION;
- }
- return 0;
-}
-
-static bool
-is_delimiter(unsigned char c)
-{
- return isspace(c) || c == ',';
-}
-
-uint32_t
-ofputil_versions_from_string(const char *s)
-{
- size_t i = 0;
- uint32_t bitmap = 0;
-
- while (s[i]) {
- size_t j;
- int version;
- char *key;
-
- if (is_delimiter(s[i])) {
- i++;
- continue;
- }
- j = 0;
- while (s[i + j] && !is_delimiter(s[i + j])) {
- j++;
- }
- key = xmemdup0(s + i, j);
- version = ofputil_version_from_string(key);
- if (!version) {
- VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
- }
- free(key);
- bitmap |= 1u << version;
- i += j;
- }
-
- return bitmap;
-}
-
-uint32_t
-ofputil_versions_from_strings(char ** const s, size_t count)
-{
- uint32_t bitmap = 0;
-
- while (count--) {
- int version = ofputil_version_from_string(s[count]);
- if (!version) {
- VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
- } else {
- bitmap |= 1u << version;
- }
- }
-
- return bitmap;
-}
-
-const char *
-ofputil_version_to_string(enum ofp_version ofp_version)
-{
- switch (ofp_version) {
- case OFP10_VERSION:
- return "OpenFlow10";
- case OFP11_VERSION:
- return "OpenFlow11";
- case OFP12_VERSION:
- return "OpenFlow12";
- case OFP13_VERSION:
- return "OpenFlow13";
- case OFP14_VERSION:
- return "OpenFlow14";
- case OFP15_VERSION:
- return "OpenFlow15";
- default:
- OVS_NOT_REACHED();
- }
-}
-
-bool
-ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
-{
- switch (packet_in_format) {
- case NXPIF_STANDARD:
- case NXPIF_NXT_PACKET_IN:
- case NXPIF_NXT_PACKET_IN2:
- 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_STANDARD:
- return "standard";
- case NXPIF_NXT_PACKET_IN:
- return "nxt_packet_in";
- case NXPIF_NXT_PACKET_IN2:
- return "nxt_packet_in2";
- default:
- OVS_NOT_REACHED();
- }
-}
-
-int
-ofputil_packet_in_format_from_string(const char *s)
-{
- return (!strcmp(s, "standard") || !strcmp(s, "openflow10")
- ? NXPIF_STANDARD
- : !strcmp(s, "nxt_packet_in") || !strcmp(s, "nxm")
- ? NXPIF_NXT_PACKET_IN
- : !strcmp(s, "nxt_packet_in2")
- ? NXPIF_NXT_PACKET_IN2
- : -1);
-}
-
-void
-ofputil_format_version(struct ds *msg, enum ofp_version version)
-{
- ds_put_format(msg, "0x%02x", version);
-}
-
-void
-ofputil_format_version_name(struct ds *msg, enum ofp_version version)
-{
- ds_put_cstr(msg, ofputil_version_to_string(version));
-}
-
-static void
-ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
- void (*format_version)(struct ds *msg,
- enum ofp_version))
-{
- while (bitmap) {
- format_version(msg, raw_ctz(bitmap));
- bitmap = zero_rightmost_1bit(bitmap);
- if (bitmap) {
- ds_put_cstr(msg, ", ");
- }
- }
-}
-
-void
-ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
-{
- ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
-}
-
-void
-ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
-{
- ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
-}
-
-static bool
-ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
- uint32_t *allowed_versionsp)
-{
- uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
- const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
- uint32_t allowed_versions;
-
- if (!bitmap_len || bitmap_len % sizeof *bitmap) {
- return false;
- }
-
- /* Only use the first 32-bit element of the bitmap as that is all the
- * current implementation supports. Subsequent elements are ignored which
- * should have no effect on session negotiation until Open vSwitch supports
- * wire-protocol versions greater than 31.
- */
- allowed_versions = ntohl(bitmap[0]);
-
- if (allowed_versions & 1) {
- /* There's no OpenFlow version 0. */
- VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
- "version 0x00");
- allowed_versions &= ~1u;
- }
-
- if (!allowed_versions) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
- "version (between 0x01 and 0x1f)");
- return false;
- }
-
- *allowed_versionsp = allowed_versions;
- return true;
-}
-
-static uint32_t
-version_bitmap_from_version(uint8_t ofp_version)
-{
- return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
-}
-
-/* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
- * the set of OpenFlow versions for which 'oh' announces support.
- *
- * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
- * successful, and thus '*allowed_versions' is always initialized. However, it
- * returns false if 'oh' contains some data that could not be fully understood,
- * true if 'oh' was completely parsed. */
-bool
-ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
-{
- struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpbuf_pull(&msg, sizeof *oh);
-
- *allowed_versions = version_bitmap_from_version(oh->version);
-
- bool ok = true;
- while (msg.size) {
- const struct ofp_hello_elem_header *oheh;
- unsigned int len;
-
- if (msg.size < sizeof *oheh) {
- return false;
- }
-
- oheh = msg.data;
- len = ntohs(oheh->length);
- if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
- return false;
- }
-
- if (oheh->type != htons(OFPHET_VERSIONBITMAP)
- || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
- ok = false;
- }
- }
-
- return ok;
-}
-
-/* Returns true if 'allowed_versions' needs to be accompanied by a version
- * bitmap to be correctly expressed in an OFPT_HELLO message. */
-static bool
-should_send_version_bitmap(uint32_t allowed_versions)
-{
- return !is_pow2((allowed_versions >> 1) + 1);
-}
-
-/* Create an OFPT_HELLO message that expresses support for the OpenFlow
- * versions in the 'allowed_versions' bitmaps and returns the message. */
-struct ofpbuf *
-ofputil_encode_hello(uint32_t allowed_versions)
-{
- enum ofp_version ofp_version;
- struct ofpbuf *msg;
-
- ofp_version = leftmost_1bit_idx(allowed_versions);
- msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
-
- if (should_send_version_bitmap(allowed_versions)) {
- struct ofp_hello_elem_header *oheh;
- uint16_t map_len;
-
- map_len = sizeof allowed_versions;
- oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
- oheh->type = htons(OFPHET_VERSIONBITMAP);
- oheh->length = htons(map_len + sizeof *oheh);
- *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
-
- ofpmsg_update_length(msg);
- }
-
- return msg;
-}
-
-/* Returns an OpenFlow message that, sent on an OpenFlow connection whose
- * protocol is 'current', at least partly transitions the protocol to 'want'.
- * Stores in '*next' the protocol that will be in effect on the OpenFlow
- * connection if the switch processes the returned message correctly. (If
- * '*next != want' then the caller will have to iterate.)
- *
- * If 'current == want', or if it is not possible to transition from 'current'
- * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
- * protocol versions), returns NULL and stores 'current' in '*next'. */
-struct ofpbuf *
-ofputil_encode_set_protocol(enum ofputil_protocol current,
- enum ofputil_protocol want,
- enum ofputil_protocol *next)
-{
- enum ofp_version cur_version, want_version;
- enum ofputil_protocol cur_base, want_base;
- bool cur_tid, want_tid;
-
- cur_version = ofputil_protocol_to_ofp_version(current);
- want_version = ofputil_protocol_to_ofp_version(want);
- if (cur_version != want_version) {
- *next = current;
- return NULL;
- }
-
- cur_base = ofputil_protocol_to_base(current);
- want_base = ofputil_protocol_to_base(want);
- if (cur_base != want_base) {
- *next = ofputil_protocol_set_base(current, want_base);
-
- switch (want_base) {
- case OFPUTIL_P_OF10_NXM:
- return ofputil_encode_nx_set_flow_format(NXFF_NXM);
-
- case OFPUTIL_P_OF10_STD:
- return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
-
- case OFPUTIL_P_OF11_STD:
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM:
- /* There is only one variant of each OpenFlow 1.1+ protocol, and we
- * verified above that we're not trying to change versions. */
- OVS_NOT_REACHED();
-
- case OFPUTIL_P_OF10_STD_TID:
- case OFPUTIL_P_OF10_NXM_TID:
- OVS_NOT_REACHED();
- }
- }
-
- cur_tid = (current & OFPUTIL_P_TID) != 0;
- want_tid = (want & OFPUTIL_P_TID) != 0;
- if (cur_tid != want_tid) {
- *next = ofputil_protocol_set_tid(current, want_tid);
- return ofputil_make_flow_mod_table_id(want_tid);
- }
-
- ovs_assert(current == want);
-
- *next = current;
- return NULL;
-}
-
-/* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
- * format to 'nxff'. */
-struct ofpbuf *
-ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
-{
- struct nx_set_flow_format *sff;
- struct ofpbuf *msg;
-
- ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
-
- msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
- sff = ofpbuf_put_zeros(msg, sizeof *sff);
- sff->format = htonl(nxff);
-
- return msg;
-}
-
-/* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
- * otherwise. */
-enum ofputil_protocol
-ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
-{
- switch (flow_format) {
- case NXFF_OPENFLOW10:
- return OFPUTIL_P_OF10_STD;
-
- case NXFF_NXM:
- return OFPUTIL_P_OF10_NXM;
-
- default:
- return 0;
- }
-}
-
-/* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
-bool
-ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
-{
- return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
-}
-
-/* Returns a string version of 'flow_format', which must be a valid NXFF_*
- * value. */
-const char *
-ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
-{
- switch (flow_format) {
- case NXFF_OPENFLOW10:
- return "openflow10";
- case NXFF_NXM:
- return "nxm";
- default:
- OVS_NOT_REACHED();
- }
-}
-
-struct ofpbuf *
-ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
- enum nx_packet_in_format packet_in_format)
-{
- struct nx_set_packet_in_format *spif;
- struct ofpbuf *msg;
-
- msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
- spif = ofpbuf_put_zeros(msg, sizeof *spif);
- 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 nx_flow_mod_table_id *nfmti;
- struct ofpbuf *msg;
-
- msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
- nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
- nfmti->set = flow_mod_table_id;
- return msg;
-}
-
-struct ofputil_flow_mod_flag {
- uint16_t raw_flag;
- enum ofp_version min_version, max_version;
- enum ofputil_flow_mod_flags flag;
-};
-
-static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
- { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
- { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
- { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
- OFPUTIL_FF_EMERG },
- { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
- { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
- { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
- { 0, 0, 0, 0 },
-};
-
-static enum ofperr
-ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
- enum ofp_flow_mod_command command,
- enum ofp_version version,
- enum ofputil_flow_mod_flags *flagsp)
-{
- uint16_t raw_flags = ntohs(raw_flags_);
- const struct ofputil_flow_mod_flag *f;
-
- *flagsp = 0;
- for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
- if (raw_flags & f->raw_flag
- && version >= f->min_version
- && (!f->max_version || version <= f->max_version)) {
- raw_flags &= ~f->raw_flag;
- *flagsp |= f->flag;
- }
- }
-
- /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
- * never do.
- *
- * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
- * resets counters. */
- if ((version == OFP10_VERSION || version == OFP11_VERSION)
- && command == OFPFC_ADD) {
- *flagsp |= OFPUTIL_FF_RESET_COUNTS;
- }
-
- return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
-}
-
-static ovs_be16
-ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
- enum ofp_version version)
-{
- const struct ofputil_flow_mod_flag *f;
- uint16_t raw_flags;
-
- raw_flags = 0;
- for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
- if (f->flag & flags
- && version >= f->min_version
- && (!f->max_version || version <= f->max_version)) {
- raw_flags |= f->raw_flag;
- }
- }
-
- return htons(raw_flags);
-}
-
-/* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
- * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
- * code.
- *
- * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
- * The caller must initialize 'ofpacts' and retains ownership of it.
- * 'fm->ofpacts' will point into the 'ofpacts' buffer.
- *
- * Does not validate the flow_mod actions. The caller should do that, with
- * ofpacts_check(). */
-enum ofperr
-ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
- const struct ofp_header *oh,
- enum ofputil_protocol protocol,
- struct ofpbuf *ofpacts,
- ofp_port_t max_port, uint8_t max_table)
-{
- ovs_be16 raw_flags;
- enum ofperr error;
-
- /* Ignored for non-delete actions */
- fm->delete_reason = OFPRR_DELETE;
-
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPT11_FLOW_MOD) {
- /* Standard OpenFlow 1.1+ flow_mod. */
- const struct ofp11_flow_mod *ofm;
-
- ofm = ofpbuf_pull(&b, sizeof *ofm);
-
- error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
- if (error) {
- return error;
- }
-
- /* Translate the message. */
- fm->priority = ntohs(ofm->priority);
- if (ofm->command == OFPFC_ADD
- || (oh->version == OFP11_VERSION
- && (ofm->command == OFPFC_MODIFY ||
- ofm->command == OFPFC_MODIFY_STRICT)
- && ofm->cookie_mask == htonll(0))) {
- /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
- * not match on the cookie is treated as an "add" if there is no
- * match. */
- fm->cookie = htonll(0);
- fm->cookie_mask = htonll(0);
- fm->new_cookie = ofm->cookie;
- } else {
- fm->cookie = ofm->cookie;
- fm->cookie_mask = ofm->cookie_mask;
- fm->new_cookie = OVS_BE64_MAX;
- }
- fm->modify_cookie = false;
- fm->command = ofm->command;
-
- /* Get table ID.
- *
- * OF1.1 entirely forbids table_id == OFPTT_ALL.
- * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
- fm->table_id = ofm->table_id;
- if (fm->table_id == OFPTT_ALL
- && (oh->version == OFP11_VERSION
- || (ofm->command != OFPFC_DELETE &&
- ofm->command != OFPFC_DELETE_STRICT))) {
- return OFPERR_OFPFMFC_BAD_TABLE_ID;
- }
-
- fm->idle_timeout = ntohs(ofm->idle_timeout);
- fm->hard_timeout = ntohs(ofm->hard_timeout);
- if (oh->version >= OFP14_VERSION && ofm->command == OFPFC_ADD) {
- fm->importance = ntohs(ofm->importance);
- } else {
- fm->importance = 0;
- }
- fm->buffer_id = ntohl(ofm->buffer_id);
- error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
- if (error) {
- return error;
- }
-
- fm->out_group = (ofm->command == OFPFC_DELETE ||
- ofm->command == OFPFC_DELETE_STRICT
- ? ntohl(ofm->out_group)
- : OFPG_ANY);
- raw_flags = ofm->flags;
- } else {
- uint16_t command;
-
- if (raw == OFPRAW_OFPT10_FLOW_MOD) {
- /* Standard OpenFlow 1.0 flow_mod. */
- const struct ofp10_flow_mod *ofm;
-
- /* Get the ofp10_flow_mod. */
- ofm = ofpbuf_pull(&b, sizeof *ofm);
-
- /* Translate the rule. */
- ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
- ofputil_normalize_match(&fm->match);
-
- /* OpenFlow 1.0 says that exact-match rules have to have the
- * highest possible priority. */
- fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
- ? ntohs(ofm->priority)
- : UINT16_MAX);
-
- /* 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->importance = 0;
- fm->buffer_id = ntohl(ofm->buffer_id);
- fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
- fm->out_group = OFPG_ANY;
- raw_flags = ofm->flags;
- } else if (raw == OFPRAW_NXT_FLOW_MOD) {
- /* Nicira extended flow_mod. */
- const struct nx_flow_mod *nfm;
-
- /* Dissect the message. */
- nfm = ofpbuf_pull(&b, sizeof *nfm);
- error = nx_pull_match(&b, ntohs(nfm->match_len),
- &fm->match, &fm->cookie, &fm->cookie_mask);
- 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->priority = ntohs(nfm->priority);
- fm->new_cookie = nfm->cookie;
- fm->idle_timeout = ntohs(nfm->idle_timeout);
- fm->hard_timeout = ntohs(nfm->hard_timeout);
- fm->importance = 0;
- fm->buffer_id = ntohl(nfm->buffer_id);
- fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
- fm->out_group = OFPG_ANY;
- raw_flags = nfm->flags;
- } else {
- OVS_NOT_REACHED();
- }
-
- fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
- if (protocol & OFPUTIL_P_TID) {
- fm->command = command & 0xff;
- fm->table_id = command >> 8;
- } else {
- if (command > 0xff) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "flow_mod has explicit table_id "
- "but flow_mod_table_id extension is not enabled");
- }
- fm->command = command;
- fm->table_id = 0xff;
- }
- }
-
- if (fm->command > OFPFC_DELETE_STRICT) {
- return OFPERR_OFPFMFC_BAD_COMMAND;
- }
-
- error = ofpacts_pull_openflow_instructions(&b, b.size,
- oh->version, ofpacts);
- if (error) {
- return error;
- }
- fm->ofpacts = ofpacts->data;
- fm->ofpacts_len = ofpacts->size;
-
- error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
- oh->version, &fm->flags);
- if (error) {
- return error;
- }
-
- if (fm->flags & OFPUTIL_FF_EMERG) {
- /* We do not support the OpenFlow 1.0 emergency flow cache, which
- * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
- *
- * OpenFlow 1.0 specifies the error code to use when idle_timeout
- * or hard_timeout is nonzero. Otherwise, there is no good error
- * code, so just state that the flow table is full. */
- return (fm->hard_timeout || fm->idle_timeout
- ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
- : OFPERR_OFPFMFC_TABLE_FULL);
- }
-
- return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
- &fm->match.flow, max_port,
- fm->table_id, max_table, protocol);
-}
-
-static enum ofperr
-ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
- struct ofpbuf *bands)
-{
- const struct ofp13_meter_band_header *ombh;
- struct ofputil_meter_band *mb;
- uint16_t n = 0;
-
- ombh = ofpbuf_try_pull(msg, len);
- if (!ombh) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- while (len >= sizeof (struct ofp13_meter_band_drop)) {
- size_t ombh_len = ntohs(ombh->len);
- /* All supported band types have the same length. */
- if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- mb = ofpbuf_put_uninit(bands, sizeof *mb);
- mb->type = ntohs(ombh->type);
- if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
- return OFPERR_OFPMMFC_BAD_BAND;
- }
- mb->rate = ntohl(ombh->rate);
- mb->burst_size = ntohl(ombh->burst_size);
- mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
- ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
- n++;
- len -= ombh_len;
- ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
- (char *) ombh + ombh_len);
- }
- if (len) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- *n_bands = n;
- return 0;
-}
-
-enum ofperr
-ofputil_decode_meter_mod(const struct ofp_header *oh,
- struct ofputil_meter_mod *mm,
- struct ofpbuf *bands)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&b);
- const struct ofp13_meter_mod *omm = ofpbuf_pull(&b, sizeof *omm);
-
- /* Translate the message. */
- mm->command = ntohs(omm->command);
- if (mm->command != OFPMC13_ADD &&
- mm->command != OFPMC13_MODIFY &&
- mm->command != OFPMC13_DELETE) {
- return OFPERR_OFPMMFC_BAD_COMMAND;
- }
- mm->meter.meter_id = ntohl(omm->meter_id);
-
- if (mm->command == OFPMC13_DELETE) {
- mm->meter.flags = 0;
- mm->meter.n_bands = 0;
- mm->meter.bands = NULL;
- } else {
- enum ofperr error;
-
- mm->meter.flags = ntohs(omm->flags);
- if (mm->meter.flags & OFPMF13_KBPS &&
- mm->meter.flags & OFPMF13_PKTPS) {
- return OFPERR_OFPMMFC_BAD_FLAGS;
- }
- mm->meter.bands = bands->data;
-
- error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
- if (error) {
- return error;
- }
- }
- return 0;
-}
-
-void
-ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
-{
- const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
- *meter_id = ntohl(omr->meter_id);
-}
-
-struct ofpbuf *
-ofputil_encode_meter_request(enum ofp_version ofp_version,
- enum ofputil_meter_request_type type,
- uint32_t meter_id)
-{
- struct ofpbuf *msg;
-
- enum ofpraw raw;
-
- switch (type) {
- case OFPUTIL_METER_CONFIG:
- raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
- break;
- case OFPUTIL_METER_STATS:
- raw = OFPRAW_OFPST13_METER_REQUEST;
- break;
- default:
- case OFPUTIL_METER_FEATURES:
- raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
- break;
- }
-
- msg = ofpraw_alloc(raw, ofp_version, 0);
-
- if (type != OFPUTIL_METER_FEATURES) {
- struct ofp13_meter_multipart_request *omr;
- omr = ofpbuf_put_zeros(msg, sizeof *omr);
- omr->meter_id = htonl(meter_id);
- }
- return msg;
-}
-
-static void
-ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
- struct ofpbuf *msg)
-{
- uint16_t n = 0;
-
- for (n = 0; n < n_bands; ++n) {
- /* Currently all band types have same size. */
- struct ofp13_meter_band_dscp_remark *ombh;
- size_t ombh_len = sizeof *ombh;
-
- ombh = ofpbuf_put_zeros(msg, ombh_len);
-
- ombh->type = htons(mb->type);
- ombh->len = htons(ombh_len);
- ombh->rate = htonl(mb->rate);
- ombh->burst_size = htonl(mb->burst_size);
- ombh->prec_level = mb->prec_level;
-
- mb++;
- }
-}
-
-/* Encode a meter stat for 'mc' and append it to 'replies'. */
-void
-ofputil_append_meter_config(struct ovs_list *replies,
- const struct ofputil_meter_config *mc)
-{
- struct ofpbuf *msg = ofpbuf_from_list(ovs_list_back(replies));
- size_t start_ofs = msg->size;
- struct ofp13_meter_config *reply;
-
- ofpbuf_put_uninit(msg, sizeof *reply);
- ofputil_put_bands(mc->n_bands, mc->bands, msg);
-
- reply = ofpbuf_at_assert(msg, start_ofs, sizeof *reply);
- reply->flags = htons(mc->flags);
- reply->meter_id = htonl(mc->meter_id);
- reply->length = htons(msg->size - start_ofs);
-
- ofpmp_postappend(replies, start_ofs);
-}
-
-/* Encode a meter stat for 'ms' and append it to 'replies'. */
-void
-ofputil_append_meter_stats(struct ovs_list *replies,
- const struct ofputil_meter_stats *ms)
-{
- struct ofp13_meter_stats *reply;
- uint16_t n = 0;
- uint16_t len;
-
- len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
- reply = ofpmp_append(replies, len);
-
- reply->meter_id = htonl(ms->meter_id);
- reply->len = htons(len);
- memset(reply->pad, 0, sizeof reply->pad);
- reply->flow_count = htonl(ms->flow_count);
- reply->packet_in_count = htonll(ms->packet_in_count);
- reply->byte_in_count = htonll(ms->byte_in_count);
- reply->duration_sec = htonl(ms->duration_sec);
- reply->duration_nsec = htonl(ms->duration_nsec);
-
- for (n = 0; n < ms->n_bands; ++n) {
- const struct ofputil_meter_band_stats *src = &ms->bands[n];
- struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
-
- dst->packet_band_count = htonll(src->packet_count);
- dst->byte_band_count = htonll(src->byte_count);
- }
-}
-
-/* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
- * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
- * 'bands'. The caller must have initialized 'bands' and retains ownership of
- * it across the call.
- *
- * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
- * message. Calling this function multiple times for a single 'msg' iterates
- * through the replies. 'bands' is cleared for each reply.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_meter_config(struct ofpbuf *msg,
- struct ofputil_meter_config *mc,
- struct ofpbuf *bands)
-{
- const struct ofp13_meter_config *omc;
- enum ofperr err;
-
- /* Pull OpenFlow headers for the first call. */
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- omc = ofpbuf_try_pull(msg, sizeof *omc);
- if (!omc) {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
- msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- ofpbuf_clear(bands);
- err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
- &mc->n_bands, bands);
- if (err) {
- return err;
- }
- mc->meter_id = ntohl(omc->meter_id);
- mc->flags = ntohs(omc->flags);
- mc->bands = bands->data;
-
- return 0;
-}
-
-static enum ofperr
-ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
- struct ofpbuf *bands)
-{
- const struct ofp13_meter_band_stats *ombs;
- struct ofputil_meter_band_stats *mbs;
- uint16_t n, i;
-
- ombs = ofpbuf_try_pull(msg, len);
- if (!ombs) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- n = len / sizeof *ombs;
- if (len != n * sizeof *ombs) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- mbs = ofpbuf_put_uninit(bands, len);
-
- for (i = 0; i < n; ++i) {
- mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
- mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
- }
- *n_bands = n;
- return 0;
-}
-
-/* Converts an OFPMP_METER reply in 'msg' into an abstract
- * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
- * decoded into 'bands'.
- *
- * Multiple OFPMP_METER replies can be packed into a single OpenFlow
- * message. Calling this function multiple times for a single 'msg' iterates
- * through the replies. 'bands' is cleared for each reply.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_meter_stats(struct ofpbuf *msg,
- struct ofputil_meter_stats *ms,
- struct ofpbuf *bands)
-{
- const struct ofp13_meter_stats *oms;
- enum ofperr err;
-
- /* Pull OpenFlow headers for the first call. */
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- oms = ofpbuf_try_pull(msg, sizeof *oms);
- if (!oms) {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
- msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- ofpbuf_clear(bands);
- err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
- &ms->n_bands, bands);
- if (err) {
- return err;
- }
- ms->meter_id = ntohl(oms->meter_id);
- ms->flow_count = ntohl(oms->flow_count);
- ms->packet_in_count = ntohll(oms->packet_in_count);
- ms->byte_in_count = ntohll(oms->byte_in_count);
- ms->duration_sec = ntohl(oms->duration_sec);
- ms->duration_nsec = ntohl(oms->duration_nsec);
- ms->bands = bands->data;
-
- return 0;
-}
-
-void
-ofputil_decode_meter_features(const struct ofp_header *oh,
- struct ofputil_meter_features *mf)
-{
- const struct ofp13_meter_features *omf = ofpmsg_body(oh);
-
- mf->max_meters = ntohl(omf->max_meter);
- mf->band_types = ntohl(omf->band_types);
- mf->capabilities = ntohl(omf->capabilities);
- mf->max_bands = omf->max_bands;
- mf->max_color = omf->max_color;
-}
-
-struct ofpbuf *
-ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
- const struct ofp_header *request)
-{
- struct ofpbuf *reply;
- struct ofp13_meter_features *omf;
-
- reply = ofpraw_alloc_stats_reply(request, 0);
- omf = ofpbuf_put_zeros(reply, sizeof *omf);
-
- omf->max_meter = htonl(mf->max_meters);
- omf->band_types = htonl(mf->band_types);
- omf->capabilities = htonl(mf->capabilities);
- omf->max_bands = mf->max_bands;
- omf->max_color = mf->max_color;
-
- return reply;
-}
-
-struct ofpbuf *
-ofputil_encode_meter_mod(enum ofp_version ofp_version,
- const struct ofputil_meter_mod *mm)
-{
- struct ofpbuf *msg;
-
- struct ofp13_meter_mod *omm;
-
- msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
- NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
- omm = ofpbuf_put_zeros(msg, sizeof *omm);
- omm->command = htons(mm->command);
- if (mm->command != OFPMC13_DELETE) {
- omm->flags = htons(mm->meter.flags);
- }
- omm->meter_id = htonl(mm->meter.meter_id);
-
- ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
-
- ofpmsg_update_length(msg);
- return msg;
-}
-
-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)
-{
- enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
- ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
- struct ofpbuf *msg;
-
- switch (protocol) {
- case OFPUTIL_P_OF11_STD:
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM: {
- struct ofp11_flow_mod *ofm;
- int tailroom;
-
- tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
- msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
- ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
- if ((protocol == OFPUTIL_P_OF11_STD
- && (fm->command == OFPFC_MODIFY ||
- fm->command == OFPFC_MODIFY_STRICT)
- && fm->cookie_mask == htonll(0))
- || fm->command == OFPFC_ADD) {
- ofm->cookie = fm->new_cookie;
- } else {
- ofm->cookie = fm->cookie & fm->cookie_mask;
- }
- ofm->cookie_mask = fm->cookie_mask;
- if (fm->table_id != OFPTT_ALL
- || (protocol != OFPUTIL_P_OF11_STD
- && (fm->command == OFPFC_DELETE ||
- fm->command == OFPFC_DELETE_STRICT))) {
- ofm->table_id = fm->table_id;
- } else {
- ofm->table_id = 0;
- }
- ofm->command = fm->command;
- ofm->idle_timeout = htons(fm->idle_timeout);
- ofm->hard_timeout = htons(fm->hard_timeout);
- ofm->priority = htons(fm->priority);
- ofm->buffer_id = htonl(fm->buffer_id);
- ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
- ofm->out_group = htonl(fm->out_group);
- ofm->flags = raw_flags;
- if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
- ofm->importance = htons(fm->importance);
- } else {
- ofm->importance = 0;
- }
- ofputil_put_ofp11_match(msg, &fm->match, protocol);
- ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
- version);
- break;
- }
-
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_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_match_to_ofp10_match(&fm->match, &ofm->match);
- ofm->cookie = fm->new_cookie;
- 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->priority);
- ofm->buffer_id = htonl(fm->buffer_id);
- ofm->out_port = htons(ofp_to_u16(fm->out_port));
- ofm->flags = raw_flags;
- ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
- version);
- break;
- }
-
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_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 = ofputil_tid_command(fm, protocol);
- nfm->cookie = fm->new_cookie;
- match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
- nfm = msg->msg;
- nfm->idle_timeout = htons(fm->idle_timeout);
- nfm->hard_timeout = htons(fm->hard_timeout);
- nfm->priority = htons(fm->priority);
- nfm->buffer_id = htonl(fm->buffer_id);
- nfm->out_port = htons(ofp_to_u16(fm->out_port));
- nfm->flags = raw_flags;
- nfm->match_len = htons(match_len);
- ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
- version);
- break;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-
- ofpmsg_update_length(msg);
- return msg;
-}
-
-static enum ofperr
-ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
- const struct ofp10_flow_stats_request *ofsr,
- bool aggregate)
-{
- fsr->aggregate = aggregate;
- ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
- fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
- fsr->out_group = OFPG_ANY;
- fsr->table_id = ofsr->table_id;
- fsr->cookie = fsr->cookie_mask = htonll(0);
-
- return 0;
-}
-
-static enum ofperr
-ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
- struct ofpbuf *b, bool aggregate)
-{
- const struct ofp11_flow_stats_request *ofsr;
- enum ofperr error;
-
- ofsr = ofpbuf_pull(b, sizeof *ofsr);
- fsr->aggregate = aggregate;
- fsr->table_id = ofsr->table_id;
- error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
- if (error) {
- return error;
- }
- fsr->out_group = ntohl(ofsr->out_group);
- fsr->cookie = ofsr->cookie;
- fsr->cookie_mask = ofsr->cookie_mask;
- error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
- if (error) {
- return error;
- }
-
- return 0;
-}
-
-static enum ofperr
-ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
- struct ofpbuf *b, bool aggregate)
-{
- const struct nx_flow_stats_request *nfsr;
- enum ofperr error;
-
- nfsr = ofpbuf_pull(b, sizeof *nfsr);
- error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
- &fsr->cookie, &fsr->cookie_mask);
- if (error) {
- return error;
- }
- if (b->size) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- fsr->aggregate = aggregate;
- fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
- fsr->out_group = OFPG_ANY;
- fsr->table_id = nfsr->table_id;
-
- return 0;
-}
-
-/* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
- * 'port' and 'queue', suitable for OpenFlow version 'version'.
- *
- * 'queue' is honored only for OpenFlow 1.4 and later; older versions always
- * request all queues. */
-struct ofpbuf *
-ofputil_encode_queue_get_config_request(enum ofp_version version,
- ofp_port_t port,
- uint32_t queue)
-{
- struct ofpbuf *request;
-
- if (version == OFP10_VERSION) {
- struct ofp10_queue_get_config_request *qgcr10;
-
- request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
- version, 0);
- qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
- qgcr10->port = htons(ofp_to_u16(port));
- } else if (version < OFP14_VERSION) {
- struct ofp11_queue_get_config_request *qgcr11;
-
- request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
- version, 0);
- qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
- qgcr11->port = ofputil_port_to_ofp11(port);
- } else {
- struct ofp14_queue_desc_request *qdr14;
-
- request = ofpraw_alloc(OFPRAW_OFPST14_QUEUE_DESC_REQUEST,
- version, 0);
- qdr14 = ofpbuf_put_zeros(request, sizeof *qdr14);
- qdr14->port = ofputil_port_to_ofp11(port);
- qdr14->queue = htonl(queue);
- }
-
- return request;
-}
-
-/* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
- * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
- * code. */
-enum ofperr
-ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
- ofp_port_t *port, uint32_t *queue)
-{
- const struct ofp10_queue_get_config_request *qgcr10;
- const struct ofp11_queue_get_config_request *qgcr11;
- const struct ofp14_queue_desc_request *qdr14;
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
-
- switch ((int) raw) {
- case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
- qgcr10 = b.data;
- *port = u16_to_ofp(ntohs(qgcr10->port));
- *queue = OFPQ_ALL;
- break;
-
- case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
- qgcr11 = b.data;
- *queue = OFPQ_ALL;
- enum ofperr error = ofputil_port_from_ofp11(qgcr11->port, port);
- if (error || *port == OFPP_ANY) {
- return error;
- }
- break;
-
- case OFPRAW_OFPST14_QUEUE_DESC_REQUEST:
- qdr14 = b.data;
- *queue = ntohl(qdr14->queue);
- return ofputil_port_from_ofp11(qdr14->port, port);
-
- default:
- OVS_NOT_REACHED();
- }
-
- return (ofp_to_u16(*port) < ofp_to_u16(OFPP_MAX)
- ? 0
- : OFPERR_OFPQOFC_BAD_PORT);
-}
-
-/* Constructs and returns the beginning of a reply to
- * OFPT_QUEUE_GET_CONFIG_REQUEST or OFPMP_QUEUE_DESC request 'oh'. The caller
- * may append information about individual queues with
- * ofputil_append_queue_get_config_reply(). */
-void
-ofputil_start_queue_get_config_reply(const struct ofp_header *request,
- struct ovs_list *replies)
-{
- struct ofpbuf *reply;
- enum ofperr error;
- ofp_port_t port;
- uint32_t queue;
-
- error = ofputil_decode_queue_get_config_request(request, &port, &queue);
- ovs_assert(!error);
-
- enum ofpraw raw = ofpraw_decode_assert(request);
- switch ((int) raw) {
- case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
- reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
- request, 0);
- struct ofp10_queue_get_config_reply *qgcr10
- = ofpbuf_put_zeros(reply, sizeof *qgcr10);
- qgcr10->port = htons(ofp_to_u16(port));
- break;
-
- case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
- reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
- request, 0);
- struct ofp11_queue_get_config_reply *qgcr11
- = ofpbuf_put_zeros(reply, sizeof *qgcr11);
- qgcr11->port = ofputil_port_to_ofp11(port);
- break;
-
- case OFPRAW_OFPST14_QUEUE_DESC_REQUEST:
- reply = ofpraw_alloc_stats_reply(request, 0);
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-
- ovs_list_init(replies);
- ovs_list_push_back(replies, &reply->list_node);
-}
-
-static void
-put_ofp10_queue_rate(struct ofpbuf *reply,
- enum ofp10_queue_properties property, uint16_t rate)
-{
- if (rate != UINT16_MAX) {
- struct ofp10_queue_prop_rate *oqpr;
-
- oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
- oqpr->prop_header.property = htons(property);
- oqpr->prop_header.len = htons(sizeof *oqpr);
- oqpr->rate = htons(rate);
- }
-}
-
-static void
-put_ofp14_queue_rate(struct ofpbuf *reply,
- enum ofp14_queue_desc_prop_type type, uint16_t rate)
-{
- if (rate != UINT16_MAX) {
- ofpprop_put_u16(reply, type, rate);
- }
-}
-
-void
-ofputil_append_queue_get_config_reply(const struct ofputil_queue_config *qc,
- struct ovs_list *replies)
-{
- enum ofp_version ofp_version = ofpmp_version(replies);
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- size_t start_ofs = reply->size;
- size_t len_ofs;
- ovs_be16 *len;
-
- if (ofp_version < OFP14_VERSION) {
- if (ofp_version < OFP12_VERSION) {
- struct ofp10_packet_queue *opq10;
-
- opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
- opq10->queue_id = htonl(qc->queue);
- len_ofs = (char *) &opq10->len - (char *) reply->data;
- } else {
- struct ofp12_packet_queue *opq12;
-
- opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
- opq12->port = ofputil_port_to_ofp11(qc->port);
- opq12->queue_id = htonl(qc->queue);
- len_ofs = (char *) &opq12->len - (char *) reply->data;
- }
-
- put_ofp10_queue_rate(reply, OFPQT10_MIN_RATE, qc->min_rate);
- put_ofp10_queue_rate(reply, OFPQT11_MAX_RATE, qc->max_rate);
- } else {
- struct ofp14_queue_desc *oqd = ofpbuf_put_zeros(reply, sizeof *oqd);
- oqd->port_no = ofputil_port_to_ofp11(qc->port);
- oqd->queue_id = htonl(qc->queue);
- len_ofs = (char *) &oqd->len - (char *) reply->data;
- put_ofp14_queue_rate(reply, OFPQDPT14_MIN_RATE, qc->min_rate);
- put_ofp14_queue_rate(reply, OFPQDPT14_MAX_RATE, qc->max_rate);
- }
-
- len = ofpbuf_at(reply, len_ofs, sizeof *len);
- *len = htons(reply->size - start_ofs);
-
- if (ofp_version >= OFP14_VERSION) {
- ofpmp_postappend(replies, start_ofs);
- }
-}
-
-static enum ofperr
-parse_ofp10_queue_rate(const struct ofp10_queue_prop_header *hdr,
- uint16_t *rate)
-{
- const struct ofp10_queue_prop_rate *oqpr;
-
- if (hdr->len == htons(sizeof *oqpr)) {
- oqpr = (const struct ofp10_queue_prop_rate *) hdr;
- *rate = ntohs(oqpr->rate);
- return 0;
- } else {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-}
-
-static int
-ofputil_pull_queue_get_config_reply10(struct ofpbuf *msg,
- struct ofputil_queue_config *queue)
-{
- const struct ofp_header *oh = msg->header;
- unsigned int opq_len; /* Length of protocol-specific queue header. */
- unsigned int len; /* Total length of queue + properties. */
-
- /* Obtain the port number from the message header. */
- if (oh->version == OFP10_VERSION) {
- const struct ofp10_queue_get_config_reply *oqgcr10 = msg->msg;
- queue->port = u16_to_ofp(ntohs(oqgcr10->port));
- } else {
- const struct ofp11_queue_get_config_reply *oqgcr11 = msg->msg;
- enum ofperr error = ofputil_port_from_ofp11(oqgcr11->port,
- &queue->port);
- if (error) {
- return error;
- }
- }
-
- /* Pull off the queue header and get the queue number and length. */
- if (oh->version < OFP12_VERSION) {
- const struct ofp10_packet_queue *opq10;
- opq10 = ofpbuf_try_pull(msg, sizeof *opq10);
- if (!opq10) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- queue->queue = ntohl(opq10->queue_id);
- len = ntohs(opq10->len);
- opq_len = sizeof *opq10;
- } else {
- const struct ofp12_packet_queue *opq12;
- opq12 = ofpbuf_try_pull(msg, sizeof *opq12);
- if (!opq12) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- queue->queue = ntohl(opq12->queue_id);
- len = ntohs(opq12->len);
- opq_len = sizeof *opq12;
- }
-
- /* Length check. */
- if (len < opq_len || len > msg->size + opq_len || len % 8) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- len -= opq_len;
-
- /* Pull properties. The format of these properties differs from used in
- * OF1.4+ so we can't use the common property functions. */
- while (len > 0) {
- const struct ofp10_queue_prop_header *hdr;
- unsigned int property;
- unsigned int prop_len;
- enum ofperr error = 0;
-
- hdr = ofpbuf_at_assert(msg, 0, sizeof *hdr);
- prop_len = ntohs(hdr->len);
- if (prop_len < sizeof *hdr || prop_len > msg->size || prop_len % 8) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- property = ntohs(hdr->property);
- switch (property) {
- case OFPQT10_MIN_RATE:
- error = parse_ofp10_queue_rate(hdr, &queue->min_rate);
- break;
-
- case OFPQT11_MAX_RATE:
- error = parse_ofp10_queue_rate(hdr, &queue->max_rate);
- break;
-
- default:
- VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
- break;
- }
- if (error) {
- return error;
- }
-
- ofpbuf_pull(msg, prop_len);
- len -= prop_len;
- }
- return 0;
-}
-
-static int
-ofputil_pull_queue_get_config_reply14(struct ofpbuf *msg,
- struct ofputil_queue_config *queue)
-{
- struct ofp14_queue_desc *oqd14 = ofpbuf_try_pull(msg, sizeof *oqd14);
- if (!oqd14) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- enum ofperr error = ofputil_port_from_ofp11(oqd14->port_no, &queue->port);
- if (error) {
- return error;
- }
- queue->queue = ntohl(oqd14->queue_id);
-
- /* Length check. */
- unsigned int len = ntohs(oqd14->len);
- if (len < sizeof *oqd14 || len > msg->size + sizeof *oqd14 || len % 8) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- len -= sizeof *oqd14;
-
- struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
- len);
- while (properties.size > 0) {
- struct ofpbuf payload;
- uint64_t type;
-
- error = ofpprop_pull(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPQDPT14_MIN_RATE:
- error = ofpprop_parse_u16(&payload, &queue->min_rate);
- break;
-
- case OFPQDPT14_MAX_RATE:
- error = ofpprop_parse_u16(&payload, &queue->max_rate);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(true, "queue desc", type);
- break;
- }
-
- if (error) {
- return error;
- }
- }
-
- return 0;
-}
-
-/* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
- * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
- * must already have pulled off the main header.
- *
- * This function returns EOF if the last queue has already been decoded, 0 if a
- * queue was successfully decoded into '*queue', or an ofperr if there was a
- * problem decoding 'reply'. */
-int
-ofputil_pull_queue_get_config_reply(struct ofpbuf *msg,
- struct ofputil_queue_config *queue)
-{
- enum ofpraw raw;
- if (!msg->header) {
- /* Pull OpenFlow header. */
- raw = ofpraw_pull_assert(msg);
-
- /* Pull protocol-specific ofp_queue_get_config_reply header (OF1.4
- * doesn't have one at all). */
- if (raw == OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY) {
- ofpbuf_pull(msg, sizeof(struct ofp10_queue_get_config_reply));
- } else if (raw == OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY) {
- ofpbuf_pull(msg, sizeof(struct ofp11_queue_get_config_reply));
- } else {
- ovs_assert(raw == OFPRAW_OFPST14_QUEUE_DESC_REPLY);
- }
- } else {
- raw = ofpraw_decode_assert(msg->header);
- }
-
- queue->min_rate = UINT16_MAX;
- queue->max_rate = UINT16_MAX;
-
- if (!msg->size) {
- return EOF;
- } else if (raw == OFPRAW_OFPST14_QUEUE_DESC_REPLY) {
- return ofputil_pull_queue_get_config_reply14(msg, queue);
- } else {
- return ofputil_pull_queue_get_config_reply10(msg, queue);
- }
-}
-
-/* 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. */
-enum ofperr
-ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
- const struct ofp_header *oh)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- switch ((int) raw) {
- case OFPRAW_OFPST10_FLOW_REQUEST:
- return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
-
- case OFPRAW_OFPST10_AGGREGATE_REQUEST:
- return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
-
- case OFPRAW_OFPST11_FLOW_REQUEST:
- return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
-
- case OFPRAW_OFPST11_AGGREGATE_REQUEST:
- return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
-
- case OFPRAW_NXST_FLOW_REQUEST:
- return ofputil_decode_nxst_flow_request(fsr, &b, false);
-
- case OFPRAW_NXST_AGGREGATE_REQUEST:
- return ofputil_decode_nxst_flow_request(fsr, &b, true);
-
- default:
- /* Hey, the caller lied. */
- OVS_NOT_REACHED();
- }
-}
-
-/* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
- * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
- * 'protocol', and returns the message. */
-struct ofpbuf *
-ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
- enum ofputil_protocol protocol)
-{
- struct ofpbuf *msg;
- enum ofpraw raw;
-
- switch (protocol) {
- case OFPUTIL_P_OF11_STD:
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM: {
- struct ofp11_flow_stats_request *ofsr;
-
- raw = (fsr->aggregate
- ? OFPRAW_OFPST11_AGGREGATE_REQUEST
- : OFPRAW_OFPST11_FLOW_REQUEST);
- msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
- ofputil_match_typical_len(protocol));
- ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
- ofsr->table_id = fsr->table_id;
- ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
- ofsr->out_group = htonl(fsr->out_group);
- ofsr->cookie = fsr->cookie;
- ofsr->cookie_mask = fsr->cookie_mask;
- ofputil_put_ofp11_match(msg, &fsr->match, protocol);
- break;
- }
-
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID: {
- struct ofp10_flow_stats_request *ofsr;
-
- raw = (fsr->aggregate
- ? OFPRAW_OFPST10_AGGREGATE_REQUEST
- : OFPRAW_OFPST10_FLOW_REQUEST);
- msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
- ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
- ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
- ofsr->table_id = fsr->table_id;
- ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
- break;
- }
-
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID: {
- struct nx_flow_stats_request *nfsr;
- int match_len;
-
- raw = (fsr->aggregate
- ? OFPRAW_NXST_AGGREGATE_REQUEST
- : OFPRAW_NXST_FLOW_REQUEST);
- msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
- ofpbuf_put_zeros(msg, sizeof *nfsr);
- match_len = nx_put_match(msg, &fsr->match,
- fsr->cookie, fsr->cookie_mask);
-
- nfsr = msg->msg;
- nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
- nfsr->match_len = htons(match_len);
- nfsr->table_id = fsr->table_id;
- break;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-
- return msg;
-}
-
-/* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
- * ofputil_flow_stats in 'fs'.
- *
- * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
- * OpenFlow message. Calling this function multiple times for a single 'msg'
- * iterates through the replies. The caller must initially leave 'msg''s layer
- * pointers null and not modify them between calls.
- *
- * Most switches don't send the values needed to populate fs->idle_age and
- * fs->hard_age, so those members will usually be set to 0. If the switch from
- * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
- * 'flow_age_extension' as true so that the contents of 'msg' determine the
- * 'idle_age' and 'hard_age' members in 'fs'.
- *
- * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
- * reply's actions. The caller must initialize 'ofpacts' and retains ownership
- * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
- struct ofpbuf *msg,
- bool flow_age_extension,
- struct ofpbuf *ofpacts)
-{
- const struct ofp_header *oh;
- size_t instructions_len;
- enum ofperr error;
- enum ofpraw raw;
-
- error = (msg->header ? ofpraw_decode(&raw, msg->header)
- : ofpraw_pull(&raw, msg));
- if (error) {
- return error;
- }
- oh = msg->header;
-
- if (!msg->size) {
- return EOF;
- } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
- || raw == OFPRAW_OFPST13_FLOW_REPLY) {
- const struct ofp11_flow_stats *ofs;
- size_t length;
- uint16_t padded_match_len;
-
- ofs = ofpbuf_try_pull(msg, sizeof *ofs);
- if (!ofs) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
- "bytes at end", msg->size);
- return EINVAL;
- }
-
- length = ntohs(ofs->length);
- if (length < sizeof *ofs) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
- "length %"PRIuSIZE, length);
- return EINVAL;
- }
-
- if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
- return EINVAL;
- }
- instructions_len = length - sizeof *ofs - padded_match_len;
-
- fs->priority = ntohs(ofs->priority);
- fs->table_id = ofs->table_id;
- fs->duration_sec = ntohl(ofs->duration_sec);
- fs->duration_nsec = ntohl(ofs->duration_nsec);
- fs->idle_timeout = ntohs(ofs->idle_timeout);
- fs->hard_timeout = ntohs(ofs->hard_timeout);
- if (oh->version >= OFP14_VERSION) {
- fs->importance = ntohs(ofs->importance);
- } else {
- fs->importance = 0;
- }
- if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
- error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
- &fs->flags);
- if (error) {
- return error;
- }
- } else {
- fs->flags = 0;
- }
- fs->idle_age = -1;
- fs->hard_age = -1;
- fs->cookie = ofs->cookie;
- fs->packet_count = ntohll(ofs->packet_count);
- fs->byte_count = ntohll(ofs->byte_count);
- } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
- const struct ofp10_flow_stats *ofs;
- size_t length;
-
- ofs = ofpbuf_try_pull(msg, sizeof *ofs);
- if (!ofs) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
- "bytes at end", msg->size);
- return EINVAL;
- }
-
- length = ntohs(ofs->length);
- if (length < sizeof *ofs) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
- "length %"PRIuSIZE, length);
- return EINVAL;
- }
- instructions_len = length - sizeof *ofs;
-
- fs->cookie = get_32aligned_be64(&ofs->cookie);
- ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
- fs->priority = ntohs(ofs->priority);
- fs->table_id = ofs->table_id;
- fs->duration_sec = ntohl(ofs->duration_sec);
- fs->duration_nsec = ntohl(ofs->duration_nsec);
- fs->idle_timeout = ntohs(ofs->idle_timeout);
- fs->hard_timeout = ntohs(ofs->hard_timeout);
- fs->importance = 0;
- fs->idle_age = -1;
- fs->hard_age = -1;
- fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
- fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
- fs->flags = 0;
- } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
- const struct nx_flow_stats *nfs;
- size_t match_len, length;
-
- nfs = ofpbuf_try_pull(msg, sizeof *nfs);
- if (!nfs) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
- "bytes at end", msg->size);
- return EINVAL;
- }
-
- length = ntohs(nfs->length);
- match_len = ntohs(nfs->match_len);
- if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
- "claims invalid length %"PRIuSIZE, match_len, length);
- return EINVAL;
- }
- if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
- return EINVAL;
- }
- instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
-
- fs->cookie = nfs->cookie;
- fs->table_id = nfs->table_id;
- fs->duration_sec = ntohl(nfs->duration_sec);
- fs->duration_nsec = ntohl(nfs->duration_nsec);
- fs->priority = ntohs(nfs->priority);
- fs->idle_timeout = ntohs(nfs->idle_timeout);
- fs->hard_timeout = ntohs(nfs->hard_timeout);
- fs->importance = 0;
- fs->idle_age = -1;
- fs->hard_age = -1;
- if (flow_age_extension) {
- if (nfs->idle_age) {
- fs->idle_age = ntohs(nfs->idle_age) - 1;
- }
- if (nfs->hard_age) {
- fs->hard_age = ntohs(nfs->hard_age) - 1;
- }
- }
- fs->packet_count = ntohll(nfs->packet_count);
- fs->byte_count = ntohll(nfs->byte_count);
- fs->flags = 0;
- } else {
- OVS_NOT_REACHED();
- }
-
- if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
- ofpacts)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
- return EINVAL;
- }
- fs->ofpacts = ofpacts->data;
- fs->ofpacts_len = ofpacts->size;
-
- return 0;
-}
-
-/* Returns 'count' unchanged except that UINT64_MAX becomes 0.
- *
- * We use this in situations where OVS internally uses UINT64_MAX to mean
- * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
-static uint64_t
-unknown_to_zero(uint64_t count)
-{
- return count != UINT64_MAX ? count : 0;
-}
-
-/* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
- * those already present in the list of ofpbufs in 'replies'. 'replies' should
- * have been initialized with ofpmp_init(). */
-void
-ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
- struct ovs_list *replies)
-{
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- size_t start_ofs = reply->size;
- enum ofp_version version = ofpmp_version(replies);
- enum ofpraw raw = ofpmp_decode_raw(replies);
-
- if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
- struct ofp11_flow_stats *ofs;
-
- ofpbuf_put_uninit(reply, sizeof *ofs);
- oxm_put_match(reply, &fs->match, version);
- ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
- version);
-
- ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
- ofs->length = htons(reply->size - start_ofs);
- ofs->table_id = fs->table_id;
- ofs->pad = 0;
- ofs->duration_sec = htonl(fs->duration_sec);
- ofs->duration_nsec = htonl(fs->duration_nsec);
- ofs->priority = htons(fs->priority);
- ofs->idle_timeout = htons(fs->idle_timeout);
- ofs->hard_timeout = htons(fs->hard_timeout);
- if (version >= OFP14_VERSION) {
- ofs->importance = htons(fs->importance);
- } else {
- ofs->importance = 0;
- }
- if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
- ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
- } else {
- ofs->flags = 0;
- }
- memset(ofs->pad2, 0, sizeof ofs->pad2);
- ofs->cookie = fs->cookie;
- ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
- ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
- } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
- struct ofp10_flow_stats *ofs;
-
- ofpbuf_put_uninit(reply, sizeof *ofs);
- ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
- version);
- ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
- ofs->length = htons(reply->size - start_ofs);
- ofs->table_id = fs->table_id;
- ofs->pad = 0;
- ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
- ofs->duration_sec = htonl(fs->duration_sec);
- ofs->duration_nsec = htonl(fs->duration_nsec);
- ofs->priority = htons(fs->priority);
- ofs->idle_timeout = htons(fs->idle_timeout);
- ofs->hard_timeout = htons(fs->hard_timeout);
- memset(ofs->pad2, 0, sizeof ofs->pad2);
- put_32aligned_be64(&ofs->cookie, fs->cookie);
- put_32aligned_be64(&ofs->packet_count,
- htonll(unknown_to_zero(fs->packet_count)));
- put_32aligned_be64(&ofs->byte_count,
- htonll(unknown_to_zero(fs->byte_count)));
- } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
- struct nx_flow_stats *nfs;
- int match_len;
-
- ofpbuf_put_uninit(reply, sizeof *nfs);
- match_len = nx_put_match(reply, &fs->match, 0, 0);
- ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
- version);
- nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
- nfs->length = htons(reply->size - start_ofs);
- nfs->table_id = fs->table_id;
- nfs->pad = 0;
- nfs->duration_sec = htonl(fs->duration_sec);
- nfs->duration_nsec = htonl(fs->duration_nsec);
- nfs->priority = htons(fs->priority);
- nfs->idle_timeout = htons(fs->idle_timeout);
- nfs->hard_timeout = htons(fs->hard_timeout);
- nfs->idle_age = htons(fs->idle_age < 0 ? 0
- : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
- : UINT16_MAX);
- nfs->hard_age = htons(fs->hard_age < 0 ? 0
- : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
- : UINT16_MAX);
- nfs->match_len = htons(match_len);
- nfs->cookie = fs->cookie;
- nfs->packet_count = htonll(fs->packet_count);
- nfs->byte_count = htonll(fs->byte_count);
- } else {
- OVS_NOT_REACHED();
- }
-
- ofpmp_postappend(replies, start_ofs);
-}
-
-/* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
- * NXST_AGGREGATE reply matching 'request', and returns the message. */
-struct ofpbuf *
-ofputil_encode_aggregate_stats_reply(
- const struct ofputil_aggregate_stats *stats,
- const struct ofp_header *request)
-{
- struct ofp_aggregate_stats_reply *asr;
- uint64_t packet_count;
- uint64_t byte_count;
- struct ofpbuf *msg;
- enum ofpraw raw;
-
- ofpraw_decode(&raw, request);
- if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
- packet_count = unknown_to_zero(stats->packet_count);
- byte_count = unknown_to_zero(stats->byte_count);
- } else {
- packet_count = stats->packet_count;
- byte_count = stats->byte_count;
- }
-
- msg = ofpraw_alloc_stats_reply(request, 0);
- asr = ofpbuf_put_zeros(msg, sizeof *asr);
- put_32aligned_be64(&asr->packet_count, htonll(packet_count));
- put_32aligned_be64(&asr->byte_count, htonll(byte_count));
- asr->flow_count = htonl(stats->flow_count);
-
- return msg;
-}
-
-enum ofperr
-ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
- const struct ofp_header *reply)
-{
- struct ofpbuf msg = ofpbuf_const_initializer(reply, ntohs(reply->length));
- ofpraw_pull_assert(&msg);
-
- struct ofp_aggregate_stats_reply *asr = msg.msg;
- stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
- stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
- stats->flow_count = ntohl(asr->flow_count);
-
- return 0;
-}
-
-/* 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. */
-enum ofperr
-ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
- const struct ofp_header *oh)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
- const struct ofp12_flow_removed *ofr;
- enum ofperr error;
-
- ofr = ofpbuf_pull(&b, sizeof *ofr);
-
- error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
- if (error) {
- return error;
- }
-
- fr->priority = ntohs(ofr->priority);
- fr->cookie = ofr->cookie;
- fr->reason = ofr->reason;
- fr->table_id = ofr->table_id;
- fr->duration_sec = ntohl(ofr->duration_sec);
- fr->duration_nsec = ntohl(ofr->duration_nsec);
- fr->idle_timeout = ntohs(ofr->idle_timeout);
- fr->hard_timeout = ntohs(ofr->hard_timeout);
- fr->packet_count = ntohll(ofr->packet_count);
- fr->byte_count = ntohll(ofr->byte_count);
- } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
- const struct ofp10_flow_removed *ofr;
-
- ofr = ofpbuf_pull(&b, sizeof *ofr);
-
- ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
- fr->priority = ntohs(ofr->priority);
- fr->cookie = ofr->cookie;
- fr->reason = ofr->reason;
- fr->table_id = 255;
- fr->duration_sec = ntohl(ofr->duration_sec);
- fr->duration_nsec = ntohl(ofr->duration_nsec);
- fr->idle_timeout = ntohs(ofr->idle_timeout);
- fr->hard_timeout = 0;
- fr->packet_count = ntohll(ofr->packet_count);
- fr->byte_count = ntohll(ofr->byte_count);
- } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
- struct nx_flow_removed *nfr;
- enum ofperr error;
-
- nfr = ofpbuf_pull(&b, sizeof *nfr);
- error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
- NULL, NULL);
- if (error) {
- return error;
- }
- if (b.size) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- fr->priority = ntohs(nfr->priority);
- fr->cookie = nfr->cookie;
- fr->reason = nfr->reason;
- fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
- fr->duration_sec = ntohl(nfr->duration_sec);
- fr->duration_nsec = ntohl(nfr->duration_nsec);
- fr->idle_timeout = ntohs(nfr->idle_timeout);
- fr->hard_timeout = 0;
- fr->packet_count = ntohll(nfr->packet_count);
- fr->byte_count = ntohll(nfr->byte_count);
- } else {
- OVS_NOT_REACHED();
- }
-
- return 0;
-}
-
-/* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
- * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
- * message. */
-struct ofpbuf *
-ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
- enum ofputil_protocol protocol)
-{
- struct ofpbuf *msg;
- enum ofp_flow_removed_reason reason = fr->reason;
-
- if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
- reason = OFPRR_DELETE;
- }
-
- switch (protocol) {
- case OFPUTIL_P_OF11_STD:
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM: {
- struct ofp12_flow_removed *ofr;
-
- msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
- ofputil_protocol_to_ofp_version(protocol),
- htonl(0),
- ofputil_match_typical_len(protocol));
- ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
- ofr->cookie = fr->cookie;
- ofr->priority = htons(fr->priority);
- ofr->reason = reason;
- ofr->table_id = fr->table_id;
- ofr->duration_sec = htonl(fr->duration_sec);
- ofr->duration_nsec = htonl(fr->duration_nsec);
- ofr->idle_timeout = htons(fr->idle_timeout);
- ofr->hard_timeout = htons(fr->hard_timeout);
- ofr->packet_count = htonll(fr->packet_count);
- ofr->byte_count = htonll(fr->byte_count);
- ofputil_put_ofp11_match(msg, &fr->match, protocol);
- break;
- }
-
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID: {
- struct ofp10_flow_removed *ofr;
-
- msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
- htonl(0), 0);
- ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
- ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
- ofr->cookie = fr->cookie;
- ofr->priority = htons(fr->priority);
- ofr->reason = reason;
- ofr->duration_sec = htonl(fr->duration_sec);
- ofr->duration_nsec = htonl(fr->duration_nsec);
- ofr->idle_timeout = htons(fr->idle_timeout);
- ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
- ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
- break;
- }
-
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID: {
- struct nx_flow_removed *nfr;
- int match_len;
-
- msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
- htonl(0), NXM_TYPICAL_LEN);
- ofpbuf_put_zeros(msg, sizeof *nfr);
- match_len = nx_put_match(msg, &fr->match, 0, 0);
-
- nfr = msg->msg;
- nfr->cookie = fr->cookie;
- nfr->priority = htons(fr->priority);
- nfr->reason = reason;
- nfr->table_id = fr->table_id + 1;
- nfr->duration_sec = htonl(fr->duration_sec);
- nfr->duration_nsec = htonl(fr->duration_nsec);
- nfr->idle_timeout = htons(fr->idle_timeout);
- nfr->match_len = htons(match_len);
- nfr->packet_count = htonll(fr->packet_count);
- nfr->byte_count = htonll(fr->byte_count);
- break;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-
- return msg;
-}
-
-/* The caller has done basic initialization of '*pin'; the other output
- * arguments needs to be initialized. */
-static enum ofperr
-decode_nx_packet_in2(const struct ofp_header *oh, bool loose,
- struct ofputil_packet_in *pin,
- size_t *total_len, uint32_t *buffer_id,
- struct ofpbuf *continuation)
-{
- *total_len = 0;
- *buffer_id = UINT32_MAX;
-
- struct ofpbuf properties;
- ofpbuf_use_const(&properties, oh, ntohs(oh->length));
- ofpraw_pull_assert(&properties);
-
- while (properties.size > 0) {
- struct ofpbuf payload;
- uint64_t type;
-
- enum ofperr error = ofpprop_pull(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case NXPINT_PACKET:
- pin->packet = payload.msg;
- pin->packet_len = ofpbuf_msgsize(&payload);
- break;
-
- case NXPINT_FULL_LEN: {
- uint32_t u32;
- error = ofpprop_parse_u32(&payload, &u32);
- *total_len = u32;
- break;
- }
-
- case NXPINT_BUFFER_ID:
- error = ofpprop_parse_u32(&payload, buffer_id);
- break;
-
- case NXPINT_TABLE_ID:
- error = ofpprop_parse_u8(&payload, &pin->table_id);
- break;
-
- case NXPINT_COOKIE:
- error = ofpprop_parse_be64(&payload, &pin->cookie);
- break;
-
- case NXPINT_REASON: {
- uint8_t reason;
- error = ofpprop_parse_u8(&payload, &reason);
- pin->reason = reason;
- break;
- }
-
- case NXPINT_METADATA:
- error = oxm_decode_match(payload.msg, ofpbuf_msgsize(&payload),
- &pin->flow_metadata);
- break;
-
- case NXPINT_USERDATA:
- pin->userdata = payload.msg;
- pin->userdata_len = ofpbuf_msgsize(&payload);
- break;
-
- case NXPINT_CONTINUATION:
- if (continuation) {
- error = ofpprop_parse_nested(&payload, continuation);
- }
- break;
-
- default:
- error = OFPPROP_UNKNOWN(loose, "NX_PACKET_IN2", type);
- break;
- }
- if (error) {
- return error;
- }
- }
-
- if (!pin->packet_len) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXT_PACKET_IN2 lacks packet");
- return OFPERR_OFPBRC_BAD_LEN;
- } else if (!*total_len) {
- *total_len = pin->packet_len;
- } else if (*total_len < pin->packet_len) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXT_PACKET_IN2 claimed full_len < len");
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- return 0;
-}
-
-/* Decodes the packet-in message starting at 'oh' into '*pin'. Populates
- * 'pin->packet' and 'pin->packet_len' with the part of the packet actually
- * included in the message. If 'total_lenp' is nonnull, populates
- * '*total_lenp' with the original length of the packet (which is larger than
- * 'packet->len' if only part of the packet was included). If 'buffer_idp' is
- * nonnull, stores the packet's buffer ID in '*buffer_idp' (UINT32_MAX if it
- * was not buffered).
- *
- * Populates 'continuation', if nonnull, with the continuation data from the
- * packet-in (an empty buffer, if 'oh' did not contain continuation data). The
- * format of this data is supposed to be opaque to anything other than
- * ovs-vswitchd, so that in any other process the only reasonable use of this
- * data is to be copied into an NXT_RESUME message via ofputil_encode_resume().
- *
- * This function points 'pin->packet' into 'oh', so the caller should not free
- * it separately from the original OpenFlow message. This is also true for
- * 'pin->userdata' (which could also end up NULL if there is no userdata).
- *
- * Returns 0 if successful, otherwise an OpenFlow error code. */
-enum ofperr
-ofputil_decode_packet_in(const struct ofp_header *oh, bool loose,
- struct ofputil_packet_in *pin,
- size_t *total_lenp, uint32_t *buffer_idp,
- struct ofpbuf *continuation)
-{
- uint32_t buffer_id;
- size_t total_len;
-
- memset(pin, 0, sizeof *pin);
- pin->cookie = OVS_BE64_MAX;
- if (continuation) {
- ofpbuf_use_const(continuation, NULL, 0);
- }
-
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
- const struct ofp12_packet_in *opi = ofpbuf_pull(&b, sizeof *opi);
- const ovs_be64 *cookie = (raw == OFPRAW_OFPT13_PACKET_IN
- ? ofpbuf_pull(&b, sizeof *cookie)
- : NULL);
- enum ofperr error = oxm_pull_match_loose(&b, &pin->flow_metadata);
- 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;
- buffer_id = ntohl(opi->buffer_id);
- total_len = ntohs(opi->total_len);
- if (cookie) {
- pin->cookie = *cookie;
- }
-
- pin->packet = b.data;
- pin->packet_len = b.size;
- } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
- const struct ofp10_packet_in *opi;
-
- opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
-
- pin->packet = CONST_CAST(uint8_t *, opi->data);
- pin->packet_len = b.size;
-
- match_init_catchall(&pin->flow_metadata);
- match_set_in_port(&pin->flow_metadata,
- u16_to_ofp(ntohs(opi->in_port)));
- pin->reason = opi->reason;
- buffer_id = ntohl(opi->buffer_id);
- total_len = ntohs(opi->total_len);
- } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
- const struct ofp11_packet_in *opi;
- ofp_port_t in_port;
- enum ofperr error;
-
- opi = ofpbuf_pull(&b, sizeof *opi);
-
- pin->packet = b.data;
- pin->packet_len = b.size;
-
- buffer_id = ntohl(opi->buffer_id);
- error = ofputil_port_from_ofp11(opi->in_port, &in_port);
- if (error) {
- return error;
- }
- match_init_catchall(&pin->flow_metadata);
- match_set_in_port(&pin->flow_metadata, in_port);
- total_len = ntohs(opi->total_len);
- pin->reason = opi->reason;
- pin->table_id = opi->table_id;
- } else if (raw == OFPRAW_NXT_PACKET_IN) {
- const struct nx_packet_in *npi;
- int error;
-
- npi = ofpbuf_pull(&b, sizeof *npi);
- error = nx_pull_match_loose(&b, ntohs(npi->match_len),
- &pin->flow_metadata, NULL, NULL);
- if (error) {
- return error;
- }
-
- if (!ofpbuf_try_pull(&b, 2)) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- pin->reason = npi->reason;
- pin->table_id = npi->table_id;
- pin->cookie = npi->cookie;
-
- buffer_id = ntohl(npi->buffer_id);
- total_len = ntohs(npi->total_len);
-
- pin->packet = b.data;
- pin->packet_len = b.size;
- } else if (raw == OFPRAW_NXT_PACKET_IN2 || raw == OFPRAW_NXT_RESUME) {
- enum ofperr error = decode_nx_packet_in2(oh, loose, pin, &total_len,
- &buffer_id, continuation);
- if (error) {
- return error;
- }
- } else {
- OVS_NOT_REACHED();
- }
-
- if (total_lenp) {
- *total_lenp = total_len;
- }
- if (buffer_idp) {
- *buffer_idp = buffer_id;
- }
-
- return 0;
-}
-
-static int
-encode_packet_in_reason(enum ofp_packet_in_reason reason,
- enum ofp_version version)
-{
- switch (reason) {
- case OFPR_NO_MATCH:
- case OFPR_ACTION:
- case OFPR_INVALID_TTL:
- return reason;
-
- case OFPR_ACTION_SET:
- case OFPR_GROUP:
- case OFPR_PACKET_OUT:
- return version < OFP14_VERSION ? OFPR_ACTION : reason;
-
- case OFPR_EXPLICIT_MISS:
- return version < OFP13_VERSION ? OFPR_ACTION : OFPR_NO_MATCH;
-
- case OFPR_IMPLICIT_MISS:
- return OFPR_NO_MATCH;
-
- case OFPR_N_REASONS:
- default:
- OVS_NOT_REACHED();
- }
-}
-
-/* Only NXT_PACKET_IN2 (not NXT_RESUME) should include NXCPT_USERDATA, so this
- * function omits it. The caller can add it itself if desired. */
-static void
-ofputil_put_packet_in(const struct ofputil_packet_in *pin,
- enum ofp_version version, uint32_t buffer_id,
- size_t include_bytes, struct ofpbuf *msg)
-{
- /* Add packet properties. */
- ofpprop_put(msg, NXPINT_PACKET, pin->packet, include_bytes);
- if (include_bytes != pin->packet_len) {
- ofpprop_put_u32(msg, NXPINT_FULL_LEN, pin->packet_len);
- }
- if (buffer_id != UINT32_MAX) {
- ofpprop_put_u32(msg, NXPINT_BUFFER_ID, buffer_id);
- }
-
- /* Add flow properties. */
- ofpprop_put_u8(msg, NXPINT_TABLE_ID, pin->table_id);
- if (pin->cookie != OVS_BE64_MAX) {
- ofpprop_put_be64(msg, NXPINT_COOKIE, pin->cookie);
- }
-
- /* Add other properties. */
- ofpprop_put_u8(msg, NXPINT_REASON,
- encode_packet_in_reason(pin->reason, version));
-
- size_t start = ofpprop_start(msg, NXPINT_METADATA);
- oxm_put_raw(msg, &pin->flow_metadata, version);
- ofpprop_end(msg, start);
-}
-
-static void
-put_actions_property(struct ofpbuf *msg, uint64_t prop_type,
- enum ofp_version version,
- const struct ofpact *actions, size_t actions_len)
-{
- if (actions_len) {
- size_t start = ofpprop_start_nested(msg, prop_type);
- ofpacts_put_openflow_actions(actions, actions_len, msg, version);
- ofpprop_end(msg, start);
- }
-}
-
-enum nx_continuation_prop_type {
- NXCPT_BRIDGE = 0x8000,
- NXCPT_STACK,
- NXCPT_MIRRORS,
- NXCPT_CONNTRACKED,
- NXCPT_TABLE_ID,
- NXCPT_COOKIE,
- NXCPT_ACTIONS,
- NXCPT_ACTION_SET,
-};
-
-/* Only NXT_PACKET_IN2 (not NXT_RESUME) should include NXCPT_USERDATA, so this
- * function omits it. The caller can add it itself if desired. */
-static void
-ofputil_put_packet_in_private(const struct ofputil_packet_in_private *pin,
- enum ofp_version version, uint32_t buffer_id,
- size_t include_bytes, struct ofpbuf *msg)
-{
- ofputil_put_packet_in(&pin->public, version, buffer_id,
- include_bytes, msg);
-
- size_t continuation_ofs = ofpprop_start_nested(msg, NXPINT_CONTINUATION);
- size_t inner_ofs = msg->size;
-
- if (!uuid_is_zero(&pin->bridge)) {
- ofpprop_put_uuid(msg, NXCPT_BRIDGE, &pin->bridge);
- }
-
- for (size_t i = 0; i < pin->n_stack; i++) {
- const union mf_subvalue *s = &pin->stack[i];
- size_t ofs;
- for (ofs = 0; ofs < sizeof *s; ofs++) {
- if (s->u8[ofs]) {
- break;
- }
- }
-
- ofpprop_put(msg, NXCPT_STACK, &s->u8[ofs], sizeof *s - ofs);
- }
-
- if (pin->mirrors) {
- ofpprop_put_u32(msg, NXCPT_MIRRORS, pin->mirrors);
- }
-
- if (pin->conntracked) {
- ofpprop_put_flag(msg, NXCPT_CONNTRACKED);
- }
-
- if (pin->actions_len) {
- /* Divide 'pin->actions' into groups that begins with an
- * unroll_xlate action. For each group, emit a NXCPT_TABLE_ID and
- * NXCPT_COOKIE property (if either has changed; each is initially
- * assumed 0), then a NXCPT_ACTIONS property with the grouped
- * actions.
- *
- * The alternative is to make OFPACT_UNROLL_XLATE public. We can
- * always do that later, since this is a private property. */
- const struct ofpact *const end = ofpact_end(pin->actions,
- pin->actions_len);
- const struct ofpact_unroll_xlate *unroll = NULL;
- uint8_t table_id = 0;
- ovs_be64 cookie = 0;
-
- const struct ofpact *a;
- for (a = pin->actions; ; a = ofpact_next(a)) {
- if (a == end || a->type == OFPACT_UNROLL_XLATE) {
- if (unroll) {
- if (table_id != unroll->rule_table_id) {
- ofpprop_put_u8(msg, NXCPT_TABLE_ID,
- unroll->rule_table_id);
- table_id = unroll->rule_table_id;
- }
- if (cookie != unroll->rule_cookie) {
- ofpprop_put_be64(msg, NXCPT_COOKIE,
- unroll->rule_cookie);
- cookie = unroll->rule_cookie;
- }
- }
-
- const struct ofpact *start
- = unroll ? ofpact_next(&unroll->ofpact) : pin->actions;
- put_actions_property(msg, NXCPT_ACTIONS, version,
- start, (a - start) * sizeof *a);
-
- if (a == end) {
- break;
- }
- unroll = ofpact_get_UNROLL_XLATE(a);
- }
- }
- }
-
- if (pin->action_set_len) {
- size_t start = ofpprop_start_nested(msg, NXCPT_ACTION_SET);
- ofpacts_put_openflow_actions(pin->action_set,
- pin->action_set_len, msg, version);
- ofpprop_end(msg, start);
- }
-
- if (msg->size > inner_ofs) {
- ofpprop_end(msg, continuation_ofs);
- } else {
- msg->size = continuation_ofs;
- }
-}
-
-static struct ofpbuf *
-ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin,
- uint32_t buffer_id)
-{
- struct ofp10_packet_in *opi;
- struct ofpbuf *msg;
-
- msg = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
- htonl(0), pin->packet_len);
- opi = ofpbuf_put_zeros(msg, offsetof(struct ofp10_packet_in, data));
- opi->total_len = htons(pin->packet_len);
- opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
- opi->reason = encode_packet_in_reason(pin->reason, OFP10_VERSION);
- opi->buffer_id = htonl(buffer_id);
-
- return msg;
-}
-
-static struct ofpbuf *
-ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin,
- enum ofp_version version, uint32_t buffer_id)
-{
- struct nx_packet_in *npi;
- struct ofpbuf *msg;
- size_t match_len;
-
- /* The final argument is just an estimate of the space required. */
- msg = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, version,
- htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
- ofpbuf_put_zeros(msg, sizeof *npi);
- match_len = nx_put_match(msg, &pin->flow_metadata, 0, 0);
- ofpbuf_put_zeros(msg, 2);
-
- npi = msg->msg;
- npi->buffer_id = htonl(buffer_id);
- npi->total_len = htons(pin->packet_len);
- npi->reason = encode_packet_in_reason(pin->reason, version);
- npi->table_id = pin->table_id;
- npi->cookie = pin->cookie;
- npi->match_len = htons(match_len);
-
- return msg;
-}
-
-static struct ofpbuf *
-ofputil_encode_nx_packet_in2(const struct ofputil_packet_in_private *pin,
- enum ofp_version version, uint32_t buffer_id,
- size_t include_bytes)
-{
- /* 'extra' is just an estimate of the space required. */
- size_t extra = (pin->public.packet_len
- + NXM_TYPICAL_LEN /* flow_metadata */
- + pin->n_stack * 16
- + pin->actions_len
- + pin->action_set_len
- + 256); /* fudge factor */
- struct ofpbuf *msg = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN2, version,
- htonl(0), extra);
-
- ofputil_put_packet_in_private(pin, version, buffer_id, include_bytes, msg);
- if (pin->public.userdata_len) {
- ofpprop_put(msg, NXPINT_USERDATA, pin->public.userdata,
- pin->public.userdata_len);
- }
-
- ofpmsg_update_length(msg);
- return msg;
-}
-
-static struct ofpbuf *
-ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin,
- uint32_t buffer_id)
-{
- struct ofp11_packet_in *opi;
- struct ofpbuf *msg;
-
- msg = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
- htonl(0), pin->packet_len);
- opi = ofpbuf_put_zeros(msg, sizeof *opi);
- opi->buffer_id = htonl(buffer_id);
- opi->in_port = ofputil_port_to_ofp11(
- pin->flow_metadata.flow.in_port.ofp_port);
- opi->in_phy_port = opi->in_port;
- opi->total_len = htons(pin->packet_len);
- opi->reason = encode_packet_in_reason(pin->reason, OFP11_VERSION);
- opi->table_id = pin->table_id;
-
- return msg;
-}
-
-static struct ofpbuf *
-ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
- enum ofp_version version,
- uint32_t buffer_id)
-{
- enum ofpraw raw = (version >= OFP13_VERSION
- ? OFPRAW_OFPT13_PACKET_IN
- : OFPRAW_OFPT12_PACKET_IN);
- struct ofpbuf *msg;
-
- /* The final argument is just an estimate of the space required. */
- msg = ofpraw_alloc_xid(raw, version,
- htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
-
- struct ofp12_packet_in *opi = ofpbuf_put_zeros(msg, sizeof *opi);
- opi->buffer_id = htonl(buffer_id);
- opi->total_len = htons(pin->packet_len);
- opi->reason = encode_packet_in_reason(pin->reason, version);
- opi->table_id = pin->table_id;
-
- if (version >= OFP13_VERSION) {
- ovs_be64 cookie = pin->cookie;
- ofpbuf_put(msg, &cookie, sizeof cookie);
- }
-
- oxm_put_match(msg, &pin->flow_metadata, version);
- ofpbuf_put_zeros(msg, 2);
-
- return msg;
-}
-
-/* Converts abstract ofputil_packet_in_private 'pin' into a PACKET_IN message
- * for 'protocol', using the packet-in format specified by 'packet_in_format'.
- *
- * If 'pkt_buf' is nonnull and 'max_len' allows the packet to be buffered, this
- * function will attempt to obtain a buffer ID from 'pktbuf' and truncate the
- * packet to 'max_len' bytes. Otherwise, or if 'pktbuf' doesn't have a free
- * buffer, it will send the whole packet without buffering.
- *
- * This function is really meant only for use by ovs-vswitchd. To any other
- * code, the "continuation" data, i.e. the data that is in struct
- * ofputil_packet_in_private but not in struct ofputil_packet_in, is supposed
- * to be opaque (and it might change from one OVS version to another). Thus,
- * if any other code wants to encode a packet-in, it should use a non-"private"
- * version of this function. (Such a version doesn't currently exist because
- * only ovs-vswitchd currently wants to encode packet-ins. If you need one,
- * write it...) */
-struct ofpbuf *
-ofputil_encode_packet_in_private(const struct ofputil_packet_in_private *pin,
- enum ofputil_protocol protocol,
- enum nx_packet_in_format packet_in_format,
- uint16_t max_len, struct pktbuf *pktbuf)
-{
- enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
-
- /* Get buffer ID. */
- ofp_port_t in_port = pin->public.flow_metadata.flow.in_port.ofp_port;
- uint32_t buffer_id = (max_len != OFPCML12_NO_BUFFER && pktbuf
- ? pktbuf_save(pktbuf, pin->public.packet,
- pin->public.packet_len, in_port)
- : UINT32_MAX);
-
- /* Calculate the number of bytes of the packet to include in the
- * packet-in:
- *
- * - If not buffered, the whole thing.
- *
- * - Otherwise, no more than 'max_len' bytes. */
- size_t include_bytes = (buffer_id == UINT32_MAX
- ? pin->public.packet_len
- : MIN(max_len, pin->public.packet_len));
-
- struct ofpbuf *msg;
- switch (packet_in_format) {
- case NXPIF_STANDARD:
- switch (protocol) {
- case OFPUTIL_P_OF10_STD:
- case OFPUTIL_P_OF10_STD_TID:
- case OFPUTIL_P_OF10_NXM:
- case OFPUTIL_P_OF10_NXM_TID:
- msg = ofputil_encode_ofp10_packet_in(&pin->public, buffer_id);
- break;
-
- case OFPUTIL_P_OF11_STD:
- msg = ofputil_encode_ofp11_packet_in(&pin->public, buffer_id);
- break;
-
- case OFPUTIL_P_OF12_OXM:
- case OFPUTIL_P_OF13_OXM:
- case OFPUTIL_P_OF14_OXM:
- case OFPUTIL_P_OF15_OXM:
- msg = ofputil_encode_ofp12_packet_in(&pin->public, version, buffer_id);
- break;
-
- default:
- OVS_NOT_REACHED();
- }
- break;
-
- case NXPIF_NXT_PACKET_IN:
- msg = ofputil_encode_nx_packet_in(&pin->public, version, buffer_id);
- break;
-
- case NXPIF_NXT_PACKET_IN2:
- return ofputil_encode_nx_packet_in2(pin, version, buffer_id,
- include_bytes);
-
- default:
- OVS_NOT_REACHED();
- }
-
- ofpbuf_put(msg, pin->public.packet, include_bytes);
- ofpmsg_update_length(msg);
- return msg;
-}
-
-/* Returns a string form of 'reason'. The return value is either a statically
- * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
- * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
-const char *
-ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
- char *reasonbuf, size_t bufsize)
-{
- switch (reason) {
- case OFPR_NO_MATCH:
- return "no_match";
- case OFPR_ACTION:
- return "action";
- case OFPR_INVALID_TTL:
- return "invalid_ttl";
- case OFPR_ACTION_SET:
- return "action_set";
- case OFPR_GROUP:
- return "group";
- case OFPR_PACKET_OUT:
- return "packet_out";
- case OFPR_EXPLICIT_MISS:
- case OFPR_IMPLICIT_MISS:
- return "";
-
- case OFPR_N_REASONS:
- default:
- snprintf(reasonbuf, bufsize, "%d", (int) reason);
- return reasonbuf;
- }
-}
-
-bool
-ofputil_packet_in_reason_from_string(const char *s,
- enum ofp_packet_in_reason *reason)
-{
- int i;
-
- for (i = 0; i < OFPR_N_REASONS; i++) {
- char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
- const char *reason_s;
-
- reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
- sizeof reasonbuf);
- if (!strcasecmp(s, reason_s)) {
- *reason = i;
- return true;
- }
- }
- return false;
-}
-
-/* Returns a newly allocated NXT_RESUME message for 'pin', with the given
- * 'continuation', for 'protocol'. This message is suitable for resuming the
- * pipeline traveral of the packet represented by 'pin', if sent to the switch
- * from which 'pin' was received. */
-struct ofpbuf *
-ofputil_encode_resume(const struct ofputil_packet_in *pin,
- const struct ofpbuf *continuation,
- enum ofputil_protocol protocol)
-{
- enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
- size_t extra = pin->packet_len + NXM_TYPICAL_LEN + continuation->size;
- struct ofpbuf *msg = ofpraw_alloc_xid(OFPRAW_NXT_RESUME, version,
- 0, extra);
- ofputil_put_packet_in(pin, version, UINT32_MAX, pin->packet_len, msg);
- ofpprop_put_nested(msg, NXPINT_CONTINUATION, continuation);
- ofpmsg_update_length(msg);
- return msg;
-}
-
-static enum ofperr
-parse_subvalue_prop(const struct ofpbuf *property, union mf_subvalue *sv)
-{
- unsigned int len = ofpbuf_msgsize(property);
- if (len > sizeof *sv) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXCPT_STACK property has bad length %u",
- len);
- return OFPERR_OFPBPC_BAD_LEN;
- }
- memset(sv, 0, sizeof *sv);
- memcpy(&sv->u8[sizeof *sv - len], property->msg, len);
- return 0;
-}
-
-static enum ofperr
-parse_actions_property(struct ofpbuf *property, enum ofp_version version,
- struct ofpbuf *ofpacts)
-{
- if (!ofpbuf_try_pull(property, ROUND_UP(ofpbuf_headersize(property), 8))) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "actions property has bad length %"PRIu32,
- property->size);
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- return ofpacts_pull_openflow_actions(property, property->size,
- version, ofpacts);
-}
-
-/* This is like ofputil_decode_packet_in(), except that it decodes the
- * continuation data into 'pin'. The format of this data is supposed to be
- * opaque to any process other than ovs-vswitchd, so this function should not
- * be used outside ovs-vswitchd.
- *
- * When successful, 'pin' contains some dynamically allocated data. Call
- * ofputil_packet_in_private_destroy() to free this data. */
-enum ofperr
-ofputil_decode_packet_in_private(const struct ofp_header *oh, bool loose,
- struct ofputil_packet_in_private *pin,
- size_t *total_len, uint32_t *buffer_id)
-{
- memset(pin, 0, sizeof *pin);
-
- struct ofpbuf continuation;
- enum ofperr error;
- error = ofputil_decode_packet_in(oh, loose, &pin->public, total_len,
- buffer_id, &continuation);
- if (error) {
- return error;
- }
-
- struct ofpbuf actions, action_set;
- ofpbuf_init(&actions, 0);
- ofpbuf_init(&action_set, 0);
-
- uint8_t table_id = 0;
- ovs_be64 cookie = 0;
-
- size_t allocated_stack = 0;
-
- while (continuation.size > 0) {
- struct ofpbuf payload;
- uint64_t type;
-
- error = ofpprop_pull(&continuation, &payload, &type);
- ovs_assert(!error);
-
- switch (type) {
- case NXCPT_BRIDGE:
- error = ofpprop_parse_uuid(&payload, &pin->bridge);
- break;
-
- case NXCPT_STACK:
- if (pin->n_stack >= allocated_stack) {
- pin->stack = x2nrealloc(pin->stack, &allocated_stack,
- sizeof *pin->stack);
- }
- error = parse_subvalue_prop(&payload,
- &pin->stack[pin->n_stack++]);
- break;
-
- case NXCPT_MIRRORS:
- error = ofpprop_parse_u32(&payload, &pin->mirrors);
- break;
-
- case NXCPT_CONNTRACKED:
- pin->conntracked = true;
- break;
-
- case NXCPT_TABLE_ID:
- error = ofpprop_parse_u8(&payload, &table_id);
- break;
-
- case NXCPT_COOKIE:
- error = ofpprop_parse_be64(&payload, &cookie);
- break;
-
- case NXCPT_ACTIONS: {
- struct ofpact_unroll_xlate *unroll
- = ofpact_put_UNROLL_XLATE(&actions);
- unroll->rule_table_id = table_id;
- unroll->rule_cookie = cookie;
- error = parse_actions_property(&payload, oh->version, &actions);
- break;
- }
-
- case NXCPT_ACTION_SET:
- error = parse_actions_property(&payload, oh->version, &action_set);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(loose, "continuation", type);
- break;
- }
- if (error) {
- break;
- }
- }
-
- pin->actions_len = actions.size;
- pin->actions = ofpbuf_steal_data(&actions);
- pin->action_set_len = action_set.size;
- pin->action_set = ofpbuf_steal_data(&action_set);
-
- if (error) {
- ofputil_packet_in_private_destroy(pin);
- }
-
- return 0;
-}
-
-/* Frees data in 'pin' that is dynamically allocated by
- * ofputil_decode_packet_in_private().
- *
- * 'pin->public' contains some pointer members that
- * ofputil_decode_packet_in_private() doesn't initialize to newly allocated
- * data, so this function doesn't free those. */
-void
-ofputil_packet_in_private_destroy(struct ofputil_packet_in_private *pin)
-{
- if (pin) {
- free(pin->stack);
- free(pin->actions);
- free(pin->action_set);
- }
-}
-
-/* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
- * 'po'.
- *
- * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
- * message's actions. The caller must initialize 'ofpacts' and retains
- * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
- *
- * Returns 0 if successful, otherwise an OFPERR_* value. */
-enum ofperr
-ofputil_decode_packet_out(struct ofputil_packet_out *po,
- const struct ofp_header *oh,
- struct ofpbuf *ofpacts)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
-
- ofpbuf_clear(ofpacts);
- 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_openflow_actions(&b, ntohs(opo->actions_len),
- oh->version, ofpacts);
- if (error) {
- return error;
- }
- } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
- enum ofperr error;
- const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
-
- po->buffer_id = ntohl(opo->buffer_id);
- po->in_port = u16_to_ofp(ntohs(opo->in_port));
-
- error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
- oh->version, ofpacts);
- if (error) {
- return error;
- }
- } else {
- OVS_NOT_REACHED();
- }
-
- if (ofp_to_u16(po->in_port) >= ofp_to_u16(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_OFPBRC_BAD_PORT;
- }
-
- po->ofpacts = ofpacts->data;
- po->ofpacts_len = ofpacts->size;
-
- if (po->buffer_id == UINT32_MAX) {
- po->packet = b.data;
- po->packet_len = b.size;
- } else {
- po->packet = NULL;
- po->packet_len = 0;
- }
-
- return 0;
-}
-\f
-/* ofputil_phy_port */
-
-/* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
-BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
-BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
-BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
-BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
-BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
-BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
-BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
-
-/* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
-BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
-BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
-BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
-BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
-BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
-
-static enum netdev_features
-netdev_port_features_from_ofp10(ovs_be32 ofp10_)
-{
- uint32_t ofp10 = ntohl(ofp10_);
- return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
-}
-
-static ovs_be32
-netdev_port_features_to_ofp10(enum netdev_features features)
-{
- return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
-}
-
-BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
-BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
-BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
-BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
-BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
-BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
-BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
-BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
-BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
-BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
-BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
-BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
-BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
-BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
-BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
-BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
-
-static enum netdev_features
-netdev_port_features_from_ofp11(ovs_be32 ofp11)
-{
- return ntohl(ofp11) & 0xffff;
-}
-
-static ovs_be32
-netdev_port_features_to_ofp11(enum netdev_features features)
-{
- return htonl(features & 0xffff);
-}
-
-static enum ofperr
-ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
- const struct ofp10_phy_port *opp)
-{
- pp->port_no = u16_to_ofp(ntohs(opp->port_no));
- pp->hw_addr = opp->hw_addr;
- ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
-
- pp->config = ntohl(opp->config) & OFPPC10_ALL;
- pp->state = ntohl(opp->state) & OFPPS10_ALL;
-
- pp->curr = netdev_port_features_from_ofp10(opp->curr);
- pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
- pp->supported = netdev_port_features_from_ofp10(opp->supported);
- pp->peer = netdev_port_features_from_ofp10(opp->peer);
-
- pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
- pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
-
- return 0;
-}
-
-static enum ofperr
-ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
- const struct ofp11_port *op)
-{
- enum ofperr error;
-
- error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
- if (error) {
- return error;
- }
- pp->hw_addr = op->hw_addr;
- ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
-
- pp->config = ntohl(op->config) & OFPPC11_ALL;
- pp->state = ntohl(op->state) & OFPPS11_ALL;
-
- pp->curr = netdev_port_features_from_ofp11(op->curr);
- pp->advertised = netdev_port_features_from_ofp11(op->advertised);
- pp->supported = netdev_port_features_from_ofp11(op->supported);
- pp->peer = netdev_port_features_from_ofp11(op->peer);
-
- pp->curr_speed = ntohl(op->curr_speed);
- pp->max_speed = ntohl(op->max_speed);
-
- return 0;
-}
-
-static enum ofperr
-parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
- struct ofputil_phy_port *pp)
-{
- struct ofp14_port_desc_prop_ethernet *eth = payload->data;
-
- if (payload->size != sizeof *eth) {
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- pp->curr = netdev_port_features_from_ofp11(eth->curr);
- pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
- pp->supported = netdev_port_features_from_ofp11(eth->supported);
- pp->peer = netdev_port_features_from_ofp11(eth->peer);
-
- pp->curr_speed = ntohl(eth->curr_speed);
- pp->max_speed = ntohl(eth->max_speed);
-
- return 0;
-}
-
-static enum ofperr
-ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
-{
- struct ofp14_port *op = ofpbuf_try_pull(msg, sizeof *op);
- if (!op) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- size_t len = ntohs(op->length);
- if (len < sizeof *op || len - sizeof *op > msg->size) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- len -= sizeof *op;
-
- enum ofperr error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
- if (error) {
- return error;
- }
- pp->hw_addr = op->hw_addr;
- ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
-
- pp->config = ntohl(op->config) & OFPPC11_ALL;
- pp->state = ntohl(op->state) & OFPPS11_ALL;
-
- struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
- len);
- while (properties.size > 0) {
- struct ofpbuf payload;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPPDPT14_ETHERNET:
- error = parse_ofp14_port_ethernet_property(&payload, pp);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(true, "port", type);
- break;
- }
-
- if (error) {
- return error;
- }
- }
-
- return 0;
-}
-
-static void
-ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
- struct ofp10_phy_port *opp)
-{
- memset(opp, 0, sizeof *opp);
-
- opp->port_no = htons(ofp_to_u16(pp->port_no));
- opp->hw_addr = pp->hw_addr;
- ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
-
- opp->config = htonl(pp->config & OFPPC10_ALL);
- opp->state = htonl(pp->state & OFPPS10_ALL);
-
- opp->curr = netdev_port_features_to_ofp10(pp->curr);
- opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
- opp->supported = netdev_port_features_to_ofp10(pp->supported);
- opp->peer = netdev_port_features_to_ofp10(pp->peer);
-}
-
-static void
-ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
- struct ofp11_port *op)
-{
- memset(op, 0, sizeof *op);
-
- op->port_no = ofputil_port_to_ofp11(pp->port_no);
- op->hw_addr = pp->hw_addr;
- ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
-
- op->config = htonl(pp->config & OFPPC11_ALL);
- op->state = htonl(pp->state & OFPPS11_ALL);
-
- op->curr = netdev_port_features_to_ofp11(pp->curr);
- op->advertised = netdev_port_features_to_ofp11(pp->advertised);
- op->supported = netdev_port_features_to_ofp11(pp->supported);
- op->peer = netdev_port_features_to_ofp11(pp->peer);
-
- op->curr_speed = htonl(pp->curr_speed);
- op->max_speed = htonl(pp->max_speed);
-}
-
-static void
-ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
- struct ofpbuf *b)
-{
- struct ofp14_port *op;
- struct ofp14_port_desc_prop_ethernet *eth;
-
- ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
-
- op = ofpbuf_put_zeros(b, sizeof *op);
- op->port_no = ofputil_port_to_ofp11(pp->port_no);
- op->length = htons(sizeof *op + sizeof *eth);
- op->hw_addr = pp->hw_addr;
- ovs_strlcpy(op->name, pp->name, sizeof op->name);
- op->config = htonl(pp->config & OFPPC11_ALL);
- op->state = htonl(pp->state & OFPPS11_ALL);
-
- eth = ofpprop_put_zeros(b, OFPPDPT14_ETHERNET, sizeof *eth);
- eth->curr = netdev_port_features_to_ofp11(pp->curr);
- eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
- eth->supported = netdev_port_features_to_ofp11(pp->supported);
- eth->peer = netdev_port_features_to_ofp11(pp->peer);
- eth->curr_speed = htonl(pp->curr_speed);
- eth->max_speed = htonl(pp->max_speed);
-}
-
-static void
-ofputil_put_phy_port(enum ofp_version ofp_version,
- const struct ofputil_phy_port *pp, struct ofpbuf *b)
-{
- switch (ofp_version) {
- case OFP10_VERSION: {
- struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
- ofputil_encode_ofp10_phy_port(pp, opp);
- break;
- }
-
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION: {
- struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
- ofputil_encode_ofp11_port(pp, op);
- break;
- }
-
- case OFP14_VERSION:
- case OFP15_VERSION:
- ofputil_put_ofp14_port(pp, b);
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-enum ofperr
-ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
- ofp_port_t *port)
-{
- struct ofpbuf b = ofpbuf_const_initializer(request,
- ntohs(request->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
- *port = OFPP_ANY;
- return 0;
- } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
- ovs_be32 *ofp11_port;
-
- ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
- return ofputil_port_from_ofp11(*ofp11_port, port);
- } else {
- OVS_NOT_REACHED();
- }
-}
-
-struct ofpbuf *
-ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
- ofp_port_t port)
-{
- struct ofpbuf *request;
-
- switch (ofp_version) {
- case OFP10_VERSION:
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
- ofp_version, 0);
- break;
- case OFP15_VERSION:{
- struct ofp15_port_desc_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
- ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- req->port_no = ofputil_port_to_ofp11(port);
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-void
-ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
- struct ovs_list *replies)
-{
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- size_t start_ofs = reply->size;
-
- ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
- ofpmp_postappend(replies, start_ofs);
-}
-\f
-/* ofputil_switch_config */
-
-/* Decodes 'oh', which must be an OFPT_GET_CONFIG_REPLY or OFPT_SET_CONFIG
- * message, into 'config'. Returns false if 'oh' contained any flags that
- * aren't specified in its version of OpenFlow, true otherwise. */
-static bool
-ofputil_decode_switch_config(const struct ofp_header *oh,
- struct ofputil_switch_config *config)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&b);
-
- const struct ofp_switch_config *osc = ofpbuf_pull(&b, sizeof *osc);
- config->frag = ntohs(osc->flags) & OFPC_FRAG_MASK;
- config->miss_send_len = ntohs(osc->miss_send_len);
-
- ovs_be16 valid_mask = htons(OFPC_FRAG_MASK);
- if (oh->version < OFP13_VERSION) {
- const ovs_be16 ttl_bit = htons(OFPC_INVALID_TTL_TO_CONTROLLER);
- valid_mask |= ttl_bit;
- config->invalid_ttl_to_controller = (osc->flags & ttl_bit) != 0;
- } else {
- config->invalid_ttl_to_controller = -1;
- }
-
- return !(osc->flags & ~valid_mask);
-}
-
-void
-ofputil_decode_get_config_reply(const struct ofp_header *oh,
- struct ofputil_switch_config *config)
-{
- ofputil_decode_switch_config(oh, config);
-}
-
-enum ofperr
-ofputil_decode_set_config(const struct ofp_header *oh,
- struct ofputil_switch_config *config)
-{
- return (ofputil_decode_switch_config(oh, config)
- ? 0
- : OFPERR_OFPSCFC_BAD_FLAGS);
-}
-
-static struct ofpbuf *
-ofputil_put_switch_config(const struct ofputil_switch_config *config,
- struct ofpbuf *b)
-{
- const struct ofp_header *oh = b->data;
- struct ofp_switch_config *osc = ofpbuf_put_zeros(b, sizeof *osc);
- osc->flags = htons(config->frag);
- if (config->invalid_ttl_to_controller > 0 && oh->version < OFP13_VERSION) {
- osc->flags |= htons(OFPC_INVALID_TTL_TO_CONTROLLER);
- }
- osc->miss_send_len = htons(config->miss_send_len);
- return b;
-}
-
-struct ofpbuf *
-ofputil_encode_get_config_reply(const struct ofp_header *request,
- const struct ofputil_switch_config *config)
-{
- struct ofpbuf *b = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY,
- request, 0);
- return ofputil_put_switch_config(config, b);
-}
-
-struct ofpbuf *
-ofputil_encode_set_config(const struct ofputil_switch_config *config,
- enum ofp_version version)
-{
- struct ofpbuf *b = ofpraw_alloc(OFPRAW_OFPT_SET_CONFIG, version, 0);
- return ofputil_put_switch_config(config, b);
-}
-\f
-/* ofputil_switch_features */
-
-#define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
- 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);
-BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
-BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
-BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
-
-static uint32_t
-ofputil_capabilities_mask(enum ofp_version ofp_version)
-{
- /* Handle capabilities whose bit is unique for all OpenFlow versions */
- switch (ofp_version) {
- case OFP10_VERSION:
- case OFP11_VERSION:
- return OFPC_COMMON | OFPC_ARP_MATCH_IP;
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- return OFPC_COMMON | OFPC12_PORT_BLOCKED;
- default:
- /* Caller needs to check osf->header.version itself */
- return 0;
- }
-}
-
-/* Pulls an OpenFlow "switch_features" structure from 'b' and decodes it into
- * an abstract representation in '*features', readying 'b' to iterate over the
- * OpenFlow port structures following 'osf' with later calls to
- * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an OFPERR_*
- * value. */
-enum ofperr
-ofputil_pull_switch_features(struct ofpbuf *b,
- struct ofputil_switch_features *features)
-{
- const struct ofp_header *oh = b->data;
- enum ofpraw raw = ofpraw_pull_assert(b);
- const struct ofp_switch_features *osf = ofpbuf_pull(b, sizeof *osf);
- features->datapath_id = ntohll(osf->datapath_id);
- features->n_buffers = ntohl(osf->n_buffers);
- features->n_tables = osf->n_tables;
- features->auxiliary_id = 0;
-
- features->capabilities = ntohl(osf->capabilities) &
- ofputil_capabilities_mask(oh->version);
-
- if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
- if (osf->capabilities & htonl(OFPC10_STP)) {
- features->capabilities |= OFPUTIL_C_STP;
- }
- features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
- OFP10_VERSION);
- } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
- || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
- if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
- features->capabilities |= OFPUTIL_C_GROUP_STATS;
- }
- features->ofpacts = 0;
- if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
- features->auxiliary_id = osf->auxiliary_id;
- }
- } else {
- return OFPERR_OFPBRC_BAD_VERSION;
- }
-
- return 0;
-}
-
-/* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
- * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
- * later, an OFPT_FEATURES_REPLY does not list ports at all.
- *
- * Given a buffer 'b' that contains a Features Reply message, this message
- * checks if it contains a complete list of the switch's ports. Returns true,
- * if so. Returns false if the list is missing (OF1.3+) or incomplete
- * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
- * message.
- *
- * When this function returns false, the caller should send an OFPST_PORT_DESC
- * stats request to get the ports. */
-bool
-ofputil_switch_features_has_ports(struct ofpbuf *b)
-{
- struct ofp_header *oh = b->data;
- size_t phy_port_size;
-
- if (oh->version >= OFP13_VERSION) {
- /* OpenFlow 1.3+ never has ports in the feature reply. */
- return false;
- }
-
- phy_port_size = (oh->version == OFP10_VERSION
- ? sizeof(struct ofp10_phy_port)
- : sizeof(struct ofp11_port));
- if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
- /* There's room for additional ports in the feature reply.
- * Assume that the list is complete. */
- return true;
- }
-
- /* The feature reply has no room for more ports. Probably the list is
- * truncated. Drop the ports and tell the caller to retrieve them with
- * OFPST_PORT_DESC. */
- b->size = sizeof *oh + sizeof(struct ofp_switch_features);
- ofpmsg_update_length(b);
- return false;
-}
-
-/* Returns a buffer owned by the caller that encodes 'features' in the format
- * required by 'protocol' with the given 'xid'. The caller should append port
- * information to the buffer with subsequent calls to
- * ofputil_put_switch_features_port(). */
-struct ofpbuf *
-ofputil_encode_switch_features(const struct ofputil_switch_features *features,
- enum ofputil_protocol protocol, ovs_be32 xid)
-{
- struct ofp_switch_features *osf;
- struct ofpbuf *b;
- enum ofp_version version;
- enum ofpraw raw;
-
- version = ofputil_protocol_to_ofp_version(protocol);
- switch (version) {
- case OFP10_VERSION:
- raw = OFPRAW_OFPT10_FEATURES_REPLY;
- break;
- case OFP11_VERSION:
- case OFP12_VERSION:
- raw = OFPRAW_OFPT11_FEATURES_REPLY;
- break;
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- raw = OFPRAW_OFPT13_FEATURES_REPLY;
- break;
- default:
- OVS_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);
- 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 = ofpact_bitmap_to_openflow(features->ofpacts,
- OFP10_VERSION);
- break;
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- osf->auxiliary_id = features->auxiliary_id;
- /* fall through */
- case OFP11_VERSION:
- case OFP12_VERSION:
- if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
- osf->capabilities |= htonl(OFPC11_GROUP_STATS);
- }
- break;
- default:
- OVS_NOT_REACHED();
- }
-
- return b;
-}
-
-/* Encodes 'pp' into the format required by the switch_features message already
- * in 'b', which should have been returned by ofputil_encode_switch_features(),
- * and appends the encoded version to 'b'. */
-void
-ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
- struct ofpbuf *b)
-{
- const struct ofp_header *oh = b->data;
-
- if (oh->version < OFP13_VERSION) {
- /* Try adding a port description to the message, but drop it again if
- * the buffer overflows. (This possibility for overflow is why
- * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
- size_t start_ofs = b->size;
- ofputil_put_phy_port(oh->version, pp, b);
- if (b->size > UINT16_MAX) {
- b->size = start_ofs;
- }
- }
-}
-\f
-/* ofputil_port_status */
-
-/* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
- * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
-enum ofperr
-ofputil_decode_port_status(const struct ofp_header *oh,
- struct ofputil_port_status *ps)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&b);
-
- const struct ofp_port_status *ops = ofpbuf_pull(&b, sizeof *ops);
- if (ops->reason != OFPPR_ADD &&
- ops->reason != OFPPR_DELETE &&
- ops->reason != OFPPR_MODIFY) {
- return OFPERR_NXBRC_BAD_REASON;
- }
- ps->reason = ops->reason;
-
- int retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
- ovs_assert(retval != EOF);
- return retval;
-}
-
-/* Converts the abstract form of a "port status" message in '*ps' into an
- * OpenFlow message suitable for 'protocol', and returns that encoded form in
- * a buffer owned by the caller. */
-struct ofpbuf *
-ofputil_encode_port_status(const struct ofputil_port_status *ps,
- enum ofputil_protocol protocol)
-{
- struct ofp_port_status *ops;
- struct ofpbuf *b;
- enum ofp_version version;
- enum ofpraw raw;
-
- version = ofputil_protocol_to_ofp_version(protocol);
- switch (version) {
- case OFP10_VERSION:
- raw = OFPRAW_OFPT10_PORT_STATUS;
- break;
-
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- raw = OFPRAW_OFPT11_PORT_STATUS;
- break;
-
- case OFP14_VERSION:
- case OFP15_VERSION:
- raw = OFPRAW_OFPT14_PORT_STATUS;
- break;
-
- default:
- OVS_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);
- ofpmsg_update_length(b);
- return b;
-}
-
-/* ofputil_port_mod */
-
-static enum ofperr
-parse_port_mod_ethernet_property(struct ofpbuf *property,
- struct ofputil_port_mod *pm)
-{
- ovs_be32 advertise;
- enum ofperr error;
-
- error = ofpprop_parse_be32(property, &advertise);
- if (!error) {
- pm->advertise = netdev_port_features_from_ofp11(advertise);
- }
- return error;
-}
-
-/* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
- * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
-enum ofperr
-ofputil_decode_port_mod(const struct ofp_header *oh,
- struct ofputil_port_mod *pm, bool loose)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPT10_PORT_MOD) {
- const struct ofp10_port_mod *opm = b.data;
-
- pm->port_no = u16_to_ofp(ntohs(opm->port_no));
- pm->hw_addr = opm->hw_addr;
- pm->config = ntohl(opm->config) & OFPPC10_ALL;
- pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
- pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
- } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
- const struct ofp11_port_mod *opm = b.data;
- enum ofperr error;
-
- error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
- if (error) {
- return error;
- }
-
- pm->hw_addr = opm->hw_addr;
- pm->config = ntohl(opm->config) & OFPPC11_ALL;
- pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
- pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
- } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
- const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
- enum ofperr error;
-
- memset(pm, 0, sizeof *pm);
-
- error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
- if (error) {
- return error;
- }
-
- pm->hw_addr = opm->hw_addr;
- pm->config = ntohl(opm->config) & OFPPC11_ALL;
- pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
-
- while (b.size > 0) {
- struct ofpbuf property;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull(&b, &property, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPPMPT14_ETHERNET:
- error = parse_port_mod_ethernet_property(&property, pm);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(loose, "port_mod", type);
- break;
- }
-
- if (error) {
- return error;
- }
- }
- } else {
- return OFPERR_OFPBRC_BAD_TYPE;
- }
-
- pm->config &= pm->mask;
- return 0;
-}
-
-/* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
- * message suitable for 'protocol', and returns that encoded form in a buffer
- * owned by the caller. */
-struct ofpbuf *
-ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
- enum ofputil_protocol protocol)
-{
- enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
- struct ofpbuf *b;
-
- switch (ofp_version) {
- case OFP10_VERSION: {
- struct ofp10_port_mod *opm;
-
- b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
- opm = ofpbuf_put_zeros(b, sizeof *opm);
- opm->port_no = htons(ofp_to_u16(pm->port_no));
- opm->hw_addr = pm->hw_addr;
- opm->config = htonl(pm->config & OFPPC10_ALL);
- opm->mask = htonl(pm->mask & OFPPC10_ALL);
- opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
- break;
- }
-
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION: {
- struct ofp11_port_mod *opm;
-
- b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
- opm = ofpbuf_put_zeros(b, sizeof *opm);
- opm->port_no = ofputil_port_to_ofp11(pm->port_no);
- opm->hw_addr = pm->hw_addr;
- opm->config = htonl(pm->config & OFPPC11_ALL);
- opm->mask = htonl(pm->mask & OFPPC11_ALL);
- opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
- break;
- }
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp14_port_mod *opm;
-
- b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, 0);
- opm = ofpbuf_put_zeros(b, sizeof *opm);
- opm->port_no = ofputil_port_to_ofp11(pm->port_no);
- opm->hw_addr = pm->hw_addr;
- opm->config = htonl(pm->config & OFPPC11_ALL);
- opm->mask = htonl(pm->mask & OFPPC11_ALL);
-
- if (pm->advertise) {
- ofpprop_put_be32(b, OFPPMPT14_ETHERNET,
- netdev_port_features_to_ofp11(pm->advertise));
- }
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return b;
-}
-\f
-/* Table features. */
-
-static enum ofperr
-pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
- uint64_t *typep)
-{
- enum ofperr error;
-
- error = ofpprop_pull(msg, payload, typep);
- if (payload && !error) {
- ofpbuf_pull(payload, (char *)payload->msg - (char *)payload->header);
- }
- return error;
-}
-
-static enum ofperr
-parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
- uint64_t *ofpacts)
-{
- uint32_t types = 0;
-
- while (payload->size > 0) {
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull__(payload, NULL, 1, 0x10000, &type);
- if (error) {
- return error;
- }
- if (type < CHAR_BIT * sizeof types) {
- types |= 1u << type;
- }
- }
-
- *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
- return 0;
-}
-
-static enum ofperr
-parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
-{
- *insts = 0;
- while (payload->size > 0) {
- enum ovs_instruction_type inst;
- enum ofperr error;
- uint64_t ofpit;
-
- /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
- * It seems clear that they aren't padded to 8 bytes, though, because
- * both standards say that "non-experimenter instructions are 4 bytes"
- * and do not mention any padding before the first instruction ID.
- * (There wouldn't be any point in padding to 8 bytes if the IDs were
- * aligned on an odd 4-byte boundary.)
- *
- * Anyway, we just assume they're all glommed together on byte
- * boundaries. */
- error = ofpprop_pull__(payload, NULL, 1, 0x10000, &ofpit);
- if (error) {
- return error;
- }
-
- error = ovs_instruction_type_from_inst_type(&inst, ofpit);
- if (!error) {
- *insts |= 1u << inst;
- } else if (!loose) {
- return error;
- }
- }
- return 0;
-}
-
-static enum ofperr
-parse_table_features_next_table(struct ofpbuf *payload,
- unsigned long int *next_tables)
-{
- size_t i;
-
- memset(next_tables, 0, bitmap_n_bytes(255));
- for (i = 0; i < payload->size; i++) {
- uint8_t id = ((const uint8_t *) payload->data)[i];
- if (id >= 255) {
- return OFPERR_OFPBPC_BAD_VALUE;
- }
- bitmap_set1(next_tables, id);
- }
- return 0;
-}
-
-static enum ofperr
-parse_oxms(struct ofpbuf *payload, bool loose,
- struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
-{
- struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
- struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
-
- while (payload->size > 0) {
- const struct mf_field *field;
- enum ofperr error;
- bool hasmask;
-
- error = nx_pull_header(payload, &field, &hasmask);
- if (!error) {
- bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
- } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
- return error;
- }
- }
- if (exactp) {
- *exactp = exact;
- } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
- return OFPERR_OFPBMC_BAD_MASK;
- }
- if (maskedp) {
- *maskedp = masked;
- } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
- return OFPERR_OFPBMC_BAD_MASK;
- }
- return 0;
-}
-
-/* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
- * ofputil_table_features in 'tf'.
- *
- * If 'loose' is true, this function ignores properties and values that it does
- * not understand, as a controller would want to do when interpreting
- * capabilities provided by a switch. If 'loose' is false, this function
- * treats unknown properties and values as an error, as a switch would want to
- * do when interpreting a configuration request made by a controller.
- *
- * A single OpenFlow message can specify features for multiple tables. Calling
- * this function multiple times for a single 'msg' iterates through the tables
- * in the message. The caller must initially leave 'msg''s layer pointers null
- * and not modify them between calls.
- *
- * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
- * a positive "enum ofperr" value. */
-int
-ofputil_decode_table_features(struct ofpbuf *msg,
- struct ofputil_table_features *tf, bool loose)
-{
- memset(tf, 0, sizeof *tf);
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- const struct ofp_header *oh = msg->header;
- struct ofp13_table_features *otf = msg->data;
- if (msg->size < sizeof *otf) {
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- unsigned int len = ntohs(otf->length);
- if (len < sizeof *otf || len % 8 || len > msg->size) {
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- tf->table_id = otf->table_id;
- if (tf->table_id == OFPTT_ALL) {
- return OFPERR_OFPTFFC_BAD_TABLE;
- }
-
- ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
- tf->metadata_match = otf->metadata_match;
- tf->metadata_write = otf->metadata_write;
- tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
- if (oh->version >= OFP14_VERSION) {
- uint32_t caps = ntohl(otf->capabilities);
- tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
- tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
- } else {
- tf->supports_eviction = -1;
- tf->supports_vacancy_events = -1;
- }
- tf->max_entries = ntohl(otf->max_entries);
-
- struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
- len);
- ofpbuf_pull(&properties, sizeof *otf);
- while (properties.size > 0) {
- struct ofpbuf payload;
- enum ofperr error;
- uint64_t type;
-
- error = pull_table_feature_property(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch ((enum ofp13_table_feature_prop_type) type) {
- case OFPTFPT13_INSTRUCTIONS:
- error = parse_instruction_ids(&payload, loose,
- &tf->nonmiss.instructions);
- break;
- case OFPTFPT13_INSTRUCTIONS_MISS:
- error = parse_instruction_ids(&payload, loose,
- &tf->miss.instructions);
- break;
-
- case OFPTFPT13_NEXT_TABLES:
- error = parse_table_features_next_table(&payload,
- tf->nonmiss.next);
- break;
- case OFPTFPT13_NEXT_TABLES_MISS:
- error = parse_table_features_next_table(&payload, tf->miss.next);
- break;
-
- case OFPTFPT13_WRITE_ACTIONS:
- error = parse_action_bitmap(&payload, oh->version,
- &tf->nonmiss.write.ofpacts);
- break;
- case OFPTFPT13_WRITE_ACTIONS_MISS:
- error = parse_action_bitmap(&payload, oh->version,
- &tf->miss.write.ofpacts);
- break;
-
- case OFPTFPT13_APPLY_ACTIONS:
- error = parse_action_bitmap(&payload, oh->version,
- &tf->nonmiss.apply.ofpacts);
- break;
- case OFPTFPT13_APPLY_ACTIONS_MISS:
- error = parse_action_bitmap(&payload, oh->version,
- &tf->miss.apply.ofpacts);
- break;
-
- case OFPTFPT13_MATCH:
- error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
- break;
- case OFPTFPT13_WILDCARDS:
- error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
- break;
-
- case OFPTFPT13_WRITE_SETFIELD:
- error = parse_oxms(&payload, loose,
- &tf->nonmiss.write.set_fields, NULL);
- break;
- case OFPTFPT13_WRITE_SETFIELD_MISS:
- error = parse_oxms(&payload, loose,
- &tf->miss.write.set_fields, NULL);
- break;
- case OFPTFPT13_APPLY_SETFIELD:
- error = parse_oxms(&payload, loose,
- &tf->nonmiss.apply.set_fields, NULL);
- break;
- case OFPTFPT13_APPLY_SETFIELD_MISS:
- error = parse_oxms(&payload, loose,
- &tf->miss.apply.set_fields, NULL);
- break;
-
- case OFPTFPT13_EXPERIMENTER:
- case OFPTFPT13_EXPERIMENTER_MISS:
- default:
- error = OFPPROP_UNKNOWN(loose, "table features", type);
- break;
- }
- if (error) {
- return error;
- }
- }
-
- /* Fix inconsistencies:
- *
- * - Turn on 'match' bits that are set in 'mask', because maskable
- * fields are matchable.
- *
- * - Turn on 'wildcard' bits that are set in 'mask', because a field
- * that is arbitrarily maskable can be wildcarded entirely.
- *
- * - Turn off 'wildcard' bits that are not in 'match', because a field
- * must be matchable for it to be meaningfully wildcarded. */
- bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
- bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
- bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
-
- return 0;
-}
-
-/* Encodes and returns a request to obtain the table features of a switch.
- * The message is encoded for OpenFlow version 'ofp_version'. */
-struct ofpbuf *
-ofputil_encode_table_features_request(enum ofp_version ofp_version)
-{
- struct ofpbuf *request = NULL;
-
- switch (ofp_version) {
- case OFP10_VERSION:
- case OFP11_VERSION:
- case OFP12_VERSION:
- ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
- "(\'-O OpenFlow13\')");
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
- ofp_version, 0);
- break;
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-static void
-put_fields_property(struct ofpbuf *reply,
- const struct mf_bitmap *fields,
- const struct mf_bitmap *masks,
- enum ofp13_table_feature_prop_type property,
- enum ofp_version version)
-{
- size_t start_ofs;
- int field;
-
- start_ofs = ofpprop_start(reply, property);
- BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
- nx_put_header(reply, field, version,
- masks && bitmap_is_set(masks->bm, field));
- }
- ofpprop_end(reply, start_ofs);
-}
-
-static void
-put_table_action_features(struct ofpbuf *reply,
- const struct ofputil_table_action_features *taf,
- enum ofp13_table_feature_prop_type actions_type,
- enum ofp13_table_feature_prop_type set_fields_type,
- int miss_offset, enum ofp_version version)
-{
- ofpprop_put_bitmap(reply, actions_type + miss_offset,
- ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
- version)));
- put_fields_property(reply, &taf->set_fields, NULL,
- set_fields_type + miss_offset, version);
-}
-
-static void
-put_table_instruction_features(
- struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
- int miss_offset, enum ofp_version version)
-{
- size_t start_ofs;
- uint8_t table_id;
-
- ofpprop_put_bitmap(reply, OFPTFPT13_INSTRUCTIONS + miss_offset,
- ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
- version)));
-
- start_ofs = ofpprop_start(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
- BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
- ofpbuf_put(reply, &table_id, 1);
- }
- ofpprop_end(reply, start_ofs);
-
- put_table_action_features(reply, &tif->write,
- OFPTFPT13_WRITE_ACTIONS,
- OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
- put_table_action_features(reply, &tif->apply,
- OFPTFPT13_APPLY_ACTIONS,
- OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
-}
-
-void
-ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
- struct ovs_list *replies)
-{
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- enum ofp_version version = ofpmp_version(replies);
- size_t start_ofs = reply->size;
- struct ofp13_table_features *otf;
-
- otf = ofpbuf_put_zeros(reply, sizeof *otf);
- otf->table_id = tf->table_id;
- ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
- otf->metadata_match = tf->metadata_match;
- otf->metadata_write = tf->metadata_write;
- if (version >= OFP14_VERSION) {
- if (tf->supports_eviction) {
- otf->capabilities |= htonl(OFPTC14_EVICTION);
- }
- if (tf->supports_vacancy_events) {
- otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
- }
- }
- otf->max_entries = htonl(tf->max_entries);
-
- put_table_instruction_features(reply, &tf->nonmiss, 0, version);
- put_table_instruction_features(reply, &tf->miss, 1, version);
-
- put_fields_property(reply, &tf->match, &tf->mask,
- OFPTFPT13_MATCH, version);
- put_fields_property(reply, &tf->wildcard, NULL,
- OFPTFPT13_WILDCARDS, version);
-
- otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
- otf->length = htons(reply->size - start_ofs);
- ofpmp_postappend(replies, start_ofs);
-}
-
-static enum ofperr
-parse_table_desc_vacancy_property(struct ofpbuf *property,
- struct ofputil_table_desc *td)
-{
- struct ofp14_table_mod_prop_vacancy *otv = property->data;
-
- if (property->size != sizeof *otv) {
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- td->table_vacancy.vacancy_down = otv->vacancy_down;
- td->table_vacancy.vacancy_up = otv->vacancy_up;
- td->table_vacancy.vacancy = otv->vacancy;
- return 0;
-}
-
-/* Decodes the next OpenFlow "table desc" message (of possibly several) from
- * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
- * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
- * value. */
-int
-ofputil_decode_table_desc(struct ofpbuf *msg,
- struct ofputil_table_desc *td,
- enum ofp_version version)
-{
- memset(td, 0, sizeof *td);
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- struct ofp14_table_desc *otd = ofpbuf_try_pull(msg, sizeof *otd);
- if (!otd) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
- "leftover bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- td->table_id = otd->table_id;
- size_t length = ntohs(otd->length);
- if (length < sizeof *otd || length - sizeof *otd > msg->size) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
- "length %"PRIuSIZE, length);
- return OFPERR_OFPBRC_BAD_LEN;
- }
- length -= sizeof *otd;
-
- td->eviction = ofputil_decode_table_eviction(otd->config, version);
- td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
- td->eviction_flags = UINT32_MAX;
-
- struct ofpbuf properties = ofpbuf_const_initializer(
- ofpbuf_pull(msg, length), length);
- while (properties.size > 0) {
- struct ofpbuf payload;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPTMPT14_EVICTION:
- error = ofpprop_parse_u32(&payload, &td->eviction_flags);
- break;
-
- case OFPTMPT14_VACANCY:
- error = parse_table_desc_vacancy_property(&payload, td);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(true, "table_desc", type);
- break;
- }
-
- if (error) {
- return error;
- }
- }
-
- return 0;
-}
-
-/* Encodes and returns a request to obtain description of tables of a switch.
- * The message is encoded for OpenFlow version 'ofp_version'. */
-struct ofpbuf *
-ofputil_encode_table_desc_request(enum ofp_version ofp_version)
-{
- struct ofpbuf *request = NULL;
-
- if (ofp_version >= OFP14_VERSION) {
- request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
- ofp_version, 0);
- } else {
- ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
- "(\'-O OpenFlow14\')");
- }
-
- return request;
-}
-
-/* Function to append Table desc information in a reply list. */
-void
-ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
- struct ovs_list *replies,
- enum ofp_version version)
-{
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- size_t start_otd;
- struct ofp14_table_desc *otd;
-
- start_otd = reply->size;
- ofpbuf_put_zeros(reply, sizeof *otd);
- if (td->eviction_flags != UINT32_MAX) {
- ofpprop_put_u32(reply, OFPTMPT14_EVICTION, td->eviction_flags);
- }
- if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
- struct ofp14_table_mod_prop_vacancy *otv;
-
- otv = ofpprop_put_zeros(reply, OFPTMPT14_VACANCY, sizeof *otv);
- otv->vacancy_down = td->table_vacancy.vacancy_down;
- otv->vacancy_up = td->table_vacancy.vacancy_up;
- otv->vacancy = td->table_vacancy.vacancy;
- }
-
- otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
- otd->length = htons(reply->size - start_otd);
- otd->table_id = td->table_id;
- otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
- td->eviction, td->vacancy,
- version);
- ofpmp_postappend(replies, start_otd);
-}
-
-/* This function parses Vacancy property, and decodes the
- * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
- * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
- * greater than vacancy_up and also when current vacancy has non-zero
- * value. Returns 0 on success. */
-static enum ofperr
-parse_table_mod_vacancy_property(struct ofpbuf *property,
- struct ofputil_table_mod *tm)
-{
- struct ofp14_table_mod_prop_vacancy *otv = property->data;
-
- if (property->size != sizeof *otv) {
- return OFPERR_OFPBPC_BAD_LEN;
- }
- tm->table_vacancy.vacancy_down = otv->vacancy_down;
- tm->table_vacancy.vacancy_up = otv->vacancy_up;
- if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
- OFPPROP_LOG(&bad_ofmsg_rl, false,
- "Value of vacancy_down is greater than vacancy_up");
- return OFPERR_OFPBPC_BAD_VALUE;
- }
- if (tm->table_vacancy.vacancy_down > 100 ||
- tm->table_vacancy.vacancy_up > 100) {
- OFPPROP_LOG(&bad_ofmsg_rl, false, "Vacancy threshold percentage "
- "should not be greater than 100");
- return OFPERR_OFPBPC_BAD_VALUE;
- }
- tm->table_vacancy.vacancy = otv->vacancy;
- if (tm->table_vacancy.vacancy) {
- OFPPROP_LOG(&bad_ofmsg_rl, false,
- "Vacancy value should be zero for table-mod messages");
- return OFPERR_OFPBPC_BAD_VALUE;
- }
- return 0;
-}
-
-/* Given 'config', taken from an OpenFlow 'version' message that specifies
- * table configuration (a table mod, table stats, or table features message),
- * returns the table vacancy configuration that it specifies.
- *
- * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
- * so for other 'version' this function always returns
- * OFPUTIL_TABLE_VACANCY_DEFAULT. */
-static enum ofputil_table_vacancy
-ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
-{
- return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
- : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
- : OFPUTIL_TABLE_VACANCY_OFF);
-}
-
-/* Given 'config', taken from an OpenFlow 'version' message that specifies
- * table configuration (a table mod, table stats, or table features message),
- * returns the table eviction configuration that it specifies.
- *
- * Only OpenFlow 1.4 and later specify table eviction configuration this way,
- * so for other 'version' values this function always returns
- * OFPUTIL_TABLE_EVICTION_DEFAULT. */
-static enum ofputil_table_eviction
-ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
-{
- return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
- : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
- : OFPUTIL_TABLE_EVICTION_OFF);
-}
-
-/* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
- * OpenFlow messages of the given 'version', based on the provided 'miss' and
- * 'eviction' values. */
-static ovs_be32
-ofputil_encode_table_config(enum ofputil_table_miss miss,
- enum ofputil_table_eviction eviction,
- enum ofputil_table_vacancy vacancy,
- enum ofp_version version)
-{
- uint32_t config = 0;
- /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
- * information on the crazy evolution of this field. */
- switch (version) {
- case OFP10_VERSION:
- /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
- return htonl(0);
-
- case OFP11_VERSION:
- case OFP12_VERSION:
- /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
- switch (miss) {
- case OFPUTIL_TABLE_MISS_DEFAULT:
- /* Really this shouldn't be used for encoding (the caller should
- * provide a specific value) but I can't imagine that defaulting to
- * the fall-through case here will hurt. */
- case OFPUTIL_TABLE_MISS_CONTROLLER:
- default:
- return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
- case OFPUTIL_TABLE_MISS_CONTINUE:
- return htonl(OFPTC11_TABLE_MISS_CONTINUE);
- case OFPUTIL_TABLE_MISS_DROP:
- return htonl(OFPTC11_TABLE_MISS_DROP);
- }
- OVS_NOT_REACHED();
-
- case OFP13_VERSION:
- /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
- * flags, so this is correct. */
- return htonl(0);
-
- case OFP14_VERSION:
- case OFP15_VERSION:
- /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
- * OFPTC14_VACANCY_EVENTS. */
- if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
- config |= OFPTC14_EVICTION;
- }
- if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
- config |= OFPTC14_VACANCY_EVENTS;
- }
- return htonl(config);
- }
-
- OVS_NOT_REACHED();
-}
-
-/* Given 'config', taken from an OpenFlow 'version' message that specifies
- * table configuration (a table mod, table stats, or table features message),
- * returns the table miss configuration that it specifies.
- *
- * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
- * other 'version' values this function always returns
- * OFPUTIL_TABLE_MISS_DEFAULT. */
-static enum ofputil_table_miss
-ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
-{
- uint32_t config = ntohl(config_);
-
- if (version == OFP11_VERSION || version == OFP12_VERSION) {
- switch (config & OFPTC11_TABLE_MISS_MASK) {
- case OFPTC11_TABLE_MISS_CONTROLLER:
- return OFPUTIL_TABLE_MISS_CONTROLLER;
-
- case OFPTC11_TABLE_MISS_CONTINUE:
- return OFPUTIL_TABLE_MISS_CONTINUE;
-
- case OFPTC11_TABLE_MISS_DROP:
- return OFPUTIL_TABLE_MISS_DROP;
-
- default:
- VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
- return OFPUTIL_TABLE_MISS_CONTROLLER;
- }
- } else {
- return OFPUTIL_TABLE_MISS_DEFAULT;
- }
-}
-
-/* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
- * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
-enum ofperr
-ofputil_decode_table_mod(const struct ofp_header *oh,
- struct ofputil_table_mod *pm)
-{
- memset(pm, 0, sizeof *pm);
- pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
- pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
- pm->eviction_flags = UINT32_MAX;
- pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
-
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPT11_TABLE_MOD) {
- const struct ofp11_table_mod *otm = b.data;
-
- pm->table_id = otm->table_id;
- pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
- } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
- const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
-
- pm->table_id = otm->table_id;
- pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
- pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
- pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
- while (b.size > 0) {
- struct ofpbuf property;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull(&b, &property, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPTMPT14_EVICTION:
- error = ofpprop_parse_u32(&property, &pm->eviction);
- break;
-
- case OFPTMPT14_VACANCY:
- error = parse_table_mod_vacancy_property(&property, pm);
- break;
-
- default:
- error = OFPERR_OFPBRC_BAD_TYPE;
- break;
- }
-
- if (error) {
- return error;
- }
- }
- } else {
- return OFPERR_OFPBRC_BAD_TYPE;
- }
-
- return 0;
-}
-
-/* Converts the abstract form of a "table mod" message in '*tm' into an
- * OpenFlow message suitable for 'protocol', and returns that encoded form in a
- * buffer owned by the caller. */
-struct ofpbuf *
-ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
- enum ofputil_protocol protocol)
-{
- enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
- struct ofpbuf *b;
-
- switch (ofp_version) {
- case OFP10_VERSION: {
- ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
- "(\'-O OpenFlow11\')");
- break;
- }
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION: {
- struct ofp11_table_mod *otm;
-
- b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
- otm = ofpbuf_put_zeros(b, sizeof *otm);
- otm->table_id = tm->table_id;
- otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
- tm->vacancy, ofp_version);
- break;
- }
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp14_table_mod *otm;
-
- b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
- otm = ofpbuf_put_zeros(b, sizeof *otm);
- otm->table_id = tm->table_id;
- otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
- tm->vacancy, ofp_version);
-
- if (tm->eviction_flags != UINT32_MAX) {
- ofpprop_put_u32(b, OFPTMPT14_EVICTION, tm->eviction_flags);
- }
- if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
- struct ofp14_table_mod_prop_vacancy *otv;
-
- otv = ofpprop_put_zeros(b, OFPTMPT14_VACANCY, sizeof *otv);
- otv->vacancy_down = tm->table_vacancy.vacancy_down;
- otv->vacancy_up = tm->table_vacancy.vacancy_up;
- }
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return b;
-}
-\f
-/* ofputil_role_request */
-
-/* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
- * an abstract form in '*rr'. Returns 0 if successful, otherwise an
- * OFPERR_* value. */
-enum ofperr
-ofputil_decode_role_message(const struct ofp_header *oh,
- struct ofputil_role_request *rr)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
- raw == OFPRAW_OFPT12_ROLE_REPLY) {
- const struct ofp12_role_request *orr = b.msg;
-
- if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
- orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
- orr->role != htonl(OFPCR12_ROLE_MASTER) &&
- orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
- return OFPERR_OFPRRFC_BAD_ROLE;
- }
-
- rr->role = ntohl(orr->role);
- if (raw == OFPRAW_OFPT12_ROLE_REQUEST
- ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
- : orr->generation_id == OVS_BE64_MAX) {
- rr->have_generation_id = false;
- rr->generation_id = 0;
- } else {
- rr->have_generation_id = true;
- rr->generation_id = ntohll(orr->generation_id);
- }
- } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
- raw == OFPRAW_NXT_ROLE_REPLY) {
- const struct nx_role_request *nrr = b.msg;
-
- BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
- BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
- BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
-
- if (nrr->role != htonl(NX_ROLE_OTHER) &&
- nrr->role != htonl(NX_ROLE_MASTER) &&
- nrr->role != htonl(NX_ROLE_SLAVE)) {
- return OFPERR_OFPRRFC_BAD_ROLE;
- }
-
- rr->role = ntohl(nrr->role) + 1;
- rr->have_generation_id = false;
- rr->generation_id = 0;
- } else {
- OVS_NOT_REACHED();
- }
-
- return 0;
-}
-
-/* Returns an encoded form of a role reply suitable for the "request" in a
- * buffer owned by the caller. */
-struct ofpbuf *
-ofputil_encode_role_reply(const struct ofp_header *request,
- const struct ofputil_role_request *rr)
-{
- struct ofpbuf *buf;
- enum ofpraw raw;
-
- raw = ofpraw_decode_assert(request);
- if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
- struct ofp12_role_request *orr;
-
- buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
- orr = ofpbuf_put_zeros(buf, sizeof *orr);
-
- orr->role = htonl(rr->role);
- orr->generation_id = htonll(rr->have_generation_id
- ? rr->generation_id
- : UINT64_MAX);
- } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
- struct nx_role_request *nrr;
-
- BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
- BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
- BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
-
- buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
- nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
- nrr->role = htonl(rr->role - 1);
- } else {
- OVS_NOT_REACHED();
- }
-
- return buf;
-}
-\f
-/* Encodes "role status" message 'status' for sending in the given
- * 'protocol'. Returns the role status message, if 'protocol' supports them,
- * otherwise a null pointer. */
-struct ofpbuf *
-ofputil_encode_role_status(const struct ofputil_role_status *status,
- enum ofputil_protocol protocol)
-{
- enum ofp_version version;
-
- version = ofputil_protocol_to_ofp_version(protocol);
- if (version >= OFP14_VERSION) {
- struct ofp14_role_status *rstatus;
- struct ofpbuf *buf;
-
- buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
- 0);
- rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
- rstatus->role = htonl(status->role);
- rstatus->reason = status->reason;
- rstatus->generation_id = htonll(status->generation_id);
-
- return buf;
- } else {
- return NULL;
- }
-}
-
-enum ofperr
-ofputil_decode_role_status(const struct ofp_header *oh,
- struct ofputil_role_status *rs)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
-
- const struct ofp14_role_status *r = b.msg;
- if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
- r->role != htonl(OFPCR12_ROLE_EQUAL) &&
- r->role != htonl(OFPCR12_ROLE_MASTER) &&
- r->role != htonl(OFPCR12_ROLE_SLAVE)) {
- return OFPERR_OFPRRFC_BAD_ROLE;
- }
-
- rs->role = ntohl(r->role);
- rs->generation_id = ntohll(r->generation_id);
- rs->reason = r->reason;
-
- return 0;
-}
-
-/* Encodes 'rf' according to 'protocol', and returns the encoded message.
- * 'protocol' must be for OpenFlow 1.4 or later. */
-struct ofpbuf *
-ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
- enum ofputil_protocol protocol)
-{
- enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
- struct ofpbuf *inner;
-
- switch (rf->reason) {
- case OFPRFR_GROUP_MOD:
- inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
- break;
-
- case OFPRFR_METER_MOD:
- inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
- break;
-
- case OFPRFR_N_REASONS:
- default:
- OVS_NOT_REACHED();
- }
-
- struct ofp_header *inner_oh = inner->data;
- inner_oh->xid = rf->xid;
- inner_oh->length = htons(inner->size);
-
- struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
- ofp_version, htonl(0),
- inner->size);
- ofpbuf_put(outer, inner->data, inner->size);
- ofpbuf_delete(inner);
-
- return outer;
-}
-
-/* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
- * form into '*rf' and returns 0, and the caller is later responsible for
- * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
- * failure, returns an ofperr and '*rf' is indeterminate. */
-enum ofperr
-ofputil_decode_requestforward(const struct ofp_header *outer,
- struct ofputil_requestforward *rf)
-{
- struct ofpbuf b = ofpbuf_const_initializer(outer, ntohs(outer->length));
-
- /* Skip past outer message. */
- enum ofpraw outer_raw = ofpraw_pull_assert(&b);
- ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
-
- /* Validate inner message. */
- if (b.size < sizeof(struct ofp_header)) {
- return OFPERR_OFPBFC_MSG_BAD_LEN;
- }
- const struct ofp_header *inner = b.data;
- unsigned int inner_len = ntohs(inner->length);
- if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
- return OFPERR_OFPBFC_MSG_BAD_LEN;
- }
- if (inner->version != outer->version) {
- return OFPERR_OFPBRC_BAD_VERSION;
- }
-
- /* Parse inner message. */
- enum ofptype type;
- enum ofperr error = ofptype_decode(&type, inner);
- if (error) {
- return error;
- }
-
- rf->xid = inner->xid;
- if (type == OFPTYPE_GROUP_MOD) {
- rf->reason = OFPRFR_GROUP_MOD;
- rf->group_mod = xmalloc(sizeof *rf->group_mod);
- error = ofputil_decode_group_mod(inner, rf->group_mod);
- if (error) {
- free(rf->group_mod);
- return error;
- }
- } else if (type == OFPTYPE_METER_MOD) {
- rf->reason = OFPRFR_METER_MOD;
- rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
- ofpbuf_init(&rf->bands, 64);
- error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
- if (error) {
- free(rf->meter_mod);
- ofpbuf_uninit(&rf->bands);
- return error;
- }
- } else {
- return OFPERR_OFPBFC_MSG_UNSUP;
- }
-
- return 0;
-}
-
-/* Frees the content of 'rf', which should have been initialized through a
- * successful call to ofputil_decode_requestforward(). */
-void
-ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
-{
- if (!rf) {
- return;
- }
-
- switch (rf->reason) {
- case OFPRFR_GROUP_MOD:
- ofputil_uninit_group_mod(rf->group_mod);
- free(rf->group_mod);
- break;
-
- case OFPRFR_METER_MOD:
- ofpbuf_uninit(&rf->bands);
- free(rf->meter_mod);
- break;
-
- case OFPRFR_N_REASONS:
- OVS_NOT_REACHED();
- }
-}
-
-/* Table stats. */
-
-/* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
- * matched and a field that must be wildcarded. This function returns a bitmap
- * that contains both kinds of fields. */
-static struct mf_bitmap
-wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
-{
- struct mf_bitmap wc = features->match;
- bitmap_not(wc.bm, MFF_N_IDS);
- bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
- return wc;
-}
-
-struct ofp10_wc_map {
- enum ofp10_flow_wildcards wc10;
- enum mf_field_id mf;
-};
-
-static const struct ofp10_wc_map ofp10_wc_map[] = {
- { OFPFW10_IN_PORT, MFF_IN_PORT },
- { OFPFW10_DL_VLAN, MFF_VLAN_VID },
- { OFPFW10_DL_SRC, MFF_ETH_SRC },
- { OFPFW10_DL_DST, MFF_ETH_DST},
- { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
- { OFPFW10_NW_PROTO, MFF_IP_PROTO },
- { OFPFW10_TP_SRC, MFF_TCP_SRC },
- { OFPFW10_TP_DST, MFF_TCP_DST },
- { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
- { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
- { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
- { OFPFW10_NW_TOS, MFF_IP_DSCP },
-};
-
-static ovs_be32
-mf_bitmap_to_of10(const struct mf_bitmap *fields)
-{
- const struct ofp10_wc_map *p;
- uint32_t wc10 = 0;
-
- for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
- if (bitmap_is_set(fields->bm, p->mf)) {
- wc10 |= p->wc10;
- }
- }
- return htonl(wc10);
-}
-
-static struct mf_bitmap
-mf_bitmap_from_of10(ovs_be32 wc10_)
-{
- struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
- const struct ofp10_wc_map *p;
- uint32_t wc10 = ntohl(wc10_);
-
- for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
- if (wc10 & p->wc10) {
- bitmap_set1(fields.bm, p->mf);
- }
- }
- return fields;
-}
-
-static void
-ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
- const struct ofputil_table_features *features,
- struct ofpbuf *buf)
-{
- struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
- struct ofp10_table_stats *out;
-
- out = ofpbuf_put_zeros(buf, sizeof *out);
- out->table_id = features->table_id;
- ovs_strlcpy(out->name, features->name, sizeof out->name);
- out->wildcards = mf_bitmap_to_of10(&wc);
- out->max_entries = htonl(features->max_entries);
- out->active_count = htonl(stats->active_count);
- put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
- put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
-}
-
-struct ofp11_wc_map {
- enum ofp11_flow_match_fields wc11;
- enum mf_field_id mf;
-};
-
-static const struct ofp11_wc_map ofp11_wc_map[] = {
- { OFPFMF11_IN_PORT, MFF_IN_PORT },
- { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
- { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
- { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
- { OFPFMF11_NW_TOS, MFF_IP_DSCP },
- { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
- { OFPFMF11_TP_SRC, MFF_TCP_SRC },
- { OFPFMF11_TP_DST, MFF_TCP_DST },
- { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
- { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
- /* I don't know what OFPFMF11_TYPE means. */
- { OFPFMF11_DL_SRC, MFF_ETH_SRC },
- { OFPFMF11_DL_DST, MFF_ETH_DST },
- { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
- { OFPFMF11_NW_DST, MFF_IPV4_DST },
- { OFPFMF11_METADATA, MFF_METADATA },
-};
-
-static ovs_be32
-mf_bitmap_to_of11(const struct mf_bitmap *fields)
-{
- const struct ofp11_wc_map *p;
- uint32_t wc11 = 0;
-
- for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
- if (bitmap_is_set(fields->bm, p->mf)) {
- wc11 |= p->wc11;
- }
- }
- return htonl(wc11);
-}
-
-static struct mf_bitmap
-mf_bitmap_from_of11(ovs_be32 wc11_)
-{
- struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
- const struct ofp11_wc_map *p;
- uint32_t wc11 = ntohl(wc11_);
-
- for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
- if (wc11 & p->wc11) {
- bitmap_set1(fields.bm, p->mf);
- }
- }
- return fields;
-}
-
-static void
-ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
- const struct ofputil_table_features *features,
- struct ofpbuf *buf)
-{
- struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
- struct ofp11_table_stats *out;
-
- out = ofpbuf_put_zeros(buf, sizeof *out);
- out->table_id = features->table_id;
- ovs_strlcpy(out->name, features->name, sizeof out->name);
- out->wildcards = mf_bitmap_to_of11(&wc);
- out->match = mf_bitmap_to_of11(&features->match);
- out->instructions = ovsinst_bitmap_to_openflow(
- features->nonmiss.instructions, OFP11_VERSION);
- out->write_actions = ofpact_bitmap_to_openflow(
- features->nonmiss.write.ofpacts, OFP11_VERSION);
- out->apply_actions = ofpact_bitmap_to_openflow(
- features->nonmiss.apply.ofpacts, OFP11_VERSION);
- out->config = htonl(features->miss_config);
- out->max_entries = htonl(features->max_entries);
- out->active_count = htonl(stats->active_count);
- out->lookup_count = htonll(stats->lookup_count);
- out->matched_count = htonll(stats->matched_count);
-}
-
-static void
-ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
- const struct ofputil_table_features *features,
- struct ofpbuf *buf)
-{
- struct ofp12_table_stats *out;
-
- out = ofpbuf_put_zeros(buf, sizeof *out);
- out->table_id = features->table_id;
- ovs_strlcpy(out->name, features->name, sizeof out->name);
- out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
- out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
- OFP12_VERSION);
- out->write_actions = ofpact_bitmap_to_openflow(
- features->nonmiss.write.ofpacts, OFP12_VERSION);
- out->apply_actions = ofpact_bitmap_to_openflow(
- features->nonmiss.apply.ofpacts, OFP12_VERSION);
- out->write_setfields = oxm_bitmap_from_mf_bitmap(
- &features->nonmiss.write.set_fields, OFP12_VERSION);
- out->apply_setfields = oxm_bitmap_from_mf_bitmap(
- &features->nonmiss.apply.set_fields, OFP12_VERSION);
- out->metadata_match = features->metadata_match;
- out->metadata_write = features->metadata_write;
- out->instructions = ovsinst_bitmap_to_openflow(
- features->nonmiss.instructions, OFP12_VERSION);
- out->config = ofputil_encode_table_config(features->miss_config,
- OFPUTIL_TABLE_EVICTION_DEFAULT,
- OFPUTIL_TABLE_VACANCY_DEFAULT,
- OFP12_VERSION);
- out->max_entries = htonl(features->max_entries);
- out->active_count = htonl(stats->active_count);
- out->lookup_count = htonll(stats->lookup_count);
- out->matched_count = htonll(stats->matched_count);
-}
-
-static void
-ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
- struct ofpbuf *buf)
-{
- struct ofp13_table_stats *out;
-
- out = ofpbuf_put_zeros(buf, sizeof *out);
- out->table_id = stats->table_id;
- out->active_count = htonl(stats->active_count);
- out->lookup_count = htonll(stats->lookup_count);
- out->matched_count = htonll(stats->matched_count);
-}
-
-struct ofpbuf *
-ofputil_encode_table_stats_reply(const struct ofp_header *request)
-{
- return ofpraw_alloc_stats_reply(request, 0);
-}
-
-void
-ofputil_append_table_stats_reply(struct ofpbuf *reply,
- const struct ofputil_table_stats *stats,
- const struct ofputil_table_features *features)
-{
- struct ofp_header *oh = reply->header;
-
- ovs_assert(stats->table_id == features->table_id);
-
- switch ((enum ofp_version) oh->version) {
- case OFP10_VERSION:
- ofputil_put_ofp10_table_stats(stats, features, reply);
- break;
-
- case OFP11_VERSION:
- ofputil_put_ofp11_table_stats(stats, features, reply);
- break;
-
- case OFP12_VERSION:
- ofputil_put_ofp12_table_stats(stats, features, reply);
- break;
-
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- ofputil_put_ofp13_table_stats(stats, reply);
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-static int
-ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
- struct ofputil_table_stats *stats,
- struct ofputil_table_features *features)
-{
- struct ofp10_table_stats *ots;
-
- ots = ofpbuf_try_pull(msg, sizeof *ots);
- if (!ots) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- features->table_id = ots->table_id;
- ovs_strlcpy(features->name, ots->name, sizeof features->name);
- features->max_entries = ntohl(ots->max_entries);
- features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
-
- stats->table_id = ots->table_id;
- stats->active_count = ntohl(ots->active_count);
- stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
- stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
-
- return 0;
-}
-
-static int
-ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
- struct ofputil_table_stats *stats,
- struct ofputil_table_features *features)
-{
- struct ofp11_table_stats *ots;
-
- ots = ofpbuf_try_pull(msg, sizeof *ots);
- if (!ots) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- features->table_id = ots->table_id;
- ovs_strlcpy(features->name, ots->name, sizeof features->name);
- features->max_entries = ntohl(ots->max_entries);
- features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
- ots->instructions, OFP11_VERSION);
- features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
- ots->write_actions, OFP11_VERSION);
- features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
- ots->write_actions, OFP11_VERSION);
- features->miss = features->nonmiss;
- features->miss_config = ofputil_decode_table_miss(ots->config,
- OFP11_VERSION);
- features->match = mf_bitmap_from_of11(ots->match);
- features->wildcard = mf_bitmap_from_of11(ots->wildcards);
- bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
-
- stats->table_id = ots->table_id;
- stats->active_count = ntohl(ots->active_count);
- stats->lookup_count = ntohll(ots->lookup_count);
- stats->matched_count = ntohll(ots->matched_count);
-
- return 0;
-}
-
-static int
-ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
- struct ofputil_table_stats *stats,
- struct ofputil_table_features *features)
-{
- struct ofp12_table_stats *ots;
-
- ots = ofpbuf_try_pull(msg, sizeof *ots);
- if (!ots) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- features->table_id = ots->table_id;
- ovs_strlcpy(features->name, ots->name, sizeof features->name);
- features->metadata_match = ots->metadata_match;
- features->metadata_write = ots->metadata_write;
- features->miss_config = ofputil_decode_table_miss(ots->config,
- OFP12_VERSION);
- features->max_entries = ntohl(ots->max_entries);
-
- features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
- ots->instructions, OFP12_VERSION);
- features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
- ots->write_actions, OFP12_VERSION);
- features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
- ots->apply_actions, OFP12_VERSION);
- features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
- ots->write_setfields, OFP12_VERSION);
- features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
- ots->apply_setfields, OFP12_VERSION);
- features->miss = features->nonmiss;
-
- features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
- features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
- OFP12_VERSION);
- bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
-
- stats->table_id = ots->table_id;
- stats->active_count = ntohl(ots->active_count);
- stats->lookup_count = ntohll(ots->lookup_count);
- stats->matched_count = ntohll(ots->matched_count);
-
- return 0;
-}
-
-static int
-ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
- struct ofputil_table_stats *stats,
- struct ofputil_table_features *features)
-{
- struct ofp13_table_stats *ots;
-
- ots = ofpbuf_try_pull(msg, sizeof *ots);
- if (!ots) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- features->table_id = ots->table_id;
-
- stats->table_id = ots->table_id;
- stats->active_count = ntohl(ots->active_count);
- stats->lookup_count = ntohll(ots->lookup_count);
- stats->matched_count = ntohll(ots->matched_count);
-
- return 0;
-}
-
-int
-ofputil_decode_table_stats_reply(struct ofpbuf *msg,
- struct ofputil_table_stats *stats,
- struct ofputil_table_features *features)
-{
- const struct ofp_header *oh;
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
- oh = msg->header;
-
- if (!msg->size) {
- return EOF;
- }
-
- memset(stats, 0, sizeof *stats);
- memset(features, 0, sizeof *features);
- features->supports_eviction = -1;
- features->supports_vacancy_events = -1;
-
- switch ((enum ofp_version) oh->version) {
- case OFP10_VERSION:
- return ofputil_decode_ofp10_table_stats(msg, stats, features);
-
- case OFP11_VERSION:
- return ofputil_decode_ofp11_table_stats(msg, stats, features);
-
- case OFP12_VERSION:
- return ofputil_decode_ofp12_table_stats(msg, stats, features);
-
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- return ofputil_decode_ofp13_table_stats(msg, stats, features);
-
- default:
- OVS_NOT_REACHED();
- }
-}
-\f
-/* ofputil_flow_monitor_request */
-
-/* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
- * ofputil_flow_monitor_request in 'rq'.
- *
- * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
- * message. Calling this function multiple times for a single 'msg' iterates
- * through the requests. The caller must initially leave 'msg''s layer
- * pointers null and not modify them between calls.
- *
- * Returns 0 if successful, EOF if no requests were left in this 'msg',
- * otherwise an OFPERR_* value. */
-int
-ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
- struct ofpbuf *msg)
-{
- struct nx_flow_monitor_request *nfmr;
- uint16_t flags;
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
- if (!nfmr) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
- "leftover bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- flags = ntohs(nfmr->flags);
- if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
- || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
- | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
- flags);
- return OFPERR_OFPMOFC_BAD_FLAGS;
- }
-
- if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
- return OFPERR_NXBRC_MUST_BE_ZERO;
- }
-
- rq->id = ntohl(nfmr->id);
- rq->flags = flags;
- rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
- rq->table_id = nfmr->table_id;
-
- return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
-}
-
-void
-ofputil_append_flow_monitor_request(
- const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
-{
- struct nx_flow_monitor_request *nfmr;
- size_t start_ofs;
- int match_len;
-
- if (!msg->size) {
- ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
- }
-
- start_ofs = msg->size;
- ofpbuf_put_zeros(msg, sizeof *nfmr);
- 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);
- nfmr->flags = htons(rq->flags);
- nfmr->out_port = htons(ofp_to_u16(rq->out_port));
- nfmr->match_len = htons(match_len);
- nfmr->table_id = rq->table_id;
-}
-
-/* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
- * into an abstract ofputil_flow_update in 'update'. The caller must have
- * initialized update->match to point to space allocated for a match.
- *
- * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
- * actions (except for NXFME_ABBREV, which never includes actions). The caller
- * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
- * will point into the 'ofpacts' buffer.
- *
- * Multiple flow updates can be packed into a single OpenFlow message. Calling
- * this function multiple times for a single 'msg' iterates through the
- * updates. The caller must initially leave 'msg''s layer pointers null and
- * not modify them between calls.
- *
- * Returns 0 if successful, EOF if no updates were left in this 'msg',
- * otherwise an OFPERR_* value. */
-int
-ofputil_decode_flow_update(struct ofputil_flow_update *update,
- struct ofpbuf *msg, struct ofpbuf *ofpacts)
-{
- struct nx_flow_update_header *nfuh;
- unsigned int length;
- struct ofp_header *oh;
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- ofpbuf_clear(ofpacts);
- if (!msg->size) {
- return EOF;
- }
-
- if (msg->size < sizeof(struct nx_flow_update_header)) {
- goto bad_len;
- }
-
- oh = msg->header;
-
- nfuh = msg->data;
- update->event = ntohs(nfuh->event);
- length = ntohs(nfuh->length);
- if (length > msg->size || length % 8) {
- goto bad_len;
- }
-
- if (update->event == NXFME_ABBREV) {
- struct nx_flow_update_abbrev *nfua;
-
- if (length != sizeof *nfua) {
- goto bad_len;
- }
-
- nfua = ofpbuf_pull(msg, sizeof *nfua);
- update->xid = nfua->xid;
- return 0;
- } else if (update->event == NXFME_ADDED
- || update->event == NXFME_DELETED
- || update->event == NXFME_MODIFIED) {
- struct nx_flow_update_full *nfuf;
- unsigned int actions_len;
- unsigned int match_len;
- enum ofperr error;
-
- if (length < sizeof *nfuf) {
- goto bad_len;
- }
-
- nfuf = ofpbuf_pull(msg, sizeof *nfuf);
- match_len = ntohs(nfuf->match_len);
- if (sizeof *nfuf + match_len > length) {
- goto bad_len;
- }
-
- update->reason = ntohs(nfuf->reason);
- update->idle_timeout = ntohs(nfuf->idle_timeout);
- update->hard_timeout = ntohs(nfuf->hard_timeout);
- update->table_id = nfuf->table_id;
- update->cookie = nfuf->cookie;
- update->priority = ntohs(nfuf->priority);
-
- error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
- if (error) {
- return error;
- }
-
- actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
- error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
- ofpacts);
- if (error) {
- return error;
- }
-
- update->ofpacts = ofpacts->data;
- update->ofpacts_len = ofpacts->size;
- return 0;
- } else {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
- ntohs(nfuh->event));
- return OFPERR_NXBRC_FM_BAD_EVENT;
- }
-
-bad_len:
- VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
- "leftover bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
-}
-
-uint32_t
-ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
-{
- const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
-
- return ntohl(cancel->id);
-}
-
-struct ofpbuf *
-ofputil_encode_flow_monitor_cancel(uint32_t id)
-{
- struct nx_flow_monitor_cancel *nfmc;
- struct ofpbuf *msg;
-
- msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
- nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
- nfmc->id = htonl(id);
- return msg;
-}
-
-void
-ofputil_start_flow_update(struct ovs_list *replies)
-{
- struct ofpbuf *msg;
-
- msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
- htonl(0), 1024);
-
- ovs_list_init(replies);
- ovs_list_push_back(replies, &msg->list_node);
-}
-
-void
-ofputil_append_flow_update(const struct ofputil_flow_update *update,
- struct ovs_list *replies)
-{
- enum ofp_version version = ofpmp_version(replies);
- struct nx_flow_update_header *nfuh;
- struct ofpbuf *msg;
- size_t start_ofs;
-
- msg = ofpbuf_from_list(ovs_list_back(replies));
- start_ofs = msg->size;
-
- if (update->event == NXFME_ABBREV) {
- struct nx_flow_update_abbrev *nfua;
-
- nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
- nfua->xid = update->xid;
- } else {
- struct nx_flow_update_full *nfuf;
- int match_len;
-
- ofpbuf_put_zeros(msg, sizeof *nfuf);
- match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
- ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
- version);
- nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
- nfuf->reason = htons(update->reason);
- nfuf->priority = htons(update->priority);
- nfuf->idle_timeout = htons(update->idle_timeout);
- nfuf->hard_timeout = htons(update->hard_timeout);
- nfuf->match_len = htons(match_len);
- nfuf->table_id = update->table_id;
- nfuf->cookie = update->cookie;
- }
-
- nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
- nfuh->length = htons(msg->size - start_ofs);
- nfuh->event = htons(update->event);
-
- ofpmp_postappend(replies, start_ofs);
-}
-\f
-struct ofpbuf *
-ofputil_encode_packet_out(const struct ofputil_packet_out *po,
- enum ofputil_protocol protocol)
-{
- enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
- struct ofpbuf *msg;
- size_t size;
-
- size = po->ofpacts_len;
- if (po->buffer_id == UINT32_MAX) {
- size += po->packet_len;
- }
-
- switch (ofp_version) {
- case OFP10_VERSION: {
- struct ofp10_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_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
- ofp_version);
-
- opo = msg->msg;
- opo->buffer_id = htonl(po->buffer_id);
- opo->in_port = htons(ofp_to_u16(po->in_port));
- opo->actions_len = htons(msg->size - actions_ofs);
- break;
- }
-
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp11_packet_out *opo;
- size_t len;
-
- msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
- ofpbuf_put_zeros(msg, sizeof *opo);
- len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
- ofp_version);
- opo = msg->msg;
- opo->buffer_id = htonl(po->buffer_id);
- opo->in_port = ofputil_port_to_ofp11(po->in_port);
- opo->actions_len = htons(len);
- break;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-
- if (po->buffer_id == UINT32_MAX) {
- ofpbuf_put(msg, po->packet, po->packet_len);
- }
-
- ofpmsg_update_length(msg);
-
- return msg;
-}
-\f
-/* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
-struct ofpbuf *
-make_echo_request(enum ofp_version ofp_version)
-{
- return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
- htonl(0), 0);
-}
-
-/* Creates and returns an OFPT_ECHO_REPLY message matching the
- * OFPT_ECHO_REQUEST message in 'rq'. */
-struct ofpbuf *
-make_echo_reply(const struct ofp_header *rq)
-{
- struct ofpbuf rq_buf = ofpbuf_const_initializer(rq, ntohs(rq->length));
- ofpraw_pull_assert(&rq_buf);
-
- struct ofpbuf *reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY,
- rq, rq_buf.size);
- ofpbuf_put(reply, rq_buf.data, rq_buf.size);
- return reply;
-}
-
-struct ofpbuf *
-ofputil_encode_barrier_request(enum ofp_version ofp_version)
-{
- enum ofpraw type;
-
- switch (ofp_version) {
- case OFP15_VERSION:
- case OFP14_VERSION:
- case OFP13_VERSION:
- case OFP12_VERSION:
- case OFP11_VERSION:
- type = OFPRAW_OFPT11_BARRIER_REQUEST;
- break;
-
- case OFP10_VERSION:
- type = OFPRAW_OFPT10_BARRIER_REQUEST;
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-
- return ofpraw_alloc(type, ofp_version, 0);
-}
-
-const char *
-ofputil_frag_handling_to_string(enum ofputil_frag_handling frag)
-{
- switch (frag) {
- case OFPUTIL_FRAG_NORMAL: return "normal";
- case OFPUTIL_FRAG_DROP: return "drop";
- case OFPUTIL_FRAG_REASM: return "reassemble";
- case OFPUTIL_FRAG_NX_MATCH: return "nx-match";
- }
-
- OVS_NOT_REACHED();
-}
-
-bool
-ofputil_frag_handling_from_string(const char *s,
- enum ofputil_frag_handling *frag)
-{
- if (!strcasecmp(s, "normal")) {
- *frag = OFPUTIL_FRAG_NORMAL;
- } else if (!strcasecmp(s, "drop")) {
- *frag = OFPUTIL_FRAG_DROP;
- } else if (!strcasecmp(s, "reassemble")) {
- *frag = OFPUTIL_FRAG_REASM;
- } else if (!strcasecmp(s, "nx-match")) {
- *frag = OFPUTIL_FRAG_NX_MATCH;
- } else {
- return false;
- }
- return true;
-}
-
-/* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
- * port number and stores the latter in '*ofp10_port', for the purpose of
- * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
- * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
- *
- * See the definition of OFP11_MAX for an explanation of the mapping. */
-enum ofperr
-ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
-{
- uint32_t ofp11_port_h = ntohl(ofp11_port);
-
- if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
- *ofp10_port = u16_to_ofp(ofp11_port_h);
- return 0;
- } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
- *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
- return 0;
- } else {
- *ofp10_port = OFPP_NONE;
- VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
- "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
- ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
- ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
- return OFPERR_OFPBAC_BAD_OUT_PORT;
- }
-}
-
-/* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
- * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
- *
- * See the definition of OFP11_MAX for an explanation of the mapping. */
-ovs_be32
-ofputil_port_to_ofp11(ofp_port_t ofp10_port)
-{
- return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
- ? ofp_to_u16(ofp10_port)
- : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
-}
-
-#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(ANY) \
- OFPUTIL_NAMED_PORT(UNSET)
-
-/* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
-#define OFPUTIL_NAMED_PORTS_WITH_NONE \
- OFPUTIL_NAMED_PORTS \
- OFPUTIL_NAMED_PORT(NONE)
-
-/* Stores the port number represented by 's' into '*portp'. 's' may be an
- * integer or, for reserved ports, the standard OpenFlow name for the port
- * (e.g. "LOCAL").
- *
- * Returns true if successful, false if 's' is not a valid OpenFlow port number
- * or name. The caller should issue an error message in this case, because
- * this function usually does not. (This gives the caller an opportunity to
- * look up the port name another way, e.g. by contacting the switch and listing
- * the names of all its ports).
- *
- * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
- * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
- * range as described in include/openflow/openflow-1.1.h. */
-bool
-ofputil_port_from_string(const char *s, ofp_port_t *portp)
-{
- unsigned int port32; /* int is at least 32 bits wide. */
-
- if (*s == '-') {
- VLOG_WARN("Negative value %s is not a valid port number.", s);
- return false;
- }
- *portp = 0;
- if (str_to_uint(s, 10, &port32)) {
- if (port32 < ofp_to_u16(OFPP_MAX)) {
- /* Pass. */
- } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
- VLOG_WARN("port %u is a reserved OF1.0 port number that will "
- "be translated to %u when talking to an OF1.1 or "
- "later controller", port32, port32 + OFPP11_OFFSET);
- } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
- char name[OFP_MAX_PORT_NAME_LEN];
-
- ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
- VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
- "for compatibility with OpenFlow 1.1 and later",
- name, port32);
- } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
- VLOG_WARN("port %u is outside the supported range 0 through "
- "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
- UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
- return false;
- } else {
- port32 -= OFPP11_OFFSET;
- }
-
- *portp = u16_to_ofp(port32);
- return true;
- } else {
- struct pair {
- const char *name;
- ofp_port_t value;
- };
- static const struct pair pairs[] = {
-#define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
- OFPUTIL_NAMED_PORTS_WITH_NONE
-#undef OFPUTIL_NAMED_PORT
- };
- const struct pair *p;
-
- for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
- if (!strcasecmp(s, p->name)) {
- *portp = p->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(ofp_port_t port, struct ds *s)
-{
- char name[OFP_MAX_PORT_NAME_LEN];
-
- ofputil_port_to_string(port, name, sizeof name);
- ds_put_cstr(s, name);
-}
-
-/* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
- * representation of OpenFlow port number 'port'. Most ports are represented
- * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
- * by name, e.g. "LOCAL". */
-void
-ofputil_port_to_string(ofp_port_t port,
- char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
-{
- switch (port) {
-#define OFPUTIL_NAMED_PORT(NAME) \
- case OFPP_##NAME: \
- ovs_strlcpy(namebuf, #NAME, bufsize); \
- break;
- OFPUTIL_NAMED_PORTS
-#undef OFPUTIL_NAMED_PORT
-
- default:
- snprintf(namebuf, bufsize, "%"PRIu16, port);
- break;
- }
-}
-
-/* Stores the group id represented by 's' into '*group_idp'. 's' may be an
- * integer or, for reserved group IDs, the standard OpenFlow name for the group
- * (either "ANY" or "ALL").
- *
- * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
- * name. */
-bool
-ofputil_group_from_string(const char *s, uint32_t *group_idp)
-{
- if (!strcasecmp(s, "any")) {
- *group_idp = OFPG_ANY;
- } else if (!strcasecmp(s, "all")) {
- *group_idp = OFPG_ALL;
- } else if (!str_to_uint(s, 10, group_idp)) {
- VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
- "32-bit nonnegative integers or the keywords ANY or "
- "ALL.)", s);
- return false;
- }
-
- return true;
-}
-
-/* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
- * Most groups' string representation is just the number, but for special
- * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
-void
-ofputil_format_group(uint32_t group_id, struct ds *s)
-{
- char name[MAX_GROUP_NAME_LEN];
-
- ofputil_group_to_string(group_id, name, sizeof name);
- ds_put_cstr(s, name);
-}
-
-
-/* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
- * representation of OpenFlow group ID 'group_id'. Most group are represented
- * as just their number, but special groups, e.g. OFPG_ALL, are represented
- * by name, e.g. "ALL". */
-void
-ofputil_group_to_string(uint32_t group_id,
- char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
-{
- switch (group_id) {
- case OFPG_ALL:
- ovs_strlcpy(namebuf, "ALL", bufsize);
- break;
-
- case OFPG_ANY:
- ovs_strlcpy(namebuf, "ANY", bufsize);
- break;
-
- default:
- snprintf(namebuf, bufsize, "%"PRIu32, group_id);
- break;
- }
-}
-
-/* Given a buffer 'b' that contains an array of OpenFlow ports of type
- * 'ofp_version', tries to pull the first element from the array. If
- * successful, initializes '*pp' with an abstract representation of the
- * 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(enum ofp_version ofp_version, struct ofpbuf *b,
- struct ofputil_phy_port *pp)
-{
- memset(pp, 0, sizeof *pp);
-
- 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;
- }
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION: {
- const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
- return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
- }
- case OFP14_VERSION:
- case OFP15_VERSION:
- return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
- default:
- OVS_NOT_REACHED();
- }
-}
-
-static void
-ofputil_normalize_match__(struct match *match, bool may_log)
-{
- enum {
- 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_IPVx = 1 << 3, /* tos, frag, ttl */
- MAY_ARP_SHA = 1 << 4, /* arp_sha */
- MAY_ARP_THA = 1 << 5, /* arp_tha */
- MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
- MAY_ND_TARGET = 1 << 7, /* nd_target */
- MAY_MPLS = 1 << 8, /* mpls label and tc */
- } may_match;
-
- struct flow_wildcards wc;
-
- /* Figure out what fields may be matched. */
- if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
- may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
- if (match->flow.nw_proto == IPPROTO_TCP ||
- match->flow.nw_proto == IPPROTO_UDP ||
- match->flow.nw_proto == IPPROTO_SCTP ||
- match->flow.nw_proto == IPPROTO_ICMP) {
- may_match |= MAY_TP_ADDR;
- }
- } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
- may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
- if (match->flow.nw_proto == IPPROTO_TCP ||
- match->flow.nw_proto == IPPROTO_UDP ||
- match->flow.nw_proto == IPPROTO_SCTP) {
- may_match |= MAY_TP_ADDR;
- } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
- may_match |= MAY_TP_ADDR;
- if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
- may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
- } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
- may_match |= MAY_ND_TARGET | MAY_ARP_THA;
- }
- }
- } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
- match->flow.dl_type == htons(ETH_TYPE_RARP)) {
- may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
- } else if (eth_type_mpls(match->flow.dl_type)) {
- may_match = MAY_MPLS;
- } else {
- may_match = 0;
- }
-
- /* Clear the fields that may not be matched. */
- wc = match->wc;
- if (!(may_match & MAY_NW_ADDR)) {
- wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
- }
- if (!(may_match & MAY_TP_ADDR)) {
- wc.masks.tp_src = wc.masks.tp_dst = htons(0);
- }
- if (!(may_match & MAY_NW_PROTO)) {
- wc.masks.nw_proto = 0;
- }
- if (!(may_match & MAY_IPVx)) {
- wc.masks.nw_tos = 0;
- wc.masks.nw_ttl = 0;
- }
- if (!(may_match & MAY_ARP_SHA)) {
- WC_UNMASK_FIELD(&wc, arp_sha);
- }
- if (!(may_match & MAY_ARP_THA)) {
- WC_UNMASK_FIELD(&wc, arp_tha);
- }
- if (!(may_match & MAY_IPV6)) {
- wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
- wc.masks.ipv6_label = htonl(0);
- }
- if (!(may_match & MAY_ND_TARGET)) {
- wc.masks.nd_target = in6addr_any;
- }
- if (!(may_match & MAY_MPLS)) {
- memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
- }
-
- /* Log any changes. */
- if (!flow_wildcards_equal(&wc, &match->wc)) {
- bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
- char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
-
- match->wc = wc;
- match_zero_wildcarded_fields(match);
-
- if (log) {
- char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
- VLOG_INFO("normalization changed ofp_match, details:");
- VLOG_INFO(" pre: %s", pre);
- VLOG_INFO("post: %s", post);
- free(pre);
- free(post);
- }
- }
-}
-
-/* "Normalizes" the wildcards in 'match'. 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 'match' 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 'match' 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 'match' specifies an
- * SCTP flow.
- *
- * If this function changes 'match', it logs a rate-limited informational
- * message. */
-void
-ofputil_normalize_match(struct match *match)
-{
- ofputil_normalize_match__(match, true);
-}
-
-/* Same as ofputil_normalize_match() without the logging. Thus, this function
- * is suitable for a program's internal use, whereas ofputil_normalize_match()
- * 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_match_quiet(struct match *match)
-{
- ofputil_normalize_match__(match, false);
-}
-
-/* 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':
- level = 0;
- break;
-
- 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;
-}
-
-/* Encode a dump ports request for 'port', the encoded message
- * will be for OpenFlow version 'ofp_version'. Returns message
- * as a struct ofpbuf. Returns encoded message on success, NULL on error */
-struct ofpbuf *
-ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
-{
- struct ofpbuf *request;
-
- switch (ofp_version) {
- case OFP10_VERSION: {
- struct ofp10_port_stats_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- req->port_no = htons(ofp_to_u16(port));
- break;
- }
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp11_port_stats_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- req->port_no = ofputil_port_to_ofp11(port);
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-static void
-ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
- struct ofp10_port_stats *ps10)
-{
- ps10->port_no = htons(ofp_to_u16(ops->port_no));
- memset(ps10->pad, 0, sizeof ps10->pad);
- put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
- put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
- put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
- put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
- put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
- put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
- put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
- put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
- put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
- put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
- put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
- put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
-}
-
-static void
-ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
- struct ofp11_port_stats *ps11)
-{
- ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
- memset(ps11->pad, 0, sizeof ps11->pad);
- ps11->rx_packets = htonll(ops->stats.rx_packets);
- ps11->tx_packets = htonll(ops->stats.tx_packets);
- ps11->rx_bytes = htonll(ops->stats.rx_bytes);
- ps11->tx_bytes = htonll(ops->stats.tx_bytes);
- ps11->rx_dropped = htonll(ops->stats.rx_dropped);
- ps11->tx_dropped = htonll(ops->stats.tx_dropped);
- ps11->rx_errors = htonll(ops->stats.rx_errors);
- ps11->tx_errors = htonll(ops->stats.tx_errors);
- ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
- ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
- ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
- ps11->collisions = htonll(ops->stats.collisions);
-}
-
-static void
-ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
- struct ofp13_port_stats *ps13)
-{
- ofputil_port_stats_to_ofp11(ops, &ps13->ps);
- ps13->duration_sec = htonl(ops->duration_sec);
- ps13->duration_nsec = htonl(ops->duration_nsec);
-}
-
-static void
-ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
- struct ovs_list *replies)
-{
- struct ofp14_port_stats_prop_ethernet *eth;
- struct ofp14_port_stats *ps14;
- struct ofpbuf *reply;
-
- reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
-
- ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
- ps14->length = htons(sizeof *ps14 + sizeof *eth);
- memset(ps14->pad, 0, sizeof ps14->pad);
- ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
- ps14->duration_sec = htonl(ops->duration_sec);
- ps14->duration_nsec = htonl(ops->duration_nsec);
- ps14->rx_packets = htonll(ops->stats.rx_packets);
- ps14->tx_packets = htonll(ops->stats.tx_packets);
- ps14->rx_bytes = htonll(ops->stats.rx_bytes);
- ps14->tx_bytes = htonll(ops->stats.tx_bytes);
- ps14->rx_dropped = htonll(ops->stats.rx_dropped);
- ps14->tx_dropped = htonll(ops->stats.tx_dropped);
- ps14->rx_errors = htonll(ops->stats.rx_errors);
- ps14->tx_errors = htonll(ops->stats.tx_errors);
-
- eth = ofpprop_put_zeros(reply, OFPPSPT14_ETHERNET, sizeof *eth);
- eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
- eth->rx_over_err = htonll(ops->stats.rx_over_errors);
- eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
- eth->collisions = htonll(ops->stats.collisions);
-}
-
-/* Encode a ports stat for 'ops' and append it to 'replies'. */
-void
-ofputil_append_port_stat(struct ovs_list *replies,
- const struct ofputil_port_stats *ops)
-{
- switch (ofpmp_version(replies)) {
- case OFP13_VERSION: {
- struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_port_stats_to_ofp13(ops, reply);
- break;
- }
- case OFP12_VERSION:
- case OFP11_VERSION: {
- struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_port_stats_to_ofp11(ops, reply);
- break;
- }
-
- case OFP10_VERSION: {
- struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_port_stats_to_ofp10(ops, reply);
- break;
- }
-
- case OFP14_VERSION:
- case OFP15_VERSION:
- ofputil_append_ofp14_port_stats(ops, replies);
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-static enum ofperr
-ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
- const struct ofp10_port_stats *ps10)
-{
- memset(ops, 0, sizeof *ops);
-
- ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
- ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
- ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
- ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
- ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
- ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
- ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
- ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
- ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
- ops->stats.rx_frame_errors =
- ntohll(get_32aligned_be64(&ps10->rx_frame_err));
- ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
- ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
- ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
- ops->duration_sec = ops->duration_nsec = UINT32_MAX;
-
- return 0;
-}
-
-static enum ofperr
-ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
- const struct ofp11_port_stats *ps11)
-{
- enum ofperr error;
-
- memset(ops, 0, sizeof *ops);
- error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
- if (error) {
- return error;
- }
-
- ops->stats.rx_packets = ntohll(ps11->rx_packets);
- ops->stats.tx_packets = ntohll(ps11->tx_packets);
- ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
- ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
- ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
- ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
- ops->stats.rx_errors = ntohll(ps11->rx_errors);
- ops->stats.tx_errors = ntohll(ps11->tx_errors);
- ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
- ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
- ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
- ops->stats.collisions = ntohll(ps11->collisions);
- ops->duration_sec = ops->duration_nsec = UINT32_MAX;
-
- return 0;
-}
-
-static enum ofperr
-ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
- const struct ofp13_port_stats *ps13)
-{
- enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
- if (!error) {
- ops->duration_sec = ntohl(ps13->duration_sec);
- ops->duration_nsec = ntohl(ps13->duration_nsec);
- }
- return error;
-}
-
-static enum ofperr
-parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
- struct ofputil_port_stats *ops)
-{
- const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
-
- if (payload->size != sizeof *eth) {
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
- ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
- ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
- ops->stats.collisions = ntohll(eth->collisions);
-
- return 0;
-}
-
-static enum ofperr
-ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
- struct ofpbuf *msg)
-{
- const struct ofp14_port_stats *ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
- if (!ps14) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- size_t len = ntohs(ps14->length);
- if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- len -= sizeof *ps14;
-
- enum ofperr error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
- if (error) {
- return error;
- }
-
- ops->duration_sec = ntohl(ps14->duration_sec);
- ops->duration_nsec = ntohl(ps14->duration_nsec);
- ops->stats.rx_packets = ntohll(ps14->rx_packets);
- ops->stats.tx_packets = ntohll(ps14->tx_packets);
- ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
- ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
- ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
- ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
- ops->stats.rx_errors = ntohll(ps14->rx_errors);
- ops->stats.tx_errors = ntohll(ps14->tx_errors);
- ops->stats.rx_frame_errors = UINT64_MAX;
- ops->stats.rx_over_errors = UINT64_MAX;
- ops->stats.rx_crc_errors = UINT64_MAX;
- ops->stats.collisions = UINT64_MAX;
-
- struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
- len);
- while (properties.size > 0) {
- struct ofpbuf payload;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPPSPT14_ETHERNET:
- error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(true, "port stats", type);
- break;
- }
-
- if (error) {
- return error;
- }
- }
-
- return 0;
-}
-
-/* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
- * message 'oh'. */
-size_t
-ofputil_count_port_stats(const struct ofp_header *oh)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&b);
-
- for (size_t n = 0; ; n++) {
- struct ofputil_port_stats ps;
- if (ofputil_decode_port_stats(&ps, &b)) {
- return n;
- }
- }
-}
-
-/* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
- * ofputil_port_stats in 'ps'.
- *
- * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
- * message. Calling this function multiple times for a single 'msg' iterates
- * through the replies. The caller must initially leave 'msg''s layer pointers
- * null and not modify them between calls.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
-{
- enum ofperr error;
- enum ofpraw raw;
-
- error = (msg->header ? ofpraw_decode(&raw, msg->header)
- : ofpraw_pull(&raw, msg));
- if (error) {
- return error;
- }
-
- if (!msg->size) {
- return EOF;
- } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
- return ofputil_pull_ofp14_port_stats(ps, msg);
- } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
- const struct ofp13_port_stats *ps13;
-
- ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
- if (!ps13) {
- goto bad_len;
- }
- return ofputil_port_stats_from_ofp13(ps, ps13);
- } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
- const struct ofp11_port_stats *ps11;
-
- ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
- if (!ps11) {
- goto bad_len;
- }
- return ofputil_port_stats_from_ofp11(ps, ps11);
- } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
- const struct ofp10_port_stats *ps10;
-
- ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
- if (!ps10) {
- goto bad_len;
- }
- return ofputil_port_stats_from_ofp10(ps, ps10);
- } else {
- OVS_NOT_REACHED();
- }
-
- bad_len:
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
- "bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
-}
-
-/* Parse a port status request message into a 16 bit OpenFlow 1.0
- * port number and stores the latter in '*ofp10_port'.
- * Returns 0 if successful, otherwise an OFPERR_* number. */
-enum ofperr
-ofputil_decode_port_stats_request(const struct ofp_header *request,
- ofp_port_t *ofp10_port)
-{
- switch ((enum ofp_version)request->version) {
- case OFP15_VERSION:
- case OFP14_VERSION:
- case OFP13_VERSION:
- case OFP12_VERSION:
- case OFP11_VERSION: {
- const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
- return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
- }
-
- case OFP10_VERSION: {
- const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
- *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
- return 0;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-/* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
-void
-ofputil_bucket_list_destroy(struct ovs_list *buckets)
-{
- struct ofputil_bucket *bucket;
-
- LIST_FOR_EACH_POP (bucket, list_node, buckets) {
- free(bucket->ofpacts);
- free(bucket);
- }
-}
-
-/* Clones 'bucket' and its ofpacts data */
-static struct ofputil_bucket *
-ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
-{
- struct ofputil_bucket *new;
-
- new = xmemdup(bucket, sizeof *bucket);
- new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
-
- return new;
-}
-
-/* Clones each of the buckets in the list 'src' appending them
- * in turn to 'dest' which should be an initialised list.
- * An exception is that if the pointer value of a bucket in 'src'
- * matches 'skip' then it is not cloned or appended to 'dest'.
- * This allows all of 'src' or 'all of 'src' except 'skip' to
- * be cloned and appended to 'dest'. */
-void
-ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
- const struct ofputil_bucket *skip)
-{
- struct ofputil_bucket *bucket;
-
- LIST_FOR_EACH (bucket, list_node, src) {
- struct ofputil_bucket *new_bucket;
-
- if (bucket == skip) {
- continue;
- }
-
- new_bucket = ofputil_bucket_clone_data(bucket);
- ovs_list_push_back(dest, &new_bucket->list_node);
- }
-}
-
-/* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
- * Returns the first bucket found or NULL if no buckets are found. */
-struct ofputil_bucket *
-ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
-{
- struct ofputil_bucket *bucket;
-
- if (bucket_id > OFPG15_BUCKET_MAX) {
- return NULL;
- }
-
- LIST_FOR_EACH (bucket, list_node, buckets) {
- if (bucket->bucket_id == bucket_id) {
- return bucket;
- }
- }
-
- return NULL;
-}
-
-/* Returns true if more than one bucket in the list 'buckets'
- * have the same bucket id. Returns false otherwise. */
-bool
-ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
-{
- struct ofputil_bucket *i, *j;
-
- LIST_FOR_EACH (i, list_node, buckets) {
- LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
- if (i == j) {
- break;
- }
- if (i->bucket_id == j->bucket_id) {
- return true;
- }
- }
- }
-
- return false;
-}
-
-/* Returns the bucket at the front of the list 'buckets'.
- * Undefined if 'buckets is empty. */
-struct ofputil_bucket *
-ofputil_bucket_list_front(const struct ovs_list *buckets)
-{
- static struct ofputil_bucket *bucket;
-
- ASSIGN_CONTAINER(bucket, ovs_list_front(buckets), list_node);
-
- return bucket;
-}
-
-/* Returns the bucket at the back of the list 'buckets'.
- * Undefined if 'buckets is empty. */
-struct ofputil_bucket *
-ofputil_bucket_list_back(const struct ovs_list *buckets)
-{
- static struct ofputil_bucket *bucket;
-
- ASSIGN_CONTAINER(bucket, ovs_list_back(buckets), list_node);
-
- return bucket;
-}
-
-/* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
- * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
- * for all groups.)
- *
- * Group statistics include packet and byte counts for each group. */
-struct ofpbuf *
-ofputil_encode_group_stats_request(enum ofp_version ofp_version,
- uint32_t group_id)
-{
- struct ofpbuf *request;
-
- switch (ofp_version) {
- case OFP10_VERSION:
- ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
- "(\'-O OpenFlow11\')");
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp11_group_stats_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- req->group_id = htonl(group_id);
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-void
-ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
-{
- ofputil_bucket_list_destroy(&gd->buckets);
- free(&gd->props.fields);
-}
-
-/* Decodes the OpenFlow group description request in 'oh', returning the group
- * whose description is requested, or OFPG_ALL if stats for all groups was
- * requested. */
-uint32_t
-ofputil_decode_group_desc_request(const struct ofp_header *oh)
-{
- struct ofpbuf request = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&request);
- if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
- return OFPG_ALL;
- } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
- ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
- return ntohl(*group_id);
- } else {
- OVS_NOT_REACHED();
- }
-}
-
-/* Returns an OpenFlow group description request for OpenFlow version
- * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
- * request stats for all groups (OpenFlow 1.4 and earlier always request all
- * groups).
- *
- * Group descriptions include the bucket and action configuration for each
- * group. */
-struct ofpbuf *
-ofputil_encode_group_desc_request(enum ofp_version ofp_version,
- uint32_t group_id)
-{
- struct ofpbuf *request;
-
- switch (ofp_version) {
- case OFP10_VERSION:
- ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
- "(\'-O OpenFlow11\')");
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
- ofp_version, 0);
- break;
- case OFP15_VERSION:{
- struct ofp15_group_desc_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
- ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- req->group_id = htonl(group_id);
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-static void
-ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
- struct ofp11_bucket_counter bucket_cnts[])
-{
- int i;
-
- for (i = 0; i < gs->n_buckets; i++) {
- bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
- bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
- }
-}
-
-static void
-ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
- struct ofp11_group_stats *gs11, size_t length,
- struct ofp11_bucket_counter bucket_cnts[])
-{
- memset(gs11, 0, sizeof *gs11);
- gs11->length = htons(length);
- gs11->group_id = htonl(gs->group_id);
- gs11->ref_count = htonl(gs->ref_count);
- gs11->packet_count = htonll(gs->packet_count);
- gs11->byte_count = htonll(gs->byte_count);
- ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
-}
-
-static void
-ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
- struct ofp13_group_stats *gs13, size_t length,
- struct ofp11_bucket_counter bucket_cnts[])
-{
- ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
- gs13->duration_sec = htonl(gs->duration_sec);
- gs13->duration_nsec = htonl(gs->duration_nsec);
-
-}
-
-/* Encodes 'gs' properly for the format of the list of group statistics
- * replies already begun in 'replies' and appends it to the list. 'replies'
- * must have originally been initialized with ofpmp_init(). */
-void
-ofputil_append_group_stats(struct ovs_list *replies,
- const struct ofputil_group_stats *gs)
-{
- size_t bucket_counter_size;
- struct ofp11_bucket_counter *bucket_counters;
- size_t length;
-
- bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
-
- switch (ofpmp_version(replies)) {
- case OFP11_VERSION:
- case OFP12_VERSION:{
- struct ofp11_group_stats *gs11;
-
- length = sizeof *gs11 + bucket_counter_size;
- gs11 = ofpmp_append(replies, length);
- bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
- ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
- break;
- }
-
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp13_group_stats *gs13;
-
- length = sizeof *gs13 + bucket_counter_size;
- gs13 = ofpmp_append(replies, length);
- bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
- ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
- break;
- }
-
- case OFP10_VERSION:
- default:
- OVS_NOT_REACHED();
- }
-}
-/* Returns an OpenFlow group features request for OpenFlow version
- * 'ofp_version'. */
-struct ofpbuf *
-ofputil_encode_group_features_request(enum ofp_version ofp_version)
-{
- struct ofpbuf *request = NULL;
-
- switch (ofp_version) {
- case OFP10_VERSION:
- case OFP11_VERSION:
- ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
- "(\'-O OpenFlow12\')");
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
- ofp_version, 0);
- break;
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-/* Returns a OpenFlow message that encodes 'features' properly as a reply to
- * group features request 'request'. */
-struct ofpbuf *
-ofputil_encode_group_features_reply(
- const struct ofputil_group_features *features,
- const struct ofp_header *request)
-{
- struct ofp12_group_features_stats *ogf;
- struct ofpbuf *reply;
- int i;
-
- reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
- request->version, request->xid, 0);
- ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
- ogf->types = htonl(features->types);
- ogf->capabilities = htonl(features->capabilities);
- for (i = 0; i < OFPGT12_N_TYPES; i++) {
- ogf->max_groups[i] = htonl(features->max_groups[i]);
- ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
- request->version);
- }
-
- return reply;
-}
-
-/* Decodes group features reply 'oh' into 'features'. */
-void
-ofputil_decode_group_features_reply(const struct ofp_header *oh,
- struct ofputil_group_features *features)
-{
- const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
- int i;
-
- features->types = ntohl(ogf->types);
- features->capabilities = ntohl(ogf->capabilities);
- for (i = 0; i < OFPGT12_N_TYPES; i++) {
- features->max_groups[i] = ntohl(ogf->max_groups[i]);
- features->ofpacts[i] = ofpact_bitmap_from_openflow(
- ogf->actions[i], oh->version);
- }
-}
-
-/* Parse a group status request message into a 32 bit OpenFlow 1.1
- * group ID and stores the latter in '*group_id'.
- * Returns 0 if successful, otherwise an OFPERR_* number. */
-enum ofperr
-ofputil_decode_group_stats_request(const struct ofp_header *request,
- uint32_t *group_id)
-{
- const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
- *group_id = ntohl(gsr11->group_id);
- return 0;
-}
-
-/* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
- * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
- * caller to eventually free.
- *
- * Multiple group stats replies can be packed into a single OpenFlow message.
- * Calling this function multiple times for a single 'msg' iterates through the
- * replies. The caller must initially leave 'msg''s layer pointers null and
- * not modify them between calls.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_group_stats_reply(struct ofpbuf *msg,
- struct ofputil_group_stats *gs)
-{
- struct ofp11_bucket_counter *obc;
- struct ofp11_group_stats *ogs11;
- enum ofpraw raw;
- enum ofperr error;
- size_t base_len;
- size_t length;
- size_t i;
-
- gs->bucket_stats = NULL;
- error = (msg->header ? ofpraw_decode(&raw, msg->header)
- : ofpraw_pull(&raw, msg));
- if (error) {
- return error;
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
- base_len = sizeof *ogs11;
- ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
- gs->duration_sec = gs->duration_nsec = UINT32_MAX;
- } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
- struct ofp13_group_stats *ogs13;
-
- base_len = sizeof *ogs13;
- ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
- if (ogs13) {
- ogs11 = &ogs13->gs;
- gs->duration_sec = ntohl(ogs13->duration_sec);
- gs->duration_nsec = ntohl(ogs13->duration_nsec);
- } else {
- ogs11 = NULL;
- }
- } else {
- OVS_NOT_REACHED();
- }
-
- if (!ogs11) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
- ofpraw_get_name(raw), msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
- length = ntohs(ogs11->length);
- if (length < sizeof base_len) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
- ofpraw_get_name(raw), length);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- gs->group_id = ntohl(ogs11->group_id);
- gs->ref_count = ntohl(ogs11->ref_count);
- gs->packet_count = ntohll(ogs11->packet_count);
- gs->byte_count = ntohll(ogs11->byte_count);
-
- gs->n_buckets = (length - base_len) / sizeof *obc;
- obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
- if (!obc) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
- ofpraw_get_name(raw), msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
- for (i = 0; i < gs->n_buckets; i++) {
- gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
- gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
- }
-
- return 0;
-}
-
-static void
-ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
- struct ofpbuf *openflow, enum ofp_version ofp_version)
-{
- struct ofp11_bucket *ob;
- size_t start;
-
- start = openflow->size;
- ofpbuf_put_zeros(openflow, sizeof *ob);
- ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
- openflow, ofp_version);
- ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
- ob->len = htons(openflow->size - start);
- ob->weight = htons(bucket->weight);
- ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
- ob->watch_group = htonl(bucket->watch_group);
-}
-
-static void
-ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
- uint32_t bucket_id, enum ofp11_group_type group_type,
- struct ofpbuf *openflow, enum ofp_version ofp_version)
-{
- struct ofp15_bucket *ob;
- size_t start, actions_start, actions_len;
-
- start = openflow->size;
- ofpbuf_put_zeros(openflow, sizeof *ob);
-
- actions_start = openflow->size;
- ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
- openflow, ofp_version);
- actions_len = openflow->size - actions_start;
-
- if (group_type == OFPGT11_SELECT) {
- ofpprop_put_u16(openflow, OFPGBPT15_WEIGHT, bucket->weight);
- }
- if (bucket->watch_port != OFPP_ANY) {
- ofpprop_put_be32(openflow, OFPGBPT15_WATCH_PORT,
- ofputil_port_to_ofp11(bucket->watch_port));
- }
- if (bucket->watch_group != OFPG_ANY) {
- ofpprop_put_u32(openflow, OFPGBPT15_WATCH_GROUP, bucket->watch_group);
- }
-
- ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
- ob->len = htons(openflow->size - start);
- ob->action_array_len = htons(actions_len);
- ob->bucket_id = htonl(bucket_id);
-}
-
-static void
-ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
- const struct ofputil_group_props *gp,
- struct ofpbuf *openflow)
-{
- struct ntr_group_prop_selection_method *prop;
- size_t start;
-
- start = openflow->size;
- ofpbuf_put_zeros(openflow, sizeof *prop);
- oxm_put_field_array(openflow, &gp->fields, ofp_version);
- prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
- prop->type = htons(OFPGPT15_EXPERIMENTER);
- prop->experimenter = htonl(NTR_VENDOR_ID);
- prop->exp_type = htonl(NTRT_SELECTION_METHOD);
- strcpy(prop->selection_method, gp->selection_method);
- prop->selection_method_param = htonll(gp->selection_method_param);
- ofpprop_end(openflow, start);
-}
-
-static void
-ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
- const struct ovs_list *buckets,
- struct ovs_list *replies,
- enum ofp_version version)
-{
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- struct ofp11_group_desc_stats *ogds;
- struct ofputil_bucket *bucket;
- size_t start_ogds;
-
- start_ogds = reply->size;
- ofpbuf_put_zeros(reply, sizeof *ogds);
- LIST_FOR_EACH (bucket, list_node, buckets) {
- ofputil_put_ofp11_bucket(bucket, reply, version);
- }
- ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
- ogds->length = htons(reply->size - start_ogds);
- ogds->type = gds->type;
- ogds->group_id = htonl(gds->group_id);
-
- ofpmp_postappend(replies, start_ogds);
-}
-
-static void
-ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
- const struct ovs_list *buckets,
- struct ovs_list *replies,
- enum ofp_version version)
-{
- struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
- struct ofp15_group_desc_stats *ogds;
- struct ofputil_bucket *bucket;
- size_t start_ogds, start_buckets;
-
- start_ogds = reply->size;
- ofpbuf_put_zeros(reply, sizeof *ogds);
- start_buckets = reply->size;
- LIST_FOR_EACH (bucket, list_node, buckets) {
- ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
- gds->type, reply, version);
- }
- ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
- ogds->type = gds->type;
- ogds->group_id = htonl(gds->group_id);
- ogds->bucket_list_len = htons(reply->size - start_buckets);
-
- /* Add group properties */
- if (gds->props.selection_method[0]) {
- ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
- reply);
- }
- ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
- ogds->length = htons(reply->size - start_ogds);
-
- ofpmp_postappend(replies, start_ogds);
-}
-
-/* Appends a group stats reply that contains the data in 'gds' to those already
- * present in the list of ofpbufs in 'replies'. 'replies' should have been
- * initialized with ofpmp_init(). */
-void
-ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
- const struct ovs_list *buckets,
- struct ovs_list *replies)
-{
- enum ofp_version version = ofpmp_version(replies);
-
- switch (version)
- {
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
- break;
-
- case OFP15_VERSION:
- ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
- break;
-
- case OFP10_VERSION:
- default:
- OVS_NOT_REACHED();
- }
-}
-
-static enum ofperr
-ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
- enum ofp_version version, struct ovs_list *buckets)
-{
- struct ofp11_bucket *ob;
- uint32_t bucket_id = 0;
-
- ovs_list_init(buckets);
- while (buckets_length > 0) {
- struct ofputil_bucket *bucket;
- struct ofpbuf ofpacts;
- enum ofperr error;
- size_t ob_len;
-
- ob = (buckets_length >= sizeof *ob
- ? ofpbuf_try_pull(msg, sizeof *ob)
- : NULL);
- if (!ob) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
- buckets_length);
- return OFPERR_OFPGMFC_BAD_BUCKET;
- }
-
- ob_len = ntohs(ob->len);
- if (ob_len < sizeof *ob) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
- "%"PRIuSIZE" is not valid", ob_len);
- return OFPERR_OFPGMFC_BAD_BUCKET;
- } else if (ob_len > buckets_length) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
- "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
- ob_len, buckets_length);
- return OFPERR_OFPGMFC_BAD_BUCKET;
- }
- buckets_length -= ob_len;
-
- ofpbuf_init(&ofpacts, 0);
- error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
- version, &ofpacts);
- if (error) {
- ofpbuf_uninit(&ofpacts);
- ofputil_bucket_list_destroy(buckets);
- return error;
- }
-
- bucket = xzalloc(sizeof *bucket);
- bucket->weight = ntohs(ob->weight);
- error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
- if (error) {
- ofpbuf_uninit(&ofpacts);
- ofputil_bucket_list_destroy(buckets);
- return OFPERR_OFPGMFC_BAD_WATCH;
- }
- bucket->watch_group = ntohl(ob->watch_group);
- bucket->bucket_id = bucket_id++;
-
- bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
- bucket->ofpacts_len = ofpacts.size;
- ovs_list_push_back(buckets, &bucket->list_node);
- }
-
- return 0;
-}
-
-static enum ofperr
-ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
- enum ofp_version version, uint8_t group_type,
- struct ovs_list *buckets)
-{
- struct ofp15_bucket *ob;
-
- ovs_list_init(buckets);
- while (buckets_length > 0) {
- struct ofputil_bucket *bucket = NULL;
- struct ofpbuf ofpacts;
- enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
- size_t ob_len, actions_len, properties_len;
- ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
- ovs_be32 watch_group = htonl(OFPG_ANY);
- ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
-
- ofpbuf_init(&ofpacts, 0);
-
- ob = ofpbuf_try_pull(msg, sizeof *ob);
- if (!ob) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
- " leftover bytes", buckets_length);
- goto err;
- }
-
- ob_len = ntohs(ob->len);
- actions_len = ntohs(ob->action_array_len);
-
- if (ob_len < sizeof *ob) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
- "%"PRIuSIZE" is not valid", ob_len);
- goto err;
- } else if (ob_len > buckets_length) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
- "%"PRIuSIZE" exceeds remaining buckets data size %"
- PRIuSIZE, ob_len, buckets_length);
- goto err;
- } else if (actions_len > ob_len - sizeof *ob) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
- "length %"PRIuSIZE" exceeds remaining bucket "
- "data size %"PRIuSIZE, actions_len,
- ob_len - sizeof *ob);
- goto err;
- }
- buckets_length -= ob_len;
-
- err = ofpacts_pull_openflow_actions(msg, actions_len, version,
- &ofpacts);
- if (err) {
- goto err;
- }
-
- properties_len = ob_len - sizeof *ob - actions_len;
- struct ofpbuf properties = ofpbuf_const_initializer(
- ofpbuf_pull(msg, properties_len), properties_len);
- while (properties.size > 0) {
- struct ofpbuf payload;
- uint64_t type;
-
- err = ofpprop_pull(&properties, &payload, &type);
- if (err) {
- goto err;
- }
-
- switch (type) {
- case OFPGBPT15_WEIGHT:
- err = ofpprop_parse_be16(&payload, &weight);
- break;
-
- case OFPGBPT15_WATCH_PORT:
- err = ofpprop_parse_be32(&payload, &watch_port);
- break;
-
- case OFPGBPT15_WATCH_GROUP:
- err = ofpprop_parse_be32(&payload, &watch_group);
- break;
-
- default:
- err = OFPPROP_UNKNOWN(false, "group bucket", type);
- break;
- }
-
- if (err) {
- goto err;
- }
- }
-
- bucket = xzalloc(sizeof *bucket);
-
- bucket->weight = ntohs(weight);
- err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
- if (err) {
- err = OFPERR_OFPGMFC_BAD_WATCH;
- goto err;
- }
- bucket->watch_group = ntohl(watch_group);
- bucket->bucket_id = ntohl(ob->bucket_id);
- if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
- bucket->bucket_id);
- err = OFPERR_OFPGMFC_BAD_BUCKET;
- goto err;
- }
-
- bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
- bucket->ofpacts_len = ofpacts.size;
- ovs_list_push_back(buckets, &bucket->list_node);
-
- continue;
-
- err:
- free(bucket);
- ofpbuf_uninit(&ofpacts);
- ofputil_bucket_list_destroy(buckets);
- return err;
- }
-
- if (ofputil_bucket_check_duplicate_id(buckets)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
- ofputil_bucket_list_destroy(buckets);
- return OFPERR_OFPGMFC_BAD_BUCKET;
- }
-
- return 0;
-}
-
-static void
-ofputil_init_group_properties(struct ofputil_group_props *gp)
-{
- memset(gp, 0, sizeof *gp);
-}
-
-static enum ofperr
-parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
- enum ofp11_group_type group_type,
- enum ofp15_group_mod_command group_cmd,
- struct ofputil_group_props *gp)
-{
- struct ntr_group_prop_selection_method *prop = payload->data;
- size_t fields_len, method_len;
- enum ofperr error;
-
- switch (group_type) {
- case OFPGT11_SELECT:
- break;
- case OFPGT11_ALL:
- case OFPGT11_INDIRECT:
- case OFPGT11_FF:
- OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
- "only allowed for select groups");
- return OFPERR_OFPBPC_BAD_VALUE;
- default:
- OVS_NOT_REACHED();
- }
-
- switch (group_cmd) {
- case OFPGC15_ADD:
- case OFPGC15_MODIFY:
- break;
- case OFPGC15_DELETE:
- case OFPGC15_INSERT_BUCKET:
- case OFPGC15_REMOVE_BUCKET:
- OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
- "only allowed for add and delete group modifications");
- return OFPERR_OFPBPC_BAD_VALUE;
- default:
- OVS_NOT_REACHED();
- }
-
- if (payload->size < sizeof *prop) {
- OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property "
- "length %u is not valid", payload->size);
- return OFPERR_OFPBPC_BAD_LEN;
- }
-
- method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
-
- if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
- OFPPROP_LOG(&bad_ofmsg_rl, false,
- "ntr selection method is not null terminated");
- return OFPERR_OFPBPC_BAD_VALUE;
- }
-
- if (strcmp("hash", prop->selection_method)) {
- OFPPROP_LOG(&bad_ofmsg_rl, false,
- "ntr selection method '%s' is not supported",
- prop->selection_method);
- return OFPERR_OFPBPC_BAD_VALUE;
- }
-
- strcpy(gp->selection_method, prop->selection_method);
- gp->selection_method_param = ntohll(prop->selection_method_param);
-
- if (!method_len && gp->selection_method_param) {
- OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
- "non-zero but selection method is empty");
- return OFPERR_OFPBPC_BAD_VALUE;
- }
-
- ofpbuf_pull(payload, sizeof *prop);
-
- fields_len = ntohs(prop->length) - sizeof *prop;
- if (!method_len && fields_len) {
- OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
- "zero but fields are provided");
- return OFPERR_OFPBPC_BAD_VALUE;
- }
-
- error = oxm_pull_field_array(payload->data, fields_len,
- &gp->fields);
- if (error) {
- OFPPROP_LOG(&bad_ofmsg_rl, false,
- "ntr selection method fields are invalid");
- return error;
- }
-
- return 0;
-}
-
-static enum ofperr
-parse_ofp15_group_properties(struct ofpbuf *msg,
- enum ofp11_group_type group_type,
- enum ofp15_group_mod_command group_cmd,
- struct ofputil_group_props *gp,
- size_t properties_len)
-{
- struct ofpbuf properties = ofpbuf_const_initializer(
- ofpbuf_pull(msg, properties_len), properties_len);
- while (properties.size > 0) {
- struct ofpbuf payload;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull(&properties, &payload, &type);
- if (error) {
- return error;
- }
-
- switch (type) {
- case OFPPROP_EXP(NTR_VENDOR_ID, NTRT_SELECTION_METHOD):
- case OFPPROP_EXP(NTR_COMPAT_VENDOR_ID, NTRT_SELECTION_METHOD):
- error = parse_group_prop_ntr_selection_method(&payload, group_type,
- group_cmd, gp);
- break;
-
- default:
- error = OFPPROP_UNKNOWN(false, "group", type);
- break;
- }
-
- if (error) {
- return error;
- }
- }
-
- return 0;
-}
-
-static int
-ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
- struct ofpbuf *msg,
- enum ofp_version version)
-{
- struct ofp11_group_desc_stats *ogds;
- size_t length;
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- ogds = ofpbuf_try_pull(msg, sizeof *ogds);
- if (!ogds) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
- "leftover bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
- gd->type = ogds->type;
- gd->group_id = ntohl(ogds->group_id);
-
- length = ntohs(ogds->length);
- if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
- "length %"PRIuSIZE, length);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
- &gd->buckets);
-}
-
-static int
-ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
- struct ofpbuf *msg,
- enum ofp_version version)
-{
- struct ofp15_group_desc_stats *ogds;
- uint16_t length, bucket_list_len;
- int error;
-
- if (!msg->header) {
- ofpraw_pull_assert(msg);
- }
-
- if (!msg->size) {
- return EOF;
- }
-
- ogds = ofpbuf_try_pull(msg, sizeof *ogds);
- if (!ogds) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
- "leftover bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
- }
- gd->type = ogds->type;
- gd->group_id = ntohl(ogds->group_id);
-
- length = ntohs(ogds->length);
- if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
- "length %u", length);
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- bucket_list_len = ntohs(ogds->bucket_list_len);
- if (length < bucket_list_len + sizeof *ogds) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
- "bucket list length %u", bucket_list_len);
- return OFPERR_OFPBRC_BAD_LEN;
- }
- error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
- &gd->buckets);
- if (error) {
- return error;
- }
-
- /* By definition group desc messages don't have a group mod command.
- * However, parse_group_prop_ntr_selection_method() checks to make sure
- * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
- * against group mod messages with other commands supplying
- * a NTR selection method group experimenter property.
- * Such properties are valid for group desc replies so
- * claim that the group mod command is OFPGC15_ADD to
- * satisfy the check in parse_group_prop_ntr_selection_method() */
- return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
- length - sizeof *ogds - bucket_list_len);
-}
-
-/* Converts a group description reply in 'msg' into an abstract
- * ofputil_group_desc in 'gd'.
- *
- * Multiple group description replies can be packed into a single OpenFlow
- * message. Calling this function multiple times for a single 'msg' iterates
- * through the replies. The caller must initially leave 'msg''s layer pointers
- * null and not modify them between calls.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
- struct ofpbuf *msg, enum ofp_version version)
-{
- ofputil_init_group_properties(&gd->props);
-
- switch (version)
- {
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
-
- case OFP15_VERSION:
- return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
-
- case OFP10_VERSION:
- default:
- OVS_NOT_REACHED();
- }
-}
-
-void
-ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
-{
- ofputil_bucket_list_destroy(&gm->buckets);
-}
-
-static struct ofpbuf *
-ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
- const struct ofputil_group_mod *gm)
-{
- struct ofpbuf *b;
- struct ofp11_group_mod *ogm;
- size_t start_ogm;
- struct ofputil_bucket *bucket;
-
- b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
- start_ogm = b->size;
- ofpbuf_put_zeros(b, sizeof *ogm);
-
- LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
- ofputil_put_ofp11_bucket(bucket, b, ofp_version);
- }
- ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
- ogm->command = htons(gm->command);
- ogm->type = gm->type;
- ogm->group_id = htonl(gm->group_id);
-
- return b;
-}
-
-static struct ofpbuf *
-ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
- const struct ofputil_group_mod *gm)
-{
- struct ofpbuf *b;
- struct ofp15_group_mod *ogm;
- size_t start_ogm;
- struct ofputil_bucket *bucket;
- struct id_pool *bucket_ids = NULL;
-
- b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
- start_ogm = b->size;
- ofpbuf_put_zeros(b, sizeof *ogm);
-
- LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
- uint32_t bucket_id;
-
- /* Generate a bucket id if none was supplied */
- if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
- if (!bucket_ids) {
- const struct ofputil_bucket *bkt;
-
- bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
-
- /* Mark all bucket_ids that are present in gm
- * as used in the pool. */
- LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
- if (bkt == bucket) {
- break;
- }
- if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
- id_pool_add(bucket_ids, bkt->bucket_id);
- }
- }
- }
-
- if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
- OVS_NOT_REACHED();
- }
- } else {
- bucket_id = bucket->bucket_id;
- }
-
- ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
- }
- ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
- ogm->command = htons(gm->command);
- ogm->type = gm->type;
- ogm->group_id = htonl(gm->group_id);
- ogm->command_bucket_id = htonl(gm->command_bucket_id);
- ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
-
- /* Add group properties */
- if (gm->props.selection_method[0]) {
- ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
- }
-
- id_pool_destroy(bucket_ids);
- return b;
-}
-
-static void
-bad_group_cmd(enum ofp15_group_mod_command cmd)
-{
- const char *opt_version;
- const char *version;
- const char *cmd_str;
-
- switch (cmd) {
- case OFPGC15_ADD:
- case OFPGC15_MODIFY:
- case OFPGC15_DELETE:
- version = "1.1";
- opt_version = "11";
- break;
-
- case OFPGC15_INSERT_BUCKET:
- case OFPGC15_REMOVE_BUCKET:
- version = "1.5";
- opt_version = "15";
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-
- switch (cmd) {
- case OFPGC15_ADD:
- cmd_str = "add-group";
- break;
-
- case OFPGC15_MODIFY:
- cmd_str = "mod-group";
- break;
-
- case OFPGC15_DELETE:
- cmd_str = "del-group";
- break;
-
- case OFPGC15_INSERT_BUCKET:
- cmd_str = "insert-bucket";
- break;
-
- case OFPGC15_REMOVE_BUCKET:
- cmd_str = "remove-bucket";
- break;
-
- default:
- OVS_NOT_REACHED();
- }
-
- ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
- cmd_str, version, opt_version);
-
-}
-
-/* Converts abstract group mod 'gm' into a message for OpenFlow version
- * 'ofp_version' and returns the message. */
-struct ofpbuf *
-ofputil_encode_group_mod(enum ofp_version ofp_version,
- const struct ofputil_group_mod *gm)
-{
-
- switch (ofp_version) {
- case OFP10_VERSION:
- bad_group_cmd(gm->command);
-
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- if (gm->command > OFPGC11_DELETE) {
- bad_group_cmd(gm->command);
- }
- return ofputil_encode_ofp11_group_mod(ofp_version, gm);
-
- case OFP15_VERSION:
- return ofputil_encode_ofp15_group_mod(ofp_version, gm);
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-static enum ofperr
-ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
- struct ofputil_group_mod *gm)
-{
- const struct ofp11_group_mod *ogm;
- enum ofperr error;
-
- ogm = ofpbuf_pull(msg, sizeof *ogm);
- gm->command = ntohs(ogm->command);
- gm->type = ogm->type;
- gm->group_id = ntohl(ogm->group_id);
- gm->command_bucket_id = OFPG15_BUCKET_ALL;
-
- error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
- &gm->buckets);
-
- /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
- if (!error
- && ofp_version >= OFP13_VERSION
- && gm->command == OFPGC11_DELETE
- && !ovs_list_is_empty(&gm->buckets)) {
- error = OFPERR_OFPGMFC_INVALID_GROUP;
- }
-
- return error;
-}
-
-static enum ofperr
-ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
- struct ofputil_group_mod *gm)
-{
- const struct ofp15_group_mod *ogm;
- uint16_t bucket_list_len;
- enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
-
- ogm = ofpbuf_pull(msg, sizeof *ogm);
- gm->command = ntohs(ogm->command);
- gm->type = ogm->type;
- gm->group_id = ntohl(ogm->group_id);
-
- gm->command_bucket_id = ntohl(ogm->command_bucket_id);
- switch (gm->command) {
- case OFPGC15_REMOVE_BUCKET:
- if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
- error = 0;
- }
- /* Fall through */
- case OFPGC15_INSERT_BUCKET:
- if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
- gm->command_bucket_id == OFPG15_BUCKET_FIRST
- || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
- error = 0;
- }
- break;
-
- case OFPGC11_ADD:
- case OFPGC11_MODIFY:
- case OFPGC11_DELETE:
- default:
- if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
- error = 0;
- }
- break;
- }
- if (error) {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "group command bucket id (%u) is out of range",
- gm->command_bucket_id);
- return OFPERR_OFPGMFC_BAD_BUCKET;
- }
-
- bucket_list_len = ntohs(ogm->bucket_array_len);
- error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
- gm->type, &gm->buckets);
- if (error) {
- return error;
- }
-
- return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
- msg->size);
-}
-
-/* Converts OpenFlow group mod message 'oh' into an abstract group mod in
- * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
-enum ofperr
-ofputil_decode_group_mod(const struct ofp_header *oh,
- struct ofputil_group_mod *gm)
-{
- ofputil_init_group_properties(&gm->props);
-
- enum ofp_version ofp_version = oh->version;
- struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&msg);
-
- enum ofperr err;
- switch (ofp_version)
- {
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
- break;
-
- case OFP15_VERSION:
- err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
- break;
-
- case OFP10_VERSION:
- default:
- OVS_NOT_REACHED();
- }
- if (err) {
- return err;
- }
-
- switch (gm->type) {
- case OFPGT11_INDIRECT:
- if (gm->command != OFPGC11_DELETE
- && !ovs_list_is_singleton(&gm->buckets) ) {
- return OFPERR_OFPGMFC_INVALID_GROUP;
- }
- break;
- case OFPGT11_ALL:
- case OFPGT11_SELECT:
- case OFPGT11_FF:
- break;
- default:
- return OFPERR_OFPGMFC_BAD_TYPE;
- }
-
- switch (gm->command) {
- case OFPGC11_ADD:
- case OFPGC11_MODIFY:
- case OFPGC11_DELETE:
- case OFPGC15_INSERT_BUCKET:
- break;
- case OFPGC15_REMOVE_BUCKET:
- if (!ovs_list_is_empty(&gm->buckets)) {
- return OFPERR_OFPGMFC_BAD_BUCKET;
- }
- break;
- default:
- return OFPERR_OFPGMFC_BAD_COMMAND;
- }
-
- struct ofputil_bucket *bucket;
- LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
- if (bucket->weight && gm->type != OFPGT11_SELECT) {
- return OFPERR_OFPGMFC_INVALID_GROUP;
- }
-
- switch (gm->type) {
- case OFPGT11_ALL:
- case OFPGT11_INDIRECT:
- if (ofputil_bucket_has_liveness(bucket)) {
- return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
- }
- break;
- case OFPGT11_SELECT:
- break;
- case OFPGT11_FF:
- if (!ofputil_bucket_has_liveness(bucket)) {
- return OFPERR_OFPGMFC_INVALID_GROUP;
- }
- break;
- default:
- /* Returning BAD TYPE to be consistent
- * though gm->type has been checked already. */
- return OFPERR_OFPGMFC_BAD_TYPE;
- }
- }
-
- return 0;
-}
-
-/* Parse a queue status request message into 'oqsr'.
- * Returns 0 if successful, otherwise an OFPERR_* number. */
-enum ofperr
-ofputil_decode_queue_stats_request(const struct ofp_header *request,
- struct ofputil_queue_stats_request *oqsr)
-{
- switch ((enum ofp_version)request->version) {
- case OFP15_VERSION:
- case OFP14_VERSION:
- case OFP13_VERSION:
- case OFP12_VERSION:
- case OFP11_VERSION: {
- const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
- oqsr->queue_id = ntohl(qsr11->queue_id);
- return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
- }
-
- case OFP10_VERSION: {
- const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
- oqsr->queue_id = ntohl(qsr10->queue_id);
- oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
- /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
- if (oqsr->port_no == OFPP_ALL) {
- oqsr->port_no = OFPP_ANY;
- }
- return 0;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-/* Encode a queue stats request for 'oqsr', the encoded message
- * will be for OpenFlow version 'ofp_version'. Returns message
- * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
-struct ofpbuf *
-ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
- const struct ofputil_queue_stats_request *oqsr)
-{
- struct ofpbuf *request;
-
- switch (ofp_version) {
- case OFP11_VERSION:
- case OFP12_VERSION:
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp11_queue_stats_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
- req->queue_id = htonl(oqsr->queue_id);
- break;
- }
- case OFP10_VERSION: {
- struct ofp10_queue_stats_request *req;
- request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
- req = ofpbuf_put_zeros(request, sizeof *req);
- /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
- req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
- ? OFPP_ALL : oqsr->port_no));
- req->queue_id = htonl(oqsr->queue_id);
- break;
- }
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-/* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
- * message 'oh'. */
-size_t
-ofputil_count_queue_stats(const struct ofp_header *oh)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&b);
-
- for (size_t n = 0; ; n++) {
- struct ofputil_queue_stats qs;
- if (ofputil_decode_queue_stats(&qs, &b)) {
- return n;
- }
- }
-}
-
-static enum ofperr
-ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
- const struct ofp10_queue_stats *qs10)
-{
- oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
- oqs->queue_id = ntohl(qs10->queue_id);
- oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
- oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
- oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
- oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
-
- return 0;
-}
-
-static enum ofperr
-ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
- const struct ofp11_queue_stats *qs11)
-{
- enum ofperr error;
-
- error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
- if (error) {
- return error;
- }
-
- oqs->queue_id = ntohl(qs11->queue_id);
- oqs->tx_bytes = ntohll(qs11->tx_bytes);
- oqs->tx_packets = ntohll(qs11->tx_packets);
- oqs->tx_errors = ntohll(qs11->tx_errors);
- oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
-
- return 0;
-}
-
-static enum ofperr
-ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
- const struct ofp13_queue_stats *qs13)
-{
- enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
- if (!error) {
- oqs->duration_sec = ntohl(qs13->duration_sec);
- oqs->duration_nsec = ntohl(qs13->duration_nsec);
- }
-
- return error;
-}
-
-static enum ofperr
-ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
- struct ofpbuf *msg)
-{
- const struct ofp14_queue_stats *qs14;
- size_t len;
-
- qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
- if (!qs14) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
-
- len = ntohs(qs14->length);
- if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
- return OFPERR_OFPBRC_BAD_LEN;
- }
- ofpbuf_pull(msg, len - sizeof *qs14);
-
- /* No properties yet defined, so ignore them for now. */
-
- return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
-}
-
-/* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
- * ofputil_queue_stats in 'qs'.
- *
- * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
- * message. Calling this function multiple times for a single 'msg' iterates
- * through the replies. The caller must initially leave 'msg''s layer pointers
- * null and not modify them between calls.
- *
- * Returns 0 if successful, EOF if no replies were left in this 'msg',
- * otherwise a positive errno value. */
-int
-ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
-{
- enum ofperr error;
- enum ofpraw raw;
-
- error = (msg->header ? ofpraw_decode(&raw, msg->header)
- : ofpraw_pull(&raw, msg));
- if (error) {
- return error;
- }
-
- if (!msg->size) {
- return EOF;
- } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
- return ofputil_pull_ofp14_queue_stats(qs, msg);
- } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
- const struct ofp13_queue_stats *qs13;
-
- qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
- if (!qs13) {
- goto bad_len;
- }
- return ofputil_queue_stats_from_ofp13(qs, qs13);
- } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
- const struct ofp11_queue_stats *qs11;
-
- qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
- if (!qs11) {
- goto bad_len;
- }
- return ofputil_queue_stats_from_ofp11(qs, qs11);
- } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
- const struct ofp10_queue_stats *qs10;
-
- qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
- if (!qs10) {
- goto bad_len;
- }
- return ofputil_queue_stats_from_ofp10(qs, qs10);
- } else {
- OVS_NOT_REACHED();
- }
-
- bad_len:
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
- "bytes at end", msg->size);
- return OFPERR_OFPBRC_BAD_LEN;
-}
-
-static void
-ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
- struct ofp10_queue_stats *qs10)
-{
- qs10->port_no = htons(ofp_to_u16(oqs->port_no));
- memset(qs10->pad, 0, sizeof qs10->pad);
- qs10->queue_id = htonl(oqs->queue_id);
- put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
- put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
- put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
-}
-
-static void
-ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
- struct ofp11_queue_stats *qs11)
-{
- qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
- qs11->queue_id = htonl(oqs->queue_id);
- qs11->tx_bytes = htonll(oqs->tx_bytes);
- qs11->tx_packets = htonll(oqs->tx_packets);
- qs11->tx_errors = htonll(oqs->tx_errors);
-}
-
-static void
-ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
- struct ofp13_queue_stats *qs13)
-{
- ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
- if (oqs->duration_sec != UINT32_MAX) {
- qs13->duration_sec = htonl(oqs->duration_sec);
- qs13->duration_nsec = htonl(oqs->duration_nsec);
- } else {
- qs13->duration_sec = OVS_BE32_MAX;
- qs13->duration_nsec = OVS_BE32_MAX;
- }
-}
-
-static void
-ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
- struct ofp14_queue_stats *qs14)
-{
- qs14->length = htons(sizeof *qs14);
- memset(qs14->pad, 0, sizeof qs14->pad);
- ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
-}
-
-
-/* Encode a queue stat for 'oqs' and append it to 'replies'. */
-void
-ofputil_append_queue_stat(struct ovs_list *replies,
- const struct ofputil_queue_stats *oqs)
-{
- switch (ofpmp_version(replies)) {
- case OFP13_VERSION: {
- struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_queue_stats_to_ofp13(oqs, reply);
- break;
- }
-
- case OFP12_VERSION:
- case OFP11_VERSION: {
- struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_queue_stats_to_ofp11(oqs, reply);
- break;
- }
-
- case OFP10_VERSION: {
- struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_queue_stats_to_ofp10(oqs, reply);
- break;
- }
-
- case OFP14_VERSION:
- case OFP15_VERSION: {
- struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
- ofputil_queue_stats_to_ofp14(oqs, reply);
- break;
- }
-
- default:
- OVS_NOT_REACHED();
- }
-}
-
-enum ofperr
-ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
- struct ofputil_bundle_ctrl_msg *msg)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL
- || raw == OFPRAW_ONFT13_BUNDLE_CONTROL);
-
- const struct ofp14_bundle_ctrl_msg *m = b.msg;
- msg->bundle_id = ntohl(m->bundle_id);
- msg->type = ntohs(m->type);
- msg->flags = ntohs(m->flags);
-
- return 0;
-}
-
-struct ofpbuf *
-ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
- struct ofputil_bundle_ctrl_msg *bc)
-{
- struct ofpbuf *request;
- struct ofp14_bundle_ctrl_msg *m;
-
- switch (ofp_version) {
- case OFP10_VERSION:
- case OFP11_VERSION:
- case OFP12_VERSION:
- ovs_fatal(0, "bundles need OpenFlow 1.3 or later "
- "(\'-O OpenFlow14\')");
- case OFP13_VERSION:
- case OFP14_VERSION:
- case OFP15_VERSION:
- request = ofpraw_alloc(ofp_version == OFP13_VERSION
- ? OFPRAW_ONFT13_BUNDLE_CONTROL
- : OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
- m = ofpbuf_put_zeros(request, sizeof *m);
-
- m->bundle_id = htonl(bc->bundle_id);
- m->type = htons(bc->type);
- m->flags = htons(bc->flags);
- break;
- default:
- OVS_NOT_REACHED();
- }
-
- return request;
-}
-
-struct ofpbuf *
-ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
- struct ofputil_bundle_ctrl_msg *msg)
-{
- struct ofpbuf *buf;
- struct ofp14_bundle_ctrl_msg *m;
-
- buf = ofpraw_alloc_reply(oh->version == OFP13_VERSION
- ? OFPRAW_ONFT13_BUNDLE_CONTROL
- : OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
- m = ofpbuf_put_zeros(buf, sizeof *m);
-
- m->bundle_id = htonl(msg->bundle_id);
- m->type = htons(msg->type);
- m->flags = htons(msg->flags);
-
- return buf;
-}
-
-/* Return true for bundlable state change requests, false for other messages.
- */
-static bool
-ofputil_is_bundlable(enum ofptype type)
-{
- switch (type) {
- /* Minimum required by OpenFlow 1.4. */
- case OFPTYPE_PORT_MOD:
- case OFPTYPE_FLOW_MOD:
- return true;
-
- /* Nice to have later. */
- case OFPTYPE_FLOW_MOD_TABLE_ID:
- case OFPTYPE_GROUP_MOD:
- case OFPTYPE_TABLE_MOD:
- case OFPTYPE_METER_MOD:
- case OFPTYPE_PACKET_OUT:
- case OFPTYPE_NXT_TLV_TABLE_MOD:
-
- /* Not to be bundlable. */
- case OFPTYPE_ECHO_REQUEST:
- case OFPTYPE_FEATURES_REQUEST:
- case OFPTYPE_GET_CONFIG_REQUEST:
- case OFPTYPE_SET_CONFIG:
- case OFPTYPE_BARRIER_REQUEST:
- case OFPTYPE_ROLE_REQUEST:
- case OFPTYPE_ECHO_REPLY:
- case OFPTYPE_SET_FLOW_FORMAT:
- case OFPTYPE_SET_PACKET_IN_FORMAT:
- case OFPTYPE_SET_CONTROLLER_ID:
- case OFPTYPE_FLOW_AGE:
- case OFPTYPE_FLOW_MONITOR_CANCEL:
- case OFPTYPE_SET_ASYNC_CONFIG:
- case OFPTYPE_GET_ASYNC_REQUEST:
- case OFPTYPE_DESC_STATS_REQUEST:
- case OFPTYPE_FLOW_STATS_REQUEST:
- case OFPTYPE_AGGREGATE_STATS_REQUEST:
- case OFPTYPE_TABLE_STATS_REQUEST:
- case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
- case OFPTYPE_TABLE_DESC_REQUEST:
- case OFPTYPE_PORT_STATS_REQUEST:
- case OFPTYPE_QUEUE_STATS_REQUEST:
- case OFPTYPE_PORT_DESC_STATS_REQUEST:
- case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
- case OFPTYPE_METER_STATS_REQUEST:
- case OFPTYPE_METER_CONFIG_STATS_REQUEST:
- case OFPTYPE_METER_FEATURES_STATS_REQUEST:
- case OFPTYPE_GROUP_STATS_REQUEST:
- case OFPTYPE_GROUP_DESC_STATS_REQUEST:
- case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
- case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
- case OFPTYPE_BUNDLE_CONTROL:
- case OFPTYPE_BUNDLE_ADD_MESSAGE:
- case OFPTYPE_HELLO:
- case OFPTYPE_ERROR:
- case OFPTYPE_FEATURES_REPLY:
- case OFPTYPE_GET_CONFIG_REPLY:
- case OFPTYPE_PACKET_IN:
- case OFPTYPE_FLOW_REMOVED:
- case OFPTYPE_PORT_STATUS:
- case OFPTYPE_BARRIER_REPLY:
- case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
- case OFPTYPE_DESC_STATS_REPLY:
- case OFPTYPE_FLOW_STATS_REPLY:
- case OFPTYPE_QUEUE_STATS_REPLY:
- case OFPTYPE_PORT_STATS_REPLY:
- case OFPTYPE_TABLE_STATS_REPLY:
- case OFPTYPE_AGGREGATE_STATS_REPLY:
- case OFPTYPE_PORT_DESC_STATS_REPLY:
- case OFPTYPE_ROLE_REPLY:
- case OFPTYPE_FLOW_MONITOR_PAUSED:
- case OFPTYPE_FLOW_MONITOR_RESUMED:
- case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
- case OFPTYPE_GET_ASYNC_REPLY:
- case OFPTYPE_GROUP_STATS_REPLY:
- case OFPTYPE_GROUP_DESC_STATS_REPLY:
- case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
- case OFPTYPE_METER_STATS_REPLY:
- case OFPTYPE_METER_CONFIG_STATS_REPLY:
- case OFPTYPE_METER_FEATURES_STATS_REPLY:
- case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
- case OFPTYPE_TABLE_DESC_REPLY:
- case OFPTYPE_ROLE_STATUS:
- case OFPTYPE_REQUESTFORWARD:
- case OFPTYPE_TABLE_STATUS:
- case OFPTYPE_NXT_TLV_TABLE_REQUEST:
- case OFPTYPE_NXT_TLV_TABLE_REPLY:
- case OFPTYPE_NXT_RESUME:
- break;
- }
-
- return false;
-}
-
-enum ofperr
-ofputil_decode_bundle_add(const struct ofp_header *oh,
- struct ofputil_bundle_add_msg *msg,
- enum ofptype *typep)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
- ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE
- || raw == OFPRAW_ONFT13_BUNDLE_ADD_MESSAGE);
-
- const struct ofp14_bundle_ctrl_msg *m = ofpbuf_pull(&b, sizeof *m);
- msg->bundle_id = ntohl(m->bundle_id);
- msg->flags = ntohs(m->flags);
-
- msg->msg = b.data;
- if (msg->msg->version != oh->version) {
- return OFPERR_NXBFC_BAD_VERSION;
- }
- size_t inner_len = ntohs(msg->msg->length);
- if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
- return OFPERR_OFPBFC_MSG_BAD_LEN;
- }
- if (msg->msg->xid != oh->xid) {
- return OFPERR_OFPBFC_MSG_BAD_XID;
- }
-
- /* Reject unbundlable messages. */
- enum ofptype type;
- enum ofperr error = ofptype_decode(&type, msg->msg);
- if (error) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
- "message is unparsable (%s)", ofperr_get_name(error));
- return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
- }
-
- if (!ofputil_is_bundlable(type)) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
- "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(type));
- return OFPERR_OFPBFC_MSG_UNSUP;
- }
- if (typep) {
- *typep = type;
- }
-
- return 0;
-}
-
-struct ofpbuf *
-ofputil_encode_bundle_add(enum ofp_version ofp_version,
- struct ofputil_bundle_add_msg *msg)
-{
- struct ofpbuf *request;
- struct ofp14_bundle_ctrl_msg *m;
-
- /* Must use the same xid as the embedded message. */
- request = ofpraw_alloc_xid(ofp_version == OFP13_VERSION
- ? OFPRAW_ONFT13_BUNDLE_ADD_MESSAGE
- : OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
- msg->msg->xid, 0);
- m = ofpbuf_put_zeros(request, sizeof *m);
-
- m->bundle_id = htonl(msg->bundle_id);
- m->flags = htons(msg->flags);
- ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
-
- return request;
-}
-
-static void
-encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
-{
- struct ofputil_tlv_map *map;
-
- LIST_FOR_EACH (map, list_node, mappings) {
- struct nx_tlv_map *nx_map;
-
- nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
- nx_map->option_class = htons(map->option_class);
- nx_map->option_type = map->option_type;
- nx_map->option_len = map->option_len;
- nx_map->index = htons(map->index);
- }
-}
-
-struct ofpbuf *
-ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
- struct ofputil_tlv_table_mod *ttm)
-{
- struct ofpbuf *b;
- struct nx_tlv_table_mod *nx_ttm;
-
- b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
- nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
- nx_ttm->command = htons(ttm->command);
- encode_tlv_table_mappings(b, &ttm->mappings);
-
- return b;
-}
-
-static enum ofperr
-decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
- struct ovs_list *mappings)
-{
- ovs_list_init(mappings);
-
- while (msg->size) {
- struct nx_tlv_map *nx_map;
- struct ofputil_tlv_map *map;
-
- nx_map = ofpbuf_pull(msg, sizeof *nx_map);
- map = xmalloc(sizeof *map);
- ovs_list_push_back(mappings, &map->list_node);
-
- map->option_class = ntohs(nx_map->option_class);
- map->option_type = nx_map->option_type;
-
- map->option_len = nx_map->option_len;
- if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "tlv table option length (%u) is not a valid option size",
- map->option_len);
- ofputil_uninit_tlv_table(mappings);
- return OFPERR_NXTTMFC_BAD_OPT_LEN;
- }
-
- map->index = ntohs(nx_map->index);
- if (map->index >= max_fields) {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "tlv table field index (%u) is too large (max %u)",
- map->index, max_fields - 1);
- ofputil_uninit_tlv_table(mappings);
- return OFPERR_NXTTMFC_BAD_FIELD_IDX;
- }
- }
-
- return 0;
-}
-
-enum ofperr
-ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
- struct ofputil_tlv_table_mod *ttm)
-{
- struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&msg);
-
- struct nx_tlv_table_mod *nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
- ttm->command = ntohs(nx_ttm->command);
- if (ttm->command > NXTTMC_CLEAR) {
- VLOG_WARN_RL(&bad_ofmsg_rl,
- "tlv table mod command (%u) is out of range",
- ttm->command);
- return OFPERR_NXTTMFC_BAD_COMMAND;
- }
-
- return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
- &ttm->mappings);
-}
-
-struct ofpbuf *
-ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
- struct ofputil_tlv_table_reply *ttr)
-{
- struct ofpbuf *b;
- struct nx_tlv_table_reply *nx_ttr;
-
- b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
- nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
- nx_ttr->max_option_space = htonl(ttr->max_option_space);
- nx_ttr->max_fields = htons(ttr->max_fields);
-
- encode_tlv_table_mappings(b, &ttr->mappings);
-
- return b;
-}
-
-/* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
- * if successful, otherwise an ofperr.
- *
- * The decoder verifies that the indexes in 'ttr->mappings' are less than
- * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
- * less than TUN_METADATA_NUM_OPTS. */
-enum ofperr
-ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
- struct ofputil_tlv_table_reply *ttr)
-{
- struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
- ofpraw_pull_assert(&msg);
-
- struct nx_tlv_table_reply *nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
- ttr->max_option_space = ntohl(nx_ttr->max_option_space);
- ttr->max_fields = ntohs(nx_ttr->max_fields);
-
- return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
-}
-
-void
-ofputil_uninit_tlv_table(struct ovs_list *mappings)
-{
- struct ofputil_tlv_map *map;
-
- LIST_FOR_EACH_POP (map, list_node, mappings) {
- free(map);
- }
-}
-
-const char *
-ofputil_async_msg_type_to_string(enum ofputil_async_msg_type type)
-{
- switch (type) {
- case OAM_PACKET_IN: return "PACKET_IN";
- case OAM_PORT_STATUS: return "PORT_STATUS";
- case OAM_FLOW_REMOVED: return "FLOW_REMOVED";
- case OAM_ROLE_STATUS: return "ROLE_STATUS";
- case OAM_TABLE_STATUS: return "TABLE_STATUS";
- case OAM_REQUESTFORWARD: return "REQUESTFORWARD";
-
- case OAM_N_TYPES:
- default:
- OVS_NOT_REACHED();
- }
-}
-
-struct ofp14_async_prop {
- uint64_t prop_type;
- enum ofputil_async_msg_type oam;
- bool master;
- uint32_t allowed10, allowed14;
-};
-
-#define AP_PAIR(SLAVE_PROP_TYPE, OAM, A10, A14) \
- { SLAVE_PROP_TYPE, OAM, false, A10, (A14) ? (A14) : (A10) }, \
- { (SLAVE_PROP_TYPE + 1), OAM, true, A10, (A14) ? (A14) : (A10) }
-
-static const struct ofp14_async_prop async_props[] = {
- AP_PAIR( 0, OAM_PACKET_IN, OFPR10_BITS, OFPR14_BITS),
- AP_PAIR( 2, OAM_PORT_STATUS, (1 << OFPPR_N_REASONS) - 1, 0),
- AP_PAIR( 4, OAM_FLOW_REMOVED, (1 << OVS_OFPRR_NONE) - 1, 0),
- AP_PAIR( 6, OAM_ROLE_STATUS, (1 << OFPCRR_N_REASONS) - 1, 0),
- AP_PAIR( 8, OAM_TABLE_STATUS, OFPTR_BITS, 0),
- AP_PAIR(10, OAM_REQUESTFORWARD, (1 << OFPRFR_N_REASONS) - 1, 0),
-};
-
-#define FOR_EACH_ASYNC_PROP(VAR) \
- for (const struct ofp14_async_prop *VAR = async_props; \
- VAR < &async_props[ARRAY_SIZE(async_props)]; VAR++)
-
-static const struct ofp14_async_prop *
-get_ofp14_async_config_prop_by_prop_type(uint64_t prop_type)
-{
- FOR_EACH_ASYNC_PROP (ap) {
- if (prop_type == ap->prop_type) {
- return ap;
- }
- }
- return NULL;
-}
-
-static const struct ofp14_async_prop *
-get_ofp14_async_config_prop_by_oam(enum ofputil_async_msg_type oam,
- bool master)
-{
- FOR_EACH_ASYNC_PROP (ap) {
- if (ap->oam == oam && ap->master == master) {
- return ap;
- }
- }
- return NULL;
-}
-
-static uint32_t
-ofp14_async_prop_allowed(const struct ofp14_async_prop *prop,
- enum ofp_version version)
-{
- return version >= OFP14_VERSION ? prop->allowed14 : prop->allowed10;
-}
-
-static ovs_be32
-encode_async_mask(const struct ofputil_async_cfg *src,
- const struct ofp14_async_prop *ap,
- enum ofp_version version)
-{
- uint32_t mask = ap->master ? src->master[ap->oam] : src->slave[ap->oam];
- return htonl(mask & ofp14_async_prop_allowed(ap, version));
-}
-
-static enum ofperr
-decode_async_mask(ovs_be32 src,
- const struct ofp14_async_prop *ap, enum ofp_version version,
- bool loose, struct ofputil_async_cfg *dst)
-{
- uint32_t mask = ntohl(src);
- uint32_t allowed = ofp14_async_prop_allowed(ap, version);
- if (mask & ~allowed) {
- OFPPROP_LOG(&bad_ofmsg_rl, loose,
- "bad value %#x for %s (allowed mask %#x)",
- mask, ofputil_async_msg_type_to_string(ap->oam),
- allowed);
- mask &= allowed;
- if (!loose) {
- return OFPERR_OFPACFC_INVALID;
- }
- }
-
- if (ap->oam == OAM_PACKET_IN) {
- if (mask & (1u << OFPR_NO_MATCH)) {
- mask |= 1u << OFPR_EXPLICIT_MISS;
- if (version < OFP13_VERSION) {
- mask |= 1u << OFPR_IMPLICIT_MISS;
- }
- }
- }
-
- uint32_t *array = ap->master ? dst->master : dst->slave;
- array[ap->oam] = mask;
- return 0;
-}
-
-static enum ofperr
-parse_async_tlv(const struct ofpbuf *property,
- const struct ofp14_async_prop *ap,
- struct ofputil_async_cfg *ac,
- enum ofp_version version, bool loose)
-{
- enum ofperr error;
- ovs_be32 mask;
-
- error = ofpprop_parse_be32(property, &mask);
- if (error) {
- return error;
- }
-
- if (ofpprop_is_experimenter(ap->prop_type)) {
- /* For experimenter properties, whether a property is for the master or
- * slave role is indicated by both 'type' and 'exp_type' in struct
- * ofp_prop_experimenter. Check that these are consistent. */
- const struct ofp_prop_experimenter *ope = property->data;
- bool should_be_master = ope->type == htons(0xffff);
- if (should_be_master != ap->master) {
- VLOG_WARN_RL(&bad_ofmsg_rl, "async property type %#"PRIx16" "
- "indicates %s role but exp_type %"PRIu32" indicates "
- "%s role",
- ntohs(ope->type),
- should_be_master ? "master" : "slave",
- ntohl(ope->exp_type),
- ap->master ? "master" : "slave");
- return OFPERR_OFPBPC_BAD_EXP_TYPE;
- }
- }
-
- return decode_async_mask(mask, ap, version, loose, ac);
-}
-
-static void
-decode_legacy_async_masks(const ovs_be32 masks[2],
- enum ofputil_async_msg_type oam,
- enum ofp_version version,
- struct ofputil_async_cfg *dst)
-{
- for (int i = 0; i < 2; i++) {
- bool master = i == 0;
- const struct ofp14_async_prop *ap
- = get_ofp14_async_config_prop_by_oam(oam, master);
- decode_async_mask(masks[i], ap, version, true, dst);
- }
-}
-
-/* Decodes the OpenFlow "set async config" request and "get async config
- * reply" message in '*oh' into an abstract form in 'ac'.
- *
- * Some versions of the "set async config" request change only some of the
- * settings and leave the others alone. This function uses 'basis' as the
- * initial state for decoding these. Other versions of the request change all
- * the settings; this function ignores 'basis' when decoding these.
- *
- * If 'loose' is true, this function ignores properties and values that it does
- * not understand, as a controller would want to do when interpreting
- * capabilities provided by a switch. If 'loose' is false, this function
- * treats unknown properties and values as an error, as a switch would want to
- * do when interpreting a configuration request made by a controller.
- *
- * Returns 0 if successful, otherwise an OFPERR_* value.
- *
- * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
- * the valid range of mask.
- *
- * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
- * supported.*/
-enum ofperr
-ofputil_decode_set_async_config(const struct ofp_header *oh, bool loose,
- const struct ofputil_async_cfg *basis,
- struct ofputil_async_cfg *ac)
-{
- struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
- enum ofpraw raw = ofpraw_pull_assert(&b);
-
- if (raw == OFPRAW_OFPT13_SET_ASYNC ||
- raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
- raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
- const struct nx_async_config *msg = ofpmsg_body(oh);
-
- *ac = OFPUTIL_ASYNC_CFG_INIT;
- decode_legacy_async_masks(msg->packet_in_mask, OAM_PACKET_IN,
- oh->version, ac);
- decode_legacy_async_masks(msg->port_status_mask, OAM_PORT_STATUS,
- oh->version, ac);
- decode_legacy_async_masks(msg->flow_removed_mask, OAM_FLOW_REMOVED,
- oh->version, ac);
- } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
- raw == OFPRAW_OFPT14_GET_ASYNC_REPLY ||
- raw == OFPRAW_NXT_SET_ASYNC_CONFIG2) {
- *ac = *basis;
- while (b.size > 0) {
- struct ofpbuf property;
- enum ofperr error;
- uint64_t type;
-
- error = ofpprop_pull__(&b, &property, 8, 0xfffe, &type);
- if (error) {
- return error;
- }
-
- const struct ofp14_async_prop *ap
- = get_ofp14_async_config_prop_by_prop_type(type);
- error = (ap
- ? parse_async_tlv(&property, ap, ac, oh->version, loose)
- : OFPPROP_UNKNOWN(loose, "async config", type));
- if (error) {
- /* Most messages use OFPBPC_BAD_TYPE but async has its own (who
- * knows why, it's OpenFlow. */
- if (error == OFPERR_OFPBPC_BAD_TYPE) {
- error = OFPERR_OFPACFC_UNSUPPORTED;
- }
- return error;
- }
- }
- } else {
- return OFPERR_OFPBRC_BAD_VERSION;
- }
- return 0;
-}
-
-static void
-encode_legacy_async_masks(const struct ofputil_async_cfg *ac,
- enum ofputil_async_msg_type oam,
- enum ofp_version version,
- ovs_be32 masks[2])
-{
- for (int i = 0; i < 2; i++) {
- bool master = i == 0;
- const struct ofp14_async_prop *ap
- = get_ofp14_async_config_prop_by_oam(oam, master);
- masks[i] = encode_async_mask(ac, ap, version);
- }
-}
-
-static void
-ofputil_put_async_config__(const struct ofputil_async_cfg *ac,
- struct ofpbuf *buf, bool tlv,
- enum ofp_version version, uint32_t oams)
-{
- if (!tlv) {
- struct nx_async_config *msg = ofpbuf_put_zeros(buf, sizeof *msg);
- encode_legacy_async_masks(ac, OAM_PACKET_IN, version,
- msg->packet_in_mask);
- encode_legacy_async_masks(ac, OAM_PORT_STATUS, version,
- msg->port_status_mask);
- encode_legacy_async_masks(ac, OAM_FLOW_REMOVED, version,
- msg->flow_removed_mask);
- } else {
- FOR_EACH_ASYNC_PROP (ap) {
- if (oams & (1u << ap->oam)) {
- size_t ofs = buf->size;
- ofpprop_put_be32(buf, ap->prop_type,
- encode_async_mask(ac, ap, version));
-
- /* For experimenter properties, we need to use type 0xfffe for
- * master and 0xffff for slaves. */
- if (ofpprop_is_experimenter(ap->prop_type)) {
- struct ofp_prop_experimenter *ope
- = ofpbuf_at_assert(buf, ofs, sizeof *ope);
- ope->type = ap->master ? htons(0xffff) : htons(0xfffe);
- }
- }
- }
- }
-}
-
-/* Encodes and returns a reply to the OFPT_GET_ASYNC_REQUEST in 'oh' that
- * states that the asynchronous message configuration is 'ac'. */
-struct ofpbuf *
-ofputil_encode_get_async_reply(const struct ofp_header *oh,
- const struct ofputil_async_cfg *ac)
-{
- struct ofpbuf *buf;
-
- enum ofpraw raw = (oh->version < OFP14_VERSION
- ? OFPRAW_OFPT13_GET_ASYNC_REPLY
- : OFPRAW_OFPT14_GET_ASYNC_REPLY);
- struct ofpbuf *reply = ofpraw_alloc_reply(raw, oh, 0);
- ofputil_put_async_config__(ac, reply,
- raw == OFPRAW_OFPT14_GET_ASYNC_REPLY,
- oh->version, UINT32_MAX);
- return reply;
-
- return buf;
-}
-
-/* Encodes and returns a message, in a format appropriate for OpenFlow version
- * 'ofp_version', that sets the asynchronous message configuration to 'ac'.
- *
- * Specify 'oams' as a bitmap of OAM_* that indicate the asynchronous messages
- * to configure. OF1.0 through OF1.3 can't natively configure a subset of
- * messages, so more messages than requested may be configured. OF1.0 through
- * OF1.3 also can't configure OVS extension OAM_* values, so if 'oam' includes
- * any extensions then this function encodes an Open vSwitch extension message
- * that does support configuring OVS extension OAM_*. */
-struct ofpbuf *
-ofputil_encode_set_async_config(const struct ofputil_async_cfg *ac,
- uint32_t oams, enum ofp_version ofp_version)
-{
- enum ofpraw raw = (ofp_version >= OFP14_VERSION ? OFPRAW_OFPT14_SET_ASYNC
- : oams & OAM_EXTENSIONS ? OFPRAW_NXT_SET_ASYNC_CONFIG2
- : ofp_version >= OFP13_VERSION ? OFPRAW_OFPT13_SET_ASYNC
- : OFPRAW_NXT_SET_ASYNC_CONFIG);
- struct ofpbuf *request = ofpraw_alloc(raw, ofp_version, 0);
- ofputil_put_async_config__(ac, request,
- (raw == OFPRAW_OFPT14_SET_ASYNC ||
- raw == OFPRAW_NXT_SET_ASYNC_CONFIG2),
- ofp_version, oams);
- return request;
-}
-
-struct ofputil_async_cfg
-ofputil_async_cfg_default(enum ofp_version version)
-{
- /* We enable all of the OF1.4 reasons regardless of 'version' because the
- * reasons added in OF1.4 just are just refinements of the OFPR_ACTION
- * introduced in OF1.0, breaking it into more specific categories. When we
- * encode these for earlier OpenFlow versions, we translate them into
- * OFPR_ACTION. */
- uint32_t pin = OFPR14_BITS & ~(1u << OFPR_INVALID_TTL);
- pin |= 1u << OFPR_EXPLICIT_MISS;
- if (version <= OFP12_VERSION) {
- pin |= 1u << OFPR_IMPLICIT_MISS;
- }
-
- return (struct ofputil_async_cfg) {
- .master[OAM_PACKET_IN] = pin,
-
- .master[OAM_FLOW_REMOVED]
- = (version >= OFP14_VERSION ? OFPRR14_BITS : OFPRR10_BITS),
-
- .master[OAM_PORT_STATUS] = OFPPR_BITS,
- .slave[OAM_PORT_STATUS] = OFPPR_BITS,
- };
-}
-
-static void
-ofputil_put_ofp14_table_desc(const struct ofputil_table_desc *td,
- struct ofpbuf *b, enum ofp_version version)
-{
- struct ofp14_table_desc *otd;
- struct ofp14_table_mod_prop_vacancy *otv;
- size_t start_otd;
-
- start_otd = b->size;
- ofpbuf_put_zeros(b, sizeof *otd);
-
- ofpprop_put_u32(b, OFPTMPT14_EVICTION, td->eviction_flags);
-
- otv = ofpbuf_put_zeros(b, sizeof *otv);
- otv->type = htons(OFPTMPT14_VACANCY);
- otv->length = htons(sizeof *otv);
- otv->vacancy_down = td->table_vacancy.vacancy_down;
- otv->vacancy_up = td->table_vacancy.vacancy_up;
- otv->vacancy = td->table_vacancy.vacancy;
-
- otd = ofpbuf_at_assert(b, start_otd, sizeof *otd);
- otd->length = htons(b->size - start_otd);
- otd->table_id = td->table_id;
- otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
- td->eviction, td->vacancy,
- version);
-}
-
-/* Converts the abstract form of a "table status" message in '*ts' into an
- * OpenFlow message suitable for 'protocol', and returns that encoded form in
- * a buffer owned by the caller. */
-struct ofpbuf *
-ofputil_encode_table_status(const struct ofputil_table_status *ts,
- enum ofputil_protocol protocol)
-{
- enum ofp_version version;
- struct ofpbuf *b;
-
- version = ofputil_protocol_to_ofp_version(protocol);
- if (version >= OFP14_VERSION) {
- enum ofpraw raw;
- struct ofp14_table_status *ots;
-
- raw = OFPRAW_OFPT14_TABLE_STATUS;
- b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
- ots = ofpbuf_put_zeros(b, sizeof *ots);
- ots->reason = ts->reason;
- ofputil_put_ofp14_table_desc(&ts->desc, b, version);
- ofpmsg_update_length(b);
- return b;
- } else {
- return NULL;
- }
-}
-
-/* Decodes the OpenFlow "table status" message in '*ots' into an abstract form
- * in '*ts'. Returns 0 if successful, otherwise an OFPERR_* value. */
-enum ofperr
-ofputil_decode_table_status(const struct ofp_header *oh,
- struct ofputil_table_status *ts)
-{
- const struct ofp14_table_status *ots;
- struct ofpbuf b;
- enum ofperr error;
- enum ofpraw raw;
-
- ofpbuf_use_const(&b, oh, ntohs(oh->length));
- raw = ofpraw_pull_assert(&b);
- ots = ofpbuf_pull(&b, sizeof *ots);
-
- if (raw == OFPRAW_OFPT14_TABLE_STATUS) {
- if (ots->reason != OFPTR_VACANCY_DOWN
- && ots->reason != OFPTR_VACANCY_UP) {
- return OFPERR_OFPBPC_BAD_VALUE;
- }
- ts->reason = ots->reason;
-
- error = ofputil_decode_table_desc(&b, &ts->desc, oh->version);
- return error;
- } else {
- return OFPERR_OFPBRC_BAD_VERSION;
- }
-
- return 0;
+ return ofpraw_alloc(type, ofp_version, 0);
}
projects / mirror_ovs.git / blobdiff