/*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
+#include <arpa/inet.h>
#include <config.h>
#include "odp-util.h"
+#include <errno.h>
#include <inttypes.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
#include <stdlib.h>
#include <string.h>
+#include "byte-order.h"
#include "coverage.h"
#include "dynamic-string.h"
#include "flow.h"
+#include "netlink.h"
+#include "ofpbuf.h"
+#include "openvswitch/tunnel.h"
#include "packets.h"
#include "timeval.h"
#include "util.h"
+#include "vlog.h"
-union odp_action *
-odp_actions_add(struct odp_actions *actions, uint16_t type)
+VLOG_DEFINE_THIS_MODULE(odp_util);
+
+/* The interface between userspace and kernel uses an "OVS_*" prefix.
+ * Since this is fairly non-specific for the OVS userspace components,
+ * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
+ * interactions with the datapath.
+ */
+
+static void format_odp_key_attr(const struct nlattr *a, struct ds *ds);
+
+/* Returns one the following for the action with the given OVS_ACTION_ATTR_*
+ * 'type':
+ *
+ * - For an action whose argument has a fixed length, returned that
+ * nonnegative length in bytes.
+ *
+ * - For an action with a variable-length argument, returns -2.
+ *
+ * - For an invalid 'type', returns -1. */
+static int
+odp_action_len(uint16_t type)
{
- union odp_action *a;
- if (actions->n_actions < MAX_ODP_ACTIONS) {
- a = &actions->actions[actions->n_actions++];
- } else {
- COVERAGE_INC(odp_overflow);
- actions->n_actions = MAX_ODP_ACTIONS + 1;
- a = &actions->actions[MAX_ODP_ACTIONS - 1];
+ if (type > OVS_ACTION_ATTR_MAX) {
+ return -1;
+ }
+
+ switch ((enum ovs_action_attr) type) {
+ case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
+ case OVS_ACTION_ATTR_USERSPACE: return -2;
+ case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
+ case OVS_ACTION_ATTR_POP_VLAN: return 0;
+ case OVS_ACTION_ATTR_SET: return -2;
+ case OVS_ACTION_ATTR_SAMPLE: return -2;
+
+ case OVS_ACTION_ATTR_UNSPEC:
+ case __OVS_ACTION_ATTR_MAX:
+ return -1;
}
- memset(a, 0, sizeof *a);
- a->type = type;
- return a;
+
+ return -1;
}
-void
-format_odp_action(struct ds *ds, const union odp_action *a)
+static const char *
+ovs_key_attr_to_string(enum ovs_key_attr attr)
+{
+ static char unknown_attr[3 + INT_STRLEN(unsigned int) + 1];
+
+ switch (attr) {
+ case OVS_KEY_ATTR_UNSPEC: return "unspec";
+ case OVS_KEY_ATTR_ENCAP: return "encap";
+ case OVS_KEY_ATTR_PRIORITY: return "priority";
+ case OVS_KEY_ATTR_TUN_ID: return "tun_id";
+ case OVS_KEY_ATTR_IN_PORT: return "in_port";
+ case OVS_KEY_ATTR_ETHERNET: return "eth";
+ case OVS_KEY_ATTR_VLAN: return "vlan";
+ case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
+ case OVS_KEY_ATTR_IPV4: return "ipv4";
+ case OVS_KEY_ATTR_IPV6: return "ipv6";
+ case OVS_KEY_ATTR_TCP: return "tcp";
+ case OVS_KEY_ATTR_UDP: return "udp";
+ case OVS_KEY_ATTR_ICMP: return "icmp";
+ case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
+ case OVS_KEY_ATTR_ARP: return "arp";
+ case OVS_KEY_ATTR_ND: return "nd";
+
+ case __OVS_KEY_ATTR_MAX:
+ default:
+ snprintf(unknown_attr, sizeof unknown_attr, "key%u",
+ (unsigned int) attr);
+ return unknown_attr;
+ }
+}
+
+static void
+format_generic_odp_action(struct ds *ds, const struct nlattr *a)
+{
+ size_t len = nl_attr_get_size(a);
+
+ ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
+ if (len) {
+ const uint8_t *unspec;
+ unsigned int i;
+
+ unspec = nl_attr_get(a);
+ for (i = 0; i < len; i++) {
+ ds_put_char(ds, i ? ' ': '(');
+ ds_put_format(ds, "%02x", unspec[i]);
+ }
+ ds_put_char(ds, ')');
+ }
+}
+
+static void
+format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
+{
+ static const struct nl_policy ovs_sample_policy[] = {
+ [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
+ [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
+ };
+ struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
+ double percentage;
+ const struct nlattr *nla_acts;
+ int len;
+
+ ds_put_cstr(ds, "sample");
+
+ if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
+ ds_put_cstr(ds, "(error)");
+ return;
+ }
+
+ percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
+ UINT32_MAX;
+
+ ds_put_format(ds, "(sample=%.1f%%,", percentage);
+
+ ds_put_cstr(ds, "actions(");
+ nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
+ len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
+ format_odp_actions(ds, nla_acts, len);
+ ds_put_format(ds, "))");
+}
+
+static void
+format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
+{
+ static const struct nl_policy ovs_userspace_policy[] = {
+ [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
+ [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true },
+ };
+ struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
+
+ if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
+ ds_put_cstr(ds, "userspace(error)");
+ return;
+ }
+
+ ds_put_format(ds, "userspace(pid=%"PRIu32,
+ nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
+
+ if (a[OVS_USERSPACE_ATTR_USERDATA]) {
+ uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]);
+ struct user_action_cookie cookie;
+
+ memcpy(&cookie, &userdata, sizeof cookie);
+
+ if (cookie.type == USER_ACTION_COOKIE_CONTROLLER) {
+ ds_put_format(ds, ",controller,length=%"PRIu32,
+ cookie.data);
+ } else if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
+ ds_put_format(ds, ",sFlow,n_output=%"PRIu8","
+ "vid=%"PRIu16",pcp=%"PRIu8",ifindex=%"PRIu32,
+ cookie.n_output, vlan_tci_to_vid(cookie.vlan_tci),
+ vlan_tci_to_pcp(cookie.vlan_tci), cookie.data);
+ } else {
+ ds_put_format(ds, ",userdata=0x%"PRIx64, userdata);
+ }
+ }
+
+ ds_put_char(ds, ')');
+}
+
+static void
+format_odp_action(struct ds *ds, const struct nlattr *a)
{
- switch (a->type) {
- case ODPAT_OUTPUT:
- ds_put_format(ds, "%"PRIu16, a->output.port);
+ int expected_len;
+ enum ovs_action_attr type = nl_attr_type(a);
+ const struct ovs_action_push_vlan *vlan;
+
+ expected_len = odp_action_len(nl_attr_type(a));
+ if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
+ ds_put_format(ds, "bad length %zu, expected %d for: ",
+ nl_attr_get_size(a), expected_len);
+ format_generic_odp_action(ds, a);
+ return;
+ }
+
+ switch (type) {
+ case OVS_ACTION_ATTR_OUTPUT:
+ ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a));
+ break;
+ case OVS_ACTION_ATTR_USERSPACE:
+ format_odp_userspace_action(ds, a);
+ break;
+ case OVS_ACTION_ATTR_SET:
+ ds_put_cstr(ds, "set(");
+ format_odp_key_attr(nl_attr_get(a), ds);
+ ds_put_cstr(ds, ")");
break;
- case ODPAT_OUTPUT_GROUP:
- ds_put_format(ds, "g%"PRIu16, a->output_group.group);
+ case OVS_ACTION_ATTR_PUSH_VLAN:
+ vlan = nl_attr_get(a);
+ ds_put_cstr(ds, "push_vlan(");
+ if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
+ ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
+ }
+ ds_put_format(ds, "vid=%"PRIu16",pcp=%d)",
+ vlan_tci_to_vid(vlan->vlan_tci),
+ vlan_tci_to_pcp(vlan->vlan_tci));
+ break;
+ case OVS_ACTION_ATTR_POP_VLAN:
+ ds_put_cstr(ds, "pop_vlan");
+ break;
+ case OVS_ACTION_ATTR_SAMPLE:
+ format_odp_sample_action(ds, a);
+ break;
+ case OVS_ACTION_ATTR_UNSPEC:
+ case __OVS_ACTION_ATTR_MAX:
+ default:
+ format_generic_odp_action(ds, a);
+ break;
+ }
+}
+
+void
+format_odp_actions(struct ds *ds, const struct nlattr *actions,
+ size_t actions_len)
+{
+ if (actions_len) {
+ const struct nlattr *a;
+ unsigned int left;
+
+ NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
+ if (a != actions) {
+ ds_put_char(ds, ',');
+ }
+ format_odp_action(ds, a);
+ }
+ if (left) {
+ if (left == actions_len) {
+ ds_put_cstr(ds, "<empty>");
+ }
+ ds_put_format(ds, ",***%u leftover bytes***", left);
+ }
+ } else {
+ ds_put_cstr(ds, "drop");
+ }
+}
+\f
+/* Returns the correct length of the payload for a flow key attribute of the
+ * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
+ * is variable length. */
+static int
+odp_flow_key_attr_len(uint16_t type)
+{
+ if (type > OVS_KEY_ATTR_MAX) {
+ return -1;
+ }
+
+ switch ((enum ovs_key_attr) type) {
+ case OVS_KEY_ATTR_ENCAP: return -2;
+ case OVS_KEY_ATTR_PRIORITY: return 4;
+ case OVS_KEY_ATTR_TUN_ID: return 8;
+ case OVS_KEY_ATTR_IN_PORT: return 4;
+ case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
+ case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
+ case OVS_KEY_ATTR_ETHERTYPE: return 2;
+ case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
+ case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
+ case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
+ case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
+ case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
+ case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
+ case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
+ case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
+
+ case OVS_KEY_ATTR_UNSPEC:
+ case __OVS_KEY_ATTR_MAX:
+ return -1;
+ }
+
+ return -1;
+}
+
+static void
+format_generic_odp_key(const struct nlattr *a, struct ds *ds)
+{
+ size_t len = nl_attr_get_size(a);
+ if (len) {
+ const uint8_t *unspec;
+ unsigned int i;
+
+ unspec = nl_attr_get(a);
+ for (i = 0; i < len; i++) {
+ ds_put_char(ds, i ? ' ': '(');
+ ds_put_format(ds, "%02x", unspec[i]);
+ }
+ ds_put_char(ds, ')');
+ }
+}
+
+static const char *
+ovs_frag_type_to_string(enum ovs_frag_type type)
+{
+ switch (type) {
+ case OVS_FRAG_TYPE_NONE:
+ return "no";
+ case OVS_FRAG_TYPE_FIRST:
+ return "first";
+ case OVS_FRAG_TYPE_LATER:
+ return "later";
+ case __OVS_FRAG_TYPE_MAX:
+ default:
+ return "<error>";
+ }
+}
+
+static void
+format_odp_key_attr(const struct nlattr *a, struct ds *ds)
+{
+ const struct ovs_key_ethernet *eth_key;
+ const struct ovs_key_ipv4 *ipv4_key;
+ const struct ovs_key_ipv6 *ipv6_key;
+ const struct ovs_key_tcp *tcp_key;
+ const struct ovs_key_udp *udp_key;
+ const struct ovs_key_icmp *icmp_key;
+ const struct ovs_key_icmpv6 *icmpv6_key;
+ const struct ovs_key_arp *arp_key;
+ const struct ovs_key_nd *nd_key;
+ enum ovs_key_attr attr = nl_attr_type(a);
+ int expected_len;
+
+ ds_put_cstr(ds, ovs_key_attr_to_string(attr));
+ expected_len = odp_flow_key_attr_len(nl_attr_type(a));
+ if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
+ ds_put_format(ds, "(bad length %zu, expected %d)",
+ nl_attr_get_size(a),
+ odp_flow_key_attr_len(nl_attr_type(a)));
+ format_generic_odp_key(a, ds);
+ return;
+ }
+
+ switch (attr) {
+ case OVS_KEY_ATTR_ENCAP:
+ ds_put_cstr(ds, "(");
+ if (nl_attr_get_size(a)) {
+ odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds);
+ }
+ ds_put_char(ds, ')');
break;
- case ODPAT_CONTROLLER:
- ds_put_format(ds, "ctl(%"PRIu32")", a->controller.arg);
+
+ case OVS_KEY_ATTR_PRIORITY:
+ ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
break;
- case ODPAT_SET_TUNNEL:
- ds_put_format(ds, "set_tunnel(0x%08"PRIx32")", ntohl(a->tunnel.tun_id));
+
+ case OVS_KEY_ATTR_TUN_ID:
+ ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a)));
break;
- case ODPAT_SET_VLAN_VID:
- ds_put_format(ds, "set_vlan(%"PRIu16")", ntohs(a->vlan_vid.vlan_vid));
+
+ case OVS_KEY_ATTR_IN_PORT:
+ ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
break;
- case ODPAT_SET_VLAN_PCP:
- ds_put_format(ds, "set_vlan_pcp(%"PRIu8")", a->vlan_pcp.vlan_pcp);
+
+ case OVS_KEY_ATTR_ETHERNET:
+ eth_key = nl_attr_get(a);
+ ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")",
+ ETH_ADDR_ARGS(eth_key->eth_src),
+ ETH_ADDR_ARGS(eth_key->eth_dst));
break;
- case ODPAT_STRIP_VLAN:
- ds_put_format(ds, "strip_vlan");
+
+ case OVS_KEY_ATTR_VLAN:
+ ds_put_format(ds, "(vid=%"PRIu16",pcp=%d)",
+ vlan_tci_to_vid(nl_attr_get_be16(a)),
+ vlan_tci_to_pcp(nl_attr_get_be16(a)));
break;
- case ODPAT_SET_DL_SRC:
- ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")",
- ETH_ADDR_ARGS(a->dl_addr.dl_addr));
+
+ case OVS_KEY_ATTR_ETHERTYPE:
+ ds_put_format(ds, "(0x%04"PRIx16")",
+ ntohs(nl_attr_get_be16(a)));
break;
- case ODPAT_SET_DL_DST:
- ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")",
- ETH_ADDR_ARGS(a->dl_addr.dl_addr));
+
+ case OVS_KEY_ATTR_IPV4:
+ ipv4_key = nl_attr_get(a);
+ ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
+ ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)",
+ IP_ARGS(&ipv4_key->ipv4_src),
+ IP_ARGS(&ipv4_key->ipv4_dst),
+ ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
+ ipv4_key->ipv4_ttl,
+ ovs_frag_type_to_string(ipv4_key->ipv4_frag));
break;
- case ODPAT_SET_NW_SRC:
- ds_put_format(ds, "set_nw_src("IP_FMT")",
- IP_ARGS(&a->nw_addr.nw_addr));
+
+ case OVS_KEY_ATTR_IPV6: {
+ char src_str[INET6_ADDRSTRLEN];
+ char dst_str[INET6_ADDRSTRLEN];
+
+ ipv6_key = nl_attr_get(a);
+ inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
+ inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
+
+ ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
+ ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)",
+ src_str, dst_str, ntohl(ipv6_key->ipv6_label),
+ ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
+ ipv6_key->ipv6_hlimit,
+ ovs_frag_type_to_string(ipv6_key->ipv6_frag));
break;
- case ODPAT_SET_NW_DST:
- ds_put_format(ds, "set_nw_dst("IP_FMT")",
- IP_ARGS(&a->nw_addr.nw_addr));
+ }
+
+ case OVS_KEY_ATTR_TCP:
+ tcp_key = nl_attr_get(a);
+ ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
+ ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
break;
- case ODPAT_SET_NW_TOS:
- ds_put_format(ds, "set_nw_tos(%"PRIu8")", a->nw_tos.nw_tos);
+
+ case OVS_KEY_ATTR_UDP:
+ udp_key = nl_attr_get(a);
+ ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
+ ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
break;
- case ODPAT_SET_TP_SRC:
- ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port));
+
+ case OVS_KEY_ATTR_ICMP:
+ icmp_key = nl_attr_get(a);
+ ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
+ icmp_key->icmp_type, icmp_key->icmp_code);
break;
- case ODPAT_SET_TP_DST:
- ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port));
+
+ case OVS_KEY_ATTR_ICMPV6:
+ icmpv6_key = nl_attr_get(a);
+ ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
+ icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
break;
- case ODPAT_SET_PRIORITY:
- ds_put_format(ds, "set_priority(0x%"PRIx32")", a->priority.priority);
+
+ case OVS_KEY_ATTR_ARP:
+ arp_key = nl_attr_get(a);
+ ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
+ "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")",
+ IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip),
+ ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha),
+ ETH_ADDR_ARGS(arp_key->arp_tha));
break;
- case ODPAT_POP_PRIORITY:
- ds_put_cstr(ds, "pop_priority");
+
+ case OVS_KEY_ATTR_ND: {
+ char target[INET6_ADDRSTRLEN];
+
+ nd_key = nl_attr_get(a);
+ inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
+
+ ds_put_format(ds, "(target=%s", target);
+ if (!eth_addr_is_zero(nd_key->nd_sll)) {
+ ds_put_format(ds, ",sll="ETH_ADDR_FMT,
+ ETH_ADDR_ARGS(nd_key->nd_sll));
+ }
+ if (!eth_addr_is_zero(nd_key->nd_tll)) {
+ ds_put_format(ds, ",tll="ETH_ADDR_FMT,
+ ETH_ADDR_ARGS(nd_key->nd_tll));
+ }
+ ds_put_char(ds, ')');
break;
+ }
+
+ case OVS_KEY_ATTR_UNSPEC:
+ case __OVS_KEY_ATTR_MAX:
default:
- ds_put_format(ds, "***bad action 0x%"PRIx16"***", a->type);
+ format_generic_odp_key(a, ds);
break;
}
}
+/* Appends to 'ds' a string representation of the 'key_len' bytes of
+ * OVS_KEY_ATTR_* attributes in 'key'. */
void
-format_odp_actions(struct ds *ds, const union odp_action *actions,
- size_t n_actions)
+odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds)
{
- size_t i;
- for (i = 0; i < n_actions; i++) {
- if (i) {
- ds_put_char(ds, ',');
+ if (key_len) {
+ const struct nlattr *a;
+ unsigned int left;
+
+ NL_ATTR_FOR_EACH (a, left, key, key_len) {
+ if (a != key) {
+ ds_put_char(ds, ',');
+ }
+ format_odp_key_attr(a, ds);
}
- format_odp_action(ds, &actions[i]);
+ if (left) {
+ if (left == key_len) {
+ ds_put_cstr(ds, "<empty>");
+ }
+ ds_put_format(ds, ",***%u leftover bytes***", left);
+ }
+ } else {
+ ds_put_cstr(ds, "<empty>");
}
- if (!n_actions) {
- ds_put_cstr(ds, "drop");
+}
+
+static int
+put_nd_key(int n, const char *nd_target_s,
+ const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
+{
+ struct ovs_key_nd nd_key;
+
+ memset(&nd_key, 0, sizeof nd_key);
+ if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
+ return -EINVAL;
}
+ if (nd_sll) {
+ memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
+ }
+ if (nd_tll) {
+ memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
+ }
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
+ return n;
}
-void
-format_odp_flow_stats(struct ds *ds, const struct odp_flow_stats *s)
-{
- ds_put_format(ds, "packets:%llu, bytes:%llu, used:",
- (unsigned long long int) s->n_packets,
- (unsigned long long int) s->n_bytes);
- if (s->used_sec) {
- long long int used = s->used_sec * 1000 + s->used_nsec / 1000000;
- ds_put_format(ds, "%.3fs", (time_msec() - used) / 1000.0);
+static bool
+ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
+{
+ if (!strcasecmp(s, "no")) {
+ *type = OVS_FRAG_TYPE_NONE;
+ } else if (!strcasecmp(s, "first")) {
+ *type = OVS_FRAG_TYPE_FIRST;
+ } else if (!strcasecmp(s, "later")) {
+ *type = OVS_FRAG_TYPE_LATER;
} else {
- ds_put_format(ds, "never");
+ return false;
+ }
+ return true;
+}
+
+static int
+parse_odp_key_attr(const char *s, struct ofpbuf *key)
+{
+ /* Many of the sscanf calls in this function use oversized destination
+ * fields because some sscanf() implementations truncate the range of %i
+ * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
+ * value of 0x7fff. The other alternatives are to allow only a single
+ * radix (e.g. decimal or hexadecimal) or to write more sophisticated
+ * parsers.
+ *
+ * The tun_id parser has to use an alternative approach because there is no
+ * type larger than 64 bits. */
+
+ {
+ unsigned long long int priority;
+ int n = -1;
+
+ if (sscanf(s, "priority(%lli)%n", &priority, &n) > 0 && n > 0) {
+ nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
+ return n;
+ }
+ }
+
+ {
+ char tun_id_s[32];
+ int n = -1;
+
+ if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
+ tun_id_s, &n) > 0 && n > 0) {
+ uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
+ nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id));
+ return n;
+ }
+ }
+
+ {
+ unsigned long long int in_port;
+ int n = -1;
+
+ if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
+ nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
+ return n;
+ }
+ }
+
+ {
+ struct ovs_key_ethernet eth_key;
+ int n = -1;
+
+ if (sscanf(s,
+ "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
+ ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
+ ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
+ ð_key, sizeof eth_key);
+ return n;
+ }
+ }
+
+ {
+ uint16_t vid;
+ int pcp;
+ int n = -1;
+
+ if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0
+ && n > 0)) {
+ nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
+ htons((vid << VLAN_VID_SHIFT) |
+ (pcp << VLAN_PCP_SHIFT)));
+ return n;
+ }
+ }
+
+ {
+ int eth_type;
+ int n = -1;
+
+ if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) {
+ nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
+ return n;
+ }
+ }
+
+ {
+ ovs_be32 ipv4_src;
+ ovs_be32 ipv4_dst;
+ int ipv4_proto;
+ int ipv4_tos;
+ int ipv4_ttl;
+ char frag[8];
+ enum ovs_frag_type ipv4_frag;
+ int n = -1;
+
+ if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
+ "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
+ IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
+ &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
+ && n > 0
+ && ovs_frag_type_from_string(frag, &ipv4_frag)) {
+ struct ovs_key_ipv4 ipv4_key;
+
+ ipv4_key.ipv4_src = ipv4_src;
+ ipv4_key.ipv4_dst = ipv4_dst;
+ ipv4_key.ipv4_proto = ipv4_proto;
+ ipv4_key.ipv4_tos = ipv4_tos;
+ ipv4_key.ipv4_ttl = ipv4_ttl;
+ ipv4_key.ipv4_frag = ipv4_frag;
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
+ &ipv4_key, sizeof ipv4_key);
+ return n;
+ }
+ }
+
+ {
+ char ipv6_src_s[IPV6_SCAN_LEN + 1];
+ char ipv6_dst_s[IPV6_SCAN_LEN + 1];
+ int ipv6_label;
+ int ipv6_proto;
+ int ipv6_tclass;
+ int ipv6_hlimit;
+ char frag[8];
+ enum ovs_frag_type ipv6_frag;
+ int n = -1;
+
+ if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
+ "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
+ ipv6_src_s, ipv6_dst_s, &ipv6_label,
+ &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
+ && n > 0
+ && ovs_frag_type_from_string(frag, &ipv6_frag)) {
+ struct ovs_key_ipv6 ipv6_key;
+
+ if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
+ inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
+ return -EINVAL;
+ }
+ ipv6_key.ipv6_label = htonl(ipv6_label);
+ ipv6_key.ipv6_proto = ipv6_proto;
+ ipv6_key.ipv6_tclass = ipv6_tclass;
+ ipv6_key.ipv6_hlimit = ipv6_hlimit;
+ ipv6_key.ipv6_frag = ipv6_frag;
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
+ &ipv6_key, sizeof ipv6_key);
+ return n;
+ }
+ }
+
+ {
+ int tcp_src;
+ int tcp_dst;
+ int n = -1;
+
+ if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
+ && n > 0) {
+ struct ovs_key_tcp tcp_key;
+
+ tcp_key.tcp_src = htons(tcp_src);
+ tcp_key.tcp_dst = htons(tcp_dst);
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
+ return n;
+ }
+ }
+
+ {
+ int udp_src;
+ int udp_dst;
+ int n = -1;
+
+ if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
+ && n > 0) {
+ struct ovs_key_udp udp_key;
+
+ udp_key.udp_src = htons(udp_src);
+ udp_key.udp_dst = htons(udp_dst);
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
+ return n;
+ }
+ }
+
+ {
+ int icmp_type;
+ int icmp_code;
+ int n = -1;
+
+ if (sscanf(s, "icmp(type=%i,code=%i)%n",
+ &icmp_type, &icmp_code, &n) > 0
+ && n > 0) {
+ struct ovs_key_icmp icmp_key;
+
+ icmp_key.icmp_type = icmp_type;
+ icmp_key.icmp_code = icmp_code;
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
+ &icmp_key, sizeof icmp_key);
+ return n;
+ }
+ }
+
+ {
+ struct ovs_key_icmpv6 icmpv6_key;
+ int n = -1;
+
+ if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
+ &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
+ && n > 0) {
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
+ &icmpv6_key, sizeof icmpv6_key);
+ return n;
+ }
+ }
+
+ {
+ ovs_be32 arp_sip;
+ ovs_be32 arp_tip;
+ int arp_op;
+ uint8_t arp_sha[ETH_ADDR_LEN];
+ uint8_t arp_tha[ETH_ADDR_LEN];
+ int n = -1;
+
+ if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
+ "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
+ IP_SCAN_ARGS(&arp_sip),
+ IP_SCAN_ARGS(&arp_tip),
+ &arp_op,
+ ETH_ADDR_SCAN_ARGS(arp_sha),
+ ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
+ struct ovs_key_arp arp_key;
+
+ memset(&arp_key, 0, sizeof arp_key);
+ arp_key.arp_sip = arp_sip;
+ arp_key.arp_tip = arp_tip;
+ arp_key.arp_op = htons(arp_op);
+ memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
+ memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
+ nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
+ return n;
+ }
+ }
+
+ {
+ char nd_target_s[IPV6_SCAN_LEN + 1];
+ uint8_t nd_sll[ETH_ADDR_LEN];
+ uint8_t nd_tll[ETH_ADDR_LEN];
+ int n = -1;
+
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
+ nd_target_s, &n) > 0 && n > 0) {
+ return put_nd_key(n, nd_target_s, NULL, NULL, key);
+ }
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
+ nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
+ && n > 0) {
+ return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
+ }
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
+ nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
+ && n > 0) {
+ return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
+ }
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
+ "tll="ETH_ADDR_SCAN_FMT")%n",
+ nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
+ ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
+ && n > 0) {
+ return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
+ }
+ }
+
+ if (!strncmp(s, "encap(", 6)) {
+ const char *start = s;
+ size_t encap;
+
+ encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
+
+ s += 6;
+ for (;;) {
+ int retval;
+
+ s += strspn(s, ", \t\r\n");
+ if (!*s) {
+ return -EINVAL;
+ } else if (*s == ')') {
+ break;
+ }
+
+ retval = parse_odp_key_attr(s, key);
+ if (retval < 0) {
+ return retval;
+ }
+ s += retval;
+ }
+ s++;
+
+ nl_msg_end_nested(key, encap);
+
+ return s - start;
+ }
+
+ return -EINVAL;
+}
+
+/* Parses the string representation of a datapath flow key, in the
+ * format output by odp_flow_key_format(). Returns 0 if successful,
+ * otherwise a positive errno value. On success, the flow key is
+ * appended to 'key' as a series of Netlink attributes. On failure, no
+ * data is appended to 'key'. Either way, 'key''s data might be
+ * reallocated.
+ *
+ * On success, the attributes appended to 'key' are individually syntactically
+ * valid, but they may not be valid as a sequence. 'key' might, for example,
+ * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
+int
+odp_flow_key_from_string(const char *s, struct ofpbuf *key)
+{
+ const size_t old_size = key->size;
+ for (;;) {
+ int retval;
+
+ s += strspn(s, ", \t\r\n");
+ if (!*s) {
+ return 0;
+ }
+
+ retval = parse_odp_key_attr(s, key);
+ if (retval < 0) {
+ key->size = old_size;
+ return -retval;
+ }
+ s += retval;
}
+
+ return 0;
+}
+
+static uint8_t
+ovs_to_odp_frag(uint8_t ovs_frag)
+{
+ return (ovs_frag & FLOW_NW_FRAG_LATER ? OVS_FRAG_TYPE_LATER
+ : ovs_frag & FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
+ : OVS_FRAG_TYPE_NONE);
}
+/* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'. */
void
-format_odp_flow(struct ds *ds, const struct odp_flow *f)
+odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow)
+{
+ struct ovs_key_ethernet *eth_key;
+ size_t encap;
+
+ if (flow->priority) {
+ nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->priority);
+ }
+
+ if (flow->tun_id != htonll(0)) {
+ nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tun_id);
+ }
+
+ if (flow->in_port != OFPP_NONE) {
+ nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT,
+ ofp_port_to_odp_port(flow->in_port));
+ }
+
+ eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
+ sizeof *eth_key);
+ memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN);
+ memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN);
+
+ if (flow->vlan_tci != htons(0)) {
+ nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
+ nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN,
+ flow->vlan_tci & ~htons(VLAN_CFI));
+ encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
+ } else {
+ encap = 0;
+ }
+
+ if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
+ goto unencap;
+ }
+
+ nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type);
+
+ if (flow->dl_type == htons(ETH_TYPE_IP)) {
+ struct ovs_key_ipv4 *ipv4_key;
+
+ ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
+ sizeof *ipv4_key);
+ ipv4_key->ipv4_src = flow->nw_src;
+ ipv4_key->ipv4_dst = flow->nw_dst;
+ ipv4_key->ipv4_proto = flow->nw_proto;
+ ipv4_key->ipv4_tos = flow->nw_tos;
+ ipv4_key->ipv4_ttl = flow->nw_ttl;
+ ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag);
+ } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
+ struct ovs_key_ipv6 *ipv6_key;
+
+ ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
+ sizeof *ipv6_key);
+ memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src);
+ memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst);
+ ipv6_key->ipv6_label = flow->ipv6_label;
+ ipv6_key->ipv6_proto = flow->nw_proto;
+ ipv6_key->ipv6_tclass = flow->nw_tos;
+ ipv6_key->ipv6_hlimit = flow->nw_ttl;
+ ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
+ } else if (flow->dl_type == htons(ETH_TYPE_ARP)) {
+ struct ovs_key_arp *arp_key;
+
+ arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
+ sizeof *arp_key);
+ memset(arp_key, 0, sizeof *arp_key);
+ arp_key->arp_sip = flow->nw_src;
+ arp_key->arp_tip = flow->nw_dst;
+ arp_key->arp_op = htons(flow->nw_proto);
+ memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
+ memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
+ }
+
+ if ((flow->dl_type == htons(ETH_TYPE_IP)
+ || flow->dl_type == htons(ETH_TYPE_IPV6))
+ && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
+
+ if (flow->nw_proto == IPPROTO_TCP) {
+ struct ovs_key_tcp *tcp_key;
+
+ tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
+ sizeof *tcp_key);
+ tcp_key->tcp_src = flow->tp_src;
+ tcp_key->tcp_dst = flow->tp_dst;
+ } else if (flow->nw_proto == IPPROTO_UDP) {
+ struct ovs_key_udp *udp_key;
+
+ udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
+ sizeof *udp_key);
+ udp_key->udp_src = flow->tp_src;
+ udp_key->udp_dst = flow->tp_dst;
+ } else if (flow->dl_type == htons(ETH_TYPE_IP)
+ && flow->nw_proto == IPPROTO_ICMP) {
+ struct ovs_key_icmp *icmp_key;
+
+ icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
+ sizeof *icmp_key);
+ icmp_key->icmp_type = ntohs(flow->tp_src);
+ icmp_key->icmp_code = ntohs(flow->tp_dst);
+ } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
+ && flow->nw_proto == IPPROTO_ICMPV6) {
+ struct ovs_key_icmpv6 *icmpv6_key;
+
+ icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
+ sizeof *icmpv6_key);
+ icmpv6_key->icmpv6_type = ntohs(flow->tp_src);
+ icmpv6_key->icmpv6_code = ntohs(flow->tp_dst);
+
+ if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
+ || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
+ struct ovs_key_nd *nd_key;
+
+ nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
+ sizeof *nd_key);
+ memcpy(nd_key->nd_target, &flow->nd_target,
+ sizeof nd_key->nd_target);
+ memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN);
+ memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN);
+ }
+ }
+ }
+
+unencap:
+ if (encap) {
+ nl_msg_end_nested(buf, encap);
+ }
+}
+
+static void
+log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
+ uint32_t attrs,
+ const struct nlattr *key, size_t key_len)
+{
+ struct ds s;
+ int i;
+
+ if (VLOG_DROP_WARN(rl)) {
+ return;
+ }
+
+ ds_init(&s);
+ ds_put_format(&s, "%s:", title);
+ for (i = 0; i < 32; i++) {
+ if (attrs & (1u << i)) {
+ ds_put_format(&s, " %s", ovs_key_attr_to_string(i));
+ }
+ }
+
+ ds_put_cstr(&s, ": ");
+ odp_flow_key_format(key, key_len, &s);
+
+ VLOG_WARN("%s", ds_cstr(&s));
+ ds_destroy(&s);
+}
+
+static bool
+odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+ if (odp_frag > OVS_FRAG_TYPE_LATER) {
+ VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key",
+ odp_frag);
+ return false;
+ }
+
+ if (odp_frag != OVS_FRAG_TYPE_NONE) {
+ flow->nw_frag |= FLOW_NW_FRAG_ANY;
+ if (odp_frag == OVS_FRAG_TYPE_LATER) {
+ flow->nw_frag |= FLOW_NW_FRAG_LATER;
+ }
+ }
+ return true;
+}
+
+static int
+parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
+ const struct nlattr *attrs[], uint64_t *present_attrsp)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ const struct nlattr *nla;
+ uint64_t present_attrs;
+ size_t left;
+
+ present_attrs = 0;
+ NL_ATTR_FOR_EACH (nla, left, key, key_len) {
+ uint16_t type = nl_attr_type(nla);
+ size_t len = nl_attr_get_size(nla);
+ int expected_len = odp_flow_key_attr_len(type);
+
+ if (len != expected_len && expected_len != -2) {
+ if (expected_len == -1) {
+ VLOG_ERR_RL(&rl, "unknown attribute %"PRIu16" in flow key",
+ type);
+ } else {
+ VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
+ "length %d", ovs_key_attr_to_string(type),
+ len, expected_len);
+ }
+ return EINVAL;
+ } else if (present_attrs & (UINT64_C(1) << type)) {
+ VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
+ ovs_key_attr_to_string(type));
+ return EINVAL;
+ }
+
+ present_attrs |= UINT64_C(1) << type;
+ attrs[type] = nla;
+ }
+ if (left) {
+ VLOG_ERR_RL(&rl, "trailing garbage in flow key");
+ return EINVAL;
+ }
+
+ *present_attrsp = present_attrs;
+ return 0;
+}
+
+static int
+check_expectations(uint64_t present_attrs, uint64_t expected_attrs,
+ const struct nlattr *key, size_t key_len)
{
- flow_format(ds, &f->key);
- ds_put_cstr(ds, ", ");
- format_odp_flow_stats(ds, &f->stats);
- ds_put_cstr(ds, ", actions:");
- format_odp_actions(ds, f->actions, f->n_actions);
+ uint64_t missing_attrs;
+ uint64_t extra_attrs;
+
+ missing_attrs = expected_attrs & ~present_attrs;
+ if (missing_attrs) {
+ static struct vlog_rate_limit miss_rl = VLOG_RATE_LIMIT_INIT(10, 10);
+ log_odp_key_attributes(&miss_rl, "expected but not present",
+ missing_attrs, key, key_len);
+ return EINVAL;
+ }
+
+ extra_attrs = present_attrs & ~expected_attrs;
+ if (extra_attrs) {
+ static struct vlog_rate_limit extra_rl = VLOG_RATE_LIMIT_INIT(10, 10);
+ log_odp_key_attributes(&extra_rl, "present but not expected",
+ extra_attrs, key, key_len);
+ return EINVAL;
+ }
+
+ return 0;
}
+/* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
+ * structure in 'flow'. Returns 0 if successful, otherwise EINVAL. */
+int
+odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
+ struct flow *flow)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
+ uint64_t expected_attrs;
+ uint64_t present_attrs;
+ int error;
+
+ memset(flow, 0, sizeof *flow);
+
+ error = parse_flow_nlattrs(key, key_len, attrs, &present_attrs);
+ if (error) {
+ return error;
+ }
+
+ expected_attrs = 0;
+
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
+ flow->priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
+ }
+
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) {
+ flow->tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]);
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID;
+ }
+
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
+ uint32_t in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]);
+ if (in_port >= UINT16_MAX || in_port >= OFPP_MAX) {
+ VLOG_ERR_RL(&rl, "in_port %"PRIu32" out of supported range",
+ in_port);
+ return EINVAL;
+ }
+ flow->in_port = odp_port_to_ofp_port(in_port);
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
+ } else {
+ flow->in_port = OFPP_NONE;
+ }
+
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
+ const struct ovs_key_ethernet *eth_key;
+
+ eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
+ memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
+ memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
+ } else {
+ VLOG_ERR_RL(&rl, "missing Ethernet attribute in flow key");
+ return EINVAL;
+ }
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
+
+ if ((present_attrs & ~expected_attrs)
+ == ((UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE) |
+ (UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
+ (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))
+ && (nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE])
+ == htons(ETH_TYPE_VLAN))) {
+ const struct nlattr *encap = attrs[OVS_KEY_ATTR_ENCAP];
+ const struct nlattr *vlan = attrs[OVS_KEY_ATTR_VLAN];
+
+ flow->vlan_tci = nl_attr_get_be16(vlan);
+ if (flow->vlan_tci & htons(VLAN_CFI)) {
+ return EINVAL;
+ }
+ flow->vlan_tci |= htons(VLAN_CFI);
+
+ error = parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
+ attrs, &present_attrs);
+ if (error) {
+ return error;
+ }
+ expected_attrs = 0;
+ }
+
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
+ flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
+ if (ntohs(flow->dl_type) < 1536) {
+ VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
+ ntohs(flow->dl_type));
+ return EINVAL;
+ }
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
+ } else {
+ flow->dl_type = htons(FLOW_DL_TYPE_NONE);
+ }
+
+ if (flow->dl_type == htons(ETH_TYPE_IP)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
+ const struct ovs_key_ipv4 *ipv4_key;
+
+ ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
+ flow->nw_src = ipv4_key->ipv4_src;
+ flow->nw_dst = ipv4_key->ipv4_dst;
+ flow->nw_proto = ipv4_key->ipv4_proto;
+ flow->nw_tos = ipv4_key->ipv4_tos;
+ flow->nw_ttl = ipv4_key->ipv4_ttl;
+ if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
+ return EINVAL;
+ }
+ }
+ } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
+ const struct ovs_key_ipv6 *ipv6_key;
+
+ ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
+ memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
+ memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
+ flow->ipv6_label = ipv6_key->ipv6_label;
+ flow->nw_proto = ipv6_key->ipv6_proto;
+ flow->nw_tos = ipv6_key->ipv6_tclass;
+ flow->nw_ttl = ipv6_key->ipv6_hlimit;
+ if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
+ return EINVAL;
+ }
+ }
+ } else if (flow->dl_type == htons(ETH_TYPE_ARP)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
+ const struct ovs_key_arp *arp_key;
+
+ arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
+ flow->nw_src = arp_key->arp_sip;
+ flow->nw_dst = arp_key->arp_tip;
+ if (arp_key->arp_op & htons(0xff00)) {
+ VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
+ "key", ntohs(arp_key->arp_op));
+ return EINVAL;
+ }
+ flow->nw_proto = ntohs(arp_key->arp_op);
+ memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
+ memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
+ }
+ }
+
+ if (flow->nw_proto == IPPROTO_TCP
+ && (flow->dl_type == htons(ETH_TYPE_IP) ||
+ flow->dl_type == htons(ETH_TYPE_IPV6))
+ && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
+ const struct ovs_key_tcp *tcp_key;
+
+ tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
+ flow->tp_src = tcp_key->tcp_src;
+ flow->tp_dst = tcp_key->tcp_dst;
+ }
+ } else if (flow->nw_proto == IPPROTO_UDP
+ && (flow->dl_type == htons(ETH_TYPE_IP) ||
+ flow->dl_type == htons(ETH_TYPE_IPV6))
+ && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
+ const struct ovs_key_udp *udp_key;
+
+ udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
+ flow->tp_src = udp_key->udp_src;
+ flow->tp_dst = udp_key->udp_dst;
+ }
+ } else if (flow->nw_proto == IPPROTO_ICMP
+ && flow->dl_type == htons(ETH_TYPE_IP)
+ && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
+ const struct ovs_key_icmp *icmp_key;
+
+ icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
+ flow->tp_src = htons(icmp_key->icmp_type);
+ flow->tp_dst = htons(icmp_key->icmp_code);
+ }
+ } else if (flow->nw_proto == IPPROTO_ICMPV6
+ && flow->dl_type == htons(ETH_TYPE_IPV6)
+ && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
+ const struct ovs_key_icmpv6 *icmpv6_key;
+
+ icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
+ flow->tp_src = htons(icmpv6_key->icmpv6_type);
+ flow->tp_dst = htons(icmpv6_key->icmpv6_code);
+
+ if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
+ flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
+ expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
+ if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
+ const struct ovs_key_nd *nd_key;
+
+ nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
+ memcpy(&flow->nd_target, nd_key->nd_target,
+ sizeof flow->nd_target);
+ memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
+ memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
+ }
+ }
+ }
+ }
+
+ return check_expectations(present_attrs, expected_attrs, key, key_len);
+}