X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fodp-util.c;h=b974dcc4f06b85e79cce0e2f5ad59d0025fc9d8e;hb=fea393b1d6b2729a784b898dbdd48d30d42e3ff7;hp=21bc9a51644dd54d4bb5f0c84dd406d9bb5b912b;hpb=34e63086edddcae06d7c1a4fa84fec0861e50758;p=sliver-openvswitch.git diff --git a/lib/odp-util.c b/lib/odp-util.c index 21bc9a516..b974dcc4f 100644 --- a/lib/odp-util.c +++ b/lib/odp-util.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009 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. @@ -14,120 +14,1336 @@ * limitations under the License. */ +#include #include #include "odp-util.h" +#include #include +#include +#include #include #include +#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; + } + + return -1; +} + +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) +{ + 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 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; } - memset(a, 0, sizeof *a); - a->type = type; - return a; } void -format_odp_action(struct ds *ds, const union odp_action *a) +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, ""); + } + ds_put_format(ds, ",***%u leftover bytes***", left); + } + } else { + ds_put_cstr(ds, "drop"); + } +} + +/* 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 (a->type) { - case ODPAT_OUTPUT: - ds_put_format(ds, "%"PRIu16, a->output.port); + 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 ""; + } +} + +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_OUTPUT_GROUP: - ds_put_format(ds, "g%"PRIu16, a->output_group.group); + + case OVS_KEY_ATTR_PRIORITY: + ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a)); break; - case ODPAT_CONTROLLER: - ds_put_format(ds, "ctl(%"PRIu32")", a->controller.arg); + + 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 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 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_VLAN_PCP: - ds_put_format(ds, "set_vlan_pcp(%"PRIu8")", a->vlan_pcp.vlan_pcp); + + case OVS_KEY_ATTR_ETHERTYPE: + ds_put_format(ds, "(0x%04"PRIx16")", + ntohs(nl_attr_get_be16(a))); + break; + + 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_STRIP_VLAN: - ds_put_format(ds, "strip_vlan"); + + 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_DL_SRC: - ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")", - ETH_ADDR_ARGS(a->dl_addr.dl_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_DL_DST: - ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")", - ETH_ADDR_ARGS(a->dl_addr.dl_addr)); + + 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_NW_SRC: - ds_put_format(ds, "set_nw_src("IP_FMT")", - IP_ARGS(&a->nw_addr.nw_addr)); + + 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_NW_DST: - ds_put_format(ds, "set_nw_dst("IP_FMT")", - IP_ARGS(&a->nw_addr.nw_addr)); + + 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_TP_SRC: - ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port)); + + 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_SET_TP_DST: - ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port)); + + 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 %"PRIu16"***", 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); + } + if (left) { + if (left == key_len) { + ds_put_cstr(ds, ""); + } + ds_put_format(ds, ",***%u leftover bytes***", left); } - format_odp_action(ds, &actions[i]); + } else { + ds_put_cstr(ds, ""); } - 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) +static bool +ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type) { - ds_put_format(ds, "packets:%"PRIu64", bytes:%"PRIu64", used:", - s->n_packets, 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); + 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); +}