/*
- * 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.
#include "dynamic-string.h"
#include "flow.h"
#include "hash.h"
+#include "odp-util.h"
#include "ofp-util.h"
#include "packets.h"
}
void
-cls_rule_set_tun_id(struct cls_rule *rule, ovs_be32 tun_id)
+cls_rule_set_tun_id(struct cls_rule *rule, ovs_be64 tun_id)
{
- rule->wc.wildcards &= ~FWW_TUN_ID;
- rule->flow.tun_id = tun_id;
+ cls_rule_set_tun_id_masked(rule, tun_id, htonll(UINT64_MAX));
+}
+
+void
+cls_rule_set_tun_id_masked(struct cls_rule *rule,
+ ovs_be64 tun_id, ovs_be64 mask)
+{
+ rule->wc.tun_id_mask = mask;
+ rule->flow.tun_id = tun_id & mask;
}
void
rule->flow.icmp_code = htons(icmp_code);
}
+void
+cls_rule_set_arp_sha(struct cls_rule *rule, const uint8_t sha[ETH_ADDR_LEN])
+{
+ rule->wc.wildcards &= ~FWW_ARP_SHA;
+ memcpy(rule->flow.arp_sha, sha, ETH_ADDR_LEN);
+}
+
+void
+cls_rule_set_arp_tha(struct cls_rule *rule, const uint8_t tha[ETH_ADDR_LEN])
+{
+ rule->wc.wildcards &= ~FWW_ARP_THA;
+ memcpy(rule->flow.arp_tha, tha, ETH_ADDR_LEN);
+}
+
+void
+cls_rule_set_ipv6_src(struct cls_rule *rule, const struct in6_addr *src)
+{
+ cls_rule_set_ipv6_src_masked(rule, src, &in6addr_exact);
+}
+
+bool
+cls_rule_set_ipv6_src_masked(struct cls_rule *rule, const struct in6_addr *src,
+ const struct in6_addr *mask)
+{
+ if (flow_wildcards_set_ipv6_src_mask(&rule->wc, mask)) {
+ rule->flow.ipv6_src = ipv6_addr_bitand(src, mask);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+void
+cls_rule_set_ipv6_dst(struct cls_rule *rule, const struct in6_addr *dst)
+{
+ cls_rule_set_ipv6_dst_masked(rule, dst, &in6addr_exact);
+}
+
+bool
+cls_rule_set_ipv6_dst_masked(struct cls_rule *rule, const struct in6_addr *dst,
+ const struct in6_addr *mask)
+{
+ if (flow_wildcards_set_ipv6_dst_mask(&rule->wc, mask)) {
+ rule->flow.ipv6_dst = ipv6_addr_bitand(dst, mask);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+void
+cls_rule_set_nd_target(struct cls_rule *rule, const struct in6_addr target)
+{
+ rule->wc.wildcards &= ~FWW_ND_TARGET;
+ rule->flow.nd_target = target;
+}
+
/* Returns true if 'a' and 'b' have the same priority, wildcard the same
* fields, and have the same values for fixed fields, otherwise false. */
bool
&& flow_equal(&a->flow, &b->flow));
}
+static void
+format_ip_netmask(struct ds *s, const char *name, ovs_be32 ip,
+ ovs_be32 netmask)
+{
+ if (netmask) {
+ ds_put_format(s, "%s="IP_FMT, name, IP_ARGS(&ip));
+ if (netmask != htonl(UINT32_MAX)) {
+ if (ip_is_cidr(netmask)) {
+ int wcbits = ofputil_netmask_to_wcbits(netmask);
+ ds_put_format(s, "/%d", 32 - wcbits);
+ } else {
+ ds_put_format(s, "/"IP_FMT, IP_ARGS(&netmask));
+ }
+ }
+ ds_put_char(s, ',');
+ }
+}
+
+static void
+format_ipv6_netmask(struct ds *s, const char *name,
+ const struct in6_addr *addr,
+ const struct in6_addr *netmask)
+{
+ if (!ipv6_mask_is_any(netmask)) {
+ ds_put_format(s, "%s=", name);
+ print_ipv6_addr(s, addr);
+ if (!ipv6_mask_is_exact(netmask)) {
+ if (ipv6_is_cidr(netmask)) {
+ int cidr_bits = ipv6_count_cidr_bits(netmask);
+ ds_put_format(s, "/%d", cidr_bits);
+ } else {
+ ds_put_char(s, '/');
+ print_ipv6_addr(s, netmask);
+ }
+ }
+ ds_put_char(s, ',');
+ }
+}
+
+void
+cls_rule_format(const struct cls_rule *rule, struct ds *s)
+{
+ const struct flow_wildcards *wc = &rule->wc;
+ size_t start_len = s->length;
+ flow_wildcards_t w = wc->wildcards;
+ const struct flow *f = &rule->flow;
+ bool skip_type = false;
+ bool skip_proto = false;
+
+ int i;
+
+ if (rule->priority != OFP_DEFAULT_PRIORITY) {
+ ds_put_format(s, "priority=%d,", rule->priority);
+ }
+
+ if (!(w & FWW_DL_TYPE)) {
+ skip_type = true;
+ if (f->dl_type == htons(ETH_TYPE_IP)) {
+ if (!(w & FWW_NW_PROTO)) {
+ skip_proto = true;
+ if (f->nw_proto == IPPROTO_ICMP) {
+ ds_put_cstr(s, "icmp,");
+ } else if (f->nw_proto == IPPROTO_TCP) {
+ ds_put_cstr(s, "tcp,");
+ } else if (f->nw_proto == IPPROTO_UDP) {
+ ds_put_cstr(s, "udp,");
+ } else {
+ ds_put_cstr(s, "ip,");
+ skip_proto = false;
+ }
+ } else {
+ ds_put_cstr(s, "ip,");
+ }
+ } else if (f->dl_type == htons(ETH_TYPE_IPV6)) {
+ if (!(w & FWW_NW_PROTO)) {
+ skip_proto = true;
+ if (f->nw_proto == IPPROTO_ICMPV6) {
+ ds_put_cstr(s, "icmp6,");
+ } else if (f->nw_proto == IPPROTO_TCP) {
+ ds_put_cstr(s, "tcp6,");
+ } else if (f->nw_proto == IPPROTO_UDP) {
+ ds_put_cstr(s, "udp6,");
+ } else {
+ ds_put_cstr(s, "ipv6,");
+ skip_proto = false;
+ }
+ } else {
+ ds_put_cstr(s, "ipv6,");
+ }
+ } else if (f->dl_type == htons(ETH_TYPE_ARP)) {
+ ds_put_cstr(s, "arp,");
+ } else {
+ skip_type = false;
+ }
+ }
+ for (i = 0; i < FLOW_N_REGS; i++) {
+ switch (wc->reg_masks[i]) {
+ case 0:
+ break;
+ case UINT32_MAX:
+ ds_put_format(s, "reg%d=0x%"PRIx32",", i, f->regs[i]);
+ break;
+ default:
+ ds_put_format(s, "reg%d=0x%"PRIx32"/0x%"PRIx32",",
+ i, f->regs[i], wc->reg_masks[i]);
+ break;
+ }
+ }
+ switch (wc->tun_id_mask) {
+ case 0:
+ break;
+ case CONSTANT_HTONLL(UINT64_MAX):
+ ds_put_format(s, "tun_id=%#"PRIx64",", ntohll(f->tun_id));
+ break;
+ default:
+ ds_put_format(s, "tun_id=%#"PRIx64"/%#"PRIx64",",
+ ntohll(f->tun_id), ntohll(wc->tun_id_mask));
+ break;
+ }
+ if (!(w & FWW_IN_PORT)) {
+ ds_put_format(s, "in_port=%"PRIu16",",
+ odp_port_to_ofp_port(f->in_port));
+ }
+ if (wc->vlan_tci_mask) {
+ ovs_be16 vid_mask = wc->vlan_tci_mask & htons(VLAN_VID_MASK);
+ ovs_be16 pcp_mask = wc->vlan_tci_mask & htons(VLAN_PCP_MASK);
+ ovs_be16 cfi = wc->vlan_tci_mask & htons(VLAN_CFI);
+
+ if (cfi && f->vlan_tci & htons(VLAN_CFI)
+ && (!vid_mask || vid_mask == htons(VLAN_VID_MASK))
+ && (!pcp_mask || pcp_mask == htons(VLAN_PCP_MASK))
+ && (vid_mask || pcp_mask)) {
+ if (vid_mask) {
+ ds_put_format(s, "dl_vlan=%"PRIu16",",
+ vlan_tci_to_vid(f->vlan_tci));
+ }
+ if (pcp_mask) {
+ ds_put_format(s, "dl_vlan_pcp=%d,",
+ vlan_tci_to_pcp(f->vlan_tci));
+ }
+ } else {
+ ds_put_format(s, "vlan_tci=0x%04"PRIx16"/0x%04"PRIx16",",
+ ntohs(f->vlan_tci), ntohs(wc->vlan_tci_mask));
+ }
+ }
+ if (!(w & FWW_DL_SRC)) {
+ ds_put_format(s, "dl_src="ETH_ADDR_FMT",", ETH_ADDR_ARGS(f->dl_src));
+ }
+ switch (w & (FWW_DL_DST | FWW_ETH_MCAST)) {
+ case 0:
+ ds_put_format(s, "dl_dst="ETH_ADDR_FMT",", ETH_ADDR_ARGS(f->dl_dst));
+ break;
+ case FWW_DL_DST:
+ ds_put_format(s, "dl_dst="ETH_ADDR_FMT"/01:00:00:00:00:00,",
+ ETH_ADDR_ARGS(f->dl_dst));
+ break;
+ case FWW_ETH_MCAST:
+ ds_put_format(s, "dl_dst="ETH_ADDR_FMT"/fe:ff:ff:ff:ff:ff,",
+ ETH_ADDR_ARGS(f->dl_dst));
+ break;
+ case FWW_DL_DST | FWW_ETH_MCAST:
+ break;
+ }
+ if (!skip_type && !(w & FWW_DL_TYPE)) {
+ ds_put_format(s, "dl_type=0x%04"PRIx16",", ntohs(f->dl_type));
+ }
+ if (f->dl_type == htons(ETH_TYPE_IPV6)) {
+ format_ipv6_netmask(s, "ipv6_src", &f->ipv6_src, &wc->ipv6_src_mask);
+ format_ipv6_netmask(s, "ipv6_dst", &f->ipv6_dst, &wc->ipv6_dst_mask);
+ } else {
+ format_ip_netmask(s, "nw_src", f->nw_src, wc->nw_src_mask);
+ format_ip_netmask(s, "nw_dst", f->nw_dst, wc->nw_dst_mask);
+ }
+ if (!skip_proto && !(w & FWW_NW_PROTO)) {
+ if (f->dl_type == htons(ETH_TYPE_ARP)) {
+ ds_put_format(s, "opcode=%"PRIu8",", f->nw_proto);
+ } else {
+ ds_put_format(s, "nw_proto=%"PRIu8",", f->nw_proto);
+ }
+ }
+ if (f->dl_type == htons(ETH_TYPE_ARP)) {
+ if (!(w & FWW_ARP_SHA)) {
+ ds_put_format(s, "arp_sha="ETH_ADDR_FMT",",
+ ETH_ADDR_ARGS(f->arp_sha));
+ }
+ if (!(w & FWW_ARP_THA)) {
+ ds_put_format(s, "arp_tha="ETH_ADDR_FMT",",
+ ETH_ADDR_ARGS(f->arp_tha));
+ }
+ }
+ if (!(w & FWW_NW_TOS)) {
+ ds_put_format(s, "nw_tos=%"PRIu8",", f->nw_tos);
+ }
+ if (f->nw_proto == IPPROTO_ICMP) {
+ if (!(w & FWW_TP_SRC)) {
+ ds_put_format(s, "icmp_type=%"PRIu16",", ntohs(f->tp_src));
+ }
+ if (!(w & FWW_TP_DST)) {
+ ds_put_format(s, "icmp_code=%"PRIu16",", ntohs(f->tp_dst));
+ }
+ } else if (f->nw_proto == IPPROTO_ICMPV6) {
+ if (!(w & FWW_TP_SRC)) {
+ ds_put_format(s, "icmp_type=%"PRIu16",", ntohs(f->tp_src));
+ }
+ if (!(w & FWW_TP_DST)) {
+ ds_put_format(s, "icmp_code=%"PRIu16",", ntohs(f->tp_dst));
+ }
+ if (!(w & FWW_ND_TARGET)) {
+ ds_put_cstr(s, "nd_target=");
+ print_ipv6_addr(s, &f->nd_target);
+ ds_put_char(s, ',');
+ }
+ if (!(w & FWW_ARP_SHA)) {
+ ds_put_format(s, "nd_sll="ETH_ADDR_FMT",",
+ ETH_ADDR_ARGS(f->arp_sha));
+ }
+ if (!(w & FWW_ARP_THA)) {
+ ds_put_format(s, "nd_tll="ETH_ADDR_FMT",",
+ ETH_ADDR_ARGS(f->arp_tha));
+ }
+ } else {
+ if (!(w & FWW_TP_SRC)) {
+ ds_put_format(s, "tp_src=%"PRIu16",", ntohs(f->tp_src));
+ }
+ if (!(w & FWW_TP_DST)) {
+ ds_put_format(s, "tp_dst=%"PRIu16",", ntohs(f->tp_dst));
+ }
+ }
+
+ if (s->length > start_len && ds_last(s) == ',') {
+ s->length--;
+ }
+}
+
/* Converts 'rule' to a string and returns the string. The caller must free
* the string (with free()). */
char *
cls_rule_to_string(const struct cls_rule *rule)
{
struct ds s = DS_EMPTY_INITIALIZER;
- ds_put_format(&s, "wildcards=%x priority=%u ",
- rule->wc.wildcards, rule->priority);
- flow_format(&s, &rule->flow);
- return ds_cstr(&s);
+ cls_rule_format(rule, &s);
+ return ds_steal_cstr(&s);
}
-/* Prints cls_rule 'rule', for debugging.
- *
- * (The output could be improved and expanded, but this was good enough to
- * debug the classifier.) */
void
cls_rule_print(const struct cls_rule *rule)
{
- printf("wildcards=%x priority=%u ", rule->wc.wildcards, rule->priority);
- flow_print(stdout, &rule->flow);
- putc('\n', stdout);
+ char *s = cls_rule_to_string(rule);
+ puts(s);
+ free(s);
}
\f
/* Initializes 'cls' as a classifier that initially contains no classification
return next->priority < rule->priority ? next : NULL;
}
+static bool
+ipv6_equal_except(const struct in6_addr *a, const struct in6_addr *b,
+ const struct in6_addr *mask)
+{
+ int i;
+
+#ifdef s6_addr32
+ for (i=0; i<4; i++) {
+ if ((a->s6_addr32[i] ^ b->s6_addr32[i]) & mask->s6_addr32[i]) {
+ return false;
+ }
+ }
+#else
+ for (i=0; i<16; i++) {
+ if ((a->s6_addr[i] ^ b->s6_addr[i]) & mask->s6_addr[i]) {
+ return false;
+ }
+ }
+#endif
+
+ return true;
+}
+
+
static bool
flow_equal_except(const struct flow *a, const struct flow *b,
const struct flow_wildcards *wildcards)
const flow_wildcards_t wc = wildcards->wildcards;
int i;
- BUILD_ASSERT_DECL(FLOW_SIG_SIZE == 36 + FLOW_N_REGS * 4);
+ BUILD_ASSERT_DECL(FLOW_SIG_SIZE == 100 + FLOW_N_REGS * 4);
for (i = 0; i < FLOW_N_REGS; i++) {
if ((a->regs[i] ^ b->regs[i]) & wildcards->reg_masks[i]) {
}
}
- return ((wc & FWW_TUN_ID || a->tun_id == b->tun_id)
+ return (!((a->tun_id ^ b->tun_id) & wildcards->tun_id_mask)
&& !((a->nw_src ^ b->nw_src) & wildcards->nw_src_mask)
&& !((a->nw_dst ^ b->nw_dst) & wildcards->nw_dst_mask)
&& (wc & FWW_IN_PORT || a->in_port == b->in_port)
&& (wc & FWW_ETH_MCAST
|| !((a->dl_dst[0] ^ b->dl_dst[0]) & 0x01))
&& (wc & FWW_NW_PROTO || a->nw_proto == b->nw_proto)
- && (wc & FWW_NW_TOS || a->nw_tos == b->nw_tos));
+ && (wc & FWW_NW_TOS || a->nw_tos == b->nw_tos)
+ && (wc & FWW_ARP_SHA || eth_addr_equals(a->arp_sha, b->arp_sha))
+ && (wc & FWW_ARP_THA || eth_addr_equals(a->arp_tha, b->arp_tha))
+ && ipv6_equal_except(&a->ipv6_src, &b->ipv6_src,
+ &wildcards->ipv6_src_mask)
+ && ipv6_equal_except(&a->ipv6_dst, &b->ipv6_dst,
+ &wildcards->ipv6_dst_mask)
+ && (wc & FWW_ND_TARGET
+ || ipv6_addr_equals(&a->nd_target, &b->nd_target)));
}
static void
const flow_wildcards_t wc = wildcards->wildcards;
int i;
- BUILD_ASSERT_DECL(FLOW_SIG_SIZE == 36 + 4 * FLOW_N_REGS);
+ BUILD_ASSERT_DECL(FLOW_SIG_SIZE == 100 + 4 * FLOW_N_REGS);
for (i = 0; i < FLOW_N_REGS; i++) {
flow->regs[i] &= wildcards->reg_masks[i];
}
- if (wc & FWW_TUN_ID) {
- flow->tun_id = 0;
- }
+ flow->tun_id &= wildcards->tun_id_mask;
flow->nw_src &= wildcards->nw_src_mask;
flow->nw_dst &= wildcards->nw_dst_mask;
if (wc & FWW_IN_PORT) {
if (wc & FWW_NW_TOS) {
flow->nw_tos = 0;
}
+ if (wc & FWW_ARP_SHA) {
+ memset(flow->arp_sha, 0, sizeof flow->arp_sha);
+ }
+ if (wc & FWW_ARP_THA) {
+ memset(flow->arp_tha, 0, sizeof flow->arp_tha);
+ }
+ flow->ipv6_src = ipv6_addr_bitand(&flow->ipv6_src,
+ &wildcards->ipv6_src_mask);
+ flow->ipv6_dst = ipv6_addr_bitand(&flow->ipv6_dst,
+ &wildcards->ipv6_dst_mask);
+ if (wc & FWW_ND_TARGET) {
+ memset(&flow->nd_target, 0, sizeof flow->nd_target);
+ }
}
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