X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fmatch.c;h=73b1bf0fa36102a88c562f4afdb5199b7b072975;hb=2431be1b68d386bd616378d2c528242775c4d54a;hp=f1bf63c3fcba3ff5974d8e86ab2562ba71e2ea34;hpb=cb22974d773942d66da42b700b8bca0db27a0920;p=sliver-openvswitch.git

diff --git a/lib/match.c b/lib/match.c
index f1bf63c3f..73b1bf0fa 100644
--- a/lib/match.c
+++ b/lib/match.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,10 +21,6 @@
 #include "dynamic-string.h"
 #include "ofp-util.h"
 #include "packets.h"
-#include "vlog.h"
-
-VLOG_DEFINE_THIS_MODULE(match);
-
 
 /* Converts the flow in 'flow' into a match in 'match', with the given
  * 'wildcards'. */
@@ -60,8 +56,8 @@ match_wc_init(struct match *match, const struct flow *flow)
         memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
     }
 
-    if (flow->skb_mark) {
-        memset(&wc->masks.skb_mark, 0xff, sizeof wc->masks.skb_mark);
+    if (flow->pkt_mark) {
+        memset(&wc->masks.pkt_mark, 0xff, sizeof wc->masks.pkt_mark);
     }
 
     for (i = 0; i < FLOW_N_REGS; i++) {
@@ -98,6 +94,8 @@ match_wc_init(struct match *match, const struct flow *flow)
                (flow->dl_type == htons(ETH_TYPE_RARP))) {
         memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
         memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
+    } else if (eth_type_mpls(flow->dl_type)) {
+        memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse);
     }
 
     if (flow->dl_type == htons(ETH_TYPE_ARP) ||
@@ -106,44 +104,34 @@ match_wc_init(struct match *match, const struct flow *flow)
         memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
     }
 
-    if (flow->dl_type == htons(ETH_TYPE_IPV6) ||
-        flow->dl_type == htons(ETH_TYPE_IP)) {
+    if (is_ip_any(flow)) {
         memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
         memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
-    }
 
-    if (flow->nw_frag) {
-        memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
-    }
+        if (flow->nw_frag) {
+            memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
+            if (flow->nw_frag & FLOW_NW_FRAG_LATER) {
+                /* No transport layer header in later fragments. */
+                return;
+            }
+        }
 
-    if (flow->nw_proto == IPPROTO_ICMP || flow->nw_proto == IPPROTO_ICMPV6 ||
-        (flow->tp_src || flow->tp_dst)) {
-        memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
-        memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
-    }
+        if (flow->nw_proto == IPPROTO_ICMP ||
+            flow->nw_proto == IPPROTO_ICMPV6 ||
+            (flow->tp_src || flow->tp_dst)) {
+            memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
+            memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
+        }
 
-    if (flow->nw_proto == IPPROTO_ICMPV6) {
-        memset(&wc->masks.arp_sha, 0xff, sizeof wc->masks.arp_sha);
-        memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
+        if (flow->nw_proto == IPPROTO_ICMPV6) {
+            memset(&wc->masks.arp_sha, 0xff, sizeof wc->masks.arp_sha);
+            memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
+        }
     }
 
     return;
 }
 
-/* Converts the flow in 'flow' into an exact-match match in 'match'. */
-void
-match_init_exact(struct match *match, const struct flow *flow)
-{
-    ovs_be64 tun_id = flow->tunnel.tun_id;
-
-    match->flow = *flow;
-    match->flow.skb_priority = 0;
-    match->flow.skb_mark = 0;
-    memset(&match->flow.tunnel, 0, sizeof match->flow.tunnel);
-    match->flow.tunnel.tun_id = tun_id;
-    flow_wildcards_init_exact(&match->wc);
-}
-
 /* Initializes 'match' as a "catch-all" match that matches every packet. */
 void
 match_init_catchall(struct match *match)
@@ -184,7 +172,7 @@ match_set_reg_masked(struct match *match, unsigned int reg_idx,
 void
 match_set_metadata(struct match *match, ovs_be64 metadata)
 {
-    match_set_metadata_masked(match, metadata, htonll(UINT64_MAX));
+    match_set_metadata_masked(match, metadata, OVS_BE64_MAX);
 }
 
 void
@@ -198,7 +186,7 @@ match_set_metadata_masked(struct match *match,
 void
 match_set_tun_id(struct match *match, ovs_be64 tun_id)
 {
-    match_set_tun_id_masked(match, tun_id, htonll(UINT64_MAX));
+    match_set_tun_id_masked(match, tun_id, OVS_BE64_MAX);
 }
 
 void
@@ -211,7 +199,7 @@ match_set_tun_id_masked(struct match *match, ovs_be64 tun_id, ovs_be64 mask)
 void
 match_set_tun_src(struct match *match, ovs_be32 src)
 {
-    match_set_tun_src_masked(match, src, htonl(UINT32_MAX));
+    match_set_tun_src_masked(match, src, OVS_BE32_MAX);
 }
 
 void
@@ -224,7 +212,7 @@ match_set_tun_src_masked(struct match *match, ovs_be32 src, ovs_be32 mask)
 void
 match_set_tun_dst(struct match *match, ovs_be32 dst)
 {
-    match_set_tun_dst_masked(match, dst, htonl(UINT32_MAX));
+    match_set_tun_dst_masked(match, dst, OVS_BE32_MAX);
 }
 
 void
@@ -274,10 +262,10 @@ match_set_tun_flags_masked(struct match *match, uint16_t flags, uint16_t mask)
 }
 
 void
-match_set_in_port(struct match *match, uint16_t ofp_port)
+match_set_in_port(struct match *match, ofp_port_t ofp_port)
 {
-    match->wc.masks.in_port = UINT16_MAX;
-    match->flow.in_port = ofp_port;
+    match->wc.masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
+    match->flow.in_port.ofp_port = ofp_port;
 }
 
 void
@@ -288,16 +276,22 @@ match_set_skb_priority(struct match *match, uint32_t skb_priority)
 }
 
 void
-match_set_skb_mark(struct match *match, uint32_t skb_mark)
+match_set_pkt_mark(struct match *match, uint32_t pkt_mark)
 {
-    match->wc.masks.skb_mark = UINT32_MAX;
-    match->flow.skb_mark = skb_mark;
+    match_set_pkt_mark_masked(match, pkt_mark, UINT32_MAX);
+}
+
+void
+match_set_pkt_mark_masked(struct match *match, uint32_t pkt_mark, uint32_t mask)
+{
+    match->flow.pkt_mark = pkt_mark & mask;
+    match->wc.masks.pkt_mark = mask;
 }
 
 void
 match_set_dl_type(struct match *match, ovs_be16 dl_type)
 {
-    match->wc.masks.dl_type = htons(UINT16_MAX);
+    match->wc.masks.dl_type = OVS_BE16_MAX;
     match->flow.dl_type = dl_type;
 }
 
@@ -408,7 +402,7 @@ match_set_dl_vlan(struct match *match, ovs_be16 dl_vlan)
 {
     flow_set_dl_vlan(&match->flow, dl_vlan);
     if (dl_vlan == htons(OFP10_VLAN_NONE)) {
-        match->wc.masks.vlan_tci = htons(UINT16_MAX);
+        match->wc.masks.vlan_tci = OVS_BE16_MAX;
     } else {
         match->wc.masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
     }
@@ -461,10 +455,61 @@ match_set_dl_vlan_pcp(struct match *match, uint8_t dl_vlan_pcp)
     match->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_PCP_MASK);
 }
 
+/* Modifies 'match' so that the MPLS label is wildcarded. */
+void
+match_set_any_mpls_label(struct match *match)
+{
+    match->wc.masks.mpls_lse &= ~htonl(MPLS_LABEL_MASK);
+    flow_set_mpls_label(&match->flow, htonl(0));
+}
+
+/* Modifies 'match' so that it matches only packets with an MPLS header whose
+ * label equals the low 20 bits of 'mpls_label'. */
+void
+match_set_mpls_label(struct match *match, ovs_be32 mpls_label)
+{
+    match->wc.masks.mpls_lse |= htonl(MPLS_LABEL_MASK);
+    flow_set_mpls_label(&match->flow, mpls_label);
+}
+
+/* Modifies 'match' so that the MPLS TC is wildcarded. */
+void
+match_set_any_mpls_tc(struct match *match)
+{
+    match->wc.masks.mpls_lse &= ~htonl(MPLS_TC_MASK);
+    flow_set_mpls_tc(&match->flow, 0);
+}
+
+/* Modifies 'match' so that it matches only packets with an MPLS header whose
+ * Traffic Class equals the low 3 bits of 'mpls_tc'. */
+void
+match_set_mpls_tc(struct match *match, uint8_t mpls_tc)
+{
+    match->wc.masks.mpls_lse |= htonl(MPLS_TC_MASK);
+    flow_set_mpls_tc(&match->flow, mpls_tc);
+}
+
+/* Modifies 'match' so that the MPLS stack flag is wildcarded. */
+void
+match_set_any_mpls_bos(struct match *match)
+{
+    match->wc.masks.mpls_lse &= ~htonl(MPLS_BOS_MASK);
+    flow_set_mpls_bos(&match->flow, 0);
+}
+
+/* Modifies 'match' so that it matches only packets with an MPLS header whose
+ * Stack Flag equals the lower bit of 'mpls_bos' */
+void
+match_set_mpls_bos(struct match *match, uint8_t mpls_bos)
+{
+    match->wc.masks.mpls_lse |= htonl(MPLS_BOS_MASK);
+    flow_set_mpls_bos(&match->flow, mpls_bos);
+}
+
 void
 match_set_tp_src(struct match *match, ovs_be16 tp_src)
 {
-    match_set_tp_src_masked(match, tp_src, htons(UINT16_MAX));
+    match_set_tp_src_masked(match, tp_src, OVS_BE16_MAX);
 }
 
 void
@@ -477,7 +522,7 @@ match_set_tp_src_masked(struct match *match, ovs_be16 port, ovs_be16 mask)
 void
 match_set_tp_dst(struct match *match, ovs_be16 tp_dst)
 {
-    match_set_tp_dst_masked(match, tp_dst, htons(UINT16_MAX));
+    match_set_tp_dst_masked(match, tp_dst, OVS_BE16_MAX);
 }
 
 void
@@ -498,7 +543,7 @@ void
 match_set_nw_src(struct match *match, ovs_be32 nw_src)
 {
     match->flow.nw_src = nw_src;
-    match->wc.masks.nw_src = htonl(UINT32_MAX);
+    match->wc.masks.nw_src = OVS_BE32_MAX;
 }
 
 void
@@ -513,7 +558,7 @@ void
 match_set_nw_dst(struct match *match, ovs_be32 nw_dst)
 {
     match->flow.nw_dst = nw_dst;
-    match->wc.masks.nw_dst = htonl(UINT32_MAX);
+    match->wc.masks.nw_dst = OVS_BE32_MAX;
 }
 
 void
@@ -638,7 +683,7 @@ match_set_ipv6_dst_masked(struct match *match, const struct in6_addr *dst,
 void
 match_set_ipv6_label(struct match *match, ovs_be32 ipv6_label)
 {
-    match->wc.masks.ipv6_label = htonl(UINT32_MAX);
+    match->wc.masks.ipv6_label = OVS_BE32_MAX;
     match->flow.ipv6_label = ipv6_label;
 }
 
@@ -725,7 +770,7 @@ format_be16_masked(struct ds *s, const char *name,
 {
     if (mask != htons(0)) {
         ds_put_format(s, "%s=", name);
-        if (mask == htons(UINT16_MAX)) {
+        if (mask == OVS_BE16_MAX) {
             ds_put_format(s, "%"PRIu16, ntohs(value));
         } else {
             ds_put_format(s, "0x%"PRIx16"/0x%"PRIx16,
@@ -744,7 +789,7 @@ format_flow_tunnel(struct ds *s, const struct match *match)
     switch (wc->masks.tunnel.tun_id) {
     case 0:
         break;
-    case CONSTANT_HTONLL(UINT64_MAX):
+    case OVS_BE64_MAX:
         ds_put_format(s, "tun_id=%#"PRIx64",", ntohll(tnl->tun_id));
         break;
     default:
@@ -781,14 +826,22 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
 
     int i;
 
-    BUILD_ASSERT_DECL(FLOW_WC_SEQ == 18);
+    BUILD_ASSERT_DECL(FLOW_WC_SEQ == 21);
 
     if (priority != OFP_DEFAULT_PRIORITY) {
         ds_put_format(s, "priority=%u,", priority);
     }
 
-    if (wc->masks.skb_mark) {
-        ds_put_format(s, "skb_mark=%#"PRIx32",", f->skb_mark);
+    switch (wc->masks.pkt_mark) {
+    case 0:
+        break;
+    case UINT32_MAX:
+        ds_put_format(s, "pkt_mark=%#"PRIx32",", f->pkt_mark);
+        break;
+    default:
+        ds_put_format(s, "pkt_mark=%#"PRIx32"/%#"PRIx32",",
+                      f->pkt_mark, wc->masks.pkt_mark);
+        break;
     }
 
     if (wc->masks.skb_priority) {
@@ -806,6 +859,8 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
                     ds_put_cstr(s, "tcp,");
                 } else if (f->nw_proto == IPPROTO_UDP) {
                     ds_put_cstr(s, "udp,");
+                } else if (f->nw_proto == IPPROTO_SCTP) {
+                    ds_put_cstr(s, "sctp,");
                 } else {
                     ds_put_cstr(s, "ip,");
                     skip_proto = false;
@@ -822,6 +877,8 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
                     ds_put_cstr(s, "tcp6,");
                 } else if (f->nw_proto == IPPROTO_UDP) {
                     ds_put_cstr(s, "udp6,");
+                } else if (f->nw_proto == IPPROTO_SCTP) {
+                    ds_put_cstr(s, "sctp6,");
                 } else {
                     ds_put_cstr(s, "ipv6,");
                     skip_proto = false;
@@ -833,6 +890,10 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
             ds_put_cstr(s, "arp,");
         } else if (f->dl_type == htons(ETH_TYPE_RARP)) {
             ds_put_cstr(s, "rarp,");
+        } else if (f->dl_type == htons(ETH_TYPE_MPLS)) {
+            ds_put_cstr(s, "mpls,");
+        } else if (f->dl_type == htons(ETH_TYPE_MPLS_MCAST)) {
+            ds_put_cstr(s, "mplsm,");
         } else {
             skip_type = false;
         }
@@ -856,7 +917,7 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
     switch (wc->masks.metadata) {
     case 0:
         break;
-    case CONSTANT_HTONLL(UINT64_MAX):
+    case OVS_BE64_MAX:
         ds_put_format(s, "metadata=%#"PRIx64",", ntohll(f->metadata));
         break;
     default:
@@ -864,9 +925,9 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
                       ntohll(f->metadata), ntohll(wc->masks.metadata));
         break;
     }
-    if (wc->masks.in_port) {
+    if (wc->masks.in_port.ofp_port) {
         ds_put_cstr(s, "in_port=");
-        ofputil_format_port(f->in_port, s);
+        ofputil_format_port(f->in_port.ofp_port, s);
         ds_put_char(s, ',');
     }
     if (wc->masks.vlan_tci) {
@@ -902,7 +963,7 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
         format_ipv6_netmask(s, "ipv6_src", &f->ipv6_src, &wc->masks.ipv6_src);
         format_ipv6_netmask(s, "ipv6_dst", &f->ipv6_dst, &wc->masks.ipv6_dst);
         if (wc->masks.ipv6_label) {
-            if (wc->masks.ipv6_label == htonl(UINT32_MAX)) {
+            if (wc->masks.ipv6_label == OVS_BE32_MAX) {
                 ds_put_format(s, "ipv6_label=0x%05"PRIx32",",
                               ntohl(f->ipv6_label));
             } else {
@@ -941,6 +1002,22 @@ match_format(const struct match *match, struct ds *s, unsigned int priority)
     if (wc->masks.nw_ttl) {
         ds_put_format(s, "nw_ttl=%"PRIu8",", f->nw_ttl);
     }
+    if (wc->masks.mpls_lse & htonl(MPLS_LABEL_MASK)) {
+        ds_put_format(s, "mpls_label=%"PRIu32",",
+                 mpls_lse_to_label(f->mpls_lse));
+    }
+    if (wc->masks.mpls_lse & htonl(MPLS_TC_MASK)) {
+        ds_put_format(s, "mpls_tc=%"PRIu8",",
+                 mpls_lse_to_tc(f->mpls_lse));
+    }
+    if (wc->masks.mpls_lse & htonl(MPLS_TTL_MASK)) {
+        ds_put_format(s, "mpls_ttl=%"PRIu8",",
+                 mpls_lse_to_ttl(f->mpls_lse));
+    }
+    if (wc->masks.mpls_lse & htonl(MPLS_BOS_MASK)) {
+        ds_put_format(s, "mpls_bos=%"PRIu8",",
+                 mpls_lse_to_bos(f->mpls_lse));
+    }
     switch (wc->masks.nw_frag) {
     case FLOW_NW_FRAG_ANY | FLOW_NW_FRAG_LATER:
         ds_put_format(s, "nw_frag=%s,",
@@ -1005,8 +1082,8 @@ match_print(const struct match *match)
 void
 minimatch_init(struct minimatch *dst, const struct match *src)
 {
-    miniflow_init(&dst->flow, &src->flow);
     minimask_init(&dst->mask, &src->wc);
+    miniflow_init_with_minimask(&dst->flow, &src->flow, &dst->mask);
 }
 
 /* Initializes 'dst' as a copy of 'src'.  The caller must eventually free 'dst'
@@ -1018,6 +1095,15 @@ minimatch_clone(struct minimatch *dst, const struct minimatch *src)
     minimask_clone(&dst->mask, &src->mask);
 }
 
+/* Initializes 'dst' with the data in 'src', destroying 'src'.  The caller must
+ * eventually free 'dst' with minimatch_destroy(). */
+void
+minimatch_move(struct minimatch *dst, struct minimatch *src)
+{
+    miniflow_move(&dst->flow, &src->flow);
+    minimask_move(&dst->mask, &src->mask);
+}
+
 /* Frees any memory owned by 'match'.  Does not free the storage in which
  * 'match' itself resides; the caller is responsible for that. */
 void
@@ -1050,6 +1136,35 @@ minimatch_hash(const struct minimatch *match, uint32_t basis)
     return miniflow_hash(&match->flow, minimask_hash(&match->mask, basis));
 }
 
+/* Returns true if 'target' satisifies 'match', that is, if each bit for which
+ * 'match' specifies a particular value has the correct value in 'target'.
+ *
+ * This function is equivalent to miniflow_equal_flow_in_minimask(&match->flow,
+ * target, &match->mask) but it is faster because of the invariant that
+ * match->flow.map and match->mask.map are the same. */
+bool
+minimatch_matches_flow(const struct minimatch *match,
+                       const struct flow *target)
+{
+    const uint32_t *target_u32 = (const uint32_t *) target;
+    const uint32_t *flowp = match->flow.values;
+    const uint32_t *maskp = match->mask.masks.values;
+    int i;
+
+    for (i = 0; i < MINI_N_MAPS; i++) {
+        uint32_t map;
+
+        for (map = match->flow.map[i]; map; map = zero_rightmost_1bit(map)) {
+            if ((*flowp++ ^ target_u32[raw_ctz(map)]) & *maskp++) {
+                return false;
+            }
+        }
+        target_u32 += 32;
+    }
+
+    return true;
+}
+
 /* Appends a string representation of 'match' to 's'.  If 'priority' is
  * different from OFP_DEFAULT_PRIORITY, includes it in 's'. */
 void