From: Justin Pettit <jpettit@nicira.com>
Date: Thu, 10 Nov 2011 01:42:17 +0000 (-0800)
Subject: classifier: Don't check masks when adding IPv4/IPv6 addresses.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=209c0b17d90b8062e5a3cbd80a083ea02e18d880;p=openvswitch

classifier: Don't check masks when adding IPv4/IPv6 addresses.

The meta-flow code enforces IPv4/IPv6 masks, so there's no reason to do
it again in the classifier.  This allows a number of functions to be
removed, since the only callers were in this classifier code.
---

diff --git a/lib/classifier.c b/lib/classifier.c
index 253a4d8b..9903ab70 100644
--- a/lib/classifier.c
+++ b/lib/classifier.c
@@ -286,35 +286,30 @@ cls_rule_set_nw_proto(struct cls_rule *rule, uint8_t nw_proto)
 void
 cls_rule_set_nw_src(struct cls_rule *rule, ovs_be32 nw_src)
 {
-    cls_rule_set_nw_src_masked(rule, nw_src, htonl(UINT32_MAX));
+    rule->flow.nw_src = nw_src;
+    rule->wc.nw_src_mask = htonl(UINT32_MAX);
 }
 
-bool
-cls_rule_set_nw_src_masked(struct cls_rule *rule, ovs_be32 ip, ovs_be32 mask)
+void
+cls_rule_set_nw_src_masked(struct cls_rule *rule,
+                           ovs_be32 nw_src, ovs_be32 mask)
 {
-    if (flow_wildcards_set_nw_src_mask(&rule->wc, mask)) {
-        rule->flow.nw_src = ip & mask;
-        return true;
-    } else {
-        return false;
-    }
+    rule->flow.nw_src = nw_src & mask;
+    rule->wc.nw_src_mask = mask;
 }
 
 void
 cls_rule_set_nw_dst(struct cls_rule *rule, ovs_be32 nw_dst)
 {
-    cls_rule_set_nw_dst_masked(rule, nw_dst, htonl(UINT32_MAX));
+    rule->flow.nw_dst = nw_dst;
+    rule->wc.nw_dst_mask = htonl(UINT32_MAX);
 }
 
-bool
+void
 cls_rule_set_nw_dst_masked(struct cls_rule *rule, ovs_be32 ip, ovs_be32 mask)
 {
-    if (flow_wildcards_set_nw_dst_mask(&rule->wc, mask)) {
-        rule->flow.nw_dst = ip & mask;
-        return true;
-    } else {
-        return false;
-    }
+    rule->flow.nw_dst = ip & mask;
+    rule->wc.nw_dst_mask = mask;
 }
 
 void
@@ -386,37 +381,31 @@ cls_rule_set_arp_tha(struct cls_rule *rule, const uint8_t 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);
+    rule->flow.ipv6_src = *src;
+    rule->wc.ipv6_src_mask = in6addr_exact;
 }
 
-bool
+void
 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;
-    }
+    rule->flow.ipv6_src = ipv6_addr_bitand(src, mask);
+    rule->wc.ipv6_src_mask = *mask;
 }
 
 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);
+    rule->flow.ipv6_dst = *dst;
+    rule->wc.ipv6_dst_mask = in6addr_exact;
 }
 
-bool
+void
 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;
-    }
+    rule->flow.ipv6_dst = ipv6_addr_bitand(dst, mask);
+    rule->wc.ipv6_dst_mask = *mask;
 }
 
 void
diff --git a/lib/classifier.h b/lib/classifier.h
index 797afce7..c33f1e10 100644
--- a/lib/classifier.h
+++ b/lib/classifier.h
@@ -113,9 +113,9 @@ void cls_rule_set_tp_src(struct cls_rule *, ovs_be16);
 void cls_rule_set_tp_dst(struct cls_rule *, ovs_be16);
 void cls_rule_set_nw_proto(struct cls_rule *, uint8_t);
 void cls_rule_set_nw_src(struct cls_rule *, ovs_be32);
-bool cls_rule_set_nw_src_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask);
+void cls_rule_set_nw_src_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask);
 void cls_rule_set_nw_dst(struct cls_rule *, ovs_be32);
-bool cls_rule_set_nw_dst_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask);
+void cls_rule_set_nw_dst_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask);
 void cls_rule_set_nw_dscp(struct cls_rule *, uint8_t);
 void cls_rule_set_nw_ecn(struct cls_rule *, uint8_t);
 void cls_rule_set_nw_ttl(struct cls_rule *, uint8_t);
@@ -127,10 +127,10 @@ void cls_rule_set_icmp_code(struct cls_rule *, uint8_t);
 void cls_rule_set_arp_sha(struct cls_rule *, const uint8_t[6]);
 void cls_rule_set_arp_tha(struct cls_rule *, const uint8_t[6]);
 void cls_rule_set_ipv6_src(struct cls_rule *, const struct in6_addr *);
-bool cls_rule_set_ipv6_src_masked(struct cls_rule *, const struct in6_addr *,
+void cls_rule_set_ipv6_src_masked(struct cls_rule *, const struct in6_addr *,
                                   const struct in6_addr *);
 void cls_rule_set_ipv6_dst(struct cls_rule *, const struct in6_addr *);
-bool cls_rule_set_ipv6_dst_masked(struct cls_rule *, const struct in6_addr *,
+void cls_rule_set_ipv6_dst_masked(struct cls_rule *, const struct in6_addr *,
                                   const struct in6_addr *);
 void cls_rule_set_ipv6_label(struct cls_rule *, ovs_be32);
 void cls_rule_set_nd_target(struct cls_rule *, const struct in6_addr *);
diff --git a/lib/flow.c b/lib/flow.c
index f928cbeb..08c76d96 100644
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -764,66 +764,6 @@ flow_wildcards_has_extra(const struct flow_wildcards *a,
             || (a->vlan_tci_mask & b->vlan_tci_mask) != b->vlan_tci_mask);
 }
 
-static bool
-set_nw_mask(ovs_be32 *maskp, ovs_be32 mask)
-{
-    if (ip_is_cidr(mask)) {
-        *maskp = mask;
-        return true;
-    } else {
-        return false;
-    }
-}
-
-/* Sets the IP (or ARP) source wildcard mask to CIDR 'mask' (consisting of N
- * high-order 1-bit and 32-N low-order 0-bits).  Returns true if successful,
- * false if 'mask' is not a CIDR mask.  */
-bool
-flow_wildcards_set_nw_src_mask(struct flow_wildcards *wc, ovs_be32 mask)
-{
-    return set_nw_mask(&wc->nw_src_mask, mask);
-}
-
-/* Sets the IP (or ARP) destination wildcard mask to CIDR 'mask' (consisting of
- * N high-order 1-bit and 32-N low-order 0-bits).  Returns true if successful,
- * false if 'mask' is not a CIDR mask.  */
-bool
-flow_wildcards_set_nw_dst_mask(struct flow_wildcards *wc, ovs_be32 mask)
-{
-    return set_nw_mask(&wc->nw_dst_mask, mask);
-}
-
-static bool
-set_ipv6_mask(struct in6_addr *maskp, const struct in6_addr *mask)
-{
-    if (ipv6_is_cidr(mask)) {
-        *maskp = *mask;
-        return true;
-    } else {
-        return false;
-    }
-}
-
-/* Sets the IPv6 source wildcard mask to CIDR 'mask' (consisting of N
- * high-order 1-bit and 128-N low-order 0-bits).  Returns true if successful,
- * false if 'mask' is not a CIDR mask.  */
-bool
-flow_wildcards_set_ipv6_src_mask(struct flow_wildcards *wc,
-                                 const struct in6_addr *mask)
-{
-    return set_ipv6_mask(&wc->ipv6_src_mask, mask);
-}
-
-/* Sets the IPv6 destination wildcard mask to CIDR 'mask' (consisting of
- * N high-order 1-bit and 128-N low-order 0-bits).  Returns true if
- * successful, false if 'mask' is not a CIDR mask.  */
-bool
-flow_wildcards_set_ipv6_dst_mask(struct flow_wildcards *wc,
-                                 const struct in6_addr *mask)
-{
-    return set_ipv6_mask(&wc->ipv6_dst_mask, mask);
-}
-
 /* Sets the wildcard mask for register 'idx' in 'wc' to 'mask'.
  * (A 0-bit indicates a wildcard bit.) */
 void
diff --git a/lib/flow.h b/lib/flow.h
index 443986e6..75988ec0 100644
--- a/lib/flow.h
+++ b/lib/flow.h
@@ -177,12 +177,6 @@ void flow_wildcards_init_exact(struct flow_wildcards *);
 bool flow_wildcards_is_exact(const struct flow_wildcards *);
 bool flow_wildcards_is_catchall(const struct flow_wildcards *);
 
-bool flow_wildcards_set_nw_src_mask(struct flow_wildcards *, ovs_be32);
-bool flow_wildcards_set_nw_dst_mask(struct flow_wildcards *, ovs_be32);
-bool flow_wildcards_set_ipv6_src_mask(struct flow_wildcards *,
-                                      const struct in6_addr *);
-bool flow_wildcards_set_ipv6_dst_mask(struct flow_wildcards *,
-                                      const struct in6_addr *);
 void flow_wildcards_set_reg_mask(struct flow_wildcards *,
                                  int idx, uint32_t mask);