X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Factions.c;h=3223c65bd66b75680caf790ac470ff9f498e6d58;hb=f696f12fbe84f49d650f48c45ce1a24b94547ad2;hp=6defd2d4f0e0228eb01979f41b49118ffae885c0;hpb=40796b34abcf5ecda6b5283961ed26e28f7ae32e;p=openvswitch

diff --git a/datapath/actions.c b/datapath/actions.c
index 6defd2d4..3223c65b 100644
--- a/datapath/actions.c
+++ b/datapath/actions.c
@@ -1,6 +1,6 @@
 /*
  * Distributed under the terms of the GNU GPL version 2.
- * Copyright (c) 2007, 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2007, 2008, 2009, 2010, 2011 Nicira Networks.
  *
  * Significant portions of this file may be copied from parts of the Linux
  * kernel, by Linus Torvalds and others.
@@ -26,6 +26,10 @@
 #include "openvswitch/datapath-protocol.h"
 #include "vport.h"
 
+static int do_execute_actions(struct datapath *, struct sk_buff *,
+			      const struct sw_flow_key *,
+			      const struct nlattr *actions, u32 actions_len);
+
 static struct sk_buff *make_writable(struct sk_buff *skb, unsigned min_headroom)
 {
 	if (skb_cloned(skb)) {
@@ -72,7 +76,7 @@ static struct sk_buff *vlan_pull_tag(struct sk_buff *skb)
 }
 
 static struct sk_buff *modify_vlan_tci(struct datapath *dp, struct sk_buff *skb,
-				       const struct odp_flow_key *key,
+				       const struct sw_flow_key *key,
 				       const struct nlattr *a, u32 actions_len)
 {
 	__be16 tci = nla_get_be16(a);
@@ -133,7 +137,7 @@ static struct sk_buff *modify_vlan_tci(struct datapath *dp, struct sk_buff *skb,
 		 * groups configured). */
 		if (skb_is_gso(skb)) {
 			const struct nlattr *actions_left;
-			u32 actions_len_left;
+			int actions_len_left;
 			struct sk_buff *segs;
 
 			segs = skb_gso_segment(skb, 0);
@@ -146,7 +150,6 @@ static struct sk_buff *modify_vlan_tci(struct datapath *dp, struct sk_buff *skb,
 
 			do {
 				struct sk_buff *nskb = segs->next;
-				int err;
 
 				segs->next = NULL;
 
@@ -156,7 +159,7 @@ static struct sk_buff *modify_vlan_tci(struct datapath *dp, struct sk_buff *skb,
 				segs = __vlan_put_tag(segs, ntohs(tci));
 				err = -ENOMEM;
 				if (segs) {
-					err = execute_actions(
+					err = do_execute_actions(
 						dp, segs, key, actions_left,
 						actions_len_left);
 				}
@@ -204,13 +207,13 @@ static struct sk_buff *strip_vlan(struct sk_buff *skb)
 	return skb;
 }
 
-static bool is_ip(struct sk_buff *skb, const struct odp_flow_key *key)
+static bool is_ip(struct sk_buff *skb, const struct sw_flow_key *key)
 {
 	return (key->dl_type == htons(ETH_P_IP) &&
 		skb->transport_header > skb->network_header);
 }
 
-static __sum16 *get_l4_checksum(struct sk_buff *skb, const struct odp_flow_key *key)
+static __sum16 *get_l4_checksum(struct sk_buff *skb, const struct sw_flow_key *key)
 {
 	int transport_len = skb->len - skb_transport_offset(skb);
 	if (key->nw_proto == IPPROTO_TCP) {
@@ -224,7 +227,7 @@ static __sum16 *get_l4_checksum(struct sk_buff *skb, const struct odp_flow_key *
 }
 
 static struct sk_buff *set_nw_addr(struct sk_buff *skb,
-				   const struct odp_flow_key *key,
+				   const struct sw_flow_key *key,
 				   const struct nlattr *a)
 {
 	__be32 new_nwaddr = nla_get_be32(a);
@@ -240,7 +243,7 @@ static struct sk_buff *set_nw_addr(struct sk_buff *skb,
 		return NULL;
 
 	nh = ip_hdr(skb);
-	nwaddr = nla_type(a) == ODPAT_SET_NW_SRC ? &nh->saddr : &nh->daddr;
+	nwaddr = nla_type(a) == ODP_ACTION_ATTR_SET_NW_SRC ? &nh->saddr : &nh->daddr;
 
 	check = get_l4_checksum(skb, key);
 	if (likely(check))
@@ -253,7 +256,7 @@ static struct sk_buff *set_nw_addr(struct sk_buff *skb,
 }
 
 static struct sk_buff *set_nw_tos(struct sk_buff *skb,
-				  const struct odp_flow_key *key,
+				  const struct sw_flow_key *key,
 				  u8 nw_tos)
 {
 	if (unlikely(!is_ip(skb, key)))
@@ -276,7 +279,7 @@ static struct sk_buff *set_nw_tos(struct sk_buff *skb,
 }
 
 static struct sk_buff *set_tp_port(struct sk_buff *skb,
-				   const struct odp_flow_key *key,
+				   const struct sw_flow_key *key,
 				   const struct nlattr *a)
 {
 	struct udphdr *th;
@@ -303,7 +306,7 @@ static struct sk_buff *set_tp_port(struct sk_buff *skb,
 	 * supports those protocols.
 	 */
 	th = udp_hdr(skb);
-	port = nla_type(a) == ODPAT_SET_TP_SRC ? &th->source : &th->dest;
+	port = nla_type(a) == ODP_ACTION_ATTR_SET_TP_SRC ? &th->source : &th->dest;
 	inet_proto_csum_replace2(check, skb, *port, nla_get_be16(a), 0);
 	*port = nla_get_be16(a);
 
@@ -321,7 +324,7 @@ static struct sk_buff *set_tp_port(struct sk_buff *skb,
  * or truncated header fields or one whose inner and outer Ethernet address
  * differ.
  */
-static bool is_spoofed_arp(struct sk_buff *skb, const struct odp_flow_key *key)
+static bool is_spoofed_arp(struct sk_buff *skb, const struct sw_flow_key *key)
 {
 	struct arp_eth_header *arp;
 
@@ -357,39 +360,28 @@ error:
 	kfree_skb(skb);
 }
 
-static int output_control(struct datapath *dp, struct sk_buff *skb, u32 arg)
+static int output_control(struct datapath *dp, struct sk_buff *skb, u64 arg,
+			  const struct sw_flow_key *key)
 {
+	struct dp_upcall_info upcall;
+
 	skb = skb_clone(skb, GFP_ATOMIC);
 	if (!skb)
 		return -ENOMEM;
-	return dp_output_control(dp, skb, _ODPL_ACTION_NR, arg);
-}
-
-/* Send a copy of this packet up to the sFlow agent, along with extra
- * information about what happened to it. */
-static void sflow_sample(struct datapath *dp, struct sk_buff *skb,
-			 const struct nlattr *a, u32 actions_len,
-			 struct vport *vport)
-{
-	struct odp_sflow_sample_header *hdr;
-	unsigned int hdrlen = sizeof(struct odp_sflow_sample_header);
-	struct sk_buff *nskb;
 
-	nskb = skb_copy_expand(skb, actions_len + hdrlen, 0, GFP_ATOMIC);
-	if (!nskb)
-		return;
-
-	memcpy(__skb_push(nskb, actions_len), a, actions_len);
-	hdr = (struct odp_sflow_sample_header*)__skb_push(nskb, hdrlen);
-	hdr->actions_len = actions_len;
-	hdr->sample_pool = atomic_read(&vport->sflow_pool);
-	dp_output_control(dp, nskb, _ODPL_SFLOW_NR, 0);
+	upcall.cmd = ODP_PACKET_CMD_ACTION;
+	upcall.key = key;
+	upcall.userdata = arg;
+	upcall.sample_pool = 0;
+	upcall.actions = NULL;
+	upcall.actions_len = 0;
+	return dp_upcall(dp, skb, &upcall);
 }
 
 /* Execute a list of actions against 'skb'. */
-int execute_actions(struct datapath *dp, struct sk_buff *skb,
-		    const struct odp_flow_key *key,
-		    const struct nlattr *actions, u32 actions_len)
+static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
+			      const struct sw_flow_key *key,
+			      const struct nlattr *actions, u32 actions_len)
 {
 	/* Every output action needs a separate clone of 'skb', but the common
 	 * case is just a single output action, so that doing a clone and
@@ -400,18 +392,6 @@ int execute_actions(struct datapath *dp, struct sk_buff *skb,
 	const struct nlattr *a;
 	int rem, err;
 
-	if (dp->sflow_probability) {
-		struct vport *p = OVS_CB(skb)->vport;
-		if (p) {
-			atomic_inc(&p->sflow_pool);
-			if (dp->sflow_probability == UINT_MAX ||
-			    net_random() < dp->sflow_probability)
-				sflow_sample(dp, skb, actions, actions_len, p);
-		}
-	}
-
-	OVS_CB(skb)->tun_id = 0;
-
 	for (a = actions, rem = actions_len; rem > 0; a = nla_next(a, &rem)) {
 		if (prev_port != -1) {
 			do_output(dp, skb_clone(skb, GFP_ATOMIC), prev_port);
@@ -419,69 +399,69 @@ int execute_actions(struct datapath *dp, struct sk_buff *skb,
 		}
 
 		switch (nla_type(a)) {
-		case ODPAT_OUTPUT:
+		case ODP_ACTION_ATTR_OUTPUT:
 			prev_port = nla_get_u32(a);
 			break;
 
-		case ODPAT_CONTROLLER:
-			err = output_control(dp, skb, nla_get_u64(a));
+		case ODP_ACTION_ATTR_CONTROLLER:
+			err = output_control(dp, skb, nla_get_u64(a), key);
 			if (err) {
 				kfree_skb(skb);
 				return err;
 			}
 			break;
 
-		case ODPAT_SET_TUNNEL:
+		case ODP_ACTION_ATTR_SET_TUNNEL:
 			OVS_CB(skb)->tun_id = nla_get_be64(a);
 			break;
 
-		case ODPAT_SET_DL_TCI:
+		case ODP_ACTION_ATTR_SET_DL_TCI:
 			skb = modify_vlan_tci(dp, skb, key, a, rem);
 			if (IS_ERR(skb))
 				return PTR_ERR(skb);
 			break;
 
-		case ODPAT_STRIP_VLAN:
+		case ODP_ACTION_ATTR_STRIP_VLAN:
 			skb = strip_vlan(skb);
 			break;
 
-		case ODPAT_SET_DL_SRC:
+		case ODP_ACTION_ATTR_SET_DL_SRC:
 			skb = make_writable(skb, 0);
 			if (!skb)
 				return -ENOMEM;
 			memcpy(eth_hdr(skb)->h_source, nla_data(a), ETH_ALEN);
 			break;
 
-		case ODPAT_SET_DL_DST:
+		case ODP_ACTION_ATTR_SET_DL_DST:
 			skb = make_writable(skb, 0);
 			if (!skb)
 				return -ENOMEM;
 			memcpy(eth_hdr(skb)->h_dest, nla_data(a), ETH_ALEN);
 			break;
 
-		case ODPAT_SET_NW_SRC:
-		case ODPAT_SET_NW_DST:
+		case ODP_ACTION_ATTR_SET_NW_SRC:
+		case ODP_ACTION_ATTR_SET_NW_DST:
 			skb = set_nw_addr(skb, key, a);
 			break;
 
-		case ODPAT_SET_NW_TOS:
+		case ODP_ACTION_ATTR_SET_NW_TOS:
 			skb = set_nw_tos(skb, key, nla_get_u8(a));
 			break;
 
-		case ODPAT_SET_TP_SRC:
-		case ODPAT_SET_TP_DST:
+		case ODP_ACTION_ATTR_SET_TP_SRC:
+		case ODP_ACTION_ATTR_SET_TP_DST:
 			skb = set_tp_port(skb, key, a);
 			break;
 
-		case ODPAT_SET_PRIORITY:
+		case ODP_ACTION_ATTR_SET_PRIORITY:
 			skb->priority = nla_get_u32(a);
 			break;
 
-		case ODPAT_POP_PRIORITY:
+		case ODP_ACTION_ATTR_POP_PRIORITY:
 			skb->priority = priority;
 			break;
 
-		case ODPAT_DROP_SPOOFED_ARP:
+		case ODP_ACTION_ATTR_DROP_SPOOFED_ARP:
 			if (unlikely(is_spoofed_arp(skb, key)))
 				goto exit;
 			break;
@@ -496,3 +476,44 @@ exit:
 		kfree_skb(skb);
 	return 0;
 }
+
+static void sflow_sample(struct datapath *dp, struct sk_buff *skb,
+			 const struct sw_flow_key *key,
+			 const struct nlattr *a, u32 actions_len)
+{
+	struct sk_buff *nskb;
+	struct vport *p = OVS_CB(skb)->vport;
+	struct dp_upcall_info upcall;
+
+	if (unlikely(!p))
+		return;
+
+	atomic_inc(&p->sflow_pool);
+	if (net_random() >= dp->sflow_probability)
+		return;
+
+	nskb = skb_clone(skb, GFP_ATOMIC);
+	if (unlikely(!nskb))
+		return;
+
+	upcall.cmd = ODP_PACKET_CMD_SAMPLE;
+	upcall.key = key;
+	upcall.userdata = 0;
+	upcall.sample_pool = atomic_read(&p->sflow_pool);
+	upcall.actions = a;
+	upcall.actions_len = actions_len;
+	dp_upcall(dp, nskb, &upcall);
+}
+
+/* Execute a list of actions against 'skb'. */
+int execute_actions(struct datapath *dp, struct sk_buff *skb,
+		    const struct sw_flow_key *key,
+		    const struct nlattr *actions, u32 actions_len)
+{
+	if (dp->sflow_probability)
+		sflow_sample(dp, skb, key, actions, actions_len);
+
+	OVS_CB(skb)->tun_id = 0;
+
+	return do_execute_actions(dp, skb, key, actions, actions_len);
+}