aboutsummaryrefslogtreecommitdiff
path: root/net/openvswitch/actions.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/openvswitch/actions.c')
-rw-r--r--net/openvswitch/actions.c80
1 files changed, 66 insertions, 14 deletions
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index ac2defeeba8..e70d8b18e96 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2012 Nicira, Inc.
+ * Copyright (c) 2007-2013 Nicira, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
@@ -22,6 +22,7 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/openvswitch.h>
+#include <linux/sctp.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/in6.h>
@@ -31,6 +32,7 @@
#include <net/ipv6.h>
#include <net/checksum.h>
#include <net/dsfield.h>
+#include <net/sctp/checksum.h>
#include "datapath.h"
#include "vport.h"
@@ -58,7 +60,7 @@ static int __pop_vlan_tci(struct sk_buff *skb, __be16 *current_tci)
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->csum = csum_sub(skb->csum, csum_partial(skb->data
- + ETH_HLEN, VLAN_HLEN, 0));
+ + (2 * ETH_ALEN), VLAN_HLEN, 0));
vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN);
*current_tci = vhdr->h_vlan_TCI;
@@ -98,7 +100,7 @@ static int pop_vlan(struct sk_buff *skb)
if (unlikely(err))
return err;
- __vlan_hwaccel_put_tag(skb, ntohs(tci));
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(tci));
return 0;
}
@@ -110,15 +112,15 @@ static int push_vlan(struct sk_buff *skb, const struct ovs_action_push_vlan *vla
/* push down current VLAN tag */
current_tag = vlan_tx_tag_get(skb);
- if (!__vlan_put_tag(skb, current_tag))
+ if (!__vlan_put_tag(skb, skb->vlan_proto, current_tag))
return -ENOMEM;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->csum = csum_add(skb->csum, csum_partial(skb->data
- + ETH_HLEN, VLAN_HLEN, 0));
+ + (2 * ETH_ALEN), VLAN_HLEN, 0));
}
- __vlan_hwaccel_put_tag(skb, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT);
+ __vlan_hwaccel_put_tag(skb, vlan->vlan_tpid, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT);
return 0;
}
@@ -130,8 +132,12 @@ static int set_eth_addr(struct sk_buff *skb,
if (unlikely(err))
return err;
- memcpy(eth_hdr(skb)->h_source, eth_key->eth_src, ETH_ALEN);
- memcpy(eth_hdr(skb)->h_dest, eth_key->eth_dst, ETH_ALEN);
+ skb_postpull_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);
+
+ ether_addr_copy(eth_hdr(skb)->h_source, eth_key->eth_src);
+ ether_addr_copy(eth_hdr(skb)->h_dest, eth_key->eth_dst);
+
+ ovs_skb_postpush_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);
return 0;
}
@@ -159,7 +165,7 @@ static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,
}
csum_replace4(&nh->check, *addr, new_addr);
- skb->rxhash = 0;
+ skb_clear_hash(skb);
*addr = new_addr;
}
@@ -193,7 +199,7 @@ static void set_ipv6_addr(struct sk_buff *skb, u8 l4_proto,
if (recalculate_csum)
update_ipv6_checksum(skb, l4_proto, addr, new_addr);
- skb->rxhash = 0;
+ skb_clear_hash(skb);
memcpy(addr, new_addr, sizeof(__be32[4]));
}
@@ -290,7 +296,7 @@ static void set_tp_port(struct sk_buff *skb, __be16 *port,
{
inet_proto_csum_replace2(check, skb, *port, new_port, 0);
*port = new_port;
- skb->rxhash = 0;
+ skb_clear_hash(skb);
}
static void set_udp_port(struct sk_buff *skb, __be16 *port, __be16 new_port)
@@ -304,7 +310,7 @@ static void set_udp_port(struct sk_buff *skb, __be16 *port, __be16 new_port)
uh->check = CSUM_MANGLED_0;
} else {
*port = new_port;
- skb->rxhash = 0;
+ skb_clear_hash(skb);
}
}
@@ -348,6 +354,39 @@ static int set_tcp(struct sk_buff *skb, const struct ovs_key_tcp *tcp_port_key)
return 0;
}
+static int set_sctp(struct sk_buff *skb,
+ const struct ovs_key_sctp *sctp_port_key)
+{
+ struct sctphdr *sh;
+ int err;
+ unsigned int sctphoff = skb_transport_offset(skb);
+
+ err = make_writable(skb, sctphoff + sizeof(struct sctphdr));
+ if (unlikely(err))
+ return err;
+
+ sh = sctp_hdr(skb);
+ if (sctp_port_key->sctp_src != sh->source ||
+ sctp_port_key->sctp_dst != sh->dest) {
+ __le32 old_correct_csum, new_csum, old_csum;
+
+ old_csum = sh->checksum;
+ old_correct_csum = sctp_compute_cksum(skb, sctphoff);
+
+ sh->source = sctp_port_key->sctp_src;
+ sh->dest = sctp_port_key->sctp_dst;
+
+ new_csum = sctp_compute_cksum(skb, sctphoff);
+
+ /* Carry any checksum errors through. */
+ sh->checksum = old_csum ^ old_correct_csum ^ new_csum;
+
+ skb_clear_hash(skb);
+ }
+
+ return 0;
+}
+
static int do_output(struct datapath *dp, struct sk_buff *skb, int out_port)
{
struct vport *vport;
@@ -372,8 +411,10 @@ static int output_userspace(struct datapath *dp, struct sk_buff *skb,
const struct nlattr *a;
int rem;
+ BUG_ON(!OVS_CB(skb)->pkt_key);
+
upcall.cmd = OVS_PACKET_CMD_ACTION;
- upcall.key = &OVS_CB(skb)->flow->key;
+ upcall.key = OVS_CB(skb)->pkt_key;
upcall.userdata = NULL;
upcall.portid = 0;
@@ -404,7 +445,7 @@ static int sample(struct datapath *dp, struct sk_buff *skb,
a = nla_next(a, &rem)) {
switch (nla_type(a)) {
case OVS_SAMPLE_ATTR_PROBABILITY:
- if (net_random() >= nla_get_u32(a))
+ if (prandom_u32() >= nla_get_u32(a))
return 0;
break;
@@ -432,6 +473,10 @@ static int execute_set_action(struct sk_buff *skb,
skb->mark = nla_get_u32(nested_attr);
break;
+ case OVS_KEY_ATTR_IPV4_TUNNEL:
+ OVS_CB(skb)->tun_key = nla_data(nested_attr);
+ break;
+
case OVS_KEY_ATTR_ETHERNET:
err = set_eth_addr(skb, nla_data(nested_attr));
break;
@@ -451,6 +496,10 @@ static int execute_set_action(struct sk_buff *skb,
case OVS_KEY_ATTR_UDP:
err = set_udp(skb, nla_data(nested_attr));
break;
+
+ case OVS_KEY_ATTR_SCTP:
+ err = set_sctp(skb, nla_data(nested_attr));
+ break;
}
return err;
@@ -502,6 +551,8 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
case OVS_ACTION_ATTR_SAMPLE:
err = sample(dp, skb, a);
+ if (unlikely(err)) /* skb already freed. */
+ return err;
break;
}
@@ -527,6 +578,7 @@ int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb)
{
struct sw_flow_actions *acts = rcu_dereference(OVS_CB(skb)->flow->sf_acts);
+ OVS_CB(skb)->tun_key = NULL;
return do_execute_actions(dp, skb, acts->actions,
acts->actions_len, false);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 02:43:02 +0000