#include "datapath.h"
#include "table.h"
#include "tunnel.h"
+#include "vlan.h"
#include "vport.h"
#include "vport-generic.h"
#include "vport-internal_dev.h"
skb_dst_drop(skb);
nf_reset(skb);
+ skb_clear_rxhash(skb);
secpath_reset(skb);
ecn_decapsulate(skb);
compute_ip_summed(skb, false);
+ vlan_set_tci(skb, 0);
vport_receive(vport, skb);
}
}
#endif
- total_length = min(total_length, mutable->mtu);
payload_length = total_length - header_length;
nskb = dev_alloc_skb(NET_IP_ALIGN + eth_hdr_len + header_length +
vh->h_vlan_TCI = vlan_eth_hdr(skb)->h_vlan_TCI;
vh->h_vlan_encapsulated_proto = skb->protocol;
- }
+ } else
+ vlan_set_tci(nskb, vlan_get_tci(skb));
skb_reset_mac_header(nskb);
/* Protocol */
{
bool pmtud = mutable->flags & TNL_F_PMTUD;
__be16 frag_off = 0;
- int mtu;
+ int mtu = 0;
+ unsigned int packet_length = skb->len - ETH_HLEN;
+
+ /* Allow for one level of tagging in the packet length. */
+ if (!vlan_tx_tag_present(skb) &&
+ eth_hdr(skb)->h_proto == htons(ETH_P_8021Q))
+ packet_length -= VLAN_HLEN;
if (pmtud) {
+ int vlan_header = 0;
+
frag_off = htons(IP_DF);
+ /* The tag needs to go in packet regardless of where it
+ * currently is, so subtract it from the MTU.
+ */
+ if (vlan_tx_tag_present(skb) ||
+ eth_hdr(skb)->h_proto == htons(ETH_P_8021Q))
+ vlan_header = VLAN_HLEN;
+
mtu = dst_mtu(&rt_dst(rt))
- ETH_HLEN
- mutable->tunnel_hlen
- - (eth_hdr(skb)->h_proto == htons(ETH_P_8021Q) ?
- VLAN_HLEN : 0);
+ - vlan_header;
}
if (skb->protocol == htons(ETH_P_IP)) {
if (pmtud && iph->frag_off & htons(IP_DF)) {
mtu = max(mtu, IP_MIN_MTU);
- if (ntohs(iph->tot_len) > mtu &&
+ if (packet_length > mtu &&
tnl_frag_needed(vport, mutable, skb, mtu,
OVS_CB(skb)->tun_id))
return false;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
else if (skb->protocol == htons(ETH_P_IPV6)) {
- unsigned int packet_length = skb->len - ETH_HLEN
- - (eth_hdr(skb)->h_proto == htons(ETH_P_8021Q) ?
- VLAN_HLEN : 0);
-
/* IPv6 requires PMTUD if the packet is above the minimum MTU. */
if (packet_length > IPV6_MIN_MTU)
frag_off = htons(IP_DF);
* change them from underneath us and we can skip the linearization.
*/
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
- if (unlikely(page_count(skb_shinfo(skb)->frags[0].page) > 1))
+ if (unlikely(page_count(skb_shinfo(skb)->frags[i].page) > 1))
return true;
return false;
goto error_free;
min_headroom = LL_RESERVED_SPACE(rt_dst(rt).dev) + rt_dst(rt).header_len
- + mutable->tunnel_hlen;
+ + mutable->tunnel_hlen
+ + (vlan_tx_tag_present(skb) ? VLAN_HLEN : 0);
+
+ skb = check_headroom(skb, min_headroom);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ goto error;
+ }
if (skb_is_gso(skb)) {
struct sk_buff *nskb;
- /*
- * If we are doing GSO on a pskb it is better to make sure that
- * the headroom is correct now. We will only have to copy the
- * portion in the linear data area and GSO will preserve
- * headroom when it creates the segments. This is particularly
- * beneficial on Xen where we get a lot of GSO pskbs.
- * Conversely, we avoid copying if it is just to get our own
- * writable clone because GSO will do the copy for us.
- */
- if (skb_headroom(skb) < min_headroom) {
- skb = check_headroom(skb, min_headroom);
- if (IS_ERR(skb)) {
- err = PTR_ERR(skb);
- goto error;
- }
- }
-
nskb = skb_gso_segment(skb, 0);
kfree_skb(skb);
if (IS_ERR(nskb)) {
}
skb = nskb;
- } else {
- skb = check_headroom(skb, min_headroom);
- if (IS_ERR(skb)) {
- err = PTR_ERR(skb);
- goto error;
- }
-
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- /*
- * Pages aren't locked and could change at any time.
- * If this happens after we compute the checksum, the
- * checksum will be wrong. We linearize now to avoid
- * this problem.
- */
- if (unlikely(need_linearize(skb))) {
- err = __skb_linearize(skb);
- if (unlikely(err))
- goto error_free;
- }
-
- err = skb_checksum_help(skb);
+ } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ /* Pages aren't locked and could change at any time.
+ * If this happens after we compute the checksum, the
+ * checksum will be wrong. We linearize now to avoid
+ * this problem.
+ */
+ if (unlikely(need_linearize(skb))) {
+ err = __skb_linearize(skb);
if (unlikely(err))
goto error_free;
- } else if (skb->ip_summed == CHECKSUM_COMPLETE)
- skb->ip_summed = CHECKSUM_NONE;
- }
+ }
+
+ err = skb_checksum_help(skb);
+ if (unlikely(err))
+ goto error_free;
+ } else if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
return skb;
u8 tos;
/* Validate the protocol headers before we try to use them. */
- if (skb->protocol == htons(ETH_P_8021Q)) {
+ if (skb->protocol == htons(ETH_P_8021Q) &&
+ !vlan_tx_tag_present(skb)) {
if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
goto error_free;
nf_reset(skb);
secpath_reset(skb);
skb_dst_drop(skb);
+ skb_clear_rxhash(skb);
/* Offloading */
skb = handle_offloads(skb, mutable, rt);
struct sk_buff *next_skb = skb->next;
skb->next = NULL;
+ if (unlikely(vlan_deaccel_tag(skb)))
+ goto next;
+
if (likely(cache)) {
skb_push(skb, cache->len);
memcpy(skb->data, get_cached_header(cache), cache->len);
}
vport_gen_rand_ether_addr(mutable->eth_addr);
- mutable->mtu = ETH_DATA_LEN;
get_random_bytes(&initial_frag_id, sizeof(int));
atomic_set(&tnl_vport->frag_id, initial_frag_id);
old_mutable = rtnl_dereference(tnl_vport->mutable);
mutable->seq = old_mutable->seq + 1;
memcpy(mutable->eth_addr, old_mutable->eth_addr, ETH_ALEN);
- mutable->mtu = old_mutable->mtu;
/* Parse the others configured by userspace. */
err = tnl_set_config(options, tnl_vport->tnl_ops, vport, mutable);
return 0;
}
-int tnl_set_mtu(struct vport *vport, int mtu)
-{
- struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- struct tnl_mutable_config *mutable;
-
- mutable = kmemdup(rtnl_dereference(tnl_vport->mutable),
- sizeof(struct tnl_mutable_config), GFP_KERNEL);
- if (!mutable)
- return -ENOMEM;
-
- mutable->mtu = mtu;
- assign_config_rcu(vport, mutable);
-
- return 0;
-}
-
int tnl_set_addr(struct vport *vport, const unsigned char *addr)
{
struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
return rcu_dereference_rtnl(tnl_vport->mutable)->eth_addr;
}
-int tnl_get_mtu(const struct vport *vport)
-{
- const struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- return rcu_dereference_rtnl(tnl_vport->mutable)->mtu;
-}
-
void tnl_free_linked_skbs(struct sk_buff *skb)
{
if (unlikely(!skb))
git://git.onelab.eu / sliver-openvswitch.git / blobdiff