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| author | Pravin B Shelar <pshelar@nicira.com> | 2013-06-13 11:11:44 -0700 |
|---|---|---|
| committer | Jesse Gross <jesse@nicira.com> | 2013-06-14 15:09:12 -0700 |
| commit | b34df5e805a6e98cae0bc5bc80c1b52d9ff811de (patch) | |
| tree | cc8d94ee92741fe21380180aeff3a6f12bb44adb /net | |
| parent | 45bfa52e36ef016b789eca73c7847db3f7b4742d (diff) | |
| download | op-kernel-dev-b34df5e805a6e98cae0bc5bc80c1b52d9ff811de.zip op-kernel-dev-b34df5e805a6e98cae0bc5bc80c1b52d9ff811de.tar.gz | |
openvswitch: make skb->csum consistent with rest of networking stack.
Following patch keeps skb->csum correct across ovs.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/openvswitch/actions.c | 4 | ||||
| -rw-r--r-- | net/openvswitch/flow.c | 3 | ||||
| -rw-r--r-- | net/openvswitch/vport-internal_dev.c | 1 | ||||
| -rw-r--r-- | net/openvswitch/vport-netdev.c | 2 | ||||
| -rw-r--r-- | net/openvswitch/vport.h | 7 |
5 files changed, 17 insertions, 0 deletions
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c index 894b6cb..596d637 100644 --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -130,9 +130,13 @@ static int set_eth_addr(struct sk_buff *skb, if (unlikely(err)) return err; + skb_postpull_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2); + memcpy(eth_hdr(skb)->h_source, eth_key->eth_src, ETH_ALEN); memcpy(eth_hdr(skb)->h_dest, eth_key->eth_dst, ETH_ALEN); + ovs_skb_postpush_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2); + return 0; } diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index 33df091..fca4833 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -618,6 +618,9 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key, memcpy(key->eth.dst, eth->h_dest, ETH_ALEN); __skb_pull(skb, 2 * ETH_ALEN); + /* We are going to push all headers that we pull, so no need to + * update skb->csum here. + */ if (vlan_tx_tag_present(skb)) key->eth.tci = htons(skb->vlan_tci); diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c index 84e0a03..e284c7e 100644 --- a/net/openvswitch/vport-internal_dev.c +++ b/net/openvswitch/vport-internal_dev.c @@ -221,6 +221,7 @@ static int internal_dev_recv(struct vport *vport, struct sk_buff *skb) skb->dev = netdev; skb->pkt_type = PACKET_HOST; skb->protocol = eth_type_trans(skb, netdev); + skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN); netif_rx(skb); diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c index 4371221..40de815 100644 --- a/net/openvswitch/vport-netdev.c +++ b/net/openvswitch/vport-netdev.c @@ -49,6 +49,8 @@ static void netdev_port_receive(struct vport *vport, struct sk_buff *skb) return; skb_push(skb, ETH_HLEN); + ovs_skb_postpush_rcsum(skb, skb->data, ETH_HLEN); + ovs_vport_receive(vport, skb); return; diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h index 1cef5cd..293278c 100644 --- a/net/openvswitch/vport.h +++ b/net/openvswitch/vport.h @@ -192,4 +192,11 @@ void ovs_vport_record_error(struct vport *, enum vport_err_type err_type); extern const struct vport_ops ovs_netdev_vport_ops; extern const struct vport_ops ovs_internal_vport_ops; +static inline void ovs_skb_postpush_rcsum(struct sk_buff *skb, + const void *start, unsigned int len) +{ + if (skb->ip_summed == CHECKSUM_COMPLETE) + skb->csum = csum_add(skb->csum, csum_partial(start, len, 0)); +} + #endif /* vport.h */ |
