diff options
| author | Martin Varghese <martin.varghese@nokia.com> | 2019-12-05 05:57:22 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-12-04 17:11:25 -0800 |
| commit | d04ac224b1688f005a84f764cfe29844f8e9da08 (patch) | |
| tree | 5cfc5f7aa731b446d53c6f429409c9a2c98c0145 | |
| parent | 099ffd7eddfe03b9b5b43e1f4ffece99121dd7ba (diff) | |
net: Fixed updating of ethertype in skb_mpls_push()
The skb_mpls_push was not updating ethertype of an ethernet packet if
the packet was originally received from a non ARPHRD_ETHER device.
In the below OVS data path flow, since the device corresponding to
port 7 is an l3 device (ARPHRD_NONE) the skb_mpls_push function does
not update the ethertype of the packet even though the previous
push_eth action had added an ethernet header to the packet.
recirc_id(0),in_port(7),eth_type(0x0800),ipv4(tos=0/0xfc,ttl=64,frag=no),
actions:push_eth(src=00:00:00:00:00:00,dst=00:00:00:00:00:00),
push_mpls(label=13,tc=0,ttl=64,bos=1,eth_type=0x8847),4
Fixes: 8822e270d697 ("net: core: move push MPLS functionality from OvS to core helper")
Signed-off-by: Martin Varghese <martin.varghese@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/skbuff.h | 2 | ||||
| -rw-r--r-- | net/core/skbuff.c | 4 | ||||
| -rw-r--r-- | net/openvswitch/actions.c | 3 | ||||
| -rw-r--r-- | net/sched/act_mpls.c | 3 |
4 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 5aea72fe8498..e9133bcf0544 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3529,7 +3529,7 @@ int __skb_vlan_pop(struct sk_buff *skb, u16 *vlan_tci); int skb_vlan_pop(struct sk_buff *skb); int skb_vlan_push(struct sk_buff *skb, __be16 vlan_proto, u16 vlan_tci); int skb_mpls_push(struct sk_buff *skb, __be32 mpls_lse, __be16 mpls_proto, - int mac_len); + int mac_len, bool ethernet); int skb_mpls_pop(struct sk_buff *skb, __be16 next_proto, int mac_len, bool ethernet); int skb_mpls_update_lse(struct sk_buff *skb, __be32 mpls_lse); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 312e80e86898..973a71f4bc89 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -5484,7 +5484,7 @@ static void skb_mod_eth_type(struct sk_buff *skb, struct ethhdr *hdr, * Returns 0 on success, -errno otherwise. */ int skb_mpls_push(struct sk_buff *skb, __be32 mpls_lse, __be16 mpls_proto, - int mac_len) + int mac_len, bool ethernet) { struct mpls_shim_hdr *lse; int err; @@ -5515,7 +5515,7 @@ int skb_mpls_push(struct sk_buff *skb, __be32 mpls_lse, __be16 mpls_proto, lse->label_stack_entry = mpls_lse; skb_postpush_rcsum(skb, lse, MPLS_HLEN); - if (skb->dev && skb->dev->type == ARPHRD_ETHER) + if (ethernet) skb_mod_eth_type(skb, eth_hdr(skb), mpls_proto); skb->protocol = mpls_proto; diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c index 91e210061bb3..4c8395462303 100644 --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -166,7 +166,8 @@ static int push_mpls(struct sk_buff *skb, struct sw_flow_key *key, int err; err = skb_mpls_push(skb, mpls->mpls_lse, mpls->mpls_ethertype, - skb->mac_len); + skb->mac_len, + ovs_key_mac_proto(key) == MAC_PROTO_ETHERNET); if (err) return err; diff --git a/net/sched/act_mpls.c b/net/sched/act_mpls.c index a7d856203af1..be3f215cd027 100644 --- a/net/sched/act_mpls.c +++ b/net/sched/act_mpls.c @@ -83,7 +83,8 @@ static int tcf_mpls_act(struct sk_buff *skb, const struct tc_action *a, break; case TCA_MPLS_ACT_PUSH: new_lse = tcf_mpls_get_lse(NULL, p, !eth_p_mpls(skb->protocol)); - if (skb_mpls_push(skb, new_lse, p->tcfm_proto, mac_len)) + if (skb_mpls_push(skb, new_lse, p->tcfm_proto, mac_len, + skb->dev && skb->dev->type == ARPHRD_ETHER)) goto drop; break; case TCA_MPLS_ACT_MODIFY: |