Patrick McHardy wrote:
> Saikiran Madugula wrote:
>> br_nf_dev_queue_xmit only checks for ETH_P_IP packets for fragmenting
>> but not
>> VLAN packets. This results in dropping of large VLAN packets. This can be
>> observed when connection tracking is enabled. Connection tracking
>> re-assembles
>> fragmented packets, and these have to be re-fragmented when
>> transmitting out.
>>
>> Signed-off-by: Saikiran Madugula <hummerbliss@xxxxxxxxx>
>> ---
>> net/bridge/br_netfilter.c | 2 +-
>> 1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
>> index 3953ac4..941f702 100644
>> --- a/net/bridge/br_netfilter.c
>> +++ b/net/bridge/br_netfilter.c
>> @@ -790,7 +790,7 @@ static unsigned int br_nf_local_out(unsigned int
>> hook, struct sk_buff *skb,
>>
>> static int br_nf_dev_queue_xmit(struct sk_buff *skb)
>> {
>> - if (skb->protocol == htons(ETH_P_IP) &&
>> + if ((skb->protocol == htons(ETH_P_IP) || IS_VLAN_IP(skb)) &&
>> skb->len > skb->dev->mtu &&
>> !skb_is_gso(skb))
>> return ip_fragment(skb, br_dev_queue_push_xmit);
>
> Please add an additional check for skb->nfct != NULL to make sure
> that this only refragments packets defragmented by conntrack.
Thanks for the feedback, skb->nfct is present only if CONFIG_NF_CONNTRACK or
CONFIG_NF_CONNTRACK_MODULE is defined. Was wondering if the entire check before
ip_fragment is necessary if NF_CONNTRACK is not defined. If not, I will post
updated patch as per your suggestion.
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