Re: flow director - perfect match filter

Hi, Poborsky

Please try sending an IP packet (not UDP, TCP or SCTP).

Or you can try to set filter.l4type = RTE_FDIR_L4TYPE_TCP when adding a filter.

I guess it is because the NIC already classify you packet as TCP one.

-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Newman Poborsky
Sent: Thursday, October 30, 2014 11:18 PM
To: dev@dpdk.org
Subject: [dpdk-dev] flow director - perfect match filter

Hi,

I'm not sure this is the right place to post a question like this, but I've been
stuck with the same problem for days now.

I'm trying to use flow director perfect match filters and so far I haven't been
able to get it working. I have tried writing my own simple app (based on given
examples) and I tried adding filter using something as simple as:

//setting the mask to watch for src IP
memset(&fdir_masks, 0x00, sizeof(struct rte_fdir_masks));
fdir_masks.src_ipv4_mask = 0xFFFFFFFF; ret =
rte_eth_dev_fdir_set_masks(portid, &fdir_masks); //adding filter
memset(&filter, 0, sizeof(struct rte_fdir_filter)); filter.ip_src.ipv4_addr =
htonl(ipv4_src); filter.l4type = RTE_FDIR_L4TYPE_NONE; filter.iptype =
RTE_FDIR_IPTYPE_IPV4; ret =
rte_eth_dev_fdir_add_perfect_filter(portid,&filter,3,queue,0);
...


After running this code and using using tcpreplay to push traffic to interface, I
get all the misses in the stats and no matches.  As far as I understand, to
match only on src IP, all rte_fdir_filter elements should be set to 0, and only
src_ip should be masked (with 1's).

After this I tried running testpmd application but also no luck. The commands
I used are:
set_masks_filter 0 only_ip_flow 0 src_mask 0xFFFFFFFF 0x0000 dst_mask
0x00000000 0x0000 flexbytes 0 vlan_id 0 vlan_prio 0 add_perfect_filter 0 ip
src 10.10.10.10 0 dst 0.0.0.0 0 flexbytes 0 vlan 0 queue 1 soft 3

Filter is added but after sending packets to this interface, I only see misses in
stats.

What I am doing wrong?  I've read the docs and looked at API reference but
didn't find anything that could help me.

Configuring flow director filter using ethtool and sending same packets
results in matches, so packets I'm sending should be matched.

Thank you for any help!

Newman P.