On 11/3/25 10:35 PM, Jason Wang wrote:

On Tue, Nov 4, 2025 at 6:56 AM Daniel Jurgens [off-list ref] wrote:

quoted

Add support for IP_USER type rules from ethtool.

Example:
$ ethtool -U ens9 flow-type ip4 src-ip 192.168.51.101 action -1
Added rule with ID 1

The example rule will drop packets with the source IP specified.

Signed-off-by: Daniel Jurgens <redacted>
Reviewed-by: Parav Pandit <redacted>
Reviewed-by: Shahar Shitrit <redacted>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---

quoted

-       memcpy(eth_m, &fs->m_u.ether_spec, sizeof(*eth_m));
-       memcpy(eth_k, &fs->h_u.ether_spec, sizeof(*eth_k));
+       if (num_hdrs > 1) {
+               eth_m->h_proto = cpu_to_be16(0xffff);
+               eth_k->h_proto = cpu_to_be16(ETH_P_IP);

Do we need to check IPV6 here?

That comes in a subsequent patch. None of this is actually reachable
until we set the get operations in the last patch. So I think it's fine.

Thanks