The PPE RSS hash is generated during PPE receive, based on the packet
content (3 tuples or 5 tuples) and as per the configured RSS seed. The
hash is then used to select the queue to transmit the packet to the
ARM CPU.
This patch initializes the RSS hash settings that are used to generate
the hash for the packet during PPE packet receive.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://patch.msgid.link/20250818-qcom_ipq_ppe-v8-10-1d4ff641fce9@quicinc.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
PPE service code is a special code (0-255) that is defined by PPE for
PPE's packet processing stages, as per the network functions required
for the packet.
For packet being sent out by ARM cores on Ethernet ports, The service
code 1 is used as the default service code. This service code is used
to bypass most of packet processing stages of the PPE before the packet
transmitted out PPE port, since the software network stack has already
processed the packet.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://patch.msgid.link/20250818-qcom_ipq_ppe-v8-8-1d4ff641fce9@quicinc.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Configure unicast and multicast hardware queues for the PPE ports to
enable packet forwarding between the ports.
Each PPE port is assigned with a range of queues. The queue ID selection
for the packet is decided by the queue base and queue offset that is
configured based on the internal priority and the RSS hash value of the
packet.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://patch.msgid.link/20250818-qcom_ipq_ppe-v8-7-1d4ff641fce9@quicinc.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The BM (Buffer Management) config controls the pause frame generated
on the PPE port. There are maximum 15 BM ports and 4 groups supported,
all BM ports are assigned to group 0 by default. The number of hardware
buffers configured for the port influence the threshold of the flow
control for that port.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://patch.msgid.link/20250818-qcom_ipq_ppe-v8-4-1d4ff641fce9@quicinc.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
