The proper way to drop this kind of CQE is advancing rxq tail
without indicating the packet to the upper network layer.
MFC after: 2 weeks
Sponsored by: Microsoft
RX fencing allows the driver to know that any prior change to the RQs has
finished, e.g. when the RQs are disabled/enabled or the hashkey/indirection
table are changed, RX fencing is required.
Remove the previous 'sleep' workaround and add the real support for
RX fencing as the PF driver supports the MANA_FENCE_RQ request now (any
old PF driver not supporting the request won't be used in production).
MFC after: 2 weeks
Sponsored by: Microsoft
- In mana_create_txq(), if test fails we must free some resources
as in all the other handling paths of this function.
- In mana_gd_read_cqe(), add warning log in case of CQE read
overflow, instead of failing silently.
- Fix error handling in mana_create_rxq() when
cq->gdma_id >= gc->max_num_cqs.
- In mana_init_port(), use the correct port index rather than 0.
- In mana_hwc_create_wq(), If allocating the DMA buffer fails,
mana_hwc_destroy_wq was called without previously storing the
pointer to the queue. In order to avoid leaking the pointer to
the queue, store it as soon as it is allocated.
MFC after: 2 weeks
Sponsored by: Microsoft
Currently when the HWC creation fails, the error handling is flawed,
e.g. if mana_hwc_create_channel() -> mana_hwc_establish_channel() fails,
the resources acquired in mana_hwc_init_queues() is not released.
Enhance mana_hwc_destroy_channel() to do the proper cleanup work and
call it accordingly.
MFC after: 2 weeks
Sponsored by: Microsoft
-Each CQ start task queue to poll when completion happens.
This means every rx and tx queue has its own cleanup task
thread to poll the completion.
- Arm EQ everytime no matter it is mana or hwc. CQ arming
depends on the budget.
- Fix a warning in mana_poll_tx_cq() when cqe_read is 0.
- Move cqe_poll from EQ to CQ struct.
- Support EQ sharing up to 8 vPorts.
- Ease linkdown message from mana_info to mana_dbg.
Tested by: whu
MFC after: 2 weeks
Sponsored by: Microsoft
MANA is the new network adapter from Microsoft which will be available
in Azure public cloud. It provides SRIOV NIC as virtual function to
guest OS running on Hyper-V.
The code can be divided into two major parts. Gdma_main.c is the one to
bring up the hardware board and drives all underlying hardware queue
infrastructure. Mana_en.c contains all main ethernet driver code.
It has only tested and supported on amd64 architecture.
PR: 256336
Reviewed by: decui@microsoft.com
Tested by: whu
MFC after: 2 week
Relnotes: yes
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D31150
