For RX: if corresponding QP is not supported, it will not validate the csum, but packets are still received normally. For TX: if corresponding QP is not supported for csum calculation and user application sets the IBV_SEND_IP_CSUM flag, it will return error.
-----Original Message----- From: Christoph Lameter [mailto:c...@linux.com] Sent: Wednesday, September 16, 2015 12:07 PM To: Bodong Wang Cc: dledf...@redhat.com; linux-rdma@vger.kernel.org; Bodong Wang; Or Gerlitz; jguntho...@obsidianresearch.com; Moshe Lazer; Haggai Eran; Matan Barak Subject: Re: [PATCH 1/3] IB/core: Add support of checksum capability reporting in ib verbs On Wed, 16 Sep 2015, Bodong Wang wrote: > A new filed csum_cap is added to both ib_query_device. It contains two > members: > eth_csum_cap and ib_csum_cap, indicates checksum capability of > Ethernet and Infiniband link layer respectively for different QP types. > > Current checksum caps use the following enum members: > - IB_CSUM_SUPPORT_UD: device supports validation/calculation of csum for UD > QP. > - IB_CSUM_SUPPORT_RAW: device supports validation/calculation of csum for raw > QP. A combination? Is it possible then to also support calculation without validation? Maybe we want to receive packets that do have invalid checksums. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
