On 12/29/2015 3:24 PM, Matan Barak wrote:
The mlx4 driver uses a special QP to implement the GSI QP. This kind of QP allows to build the InfiniBand headers in SW to be put before the payload that comes in with the WR. The mlx4 HW builds the packet, calculates the ICRC and puts it at the end of the payload. This ICRC calculation however depends on the QP configuration which is determined when QP is modified (roce_mode during INIT->RTR). On the other hand, ICRC verification when packet is received does to depend on this configuration.
I don't understand the part of the sentence saying "when packet is received does to depend on this configuration"
maybe some typo/s there?
Therefore, using 2 GSI QPs for send (one for each RoCE version) and 1 GSI QP for receive are required.
s/2/two/ and s/1/one/ please Or. -- 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
