Server kernel is 4.14.13-1.el7.elrepo.x86_64. The rdma-core is v16. Parameter "log_num_mgm_entry_size" is set to "-1" So I don't know why testpmd still runs with same error:
PMD: net_mlx4: 0xda13c0: cannot attach flow rules (code 95, "Operation not supported"), flow error type 2, cause 0x7f2869cdab80, message: flow rule rejected by device /Regards, Timur On Thu, Jan 18, 2018 at 6:05 PM, Adrien Mazarguil <[email protected]> wrote: > On Thu, Jan 18, 2018 at 03:11:16PM +0300, Timur Bogdanov wrote: >> Yes, the problem was in this parameter and after changing it to "-1" >> testpmd application has been started successfully. >> >> BUT, it started successfully only on server where Mellanox OFED is installed. >> >> On another server a rdma-core was installed from sources. (rpm's were >> built and installed) >> I also changed the value of log_num_mgm_entry_size parameter to "-1" >> and restarted a server (since where is no openibd service on this >> server) and got the same error. >> Maybe mlx4_core kernel module parameter should be changed in some >> other config file? > > In case MLNX_OFED is *not* installed, do both rdma-core and kernel version > meet the minimum requirements? > > - rdma-core v15 > - Linux 4.14 > > Note while the above versions are fine for mlx5 (ConnectX-4, ConnectX-5), > they provide reduced performance and RSS capabilities for mlx4 (ConnectX-3), > for which I recommend to use at least: > > - rdma-core v16 > - Linux 4.15 (not released yet, 4.15-rc8 will do in the meantime) > >> Anyway, I can also install and use OFED instead of RDMA but the RDMA >> is pointed as recommended on instructions page >> "http://dpdk.org/doc/guides/nics/mlx4.html"; and it is interesting to >> bring it to working state. >> /Regards, Timur > > rdma-core requires an up-to-date kernel. If this can't be satisfied, > MLNX_OFED is the only alternative (the mlnx-ofa_kernel package). > >> On Thu, Jan 18, 2018 at 11:48 AM, Adrien Mazarguil >> <[email protected]> wrote: >> > On Tue, Jan 16, 2018 at 06:59:31PM +0300, Timur Bogdanov wrote: >> >> Hi, >> >> >> >> I'm trying to use dpdk with Mellanox ConnectX-3 Pro NIC. >> >> I built PMD for it according to instructions on >> >> "http://dpdk.org/doc/guides/nics/mlx4.html"; and tried to launch >> >> testpmd app but got following error: >> > <snip> >> >> PMD: net_mlx4: 0xda13c0: cannot attach flow rules (code 95, "Operation >> >> not supported"), flow error type 2, cause 0x7f2869cdab80, message: >> >> flow rule rejected by device >> >> >> >> Fail to start port 0 >> > <snip> >> >> What can be the reason of testpmd does not start correctly? >> > >> > Did you provide by any chance -7 instead of -1 as a value for >> > mlx4_core.ko's >> > log_num_mgm_entry_size parameter (as recommended by the above >> > documentation)? >> > >> > Timothy (CC'ed) reported that -7 does not quite work with the default flow >> > rules (too many limitations) and results in the above error message. -1 >> > should be used, -7 is only for specific use cases and should probably not >> > even be documented in this file. >> > >> > -- >> > Adrien Mazarguil >> > 6WIND > > -- > Adrien Mazarguil > 6WIND
