Hi Ferruh, > -----Original Message----- > From: Ferruh Yigit <ferruh.yi...@amd.com> > Sent: Tuesday, October 10, 2023 2:06 PM > > On 9/26/2023 12:37 PM, Ori Kam wrote: > > rte_flow supports insert by index table[1]. > > > > Using the above table, the application can create rules > > that are based on hash. > > For example application can create the following logic in order > > to create load balancing: > > 1. Create insert by index table with 2 rules, that hashes based on dmac > > 2. Insert to index 0 a rule that sends the traffic to port A. > > 3. Insert to index 1 a rule that sends the traffic to port B. > > > > Let's also assume that before this table, there is a 5 tuple > > match table that jumps to the above table. > > > > So each packet that matches one of the 5 tuple rules is RSSed > > to port A or B, based on dmac hash. > > > > The issue arises when there is a miss on the 5 tuple table, > > which resulted due to the packet being the first packet of this flow, or > > fragmented packet or any other reason. > > In this case, the application must calculate what would be the > > hash calculated by the HW so it can send the packet to the correct > > port. > > > > This new API allows applications to calculate the hash value of a given > > packet for a given table. > > > > [1] - http://patches.dpdk.org/project/dpdk/patch/20230208030624.78465-2- > akozy...@nvidia.com/ > > > > Signed-off-by: Ori Kam <or...@nvidia.com> > > --- > > app/test-pmd/cmdline_flow.c | 86 > +++++++++++++++++++++++++++++++++++- > > app/test-pmd/config.c | 54 ++++++++++++++++++++++ > > app/test-pmd/testpmd.h | 2 + > > lib/ethdev/rte_flow.c | 21 +++++++++ > > lib/ethdev/rte_flow.h | 32 ++++++++++++++ > > lib/ethdev/rte_flow_driver.h | 5 +++ > > lib/ethdev/version.map | 1 + > > 7 files changed, 200 insertions(+), 1 deletion(-) > > > > This is a new rte_flow API but unfortunately there isn't any > review/comment, at least it is experimental API. If there is no > objection/discussion in next few days, I will merge the feature. >
Thanks, > Probably it will be another rte flow feature that only NVIDIA knows and > uses. While mentioned from using, is the driver update for the feature > planned for this release? > Yes, I hope to send the mlx5 patches in a few days. > > Meanwhile, can you please update the documentation, `rte_flow.rst` and > `testpmd_funcs.rst`? > Also can you please rebase on top of latest next-net, this patch > conflicts with merged group set miss action feature. Sure
