2016-07-20 15:13, Ananyev, Konstantin: > Hi Thomas, > > > Hi, > > > > This patch announces an interesting change in the DPDK design. > > > > 2016-07-20 16:24, Tomasz Kulasek: > > > This is an ABI deprecation notice for DPDK 16.11 in librte_ether about > > > changes in rte_eth_dev and rte_eth_desc_lim structures. > > > > > > In 16.11, we plan to introduce rte_eth_tx_prep() function to do > > > necessary preparations of packet burst to be safely transmitted on > > > device for desired HW offloads (set/reset checksum field according to > > > the hardware requirements) and check HW constraints (number of > > > segments per packet, etc). > > > > > > While the limitations and requirements may differ for devices, it > > > requires to extend rte_eth_dev structure with new function pointer > > > "tx_pkt_prep" which can be implemented in the driver to prepare and > > > verify packets, in devices specific way, before burst, what should to > > > prevent application to send malformed packets. > > > > > > Also new fields will be introduced in rte_eth_desc_lim: nb_seg_max and > > > nb_mtu_seg_max, providing an information about max segments in TSO and > > > non TSO packets acceptable by device. > > > > We cannot acknowledge such notice without a prior design discussion. > > Please explain why you plan to work on this change and give a draft of the > > new structures (a RFC patch would be ideal). > > I think it is not really a deprecation note, but announce ABI change for > rte_ethdev.h structures.
An ABI break requires a deprecation notice. So it is :) > The plan is to implement what was proposed & discussed the following thread: > http://dpdk.org/ml/archives/dev/2015-September/023603.html Please could you summarize it here?
