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). Thanks
