mirror of
https://github.com/lkl/linux.git
synced 2025-12-19 16:13:19 +09:00
1c9ba9c146
This patch is inspired from the multi-buffer support in non-zc path for i40e as well as from the patch to support zc on ice. Each subsequent frag is added to skb_shared_info of the first frag for possible xdp_prog use as well to xsk buffer list for accessing the buffers in af_xdp. For XDP_PASS, new pages are allocated for frags and contents are copied from memory backed by xsk_buff_pool. Replace next_to_clean with next_to_process as done in non-zc path and advance it for every buffer and change the semantics of next_to_clean to point to the first buffer of a packet. Driver will use next_to_process in the same way next_to_clean was used previously. For the non multi-buffer case, next_to_process and next_to_clean will always be the same since each packet consists of a single buffer. Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com> Link: https://lore.kernel.org/r/20230719132421.584801-14-maciej.fijalkowski@intel.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>