[v3,net-next,0/2] add multi-buff support for xdp running in generic mode

Message

Lorenzo Bianconi Dec. 1, 2023, 1:48 p.m. UTC

Introduce multi-buffer support for xdp running in generic mode not always
linearizing the skb in netif_receive_generic_xdp routine.

Changes since v2:
- rely on napi_alloc_frag() and napi_build_skb() to build the new skb
Changes since v1:
- explicitly keep the skb segmented in netif_skb_check_for_generic_xdp() and
  do not rely on pskb_expand_head()

Lorenzo Bianconi (2):
  xdp: rely on skb pointer reference in do_xdp_generic and
    netif_receive_generic_xdp
  xdp: add multi-buff support for xdp running in generic mode

 drivers/net/tun.c         |   4 +-
 include/linux/netdevice.h |   2 +-
 net/core/dev.c            | 165 +++++++++++++++++++++++++++++++-------
 3 files changed, 137 insertions(+), 34 deletions(-)