> Rework stmmac_rx() to build the xdp_buff from all the descriptors that make > up a frame, so the XDP program runs on the whole (possibly fragmented) > packet instead of the first buffer only. Fix possible rx_q state leaks > when closing/opening the interface. > > Note that an XDP program still cannot be attached with an MTU larger than > ETH_DATA_LEN and SPH is disabled while XDP is enabled, so an ordinary > frame fits in a single buffer. The multi-buffer path is exercised by > frames that do span several descriptors (for example jumbo frames the MAC > admits through its jumbo-enable bit) and is groundwork for extending XDP > to jumbo/SPH; it does not enable XDP jumbo support by itself. I will fix issues reported by sashiko in v5. Regards, Lorenzo > > --- > Changes in v4: > - Reset in_progress flag when the packet is fully consumed. > - Advetise NETDEV_XDP_ACT_RX_SG capability. > - Link to v3: https://lore.kernel.org/r/20261004-stmmac-rx-mb-v3-0-50fa171af9ec@oss.qualcomm.com > > Changes in v3: > - Return secondary page in case of error. > - Introduce stmmac_xdp_shrink_tail() to remove the ethernet FCS. > - Add patch 'net: stmmac: take ownership of saved RX state at poll > entry' from James. > - Link to v2: https://lore.kernel.org/r/20260921-stmmac-rx-mb-v2-1-6e826e1ff306@oss.qualcomm.com > > Changes in v2: > - Rely on xdp_buff_add_frag() to create xdp fragments > - Fix bugs in rx_q state recording > - Fix the corner case where we receive more than MAX_SKB_FRAGS fragments > - Cosmetics > - Link to v1: https://lore.kernel.org/r/20260918-stmmac-rx-mb-v1-1-0b4517d404af@oss.qualcomm.com > > --- > James Hilliard (1): > net: stmmac: take ownership of saved RX state at poll entry > > Lorenzo Bianconi (1): > net: stmmac: rework stmmac_rx to support XDP rx multi-buff > > drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 +- > drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 390 ++++++++++++++-------- > 2 files changed, 250 insertions(+), 143 deletions(-) > --- > base-commit: a5e7d8e446af9803e37a3b6a4d416fb41178348f > change-id: 20260918-stmmac-rx-mb-16469a2714ea > > Best regards, > -- > Lorenzo Bianconi >