net: thunderx: Add XDP frame size

To help reviewers these are the defines related to RCV_FRAG_LEN

 #define DMA_BUFFER_LEN	1536 /* In multiples of 128bytes */
 #define RCV_FRAG_LEN	(SKB_DATA_ALIGN(DMA_BUFFER_LEN + NET_SKB_PAD) + \
			 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: Sunil Goutham <sgoutham@marvell.com>
Cc: Robert Richter <rrichter@marvell.com>
Link: https://lore.kernel.org/bpf/158945342402.97035.12649844447148990032.stgit@firesoul

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index b4b33368698f57590e3727934786ef321526c16f..2ba0ce115e63a887f161566726f464fd50677a45 100644 (file)
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -552,6 +552,7 @@ static inline bool nicvf_xdp_rx(struct nicvf *nic, struct bpf_prog *prog,
        xdp_set_data_meta_invalid(&xdp);
        xdp.data_end = xdp.data + len;
        xdp.rxq = &rq->xdp_rxq;
        xdp_set_data_meta_invalid(&xdp);
        xdp.data_end = xdp.data + len;
        xdp.rxq = &rq->xdp_rxq;

+       xdp.frame_sz = RCV_FRAG_LEN + XDP_PACKET_HEADROOM;

        orig_data = xdp.data;
 
        rcu_read_lock();
        orig_data = xdp.data;
 
        rcu_read_lock();