Commit 4c6c123c authored by Andy Gospodarek's avatar Andy Gospodarek Committed by David S. Miller
Browse files

bnxt: adding bnxt_rx_agg_pages_xdp for aggregated xdp 



This patch adds a new function that will read pages from the
aggregation ring and create an xdp_buff with frags based on
the entries in the aggregation ring.

Signed-off-by: default avatarAndy Gospodarek <gospo@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 23e4c046

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+31 −0
Original line number Diff line number Diff line
@@ -1131,6 +1131,27 @@ static struct sk_buff *bnxt_rx_agg_pages_skb(struct bnxt *bp, 
	return skb;

}



static u32 bnxt_rx_agg_pages_xdp(struct bnxt *bp,

				 struct bnxt_cp_ring_info *cpr,

				 struct xdp_buff *xdp, u16 idx,

				 u32 agg_bufs, bool tpa)

{

	struct skb_shared_info *shinfo = xdp_get_shared_info_from_buff(xdp);

	u32 total_frag_len = 0;



	if (!xdp_buff_has_frags(xdp))

		shinfo->nr_frags = 0;



	total_frag_len = __bnxt_rx_agg_pages(bp, cpr, shinfo, idx, agg_bufs, tpa);



	if (total_frag_len) {

		xdp_buff_set_frags_flag(xdp);

		shinfo->nr_frags = agg_bufs;

		shinfo->xdp_frags_size = total_frag_len;

	}

	return total_frag_len;

}



static int bnxt_agg_bufs_valid(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,

			       u8 agg_bufs, u32 *raw_cons)

{
@@ -1859,6 +1880,16 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, 


	if (bnxt_xdp_attached(bp, rxr)) {

		bnxt_xdp_buff_init(bp, rxr, cons, &data_ptr, &len, &xdp);

		if (agg_bufs) {

			u32 frag_len = bnxt_rx_agg_pages_xdp(bp, cpr, &xdp,

							     cp_cons, agg_bufs,

							     false);

			if (!frag_len) {

				cpr->sw_stats.rx.rx_oom_discards += 1;

				rc = -ENOMEM;

				goto next_rx;

			}

		}

		xdp_active = true;

	}