From: Jesper Dangaard Brouer <brouer@redhat.com>
Date: Thu, 14 May 2020 12:49:07 +0200
Subject: bnxt: Add XDP frame size to driver
Patch-mainline: v5.8-rc1
Git-commit: 63fe91ab3d1c5c0b4497b993b8eeaa54f6688d53
References: jsc#SLE-15075

This driver uses full PAGE_SIZE pages when XDP is enabled.

In case of XDP uses driver uses __bnxt_alloc_rx_page which does full
page DMA-map. Thus, xdp_adjust_tail grow is DMA compliant for XDP_TX
action that does DMA-sync.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Link: https://lore.kernel.org/bpf/158945334769.97035.13437970179897613984.stgit@firesoul
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -138,6 +138,7 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct
 	xdp_set_data_meta_invalid(&xdp);
 	xdp.data_end = *data_ptr + *len;
 	xdp.rxq = &rxr->xdp_rxq;
+	xdp.frame_sz = PAGE_SIZE; /* BNXT_RX_PAGE_MODE(bp) when XDP enabled */
 	orig_data = xdp.data;
 
 	rcu_read_lock();