[PATCH net-next v2 02/33] bnxt: add XDP frame size to driver
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From: Jesper Dangaard Brouer <hidden>
Date: 2020-04-30 11:20:45
Also in:
bpf
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest, xdp (express data path) · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Alexei Starovoitov, Daniel Borkmann, Jesper Dangaard Brouer, John Fastabend
Status: Superseded by v4 (posted 2020-05-14). [go to v4]
Revision v2 (4 revisions archived); 1 review trailer.
Revisions (4)
- v1 re-posted go to this post
- v2 current [diff against previous] re-posted current
- v3 [diff against previous]
- v4 [diff against previous]
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.
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Andy Gospodarek <redacted>
Signed-off-by: Jesper Dangaard Brouer <redacted>
Reviewed-by: Andy Gospodarek <redacted>
---
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index c6f6f2033880..5e3b4a3b69ea 100644
--- 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 bnxt_rx_ring_info *rxr, u16 cons, 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();