Thread (7 messages) 7 messages, 2 authors, 2022-12-28
STALE1252d REVIEWED: 5 (3M)
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[PATCH net 2/5] bnxt_en: Simplify bnxt_xdp_buff_init()

From: Michael Chan <michael.chan@broadcom.com>
Date: 2022-12-27 03:20:31
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, David S. Miller, Jesper Dangaard Brouer, John Fastabend

bnxt_xdp_buff_init() does not modify the data_ptr or the len parameters,
so no need to pass in the addresses of these parameters.

Fixes: b231c3f3414c ("bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff")
Reviewed-by: Andy Gospodarek <redacted>
Reviewed-by: Somnath Kotur <redacted>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 2 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 6 +++---
 drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 93d32b333007..b8639b7e6b2b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1925,7 +1925,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
 	dma_addr = rx_buf->mapping;
 
 	if (bnxt_xdp_attached(bp, rxr)) {
-		bnxt_xdp_buff_init(bp, rxr, cons, &data_ptr, &len, &xdp);
+		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,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index c3065ec0a479..1847f191577d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -177,7 +177,7 @@ bool bnxt_xdp_attached(struct bnxt *bp, struct bnxt_rx_ring_info *rxr)
 }
 
 void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
-			u16 cons, u8 **data_ptr, unsigned int *len,
+			u16 cons, u8 *data_ptr, unsigned int len,
 			struct xdp_buff *xdp)
 {
 	struct bnxt_sw_rx_bd *rx_buf;
@@ -191,13 +191,13 @@ void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
 	offset = bp->rx_offset;
 
 	mapping = rx_buf->mapping - bp->rx_dma_offset;
-	dma_sync_single_for_cpu(&pdev->dev, mapping + offset, *len, bp->rx_dir);
+	dma_sync_single_for_cpu(&pdev->dev, mapping + offset, len, bp->rx_dir);
 
 	if (bp->xdp_has_frags)
 		buflen = BNXT_PAGE_MODE_BUF_SIZE + offset;
 
 	xdp_init_buff(xdp, buflen, &rxr->xdp_rxq);
-	xdp_prepare_buff(xdp, *data_ptr - offset, offset, *len, false);
+	xdp_prepare_buff(xdp, data_ptr - offset, offset, len, false);
 }
 
 void bnxt_xdp_buff_frags_free(struct bnxt_rx_ring_info *rxr,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
index 505911ae095d..2bbdb8e7c506 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
@@ -27,7 +27,7 @@ int bnxt_xdp_xmit(struct net_device *dev, int num_frames,
 bool bnxt_xdp_attached(struct bnxt *bp, struct bnxt_rx_ring_info *rxr);
 
 void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
-			u16 cons, u8 **data_ptr, unsigned int *len,
+			u16 cons, u8 *data_ptr, unsigned int len,
 			struct xdp_buff *xdp);
 void bnxt_xdp_buff_frags_free(struct bnxt_rx_ring_info *rxr,
 			      struct xdp_buff *xdp);
-- 
2.18.1

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