netdev - [PATCH net-next 02/11] bnxt: add flag to denote that an xdp program is currently attached

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1647759473-2414-3-git-send-email-michael.chan@broadcom.com>
Date:   Sun, 20 Mar 2022 02:57:44 -0400
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, kuba@...nel.org, gospo@...adcom.com
Subject: [PATCH net-next 02/11] bnxt: add flag to denote that an xdp program is currently attached

From: Andy Gospodarek <gospo@...adcom.com>

This will be used to determine if bnxt_rx_xdp should be called
rather than calling it every time.

Signed-off-by: Andy Gospodarek <gospo@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 21d5c76b1e70..b7d7ee775fdc 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1729,6 +1729,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
 	struct bnxt_sw_rx_bd *rx_buf;
 	unsigned int len;
 	u8 *data_ptr, agg_bufs, cmp_type;
+	bool xdp_active = false;
 	dma_addr_t dma_addr;
 	struct sk_buff *skb;
 	struct xdp_buff xdp;
@@ -1842,11 +1843,17 @@ 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);
+		xdp_active = true;
+	}
+
+	/* skip running XDP prog if there are aggregation bufs */
+	if (!agg_bufs && xdp_active) {
 		if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &len, event)) {
 			rc = 1;
 			goto next_rx;
 		}
 	}
+
 	if (len <= bp->rx_copy_thresh) {
 		skb = bnxt_copy_skb(bnapi, data_ptr, len, dma_addr);
 		bnxt_reuse_rx_data(rxr, cons, data);
-- 
2.18.1


Download attachment "smime.p7s" of type "application/pkcs7-signature" (4209 bytes)