netdev - [PATCH bpf-next 07/13] ice: use ice_max_xdp_frame_size() in ice_xdp_setup

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Message-Id: <20230131204506.219292-8-maciej.fijalkowski@intel.com>
Date:   Tue, 31 Jan 2023 21:45:00 +0100
From:   Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To:     intel-wired-lan@...ts.osuosl.org
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        anthony.l.nguyen@...el.com, magnus.karlsson@...el.com,
        tirthendu.sarkar@...el.com, alexandr.lobakin@...el.com,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>
Subject: [PATCH bpf-next 07/13] ice: use ice_max_xdp_frame_size() in ice_xdp_setup_prog()

This should have been used in there from day 1, let us address that
before introducing XDP multi-buffer support for Rx side.

Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 28 +++++++++++------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 88b4a017990d..a9d644276dfd 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2862,6 +2862,18 @@ int ice_vsi_determine_xdp_res(struct ice_vsi *vsi)
 	return 0;
 }
 
+/**
+ * ice_max_xdp_frame_size - returns the maximum allowed frame size for XDP
+ * @vsi: Pointer to VSI structure
+ */
+static int ice_max_xdp_frame_size(struct ice_vsi *vsi)
+{
+	if (test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags))
+		return ICE_RXBUF_1664;
+	else
+		return ICE_RXBUF_3072;
+}
+
 /**
  * ice_xdp_setup_prog - Add or remove XDP eBPF program
  * @vsi: VSI to setup XDP for
@@ -2872,11 +2884,11 @@ static int
 ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
 		   struct netlink_ext_ack *extack)
 {
-	int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
+	unsigned int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
 	bool if_running = netif_running(vsi->netdev);
 	int ret = 0, xdp_ring_err = 0;
 
-	if (frame_size > vsi->rx_buf_len) {
+	if (frame_size > ice_max_xdp_frame_size(vsi)) {
 		NL_SET_ERR_MSG_MOD(extack, "MTU too large for loading XDP");
 		return -EOPNOTSUPP;
 	}
@@ -7321,18 +7333,6 @@ static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
 	dev_err(dev, "Rebuild failed, unload and reload driver\n");
 }
 
-/**
- * ice_max_xdp_frame_size - returns the maximum allowed frame size for XDP
- * @vsi: Pointer to VSI structure
- */
-static int ice_max_xdp_frame_size(struct ice_vsi *vsi)
-{
-	if (test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags))
-		return ICE_RXBUF_1664;
-	else
-		return ICE_RXBUF_3072;
-}
-
 /**
  * ice_change_mtu - NDO callback to change the MTU
  * @netdev: network interface device structure
-- 
2.34.1