netdev - [PATCH v12 bpf-next 09/18] net: mvneta: enable jumbo frames for XDP

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Message-Id: <855da36f6c4f5fca872f1cfd13842374945db88f.1629473233.git.lorenzo@kernel.org>
Date:   Fri, 20 Aug 2021 17:40:22 +0200
From:   Lorenzo Bianconi <lorenzo@...nel.org>
To:     bpf@...r.kernel.org, netdev@...r.kernel.org
Cc:     lorenzo.bianconi@...hat.com, davem@...emloft.net, kuba@...nel.org,
        ast@...nel.org, daniel@...earbox.net, shayagr@...zon.com,
        john.fastabend@...il.com, dsahern@...nel.org, brouer@...hat.com,
        echaudro@...hat.com, jasowang@...hat.com,
        alexander.duyck@...il.com, saeed@...nel.org,
        maciej.fijalkowski@...el.com, magnus.karlsson@...el.com,
        tirthendu.sarkar@...el.com, toke@...hat.com
Subject: [PATCH v12 bpf-next 09/18] net: mvneta: enable jumbo frames for XDP

Enable the capability to receive jumbo frames even if the interface is
running in XDP mode

Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 drivers/net/ethernet/marvell/mvneta.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index dde1c28b0ea8..3dbcb067346c 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -3767,11 +3767,6 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
 		mtu = ALIGN(MVNETA_RX_PKT_SIZE(mtu), 8);
 	}
 
-	if (pp->xdp_prog && mtu > MVNETA_MAX_RX_BUF_SIZE) {
-		netdev_info(dev, "Illegal MTU value %d for XDP mode\n", mtu);
-		return -EINVAL;
-	}
-
 	dev->mtu = mtu;
 
 	if (!netif_running(dev)) {
@@ -4481,11 +4476,6 @@ static int mvneta_xdp_setup(struct net_device *dev, struct bpf_prog *prog,
 	struct mvneta_port *pp = netdev_priv(dev);
 	struct bpf_prog *old_prog;
 
-	if (prog && dev->mtu > MVNETA_MAX_RX_BUF_SIZE) {
-		NL_SET_ERR_MSG_MOD(extack, "MTU too large for XDP");
-		return -EOPNOTSUPP;
-	}
-
 	if (pp->bm_priv) {
 		NL_SET_ERR_MSG_MOD(extack,
 				   "Hardware Buffer Management not supported on XDP");
-- 
2.31.1