[PATCH v20 bpf-next 10/23] net: mvneta: enable jumbo frames if the loaded XDP program support mb
flat view
STALE1752d
SUPERSEDED: 5 (5M)
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2021-12-10 19:15:55
Also in:
bpf
Subsystem:
marvell mvneta ethernet driver, networking drivers, the rest · Maintainers:
Marcin Wojtas, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v20 of 19 in this series; 1 review trailer.
Revisions (19)
- v3 [diff vs current]
- v4 [diff vs current]
- v5 [diff vs current]
- v7 [diff vs current]
- v8 [diff vs current]
- v9 [diff vs current]
- v11 [diff vs current]
- v12 [diff vs current]
- v13 [diff vs current]
- v14 [diff vs current]
- v15 [diff vs current]
- v16 [diff vs current]
- v17 [diff vs current]
- v18 [diff vs current]
- v19 [diff vs current]
- v20 current
- v21 [diff vs current]
- v22 [diff vs current]
- v23 [diff vs current]
Enable the capability to receive jumbo frames even if the interface is running in XDP mode if the loaded program declare to properly support xdp multi-buff. At same time reject a xdp program not supporting xdp multi-buffer if the driver is running in xdp multi-buffer mode. Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/ethernet/marvell/mvneta.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 332699960b53..98db3d03116a 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c@@ -3750,6 +3750,7 @@ static void mvneta_percpu_disable(void *arg) static int mvneta_change_mtu(struct net_device *dev, int mtu) { struct mvneta_port *pp = netdev_priv(dev); + struct bpf_prog *prog = pp->xdp_prog; int ret; if (!IS_ALIGNED(MVNETA_RX_PKT_SIZE(mtu), 8)) {
@@ -3758,8 +3759,11 @@ 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); + if (prog && !prog->aux->xdp_mb && mtu > MVNETA_MAX_RX_BUF_SIZE) { + netdev_info(dev, + "Illegal MTU %d for XDP prog without multi-buf\n", + mtu); + return -EINVAL; }
@@ -4428,8 +4432,9 @@ 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"); + if (prog && !prog->aux->xdp_mb && dev->mtu > MVNETA_MAX_RX_BUF_SIZE) { + NL_SET_ERR_MSG_MOD(extack, + "prog does not support XDP multi-buff"); return -EOPNOTSUPP; }
--
2.33.1