@@ -3751,6 +3751,7 @@ 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)) {
@@ -3759,8 +3760,11 @@ 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;
}
@@ -4473,8 +4477,9 @@ 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;
}
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. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/ethernet/marvell/mvneta.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)