From: Jakub Kicinski Date: Thu, 7 Apr 2016 18:39:34 +0000 (+0100) Subject: nfp: correct RX buffer length calculation X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ff1b68ab2daf292c0f0897f9c155a6ddc8484693;p=linux-beck.git nfp: correct RX buffer length calculation When calculating the RX buffer length we need to account for up to 2 VLAN tags. Rounding up to 1k is an relic of a distant past and can be removed. While at it also remove trivial print statement. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 43c618bafdb6..0dae81454e77 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -1911,9 +1911,6 @@ static void nfp_net_set_rx_mode(struct net_device *netdev) static int nfp_net_change_mtu(struct net_device *netdev, int new_mtu) { struct nfp_net *nn = netdev_priv(netdev); - u32 tmp; - - nn_dbg(nn, "New MTU = %d\n", new_mtu); if (new_mtu < 68 || new_mtu > nn->max_mtu) { nn_err(nn, "New MTU (%d) is not valid\n", new_mtu); @@ -1921,10 +1918,7 @@ static int nfp_net_change_mtu(struct net_device *netdev, int new_mtu) } netdev->mtu = new_mtu; - - /* Freelist buffer size rounded up to the nearest 1K */ - tmp = new_mtu + ETH_HLEN + VLAN_HLEN + NFP_NET_MAX_PREPEND; - nn->fl_bufsz = roundup(tmp, 1024); + nn->fl_bufsz = NFP_NET_MAX_PREPEND + ETH_HLEN + VLAN_HLEN * 2 + new_mtu; /* restart if running */ if (netif_running(netdev)) {