From: Jakub Kicinski Date: Sun, 23 Apr 2017 03:17:55 +0000 (-0700) Subject: nfp: fix free list buffer size reporting X-Git-Tag: v4.14-rc1~1025^2~104^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ee200a7377fb6ce5ea6d631af0905883f0dca6d2;p=platform%2Fkernel%2Flinux-rpi.git nfp: fix free list buffer size reporting XDP headroom should not be included in free list buffer size. Fixes: 6fe0c3b43804 ("nfp: add support for xdp_adjust_head()") 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 3285053..8a9b743 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -2165,7 +2165,7 @@ nfp_net_tx_ring_hw_cfg_write(struct nfp_net *nn, */ static int nfp_net_set_config_and_enable(struct nfp_net *nn) { - u32 new_ctrl, update = 0; + u32 bufsz, new_ctrl, update = 0; unsigned int r; int err; @@ -2199,8 +2199,9 @@ static int nfp_net_set_config_and_enable(struct nfp_net *nn) nfp_net_write_mac_addr(nn); nn_writel(nn, NFP_NET_CFG_MTU, nn->dp.netdev->mtu); - nn_writel(nn, NFP_NET_CFG_FLBUFSZ, - nn->dp.fl_bufsz - NFP_NET_RX_BUF_NON_DATA); + + bufsz = nn->dp.fl_bufsz - nn->dp.rx_dma_off - NFP_NET_RX_BUF_NON_DATA; + nn_writel(nn, NFP_NET_CFG_FLBUFSZ, bufsz); /* Enable device */ new_ctrl |= NFP_NET_CFG_CTRL_ENABLE;