From: Jesper Dangaard Brouer Date: Thu, 24 Aug 2017 10:33:13 +0000 (+0200) Subject: ixgbe: use return codes from ndo_xdp_xmit that are distinguishable X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2886447dc5add28226451c163cd9ac1d1b3bf59a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ixgbe: use return codes from ndo_xdp_xmit that are distinguishable For XDP_REDIRECT the use of return code -EINVAL is confusing, as it is used in three different cases. (1) When the index or ifindex lookup fails, and in the ixgbe driver (2) when link is down and (3) when XDP have not been enabled. The return code can be picked up by the tracepoint xdp:xdp_redirect for diagnosing why XDP_REDIRECT isn't working. Thus, there is a need different return codes to tell the issues apart. I'm considering using a specific err-code scheme for XDP_REDIRECT instead of using these errno codes. Signed-off-by: Jesper Dangaard Brouer Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 8d3224ad6434..d962368d08d0 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -9849,14 +9849,14 @@ static int ixgbe_xdp_xmit(struct net_device *dev, struct xdp_buff *xdp) int err; if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) - return -EINVAL; + return -ENETDOWN; /* During program transitions its possible adapter->xdp_prog is assigned * but ring has not been configured yet. In this case simply abort xmit. */ ring = adapter->xdp_prog ? adapter->xdp_ring[smp_processor_id()] : NULL; if (unlikely(!ring)) - return -EINVAL; + return -ENXIO; err = ixgbe_xmit_xdp_ring(adapter, xdp); if (err != IXGBE_XDP_TX)