| Message ID | 20190220152014.13376-1-jan.sokolowski@intel.com |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | David Miller |
| Headers | show |
| Series | [net] ixgbe: don't do any AF_XDP zero-copy transmit if netif is not OK | expand |
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c index 98870707b51a..51c29358c2a9 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c @@ -617,7 +617,8 @@ static bool ixgbe_xmit_zc(struct ixgbe_ring *xdp_ring, unsigned int budget) dma_addr_t dma; while (budget-- > 0) { - if (unlikely(!ixgbe_desc_unused(xdp_ring))) { + if (unlikely(!ixgbe_desc_unused(xdp_ring)) || + !netif_carrier_ok(xdp_ring->netdev)) { work_done = false; break; }
An issue has been found while testing zero-copy XDP that causes a reset to be triggered. As it takes some time to turn the carrier on after setting zc, and we already start trying to transmit some packets, watchdog considers this as an erroneous state and triggers a reset. Don't do any work if netif carrier is not OK. Fixes: 8221c5eba8c13 (ixgbe: add AF_XDP zero-copy Tx support) Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com> --- drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)