| Message ID | 20210510093854.31652-2-magnus.karlsson@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | i40e: ice: ixgbe: ixgbevf: igb: igc: add correct exception tracing for XDP | expand |
> -----Original Message----- > From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of > Magnus Karlsson > Sent: Monday, May 10, 2021 3:09 PM > To: Karlsson, Magnus <magnus.karlsson@intel.com>; intel-wired- > lan@lists.osuosl.org; Nguyen, Anthony L <anthony.l.nguyen@intel.com>; > Fijalkowski, Maciej <maciej.fijalkowski@intel.com> > Cc: netdev@vger.kernel.org; brouer@redhat.com > Subject: [Intel-wired-lan] [PATCH intel-net v2 1/6] i40e: add correct exception > tracing for XDP > > From: Magnus Karlsson <magnus.karlsson@intel.com> > > Add missing exception tracing to XDP when a number of different errors can > occur. The support was only partial. Several errors where not logged which > would confuse the user quite a lot not knowing where and why the packets > disappeared. > > Fixes: 74608d17fe29 ("i40e: add support for XDP_TX action") > Fixes: 0a714186d3c0 ("i40e: add AF_XDP zero-copy Rx support") > Reported-by: Jesper Dangaard Brouer <brouer@redhat.com> > Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> > --- > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 7 ++++++- > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 8 ++++++-- > 2 files changed, 12 insertions(+), 3 deletions(-) > Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com> A Contingent Worker at Intel
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index de70c16ef619..b883ab809df3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2313,15 +2313,20 @@ static int i40e_run_xdp(struct i40e_ring *rx_ring, struct xdp_buff *xdp) case XDP_TX: xdp_ring = rx_ring->vsi->xdp_rings[rx_ring->queue_index]; result = i40e_xmit_xdp_tx_ring(xdp, xdp_ring); + if (result == I40E_XDP_CONSUMED) + goto out_failure; break; case XDP_REDIRECT: err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog); - result = !err ? I40E_XDP_REDIR : I40E_XDP_CONSUMED; + if (err) + goto out_failure; + result = I40E_XDP_REDIR; break; default: bpf_warn_invalid_xdp_action(act); fallthrough; case XDP_ABORTED: +out_failure: trace_xdp_exception(rx_ring->netdev, xdp_prog, act); fallthrough; /* handle aborts by dropping packet */ case XDP_DROP: diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c index 46d884417c63..68f177a86403 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c @@ -162,9 +162,10 @@ static int i40e_run_xdp_zc(struct i40e_ring *rx_ring, struct xdp_buff *xdp) if (likely(act == XDP_REDIRECT)) { err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog); - result = !err ? I40E_XDP_REDIR : I40E_XDP_CONSUMED; + if (err) + goto out_failure; rcu_read_unlock(); - return result; + return I40E_XDP_REDIR; } switch (act) { @@ -173,11 +174,14 @@ static int i40e_run_xdp_zc(struct i40e_ring *rx_ring, struct xdp_buff *xdp) case XDP_TX: xdp_ring = rx_ring->vsi->xdp_rings[rx_ring->queue_index]; result = i40e_xmit_xdp_tx_ring(xdp, xdp_ring); + if (result == I40E_XDP_CONSUMED) + goto out_failure; break; default: bpf_warn_invalid_xdp_action(act); fallthrough; case XDP_ABORTED: +out_failure: trace_xdp_exception(rx_ring->netdev, xdp_prog, act); fallthrough; /* handle aborts by dropping packet */ case XDP_DROP: