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ice: add correct exception tracing for XDP

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[ Upstream commit 89d65df024c59988291f643b4e45d1528c51aef9 ]

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: efc2214b6047 ("ice: Add support for XDP")
Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Magnus Karlsson 2021-05-10 11:38:50 +02:00 committed by Greg Kroah-Hartman
parent 9e1eb42884
commit ad505705bb
2 changed files with 15 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/ethernet/intel/ice/ice_txrx.c
View File

@ -538,7 +538,7 @@ ice_run_xdp(struct ice_ring *rx_ring, struct xdp_buff *xdp,
struct bpf_prog *xdp_prog)
{
struct ice_ring *xdp_ring;
int err;
int err, result;
u32 act;
act = bpf_prog_run_xdp(xdp_prog, xdp);
@ -547,14 +547,20 @@ ice_run_xdp(struct ice_ring *rx_ring, struct xdp_buff *xdp,
return ICE_XDP_PASS;
case XDP_TX:
xdp_ring = rx_ring->vsi->xdp_rings[smp_processor_id()];
return ice_xmit_xdp_buff(xdp, xdp_ring);
result = ice_xmit_xdp_buff(xdp, xdp_ring);
if (result == ICE_XDP_CONSUMED)
goto out_failure;
return result;
case XDP_REDIRECT:
err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog);
return !err ? ICE_XDP_REDIR : ICE_XDP_CONSUMED;
if (err)
goto out_failure;
return ICE_XDP_REDIR;
default:
bpf_warn_invalid_xdp_action(act);
fallthrough;
case XDP_ABORTED:
out_failure:
trace_xdp_exception(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_DROP:

8
drivers/net/ethernet/intel/ice/ice_xsk.c
View File

@ -527,9 +527,10 @@ ice_run_xdp_zc(struct ice_ring *rx_ring, struct xdp_buff *xdp)
if (likely(act == XDP_REDIRECT)) {
err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog);
result = !err ? ICE_XDP_REDIR : ICE_XDP_CONSUMED;
if (err)
goto out_failure;
rcu_read_unlock();
return result;
return ICE_XDP_REDIR;
}
switch (act) {
@ -538,11 +539,14 @@ ice_run_xdp_zc(struct ice_ring *rx_ring, struct xdp_buff *xdp)
case XDP_TX:
xdp_ring = rx_ring->vsi->xdp_rings[rx_ring->q_index];
result = ice_xmit_xdp_buff(xdp, xdp_ring);
if (result == ICE_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;
case XDP_DROP: