| Message ID | 158765386575.1613879.14529998894393984755.stgit@firesoul |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next,1/2] net: sched: report ndo_setup_tc failures via extack | expand |
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 55bd1429678f..11b683c45c28 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -735,8 +735,11 @@ static int tcf_block_offload_cmd(struct tcf_block *block, INIT_LIST_HEAD(&bo.cb_list); err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_BLOCK, &bo); - if (err < 0) + if (err < 0) { + if (err != -EOPNOTSUPP) + NL_SET_ERR_MSG(extack, "Driver ndo_setup_tc failed"); return err; + } return tcf_block_setup(block, &bo); }
Help end-users of the 'tc' command to see if the drivers ndo_setup_tc function call fails. Troubleshooting when this happens is non-trivial (see full process here[1]), and results in net_device getting assigned the 'qdisc noop', which will drop all TX packets on the interface. [1]: https://github.com/xdp-project/xdp-project/blob/master/areas/arm64/board_nxp_ls1088/nxp-board04-troubleshoot-qdisc.org Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> --- net/sched/cls_api.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)