[v2] net/af_xdp: disable secondary process support
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Commit Message
Since the AF_XDP PMD does not work for secondary processes as reported
in Bugzilla 805, check for the process type at the beginning of probe
and return ENOTSUP if the process type is secondary.
It is planned that secondary processes will be supported by the PMD in
full in a future release by using rte_mp_msg to pass the state to the
secondary process that it requires in order to work.
Bugzilla ID: 805
Fixes: f1debd77efaf ("net/af_xdp: introduce AF_XDP PMD")
Cc: stable@dpdk.org
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
Reported-by: Stephen Hemminger <stephen@networkplumber.org>
---
doc/guides/rel_notes/release_21_11.rst | 4 ++++
drivers/net/af_xdp/rte_eth_af_xdp.c | 15 +++++----------
2 files changed, 9 insertions(+), 10 deletions(-)
Comments
On 10/8/2021 8:50 AM, Ciara Loftus wrote:
> Since the AF_XDP PMD does not work for secondary processes as reported
> in Bugzilla 805, check for the process type at the beginning of probe
> and return ENOTSUP if the process type is secondary.
>
> It is planned that secondary processes will be supported by the PMD in
> full in a future release by using rte_mp_msg to pass the state to the
> secondary process that it requires in order to work.
>
> Bugzilla ID: 805
> Fixes: f1debd77efaf ("net/af_xdp: introduce AF_XDP PMD")
> Cc: stable@dpdk.org
>
> Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
> Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Applied to dpdk-next-net/main, thanks.
@@ -67,6 +67,10 @@ New Features
Added macros ETH_RSS_IPV4_CHKSUM and ETH_RSS_L4_CHKSUM, now IPv4 and
TCP/UDP/SCTP header checksum field can be used as input set for RSS.
+* **Updated AF_XDP PMD.**
+
+ * Disabled secondary process support.
+
* **Updated Broadcom bnxt PMD.**
* Added flow offload support for Thor.
@@ -1790,16 +1790,11 @@ rte_pmd_af_xdp_probe(struct rte_vdev_device *dev)
rte_vdev_device_name(dev));
name = rte_vdev_device_name(dev);
- if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
- strlen(rte_vdev_device_args(dev)) == 0) {
- eth_dev = rte_eth_dev_attach_secondary(name);
- if (eth_dev == NULL) {
- AF_XDP_LOG(ERR, "Failed to probe %s\n", name);
- return -EINVAL;
- }
- eth_dev->dev_ops = &ops;
- rte_eth_dev_probing_finish(eth_dev);
- return 0;
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ AF_XDP_LOG(ERR, "Failed to probe %s. "
+ "AF_XDP PMD does not support secondary processes.\n",
+ name);
+ return -ENOTSUP;
}
kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);