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dpdk/eal: fix secondary process resetting NIC via eal_bus_cleanup() #1050

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Merged
jfb8856606 merged 1 commit into from
Mar 18, 2026
Merged

dpdk/eal: fix secondary process resetting NIC via eal_bus_cleanup() #1050

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13 changes: 12 additions & 1 deletion dpdk/lib/eal/linux/eal.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1370,7 +1370,18 @@ rte_eal_cleanup(void)
vfio_mp_sync_cleanup();
#endif
rte_mp_channel_cleanup();
eal_bus_cleanup();
/* Secondary processes should not call eal_bus_cleanup() because it
* invokes drv->remove() on all PCI devices, which for virtio PMD ends
* up calling virtio_reset() and writing VIRTIO_CONFIG_STATUS_RESET to
* the hardware. This resets the NIC owned by the primary process,
* causing it to stop accepting new connections.
*
* Upstream fix: commit 4bc53f8f0d64 ("eal: fix MP socket cleanup"),
* DPDK >= 25.07. Backport for F-Stack bundled DPDK 23.11.5.
* See also: https://github.com/F-Stack/f-stack/issues/860
*/
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
eal_bus_cleanup();
rte_eal_alarm_cleanup();
rte_trace_save();
eal_trace_fini();
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