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netdev-linux: Detect numa node id.

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The patch detects the numa node id from the name of the netdev,
by reading the '/sys/class/net/<devname>/device/numa_node'.
If not available, ex: virtual device, or any error happens,
return numa id 0.  Currently only the afxdp netdev type uses it,
other linux netdev types are disabled due to no use case.

Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
William Tu
2020-01-03 17:13:25 -08:00
committed by Ilya Maximets
parent 29cf9c1b3b
commit 105cf8df82
5 changed files with 72 additions and 16 deletions
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lib/netdev-linux-private.h
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@@ -101,6 +101,8 @@ struct netdev_linux {
/* LAG information. */
bool is_lag_master; /* True if the netdev is a LAG master. */
int numa_id; /* NUMA node id. */
#ifdef HAVE_AF_XDP
/* AF_XDP information. */
struct xsk_socket_info **xsks;