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| author | Joe Damato <jdamato@fastly.com> | 2025-01-06 14:19:21 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-01-07 18:16:02 -0800 |
| commit | 1a63399c13fe557e791e73468e90b3484faa1e84 (patch) | |
| tree | be8c5eedd9cf93feabf6e86b993e497d4cca39fb /drivers/net/ethernet/intel/igc/igc_main.c | |
| parent | 07af482e646539d3cc12bc85040fe02f39ae3761 (diff) | |
| download | lwn-1a63399c13fe557e791e73468e90b3484faa1e84.tar.gz lwn-1a63399c13fe557e791e73468e90b3484faa1e84.zip | |
igc: Link IRQs to NAPI instances
Link IRQs to NAPI instances via netdev-genl API so that users can query
this information with netlink.
Compare the output of /proc/interrupts (noting that IRQ 128 is the
"other" IRQ which does not appear to have a NAPI instance):
$ cat /proc/interrupts | grep enp86s0 | cut --delimiter=":" -f1
128
129
130
131
132
The output from netlink shows the mapping of NAPI IDs to IRQs (again
noting that 128 is absent as it is the "other" IRQ):
$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/netdev.yaml \
--dump napi-get --json='{"ifindex": 2}'
[{'defer-hard-irqs': 0,
'gro-flush-timeout': 0,
'id': 8196,
'ifindex': 2,
'irq': 132},
{'defer-hard-irqs': 0,
'gro-flush-timeout': 0,
'id': 8195,
'ifindex': 2,
'irq': 131},
{'defer-hard-irqs': 0,
'gro-flush-timeout': 0,
'id': 8194,
'ifindex': 2,
'irq': 130},
{'defer-hard-irqs': 0,
'gro-flush-timeout': 0,
'id': 8193,
'ifindex': 2,
'irq': 129}]
Signed-off-by: Joe Damato <jdamato@fastly.com>
Reviewed-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
Tested-by: Avigail Dahan <avigailx.dahan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20250106221929.956999-14-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 6832a8229a83..d9542015e871 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -5570,6 +5570,9 @@ static int igc_request_msix(struct igc_adapter *adapter) q_vector); if (err) goto err_free; + + netif_napi_set_irq(&q_vector->napi, + adapter->msix_entries[vector].vector); } igc_configure_msix(adapter); |