[PATCH 5/5] ixgbe: add support for threadable rx irq
From: Paolo Abeni <pabeni@redhat.com>
Date: 2016-06-15 13:43:18
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Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Plug-in the threadable irq infrastructure to allow run-time configuration of rx irqs, when msix irqs are used. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Hannes Frederic Sowa <redacted> --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 088c47c..d9a591c 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c@@ -2890,6 +2890,14 @@ int ixgbe_poll(struct napi_struct *napi, int budget) return 0; } +static void ixgbe_irq_mode_notifier(int irq, void *data, + struct task_struct *irq_thread) +{ + struct ixgbe_q_vector *q_vector = (struct ixgbe_q_vector *)data; + + q_vector->napi.thread = irq_thread; +} + /** * ixgbe_request_msix_irqs - Initialize MSI-X interrupts * @adapter: board private structure
@@ -2921,8 +2929,12 @@ static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) /* skip this unused q_vector */ continue; } - err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0, + err = request_irq(entry->vector, &ixgbe_msix_clean_rings, + IRQF_TH_NO_AFFINITY | IRQF_TH_SCHED_NORMAL, q_vector->name, q_vector); + if (!err) + err = irq_set_mode_notifier(entry->vector, q_vector, + ixgbe_irq_mode_notifier); if (err) { e_err(probe, "request_irq failed for MSIX interrupt " "Error: %d\n", err);
--
1.8.3.1