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Message-ID: <169811124126.59034.7955140077923696489.stgit@anambiarhost.jf.intel.com> Date: Mon, 23 Oct 2023 18:34:01 -0700 From: Amritha Nambiar <amritha.nambiar@...el.com> To: netdev@...r.kernel.org, kuba@...nel.org, pabeni@...hat.com Cc: sridhar.samudrala@...el.com, amritha.nambiar@...el.com Subject: [net-next PATCH v6 08/10] net: Add NAPI IRQ support Add support to associate the interrupt vector number for a NAPI instance. Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com> Reviewed-by: Sridhar Samudrala <sridhar.samudrala@...el.com> --- drivers/net/ethernet/intel/ice/ice_lib.c | 2 ++ include/linux/netdevice.h | 6 ++++++ net/core/dev.c | 1 + net/core/netdev-genl.c | 4 ++++ 4 files changed, 13 insertions(+) diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c index e2c24853376f..9662fbfef366 100644 --- a/drivers/net/ethernet/intel/ice/ice_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_lib.c @@ -2968,6 +2968,8 @@ void ice_q_vector_set_napi_queues(struct ice_q_vector *q_vector, bool locked) ice_for_each_tx_ring(tx_ring, q_vector->tx) ice_queue_set_napi(tx_ring->q_index, NETDEV_QUEUE_TYPE_TX, &q_vector->napi, locked); + /* Also set the interrupt number for the NAPI */ + netif_napi_set_irq(&q_vector->napi, q_vector->irq.virq); } /** diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f1e0d23a5465..361e814542ec 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -382,6 +382,7 @@ struct napi_struct { /* control-path-only fields follow */ struct list_head dev_list; struct hlist_node napi_hash_node; + int irq; }; enum { @@ -2646,6 +2647,11 @@ void __netif_queue_set_napi(unsigned int queue_index, enum netdev_queue_type type, struct napi_struct *napi); +static inline void netif_napi_set_irq(struct napi_struct *napi, int irq) +{ + napi->irq = irq; +} + /* Default NAPI poll() weight * Device drivers are strongly advised to not use bigger value */ diff --git a/net/core/dev.c b/net/core/dev.c index d02c7a0ce4bc..adf20fa02b93 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -6507,6 +6507,7 @@ void netif_napi_add_weight(struct net_device *dev, struct napi_struct *napi, */ if (dev->threaded && napi_kthread_create(napi)) dev->threaded = 0; + napi->irq = -1; } EXPORT_SYMBOL(netif_napi_add_weight); diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c index d6ef7fc093d0..ad4b1ee0a2d1 100644 --- a/net/core/netdev-genl.c +++ b/net/core/netdev-genl.c @@ -167,7 +167,11 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi, if (nla_put_u32(rsp, NETDEV_A_NAPI_IFINDEX, napi->dev->ifindex)) goto nla_put_failure; + if (napi->irq >= 0 && nla_put_u32(rsp, NETDEV_A_NAPI_IRQ, napi->irq)) + goto nla_put_failure; + genlmsg_end(rsp, hdr); + return 0; nla_put_failure:
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