diff options
Diffstat (limited to 'drivers/net/ethernet/cisco')
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic_main.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index f32f828b7f3d..151b375337a9 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -39,6 +39,9 @@ #include <linux/prefetch.h> #include <net/ip6_checksum.h> #include <linux/ktime.h> +#ifdef CONFIG_RFS_ACCEL +#include <linux/cpu_rmap.h> +#endif #include "cq_enet_desc.h" #include "vnic_dev.h" @@ -1192,6 +1195,44 @@ static void enic_calc_int_moderation(struct enic *enic, struct vnic_rq *rq) pkt_size_counter->small_pkt_bytes_cnt = 0; } +#ifdef CONFIG_RFS_ACCEL +static void enic_free_rx_cpu_rmap(struct enic *enic) +{ + free_irq_cpu_rmap(enic->netdev->rx_cpu_rmap); + enic->netdev->rx_cpu_rmap = NULL; +} + +static void enic_set_rx_cpu_rmap(struct enic *enic) +{ + int i, res; + + if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX) { + enic->netdev->rx_cpu_rmap = alloc_irq_cpu_rmap(enic->rq_count); + if (unlikely(!enic->netdev->rx_cpu_rmap)) + return; + for (i = 0; i < enic->rq_count; i++) { + res = irq_cpu_rmap_add(enic->netdev->rx_cpu_rmap, + enic->msix_entry[i].vector); + if (unlikely(res)) { + enic_free_rx_cpu_rmap(enic); + return; + } + } + } +} + +#else + +static void enic_free_rx_cpu_rmap(struct enic *enic) +{ +} + +static void enic_set_rx_cpu_rmap(struct enic *enic) +{ +} + +#endif /* CONFIG_RFS_ACCEL */ + static int enic_poll_msix(struct napi_struct *napi, int budget) { struct net_device *netdev = napi->dev; @@ -1267,6 +1308,7 @@ static void enic_free_intr(struct enic *enic) struct net_device *netdev = enic->netdev; unsigned int i; + enic_free_rx_cpu_rmap(enic); switch (vnic_dev_get_intr_mode(enic->vdev)) { case VNIC_DEV_INTR_MODE_INTX: free_irq(enic->pdev->irq, netdev); @@ -1291,6 +1333,7 @@ static int enic_request_intr(struct enic *enic) unsigned int i, intr; int err = 0; + enic_set_rx_cpu_rmap(enic); switch (vnic_dev_get_intr_mode(enic->vdev)) { case VNIC_DEV_INTR_MODE_INTX: |