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enic: Save resource counts we read from HW

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Save the resources counts for wq,rq,cq, and interrupts in *_avail variables
so that we don't lose the information when adjusting the counts we are
actually using.

Report the wq_avail and rq_avail as the channel maximums in 'ethtool -l'
output.

Co-developed-by: John Daley <johndale@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
Co-developed-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20241113-remove_vic_resource_limits-v4-3-a34cf8570c67@cisco.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nelson Escobar 2024-11-13 23:56:35 +00:00 committed by Jakub Kicinski
parent 231646cb6a
commit 5aee332472
3 changed files with 18 additions and 9 deletions
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4
drivers/net/ethernet/cisco/enic/enic.h
View File

@ -206,23 +206,27 @@ struct enic {
/* work queue cache line section */
____cacheline_aligned struct enic_wq wq[ENIC_WQ_MAX];
unsigned int wq_avail;
unsigned int wq_count;
u16 loop_enable;
u16 loop_tag;
/* receive queue cache line section */
____cacheline_aligned struct enic_rq rq[ENIC_RQ_MAX];
unsigned int rq_avail;
unsigned int rq_count;
struct vxlan_offload vxlan;
struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
/* interrupt resource cache line section */
____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
unsigned int intr_avail;
unsigned int intr_count;
u32 __iomem *legacy_pba; /* memory-mapped */
/* completion queue cache line section */
____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
unsigned int cq_avail;
unsigned int cq_count;
struct enic_rfs_flw_tbl rfs_h;
u32 rx_copybreak;

4
drivers/net/ethernet/cisco/enic/enic_ethtool.c
View File

@ -695,8 +695,8 @@ static void enic_get_channels(struct net_device *netdev,
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_MSIX:
channels->max_rx = ENIC_RQ_MAX;
channels->max_tx = ENIC_WQ_MAX;
channels->max_rx = min(enic->rq_avail, ENIC_RQ_MAX);
channels->max_tx = min(enic->wq_avail, ENIC_WQ_MAX);
channels->rx_count = enic->rq_count;
channels->tx_count = enic->wq_count;
break;

19
drivers/net/ethernet/cisco/enic/enic_res.c
View File

@ -187,16 +187,21 @@ void enic_free_vnic_resources(struct enic *enic)
void enic_get_res_counts(struct enic *enic)
{
enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
enic->intr_count = vnic_dev_get_res_count(enic->vdev,
RES_TYPE_INTR_CTRL);
enic->wq_avail = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
enic->rq_avail = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
enic->cq_avail = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
enic->intr_avail = vnic_dev_get_res_count(enic->vdev,
RES_TYPE_INTR_CTRL);
enic->wq_count = enic->wq_avail;
enic->rq_count = enic->rq_avail;
enic->cq_count = enic->cq_avail;
enic->intr_count = enic->intr_avail;
dev_info(enic_get_dev(enic),
"vNIC resources avail: wq %d rq %d cq %d intr %d\n",
enic->wq_count, enic->rq_count,
enic->cq_count, enic->intr_count);
enic->wq_avail, enic->rq_avail,
enic->cq_avail, enic->intr_avail);
}
void enic_init_vnic_resources(struct enic *enic)