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bnxt_en: get rid of num_stat_ctxs variable 

For bnxt_en driver, stat_ctxs created will always be same as
cp_nr_rings. Remove extra variable that duplicates the value.
Also introduce bnxt_get_avail_stat_ctxs_for_en() helper to get
available stat_ctxs and bnxt_get_ulp_stat_ctxs() helper to return
number of stat_ctxs used by RDMA.

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Vasundhara Volam 2018-12-16 18:46:21 -05:00 committed by David S. Miller
parent e916b0815a
commit c027c6b4e9
7 changed files with 25 additions and 16 deletions
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14
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -7081,6 +7081,15 @@ unsigned int bnxt_get_avail_cp_rings_for_en(struct bnxt *bp)
return cp - bp->cp_nr_rings;
}
unsigned int bnxt_get_avail_stat_ctxs_for_en(struct bnxt *bp)
{
unsigned int stat;
stat = bnxt_get_max_func_stat_ctxs(bp) - bnxt_get_ulp_stat_ctxs(bp);
stat -= bp->cp_nr_rings;
return stat;
}
int bnxt_get_avail_msix(struct bnxt *bp, int num)
{
int max_cp = bnxt_get_max_func_cp_rings(bp);
@ -7242,7 +7251,6 @@ int bnxt_reserve_rings(struct bnxt *bp)
bp->tx_nr_rings_per_tc = bp->tx_nr_rings;
return -ENOMEM;
}
bp->num_stat_ctxs = bp->cp_nr_rings;
return 0;
}
@ -9309,7 +9317,6 @@ int bnxt_setup_mq_tc(struct net_device *dev, u8 tc)
bp->tx_nr_rings += bp->tx_nr_rings_xdp;
bp->cp_nr_rings = sh ? max_t(int, bp->tx_nr_rings, bp->rx_nr_rings) :
bp->tx_nr_rings + bp->rx_nr_rings;
bp->num_stat_ctxs = bp->cp_nr_rings;
if (netif_running(bp->dev))
return bnxt_open_nic(bp, true, false);
@ -9849,7 +9856,7 @@ static void _bnxt_get_max_rings(struct bnxt *bp, int *max_rx, int *max_tx,
*max_cp = bnxt_get_max_func_cp_rings_for_en(bp);
max_irq = min_t(int, bnxt_get_max_func_irqs(bp) -
bnxt_get_ulp_msix_num(bp),
bnxt_get_max_func_stat_ctxs(bp));
hw_resc->max_stat_ctxs - bnxt_get_ulp_stat_ctxs(bp));
if (!(bp->flags & BNXT_FLAG_CHIP_P5))
*max_cp = min_t(int, *max_cp, max_irq);
max_ring_grps = hw_resc->max_hw_ring_grps;
@ -9980,7 +9987,6 @@ static int bnxt_set_dflt_rings(struct bnxt *bp, bool sh)
netdev_warn(bp->dev, "2nd rings reservation failed.\n");
bp->tx_nr_rings_per_tc = bp->tx_nr_rings;
}
bp->num_stat_ctxs = bp->cp_nr_rings;
if (BNXT_CHIP_TYPE_NITRO_A0(bp)) {
bp->rx_nr_rings++;
bp->cp_nr_rings++;

3
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1417,8 +1417,6 @@ struct bnxt {
int cp_nr_pages;
int cp_nr_rings;
int num_stat_ctxs;
/* grp_info indexed by completion ring index */
struct bnxt_ring_grp_info *grp_info;
struct bnxt_vnic_info *vnic_info;
@ -1690,6 +1688,7 @@ int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings);
int bnxt_hwrm_set_coal(struct bnxt *);
unsigned int bnxt_get_max_func_stat_ctxs(struct bnxt *bp);
void bnxt_set_max_func_stat_ctxs(struct bnxt *bp, unsigned int max);
unsigned int bnxt_get_avail_stat_ctxs_for_en(struct bnxt *bp);
unsigned int bnxt_get_max_func_cp_rings(struct bnxt *bp);
unsigned int bnxt_get_avail_cp_rings_for_en(struct bnxt *bp);
int bnxt_get_avail_msix(struct bnxt *bp, int num);

2
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -663,8 +663,6 @@ static int bnxt_set_channels(struct net_device *dev,
bp->cp_nr_rings = sh ? max_t(int, bp->tx_nr_rings, bp->rx_nr_rings) :
bp->tx_nr_rings + bp->rx_nr_rings;
bp->num_stat_ctxs = bp->cp_nr_rings;
/* After changing number of rx channels, update NTUPLE feature. */
netdev_update_features(dev);
if (netif_running(dev)) {

10
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
View File

@ -452,7 +452,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
vf_stat_ctx = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
if (bp->flags & BNXT_FLAG_AGG_RINGS)
vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
else
@ -539,18 +539,16 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
u32 rc = 0, mtu, i;
u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
u16 vf_ring_grps, max_stat_ctxs;
struct hwrm_func_cfg_input req = {0};
struct bnxt_pf_info *pf = &bp->pf;
int total_vf_tx_rings = 0;
u16 vf_ring_grps;
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
max_stat_ctxs = hw_resc->max_stat_ctxs;
/* Remaining rings are distributed equally amongs VF's for now */
vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
vf_stat_ctx = (max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
if (bp->flags & BNXT_FLAG_AGG_RINGS)
vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
num_vfs;
@ -644,7 +642,7 @@ static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
vfs_supported = *num_vfs;
avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
avail_stat = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
avail_cp = min_t(int, avail_cp, avail_stat);
while (vfs_supported) {

10
drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
View File

@ -48,7 +48,7 @@ static int bnxt_register_dev(struct bnxt_en_dev *edev, int ulp_id,
max_stat_ctxs = bnxt_get_max_func_stat_ctxs(bp);
if (max_stat_ctxs <= BNXT_MIN_ROCE_STAT_CTXS ||
bp->num_stat_ctxs == max_stat_ctxs)
bp->cp_nr_rings == max_stat_ctxs)
return -ENOMEM;
bnxt_set_max_func_stat_ctxs(bp, max_stat_ctxs -
BNXT_MIN_ROCE_STAT_CTXS);
@ -218,6 +218,14 @@ int bnxt_get_ulp_msix_base(struct bnxt *bp)
return 0;
}
int bnxt_get_ulp_stat_ctxs(struct bnxt *bp)
{
if (bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP))
return BNXT_MIN_ROCE_STAT_CTXS;
return 0;
}
static int bnxt_send_msg(struct bnxt_en_dev *edev, int ulp_id,
struct bnxt_fw_msg *fw_msg)
{

1
drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
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@ -90,6 +90,7 @@ static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id)
int bnxt_get_ulp_msix_num(struct bnxt *bp);
int bnxt_get_ulp_msix_base(struct bnxt *bp);
int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
void bnxt_ulp_stop(struct bnxt *bp);
void bnxt_ulp_start(struct bnxt *bp);
void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);

1
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
View File

@ -199,7 +199,6 @@ static int bnxt_xdp_set(struct bnxt *bp, struct bpf_prog *prog)
bp->tx_nr_rings_xdp = tx_xdp;
bp->tx_nr_rings = bp->tx_nr_rings_per_tc * tc + tx_xdp;
bp->cp_nr_rings = max_t(int, bp->tx_nr_rings, bp->rx_nr_rings);
bp->num_stat_ctxs = bp->cp_nr_rings;
bnxt_set_tpa_flags(bp);
bnxt_set_ring_params(bp);