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bnxt_en: Add a new_rss_ctx parameter to bnxt_rfs_capable()

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Modify bnxt_rfs_capable() to check that there are enough resources
to support aRFS/ntuple filters for a new RSS context requested by
the user.  Existing use cases in the driver will always set the
new parameter to false.

Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20240325222902.220712-9-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavan Chebbi 2024-03-25 15:28:58 -07:00 committed by Jakub Kicinski
parent b09353437b
commit 0895926f72
2 changed files with 7 additions and 4 deletions
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10
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -7360,7 +7360,7 @@ static int bnxt_get_total_vnics(struct bnxt *bp, int rx_rings)
{
if (bp->flags & BNXT_FLAG_RFS) {
if (BNXT_SUPPORTS_NTUPLE_VNIC(bp))
return 2;
return 2 + bp->num_rss_ctx;
if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS))
return rx_rings + 1;
}
@ -12474,7 +12474,7 @@ static bool bnxt_rfs_supported(struct bnxt *bp)
}
/* If runtime conditions support RFS */
static bool bnxt_rfs_capable(struct bnxt *bp)
bool bnxt_rfs_capable(struct bnxt *bp, bool new_rss_ctx)
{
struct bnxt_hw_rings hwr = {0};
int max_vnics, max_rss_ctxs;
@ -12488,6 +12488,8 @@ static bool bnxt_rfs_capable(struct bnxt *bp)
hwr.grp = bp->rx_nr_rings;
hwr.vnic = bnxt_get_total_vnics(bp, bp->rx_nr_rings);
if (new_rss_ctx)
hwr.vnic++;
hwr.rss_ctx = bnxt_get_total_rss_ctxs(bp, &hwr);
max_vnics = bnxt_get_max_func_vnics(bp);
max_rss_ctxs = bnxt_get_max_func_rss_ctxs(bp);
@ -12525,7 +12527,7 @@ static netdev_features_t bnxt_fix_features(struct net_device *dev,
struct bnxt *bp = netdev_priv(dev);
netdev_features_t vlan_features;
if ((features & NETIF_F_NTUPLE) && !bnxt_rfs_capable(bp))
if ((features & NETIF_F_NTUPLE) && !bnxt_rfs_capable(bp, false))
features &= ~NETIF_F_NTUPLE;
if ((bp->flags & BNXT_FLAG_NO_AGG_RINGS) || bp->xdp_prog)
@ -13661,7 +13663,7 @@ static void bnxt_set_dflt_rfs(struct bnxt *bp)
bp->flags &= ~BNXT_FLAG_RFS;
if (bnxt_rfs_supported(bp)) {
dev->hw_features |= NETIF_F_NTUPLE;
if (bnxt_rfs_capable(bp)) {
if (bnxt_rfs_capable(bp, false)) {
bp->flags |= BNXT_FLAG_RFS;
dev->features |= NETIF_F_NTUPLE;
}

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -2756,6 +2756,7 @@ void bnxt_reenable_sriov(struct bnxt *bp);
void bnxt_close_nic(struct bnxt *, bool, bool);
void bnxt_get_ring_err_stats(struct bnxt *bp,
struct bnxt_total_ring_err_stats *stats);
bool bnxt_rfs_capable(struct bnxt *bp, bool new_rss_ctx);
int bnxt_dbg_hwrm_rd_reg(struct bnxt *bp, u32 reg_off, u16 num_words,
u32 *reg_buf);
void bnxt_fw_exception(struct bnxt *bp);