diff options
author | Vikas Gupta <vikas.gupta@broadcom.com> | 2024-04-09 14:54:30 -0700 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2024-04-10 19:55:06 -0700 |
commit | d630624ebd708fb659b18a8d1423e8e26de075ab (patch) | |
tree | cfb6843613e6dd6ae51c9a0bf6992215fb2e433c /drivers | |
parent | 2e4592dc9bee5ca4fd3da4c5451c7f97c76442bf (diff) | |
download | linux-d630624ebd708fb659b18a8d1423e8e26de075ab.tar.gz linux-d630624ebd708fb659b18a8d1423e8e26de075ab.tar.bz2 linux-d630624ebd708fb659b18a8d1423e8e26de075ab.zip |
bnxt_en: Utilize ulp client resources if RoCE is not registered
If the RoCE driver is not registered for a RoCE capable device, add
flexibility to use the RoCE resources (MSIX/NQs) for L2 purposes,
such as additional rings configured by the user or for XDP.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-7-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 41 | ||||
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 14 | ||||
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h | 2 |
3 files changed, 48 insertions, 9 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 88cf8f47e071..a2e21fe64ab9 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -7470,14 +7470,27 @@ static bool bnxt_rings_ok(struct bnxt *bp, struct bnxt_hw_rings *hwr) static int __bnxt_reserve_rings(struct bnxt *bp) { struct bnxt_hw_rings hwr = {0}; + int cp = bp->cp_nr_rings; int rx_rings, rc; + int ulp_msix = 0; bool sh = false; int tx_cp; if (!bnxt_need_reserve_rings(bp)) return 0; - hwr.cp = bnxt_nq_rings_in_use(bp); + if (!bnxt_ulp_registered(bp->edev)) { + ulp_msix = bnxt_get_avail_msix(bp, bp->ulp_num_msix_want); + if (!ulp_msix) + bnxt_set_ulp_stat_ctxs(bp, 0); + + if (ulp_msix > bp->ulp_num_msix_want) + ulp_msix = bp->ulp_num_msix_want; + hwr.cp = cp + ulp_msix; + } else { + hwr.cp = bnxt_nq_rings_in_use(bp); + } + hwr.tx = bp->tx_nr_rings; hwr.rx = bp->rx_nr_rings; if (bp->flags & BNXT_FLAG_SHARED_RINGS) @@ -7550,12 +7563,11 @@ static int __bnxt_reserve_rings(struct bnxt *bp) bnxt_set_dflt_rss_indir_tbl(bp, NULL); if (!bnxt_ulp_registered(bp->edev) && BNXT_NEW_RM(bp)) { - int resv_msix, resv_ctx, ulp_msix, ulp_ctxs; + int resv_msix, resv_ctx, ulp_ctxs; struct bnxt_hw_resc *hw_resc; hw_resc = &bp->hw_resc; resv_msix = hw_resc->resv_irqs - bp->cp_nr_rings; - ulp_msix = bnxt_get_ulp_msix_num(bp); ulp_msix = min_t(int, resv_msix, ulp_msix); bnxt_set_ulp_msix_num(bp, ulp_msix); resv_ctx = hw_resc->resv_stat_ctxs - bp->cp_nr_rings; @@ -10609,13 +10621,23 @@ int bnxt_reserve_rings(struct bnxt *bp, bool irq_re_init) { bool irq_cleared = false; int tcs = bp->num_tc; + int irqs_required; int rc; if (!bnxt_need_reserve_rings(bp)) return 0; - if (irq_re_init && BNXT_NEW_RM(bp) && - bnxt_get_num_msix(bp) != bp->total_irqs) { + if (!bnxt_ulp_registered(bp->edev)) { + int ulp_msix = bnxt_get_avail_msix(bp, bp->ulp_num_msix_want); + + if (ulp_msix > bp->ulp_num_msix_want) + ulp_msix = bp->ulp_num_msix_want; + irqs_required = ulp_msix + bp->cp_nr_rings; + } else { + irqs_required = bnxt_get_num_msix(bp); + } + + if (irq_re_init && BNXT_NEW_RM(bp) && irqs_required != bp->total_irqs) { bnxt_ulp_irq_stop(bp); bnxt_clear_int_mode(bp); irq_cleared = true; @@ -13625,8 +13647,8 @@ int bnxt_check_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs, return -ENOMEM; hwr.stat = hwr.cp; if (BNXT_NEW_RM(bp)) { - hwr.cp += bnxt_get_ulp_msix_num(bp); - hwr.stat += bnxt_get_ulp_stat_ctxs(bp); + hwr.cp += bnxt_get_ulp_msix_num_in_use(bp); + hwr.stat += bnxt_get_ulp_stat_ctxs_in_use(bp); hwr.grp = rx; hwr.rss_ctx = bnxt_get_total_rss_ctxs(bp, &hwr); } @@ -14899,8 +14921,9 @@ static void _bnxt_get_max_rings(struct bnxt *bp, int *max_rx, int *max_tx, *max_rx = hw_resc->max_rx_rings; *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), - hw_resc->max_stat_ctxs - bnxt_get_ulp_stat_ctxs(bp)); + bnxt_get_ulp_msix_num_in_use(bp), + hw_resc->max_stat_ctxs - + bnxt_get_ulp_stat_ctxs_in_use(bp)); if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS)) *max_cp = min_t(int, *max_cp, max_irq); max_ring_grps = hw_resc->max_hw_ring_grps; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c index de2cb1d4cd98..edb10aebd095 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c @@ -61,6 +61,13 @@ void bnxt_set_ulp_msix_num(struct bnxt *bp, int num) bp->edev->ulp_num_msix_vec = num; } +int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp) +{ + if (bnxt_ulp_registered(bp->edev)) + return bp->edev->ulp_num_msix_vec; + return 0; +} + int bnxt_get_ulp_stat_ctxs(struct bnxt *bp) { if (bp->edev) @@ -74,6 +81,13 @@ void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ulp_ctx) bp->edev->ulp_num_ctxs = num_ulp_ctx; } +int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp) +{ + if (bnxt_ulp_registered(bp->edev)) + return bp->edev->ulp_num_ctxs; + return 0; +} + void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp) { if (bp->edev) { diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h index 04ce3328e66f..b86baf901a5d 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h @@ -98,9 +98,11 @@ static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev) } int bnxt_get_ulp_msix_num(struct bnxt *bp); +int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp); void bnxt_set_ulp_msix_num(struct bnxt *bp, int num); int bnxt_get_ulp_stat_ctxs(struct bnxt *bp); void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs); +int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp); void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp); void bnxt_ulp_stop(struct bnxt *bp); void bnxt_ulp_start(struct bnxt *bp, int err); |