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bnxt_en: Assign more RSS context resources to the VFs.

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The driver currently only assignes 1 RSS context to each VF.  This works
for the Linux VF driver.  But other drivers, such as DPDK, can make use
of additional RSS contexts.  Modify the code to divide up and assign
RSS contexts to VFs just like other resources.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
Michael Chan 2019-11-23 22:30:45 -05:00 committed by Jakub Kicinski
parent 3be8136ce1
commit 1acefc9aed
1 changed files with 6 additions and 2 deletions
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8
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
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@ -515,6 +515,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
struct bnxt_pf_info *pf = &bp->pf;
int i, rc = 0, min = 1;
u16 vf_msix = 0;
u16 vf_rss;
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
@ -533,9 +534,9 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
req.max_rsscos_ctx = cpu_to_le16(BNXT_VF_MAX_RSS_CTX);
if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
min = 0;
req.min_rsscos_ctx = cpu_to_le16(min);
@ -557,6 +558,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
vf_vnics /= num_vfs;
vf_stat_ctx /= num_vfs;
vf_ring_grps /= num_vfs;
vf_rss /= num_vfs;
req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
req.min_tx_rings = cpu_to_le16(vf_tx_rings);
@ -565,6 +567,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
req.min_vnics = cpu_to_le16(vf_vnics);
req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
req.min_rsscos_ctx = cpu_to_le16(vf_rss);
}
req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
req.max_tx_rings = cpu_to_le16(vf_tx_rings);
@ -573,6 +576,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
req.max_vnics = cpu_to_le16(vf_vnics);
req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
req.max_rsscos_ctx = cpu_to_le16(vf_rss);
if (bp->flags & BNXT_FLAG_CHIP_P5)
req.max_msix = cpu_to_le16(vf_msix / num_vfs);
@ -598,7 +602,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
n;
hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
hw_resc->max_rsscos_ctxs -= pf->active_vfs;
hw_resc->max_rsscos_ctxs -= le16_to_cpu(req.min_rsscos_ctx) * n;
hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
if (bp->flags & BNXT_FLAG_CHIP_P5)