From bf82736da3c376c03a42c74ea6fa971e89740d7a Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Sun, 5 Aug 2018 16:51:50 -0400 Subject: [PATCH] bnxt_en: Add new VF resource allocation strategy mode. The new mode is "minimal-static" to be used when resources are more limited to support a large number of VFs, for example The PF driver will provision guaranteed minimum resources of 0. Each VF has no guranteed resources until it tries to reserve resources during device open. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + .../net/ethernet/broadcom/bnxt/bnxt_sriov.c | 23 +++++++++++-------- 3 files changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index fd936c5e8760..e0e3b4b72c01 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -5162,7 +5162,7 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all) pf->vf_resv_strategy = le16_to_cpu(resp->vf_reservation_strategy); - if (pf->vf_resv_strategy > BNXT_VF_RESV_STRATEGY_MINIMAL) + if (pf->vf_resv_strategy > BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) pf->vf_resv_strategy = BNXT_VF_RESV_STRATEGY_MAXIMAL; } hwrm_func_resc_qcaps_exit: diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 47eec148e745..b44a75874a2f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -862,6 +862,7 @@ struct bnxt_pf_info { u8 vf_resv_strategy; #define BNXT_VF_RESV_STRATEGY_MAXIMAL 0 #define BNXT_VF_RESV_STRATEGY_MINIMAL 1 +#define BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC 2 void *hwrm_cmd_req_addr[4]; dma_addr_t hwrm_cmd_req_dma_addr[4]; struct bnxt_vf_info *vf; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c index f560845c5a9d..b896a52ee8be 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c @@ -447,7 +447,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs) u16 vf_tx_rings, vf_rx_rings, vf_cp_rings; u16 vf_stat_ctx, vf_vnics, vf_ring_grps; struct bnxt_pf_info *pf = &bp->pf; - int i, rc = 0; + int i, rc = 0, min = 1; bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1); @@ -464,14 +464,19 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs) 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) { - req.min_cmpl_rings = cpu_to_le16(1); - req.min_tx_rings = cpu_to_le16(1); - req.min_rx_rings = cpu_to_le16(1); - req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MIN_L2_CTX); - req.min_vnics = cpu_to_le16(1); - req.min_stat_ctx = cpu_to_le16(1); - req.min_hw_ring_grps = cpu_to_le16(1); + if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) { + min = 0; + req.min_rsscos_ctx = cpu_to_le16(min); + } + if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL || + pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) { + req.min_cmpl_rings = cpu_to_le16(min); + req.min_tx_rings = cpu_to_le16(min); + req.min_rx_rings = cpu_to_le16(min); + req.min_l2_ctxs = cpu_to_le16(min); + req.min_vnics = cpu_to_le16(min); + req.min_stat_ctx = cpu_to_le16(min); + req.min_hw_ring_grps = cpu_to_le16(min); } else { vf_cp_rings /= num_vfs; vf_tx_rings /= num_vfs; -- GitLab