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bnxt_en: Support RSS contexts in ethtool .{get|set}_rxfh()
Support up to 32 RSS contexts per device if supported by the device. 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/20240325222902.220712-11-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavan Chebbi
Jakub Kicinski
parent
77a614f749
commit
b3d0083caf
3 changed files with 196 additions and 8 deletions
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@ -5939,7 +5939,7 @@ static void bnxt_hwrm_vnic_update_tunl_tpa(struct bnxt *bp,
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req->tnl_tpa_en_bitmap = cpu_to_le32(tunl_tpa_bmap);
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}
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static int bnxt_hwrm_vnic_set_tpa(struct bnxt *bp, struct bnxt_vnic_info *vnic,
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int bnxt_hwrm_vnic_set_tpa(struct bnxt *bp, struct bnxt_vnic_info *vnic,
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u32 tpa_flags)
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{
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u16 max_aggs = VNIC_TPA_CFG_REQ_MAX_AGGS_MAX;
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@ -6129,6 +6129,8 @@ static void bnxt_fill_hw_rss_tbl_p5(struct bnxt *bp,
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if (vnic->flags & BNXT_VNIC_NTUPLE_FLAG)
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j = ethtool_rxfh_indir_default(i, bp->rx_nr_rings);
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else if (vnic->flags & BNXT_VNIC_RSSCTX_FLAG)
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j = vnic->rss_ctx->rss_indir_tbl[i];
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else
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j = bp->rss_indir_tbl[i];
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rxr = &bp->rx_ring[j];
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@ -6423,7 +6425,7 @@ static void bnxt_hwrm_vnic_free(struct bnxt *bp)
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bnxt_hwrm_vnic_free_one(bp, &bp->vnic_info[i]);
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}
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static int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic,
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int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic,
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unsigned int start_rx_ring_idx,
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unsigned int nr_rings)
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{
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@ -9852,7 +9854,7 @@ int bnxt_hwrm_vnic_rss_cfg_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic)
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return rc;
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}
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static int __bnxt_setup_vnic_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic)
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int __bnxt_setup_vnic_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic)
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{
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int rc, i, nr_ctxs;
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@ -9939,15 +9941,46 @@ static int bnxt_alloc_rfs_vnics(struct bnxt *bp)
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void bnxt_del_one_rss_ctx(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx,
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bool all)
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{
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struct bnxt_vnic_info *vnic = &rss_ctx->vnic;
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int i;
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bnxt_hwrm_vnic_free_one(bp, &rss_ctx->vnic);
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for (i = 0; i < BNXT_MAX_CTX_PER_VNIC; i++) {
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if (vnic->fw_rss_cos_lb_ctx[i] != INVALID_HW_RING_ID)
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bnxt_hwrm_vnic_ctx_free_one(bp, vnic, i);
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}
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if (!all)
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return;
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if (vnic->rss_table)
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dma_free_coherent(&bp->pdev->dev, vnic->rss_table_size,
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vnic->rss_table,
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vnic->rss_table_dma_addr);
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kfree(rss_ctx->rss_indir_tbl);
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list_del(&rss_ctx->list);
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bp->num_rss_ctx--;
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clear_bit(rss_ctx->index, bp->rss_ctx_bmap);
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kfree(rss_ctx);
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}
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static void bnxt_hwrm_realloc_rss_ctx_vnic(struct bnxt *bp)
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{
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bool set_tpa = !!(bp->flags & BNXT_FLAG_TPA);
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struct bnxt_rss_ctx *rss_ctx, *tmp;
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list_for_each_entry_safe(rss_ctx, tmp, &bp->rss_ctx_list, list) {
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struct bnxt_vnic_info *vnic = &rss_ctx->vnic;
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if (bnxt_hwrm_vnic_alloc(bp, vnic, 0, bp->rx_nr_rings) ||
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bnxt_hwrm_vnic_set_tpa(bp, vnic, set_tpa) ||
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__bnxt_setup_vnic_p5(bp, vnic)) {
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netdev_err(bp->dev, "Failed to restore RSS ctx %d\n",
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rss_ctx->index);
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bnxt_del_one_rss_ctx(bp, rss_ctx, true);
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}
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}
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}
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struct bnxt_rss_ctx *bnxt_alloc_rss_ctx(struct bnxt *bp)
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{
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struct bnxt_rss_ctx *rss_ctx = NULL;
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@ -11829,6 +11862,8 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init)
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bnxt_vf_reps_open(bp);
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bnxt_ptp_init_rtc(bp, true);
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bnxt_ptp_cfg_tstamp_filters(bp);
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if (BNXT_SUPPORTS_MULTI_RSS_CTX(bp))
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bnxt_hwrm_realloc_rss_ctx_vnic(bp);
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bnxt_cfg_usr_fltrs(bp);
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return 0;
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@ -11977,6 +12012,8 @@ static void __bnxt_close_nic(struct bnxt *bp, bool irq_re_init,
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while (bnxt_drv_busy(bp))
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msleep(20);
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if (BNXT_SUPPORTS_MULTI_RSS_CTX(bp))
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bnxt_clear_rss_ctxs(bp, false);
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/* Flush rings and disable interrupts */
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bnxt_shutdown_nic(bp, irq_re_init);
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@ -1270,6 +1270,7 @@ struct bnxt_rss_ctx {
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#define BNXT_MAX_ETH_RSS_CTX 32
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#define BNXT_RSS_CTX_BMAP_LEN (BNXT_MAX_ETH_RSS_CTX + 1)
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#define BNXT_VNIC_ID_INVALID 0xffffffff
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struct bnxt_hw_rings {
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int tx;
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@ -2714,11 +2715,16 @@ int bnxt_hwrm_cfa_ntuple_filter_free(struct bnxt *bp,
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struct bnxt_ntuple_filter *fltr);
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int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt *bp,
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struct bnxt_ntuple_filter *fltr);
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int bnxt_hwrm_vnic_set_tpa(struct bnxt *bp, struct bnxt_vnic_info *vnic,
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u32 tpa_flags);
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void bnxt_fill_ipv6_mask(__be32 mask[4]);
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int bnxt_alloc_rss_indir_tbl(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx);
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void bnxt_set_dflt_rss_indir_tbl(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx);
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int bnxt_get_nr_rss_ctxs(struct bnxt *bp, int rx_rings);
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int bnxt_hwrm_vnic_cfg(struct bnxt *bp, struct bnxt_vnic_info *vnic);
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int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic,
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unsigned int start_rx_ring_idx,
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unsigned int nr_rings);
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int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings);
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int bnxt_nq_rings_in_use(struct bnxt *bp);
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int bnxt_hwrm_set_coal(struct bnxt *);
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@ -2745,6 +2751,7 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all);
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int bnxt_hwrm_func_qcaps(struct bnxt *bp);
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int bnxt_hwrm_fw_set_time(struct bnxt *);
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int bnxt_hwrm_vnic_rss_cfg_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic);
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int __bnxt_setup_vnic_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic);
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void bnxt_del_one_rss_ctx(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx,
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bool all);
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struct bnxt_rss_ctx *bnxt_alloc_rss_ctx(struct bnxt *bp);
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@ -1207,6 +1207,36 @@ static int bnxt_grxclsrule(struct bnxt *bp, struct ethtool_rxnfc *cmd)
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return rc;
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}
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static struct bnxt_rss_ctx *bnxt_get_rss_ctx_from_index(struct bnxt *bp,
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u32 index)
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{
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struct bnxt_rss_ctx *rss_ctx, *tmp;
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list_for_each_entry_safe(rss_ctx, tmp, &bp->rss_ctx_list, list)
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if (rss_ctx->index == index)
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return rss_ctx;
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return NULL;
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}
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static int bnxt_alloc_rss_ctx_rss_table(struct bnxt *bp,
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struct bnxt_rss_ctx *rss_ctx)
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{
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int size = L1_CACHE_ALIGN(BNXT_MAX_RSS_TABLE_SIZE_P5);
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struct bnxt_vnic_info *vnic = &rss_ctx->vnic;
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vnic->rss_table_size = size + HW_HASH_KEY_SIZE;
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vnic->rss_table = dma_alloc_coherent(&bp->pdev->dev,
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vnic->rss_table_size,
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&vnic->rss_table_dma_addr,
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GFP_KERNEL);
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if (!vnic->rss_table)
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return -ENOMEM;
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vnic->rss_hash_key = ((void *)vnic->rss_table) + size;
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vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr + size;
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return 0;
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}
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static int bnxt_add_l2_cls_rule(struct bnxt *bp,
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struct ethtool_rx_flow_spec *fs)
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{
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@ -1756,7 +1786,10 @@ static u32 bnxt_get_rxfh_key_size(struct net_device *dev)
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static int bnxt_get_rxfh(struct net_device *dev,
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struct ethtool_rxfh_param *rxfh)
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{
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u32 rss_context = rxfh->rss_context;
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struct bnxt_rss_ctx *rss_ctx = NULL;
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struct bnxt *bp = netdev_priv(dev);
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u16 *indir_tbl = bp->rss_indir_tbl;
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struct bnxt_vnic_info *vnic;
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u32 i, tbl_size;
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@ -1766,10 +1799,18 @@ static int bnxt_get_rxfh(struct net_device *dev,
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return 0;
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vnic = &bp->vnic_info[BNXT_VNIC_DEFAULT];
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if (rxfh->indir && bp->rss_indir_tbl) {
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if (rxfh->rss_context) {
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rss_ctx = bnxt_get_rss_ctx_from_index(bp, rss_context);
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if (!rss_ctx)
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return -EINVAL;
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indir_tbl = rss_ctx->rss_indir_tbl;
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vnic = &rss_ctx->vnic;
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}
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if (rxfh->indir && indir_tbl) {
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tbl_size = bnxt_get_rxfh_indir_size(dev);
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for (i = 0; i < tbl_size; i++)
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rxfh->indir[i] = bp->rss_indir_tbl[i];
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rxfh->indir[i] = indir_tbl[i];
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}
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if (rxfh->key && vnic->rss_hash_key)
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@ -1804,6 +1845,105 @@ static void bnxt_modify_rss(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx,
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}
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}
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static int bnxt_set_rxfh_context(struct bnxt *bp,
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struct ethtool_rxfh_param *rxfh,
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struct netlink_ext_ack *extack)
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{
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u32 *rss_context = &rxfh->rss_context;
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struct bnxt_rss_ctx *rss_ctx;
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struct bnxt_vnic_info *vnic;
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bool modify = false;
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int bit_id;
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int rc;
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if (!BNXT_SUPPORTS_MULTI_RSS_CTX(bp)) {
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NL_SET_ERR_MSG_MOD(extack, "RSS contexts not supported");
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return -EOPNOTSUPP;
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}
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if (*rss_context != ETH_RXFH_CONTEXT_ALLOC) {
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rss_ctx = bnxt_get_rss_ctx_from_index(bp, *rss_context);
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if (!rss_ctx) {
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NL_SET_ERR_MSG_FMT_MOD(extack, "RSS context %u not found",
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*rss_context);
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return -EINVAL;
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}
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if (*rss_context && rxfh->rss_delete) {
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bnxt_del_one_rss_ctx(bp, rss_ctx, true);
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return 0;
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}
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modify = true;
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vnic = &rss_ctx->vnic;
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goto modify_context;
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}
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if (bp->num_rss_ctx >= BNXT_MAX_ETH_RSS_CTX) {
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NL_SET_ERR_MSG_FMT_MOD(extack, "Out of RSS contexts, maximum %u",
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BNXT_MAX_ETH_RSS_CTX);
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return -EINVAL;
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}
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if (!bnxt_rfs_capable(bp, true)) {
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NL_SET_ERR_MSG_MOD(extack, "Out hardware resources");
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return -ENOMEM;
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}
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rss_ctx = bnxt_alloc_rss_ctx(bp);
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if (!rss_ctx)
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return -ENOMEM;
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vnic = &rss_ctx->vnic;
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vnic->flags |= BNXT_VNIC_RSSCTX_FLAG;
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vnic->vnic_id = BNXT_VNIC_ID_INVALID;
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rc = bnxt_alloc_rss_ctx_rss_table(bp, rss_ctx);
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if (rc)
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goto out;
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rc = bnxt_alloc_rss_indir_tbl(bp, rss_ctx);
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if (rc)
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goto out;
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bnxt_set_dflt_rss_indir_tbl(bp, rss_ctx);
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memcpy(vnic->rss_hash_key, bp->rss_hash_key, HW_HASH_KEY_SIZE);
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rc = bnxt_hwrm_vnic_alloc(bp, vnic, 0, bp->rx_nr_rings);
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if (rc) {
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NL_SET_ERR_MSG_MOD(extack, "Unable to allocate VNIC");
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goto out;
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}
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rc = bnxt_hwrm_vnic_set_tpa(bp, vnic, bp->flags & BNXT_FLAG_TPA);
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if (rc) {
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NL_SET_ERR_MSG_MOD(extack, "Unable to setup TPA");
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goto out;
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}
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modify_context:
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bnxt_modify_rss(bp, rss_ctx, rxfh);
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if (modify)
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return bnxt_hwrm_vnic_rss_cfg_p5(bp, vnic);
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rc = __bnxt_setup_vnic_p5(bp, vnic);
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if (rc) {
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NL_SET_ERR_MSG_MOD(extack, "Unable to setup TPA");
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goto out;
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}
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bit_id = bitmap_find_free_region(bp->rss_ctx_bmap,
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BNXT_RSS_CTX_BMAP_LEN, 0);
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if (bit_id < 0) {
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rc = -ENOMEM;
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goto out;
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}
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rss_ctx->index = (u16)bit_id;
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*rss_context = rss_ctx->index;
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return 0;
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out:
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bnxt_del_one_rss_ctx(bp, rss_ctx, true);
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return rc;
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}
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static int bnxt_set_rxfh(struct net_device *dev,
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struct ethtool_rxfh_param *rxfh,
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struct netlink_ext_ack *extack)
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@ -1814,6 +1954,9 @@ static int bnxt_set_rxfh(struct net_device *dev,
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if (rxfh->hfunc && rxfh->hfunc != ETH_RSS_HASH_TOP)
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return -EOPNOTSUPP;
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if (rxfh->rss_context)
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return bnxt_set_rxfh_context(bp, rxfh, extack);
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bnxt_modify_rss(bp, NULL, rxfh);
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bnxt_clear_usr_fltrs(bp, false);
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@ -5087,6 +5230,7 @@ void bnxt_ethtool_free(struct bnxt *bp)
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const struct ethtool_ops bnxt_ethtool_ops = {
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.cap_link_lanes_supported = 1,
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.cap_rss_ctx_supported = 1,
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.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
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ETHTOOL_COALESCE_MAX_FRAMES |
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ETHTOOL_COALESCE_USECS_IRQ |
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