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[144.49.247.25]) by smtp-relay.gmail.com with ESMTPS id d2e1a72fcca58-8807594ba4bsm4330890b3a.1.2026.09.27.23.13.42 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 27 Sep 2026 23:13:43 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-dl1-f69.google.com with SMTP id a92af1059eb24-14373747468so2333000c88.1 for ; Sun, 27 Sep 2026 23:13:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1790576021; x=1791180821; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=WE4Cv98bDW+hRRiHKbwrrW8m8lRU20lfxVD76et98Lg=; b=Hc5+KVBUTOd9Zmx+zSS35TbS4t5d5g8rLG8BA6NsfJMC4Qp4Ml/SwmqYrT76aOwjL0 Xang/giiz3M/wu0fVhT5v2ydBCb5aZtNwrAv+icjq9xlD05inrfBVOTaoBFHA5xlpIbB Iy8igSCXPJ4C2qKfZHp7AmyTmDIrduhlpS508= X-Received: by 2002:a05:701b:21d3:20b0:143:2967:c0b1 with SMTP id a92af1059eb24-146cfdcf205mr8469007c88.25.1790576020275; Sun, 27 Sep 2026 23:13:40 -0700 (PDT) X-Received: by 2002:a05:701b:21d3:20b0:143:2967:c0b1 with SMTP id a92af1059eb24-146cfdcf205mr8468969c88.25.1790576019547; Sun, 27 Sep 2026 23:13:39 -0700 (PDT) Received: from H5S1 ([192.19.203.250]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-147913a776fsm17355561c88.17.2026.09.27.23.13.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2026 23:13:38 -0700 (PDT) From: Vikas Gupta To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bhargava.marreddy@broadcom.com, rahul-rg.gupta@broadcom.com, vsrama-krishna.nemani@broadcom.com, rajashekar.hudumula@broadcom.com, dharmender.garg@broadcom.com, ajit.khaparde@broadcom.com, Vikas Gupta Subject: [net-next, v4 04/10] bnge: add RXFH ethtool support Date: Mon, 28 Sep 2026 11:43:01 +0530 Message-ID: <20260928061307.1172344-5-vikas.gupta@broadcom.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260928061307.1172344-1-vikas.gupta@broadcom.com> References: <20260928061307.1172344-1-vikas.gupta@broadcom.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Introduce ethtool RXFH operations including get/set_rxfh for reading and programming the RSS hash key and indirection table. Currently set_rxfh and set_rxfh_fields are supported only while the device is down. A future patch series will rework bnge_close_core()/bnge_open_core() so they can be driven safely from the ethtool path, adding full functionality by applying the configuration on a live device. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Dharmender Garg --- drivers/net/ethernet/broadcom/bnge/bnge.h | 1 + .../net/ethernet/broadcom/bnge/bnge_ethtool.c | 281 ++++++++++++++++++ .../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 2 + .../net/ethernet/broadcom/bnge/bnge_netdev.c | 10 +- .../net/ethernet/broadcom/bnge/bnge_vnic.h | 1 + 5 files changed, 288 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h index a88aac140c7d..560b9d193dea 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge.h +++ b/drivers/net/ethernet/broadcom/bnge/bnge.h @@ -86,6 +86,7 @@ enum { BNGE_RSS_CAP_AH_V6_RSS_CAP = BIT(5), BNGE_RSS_CAP_ESP_V4_RSS_CAP = BIT(6), BNGE_RSS_CAP_ESP_V6_RSS_CAP = BIT(7), + BNGE_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP = BIT(8), }; #define BNGE_MAX_QUEUE 8 diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c b/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c index 2467e44de291..6fbda4fc1a0c 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_ethtool.c @@ -10,6 +10,9 @@ #include #include "bnge.h" +#include "bnge_netdev.h" +#include "bnge_vnic.h" +#include "bnge_resc.h" #include "bnge_ethtool.h" #include "bnge_hwrm_lib.h" @@ -740,6 +743,272 @@ static int bnge_set_pauseparam(struct net_device *dev, return rc; } +static u64 bnge_get_ethtool_ipv4_rss(struct bnge_dev *bd) +{ + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4) + return RXH_IP_SRC | RXH_IP_DST; + return 0; +} + +static u64 bnge_get_ethtool_ipv6_rss(struct bnge_dev *bd) +{ + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6) + return RXH_IP_SRC | RXH_IP_DST; + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL) + return RXH_IP_SRC | RXH_IP_DST | RXH_IP6_FL; + return 0; +} + +static int bnge_get_rxfh_fields(struct net_device *dev, + struct ethtool_rxfh_fields *cmd) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_dev *bd = bn->bd; + + cmd->data = 0; + switch (cmd->flow_type) { + case TCP_V4_FLOW: + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4) + cmd->data |= RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + cmd->data |= bnge_get_ethtool_ipv4_rss(bd); + break; + case UDP_V4_FLOW: + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4) + cmd->data |= RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + cmd->data |= bnge_get_ethtool_ipv4_rss(bd); + break; + case AH_ESP_V4_FLOW: + if (bd->rss_hash_cfg & + (VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV4 | + VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV4)) + cmd->data |= RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + cmd->data |= bnge_get_ethtool_ipv4_rss(bd); + break; + case SCTP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + case IPV4_FLOW: + cmd->data |= bnge_get_ethtool_ipv4_rss(bd); + break; + case TCP_V6_FLOW: + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6) + cmd->data |= RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + cmd->data |= bnge_get_ethtool_ipv6_rss(bd); + break; + case UDP_V6_FLOW: + if (bd->rss_hash_cfg & VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6) + cmd->data |= RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + cmd->data |= bnge_get_ethtool_ipv6_rss(bd); + break; + case AH_ESP_V6_FLOW: + if (bd->rss_hash_cfg & + (VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV6 | + VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV6)) + cmd->data |= RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + cmd->data |= bnge_get_ethtool_ipv6_rss(bd); + break; + case SCTP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case IPV6_FLOW: + cmd->data |= bnge_get_ethtool_ipv6_rss(bd); + break; + default: + return -EOPNOTSUPP; + } + + return 0; +} + +#define RXH_4TUPLE (RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3) +#define RXH_2TUPLE (RXH_IP_SRC | RXH_IP_DST) + +static int bnge_set_rxfh_fields(struct net_device *dev, + const struct ethtool_rxfh_fields *cmd, + struct netlink_ext_ack *extack) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_dev *bd = bn->bd; + u32 rss_hash_cfg; + int tuple; + + rss_hash_cfg = bd->rss_hash_cfg; + + if (cmd->data == RXH_4TUPLE || + cmd->data == (RXH_4TUPLE | RXH_IP6_FL)) + tuple = 4; + else if (cmd->data == RXH_2TUPLE || + cmd->data == (RXH_2TUPLE | RXH_IP6_FL)) + tuple = 2; + else if (!cmd->data) + tuple = 0; + else + return -EINVAL; + + if (cmd->data & RXH_IP6_FL && + !(bd->rss_cap & BNGE_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP)) + return -EINVAL; + + if (cmd->flow_type == TCP_V4_FLOW) { + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4; + if (tuple == 4) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4; + } else if (cmd->flow_type == UDP_V4_FLOW) { + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4; + if (tuple == 4) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4; + } else if (cmd->flow_type == TCP_V6_FLOW) { + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6; + if (tuple == 4) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6; + } else if (cmd->flow_type == UDP_V6_FLOW) { + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6; + if (tuple == 4) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6; + } else if (cmd->flow_type == AH_ESP_V4_FLOW) { + if (tuple == 4 && + (!(bd->rss_cap & BNGE_RSS_CAP_AH_V4_RSS_CAP) || + !(bd->rss_cap & BNGE_RSS_CAP_ESP_V4_RSS_CAP))) + return -EINVAL; + rss_hash_cfg &= ~(VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV4 | + VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV4); + if (tuple == 4) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV4 | + VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV4; + } else if (cmd->flow_type == AH_ESP_V6_FLOW) { + if (tuple == 4 && + (!(bd->rss_cap & BNGE_RSS_CAP_AH_V6_RSS_CAP) || + !(bd->rss_cap & BNGE_RSS_CAP_ESP_V6_RSS_CAP))) + return -EINVAL; + rss_hash_cfg &= ~(VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV6 | + VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV6); + if (tuple == 4) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_AH_SPI_IPV6 | + VNIC_RSS_CFG_REQ_HASH_TYPE_ESP_SPI_IPV6; + } else if (tuple == 4) { + return -EINVAL; + } + + switch (cmd->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + case AH_ESP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + case IPV4_FLOW: + if (tuple == 2) + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4; + else if (!tuple && cmd->flow_type == IPV4_FLOW) + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4; + break; + + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + case AH_ESP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case IPV6_FLOW: + if (cmd->data & RXH_IP6_FL) { + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL; + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6; + } else if (tuple == 2 || tuple == 4) { + rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6; + rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL; + } else if (!tuple && cmd->flow_type == IPV6_FLOW) { + rss_hash_cfg &= ~(VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6 | + VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6_FLOW_LABEL); + } + break; + default: + return -EOPNOTSUPP; + } + + if (bd->rss_hash_cfg == rss_hash_cfg) + return 0; + + if (netif_running(dev)) { + NL_SET_ERR_MSG_MOD(extack, + "RSS configuration can only be changed while the interface is down"); + return -EBUSY; + } + + bd->rss_hash_cfg = rss_hash_cfg; + + return 0; +} + +static u32 bnge_get_rxfh_indir_size_eth(struct net_device *dev) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_dev *bd = bn->bd; + + return bnge_get_rxfh_indir_size(bd); +} + +static u32 bnge_get_rxfh_key_size(struct net_device *dev) +{ + return HW_HASH_KEY_SIZE; +} + +static int bnge_get_rxfh(struct net_device *dev, + struct ethtool_rxfh_param *rxfh) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_dev *bd = bn->bd; + u32 i, tbl_size; + u32 *indir_tbl; + + indir_tbl = bd->rss_indir_tbl; + rxfh->hfunc = ETH_RSS_HASH_TOP; + + if (rxfh->indir && indir_tbl) { + tbl_size = bnge_get_rxfh_indir_size(bd); + for (i = 0; i < tbl_size; i++) + rxfh->indir[i] = indir_tbl[i]; + } + + if (rxfh->key) + memcpy(rxfh->key, bn->rss_hash_key, HW_HASH_KEY_SIZE); + + return 0; +} + +static int bnge_set_rxfh(struct net_device *dev, + struct ethtool_rxfh_param *rxfh, + struct netlink_ext_ack *extack) +{ + struct bnge_net *bn = netdev_priv(dev); + + if (rxfh->hfunc && rxfh->hfunc != ETH_RSS_HASH_TOP) + return -EOPNOTSUPP; + + if (netif_running(dev)) { + NL_SET_ERR_MSG_MOD(extack, + "RSS configuration can only be changed while the interface is down"); + return -EBUSY; + } + + bnge_modify_rss(bn, NULL, NULL, rxfh); + + return 0; +} + +static u32 bnge_get_rx_ring_count(struct net_device *dev) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_dev *bd = bn->bd; + + return bd->rx_nr_rings; +} + static const struct ethtool_ops bnge_ethtool_ops = { .cap_link_lanes_supported = 1, .get_link_ksettings = bnge_get_link_ksettings, @@ -757,6 +1026,18 @@ static const struct ethtool_ops bnge_ethtool_ops = { .get_eth_ctrl_stats = bnge_get_eth_ctrl_stats, .get_pause_stats = bnge_get_pause_stats, .get_rmon_stats = bnge_get_rmon_stats, + /* RXFH */ + .rxfh_per_ctx_key = 1, + .rxfh_max_num_contexts = BNGE_MAX_ETH_RSS_CTX + 1, + .rxfh_indir_space = BNGE_MAX_RSS_TABLE_ENTRIES, + .rxfh_priv_size = sizeof(struct bnge_rss_ctx), + .get_rx_ring_count = bnge_get_rx_ring_count, + .get_rxfh_indir_size = bnge_get_rxfh_indir_size_eth, + .get_rxfh_key_size = bnge_get_rxfh_key_size, + .get_rxfh = bnge_get_rxfh, + .set_rxfh = bnge_set_rxfh, + .get_rxfh_fields = bnge_get_rxfh_fields, + .set_rxfh_fields = bnge_set_rxfh_fields, }; void bnge_set_ethtool_ops(struct net_device *dev) diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c index 91d246c8dcf2..86edb70d323e 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c @@ -676,6 +676,8 @@ int bnge_hwrm_vnic_qcaps(struct bnge_dev *bd) bd->rss_cap |= BNGE_RSS_CAP_ESP_V4_RSS_CAP; if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_IPSEC_ESP_SPI_IPV6_CAP) bd->rss_cap |= BNGE_RSS_CAP_ESP_V6_RSS_CAP; + if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_IPV6_FLOW_LABEL_CAP) + bd->rss_cap |= BNGE_RSS_CAP_IPV6_FLOW_LABEL_RSS_CAP; } bnge_hwrm_req_drop(bd, req); diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c index c6b9048586b3..ef5d13337e60 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c @@ -1739,13 +1739,6 @@ static void bnge_init_vnics(struct bnge_net *bn) u8 *key = (void *)vnic->rss_hash_key; int k; - if (!bn->rss_hash_key_valid && - !bn->rss_hash_key_updated) { - get_random_bytes(bn->rss_hash_key, - HW_HASH_KEY_SIZE); - bn->rss_hash_key_updated = true; - } - memcpy(vnic->rss_hash_key, bn->rss_hash_key, HW_HASH_KEY_SIZE); @@ -3398,6 +3391,9 @@ int bnge_netdev_alloc(struct bnge_dev *bd, int max_irqs) bn->tx_ring_size = BNGE_DEFAULT_TX_RING_SIZE; bn->rx_dir = DMA_FROM_DEVICE; + netdev_rss_key_fill(bn->rss_hash_key, sizeof(bn->rss_hash_key)); + bn->rss_hash_key_updated = true; + bnge_set_tpa_flags(bd); bnge_init_ring_params(bn); bnge_set_ring_params(bd); diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h b/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h index ff7244cdf1a8..bc2ed911ced3 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h +++ b/drivers/net/ethernet/broadcom/bnge/bnge_vnic.h @@ -16,6 +16,7 @@ struct bnge_l2_filter; #define BNGE_MAX_RSS_TABLE_ENTRIES \ (BNGE_RSS_TABLE_ENTRIES * BNGE_RSS_TABLE_MAX_TBL) +#define BNGE_MAX_ETH_RSS_CTX 32 #define BNGE_MAX_CTX_PER_VNIC 8 #define BNGE_MAX_MC_ADDRS 16 -- 2.52.0