From patchwork Wed Nov 21 08:10:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ganesh Goudar X-Patchwork-Id: 10692093 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6CBF614BD for ; Wed, 21 Nov 2018 08:10:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C6832B8BC for ; Wed, 21 Nov 2018 08:10:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 506552B8CF; Wed, 21 Nov 2018 08:10:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D5A62B8BC for ; Wed, 21 Nov 2018 08:10:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728464AbeKUSoW (ORCPT ); Wed, 21 Nov 2018 13:44:22 -0500 Received: from stargate.chelsio.com ([12.32.117.8]:63117 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726195AbeKUSoW (ORCPT ); Wed, 21 Nov 2018 13:44:22 -0500 Received: from localhost (victim.blr.asicdesigners.com [10.193.185.129]) by stargate.chelsio.com (8.13.8/8.13.8) with ESMTP id wAL8Akor017654; Wed, 21 Nov 2018 00:10:47 -0800 From: Ganesh Goudar To: netdev@vger.kernel.org, davem@davemloft.net Cc: nirranjan@chelsio.com, indranil@chelsio.com, dt@chelsio.com, linux-rdma@vger.kernel.org, swise@opengridcomputing.com, linux-crypto@vger.kernel.org, atul.gupta@chelsio.com, linux-scsi@vger.kernel.org, varun@chelsio.com, Santosh Rastapur , Ganesh Goudar Subject: [PATCH net-next] cxgb4: use new fw interface to get the VIN and smt index Date: Wed, 21 Nov 2018 13:40:24 +0530 Message-Id: <1542787824-4731-1-git-send-email-ganeshgr@chelsio.com> X-Mailer: git-send-email 2.1.0 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Santosh Rastapur If the fw supports returning VIN/VIVLD in FW_VI_CMD save it in port_info structure else retrieve these from viid and save them in port_info structure. Do the same for smt_idx from FW_VI_MAC_CMD Signed-off-by: Santosh Rastapur Signed-off-by: Ganesh Goudar --- drivers/crypto/chelsio/chtls/chtls_cm.c | 3 +- drivers/infiniband/hw/cxgb4/cm.c | 6 +-- drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 12 ++++- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 58 ++++++++++++------------- drivers/net/ethernet/chelsio/cxgb4/l2t.c | 13 +++--- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 46 ++++++++++++++++++-- drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h | 20 +++++++++ drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 3 +- drivers/target/iscsi/cxgbit/cxgbit_cm.c | 8 ++-- 9 files changed, 114 insertions(+), 55 deletions(-) diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.c b/drivers/crypto/chelsio/chtls/chtls_cm.c index 20209e2..228b91b 100644 --- a/drivers/crypto/chelsio/chtls/chtls_cm.c +++ b/drivers/crypto/chelsio/chtls/chtls_cm.c @@ -1074,8 +1074,7 @@ static struct sock *chtls_recv_sock(struct sock *lsk, csk->txq_idx = (rxq_idx < cdev->lldi->ntxq) ? rxq_idx : port_id * step; csk->sndbuf = newsk->sk_sndbuf; - csk->smac_idx = cxgb4_tp_smt_idx(cdev->lldi->adapter_type, - cxgb4_port_viid(ndev)); + csk->smac_idx = ((struct port_info *)netdev_priv(ndev))->smt_idx; tp->rcv_wnd = select_rcv_wnd(csk); RCV_WSCALE(tp) = select_rcv_wscale(tcp_full_space(newsk), WSCALE_OK(tp), diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 8ed01e0..97ecc8c 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -2058,8 +2058,7 @@ static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, } ep->mtu = pdev->mtu; ep->tx_chan = cxgb4_port_chan(pdev); - ep->smac_idx = cxgb4_tp_smt_idx(adapter_type, - cxgb4_port_viid(pdev)); + ep->smac_idx = ((struct port_info *)netdev_priv(pdev))->smt_idx; step = cdev->rdev.lldi.ntxq / cdev->rdev.lldi.nchan; ep->txq_idx = cxgb4_port_idx(pdev) * step; @@ -2078,8 +2077,7 @@ static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, goto out; ep->mtu = dst_mtu(dst); ep->tx_chan = cxgb4_port_chan(pdev); - ep->smac_idx = cxgb4_tp_smt_idx(adapter_type, - cxgb4_port_viid(pdev)); + ep->smac_idx = ((struct port_info *)netdev_priv(pdev))->smt_idx; step = cdev->rdev.lldi.ntxq / cdev->rdev.lldi.nchan; ep->txq_idx = cxgb4_port_idx(pdev) * step; diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index b16f4b3e..2d1ca92 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -404,6 +404,7 @@ struct adapter_params { bool fr_nsmr_tpte_wr_support; /* FW support for FR_NSMR_TPTE_WR */ u8 fw_caps_support; /* 32-bit Port Capabilities */ bool filter2_wr_support; /* FW support for FILTER2_WR */ + unsigned int viid_smt_extn_support:1; /* FW returns vin and smt index */ /* MPS Buffer Group Map[per Port]. Bit i is set if buffer group i is * used by the Port @@ -592,6 +593,13 @@ struct port_info { bool ptp_enable; struct sched_table *sched_tbl; u32 eth_flags; + + /* viid and smt fields either returned by fw + * or decoded by parsing viid by driver. + */ + u8 vin; + u8 vivld; + u8 smt_idx; }; struct dentry; @@ -1757,7 +1765,7 @@ int t4_cfg_pfvf(struct adapter *adap, unsigned int mbox, unsigned int pf, unsigned int nexact, unsigned int rcaps, unsigned int wxcaps); int t4_alloc_vi(struct adapter *adap, unsigned int mbox, unsigned int port, unsigned int pf, unsigned int vf, unsigned int nmac, u8 *mac, - unsigned int *rss_size); + unsigned int *rss_size, u8 *vivld, u8 *vin); int t4_free_vi(struct adapter *adap, unsigned int mbox, unsigned int pf, unsigned int vf, unsigned int viid); @@ -1783,7 +1791,7 @@ int t4_free_mac_filt(struct adapter *adap, unsigned int mbox, unsigned int viid, unsigned int naddr, const u8 **addr, bool sleep_ok); int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid, - int idx, const u8 *addr, bool persist, bool add_smt); + int idx, const u8 *addr, bool persist, u8 *smt_idx); int t4_set_addr_hash(struct adapter *adap, unsigned int mbox, unsigned int viid, bool ucast, u64 vec, bool sleep_ok); int t4_enable_vi_params(struct adapter *adap, unsigned int mbox, diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 956e708..d35985f 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -453,7 +453,7 @@ static int link_start(struct net_device *dev) if (ret == 0) { ret = t4_change_mac(pi->adapter, mb, pi->viid, pi->xact_addr_filt, dev->dev_addr, true, - true); + &pi->smt_idx); if (ret >= 0) { pi->xact_addr_filt = ret; ret = 0; @@ -1585,28 +1585,6 @@ unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus, EXPORT_SYMBOL(cxgb4_best_aligned_mtu); /** - * cxgb4_tp_smt_idx - Get the Source Mac Table index for this VI - * @chip: chip type - * @viid: VI id of the given port - * - * Return the SMT index for this VI. - */ -unsigned int cxgb4_tp_smt_idx(enum chip_type chip, unsigned int viid) -{ - /* In T4/T5, SMT contains 256 SMAC entries organized in - * 128 rows of 2 entries each. - * In T6, SMT contains 256 SMAC entries in 256 rows. - * TODO: The below code needs to be updated when we add support - * for 256 VFs. - */ - if (CHELSIO_CHIP_VERSION(chip) <= CHELSIO_T5) - return ((viid & 0x7f) << 1); - else - return (viid & 0x7f); -} -EXPORT_SYMBOL(cxgb4_tp_smt_idx); - -/** * cxgb4_port_chan - get the HW channel of a port * @dev: the net device for the port * @@ -2871,7 +2849,8 @@ static int cxgb_set_mac_addr(struct net_device *dev, void *p) return -EADDRNOTAVAIL; ret = t4_change_mac(pi->adapter, pi->adapter->pf, pi->viid, - pi->xact_addr_filt, addr->sa_data, true, true); + pi->xact_addr_filt, addr->sa_data, true, + &pi->smt_idx); if (ret < 0) return ret; @@ -4475,6 +4454,15 @@ static int adap_init0(struct adapter *adap) adap->params.filter2_wr_support = (ret == 0 && val[0] != 0); } + /* Check if FW supports returning vin and smt index. + * If this is not supported, driver will interpret + * these values from viid. + */ + params[0] = FW_PARAM_DEV(OPAQUE_VIID_SMT_EXTN); + ret = t4_query_params(adap, adap->mbox, adap->pf, 0, + 1, params, val); + adap->params.viid_smt_extn_support = (ret == 0 && val[0] != 0); + /* * Get device capabilities so we can determine what resources we need * to manage. @@ -4785,14 +4773,26 @@ static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev) return PCI_ERS_RESULT_DISCONNECT; for_each_port(adap, i) { - struct port_info *p = adap2pinfo(adap, i); + struct port_info *pi = adap2pinfo(adap, i); + u8 vivld = 0, vin = 0; - ret = t4_alloc_vi(adap, adap->mbox, p->tx_chan, adap->pf, 0, 1, - NULL, NULL); + ret = t4_alloc_vi(adap, adap->mbox, pi->tx_chan, adap->pf, 0, 1, + NULL, NULL, &vivld, &vin); if (ret < 0) return PCI_ERS_RESULT_DISCONNECT; - p->viid = ret; - p->xact_addr_filt = -1; + pi->viid = ret; + pi->xact_addr_filt = -1; + /* If fw supports returning the VIN as part of FW_VI_CMD, + * save the returned values. + */ + if (adap->params.viid_smt_extn_support) { + pi->vivld = vivld; + pi->vin = vin; + } else { + /* Retrieve the values from VIID */ + pi->vivld = FW_VIID_VIVLD_G(pi->viid); + pi->vin = FW_VIID_VIN_G(pi->viid); + } } t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd, diff --git a/drivers/net/ethernet/chelsio/cxgb4/l2t.c b/drivers/net/ethernet/chelsio/cxgb4/l2t.c index 99022c0..4852feb 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/l2t.c +++ b/drivers/net/ethernet/chelsio/cxgb4/l2t.c @@ -495,14 +495,11 @@ u64 cxgb4_select_ntuple(struct net_device *dev, ntuple |= (u64)IPPROTO_TCP << tp->protocol_shift; if (tp->vnic_shift >= 0 && (tp->ingress_config & VNIC_F)) { - u32 viid = cxgb4_port_viid(dev); - u32 vf = FW_VIID_VIN_G(viid); - u32 pf = FW_VIID_PFN_G(viid); - u32 vld = FW_VIID_VIVLD_G(viid); - - ntuple |= (u64)(FT_VNID_ID_VF_V(vf) | - FT_VNID_ID_PF_V(pf) | - FT_VNID_ID_VLD_V(vld)) << tp->vnic_shift; + struct port_info *pi = (struct port_info *)netdev_priv(dev); + + ntuple |= (u64)(FT_VNID_ID_VF_V(pi->vin) | + FT_VNID_ID_PF_V(adap->pf) | + FT_VNID_ID_VLD_V(pi->vivld)) << tp->vnic_shift; } return ntuple; diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index cb52394..7f484c6 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -7488,7 +7488,7 @@ int t4_cfg_pfvf(struct adapter *adap, unsigned int mbox, unsigned int pf, */ int t4_alloc_vi(struct adapter *adap, unsigned int mbox, unsigned int port, unsigned int pf, unsigned int vf, unsigned int nmac, u8 *mac, - unsigned int *rss_size) + unsigned int *rss_size, u8 *vivld, u8 *vin) { int ret; struct fw_vi_cmd c; @@ -7523,6 +7523,13 @@ int t4_alloc_vi(struct adapter *adap, unsigned int mbox, unsigned int port, } if (rss_size) *rss_size = FW_VI_CMD_RSSSIZE_G(be16_to_cpu(c.rsssize_pkd)); + + if (vivld) + *vivld = FW_VI_CMD_VFVLD_G(be32_to_cpu(c.alloc_to_len16)); + + if (vin) + *vin = FW_VI_CMD_VIN_G(be32_to_cpu(c.alloc_to_len16)); + return FW_VI_CMD_VIID_G(be16_to_cpu(c.type_viid)); } @@ -7980,7 +7987,7 @@ int t4_free_mac_filt(struct adapter *adap, unsigned int mbox, * MAC value. */ int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid, - int idx, const u8 *addr, bool persist, bool add_smt) + int idx, const u8 *addr, bool persist, u8 *smt_idx) { int ret, mode; struct fw_vi_mac_cmd c; @@ -7989,7 +7996,7 @@ int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid, if (idx < 0) /* new allocation */ idx = persist ? FW_VI_MAC_ADD_PERSIST_MAC : FW_VI_MAC_ADD_MAC; - mode = add_smt ? FW_VI_MAC_SMT_AND_MPSTCAM : FW_VI_MAC_MPS_TCAM_ENTRY; + mode = smt_idx ? FW_VI_MAC_SMT_AND_MPSTCAM : FW_VI_MAC_MPS_TCAM_ENTRY; memset(&c, 0, sizeof(c)); c.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) | @@ -8006,6 +8013,23 @@ int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid, ret = FW_VI_MAC_CMD_IDX_G(be16_to_cpu(p->valid_to_idx)); if (ret >= max_mac_addr) ret = -ENOMEM; + if (smt_idx) { + if (adap->params.viid_smt_extn_support) { + *smt_idx = FW_VI_MAC_CMD_SMTID_G + (be32_to_cpu(c.op_to_viid)); + } else { + /* In T4/T5, SMT contains 256 SMAC entries + * organized in 128 rows of 2 entries each. + * In T6, SMT contains 256 SMAC entries in + * 256 rows. + */ + if (CHELSIO_CHIP_VERSION(adap->params.chip) <= + CHELSIO_T5) + *smt_idx = (viid & FW_VIID_VIN_M) << 1; + else + *smt_idx = (viid & FW_VIID_VIN_M); + } + } } return ret; } @@ -9374,6 +9398,7 @@ int t4_init_portinfo(struct port_info *pi, int mbox, enum fw_port_type port_type; int mdio_addr; fw_port_cap32_t pcaps, acaps; + u8 vivld = 0, vin = 0; int ret; /* If we haven't yet determined whether we're talking to Firmware @@ -9428,7 +9453,8 @@ int t4_init_portinfo(struct port_info *pi, int mbox, acaps = be32_to_cpu(cmd.u.info32.acaps32); } - ret = t4_alloc_vi(pi->adapter, mbox, port, pf, vf, 1, mac, &rss_size); + ret = t4_alloc_vi(pi->adapter, mbox, port, pf, vf, 1, mac, &rss_size, + &vivld, &vin); if (ret < 0) return ret; @@ -9437,6 +9463,18 @@ int t4_init_portinfo(struct port_info *pi, int mbox, pi->lport = port; pi->rss_size = rss_size; + /* If fw supports returning the VIN as part of FW_VI_CMD, + * save the returned values. + */ + if (adapter->params.viid_smt_extn_support) { + pi->vivld = vivld; + pi->vin = vin; + } else { + /* Retrieve the values from VIID */ + pi->vivld = FW_VIID_VIVLD_G(pi->viid); + pi->vin = FW_VIID_VIN_G(pi->viid); + } + pi->port_type = port_type; pi->mdio_addr = mdio_addr; pi->mod_type = FW_PORT_MOD_TYPE_NA; diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h index 57584ab..1d9b3e1 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h @@ -1253,6 +1253,7 @@ enum fw_params_param_dev { FW_PARAMS_PARAM_DEV_HMA_SIZE = 0x20, FW_PARAMS_PARAM_DEV_RDMA_WRITE_WITH_IMM = 0x21, FW_PARAMS_PARAM_DEV_RI_WRITE_CMPL_WR = 0x24, + FW_PARAMS_PARAM_DEV_OPAQUE_VIID_SMT_EXTN = 0x27, }; /* @@ -2109,6 +2110,19 @@ struct fw_vi_cmd { #define FW_VI_CMD_FREE_V(x) ((x) << FW_VI_CMD_FREE_S) #define FW_VI_CMD_FREE_F FW_VI_CMD_FREE_V(1U) +#define FW_VI_CMD_VFVLD_S 24 +#define FW_VI_CMD_VFVLD_M 0x1 +#define FW_VI_CMD_VFVLD_V(x) ((x) << FW_VI_CMD_VFVLD_S) +#define FW_VI_CMD_VFVLD_G(x) \ + (((x) >> FW_VI_CMD_VFVLD_S) & FW_VI_CMD_VFVLD_M) +#define FW_VI_CMD_VFVLD_F FW_VI_CMD_VFVLD_V(1U) + +#define FW_VI_CMD_VIN_S 16 +#define FW_VI_CMD_VIN_M 0xff +#define FW_VI_CMD_VIN_V(x) ((x) << FW_VI_CMD_VIN_S) +#define FW_VI_CMD_VIN_G(x) \ + (((x) >> FW_VI_CMD_VIN_S) & FW_VI_CMD_VIN_M) + #define FW_VI_CMD_VIID_S 0 #define FW_VI_CMD_VIID_M 0xfff #define FW_VI_CMD_VIID_V(x) ((x) << FW_VI_CMD_VIID_S) @@ -2182,6 +2196,12 @@ struct fw_vi_mac_cmd { } u; }; +#define FW_VI_MAC_CMD_SMTID_S 12 +#define FW_VI_MAC_CMD_SMTID_M 0xff +#define FW_VI_MAC_CMD_SMTID_V(x) ((x) << FW_VI_MAC_CMD_SMTID_S) +#define FW_VI_MAC_CMD_SMTID_G(x) \ + (((x) >> FW_VI_MAC_CMD_SMTID_S) & FW_VI_MAC_CMD_SMTID_M) + #define FW_VI_MAC_CMD_VIID_S 0 #define FW_VI_MAC_CMD_VIID_V(x) ((x) << FW_VI_MAC_CMD_VIID_S) diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index 064ef57..907dd87 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -1767,8 +1767,7 @@ static int init_act_open(struct cxgbi_sock *csk) csk->mtu = dst_mtu(csk->dst); cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); csk->tx_chan = cxgb4_port_chan(ndev); - csk->smac_idx = cxgb4_tp_smt_idx(lldi->adapter_type, - cxgb4_port_viid(ndev)); + csk->smac_idx = ((struct port_info *)netdev_priv(ndev))->smt_idx; step = lldi->ntxq / lldi->nchan; csk->txq_idx = cxgb4_port_idx(ndev) * step; step = lldi->nrxq / lldi->nchan; diff --git a/drivers/target/iscsi/cxgbit/cxgbit_cm.c b/drivers/target/iscsi/cxgbit/cxgbit_cm.c index 71888b9..0376d73 100644 --- a/drivers/target/iscsi/cxgbit/cxgbit_cm.c +++ b/drivers/target/iscsi/cxgbit/cxgbit_cm.c @@ -932,8 +932,8 @@ cxgbit_offload_init(struct cxgbit_sock *csk, int iptype, __u8 *peer_ip, goto out; csk->mtu = ndev->mtu; csk->tx_chan = cxgb4_port_chan(ndev); - csk->smac_idx = cxgb4_tp_smt_idx(cdev->lldi.adapter_type, - cxgb4_port_viid(ndev)); + csk->smac_idx = + ((struct port_info *)netdev_priv(ndev))->smt_idx; step = cdev->lldi.ntxq / cdev->lldi.nchan; csk->txq_idx = cxgb4_port_idx(ndev) * step; @@ -968,8 +968,8 @@ cxgbit_offload_init(struct cxgbit_sock *csk, int iptype, __u8 *peer_ip, port_id = cxgb4_port_idx(ndev); csk->mtu = dst_mtu(dst); csk->tx_chan = cxgb4_port_chan(ndev); - csk->smac_idx = cxgb4_tp_smt_idx(cdev->lldi.adapter_type, - cxgb4_port_viid(ndev)); + csk->smac_idx = + ((struct port_info *)netdev_priv(ndev))->smt_idx; step = cdev->lldi.ntxq / cdev->lldi.nports; csk->txq_idx = (port_id * step) +