From 0f5ee447f5c5bc98d1ce9010ad7d22a270b0dd7e Mon Sep 17 00:00:00 2001 From: Nithin Dabilpuram Date: Wed, 23 Jun 2021 10:16:14 +0530 Subject: [PATCH] net/cnxk: support link status update Add link status update callback to get current link status. Signed-off-by: Nithin Dabilpuram --- doc/guides/nics/cnxk.rst | 1 + doc/guides/nics/features/cnxk.ini | 2 + doc/guides/nics/features/cnxk_vec.ini | 2 + doc/guides/nics/features/cnxk_vf.ini | 2 + drivers/net/cnxk/cnxk_ethdev.c | 7 ++ drivers/net/cnxk/cnxk_ethdev.h | 8 ++ drivers/net/cnxk/cnxk_link.c | 102 ++++++++++++++++++++++++++ drivers/net/cnxk/meson.build | 1 + 8 files changed, 125 insertions(+) create mode 100644 drivers/net/cnxk/cnxk_link.c diff --git a/doc/guides/nics/cnxk.rst b/doc/guides/nics/cnxk.rst index 62fd1bbb48..4be6a1a8f0 100644 --- a/doc/guides/nics/cnxk.rst +++ b/doc/guides/nics/cnxk.rst @@ -20,6 +20,7 @@ Features of the CNXK Ethdev PMD are: - Lock-free Tx queue - Multiple queues for TX and RX - Receiver Side Scaling (RSS) +- Link state information Prerequisites ------------- diff --git a/doc/guides/nics/features/cnxk.ini b/doc/guides/nics/features/cnxk.ini index 96dba2a243..affbbd95d1 100644 --- a/doc/guides/nics/features/cnxk.ini +++ b/doc/guides/nics/features/cnxk.ini @@ -8,6 +8,8 @@ Speed capabilities = Y Lock-free Tx queue = Y SR-IOV = Y Multiprocess aware = Y +Link status = Y +Link status event = Y RSS hash = Y Inner RSS = Y Linux = Y diff --git a/doc/guides/nics/features/cnxk_vec.ini b/doc/guides/nics/features/cnxk_vec.ini index 616991c8dd..836cc9f822 100644 --- a/doc/guides/nics/features/cnxk_vec.ini +++ b/doc/guides/nics/features/cnxk_vec.ini @@ -8,6 +8,8 @@ Speed capabilities = Y Lock-free Tx queue = Y SR-IOV = Y Multiprocess aware = Y +Link status = Y +Link status event = Y RSS hash = Y Inner RSS = Y Linux = Y diff --git a/doc/guides/nics/features/cnxk_vf.ini b/doc/guides/nics/features/cnxk_vf.ini index a0bd2f102f..29bb24f8c9 100644 --- a/doc/guides/nics/features/cnxk_vf.ini +++ b/doc/guides/nics/features/cnxk_vf.ini @@ -7,6 +7,8 @@ Speed capabilities = Y Lock-free Tx queue = Y Multiprocess aware = Y +Link status = Y +Link status event = Y RSS hash = Y Inner RSS = Y Linux = Y diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c index 251d6eb167..ea49809d0f 100644 --- a/drivers/net/cnxk/cnxk_ethdev.c +++ b/drivers/net/cnxk/cnxk_ethdev.c @@ -601,6 +601,7 @@ fail_configure: /* CNXK platform independent eth dev ops */ struct eth_dev_ops cnxk_eth_dev_ops = { .dev_infos_get = cnxk_nix_info_get, + .link_update = cnxk_nix_link_update, }; static int @@ -635,6 +636,9 @@ cnxk_eth_dev_init(struct rte_eth_dev *eth_dev) goto error; } + /* Register up msg callbacks */ + roc_nix_mac_link_cb_register(nix, cnxk_eth_dev_link_status_cb); + dev->eth_dev = eth_dev; dev->configured = 0; @@ -723,6 +727,9 @@ cnxk_eth_dev_uninit(struct rte_eth_dev *eth_dev, bool mbox_close) roc_nix_npc_rx_ena_dis(nix, false); + /* Disable link status events */ + roc_nix_mac_link_event_start_stop(nix, false); + /* Free up SQs */ for (i = 0; i < eth_dev->data->nb_tx_queues; i++) { dev_ops->tx_queue_release(eth_dev->data->tx_queues[i]); diff --git a/drivers/net/cnxk/cnxk_ethdev.h b/drivers/net/cnxk/cnxk_ethdev.h index 291f5f967c..daa87af041 100644 --- a/drivers/net/cnxk/cnxk_ethdev.h +++ b/drivers/net/cnxk/cnxk_ethdev.h @@ -15,6 +15,9 @@ #define CNXK_ETH_DEV_PMD_VERSION "1.0" +/* Used for struct cnxk_eth_dev::flags */ +#define CNXK_LINK_CFG_IN_PROGRESS_F BIT_ULL(0) + /* VLAN tag inserted by NIX_TX_VTAG_ACTION. * In Tx space is always reserved for this in FRS. */ @@ -196,6 +199,11 @@ int cnxk_nix_configure(struct rte_eth_dev *eth_dev); uint32_t cnxk_rss_ethdev_to_nix(struct cnxk_eth_dev *dev, uint64_t ethdev_rss, uint8_t rss_level); +/* Link */ +void cnxk_eth_dev_link_status_cb(struct roc_nix *nix, + struct roc_nix_link_info *link); +int cnxk_nix_link_update(struct rte_eth_dev *eth_dev, int wait_to_complete); + /* Devargs */ int cnxk_ethdev_parse_devargs(struct rte_devargs *devargs, struct cnxk_eth_dev *dev); diff --git a/drivers/net/cnxk/cnxk_link.c b/drivers/net/cnxk/cnxk_link.c new file mode 100644 index 0000000000..b0273e7b6d --- /dev/null +++ b/drivers/net/cnxk/cnxk_link.c @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(C) 2021 Marvell. + */ + +#include "cnxk_ethdev.h" + +static inline int +nix_wait_for_link_cfg(struct cnxk_eth_dev *dev) +{ + uint16_t wait = 1000; + + do { + rte_atomic_thread_fence(__ATOMIC_ACQUIRE); + if (!(dev->flags & CNXK_LINK_CFG_IN_PROGRESS_F)) + break; + wait--; + rte_delay_ms(1); + } while (wait); + + return wait ? 0 : -1; +} + +static void +nix_link_status_print(struct rte_eth_dev *eth_dev, struct rte_eth_link *link) +{ + if (link && link->link_status) + plt_info("Port %d: Link Up - speed %u Mbps - %s", + (int)(eth_dev->data->port_id), + (uint32_t)link->link_speed, + link->link_duplex == ETH_LINK_FULL_DUPLEX + ? "full-duplex" + : "half-duplex"); + else + plt_info("Port %d: Link Down", (int)(eth_dev->data->port_id)); +} + +void +cnxk_eth_dev_link_status_cb(struct roc_nix *nix, struct roc_nix_link_info *link) +{ + struct cnxk_eth_dev *dev = (struct cnxk_eth_dev *)nix; + struct rte_eth_link eth_link; + struct rte_eth_dev *eth_dev; + + if (!link || !nix) + return; + + eth_dev = dev->eth_dev; + if (!eth_dev || !eth_dev->data->dev_conf.intr_conf.lsc) + return; + + if (nix_wait_for_link_cfg(dev)) { + plt_err("Timeout waiting for link_cfg to complete"); + return; + } + + eth_link.link_status = link->status; + eth_link.link_speed = link->speed; + eth_link.link_autoneg = ETH_LINK_AUTONEG; + eth_link.link_duplex = link->full_duplex; + + /* Print link info */ + nix_link_status_print(eth_dev, ð_link); + + /* Update link info */ + rte_eth_linkstatus_set(eth_dev, ð_link); + + /* Set the flag and execute application callbacks */ + rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL); +} + +int +cnxk_nix_link_update(struct rte_eth_dev *eth_dev, int wait_to_complete) +{ + struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev); + struct roc_nix_link_info info; + struct rte_eth_link link; + int rc; + + RTE_SET_USED(wait_to_complete); + memset(&link, 0, sizeof(struct rte_eth_link)); + + if (roc_nix_is_sdp(&dev->nix)) + return 0; + + if (roc_nix_is_lbk(&dev->nix)) { + link.link_status = ETH_LINK_UP; + link.link_speed = ETH_SPEED_NUM_100G; + link.link_autoneg = ETH_LINK_FIXED; + link.link_duplex = ETH_LINK_FULL_DUPLEX; + } else { + rc = roc_nix_mac_link_info_get(&dev->nix, &info); + if (rc) + return rc; + link.link_status = info.status; + link.link_speed = info.speed; + link.link_autoneg = ETH_LINK_AUTONEG; + if (info.full_duplex) + link.link_duplex = info.full_duplex; + } + + return rte_eth_linkstatus_set(eth_dev, &link); +} diff --git a/drivers/net/cnxk/meson.build b/drivers/net/cnxk/meson.build index 7df228eb31..31d211c1bc 100644 --- a/drivers/net/cnxk/meson.build +++ b/drivers/net/cnxk/meson.build @@ -12,6 +12,7 @@ sources = files( 'cnxk_ethdev.c', 'cnxk_ethdev_devargs.c', 'cnxk_ethdev_ops.c', + 'cnxk_link.c', ) # CN9K -- 2.20.1