From patchwork Mon Feb 25 11:01:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Slava Ovsiienko X-Patchwork-Id: 50486 X-Patchwork-Delegate: shahafs@mellanox.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A37E22B9C; Mon, 25 Feb 2019 12:01:40 +0100 (CET) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 53169292D for ; Mon, 25 Feb 2019 12:01:39 +0100 (CET) Received: from Internal Mail-Server by MTLPINE1 (envelope-from viacheslavo@mellanox.com) with ESMTPS (AES256-SHA encrypted); 25 Feb 2019 13:01:37 +0200 Received: from pegasus12.mtr.labs.mlnx. (pegasus12.mtr.labs.mlnx [10.210.17.40]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x1PB1aBx018356; Mon, 25 Feb 2019 13:01:37 +0200 From: Viacheslav Ovsiienko To: shahafs@mellanox.com Cc: dev@dpdk.org Date: Mon, 25 Feb 2019 11:01:29 +0000 Message-Id: <1551092489-12247-1-git-send-email-viacheslavo@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1550738519-4251-1-git-send-email-viacheslavo@mellanox.com> References: <1550738519-4251-1-git-send-email-viacheslavo@mellanox.com> Subject: [dpdk-dev] [PATCH v2 1/1] net/mlx5: add representor recognition on kernels 5.x X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The master device and VF representors were distinguished by presence of port name, master device did not have one. The new Linux kernels starting from 5.0 provide the port name for master device and the implemented representor recognizing method does not work. The new recognizing method is based on quiering the VF number, created on the base of the device. The IFLA_NUM_VF attribute is returned by kernel if IFLA_EXT_MASK attribute is specified in the Netlink request message. Also the presence of device symlink in device sysfs folder is added to distinguish representors with sysfs based method. Signed-off-by: Viacheslav Ovsiienko --- v2: fopen is replaced with opendir to detect whether directory exists v1: http://patches.dpdk.org/patch/50411/ --- drivers/net/mlx5/Makefile | 10 ++++++++++ drivers/net/mlx5/meson.build | 4 ++++ drivers/net/mlx5/mlx5_ethdev.c | 13 +++++++++++-- drivers/net/mlx5/mlx5_nl.c | 25 ++++++++++++++++++++++--- 4 files changed, 47 insertions(+), 5 deletions(-) diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile index 9a7da18..c326494 100644 --- a/drivers/net/mlx5/Makefile +++ b/drivers/net/mlx5/Makefile @@ -226,6 +226,16 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh enum RDMA_NLDEV_ATTR_NDEV_INDEX \ $(AUTOCONF_OUTPUT) $Q sh -- '$<' '$@' \ + HAVE_IFLA_NUM_VF \ + linux/if_link.h \ + enum IFLA_NUM_VF \ + $(AUTOCONF_OUTPUT) + $Q sh -- '$<' '$@' \ + HAVE_IFLA_EXT_MASK \ + linux/if_link.h \ + enum IFLA_EXT_MASK \ + $(AUTOCONF_OUTPUT) + $Q sh -- '$<' '$@' \ HAVE_IFLA_PHYS_SWITCH_ID \ linux/if_link.h \ enum IFLA_PHYS_SWITCH_ID \ diff --git a/drivers/net/mlx5/meson.build b/drivers/net/mlx5/meson.build index 4540c45..0bb2f3a 100644 --- a/drivers/net/mlx5/meson.build +++ b/drivers/net/mlx5/meson.build @@ -133,6 +133,10 @@ if build 'ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT' ], [ 'HAVE_ETHTOOL_LINK_MODE_100G', 'linux/ethtool.h', 'ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT' ], + [ 'HAVE_IFLA_NUM_VF', 'linux/if_link.h', + 'IFLA_NUM_VF' ], + [ 'HAVE_IFLA_EXT_MASK', 'linux/if_link.h', + 'IFLA_EXT_MASK' ], [ 'HAVE_IFLA_PHYS_SWITCH_ID', 'linux/if_link.h', 'IFLA_PHYS_SWITCH_ID' ], [ 'HAVE_IFLA_PHYS_PORT_NAME', 'linux/if_link.h', diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c index 8158b4a..c30fcb0 100644 --- a/drivers/net/mlx5/mlx5_ethdev.c +++ b/drivers/net/mlx5/mlx5_ethdev.c @@ -1354,9 +1354,11 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) { char ifname[IF_NAMESIZE]; FILE *file; + DIR *dir; struct mlx5_switch_info data = { .master = 0, }; bool port_name_set = false; bool port_switch_id_set = false; + bool device_dir = false; char c; if (!if_indextoname(ifindex, ifname)) { @@ -1368,6 +1370,8 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) ifname); MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id", ifname); + MKSTR(pci_device, "/sys/class/net/%s/device", + ifname); file = fopen(phys_port_name, "rb"); if (file != NULL) { @@ -1385,8 +1389,13 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 && c == '\n'; fclose(file); - data.master = port_switch_id_set && !port_name_set; - data.representor = port_switch_id_set && port_name_set; + dir = opendir(pci_device); + if (dir != NULL) { + closedir(dir); + device_dir = true; + } + data.master = port_switch_id_set && (!port_name_set || device_dir); + data.representor = port_switch_id_set && port_name_set && !device_dir; *info = data; return 0; } diff --git a/drivers/net/mlx5/mlx5_nl.c b/drivers/net/mlx5/mlx5_nl.c index d61826a..694edf1 100644 --- a/drivers/net/mlx5/mlx5_nl.c +++ b/drivers/net/mlx5/mlx5_nl.c @@ -65,6 +65,12 @@ #endif /* These are normally found in linux/if_link.h. */ +#ifndef HAVE_IFLA_NUM_VF +#define IFLA_NUM_VF 21 +#endif +#ifndef HAVE_IFLA_EXT_MASK +#define IFLA_EXT_MASK 29 +#endif #ifndef HAVE_IFLA_PHYS_SWITCH_ID #define IFLA_PHYS_SWITCH_ID 36 #endif @@ -836,6 +842,7 @@ struct mlx5_nl_ifindex_data { size_t off = NLMSG_LENGTH(sizeof(struct ifinfomsg)); bool port_name_set = false; bool switch_id_set = false; + bool num_vf_set = false; if (nh->nlmsg_type != RTM_NEWLINK) goto error; @@ -848,6 +855,9 @@ struct mlx5_nl_ifindex_data { if (ra->rta_len > nh->nlmsg_len - off) goto error; switch (ra->rta_type) { + case IFLA_NUM_VF: + num_vf_set = true; + break; case IFLA_PHYS_PORT_NAME: errno = 0; info.port_name = strtol(payload, &end, 0); @@ -867,8 +877,8 @@ struct mlx5_nl_ifindex_data { } off += RTA_ALIGN(ra->rta_len); } - info.master = switch_id_set && !port_name_set; - info.representor = switch_id_set && port_name_set; + info.master = switch_id_set && (!port_name_set || num_vf_set); + info.representor = switch_id_set && port_name_set && !num_vf_set; memcpy(arg, &info, sizeof(info)); return 0; error: @@ -896,9 +906,13 @@ struct mlx5_nl_ifindex_data { struct { struct nlmsghdr nh; struct ifinfomsg info; + struct rtattr rta; + uint32_t extmask; } req = { .nh = { - .nlmsg_len = NLMSG_LENGTH(sizeof(req.info)), + .nlmsg_len = NLMSG_LENGTH + (sizeof(req.info) + + RTA_LENGTH(sizeof(uint32_t))), .nlmsg_type = RTM_GETLINK, .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK, }, @@ -906,6 +920,11 @@ struct mlx5_nl_ifindex_data { .ifi_family = AF_UNSPEC, .ifi_index = ifindex, }, + .rta = { + .rta_type = IFLA_EXT_MASK, + .rta_len = RTA_LENGTH(sizeof(int32_t)), + }, + .extmask = RTE_LE32(1), }; int ret;