From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f196.google.com (mail-wr0-f196.google.com [209.85.128.196]) by dpdk.org (Postfix) with ESMTP id 893EC1B7CB for ; Thu, 8 Feb 2018 17:37:20 +0100 (CET) Received: by mail-wr0-f196.google.com with SMTP id b52so5359304wrd.10 for ; Thu, 08 Feb 2018 08:37:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=jGYEJmGMGZM8Qa4df+YI4mvQVf/1ALo7BxP7w3gywbc=; b=fEish5tdb7YdpbJmKHGLLwZyNbiUZYt2Gk+xizE0OAQUy39FQmMBWe+YPr65ttmh45 6UZM1tKtaTUiwKUlcMbK2RiuIq9tiEu71BgkVd3KhNLUoaLWEjkeu2HWDGW0RdtsWSsA Wl37G5H7LoAsLebA0JSpxkdLZwhR2a/0eXp47bVmHcsg30YWyTn7YK2VzVEKDPVuMsd5 9xhbXFt5CeZ5uf5Nw2+Ss0RZ8iB77wBJ+sdiuZ13iScy0FbBLmG0JkAG2DrI0Nm1VxKX uVep7v7Bo/Fpu9D90zjRsy5cUKAUjtsZD58m2vBK96netNedqsK9N90iFwK6Z9Tdudcu aOsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=jGYEJmGMGZM8Qa4df+YI4mvQVf/1ALo7BxP7w3gywbc=; b=V0GQFtJj4FEzmcd+ug5uQGfLpXwkfbPGm548RzPAhT+LgMApE4c7bffozNhD+cyetM AOXAsK2ZBWeMGDgXHfVkuU7jOCFwOdKzEuzZ9q8KXD71Aol1h8iXTavVYfjnm1lVziXS lhRDDLHrVmL6XIcsKpqgukoTBzIGLpbFXX3BbDcxrNyffg0Bnf+9fGgd8CHP1a11fw8Z SZnq8hrnX/I4NmeaIBLTEkpcS8xy7LFJVQhW8dAITQ7XnGs/8FK04Wj48BfAkF2H4Oi7 nh2BFBEe0cPowj3L1HkU2vsF0TMxI7580iPTS7Bh/MoccLeJnIRsE3uuevWW+z5thryC 54HQ== X-Gm-Message-State: APf1xPBJzR+yCmCMraSXRoma/a8xDGAIrBAZK1tr3J6ssidbg92SVBHK xsCVG/78+Y6HRSbxleu3TypLvA== X-Google-Smtp-Source: AH8x224TbDpX5s0sWWndl37kavU3eEGqy7K3pL66fBHncVysKEstzbKDTZJj/N4rOnwS1xLeVHovfw== X-Received: by 10.223.187.72 with SMTP id x8mr1442252wrg.179.1518107839931; Thu, 08 Feb 2018 08:37:19 -0800 (PST) Received: from 6wind.com (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id k125sm340250wmd.48.2018.02.08.08.37.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 08 Feb 2018 08:37:19 -0800 (PST) Date: Thu, 8 Feb 2018 17:37:06 +0100 From: Adrien Mazarguil To: Shahaf Shuler Cc: Nelio Laranjeiro , Yongseok Koh , dev@dpdk.org Message-ID: <20180208163538.22407-1-adrien.mazarguil@6wind.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email 2.11.0 Subject: [dpdk-dev] [PATCH v1] net/mlx: control netdevices through ioctl only 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: , X-List-Received-Date: Thu, 08 Feb 2018 16:37:20 -0000 Several control operations implemented by these PMDs affect netdevices through sysfs, itself subject to file system permission checks enforced by the kernel, which limits their use for most purposes to applications running with root privileges. Since performing the same operations through ioctl() requires fewer capabilities (only CAP_NET_ADMIN) and given the remaining operations are already implemented this way, this patch standardizes on ioctl() and gets rid of redundant code. Signed-off-by: Adrien Mazarguil --- drivers/net/mlx4/mlx4_ethdev.c | 192 ++------------------------- drivers/net/mlx5/mlx5.h | 2 - drivers/net/mlx5/mlx5_ethdev.c | 255 ++++-------------------------------- drivers/net/mlx5/mlx5_stats.c | 28 +++- 4 files changed, 63 insertions(+), 414 deletions(-) diff --git a/drivers/net/mlx4/mlx4_ethdev.c b/drivers/net/mlx4/mlx4_ethdev.c index 3bc692731..fbeef16c8 100644 --- a/drivers/net/mlx4/mlx4_ethdev.c +++ b/drivers/net/mlx4/mlx4_ethdev.c @@ -132,167 +132,6 @@ mlx4_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) } /** - * Read from sysfs entry. - * - * @param[in] priv - * Pointer to private structure. - * @param[in] entry - * Entry name relative to sysfs path. - * @param[out] buf - * Data output buffer. - * @param size - * Buffer size. - * - * @return - * Number of bytes read on success, negative errno value otherwise and - * rte_errno is set. - */ -static int -mlx4_sysfs_read(const struct priv *priv, const char *entry, - char *buf, size_t size) -{ - char ifname[IF_NAMESIZE]; - FILE *file; - int ret; - - ret = mlx4_get_ifname(priv, &ifname); - if (ret) - return ret; - - MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path, - ifname, entry); - - file = fopen(path, "rb"); - if (file == NULL) { - rte_errno = errno; - return -rte_errno; - } - ret = fread(buf, 1, size, file); - if ((size_t)ret < size && ferror(file)) { - rte_errno = EIO; - ret = -rte_errno; - } else { - ret = size; - } - fclose(file); - return ret; -} - -/** - * Write to sysfs entry. - * - * @param[in] priv - * Pointer to private structure. - * @param[in] entry - * Entry name relative to sysfs path. - * @param[in] buf - * Data buffer. - * @param size - * Buffer size. - * - * @return - * Number of bytes written on success, negative errno value otherwise and - * rte_errno is set. - */ -static int -mlx4_sysfs_write(const struct priv *priv, const char *entry, - char *buf, size_t size) -{ - char ifname[IF_NAMESIZE]; - FILE *file; - int ret; - - ret = mlx4_get_ifname(priv, &ifname); - if (ret) - return ret; - - MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path, - ifname, entry); - - file = fopen(path, "wb"); - if (file == NULL) { - rte_errno = errno; - return -rte_errno; - } - ret = fwrite(buf, 1, size, file); - if ((size_t)ret < size || ferror(file)) { - rte_errno = EIO; - ret = -rte_errno; - } else { - ret = size; - } - fclose(file); - return ret; -} - -/** - * Get unsigned long sysfs property. - * - * @param priv - * Pointer to private structure. - * @param[in] name - * Entry name relative to sysfs path. - * @param[out] value - * Value output buffer. - * - * @return - * 0 on success, negative errno value otherwise and rte_errno is set. - */ -static int -mlx4_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value) -{ - int ret; - unsigned long value_ret; - char value_str[32]; - - ret = mlx4_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1)); - if (ret < 0) { - DEBUG("cannot read %s value from sysfs: %s", - name, strerror(rte_errno)); - return ret; - } - value_str[ret] = '\0'; - errno = 0; - value_ret = strtoul(value_str, NULL, 0); - if (errno) { - rte_errno = errno; - DEBUG("invalid %s value `%s': %s", name, value_str, - strerror(rte_errno)); - return -rte_errno; - } - *value = value_ret; - return 0; -} - -/** - * Set unsigned long sysfs property. - * - * @param priv - * Pointer to private structure. - * @param[in] name - * Entry name relative to sysfs path. - * @param value - * Value to set. - * - * @return - * 0 on success, negative errno value otherwise and rte_errno is set. - */ -static int -mlx4_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value) -{ - int ret; - MKSTR(value_str, "%lu", value); - - ret = mlx4_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1)); - if (ret < 0) { - DEBUG("cannot write %s `%s' (%lu) to sysfs: %s", - name, value_str, value, strerror(rte_errno)); - return ret; - } - return 0; -} - -/** * Perform ifreq ioctl() on associated Ethernet device. * * @param[in] priv @@ -361,12 +200,12 @@ mlx4_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN]) int mlx4_mtu_get(struct priv *priv, uint16_t *mtu) { - unsigned long ulong_mtu = 0; - int ret = mlx4_get_sysfs_ulong(priv, "mtu", &ulong_mtu); + struct ifreq request; + int ret = mlx4_ifreq(priv, SIOCGIFMTU, &request); if (ret) return ret; - *mtu = ulong_mtu; + *mtu = request.ifr_mtu; return 0; } @@ -385,20 +224,13 @@ int mlx4_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) { struct priv *priv = dev->data->dev_private; - uint16_t new_mtu; - int ret = mlx4_set_sysfs_ulong(priv, "mtu", mtu); + struct ifreq request = { .ifr_mtu = mtu, }; + int ret = mlx4_ifreq(priv, SIOCSIFMTU, &request); if (ret) return ret; - ret = mlx4_mtu_get(priv, &new_mtu); - if (ret) - return ret; - if (new_mtu == mtu) { - priv->mtu = mtu; - return 0; - } - rte_errno = EINVAL; - return -rte_errno; + priv->mtu = mtu; + return 0; } /** @@ -417,14 +249,14 @@ mlx4_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) static int mlx4_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) { - unsigned long tmp = 0; - int ret = mlx4_get_sysfs_ulong(priv, "flags", &tmp); + struct ifreq request; + int ret = mlx4_ifreq(priv, SIOCGIFFLAGS, &request); if (ret) return ret; - tmp &= keep; - tmp |= (flags & (~keep)); - return mlx4_set_sysfs_ulong(priv, "flags", tmp); + request.ifr_flags &= keep; + request.ifr_flags |= flags & ~keep; + return mlx4_ifreq(priv, SIOCSIFFLAGS, &request); } /** diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 965c19f21..da44faaf4 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -209,8 +209,6 @@ struct priv *mlx5_get_priv(struct rte_eth_dev *dev); int mlx5_is_secondary(void); int priv_get_ifname(const struct priv *, char (*)[IF_NAMESIZE]); int priv_ifreq(const struct priv *, int req, struct ifreq *); -int priv_is_ib_cntr(const char *); -int priv_get_cntr_sysfs(struct priv *, const char *, uint64_t *); int priv_get_num_vfs(struct priv *, uint16_t *); int priv_get_mtu(struct priv *, uint16_t *); int priv_set_flags(struct priv *, unsigned int, unsigned int); diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c index 666507691..b73cb53df 100644 --- a/drivers/net/mlx5/mlx5_ethdev.c +++ b/drivers/net/mlx5/mlx5_ethdev.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -173,181 +174,6 @@ priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) } /** - * Check if the counter is located on ib counters file. - * - * @param[in] cntr - * Counter name. - * - * @return - * 1 if counter is located on ib counters file , 0 otherwise. - */ -int -priv_is_ib_cntr(const char *cntr) -{ - if (!strcmp(cntr, "out_of_buffer")) - return 1; - return 0; -} - -/** - * Read from sysfs entry. - * - * @param[in] priv - * Pointer to private structure. - * @param[in] entry - * Entry name relative to sysfs path. - * @param[out] buf - * Data output buffer. - * @param size - * Buffer size. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -static int -priv_sysfs_read(const struct priv *priv, const char *entry, - char *buf, size_t size) -{ - char ifname[IF_NAMESIZE]; - FILE *file; - int ret; - int err; - - if (priv_get_ifname(priv, &ifname)) - return -1; - - if (priv_is_ib_cntr(entry)) { - MKSTR(path, "%s/ports/1/hw_counters/%s", - priv->ibdev_path, entry); - file = fopen(path, "rb"); - } else { - MKSTR(path, "%s/device/net/%s/%s", - priv->ibdev_path, ifname, entry); - file = fopen(path, "rb"); - } - if (file == NULL) - return -1; - ret = fread(buf, 1, size, file); - err = errno; - if (((size_t)ret < size) && (ferror(file))) - ret = -1; - else - ret = size; - fclose(file); - errno = err; - return ret; -} - -/** - * Write to sysfs entry. - * - * @param[in] priv - * Pointer to private structure. - * @param[in] entry - * Entry name relative to sysfs path. - * @param[in] buf - * Data buffer. - * @param size - * Buffer size. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -static int -priv_sysfs_write(const struct priv *priv, const char *entry, - char *buf, size_t size) -{ - char ifname[IF_NAMESIZE]; - FILE *file; - int ret; - int err; - - if (priv_get_ifname(priv, &ifname)) - return -1; - - MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry); - - file = fopen(path, "wb"); - if (file == NULL) - return -1; - ret = fwrite(buf, 1, size, file); - err = errno; - if (((size_t)ret < size) || (ferror(file))) - ret = -1; - else - ret = size; - fclose(file); - errno = err; - return ret; -} - -/** - * Get unsigned long sysfs property. - * - * @param priv - * Pointer to private structure. - * @param[in] name - * Entry name relative to sysfs path. - * @param[out] value - * Value output buffer. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -static int -priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value) -{ - int ret; - unsigned long value_ret; - char value_str[32]; - - ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1)); - if (ret == -1) { - DEBUG("cannot read %s value from sysfs: %s", - name, strerror(errno)); - return -1; - } - value_str[ret] = '\0'; - errno = 0; - value_ret = strtoul(value_str, NULL, 0); - if (errno) { - DEBUG("invalid %s value `%s': %s", name, value_str, - strerror(errno)); - return -1; - } - *value = value_ret; - return 0; -} - -/** - * Set unsigned long sysfs property. - * - * @param priv - * Pointer to private structure. - * @param[in] name - * Entry name relative to sysfs path. - * @param value - * Value to set. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -static int -priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value) -{ - int ret; - MKSTR(value_str, "%lu", value); - - ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1)); - if (ret == -1) { - DEBUG("cannot write %s `%s' (%lu) to sysfs: %s", - name, value_str, value, strerror(errno)); - return -1; - } - return 0; -} - -/** * Perform ifreq ioctl() on associated Ethernet device. * * @param[in] priv @@ -390,20 +216,25 @@ priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) { /* The sysfs entry name depends on the operating system. */ const char **name = (const char *[]){ - "device/sriov_numvfs", - "device/mlx5_num_vfs", + "sriov_numvfs", + "mlx5_num_vfs", NULL, }; - int ret; do { - unsigned long ulong_num_vfs; + int n; + FILE *file; + MKSTR(path, "%s/device/%s", priv->ibdev_path, *name); - ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs); - if (!ret) - *num_vfs = ulong_num_vfs; - } while (*(++name) && ret); - return ret; + file = fopen(path, "rb"); + if (!file) + continue; + n = fscanf(file, "%" SCNu16, num_vfs); + fclose(file); + if (n == 1) + return 0; + } while (*(++name)); + return -1; } /** @@ -420,35 +251,12 @@ priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) int priv_get_mtu(struct priv *priv, uint16_t *mtu) { - unsigned long ulong_mtu; + struct ifreq request; + int ret = priv_ifreq(priv, SIOCGIFMTU, &request); - if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1) - return -1; - *mtu = ulong_mtu; - return 0; -} - -/** - * Read device counter from sysfs. - * - * @param priv - * Pointer to private structure. - * @param name - * Counter name. - * @param[out] cntr - * Counter output buffer. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -int -priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr) -{ - unsigned long ulong_ctr; - - if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1) - return -1; - *cntr = ulong_ctr; + if (ret) + return ret; + *mtu = request.ifr_mtu; return 0; } @@ -466,15 +274,9 @@ priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr) static int priv_set_mtu(struct priv *priv, uint16_t mtu) { - uint16_t new_mtu; + struct ifreq request = { .ifr_mtu = mtu, }; - if (priv_set_sysfs_ulong(priv, "mtu", mtu) || - priv_get_mtu(priv, &new_mtu)) - return -1; - if (new_mtu == mtu) - return 0; - errno = EINVAL; - return -1; + return priv_ifreq(priv, SIOCSIFMTU, &request); } /** @@ -493,13 +295,14 @@ priv_set_mtu(struct priv *priv, uint16_t mtu) int priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) { - unsigned long tmp; + struct ifreq request; + int ret = priv_ifreq(priv, SIOCGIFFLAGS, &request); - if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1) - return -1; - tmp &= keep; - tmp |= (flags & (~keep)); - return priv_set_sysfs_ulong(priv, "flags", tmp); + if (ret) + return ret; + request.ifr_flags &= keep; + request.ifr_flags |= flags & ~keep; + return priv_ifreq(priv, SIOCSIFFLAGS, &request); } /** diff --git a/drivers/net/mlx5/mlx5_stats.c b/drivers/net/mlx5/mlx5_stats.c index 378472a70..eb9c65dcc 100644 --- a/drivers/net/mlx5/mlx5_stats.c +++ b/drivers/net/mlx5/mlx5_stats.c @@ -3,8 +3,11 @@ * Copyright 2015 Mellanox. */ +#include #include #include +#include +#include #include #include @@ -19,6 +22,7 @@ struct mlx5_counter_ctrl { char dpdk_name[RTE_ETH_XSTATS_NAME_SIZE]; /* Name of the counter on the device table. */ char ctr_name[RTE_ETH_XSTATS_NAME_SIZE]; + uint32_t ib:1; /**< Nonzero for IB counters. */ }; static const struct mlx5_counter_ctrl mlx5_counters_init[] = { @@ -93,6 +97,7 @@ static const struct mlx5_counter_ctrl mlx5_counters_init[] = { { .dpdk_name = "rx_out_of_buffer", .ctr_name = "out_of_buffer", + .ib = 1, }, { .dpdk_name = "tx_packets_phy", @@ -143,13 +148,24 @@ priv_read_dev_counters(struct priv *priv, uint64_t *stats) return -1; } for (i = 0; i != xstats_n; ++i) { - if (priv_is_ib_cntr(mlx5_counters_init[i].ctr_name)) - priv_get_cntr_sysfs(priv, - mlx5_counters_init[i].ctr_name, - &stats[i]); - else + if (mlx5_counters_init[i].ib) { + FILE *file; + MKSTR(path, "%s/ports/1/hw_counters/%s", + priv->ibdev_path, + mlx5_counters_init[i].ctr_name); + + file = fopen(path, "rb"); + if (file) { + int n = fscanf(file, "%" SCNu64, &stats[i]); + + fclose(file); + if (n != 1) + stats[i] = 0; + } + } else { stats[i] = (uint64_t) et_stats->data[xstats_ctrl->dev_table_idx[i]]; + } } return 0; } @@ -232,7 +248,7 @@ priv_xstats_init(struct priv *priv) } } for (j = 0; j != xstats_n; ++j) { - if (priv_is_ib_cntr(mlx5_counters_init[j].ctr_name)) + if (mlx5_counters_init[j].ib) continue; if (xstats_ctrl->dev_table_idx[j] >= dev_stats_n) { WARN("counter \"%s\" is not recognized", -- 2.11.0