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Patch "net: move somaxconn init from sysctl code" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: move somaxconn init from sysctl code to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-move-somaxconn-init-from-sysctl-code.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Roman Kapl <roman.kapl(a)sysgo.com> Date: Wed, 24 May 2017 10:22:22 +0200 Subject: net: move somaxconn init from sysctl code From: Roman Kapl <roman.kapl(a)sysgo.com> [ Upstream commit 7c3f1875c66fbc19762760097cabc91849ea0bbb ] The default value for somaxconn is set in sysctl_core_net_init(), but this function is not called when kernel is configured without CONFIG_SYSCTL. This results in the kernel not being able to accept TCP connections, because the backlog has zero size. Usually, the user ends up with: "TCP: request_sock_TCP: Possible SYN flooding on port 7. Dropping request. Check SNMP counters." If SYN cookies are not enabled the connection is rejected. Before ef547f2ac16 (tcp: remove max_qlen_log), the effects were less severe, because the backlog was always at least eight slots long. Signed-off-by: Roman Kapl <roman.kapl(a)sysgo.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/net_namespace.c | 19 +++++++++++++++++++ net/core/sysctl_net_core.c | 2 -- 2 files changed, 19 insertions(+), 2 deletions(-) --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -312,6 +312,25 @@ out_undo: goto out; } +static int __net_init net_defaults_init_net(struct net *net) +{ + net->core.sysctl_somaxconn = SOMAXCONN; + return 0; +} + +static struct pernet_operations net_defaults_ops = { + .init = net_defaults_init_net, +}; + +static __init int net_defaults_init(void) +{ + if (register_pernet_subsys(&net_defaults_ops)) + panic("Cannot initialize net default settings"); + + return 0; +} + +core_initcall(net_defaults_init); #ifdef CONFIG_NET_NS static struct ucounts *inc_net_namespaces(struct user_namespace *ns) --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -438,8 +438,6 @@ static __net_init int sysctl_core_net_in { struct ctl_table *tbl; - net->core.sysctl_somaxconn = SOMAXCONN; - tbl = netns_core_table; if (!net_eq(net, &init_net)) { tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL); Patches currently in stable-queue which might be from roman.kapl(a)sysgo.com are queue-4.9/net-move-somaxconn-init-from-sysctl-code.patch

7 years, 8 months

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Patch "net/mlx5: Tolerate irq_set_affinity_hint() failures" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx5: Tolerate irq_set_affinity_hint() failures to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx5-tolerate-irq_set_affinity_hint-failures.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Tariq Toukan <tariqt(a)mellanox.com> Date: Thu, 18 May 2017 13:34:43 +0300 Subject: net/mlx5: Tolerate irq_set_affinity_hint() failures From: Tariq Toukan <tariqt(a)mellanox.com> [ Upstream commit b665d98edc9ab295169be2fc5bb4e89a46de0a1a ] Add tolerance to failures of irq_set_affinity_hint(). Its role is to give hints that optimizes performance, and should not block the driver load. In non-SMP systems, functionality is not available as there is a single core, and all these calls definitely fail. Hence, do not call the function and avoid the warning prints. Fixes: db058a186f98 ("net/mlx5_core: Set irq affinity hints") Signed-off-by: Tariq Toukan <tariqt(a)mellanox.com> Cc: kernel-team(a)fb.com Signed-off-by: Saeed Mahameed <saeedm(a)mellanox.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx5/core/main.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -548,7 +548,6 @@ static int mlx5_irq_set_affinity_hint(st struct mlx5_priv *priv = &mdev->priv; struct msix_entry *msix = priv->msix_arr; int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector; - int err; if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) { mlx5_core_warn(mdev, "zalloc_cpumask_var failed"); @@ -558,18 +557,12 @@ static int mlx5_irq_set_affinity_hint(st cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node), priv->irq_info[i].mask); - err = irq_set_affinity_hint(irq, priv->irq_info[i].mask); - if (err) { - mlx5_core_warn(mdev, "irq_set_affinity_hint failed,irq 0x%.4x", - irq); - goto err_clear_mask; - } +#ifdef CONFIG_SMP + if (irq_set_affinity_hint(irq, priv->irq_info[i].mask)) + mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", irq); +#endif return 0; - -err_clear_mask: - free_cpumask_var(priv->irq_info[i].mask); - return err; } static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i) Patches currently in stable-queue which might be from tariqt(a)mellanox.com are queue-4.9/net-mlx4_en-change-default-qos-settings.patch queue-4.9/net-mlx4_en-avoid-adding-steering-rules-with-invalid-ring.patch queue-4.9/net-mlx4-fix-the-check-in-attaching-steering-rules.patch queue-4.9/net-mlx5-tolerate-irq_set_affinity_hint-failures.patch queue-4.9/net-mlx4-check-if-granular-qos-per-vf-has-been-enabled-before-updating-qp-qos_vport.patch

7 years, 8 months

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Patch "net/mlx5: avoid build warning for uniprocessor" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx5: avoid build warning for uniprocessor to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx5-avoid-build-warning-for-uniprocessor.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Arnd Bergmann <arnd(a)arndb.de> Date: Mon, 29 May 2017 15:00:17 +0200 Subject: net/mlx5: avoid build warning for uniprocessor From: Arnd Bergmann <arnd(a)arndb.de> [ Upstream commit f0d7ae95fff4ab444b8433f07afc4b077ef1a285 ] Building the driver with CONFIG_SMP disabled results in a harmless warning: ethernet/mellanox/mlx5/core/main.c: In function 'mlx5_irq_set_affinity_hint': ethernet/mellanox/mlx5/core/main.c:615:6: error: unused variable 'irq' [-Werror=unused-variable] It's better to express the conditional compilation using IS_ENABLED() here, as that lets the compiler see what the intented use for the variable is, and that it can be silently discarded. Fixes: b665d98edc9a ("net/mlx5: Tolerate irq_set_affinity_hint() failures") Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> Acked-by: Saeed Mahameed <saeedm(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx5/core/main.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -557,10 +557,9 @@ static int mlx5_irq_set_affinity_hint(st cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node), priv->irq_info[i].mask); -#ifdef CONFIG_SMP - if (irq_set_affinity_hint(irq, priv->irq_info[i].mask)) + if (IS_ENABLED(CONFIG_SMP) && + irq_set_affinity_hint(irq, priv->irq_info[i].mask)) mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", irq); -#endif return 0; } Patches currently in stable-queue which might be from arnd(a)arndb.de are queue-4.9/net-mlx5-avoid-build-warning-for-uniprocessor.patch queue-4.9/xen-avoid-type-warning-in-xchg_xen_ulong.patch

7 years, 8 months

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Patch "net/mlx4_en: Change default QoS settings" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx4_en: Change default QoS settings to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx4_en-change-default-qos-settings.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Moni Shoua <monis(a)mellanox.com> Date: Thu, 28 Dec 2017 16:26:11 +0200 Subject: net/mlx4_en: Change default QoS settings From: Moni Shoua <monis(a)mellanox.com> [ Upstream commit a42b63c1ac1986f17f71bc91a6b0aaa14d4dae71 ] Change the default mapping between TC and TCG as follows: Prio | TC/TCG | from to | (set by FW) (set by SW) ---------+----------------------------------- 0 | 0/0 0/7 1 | 1/0 0/6 2 | 2/0 0/5 3 | 3/0 0/4 4 | 4/0 0/3 5 | 5/0 0/2 6 | 6/0 0/1 7 | 7/0 0/0 These new settings cause that a pause frame for any prio stops traffic for all prios. Fixes: 564c274c3df0 ("net/mlx4_en: DCB QoS support") Signed-off-by: Moni Shoua <monis(a)mellanox.com> Signed-off-by: Maor Gottlieb <maorg(a)mellanox.com> Signed-off-by: Tariq Toukan <tariqt(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c | 5 +++++ drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 7 +++++++ drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 1 + 3 files changed, 13 insertions(+) --- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c @@ -310,6 +310,7 @@ static int mlx4_en_ets_validate(struct m } switch (ets->tc_tsa[i]) { + case IEEE_8021QAZ_TSA_VENDOR: case IEEE_8021QAZ_TSA_STRICT: break; case IEEE_8021QAZ_TSA_ETS: @@ -347,6 +348,10 @@ static int mlx4_en_config_port_scheduler /* higher TC means higher priority => lower pg */ for (i = IEEE_8021QAZ_MAX_TCS - 1; i >= 0; i--) { switch (ets->tc_tsa[i]) { + case IEEE_8021QAZ_TSA_VENDOR: + pg[i] = MLX4_EN_TC_VENDOR; + tc_tx_bw[i] = MLX4_EN_BW_MAX; + break; case IEEE_8021QAZ_TSA_STRICT: pg[i] = num_strict++; tc_tx_bw[i] = MLX4_EN_BW_MAX; --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -3125,6 +3125,13 @@ int mlx4_en_init_netdev(struct mlx4_en_d priv->msg_enable = MLX4_EN_MSG_LEVEL; #ifdef CONFIG_MLX4_EN_DCB if (!mlx4_is_slave(priv->mdev->dev)) { + u8 prio; + + for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) { + priv->ets.prio_tc[prio] = prio; + priv->ets.tc_tsa[prio] = IEEE_8021QAZ_TSA_VENDOR; + } + priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE; priv->flags |= MLX4_EN_DCB_ENABLED; --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -472,6 +472,7 @@ struct mlx4_en_frag_info { #define MLX4_EN_BW_MIN 1 #define MLX4_EN_BW_MAX 100 /* Utilize 100% of the line */ +#define MLX4_EN_TC_VENDOR 0 #define MLX4_EN_TC_ETS 7 enum dcb_pfc_type { Patches currently in stable-queue which might be from monis(a)mellanox.com are queue-4.9/net-mlx4_en-change-default-qos-settings.patch

7 years, 8 months

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Patch "net/mlx4_en: Avoid adding steering rules with invalid ring" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx4_en: Avoid adding steering rules with invalid ring to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx4_en-avoid-adding-steering-rules-with-invalid-ring.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Talat Batheesh <talatb(a)mellanox.com> Date: Tue, 9 May 2017 14:45:23 +0300 Subject: net/mlx4_en: Avoid adding steering rules with invalid ring From: Talat Batheesh <talatb(a)mellanox.com> [ Upstream commit 89c557687a32c294e9d25670a96e9287c09f2d5f ] Inserting steering rules with illegal ring is an invalid operation, block it. Fixes: 820672812f82 ('net/mlx4_en: Manage flow steering rules with ethtool') Signed-off-by: Talat Batheesh <talatb(a)mellanox.com> Signed-off-by: Tariq Toukan <tariqt(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -1520,6 +1520,11 @@ static int mlx4_en_flow_replace(struct n qpn = priv->drop_qp.qpn; else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) { qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1); + if (qpn < priv->rss_map.base_qpn || + qpn >= priv->rss_map.base_qpn + priv->rx_ring_num) { + en_warn(priv, "rxnfc: QP (0x%x) doesn't exist\n", qpn); + return -EINVAL; + } } else { if (cmd->fs.ring_cookie >= priv->rx_ring_num) { en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist\n", Patches currently in stable-queue which might be from talatb(a)mellanox.com are queue-4.9/net-mlx4_en-avoid-adding-steering-rules-with-invalid-ring.patch queue-4.9/net-mlx4-fix-the-check-in-attaching-steering-rules.patch

7 years, 8 months

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Patch "net/mlx4: Fix the check in attaching steering rules" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx4: Fix the check in attaching steering rules to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx4-fix-the-check-in-attaching-steering-rules.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Talat Batheesh <talatb(a)mellanox.com> Date: Sun, 4 Jun 2017 14:30:07 +0300 Subject: net/mlx4: Fix the check in attaching steering rules From: Talat Batheesh <talatb(a)mellanox.com> [ Upstream commit 6dc06c08bef1c746ff8da33dab677cfbacdcad32 ] Our previous patch (cited below) introduced a regression for RAW Eth QPs. Fix it by checking if the QP number provided by user-space exists, hence allowing steering rules to be added for valid QPs only. Fixes: 89c557687a32 ("net/mlx4_en: Avoid adding steering rules with invalid ring") Reported-by: Or Gerlitz <gerlitz.or(a)gmail.com> Signed-off-by: Talat Batheesh <talatb(a)mellanox.com> Signed-off-by: Tariq Toukan <tariqt(a)mellanox.com> Acked-by: Or Gerlitz <ogerlitz(a)mellanox.com> Reviewed-by: Leon Romanovsky <leonro(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 5 ----- drivers/net/ethernet/mellanox/mlx4/mcg.c | 15 +++++++++++---- drivers/net/ethernet/mellanox/mlx4/qp.c | 13 +++++++++++++ include/linux/mlx4/qp.h | 1 + 4 files changed, 25 insertions(+), 9 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -1520,11 +1520,6 @@ static int mlx4_en_flow_replace(struct n qpn = priv->drop_qp.qpn; else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) { qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1); - if (qpn < priv->rss_map.base_qpn || - qpn >= priv->rss_map.base_qpn + priv->rx_ring_num) { - en_warn(priv, "rxnfc: QP (0x%x) doesn't exist\n", qpn); - return -EINVAL; - } } else { if (cmd->fs.ring_cookie >= priv->rx_ring_num) { en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist\n", --- a/drivers/net/ethernet/mellanox/mlx4/mcg.c +++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c @@ -35,6 +35,7 @@ #include <linux/etherdevice.h> #include <linux/mlx4/cmd.h> +#include <linux/mlx4/qp.h> #include <linux/export.h> #include "mlx4.h" @@ -985,16 +986,21 @@ int mlx4_flow_attach(struct mlx4_dev *de if (IS_ERR(mailbox)) return PTR_ERR(mailbox); + if (!mlx4_qp_lookup(dev, rule->qpn)) { + mlx4_err_rule(dev, "QP doesn't exist\n", rule); + ret = -EINVAL; + goto out; + } + trans_rule_ctrl_to_hw(rule, mailbox->buf); size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); list_for_each_entry(cur, &rule->list, list) { ret = parse_trans_rule(dev, cur, mailbox->buf + size); - if (ret < 0) { - mlx4_free_cmd_mailbox(dev, mailbox); - return ret; - } + if (ret < 0) + goto out; + size += ret; } @@ -1021,6 +1027,7 @@ int mlx4_flow_attach(struct mlx4_dev *de } } +out: mlx4_free_cmd_mailbox(dev, mailbox); return ret; --- a/drivers/net/ethernet/mellanox/mlx4/qp.c +++ b/drivers/net/ethernet/mellanox/mlx4/qp.c @@ -387,6 +387,19 @@ static void mlx4_qp_free_icm(struct mlx4 __mlx4_qp_free_icm(dev, qpn); } +struct mlx4_qp *mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn) +{ + struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; + struct mlx4_qp *qp; + + spin_lock(&qp_table->lock); + + qp = __mlx4_qp_lookup(dev, qpn); + + spin_unlock(&qp_table->lock); + return qp; +} + int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp, gfp_t gfp) { struct mlx4_priv *priv = mlx4_priv(dev); --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -470,6 +470,7 @@ struct mlx4_update_qp_params { u16 rate_val; }; +struct mlx4_qp *mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn); int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn, enum mlx4_update_qp_attr attr, struct mlx4_update_qp_params *params); Patches currently in stable-queue which might be from talatb(a)mellanox.com are queue-4.9/net-mlx4_en-avoid-adding-steering-rules-with-invalid-ring.patch queue-4.9/net-mlx4-fix-the-check-in-attaching-steering-rules.patch

7 years, 8 months

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Patch "net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx4-check-if-granular-qos-per-vf-has-been-enabled-before-updating-qp-qos_vport.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Ido Shamay <idos(a)mellanox.com> Date: Mon, 5 Jun 2017 10:44:56 +0300 Subject: net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport From: Ido Shamay <idos(a)mellanox.com> [ Upstream commit 269f9883fe254d109afdfc657875c456d6fabb08 ] The Granular QoS per VF feature must be enabled in FW before it can be used. Thus, the driver cannot modify a QP's qos_vport value (via the UPDATE_QP FW command) if the feature has not been enabled -- the FW returns an error if this is attempted. Fixes: 08068cd5683f ("net/mlx4: Added qos_vport QP configuration in VST mode") Signed-off-by: Ido Shamay <idos(a)mellanox.com> Signed-off-by: Jack Morgenstein <jackm(a)dev.mellanox.co.il> Signed-off-by: Tariq Toukan <tariqt(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx4/qp.c | 6 ++++++ drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 16 +++++++++++----- 2 files changed, 17 insertions(+), 5 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx4/qp.c +++ b/drivers/net/ethernet/mellanox/mlx4/qp.c @@ -487,6 +487,12 @@ int mlx4_update_qp(struct mlx4_dev *dev, } if (attr & MLX4_UPDATE_QP_QOS_VPORT) { + if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP)) { + mlx4_warn(dev, "Granular QoS per VF is not enabled\n"); + err = -EOPNOTSUPP; + goto out; + } + qp_mask |= 1ULL << MLX4_UPD_QP_MASK_QOS_VPP; cmd->qp_context.qos_vport = params->qos_vport; } --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -5214,6 +5214,13 @@ void mlx4_delete_all_resources_for_slave mutex_unlock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex); } +static void update_qos_vpp(struct mlx4_update_qp_context *ctx, + struct mlx4_vf_immed_vlan_work *work) +{ + ctx->qp_mask |= cpu_to_be64(1ULL << MLX4_UPD_QP_MASK_QOS_VPP); + ctx->qp_context.qos_vport = work->qos_vport; +} + void mlx4_vf_immed_vlan_work_handler(struct work_struct *_work) { struct mlx4_vf_immed_vlan_work *work = @@ -5328,11 +5335,10 @@ void mlx4_vf_immed_vlan_work_handler(str qp->sched_queue & 0xC7; upd_context->qp_context.pri_path.sched_queue |= ((work->qos & 0x7) << 3); - upd_context->qp_mask |= - cpu_to_be64(1ULL << - MLX4_UPD_QP_MASK_QOS_VPP); - upd_context->qp_context.qos_vport = - work->qos_vport; + + if (dev->caps.flags2 & + MLX4_DEV_CAP_FLAG2_QOS_VPP) + update_qos_vpp(upd_context, work); } err = mlx4_cmd(dev, mailbox->dma, Patches currently in stable-queue which might be from idos(a)mellanox.com are queue-4.9/net-mlx4-check-if-granular-qos-per-vf-has-been-enabled-before-updating-qp-qos_vport.patch

7 years, 8 months

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Patch "net: llc: add lock_sock in llc_ui_bind to avoid a race condition" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: llc: add lock_sock in llc_ui_bind to avoid a race condition to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-llc-add-lock_sock-in-llc_ui_bind-to-avoid-a-race-condition.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: linzhang <xiaolou4617(a)gmail.com> Date: Thu, 25 May 2017 14:07:18 +0800 Subject: net: llc: add lock_sock in llc_ui_bind to avoid a race condition From: linzhang <xiaolou4617(a)gmail.com> [ Upstream commit 0908cf4dfef35fc6ac12329007052ebe93ff1081 ] There is a race condition in llc_ui_bind if two or more processes/threads try to bind a same socket. If more processes/threads bind a same socket success that will lead to two problems, one is this action is not what we expected, another is will lead to kernel in unstable status or oops(in my simple test case, cause llc2.ko can't unload). The current code is test SOCK_ZAPPED bit to avoid a process to bind a same socket twice but that is can't avoid more processes/threads try to bind a same socket at the same time. So, add lock_sock in llc_ui_bind like others, such as llc_ui_connect. Signed-off-by: Lin Zhang <xiaolou4617(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/llc/af_llc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -309,6 +309,8 @@ static int llc_ui_bind(struct socket *so int rc = -EINVAL; dprintk("%s: binding %02X\n", __func__, addr->sllc_sap); + + lock_sock(sk); if (unlikely(!sock_flag(sk, SOCK_ZAPPED) || addrlen != sizeof(*addr))) goto out; rc = -EAFNOSUPPORT; @@ -380,6 +382,7 @@ static int llc_ui_bind(struct socket *so out_put: llc_sap_put(sap); out: + release_sock(sk); return rc; } Patches currently in stable-queue which might be from xiaolou4617(a)gmail.com are queue-4.9/net-x25-fix-one-potential-use-after-free-issue.patch queue-4.9/net-llc-add-lock_sock-in-llc_ui_bind-to-avoid-a-race-condition.patch queue-4.9/net-ieee802154-fix-net_device-reference-release-too-early.patch

7 years, 8 months

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Patch "net: ieee802154: fix net_device reference release too early" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: ieee802154: fix net_device reference release too early to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-ieee802154-fix-net_device-reference-release-too-early.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: Lin Zhang <xiaolou4617(a)gmail.com> Date: Tue, 23 May 2017 13:29:39 +0800 Subject: net: ieee802154: fix net_device reference release too early From: Lin Zhang <xiaolou4617(a)gmail.com> [ Upstream commit a611c58b3d42a92e6b23423e166dd17c0c7fffce ] This patch fixes the kernel oops when release net_device reference in advance. In function raw_sendmsg(i think the dgram_sendmsg has the same problem), there is a race condition between dev_put and dev_queue_xmit when the device is gong that maybe lead to dev_queue_ximt to see an illegal net_device pointer. My test kernel is 3.13.0-32 and because i am not have a real 802154 device, so i change lowpan_newlink function to this: /* find and hold real wpan device */ real_dev = dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); if (!real_dev) return -ENODEV; // if (real_dev->type != ARPHRD_IEEE802154) { // dev_put(real_dev); // return -EINVAL; // } lowpan_dev_info(dev)->real_dev = real_dev; lowpan_dev_info(dev)->fragment_tag = 0; mutex_init(&lowpan_dev_info(dev)->dev_list_mtx); Also, in order to simulate preempt, i change the raw_sendmsg function to this: skb->dev = dev; skb->sk = sk; skb->protocol = htons(ETH_P_IEEE802154); dev_put(dev); //simulate preempt schedule_timeout_uninterruptible(30 * HZ); err = dev_queue_xmit(skb); if (err > 0) err = net_xmit_errno(err); and this is my userspace test code named test_send_data: int main(int argc, char **argv) { char buf[127]; int sockfd; sockfd = socket(AF_IEEE802154, SOCK_RAW, 0); if (sockfd < 0) { printf("create sockfd error: %s\n", strerror(errno)); return -1; } send(sockfd, buf, sizeof(buf), 0); return 0; } This is my test case: root@zhanglin-x-computer:~/develop/802154# uname -a Linux zhanglin-x-computer 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux root@zhanglin-x-computer:~/develop/802154# ip link add link eth0 name lowpan0 type lowpan root@zhanglin-x-computer:~/develop/802154# //keep the lowpan0 device down root@zhanglin-x-computer:~/develop/802154# ./test_send_data & //wait a while root@zhanglin-x-computer:~/develop/802154# ip link del link dev lowpan0 //the device is gone //oops [381.303307] general protection fault: 0000 [#1]SMP [381.303407] Modules linked in: af_802154 6lowpan bnep rfcomm bluetooth nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek rts5139(C) snd_hda_intel snd_had_codec snd_hwdep snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_req intel_rapl snd_seq_device coretemp i915 kvm_intel kvm snd_timer snd crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cypted drm_kms_helper drm i2c_algo_bit soundcore video mac_hid parport_pc ppdev ip parport hid_generic usbhid hid ahci r8169 mii libahdi [381.304286] CPU:1 PID: 2524 Commm: 1 Tainted: G C 0 3.13.0-32-generic [381.304409] Hardware name: Haier Haier DT Computer/Haier DT Codputer, BIOS FIBT19H02_X64 06/09/2014 [381.304546] tasks: ffff000096965fc0 ti: ffffB0013779c000 task.ti: ffffB8013779c000 [381.304659] RIP: 0010:[<ffffffff01621fe1>] [<ffffffff81621fe1>] __dev_queue_ximt+0x61/0x500 [381.304798] RSP: 0018:ffffB8013779dca0 EFLAGS: 00010202 [381.304880] RAX: 272b031d57565351 RBX: 0000000000000000 RCX: ffff8800968f1a00 [381.304987] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8800968f1a00 [381.305095] RBP: ffff8e013773dce0 R08: 0000000000000266 R09: 0000000000000004 [381.305202] R10: 0000000000000004 R11: 0000000000000005 R12: ffff88013902e000 [381.305310] R13: 000000000000007f R14: 000000000000007f R15: ffff8800968f1a00 [381.305418] FS: 00007fc57f50f740(0000) GS: ffff88013fc80000(0000) knlGS: 0000000000000000 [381.305540] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [381.305627] CR2: 00007fad0841c000 CR3: 00000001368dd000 CR4: 00000000001007e0 [361.905734] Stack: [381.305768] 00000000002052d0 000000003facb30a ffff88013779dcc0 ffff880137764000 [381.305898] ffff88013779de70 000000000000007f 000000000000007f ffff88013902e000 [381.306026] ffff88013779dcf0 ffffffff81622490 ffff88013779dd39 ffffffffa03af9f1 [381.306155] Call Trace: [381.306202] [<ffffffff81622490>] dev_queue_xmit+0x10/0x20 [381.306294] [<ffffffffa03af9f1>] raw_sendmsg+0x1b1/0x270 [af_802154] [381.306396] [<ffffffffa03af054>] ieee802154_sock_sendmsg+0x14/0x20 [af_802154] [381.306512] [<ffffffff816079eb>] sock_sendmsg+0x8b/0xc0 [381.306600] [<ffffffff811d52a5>] ? __d_alloc+0x25/0x180 [381.306687] [<ffffffff811a1f56>] ? kmem_cache_alloc_trace+0x1c6/0x1f0 [381.306791] [<ffffffff81607b91>] SYSC_sendto+0x121/0x1c0 [381.306878] [<ffffffff8109ddf4>] ? vtime_account_user+x54/0x60 [381.306975] [<ffffffff81020d45>] ? syscall_trace_enter+0x145/0x250 [381.307073] [<ffffffff816086ae>] SyS_sendto+0xe/0x10 [381.307156] [<ffffffff8172c87f>] tracesys+0xe1/0xe6 [381.307233] Code: c6 a1 a4 ff 41 8b 57 78 49 8b 47 20 85 d2 48 8b 80 78 07 00 00 75 21 49 8b 57 18 48 85 d2 74 18 48 85 c0 74 13 8b 92 ac 01 00 00 <3b> 50 10 73 08 8b 44 90 14 41 89 47 78 41 f6 84 24 d5 00 00 00 [381.307801] RIP [<ffffffff81621fe1>] _dev_queue_xmit+0x61/0x500 [381.307901] RSP <ffff88013779dca0> [381.347512] Kernel panic - not syncing: Fatal exception in interrupt [381.347747] drm_kms_helper: panic occurred, switching back to text console In my opinion, there is always exist a chance that the device is gong before call dev_queue_xmit. I think the latest kernel is have the same problem and that dev_put should be behind of the dev_queue_xmit. Signed-off-by: Lin Zhang <xiaolou4617(a)gmail.com> Acked-by: Stefan Schmidt <stefan(a)osg.samsung.com> Signed-off-by: Marcel Holtmann <marcel(a)holtmann.org> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ieee802154/socket.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/net/ieee802154/socket.c +++ b/net/ieee802154/socket.c @@ -304,12 +304,12 @@ static int raw_sendmsg(struct sock *sk, skb->sk = sk; skb->protocol = htons(ETH_P_IEEE802154); - dev_put(dev); - err = dev_queue_xmit(skb); if (err > 0) err = net_xmit_errno(err); + dev_put(dev); + return err ?: size; out_skb: @@ -693,12 +693,12 @@ static int dgram_sendmsg(struct sock *sk skb->sk = sk; skb->protocol = htons(ETH_P_IEEE802154); - dev_put(dev); - err = dev_queue_xmit(skb); if (err > 0) err = net_xmit_errno(err); + dev_put(dev); + return err ?: size; out_skb: Patches currently in stable-queue which might be from xiaolou4617(a)gmail.com are queue-4.9/net-x25-fix-one-potential-use-after-free-issue.patch queue-4.9/net-llc-add-lock_sock-in-llc_ui_bind-to-avoid-a-race-condition.patch queue-4.9/net-ieee802154-fix-net_device-reference-release-too-early.patch

7 years, 8 months

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Patch "net: freescale: fix potential null pointer dereference" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: freescale: fix potential null pointer dereference to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-freescale-fix-potential-null-pointer-dereference.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Apr 9 17:09:24 CEST 2018 From: "Gustavo A. R. Silva" <garsilva(a)embeddedor.com> Date: Tue, 30 May 2017 17:38:43 -0500 Subject: net: freescale: fix potential null pointer dereference From: "Gustavo A. R. Silva" <garsilva(a)embeddedor.com> [ Upstream commit 06d2d6431bc8d41ef5ffd8bd4b52cea9f72aed22 ] Add NULL check before dereferencing pointer _id_ in order to avoid a potential NULL pointer dereference. Addresses-Coverity-ID: 1397995 Signed-off-by: Gustavo A. R. Silva <garsilva(a)embeddedor.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/freescale/fsl_pq_mdio.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c +++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c @@ -381,7 +381,7 @@ static int fsl_pq_mdio_probe(struct plat { const struct of_device_id *id = of_match_device(fsl_pq_mdio_match, &pdev->dev); - const struct fsl_pq_mdio_data *data = id->data; + const struct fsl_pq_mdio_data *data; struct device_node *np = pdev->dev.of_node; struct resource res; struct device_node *tbi; @@ -389,6 +389,13 @@ static int fsl_pq_mdio_probe(struct plat struct mii_bus *new_bus; int err; + if (!id) { + dev_err(&pdev->dev, "Failed to match device\n"); + return -ENODEV; + } + + data = id->data; + dev_dbg(&pdev->dev, "found %s compatible node\n", id->compatible); new_bus = mdiobus_alloc_size(sizeof(*priv)); Patches currently in stable-queue which might be from garsilva(a)embeddedor.com are queue-4.9/pm-devfreq-fix-potential-null-pointer-dereference-in-governor_store.patch queue-4.9/net-freescale-fix-potential-null-pointer-dereference.patch

7 years, 8 months

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