From 958a1b5a5ed02a768eb27760268251af93090caf Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Mon, 11 Dec 2017 15:37:49 -0700 Subject: nl80211: Remove obsolete kerneldoc line Commit ca986ad9bcd3 (nl80211: allow multiple active scheduled scan requests) removed WIPHY_FLAG_SUPPORTS_SCHED_SCAN but left the kerneldoc description in place, leading to this docs-build warning: ./include/net/cfg80211.h:3278: warning: Excess enum value 'WIPHY_FLAG_SUPPORTS_SCHED_SCAN' description in 'wiphy_flags' Remove the line and gain a bit of peace. Signed-off-by: Jonathan Corbet Acked-by: Arend van Spriel Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 8b8118a7fadb..cb4d92b79cd9 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3226,7 +3226,6 @@ struct cfg80211_ops { * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. - * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the * firmware. * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. -- cgit v1.2.3-73-gaa49b From 231243c82793428467524227ae02ca451e6a98e7 Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Fri, 10 Nov 2017 15:59:52 +0900 Subject: Revert "mlx5: move affinity hints assignments to generic code" Before the offending commit, mlx5 core did the IRQ affinity itself, and it seems that the new generic code have some drawbacks and one of them is the lack for user ability to modify irq affinity after the initial affinity values got assigned. The issue is still being discussed and a solution in the new generic code is required, until then we need to revert this patch. This fixes the following issue: echo > /proc/irq//smp_affinity fails with -EIO This reverts commit a435393acafbf0ecff4deb3e3cb554b34f0d0664. Note: kept mlx5_get_vector_affinity in include/linux/mlx5/driver.h since it is used in mlx5_ib driver. Fixes: a435393acafb ("mlx5: move affinity hints assignments to generic code") Cc: Sagi Grimberg Cc: Thomas Gleixner Cc: Jes Sorensen Reported-by: Jes Sorensen Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 1 + drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 45 +++++++------- drivers/net/ethernet/mellanox/mlx5/core/main.c | 75 +++++++++++++++++++++-- include/linux/mlx5/driver.h | 1 + 4 files changed, 93 insertions(+), 29 deletions(-) (limited to 'include') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index c0872b3284cb..43f9054830e5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -590,6 +590,7 @@ struct mlx5e_channel { struct mlx5_core_dev *mdev; struct hwtstamp_config *tstamp; int ix; + int cpu; }; struct mlx5e_channels { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index d2b057a3e512..cbec66bc82f1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -71,11 +71,6 @@ struct mlx5e_channel_param { struct mlx5e_cq_param icosq_cq; }; -static int mlx5e_get_node(struct mlx5e_priv *priv, int ix) -{ - return pci_irq_get_node(priv->mdev->pdev, MLX5_EQ_VEC_COMP_BASE + ix); -} - static bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev) { return MLX5_CAP_GEN(mdev, striding_rq) && @@ -444,17 +439,16 @@ static int mlx5e_rq_alloc_mpwqe_info(struct mlx5e_rq *rq, int wq_sz = mlx5_wq_ll_get_size(&rq->wq); int mtt_sz = mlx5e_get_wqe_mtt_sz(); int mtt_alloc = mtt_sz + MLX5_UMR_ALIGN - 1; - int node = mlx5e_get_node(c->priv, c->ix); int i; rq->mpwqe.info = kzalloc_node(wq_sz * sizeof(*rq->mpwqe.info), - GFP_KERNEL, node); + GFP_KERNEL, cpu_to_node(c->cpu)); if (!rq->mpwqe.info) goto err_out; /* We allocate more than mtt_sz as we will align the pointer */ - rq->mpwqe.mtt_no_align = kzalloc_node(mtt_alloc * wq_sz, - GFP_KERNEL, node); + rq->mpwqe.mtt_no_align = kzalloc_node(mtt_alloc * wq_sz, GFP_KERNEL, + cpu_to_node(c->cpu)); if (unlikely(!rq->mpwqe.mtt_no_align)) goto err_free_wqe_info; @@ -562,7 +556,7 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c, int err; int i; - rqp->wq.db_numa_node = mlx5e_get_node(c->priv, c->ix); + rqp->wq.db_numa_node = cpu_to_node(c->cpu); err = mlx5_wq_ll_create(mdev, &rqp->wq, rqc_wq, &rq->wq, &rq->wq_ctrl); @@ -629,8 +623,7 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c, default: /* MLX5_WQ_TYPE_LINKED_LIST */ rq->wqe.frag_info = kzalloc_node(wq_sz * sizeof(*rq->wqe.frag_info), - GFP_KERNEL, - mlx5e_get_node(c->priv, c->ix)); + GFP_KERNEL, cpu_to_node(c->cpu)); if (!rq->wqe.frag_info) { err = -ENOMEM; goto err_rq_wq_destroy; @@ -1000,13 +993,13 @@ static int mlx5e_alloc_xdpsq(struct mlx5e_channel *c, sq->uar_map = mdev->mlx5e_res.bfreg.map; sq->min_inline_mode = params->tx_min_inline_mode; - param->wq.db_numa_node = mlx5e_get_node(c->priv, c->ix); + param->wq.db_numa_node = cpu_to_node(c->cpu); err = mlx5_wq_cyc_create(mdev, ¶m->wq, sqc_wq, &sq->wq, &sq->wq_ctrl); if (err) return err; sq->wq.db = &sq->wq.db[MLX5_SND_DBR]; - err = mlx5e_alloc_xdpsq_db(sq, mlx5e_get_node(c->priv, c->ix)); + err = mlx5e_alloc_xdpsq_db(sq, cpu_to_node(c->cpu)); if (err) goto err_sq_wq_destroy; @@ -1053,13 +1046,13 @@ static int mlx5e_alloc_icosq(struct mlx5e_channel *c, sq->channel = c; sq->uar_map = mdev->mlx5e_res.bfreg.map; - param->wq.db_numa_node = mlx5e_get_node(c->priv, c->ix); + param->wq.db_numa_node = cpu_to_node(c->cpu); err = mlx5_wq_cyc_create(mdev, ¶m->wq, sqc_wq, &sq->wq, &sq->wq_ctrl); if (err) return err; sq->wq.db = &sq->wq.db[MLX5_SND_DBR]; - err = mlx5e_alloc_icosq_db(sq, mlx5e_get_node(c->priv, c->ix)); + err = mlx5e_alloc_icosq_db(sq, cpu_to_node(c->cpu)); if (err) goto err_sq_wq_destroy; @@ -1126,13 +1119,13 @@ static int mlx5e_alloc_txqsq(struct mlx5e_channel *c, if (MLX5_IPSEC_DEV(c->priv->mdev)) set_bit(MLX5E_SQ_STATE_IPSEC, &sq->state); - param->wq.db_numa_node = mlx5e_get_node(c->priv, c->ix); + param->wq.db_numa_node = cpu_to_node(c->cpu); err = mlx5_wq_cyc_create(mdev, ¶m->wq, sqc_wq, &sq->wq, &sq->wq_ctrl); if (err) return err; sq->wq.db = &sq->wq.db[MLX5_SND_DBR]; - err = mlx5e_alloc_txqsq_db(sq, mlx5e_get_node(c->priv, c->ix)); + err = mlx5e_alloc_txqsq_db(sq, cpu_to_node(c->cpu)); if (err) goto err_sq_wq_destroy; @@ -1504,8 +1497,8 @@ static int mlx5e_alloc_cq(struct mlx5e_channel *c, struct mlx5_core_dev *mdev = c->priv->mdev; int err; - param->wq.buf_numa_node = mlx5e_get_node(c->priv, c->ix); - param->wq.db_numa_node = mlx5e_get_node(c->priv, c->ix); + param->wq.buf_numa_node = cpu_to_node(c->cpu); + param->wq.db_numa_node = cpu_to_node(c->cpu); param->eq_ix = c->ix; err = mlx5e_alloc_cq_common(mdev, param, cq); @@ -1604,6 +1597,11 @@ static void mlx5e_close_cq(struct mlx5e_cq *cq) mlx5e_free_cq(cq); } +static int mlx5e_get_cpu(struct mlx5e_priv *priv, int ix) +{ + return cpumask_first(priv->mdev->priv.irq_info[ix].mask); +} + static int mlx5e_open_tx_cqs(struct mlx5e_channel *c, struct mlx5e_params *params, struct mlx5e_channel_param *cparam) @@ -1752,12 +1750,13 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix, { struct mlx5e_cq_moder icocq_moder = {0, 0}; struct net_device *netdev = priv->netdev; + int cpu = mlx5e_get_cpu(priv, ix); struct mlx5e_channel *c; unsigned int irq; int err; int eqn; - c = kzalloc_node(sizeof(*c), GFP_KERNEL, mlx5e_get_node(priv, ix)); + c = kzalloc_node(sizeof(*c), GFP_KERNEL, cpu_to_node(cpu)); if (!c) return -ENOMEM; @@ -1765,6 +1764,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix, c->mdev = priv->mdev; c->tstamp = &priv->tstamp; c->ix = ix; + c->cpu = cpu; c->pdev = &priv->mdev->pdev->dev; c->netdev = priv->netdev; c->mkey_be = cpu_to_be32(priv->mdev->mlx5e_res.mkey.key); @@ -1853,8 +1853,7 @@ static void mlx5e_activate_channel(struct mlx5e_channel *c) for (tc = 0; tc < c->num_tc; tc++) mlx5e_activate_txqsq(&c->sq[tc]); mlx5e_activate_rq(&c->rq); - netif_set_xps_queue(c->netdev, - mlx5_get_vector_affinity(c->priv->mdev, c->ix), c->ix); + netif_set_xps_queue(c->netdev, get_cpu_mask(c->cpu), c->ix); } static void mlx5e_deactivate_channel(struct mlx5e_channel *c) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 5f323442cc5a..8a89c7e8cd63 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -317,9 +317,6 @@ static int mlx5_alloc_irq_vectors(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_eq_table *table = &priv->eq_table; - struct irq_affinity irqdesc = { - .pre_vectors = MLX5_EQ_VEC_COMP_BASE, - }; int num_eqs = 1 << MLX5_CAP_GEN(dev, log_max_eq); int nvec; @@ -333,10 +330,9 @@ static int mlx5_alloc_irq_vectors(struct mlx5_core_dev *dev) if (!priv->irq_info) goto err_free_msix; - nvec = pci_alloc_irq_vectors_affinity(dev->pdev, + nvec = pci_alloc_irq_vectors(dev->pdev, MLX5_EQ_VEC_COMP_BASE + 1, nvec, - PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, - &irqdesc); + PCI_IRQ_MSIX); if (nvec < 0) return nvec; @@ -622,6 +618,63 @@ u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev) return (u64)timer_l | (u64)timer_h1 << 32; } +static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i) +{ + struct mlx5_priv *priv = &mdev->priv; + int irq = pci_irq_vector(mdev->pdev, MLX5_EQ_VEC_COMP_BASE + i); + + if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) { + mlx5_core_warn(mdev, "zalloc_cpumask_var failed"); + return -ENOMEM; + } + + cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node), + 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); + + return 0; +} + +static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i) +{ + struct mlx5_priv *priv = &mdev->priv; + int irq = pci_irq_vector(mdev->pdev, MLX5_EQ_VEC_COMP_BASE + i); + + irq_set_affinity_hint(irq, NULL); + free_cpumask_var(priv->irq_info[i].mask); +} + +static int mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev) +{ + int err; + int i; + + for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) { + err = mlx5_irq_set_affinity_hint(mdev, i); + if (err) + goto err_out; + } + + return 0; + +err_out: + for (i--; i >= 0; i--) + mlx5_irq_clear_affinity_hint(mdev, i); + + return err; +} + +static void mlx5_irq_clear_affinity_hints(struct mlx5_core_dev *mdev) +{ + int i; + + for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) + mlx5_irq_clear_affinity_hint(mdev, i); +} + int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn, unsigned int *irqn) { @@ -1097,6 +1150,12 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv, goto err_stop_eqs; } + err = mlx5_irq_set_affinity_hints(dev); + if (err) { + dev_err(&pdev->dev, "Failed to alloc affinity hint cpumask\n"); + goto err_affinity_hints; + } + err = mlx5_init_fs(dev); if (err) { dev_err(&pdev->dev, "Failed to init flow steering\n"); @@ -1154,6 +1213,9 @@ err_sriov: mlx5_cleanup_fs(dev); err_fs: + mlx5_irq_clear_affinity_hints(dev); + +err_affinity_hints: free_comp_eqs(dev); err_stop_eqs: @@ -1222,6 +1284,7 @@ static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv, mlx5_sriov_detach(dev); mlx5_cleanup_fs(dev); + mlx5_irq_clear_affinity_hints(dev); free_comp_eqs(dev); mlx5_stop_eqs(dev); mlx5_put_uars_page(dev, priv->uar); diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index a886b51511ab..40a6f33c4cde 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -556,6 +556,7 @@ struct mlx5_core_sriov { }; struct mlx5_irq_info { + cpumask_var_t mask; char name[MLX5_MAX_IRQ_NAME]; }; -- cgit v1.2.3-73-gaa49b From 37e92a9d4fe38dc3e7308913575983a6a088c8d4 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Mon, 13 Nov 2017 10:11:27 +0200 Subject: net/mlx5: Fix rate limit packet pacing naming and struct In mlx5_ifc, struct size was not complete, and thus driver was sending garbage after the last defined field. Fixed it by adding reserved field to complete the struct size. In addition, rename all set_rate_limit to set_pp_rate_limit to be compliant with the Firmware <-> Driver definition. Fixes: 7486216b3a0b ("{net,IB}/mlx5: mlx5_ifc updates") Fixes: 1466cc5b23d1 ("net/mlx5: Rate limit tables support") Signed-off-by: Eran Ben Elisha Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 4 ++-- drivers/net/ethernet/mellanox/mlx5/core/rl.c | 22 +++++++++++----------- include/linux/mlx5/mlx5_ifc.h | 8 +++++--- 3 files changed, 18 insertions(+), 16 deletions(-) (limited to 'include') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c index 1fffdebbc9e8..e9a1fbcc4adf 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -362,7 +362,7 @@ static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, case MLX5_CMD_OP_QUERY_VPORT_COUNTER: case MLX5_CMD_OP_ALLOC_Q_COUNTER: case MLX5_CMD_OP_QUERY_Q_COUNTER: - case MLX5_CMD_OP_SET_RATE_LIMIT: + case MLX5_CMD_OP_SET_PP_RATE_LIMIT: case MLX5_CMD_OP_QUERY_RATE_LIMIT: case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: @@ -505,7 +505,7 @@ const char *mlx5_command_str(int command) MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER); MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER); MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER); - MLX5_COMMAND_STR_CASE(SET_RATE_LIMIT); + MLX5_COMMAND_STR_CASE(SET_PP_RATE_LIMIT); MLX5_COMMAND_STR_CASE(QUERY_RATE_LIMIT); MLX5_COMMAND_STR_CASE(CREATE_SCHEDULING_ELEMENT); MLX5_COMMAND_STR_CASE(DESTROY_SCHEDULING_ELEMENT); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/rl.c b/drivers/net/ethernet/mellanox/mlx5/core/rl.c index e651e4c02867..d3c33e9eea72 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/rl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/rl.c @@ -125,16 +125,16 @@ static struct mlx5_rl_entry *find_rl_entry(struct mlx5_rl_table *table, return ret_entry; } -static int mlx5_set_rate_limit_cmd(struct mlx5_core_dev *dev, +static int mlx5_set_pp_rate_limit_cmd(struct mlx5_core_dev *dev, u32 rate, u16 index) { - u32 in[MLX5_ST_SZ_DW(set_rate_limit_in)] = {0}; - u32 out[MLX5_ST_SZ_DW(set_rate_limit_out)] = {0}; + u32 in[MLX5_ST_SZ_DW(set_pp_rate_limit_in)] = {0}; + u32 out[MLX5_ST_SZ_DW(set_pp_rate_limit_out)] = {0}; - MLX5_SET(set_rate_limit_in, in, opcode, - MLX5_CMD_OP_SET_RATE_LIMIT); - MLX5_SET(set_rate_limit_in, in, rate_limit_index, index); - MLX5_SET(set_rate_limit_in, in, rate_limit, rate); + MLX5_SET(set_pp_rate_limit_in, in, opcode, + MLX5_CMD_OP_SET_PP_RATE_LIMIT); + MLX5_SET(set_pp_rate_limit_in, in, rate_limit_index, index); + MLX5_SET(set_pp_rate_limit_in, in, rate_limit, rate); return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); } @@ -173,7 +173,7 @@ int mlx5_rl_add_rate(struct mlx5_core_dev *dev, u32 rate, u16 *index) entry->refcount++; } else { /* new rate limit */ - err = mlx5_set_rate_limit_cmd(dev, rate, entry->index); + err = mlx5_set_pp_rate_limit_cmd(dev, rate, entry->index); if (err) { mlx5_core_err(dev, "Failed configuring rate: %u (%d)\n", rate, err); @@ -209,7 +209,7 @@ void mlx5_rl_remove_rate(struct mlx5_core_dev *dev, u32 rate) entry->refcount--; if (!entry->refcount) { /* need to remove rate */ - mlx5_set_rate_limit_cmd(dev, 0, entry->index); + mlx5_set_pp_rate_limit_cmd(dev, 0, entry->index); entry->rate = 0; } @@ -262,8 +262,8 @@ void mlx5_cleanup_rl_table(struct mlx5_core_dev *dev) /* Clear all configured rates */ for (i = 0; i < table->max_size; i++) if (table->rl_entry[i].rate) - mlx5_set_rate_limit_cmd(dev, 0, - table->rl_entry[i].index); + mlx5_set_pp_rate_limit_cmd(dev, 0, + table->rl_entry[i].index); kfree(dev->priv.rl_table.rl_entry); } diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 38a7577a9ce7..d44ec5f41d4a 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -147,7 +147,7 @@ enum { MLX5_CMD_OP_ALLOC_Q_COUNTER = 0x771, MLX5_CMD_OP_DEALLOC_Q_COUNTER = 0x772, MLX5_CMD_OP_QUERY_Q_COUNTER = 0x773, - MLX5_CMD_OP_SET_RATE_LIMIT = 0x780, + MLX5_CMD_OP_SET_PP_RATE_LIMIT = 0x780, MLX5_CMD_OP_QUERY_RATE_LIMIT = 0x781, MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT = 0x782, MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT = 0x783, @@ -7239,7 +7239,7 @@ struct mlx5_ifc_add_vxlan_udp_dport_in_bits { u8 vxlan_udp_port[0x10]; }; -struct mlx5_ifc_set_rate_limit_out_bits { +struct mlx5_ifc_set_pp_rate_limit_out_bits { u8 status[0x8]; u8 reserved_at_8[0x18]; @@ -7248,7 +7248,7 @@ struct mlx5_ifc_set_rate_limit_out_bits { u8 reserved_at_40[0x40]; }; -struct mlx5_ifc_set_rate_limit_in_bits { +struct mlx5_ifc_set_pp_rate_limit_in_bits { u8 opcode[0x10]; u8 reserved_at_10[0x10]; @@ -7261,6 +7261,8 @@ struct mlx5_ifc_set_rate_limit_in_bits { u8 reserved_at_60[0x20]; u8 rate_limit[0x20]; + + u8 reserved_at_a0[0x160]; }; struct mlx5_ifc_access_register_out_bits { -- cgit v1.2.3-73-gaa49b From d6b2785cd55ee72e9608762650b3ef299f801b1b Mon Sep 17 00:00:00 2001 From: Moshe Shemesh Date: Tue, 21 Nov 2017 15:15:51 +0200 Subject: net/mlx5: Cleanup IRQs in case of unload failure When mlx5_stop_eqs fails to destroy any of the eqs it returns with an error. In such failure flow the function will return without releasing all EQs irqs and then pci_free_irq_vectors will fail. Fix by only warn on destroy EQ failure and continue to release other EQs and their irqs. It fixes the following kernel trace: kernel: kernel BUG at drivers/pci/msi.c:352! ... ... kernel: Call Trace: kernel: pci_disable_msix+0xd3/0x100 kernel: pci_free_irq_vectors+0xe/0x20 kernel: mlx5_load_one.isra.17+0x9f5/0xec0 [mlx5_core] Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: Moshe Shemesh Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/eq.c | 20 +++++++++++++------- include/linux/mlx5/driver.h | 2 +- 2 files changed, 14 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c index 0308a2b4823c..ab4d1465b7e4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c @@ -775,7 +775,7 @@ err1: return err; } -int mlx5_stop_eqs(struct mlx5_core_dev *dev) +void mlx5_stop_eqs(struct mlx5_core_dev *dev) { struct mlx5_eq_table *table = &dev->priv.eq_table; int err; @@ -784,22 +784,28 @@ int mlx5_stop_eqs(struct mlx5_core_dev *dev) if (MLX5_CAP_GEN(dev, pg)) { err = mlx5_destroy_unmap_eq(dev, &table->pfault_eq); if (err) - return err; + mlx5_core_err(dev, "failed to destroy page fault eq, err(%d)\n", + err); } #endif err = mlx5_destroy_unmap_eq(dev, &table->pages_eq); if (err) - return err; + mlx5_core_err(dev, "failed to destroy pages eq, err(%d)\n", + err); - mlx5_destroy_unmap_eq(dev, &table->async_eq); + err = mlx5_destroy_unmap_eq(dev, &table->async_eq); + if (err) + mlx5_core_err(dev, "failed to destroy async eq, err(%d)\n", + err); mlx5_cmd_use_polling(dev); err = mlx5_destroy_unmap_eq(dev, &table->cmd_eq); - if (err) + if (err) { + mlx5_core_err(dev, "failed to destroy command eq, err(%d)\n", + err); mlx5_cmd_use_events(dev); - - return err; + } } int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq, diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 40a6f33c4cde..57b109c6e422 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -1049,7 +1049,7 @@ int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx, enum mlx5_eq_type type); int mlx5_destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq); int mlx5_start_eqs(struct mlx5_core_dev *dev); -int mlx5_stop_eqs(struct mlx5_core_dev *dev); +void mlx5_stop_eqs(struct mlx5_core_dev *dev); int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn, unsigned int *irqn); int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn); -- cgit v1.2.3-73-gaa49b From 102740bd9436a3a6ba129af3a48271d794009fa5 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Tue, 19 Dec 2017 13:32:13 -0800 Subject: cls_bpf: fix offload assumptions after callback conversion cls_bpf used to take care of tracking what offload state a filter is in, i.e. it would track if offload request succeeded or not. This information would then be used to issue correct requests to the driver, e.g. requests for statistics only on offloaded filters, removing only filters which were offloaded, using add instead of replace if previous filter was not added etc. This tracking of offload state no longer functions with the new callback infrastructure. There could be multiple entities trying to offload the same filter. Throw out all the tracking and corresponding commands and simply pass to the drivers both old and new bpf program. Drivers will have to deal with offload state tracking by themselves. Fixes: 3f7889c4c79b ("net: sched: cls_bpf: call block callbacks for offload") Signed-off-by: Jakub Kicinski Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/bpf/main.c | 12 +--- include/net/pkt_cls.h | 5 +- net/sched/cls_bpf.c | 93 +++++++++++---------------- 3 files changed, 43 insertions(+), 67 deletions(-) (limited to 'include') diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.c b/drivers/net/ethernet/netronome/nfp/bpf/main.c index e379b78e86ef..a4cf62ba4604 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.c @@ -110,16 +110,10 @@ static int nfp_bpf_setup_tc_block_cb(enum tc_setup_type type, return -EOPNOTSUPP; } - switch (cls_bpf->command) { - case TC_CLSBPF_REPLACE: - return nfp_net_bpf_offload(nn, cls_bpf->prog, true); - case TC_CLSBPF_ADD: - return nfp_net_bpf_offload(nn, cls_bpf->prog, false); - case TC_CLSBPF_DESTROY: - return nfp_net_bpf_offload(nn, NULL, true); - default: + if (cls_bpf->command != TC_CLSBPF_OFFLOAD) return -EOPNOTSUPP; - } + + return nfp_net_bpf_offload(nn, cls_bpf->prog, cls_bpf->oldprog); } static int nfp_bpf_setup_tc_block(struct net_device *netdev, diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h index 0105445cab83..8e08b6da72f3 100644 --- a/include/net/pkt_cls.h +++ b/include/net/pkt_cls.h @@ -694,9 +694,7 @@ struct tc_cls_matchall_offload { }; enum tc_clsbpf_command { - TC_CLSBPF_ADD, - TC_CLSBPF_REPLACE, - TC_CLSBPF_DESTROY, + TC_CLSBPF_OFFLOAD, TC_CLSBPF_STATS, }; @@ -705,6 +703,7 @@ struct tc_cls_bpf_offload { enum tc_clsbpf_command command; struct tcf_exts *exts; struct bpf_prog *prog; + struct bpf_prog *oldprog; const char *name; bool exts_integrated; u32 gen_flags; diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c index 6fe798c2df1a..8d78e7f4ecc3 100644 --- a/net/sched/cls_bpf.c +++ b/net/sched/cls_bpf.c @@ -42,7 +42,6 @@ struct cls_bpf_prog { struct list_head link; struct tcf_result res; bool exts_integrated; - bool offloaded; u32 gen_flags; struct tcf_exts exts; u32 handle; @@ -148,33 +147,37 @@ static bool cls_bpf_is_ebpf(const struct cls_bpf_prog *prog) } static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct cls_bpf_prog *prog, - enum tc_clsbpf_command cmd) + struct cls_bpf_prog *oldprog) { - bool addorrep = cmd == TC_CLSBPF_ADD || cmd == TC_CLSBPF_REPLACE; struct tcf_block *block = tp->chain->block; - bool skip_sw = tc_skip_sw(prog->gen_flags); struct tc_cls_bpf_offload cls_bpf = {}; + struct cls_bpf_prog *obj; + bool skip_sw; int err; + skip_sw = prog && tc_skip_sw(prog->gen_flags); + obj = prog ?: oldprog; + tc_cls_common_offload_init(&cls_bpf.common, tp); - cls_bpf.command = cmd; - cls_bpf.exts = &prog->exts; - cls_bpf.prog = prog->filter; - cls_bpf.name = prog->bpf_name; - cls_bpf.exts_integrated = prog->exts_integrated; - cls_bpf.gen_flags = prog->gen_flags; + cls_bpf.command = TC_CLSBPF_OFFLOAD; + cls_bpf.exts = &obj->exts; + cls_bpf.prog = prog ? prog->filter : NULL; + cls_bpf.oldprog = oldprog ? oldprog->filter : NULL; + cls_bpf.name = obj->bpf_name; + cls_bpf.exts_integrated = obj->exts_integrated; + cls_bpf.gen_flags = obj->gen_flags; err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSBPF, &cls_bpf, skip_sw); - if (addorrep) { + if (prog) { if (err < 0) { - cls_bpf_offload_cmd(tp, prog, TC_CLSBPF_DESTROY); + cls_bpf_offload_cmd(tp, oldprog, prog); return err; } else if (err > 0) { prog->gen_flags |= TCA_CLS_FLAGS_IN_HW; } } - if (addorrep && skip_sw && !(prog->gen_flags & TCA_CLS_FLAGS_IN_HW)) + if (prog && skip_sw && !(prog->gen_flags & TCA_CLS_FLAGS_IN_HW)) return -EINVAL; return 0; @@ -183,38 +186,17 @@ static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct cls_bpf_prog *prog, static int cls_bpf_offload(struct tcf_proto *tp, struct cls_bpf_prog *prog, struct cls_bpf_prog *oldprog) { - struct cls_bpf_prog *obj = prog; - enum tc_clsbpf_command cmd; - bool skip_sw; - int ret; - - skip_sw = tc_skip_sw(prog->gen_flags) || - (oldprog && tc_skip_sw(oldprog->gen_flags)); - - if (oldprog && oldprog->offloaded) { - if (!tc_skip_hw(prog->gen_flags)) { - cmd = TC_CLSBPF_REPLACE; - } else if (!tc_skip_sw(prog->gen_flags)) { - obj = oldprog; - cmd = TC_CLSBPF_DESTROY; - } else { - return -EINVAL; - } - } else { - if (tc_skip_hw(prog->gen_flags)) - return skip_sw ? -EINVAL : 0; - cmd = TC_CLSBPF_ADD; - } - - ret = cls_bpf_offload_cmd(tp, obj, cmd); - if (ret) - return ret; + if (prog && oldprog && prog->gen_flags != oldprog->gen_flags) + return -EINVAL; - obj->offloaded = true; - if (oldprog) - oldprog->offloaded = false; + if (prog && tc_skip_hw(prog->gen_flags)) + prog = NULL; + if (oldprog && tc_skip_hw(oldprog->gen_flags)) + oldprog = NULL; + if (!prog && !oldprog) + return 0; - return 0; + return cls_bpf_offload_cmd(tp, prog, oldprog); } static void cls_bpf_stop_offload(struct tcf_proto *tp, @@ -222,25 +204,26 @@ static void cls_bpf_stop_offload(struct tcf_proto *tp, { int err; - if (!prog->offloaded) - return; - - err = cls_bpf_offload_cmd(tp, prog, TC_CLSBPF_DESTROY); - if (err) { + err = cls_bpf_offload_cmd(tp, NULL, prog); + if (err) pr_err("Stopping hardware offload failed: %d\n", err); - return; - } - - prog->offloaded = false; } static void cls_bpf_offload_update_stats(struct tcf_proto *tp, struct cls_bpf_prog *prog) { - if (!prog->offloaded) - return; + struct tcf_block *block = tp->chain->block; + struct tc_cls_bpf_offload cls_bpf = {}; + + tc_cls_common_offload_init(&cls_bpf.common, tp); + cls_bpf.command = TC_CLSBPF_STATS; + cls_bpf.exts = &prog->exts; + cls_bpf.prog = prog->filter; + cls_bpf.name = prog->bpf_name; + cls_bpf.exts_integrated = prog->exts_integrated; + cls_bpf.gen_flags = prog->gen_flags; - cls_bpf_offload_cmd(tp, prog, TC_CLSBPF_STATS); + tc_setup_cb_call(block, NULL, TC_SETUP_CLSBPF, &cls_bpf, false); } static int cls_bpf_init(struct tcf_proto *tp) -- cgit v1.2.3-73-gaa49b From bb7f0f989ca7de1153bd128a40a71709e339fa03 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Mon, 18 Dec 2017 20:12:00 -0800 Subject: bpf: fix integer overflows There were various issues related to the limited size of integers used in the verifier: - `off + size` overflow in __check_map_access() - `off + reg->off` overflow in check_mem_access() - `off + reg->var_off.value` overflow or 32-bit truncation of `reg->var_off.value` in check_mem_access() - 32-bit truncation in check_stack_boundary() Make sure that any integer math cannot overflow by not allowing pointer math with large values. Also reduce the scope of "scalar op scalar" tracking. Fixes: f1174f77b50c ("bpf/verifier: rework value tracking") Reported-by: Jann Horn Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann --- include/linux/bpf_verifier.h | 4 ++-- kernel/bpf/verifier.c | 48 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index c561b986bab0..1632bb13ad8a 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -15,11 +15,11 @@ * In practice this is far bigger than any realistic pointer offset; this limit * ensures that umax_value + (int)off + (int)size cannot overflow a u64. */ -#define BPF_MAX_VAR_OFF (1ULL << 31) +#define BPF_MAX_VAR_OFF (1 << 29) /* Maximum variable size permitted for ARG_CONST_SIZE[_OR_ZERO]. This ensures * that converting umax_value to int cannot overflow. */ -#define BPF_MAX_VAR_SIZ INT_MAX +#define BPF_MAX_VAR_SIZ (1 << 29) /* Liveness marks, used for registers and spilled-regs (in stack slots). * Read marks propagate upwards until they find a write mark; they record that diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 982bd9ec721a..86dfe6b5c243 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -1819,6 +1819,41 @@ static bool signed_sub_overflows(s64 a, s64 b) return res > a; } +static bool check_reg_sane_offset(struct bpf_verifier_env *env, + const struct bpf_reg_state *reg, + enum bpf_reg_type type) +{ + bool known = tnum_is_const(reg->var_off); + s64 val = reg->var_off.value; + s64 smin = reg->smin_value; + + if (known && (val >= BPF_MAX_VAR_OFF || val <= -BPF_MAX_VAR_OFF)) { + verbose(env, "math between %s pointer and %lld is not allowed\n", + reg_type_str[type], val); + return false; + } + + if (reg->off >= BPF_MAX_VAR_OFF || reg->off <= -BPF_MAX_VAR_OFF) { + verbose(env, "%s pointer offset %d is not allowed\n", + reg_type_str[type], reg->off); + return false; + } + + if (smin == S64_MIN) { + verbose(env, "math between %s pointer and register with unbounded min value is not allowed\n", + reg_type_str[type]); + return false; + } + + if (smin >= BPF_MAX_VAR_OFF || smin <= -BPF_MAX_VAR_OFF) { + verbose(env, "value %lld makes %s pointer be out of bounds\n", + smin, reg_type_str[type]); + return false; + } + + return true; +} + /* Handles arithmetic on a pointer and a scalar: computes new min/max and var_off. * Caller should also handle BPF_MOV case separately. * If we return -EACCES, caller may want to try again treating pointer as a @@ -1887,6 +1922,10 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, dst_reg->type = ptr_reg->type; dst_reg->id = ptr_reg->id; + if (!check_reg_sane_offset(env, off_reg, ptr_reg->type) || + !check_reg_sane_offset(env, ptr_reg, ptr_reg->type)) + return -EINVAL; + switch (opcode) { case BPF_ADD: /* We can take a fixed offset as long as it doesn't overflow @@ -2017,6 +2056,9 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, return -EACCES; } + if (!check_reg_sane_offset(env, dst_reg, ptr_reg->type)) + return -EINVAL; + __update_reg_bounds(dst_reg); __reg_deduce_bounds(dst_reg); __reg_bound_offset(dst_reg); @@ -2046,6 +2088,12 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env, src_known = tnum_is_const(src_reg.var_off); dst_known = tnum_is_const(dst_reg->var_off); + if (!src_known && + opcode != BPF_ADD && opcode != BPF_SUB && opcode != BPF_AND) { + __mark_reg_unknown(dst_reg); + return 0; + } + switch (opcode) { case BPF_ADD: if (signed_add_overflows(dst_reg->smin_value, smin_val) || -- cgit v1.2.3-73-gaa49b From 513674b5a2c9c7a67501506419da5c3c77ac6f08 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Wed, 20 Dec 2017 12:10:21 -0800 Subject: net: reevalulate autoflowlabel setting after sysctl setting sysctl.ip6.auto_flowlabels is default 1. In our hosts, we set it to 2. If sockopt doesn't set autoflowlabel, outcome packets from the hosts are supposed to not include flowlabel. This is true for normal packet, but not for reset packet. The reason is ipv6_pinfo.autoflowlabel is set in sock creation. Later if we change sysctl.ip6.auto_flowlabels, the ipv6_pinfo.autoflowlabel isn't changed, so the sock will keep the old behavior in terms of auto flowlabel. Reset packet is suffering from this problem, because reset packet is sent from a special control socket, which is created at boot time. Since sysctl.ipv6.auto_flowlabels is 1 by default, the control socket will always have its ipv6_pinfo.autoflowlabel set, even after user set sysctl.ipv6.auto_flowlabels to 1, so reset packset will always have flowlabel. Normal sock created before sysctl setting suffers from the same issue. We can't even turn off autoflowlabel unless we kill all socks in the hosts. To fix this, if IPV6_AUTOFLOWLABEL sockopt is used, we use the autoflowlabel setting from user, otherwise we always call ip6_default_np_autolabel() which has the new settings of sysctl. Note, this changes behavior a little bit. Before commit 42240901f7c4 (ipv6: Implement different admin modes for automatic flow labels), the autoflowlabel behavior of a sock isn't sticky, eg, if sysctl changes, existing connection will change autoflowlabel behavior. After that commit, autoflowlabel behavior is sticky in the whole life of the sock. With this patch, the behavior isn't sticky again. Cc: Martin KaFai Lau Cc: Eric Dumazet Cc: Tom Herbert Signed-off-by: Shaohua Li Signed-off-by: David S. Miller --- include/linux/ipv6.h | 3 ++- net/ipv6/af_inet6.c | 1 - net/ipv6/ip6_output.c | 12 ++++++++++-- net/ipv6/ipv6_sockglue.c | 1 + 4 files changed, 13 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index cb18c6290ca8..8415bf1a9776 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -273,7 +273,8 @@ struct ipv6_pinfo { * 100: prefer care-of address */ dontfrag:1, - autoflowlabel:1; + autoflowlabel:1, + autoflowlabel_set:1; __u8 min_hopcount; __u8 tclass; __be32 rcv_flowinfo; diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index c26f71234b9c..c9441ca45399 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -210,7 +210,6 @@ lookup_protocol: np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; np->mc_loop = 1; np->pmtudisc = IPV6_PMTUDISC_WANT; - np->autoflowlabel = ip6_default_np_autolabel(net); np->repflow = net->ipv6.sysctl.flowlabel_reflect; sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 5110a418cc4d..f7dd51c42314 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -166,6 +166,14 @@ int ip6_output(struct net *net, struct sock *sk, struct sk_buff *skb) !(IP6CB(skb)->flags & IP6SKB_REROUTED)); } +static bool ip6_autoflowlabel(struct net *net, const struct ipv6_pinfo *np) +{ + if (!np->autoflowlabel_set) + return ip6_default_np_autolabel(net); + else + return np->autoflowlabel; +} + /* * xmit an sk_buff (used by TCP, SCTP and DCCP) * Note : socket lock is not held for SYNACK packets, but might be modified @@ -230,7 +238,7 @@ int ip6_xmit(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, hlimit = ip6_dst_hoplimit(dst); ip6_flow_hdr(hdr, tclass, ip6_make_flowlabel(net, skb, fl6->flowlabel, - np->autoflowlabel, fl6)); + ip6_autoflowlabel(net, np), fl6)); hdr->payload_len = htons(seg_len); hdr->nexthdr = proto; @@ -1626,7 +1634,7 @@ struct sk_buff *__ip6_make_skb(struct sock *sk, ip6_flow_hdr(hdr, v6_cork->tclass, ip6_make_flowlabel(net, skb, fl6->flowlabel, - np->autoflowlabel, fl6)); + ip6_autoflowlabel(net, np), fl6)); hdr->hop_limit = v6_cork->hop_limit; hdr->nexthdr = proto; hdr->saddr = fl6->saddr; diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index b9404feabd78..2d4680e0376f 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -886,6 +886,7 @@ pref_skip_coa: break; case IPV6_AUTOFLOWLABEL: np->autoflowlabel = valbool; + np->autoflowlabel_set = 1; retv = 0; break; case IPV6_RECVFRAGSIZE: -- cgit v1.2.3-73-gaa49b