diff options
Diffstat (limited to 'net/core/sysctl_net_core.c')
| -rw-r--r-- | net/core/sysctl_net_core.c | 67 |
1 files changed, 39 insertions, 28 deletions
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index cb8d32e5c14e..8d4decb2606f 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -28,12 +28,14 @@ #include <net/rps.h> #include "dev.h" +#include "net-sysfs.h" static int int_3600 = 3600; static int min_sndbuf = SOCK_MIN_SNDBUF; static int min_rcvbuf = SOCK_MIN_RCVBUF; static int max_skb_frags = MAX_SKB_FRAGS; static int min_mem_pcpu_rsv = SK_MEMORY_PCPU_RESERVE; +static int netdev_budget_usecs_min = 2 * USEC_PER_SEC / HZ; static int net_msg_warn; /* Unused, but still a sysctl */ @@ -95,50 +97,40 @@ free_buf: #ifdef CONFIG_RPS -static struct cpumask *rps_default_mask_cow_alloc(struct net *net) -{ - struct cpumask *rps_default_mask; - - if (net->core.rps_default_mask) - return net->core.rps_default_mask; - - rps_default_mask = kzalloc(cpumask_size(), GFP_KERNEL); - if (!rps_default_mask) - return NULL; - - /* pairs with READ_ONCE in rx_queue_default_mask() */ - WRITE_ONCE(net->core.rps_default_mask, rps_default_mask); - return rps_default_mask; -} +DEFINE_MUTEX(rps_default_mask_mutex); static int rps_default_mask_sysctl(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = (struct net *)table->data; + struct cpumask *mask; int err = 0; - rtnl_lock(); + mutex_lock(&rps_default_mask_mutex); + mask = net->core.rps_default_mask; if (write) { - struct cpumask *rps_default_mask = rps_default_mask_cow_alloc(net); - + if (!mask) { + mask = kzalloc(cpumask_size(), GFP_KERNEL); + net->core.rps_default_mask = mask; + } err = -ENOMEM; - if (!rps_default_mask) + if (!mask) goto done; - err = cpumask_parse(buffer, rps_default_mask); + err = cpumask_parse(buffer, mask); if (err) goto done; - err = rps_cpumask_housekeeping(rps_default_mask); + err = rps_cpumask_housekeeping(mask); if (err) goto done; } else { err = dump_cpumask(buffer, lenp, ppos, - net->core.rps_default_mask ? : cpu_none_mask); + mask ?: cpu_none_mask); } done: - rtnl_unlock(); + mutex_unlock(&rps_default_mask_mutex); return err; } @@ -200,7 +192,7 @@ static int rps_sock_flow_sysctl(const struct ctl_table *table, int write, if (orig_sock_table) { static_branch_dec(&rps_needed); static_branch_dec(&rfs_needed); - kvfree_rcu_mightsleep(orig_sock_table); + kvfree_rcu(orig_sock_table, rcu); } } } @@ -238,7 +230,7 @@ static int flow_limit_cpu_sysctl(const struct ctl_table *table, int write, lockdep_is_held(&flow_limit_update_mutex)); if (cur && !cpumask_test_cpu(i, mask)) { RCU_INIT_POINTER(sd->flow_limit, NULL); - kfree_rcu_mightsleep(cur); + kfree_rcu(cur, rcu); } else if (!cur && cpumask_test_cpu(i, mask)) { cur = kzalloc_node(len, GFP_KERNEL, cpu_to_node(i)); @@ -247,7 +239,7 @@ static int flow_limit_cpu_sysctl(const struct ctl_table *table, int write, ret = -ENOMEM; goto write_unlock; } - cur->num_buckets = netdev_flow_limit_table_len; + cur->log_buckets = ilog2(netdev_flow_limit_table_len); rcu_assign_pointer(sd->flow_limit, cur); } } @@ -319,7 +311,7 @@ static int proc_do_dev_weight(const struct ctl_table *table, int write, int ret, weight; mutex_lock(&dev_weight_mutex); - ret = proc_dointvec(table, write, buffer, lenp, ppos); + ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); if (!ret && write) { weight = READ_ONCE(weight_p); WRITE_ONCE(net_hotdata.dev_rx_weight, weight * dev_weight_rx_bias); @@ -412,6 +404,7 @@ static struct ctl_table net_core_table[] = { .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_do_dev_weight, + .extra1 = SYSCTL_ONE, }, { .procname = "dev_weight_rx_bias", @@ -419,6 +412,7 @@ static struct ctl_table net_core_table[] = { .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_do_dev_weight, + .extra1 = SYSCTL_ONE, }, { .procname = "dev_weight_tx_bias", @@ -426,6 +420,7 @@ static struct ctl_table net_core_table[] = { .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_do_dev_weight, + .extra1 = SYSCTL_ONE, }, { .procname = "netdev_max_backlog", @@ -584,7 +579,7 @@ static struct ctl_table net_core_table[] = { .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, + .extra1 = &netdev_budget_usecs_min, }, { .procname = "fb_tunnels_only_for_init_net", @@ -673,6 +668,13 @@ static struct ctl_table netns_core_table[] = { .proc_handler = proc_dou8vec_minmax, }, { + .procname = "txq_reselection_ms", + .data = &init_net.core.sysctl_txq_reselection, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_ms_jiffies, + }, + { .procname = "tstamp_allow_data", .data = &init_net.core.sysctl_tstamp_allow_data, .maxlen = sizeof(u8), @@ -681,6 +683,15 @@ static struct ctl_table netns_core_table[] = { .extra1 = SYSCTL_ZERO, .extra2 = SYSCTL_ONE }, + { + .procname = "bypass_prot_mem", + .data = &init_net.core.sysctl_bypass_prot_mem, + .maxlen = sizeof(u8), + .mode = 0644, + .proc_handler = proc_dou8vec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE + }, /* sysctl_core_net_init() will set the values after this * to readonly in network namespaces */ |