diff options
| -rw-r--r-- | net/hsr/Makefile | 1 | ||||
| -rw-r--r-- | net/hsr/hsr_device.c | 5 | ||||
| -rw-r--r-- | net/hsr/hsr_framereg.c | 12 | ||||
| -rw-r--r-- | net/hsr/hsr_framereg.h | 12 | ||||
| -rw-r--r-- | net/hsr/hsr_main.h | 17 | ||||
| -rw-r--r-- | net/hsr/hsr_prp_debugfs.c | 120 |
6 files changed, 155 insertions, 12 deletions
diff --git a/net/hsr/Makefile b/net/hsr/Makefile index 9ae972a820f4..d74d89d013b0 100644 --- a/net/hsr/Makefile +++ b/net/hsr/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_HSR) += hsr.o hsr-y := hsr_main.o hsr_framereg.o hsr_device.o \ hsr_netlink.o hsr_slave.o hsr_forward.o +hsr-$(CONFIG_DEBUG_FS) += hsr_prp_debugfs.o diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c index bb7bf2002040..b47a621e3f4e 100644 --- a/net/hsr/hsr_device.c +++ b/net/hsr/hsr_device.c @@ -354,6 +354,8 @@ static void hsr_dev_destroy(struct net_device *hsr_dev) hsr = netdev_priv(hsr_dev); + hsr_prp_debugfs_term(hsr); + rtnl_lock(); hsr_for_each_port(hsr, port) hsr_del_port(port); @@ -483,6 +485,9 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2], goto fail; mod_timer(&hsr->prune_timer, jiffies + msecs_to_jiffies(PRUNE_PERIOD)); + res = hsr_prp_debugfs_init(hsr); + if (res) + goto fail; return 0; diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c index 22203562821f..a3cc30ac8a5a 100644 --- a/net/hsr/hsr_framereg.c +++ b/net/hsr/hsr_framereg.c @@ -18,18 +18,6 @@ #include "hsr_framereg.h" #include "hsr_netlink.h" -struct hsr_node { - struct list_head mac_list; - unsigned char macaddress_A[ETH_ALEN]; - unsigned char macaddress_B[ETH_ALEN]; - /* Local slave through which AddrB frames are received from this node */ - enum hsr_port_type addr_B_port; - unsigned long time_in[HSR_PT_PORTS]; - bool time_in_stale[HSR_PT_PORTS]; - u16 seq_out[HSR_PT_PORTS]; - struct rcu_head rcu_head; -}; - /* TODO: use hash lists for mac addresses (linux/jhash.h)? */ /* seq_nr_after(a, b) - return true if a is after (higher in sequence than) b, diff --git a/net/hsr/hsr_framereg.h b/net/hsr/hsr_framereg.h index 5f515d4cd088..a3bdcdab469d 100644 --- a/net/hsr/hsr_framereg.h +++ b/net/hsr/hsr_framereg.h @@ -48,4 +48,16 @@ int hsr_get_node_data(struct hsr_priv *hsr, int *if2_age, u16 *if2_seq); +struct hsr_node { + struct list_head mac_list; + unsigned char macaddress_A[ETH_ALEN]; + unsigned char macaddress_B[ETH_ALEN]; + /* Local slave through which AddrB frames are received from this node */ + enum hsr_port_type addr_B_port; + unsigned long time_in[HSR_PT_PORTS]; + bool time_in_stale[HSR_PT_PORTS]; + u16 seq_out[HSR_PT_PORTS]; + struct rcu_head rcu_head; +}; + #endif /* __HSR_FRAMEREG_H */ diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h index 1e49675ca186..778213f07fe0 100644 --- a/net/hsr/hsr_main.h +++ b/net/hsr/hsr_main.h @@ -163,6 +163,10 @@ struct hsr_priv { u8 prot_version; /* Indicate if HSRv0 or HSRv1. */ spinlock_t seqnr_lock; /* locking for sequence_nr */ unsigned char sup_multicast_addr[ETH_ALEN]; +#ifdef CONFIG_DEBUG_FS + struct dentry *node_tbl_root; + struct dentry *node_tbl_file; +#endif }; #define hsr_for_each_port(hsr, port) \ @@ -179,4 +183,17 @@ static inline u16 hsr_get_skb_sequence_nr(struct sk_buff *skb) return ntohs(hsr_ethhdr->hsr_tag.sequence_nr); } +#if IS_ENABLED(CONFIG_DEBUG_FS) +int hsr_prp_debugfs_init(struct hsr_priv *priv); +void hsr_prp_debugfs_term(struct hsr_priv *priv); +#else +static inline int hsr_prp_debugfs_init(struct hsr_priv *priv) +{ + return 0; +} + +static inline void hsr_prp_debugfs_term(struct hsr_priv *priv) +{} +#endif + #endif /* __HSR_PRIVATE_H */ diff --git a/net/hsr/hsr_prp_debugfs.c b/net/hsr/hsr_prp_debugfs.c new file mode 100644 index 000000000000..b30e98734c61 --- /dev/null +++ b/net/hsr/hsr_prp_debugfs.c @@ -0,0 +1,120 @@ +/* + * hsr_prp_debugfs code + * Copyright (C) 2017 Texas Instruments Incorporated + * + * Author(s): + * Murali Karicheri <m-karicheri2@ti.com? + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/debugfs.h> +#include "hsr_main.h" +#include "hsr_framereg.h" + +static void print_mac_address(struct seq_file *sfp, unsigned char *mac) +{ + seq_printf(sfp, "%02x:%02x:%02x:%02x:%02x:%02x:", + mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); +} + +/* hsr_prp_node_table_show - Formats and prints node_table entries */ +static int +hsr_prp_node_table_show(struct seq_file *sfp, void *data) +{ + struct hsr_priv *priv = (struct hsr_priv *)sfp->private; + struct hsr_node *node; + + seq_puts(sfp, "Node Table entries\n"); + seq_puts(sfp, "MAC-Address-A, MAC-Address-B, time_in[A], "); + seq_puts(sfp, "time_in[B], Address-B port\n"); + rcu_read_lock(); + list_for_each_entry_rcu(node, &priv->node_db, mac_list) { + /* skip self node */ + if (hsr_addr_is_self(priv, node->macaddress_A)) + continue; + print_mac_address(sfp, &node->macaddress_A[0]); + seq_puts(sfp, " "); + print_mac_address(sfp, &node->macaddress_B[0]); + seq_printf(sfp, "0x%lx, ", node->time_in[HSR_PT_SLAVE_A]); + seq_printf(sfp, "0x%lx ", node->time_in[HSR_PT_SLAVE_B]); + seq_printf(sfp, "0x%x\n", node->addr_B_port); + } + rcu_read_unlock(); + return 0; +} + +/* hsr_prp_node_table_open - Open the node_table file + * + * Description: + * This routine opens a debugfs file node_table of specific hsr device + */ +static int +hsr_prp_node_table_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, hsr_prp_node_table_show, inode->i_private); +} + +static const struct file_operations hsr_prp_fops = { + .owner = THIS_MODULE, + .open = hsr_prp_node_table_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* hsr_prp_debugfs_init - create hsr-prp node_table file for dumping + * the node table + * + * Description: + * When debugfs is configured this routine sets up the node_table file per + * hsr/prp device for dumping the node_table entries + */ +int hsr_prp_debugfs_init(struct hsr_priv *priv) +{ + int rc = -1; + struct dentry *de = NULL; + + de = debugfs_create_dir("hsr", NULL); + if (!de) { + pr_err("Cannot create hsr-prp debugfs root\n"); + return rc; + } + + priv->node_tbl_root = de; + + de = debugfs_create_file("node_table", S_IFREG | 0444, + priv->node_tbl_root, priv, + &hsr_prp_fops); + if (!de) { + pr_err("Cannot create hsr-prp node_table directory\n"); + return rc; + } + priv->node_tbl_file = de; + rc = 0; + + return rc; +} + +/* hsr_prp_debugfs_term - Tear down debugfs intrastructure + * + * Description: + * When Debufs is configured this routine removes debugfs file system + * elements that are specific to hsr-prp + */ +void +hsr_prp_debugfs_term(struct hsr_priv *priv) +{ + debugfs_remove(priv->node_tbl_file); + priv->node_tbl_file = NULL; + debugfs_remove(priv->node_tbl_root); + priv->node_tbl_root = NULL; +} |