[B.A.T.M.A.N.] [PATCH 5/8] batman-adv: handle routing code initialization properly
From: Marek Lindner <hidden>
Date: 2012-02-07 09:20:48
Subsystem:
the rest · Maintainer:
Linus Torvalds
Signed-off-by: Marek Lindner <redacted> --- bat_iv_ogm.c | 11 ++++++++++- hard-interface.c | 14 ++++++-------- types.h | 2 +- 3 files changed, 17 insertions(+), 10 deletions(-)
diff --git a/bat_iv_ogm.c b/bat_iv_ogm.c
index 98c41f5..d944a0b 100644
--- a/bat_iv_ogm.c
+++ b/bat_iv_ogm.c@@ -30,10 +30,11 @@ #include "send.h" #include "bat_algo.h" -static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface) +static int bat_iv_ogm_iface_enable(struct hard_iface *hard_iface) { struct batman_ogm_packet *batman_ogm_packet; unsigned long random_seqno; + int res = -1; /* randomize initial seqno to avoid collision */ get_random_bytes(&random_seqno, sizeof(unsigned long));
@@ -42,6 +43,9 @@ static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface) hard_iface->packet_len = BATMAN_OGM_LEN; hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC); + if (!hard_iface->packet_buff) + goto out; + batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff; batman_ogm_packet->header.packet_type = BAT_OGM; batman_ogm_packet->header.version = COMPAT_VERSION;
@@ -50,6 +54,11 @@ static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface) batman_ogm_packet->tq = TQ_MAX_VALUE; batman_ogm_packet->tt_num_changes = 0; batman_ogm_packet->ttvn = 0; + + res = 0; + +out: + return res; } static void bat_iv_ogm_iface_disable(struct hard_iface *hard_iface)
diff --git a/hard-interface.c b/hard-interface.c
index ec2f478..d6b25e0 100644
--- a/hard-interface.c
+++ b/hard-interface.c@@ -310,21 +310,17 @@ int hardif_enable_interface(struct hard_iface *hard_iface, pr_err("Can't create batman mesh interface %s: " "already exists as regular interface\n", soft_iface->name); - dev_put(soft_iface); ret = -EINVAL; - goto err; + goto err_dev; } hard_iface->soft_iface = soft_iface; bat_priv = netdev_priv(hard_iface->soft_iface); - bat_priv->bat_algo_ops->bat_iface_enable(hard_iface); - - if (!hard_iface->packet_buff) { - bat_err(hard_iface->soft_iface, "Can't add interface packet " - "(%s): out of memory\n", hard_iface->net_dev->name); + ret = bat_priv->bat_algo_ops->bat_iface_enable(hard_iface); + if (ret < 0) { ret = -ENOMEM; - goto err; + goto err_dev; } hard_iface->if_num = bat_priv->num_ifaces;
@@ -375,6 +371,8 @@ int hardif_enable_interface(struct hard_iface *hard_iface, out: return 0; +err_dev: + dev_put(soft_iface); err: hardif_free_ref(hard_iface); return ret;
diff --git a/types.h b/types.h
index 5e8de0e..3df38df 100644
--- a/types.h
+++ b/types.h@@ -370,7 +370,7 @@ struct bat_algo_ops { struct hlist_node list; char *name; /* init routing info when hard-interface is enabled */ - void (*bat_iface_enable)(struct hard_iface *hard_iface); + int (*bat_iface_enable)(struct hard_iface *hard_iface); /* de-init routing info when hard-interface is disabled */ void (*bat_iface_disable)(struct hard_iface *hard_iface); /* init primary OGM when primary interface is selected */
--
1.7.5.4