March 2016 - commits - lists.open-mesh.org

[batman-adv] master: batman-adv: Increase hard_iface refcnt for ptype (feffc04)

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Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit feffc04d3ddcd737eb92d9eb9bda086b9887f434 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat Mar 5 16:09:18 2016 +0100 batman-adv: Increase hard_iface refcnt for ptype The hard_iface is referenced in the packet_type for batman-adv. Increase the refcounter of the hard_interface for it to have an explicit reference for it in case this functionality gets refactorted and the currently used implicit reference for it will be removed. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- feffc04d3ddcd737eb92d9eb9bda086b9887f434 net/batman-adv/hard-interface.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index f41b472..22cc5ec 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -519,6 +519,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, goto err_upper; } + kref_get(&hard_iface->refcount); hard_iface->batman_adv_ptype.type = ethertype; hard_iface->batman_adv_ptype.func = batadv_batman_skb_recv; hard_iface->batman_adv_ptype.dev = hard_iface->net_dev; @@ -580,6 +581,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, batadv_info(hard_iface->soft_iface, "Removing interface: %s\n", hard_iface->net_dev->name); dev_remove_pack(&hard_iface->batman_adv_ptype); + batadv_hardif_put(hard_iface); bat_priv->num_ifaces--; batadv_orig_hash_del_if(hard_iface, bat_priv->num_ifaces);

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[batctl] master: batctl: fix wrong names in kerneldoc (b39caef)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/batctl On branch : master >--------------------------------------------------------------- commit b39caef0c9468502abe96efbf492141b5f145d94 Author: Antonio Quartulli <a(a)unstable.cc> Date: Fri Mar 11 16:36:19 2016 +0100 batctl: fix wrong names in kerneldoc Signed-off-by: Antonio Quartulli <a(a)unstable.cc> [sven(a)narfation.org: Fix additional names] Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- b39caef0c9468502abe96efbf492141b5f145d94 packet.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/packet.h b/packet.h index 8a8d7ca..0796dfd 100644 --- a/packet.h +++ b/packet.h @@ -501,7 +501,7 @@ struct batadv_coded_packet { #pragma pack() /** - * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload + * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload * @packet_type: batman-adv packet type, part of the general header * @version: batman-adv protocol version, part of the genereal header * @ttl: time to live for this packet, part of the genereal header

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[batman-adv] master: batman-adv: fix debuginfo macro style issue (2d34b55)

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Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit 2d34b55ac0cc42be3a60d692f5d70850b7b36294 Author: Simon Wunderlich <simon.wunderlich(a)open-mesh.com> Date: Fri Mar 11 14:01:11 2016 +0100 batman-adv: fix debuginfo macro style issue Structure initialization within the macros should follow the general coding style used in the kernel: put the initialization of the first variable and the closing brace on a separate line. Reported-by: Antonio Quartulli <a(a)unstable.cc> Signed-off-by: Simon Wunderlich <simon.wunderlich(a)open-mesh.com> [sven(a)narfation.org: fix conflicts with current version] Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- 2d34b55ac0cc42be3a60d692f5d70850b7b36294 net/batman-adv/debugfs.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c index 3dc5208..9529004 100644 --- a/net/batman-adv/debugfs.c +++ b/net/batman-adv/debugfs.c @@ -365,14 +365,17 @@ static int batadv_nc_nodes_open(struct inode *inode, struct file *file) #define BATADV_DEBUGINFO(_name, _mode, _open) \ struct batadv_debuginfo batadv_debuginfo_##_name = { \ - .attr = { .name = __stringify(_name), \ - .mode = _mode, }, \ - .fops = { .owner = THIS_MODULE, \ - .open = _open, \ - .read = seq_read, \ - .llseek = seq_lseek, \ - .release = single_release, \ - } \ + .attr = { \ + .name = __stringify(_name), \ + .mode = _mode, \ + }, \ + .fops = { \ + .owner = THIS_MODULE, \ + .open = _open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ + }, \ } /* the following attributes are general and therefore they will be directly

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[batman-adv] master: batman-adv: use batadv_compare_eth when possible (6a1bc0a)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit 6a1bc0abc4eeec05430171e72ec1b783389ec1af Author: Antonio Quartulli <a(a)unstable.cc> Date: Fri Mar 11 14:01:10 2016 +0100 batman-adv: use batadv_compare_eth when possible When comparing Ethernet address it is better to use the more generic batadv_compare_eth. The latter is also optimised for architectures having a fast unaligned access. Signed-off-by: Antonio Quartulli <a(a)unstable.cc> [sven(a)narfation.org: fix conflicts with current version] Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- 6a1bc0abc4eeec05430171e72ec1b783389ec1af net/batman-adv/network-coding.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index c89e812..164f567 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -521,12 +521,10 @@ static bool batadv_nc_hash_compare(const struct hlist_node *node, nc_path2 = data2; /* Return 1 if the two keys are identical */ - if (memcmp(nc_path1->prev_hop, nc_path2->prev_hop, - sizeof(nc_path1->prev_hop)) != 0) + if (!batadv_compare_eth(nc_path1->prev_hop, nc_path2->prev_hop)) return false; - if (memcmp(nc_path1->next_hop, nc_path2->next_hop, - sizeof(nc_path1->next_hop)) != 0) + if (!batadv_compare_eth(nc_path1->next_hop, nc_path2->next_hop)) return false; return true;

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[batman-adv] master: batman-adv: Fix checkpatch warning about 'unsigned' type (89c1f3b)

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Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit 89c1f3b436c3e7108aaf920776b2f8a81a8b8c77 Author: Sven Eckelmann <sven(a)narfation.org> Date: Wed Mar 9 22:22:51 2016 +0100 batman-adv: Fix checkpatch warning about 'unsigned' type checkpatch.pl warns about the use of 'unsigned' as a short form for 'unsigned int'. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- 89c1f3b436c3e7108aaf920776b2f8a81a8b8c77 net/batman-adv/fragmentation.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c index e6956d0..910c841 100644 --- a/net/batman-adv/fragmentation.c +++ b/net/batman-adv/fragmentation.c @@ -407,8 +407,8 @@ static struct sk_buff *batadv_frag_create(struct sk_buff *skb, unsigned int mtu) { struct sk_buff *skb_fragment; - unsigned header_size = sizeof(*frag_head); - unsigned fragment_size = mtu - header_size; + unsigned int header_size = sizeof(*frag_head); + unsigned int fragment_size = mtu - header_size; skb_fragment = netdev_alloc_skb(NULL, mtu + ETH_HLEN); if (!skb_fragment) @@ -444,9 +444,9 @@ bool batadv_frag_send_packet(struct sk_buff *skb, struct batadv_hard_iface *primary_if = NULL; struct batadv_frag_packet frag_header; struct sk_buff *skb_fragment; - unsigned mtu = neigh_node->if_incoming->net_dev->mtu; - unsigned header_size = sizeof(frag_header); - unsigned max_fragment_size, max_packet_size; + unsigned int mtu = neigh_node->if_incoming->net_dev->mtu; + unsigned int header_size = sizeof(frag_header); + unsigned int max_fragment_size, max_packet_size; bool ret = false; /* To avoid merge and refragmentation at next-hops we never send

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[batman-adv] master: batman-adv: use to_delayed_work (ecc6f9a)

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Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit ecc6f9adbce1dd26d9ce5dd0a3614a42f50ea330 Author: Geliang Tang <geliangtang(a)163.com> Date: Mon Dec 28 23:43:37 2015 +0800 batman-adv: use to_delayed_work Use to_delayed_work() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang(a)163.com> Reviewed-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- ecc6f9adbce1dd26d9ce5dd0a3614a42f50ea330 net/batman-adv/bridge_loop_avoidance.c | 2 +- net/batman-adv/distributed-arp-table.c | 2 +- net/batman-adv/network-coding.c | 2 +- net/batman-adv/originator.c | 2 +- net/batman-adv/send.c | 4 ++-- net/batman-adv/translation-table.c | 2 +- 6 files changed, 7 insertions(+), 7 deletions(-) diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 6e97b22..cd63ccd 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1303,7 +1303,7 @@ static void batadv_bla_periodic_work(struct work_struct *work) struct batadv_hard_iface *primary_if; int i; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); priv_bla = container_of(delayed_work, struct batadv_priv_bla, work); bat_priv = container_of(priv_bla, struct batadv_priv, bla); primary_if = batadv_primary_if_get_selected(bat_priv); diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index ab79f3a..52c9ee2 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -152,7 +152,7 @@ static void batadv_dat_purge(struct work_struct *work) struct batadv_priv_dat *priv_dat; struct batadv_priv *bat_priv; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); priv_dat = container_of(delayed_work, struct batadv_priv_dat, work); bat_priv = container_of(priv_dat, struct batadv_priv, dat); diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index dd99e53..c89e812 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -714,7 +714,7 @@ static void batadv_nc_worker(struct work_struct *work) struct batadv_priv *bat_priv; unsigned long timeout; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); priv_nc = container_of(delayed_work, struct batadv_priv_nc, work); bat_priv = container_of(priv_nc, struct batadv_priv, nc); diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 22915bd..275de41 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -1228,7 +1228,7 @@ static void batadv_purge_orig(struct work_struct *work) struct delayed_work *delayed_work; struct batadv_priv *bat_priv; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); _batadv_purge_orig(bat_priv); queue_delayed_work(batadv_event_workqueue, diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 43a950e..2e8433b 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -553,7 +553,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work) struct net_device *soft_iface; struct batadv_priv *bat_priv; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); forw_packet = container_of(delayed_work, struct batadv_forw_packet, delayed_work); soft_iface = forw_packet->if_incoming->soft_iface; @@ -610,7 +610,7 @@ void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work) struct batadv_forw_packet *forw_packet; struct batadv_priv *bat_priv; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); forw_packet = container_of(delayed_work, struct batadv_forw_packet, delayed_work); bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 2ed55f4..ed4b887 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -3228,7 +3228,7 @@ static void batadv_tt_purge(struct work_struct *work) struct batadv_priv_tt *priv_tt; struct batadv_priv *bat_priv; - delayed_work = container_of(work, struct delayed_work, work); + delayed_work = to_delayed_work(work); priv_tt = container_of(delayed_work, struct batadv_priv_tt, work); bat_priv = container_of(priv_tt, struct batadv_priv, tt);

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[batman-adv] master: batman-adv: use list_for_each_entry_safe (1557404)

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Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit 1557404d2ddb631f6efc70dd5cbd47417b57ed26 Author: Geliang Tang <geliangtang(a)163.com> Date: Fri Dec 18 23:33:31 2015 +0800 batman-adv: use list_for_each_entry_safe Use list_for_each_entry_safe() instead of list_for_each_safe() to simplify the code. Signed-off-by: Geliang Tang <geliangtang(a)163.com> Acked-by: Antonio Quartulli <a(a)unstable.cc> Reviewed-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- 1557404d2ddb631f6efc70dd5cbd47417b57ed26 net/batman-adv/icmp_socket.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index df449a0..777aea1 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -104,25 +104,21 @@ static int batadv_socket_open(struct inode *inode, struct file *file) static int batadv_socket_release(struct inode *inode, struct file *file) { - struct batadv_socket_client *socket_client = file->private_data; - struct batadv_socket_packet *socket_packet; - struct list_head *list_pos, *list_pos_tmp; + struct batadv_socket_client *client = file->private_data; + struct batadv_socket_packet *packet, *tmp; - spin_lock_bh(&socket_client->lock); + spin_lock_bh(&client->lock); /* for all packets in the queue ... */ - list_for_each_safe(list_pos, list_pos_tmp, &socket_client->queue_list) { - socket_packet = list_entry(list_pos, - struct batadv_socket_packet, list); - - list_del(list_pos); - kfree(socket_packet); + list_for_each_entry_safe(packet, tmp, &client->queue_list, list) { + list_del(&packet->list); + kfree(packet); } - batadv_socket_client_hash[socket_client->index] = NULL; - spin_unlock_bh(&socket_client->lock); + batadv_socket_client_hash[client->index] = NULL; + spin_unlock_bh(&client->lock); - kfree(socket_client); + kfree(client); module_put(THIS_MODULE); return 0;

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[batman-adv] master: batman-adv: fix wrong names in kerneldoc (a9ef3d7)

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Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit a9ef3d7c5ed7f5fd99fa1662ac77e780c119b31d Author: Antonio Quartulli <a(a)unstable.cc> Date: Fri Mar 11 16:36:19 2016 +0100 batman-adv: fix wrong names in kerneldoc Signed-off-by: Antonio Quartulli <a(a)unstable.cc> [sven(a)narfation.org: Fix additional names] Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- a9ef3d7c5ed7f5fd99fa1662ac77e780c119b31d net/batman-adv/bridge_loop_avoidance.c | 2 +- net/batman-adv/distributed-arp-table.c | 2 +- net/batman-adv/icmp_socket.c | 2 +- net/batman-adv/main.h | 3 ++- net/batman-adv/multicast.c | 11 ++++++----- net/batman-adv/originator.c | 2 +- net/batman-adv/packet.h | 2 +- net/batman-adv/soft-interface.c | 2 +- 8 files changed, 14 insertions(+), 12 deletions(-) diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 943f9e2..6e97b22 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1576,7 +1576,7 @@ bool batadv_bla_is_backbone_gw(struct sk_buff *skb, } /** - * batadv_bla_init - free all bla structures + * batadv_bla_free - free all bla structures * @bat_priv: the bat priv with all the soft interface information * * for softinterface free or module unload diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 919a8d2..ab79f3a 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -717,7 +717,7 @@ void batadv_dat_status_update(struct net_device *net_dev) } /** - * batadv_gw_tvlv_ogm_handler_v1 - process incoming dat tvlv container + * batadv_dat_tvlv_ogm_handler_v1 - process incoming dat tvlv container * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index 14d0013..df449a0 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -337,7 +337,7 @@ err: } /** - * batadv_socket_receive_packet - schedule an icmp packet to be sent to + * batadv_socket_add_packet - schedule an icmp packet to be sent to * userspace on an icmp socket. * @socket_client: the socket this packet belongs to * @icmph: pointer to the header of the icmp packet diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index e602408..1565df0 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -296,7 +296,8 @@ static inline bool batadv_compare_eth(const void *data1, const void *data2) } /** - * has_timed_out - compares current time (jiffies) and timestamp + timeout + * batadv_has_timed_out - compares current time (jiffies) and timestamp + + * timeout * @timestamp: base value to compare with (in jiffies) * @timeout: added to base value before comparing (in milliseconds) * diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index 8caa2c7..c32f24f 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -394,7 +394,8 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv, } /** - * batadv_mcast_want_all_ip_count - count nodes with unspecific mcast interest + * batadv_mcast_forw_want_all_ip_count - count nodes with unspecific mcast + * interest * @bat_priv: the bat priv with all the soft interface information * @ethhdr: ethernet header of a packet * @@ -433,7 +434,7 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv, } /** - * batadv_mcast_want_forw_ipv4_node_get - get a node with an ipv4 flag + * batadv_mcast_forw_ipv4_node_get - get a node with an ipv4 flag * @bat_priv: the bat priv with all the soft interface information * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 flag set and @@ -460,7 +461,7 @@ batadv_mcast_forw_ipv4_node_get(struct batadv_priv *bat_priv) } /** - * batadv_mcast_want_forw_ipv6_node_get - get a node with an ipv6 flag + * batadv_mcast_forw_ipv6_node_get - get a node with an ipv6 flag * @bat_priv: the bat priv with all the soft interface information * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV6 flag set @@ -487,7 +488,7 @@ batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv) } /** - * batadv_mcast_want_forw_ip_node_get - get a node with an ipv4/ipv6 flag + * batadv_mcast_forw_ip_node_get - get a node with an ipv4/ipv6 flag * @bat_priv: the bat priv with all the soft interface information * @ethhdr: an ethernet header to determine the protocol family from * @@ -511,7 +512,7 @@ batadv_mcast_forw_ip_node_get(struct batadv_priv *bat_priv, } /** - * batadv_mcast_want_forw_unsnoop_node_get - get a node with an unsnoopable flag + * batadv_mcast_forw_unsnoop_node_get - get a node with an unsnoopable flag * @bat_priv: the bat priv with all the soft interface information * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index edc3c63..22915bd 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -289,7 +289,7 @@ void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) } /** - * batadv_orig_node_get_router - router to the originator depending on iface + * batadv_orig_router_get - router to the originator depending on iface * @orig_node: the orig node for the router * @if_outgoing: the interface where the payload packet has been received or * the OGM should be sent to diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index 8a8d7ca..0796dfd 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -501,7 +501,7 @@ struct batadv_coded_packet { #pragma pack() /** - * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload + * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload * @packet_type: batman-adv packet type, part of the general header * @version: batman-adv protocol version, part of the genereal header * @ttl: time to live for this packet, part of the genereal header diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 4667719..674f24b 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -556,7 +556,7 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, } /** - * batadv_create_vlan - allocate the needed resources for a new vlan + * batadv_softif_create_vlan - allocate the needed resources for a new vlan * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier *

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[batman-adv] master: batman-adv: Check hard_iface refcnt when receiving skb (fee73a8)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit fee73a8578d308fb70186b99e936e4be0d5870f8 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat Mar 5 16:09:17 2016 +0100 batman-adv: Check hard_iface refcnt when receiving skb The receive function may start processing an incoming packet while the hard_iface is shut down in a different context. All called functions called with the batadv_hard_iface object belonging to the incoming interface would have to check whether the reference counter is still > 0. This is rather error-prone because this check can be forgotten easily. Instead check the reference counter when receiving the object to make sure that all called functions have a valid reference. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- fee73a8578d308fb70186b99e936e4be0d5870f8 net/batman-adv/main.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 78c05a9..c8d8bc7 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -401,11 +401,19 @@ int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, hard_iface = container_of(ptype, struct batadv_hard_iface, batman_adv_ptype); + + /* Prevent processing a packet received on an interface which is getting + * shut down otherwise the packet may trigger de-reference errors + * further down in the receive path. + */ + if (!kref_get_unless_zero(&hard_iface->refcount)) + goto err_out; + skb = skb_share_check(skb, GFP_ATOMIC); /* skb was released by skb_share_check() */ if (!skb) - goto err_out; + goto err_put; /* packet should hold at least type and version */ if (unlikely(!pskb_may_pull(skb, 2))) @@ -448,6 +456,8 @@ int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, if (ret == NET_RX_DROP) kfree_skb(skb); + batadv_hardif_put(hard_iface); + /* return NET_RX_SUCCESS in any case as we * most probably dropped the packet for * routing-logical reasons. @@ -456,6 +466,8 @@ int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, err_free: kfree_skb(skb); +err_put: + batadv_hardif_put(hard_iface); err_out: return NET_RX_DROP; }

5 years, 8 months

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[batman-adv] master: batman-adv: Check hard_iface refcnt before calling function (bd2dcf5)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/batman-adv On branch : master >--------------------------------------------------------------- commit bd2dcf52ce295b2e8d7448546539f0e96b8ecdcc Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat Mar 5 16:09:16 2016 +0100 batman-adv: Check hard_iface refcnt before calling function The batadv_hardif_list list is checked in many situations and the items in this list are given to specialized functions to modify the routing behavior. At the moment each of these called functions has to check itself whether the received batadv_hard_iface has a refcount > 0 before it can increase the reference counter and use it in other objects. This can easily lead to problems because it is not easily visible where all callers of a function got the batadv_hard_iface object from and whether they already hold a valid reference. Checking the reference counter directly before calling a subfunction with a pointer from the batadv_hardif_list avoids this problem. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> >--------------------------------------------------------------- bd2dcf52ce295b2e8d7448546539f0e96b8ecdcc net/batman-adv/bat_iv_ogm.c | 11 +++++++++++ net/batman-adv/bat_v_ogm.c | 14 +++++++++++++- net/batman-adv/originator.c | 5 +++++ net/batman-adv/send.c | 6 ++++++ 4 files changed, 35 insertions(+), 1 deletion(-) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 2c65668..b390ff9 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -985,9 +985,15 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) list_for_each_entry_rcu(tmp_hard_iface, &batadv_hardif_list, list) { if (tmp_hard_iface->soft_iface != hard_iface->soft_iface) continue; + + if (!kref_get_unless_zero(&tmp_hard_iface->refcount)) + continue; + batadv_iv_ogm_queue_add(bat_priv, *ogm_buff, *ogm_buff_len, hard_iface, tmp_hard_iface, 1, send_time); + + batadv_hardif_put(tmp_hard_iface); } rcu_read_unlock(); @@ -1767,8 +1773,13 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, if (hard_iface->soft_iface != bat_priv->soft_iface) continue; + if (!kref_get_unless_zero(&hard_iface->refcount)) + continue; + batadv_iv_ogm_process_per_outif(skb, ogm_offset, orig_node, if_incoming, hard_iface); + + batadv_hardif_put(hard_iface); } rcu_read_unlock(); diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c index 4155fa5..473ebb9 100644 --- a/net/batman-adv/bat_v_ogm.c +++ b/net/batman-adv/bat_v_ogm.c @@ -26,6 +26,7 @@ #include <linux/if_ether.h> #include <linux/jiffies.h> #include <linux/kernel.h> +#include <linux/kref.h> #include <linux/list.h> #include <linux/netdevice.h> #include <linux/random.h> @@ -176,6 +177,9 @@ static void batadv_v_ogm_send(struct work_struct *work) if (hard_iface->soft_iface != bat_priv->soft_iface) continue; + if (!kref_get_unless_zero(&hard_iface->refcount)) + continue; + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Sending own OGM2 packet (originator %pM, seqno %u, throughput %u, TTL %d) on interface %s [%pM]\n", ogm_packet->orig, ntohl(ogm_packet->seqno), @@ -185,10 +189,13 @@ static void batadv_v_ogm_send(struct work_struct *work) /* this skb gets consumed by batadv_v_ogm_send_to_if() */ skb_tmp = skb_clone(skb, GFP_ATOMIC); - if (!skb_tmp) + if (!skb_tmp) { + batadv_hardif_put(hard_iface); break; + } batadv_v_ogm_send_to_if(skb_tmp, hard_iface); + batadv_hardif_put(hard_iface); } rcu_read_unlock(); @@ -704,9 +711,14 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, if (hard_iface->soft_iface != bat_priv->soft_iface) continue; + if (!kref_get_unless_zero(&hard_iface->refcount)) + continue; + batadv_v_ogm_process_per_outif(bat_priv, ethhdr, ogm_packet, orig_node, neigh_node, if_incoming, hard_iface); + + batadv_hardif_put(hard_iface); } rcu_read_unlock(); out: diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 3ca98fc..edc3c63 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -1166,6 +1166,9 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, if (hard_iface->soft_iface != bat_priv->soft_iface) continue; + if (!kref_get_unless_zero(&hard_iface->refcount)) + continue; + best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, hard_iface); @@ -1173,6 +1176,8 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, best_neigh_node); if (best_neigh_node) batadv_neigh_node_put(best_neigh_node); + + batadv_hardif_put(hard_iface); } rcu_read_unlock(); diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 3ce06e0..43a950e 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -26,6 +26,7 @@ #include <linux/if.h> #include <linux/jiffies.h> #include <linux/kernel.h> +#include <linux/kref.h> #include <linux/list.h> #include <linux/netdevice.h> #include <linux/printk.h> @@ -577,10 +578,15 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work) if (forw_packet->num_packets >= hard_iface->num_bcasts) continue; + if (!kref_get_unless_zero(&hard_iface->refcount)) + continue; + /* send a copy of the saved skb */ skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC); if (skb1) batadv_send_broadcast_skb(skb1, hard_iface); + + batadv_hardif_put(hard_iface); } rcu_read_unlock();

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commits March 2016