commits February 2011

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batman-adv; branch, next, updated. v2011.0.0-8-g881efd5
by postmaster＠open-mesh.org 14 Feb '11

14 Feb '11

The following commit has been merged in the next branch: commit 881efd508c3e6dca3a41683bb8cf243bf879c1af Author: Jesper Juhl <jj(a)chaosbits.net> Date: Mon Feb 14 23:38:18 2011 +0100 batman-adv: Remove two duplicate includes. Remove duplicate inclusion of "send.h" and "routing.h" from soft-interface.c Signed-off-by: Jesper Juhl <jj(a)chaosbits.net> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/soft-interface.c b/soft-interface.c index bd088f8..7e37077 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -29,14 +29,12 @@ #include "hash.h" #include "gateway_common.h" #include "gateway_client.h" -#include "send.h" #include "bat_sysfs.h" #include <linux/slab.h> #include <linux/ethtool.h> #include <linux/etherdevice.h> #include <linux/if_vlan.h> #include "unicast.h" -#include "routing.h" static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); -- batman-adv

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batman-adv; branch, master, updated. v2011.0.0-51-gce49b06
by postmaster＠open-mesh.org 14 Feb '11

14 Feb '11

The following commit has been merged in the master branch: commit ce49b062b7937787059943006013ee42e469e57b Author: Sven Eckelmann <sven(a)narfation.org> Date: Mon Feb 14 12:56:39 2011 +0000 batman-adv: else should follow close brace '}' Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/gateway_client.c b/gateway_client.c index 3486854..41eba8a 100644 --- a/gateway_client.c +++ b/gateway_client.c @@ -123,8 +123,7 @@ void gw_election(struct bat_priv *bat_priv) "Removing selected gateway - " "no gateway in range\n"); gw_deselect(bat_priv); - } - else + } else rcu_read_unlock(); return; -- batman-adv

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batman-adv; branch, master, updated. v2011.0.0-50-g75444f5
by postmaster＠open-mesh.org 13 Feb '11

13 Feb '11

The following commit has been merged in the master branch: commit 2087bcf0cf98b6ecd8492e9e4c182d7c22473258 Author: Linus Lüssing <linus.luessing(a)ascom.ch> Date: Sun Feb 13 21:13:02 2011 +0000 batman-adv: Make bat_priv->curr_gw an rcu protected pointer The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the bat_priv->curr_gw need to be used, as well as spin/rcu locking. Otherwise we might end up using a curr_gw pointer pointing to already freed memory. Reported-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Linus Lüssing <linus.luessing(a)ascom.ch> diff --git a/gateway_client.c b/gateway_client.c index 517e001..4f0753f 100644 --- a/gateway_client.c +++ b/gateway_client.c @@ -44,19 +44,29 @@ static void gw_node_free_ref(struct gw_node *gw_node) void *gw_get_selected(struct bat_priv *bat_priv) { - struct gw_node *curr_gateway_tmp = bat_priv->curr_gw; + struct gw_node *curr_gateway_tmp; + struct orig_node *orig_node = NULL; + rcu_read_lock(); + curr_gateway_tmp = rcu_dereference(bat_priv->curr_gw); if (!curr_gateway_tmp) - return NULL; + goto out; + + orig_node = curr_gateway_tmp->orig_node; - return curr_gateway_tmp->orig_node; +out: + rcu_read_unlock(); + return orig_node; } void gw_deselect(struct bat_priv *bat_priv) { - struct gw_node *gw_node = bat_priv->curr_gw; + struct gw_node *gw_node; - bat_priv->curr_gw = NULL; + spin_lock_bh(&bat_priv->gw_list_lock); + gw_node = rcu_dereference(bat_priv->curr_gw); + rcu_assign_pointer(bat_priv->curr_gw, NULL); + spin_unlock_bh(&bat_priv->gw_list_lock); if (gw_node) gw_node_free_ref(gw_node); @@ -64,12 +74,15 @@ void gw_deselect(struct bat_priv *bat_priv) static void gw_select(struct bat_priv *bat_priv, struct gw_node *new_gw_node) { - struct gw_node *curr_gw_node = bat_priv->curr_gw; + struct gw_node *curr_gw_node; if (new_gw_node && !atomic_inc_not_zero(&new_gw_node->refcount)) new_gw_node = NULL; - bat_priv->curr_gw = new_gw_node; + spin_lock_bh(&bat_priv->gw_list_lock); + curr_gw_node = rcu_dereference(bat_priv->curr_gw); + rcu_assign_pointer(bat_priv->curr_gw, new_gw_node); + spin_unlock_bh(&bat_priv->gw_list_lock); if (curr_gw_node) gw_node_free_ref(curr_gw_node); @@ -78,7 +91,7 @@ static void gw_select(struct bat_priv *bat_priv, struct gw_node *new_gw_node) void gw_election(struct bat_priv *bat_priv) { struct hlist_node *node; - struct gw_node *gw_node, *curr_gw_tmp = NULL; + struct gw_node *gw_node, *curr_gw, *curr_gw_tmp = NULL; uint8_t max_tq = 0; uint32_t max_gw_factor = 0, tmp_gw_factor = 0; int down, up; @@ -92,19 +105,24 @@ void gw_election(struct bat_priv *bat_priv) if (atomic_read(&bat_priv->gw_mode) != GW_MODE_CLIENT) return; - if (bat_priv->curr_gw) + rcu_read_lock(); + curr_gw = rcu_dereference(bat_priv->curr_gw); + if (curr_gw) { + rcu_read_unlock(); return; + } - rcu_read_lock(); if (hlist_empty(&bat_priv->gw_list)) { - rcu_read_unlock(); - if (bat_priv->curr_gw) { + if (curr_gw) { + rcu_read_unlock(); bat_dbg(DBG_BATMAN, bat_priv, "Removing selected gateway - " "no gateway in range\n"); gw_deselect(bat_priv); } + else + rcu_read_unlock(); return; } @@ -153,12 +171,12 @@ void gw_election(struct bat_priv *bat_priv) max_gw_factor = tmp_gw_factor; } - if (bat_priv->curr_gw != curr_gw_tmp) { - if ((bat_priv->curr_gw) && (!curr_gw_tmp)) + if (curr_gw != curr_gw_tmp) { + if ((curr_gw) && (!curr_gw_tmp)) bat_dbg(DBG_BATMAN, bat_priv, "Removing selected gateway - " "no gateway in range\n"); - else if ((!bat_priv->curr_gw) && (curr_gw_tmp)) + else if ((!curr_gw) && (curr_gw_tmp)) bat_dbg(DBG_BATMAN, bat_priv, "Adding route to gateway %pM " "(gw_flags: %i, tq: %i)\n", @@ -181,31 +199,35 @@ void gw_election(struct bat_priv *bat_priv) void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node) { - struct gw_node *curr_gateway_tmp = bat_priv->curr_gw; + struct gw_node *curr_gateway_tmp; uint8_t gw_tq_avg, orig_tq_avg; + rcu_read_lock(); + curr_gateway_tmp = rcu_dereference(bat_priv->curr_gw); if (!curr_gateway_tmp) - return; + goto out_rcu; if (!curr_gateway_tmp->orig_node) - goto deselect; + goto deselect_rcu; if (!curr_gateway_tmp->orig_node->router) - goto deselect; + goto deselect_rcu; /* this node already is the gateway */ if (curr_gateway_tmp->orig_node == orig_node) - return; + goto out_rcu; if (!orig_node->router) - return; + goto out_rcu; gw_tq_avg = curr_gateway_tmp->orig_node->router->tq_avg; + rcu_read_unlock(); + orig_tq_avg = orig_node->router->tq_avg; /* the TQ value has to be better */ if (orig_tq_avg < gw_tq_avg) - return; + goto out; /** * if the routing class is greater than 3 the value tells us how much @@ -213,15 +235,23 @@ void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node) **/ if ((atomic_read(&bat_priv->gw_sel_class) > 3) && (orig_tq_avg - gw_tq_avg < atomic_read(&bat_priv->gw_sel_class))) - return; + goto out; bat_dbg(DBG_BATMAN, bat_priv, "Restarting gateway selection: better gateway found (tq curr: " "%i, tq new: %i)\n", gw_tq_avg, orig_tq_avg); + goto deselect; +out_rcu: + rcu_read_unlock(); + goto out; +deselect_rcu: + rcu_read_unlock(); deselect: gw_deselect(bat_priv); +out: + return; } static void gw_node_add(struct bat_priv *bat_priv, @@ -278,7 +308,7 @@ void gw_node_update(struct bat_priv *bat_priv, "Gateway %pM removed from gateway list\n", orig_node->orig); - if (gw_node == bat_priv->curr_gw) { + if (gw_node == rcu_dereference(bat_priv->curr_gw)) { rcu_read_unlock(); gw_deselect(bat_priv); return; @@ -316,7 +346,7 @@ void gw_node_purge(struct bat_priv *bat_priv) atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) continue; - if (bat_priv->curr_gw == gw_node) + if (rcu_dereference(bat_priv->curr_gw) == gw_node) gw_deselect(bat_priv); hlist_del_rcu(&gw_node->list); @@ -330,12 +360,16 @@ void gw_node_purge(struct bat_priv *bat_priv) static int _write_buffer_text(struct bat_priv *bat_priv, struct seq_file *seq, struct gw_node *gw_node) { - int down, up; + struct gw_node *curr_gw; + int down, up, ret; gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags, &down, &up); - return seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %3i - %i%s/%i%s\n", - (bat_priv->curr_gw == gw_node ? "=>" : " "), + rcu_read_lock(); + curr_gw = rcu_dereference(bat_priv->curr_gw); + + ret = seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %3i - %i%s/%i%s\n", + (curr_gw == gw_node ? "=>" : " "), gw_node->orig_node->orig, gw_node->orig_node->router->tq_avg, gw_node->orig_node->router->addr, @@ -345,6 +379,9 @@ static int _write_buffer_text(struct bat_priv *bat_priv, (down > 2048 ? "MBit" : "KBit"), (up > 2048 ? up / 1024 : up), (up > 2048 ? "MBit" : "KBit")); + + rcu_read_unlock(); + return ret; } int gw_client_seq_print_text(struct seq_file *seq, void *offset) @@ -465,8 +502,12 @@ int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb) if (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER) return -1; - if (!bat_priv->curr_gw) + rcu_read_lock(); + if (!rcu_dereference(bat_priv->curr_gw)) { + rcu_read_unlock(); return 0; + } + rcu_read_unlock(); return 1; } diff --git a/types.h b/types.h index ee77d48..8447330 100644 --- a/types.h +++ b/types.h @@ -161,7 +161,7 @@ struct bat_priv { spinlock_t forw_bcast_list_lock; /* protects */ spinlock_t hna_lhash_lock; /* protects hna_local_hash */ spinlock_t hna_ghash_lock; /* protects hna_global_hash */ - spinlock_t gw_list_lock; /* protects gw_list */ + spinlock_t gw_list_lock; /* protects gw_list and curr_gw */ spinlock_t vis_hash_lock; /* protects vis_hash */ spinlock_t vis_list_lock; /* protects vis_info::recv_list */ spinlock_t softif_neigh_lock; /* protects soft-interface neigh list */ -- batman-adv

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batman-adv; branch, master, updated. v2011.0.0-50-g75444f5
by postmaster＠open-mesh.org 13 Feb '11

13 Feb '11

The following commit has been merged in the master branch: commit 924c0d8f69aabc56b31595553ec5a125832a6c44 Author: Linus Lüssing <linus.luessing(a)ascom.ch> Date: Sun Feb 13 21:13:03 2011 +0000 batman-adv: add __rcu annotations for gw_node Add __rcu annotations for the rcu protected bat_priv->curr_gw pointer to allow sparse checking. Signed-off-by: Linus Lüssing <linus.luessing(a)ascom.ch> diff --git a/compat.h b/compat.h index a76d0be..4e89049 100644 --- a/compat.h +++ b/compat.h @@ -270,4 +270,10 @@ int bat_seq_printf(struct seq_file *m, const char *f, ...); #endif /* < KERNEL_VERSION(2, 6, 33) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) + +#define __rcu + +#endif /* < KERNEL_VERSION(2, 6, 36) */ + #endif /* _NET_BATMAN_ADV_COMPAT_H_ */ diff --git a/types.h b/types.h index 8447330..b6acb12 100644 --- a/types.h +++ b/types.h @@ -170,7 +170,7 @@ struct bat_priv { struct delayed_work hna_work; struct delayed_work orig_work; struct delayed_work vis_work; - struct gw_node *curr_gw; + struct gw_node __rcu *curr_gw; /* rcu protected pointer */ struct vis_info *my_vis_info; }; -- batman-adv

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batman-adv; branch, master, updated. v2011.0.0-50-g75444f5
by postmaster＠open-mesh.org 13 Feb '11

13 Feb '11

The following commit has been merged in the master branch: commit 75444f5f30ec14a8c2fd2bc4cea8311fafb94ad2 Author: Linus Lüssing <linus.luessing(a)ascom.ch> Date: Sun Feb 13 21:13:04 2011 +0000 batman-adv: Increase orig_node refcount before releasing rcu read lock When unicast_send_skb() is increasing the orig_node's refcount another thread might have been freeing this orig_node already. We need to increase the refcount in the rcu read lock protected area to avoid that. Signed-off-by: Linus Lüssing <linus.luessing(a)ascom.ch> diff --git a/gateway_client.c b/gateway_client.c index 4f0753f..3486854 100644 --- a/gateway_client.c +++ b/gateway_client.c @@ -54,6 +54,9 @@ void *gw_get_selected(struct bat_priv *bat_priv) orig_node = curr_gateway_tmp->orig_node; + if (orig_node) + kref_get(&orig_node->refcount); + out: rcu_read_unlock(); return orig_node; diff --git a/unicast.c b/unicast.c index 0e7c4df..a7aacad 100644 --- a/unicast.c +++ b/unicast.c @@ -300,10 +300,8 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) /* get routing information */ if (is_multicast_ether_addr(ethhdr->h_dest)) { orig_node = (struct orig_node *)gw_get_selected(bat_priv); - if (orig_node) { - kref_get(&orig_node->refcount); + if (orig_node) goto find_router; - } } /* check for hna host - increases orig_node refcount */ -- batman-adv

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linux integration; branch, merge/master, updated. v2.6.38-rc1-846-g52d210c
by postmaster＠open-mesh.org 10 Feb '11

10 Feb '11

The following commit has been merged in the merge/master branch: commit 52d210cfda9b1e5eb2a1dc964e38d625154bfbaa Author: Linus Lüssing <linus.luessing(a)ascom.ch> Date: Mon Feb 7 00:14:40 2011 +0000 batman-adv: Disallow originator addressing within mesh layer For a host in the mesh network, the batman layer should be transparent. However, we had one exception, data packets within the mesh network which have the same destination as a originator are being routed to that node, although there is no host that node's bat0 interface and therefore gets dropped anyway. This commit removes this exception. Signed-off-by: Linus Lüssing <linus.luessing(a)ascom.ch> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c index 12c1178..121b11d 100644 --- a/net/batman-adv/unicast.c +++ b/net/batman-adv/unicast.c @@ -286,7 +286,7 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) { struct ethhdr *ethhdr = (struct ethhdr *)skb->data; struct unicast_packet *unicast_packet; - struct orig_node *orig_node; + struct orig_node *orig_node = NULL; struct batman_if *batman_if; struct neigh_node *router; int data_len = skb->len; @@ -297,11 +297,6 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) /* get routing information */ if (is_multicast_ether_addr(ethhdr->h_dest)) orig_node = (struct orig_node *)gw_get_selected(bat_priv); - else - orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, - compare_orig, - choose_orig, - ethhdr->h_dest)); /* check for hna host */ if (!orig_node) -- linux integration

1 0

linux integration; branch, merge/master, updated. v2.6.38-rc1-846-g52d210c
by postmaster＠open-mesh.org 10 Feb '11

10 Feb '11

The following commit has been merged in the merge/master branch: commit 82898ab748b610a954995915c4122e89ac7e37cb Author: Sven Eckelmann <sven(a)narfation.org> Date: Tue Feb 8 12:43:54 2011 +0000 batman-adv: Split combined variable declarations Multiple variable declarations in a single statements over multiple lines can be split into multiple variable declarations without changing the actual behavior. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c index d8d079f..6fc7825 100644 --- a/net/batman-adv/unicast.c +++ b/net/batman-adv/unicast.c @@ -39,8 +39,8 @@ static struct sk_buff *frag_merge_packet(struct list_head *head, (struct unicast_frag_packet *)skb->data; struct sk_buff *tmp_skb; struct unicast_packet *unicast_packet; - int hdr_len = sizeof(struct unicast_packet), - uni_diff = sizeof(struct unicast_frag_packet) - hdr_len; + int hdr_len = sizeof(struct unicast_packet); + int uni_diff = sizeof(struct unicast_frag_packet) - hdr_len; /* set skb to the first part and tmp_skb to the second part */ if (up->flags & UNI_FRAG_HEAD) { -- linux integration

1 0

linux integration; branch, merge/master, updated. v2.6.38-rc1-846-g52d210c
by postmaster＠open-mesh.org 10 Feb '11

10 Feb '11

The following commit has been merged in the merge/master branch: commit 3a75d5891fb3a694bd78d5bbdc1afcd583aac6c9 Author: Sven Eckelmann <sven(a)narfation.org> Date: Thu Feb 10 14:33:56 2011 +0000 batman-adv: Use successive sequence numbers for fragments The two fragments of an unicast packet must have successive sequence numbers to allow the receiver side to detect matching fragments and merge them again. The current implementation doesn't provide that property because a sequence of two atomic_inc_return may be interleaved with another sequence which also changes the variable. The access to the fragment sequence number pool has either to be protected by correct locking or the access to the pool has to reserve two sequence numbers in a single access. The latter one can easily be done by increasing the value of the last used sequence number by 2 in a single access. The generated window of two currently unused sequence numbers can now be scattered across the two fragments. Reported-by: Linus Lüssing <linus.luessing(a)web.de> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c index 6fc7825..12c1178 100644 --- a/net/batman-adv/unicast.c +++ b/net/batman-adv/unicast.c @@ -231,6 +231,7 @@ int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, int ucf_hdr_len = sizeof(struct unicast_frag_packet); int data_len = skb->len - uc_hdr_len; int large_tail = 0; + uint16_t seqno; if (!bat_priv->primary_if) goto dropped; @@ -266,10 +267,9 @@ int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, frag1->flags = UNI_FRAG_HEAD | large_tail; frag2->flags = large_tail; - frag1->seqno = htons((uint16_t)atomic_inc_return( - &batman_if->frag_seqno)); - frag2->seqno = htons((uint16_t)atomic_inc_return( - &batman_if->frag_seqno)); + seqno = atomic_add_return(2, &batman_if->frag_seqno); + frag1->seqno = htons(seqno - 1); + frag2->seqno = htons(seqno); send_skb_packet(skb, batman_if, dstaddr); send_skb_packet(frag_skb, batman_if, dstaddr); -- linux integration

1 0

linux integration; branch, merge/master, updated. v2.6.38-rc1-846-g52d210c
by postmaster＠open-mesh.org 10 Feb '11

10 Feb '11

The following commit has been merged in the merge/master branch: commit f345a263a8ce5e50a63008b6b6fa53bc2bd9fb22 Author: Linus Lüssing <linus.luessing(a)ascom.ch> Date: Sun Feb 6 23:08:37 2011 +0000 batman-adv: Remove duplicate types.h inclusions types.h is included by main.h, which is included at the beginning of any other c-file anyway. Therefore this commit removes those duplicate inclussions. Signed-off-by: Linus Lüssing <linus.luessing(a)ascom.ch> Acked-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index 5e86d6f..319a7cc 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -24,7 +24,6 @@ #include <linux/slab.h> #include "icmp_socket.h" #include "send.h" -#include "types.h" #include "hash.h" #include "originator.h" #include "hard-interface.h" diff --git a/net/batman-adv/icmp_socket.h b/net/batman-adv/icmp_socket.h index 08b1859..462b190 100644 --- a/net/batman-adv/icmp_socket.h +++ b/net/batman-adv/icmp_socket.h @@ -22,8 +22,6 @@ #ifndef _NET_BATMAN_ADV_ICMP_SOCKET_H_ #define _NET_BATMAN_ADV_ICMP_SOCKET_H_ -#include "types.h" - #define ICMP_SOCKET "socket" void bat_socket_init(void); diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index dc9248d..06d956c 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -30,7 +30,6 @@ #include "translation-table.h" #include "hard-interface.h" #include "gateway_client.h" -#include "types.h" #include "vis.h" #include "hash.h" diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 028f739..8274140 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -28,7 +28,6 @@ #include "icmp_socket.h" #include "translation-table.h" #include "originator.h" -#include "types.h" #include "ring_buffer.h" #include "vis.h" #include "aggregation.h" diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index ceeca6f..a09d16f 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -22,8 +22,6 @@ #ifndef _NET_BATMAN_ADV_ROUTING_H_ #define _NET_BATMAN_ADV_ROUTING_H_ -#include "types.h" - void slide_own_bcast_window(struct batman_if *batman_if); void receive_bat_packet(struct ethhdr *ethhdr, struct batman_packet *batman_packet, diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 7cc620e..8314276 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -25,7 +25,6 @@ #include "translation-table.h" #include "soft-interface.h" #include "hard-interface.h" -#include "types.h" #include "vis.h" #include "aggregation.h" #include "gateway_common.h" diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h index bc53ade..b68c272 100644 --- a/net/batman-adv/send.h +++ b/net/batman-adv/send.h @@ -22,8 +22,6 @@ #ifndef _NET_BATMAN_ADV_SEND_H_ #define _NET_BATMAN_ADV_SEND_H_ -#include "types.h" - int send_skb_packet(struct sk_buff *skb, struct batman_if *batman_if, uint8_t *dst_addr); diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 145e0f7..bd088f8 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -26,7 +26,6 @@ #include "send.h" #include "bat_debugfs.h" #include "translation-table.h" -#include "types.h" #include "hash.h" #include "gateway_common.h" #include "gateway_client.h" diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index f6917dd..7fb6726 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -22,7 +22,6 @@ #include "main.h" #include "translation-table.h" #include "soft-interface.h" -#include "types.h" #include "hash.h" #include "originator.h" diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h index a4f3a37..f19931c 100644 --- a/net/batman-adv/translation-table.h +++ b/net/batman-adv/translation-table.h @@ -22,8 +22,6 @@ #ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ #define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ -#include "types.h" - int hna_local_init(struct bat_priv *bat_priv); void hna_local_add(struct net_device *soft_iface, uint8_t *addr); void hna_local_remove(struct bat_priv *bat_priv, -- linux integration

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linux integration; branch, merge/master, updated. v2.6.38-rc1-846-g52d210c
by postmaster＠open-mesh.org 10 Feb '11

10 Feb '11

The following commit has been merged in the merge/master branch: commit ada79851d379271e7b22d638ddcc3f17d8baa9d9 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sun Feb 6 23:26:43 2011 +0000 batman-adv: Linearize fragment packets before merge We access the data inside the skbs of two fragments directly using memmove during the merge. The data of the skb could span over multiple skb pages. An direct access without knowledge about the pages would lead to an invalid memory access. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c index cbf022c..d8d079f 100644 --- a/net/batman-adv/unicast.c +++ b/net/batman-adv/unicast.c @@ -40,7 +40,7 @@ static struct sk_buff *frag_merge_packet(struct list_head *head, struct sk_buff *tmp_skb; struct unicast_packet *unicast_packet; int hdr_len = sizeof(struct unicast_packet), - uni_diff = sizeof(struct unicast_frag_packet) - hdr_len; + uni_diff = sizeof(struct unicast_frag_packet) - hdr_len; /* set skb to the first part and tmp_skb to the second part */ if (up->flags & UNI_FRAG_HEAD) { @@ -50,12 +50,12 @@ static struct sk_buff *frag_merge_packet(struct list_head *head, skb = tfp->skb; } + if (skb_linearize(skb) < 0 || skb_linearize(tmp_skb) < 0) + goto err; + skb_pull(tmp_skb, sizeof(struct unicast_frag_packet)); - if (pskb_expand_head(skb, 0, tmp_skb->len, GFP_ATOMIC) < 0) { - /* free buffered skb, skb will be freed later */ - kfree_skb(tfp->skb); - return NULL; - } + if (pskb_expand_head(skb, 0, tmp_skb->len, GFP_ATOMIC) < 0) + goto err; /* move free entry to end */ tfp->skb = NULL; @@ -70,6 +70,11 @@ static struct sk_buff *frag_merge_packet(struct list_head *head, unicast_packet->packet_type = BAT_UNICAST; return skb; + +err: + /* free buffered skb, skb will be freed later */ + kfree_skb(tfp->skb); + return NULL; } static void frag_create_entry(struct list_head *head, struct sk_buff *skb) -- linux integration

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commits February 2011