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Here are some batman-adv bugfixes:

Browse Source 
- fix possible IPv6 packet loss when multicast extension is used, by Linus Luessing
 
  - fix SKB handling issues for TTVN and DAT, by Matthias Schiffer (two patches)
 
  - fix include for eventpoll, by Sven Eckelmann
 
  - fix skb checksum for ttvn reroutes, by Sven Eckelmann
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Merge tag 'batadv-net-for-davem-20180319' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
Here are some batman-adv bugfixes:

 - fix possible IPv6 packet loss when multicast extension is used, by Linus Luessing

 - fix SKB handling issues for TTVN and DAT, by Matthias Schiffer (two patches)

 - fix include for eventpoll, by Sven Eckelmann

 - fix skb checksum for ttvn reroutes, by Sven Eckelmann
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2018-03-22 11:26:13 -04:00
commit ee54a9f9ae
5 changed files with 20 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/batman-adv/distributed-arp-table.c
View File

@ -393,7 +393,7 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
batadv_arp_hw_src(skb, hdr_size), &ip_src,
batadv_arp_hw_dst(skb, hdr_size), &ip_dst);
if (hdr_size == 0)
if (hdr_size < sizeof(struct batadv_unicast_packet))
return;
unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;

1
net/batman-adv/icmp_socket.c
View File

@ -24,6 +24,7 @@
#include <linux/debugfs.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/eventpoll.h>
#include <linux/export.h>
#include <linux/fcntl.h>
#include <linux/fs.h>

1
net/batman-adv/log.c
View File

@ -22,6 +22,7 @@
#include <linux/compiler.h>
#include <linux/debugfs.h>
#include <linux/errno.h>
#include <linux/eventpoll.h>
#include <linux/export.h>
#include <linux/fcntl.h>
#include <linux/fs.h>

4
net/batman-adv/multicast.c
View File

@ -543,8 +543,8 @@ update:
bat_priv->mcast.enabled = true;
}
return !(mcast_data.flags &
(BATADV_MCAST_WANT_ALL_IPV4 | BATADV_MCAST_WANT_ALL_IPV6));
return !(mcast_data.flags & BATADV_MCAST_WANT_ALL_IPV4 &&
mcast_data.flags & BATADV_MCAST_WANT_ALL_IPV6);
}
/**

25
net/batman-adv/routing.c
View File

@ -759,6 +759,7 @@ free_skb:
/**
* batadv_reroute_unicast_packet() - update the unicast header for re-routing
* @bat_priv: the bat priv with all the soft interface information
* @skb: unicast packet to process
* @unicast_packet: the unicast header to be updated
* @dst_addr: the payload destination
* @vid: VLAN identifier
@ -770,7 +771,7 @@ free_skb:
* Return: true if the packet header has been updated, false otherwise
*/
static bool
batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_unicast_packet *unicast_packet,
u8 *dst_addr, unsigned short vid)
{
@ -799,8 +800,10 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
}
/* update the packet header */
skb_postpull_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
ether_addr_copy(unicast_packet->dest, orig_addr);
unicast_packet->ttvn = orig_ttvn;
skb_postpush_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
ret = true;
out:
@ -841,7 +844,7 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
* the packet to
*/
if (batadv_tt_local_client_is_roaming(bat_priv, ethhdr->h_dest, vid)) {
if (batadv_reroute_unicast_packet(bat_priv, unicast_packet,
if (batadv_reroute_unicast_packet(bat_priv, skb, unicast_packet,
ethhdr->h_dest, vid))
batadv_dbg_ratelimited(BATADV_DBG_TT,
bat_priv,
@ -887,7 +890,7 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
* destination can possibly be updated and forwarded towards the new
* target host
*/
if (batadv_reroute_unicast_packet(bat_priv, unicast_packet,
if (batadv_reroute_unicast_packet(bat_priv, skb, unicast_packet,
ethhdr->h_dest, vid)) {
batadv_dbg_ratelimited(BATADV_DBG_TT, bat_priv,
"Rerouting unicast packet to %pM (dst=%pM): TTVN mismatch old_ttvn=%u new_ttvn=%u\n",
@ -910,12 +913,14 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
if (!primary_if)
return false;
/* update the packet header */
skb_postpull_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr);
unicast_packet->ttvn = curr_ttvn;
skb_postpush_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
batadv_hardif_put(primary_if);
unicast_packet->ttvn = curr_ttvn;
return true;
}
@ -968,14 +973,10 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
struct batadv_orig_node *orig_node = NULL, *orig_node_gw = NULL;
int check, hdr_size = sizeof(*unicast_packet);
enum batadv_subtype subtype;
struct ethhdr *ethhdr;
int ret = NET_RX_DROP;
bool is4addr, is_gw;
unicast_packet = (struct batadv_unicast_packet *)skb->data;
unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
ethhdr = eth_hdr(skb);
is4addr = unicast_packet->packet_type == BATADV_UNICAST_4ADDR;
/* the caller function should have already pulled 2 bytes */
if (is4addr)
@ -995,12 +996,14 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
if (!batadv_check_unicast_ttvn(bat_priv, skb, hdr_size))
goto free_skb;
unicast_packet = (struct batadv_unicast_packet *)skb->data;
/* packet for me */
if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) {
/* If this is a unicast packet from another backgone gw,
* drop it.
*/
orig_addr_gw = ethhdr->h_source;
orig_addr_gw = eth_hdr(skb)->h_source;
orig_node_gw = batadv_orig_hash_find(bat_priv, orig_addr_gw);
if (orig_node_gw) {
is_gw = batadv_bla_is_backbone_gw(skb, orig_node_gw,
@ -1015,6 +1018,8 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
}
if (is4addr) {
unicast_4addr_packet =
(struct batadv_unicast_4addr_packet *)skb->data;
subtype = unicast_4addr_packet->subtype;
batadv_dat_inc_counter(bat_priv, subtype);