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| author | Antonio Quartulli | 2013-11-16 12:03:48 +0100 |
|---|---|---|
| committer | Antonio Quartulli | 2014-01-08 20:49:43 +0100 |
| commit | 9464d07188c5322957427a456d12d945370f7b29 (patch) | |
| tree | 0284e8544e13f3b41a92de6f793805d63f13a4f3 /net/batman-adv/translation-table.c | |
| parent | batman-adv: add isolation_mark sysfs attribute (diff) | |
| download | kernel-qcow2-linux-9464d07188c5322957427a456d12d945370f7b29.tar.gz kernel-qcow2-linux-9464d07188c5322957427a456d12d945370f7b29.tar.xz kernel-qcow2-linux-9464d07188c5322957427a456d12d945370f7b29.zip | |
batman-adv: mark a local client as isolated when needed
A client sending packets which mark matches the value
configured via sysfs has to be identified as isolated using
the TT_CLIENT_ISOLA flag.
The match is mask based, meaning that only bits set in the
mask are compared with those in the mark value.
If the configured mask is equal to 0 no operation is
performed.
Such flag is then advertised within the classic client
announcement mechanism.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Diffstat (limited to 'net/batman-adv/translation-table.c')
| -rw-r--r-- | net/batman-adv/translation-table.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 2eaa1e9d8c99..669b8b64a39a 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -474,11 +474,13 @@ static void batadv_tt_global_free(struct batadv_priv *bat_priv, * @vid: VLAN identifier * @ifindex: index of the interface where the client is connected to (useful to * identify wireless clients) + * @mark: the value contained in the skb->mark field of the received packet (if + * any) * * Returns true if the client was successfully added, false otherwise. */ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr, - unsigned short vid, int ifindex) + unsigned short vid, int ifindex, uint32_t mark) { struct batadv_priv *bat_priv = netdev_priv(soft_iface); struct batadv_tt_local_entry *tt_local; @@ -489,6 +491,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr, int hash_added, table_size, packet_size_max; bool ret = false, roamed_back = false; uint8_t remote_flags; + uint32_t match_mark; if (ifindex != BATADV_NULL_IFINDEX) in_dev = dev_get_by_index(&init_net, ifindex); @@ -613,6 +616,17 @@ check_roaming: else tt_local->common.flags &= ~BATADV_TT_CLIENT_WIFI; + /* check the mark in the skb: if it's equal to the configured + * isolation_mark, it means the packet is coming from an isolated + * non-mesh client + */ + match_mark = (mark & bat_priv->isolation_mark_mask); + if (bat_priv->isolation_mark_mask && + match_mark == bat_priv->isolation_mark) + tt_local->common.flags |= BATADV_TT_CLIENT_ISOLA; + else + tt_local->common.flags &= ~BATADV_TT_CLIENT_ISOLA; + /* if any "dynamic" flag has been modified, resend an ADD event for this * entry so that all the nodes can get the new flags */ |