From: Antonio Quartulli <antonio@meshcoding.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org,
Marek Lindner <lindner_marek@yahoo.de>,
Antonio Quartulli <antonio@meshcoding.com>
Subject: [PATCH 06/16] batman-adv: tvlv - add network coding container
Date: Wed, 9 Oct 2013 21:32:44 +0200 [thread overview]
Message-ID: <1381347174-3629-7-git-send-email-antonio@meshcoding.com> (raw)
In-Reply-To: <1381347174-3629-1-git-send-email-antonio@meshcoding.com>
From: Marek Lindner <lindner_marek@yahoo.de>
Create network coding container to announce network coding
capabilities (if enabled).
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/network-coding.c | 63 +++++++++++++++++++++++++++++++++++++++++
net/batman-adv/network-coding.h | 5 ++++
net/batman-adv/packet.h | 2 ++
net/batman-adv/sysfs.c | 4 ++-
net/batman-adv/types.h | 2 ++
5 files changed, 75 insertions(+), 1 deletion(-)
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 4ecc0b6..23f611b 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -59,6 +59,59 @@ static void batadv_nc_start_timer(struct batadv_priv *bat_priv)
}
/**
+ * batadv_nc_tvlv_container_update - update the network coding tvlv container
+ * after network coding setting change
+ * @bat_priv: the bat priv with all the soft interface information
+ */
+static void batadv_nc_tvlv_container_update(struct batadv_priv *bat_priv)
+{
+ char nc_mode;
+
+ nc_mode = atomic_read(&bat_priv->network_coding);
+
+ switch (nc_mode) {
+ case 0:
+ batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_NC, 1);
+ break;
+ case 1:
+ batadv_tvlv_container_register(bat_priv, BATADV_TVLV_NC, 1,
+ NULL, 0);
+ break;
+ }
+}
+
+/**
+ * batadv_nc_status_update - update the network coding tvlv container after
+ * network coding setting change
+ * @net_dev: the soft interface net device
+ */
+void batadv_nc_status_update(struct net_device *net_dev)
+{
+ struct batadv_priv *bat_priv = netdev_priv(net_dev);
+ batadv_nc_tvlv_container_update(bat_priv);
+}
+
+/**
+ * batadv_nc_tvlv_ogm_handler_v1 - process incoming nc 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)
+ * @tvlv_value: tvlv buffer containing the gateway data
+ * @tvlv_value_len: tvlv buffer length
+ */
+static void batadv_nc_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t flags,
+ void *tvlv_value,
+ uint16_t tvlv_value_len)
+{
+ if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND)
+ orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_NC;
+ else
+ orig->capabilities |= BATADV_ORIG_CAPA_HAS_NC;
+}
+
+/**
* batadv_nc_mesh_init - initialise coding hash table and start house keeping
* @bat_priv: the bat priv with all the soft interface information
*/
@@ -87,6 +140,10 @@ int batadv_nc_mesh_init(struct batadv_priv *bat_priv)
INIT_DELAYED_WORK(&bat_priv->nc.work, batadv_nc_worker);
batadv_nc_start_timer(bat_priv);
+ batadv_tvlv_handler_register(bat_priv, batadv_nc_tvlv_ogm_handler_v1,
+ NULL, BATADV_TVLV_NC, 1,
+ BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
+ batadv_nc_tvlv_container_update(bat_priv);
return 0;
err:
@@ -802,6 +859,10 @@ void batadv_nc_update_nc_node(struct batadv_priv *bat_priv,
if (!atomic_read(&bat_priv->network_coding))
goto out;
+ /* check if orig node is network coding enabled */
+ if (!(orig_node->capabilities & BATADV_ORIG_CAPA_HAS_NC))
+ goto out;
+
/* accept ogms from 'good' neighbors and single hop neighbors */
if (!batadv_can_nc_with_orig(bat_priv, orig_node, ogm_packet) &&
!is_single_hop_neigh)
@@ -1735,6 +1796,8 @@ free_nc_packet:
*/
void batadv_nc_mesh_free(struct batadv_priv *bat_priv)
{
+ batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_NC, 1);
+ batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_NC, 1);
cancel_delayed_work_sync(&bat_priv->nc.work);
batadv_nc_purge_paths(bat_priv, bat_priv->nc.coding_hash, NULL);
diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h
index ddfa618..d4fd315 100644
--- a/net/batman-adv/network-coding.h
+++ b/net/batman-adv/network-coding.h
@@ -22,6 +22,7 @@
#ifdef CONFIG_BATMAN_ADV_NC
+void batadv_nc_status_update(struct net_device *net_dev);
int batadv_nc_init(void);
int batadv_nc_mesh_init(struct batadv_priv *bat_priv);
void batadv_nc_mesh_free(struct batadv_priv *bat_priv);
@@ -47,6 +48,10 @@ int batadv_nc_init_debugfs(struct batadv_priv *bat_priv);
#else /* ifdef CONFIG_BATMAN_ADV_NC */
+static inline void batadv_nc_status_update(struct net_device *net_dev)
+{
+}
+
static inline int batadv_nc_init(void)
{
return 0;
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 8d470b2..55deb4d 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -122,10 +122,12 @@ enum batadv_bla_claimframe {
* enum batadv_tvlv_type - tvlv type definitions
* @BATADV_TVLV_GW: gateway tvlv
* @BATADV_TVLV_DAT: distributed arp table tvlv
+ * @BATADV_TVLV_NC: network coding tvlv
*/
enum batadv_tvlv_type {
BATADV_TVLV_GW = 0x01,
BATADV_TVLV_DAT = 0x02,
+ BATADV_TVLV_NC = 0x03,
};
/* the destination hardware field in the ARP frame is used to
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index e1a826e..fbc1c25 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -21,6 +21,7 @@
#include "sysfs.h"
#include "translation-table.h"
#include "distributed-arp-table.h"
+#include "network-coding.h"
#include "originator.h"
#include "hard-interface.h"
#include "gateway_common.h"
@@ -447,7 +448,8 @@ static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL);
#endif
#ifdef CONFIG_BATMAN_ADV_NC
-BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR, NULL);
+BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR,
+ batadv_nc_status_update);
#endif
static struct batadv_attribute *batadv_mesh_attrs[] = {
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 35ce834..fa5cb0d 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -188,9 +188,11 @@ struct batadv_orig_node {
/**
* enum batadv_orig_capabilities - orig node capabilities
* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
+ * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
*/
enum batadv_orig_capabilities {
BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
+ BATADV_ORIG_CAPA_HAS_NC = BIT(1),
};
/**
--
1.8.3.2
next prev parent reply other threads:[~2013-10-09 19:33 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-09 19:32 pull request: batman-adv 2013-10-09b Antonio Quartulli
2013-10-09 19:32 ` [PATCH 01/16] MAINTAINERS: batman-adv - update emails Antonio Quartulli
2013-10-09 19:32 ` [PATCH 02/16] batman-adv: switch to a new packet compatibility version Antonio Quartulli
2013-10-09 19:32 ` [PATCH 03/16] batman-adv: tvlv - basic infrastructure Antonio Quartulli
2013-10-09 19:32 ` [PATCH 04/16] batman-adv: tvlv - gateway download/upload bandwidth container Antonio Quartulli
2013-10-09 19:32 ` [PATCH 05/16] batman-adv: tvlv - add distributed arp table container Antonio Quartulli
2013-10-09 19:32 ` Antonio Quartulli [this message]
2013-10-09 19:32 ` [PATCH 07/16] batman-adv: tvlv - convert tt data sent within OGMs Antonio Quartulli
2013-10-09 19:32 ` [PATCH 08/16] batman-adv: tvlv - convert tt query packet to use tvlv unicast packets Antonio Quartulli
2013-10-09 19:32 ` [PATCH 09/16] batman-adv: tvlv - convert roaming adv " Antonio Quartulli
2013-10-09 19:32 ` [PATCH 10/16] batman-adv: use CRC32C instead of CRC16 in TT code Antonio Quartulli
2013-10-09 19:32 ` [PATCH 11/16] batman-adv: move BATADV_TT_CLIENT_TEMP to higher bit Antonio Quartulli
2013-10-09 19:32 ` [PATCH 12/16] batman-adv: remove vis functionality Antonio Quartulli
2013-10-09 19:32 ` [PATCH 13/16] batman-adv: add build check macros for packet member offset Antonio Quartulli
[not found] ` <1381347174-3629-14-git-send-email-antonio-x4xJYDvStAgysxA8WJXlww@public.gmane.org>
2013-10-10 8:37 ` David Laight
[not found] ` <AE90C24D6B3A694183C094C60CF0A2F6026B7387-CgBM+Bx2aUAnGFn1LkZF6NBPR1lH4CV8@public.gmane.org>
2013-10-10 8:55 ` Antonio Quartulli
2013-10-09 19:32 ` [PATCH 14/16] batman-adv: reorder packet types Antonio Quartulli
2013-10-09 19:32 ` [PATCH 15/16] batman-adv: remove packed from batadv_ogm_packet Antonio Quartulli
2013-10-09 19:32 ` [PATCH 16/16] batman-adv: reorder batadv_iv_flags Antonio Quartulli
2013-10-09 19:56 ` pull request: batman-adv 2013-10-09b David Miller
2013-10-11 6:10 ` Antonio Quartulli
[not found] ` <20131011061053.GF576-rVWd3aGhH2zPj3vggD0kEA@public.gmane.org>
2013-10-11 20:45 ` David Miller
-- strict thread matches above, loose matches on Subject: below --
2013-10-09 12:40 pull request: batman-adv 2013-10-09 Antonio Quartulli
2013-10-09 12:40 ` [PATCH 06/16] batman-adv: tvlv - add network coding container Antonio Quartulli
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1381347174-3629-7-git-send-email-antonio@meshcoding.com \
--to=antonio@meshcoding.com \
--cc=b.a.t.m.a.n@lists.open-mesh.org \
--cc=davem@davemloft.net \
--cc=lindner_marek@yahoo.de \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).