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[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit 391b59cdb1117e23673bcd3aca8b9878a0e418dc Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Tue May 10 18:41:25 2016 +0200 batman-adv: Add multicast optimization support for bridged setups With this patch we are finally able to support multicast optimizations in bridged setups, too. So far, if a bridge was added on top of a soft-interface (e.g. bat0) the batman-adv multicast optimizations needed to be disabled to avoid packetloss. Current Linux bridge implementations and API can now provide us with the so far missing information about interested but "remote" multicast receivers behind bridge ports. The Linux bridge performs the detection of remote participants interested in multicast packets with its own and mature so called IGMP and MLD snooping code and stores that in its database. With the new API provided by the bridge batman-adv can now simply hook into this database. We then reliably announce the gathered multicast listeners to other nodes through the batman-adv translation table. Additionally, the Linux bridge provides us with the information about whether an IGMP/MLD querier exists. If there is none then we need to disable multicast optimizations as we cannot learn about multicast listeners on external, bridged-in host then. Tested-by: Simon Wunderlich <sw(a)simonwunderlich.de> Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/compat-include/linux/etherdevice.h b/compat-include/linux/etherdevice.h index f120202..721945c 100644 --- a/compat-include/linux/etherdevice.h +++ b/compat-include/linux/etherdevice.h @@ -35,6 +35,15 @@ static inline void batadv_eth_hw_addr_random(struct net_device *dev) #endif /* < KERNEL_VERSION(3, 4, 0) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0) + +static inline void eth_zero_addr(u8 *addr) +{ + memset(addr, 0x00, ETH_ALEN); +} + +#endif /* < KERNEL_VERSION(3, 7, 0) */ + #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) #define ether_addr_equal_unaligned(_a, _b) (memcmp(_a, _b, ETH_ALEN) == 0) diff --git a/compat-include/linux/if_bridge.h b/compat-include/linux/if_bridge.h new file mode 100644 index 0000000..9aae018 --- /dev/null +++ b/compat-include/linux/if_bridge.h @@ -0,0 +1,68 @@ +#ifndef _NET_BATMAN_ADV_COMPAT_LINUX_IF_BRIDGE_H_ +#define _NET_BATMAN_ADV_COMPAT_LINUX_IF_BRIDGE_H_ + +#include <linux/version.h> +#include_next <linux/if_bridge.h> + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0) + +struct br_ip { + union { + __be32 ip4; +#if IS_ENABLED(CONFIG_IPV6) + struct in6_addr ip6; +#endif + } u; + __be16 proto; + __u16 vid; +}; + +struct br_ip_list { + struct list_head list; + struct br_ip addr; +}; + +#endif /* < KERNEL_VERSION(3, 16, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0) || \ + LINUX_VERSION_CODE == KERNEL_VERSION(3, 16, 0) && \ + (!IS_ENABLED(CONFIG_BRIDGE) || \ + !IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)) + +#define br_multicast_list_adjacent(dev, br_ip_list) \ + batadv_br_multicast_list_adjacent(dev, br_ip_list) + +#define br_multicast_has_querier_adjacent(dev, proto) \ + batadv_br_multicast_has_querier_adjacent(dev, proto) + +static inline int +batadv_br_multicast_list_adjacent(struct net_device *dev, + struct list_head *br_ip_list) +{ + return 0; +} + +static inline bool +batadv_br_multicast_has_querier_adjacent(struct net_device *dev, int proto) +{ + return false; +} + +#endif /* < KERNEL_VERSION(3, 16, 0) || + * == KERNEL_VERSION(3, 16, 0) && + * (!IS_ENABLED(CONFIG_BRIDGE) || + * !IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) + +static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, + int proto) +{ + pr_warn_once("Old kernel detected (< 3.17) - multicast optimizations disabled\n"); + + return false; +} + +#endif /* < KERNEL_VERSION(3, 17, 0) */ + +#endif /* _NET_BATMAN_ADV_COMPAT_LINUX_IF_BRIDGE_H_ */ diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index b8662f1..a4e73f1 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -26,6 +26,7 @@ #include <linux/etherdevice.h> #include <linux/fs.h> #include <linux/icmpv6.h> +#include <linux/if_bridge.h> #include <linux/if_ether.h> #include <linux/igmp.h> #include <linux/in6.h> @@ -36,6 +37,7 @@ #include <linux/list.h> #include <linux/lockdep.h> #include <linux/netdevice.h> +#include <linux/printk.h> #include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/skbuff.h> @@ -45,18 +47,53 @@ #include <linux/string.h> #include <linux/types.h> #include <net/addrconf.h> +#include <net/if_inet6.h> +#include <net/ip.h> #include <net/ipv6.h> #include "packet.h" #include "translation-table.h" /** + * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists + * @soft_iface: netdev struct of the mesh interface + * + * If the given soft interface has a bridge on top then the refcount + * of the according net device is increased. + * + * Return: NULL if no such bridge exists. Otherwise the net device of the + * bridge. + */ +static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) +{ + struct net_device *upper = soft_iface; + + rcu_read_lock(); + do { + upper = netdev_master_upper_dev_get_rcu(upper); + } while (upper && !(upper->priv_flags & IFF_EBRIDGE)); + + if (upper) + dev_hold(upper); + rcu_read_unlock(); + + return upper; +} + +/** * batadv_mcast_mla_softif_get - get softif multicast listeners * @dev: the device to collect multicast addresses from * @mcast_list: a list to put found addresses into * - * Collect multicast addresses of the local multicast listeners - * on the given soft interface, dev, in the given mcast_list. + * Collects multicast addresses of multicast listeners residing + * on this kernel on the given soft interface, dev, in + * the given mcast_list. In general, multicast listeners provided by + * your multicast receiving applications run directly on this node. + * + * If there is a bridge interface on top of dev, collects from that one + * instead. Just like with IP addresses and routes, multicast listeners + * will(/should) register to the bridge interface instead of an + * enslaved bat0. * * Return: -ENOMEM on memory allocation error or the number of * items added to the mcast_list otherwise. @@ -64,12 +101,13 @@ static int batadv_mcast_mla_softif_get(struct net_device *dev, struct hlist_head *mcast_list) { + struct net_device *bridge = batadv_mcast_get_bridge(dev); struct netdev_hw_addr *mc_list_entry; struct batadv_hw_addr *new; int ret = 0; - netif_addr_lock_bh(dev); - netdev_for_each_mc_addr(mc_list_entry, dev) { + netif_addr_lock_bh(bridge ? bridge : dev); + netdev_for_each_mc_addr(mc_list_entry, bridge ? bridge : dev) { new = kmalloc(sizeof(*new), GFP_ATOMIC); if (!new) { ret = -ENOMEM; @@ -80,7 +118,10 @@ static int batadv_mcast_mla_softif_get(struct net_device *dev, hlist_add_head(&new->list, mcast_list); ret++; } - netif_addr_unlock_bh(dev); + netif_addr_unlock_bh(bridge ? bridge : dev); + + if (bridge) + dev_put(bridge); return ret; } @@ -106,6 +147,83 @@ static bool batadv_mcast_mla_is_duplicate(u8 *mcast_addr, } /** + * batadv_mcast_mla_br_addr_cpy - copy a bridge multicast address + * @dst: destination to write to - a multicast MAC address + * @src: source to read from - a multicast IP address + * + * Converts a given multicast IPv4/IPv6 address from a bridge + * to its matching multicast MAC address and copies it into the given + * destination buffer. + * + * Caller needs to make sure the destination buffer can hold + * at least ETH_ALEN bytes. + */ +static void batadv_mcast_mla_br_addr_cpy(char *dst, const struct br_ip *src) +{ + if (src->proto == htons(ETH_P_IP)) + ip_eth_mc_map(src->u.ip4, dst); +#if IS_ENABLED(CONFIG_IPV6) + else if (src->proto == htons(ETH_P_IPV6)) + ipv6_eth_mc_map(&src->u.ip6, dst); +#endif + else + eth_zero_addr(dst); +} + +/** + * batadv_mcast_mla_bridge_get - get bridged-in multicast listeners + * @dev: a bridge slave whose bridge to collect multicast addresses from + * @mcast_list: a list to put found addresses into + * + * Collects multicast addresses of multicast listeners residing + * on foreign, non-mesh devices which we gave access to our mesh via + * a bridge on top of the given soft interface, dev, in the given + * mcast_list. + * + * Return: -ENOMEM on memory allocation error or the number of + * items added to the mcast_list otherwise. + */ +static int batadv_mcast_mla_bridge_get(struct net_device *dev, + struct hlist_head *mcast_list) +{ + struct list_head bridge_mcast_list = LIST_HEAD_INIT(bridge_mcast_list); + struct br_ip_list *br_ip_entry, *tmp; + struct batadv_hw_addr *new; + u8 mcast_addr[ETH_ALEN]; + int ret; + + /* we don't need to detect these devices/listeners, the IGMP/MLD + * snooping code of the Linux bridge already does that for us + */ + ret = br_multicast_list_adjacent(dev, &bridge_mcast_list); + if (ret < 0) + goto out; + + list_for_each_entry(br_ip_entry, &bridge_mcast_list, list) { + batadv_mcast_mla_br_addr_cpy(mcast_addr, &br_ip_entry->addr); + if (batadv_mcast_mla_is_duplicate(mcast_addr, mcast_list)) + continue; + + new = kmalloc(sizeof(*new), GFP_ATOMIC); + if (!new) { + ret = -ENOMEM; + break; + } + + ether_addr_copy(new->addr, mcast_addr); + hlist_add_head(&new->list, mcast_list); + } + +out: + list_for_each_entry_safe(br_ip_entry, tmp, &bridge_mcast_list, list) { + list_del(&br_ip_entry->list); + kfree(br_ip_entry); + } + + return ret; +} + +/** * batadv_mcast_mla_list_free - free a list of multicast addresses * @bat_priv: the bat priv with all the soft interface information * @mcast_list: the list to free @@ -222,29 +340,51 @@ static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv) * Updates the own multicast tvlv with our current multicast related settings, * capabilities and inabilities. * - * Return: true if the tvlv container is registered afterwards. Otherwise - * returns false. + * Return: false if we want all IPv4 && IPv6 multicast traffic and true + * otherwise. */ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) { struct batadv_tvlv_mcast_data mcast_data; + struct batadv_mcast_querier_state querier4 = {false, false}; + struct batadv_mcast_querier_state querier6 = {false, false}; + struct net_device *dev = bat_priv->soft_iface; mcast_data.flags = BATADV_NO_FLAGS; memset(mcast_data.reserved, 0, sizeof(mcast_data.reserved)); - /* Avoid attaching MLAs, if there is a bridge on top of our soft - * interface, we don't support that yet (TODO) + bat_priv->mcast.bridged = batadv_mcast_has_bridge(bat_priv); + if (!bat_priv->mcast.bridged) + goto update; + +#if !IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) + pr_warn_once("No bridge IGMP snooping compiled - multicast optimizations disabled\n"); +#endif + + querier4.exists = br_multicast_has_querier_anywhere(dev, ETH_P_IP); + querier4.shadowing = br_multicast_has_querier_adjacent(dev, ETH_P_IP); + + querier6.exists = br_multicast_has_querier_anywhere(dev, ETH_P_IPV6); + querier6.shadowing = br_multicast_has_querier_adjacent(dev, ETH_P_IPV6); + + mcast_data.flags |= BATADV_MCAST_WANT_ALL_UNSNOOPABLES; + + /* 1) If no querier exists at all, then multicast listeners on + * our local TT clients behind the bridge will keep silent. + * 2) If the selected querier is on one of our local TT clients, + * behind the bridge, then this querier might shadow multicast + * listeners on our local TT clients, behind this bridge. + * + * In both cases, we will signalize other batman nodes that + * we need all multicast traffic of the according protocol. */ - if (batadv_mcast_has_bridge(bat_priv)) { - if (bat_priv->mcast.enabled) { - batadv_tvlv_container_unregister(bat_priv, - BATADV_TVLV_MCAST, 2); - bat_priv->mcast.enabled = false; - } + if (!querier4.exists || querier4.shadowing) + mcast_data.flags |= BATADV_MCAST_WANT_ALL_IPV4; - return false; - } + if (!querier6.exists || querier6.shadowing) + mcast_data.flags |= BATADV_MCAST_WANT_ALL_IPV6; +update: if (!bat_priv->mcast.enabled || mcast_data.flags != bat_priv->mcast.flags) { batadv_tvlv_container_register(bat_priv, BATADV_TVLV_MCAST, 2, @@ -253,7 +393,8 @@ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) bat_priv->mcast.enabled = true; } - return true; + return !(mcast_data.flags & + (BATADV_MCAST_WANT_ALL_IPV4 + BATADV_MCAST_WANT_ALL_IPV6)); } /** @@ -276,6 +417,10 @@ void batadv_mcast_mla_update(struct batadv_priv *bat_priv) if (ret < 0) goto out; + ret = batadv_mcast_mla_bridge_get(soft_iface, &mcast_list); + if (ret < 0) + goto out; + update: batadv_mcast_mla_tt_retract(bat_priv, &mcast_list); batadv_mcast_mla_tt_add(bat_priv, &mcast_list); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 32c6d0e..83303c2 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -755,6 +755,17 @@ struct batadv_priv_dat { #ifdef CONFIG_BATMAN_ADV_MCAST /** + * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged + * @exists: whether a querier exists in the mesh + * @shadowing: if a querier exists, whether it is potentially shadowing + * multicast listeners (i.e. querier is behind our own bridge segment) + */ +struct batadv_mcast_querier_state { + bool exists; + bool shadowing; +}; + +/** * struct batadv_priv_mcast - per mesh interface mcast data * @mla_list: list of multicast addresses we are currently announcing via TT * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable @@ -763,6 +774,7 @@ struct batadv_priv_dat { * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic * @flags: the flags we have last sent in our mcast tvlv * @enabled: whether the multicast tvlv is currently enabled + * @bridged: whether the soft interface has a bridge on top * @num_disabled: number of nodes that have no mcast tvlv * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic * @num_want_all_ipv4: counter for items in want_all_ipv4_list @@ -777,6 +789,7 @@ struct batadv_priv_mcast { struct hlist_head want_all_ipv6_list; u8 flags; bool enabled; + bool bridged; atomic_t num_disabled; atomic_t num_want_all_unsnoopables; atomic_t num_want_all_ipv4; -- linux integration

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[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit ffdce4ff0ef0dd194364fe414a5f4ada850f9312 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Tue May 10 18:41:26 2016 +0200 batman-adv: Adding logging of mcast flag changes With this patch changes relevant to a node's own multicast flags are printed to the 'mcast' log level. Tested-by: Simon Wunderlich <sw(a)simonwunderlich.de> Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 76925266..832df0f 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -231,6 +231,7 @@ __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr); * @BATADV_DBG_BLA: bridge loop avoidance messages * @BATADV_DBG_DAT: ARP snooping and DAT related messages * @BATADV_DBG_NC: network coding related messages + * @BATADV_DBG_MCAST: multicast related messages * @BATADV_DBG_ALL: the union of all the above log levels */ enum batadv_dbg_level { @@ -240,7 +241,8 @@ enum batadv_dbg_level { BATADV_DBG_BLA = BIT(3), BATADV_DBG_DAT = BIT(4), BATADV_DBG_NC = BIT(5), - BATADV_DBG_ALL = 63, + BATADV_DBG_MCAST = BIT(6), + BATADV_DBG_ALL = 127, }; #ifdef CONFIG_BATMAN_ADV_DEBUG diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index a4e73f1..d80178c 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -33,6 +33,7 @@ #include <linux/in.h> #include <linux/ip.h> #include <linux/ipv6.h> +#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> @@ -334,6 +335,122 @@ static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv) } /** + * batadv_mcast_querier_log - debug output regarding the querier status on link + * @bat_priv: the bat priv with all the soft interface information + * @str_proto: a string for the querier protocol (e.g. "IGMP" or "MLD") + * @old_state: the previous querier state on our link + * @new_state: the new querier state on our link + * + * Outputs debug messages to the logging facility with log level 'mcast' + * regarding changes to the querier status on the link which are relevant + * to our multicast optimizations. + * + * Usually this is about whether a querier appeared or vanished in + * our mesh or whether the querier is in the suboptimal position of being + * behind our local bridge segment: Snooping switches will directly + * forward listener reports to the querier, therefore batman-adv and + * the bridge will potentially not see these listeners - the querier is + * potentially shadowing listeners from us then. + * + * This is only interesting for nodes with a bridge on top of their + * soft interface. + */ +static void +batadv_mcast_querier_log(struct batadv_priv *bat_priv, char *str_proto, + struct batadv_mcast_querier_state *old_state, + struct batadv_mcast_querier_state *new_state) +{ + if (!old_state->exists && new_state->exists) + batadv_info(bat_priv->soft_iface, "%s Querier appeared\n", + str_proto); + else if (old_state->exists && !new_state->exists) + batadv_info(bat_priv->soft_iface, + "%s Querier disappeared - multicast optimizations disabled\n", + str_proto); + else if (!bat_priv->mcast.bridged && !new_state->exists) + batadv_info(bat_priv->soft_iface, + "No %s Querier present - multicast optimizations disabled\n", + str_proto); + + if (new_state->exists) { + if ((!old_state->shadowing && new_state->shadowing) || + (!old_state->exists && new_state->shadowing)) + batadv_dbg(BATADV_DBG_MCAST, bat_priv, + "%s Querier is behind our bridged segment: Might shadow listeners\n", + str_proto); + else if (old_state->shadowing && !new_state->shadowing) + batadv_dbg(BATADV_DBG_MCAST, bat_priv, + "%s Querier is not behind our bridged segment\n", + str_proto); + } +} + +/** + * batadv_mcast_bridge_log - debug output for topology changes in bridged setups + * @bat_priv: the bat priv with all the soft interface information + * @bridged: a flag about whether the soft interface is currently bridged or not + * @querier_ipv4: (maybe) new status of a potential, selected IGMP querier + * @querier_ipv6: (maybe) new status of a potential, selected MLD querier + * + * If no bridges are ever used on this node, then this function does nothing. + * + * Otherwise this function outputs debug information to the 'mcast' log level + * which might be relevant to our multicast optimizations. + * + * More precisely, it outputs information when a bridge interface is added or + * removed from a soft interface. And when a bridge is present, it further + * outputs information about the querier state which is relevant for the + * multicast flags this node is going to set. + */ +static void +batadv_mcast_bridge_log(struct batadv_priv *bat_priv, bool bridged, + struct batadv_mcast_querier_state *querier_ipv4, + struct batadv_mcast_querier_state *querier_ipv6) +{ + if (!bat_priv->mcast.bridged && bridged) + batadv_dbg(BATADV_DBG_MCAST, bat_priv, + "Bridge added: Setting Unsnoopables(U)-flag\n"); + else if (bat_priv->mcast.bridged && !bridged) + batadv_dbg(BATADV_DBG_MCAST, bat_priv, + "Bridge removed: Unsetting Unsnoopables(U)-flag\n"); + + if (bridged) { + batadv_mcast_querier_log(bat_priv, "IGMP", + &bat_priv->mcast.querier_ipv4, + querier_ipv4); + batadv_mcast_querier_log(bat_priv, "MLD", + &bat_priv->mcast.querier_ipv6, + querier_ipv6); + } +} + +/** + * batadv_mcast_flags_logs - output debug information about mcast flag changes + * @bat_priv: the bat priv with all the soft interface information + * @flags: flags indicating the new multicast state + * + * Whenever the multicast flags this nodes announces changes (@mcast_flags vs. + * bat_priv->mcast.flags), this notifies userspace via the 'mcast' log level. + */ +static void batadv_mcast_flags_log(struct batadv_priv *bat_priv, u8 flags) +{ + u8 old_flags = bat_priv->mcast.flags; + char str_old_flags[] = "[...]"; + + sprintf(str_old_flags, "[%c%c%c]", + (old_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.', + (old_flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.', + (old_flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.'); + + batadv_dbg(BATADV_DBG_MCAST, bat_priv, + "Changing multicast flags from '%s' to '[%c%c%c]'\n", + bat_priv->mcast.enabled ? str_old_flags : "<undefined>", + (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.', + (flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.', + (flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.'); +} + +/** * batadv_mcast_mla_tvlv_update - update multicast tvlv * @bat_priv: the bat priv with all the soft interface information * @@ -349,12 +466,13 @@ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) struct batadv_mcast_querier_state querier4 = {false, false}; struct batadv_mcast_querier_state querier6 = {false, false}; struct net_device *dev = bat_priv->soft_iface; + bool bridged; mcast_data.flags = BATADV_NO_FLAGS; memset(mcast_data.reserved, 0, sizeof(mcast_data.reserved)); - bat_priv->mcast.bridged = batadv_mcast_has_bridge(bat_priv); - if (!bat_priv->mcast.bridged) + bridged = batadv_mcast_has_bridge(bat_priv); + if (!bridged) goto update; #if !IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) @@ -385,8 +503,19 @@ static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv) mcast_data.flags |= BATADV_MCAST_WANT_ALL_IPV6; update: + batadv_mcast_bridge_log(bat_priv, bridged, &querier4, &querier6); + + bat_priv->mcast.querier_ipv4.exists = querier4.exists; + bat_priv->mcast.querier_ipv4.shadowing = querier4.shadowing; + + bat_priv->mcast.querier_ipv6.exists = querier6.exists; + bat_priv->mcast.querier_ipv6.shadowing = querier6.shadowing; + + bat_priv->mcast.bridged = bridged; + if (!bat_priv->mcast.enabled || mcast_data.flags != bat_priv->mcast.flags) { + batadv_mcast_flags_log(bat_priv, mcast_data.flags); batadv_tvlv_container_register(bat_priv, BATADV_TVLV_MCAST, 2, &mcast_data, sizeof(mcast_data)); bat_priv->mcast.flags = mcast_data.flags; diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 81665b1..b60999d 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -808,6 +808,10 @@ static int batadv_softif_init_late(struct net_device *dev) atomic_set(&bat_priv->distributed_arp_table, 1); #endif #ifdef CONFIG_BATMAN_ADV_MCAST + bat_priv->mcast.querier_ipv4.exists = false; + bat_priv->mcast.querier_ipv4.shadowing = false; + bat_priv->mcast.querier_ipv6.exists = false; + bat_priv->mcast.querier_ipv6.shadowing = false; bat_priv->mcast.flags = BATADV_NO_FLAGS; atomic_set(&bat_priv->multicast_mode, 1); atomic_set(&bat_priv->mcast.num_disabled, 0); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 83303c2..ab863a5 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -772,6 +772,8 @@ struct batadv_mcast_querier_state { * multicast traffic * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic + * @querier_ipv4: the current state of an IGMP querier in the mesh + * @querier_ipv6: the current state of an MLD querier in the mesh * @flags: the flags we have last sent in our mcast tvlv * @enabled: whether the multicast tvlv is currently enabled * @bridged: whether the soft interface has a bridge on top @@ -787,6 +789,8 @@ struct batadv_priv_mcast { struct hlist_head want_all_unsnoopables_list; struct hlist_head want_all_ipv4_list; struct hlist_head want_all_ipv6_list; + struct batadv_mcast_querier_state querier_ipv4; + struct batadv_mcast_querier_state querier_ipv6; u8 flags; bool enabled; bool bridged; -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit f1f0fbb2c956863e8fe3c9528cb50a8cc4a270ea Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Tue May 10 18:41:27 2016 +0200 batman-adv: Add debugfs table for mcast flags This patch adds a debugfs table with originators and their according multicast flags to help users figure out why multicast optimizations might be enabled or disabled for them. Tested-by: Simon Wunderlich <sw(a)simonwunderlich.de> Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c index 9529004..f187a8f 100644 --- a/net/batman-adv/debugfs.c +++ b/net/batman-adv/debugfs.c @@ -48,6 +48,7 @@ #include "distributed-arp-table.h" #include "gateway_client.h" #include "icmp_socket.h" +#include "multicast.h" #include "network-coding.h" #include "originator.h" #include "translation-table.h" @@ -363,6 +364,22 @@ static int batadv_nc_nodes_open(struct inode *inode, struct file *file) } #endif +#ifdef CONFIG_BATMAN_ADV_MCAST +/** + * batadv_mcast_flags_open - prepare file handler for reads from mcast_flags + * @inode: inode which was opened + * @file: file handle to be initialized + * + * Return: 0 on success or negative error number in case of failure + */ +static int batadv_mcast_flags_open(struct inode *inode, struct file *file) +{ + struct net_device *net_dev = (struct net_device *)inode->i_private; + + return single_open(file, batadv_mcast_flags_seq_print_text, net_dev); +} +#endif + #define BATADV_DEBUGINFO(_name, _mode, _open) \ struct batadv_debuginfo batadv_debuginfo_##_name = { \ .attr = { \ @@ -407,6 +424,9 @@ static BATADV_DEBUGINFO(transtable_local, S_IRUGO, #ifdef CONFIG_BATMAN_ADV_NC static BATADV_DEBUGINFO(nc_nodes, S_IRUGO, batadv_nc_nodes_open); #endif +#ifdef CONFIG_BATMAN_ADV_MCAST +static BATADV_DEBUGINFO(mcast_flags, S_IRUGO, batadv_mcast_flags_open); +#endif static struct batadv_debuginfo *batadv_mesh_debuginfos[] = { &batadv_debuginfo_neighbors, @@ -424,6 +444,9 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = { #ifdef CONFIG_BATMAN_ADV_NC &batadv_debuginfo_nc_nodes, #endif +#ifdef CONFIG_BATMAN_ADV_MCAST + &batadv_debuginfo_mcast_flags, +#endif NULL, }; diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index d80178c..abb12f1 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -41,6 +41,7 @@ #include <linux/printk.h> #include <linux/rculist.h> #include <linux/rcupdate.h> +#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -52,6 +53,8 @@ #include <net/ip.h> #include <net/ipv6.h> +#include "hard-interface.h" +#include "hash.h" #include "packet.h" #include "translation-table.h" @@ -1130,6 +1133,107 @@ void batadv_mcast_init(struct batadv_priv *bat_priv) } /** + * batadv_mcast_flags_print_header - print own mcast flags to debugfs table + * @bat_priv: the bat priv with all the soft interface information + * @seq: debugfs table seq_file struct + * + * Prints our own multicast flags including a more specific reason why + * they are set, that is prints the bridge and querier state too, to + * the debugfs table specified via @seq. + */ +static void batadv_mcast_flags_print_header(struct batadv_priv *bat_priv, + struct seq_file *seq) +{ + u8 flags = bat_priv->mcast.flags; + char querier4, querier6, shadowing4, shadowing6; + bool bridged = bat_priv->mcast.bridged; + + if (bridged) { + querier4 = bat_priv->mcast.querier_ipv4.exists ? '.' : '4'; + querier6 = bat_priv->mcast.querier_ipv6.exists ? '.' : '6'; + shadowing4 = bat_priv->mcast.querier_ipv4.shadowing ? '4' : '.'; + shadowing6 = bat_priv->mcast.querier_ipv6.shadowing ? '6' : '.'; + } else { + querier4 = '?'; + querier6 = '?'; + shadowing4 = '?'; + shadowing6 = '?'; + } + + seq_printf(seq, "Multicast flags (own flags: [%c%c%c])\n", + (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.', + (flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.', + (flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.'); + seq_printf(seq, "* Bridged [U]\t\t\t\t%c\n", bridged ? 'U' : '.'); + seq_printf(seq, "* No IGMP/MLD Querier [4/6]:\t\t%c/%c\n", + querier4, querier6); + seq_printf(seq, "* Shadowing IGMP/MLD Querier [4/6]:\t%c/%c\n", + shadowing4, shadowing6); + seq_puts(seq, "-------------------------------------------\n"); + seq_printf(seq, " %-10s %s\n", "Originator", "Flags"); +} + +/** + * batadv_mcast_flags_seq_print_text - print the mcast flags of other nodes + * @seq: seq file to print on + * @offset: not used + * + * This prints a table of (primary) originators and their according + * multicast flags, including (in the header) our own. + * + * Return: always 0 + */ +int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset) +{ + struct net_device *net_dev = (struct net_device *)seq->private; + struct batadv_priv *bat_priv = netdev_priv(net_dev); + struct batadv_hard_iface *primary_if; + struct batadv_hashtable *hash = bat_priv->orig_hash; + struct batadv_orig_node *orig_node; + struct hlist_head *head; + u8 flags; + u32 i; + + primary_if = batadv_seq_print_text_primary_if_get(seq); + if (!primary_if) + return 0; + + batadv_mcast_flags_print_header(bat_priv, seq); + + for (i = 0; i < hash->size; i++) { + head = &hash->table[i]; + + rcu_read_lock(); + hlist_for_each_entry_rcu(orig_node, head, hash_entry) { + if (!(orig_node->capa_initialized & + BATADV_ORIG_CAPA_HAS_MCAST)) + continue; + + if (!(orig_node->capabilities & + BATADV_ORIG_CAPA_HAS_MCAST)) { + seq_printf(seq, "%pM -\n", orig_node->orig); + continue; + } + + flags = orig_node->mcast_flags; + + seq_printf(seq, "%pM [%c%c%c]\n", orig_node->orig, + (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) + ? 'U' : '.', + (flags & BATADV_MCAST_WANT_ALL_IPV4) + ? '4' : '.', + (flags & BATADV_MCAST_WANT_ALL_IPV6) + ? '6' : '.'); + } + rcu_read_unlock(); + } + + batadv_hardif_put(primary_if); + + return 0; +} + +/** * batadv_mcast_free - free the multicast optimizations structures * @bat_priv: the bat priv with all the soft interface information */ diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h index 80bceec..1fb00ba 100644 --- a/net/batman-adv/multicast.h +++ b/net/batman-adv/multicast.h @@ -20,6 +20,7 @@ #include "main.h" +struct seq_file; struct sk_buff; /** @@ -46,6 +47,8 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, void batadv_mcast_init(struct batadv_priv *bat_priv); +int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset); + void batadv_mcast_free(struct batadv_priv *bat_priv); void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node); -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit 58b0bf5237f1fe6351803584d5c26c5ea722b4ea Author: Matthias Schiffer <mschiffer(a)universe-factory.net> Date: Mon May 9 18:41:09 2016 +0200 batman-adv: add netlink command to query generic mesh information files BATADV_CMD_GET_MESH_INFO is used to query basic information about a batman-adv softif (name, index and MAC address for both the softif and the primary hardif; routing algorithm; batman-adv version). Signed-off-by: Matthias Schiffer <mschiffer(a)universe-factory.net> Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> [sven.eckelmann(a)open-mesh.com: Reduce the number of changes to BATADV_CMD_GET_MESH_INFO, add missing kerneldoc, add policy for attributes] Signed-off-by: Sven Eckelmann <sven.eckelmann(a)open-mesh.com> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/compat.h b/compat.h index 5a5f478..7d5c8b6 100644 --- a/compat.h +++ b/compat.h @@ -62,6 +62,12 @@ static int __batadv_interface_kill_vid(struct net_device *dev, __be16 proto,\ #endif /* < KERNEL_VERSION(3, 3, 0) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0) + +#define snd_portid snd_pid + +#endif /* < KERNEL_VERSION(3, 7, 0) */ + #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 9, 0) #define batadv_interface_set_mac_addr(x, y) \ diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h index ba611a7..a908140 100644 --- a/include/uapi/linux/batman_adv.h +++ b/include/uapi/linux/batman_adv.h @@ -24,12 +24,28 @@ * enum batadv_nl_attrs - batman-adv netlink attributes * * @BATADV_ATTR_UNSPEC: unspecified attribute to catch errors + * @BATADV_ATTR_VERSION: batman-adv version string + * @BATADV_ATTR_ALGO_NAME: name of routing algorithm + * @BATADV_ATTR_MESH_IFINDEX: index of the batman-adv interface + * @BATADV_ATTR_MESH_IFNAME: name of the batman-adv interface + * @BATADV_ATTR_MESH_ADDRESS: mac address of the batman-adv interface + * @BATADV_ATTR_HARD_IFINDEX: index of the non-batman-adv interface + * @BATADV_ATTR_HARD_IFNAME: name of the non-batman-adv interface + * @BATADV_ATTR_HARD_ADDRESS: mac address of the non-batman-adv interface * @__BATADV_ATTR_AFTER_LAST: internal use * @NUM_BATADV_ATTR: total number of batadv_nl_attrs available * @BATADV_ATTR_MAX: highest attribute number currently defined */ enum batadv_nl_attrs { BATADV_ATTR_UNSPEC, + BATADV_ATTR_VERSION, + BATADV_ATTR_ALGO_NAME, + BATADV_ATTR_MESH_IFINDEX, + BATADV_ATTR_MESH_IFNAME, + BATADV_ATTR_MESH_ADDRESS, + BATADV_ATTR_HARD_IFINDEX, + BATADV_ATTR_HARD_IFNAME, + BATADV_ATTR_HARD_ADDRESS, /* add attributes above here, update the policy in netlink.c */ __BATADV_ATTR_AFTER_LAST, NUM_BATADV_ATTR = __BATADV_ATTR_AFTER_LAST, @@ -40,11 +56,13 @@ enum batadv_nl_attrs { * enum batadv_nl_commands - supported batman-adv netlink commands * * @BATADV_CMD_UNSPEC: unspecified command to catch errors + * @BATADV_CMD_GET_MESH_INFO: Query basic information about batman-adv device * @__BATADV_CMD_AFTER_LAST: internal use * @BATADV_CMD_MAX: highest used command number */ enum batadv_nl_commands { BATADV_CMD_UNSPEC, + BATADV_CMD_GET_MESH_INFO, /* add new commands above here */ __BATADV_CMD_AFTER_LAST, BATADV_CMD_MAX = __BATADV_CMD_AFTER_LAST - 1 diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 6b92983..54724b7 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -18,12 +18,24 @@ #include "main.h" #include "netlink.h" +#include <linux/errno.h> +#include <linux/fs.h> #include <linux/genetlink.h> +#include <linux/if_ether.h> #include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/netlink.h> +#include <linux/stddef.h> #include <linux/printk.h> #include <net/genetlink.h> +#include <net/netlink.h> #include <uapi/linux/batman_adv.h> +#include "hard-interface.h" +#include "soft-interface.h" + +struct sk_buff; + static struct genl_family batadv_netlink_family = { .id = GENL_ID_GENERATE, .hdrsize = 0, @@ -32,7 +44,132 @@ static struct genl_family batadv_netlink_family = { .maxattr = BATADV_ATTR_MAX, }; +static struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { + [BATADV_ATTR_VERSION] = { .type = NLA_STRING }, + [BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING }, + [BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 }, + [BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING }, + [BATADV_ATTR_MESH_ADDRESS] = { .len = ETH_ALEN }, + [BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 }, + [BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING }, + [BATADV_ATTR_HARD_ADDRESS] = { .len = ETH_ALEN }, +}; + +/** + * batadv_netlink_mesh_info_put - fill in generic information about mesh + * interface + * @msg: netlink message to be sent back + * @soft_iface: interface for which the data should be taken + * + * Return: 0 on success, < 0 on error + */ +static int +batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface) +{ + struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_hard_iface *primary_if = NULL; + struct net_device *hard_iface; + int ret = -ENOBUFS; + + if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) || + nla_put_string(msg, BATADV_ATTR_ALGO_NAME, + bat_priv->bat_algo_ops->name) || + nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) || + nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) || + nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN, + soft_iface->dev_addr)) + goto out; + + primary_if = batadv_primary_if_get_selected(bat_priv); + if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) { + hard_iface = primary_if->net_dev; + + if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, + hard_iface->ifindex) || + nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, + hard_iface->name) || + nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN, + hard_iface->dev_addr)) + goto out; + } + + ret = 0; + + out: + if (primary_if) + batadv_hardif_put(primary_if); + + return ret; +} + +/** + * batadv_netlink_get_mesh_info - handle incoming BATADV_CMD_GET_MESH_INFO + * netlink request + * @skb: received netlink message + * @info: receiver information + * + * Return: 0 on success, < 0 on error + */ +static int +batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info) +{ + struct net *net = genl_info_net(info); + struct net_device *soft_iface; + struct sk_buff *msg = NULL; + void *msg_head; + int ifindex; + int ret; + + if (!info->attrs[BATADV_ATTR_MESH_IFINDEX]) + return -EINVAL; + + ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]); + if (!ifindex) + return -EINVAL; + + soft_iface = dev_get_by_index(net, ifindex); + if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { + ret = -ENODEV; + goto out; + } + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) { + ret = -ENOMEM; + goto out; + } + + msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq, + &batadv_netlink_family, 0, + BATADV_CMD_GET_MESH_INFO); + if (!msg_head) { + ret = -ENOBUFS; + goto out; + } + + ret = batadv_netlink_mesh_info_put(msg, soft_iface); + + out: + if (soft_iface) + dev_put(soft_iface); + + if (ret) { + if (msg) + nlmsg_free(msg); + return ret; + } + + genlmsg_end(msg, msg_head); + return genlmsg_reply(msg, info); +} + static struct genl_ops batadv_netlink_ops[] = { + { + .cmd = BATADV_CMD_GET_MESH_INFO, + .flags = GENL_ADMIN_PERM, + .policy = batadv_netlink_policy, + .doit = batadv_netlink_get_mesh_info, + }, }; /** -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit 71e957cd30a0b17182c5247935b6d4c127f12265 Author: Marek Lindner <mareklindner(a)neomailbox.ch> Date: Tue May 10 22:31:59 2016 +0800 batman-adv: init ELP tweaking options only once The ELP interval and throughput override interface settings are initialized with default settings on every time an interface is added to a mesh. This patch prevents this behavior by moving the configuration init to the interface detection routine which runs only once per interface. Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index c16cd44..3c5d251 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -70,11 +70,6 @@ static int batadv_v_iface_enable(struct batadv_hard_iface *hard_iface) if (ret < 0) batadv_v_elp_iface_disable(hard_iface); - /* enable link throughput auto-detection by setting the throughput - * override to zero - */ - atomic_set(&hard_iface->bat_v.throughput_override, 0); - return ret; } diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 8909d1e..cf0262b 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -344,7 +344,6 @@ int batadv_v_elp_iface_enable(struct batadv_hard_iface *hard_iface) /* randomize initial seqno to avoid collision */ get_random_bytes(&random_seqno, sizeof(random_seqno)); atomic_set(&hard_iface->bat_v.elp_seqno, random_seqno); - atomic_set(&hard_iface->bat_v.elp_interval, 500); /* assume full-duplex by default */ hard_iface->bat_v.flags |= BATADV_FULL_DUPLEX; diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index db2009d..dd6a5a2e 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -683,6 +683,13 @@ batadv_hardif_add_interface(struct net_device *net_dev) if (batadv_is_wifi_netdev(net_dev)) hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS; + /* enable link throughput auto-detection by setting the throughput + * override to zero + */ + atomic_set(&hard_iface->bat_v.throughput_override, 0); + + atomic_set(&hard_iface->bat_v.elp_interval, 500); + /* extra reference for return */ kref_init(&hard_iface->refcount); kref_get(&hard_iface->refcount); -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit ffd2f27908e5bb532aadcc6bcc5a69dbeba758dd Author: Sven Eckelmann <sven.eckelmann(a)open-mesh.com> Date: Wed May 11 09:36:40 2016 +0200 batman-adv: Only init ELP tweaking options when BATMAN_V is enabled The build currently fails with CONFIG_BATMAN_ADV_BATMAN_V=n because hard_iface->bat_v is only defined when CONFIG_BATMAN_ADV_BATMAN_V=y is set. The initialization of bat_v.throughput_override/bat_v.elp_interval must therefore only be compiled in when also BATMAN_V is enabled. Fixes: 71e957cd30a0 ("batman-adv: init ELP tweaking options only once") Signed-off-by: Sven Eckelmann <sven.eckelmann(a)open-mesh.com> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index dd6a5a2e..a8cda76 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -683,12 +683,14 @@ batadv_hardif_add_interface(struct net_device *net_dev) if (batadv_is_wifi_netdev(net_dev)) hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS; +#ifdef CONFIG_BATMAN_ADV_BATMAN_V /* enable link throughput auto-detection by setting the throughput * override to zero */ atomic_set(&hard_iface->bat_v.throughput_override, 0); atomic_set(&hard_iface->bat_v.elp_interval, 500); +#endif /* extra reference for return */ kref_init(&hard_iface->refcount); -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit 84f863520532ed2988726aad0cee78f19838ed13 Author: Sven Eckelmann <sven(a)narfation.org> Date: Wed May 11 08:16:47 2016 +0200 batman-adv: Remove unused include atomic.h The only atomic_* function was removed in the bat_v.c and thus the include should also be removed. Fixes: 71e957cd30a0 ("batman-adv: init ELP tweaking options only once") Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index 3c5d251..b9c2850 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -18,7 +18,6 @@ #include "bat_algo.h" #include "main.h" -#include <linux/atomic.h> #include <linux/bug.h> #include <linux/cache.h> #include <linux/init.h> -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit 3cb3f123007239a55111e67075f9a353191088e1 Merge: dbfacf6d106ccd90f7a56ce76d1bacbee6cf97e1 6863d3b59fd1f1bef3c4b86707a0b1c5d21e0a07 Author: Marek Lindner <mareklindner(a)neomailbox.ch> Date: Wed May 11 15:58:40 2016 +0800 Merge branch 'maint' into next diff --combined net/batman-adv/routing.c index ae850f2,0c0c30e..e3857ed --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@@ -100,6 -100,10 +100,6 @@@ static void _batadv_update_route(struc if (curr_router) batadv_neigh_node_put(curr_router); - /* increase refcount of new best neighbor */ - if (neigh_node && !kref_get_unless_zero(&neigh_node->refcount)) - neigh_node = NULL; - spin_lock_bh(&orig_node->neigh_list_lock); /* curr_router used earlier may not be the current orig_ifinfo->router * anymore because it was dereferenced outside of the neigh_list_lock @@@ -110,10 -114,6 +110,10 @@@ */ curr_router = rcu_dereference_protected(orig_ifinfo->router, true); + /* increase refcount of new best neighbor */ + if (neigh_node) + kref_get(&neigh_node->refcount); + rcu_assign_pointer(orig_ifinfo->router, neigh_node); spin_unlock_bh(&orig_node->neigh_list_lock); batadv_orig_ifinfo_put(orig_ifinfo); @@@ -163,18 -163,18 +163,18 @@@ out * doesn't change otherwise. * * Return: - * 0 if the packet is to be accepted. - * 1 if the packet is to be ignored. + * false if the packet is to be accepted. + * true if the packet is to be ignored. */ -int batadv_window_protected(struct batadv_priv *bat_priv, s32 seq_num_diff, - s32 seq_old_max_diff, unsigned long *last_reset, - bool *protection_started) +bool batadv_window_protected(struct batadv_priv *bat_priv, s32 seq_num_diff, + s32 seq_old_max_diff, unsigned long *last_reset, + bool *protection_started) { if (seq_num_diff <= -seq_old_max_diff || seq_num_diff >= BATADV_EXPECTED_SEQNO_RANGE) { if (!batadv_has_timed_out(*last_reset, BATADV_RESET_PROTECTION_MS)) - return 1; + return true; *last_reset = jiffies; if (protection_started) @@@ -183,7 -183,7 +183,7 @@@ "old packet received, start protection\n"); } - return 0; + return false; } bool batadv_check_management_packet(struct sk_buff *skb, @@@ -601,6 -601,7 +601,7 @@@ static int batadv_route_unicast_packet( struct batadv_unicast_packet *unicast_packet; struct ethhdr *ethhdr = eth_hdr(skb); int res, hdr_len, ret = NET_RX_DROP; + unsigned int len; unicast_packet = (struct batadv_unicast_packet *)skb->data; @@@ -641,6 -642,7 +642,7 @@@ if (hdr_len > 0) batadv_skb_set_priority(skb, hdr_len); + len = skb->len; res = batadv_send_skb_to_orig(skb, orig_node, recv_if); /* translate transmit result into receive result */ @@@ -648,7 -650,7 +650,7 @@@ /* skb was transmitted and consumed */ batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD); batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES, - skb->len + ETH_HLEN); + len + ETH_HLEN); ret = NET_RX_SUCCESS; } else if (res == NET_XMIT_POLICED) { @@@ -718,9 -720,8 +720,9 @@@ out return ret; } -static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, - struct sk_buff *skb, int hdr_len) { +static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, + struct sk_buff *skb, int hdr_len) +{ struct batadv_unicast_packet *unicast_packet; struct batadv_hard_iface *primary_if; struct batadv_orig_node *orig_node; @@@ -731,11 -732,11 +733,11 @@@ /* check if there is enough data before accessing it */ if (!pskb_may_pull(skb, hdr_len + ETH_HLEN)) - return 0; + return false; /* create a copy of the skb (in case of for re-routing) to modify it. */ if (skb_cow(skb, sizeof(*unicast_packet)) < 0) - return 0; + return false; unicast_packet = (struct batadv_unicast_packet *)skb->data; vid = batadv_get_vid(skb, hdr_len); @@@ -759,7 -760,7 +761,7 @@@ * table. If not, let the packet go untouched anyway because * there is nothing the node can do */ - return 1; + return true; } /* retrieve the TTVN known by this node for the packet destination. This @@@ -775,7 -776,7 +777,7 @@@ * not be possible to deliver it */ if (!orig_node) - return 0; + return false; curr_ttvn = (u8)atomic_read(&orig_node->last_ttvn); batadv_orig_node_put(orig_node); @@@ -786,7 -787,7 +788,7 @@@ */ is_old_ttvn = batadv_seq_before(unicast_packet->ttvn, curr_ttvn); if (!is_old_ttvn) - return 1; + return true; old_ttvn = unicast_packet->ttvn; /* the packet was forged based on outdated network information. Its @@@ -799,7 -800,7 +801,7 @@@ "Rerouting unicast packet to %pM (dst=%pM): TTVN mismatch old_ttvn=%u new_ttvn=%u\n", unicast_packet->dest, ethhdr->h_dest, old_ttvn, curr_ttvn); - return 1; + return true; } /* the packet has not been re-routed: either the destination is @@@ -807,14 -808,14 +809,14 @@@ * it is possible to drop the packet */ if (!batadv_is_my_client(bat_priv, ethhdr->h_dest, vid)) - return 0; + return false; /* update the header in order to let the packet be delivered to this * node's soft interface */ primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if) - return 0; + return false; ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr); @@@ -822,7 -823,7 +824,7 @@@ unicast_packet->ttvn = curr_ttvn; - return 1; + return true; } /** @@@ -913,7 -914,7 +915,7 @@@ int batadv_recv_unicast_packet(struct s hdr_size)) goto rx_success; - batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size, + batadv_interface_rx(recv_if->soft_iface, skb, hdr_size, orig_node); rx_success: @@@ -1123,7 -1124,8 +1125,7 @@@ int batadv_recv_bcast_packet(struct sk_ goto rx_success; /* broadcast for me */ - batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size, - orig_node); + batadv_interface_rx(recv_if->soft_iface, skb, hdr_size, orig_node); rx_success: ret = NET_RX_SUCCESS; -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit f3e525de06028d1ac7b000ed10e2289ec03b54d0 Merge: 84f863520532ed2988726aad0cee78f19838ed13 3cb3f123007239a55111e67075f9a353191088e1 Author: Marek Lindner <mareklindner(a)neomailbox.ch> Date: Wed May 11 15:59:00 2016 +0800 Merge branch 'next' -- linux integration

1 0

[linux-merge]linux integration; branch, merge/master, updated. v4.7-rc2-3178-gd0e4439
by postmaster＠open-mesh.org 29 Jun '16

29 Jun '16

The following commit has been merged in the merge/master branch: commit dbfacf6d106ccd90f7a56ce76d1bacbee6cf97e1 Merge: f808f1877a5abaf990e6c21daf63edadac849676 9685688ae7dd85804aec2f6ce760611551fe9635 Author: Marek Lindner <mareklindner(a)neomailbox.ch> Date: Sun May 8 06:32:33 2016 +0800 Merge branch 'maint' into next diff --combined net/batman-adv/bat_v.c index 602e03e,1f960c9..0a12e5c --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@@ -27,6 -27,7 +27,7 @@@ #include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/seq_file.h> + #include <linux/stddef.h> #include <linux/types.h> #include <linux/workqueue.h> @@@ -190,8 -191,8 +191,8 @@@ static void batadv_v_neigh_print(struc struct batadv_hard_iface *hard_iface; int batman_count = 0; - seq_printf(seq, " %-15s %s (%11s) [%10s]\n", "Neighbor", - "last-seen", "throughput", "IF"); + seq_puts(seq, + " Neighbor last-seen ( throughput) [ IF]\n"); rcu_read_lock(); list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { @@@ -230,8 -231,9 +231,8 @@@ static void batadv_v_orig_print(struct int batman_count = 0; u32 i; - seq_printf(seq, " %-15s %s (%11s) %17s [%10s]: %20s ...\n", - "Originator", "last-seen", "throughput", "Nexthop", - "outgoingIF", "Potential nexthops"); + seq_puts(seq, + " Originator last-seen ( throughput) Nexthop [outgoingIF]: Potential nexthops ...\n"); for (i = 0; i < hash->size; i++) { head = &hash->table[i]; -- linux integration

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