From 2744cefe03371cb6dda18649635e5dcbbb227ec9 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Thu, 3 Aug 2023 21:09:39 +0200 Subject: [PATCH 1/7] batman-adv: Start new development cycle This version will contain all the (major or even only minor) changes for Linux 6.6. The version number isn't a semantic version number with major and minor information. It is just encoding the year of the expected publishing as Linux -rc1 and the number of published versions this year (starting at 0). Signed-off-by: Simon Wunderlich --- net/batman-adv/main.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 156ed39eded1a..10007c5894a14 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -13,7 +13,7 @@ #define BATADV_DRIVER_DEVICE "batman-adv" #ifndef BATADV_SOURCE_VERSION -#define BATADV_SOURCE_VERSION "2023.1" +#define BATADV_SOURCE_VERSION "2023.3" #endif /* B.A.T.M.A.N. parameters */ From bbfb428a0cf6fbce4bcb34510a8eb0cf9b3841a4 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Wed, 26 Jul 2023 22:25:25 +0800 Subject: [PATCH 2/7] batman-adv: Remove unused declarations Since commit 335fbe0f5d25 ("batman-adv: tvlv - convert tt query packet to use tvlv unicast packets") batadv_recv_tt_query() is not used. And commit 122edaa05940 ("batman-adv: tvlv - convert roaming adv packet to use tvlv unicast packets") left behind batadv_recv_roam_adv(). Signed-off-by: YueHaibing Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/routing.h | 4 ---- 1 file changed, 4 deletions(-) diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index 5f387786e9a73..afd15b3879f1c 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -27,10 +27,6 @@ int batadv_recv_frag_packet(struct sk_buff *skb, struct batadv_hard_iface *iface); int batadv_recv_bcast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); -int batadv_recv_tt_query(struct sk_buff *skb, - struct batadv_hard_iface *recv_if); -int batadv_recv_roam_adv(struct sk_buff *skb, - struct batadv_hard_iface *recv_if); int batadv_recv_unicast_tvlv(struct sk_buff *skb, struct batadv_hard_iface *recv_if); int batadv_recv_unhandled_unicast_packet(struct sk_buff *skb, From e4b817804579624b47823d87e647ec6c3d3ab827 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Thu, 27 Jul 2023 10:13:42 +0200 Subject: [PATCH 3/7] batman-adv: Avoid magic value for minimum MTU The header linux/if_ether.h already defines a constant for the minimum MTU. So simply use it instead of having a magic constant in the code. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/soft-interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index d3fdf82282afe..f7947fad06f25 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -154,7 +154,7 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) { /* check ranges */ - if (new_mtu < 68 || new_mtu > batadv_hardif_min_mtu(dev)) + if (new_mtu < ETH_MIN_MTU || new_mtu > batadv_hardif_min_mtu(dev)) return -EINVAL; dev->mtu = new_mtu; From 112cbcb4af90c4b108b120a28089872d2234a350 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Thu, 27 Jul 2023 10:13:43 +0200 Subject: [PATCH 4/7] batman-adv: Check hardif MTU against runtime MTU If the MTU of the soft/mesh interface was already reduced (enough), it is not necessary to print a warning about a hard interface not having a MTU to transport ethernet payloads of 1500 bytes. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/hard-interface.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 41c1ad33d009f..5a4ff9a81e743 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -9,6 +9,7 @@ #include #include +#include #include #include #include @@ -699,9 +700,14 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, struct batadv_priv *bat_priv; __be16 ethertype = htons(ETH_P_BATMAN); int max_header_len = batadv_max_header_len(); + unsigned int required_mtu; + unsigned int hardif_mtu; int ret; - if (hard_iface->net_dev->mtu < ETH_MIN_MTU + max_header_len) + hardif_mtu = READ_ONCE(hard_iface->net_dev->mtu); + required_mtu = READ_ONCE(soft_iface->mtu) + max_header_len; + + if (hardif_mtu < ETH_MIN_MTU + max_header_len) return -EINVAL; if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) @@ -734,18 +740,18 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, hard_iface->net_dev->name); if (atomic_read(&bat_priv->fragmentation) && - hard_iface->net_dev->mtu < ETH_DATA_LEN + max_header_len) + hardif_mtu < required_mtu) batadv_info(hard_iface->soft_iface, "The MTU of interface %s is too small (%i) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to %i would solve the problem.\n", - hard_iface->net_dev->name, hard_iface->net_dev->mtu, - ETH_DATA_LEN + max_header_len); + hard_iface->net_dev->name, hardif_mtu, + required_mtu); if (!atomic_read(&bat_priv->fragmentation) && - hard_iface->net_dev->mtu < ETH_DATA_LEN + max_header_len) + hardif_mtu < required_mtu) batadv_info(hard_iface->soft_iface, "The MTU of interface %s is too small (%i) to handle the transport of batman-adv packets. If you experience problems getting traffic through try increasing the MTU to %i.\n", - hard_iface->net_dev->name, hard_iface->net_dev->mtu, - ETH_DATA_LEN + max_header_len); + hard_iface->net_dev->name, hardif_mtu, + required_mtu); if (batadv_hardif_is_iface_up(hard_iface)) batadv_hardif_activate_interface(hard_iface); From 950c92bbaa8f16fc71485f4d564d429a9e4cc9fd Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Wed, 2 Aug 2023 10:16:49 +0200 Subject: [PATCH 5/7] batman-adv: Drop unused function batadv_gw_bandwidth_set This function is no longer used since the sysfs support was removed from batman-adv. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/gateway_common.c | 88 --------------------------------- net/batman-adv/gateway_common.h | 2 - 2 files changed, 90 deletions(-) diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index 6a964a773f57c..d9632607f92b6 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -9,7 +9,6 @@ #include #include -#include #include #include #include @@ -90,42 +89,6 @@ bool batadv_parse_throughput(struct net_device *net_dev, char *buff, return true; } -/** - * batadv_parse_gw_bandwidth() - parse supplied string buffer to extract - * download and upload bandwidth information - * @net_dev: the soft interface net device - * @buff: string buffer to parse - * @down: pointer holding the returned download bandwidth information - * @up: pointer holding the returned upload bandwidth information - * - * Return: false on parse error and true otherwise. - */ -static bool batadv_parse_gw_bandwidth(struct net_device *net_dev, char *buff, - u32 *down, u32 *up) -{ - char *slash_ptr; - bool ret; - - slash_ptr = strchr(buff, '/'); - if (slash_ptr) - *slash_ptr = 0; - - ret = batadv_parse_throughput(net_dev, buff, "download gateway speed", - down); - if (!ret) - return false; - - /* we also got some upload info */ - if (slash_ptr) { - ret = batadv_parse_throughput(net_dev, slash_ptr + 1, - "upload gateway speed", up); - if (!ret) - return false; - } - - return true; -} - /** * batadv_gw_tvlv_container_update() - update the gw tvlv container after * gateway setting change @@ -155,57 +118,6 @@ void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv) } } -/** - * batadv_gw_bandwidth_set() - Parse and set download/upload gateway bandwidth - * from supplied string buffer - * @net_dev: netdev struct of the soft interface - * @buff: the buffer containing the user data - * @count: number of bytes in the buffer - * - * Return: 'count' on success or a negative error code in case of failure - */ -ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff, - size_t count) -{ - struct batadv_priv *bat_priv = netdev_priv(net_dev); - u32 down_curr; - u32 up_curr; - u32 down_new = 0; - u32 up_new = 0; - bool ret; - - down_curr = (unsigned int)atomic_read(&bat_priv->gw.bandwidth_down); - up_curr = (unsigned int)atomic_read(&bat_priv->gw.bandwidth_up); - - ret = batadv_parse_gw_bandwidth(net_dev, buff, &down_new, &up_new); - if (!ret) - return -EINVAL; - - if (!down_new) - down_new = 1; - - if (!up_new) - up_new = down_new / 5; - - if (!up_new) - up_new = 1; - - if (down_curr == down_new && up_curr == up_new) - return count; - - batadv_gw_reselect(bat_priv); - batadv_info(net_dev, - "Changing gateway bandwidth from: '%u.%u/%u.%u MBit' to: '%u.%u/%u.%u MBit'\n", - down_curr / 10, down_curr % 10, up_curr / 10, up_curr % 10, - down_new / 10, down_new % 10, up_new / 10, up_new % 10); - - atomic_set(&bat_priv->gw.bandwidth_down, down_new); - atomic_set(&bat_priv->gw.bandwidth_up, up_new); - batadv_gw_tvlv_container_update(bat_priv); - - return count; -} - /** * batadv_gw_tvlv_ogm_handler_v1() - process incoming gateway tvlv container * @bat_priv: the bat priv with all the soft interface information diff --git a/net/batman-adv/gateway_common.h b/net/batman-adv/gateway_common.h index 87c37f9072614..cb2e72d7ab141 100644 --- a/net/batman-adv/gateway_common.h +++ b/net/batman-adv/gateway_common.h @@ -27,8 +27,6 @@ enum batadv_bandwidth_units { #define BATADV_GW_MODE_CLIENT_NAME "client" #define BATADV_GW_MODE_SERVER_NAME "server" -ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff, - size_t count); void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv); void batadv_gw_init(struct batadv_priv *bat_priv); void batadv_gw_free(struct batadv_priv *bat_priv); From 02e61f06a97e7ba73fa44046d6da097e5c2aacc8 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Wed, 2 Aug 2023 10:24:20 +0200 Subject: [PATCH 6/7] batman-adv: Keep batadv_netlink_notify_* static The batadv_netlink_notify_*() functions are not used by any other source file. Just keep them local to netlink.c to get informed by the compiler when they are not used anymore. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/netlink.c | 10 +++++----- net/batman-adv/netlink.h | 6 ------ 2 files changed, 5 insertions(+), 11 deletions(-) diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index ad5714f737be2..b6c512ce67043 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -377,7 +377,7 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, * * Return: 0 on success, < 0 on error */ -int batadv_netlink_notify_mesh(struct batadv_priv *bat_priv) +static int batadv_netlink_notify_mesh(struct batadv_priv *bat_priv) { struct sk_buff *msg; int ret; @@ -858,8 +858,8 @@ static int batadv_netlink_hardif_fill(struct sk_buff *msg, * * Return: 0 on success, < 0 on error */ -int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv, - struct batadv_hard_iface *hard_iface) +static int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv, + struct batadv_hard_iface *hard_iface) { struct sk_buff *msg; int ret; @@ -1073,8 +1073,8 @@ static int batadv_netlink_vlan_fill(struct sk_buff *msg, * * Return: 0 on success, < 0 on error */ -int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) +static int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv, + struct batadv_softif_vlan *vlan) { struct sk_buff *msg; int ret; diff --git a/net/batman-adv/netlink.h b/net/batman-adv/netlink.h index 48102cc7490c7..876d2806a67d2 100644 --- a/net/batman-adv/netlink.h +++ b/net/batman-adv/netlink.h @@ -21,12 +21,6 @@ int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst, u8 result, u32 test_time, u64 total_bytes, u32 cookie); -int batadv_netlink_notify_mesh(struct batadv_priv *bat_priv); -int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv, - struct batadv_hard_iface *hard_iface); -int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan); - extern struct genl_family batadv_netlink_family; #endif /* _NET_BATMAN_ADV_NETLINK_H_ */ From 6f96d46f9a1ad1c02589b598c56ea881094129d8 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Wed, 2 Aug 2023 10:39:28 +0200 Subject: [PATCH 7/7] batman-adv: Drop per algo GW section class code This code was only used in the past for the sysfs interface. But since this was replace with netlink, it was never executed. The function pointer was only checked to figure out whether the limit 255 (B.A.T.M.A.N. IV) or 2**32-1 (B.A.T.M.A.N. V) should be used as limit. So instead of keeping the function pointer, just store the limits directly in struct batadv_algo_gw_ops. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/bat_iv_ogm.c | 1 + net/batman-adv/bat_v.c | 23 +--------- net/batman-adv/gateway_common.c | 74 +-------------------------------- net/batman-adv/gateway_common.h | 5 --- net/batman-adv/netlink.c | 5 +-- net/batman-adv/types.h | 7 ++-- 6 files changed, 8 insertions(+), 107 deletions(-) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 828fb393ee94a..74b49c35ddc14 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -2516,6 +2516,7 @@ static struct batadv_algo_ops batadv_batman_iv __read_mostly = { }, .gw = { .init_sel_class = batadv_iv_init_sel_class, + .sel_class_max = BATADV_TQ_MAX_VALUE, .get_best_gw_node = batadv_iv_gw_get_best_gw_node, .is_eligible = batadv_iv_gw_is_eligible, .dump = batadv_iv_gw_dump, diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index 54e41fc709c37..ac11f1f08db0f 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -34,7 +35,6 @@ #include "bat_v_elp.h" #include "bat_v_ogm.h" #include "gateway_client.h" -#include "gateway_common.h" #include "hard-interface.h" #include "hash.h" #include "log.h" @@ -512,25 +512,6 @@ static void batadv_v_init_sel_class(struct batadv_priv *bat_priv) atomic_set(&bat_priv->gw.sel_class, 50); } -static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv, - char *buff, size_t count) -{ - u32 old_class, class; - - if (!batadv_parse_throughput(bat_priv->soft_iface, buff, - "B.A.T.M.A.N. V GW selection class", - &class)) - return -EINVAL; - - old_class = atomic_read(&bat_priv->gw.sel_class); - atomic_set(&bat_priv->gw.sel_class, class); - - if (old_class != class) - batadv_gw_reselect(bat_priv); - - return count; -} - /** * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW * @gw_node: the GW to retrieve the metric for @@ -818,7 +799,7 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = { }, .gw = { .init_sel_class = batadv_v_init_sel_class, - .store_sel_class = batadv_v_store_sel_class, + .sel_class_max = U32_MAX, .get_best_gw_node = batadv_v_gw_get_best_gw_node, .is_eligible = batadv_v_gw_is_eligible, .dump = batadv_v_gw_dump, diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index d9632607f92b6..2dd36ef03c841 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -9,86 +9,14 @@ #include #include -#include -#include -#include -#include #include -#include +#include #include #include #include "gateway_client.h" -#include "log.h" #include "tvlv.h" -/** - * batadv_parse_throughput() - parse supplied string buffer to extract - * throughput information - * @net_dev: the soft interface net device - * @buff: string buffer to parse - * @description: text shown when throughput string cannot be parsed - * @throughput: pointer holding the returned throughput information - * - * Return: false on parse error and true otherwise. - */ -bool batadv_parse_throughput(struct net_device *net_dev, char *buff, - const char *description, u32 *throughput) -{ - enum batadv_bandwidth_units bw_unit_type = BATADV_BW_UNIT_KBIT; - u64 lthroughput; - char *tmp_ptr; - int ret; - - if (strlen(buff) > 4) { - tmp_ptr = buff + strlen(buff) - 4; - - if (strncasecmp(tmp_ptr, "mbit", 4) == 0) - bw_unit_type = BATADV_BW_UNIT_MBIT; - - if (strncasecmp(tmp_ptr, "kbit", 4) == 0 || - bw_unit_type == BATADV_BW_UNIT_MBIT) - *tmp_ptr = '\0'; - } - - ret = kstrtou64(buff, 10, <hroughput); - if (ret) { - batadv_err(net_dev, - "Invalid throughput speed for %s: %s\n", - description, buff); - return false; - } - - switch (bw_unit_type) { - case BATADV_BW_UNIT_MBIT: - /* prevent overflow */ - if (U64_MAX / 10 < lthroughput) { - batadv_err(net_dev, - "Throughput speed for %s too large: %s\n", - description, buff); - return false; - } - - lthroughput *= 10; - break; - case BATADV_BW_UNIT_KBIT: - default: - lthroughput = div_u64(lthroughput, 100); - break; - } - - if (lthroughput > U32_MAX) { - batadv_err(net_dev, - "Throughput speed for %s too large: %s\n", - description, buff); - return false; - } - - *throughput = lthroughput; - - return true; -} - /** * batadv_gw_tvlv_container_update() - update the gw tvlv container after * gateway setting change diff --git a/net/batman-adv/gateway_common.h b/net/batman-adv/gateway_common.h index cb2e72d7ab141..5d097d6a1dd95 100644 --- a/net/batman-adv/gateway_common.h +++ b/net/batman-adv/gateway_common.h @@ -9,9 +9,6 @@ #include "main.h" -#include -#include - /** * enum batadv_bandwidth_units - bandwidth unit types */ @@ -30,7 +27,5 @@ enum batadv_bandwidth_units { void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv); void batadv_gw_init(struct batadv_priv *bat_priv); void batadv_gw_free(struct batadv_priv *bat_priv); -bool batadv_parse_throughput(struct net_device *net_dev, char *buff, - const char *description, u32 *throughput); #endif /* _NET_BATMAN_ADV_GATEWAY_COMMON_H_ */ diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index b6c512ce67043..d37872b34281d 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -548,15 +548,12 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) * algorithm in use implements the GW API */ - u32 sel_class_max = 0xffffffffu; + u32 sel_class_max = bat_priv->algo_ops->gw.sel_class_max; u32 sel_class; attr = info->attrs[BATADV_ATTR_GW_SEL_CLASS]; sel_class = nla_get_u32(attr); - if (!bat_priv->algo_ops->gw.store_sel_class) - sel_class_max = BATADV_TQ_MAX_VALUE; - if (sel_class >= 1 && sel_class <= sel_class_max) { atomic_set(&bat_priv->gw.sel_class, sel_class); batadv_gw_reselect(bat_priv); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index ca9449ec9836a..54c2b8fa48ccd 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -2191,11 +2191,10 @@ struct batadv_algo_gw_ops { void (*init_sel_class)(struct batadv_priv *bat_priv); /** - * @store_sel_class: parse and stores a new GW selection class - * (optional) + * @sel_class_max: maximum allowed GW selection class */ - ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff, - size_t count); + u32 sel_class_max; + /** * @get_best_gw_node: select the best GW from the list of available * nodes (optional)