commits August 2023

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[batman-adv] main,main: Merge branch 'stable' (a3a089b0)
by postmaster＠open-mesh.org 09 Aug '23

09 Aug '23

Repository : ssh://git@diktynna/batman-adv On branches: main,main >--------------------------------------------------------------- commit a3a089b06c7f8d6f167660c7261ea35fb50ed1f1 Merge: 7225bc2a 840f089c Author: Sven Eckelmann <sven(a)narfation.org> Date: Wed Aug 9 17:30:30 2023 +0200 Merge branch 'stable' >--------------------------------------------------------------- a3a089b06c7f8d6f167660c7261ea35fb50ed1f1 net/batman-adv/bat_v_ogm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

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[batman-adv] main,stable,main,stable: batman-adv: Fix batadv_v_ogm_aggr_send memory leak (840f089c)
by postmaster＠open-mesh.org 09 Aug '23

09 Aug '23

Repository : ssh://git@diktynna/batman-adv On branches: main,stable,main,stable >--------------------------------------------------------------- commit 840f089c1c680e19e4646599df41586a7f70c936 Author: Remi Pommarel <repk(a)triplefau.lt> Date: Wed Aug 9 17:29:13 2023 +0200 batman-adv: Fix batadv_v_ogm_aggr_send memory leak When batadv_v_ogm_aggr_send is called for an inactive interface, the skb is silently dropped by batadv_v_ogm_send_to_if() but never freed causing the following memory leak: unreferenced object 0xffff00000c164800 (size 512): comm "kworker/u8:1", pid 2648, jiffies 4295122303 (age 97.656s) hex dump (first 32 bytes): 00 80 af 09 00 00 ff ff e1 09 00 00 75 01 60 83 ............u.`. 1f 00 00 00 b8 00 00 00 15 00 05 00 da e3 d3 64 ...............d backtrace: [<0000000007ad20f6>] __kmalloc_track_caller+0x1a8/0x310 [<00000000d1029e55>] kmalloc_reserve.constprop.0+0x70/0x13c [<000000008b9d4183>] __alloc_skb+0xec/0x1fc [<00000000c7af5051>] __netdev_alloc_skb+0x48/0x23c [<00000000642ee5f5>] batadv_v_ogm_aggr_send+0x50/0x36c [<0000000088660bd7>] batadv_v_ogm_aggr_work+0x24/0x40 [<0000000042fc2606>] process_one_work+0x3b0/0x610 [<000000002f2a0b1c>] worker_thread+0xa0/0x690 [<0000000059fae5d4>] kthread+0x1fc/0x210 [<000000000c587d3a>] ret_from_fork+0x10/0x20 Free the skb in that case to fix this leak. Cc: stable(a)vger.kernel.org Fixes: 0da0035942d4 ("batman-adv: OGMv2 - add basic infrastructure") Signed-off-by: Remi Pommarel <repk(a)triplefau.lt> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> >--------------------------------------------------------------- 840f089c1c680e19e4646599df41586a7f70c936 net/batman-adv/bat_v_ogm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c index 84eac41d..e503ee0d 100644 --- a/net/batman-adv/bat_v_ogm.c +++ b/net/batman-adv/bat_v_ogm.c @@ -123,8 +123,10 @@ static void batadv_v_ogm_send_to_if(struct sk_buff *skb, { struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); - if (hard_iface->if_status != BATADV_IF_ACTIVE) + if (hard_iface->if_status != BATADV_IF_ACTIVE) { + kfree_skb(skb); return; + } batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_TX); batadv_add_counter(bat_priv, BATADV_CNT_MGMT_TX_BYTES,

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[linux-merge]linux integration; annotated tag, v6.5-rc5, created. v6.5-rc5
by postmaster＠open-mesh.org 06 Aug '23

06 Aug '23

The annotated tag, v6.5-rc5 has been created at a2d347d8f5a92014f809bd13e0639ef7a13e8dba (tag) tagging 52a93d39b17dc7eb98b6aa3edb93943248e03b2f (commit) replaces v6.5-rc4 tagged by Linus Torvalds on Sun Aug 6 15:07:51 2023 -0700 - Shortlog ------------------------------------------------------------ Linux 6.5-rc5 -----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmTQGbceHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGnKQIAIfTF0IfTKMun+N7 3whE78OpgJCH3L/Mc+VlhybabdbtxebsCNoaxRpFI6kRZenI5xVvMjlSnoctAppY m+ltVsPDND39Rs71UGY+8+Wp8rmZuU3BcuJfB3AA3TobPEcNlJ7ETs+Js0B4lqgj RrZ6tmyWiu+VRMTwwkdzI3ZtKijVz4Lm0y2DmEirANHXgUxSeC/BQw6/SH8gv9l7 WNFSJ5NwDWwzQRJeEq0G0LujETDvWnxtpv7CMrl2CRUJQ3ozm/JZzITmSiAS540P 0V1gsAgRnBlrM5vValok0nlCUY61AfMMu8Pxxs0JaIHRH1tQZ6pkuM+jGX5MSNOv 7PfhSjE= =oaQ5 -----END PGP SIGNATURE----- ----------------------------------------------------------------------- -- linux integration

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[batman-adv] main,main: Merge branch 'stable' (7225bc2a)
by postmaster＠open-mesh.org 05 Aug '23

05 Aug '23

Repository : ssh://git@diktynna/batman-adv On branches: main,main >--------------------------------------------------------------- commit 7225bc2a99160422e7d898602818154ac23f956f Merge: ed12d0c1 26fce59c Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat Aug 5 08:06:23 2023 +0200 Merge branch 'stable' >--------------------------------------------------------------- 7225bc2a99160422e7d898602818154ac23f956f net/batman-adv/translation-table.c | 1 - 1 file changed, 1 deletion(-)

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[batman-adv] main,stable,main,stable: batman-adv: Fix TT global entry leak when client roamed back (26fce59c)
by postmaster＠open-mesh.org 05 Aug '23

05 Aug '23

Repository : ssh://git@diktynna/batman-adv On branches: main,stable,main,stable >--------------------------------------------------------------- commit 26fce59c70729e07034de966ac5fd2d5c1f2d597 Author: Remi Pommarel <repk(a)triplefau.lt> Date: Fri Aug 4 11:39:36 2023 +0200 batman-adv: Fix TT global entry leak when client roamed back When a client roamed back to a node before it got time to destroy the pending local entry (i.e. within the same originator interval) the old global one is directly removed from hash table and left as such. But because this entry had an extra reference taken at lookup (i.e using batadv_tt_global_hash_find) there is no way its memory will be reclaimed at any time causing the following memory leak: unreferenced object 0xffff0000073c8000 (size 18560): comm "softirq", pid 0, jiffies 4294907738 (age 228.644s) hex dump (first 32 bytes): 06 31 ac 12 c7 7a 05 00 01 00 00 00 00 00 00 00 .1...z.......... 2c ad be 08 00 80 ff ff 6c b6 be 08 00 80 ff ff ,.......l....... backtrace: [<00000000ee6e0ffa>] kmem_cache_alloc+0x1b4/0x300 [<000000000ff2fdbc>] batadv_tt_global_add+0x700/0xe20 [<00000000443897c7>] _batadv_tt_update_changes+0x21c/0x790 [<000000005dd90463>] batadv_tt_update_changes+0x3c/0x110 [<00000000a2d7fc57>] batadv_tt_tvlv_unicast_handler_v1+0xafc/0xe10 [<0000000011793f2a>] batadv_tvlv_containers_process+0x168/0x2b0 [<00000000b7cbe2ef>] batadv_recv_unicast_tvlv+0xec/0x1f4 [<0000000042aef1d8>] batadv_batman_skb_recv+0x25c/0x3a0 [<00000000bbd8b0a2>] __netif_receive_skb_core.isra.0+0x7a8/0xe90 [<000000004033d428>] __netif_receive_skb_one_core+0x64/0x74 [<000000000f39a009>] __netif_receive_skb+0x48/0xe0 [<00000000f2cd8888>] process_backlog+0x174/0x344 [<00000000507d6564>] __napi_poll+0x58/0x1f4 [<00000000b64ef9eb>] net_rx_action+0x504/0x590 [<00000000056fa5e4>] _stext+0x1b8/0x418 [<00000000878879d6>] run_ksoftirqd+0x74/0xa4 unreferenced object 0xffff00000bae1a80 (size 56): comm "softirq", pid 0, jiffies 4294910888 (age 216.092s) hex dump (first 32 bytes): 00 78 b1 0b 00 00 ff ff 0d 50 00 00 00 00 00 00 .x.......P...... 00 00 00 00 00 00 00 00 50 c8 3c 07 00 00 ff ff ........P.<..... backtrace: [<00000000ee6e0ffa>] kmem_cache_alloc+0x1b4/0x300 [<00000000d9aaa49e>] batadv_tt_global_add+0x53c/0xe20 [<00000000443897c7>] _batadv_tt_update_changes+0x21c/0x790 [<000000005dd90463>] batadv_tt_update_changes+0x3c/0x110 [<00000000a2d7fc57>] batadv_tt_tvlv_unicast_handler_v1+0xafc/0xe10 [<0000000011793f2a>] batadv_tvlv_containers_process+0x168/0x2b0 [<00000000b7cbe2ef>] batadv_recv_unicast_tvlv+0xec/0x1f4 [<0000000042aef1d8>] batadv_batman_skb_recv+0x25c/0x3a0 [<00000000bbd8b0a2>] __netif_receive_skb_core.isra.0+0x7a8/0xe90 [<000000004033d428>] __netif_receive_skb_one_core+0x64/0x74 [<000000000f39a009>] __netif_receive_skb+0x48/0xe0 [<00000000f2cd8888>] process_backlog+0x174/0x344 [<00000000507d6564>] __napi_poll+0x58/0x1f4 [<00000000b64ef9eb>] net_rx_action+0x504/0x590 [<00000000056fa5e4>] _stext+0x1b8/0x418 [<00000000878879d6>] run_ksoftirqd+0x74/0xa4 Releasing the extra reference from batadv_tt_global_hash_find even at roam back when batadv_tt_global_free is called fixes this memory leak. Cc: stable(a)vger.kernel.org Fixes: 2443ba383c7d ("batman-adv: roaming handling mechanism redesign") Signed-off-by: Remi Pommarel <repk(a)triplefau.lt> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> >--------------------------------------------------------------- 26fce59c70729e07034de966ac5fd2d5c1f2d597 net/batman-adv/translation-table.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 36ca3125..b95c3676 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -774,7 +774,6 @@ check_roaming: if (roamed_back) { batadv_tt_global_free(bat_priv, tt_global, "Roaming canceled"); - tt_global = NULL; } else { /* The global entry has to be marked as ROAMING and * has to be kept for consistency purpose

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[linux-merge]linux integration; branch, batadv/net, updated. v6.5-rc1-4-gd25ddb7e788d
by postmaster＠open-mesh.org 05 Aug '23

05 Aug '23

The following commit has been merged in the batadv/net branch: commit d25ddb7e788d34cf27ff1738d11a87cb4b67d446 Author: Remi Pommarel <repk(a)triplefau.lt> Date: Fri Aug 4 11:39:36 2023 +0200 batman-adv: Fix TT global entry leak when client roamed back When a client roamed back to a node before it got time to destroy the pending local entry (i.e. within the same originator interval) the old global one is directly removed from hash table and left as such. But because this entry had an extra reference taken at lookup (i.e using batadv_tt_global_hash_find) there is no way its memory will be reclaimed at any time causing the following memory leak: unreferenced object 0xffff0000073c8000 (size 18560): comm "softirq", pid 0, jiffies 4294907738 (age 228.644s) hex dump (first 32 bytes): 06 31 ac 12 c7 7a 05 00 01 00 00 00 00 00 00 00 .1...z.......... 2c ad be 08 00 80 ff ff 6c b6 be 08 00 80 ff ff ,.......l....... backtrace: [<00000000ee6e0ffa>] kmem_cache_alloc+0x1b4/0x300 [<000000000ff2fdbc>] batadv_tt_global_add+0x700/0xe20 [<00000000443897c7>] _batadv_tt_update_changes+0x21c/0x790 [<000000005dd90463>] batadv_tt_update_changes+0x3c/0x110 [<00000000a2d7fc57>] batadv_tt_tvlv_unicast_handler_v1+0xafc/0xe10 [<0000000011793f2a>] batadv_tvlv_containers_process+0x168/0x2b0 [<00000000b7cbe2ef>] batadv_recv_unicast_tvlv+0xec/0x1f4 [<0000000042aef1d8>] batadv_batman_skb_recv+0x25c/0x3a0 [<00000000bbd8b0a2>] __netif_receive_skb_core.isra.0+0x7a8/0xe90 [<000000004033d428>] __netif_receive_skb_one_core+0x64/0x74 [<000000000f39a009>] __netif_receive_skb+0x48/0xe0 [<00000000f2cd8888>] process_backlog+0x174/0x344 [<00000000507d6564>] __napi_poll+0x58/0x1f4 [<00000000b64ef9eb>] net_rx_action+0x504/0x590 [<00000000056fa5e4>] _stext+0x1b8/0x418 [<00000000878879d6>] run_ksoftirqd+0x74/0xa4 unreferenced object 0xffff00000bae1a80 (size 56): comm "softirq", pid 0, jiffies 4294910888 (age 216.092s) hex dump (first 32 bytes): 00 78 b1 0b 00 00 ff ff 0d 50 00 00 00 00 00 00 .x.......P...... 00 00 00 00 00 00 00 00 50 c8 3c 07 00 00 ff ff ........P.<..... backtrace: [<00000000ee6e0ffa>] kmem_cache_alloc+0x1b4/0x300 [<00000000d9aaa49e>] batadv_tt_global_add+0x53c/0xe20 [<00000000443897c7>] _batadv_tt_update_changes+0x21c/0x790 [<000000005dd90463>] batadv_tt_update_changes+0x3c/0x110 [<00000000a2d7fc57>] batadv_tt_tvlv_unicast_handler_v1+0xafc/0xe10 [<0000000011793f2a>] batadv_tvlv_containers_process+0x168/0x2b0 [<00000000b7cbe2ef>] batadv_recv_unicast_tvlv+0xec/0x1f4 [<0000000042aef1d8>] batadv_batman_skb_recv+0x25c/0x3a0 [<00000000bbd8b0a2>] __netif_receive_skb_core.isra.0+0x7a8/0xe90 [<000000004033d428>] __netif_receive_skb_one_core+0x64/0x74 [<000000000f39a009>] __netif_receive_skb+0x48/0xe0 [<00000000f2cd8888>] process_backlog+0x174/0x344 [<00000000507d6564>] __napi_poll+0x58/0x1f4 [<00000000b64ef9eb>] net_rx_action+0x504/0x590 [<00000000056fa5e4>] _stext+0x1b8/0x418 [<00000000878879d6>] run_ksoftirqd+0x74/0xa4 Releasing the extra reference from batadv_tt_global_hash_find even at roam back when batadv_tt_global_free is called fixes this memory leak. Cc: stable(a)vger.kernel.org Fixes: 068ee6e204e1 ("batman-adv: roaming handling mechanism redesign") Signed-off-by: Remi Pommarel <repk(a)triplefau.lt> Signed-off-by; Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 36ca31252a73..b95c36765d04 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -774,7 +774,6 @@ check_roaming: if (roamed_back) { batadv_tt_global_free(bat_priv, tt_global, "Roaming canceled"); - tt_global = NULL; } else { /* The global entry has to be marked as ROAMING and * has to be kept for consistency purpose -- linux integration

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[linux-merge]linux integration; branch, batadv/net-next, updated. v6.5-rc1-10-gae682b2330e6
by postmaster＠open-mesh.org 03 Aug '23

03 Aug '23

The following commit has been merged in the batadv/net-next branch: commit a9aab4ed51fcb4f2be511a97e2fddbc7c44291a0 Author: Sven Eckelmann <sven(a)narfation.org> Date: Wed Aug 2 10:16:49 2023 +0200 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 <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index 6a964a773f57..d9632607f92b 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -9,7 +9,6 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> -#include <linux/errno.h> #include <linux/kstrtox.h> #include <linux/limits.h> #include <linux/math64.h> @@ -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 87c37f907261..cb2e72d7ab14 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); -- linux integration

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[linux-merge]linux integration; branch, batadv/net-next, updated. v6.5-rc1-10-gae682b2330e6
by postmaster＠open-mesh.org 03 Aug '23

03 Aug '23

The following commit has been merged in the batadv/net-next branch: commit 120f42fb1fd19f735f6c9d1c70a6e250ea049b85 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Thu Jul 20 06:35:55 2023 +0200 batman-adv: mcast: shrink tracker packet after scrubbing Remove all zero MAC address entries (00:00:00:00:00:00) from a multicast packet's tracker TVLV before transmitting it and update all headers accordingly. This way, instead of keeping the multicast packet at a constant size throughout its journey through the mesh, it will become more lightweight, smaller with every interested receiver on the way and on each splitting intersection. Which can save some valuable bandwidth. Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/multicast_forw.c b/net/batman-adv/multicast_forw.c index d0f75a63de2a..d7b1aabd4b72 100644 --- a/net/batman-adv/multicast_forw.c +++ b/net/batman-adv/multicast_forw.c @@ -712,6 +712,200 @@ scrub_next: } } +/** + * batadv_mcast_forw_shrink_pack_dests() - pack destinations of a tracker TVLV + * @skb: the batman-adv multicast packet to compact destinations in + * + * Compacts the originator destination MAC addresses in the multicast tracker + * TVLV of the given multicast packet. This is done by moving all non-zero + * MAC addresses in direction of the skb head and all zero MAC addresses in skb + * tail direction, within the multicast tracker TVLV. + * + * Return: The number of consecutive zero MAC address destinations which are + * now at the end of the multicast tracker TVLV. + */ +static int batadv_mcast_forw_shrink_pack_dests(struct sk_buff *skb) +{ + struct batadv_tvlv_mcast_tracker *mcast_tracker; + u16 num_dests_slot, num_dests_filler; + unsigned char *skb_net_hdr; + u8 *slot, *filler; + + skb_net_hdr = skb_network_header(skb); + mcast_tracker = (struct batadv_tvlv_mcast_tracker *)skb_net_hdr; + num_dests_slot = ntohs(mcast_tracker->num_dests); + + slot = (u8 *)mcast_tracker + sizeof(*mcast_tracker); + + if (!num_dests_slot) + return 0; + + num_dests_filler = num_dests_slot - 1; + filler = slot + ETH_ALEN; + + batadv_mcast_forw_tracker_for_each_dest(slot, num_dests_slot) { + /* find an empty slot */ + if (!is_zero_ether_addr(slot)) + continue; + + /* keep filler ahead of slot */ + if (filler <= slot) { + num_dests_filler = num_dests_slot - 1; + filler = slot + ETH_ALEN; + } + + /* find a candidate to fill the empty slot */ + batadv_mcast_forw_tracker_for_each_dest(filler, + num_dests_filler) { + if (is_zero_ether_addr(filler)) + continue; + + ether_addr_copy(slot, filler); + eth_zero_addr(filler); + goto cont_next_slot; + } + + /* could not find a filler, we can stop + * - and must not advance the slot pointer! + */ + if (!num_dests_filler) + break; + +cont_next_slot: + continue; + } + + /* num_dests_slot is the amount of reduced destinations */ + return num_dests_slot; +} + +/** + * batadv_mcast_forw_shrink_align_offset() - get new alignment offset + * @num_dests_old: the old, to be updated amount of destination nodes + * @num_dests_reduce: the number of destinations that were removed + * + * Calculates the amount of potential extra alignment offset that is needed to + * adjust the TVLV padding after the change in destination nodes. + * + * Return: + * 0: If no change to padding is needed. + * 2: If padding needs to be removed. + * -2: If padding needs to be added. + */ +static short +batadv_mcast_forw_shrink_align_offset(unsigned int num_dests_old, + unsigned int num_dests_reduce) +{ + /* even amount of removed destinations -> no alignment change */ + if (!(num_dests_reduce % 2)) + return 0; + + /* even to odd amount of destinations -> remove padding */ + if (!(num_dests_old % 2)) + return 2; + + /* odd to even amount of destinations -> add padding */ + return -2; +} + +/** + * batadv_mcast_forw_shrink_update_headers() - update shrunk mc packet headers + * @skb: the batman-adv multicast packet to update headers of + * @num_dests_reduce: the number of destinations that were removed + * + * This updates any fields of a batman-adv multicast packet that are affected + * by the reduced number of destinations in the multicast tracket TVLV. In + * particular this updates: + * + * The num_dest field of the multicast tracker TVLV. + * The TVLV length field of the according generic TVLV header. + * The batman-adv multicast packet's total TVLV length field. + * + * Return: The offset in skb's tail direction at which the new batman-adv + * multicast packet header needs to start. + */ +static unsigned int +batadv_mcast_forw_shrink_update_headers(struct sk_buff *skb, + unsigned int num_dests_reduce) +{ + struct batadv_tvlv_mcast_tracker *mcast_tracker; + struct batadv_mcast_packet *mcast_packet; + struct batadv_tvlv_hdr *tvlv_hdr; + unsigned char *skb_net_hdr; + unsigned int offset; + short align_offset; + u16 num_dests; + + skb_net_hdr = skb_network_header(skb); + mcast_tracker = (struct batadv_tvlv_mcast_tracker *)skb_net_hdr; + num_dests = ntohs(mcast_tracker->num_dests); + + align_offset = batadv_mcast_forw_shrink_align_offset(num_dests, + num_dests_reduce); + offset = ETH_ALEN * num_dests_reduce + align_offset; + num_dests -= num_dests_reduce; + + /* update tracker header */ + mcast_tracker->num_dests = htons(num_dests); + + /* update tracker's tvlv header's length field */ + tvlv_hdr = (struct batadv_tvlv_hdr *)(skb_network_header(skb) - + sizeof(*tvlv_hdr)); + tvlv_hdr->len = htons(ntohs(tvlv_hdr->len) - offset); + + /* update multicast packet header's tvlv length field */ + mcast_packet = (struct batadv_mcast_packet *)skb->data; + mcast_packet->tvlv_len = htons(ntohs(mcast_packet->tvlv_len) - offset); + + return offset; +} + +/** + * batadv_mcast_forw_shrink_move_headers() - move multicast headers by offset + * @skb: the batman-adv multicast packet to move headers for + * @offset: a non-negative offset to move headers by, towards the skb tail + * + * Moves the batman-adv multicast packet header, its multicast tracker TVLV and + * any TVLVs in between by the given offset in direction towards the tail. + */ +static void +batadv_mcast_forw_shrink_move_headers(struct sk_buff *skb, unsigned int offset) +{ + struct batadv_tvlv_mcast_tracker *mcast_tracker; + unsigned char *skb_net_hdr; + unsigned int len; + u16 num_dests; + + skb_net_hdr = skb_network_header(skb); + mcast_tracker = (struct batadv_tvlv_mcast_tracker *)skb_net_hdr; + num_dests = ntohs(mcast_tracker->num_dests); + len = skb_network_offset(skb) + sizeof(*mcast_tracker); + len += num_dests * ETH_ALEN; + + batadv_mcast_forw_scrape(skb, len, offset); +} + +/** + * batadv_mcast_forw_shrink_tracker() - remove zero addresses in a tracker tvlv + * @skb: the batman-adv multicast packet to (potentially) shrink + * + * Removes all destinations with a zero MAC addresses (00:00:00:00:00:00) from + * the given batman-adv multicast packet's tracker TVLV and updates headers + * accordingly to maintain a valid batman-adv multicast packet. + */ +static void batadv_mcast_forw_shrink_tracker(struct sk_buff *skb) +{ + unsigned int offset; + u16 dests_reduced; + + dests_reduced = batadv_mcast_forw_shrink_pack_dests(skb); + if (!dests_reduced) + return; + + offset = batadv_mcast_forw_shrink_update_headers(skb, dests_reduced); + batadv_mcast_forw_shrink_move_headers(skb, offset); +} + /** * batadv_mcast_forw_packet() - forward a batman-adv multicast packet * @bat_priv: the bat priv with all the soft interface information @@ -798,6 +992,7 @@ static int batadv_mcast_forw_packet(struct batadv_priv *bat_priv, batadv_mcast_forw_scrub_dests(bat_priv, neigh_node, dest, next_dest, num_dests); + batadv_mcast_forw_shrink_tracker(nexthop_skb); batadv_inc_counter(bat_priv, BATADV_CNT_MCAST_TX); batadv_add_counter(bat_priv, BATADV_CNT_MCAST_TX_BYTES, -- linux integration

1 0

[linux-merge]linux integration; branch, batadv/net-next, updated. v6.5-rc1-10-gae682b2330e6
by postmaster＠open-mesh.org 03 Aug '23

03 Aug '23

The following commit has been merged in the batadv/net-next branch: commit 6cb5e1144fc1c7d587b717c5be95ca076543d7ab Author: Sven Eckelmann <sven(a)narfation.org> Date: Wed Aug 2 10:24:20 2023 +0200 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 <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index ad5714f737be..b6c512ce6704 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -377,7 +377,7 @@ nla_put_failure: * * 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 @@ nla_put_failure: * * 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 @@ nla_put_failure: * * 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 48102cc7490c..876d2806a67d 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_ */ -- linux integration

1 0

[linux-merge]linux integration; branch, batadv/net-next, updated. v6.5-rc1-10-gae682b2330e6
by postmaster＠open-mesh.org 03 Aug '23

03 Aug '23

The following commit has been merged in the batadv/net-next branch: commit ae682b2330e6b29c8f729012eeb4184ffef427a4 Author: Sven Eckelmann <sven(a)narfation.org> Date: Wed Aug 2 10:39:28 2023 +0200 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 <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 828fb393ee94..74b49c35ddc1 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 54e41fc709c3..ac11f1f08db0 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/jiffies.h> #include <linux/kref.h> +#include <linux/limits.h> #include <linux/list.h> #include <linux/minmax.h> #include <linux/netdevice.h> @@ -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 d9632607f92b..2dd36ef03c84 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -9,86 +9,14 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> -#include <linux/kstrtox.h> -#include <linux/limits.h> -#include <linux/math64.h> -#include <linux/netdevice.h> #include <linux/stddef.h> -#include <linux/string.h> +#include <linux/types.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> #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, &lthroughput); - 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 cb2e72d7ab14..5d097d6a1dd9 100644 --- a/net/batman-adv/gateway_common.h +++ b/net/batman-adv/gateway_common.h @@ -9,9 +9,6 @@ #include "main.h" -#include <linux/netdevice.h> -#include <linux/types.h> - /** * 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 b6c512ce6704..d37872b34281 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 4008ae1d6c15..2e7a8d8ccf6d 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -2261,11 +2261,10 @@ 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) -- linux integration

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