Hi Jakub, hi David,
here is a little cleanup pull request of batman-adv to go into net-next.
Please pull or let me know of any problem!
Thank you, Simon
The following changes since commit 66f4beaa6c1d28161f534471484b2daa2de1dce0:
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 (2021-11-12 12:35:46 -0800)
are available in the Git repository at:
git://git.open-mesh.org/linux-merge.git tags/batadv-next-pullrequest-20220103
for you to fetch changes up to cde3fac565a7df8805a4e0e28d84a0f90177099a:
batman-adv: remove unneeded variable in batadv_nc_init (2021-12-10 08:52:52 +0100)
---------------------------------------------------------------- This cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
- allow netlink usage in unprivileged containers, by Linus Lüssing
- remove unneeded variable, by Minghao Chi
---------------------------------------------------------------- Linus Lüssing (1): batman-adv: allow netlink usage in unprivileged containers
Minghao Chi (1): batman-adv: remove unneeded variable in batadv_nc_init
Simon Wunderlich (1): batman-adv: Start new development cycle
net/batman-adv/main.h | 2 +- net/batman-adv/netlink.c | 30 +++++++++++++++--------------- net/batman-adv/network-coding.c | 8 ++------ 3 files changed, 18 insertions(+), 22 deletions(-)
This version will contain all the (major or even only minor) changes for Linux 5.17.
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 sw@simonwunderlich.de --- 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 058b8f2eef65..494d1ebecac2 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 "2021.3" +#define BATADV_SOURCE_VERSION "2022.0" #endif
/* B.A.T.M.A.N. parameters */
From: Linus Lüssing linus.luessing@c0d3.blue
Currently, creating a batman-adv interface in an unprivileged LXD container and attaching secondary interfaces to it with "ip" or "batctl" works fine. However all batctl debug and configuration commands fail:
root@container:~# batctl originators Error received: Operation not permitted root@container:~# batctl orig_interval 1000 root@container:~# batctl orig_interval 2000 root@container:~# batctl orig_interval 1000
To fix this change the generic netlink permissions from GENL_ADMIN_PERM to GENL_UNS_ADMIN_PERM. This way a batman-adv interface is fully maintainable as root from within a user namespace, from an unprivileged container.
All except one batman-adv netlink setting are per interface and do not leak information or change settings from the host system and are therefore save to retrieve or modify as root from within an unprivileged container.
"batctl routing_algo" / BATADV_CMD_GET_ROUTING_ALGOS is the only exception: It provides the batman-adv kernel module wide default routing algorithm. However it is read-only from netlink and an unprivileged container is still not allowed to modify /sys/module/batman_adv/parameters/routing_algo. Instead it is advised to use the newly introduced "batctl if create routing_algo RA_NAME" / IFLA_BATADV_ALGO_NAME to set the routing algorithm on interface creation, which already works fine in an unprivileged container.
Cc: Tycho Andersen tycho@tycho.pizza Signed-off-by: Linus Lüssing linus.luessing@c0d3.blue Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Simon Wunderlich sw@simonwunderlich.de --- net/batman-adv/netlink.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 29276284d281..00875e1d8c44 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -1368,21 +1368,21 @@ static const struct genl_small_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_TP_METER, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_tp_meter_start, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_TP_METER_CANCEL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_tp_meter_cancel, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_GET_ROUTING_ALGOS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_algo_dump, }, { @@ -1397,68 +1397,68 @@ static const struct genl_small_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_tt_local_dump, }, { .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_tt_global_dump, }, { .cmd = BATADV_CMD_GET_ORIGINATORS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_orig_dump, }, { .cmd = BATADV_CMD_GET_NEIGHBORS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_hardif_neigh_dump, }, { .cmd = BATADV_CMD_GET_GATEWAYS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_gw_dump, }, { .cmd = BATADV_CMD_GET_BLA_CLAIM, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_bla_claim_dump, }, { .cmd = BATADV_CMD_GET_BLA_BACKBONE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_bla_backbone_dump, }, { .cmd = BATADV_CMD_GET_DAT_CACHE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_dat_cache_dump, }, { .cmd = BATADV_CMD_GET_MCAST_FLAGS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_mcast_flags_dump, }, { .cmd = BATADV_CMD_SET_MESH, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_set_mesh, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_SET_HARDIF, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_set_hardif, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_HARDIF, @@ -1474,7 +1474,7 @@ static const struct genl_small_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_SET_VLAN, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_set_vlan, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_VLAN,
From: Minghao Chi chi.minghao@zte.com.cn
Return status directly from function called.
Reported-by: Zeal Robot zealci@zte.com.cn Signed-off-by: Minghao Chi chi.minghao@zte.com.cn Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Simon Wunderlich sw@simonwunderlich.de --- net/batman-adv/network-coding.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index 0a7f1d36a6a8..974d726fabb9 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -58,13 +58,9 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb, */ int __init batadv_nc_init(void) { - int ret; - /* Register our packet type */ - ret = batadv_recv_handler_register(BATADV_CODED, - batadv_nc_recv_coded_packet); - - return ret; + return batadv_recv_handler_register(BATADV_CODED, + batadv_nc_recv_coded_packet); }
/**
Hello:
This series was applied to netdev/net-next.git (master) by Simon Wunderlich sw@simonwunderlich.de:
On Mon, 3 Jan 2022 18:17:20 +0100 you wrote:
This version will contain all the (major or even only minor) changes for Linux 5.17.
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).
[...]
Here is the summary with links: - [1/3] batman-adv: Start new development cycle https://git.kernel.org/netdev/net-next/c/c2262123cc49 - [2/3] batman-adv: allow netlink usage in unprivileged containers https://git.kernel.org/netdev/net-next/c/9057d6c23e73 - [3/3] batman-adv: remove unneeded variable in batadv_nc_init https://git.kernel.org/netdev/net-next/c/cde3fac565a7
You are awesome, thank you!
b.a.t.m.a.n@lists.open-mesh.org
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Simon Wunderlich