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| author | Jakub Kicinski <kuba@kernel.org> | 2022-09-19 18:13:43 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-09-19 18:13:44 -0700 |
| commit | 0ee513c773695e6fa6b615b24539f2a59c7c1f06 (patch) | |
| tree | 64c6eb3d3b13e4460d0ca386e0e4ec73268508f9 /net | |
| parent | 0a242eb2913a4aa3d6fbdb86559f27628e9466f3 (diff) | |
| parent | b1cb8a71f1eaec4eb77051590f7f561f25b15e32 (diff) | |
Merge tag 'batadv-net-pullrequest-20220916' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
Here is a batman-adv bugfix:
- Fix hang up with small MTU hard-interface, by Shigeru Yoshida
* tag 'batadv-net-pullrequest-20220916' of git://git.open-mesh.org/linux-merge:
batman-adv: Fix hang up with small MTU hard-interface
====================
Link: https://lore.kernel.org/r/20220916160931.1412407-1-sw@simonwunderlich.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/batman-adv/hard-interface.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index b8f8da7ee3de..41c1ad33d009 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -10,6 +10,7 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> #include <linux/container_of.h> +#include <linux/errno.h> #include <linux/gfp.h> #include <linux/if.h> #include <linux/if_arp.h> @@ -700,6 +701,9 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, int max_header_len = batadv_max_header_len(); int ret; + if (hard_iface->net_dev->mtu < ETH_MIN_MTU + max_header_len) + return -EINVAL; + if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) goto out; |