netdev - Re: [PATCHv2 net 0/3] tipc: fix the mtu update in link mtu negotiation

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Message-ID: <74fbee87-2d73-1fde-ee3b-97e8c7382d01@redhat.com>
Date: Sun, 7 May 2023 17:46:24 -0400
From: Jon Maloy <jmaloy@...hat.com>
To: Xin Long <lucien.xin@...il.com>, network dev <netdev@...r.kernel.org>,
 tipc-discussion@...ts.sourceforge.net
Cc: davem@...emloft.net, kuba@...nel.org, Eric Dumazet <edumazet@...gle.com>,
 Paolo Abeni <pabeni@...hat.com>, Tung Nguyen <tung.q.nguyen@...tech.com.au>
Subject: Re: [PATCHv2 net 0/3] tipc: fix the mtu update in link mtu
 negotiation



On 2023-05-02 18:13, Xin Long wrote:
> This patchset fixes a crash caused by a too small MTU carried in the
> activate msg. Note that as such malicious packet does not exist in
> the normal env, the fix won't break any application
>
> The 1st patch introduces a function to calculate the minimum MTU for
> the bearer, and the 2nd patch fixes the crash with this helper. While
> at it, the 3rd patch fixes the udp bearer mtu update by netlink with
> this helper.
>
> Xin Long (3):
>    tipc: add tipc_bearer_min_mtu to calculate min mtu
>    tipc: do not update mtu if msg_max is too small in mtu negotiation
>    tipc: check the bearer min mtu properly when setting it by netlink
>
>   net/tipc/bearer.c    | 17 +++++++++++++++--
>   net/tipc/bearer.h    |  3 +++
>   net/tipc/link.c      |  9 ++++++---
>   net/tipc/udp_media.c |  5 +++--
>   4 files changed, 27 insertions(+), 7 deletions(-)
>
Series
Acked-by: Jon Maloy <jmaloy@...hat.com>