Re: [PATCH net v3] tipc: fix bc_ackers underflow on duplicate GRP_ACK_MSG

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Thu, 2 Apr 2026 09:48:57 +0000 you wrote:
> The GRP_ACK_MSG handler in tipc_group_proto_rcv() currently decrements
> bc_ackers on every inbound group ACK, even when the same member has
> already acknowledged the current broadcast round.
> 
> Because bc_ackers is a u16, a duplicate ACK received after the last
> legitimate ACK wraps the counter to 65535. Once wrapped,
> tipc_group_bc_cong() keeps reporting congestion and later group
> broadcasts on the affected socket stay blocked until the group is
> recreated.
> 
> [...]

Here is the summary with links:
  - [net,v3] tipc: fix bc_ackers underflow on duplicate GRP_ACK_MSG
    https://git.kernel.org/netdev/net/c/48a5fe38772b

You are awesome, thank you!
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