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From: Leon Romanovsky <>
To: Christoph Lameter <>
Subject: Re: [PATCH][FIX] ROCE Multicast: Do not send IGMP leaves for sendonly Multicast groups
Date: Mon, 13 Sep 2021 13:38:43 +0300	[thread overview]
Message-ID: <YT8qM0IpIslXL4Ni@unreal> (raw)
In-Reply-To: <>

On Wed, Sep 08, 2021 at 01:43:28PM +0200, Christoph Lameter wrote:
> ROCE uses IGMP for Multicast instead of the native Infiniband system where
> joins are required in order to post messages on the Multicast group.

According to the IBTA v1.5, there is no need to join multicast group to
send messages.

  A QP is not required to be attached to a Multicast Group
  in order to initiate an IBA Unreliable Multicast Work Request.

Did I look in wrong place?


  reply	other threads:[~2021-09-13 10:38 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-08 11:43 Christoph Lameter
2021-09-13 10:38 ` Leon Romanovsky [this message]
2021-09-14 18:38   ` Jason Gunthorpe
2021-09-15 19:44   ` Christoph Lameter
2021-09-14 18:57 ` Jason Gunthorpe

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