From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B6569375256 for ; Sat, 28 Feb 2026 18:16:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302583; cv=none; b=nxte768QIVYBBa6gNmFLvyHNrdfjNcYpxYOIo0J+B7BF9cEKDlz7szASEQoi8Cd4uevtNqLFqKyXNPpkfVrOdtXyAjyppt/z0m5kv8QRUHhV0QxAq67wvhWt463bHC3rrPV+KygihQw7fUFNLRm0fXmabutggUBYsSXJJkSDMvE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302583; c=relaxed/simple; bh=kFHf55YhVI9c5MUVaZlFR7Em1pAZZ+JX3c9z8lIGZ5c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ode+/5od6p59WvSFkdEghT2gG4eMbHqFm7ad1ZVOYyCpmRDorOFgEea7K2dXd5Mt8CwBZYDqGku6fygs2bU+WhIbWYXtwrd8+oOfUQWoqVqvEYUEvSywdCduYDifluPCrywaznD4bIaSYkg5oeLQVo4xVxDuNHtnpZydSTT8BrY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rY+m0E34; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rY+m0E34" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 102D6C19423; Sat, 28 Feb 2026 18:16:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302583; bh=kFHf55YhVI9c5MUVaZlFR7Em1pAZZ+JX3c9z8lIGZ5c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rY+m0E34kLb74kG58Oo2q3Hhxk1H3pg4i7E/Ei37NCG8GwJENQzYQjuDUxwI5u8HJ YsmAoFgkbnxes91kz0DQh0974SJo2d4hQjJLzbBwVroeIuuqI/Jz9HSiTO3AOL/zAD P63iAFbbZVysANQS4GRYUz/vLyDzSzBsf47PoPiUu05kDx/ESJ5VuO/K9gV/EYnx58 N6CUFKO8n5GNKrveJIMxH/E2zH84UdgtTrRhaXSAmTy2aqNre+BcQGhtgheqG5qs/Q 3LEMD60VB6snQa0v1uO9+HZtRMY0KcUZTvwwIITg3j4TWszxCFA7jfik681FAxrsmb F9Zn7hfa1NaKQ== From: Sasha Levin To: patches@lists.linux.dev Cc: Etienne AUJAMES , Parav Pandit , Leon Romanovsky , Sasha Levin Subject: [PATCH 5.15 092/164] IB/cache: update gid cache on client reregister event Date: Sat, 28 Feb 2026 13:13:51 -0500 Message-ID: <20260228181505.1600663-92-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228181505.1600663-1-sashal@kernel.org> References: <20260228181505.1600663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Etienne AUJAMES [ Upstream commit ddd6c8c873e912cb1ead79def54de5e24ff71c80 ] Some HCAs (e.g: ConnectX4) do not trigger a IB_EVENT_GID_CHANGE on subnet prefix update from SM (PortInfo). Since the commit d58c23c92548 ("IB/core: Only update PKEY and GID caches on respective events"), the GID cache is updated exclusively on IB_EVENT_GID_CHANGE. If this event is not emitted, the subnet prefix in the IPoIB interface’s hardware address remains set to its default value (0xfe80000000000000). Then rdma_bind_addr() failed because it relies on hardware address to find the port GID (subnet_prefix + port GUID). This patch fixes this issue by updating the GID cache on IB_EVENT_CLIENT_REREGISTER event (emitted on PortInfo::ClientReregister=1). Fixes: d58c23c92548 ("IB/core: Only update PKEY and GID caches on respective events") Signed-off-by: Etienne AUJAMES Link: https://patch.msgid.link/aVUfsO58QIDn5bGX@eaujamesFR0130 Reviewed-by: Parav Pandit Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/core/cache.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 91ee3e823a9fe..d43a005a18d37 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1549,7 +1549,8 @@ static void ib_cache_event_task(struct work_struct *_work) * the cache. */ ret = ib_cache_update(work->event.device, work->event.element.port_num, - work->event.event == IB_EVENT_GID_CHANGE, + work->event.event == IB_EVENT_GID_CHANGE || + work->event.event == IB_EVENT_CLIENT_REREGISTER, work->event.event == IB_EVENT_PKEY_CHANGE, work->enforce_security); -- 2.51.0