netdev - Re: [PATCH for-rc] RDMA/cxgb4: fix accept failure due to increased cpl_t5_pass_accept

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Date:   Tue, 9 Aug 2022 15:59:20 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Cc:     linux-rdma@...r.kernel.org, netdev@...r.kernel.org, jgg@...dia.com,
        leonro@...dia.com, davem@...emloft.net, kuba@...nel.org,
        edumazet@...gle.com, pabeni@...hat.com, bharat@...lsio.com
Subject: Re: [PATCH for-rc] RDMA/cxgb4: fix accept failure due to increased
 cpl_t5_pass_accept_rpl size

On Wed, Aug 10, 2022 at 12:11:18AM +0530, Rahul Lakkireddy wrote:
> From: Potnuri Bharat Teja <bharat@...lsio.com>
> 
> Commit 'c2ed5611afd7' has increased the cpl_t5_pass_accept_rpl{} structure
> size by 8B to avoid roundup. cpl_t5_pass_accept_rpl{} is a HW specific
> structure and increasing its size will lead to unwanted adapter errors.
> Current commit reverts the cpl_t5_pass_accept_rpl{} back to its original
> and allocates zeroed skb buffer there by avoiding the memset for iss field.
> Reorder code to minimize chip type checks.
> 
> Fixes: c2ed5611afd7 ("iw_cxgb4: Use memset_startat() for cpl_t5_pass_accept_rpl")
> Signed-off-by: Potnuri Bharat Teja <bharat@...lsio.com>
> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>

Thanks for the better solution!

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook