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([2601:282:1e02:1040:481e:870c:b200:7ebe]) by smtp.googlemail.com with ESMTPSA id 586e51a60fabf-416e68368a8sm2857838fac.14.2026.03.06.17.45.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 Mar 2026 17:45:50 -0800 (PST) Message-ID: Date: Fri, 6 Mar 2026 18:45:49 -0700 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH iproute2-next 2/4] rdma: Add resource FRMR pools show command Content-Language: en-US To: Chiara Meiohas , leon@kernel.org, stephen@networkplumber.org Cc: michaelgur@nvidia.com, jgg@nvidia.com, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Patrisious Haddad References: <20260302155200.2611098-1-cmeiohas@nvidia.com> <20260302155200.2611098-3-cmeiohas@nvidia.com> From: David Ahern In-Reply-To: <20260302155200.2611098-3-cmeiohas@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/2/26 8:51 AM, Chiara Meiohas wrote: > diff --git a/rdma/res-frmr-pools.c b/rdma/res-frmr-pools.c > new file mode 100644 > index 00000000..97d59705 > --- /dev/null > +++ b/rdma/res-frmr-pools.c > @@ -0,0 +1,190 @@ > +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB > +/* > + * res-frmr-pools.c RDMA tool > + * Authors: Michael Guralnik > + */ > + > +#include "res.h" > +#include > + > +#define FRMR_POOL_KEY_SIZE 21 > +#define FRMR_POOL_KEY_HEX_SIZE (FRMR_POOL_KEY_SIZE * 2) > +union frmr_pool_key { > + struct { > + uint8_t ats; > + uint32_t access_flags; > + uint64_t vendor_key; > + uint64_t num_dma_blocks; > + } __attribute__((packed)) fields; why is packed needed on this struct? why can't the fields be re-arranged to not require it and just let the extra 3B be at the end unused? > + uint8_t raw[FRMR_POOL_KEY_SIZE]; > +}; > +