Re: [PATCH iproute2-next 2/4] rdma: Add resource FRMR pools show command
From: David Ahern <hidden>
Date: 2026-03-07 01:45:52
Also in:
linux-rdma
On 3/2/26 8:51 AM, Chiara Meiohas wrote:
quoted hunk ↗ jump to hunk
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 <michaelgur@nvidia.com> + */ + +#include "res.h" +#include <inttypes.h> + +#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]; +}; +