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Message-ID: <20251007114624.9594-1-larysa.zaremba@intel.com>
Date: Tue, 7 Oct 2025 13:46:22 +0200
From: Larysa Zaremba <larysa.zaremba@...el.com>
To: intel-wired-lan@...ts.osuosl.org,
Tony Nguyen <anthony.l.nguyen@...el.com>
Cc: Larysa Zaremba <larysa.zaremba@...el.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Joshua Hay <joshua.a.hay@...el.com>,
Chittim Madhu <madhu.chittim@...el.com>,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Emil Tantilov <emil.s.tantilov@...el.com>,
Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>,
Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Subject: [PATCH iwl-net] idpf: fix LAN memory regions command on some NVMs
IPU SDK versions 1.9 through 2.0.5 require send buffer to contain a single
empty memory region. Set number of regions to 1 and use appropriate send
buffer size to satisfy this requirement.
Suggested-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@...el.com>
---
drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
index fa3ce1e4f6ac..af8b3ebee4d4 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
@@ -1016,6 +1016,9 @@ static int idpf_send_get_lan_memory_regions(struct idpf_adapter *adapter)
struct idpf_vc_xn_params xn_params = {
.vc_op = VIRTCHNL2_OP_GET_LAN_MEMORY_REGIONS,
.recv_buf.iov_len = IDPF_CTLQ_MAX_BUF_LEN,
+ .send_buf.iov_len =
+ sizeof(struct virtchnl2_get_lan_memory_regions) +
+ sizeof(struct virtchnl2_mem_region),
.timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC,
};
int num_regions, size;
@@ -1028,6 +1031,8 @@ static int idpf_send_get_lan_memory_regions(struct idpf_adapter *adapter)
return -ENOMEM;
xn_params.recv_buf.iov_base = rcvd_regions;
+ rcvd_regions->num_memory_regions = cpu_to_le16(1);
+ xn_params.send_buf.iov_base = rcvd_regions;
reply_sz = idpf_vc_xn_exec(adapter, &xn_params);
if (reply_sz < 0)
return reply_sz;
--
2.47.0
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