Convert confirm_rx to little endian when enqueueing and convert it back on receive. This fixes control flow on big endian hosts, little endian is unaffected. On transmit, store confirm_rx as __le32 using cpu_to_le32(). On receive, apply le32_to_cpu() before using the value. !! ensures the value is 0 or 1 in native endianness, so the conversion isn’t strictly required here, but it is kept for consistency and clarity. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Alexander Wilhelm --- Changes in v3: - Rebase on latest net-next tree - Remove "Fixes" tag - Link to v2: https://lore.kernel.org/r/20260324-b4-qrtr-fix-confirm_rx-on-big-endian-v2-1-674fb3f4865b@westermo.com Changes in v2: - Rebase on latest net tree - Improve commit message - Link to v1: https://lore.kernel.org/r/20260320-qrtr-fix-confirm_rx-on-big-endian-v1-1-e1a337dc1a38@westermo.com --- net/qrtr/af_qrtr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c index 55fd2dd37588..bea1f1720e7f 100644 --- a/net/qrtr/af_qrtr.c +++ b/net/qrtr/af_qrtr.c @@ -365,7 +365,7 @@ static int qrtr_node_enqueue(struct qrtr_node *node, struct sk_buff *skb, } hdr->size = cpu_to_le32(len); - hdr->confirm_rx = !!confirm_rx; + hdr->confirm_rx = cpu_to_le32(!!confirm_rx); rc = skb_put_padto(skb, ALIGN(len, 4) + sizeof(*hdr)); @@ -466,7 +466,7 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len) cb->type = le32_to_cpu(v1->type); cb->src_node = le32_to_cpu(v1->src_node_id); cb->src_port = le32_to_cpu(v1->src_port_id); - cb->confirm_rx = !!v1->confirm_rx; + cb->confirm_rx = !!le32_to_cpu(v1->confirm_rx); cb->dst_node = le32_to_cpu(v1->dst_node_id); cb->dst_port = le32_to_cpu(v1->dst_port_id); --- base-commit: d1e59a46973719e458bec78d00dd767d7a7ba71f change-id: 20260324-b4-qrtr-fix-confirm_rx-on-big-endian-ee2b9637d265 Best regards, -- Alexander Wilhelm