add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/infiniband/core/user_mad.c
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@@ -131,6 +131,11 @@
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 	struct ib_user_mad mad;
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 };
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+struct ib_rmpp_mad_hdr {
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+	struct ib_mad_hdr	mad_hdr;
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+	struct ib_rmpp_hdr      rmpp_hdr;
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+} __packed;
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+
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 #define CREATE_TRACE_POINTS
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 #include <trace/events/ib_umad.h>
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@@ -494,11 +499,11 @@
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 			     size_t count, loff_t *pos)
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 {
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 	struct ib_umad_file *file = filp->private_data;
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+	struct ib_rmpp_mad_hdr *rmpp_mad_hdr;
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 	struct ib_umad_packet *packet;
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 	struct ib_mad_agent *agent;
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 	struct rdma_ah_attr ah_attr;
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 	struct ib_ah *ah;
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-	struct ib_rmpp_mad *rmpp_mad;
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 	__be64 *tid;
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 	int ret, data_len, hdr_len, copy_offset, rmpp_active;
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 	u8 base_version;
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@@ -506,7 +511,7 @@
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 	if (count < hdr_size(file) + IB_MGMT_RMPP_HDR)
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 		return -EINVAL;
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-	packet = kzalloc(sizeof *packet + IB_MGMT_RMPP_HDR, GFP_KERNEL);
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+	packet = kzalloc(sizeof(*packet) + IB_MGMT_RMPP_HDR, GFP_KERNEL);
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 	if (!packet)
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 		return -ENOMEM;
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@@ -560,13 +565,13 @@
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 		goto err_up;
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 	}
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-	rmpp_mad = (struct ib_rmpp_mad *) packet->mad.data;
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-	hdr_len = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class);
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+	rmpp_mad_hdr = (struct ib_rmpp_mad_hdr *)packet->mad.data;
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+	hdr_len = ib_get_mad_data_offset(rmpp_mad_hdr->mad_hdr.mgmt_class);
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-	if (ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class)
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+	if (ib_is_mad_class_rmpp(rmpp_mad_hdr->mad_hdr.mgmt_class)
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 	    && ib_mad_kernel_rmpp_agent(agent)) {
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 		copy_offset = IB_MGMT_RMPP_HDR;
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-		rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
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+		rmpp_active = ib_get_rmpp_flags(&rmpp_mad_hdr->rmpp_hdr) &
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 						IB_MGMT_RMPP_FLAG_ACTIVE;
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 	} else {
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 		copy_offset = IB_MGMT_MAD_HDR;
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@@ -615,12 +620,12 @@
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 		tid = &((struct ib_mad_hdr *) packet->msg->mad)->tid;
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 		*tid = cpu_to_be64(((u64) agent->hi_tid) << 32 |
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 				   (be64_to_cpup(tid) & 0xffffffff));
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-		rmpp_mad->mad_hdr.tid = *tid;
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+		rmpp_mad_hdr->mad_hdr.tid = *tid;
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 	}
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 	if (!ib_mad_kernel_rmpp_agent(agent)
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-	   && ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class)
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-	   && (ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE)) {
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+	    && ib_is_mad_class_rmpp(rmpp_mad_hdr->mad_hdr.mgmt_class)
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+	    && (ib_get_rmpp_flags(&rmpp_mad_hdr->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE)) {
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 		spin_lock_irq(&file->send_lock);
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 		list_add_tail(&packet->list, &file->send_list);
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 		spin_unlock_irq(&file->send_lock);