mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 07:04:44 +00:00
63ed1aab3d
This change adds a couple of new ioctls for mctp sockets: SIOCMCTPALLOCTAG and SIOCMCTPDROPTAG. These ioctls provide facilities for explicit allocation / release of tags, overriding the automatic allocate-on-send/release-on-reply and timeout behaviours. This allows userspace more control over messages that may not fit a simple request/response model. In order to indicate a pre-allocated tag to the sendmsg() syscall, we introduce a new flag to the struct sockaddr_mctp.smctp_tag value: MCTP_TAG_PREALLOC. Additional changes from Jeremy Kerr <jk@codeconstruct.com.au>. Contains a fix that was: Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM mctp
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#if !defined(_TRACE_MCTP_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_MCTP_H
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#include <linux/tracepoint.h>
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#ifndef __TRACE_MCTP_ENUMS
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#define __TRACE_MCTP_ENUMS
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enum {
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MCTP_TRACE_KEY_TIMEOUT,
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MCTP_TRACE_KEY_REPLIED,
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MCTP_TRACE_KEY_INVALIDATED,
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MCTP_TRACE_KEY_CLOSED,
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MCTP_TRACE_KEY_DROPPED,
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};
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#endif /* __TRACE_MCTP_ENUMS */
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TRACE_DEFINE_ENUM(MCTP_TRACE_KEY_TIMEOUT);
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TRACE_DEFINE_ENUM(MCTP_TRACE_KEY_REPLIED);
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TRACE_DEFINE_ENUM(MCTP_TRACE_KEY_INVALIDATED);
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TRACE_DEFINE_ENUM(MCTP_TRACE_KEY_CLOSED);
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TRACE_DEFINE_ENUM(MCTP_TRACE_KEY_DROPPED);
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TRACE_EVENT(mctp_key_acquire,
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TP_PROTO(const struct mctp_sk_key *key),
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TP_ARGS(key),
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TP_STRUCT__entry(
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__field(__u8, paddr)
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__field(__u8, laddr)
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__field(__u8, tag)
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),
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TP_fast_assign(
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__entry->paddr = key->peer_addr;
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__entry->laddr = key->local_addr;
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__entry->tag = key->tag;
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),
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TP_printk("local %d, peer %d, tag %1x",
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__entry->laddr,
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__entry->paddr,
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__entry->tag
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)
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);
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TRACE_EVENT(mctp_key_release,
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TP_PROTO(const struct mctp_sk_key *key, int reason),
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TP_ARGS(key, reason),
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TP_STRUCT__entry(
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__field(__u8, paddr)
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__field(__u8, laddr)
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__field(__u8, tag)
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__field(int, reason)
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),
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TP_fast_assign(
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__entry->paddr = key->peer_addr;
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__entry->laddr = key->local_addr;
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__entry->tag = key->tag;
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__entry->reason = reason;
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),
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TP_printk("local %d, peer %d, tag %1x %s",
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__entry->laddr,
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__entry->paddr,
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__entry->tag,
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__print_symbolic(__entry->reason,
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{ MCTP_TRACE_KEY_TIMEOUT, "timeout" },
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{ MCTP_TRACE_KEY_REPLIED, "replied" },
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{ MCTP_TRACE_KEY_INVALIDATED, "invalidated" },
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{ MCTP_TRACE_KEY_CLOSED, "closed" },
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{ MCTP_TRACE_KEY_DROPPED, "dropped" })
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)
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);
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#endif
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#include <trace/define_trace.h>
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