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mptcp: add tracepoint in get_mapping_status

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This patch added a tracepoint in the mapping status function
get_mapping_status() to dump every mpext field.

Suggested-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang 2021-04-16 15:38:05 -07:00 • committed by David S. Miller
parent e10a989209
commit 0918e34b85
2 changed files with 55 additions and 3 deletions
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6
net/mptcp/subflow.c
View file

@ -25,6 +25,8 @@
#include "protocol.h"
#include "mib.h"
#include <trace/events/mptcp.h>
static void mptcp_subflow_ops_undo_override(struct sock *ssk);
static void SUBFLOW_REQ_INC_STATS(struct request_sock *req,
@ -862,9 +864,7 @@ static enum mapping_status get_mapping_status(struct sock *ssk,
goto validate_seq;
}
pr_debug("seq=%llu is64=%d ssn=%u data_len=%u data_fin=%d",
mpext->data_seq, mpext->dsn64, mpext->subflow_seq,
mpext->data_len, mpext->data_fin);
trace_get_mapping_status(mpext);
data_len = mpext->data_len;
if (data_len == 0) {