mptcp: add tracepoint in mptcp_sendmsg_frag

The tracepoint in get_mapping_status() only dumped the incoming mpext
fields. This patch added a new tracepoint in mptcp_sendmsg_frag() to dump
the outgoing mpext too.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/trace/events/mptcp.h b/include/trace/events/mptcp.h
index 6bf4317..f8e28e6 100644 (file)
--- a/include/trace/events/mptcp.h
+++ b/include/trace/events/mptcp.h
@@ -115,6 +115,10 @@ DECLARE_EVENT_CLASS(mptcp_dump_mpext,
                  __entry->csum_reqd)
 );
 
+DEFINE_EVENT(mptcp_dump_mpext, mptcp_sendmsg_frag,
+       TP_PROTO(struct mptcp_ext *mpext),
+       TP_ARGS(mpext));
+
 DEFINE_EVENT(mptcp_dump_mpext, get_mapping_status,
        TP_PROTO(struct mptcp_ext *mpext),
        TP_ARGS(mpext));

diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1c72f25..36a7d33 100644 (file)
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1356,6 +1356,7 @@ alloc_skb:
 out:
        if (READ_ONCE(msk->csum_enabled))
                mptcp_update_data_checksum(skb, copy);
+       trace_mptcp_sendmsg_frag(mpext);
        mptcp_subflow_ctx(ssk)->rel_write_seq += copy;
        return copy;
 }