ERROR: Macros with complex values should be enclosed in parentheses
#69: FILE: include/trace/events/rxrpc.h:482:
+#define rxrpc_pmtud_reduce_traces \
+	EM(rxrpc_pmtud_reduce_ack,		"Ack  ")	\
+	EM(rxrpc_pmtud_reduce_icmp,		"Icmp ")	\
+	E_(rxrpc_pmtud_reduce_route,		"Route")

CHECK: Lines should not end with a '('
#102: FILE: include/trace/events/rxrpc.h:2056:
+	    TP_STRUCT__entry(

CHECK: Lines should not end with a '('
#111: FILE: include/trace/events/rxrpc.h:2065:
+	    TP_fast_assign(

CHECK: Lines should not end with a '('
#134: FILE: include/trace/events/rxrpc.h:2088:
+	    TP_STRUCT__entry(

CHECK: Lines should not end with a '('
#143: FILE: include/trace/events/rxrpc.h:2097:
+	    TP_fast_assign(

CHECK: Lines should not end with a '('
#166: FILE: include/trace/events/rxrpc.h:2120:
+	    TP_STRUCT__entry(

CHECK: Lines should not end with a '('
#173: FILE: include/trace/events/rxrpc.h:2127:
+	    TP_fast_assign(

WARNING: line length of 82 exceeds 80 columns
#189: FILE: include/trace/events/rxrpc.h:2143:
+		     unsigned int max_data, enum rxrpc_pmtud_reduce_trace reason),

CHECK: Lines should not end with a '('
#193: FILE: include/trace/events/rxrpc.h:2147:
+	    TP_STRUCT__entry(

CHECK: Lines should not end with a '('
#200: FILE: include/trace/events/rxrpc.h:2154:
+	    TP_fast_assign(

WARNING: line length of 83 exceeds 80 columns
#209: FILE: include/trace/events/rxrpc.h:2163:
+		      __print_symbolic(__entry->reason, rxrpc_pmtud_reduce_traces),

WARNING: line length of 91 exceeds 80 columns
#233: FILE: net/rxrpc/ar-internal.h:352:
+	unsigned int		pmtud_good;	/* Largest working MTU probe we've tried */

WARNING: line length of 96 exceeds 80 columns
#234: FILE: net/rxrpc/ar-internal.h:353:
+	unsigned int		pmtud_bad;	/* Smallest non-working MTU probe we've tried */

WARNING: line length of 94 exceeds 80 columns
#236: FILE: net/rxrpc/ar-internal.h:355:
+	bool			pmtud_probing;	/* T if we have an active probe outstanding */

WARNING: line length of 98 exceeds 80 columns
#237: FILE: net/rxrpc/ar-internal.h:356:
+	bool			pmtud_pending;	/* T if a call to this peer should send a probe */

WARNING: line length of 83 exceeds 80 columns
#238: FILE: net/rxrpc/ar-internal.h:357:
+	u8			pmtud_jumbo;	/* Max jumbo packets for the MTU */

WARNING: line length of 87 exceeds 80 columns
#239: FILE: net/rxrpc/ar-internal.h:358:
+	bool			ackr_adv_pmtud;	/* T if the peer advertises path-MTU */

WARNING: line length of 85 exceeds 80 columns
#240: FILE: net/rxrpc/ar-internal.h:359:
+	unsigned int		ackr_max_data;	/* Maximum data advertised by peer */

WARNING: line length of 84 exceeds 80 columns
#241: FILE: net/rxrpc/ar-internal.h:360:
+	seqcount_t		mtu_lock;	/* Lockless MTU access management */

WARNING: line length of 99 exceeds 80 columns
#242: FILE: net/rxrpc/ar-internal.h:361:
+	unsigned int		if_mtu;		/* Local interface MTU (- hdrsize) for this peer */

WARNING: line length of 96 exceeds 80 columns
#243: FILE: net/rxrpc/ar-internal.h:362:
+	unsigned int		max_data;	/* Maximum packet data capacity for this peer */

WARNING: line length of 84 exceeds 80 columns
#244: FILE: net/rxrpc/ar-internal.h:363:
+	unsigned short		hdrsize;	/* header size (IP + UDP + RxRPC) */

WARNING: line length of 94 exceeds 80 columns
#245: FILE: net/rxrpc/ar-internal.h:364:
+	unsigned short		tx_seg_max;	/* Maximum number of transmissable segments */

WARNING: line length of 92 exceeds 80 columns
#271: FILE: net/rxrpc/ar-internal.h:1184:
+void rxrpc_input_probe_for_pmtud(struct rxrpc_connection *conn, rxrpc_serial_t acked_serial,

WARNING: line length of 92 exceeds 80 columns
#493: FILE: net/rxrpc/output.c:217:
+	rxrpc_local_dont_fragment(conn->local, why == rxrpc_propose_ack_ping_for_mtu_probe);

WARNING: line length of 94 exceeds 80 columns
#531: FILE: net/rxrpc/output.c:278:
+		size_t probe_mtu = call->peer->pmtud_trial + sizeof(struct rxrpc_wire_header);

WARNING: line length of 85 exceeds 80 columns
#615: FILE: net/rxrpc/peer_event.c:132:
+		trace_rxrpc_pmtud_reduce(peer, 0, max_data, rxrpc_pmtud_reduce_icmp);

WARNING: line length of 92 exceeds 80 columns
#630: FILE: net/rxrpc/peer_event.c:362:
+void rxrpc_input_probe_for_pmtud(struct rxrpc_connection *conn, rxrpc_serial_t acked_serial,

WARNING: line length of 85 exceeds 80 columns
#736: FILE: net/rxrpc/peer_object.c:211:
+	peer->max_data		= umin(RXRPC_JUMBO(1), peer->if_mtu - peer->hdrsize);

WARNING: line length of 83 exceeds 80 columns
#874: FILE: net/rxrpc/txbuf.c:183:
+		    !is_zero_pfn(page_to_pfn(virt_to_page(txb->kvec[i].iov_base))))

total: 1 errors, 21 warnings, 8 checks, 724 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 0fea31d70992 ("rxrpc: Implement path-MTU probing using padded PING ACKs (RFC8899)") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.