WARNING: please write a help paragraph that fully describes the config symbol with at least 4 lines
#57: FILE: net/rxrpc/Kconfig:100:
+config AF_RXRPC_KUNIT_TEST
+	tristate "RxRPC KUnit test" if !KUNIT_ALL_TESTS
+	depends on KUNIT && RXKAD
+	default KUNIT_ALL_TESTS
+	help
+	  Enable the RxRPC KUnit test suite.
+

WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
#121: FILE: net/rxrpc/fcrypt.c:1:
+/* FCrypt encryption algorithm

CHECK: Macro argument 'x' may be better as '(x)' to avoid precedence issues
#176: FILE: net/rxrpc/fcrypt.c:56:
+#define Z(x) cpu_to_be32(x << 3)

CHECK: Macro argument 'x' may be better as '(x)' to avoid precedence issues
#213: FILE: net/rxrpc/fcrypt.c:93:
+#define Z(x) cpu_to_be32(((x & 0x1f) << 27) | (x >> 5))

CHECK: Macro argument 'x' may be better as '(x)' to avoid precedence issues
#250: FILE: net/rxrpc/fcrypt.c:130:
+#define Z(x) cpu_to_be32(x << 11)

CHECK: Macro argument 'x' may be better as '(x)' to avoid precedence issues
#287: FILE: net/rxrpc/fcrypt.c:167:
+#define Z(x) cpu_to_be32(x << 19)

CHECK: Macro argument 'R' may be better as '(R)' to avoid precedence issues
#330: FILE: net/rxrpc/fcrypt.c:210:
+#define F_ENCRYPT(R, L, sched)                                       \
+	do {                                                         \
+		union lc4 {                                          \
+			__be32 l;                                    \
+			u8 c[4];                                     \
+		} u;                                                 \
+		u.l = sched ^ R;                                     \
+		L ^= sbox0[u.c[0]] ^ sbox1[u.c[1]] ^ sbox2[u.c[2]] ^ \
+		     sbox3[u.c[3]];                                  \
+	} while (0)

CHECK: Macro argument 'L' may be better as '(L)' to avoid precedence issues
#330: FILE: net/rxrpc/fcrypt.c:210:
+#define F_ENCRYPT(R, L, sched)                                       \
+	do {                                                         \
+		union lc4 {                                          \
+			__be32 l;                                    \
+			u8 c[4];                                     \
+		} u;                                                 \
+		u.l = sched ^ R;                                     \
+		L ^= sbox0[u.c[0]] ^ sbox1[u.c[1]] ^ sbox2[u.c[2]] ^ \
+		     sbox3[u.c[3]];                                  \
+	} while (0)

CHECK: Macro argument 'sched' may be better as '(sched)' to avoid precedence issues
#330: FILE: net/rxrpc/fcrypt.c:210:
+#define F_ENCRYPT(R, L, sched)                                       \
+	do {                                                         \
+		union lc4 {                                          \
+			__be32 l;                                    \
+			u8 c[4];                                     \
+		} u;                                                 \
+		u.l = sched ^ R;                                     \
+		L ^= sbox0[u.c[0]] ^ sbox1[u.c[1]] ^ sbox2[u.c[2]] ^ \
+		     sbox3[u.c[3]];                                  \
+	} while (0)

CHECK: Please use a blank line after function/struct/union/enum declarations
#591: FILE: net/rxrpc/tests/rxrpc_kunit.c:105:
+};
+kunit_test_suite(rxrpc_test_suite);

total: 0 errors, 2 warnings, 8 checks, 518 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 4b005ed3059b ("net/rxrpc: Add local FCrypt-PCBC implementation") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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.
total: 0 errors, 2 warnings, 8 checks, 518 lines checked