5:26 a.m.
Hi Xin,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on net/master]
url:
https://github.com/0day-ci/linux/commits/Xin-Long/sctp-do-not-update-tran...
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git
e9a72f874d5b95cef0765bafc56005a50f72c5fe
config: x86_64-randconfig-r012-20210720 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
c781eb153bfbd1b52b03efe34f56bbeccbb8aba6)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
#
https://github.com/0day-ci/linux/commit/e6927d4d69af5f40d7884a7ccc70737bf...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Xin-Long/sctp-do-not-update-transport-pathmtu-if-SPP_PMTUD_ENABLE-is-not-set/20210722-001121
git checkout e6927d4d69af5f40d7884a7ccc70737bf3da2771
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64
SHELL=/bin/bash net/sctp/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
net/sctp/output.c:112:2: error: expected identifier or '('
if (asoc->pmtu_pending) {
^
net/sctp/output.c:121:2: error: expected identifier or '('
if (ecn_capable) {
^
net/sctp/output.c:128:2: error: expected identifier or '('
if (!tp->dst)
^
> net/sctp/output.c:132:2: warning: declaration specifier missing,
defaulting to 'int'
rcu_read_lock();
^
int
net/sctp/output.c:132:15: error: this function declaration is not a prototype
[-Werror,-Wstrict-prototypes]
rcu_read_lock();
^
void
net/sctp/output.c:132:2: error: conflicting types for 'rcu_read_lock'
rcu_read_lock();
^
include/linux/rcupdate.h:683:29: note: previous definition is here
static __always_inline void rcu_read_lock(void)
^
net/sctp/output.c:133:2: error: expected identifier or '('
if (__sk_dst_get(sk) != tp->dst) {
^
net/sctp/output.c:137:2: error: unknown type name 'packet'
packet->max_size = sk_can_gso(sk) ? tp->dst->dev->gso_max_size
^
net/sctp/output.c:137:8: error: expected identifier or '('
packet->max_size = sk_can_gso(sk) ? tp->dst->dev->gso_max_size
^
net/sctp/output.c:139:2: warning: declaration specifier missing, defaulting to
'int'
rcu_read_unlock();
^
int
net/sctp/output.c:139:17: error: this function declaration is not a prototype
[-Werror,-Wstrict-prototypes]
rcu_read_unlock();
^
void
net/sctp/output.c:139:2: error: conflicting types for 'rcu_read_unlock'
rcu_read_unlock();
^
include/linux/rcupdate.h:714:20: note: previous definition is here
static inline void rcu_read_unlock(void)
^
net/sctp/output.c:140:1: error: extraneous closing brace ('}')
}
^
2 warnings and 11 errors generated.
vim +/int +132 net/sctp/output.c
be2971438dec2e Wei Yongjun 2009-09-04 69
^1da177e4c3f41 Linus Torvalds 2005-04-16 70 /* Config a packet.
^1da177e4c3f41 Linus Torvalds 2005-04-16 71 * This appears to be a followup
set of initializations.
^1da177e4c3f41 Linus Torvalds 2005-04-16 72 */
66b91d2cd0344c Marcelo Ricardo Leitner 2016-12-28 73 void sctp_packet_config(struct
sctp_packet *packet, __u32 vtag,
66b91d2cd0344c Marcelo Ricardo Leitner 2016-12-28 74 int ecn_capable)
^1da177e4c3f41 Linus Torvalds 2005-04-16 75 {
90017accff61ae Marcelo Ricardo Leitner 2016-06-02 76 struct sctp_transport *tp =
packet->transport;
90017accff61ae Marcelo Ricardo Leitner 2016-06-02 77 struct sctp_association *asoc =
tp->asoc;
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 78 struct sctp_sock *sp = NULL;
df2729c3238ed8 Xin Long 2017-04-01 79 struct sock *sk;
^1da177e4c3f41 Linus Torvalds 2005-04-16 80
bb33381d0c97cd Daniel Borkmann 2013-06-28 81 pr_debug("%s: packet:%p
vtag:0x%x\n", __func__, packet, vtag);
^1da177e4c3f41 Linus Torvalds 2005-04-16 82 packet->vtag = vtag;
^1da177e4c3f41 Linus Torvalds 2005-04-16 83
df2729c3238ed8 Xin Long 2017-04-01 84 /* do the following jobs only
once for a flush schedule */
df2729c3238ed8 Xin Long 2017-04-01 85 if (!sctp_packet_empty(packet))
df2729c3238ed8 Xin Long 2017-04-01 86 return;
90017accff61ae Marcelo Ricardo Leitner 2016-06-02 87
b7e10c25b839c0 Richard Haines 2018-02-24 88 /* set packet max_size with
pathmtu, then calculate overhead */
90017accff61ae Marcelo Ricardo Leitner 2016-06-02 89 packet->max_size =
tp->pathmtu;
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 90
b7e10c25b839c0 Richard Haines 2018-02-24 91 if (asoc) {
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 92 sk = asoc->base.sk;
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 93 sp = sctp_sk(sk);
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 94 }
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 95 packet->overhead =
sctp_mtu_payload(sp, 0, 0);
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 96 packet->size =
packet->overhead;
b7e10c25b839c0 Richard Haines 2018-02-24 97
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 98 if (!asoc)
df2729c3238ed8 Xin Long 2017-04-01 99 return;
90017accff61ae Marcelo Ricardo Leitner 2016-06-02 100
df2729c3238ed8 Xin Long 2017-04-01 101 /* update dst or transport
pathmtu if in need */
df2729c3238ed8 Xin Long 2017-04-01 102 if
(!sctp_transport_dst_check(tp)) {
feddd6c1af30ab Marcelo Ricardo Leitner 2018-04-26 103 sctp_transport_route(tp, NULL,
sp);
df2729c3238ed8 Xin Long 2017-04-01 104 if (asoc->param_flags &
SPP_PMTUD_ENABLE)
3ebfdf082184d0 Xin Long 2017-04-04 105 sctp_assoc_sync_pmtu(asoc);
7307e4fa4d295f Xin Long 2021-06-22 106 } else if
(!sctp_transport_pl_enabled(tp) &&
e6927d4d69af5f Xin Long 2021-07-21 107 asoc->param_flags &
SPP_PMTUD_ENABLE)
e6927d4d69af5f Xin Long 2021-07-21 108 if
(!sctp_transport_pmtu_check(tp))
69fec325a64383 Xin Long 2018-11-18 109 sctp_assoc_sync_pmtu(asoc);
df2729c3238ed8 Xin Long 2017-04-01 110 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 111
d805397c3822d5 Xin Long 2018-10-15 112 if (asoc->pmtu_pending) {
d805397c3822d5 Xin Long 2018-10-15 113 if (asoc->param_flags &
SPP_PMTUD_ENABLE)
d805397c3822d5 Xin Long 2018-10-15 114 sctp_assoc_sync_pmtu(asoc);
d805397c3822d5 Xin Long 2018-10-15 115 asoc->pmtu_pending = 0;
d805397c3822d5 Xin Long 2018-10-15 116 }
d805397c3822d5 Xin Long 2018-10-15 117
^1da177e4c3f41 Linus Torvalds 2005-04-16 118 /* If there a is a prepend chunk
stick it on the list before
^1da177e4c3f41 Linus Torvalds 2005-04-16 119 * any other chunks get
appended.
^1da177e4c3f41 Linus Torvalds 2005-04-16 120 */
df2729c3238ed8 Xin Long 2017-04-01 121 if (ecn_capable) {
df2729c3238ed8 Xin Long 2017-04-01 122 struct sctp_chunk *chunk =
sctp_get_ecne_prepend(asoc);
df2729c3238ed8 Xin Long 2017-04-01 123
^1da177e4c3f41 Linus Torvalds 2005-04-16 124 if (chunk)
^1da177e4c3f41 Linus Torvalds 2005-04-16 125
sctp_packet_append_chunk(packet, chunk);
^1da177e4c3f41 Linus Torvalds 2005-04-16 126 }
df2729c3238ed8 Xin Long 2017-04-01 127
df2729c3238ed8 Xin Long 2017-04-01 128 if (!tp->dst)
df2729c3238ed8 Xin Long 2017-04-01 129 return;
df2729c3238ed8 Xin Long 2017-04-01 130
df2729c3238ed8 Xin Long 2017-04-01 131 /* set packet max_size with
gso_max_size if gso is enabled*/
df2729c3238ed8 Xin Long 2017-04-01 @132 rcu_read_lock();
df2729c3238ed8 Xin Long 2017-04-01 133 if (__sk_dst_get(sk) !=
tp->dst) {
df2729c3238ed8 Xin Long 2017-04-01 134 dst_hold(tp->dst);
df2729c3238ed8 Xin Long 2017-04-01 135 sk_setup_caps(sk, tp->dst);
df2729c3238ed8 Xin Long 2017-04-01 136 }
df2729c3238ed8 Xin Long 2017-04-01 137 packet->max_size =
sk_can_gso(sk) ? tp->dst->dev->gso_max_size
df2729c3238ed8 Xin Long 2017-04-01 138 : asoc->pathmtu;
df2729c3238ed8 Xin Long 2017-04-01 139 rcu_read_unlock();
^1da177e4c3f41 Linus Torvalds 2005-04-16 140 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 141
---
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