diff mbox series

[net-next,v3,2/2] tcp: add more warn of socket in tcp_send_loss_probe()

Message ID 20241023081452.9151-3-kerneljasonxing@gmail.com (mailing list archive)
State Accepted
Commit 668d663989c77fcb2a92748645e4c394b03d5988
Delegated to: Netdev Maintainers
Headers show
Series tcp: add tcp_warn_once() common helper | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 12 this patch: 12
netdev/build_tools success Errors and warnings before: 157 (+1) this patch: 157 (+1)
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 15 this patch: 15
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 913 this patch: 913
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 3 this patch: 3
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-10-23--12-00 (tests: 777)

Commit Message

Jason Xing Oct. 23, 2024, 8:14 a.m. UTC 
From: Jason Xing <kernelxing@tencent.com>

Add two fields to print in the helper which here covers tcp_send_loss_probe().

Link: https://lore.kernel.org/all/5632e043-bdba-4d75-bc7e-bf58014492fd@redhat.com/
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Cc: Neal Cardwell <ncardwell@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
--
v3
Link: https://lore.kernel.org/all/20241021155245.83122-3-kerneljasonxing@gmail.com/
1. add missing string "invalid inflight: " (David)
2. add reviewed-by tag (David)
3. remove tcp_current_mss() due to possible change happening on the socket's state (Eric)

v2
Link:https://lore.kernel.org/all/CAL+tcoAr7RHhaZGV12wYDcPPPaubAqdxMCmy7Jujtr8b3+bY=w@mail.gmail.com/
1. use "" instead of NULL in tcp_send_loss_probe()
---
 include/net/tcp.h     | 3 ++-
 net/ipv4/tcp_output.c | 4 +---
 2 files changed, 3 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 8b8d94bb1746..e9b37b76e894 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -2433,8 +2433,9 @@  void tcp_plb_update_state_upon_rto(struct sock *sk, struct tcp_plb_state *plb);
 static inline void tcp_warn_once(const struct sock *sk, bool cond, const char *str)
 {
 	WARN_ONCE(cond,
-		  "%sout:%u sacked:%u lost:%u retrans:%u tlp_high_seq:%u sk_state:%u ca_state:%u advmss:%u mss_cache:%u pmtu:%u\n",
+		  "%scwn:%u out:%u sacked:%u lost:%u retrans:%u tlp_high_seq:%u sk_state:%u ca_state:%u advmss:%u mss_cache:%u pmtu:%u\n",
 		  str,
+		  tcp_snd_cwnd(tcp_sk(sk)),
 		  tcp_sk(sk)->packets_out, tcp_sk(sk)->sacked_out,
 		  tcp_sk(sk)->lost_out, tcp_sk(sk)->retrans_out,
 		  tcp_sk(sk)->tlp_high_seq, sk->sk_state,
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 054244ce5117..5485a70b5fe5 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2954,9 +2954,7 @@  void tcp_send_loss_probe(struct sock *sk)
 	}
 	skb = skb_rb_last(&sk->tcp_rtx_queue);
 	if (unlikely(!skb)) {
-		WARN_ONCE(tp->packets_out,
-			  "invalid inflight: %u state %u cwnd %u mss %d\n",
-			  tp->packets_out, sk->sk_state, tcp_snd_cwnd(tp), mss);
+		tcp_warn_once(sk, tp->packets_out, "invalid inflight: ");
 		smp_store_release(&inet_csk(sk)->icsk_pending, 0);
 		return;
 	}