[PATCH net-next] tcp: remove unused hash_size from struct tcp_out_options
From: Keita Morisaki <hidden>
Date: 2026-03-05 02:27:22
Also in:
lkml
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
hash_size is declared but never read. The MD5 path always uses a fixed size of 16, and the TCP-AO path uses tcp_ao_maclen(). Suggested-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Keita Morisaki <redacted> --- net/ipv4/tcp_output.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 63ee037f46e50..f0e04ebd8b723 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c@@ -441,7 +441,6 @@ struct tcp_out_options { u8 ws; /* window scale, 0 to disable */ u8 num_accecn_fields:7, /* number of AccECN fields needed */ use_synack_ecn_bytes:1; /* Use synack_ecn_bytes or not */ - u8 hash_size; /* bytes in hash_location */ __u8 *hash_location; /* temporary pointer, overloaded */ __u32 tsval, tsecr; /* need to include OPTION_TS */ struct tcp_fastopen_cookie *fastopen_cookie; /* Fast open cookie */
base-commit: 21fc6b53f12379f3f9b29830be3597a322261df8 -- 2.34.1