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| author | Eric Dumazet <edumazet@google.com> | 2026-03-07 12:22:14 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-10 05:31:01 +0300 |
| commit | e8eb33d650cd5e60b008f9d958262e489de6e7a9 (patch) | |
| tree | f5815478fde4ff637cc407ed6c5af4702e5c9e82 /include | |
| parent | bf3471e6e6c02137dc0d26caa783ac1849f9aab8 (diff) | |
| download | linux-e8eb33d650cd5e60b008f9d958262e489de6e7a9.tar.xz | |
tcp: move sysctl_tcp_shrink_window to netns_ipv4_read_txrx group
Commit 18fd64d25422 ("netns-ipv4: reorganize netns_ipv4 fast path
variables") missed that __tcp_select_window() is reading
net->ipv4.sysctl_tcp_shrink_window.
Move this field to netns_ipv4_read_txrx group, as __tcp_select_window()
is used both in tx and rx paths.
Saves a potential cache line miss.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260307092214.2433548-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netns/ipv4.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 4c249aeaf7f1..38624beff9b3 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -74,6 +74,7 @@ struct netns_ipv4 { /* TXRX readonly hotpath cache lines */ __cacheline_group_begin(netns_ipv4_read_txrx); + u8 sysctl_tcp_shrink_window; __cacheline_group_end(netns_ipv4_read_txrx); /* RX readonly hotpath cache line */ @@ -122,7 +123,6 @@ struct netns_ipv4 { #endif bool fib_has_custom_local_routes; bool fib_offload_disabled; - u8 sysctl_tcp_shrink_window; #ifdef CONFIG_IP_ROUTE_CLASSID atomic_t fib_num_tclassid_users; #endif |