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authorEric Dumazet <edumazet@google.com>2026-04-30 13:00:21 +0300
committerJakub Kicinski <kuba@kernel.org>2026-05-02 03:22:45 +0300
commitaffe6c27651a359cf69c15b33b86e4d3f226010e (patch)
tree4cad3325156b4ac5239e1e1cb6d8614663647a38
parentdd033ec406b4d9eade3e0fd998ec9bfa50db42ba (diff)
downloadlinux-affe6c27651a359cf69c15b33b86e4d3f226010e.tar.xz
tcp: move max_packets_out, cwnd_usage_seq, rate_delivered and rate_interval_us to tcp_sock_write_tx group
These fields are used in TX path. Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260430100021.211139-6-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--include/linux/tcp.h8
-rw-r--r--net/ipv4/tcp.c8
2 files changed, 8 insertions, 8 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index d3650f04d942..8a6807082672 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -276,6 +276,10 @@ struct tcp_sock {
u32 lsndtime; /* timestamp of last sent data packet (for restart window) */
u32 mdev_us; /* medium deviation */
u32 rtt_seq; /* sequence number to update rttvar */
+ u32 max_packets_out; /* max packets_out in last window */
+ u32 cwnd_usage_seq; /* right edge of cwnd usage tracking flight */
+ u32 rate_delivered; /* saved rate sample: packets delivered */
+ u32 rate_interval_us; /* saved rate sample: time elapsed */
u64 tcp_wstamp_ns; /* departure time for next sent data packet */
u64 accecn_opt_tstamp; /* Last AccECN option sent timestamp */
struct list_head tsorted_sent_queue; /* time-sorted sent but un-SACKed skbs */
@@ -346,10 +350,6 @@ struct tcp_sock {
* total number of data segments in.
*/
u32 rcv_wup; /* rcv_nxt on last window update sent */
- u32 max_packets_out; /* max packets_out in last window */
- u32 cwnd_usage_seq; /* right edge of cwnd usage tracking flight */
- u32 rate_delivered; /* saved rate sample: packets delivered */
- u32 rate_interval_us; /* saved rate sample: time elapsed */
u32 rcv_rtt_last_tsecr;
u32 delivered_ecn_bytes[3];
u16 pkts_acked_ewma;/* Pkts acked EWMA for AccECN cep heuristic */
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 7211d2c669b8..21ece4c71612 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -5247,6 +5247,10 @@ static void __init tcp_struct_check(void)
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, tcp_wstamp_ns);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, accecn_opt_tstamp);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, rtt_seq);
+ CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, max_packets_out);
+ CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, cwnd_usage_seq);
+ CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, rate_delivered);
+ CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, rate_interval_us);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, tsorted_sent_queue);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, highest_sack);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, ecn_flags);
@@ -5276,10 +5280,6 @@ static void __init tcp_struct_check(void)
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, bytes_received);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, data_segs_in);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, rcv_wup);
- CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, max_packets_out);
- CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, cwnd_usage_seq);
- CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, rate_delivered);
- CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, rate_interval_us);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, rcv_rtt_last_tsecr);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, delivered_ecn_bytes);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, pkts_acked_ewma);