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tcp: move tp->bytes_acked to tcp_sock_write_tx group

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tp->bytes_acked is touched in TX path only.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260430100021.211139-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet
2026-04-30 10:00:20 +00:00
committed by Jakub Kicinski
parent 07db42c4b3
commit dd033ec406
3 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/networking/net_cachelines/tcp_sock.rst
View File

@@ -22,7 +22,7 @@ u32 snd_nxt read_write read_m
u32 segs_out read_write read_write __tcp_transmit_skb
u32 data_segs_out read_write __tcp_transmit_skb,tcp_update_skb_after_send
u64 bytes_sent read_write __tcp_transmit_skb
u64 bytes_acked read_write tcp_snd_una_update/tcp_ack
u64 bytes_acked read_write tcp_snd_una_update/tcp_ack
u32 dsack_dups
u32 snd_una read_mostly read_write tcp_wnd_end,tcp_urg_mode,tcp_minshall_check,tcp_cwnd_validate(tx);tcp_ack,tcp_may_update_window,tcp_clean_rtx_queue(write),tcp_ack_tstamp(rx)
u32 snd_sml read_write tcp_minshall_check,tcp_minshall_update

8
include/linux/tcp.h
View File

@@ -255,6 +255,10 @@ struct tcp_sock {
__cacheline_group_begin(tcp_sock_write_tx) ____cacheline_aligned;
u32 delivered; /* Total data packets delivered incl. rexmits */
u32 delivered_ce; /* Like the above but only ECE marked packets */
u64 bytes_acked; /* RFC4898 tcpEStatsAppHCThruOctetsAcked
* sum(delta(snd_una)), or how many bytes
* were acked.
*/
u64 bytes_sent; /* RFC4898 tcpEStatsPerfHCDataOctetsOut
* total number of data bytes sent.
*/
@@ -349,10 +353,6 @@ struct tcp_sock {
u32 rcv_rtt_last_tsecr;
u32 delivered_ecn_bytes[3];
u16 pkts_acked_ewma;/* Pkts acked EWMA for AccECN cep heuristic */
u64 bytes_acked; /* RFC4898 tcpEStatsAppHCThruOctetsAcked
* sum(delta(snd_una)), or how many bytes
* were acked.
*/
struct {
u32 rtt_us;
u32 seq;

2
net/ipv4/tcp.c
View File

@@ -5233,6 +5233,7 @@ static void __init tcp_struct_check(void)
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, data_segs_out);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, delivered);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, delivered_ce);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, bytes_acked);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, bytes_sent);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, first_tx_mstamp);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_tx, delivered_mstamp);
@@ -5282,7 +5283,6 @@ static void __init tcp_struct_check(void)
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);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, bytes_acked);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, rcv_rtt_est);
CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_write_rx, rcvq_space);
}