diff options
| author | Jeremy Harris <jgh@exim.org> | 2025-04-23 13:43:33 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-04-24 18:21:04 -0700 |
| commit | bc2550b4e195754fbb24aac1f012d3dd9e3b4edc (patch) | |
| tree | 8ba89875152337e315411b96215348401799c10c | |
| parent | 4134bb726efdc7a4a64bd0f776359cb0564564b2 (diff) | |
tcp: fastopen: note that a child socket was created
tcp: fastopen: note that a child socket was created
This uses up the last bit in a field of tcp_sock.
Signed-off-by: Jeremy Harris <jgh@exim.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Link: https://patch.msgid.link/20250423124334.4916-2-jgh@exim.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/linux/tcp.h | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 1 | ||||
| -rw-r--r-- | net/ipv4/tcp_fastopen.c | 1 |
3 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 1669d95bb0f9..a8af71623ba7 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -385,7 +385,8 @@ struct tcp_sock { syn_fastopen:1, /* SYN includes Fast Open option */ syn_fastopen_exp:1,/* SYN includes Fast Open exp. option */ syn_fastopen_ch:1, /* Active TFO re-enabling probe */ - syn_data_acked:1;/* data in SYN is acked by SYN-ACK */ + syn_data_acked:1,/* data in SYN is acked by SYN-ACK */ + syn_fastopen_child:1; /* created TFO passive child socket */ u8 keepalive_probes; /* num of allowed keep alive probes */ u32 tcp_tx_delay; /* delay (in usec) added to TX packets */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index e0e96f8fd47c..df3eb0fb7cb3 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3409,6 +3409,7 @@ int tcp_disconnect(struct sock *sk, int flags) tp->rack.reo_wnd_persist = 0; tp->rack.dsack_seen = 0; tp->syn_data_acked = 0; + tp->syn_fastopen_child = 0; tp->rx_opt.saw_tstamp = 0; tp->rx_opt.dsack = 0; tp->rx_opt.num_sacks = 0; diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c index 1a6b1bc54245..9b83d639b5ac 100644 --- a/net/ipv4/tcp_fastopen.c +++ b/net/ipv4/tcp_fastopen.c @@ -401,6 +401,7 @@ fastopen: } NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPFASTOPENPASSIVE); + tcp_sk(child)->syn_fastopen_child = 1; return child; } NET_INC_STATS(sock_net(sk), |