Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Dmytro Shytyi |
143 |
58.85% |
2 |
13.33% |
| Paolo Abeni |
58 |
23.87% |
7 |
46.67% |
| Florian Westphal |
22 |
9.05% |
3 |
20.00% |
| Mat Martineau |
16 |
6.58% |
2 |
13.33% |
| Christoph Paasch |
4 |
1.65% |
1 |
6.67% |
| Total |
243 |
|
15 |
|
// SPDX-License-Identifier: GPL-2.0
/* MPTCP Fast Open Mechanism
*
* Copyright (c) 2021-2022, Dmytro SHYTYI
*/
#include "protocol.h"
void mptcp_fastopen_subflow_synack_set_params(struct mptcp_subflow_context *subflow,
struct request_sock *req)
{
struct sock *sk, *ssk;
struct sk_buff *skb;
struct tcp_sock *tp;
/* on early fallback the subflow context is deleted by
* subflow_syn_recv_sock()
*/
if (!subflow)
return;
ssk = subflow->tcp_sock;
sk = subflow->conn;
tp = tcp_sk(ssk);
subflow->is_mptfo = 1;
skb = skb_peek(&ssk->sk_receive_queue);
if (WARN_ON_ONCE(!skb))
return;
/* dequeue the skb from sk receive queue */
__skb_unlink(skb, &ssk->sk_receive_queue);
skb_ext_reset(skb);
mptcp_subflow_lend_fwdmem(subflow, skb);
/* We copy the fastopen data, but that don't belong to the mptcp sequence
* space, need to offset it in the subflow sequence, see mptcp_subflow_get_map_offset()
*/
tp->copied_seq += skb->len;
subflow->ssn_offset += skb->len;
/* Only the sequence delta is relevant */
MPTCP_SKB_CB(skb)->map_seq = -skb->len;
MPTCP_SKB_CB(skb)->end_seq = 0;
MPTCP_SKB_CB(skb)->offset = 0;
MPTCP_SKB_CB(skb)->has_rxtstamp = TCP_SKB_CB(skb)->has_rxtstamp;
MPTCP_SKB_CB(skb)->cant_coalesce = 1;
mptcp_data_lock(sk);
DEBUG_NET_WARN_ON_ONCE(sock_owned_by_user_nocheck(sk));
mptcp_borrow_fwdmem(sk, skb);
skb_set_owner_r(skb, sk);
__skb_queue_tail(&sk->sk_receive_queue, skb);
mptcp_sk(sk)->bytes_received += skb->len;
sk->sk_data_ready(sk);
mptcp_data_unlock(sk);
}