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authorJakub Kicinski <kuba@kernel.org>2020-10-15 12:43:21 -0700
committerJakub Kicinski <kuba@kernel.org>2020-10-15 12:43:21 -0700
commit2295cddf99e3f7c2be2b1160e2f5e53cc35b09be (patch)
tree2c5a619c8aee5ef68028a65a1c059736b005846b /net/mptcp/subflow.c
parent346e320cb2103edef709c4466a29140c4a8e527a (diff)
parent2ecbc1f684482b4ed52447a39903bd9b0f222898 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflicts in net/mptcp/protocol.h and tools/testing/selftests/net/Makefile. In both cases code was added on both sides in the same place so just keep both. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/subflow.c')
-rw-r--r--net/mptcp/subflow.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 5d91e3a2cd30..ac4a1fe3550b 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -271,6 +271,19 @@ static bool subflow_thmac_valid(struct mptcp_subflow_context *subflow)
return thmac == subflow->thmac;
}
+void mptcp_subflow_reset(struct sock *ssk)
+{
+ struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk);
+ struct sock *sk = subflow->conn;
+
+ tcp_set_state(ssk, TCP_CLOSE);
+ tcp_send_active_reset(ssk, GFP_ATOMIC);
+ tcp_done(ssk);
+ if (!test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &mptcp_sk(sk)->flags) &&
+ schedule_work(&mptcp_sk(sk)->work))
+ sock_hold(sk);
+}
+
static void subflow_finish_connect(struct sock *sk, const struct sk_buff *skb)
{
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
@@ -343,8 +356,7 @@ fallback:
return;
do_reset:
- tcp_send_active_reset(sk, GFP_ATOMIC);
- tcp_done(sk);
+ mptcp_subflow_reset(sk);
}
struct request_sock_ops mptcp_subflow_request_sock_ops;
@@ -770,12 +782,11 @@ static enum mapping_status get_mapping_status(struct sock *ssk,
if (!mpext->dsn64) {
map_seq = expand_seq(subflow->map_seq, subflow->map_data_len,
mpext->data_seq);
- subflow->use_64bit_ack = 0;
pr_debug("expanded seq=%llu", subflow->map_seq);
} else {
map_seq = mpext->data_seq;
- subflow->use_64bit_ack = 1;
}
+ WRITE_ONCE(mptcp_sk(subflow->conn)->use_64bit_ack, !!mpext->dsn64);
if (subflow->map_valid) {
/* Allow replacing only with an identical map */