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| author | Geliang Tang <geliang.tang@suse.com> | 2022-11-10 15:23:19 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-11 21:19:46 -0800 |
| commit | 73a0052a61f98354f39f461e03f1a7e513b84578 (patch) | |
| tree | 3e913422a5027219fb3ee3c348a391c23e141007 /net/mptcp | |
| parent | 00df24f19179c8e8c81fffa95c91d5c2eab8964e (diff) | |
| download | linux-stable-73a0052a61f98354f39f461e03f1a7e513b84578.tar.gz linux-stable-73a0052a61f98354f39f461e03f1a7e513b84578.tar.bz2 linux-stable-73a0052a61f98354f39f461e03f1a7e513b84578.zip | |
mptcp: change 'first' as a parameter
The function mptcp_subflow_process_delegated() uses the input ssk first,
while __mptcp_check_push() invokes the packet scheduler first.
So this patch adds a new parameter named 'first' for the function
__mptcp_subflow_push_pending() to deal with these two cases separately.
With this change, the code that invokes the packet scheduler in the
function __mptcp_check_push() can be removed, and replaced by invoking
__mptcp_subflow_push_pending() directly.
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/protocol.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 64d7070de901..5a344788f843 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1602,7 +1602,7 @@ out: __mptcp_check_send_data_fin(sk); } -static void __mptcp_subflow_push_pending(struct sock *sk, struct sock *ssk) +static void __mptcp_subflow_push_pending(struct sock *sk, struct sock *ssk, bool first) { struct mptcp_sock *msk = mptcp_sk(sk); struct mptcp_sendmsg_info info = { @@ -1611,7 +1611,6 @@ static void __mptcp_subflow_push_pending(struct sock *sk, struct sock *ssk) struct mptcp_data_frag *dfrag; struct sock *xmit_ssk; int len, copied = 0; - bool first = true; info.flags = 0; while ((dfrag = mptcp_send_head(sk))) { @@ -1621,8 +1620,7 @@ static void __mptcp_subflow_push_pending(struct sock *sk, struct sock *ssk) while (len > 0) { int ret = 0; - /* the caller already invoked the packet scheduler, - * check for a different subflow usage only after + /* check for a different subflow usage only after * spooling the first chunk of data */ xmit_ssk = first ? ssk : mptcp_subflow_get_send(msk); @@ -3220,16 +3218,10 @@ void __mptcp_check_push(struct sock *sk, struct sock *ssk) if (!mptcp_send_head(sk)) return; - if (!sock_owned_by_user(sk)) { - struct sock *xmit_ssk = mptcp_subflow_get_send(mptcp_sk(sk)); - - if (xmit_ssk == ssk) - __mptcp_subflow_push_pending(sk, ssk); - else if (xmit_ssk) - mptcp_subflow_delegate(mptcp_subflow_ctx(xmit_ssk), MPTCP_DELEGATE_SEND); - } else { + if (!sock_owned_by_user(sk)) + __mptcp_subflow_push_pending(sk, ssk, false); + else __set_bit(MPTCP_PUSH_PENDING, &mptcp_sk(sk)->cb_flags); - } } #define MPTCP_FLAGS_PROCESS_CTX_NEED (BIT(MPTCP_PUSH_PENDING) | \ @@ -3320,7 +3312,7 @@ void mptcp_subflow_process_delegated(struct sock *ssk) if (test_bit(MPTCP_DELEGATE_SEND, &subflow->delegated_status)) { mptcp_data_lock(sk); if (!sock_owned_by_user(sk)) - __mptcp_subflow_push_pending(sk, ssk); + __mptcp_subflow_push_pending(sk, ssk, true); else __set_bit(MPTCP_PUSH_PENDING, &mptcp_sk(sk)->cb_flags); mptcp_data_unlock(sk); |