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mptcp: add struct mptcp_sched_ops

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This patch defines struct mptcp_sched_ops, which has three struct members,
name, owner and list, and four function pointers: init(), release() and
get_subflow().

The scheduler function get_subflow() have a struct mptcp_sched_data
parameter, which contains a reinject flag for retrans or not, a subflows
number and a mptcp_subflow_context array.

Add the scheduler registering, unregistering and finding functions to add,
delete and find a packet scheduler on the global list mptcp_sched_list.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20230821-upstream-net-next-20230818-v1-3-0c860fb256a8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Geliang Tang 2023-08-21 15:25:14 -07:00 • committed by Jakub Kicinski
parent ebc1e08f01
commit 740ebe35bd
4 changed files with 81 additions and 1 deletions
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3
net/mptcp/protocol.h
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@ -655,6 +655,9 @@ int mptcp_subflow_create_socket(struct sock *sk, unsigned short family,
void mptcp_info2sockaddr(const struct mptcp_addr_info *info,
struct sockaddr_storage *addr,
unsigned short family);
struct mptcp_sched_ops *mptcp_sched_find(const char *name);
int mptcp_register_scheduler(struct mptcp_sched_ops *sched);
void mptcp_unregister_scheduler(struct mptcp_sched_ops *sched);
static inline bool __tcp_can_send(const struct sock *ssk)
{