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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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21
include/net/mptcp.h
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@@ -96,6 +96,27 @@ struct mptcp_out_options {
#endif
};
#define MPTCP_SCHED_NAME_MAX 16
#define MPTCP_SUBFLOWS_MAX 8
struct mptcp_sched_data {
bool reinject;
u8 subflows;
struct mptcp_subflow_context *contexts[MPTCP_SUBFLOWS_MAX];
};
struct mptcp_sched_ops {
int (*get_subflow)(struct mptcp_sock *msk,
struct mptcp_sched_data *data);
char name[MPTCP_SCHED_NAME_MAX];
struct module *owner;
struct list_head list;
void (*init)(struct mptcp_sock *msk);
void (*release)(struct mptcp_sock *msk);
} ____cacheline_aligned_in_smp;
#ifdef CONFIG_MPTCP
void mptcp_init(void);