@@ -97,15 +97,15 @@ struct mptcp_out_options {
};
#define MPTCP_SCHED_NAME_MAX 16
+#define MPTCP_SUBFLOWS_MAX 8
struct mptcp_sched_data {
- struct sock *sock;
- bool call_again;
+ struct mptcp_subflow_context *contexts[MPTCP_SUBFLOWS_MAX];
};
struct mptcp_sched_ops {
- void (*get_subflow)(const struct mptcp_sock *msk, bool reinject,
- struct mptcp_sched_data *data);
+ unsigned long (*get_subflow)(const struct mptcp_sock *msk, bool reinject,
+ struct mptcp_sched_data *data);
char name[MPTCP_SCHED_NAME_MAX];
struct module *owner;
@@ -231,10 +231,14 @@ extern __u32 tcp_slow_start(struct tcp_sock *tp, __u32 acked) __ksym;
extern void tcp_cong_avoid_ai(struct tcp_sock *tp, __u32 w, __u32 acked) __ksym;
#define MPTCP_SCHED_NAME_MAX 16
+#define MPTCP_SUBFLOWS_MAX 8
+
+struct mptcp_subflow_context {
+ struct sock *tcp_sock; /* tcp sk backpointer */
+} __attribute__((preserve_access_index));
struct mptcp_sched_data {
- struct sock *sock;
- bool call_again;
+ struct mptcp_subflow_context *contexts[MPTCP_SUBFLOWS_MAX];
};
struct mptcp_sched_ops {
@@ -243,8 +247,8 @@ struct mptcp_sched_ops {
void (*init)(const struct mptcp_sock *msk);
void (*release)(const struct mptcp_sock *msk);
- void (*get_subflow)(const struct mptcp_sock *msk, bool reinject,
- struct mptcp_sched_data *data);
+ unsigned long (*get_subflow)(const struct mptcp_sock *msk, bool reinject,
+ struct mptcp_sched_data *data);
void *owner;
};
Use bitmap instead of sock in struct mptcp_sched_data. Please update the commit log: ''' This patch defines struct mptcp_sched_ops, which has three struct members, name, owner and list, and three function pointers, init, release and get_subflow. Add the scheduler registering, unregistering and finding functions to add, delete and find a packet scheduler on the global list mptcp_sched_list. The BPF scheduler function get_subflow() has a struct mptcp_sched_data parameter, which contains a subflow pointers array. It returns a bitmap of which subflow or subflows in the array are picked by the scheduler to send data. ''' Signed-off-by: Geliang Tang <geliang.tang@suse.com> --- include/net/mptcp.h | 8 ++++---- tools/testing/selftests/bpf/bpf_tcp_helpers.h | 12 ++++++++---- 2 files changed, 12 insertions(+), 8 deletions(-)