diff options
| -rw-r--r-- | include/uapi/linux/mptcp.h | 3 | ||||
| -rw-r--r-- | net/mptcp/pm_kernel.c | 38 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 1 | ||||
| -rw-r--r-- | net/mptcp/sockopt.c | 2 |
4 files changed, 40 insertions, 4 deletions
diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h index 87cfab874e24..04eea6d1d0a9 100644 --- a/include/uapi/linux/mptcp.h +++ b/include/uapi/linux/mptcp.h @@ -70,7 +70,8 @@ struct mptcp_info { __u64 mptcpi_bytes_acked; __u8 mptcpi_subflows_total; __u8 mptcpi_endp_laminar_max; - __u8 reserved[2]; + __u8 mptcpi_endp_fullmesh_max; + __u8 reserved; __u32 mptcpi_last_data_sent; __u32 mptcpi_last_data_recv; __u32 mptcpi_last_ack_recv; diff --git a/net/mptcp/pm_kernel.c b/net/mptcp/pm_kernel.c index 2ae95476dba3..e2918c68ff02 100644 --- a/net/mptcp/pm_kernel.c +++ b/net/mptcp/pm_kernel.c @@ -22,6 +22,7 @@ struct pm_nl_pernet { u8 endp_signal_max; u8 endp_subflow_max; u8 endp_laminar_max; + u8 endp_fullmesh_max; u8 limit_add_addr_accepted; u8 limit_extra_subflows; u8 next_id; @@ -70,6 +71,14 @@ u8 mptcp_pm_get_endp_laminar_max(const struct mptcp_sock *msk) } EXPORT_SYMBOL_GPL(mptcp_pm_get_endp_laminar_max); +u8 mptcp_pm_get_endp_fullmesh_max(const struct mptcp_sock *msk) +{ + struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk); + + return READ_ONCE(pernet->endp_fullmesh_max); +} +EXPORT_SYMBOL_GPL(mptcp_pm_get_endp_fullmesh_max); + u8 mptcp_pm_get_limit_add_addr_accepted(const struct mptcp_sock *msk) { struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk); @@ -603,9 +612,12 @@ fill_local_addresses_vec(struct mptcp_sock *msk, struct mptcp_addr_info *remote, int i; /* If there is at least one MPTCP endpoint with a fullmesh flag */ - i = fill_local_addresses_vec_fullmesh(msk, remote, locals, c_flag_case); - if (i) - return i; + if (mptcp_pm_get_endp_fullmesh_max(msk)) { + i = fill_local_addresses_vec_fullmesh(msk, remote, locals, + c_flag_case); + if (i) + return i; + } /* If there is at least one MPTCP endpoint with a laminar flag */ if (mptcp_pm_get_endp_laminar_max(msk)) @@ -790,6 +802,10 @@ find_next: addr_max = pernet->endp_laminar_max; WRITE_ONCE(pernet->endp_laminar_max, addr_max + 1); } + if (entry->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) { + addr_max = pernet->endp_fullmesh_max; + WRITE_ONCE(pernet->endp_fullmesh_max, addr_max + 1); + } pernet->endpoints++; if (!entry->addr.port) @@ -1187,6 +1203,10 @@ int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info) addr_max = pernet->endp_laminar_max; WRITE_ONCE(pernet->endp_laminar_max, addr_max - 1); } + if (entry->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) { + addr_max = pernet->endp_fullmesh_max; + WRITE_ONCE(pernet->endp_fullmesh_max, addr_max - 1); + } pernet->endpoints--; list_del_rcu(&entry->list); @@ -1502,6 +1522,18 @@ int mptcp_pm_nl_set_flags(struct mptcp_pm_addr_entry *local, changed = (local->flags ^ entry->flags) & mask; entry->flags = (entry->flags & ~mask) | (local->flags & mask); *local = *entry; + + if (changed & MPTCP_PM_ADDR_FLAG_FULLMESH) { + u8 addr_max = pernet->endp_fullmesh_max; + + if (entry->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) + addr_max++; + else + addr_max--; + + WRITE_ONCE(pernet->endp_fullmesh_max, addr_max); + } + spin_unlock_bh(&pernet->lock); mptcp_pm_nl_set_flags_all(net, local, changed); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 379a88e14e8d..9a3429175758 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1183,6 +1183,7 @@ void __mptcp_pm_kernel_worker(struct mptcp_sock *msk); u8 mptcp_pm_get_endp_signal_max(const struct mptcp_sock *msk); u8 mptcp_pm_get_endp_subflow_max(const struct mptcp_sock *msk); u8 mptcp_pm_get_endp_laminar_max(const struct mptcp_sock *msk); +u8 mptcp_pm_get_endp_fullmesh_max(const struct mptcp_sock *msk); u8 mptcp_pm_get_limit_add_addr_accepted(const struct mptcp_sock *msk); u8 mptcp_pm_get_limit_extra_subflows(const struct mptcp_sock *msk); diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index a28a48385885..de90a2897d2d 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -982,6 +982,8 @@ void mptcp_diag_fill_info(struct mptcp_sock *msk, struct mptcp_info *info) mptcp_pm_get_endp_subflow_max(msk); info->mptcpi_endp_laminar_max = mptcp_pm_get_endp_laminar_max(msk); + info->mptcpi_endp_fullmesh_max = + mptcp_pm_get_endp_fullmesh_max(msk); } if (__mptcp_check_fallback(msk)) |