diff options
| author | Kishen Maloor <kishen.maloor@intel.com> | 2022-07-05 23:32:14 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-06 13:50:26 +0200 |
| commit | 892f396c8e68faab7f76ff49cf39e9fbbeea4097 (patch) | |
| tree | d80b80b9caa213f1403abc22baaf99de32855b08 /net/mptcp/pm_userspace.c | |
| parent | mptcp: Acquire the subflow socket lock before modifying MP_PRIO flags (diff) | |
| download | linux-892f396c8e68faab7f76ff49cf39e9fbbeea4097.tar.xz linux-892f396c8e68faab7f76ff49cf39e9fbbeea4097.zip | |
mptcp: netlink: issue MP_PRIO signals from userspace PMs
This change updates MPTCP_PM_CMD_SET_FLAGS to allow userspace PMs
to issue MP_PRIO signals over a specific subflow selected by
the connection token, local and remote address+port.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/286
Fixes: 702c2f646d42 ("mptcp: netlink: allow userspace-driven subflow establishment")
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Kishen Maloor <kishen.maloor@intel.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/pm_userspace.c')
| -rw-r--r-- | net/mptcp/pm_userspace.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 26212bebc5ed..51e2f066d54f 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -420,3 +420,33 @@ destroy_err: sock_put((struct sock *)msk); return err; } + +int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token, + struct mptcp_pm_addr_entry *loc, + struct mptcp_pm_addr_entry *rem, u8 bkup) +{ + struct mptcp_sock *msk; + int ret = -EINVAL; + u32 token_val; + + token_val = nla_get_u32(token); + + msk = mptcp_token_get_sock(net, token_val); + if (!msk) + return ret; + + if (!mptcp_pm_is_userspace(msk)) + goto set_flags_err; + + if (loc->addr.family == AF_UNSPEC || + rem->addr.family == AF_UNSPEC) + goto set_flags_err; + + lock_sock((struct sock *)msk); + ret = mptcp_pm_nl_mp_prio_send_ack(msk, &loc->addr, &rem->addr, bkup); + release_sock((struct sock *)msk); + +set_flags_err: + sock_put((struct sock *)msk); + return ret; +} |