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| author |   Florian Westphal <fw@strlen.de> | 2021-09-17 16:33:18 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-09-18 14:20:00 +0100 |
| commit | 61bc6e82f92ec105505266e484d90a935e1249ac (patch) | |
| tree | 1d188dec8b3ebb92979a3b89d9b7e308ad15f485 /net/mptcp/sockopt.c | |
| parent | Merge branch 'macb-MII-on-RGMII' (diff) | |
| download | linux-dev-61bc6e82f92ec105505266e484d90a935e1249ac.tar.xz linux-dev-61bc6e82f92ec105505266e484d90a935e1249ac.zip | |
mptcp: add new mptcp_fill_diag helper
Will be re-used from getsockopt path.
Since diag can be a module, we can't export the helper from diag, it
needs to be moved to core.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/mptcp/sockopt.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 8c03afac5ca0..54f0d521a399 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -670,6 +670,38 @@ out: return ret; } +void mptcp_diag_fill_info(struct mptcp_sock *msk, struct mptcp_info *info) +{ + struct sock *sk = &msk->sk.icsk_inet.sk; + bool slow = lock_sock_fast(sk); + u32 flags = 0; + u8 val; + + info->mptcpi_subflows = READ_ONCE(msk->pm.subflows); + info->mptcpi_add_addr_signal = READ_ONCE(msk->pm.add_addr_signaled); + info->mptcpi_add_addr_accepted = READ_ONCE(msk->pm.add_addr_accepted); + info->mptcpi_local_addr_used = READ_ONCE(msk->pm.local_addr_used); + info->mptcpi_subflows_max = mptcp_pm_get_subflows_max(msk); + val = mptcp_pm_get_add_addr_signal_max(msk); + info->mptcpi_add_addr_signal_max = val; + val = mptcp_pm_get_add_addr_accept_max(msk); + info->mptcpi_add_addr_accepted_max = val; + info->mptcpi_local_addr_max = mptcp_pm_get_local_addr_max(msk); + if (test_bit(MPTCP_FALLBACK_DONE, &msk->flags)) + flags |= MPTCP_INFO_FLAG_FALLBACK; + if (READ_ONCE(msk->can_ack)) + flags |= MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED; + info->mptcpi_flags = flags; + info->mptcpi_token = READ_ONCE(msk->token); + info->mptcpi_write_seq = READ_ONCE(msk->write_seq); + info->mptcpi_snd_una = READ_ONCE(msk->snd_una); + info->mptcpi_rcv_nxt = READ_ONCE(msk->ack_seq); + info->mptcpi_csum_enabled = READ_ONCE(msk->csum_enabled); + + unlock_sock_fast(sk, slow); +} +EXPORT_SYMBOL_GPL(mptcp_diag_fill_info); + static int mptcp_getsockopt_sol_tcp(struct mptcp_sock *msk, int optname, char __user *optval, int __user *optlen) { |