diff options
| author | Mat Martineau <mathew.j.martineau@linux.intel.com> | 2020-01-09 07:59:18 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-09 18:41:41 -0800 |
| commit | 1323059301c8f36d933876233516245d882346a6 (patch) | |
| tree | 0ad33261f1cc723e03993cdf85edc54b7703f9d9 /include/linux | |
| parent | c74a39c861aeaf6b789b7abdbb3256f54c9fb365 (diff) | |
tcp, ulp: Add clone operation to tcp_ulp_ops
If ULP is used on a listening socket, icsk_ulp_ops and icsk_ulp_data are
copied when the listener is cloned. Sometimes the clone is immediately
deleted, which will invoke the release op on the clone and likely
corrupt the listening socket's icsk_ulp_data.
The clone operation is invoked immediately after the clone is copied and
gives the ULP type an opportunity to set up the clone socket and its
icsk_ulp_data.
The MPTCP ULP clone will silently fallback to plain TCP on allocation
failure, so 'clone()' does not need to return an error code.
v6 -> v7:
- move and rename ulp clone helper to make it inline-friendly
v5 -> v6:
- clarified MPTCP clone usage in commit message
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions