diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2022-05-04 14:54:06 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-05-05 19:00:15 -0700 |
| commit | ea66758c1795cef81dc59cd5240e9d0f5c5207cf (patch) | |
| tree | 3ca9c4c3fa9481132eb9d7b8ef955a77c27d3e29 /net/mptcp/options.c | |
| parent | 92be2f522777b775a2d83b00c3690732c1243dfc (diff) | |
tcp: allow MPTCP to update the announced window
The MPTCP RFC requires that the MPTCP-level receive window's
right edge never moves backward. Currently the MPTCP code
enforces such constraint while tracking the right edge, but it
does not reflects it on the wire, as MPTCP lacks a suitable hook
to update accordingly the TCP header.
This change modifies the existing mptcp_write_options() hook,
providing the current packet's TCP header to the MPTCP protocol,
so that the next patch could implement the above mentioned
constraint.
No functional changes intended.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/options.c')
| -rw-r--r-- | net/mptcp/options.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c index e05d9458a025..2570911735ab 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1265,7 +1265,7 @@ static u16 mptcp_make_csum(const struct mptcp_ext *mpext) ~csum_unfold(mpext->csum)); } -void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp, +void mptcp_write_options(struct tcphdr *th, __be32 *ptr, struct tcp_sock *tp, struct mptcp_out_options *opts) { const struct sock *ssk = (const struct sock *)tp; |