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H A Dprotocol.cdiff f70cad1085d1e01d3ec73c1078405f906237feee Wed Sep 22 12:26:41 CDT 2021 Paolo Abeni <pabeni@redhat.com> mptcp: stop relying on tcp_tx_skb_cache

We want to revert the skb TX cache, but MPTCP is currently
using it unconditionally.

Rework the MPTCP tx code, so that tcp_tx_skb_cache is not
needed anymore: do the whole coalescing check, skb allocation
skb initialization/update inside mptcp_sendmsg_frag(), quite
alike the current TCP code.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>