[PATCH AUTOSEL 4.18 16/56] tls: possible hang when do_tcp_sendpages hits sndbuf is full case

From: John Fastabend [ Upstream commit 67db7cd249e71f64346f481b629724376d063e08 ] Currently, the lower protocols sk_write_space handler is not called if TLS is sending a scatterlist via tls_push_sg. However, normally tls_push_sg calls do_tcp_sendpage, which may be under memory pressure, that

[PATCH AUTOSEL 4.18 16/56] tls: possible hang when do_tcp_sendpages hits sndbuf is full case

From: John Fastabend [ Upstream commit 67db7cd249e71f64346f481b629724376d063e08 ] Currently, the lower protocols sk_write_space handler is not called if TLS is sending a scatterlist via tls_push_sg. However, normally tls_push_sg calls do_tcp_sendpage, which may be under memory pressure, that