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authorWillem de Bruijn <willemb@google.com>2019-11-18 10:40:51 -0500
committerDavid S. Miller <davem@davemloft.net>2019-11-19 15:03:02 -0800
commitd4ffb02dee2fcb20e0c8086a8d1305bf885820bb (patch)
tree13860fc65238986228ef7e1fc98bf6cc707db7c8
parentdb96c2cb4870173ea9b08df130f1d1cc9b5dd53d (diff)
net/tls: enable sk_msg redirect to tls socket egress
Bring back tls_sw_sendpage_locked. sk_msg redirection into a socket with TLS_TX takes the following path: tcp_bpf_sendmsg_redir tcp_bpf_push_locked tcp_bpf_push kernel_sendpage_locked sock->ops->sendpage_locked Also update the flags test in tls_sw_sendpage_locked to allow flag MSG_NO_SHARED_FRAGS. bpf_tcp_sendmsg sets this. Link: https://lore.kernel.org/netdev/CA+FuTSdaAawmZ2N8nfDDKu3XLpXBbMtcCT0q4FntDD2gn8ASUw@mail.gmail.com/T/#t Link: https://github.com/wdebruij/kerneltools/commits/icept.2 Fixes: 0608c69c9a80 ("bpf: sk_msg, sock{map|hash} redirect through ULP") Fixes: f3de19af0f5b ("Revert \"net/tls: remove unused function tls_sw_sendpage_locked\"") Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/tls.h2
-rw-r--r--net/tls/tls_main.c1
-rw-r--r--net/tls/tls_sw.c11
3 files changed, 14 insertions, 0 deletions
diff --git a/include/net/tls.h b/include/net/tls.h
index 794e297483ea..f4ad831eaa02 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -356,6 +356,8 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx);
void tls_sw_strparser_arm(struct sock *sk, struct tls_context *ctx);
void tls_sw_strparser_done(struct tls_context *tls_ctx);
int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
+int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
+ int offset, size_t size, int flags);
int tls_sw_sendpage(struct sock *sk, struct page *page,
int offset, size_t size, int flags);
void tls_sw_cancel_work_tx(struct tls_context *tls_ctx);
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 0775ae40fcfb..f874cc0da45d 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -908,6 +908,7 @@ static int __init tls_register(void)
{
tls_sw_proto_ops = inet_stream_ops;
tls_sw_proto_ops.splice_read = tls_sw_splice_read;
+ tls_sw_proto_ops.sendpage_locked = tls_sw_sendpage_locked,
tls_device_init();
tcp_register_ulp(&tcp_tls_ulp_ops);
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 446f23c1f3ce..319735d5c084 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1204,6 +1204,17 @@ sendpage_end:
return copied ? copied : ret;
}
+int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
+ int offset, size_t size, int flags)
+{
+ if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
+ MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY |
+ MSG_NO_SHARED_FRAGS))
+ return -ENOTSUPP;
+
+ return tls_sw_do_sendpage(sk, page, offset, size, flags);
+}
+
int tls_sw_sendpage(struct sock *sk, struct page *page,
int offset, size_t size, int flags)
{