net: Split sk_no_check into sk_no_check_{rx,tx}

Define separate fields in the sock structure for configuring disabling
checksums in both TX and RX-- sk_no_check_tx and sk_no_check_rx.
The SO_NO_CHECK socket option only affects sk_no_check_tx. Also,
removed UDP_CSUM_* defines since they are no longer necessary.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 2 deletions

diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 41e4e93cb3aa..91729b807c7d 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -1353,7 +1353,7 @@ static int ipx_create(struct net *net, struct socket *sock, int protocol,
 
         sk_refcnt_debug_inc(sk);
         sock_init_data(sock, sk);
-        sk->sk_no_check = 1;            /* Checksum off by default */
+        sk->sk_no_check_tx = 1;         /* Checksum off by default */
         sock->ops = &ipx_dgram_ops;
         rc = 0;
 out:
diff --git a/net/ipx/ipx_route.c b/net/ipx/ipx_route.c
index c1f03185c5e1..67e7ad3d46b1 100644
--- a/net/ipx/ipx_route.c
+++ b/net/ipx/ipx_route.c
@@ -236,7 +236,8 @@ int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
         }
 
         /* Apply checksum. Not allowed on 802.3 links. */
-        if (sk->sk_no_check || intrfc->if_dlink_type == htons(IPX_FRAME_8023))
+        if (sk->sk_no_check_tx ||
+            intrfc->if_dlink_type == htons(IPX_FRAME_8023))
                 ipx->ipx_checksum = htons(0xFFFF);
         else
                 ipx->ipx_checksum = ipx_cksum(ipx, len + sizeof(struct ipxhdr));