[DECNET]: Tidy send side socket SKB allocation.

Patch from Steve Whitehouse which I've vetted and tested:

"This patch is really intended has a move towards fixing the
sendmsg/recvmsg functions in various ways so that we will finally
have working nagle. Also reduces code duplication."

Signed-off-by: Patrick Caulfield <patrick@tykepenguin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 63 deletions

diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index e0bebf4bbcad..53633d352868 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -137,69 +137,6 @@ struct sk_buff *dn_alloc_skb(struct sock *sk, int size, int pri)
 }
 
 /*
- * Wrapper for the above, for allocs of data skbs. We try and get the
- * whole size thats been asked for (plus 11 bytes of header). If this
- * fails, then we try for any size over 16 bytes for SOCK_STREAMS.
- */
-struct sk_buff *dn_alloc_send_skb(struct sock *sk, size_t *size, int noblock, long timeo, int *err)
-{
-        int space;
-        int len;
-        struct sk_buff *skb = NULL;
-
-        *err = 0;
-
-        while(skb == NULL) {
-                if (signal_pending(current)) {
-                        *err = sock_intr_errno(timeo);
-                        break;
-                }
-
-                if (sk->sk_shutdown & SEND_SHUTDOWN) {
-                        *err = EINVAL;
-                        break;
-                }
-
-                if (sk->sk_err)
-                        break;
-
-                len = *size + 11;
-                space = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
-
-                if (space < len) {
-                        if ((sk->sk_socket->type == SOCK_STREAM) &&
-                            (space >= (16 + 11)))
-                                len = space;
-                }
-
-                if (space < len) {
-                        set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
-                        if (noblock) {
-                                *err = EWOULDBLOCK;
-                                break;
-                        }
-
-                        clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
-                        SOCK_SLEEP_PRE(sk)
-
-                        if ((sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc)) <
-                            len)
-                                schedule();
-
-                        SOCK_SLEEP_POST(sk)
-                        continue;
-                }
-
-                if ((skb = dn_alloc_skb(sk, len, sk->sk_allocation)) == NULL)
-                        continue;
-
-                *size = len - 11;
-        }
-
-        return skb;
-}
-
-/*
  * Calculate persist timer based upon the smoothed round
  * trip time and the variance. Backoff according to the
  * nsp_backoff[] array.