[PATCH] xdp: fix xsk_generic_xmit errno

[Li RongQing]

propagate sock_alloc_send_skb error code, not set it
to EAGAIN unconditionally, when fail to allocate skb,
which maybe causes that user space unnecessary loops

Fixes: 35fcde7f8deb "(xsk: support for Tx)"
Signed-off-by: Li RongQing <lirongq...@baidu.com>
---
 net/xdp/xsk.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index b6c0f08bd80d..1ba3ea262c15 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -353,7 +353,6 @@ static int xsk_generic_xmit(struct sock *sk)
                len = desc.len;
                skb = sock_alloc_send_skb(sk, len, 1, &err);
                if (unlikely(!skb)) {
-                       err = -EAGAIN;
                        goto out;
                }
 
-- 
2.16.2