| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.4 264/266] xdp: Fix xsk_generic_xmit errno | Date | Wed, 17 Jun 2020 21:16:29 -0400 |
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From: Li RongQing <lirongqing@baidu.com>
[ Upstream commit aa2cad0600ed2ca6a0ab39948d4db1666b6c962b ]
Propagate sock_alloc_send_skb error code, not set it to EAGAIN unconditionally, when fail to allocate skb, which might cause that user space unnecessary loops.
Fixes: 35fcde7f8deb ("xsk: support for Tx") Signed-off-by: Li RongQing <lirongqing@baidu.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Björn Töpel <bjorn.topel@intel.com> Link: https://lore.kernel.org/bpf/1591852266-24017-1-git-send-email-lirongqing@baidu.com Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/xdp/xsk.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 7181a30666b4..f9eb5efb237c 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -362,10 +362,8 @@ 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; + if (unlikely(!skb)) goto out; - } skb_put(skb, len); addr = desc.addr; -- 2.25.1
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