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Date: Fri, 29 Jun 2018 09:48:19 +0200
From: Magnus Karlsson <magnus.karlsson@...el.com>
To: magnus.karlsson@...el.com, bjorn.topel@...el.com, ast@...com,
daniel@...earbox.net, netdev@...r.kernel.org,
eric.dumazet@...il.com, liu.song.a23@...il.com
Cc: qi.z.zhang@...el.com, pavel@...tnetmon.com
Subject: [PATCH bpf v2 3/4] samples/bpf: deal with EBUSY return code from sendmsg in xdpsock sample
Sendmsg in the SKB path of AF_XDP can now return EBUSY when a packet
was discarded and completed by the driver. Just ignore this message
in the sample application.
Fixes: b4b8faa1ded7 ("samples/bpf: sample application and documentation for AF_XDP sockets")
Signed-off-by: Magnus Karlsson <magnus.karlsson@...el.com>
Reported-by: Pavel Odintsov <pavel@...tnetmon.com>
---
samples/bpf/xdpsock_user.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index d69c8d78d3fd..5904b1543831 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -729,7 +729,7 @@ static void kick_tx(int fd)
int ret;
ret = sendto(fd, NULL, 0, MSG_DONTWAIT, NULL, 0);
- if (ret >= 0 || errno == ENOBUFS || errno == EAGAIN)
+ if (ret >= 0 || errno == ENOBUFS || errno == EAGAIN || errno == EBUSY)
return;
lassert(0);
}
--
2.7.4
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