netdev - [PATCH bpf] bpf: Reset data_meta before running programs attached to devmap entry

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Message-Id: <20200608151723.9539-1-dsahern@kernel.org>
Date:   Mon,  8 Jun 2020 09:17:23 -0600
From:   David Ahern <dsahern@...nel.org>
To:     netdev@...r.kernel.org
Cc:     bpf@...r.kernel.org, daniel@...earbox.net, ast@...nel.org,
        David Ahern <dsahern@...nel.org>
Subject: [PATCH bpf] bpf: Reset data_meta before running programs attached to devmap entry

This is a new context that does not handle metadata at the moment, so
mark data_meta invalid.

Fixes: fbee97feed9b ("bpf: Add support to attach bpf program to a devmap entry")
Signed-off-by: David Ahern <dsahern@...nel.org>
---
 kernel/bpf/devmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 854b09beb16b..bfdff2faf5cb 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -479,6 +479,7 @@ static struct xdp_buff *dev_map_run_prog(struct net_device *dev,
 	struct xdp_txq_info txq = { .dev = dev };
 	u32 act;
 
+	xdp_set_data_meta_invalid(xdp);
 	xdp->txq = &txq;
 
 	act = bpf_prog_run_xdp(xdp_prog, xdp);
-- 
2.17.1