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gtp: update rx_length_errors for abnormally short packets

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Based on work by Pravin Shelar.

Update appropriate stats when packet transmission isn't possible.

Signed-off-by: Jonas Bonn <jonas@norrbonn.se>
Acked-by: Harald Welte <laforge@gnumonks.org>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jonas Bonn 2021-02-03 08:08:05 +01:00 committed by Jakub Kicinski
parent 29f53b5c00
commit 9716178a3a
1 changed files with 8 additions and 2 deletions
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10
drivers/net/gtp.c
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@ -189,8 +189,10 @@ static int gtp_rx(struct pdp_ctx *pctx, struct sk_buff *skb,
/* Get rid of the GTP + UDP headers. */
if (iptunnel_pull_header(skb, hdrlen, skb->protocol,
!net_eq(sock_net(pctx->sk), dev_net(pctx->dev))))
return -1;
!net_eq(sock_net(pctx->sk), dev_net(pctx->dev)))) {
pctx->dev->stats.rx_length_errors++;
goto err;
}
netdev_dbg(pctx->dev, "forwarding packet from GGSN to uplink\n");
@ -206,6 +208,10 @@ static int gtp_rx(struct pdp_ctx *pctx, struct sk_buff *skb,
netif_rx(skb);
return 0;
err:
pctx->dev->stats.rx_dropped++;
return -1;
}
/* 1 means pass up to the stack, -1 means drop and 0 means decapsulated. */