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Revert "ipv4: keep skb->dst around in presence of IP options" 

ip_options_echo() does not use anymore the skb->dst and don't
need to keep the dst around for options's sake only.
This reverts commit 34b2cef20f.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni 2017-08-03 18:07:07 +02:00 committed by David S. Miller
parent 91ed1e666a
commit 61a1030bad
1 changed files with 1 additions and 8 deletions
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7
net/ipv4/ip_sockglue.c
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@ -1228,13 +1228,6 @@ void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb)
pktinfo->ipi_ifindex = 0; pktinfo->ipi_ifindex = 0;
pktinfo->ipi_spec_dst.s_addr = 0; pktinfo->ipi_spec_dst.s_addr = 0;
} }
/* We need to keep the dst for __ip_options_echo()
* We could restrict the test to opt.ts_needtime || opt.srr,
* but the following is good enough as IP options are not often used.
*/
if (unlikely(IPCB(skb)->opt.optlen))
skb_dst_force(skb);
else
skb_dst_drop(skb); skb_dst_drop(skb);
} }