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| author | Pravin B Shelar <pshelar@nicira.com> | 2013-03-24 17:36:29 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-25 12:30:25 -0400 |
| commit | 25c7704d8bdcf6746dab4397953df51759924b37 (patch) | |
| tree | 827ce8d9cf89b2a19c248ad3ea1ec0763760ff9d | |
| parent | 5594c32187e4cb673d2ac815b1adb5a96d9f6254 (diff) | |
| download | linux-exynos-25c7704d8bdcf6746dab4397953df51759924b37.tar.gz linux-exynos-25c7704d8bdcf6746dab4397953df51759924b37.tar.bz2 linux-exynos-25c7704d8bdcf6746dab4397953df51759924b37.zip | |
ipv4: Fix ip-header identification for gso packets.
ip-header id needs to be incremented even if IP_DF flag is set.
This behaviour was changed in commit 490ab08127cebc25e3a26
(IP_GRE: Fix IP-Identification).
Following patch fixes it so that identification is always
incremented.
Reported-by: Cong Wang <amwang@redhat.com>
Acked-by: Cong Wang <amwang@redhat.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
| -rw-r--r-- | include/net/ipip.h | 16 | ||||
| -rw-r--r-- | net/ipv4/af_inet.c | 3 |
2 files changed, 7 insertions, 12 deletions
diff --git a/include/net/ipip.h b/include/net/ipip.h index 0c046e3bca05..483b91a10bb2 100644 --- a/include/net/ipip.h +++ b/include/net/ipip.h @@ -74,15 +74,11 @@ static inline void tunnel_ip_select_ident(struct sk_buff *skb, { struct iphdr *iph = ip_hdr(skb); - if (iph->frag_off & htons(IP_DF)) - iph->id = 0; - else { - /* Use inner packet iph-id if possible. */ - if (skb->protocol == htons(ETH_P_IP) && old_iph->id) - iph->id = old_iph->id; - else - __ip_select_ident(iph, dst, - (skb_shinfo(skb)->gso_segs ?: 1) - 1); - } + /* Use inner packet iph-id if possible. */ + if (skb->protocol == htons(ETH_P_IP) && old_iph->id) + iph->id = old_iph->id; + else + __ip_select_ident(iph, dst, + (skb_shinfo(skb)->gso_segs ?: 1) - 1); } #endif diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 9e5882caf8a7..70b2d4cf5801 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1334,8 +1334,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, iph->frag_off |= htons(IP_MF); offset += (skb->len - skb->mac_len - iph->ihl * 4); } else { - if (!(iph->frag_off & htons(IP_DF))) - iph->id = htons(id++); + iph->id = htons(id++); } iph->tot_len = htons(skb->len - skb->mac_len); iph->check = 0; |