tuna2134/etherip-kmod
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fix

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tuna2134
2026-07-11 12:14:36 +09:00
parent 8bd7e23a2e
commit f305045a0b
16 changed files with 3999 additions and 0 deletions
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15
etherip6.c
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@@ -15,6 +15,7 @@
#include <linux/rculist.h>
#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
#include <linux/tcp.h>
#include <net/ip.h>
#include <net/ip6_route.h>
#include <net/ipv6.h>
@@ -157,8 +158,22 @@ static netdev_tx_t etherip6_xmit(struct sk_buff *skb, struct net_device *dev)
int headroom;
int err;
struct sk_buff *segs, *next;
unsigned int gso_limit;
if (skb_is_gso(skb)) {
/*
* GSO is performed before EtherIP/IPv6 encapsulation. Limit the
* TCP payload according to the configured inner MTU; this preserves
* both 1500-byte and jumbo-frame tunnel configurations.
*/
gso_limit = max_t(unsigned int, dev->mtu,
ETH_HLEN + ETHERIP6_HLEN + sizeof(struct ipv6hdr) +
sizeof(struct tcphdr)) - ETH_HLEN - ETHERIP6_HLEN -
(skb->protocol == htons(ETH_P_IPV6) ?
sizeof(struct ipv6hdr) : sizeof(struct iphdr)) -
sizeof(struct tcphdr);
if (skb_shinfo(skb)->gso_size > gso_limit)
skb_shinfo(skb)->gso_size = gso_limit;
segs = skb_gso_segment(skb, 0);
if (IS_ERR(segs))
goto tx_error;