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Diffstat (limited to 'net/ipv4/ip_output.c')
-rw-r--r--net/ipv4/ip_output.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 7649d77..439d2a3 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -487,7 +487,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
* LATER: this step can be merged to real generation of fragments,
* we can switch to copy when see the first bad fragment.
*/
- if (skb_has_frags(skb)) {
+ if (skb_has_frag_list(skb)) {
struct sk_buff *frag, *frag2;
int first_len = skb_pagelen(skb);
@@ -844,10 +844,9 @@ int ip_append_data(struct sock *sk,
inet->cork.length = 0;
sk->sk_sndmsg_page = NULL;
sk->sk_sndmsg_off = 0;
- if ((exthdrlen = rt->dst.header_len) != 0) {
- length += exthdrlen;
- transhdrlen += exthdrlen;
- }
+ exthdrlen = rt->dst.header_len;
+ length += exthdrlen;
+ transhdrlen += exthdrlen;
} else {
rt = (struct rtable *)inet->cork.dst;
if (inet->cork.flags & IPCORK_OPT)
@@ -934,16 +933,19 @@ alloc_new_skb:
!(rt->dst.dev->features&NETIF_F_SG))
alloclen = mtu;
else
- alloclen = datalen + fragheaderlen;
+ alloclen = fraglen;
/* The last fragment gets additional space at tail.
* Note, with MSG_MORE we overallocate on fragments,
* because we have no idea what fragment will be
* the last.
*/
- if (datalen == length + fraggap)
+ if (datalen == length + fraggap) {
alloclen += rt->dst.trailer_len;
-
+ /* make sure mtu is not reached */
+ if (datalen > mtu - fragheaderlen - rt->dst.trailer_len)
+ datalen -= ALIGN(rt->dst.trailer_len, 8);
+ }
if (transhdrlen) {
skb = sock_alloc_send_skb(sk,
alloclen + hh_len + 15,
@@ -960,7 +962,7 @@ alloc_new_skb:
else
/* only the initial fragment is
time stamped */
- ipc->shtx.flags = 0;
+ ipc->tx_flags = 0;
}
if (skb == NULL)
goto error;
@@ -971,7 +973,7 @@ alloc_new_skb:
skb->ip_summed = csummode;
skb->csum = 0;
skb_reserve(skb, hh_len);
- *skb_tx(skb) = ipc->shtx;
+ skb_shinfo(skb)->tx_flags = ipc->tx_flags;
/*
* Find where to start putting bytes.
@@ -1391,7 +1393,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
- ipc.shtx.flags = 0;
+ ipc.tx_flags = 0;
if (replyopts.opt.optlen) {
ipc.opt = &replyopts.opt;
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