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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
commit8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 (patch)
treea0a63398a9983667d52cbbbf4e2405b4f22b1d83 /net/ipv6/ip6_output.c
parent1be025d3cb40cd295123af2c394f7229ef9b30ca (diff)
parent8b3408f8ee994973869d8ba32c5bf482bc4ddca4 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits) dp83640: free packet queues on remove dp83640: use proper function to free transmit time stamping packets ipv6: Do not use routes from locally generated RAs |PATCH net-next] tg3: add tx_dropped counter be2net: don't create multiple RX/TX rings in multi channel mode be2net: don't create multiple TXQs in BE2 be2net: refactor VF setup/teardown code into be_vf_setup/clear() be2net: add vlan/rx-mode/flow-control config to be_setup() net_sched: cls_flow: use skb_header_pointer() ipv4: avoid useless call of the function check_peer_pmtu TCP: remove TCP_DEBUG net: Fix driver name for mdio-gpio.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces ipv4: fix ipsec forward performance regression jme: fix irq storm after suspend/resume route: fix ICMP redirect validation net: hold sock reference while processing tx timestamps tcp: md5: add more const attributes Add ethtool -g support to virtio_net ... Fix up conflicts in: - drivers/net/Kconfig: The split-up generated a trivial conflict with removal of a stale reference to Documentation/networking/net-modules.txt. Remove it from the new location instead. - fs/sysfs/dir.c: Fairly nasty conflicts with the sysfs rb-tree usage, conflicting with Eric Biederman's changes for tagged directories.
Diffstat (limited to 'net/ipv6/ip6_output.c')
-rw-r--r--net/ipv6/ip6_output.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 4c882cf4e8a..1c9bf8b5c30 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1193,6 +1193,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
struct sk_buff *skb;
unsigned int maxfraglen, fragheaderlen;
int exthdrlen;
+ int dst_exthdrlen;
int hh_len;
int mtu;
int copy;
@@ -1248,7 +1249,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
np->cork.hop_limit = hlimit;
np->cork.tclass = tclass;
mtu = np->pmtudisc == IPV6_PMTUDISC_PROBE ?
- rt->dst.dev->mtu : dst_mtu(rt->dst.path);
+ rt->dst.dev->mtu : dst_mtu(&rt->dst);
if (np->frag_size < mtu) {
if (np->frag_size)
mtu = np->frag_size;
@@ -1259,16 +1260,17 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
cork->length = 0;
sk->sk_sndmsg_page = NULL;
sk->sk_sndmsg_off = 0;
- exthdrlen = rt->dst.header_len + (opt ? opt->opt_flen : 0) -
- rt->rt6i_nfheader_len;
+ exthdrlen = (opt ? opt->opt_flen : 0) - rt->rt6i_nfheader_len;
length += exthdrlen;
transhdrlen += exthdrlen;
+ dst_exthdrlen = rt->dst.header_len;
} else {
rt = (struct rt6_info *)cork->dst;
fl6 = &inet->cork.fl.u.ip6;
opt = np->cork.opt;
transhdrlen = 0;
exthdrlen = 0;
+ dst_exthdrlen = 0;
mtu = cork->fragsize;
}
@@ -1368,6 +1370,8 @@ alloc_new_skb:
else
alloclen = datalen + fragheaderlen;
+ alloclen += dst_exthdrlen;
+
/*
* The last fragment gets additional space at tail.
* Note: we overallocate on fragments with MSG_MODE
@@ -1419,9 +1423,9 @@ alloc_new_skb:
/*
* Find where to start putting bytes
*/
- data = skb_put(skb, fraglen);
- skb_set_network_header(skb, exthdrlen);
- data += fragheaderlen;
+ data = skb_put(skb, fraglen + dst_exthdrlen);
+ skb_set_network_header(skb, exthdrlen + dst_exthdrlen);
+ data += fragheaderlen + dst_exthdrlen;
skb->transport_header = (skb->network_header +
fragheaderlen);
if (fraggap) {
@@ -1434,6 +1438,7 @@ alloc_new_skb:
pskb_trim_unique(skb_prev, maxfraglen);
}
copy = datalen - transhdrlen - fraggap;
+
if (copy < 0) {
err = -EINVAL;
kfree_skb(skb);
@@ -1448,6 +1453,7 @@ alloc_new_skb:
length -= datalen - fraggap;
transhdrlen = 0;
exthdrlen = 0;
+ dst_exthdrlen = 0;
csummode = CHECKSUM_NONE;
/*
@@ -1480,13 +1486,13 @@ alloc_new_skb:
if (page && (left = PAGE_SIZE - off) > 0) {
if (copy >= left)
copy = left;
- if (page != frag->page) {
+ if (page != skb_frag_page(frag)) {
if (i == MAX_SKB_FRAGS) {
err = -EMSGSIZE;
goto error;
}
- get_page(page);
skb_fill_page_desc(skb, i, page, sk->sk_sndmsg_off, 0);
+ skb_frag_ref(skb, i);
frag = &skb_shinfo(skb)->frags[i];
}
} else if(i < MAX_SKB_FRAGS) {
@@ -1506,12 +1512,14 @@ alloc_new_skb:
err = -EMSGSIZE;
goto error;
}
- if (getfrag(from, page_address(frag->page)+frag->page_offset+frag->size, offset, copy, skb->len, skb) < 0) {
+ if (getfrag(from,
+ skb_frag_address(frag) + skb_frag_size(frag),
+ offset, copy, skb->len, skb) < 0) {
err = -EFAULT;
goto error;
}
sk->sk_sndmsg_off += copy;
- frag->size += copy;
+ skb_frag_size_add(frag, copy);
skb->len += copy;
skb->data_len += copy;
skb->truesize += copy;