74d00a8c38
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
From a9e840a2081ed28c2b7caa6a9a0041c950b3c37d Mon Sep 17 00:00:00 2001
|
|
From: Eric Dumazet <edumazet@google.com>
|
|
Date: Wed, 19 Apr 2017 09:59:22 -0700
|
|
Subject: [PATCH] cx82310_eth: use skb_cow_head() to deal with cloned skbs
|
|
|
|
We need to ensure there is enough headroom to push extra header,
|
|
but we also need to check if we are allowed to change headers.
|
|
|
|
skb_cow_head() is the proper helper to deal with this.
|
|
|
|
Fixes: cc28a20e77b2 ("introduce cx82310_eth: Conexant CX82310-based ADSL router USB ethernet driver")
|
|
Signed-off-by: Eric Dumazet <edumazet@google.com>
|
|
Cc: James Hughes <james.hughes@raspberrypi.org>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
drivers/net/usb/cx82310_eth.c | 7 ++-----
|
|
1 file changed, 2 insertions(+), 5 deletions(-)
|
|
|
|
--- a/drivers/net/usb/cx82310_eth.c
|
|
+++ b/drivers/net/usb/cx82310_eth.c
|
|
@@ -293,12 +293,9 @@ static struct sk_buff *cx82310_tx_fixup(
|
|
{
|
|
int len = skb->len;
|
|
|
|
- if (skb_headroom(skb) < 2) {
|
|
- struct sk_buff *skb2 = skb_copy_expand(skb, 2, 0, flags);
|
|
+ if (skb_cow_head(skb, 2)) {
|
|
dev_kfree_skb_any(skb);
|
|
- skb = skb2;
|
|
- if (!skb)
|
|
- return NULL;
|
|
+ return NULL;
|
|
}
|
|
skb_push(skb, 2);
|
|
|