diff options
| author | John Crispin <john@phrozen.org> | 2016-12-25 20:11:34 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-08-05 08:46:36 +0200 |
| commit | 74d00a8c3849c1340efd713eb94b786e304c201f (patch) | |
| tree | de481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/backport-4.9/023-2-smsc75xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch | |
| parent | de350550ef648d9728351b986b0516fa29465c45 (diff) | |
| download | upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.gz upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.bz2 upstream-74d00a8c3849c1340efd713eb94b786e304c201f.zip | |
kernel: split patches folder up into backport, pending and hack folders
* 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* drop 661-fq_codel_keep_dropped_stats.patch - outdated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>
Diffstat (limited to 'target/linux/generic/backport-4.9/023-2-smsc75xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch')
| -rw-r--r-- | target/linux/generic/backport-4.9/023-2-smsc75xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.9/023-2-smsc75xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch b/target/linux/generic/backport-4.9/023-2-smsc75xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch new file mode 100644 index 0000000000..99d98e101c --- /dev/null +++ b/target/linux/generic/backport-4.9/023-2-smsc75xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch @@ -0,0 +1,36 @@ +From b7c6d2675899cfff0180412c63fc9cbd5bacdb4d Mon Sep 17 00:00:00 2001 +From: Eric Dumazet <edumazet@google.com> +Date: Wed, 19 Apr 2017 09:59:21 -0700 +Subject: [PATCH] smsc75xx: 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: d0cad871703b ("smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter 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/smsc75xx.c | 8 ++------ + 1 file changed, 2 insertions(+), 6 deletions(-) + +--- a/drivers/net/usb/smsc75xx.c ++++ b/drivers/net/usb/smsc75xx.c +@@ -2205,13 +2205,9 @@ static struct sk_buff *smsc75xx_tx_fixup + { + u32 tx_cmd_a, tx_cmd_b; + +- if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { +- struct sk_buff *skb2 = +- skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); ++ if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) { + dev_kfree_skb_any(skb); +- skb = skb2; +- if (!skb) +- return NULL; ++ return NULL; + } + + tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; |