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authorJakub Kicinski <jakub.kicinski@netronome.com>2019-11-22 16:27:24 -0800
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-11-22 16:27:24 -0800
commita9f852e92e40992c4ff09ac3940f7725e016317a (patch)
treee6c40313de08cfb69b806a44dd777432d2b9ef29 /net/ipv4
parentnet: dsa: ocelot: fix "should it be static?" warnings (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff)
downloadlinux-dev-a9f852e92e40992c4ff09ac3940f7725e016317a.tar.xz
linux-dev-a9f852e92e40992c4ff09ac3940f7725e016317a.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in drivers/s390/net/qeth_l2_main.c, kept the lock from commit c8183f548902 ("s390/qeth: fix potential deadlock on workqueue flush"), removed the code which was removed by commit 9897d583b015 ("s390/qeth: consolidate some duplicated HW cmd code"). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/sysctl_net_ipv4.c2
-rw-r--r--net/ipv4/udp.c27
2 files changed, 23 insertions, 6 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index c9eaf924df63..fcb2cd167f64 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -1041,7 +1041,7 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_fib_multipath_hash_policy,
.extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .extra2 = &two,
},
#endif
{
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index da805ee7558b..4da5758cc718 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1297,6 +1297,27 @@ out:
#define UDP_SKB_IS_STATELESS 0x80000000
+/* all head states (dst, sk, nf conntrack) except skb extensions are
+ * cleared by udp_rcv().
+ *
+ * We need to preserve secpath, if present, to eventually process
+ * IP_CMSG_PASSSEC at recvmsg() time.
+ *
+ * Other extensions can be cleared.
+ */
+static bool udp_try_make_stateless(struct sk_buff *skb)
+{
+ if (!skb_has_extensions(skb))
+ return true;
+
+ if (!secpath_exists(skb)) {
+ skb_ext_reset(skb);
+ return true;
+ }
+
+ return false;
+}
+
static void udp_set_dev_scratch(struct sk_buff *skb)
{
struct udp_dev_scratch *scratch = udp_skb_scratch(skb);
@@ -1308,11 +1329,7 @@ static void udp_set_dev_scratch(struct sk_buff *skb)
scratch->csum_unnecessary = !!skb_csum_unnecessary(skb);
scratch->is_linear = !skb_is_nonlinear(skb);
#endif
- /* all head states execept sp (dst, sk, nf) are always cleared by
- * udp_rcv() and we need to preserve secpath, if present, to eventually
- * process IP_CMSG_PASSSEC at recvmsg() time
- */
- if (likely(!skb_sec_path(skb)))
+ if (udp_try_make_stateless(skb))
scratch->_tsize_state |= UDP_SKB_IS_STATELESS;
}