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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-17 15:53:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-17 15:53:24 -0800 |
| commit | 8b80384169366b58fe49ae8356014f2f660ee934 (patch) | |
| tree | 4be60478c19179a2a188f33ae5de1be42aca9ad1 /net/ipv4/udp.c | |
| parent | b0031f227e47919797dc0e1c1990f3ef151ff0cc (diff) | |
| parent | 781069279f049508274db63bfb352e8583e5c977 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
"A quick batch of fixes, including the annoying bad lock stack problem
introduced by udp_sk_rx_dst_set() locking change:
1) Use xchg() instead of sk_dst_lock() in udp_sk_rx_dst_set(), from
Eric Dumazet.
2) qlcnic bug fixes from Himanshu Madhani and Manish Chopra.
3) Update IPSEC MAINTAINERS entry, from Steffen Klassert.
4) Administrative neigh entry changes should generate netlink
notifications the same as event generated ones. From Bob
Gilligan.
5) Netfilter SYNPROXY fixes from Patrick McHardy.
6) Netfilter nft_reject endianness fixes from Eric Leblond"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
qlcnic: Dump mailbox registers when mailbox command times out.
qlcnic: Fix mailbox processing during diagnostic test
qlcnic: Allow firmware dump collection when auto firmware recovery is disabled
qlcnic: Fix memory allocation
qlcnic: Fix TSS/RSS validation for 83xx/84xx series adapter.
qlcnic: Fix TSS/RSS ring validation logic.
qlcnic: Fix diagnostic test for all adapters.
qlcnic: Fix usage of netif_tx_{wake, stop} api during link change.
xen-netback: fix fragments error handling in checksum_setup_ip()
neigh: Netlink notification for administrative NUD state change
ipv4: improve documentation of ip_no_pmtu_disc
net: unix: allow bind to fail on mutex lock
MAINTAINERS: Update the IPsec maintainer entry
udp: ipv4: do not use sk_dst_lock from softirq context
netvsc: don't flush peers notifying work during setting mtu
can: peak_usb: fix mem leak in pcan_usb_pro_init()
can: ems_usb: fix urb leaks on failure paths
sctp: loading sctp when load sctp_probe
netfilter: nft_reject: fix endianness in dump function
netfilter: SYNPROXY target: restrict to INPUT/FORWARD
Diffstat (limited to 'net/ipv4/udp.c')
| -rw-r--r-- | net/ipv4/udp.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 62c19fdd102d..f140048334ce 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1600,20 +1600,15 @@ static void flush_stack(struct sock **stack, unsigned int count, } /* For TCP sockets, sk_rx_dst is protected by socket lock - * For UDP, we use sk_dst_lock to guard against concurrent changes. + * For UDP, we use xchg() to guard against concurrent changes. */ static void udp_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst) { struct dst_entry *old; - spin_lock(&sk->sk_dst_lock); - old = sk->sk_rx_dst; - if (likely(old != dst)) { - dst_hold(dst); - sk->sk_rx_dst = dst; - dst_release(old); - } - spin_unlock(&sk->sk_dst_lock); + dst_hold(dst); + old = xchg(&sk->sk_rx_dst, dst); + dst_release(old); } /* |