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| author | Nikolay Aleksandrov <nikolay@cumulusnetworks.com> | 2015-08-28 15:44:25 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-28 16:24:54 -0700 |
| commit | c9fd56b34efd06a031cbc918d288f09e38173ff9 (patch) | |
| tree | b15af8ee72efff9c70768de7b4c764b691c1a47f | |
| parent | 55cc051915fd066f46c56ebd60ba486ad11e0e29 (diff) | |
| download | lwn-c9fd56b34efd06a031cbc918d288f09e38173ff9.tar.gz lwn-c9fd56b34efd06a031cbc918d288f09e38173ff9.zip | |
netpoll: warn on netpoll_send_udp users who haven't disabled irqs
Make sure we catch future netpoll_send_udp users who use it without
disabling irqs and also as a hint for poll_controller users.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/netpoll.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index c126a878c47c..6aa3db8dfc3b 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -380,6 +380,8 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len) static atomic_t ip_ident; struct ipv6hdr *ip6h; + WARN_ON_ONCE(!irqs_disabled()); + udp_len = len + sizeof(*udph); if (np->ipv6) ip_len = udp_len + sizeof(*ip6h); |