Commit 58899918 authored by Pravin B Shelar's avatar Pravin B Shelar

datapath: test for netlink_set_err returning void

In v2.6.33 netlink_set_err returns void. However, 1a50307ba182 ("netlink:
fix NETLINK_RECV_NO_ENOBUFS in netlink_set_err()") was backported and
included in v2.6.33.2 and in that and subsequent v2.6.33 stable releases
netlink_set_err returns an int.

It seems plausible that there are other backports floating around. So check
for netlink_set_err returning void rather than including compatibility code
based on the version of the kernel.
Signed-off-by: default avatarSimon Horman <>
Acked-by: default avatarPravin B Shelar <>
parent 5b7120e8
......@@ -426,6 +426,8 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
......@@ -67,7 +67,7 @@ static inline int rpl_genl_unregister_family(struct genl_family *family)
static inline int genl_set_err(struct genl_family *family, struct net *net,
u32 portid, u32 group, int code)
netlink_set_err(net->genl_sock, portid, group, code);
return 0;
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