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socket-util: Use correct address family in set_dscp(), instead of guessing.

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The set_dscp() function, until now, tried to set the DSCP as IPv4 and as
IPv6. This worked OK on Linux, where an ENOPROTOOPT error made it really
clear which one was wrong, but FreeBSD uses EINVAL instead, which has
multiple meanings and which it therefore seems somewhat risky to ignore.
Instead, this commit just tries to set the correct address family's DSCP
option.

Tested by Alex Wang on FreeBSD 9.3.

Reported-by: Atanu Ghosh <atanu@acm.org>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Co-authored-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
Tested-by: Alex Wang <alexw@nicira.com>
This commit is contained in:
Ben Pfaff
2015-02-20 11:30:50 -08:00
parent c2e3cbaf7b
commit afc1d53674
3 changed files with 37 additions and 40 deletions
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4
lib/socket-util.h
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -30,7 +30,7 @@
int set_nonblocking(int fd);
void xset_nonblocking(int fd);
void setsockopt_tcp_nodelay(int fd);
int set_dscp(int fd, uint8_t dscp);
int set_dscp(int fd, int family, uint8_t dscp);
int lookup_ip(const char *host_name, struct in_addr *address);
int lookup_ipv6(const char *host_name, struct in6_addr *address);