diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-05-28 07:12:33 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-28 11:11:46 -0700 |
| commit | 18d5ad62327576cbb1e5b9938a59d63ac0c15832 (patch) | |
| tree | bbe7e26b179b2198e8dcce03c59554851e180b87 /net/ipv6 | |
| parent | fce934949c0f0003c1777fbf8c0706ba82a8cf7e (diff) | |
| download | linux-18d5ad62327576cbb1e5b9938a59d63ac0c15832.tar.bz2 | |
ipv6: add ip6_sock_set_addr_preferences
Add a helper to directly set the IPV6_ADD_PREFERENCES sockopt from kernel
space without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 59 |
1 files changed, 1 insertions, 58 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index e10258c2210e..adbfed6adf11 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -845,67 +845,10 @@ done: break; case IPV6_ADDR_PREFERENCES: - { - unsigned int pref = 0; - unsigned int prefmask = ~0; - if (optlen < sizeof(int)) goto e_inval; - - retv = -EINVAL; - - /* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */ - switch (val & (IPV6_PREFER_SRC_PUBLIC| - IPV6_PREFER_SRC_TMP| - IPV6_PREFER_SRC_PUBTMP_DEFAULT)) { - case IPV6_PREFER_SRC_PUBLIC: - pref |= IPV6_PREFER_SRC_PUBLIC; - break; - case IPV6_PREFER_SRC_TMP: - pref |= IPV6_PREFER_SRC_TMP; - break; - case IPV6_PREFER_SRC_PUBTMP_DEFAULT: - break; - case 0: - goto pref_skip_pubtmp; - default: - goto e_inval; - } - - prefmask &= ~(IPV6_PREFER_SRC_PUBLIC| - IPV6_PREFER_SRC_TMP); -pref_skip_pubtmp: - - /* check HOME/COA conflicts */ - switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) { - case IPV6_PREFER_SRC_HOME: - break; - case IPV6_PREFER_SRC_COA: - pref |= IPV6_PREFER_SRC_COA; - case 0: - goto pref_skip_coa; - default: - goto e_inval; - } - - prefmask &= ~IPV6_PREFER_SRC_COA; -pref_skip_coa: - - /* check CGA/NONCGA conflicts */ - switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) { - case IPV6_PREFER_SRC_CGA: - case IPV6_PREFER_SRC_NONCGA: - case 0: - break; - default: - goto e_inval; - } - - np->srcprefs = (np->srcprefs & prefmask) | pref; - retv = 0; - + retv = __ip6_sock_set_addr_preferences(sk, val); break; - } case IPV6_MINHOPCOUNT: if (optlen < sizeof(int)) goto e_inval; |