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linux-user: add target to host netlink conversions

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Added conversions for:
- IFLA_MTU
- IFLA_TXQLEN
- IFLA_AF_SPEC AF_INET6 IFLA_INET6_ADDR_GEN_MODE
These relate to the libnl functions rtnl_link_set_mtu,
rtnl_link_set_txqlen, and rtnl_link_inet6_set_addr_gen_mode.

Signed-off-by: Mathis Marion <mathis.marion@silabs.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20230220085822.626798-4-Mathis.Marion@silabs.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Mathis Marion 2023-02-20 09:58:21 +01:00 committed by Laurent Vivier
parent d759a62b12
commit fa2229dbf8
1 changed files with 62 additions and 0 deletions
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62
linux-user/fd-trans.c
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@ -1284,6 +1284,49 @@ static inline abi_long host_to_target_nlmsg_route(struct nlmsghdr *nlh,
return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_route);
}
static abi_long target_to_host_for_each_nlattr(struct nlattr *nlattr,
size_t len,
abi_long (*target_to_host_nlattr)
(struct nlattr *))
{
unsigned short aligned_nla_len;
abi_long ret;
while (len > sizeof(struct nlattr)) {
if (tswap16(nlattr->nla_len) < sizeof(struct rtattr) ||
tswap16(nlattr->nla_len) > len) {
break;
}
nlattr->nla_len = tswap16(nlattr->nla_len);
nlattr->nla_type = tswap16(nlattr->nla_type);
ret = target_to_host_nlattr(nlattr);
if (ret < 0) {
return ret;
}
aligned_nla_len = NLA_ALIGN(nlattr->nla_len);
if (aligned_nla_len >= len) {
break;
}
len -= aligned_nla_len;
nlattr = (struct nlattr *)(((char *)nlattr) + aligned_nla_len);
}
return 0;
}
static abi_long target_to_host_data_inet6_nlattr(struct nlattr *nlattr)
{
switch (nlattr->nla_type) {
/* uint8_t */
case QEMU_IFLA_INET6_ADDR_GEN_MODE:
break;
default:
qemu_log_mask(LOG_UNIMP, "Unknown target AF_INET6 type: %d\n",
nlattr->nla_type);
}
return 0;
}
static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr,
size_t len,
abi_long (*target_to_host_rtattr)
@ -1314,16 +1357,35 @@ static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr,
return 0;
}
static abi_long target_to_host_data_spec_nlattr(struct nlattr *nlattr)
{
switch (nlattr->nla_type) {
case AF_INET6:
return target_to_host_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
target_to_host_data_inet6_nlattr);
default:
qemu_log_mask(LOG_UNIMP, "Unknown target AF_SPEC type: %d\n",
nlattr->nla_type);
break;
}
return 0;
}
static abi_long target_to_host_data_link_rtattr(struct rtattr *rtattr)
{
uint32_t *u32;
switch (rtattr->rta_type) {
/* uint32_t */
case QEMU_IFLA_MTU:
case QEMU_IFLA_TXQLEN:
case QEMU_IFLA_EXT_MASK:
u32 = RTA_DATA(rtattr);
*u32 = tswap32(*u32);
break;
case QEMU_IFLA_AF_SPEC:
return target_to_host_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
target_to_host_data_spec_nlattr);
default:
qemu_log_mask(LOG_UNIMP, "Unknown target QEMU_IFLA type: %d\n",
rtattr->rta_type);