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ip: change flag names to an array

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For the most of the address flags, use a table of values rather
than open coding every value.  This allows for easier inevitable
expansion of flags.

This also fixes the missing stable-privacy flag.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2017-07-07 08:37:19 -07:00
parent c369dc803b
commit f73ac674d0
1 changed files with 89 additions and 95 deletions
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184
ip/ipaddress.c
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@ -1012,14 +1012,95 @@ static unsigned int get_ifa_flags(struct ifaddrmsg *ifa,
ifa->ifa_flags;
}
/* Mapping from argument to address flag mask */
struct {
const char *name;
unsigned long value;
} ifa_flag_names[] = {
{ "secondary", IFA_F_SECONDARY },
{ "temporary", IFA_F_SECONDARY },
{ "nodad", IFA_F_NODAD },
{ "optimistic", IFA_F_OPTIMISTIC },
{ "dadfailed", IFA_F_DADFAILED },
{ "home", IFA_F_HOMEADDRESS },
{ "deprecated", IFA_F_DEPRECATED },
{ "tentative", IFA_F_TENTATIVE },
{ "permanent", IFA_F_PERMANENT },
{ "mngtmpaddr", IFA_F_MANAGETEMPADDR },
{ "noprefixroute", IFA_F_NOPREFIXROUTE },
{ "autojoin", IFA_F_MCAUTOJOIN },
{ "stable-privacy", IFA_F_STABLE_PRIVACY },
};
static void print_ifa_flags(FILE *fp, const struct ifaddrmsg *ifa,
unsigned int flags)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(ifa_flag_names); i++) {
unsigned long mask = ifa_flag_names[i].value;
if (mask == IFA_F_PERMANENT) {
if (!(flags & mask))
fprintf(fp, "dynamic ");
} else if (flags & mask) {
if (mask == IFA_F_SECONDARY &&
ifa->ifa_family == AF_INET6)
fprintf(fp, "temporary ");
else
fprintf(fp, "%s ", ifa_flag_names[i].name);
}
flags &= ~mask;
}
if (flags)
fprintf(fp, "flags %02x ", flags);
}
static int get_filter(const char *arg)
{
unsigned int i;
/* Special cases */
if (strcmp(arg, "dynamic") == 0) {
filter.flags &= ~IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(arg, "primary") == 0) {
filter.flags &= ~IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (*arg == '-') {
for (i = 0; i < ARRAY_SIZE(ifa_flag_names); i++) {
if (strcmp(arg + 1, ifa_flag_names[i].name))
continue;
filter.flags &= ifa_flag_names[i].value;
filter.flagmask |= ifa_flag_names[i].value;
return 0;
}
return -1;
} else {
for (i = 0; i < ARRAY_SIZE(ifa_flag_names); i++) {
if (strcmp(arg, ifa_flag_names[i].name))
continue;
filter.flags |= ifa_flag_names[i].value;
filter.flagmask |= ifa_flag_names[i].value;
return 0;
}
return -1;
}
return 0;
}
int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
FILE *fp = arg;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
int len = n->nlmsg_len;
int deprecated = 0;
/* Use local copy of ifa_flags to not interfere with filtering code */
unsigned int ifa_flags;
struct rtattr *rta_tb[IFA_MAX+1];
@ -1144,52 +1225,9 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
rta_tb[IFA_ANYCAST]));
}
fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
if (ifa_flags & IFA_F_SECONDARY) {
ifa_flags &= ~IFA_F_SECONDARY;
if (ifa->ifa_family == AF_INET6)
fprintf(fp, "temporary ");
else
fprintf(fp, "secondary ");
}
if (ifa_flags & IFA_F_TENTATIVE) {
ifa_flags &= ~IFA_F_TENTATIVE;
fprintf(fp, "tentative ");
}
if (ifa_flags & IFA_F_DEPRECATED) {
ifa_flags &= ~IFA_F_DEPRECATED;
deprecated = 1;
fprintf(fp, "deprecated ");
}
if (ifa_flags & IFA_F_HOMEADDRESS) {
ifa_flags &= ~IFA_F_HOMEADDRESS;
fprintf(fp, "home ");
}
if (ifa_flags & IFA_F_NODAD) {
ifa_flags &= ~IFA_F_NODAD;
fprintf(fp, "nodad ");
}
if (ifa_flags & IFA_F_MANAGETEMPADDR) {
ifa_flags &= ~IFA_F_MANAGETEMPADDR;
fprintf(fp, "mngtmpaddr ");
}
if (ifa_flags & IFA_F_NOPREFIXROUTE) {
ifa_flags &= ~IFA_F_NOPREFIXROUTE;
fprintf(fp, "noprefixroute ");
}
if (ifa_flags & IFA_F_MCAUTOJOIN) {
ifa_flags &= ~IFA_F_MCAUTOJOIN;
fprintf(fp, "autojoin ");
}
if (!(ifa_flags & IFA_F_PERMANENT))
fprintf(fp, "dynamic ");
else
ifa_flags &= ~IFA_F_PERMANENT;
if (ifa_flags & IFA_F_DADFAILED) {
ifa_flags &= ~IFA_F_DADFAILED;
fprintf(fp, "dadfailed ");
}
if (ifa_flags)
fprintf(fp, "flags %02x ", ifa_flags);
print_ifa_flags(fp, ifa, ifa_flags);
if (rta_tb[IFA_LABEL])
fprintf(fp, "%s", rta_getattr_str(rta_tb[IFA_LABEL]));
if (rta_tb[IFA_CACHEINFO]) {
@ -1205,7 +1243,7 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
if (ci->ifa_prefered == INFINITY_LIFE_TIME)
fprintf(fp, "forever");
else {
if (deprecated)
if (ifa_flags & IFA_F_DEPRECATED)
fprintf(fp, "%dsec", ci->ifa_prefered);
else
fprintf(fp, "%usec", ci->ifa_prefered);
@ -1608,52 +1646,8 @@ static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
filter.scope = scope;
} else if (strcmp(*argv, "up") == 0) {
filter.up = 1;
} else if (strcmp(*argv, "dynamic") == 0) {
filter.flags &= ~IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(*argv, "permanent") == 0) {
filter.flags |= IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(*argv, "secondary") == 0 ||
strcmp(*argv, "temporary") == 0) {
filter.flags |= IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (strcmp(*argv, "primary") == 0) {
filter.flags &= ~IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (strcmp(*argv, "tentative") == 0) {
filter.flags |= IFA_F_TENTATIVE;
filter.flagmask |= IFA_F_TENTATIVE;
} else if (strcmp(*argv, "-tentative") == 0) {
filter.flags &= ~IFA_F_TENTATIVE;
filter.flagmask |= IFA_F_TENTATIVE;
} else if (strcmp(*argv, "deprecated") == 0) {
filter.flags |= IFA_F_DEPRECATED;
filter.flagmask |= IFA_F_DEPRECATED;
} else if (strcmp(*argv, "-deprecated") == 0) {
filter.flags &= ~IFA_F_DEPRECATED;
filter.flagmask |= IFA_F_DEPRECATED;
} else if (strcmp(*argv, "home") == 0) {
filter.flags |= IFA_F_HOMEADDRESS;
filter.flagmask |= IFA_F_HOMEADDRESS;
} else if (strcmp(*argv, "nodad") == 0) {
filter.flags |= IFA_F_NODAD;
filter.flagmask |= IFA_F_NODAD;
} else if (strcmp(*argv, "mngtmpaddr") == 0) {
filter.flags |= IFA_F_MANAGETEMPADDR;
filter.flagmask |= IFA_F_MANAGETEMPADDR;
} else if (strcmp(*argv, "noprefixroute") == 0) {
filter.flags |= IFA_F_NOPREFIXROUTE;
filter.flagmask |= IFA_F_NOPREFIXROUTE;
} else if (strcmp(*argv, "autojoin") == 0) {
filter.flags |= IFA_F_MCAUTOJOIN;
filter.flagmask |= IFA_F_MCAUTOJOIN;
} else if (strcmp(*argv, "dadfailed") == 0) {
filter.flags |= IFA_F_DADFAILED;
filter.flagmask |= IFA_F_DADFAILED;
} else if (strcmp(*argv, "-dadfailed") == 0) {
filter.flags &= ~IFA_F_DADFAILED;
filter.flagmask |= IFA_F_DADFAILED;
} else if (get_filter(*argv) == 0) {
} else if (strcmp(*argv, "label") == 0) {
NEXT_ARG();
filter.label = *argv;