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Date: Tue, 1 Aug 2017 08:38:42 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: netdev@...r.kernel.org
Cc: Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH iproute2 v2] ip: change flag names to an array
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@...workplumber.org>
---
v2 - use name/value table rather than assuming order
handle negative masks "-deprecated"
ip/ipaddress.c | 184 ++++++++++++++++++++++++++++-----------------------------
1 file changed, 89 insertions(+), 95 deletions(-)
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index cf8ef8186f52..4d37c5e04507 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -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;
--
2.11.0
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