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Date: Thu, 1 Feb 2018 17:19:42 -0800
From: Stephen Hemminger <stephen@...workplumber.org>
To: dsahern@...il.com
Cc: netdev@...r.kernel.org, Stephen Hemminger <sthemmin@...rosoft.com>,
Stephen Hemminger <stephen@...workplumber.org>
Subject: [RFC iproute2-next 12/16] iproute: make flush a separate function
Minor refactoring to make function size smaller and reduce
depth of nesting.
Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
ip/iproute.c | 121 +++++++++++++++++++++++++++++++----------------------------
1 file changed, 64 insertions(+), 57 deletions(-)
diff --git a/ip/iproute.c b/ip/iproute.c
index 55b2f51e3987..650e3e8b00ee 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -1472,6 +1472,68 @@ static int save_route_prep(void)
return 0;
}
+static int iproute_flush(int do_ipv6, rtnl_filter_t filter_fn)
+{
+ time_t start = time(0);
+ char flushb[4096-512];
+ int round = 0;
+ int ret;
+
+ if (filter.cloned) {
+ if (do_ipv6 != AF_INET6) {
+ iproute_flush_cache();
+ if (show_stats)
+ printf("*** IPv4 routing cache is flushed.\n");
+ }
+ if (do_ipv6 == AF_INET)
+ return 0;
+ }
+
+ filter.flushb = flushb;
+ filter.flushp = 0;
+ filter.flushe = sizeof(flushb);
+
+ for (;;) {
+ if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
+ perror("Cannot send dump request");
+ return -2;
+ }
+ filter.flushed = 0;
+ if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
+ fprintf(stderr, "Flush terminated\n");
+ return -2;
+ }
+ if (filter.flushed == 0) {
+ if (show_stats) {
+ if (round == 0 &&
+ (!filter.cloned || do_ipv6 == AF_INET6))
+ printf("Nothing to flush.\n");
+ else
+ printf("*** Flush is complete after %d round%s ***\n",
+ round, round > 1 ? "s" : "");
+ }
+ fflush(stdout);
+ return 0;
+ }
+ round++;
+ ret = flush_update();
+ if (ret < 0)
+ return ret;
+
+ if (time(0) - start > 30) {
+ printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
+ (long)(time(0) - start), filter.flushed);
+ return -1;
+ }
+
+ if (show_stats) {
+ printf("\n*** Round %d, deleting %d entries ***\n",
+ round, filter.flushed);
+ fflush(stdout);
+ }
+ }
+}
+
static int iproute_list_flush_or_save(int argc, char **argv, int action)
{
int do_ipv6 = preferred_family;
@@ -1479,7 +1541,6 @@ static int iproute_list_flush_or_save(int argc, char **argv, int action)
char *od = NULL;
unsigned int mark = 0;
rtnl_filter_t filter_fn;
- int ret;
if (action == IPROUTE_SAVE) {
if (save_route_prep())
@@ -1679,62 +1740,8 @@ static int iproute_list_flush_or_save(int argc, char **argv, int action)
}
filter.mark = mark;
- if (action == IPROUTE_FLUSH) {
- int round = 0;
- char flushb[4096-512];
- time_t start = time(0);
-
- if (filter.cloned) {
- if (do_ipv6 != AF_INET6) {
- iproute_flush_cache();
- if (show_stats)
- printf("*** IPv4 routing cache is flushed.\n");
- }
- if (do_ipv6 == AF_INET)
- return 0;
- }
-
- filter.flushb = flushb;
- filter.flushp = 0;
- filter.flushe = sizeof(flushb);
-
- for (;;) {
- if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
- perror("Cannot send dump request");
- return -2;
- }
- filter.flushed = 0;
- if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
- fprintf(stderr, "Flush terminated\n");
- return -2;
- }
- if (filter.flushed == 0) {
- if (show_stats) {
- if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
- printf("Nothing to flush.\n");
- else
- printf("*** Flush is complete after %d round%s ***\n", round, round > 1?"s":"");
- }
- fflush(stdout);
- return 0;
- }
- round++;
- ret = flush_update();
- if (ret < 0)
- return ret;
-
- if (time(0) - start > 30) {
- printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
- (long)(time(0) - start), filter.flushed);
- return -1;
- }
-
- if (show_stats) {
- printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
- fflush(stdout);
- }
- }
- }
+ if (action == IPROUTE_FLUSH)
+ return iproute_flush(do_ipv6, filter_fn);
if (!filter.cloned) {
if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
--
2.15.1
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