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From 65bcce29d5d7ad3831513fe14c76791287847597 Mon Sep 17 00:00:00 2001
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From: Nilesh Javali <nilesh.javali@cavium.com>
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Date: Fri, 24 Aug 2018 06:38:45 -0400
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Subject: [PATCH] iscsiuio: limit retries of performing dhcpv6 before declaring
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dhcp failure
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After successful stateless router adv., the restart of handle_ndp thread
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infinitely checks dhcpv6 causing IPv6 DHCP sequence failure.
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Limit the retries of dhcpv6 validation.
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Signed-off-by: Nilesh Javali <nilesh.javali@cavium.com>
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---
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iscsiuio/src/uip/ipv6_ndpc.c | 11 ++++++++---
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1 file changed, 8 insertions(+), 3 deletions(-)
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diff --git a/iscsiuio/src/uip/ipv6_ndpc.c b/iscsiuio/src/uip/ipv6_ndpc.c
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index a396cb784bd3..bb07c1dd64ff 100644
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--- a/iscsiuio/src/uip/ipv6_ndpc.c
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+++ b/iscsiuio/src/uip/ipv6_ndpc.c
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@@ -134,6 +134,7 @@ wait_rtr:
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} while (!(ipv6c->flags & IPV6_FLAGS_ROUTER_ADV_RECEIVED));
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LOG_DEBUG("%s: ndpc_handle got rtr adv", s->nic->log_name);
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+ s->retry_count = 0;
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no_rtr_adv:
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s->state = NDPC_STATE_RTR_ADV;
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@@ -200,9 +201,13 @@ wait_dhcp:
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} else {
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/* Static IPv6 */
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if (ustack->ip_config == IPV6_CONFIG_DHCP) {
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- LOG_DEBUG("%s: ndpc_handle DHCP failed",
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- s->nic->log_name);
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- PT_RESTART(&s->pt);
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+ s->retry_count++;
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+ if (s->retry_count > DHCPV6_NUM_OF_RETRY) {
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+ LOG_DEBUG("%s: ndpc_handle DHCP failed",
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+ s->nic->log_name);
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+ } else {
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+ PT_RESTART(&s->pt);
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+ }
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}
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staticv6:
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ipv6_disable_dhcpv6(ipv6c);
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--
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2.17.2
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