[dpdk-dev] [PATCH] net/bonding: fix Segfault when eal thread executing nic‘s lsc event for mode 4

[Zhaohui (zhaohui, Polestar)]

Hi：
         When the number of slave slave devices exceeds 8, it will cause the array subscript to cross the boundary.
         According to the suggestions, Modified array subscript to RTE_MAX_ETHPORTS, and Changed uint8_t to uint16_t. Something like this:

From 51a081ea88cca1599d458d8d1c7d9605a6eb3352 Mon Sep 17 00:00:00 2001
From: zhaohui8 <zhaohui8 at huawei.com>
Date: Wed, 20 Mar 2019 20:17:27 +0800
Subject: [PATCH] net/bonding: fix Segfault when eal thread executing nic‘s lsc event for mode 4

Change-Id: I6d800a3adf5ca51f295b607de879bcb0ccc20004
---
drivers/net/bonding/rte_eth_bond_8023ad.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/bonding/rte_eth_bond_8023ad.c b/drivers/net/bonding/rte_eth_bond_8023ad.c
index dd847c6..4d99239 100644
--- a/drivers/net/bonding/rte_eth_bond_8023ad.c
+++ b/drivers/net/bonding/rte_eth_bond_8023ad.c
@@ -638,7 +638,7 @@
       SM_FLAG_CLR(port, NTT);
}
-static uint8_t
+static uint16_t
max_index(uint64_t *a, int n)
{
       if (n <= 0)
@@ -664,15 +664,15 @@
  * @param port_pos                       Port to assign.
  */
static void
-selection_logic(struct bond_dev_private *internals, uint8_t slave_id)
+selection_logic(struct bond_dev_private *internals, uint16_t slave_id)
{
       struct port *agg, *port;
       uint16_t slaves_count, new_agg_id, i, j = 0;
       uint16_t *slaves;
-        uint64_t agg_bandwidth[8] = {0};
-        uint64_t agg_count[8] = {0};
+       uint64_t agg_bandwidth[RTE_MAX_ETHPORTS] = {0};
+       uint64_t agg_count[RTE_MAX_ETHPORTS] = {0};
       uint16_t default_slave = 0;
-        uint8_t mode_count_id, mode_band_id;
+       uint16_t mode_count_id, mode_band_id;
       struct rte_eth_link link_info;
        slaves = internals->active_slaves;
@@ -806,7 +806,7 @@
       struct ether_addr slave_addr;
       struct rte_mbuf *lacp_pkt = NULL;
-        uint8_t i, slave_id;
+       uint16_t i, slave_id;

        /* Update link status on each port */
--
1.9.5.msysgit.0