From 4a52c4af48a2a35282ddc4dcf2df83486d636754 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 16 Aug 2012 18:32:18 -0700 Subject: [PATCH] Tools: hv: Gather ipv[4,6] gateway information Gather information on the default gateways - ipv4/ipv6. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_kvp_daemon.c | 68 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index a63e83a0159f..65d54c89394e 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -491,6 +491,68 @@ done: return; } +static void kvp_process_ipconfig_file(char *cmd, + char *config_buf, int len, + int element_size, int offset) +{ + char buf[256]; + char *p; + char *x; + FILE *file; + + /* + * First execute the command. + */ + file = popen(cmd, "r"); + if (file == NULL) + return; + + if (offset == 0) + memset(config_buf, 0, len); + while ((p = fgets(buf, sizeof(buf), file)) != NULL) { + if ((len - strlen(config_buf)) < (element_size + 1)) + break; + + x = strchr(p, '\n'); + *x = '\0'; + strcat(config_buf, p); + strcat(config_buf, ";"); + } + pclose(file); +} + +static void kvp_get_ipconfig_info(char *if_name, + struct hv_kvp_ipaddr_value *buffer) +{ + char cmd[512]; + + /* + * Get the address of default gateway (ipv4). + */ + sprintf(cmd, "%s %s", "ip route show dev", if_name); + strcat(cmd, " | awk '/default/ {print $3 }'"); + + /* + * Execute the command to gather gateway info. + */ + kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, + (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); + + /* + * Get the address of default gateway (ipv6). + */ + sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); + strcat(cmd, " | awk '/default/ {print $3 }'"); + + /* + * Execute the command to gather gateway info (ipv6). + */ + kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, + (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); + +} + + static unsigned int hweight32(unsigned int *w) { unsigned int res = *w - ((*w >> 1) & 0x55555555); @@ -650,6 +712,12 @@ kvp_get_ip_address(int family, char *if_name, int op, strcat((char *)ip_buffer->sub_net, ";"); sn_offset += strlen(sn_str) + 1; } + + /* + * Collect other ip related configuration info. + */ + + kvp_get_ipconfig_info(if_name, ip_buffer); } gather_ipaddr: -- 2.39.5